Parkinson’s disease is characterized by synucleinopathy-associated neurodegeneration.Previous studies have shown that glucagon-like peptide-1(GLP-1)has beneficial effects in a mouse model of Parkinson’s disease indu...Parkinson’s disease is characterized by synucleinopathy-associated neurodegeneration.Previous studies have shown that glucagon-like peptide-1(GLP-1)has beneficial effects in a mouse model of Parkinson’s disease induced by 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine.However,the effect of GLP-1 on intrinsic synuclein malfunction remains unclear.In this study,we investigated the effect of Lactococcus lactis MG1363-pMG36e-GLP-1 on parkinsonism in SncaA53T transgenic mice and explored the underlying mechanisms.Our data showed that Lactococcus lactis MG1363-pMG36e-GLP-1 inhibited dopaminergic neuronal death,reduced pathological aggregation ofα-synuclein,and decreased movement disorders in SncaA53T transgenic mice.Furthermore,Lactococcus lactis MG1363-pMG36e-GLP-1 downregulated lipopolysaccharide-related inflammation,reduced cerebral activation of microglia and astrocytes,and promoted cell survival via the GLP-1 receptor/PI3K/Akt pathway in the substantia nigra.Additionally,Lactococcus lactis MG1363-pMG36e-GLP-1 decreased serum levels of pro-inflammatory molecules including lipopolysaccharide,lipopolysaccharide binding protein,interleukin-1β,and interleukin-6.Gut histopathology and western blotting further revealed that Lactococcus lactis MG1363-pMG36e-GLP-1 increased the expression of gut integrity-related proteins and reduced lipopolysaccharide-related inflammation by reversing gut dysbiosis in SncaA53T transgenic mice.Our findings showed that the beneficial effect of Lactococcus lactis MG1363-pMG36e-GLP-1 on parkinsonism traits in SncaA53T transgenic mice is mediated by microglial polarization and the reversal of dysbiosis.Collectively,our findings suggest that Lactococcus lactis MG1363-pMG36e-GLP-1 is a promising therapeutic agent for the treatment of Parkinson’s disease.展开更多
BACKGROUND: Sepsis, a common acute and critical disease, leads to 11 million deaths annually worldwide. Probiotics are living microorganisms that are beneficial to the host and may benefit sepsis outcomes, but their e...BACKGROUND: Sepsis, a common acute and critical disease, leads to 11 million deaths annually worldwide. Probiotics are living microorganisms that are beneficial to the host and may benefit sepsis outcomes, but their effects are stil inconclusive. This study aimed to evaluate the overal eff ect of probiotics on the prognosis of patients with sepsis.DATA RESOURCES: We searched several sources for published/presented studies, including Pub Med, EMBASE, Web of Science, the Cochrane Library and the US National Library of Medicine Clinical Trials Register(www.clinicaltrials.gov) updated through July 30, 2023, to identify all relevant randomized controlled trials(RCTs) or observational studies that assessed the effectiveness of probiotics or synbiotics in patients with sepsis and reported mortality. We focused primarily on mortality during the study period and analyzed secondary outcomes, including 28-day mortality, in-intensive care unit(ICU) mortality and other outcomes.RESULTS: Data from 405 patients in five RCTs and 108 patients in one cohort study were included in the analysis. The overall quality of the studies was satisfactory, but clinical heterogeneity existed. All adult studies reported a tendency for probiotics to reduce the mortality of patients with sepsis, and most studies reported a decreasing trend in the incidence of infectious complications, length of ICU stay and duration of antibiotic use. There was only one RCT involving children.CONCLUSION: Probiotics show promise for improving the prognosis of patients with sepsis, including reducing mortality and the incidence of infectious complications, particularly in adult patients. Despite the limited number of studies, especially in children, these findings will be encouraging for clinical practice in the treatment of sepsis and suggest that gut microbiota-targeted therapy may improve the prognosis of patients with sepsis.展开更多
Probiotic supplementation enhances the abundance of gutassociated Rhodobacteraceae species,critical symbionts contributing to the health and physiological fitness of Litopenaeus vannamei.Understanding the role of Rhod...Probiotic supplementation enhances the abundance of gutassociated Rhodobacteraceae species,critical symbionts contributing to the health and physiological fitness of Litopenaeus vannamei.Understanding the role of Rhodobacteraceae in shaping the shrimp gut microbiota is essential for optimizing probiotic application.This study investigated whether probiotics benefit shrimp health and fitness via the recruitment of Rhodobacteraceae commensals in the gut.Probiotic supplementation significantly enhanced feed conversion efficiency,digestive enzyme activity,and immune responses,thereby promoting shrimp growth.Additionally,probiotics induced pronounced shifts in gut microbial composition,enriched gut Rhodobacteraceae abundance,and reduced community variability,leading to a more stable gut microbiome.Network analysis revealed that the removal of Rhodobacteraceae nodes disrupted gut microbial connectivity more rapidly than the removal of nonRhodobacteraceae nodes,indicating a disproportionate role of Rhodobacteraceae in maintaining network stability.Probiotic supplementation facilitated the migration of Rhodobacteraceae taxa from the aquatic environment to the shrimp gut while reinforcing deterministic selection in gut microbiota assembly.Transcriptomic analysis revealed that up-regulation of amino acid metabolism and NF-κB signaling pathways was positively correlated with Rhodobacteraceae abundance.These findings demonstrate that probiotic supplementation enriches key Rhodobacteraceae taxa,stabilizes gut microbial networks,and enhances host digestive and immune functions,ultimately improving shrimp growth performance.This study provides novel perspectives on the ecological and molecular mechanisms underlying the beneficial effects of probiotics on shrimp fitness.展开更多
Fermented corn starch has emerged as a promising functional food due to its triad of gut biotics,prebiotic,probiotic,and postbiotic properties,which present significant potential for the management of type 2 diabetes ...Fermented corn starch has emerged as a promising functional food due to its triad of gut biotics,prebiotic,probiotic,and postbiotic properties,which present significant potential for the management of type 2 diabetes through gut microbiota modulation.During fermentation,microbial activity alters the starch matrix,enhancing the production of bioactive compounds such as resistant starch,isomalto-oligosaccharides,and resistant dextrin,which improve insulin sensitivity,reduce inflammation,and support glycemic control.Additionally,fermented corn starch harbors beneficial microbial strains including Lactiplantibacillus fermentum,Bifidobacterium breve,and Saccharomyces cerevisiae,which reinforce gut barrier integrity,stimulate incretin secretion,and suppress systemic inflammation.Postbiotic metabolites such as short-chain fatty acids,exopolysaccharides,and bacteriocins further contribute to glucose homeostasis through immune modulation and gut hormone regulation.Despite its promise,the clinical translation of fermented corn starch is limited by safety concerns(e.g.,contamination with pathogens or mycotoxins),lack of standardized fermentation protocols,and a scarcity of targeted studies.This review synthesizes current evidence on the antidiabetic potential of fermented corn starch,advocating for its integration into precision nutrition approaches and supporting further research to address safety and standardization challenges in functional food development.展开更多
Microcystin-LR(MC-LR)is a highly toxic category of biotoxins that can damage eye development and retinal structure in zebrafish,while probiotics can largely benefit the function of the retina.Although they both act on...Microcystin-LR(MC-LR)is a highly toxic category of biotoxins that can damage eye development and retinal structure in zebrafish,while probiotics can largely benefit the function of the retina.Although they both act on the visual system,whether probiotics can alleviate the visual damage caused by MC-LR in fish and the underlying mechanisms remains unclear.In this study,we exposed adult zebrafish for 28 days at MC-LR concentrations of 0,2.20,and 22.00μg/L with or without the probiotic Lactobacillus rhamnosus in the diet.MC-LR exposure alone resulted in structural damage to the retina and abnormal phototropic behavior,whereas L.rhamnosus could alleviate these damages.Biochemical analyses showed thatMCLR-induced abnormalities in apoptosis of ocular cells,retinal inflammatory responses,neurotransmission,and phototransduction were restored in the L.rhamnosus treatment group,indicating L.rhamnosus alleviated MC-LR-induced defects in the visual system and dysfunctions.This study underlines the defensive role of probiotics in protecting the host from environmental pollutants,which may provide guidance for the application of probiotics in aquaculture.展开更多
Intestinal drug-resistant pathogens,e.g.,Salmonella enterica subsp.enterica serovar Typhimurium(S.Tm)and enteropathogenic Escherichia coli(E.coli),frequently cause life-threatening infectious enteritis.Probiotic-based...Intestinal drug-resistant pathogens,e.g.,Salmonella enterica subsp.enterica serovar Typhimurium(S.Tm)and enteropathogenic Escherichia coli(E.coli),frequently cause life-threatening infectious enteritis.Probiotic-based therapy is a promising way to eliminate drug-resistant pathogens for treatment of infectious enteritis,but its colonizing and therapeutic efficacy after oral administration are limited.Here,we developed a facile therapeutic agent to treat infectious enteritis by co-assembly of the peptide nanodrug melittin-loaded MSN grafted by polysaccharide-binding protein(MMPB)with the famous probiotic bacteria Lactobacillus plantarum(Lac)and Bifidobacterium animalis subsp.lactis(Bif).The nanodrug was composed of the antimicrobial peptide melittin and mesoporous silica nanoparticles exposing the artificial polysaccharide-binding protein.Owing to presence of the artificial protein on the MMPB surface,the nanodrug strongly bound and cross-linked the probiotic cells,forming the Lac+Bif+MMPB co-assembly.During co-incubation with the kanamycin-resistant E.coli strain(Ecka),the co-assembly strongly reduced the viability of Ecka,leading to the increase in the ratio of probiotic to Ecka from 1.6 to 9.2.After oral administration of the co-assembly to themice pre-colonized by Ecka,Lac+Bif+MMPB almost eliminated the kanamycin-resistant gene in the intestine,and led to 2-3-fold higher levels of the probiotic cells than the nanodrug MMPB or the combined probiotics Lac+Bif.More importantly,in the mice suffering from enteritis caused by drug-resistant S.Tm,the co-assembly remarkably recovered the mouse body weight,reduced intestine colonization of S.Tm cells,and decreased the levels of pro-inflammatory cytokines in both serum and colons.This study realized the synthetic biology technique-mediated abiotic/biotic co-assembly for efficient treating infectious enteritis induced by drug-resistant pathogens.展开更多
Restoring the balance of gut microbiota has emerged as a critical strategy in treating intestinal disorders,with probiotics playing a pivotal role in maintaining bacterial equilibrium.Surgical preparations,trauma,and ...Restoring the balance of gut microbiota has emerged as a critical strategy in treating intestinal disorders,with probiotics playing a pivotal role in maintaining bacterial equilibrium.Surgical preparations,trauma,and digestive tract reconstruction associated with intestinal surgeries often disrupt the intestinal flora,prompting interest in the potential role of probiotics in postoperative recovery.Lan et al conducted a prospective randomized study on 60 patients with acute appendicitis,revealing that postoperative administration of Bacillus licheniformis capsules facilitated early resolution of inflammation and restoration of gastrointestinal motility,offering a novel therapeutic avenue for accelerated postoperative recovery.This editorial delves into the effects of perioperative probiotic supplementation on physical and intestinal recovery following surgery.Within the framework of enhanced recovery after surgery,the exploration of new probiotic supplementation strategies to mitigate surgical complications and reshape gut microbiota is particularly intriguing.展开更多
A systematic review and meta-analysis study was conducted to assess the effectiveness of probiotic/prebiotic/synbiotic supplementation on the effects of cardiovascular risk factors in patients with type 2 diabetes mel...A systematic review and meta-analysis study was conducted to assess the effectiveness of probiotic/prebiotic/synbiotic supplementation on the effects of cardiovascular risk factors in patients with type 2 diabetes mellitus(T2DM)based on data from randomized controlled trials(RCTs).We searched electronic databases including PubMed,Cochrane Library,Embase,and Web of Science to identify clinical trials published up to 31 March 2023.Data was pooled using a random-effects model if significant heterogeneity(I2>50%),otherwise use a fixed-effects model.Fifty-six trials that included 3317 patients were enrolled for analysis.Meta-analysis reported that probiotic/prebiotic/synbiotic supplementation significantly reduced systolic blood pressure(SBP)(weighted mean difference(WMD):-3.57 mmHg,95% confidence interval(CI):-5.36,-1.78;P=0.000),diastolic blood pressure(DBP)(WMD:-2.05 mmHg,95%CI:-3.07,-1.04;P=0.000),triglycerides(TG)(WMD:-16.10 mg/dL,95%CI:-20.16,-12.05;P=0.000),total cholesterol(TC)(WMD:-14.00 mg/dL,95%CI:-20.46,-7.55;P=0.000),low-density lipoprotein cholesterol(LDL-C)(WMD:-7.03 mg/dL,95%CI:-9.25,-4.81;P=0.000),fasting plasma glucose(FPG)(WMD:-16.57 mg/dL,95%CI:-20.39,-12.74;P=0.000),hemoglobin A1c(HbA1c)(WMD:-0.44%,95%CI:-0.68,-0.20;P=0.000),insulin(standardized mean difference(SMD):-0.37,95%CI:-0.53,-0.21;P=0.000),homeostatic model assessment of insulin resistance(HOMA-IR)(WMD:-1.05,95%CI:-1.56,-0.54;P=0.000),C-reactive protein(CRP)(SMD:-0.35,95%CI:-0.57,-0.13;P=0.002),tumor necrosis factor-α(TNF-α)(SMD:-1.07,95%CI:-1.57,-0.56;P=0.000),interleukin-6(IL-6)(SMD:-0.37,95%CI:-0.61,-0.13;P=0.003)levels,they also increased the high-density lipoprotein cholesterol(HDL-C)(WMD:3.70 mg/dL,95%CI:1.80,5.60;P=0.000)levels in T2DM patients,as compared to the placebo groups.This meta-analysis supports the use of probiotic/prebiotic/synbiotic supplementation as an adjunctive therapy to improve blood pressure,glycemic control parameters,lipid profile and inflammatory markers in patients with T2DM,which are well-known cardiovascular risk factors.展开更多
[Objective]The study aimed to develop microecological preparations for poultry as potential substitutes for certain antibiotics.[Method]Acid-producing bacteria were isolated and purified from chicken cecal chyme,follo...[Objective]The study aimed to develop microecological preparations for poultry as potential substitutes for certain antibiotics.[Method]Acid-producing bacteria were isolated and purified from chicken cecal chyme,followed by evaluation of their antibacterial properties and molecular biological identification.Additionally,their in vitro tolerance and safety were experimentally assessed.[Result]A lactic acid bacterium with notable antibacterial properties was isolated and identified as Lactobacillus plantarum.This strain exhibited inhibitory effects against the pathogenic indicator bacteria Escherichia coli and Staphylococcus aureus,with maximum inhibition zone diameters measuring 8.95 and 6.43 mm,respectively.In vitro tolerance tests demonstrated that this strain was capable of growth within a pH range of 4-8,tolerated bile salt concentrations between 0.10%and 0.30%,and adapted to simulated gastric and intestinal fluid environments.Safety test revealed that the strain exhibited no hemolytic activity and was deemed safe in mouse safety assessments.[Conclusion]A chicken-derived L.plantarum strain has been identified,exhibiting notable antibacterial activity,stress tolerance,probiotic efficacy,and safety.This strain holds significant potential and market prospects for the development of microecological preparations.展开更多
Background Rumen microorganisms are key regulators of ruminant growth and production performance.Identifying probiotic candidates through microbial culturomics presents a promising strategy for improving ruminant prod...Background Rumen microorganisms are key regulators of ruminant growth and production performance.Identifying probiotic candidates through microbial culturomics presents a promising strategy for improving ruminant production performance.Our previous study identified significant differences in rumen microbial communities of Holstein calves with varying average daily gain(ADG).This study aims to identify a target strain based on the findings from multi-omics analysis and literature review,isolating and evaluating the target microbial strains from both the rumen and hindgut contents for their probiotic potential.Results Parabacteroides distasonis,a strain closely associated with ADG,was successfully isolated from calf rumen content cultured with Fastidious Anaerobe Agar(FAA)medium and named Parabacteroides distasonis F4.Wholegenome sequencing and pan-genome analysis showed that P.distasonis F4 possesses a core functional potential for carbohydrate and amino acid metabolism,with the ability to produce propionate,acetate,and lactate.The results of targeted and untargeted metabolomics further validated the organic acid production and metabolic pathways of P.distasonis F4.An in vitro simulated rumen fermentation test showed that supplementation with P.distasonis F4 significantly altered rumen microbial community structure and increased the molar proportions of propionate and butyrate in the rumen.Furthermore,an in vivo study demonstrated that dietary supplementation with P.distasonis F4 significantly increased the ADG of pre-weaning calves.Conclusions This study represents the first isolation of P.distasonis F4 from rumen,highlighting its potential as a probiotic strain for improving rumen development and growth performance in ruminants.展开更多
The prevalence of bacterial digestive diseases in plateau animals has caused considerable losses to the Tibetan live‑stock industry.Therefore,this study aimed to isolate safe lactic acid bacteria(LAB)with beneficial p...The prevalence of bacterial digestive diseases in plateau animals has caused considerable losses to the Tibetan live‑stock industry.Therefore,this study aimed to isolate safe lactic acid bacteria(LAB)with beneficial probiotic proper‑ties to protect yaks from intestinal diseases.After 16S rDNA matching,four strains of Lactobacillus fermentum(A4),Pediococcus pentosaceus(A3.4 and A1.2),and Pediococcus acidilactici(B1.9)were isolated from the intestinal tissues and content of healthy yaks.The results indicated that A4 was more tolerant to bile salt(0.3%),while A3.4 had better stability in an acidic(pH=3.0)environment.The results of the antibacterial activity test suggested that the isolates inhibited most pathogenic bacteria by up to 20%,except for A3.4,which inhibited Pasteurella and Staphylococcus aureus by more than 20%.Moreover,the results of the antioxidant test demonstrated that A4 and A3.4 had potent antioxidant activity.In addition,the drug sensitivity test revealed that the isolates were susceptible to commonly used antibiotics.In terms of safety,the isolates promoted growth,enhanced intestinal development,and protected the intestinal barrier without causing any adverse effects.In conclusion,LAB isolated from yak intestinal contents are potential probiotics with excellent antibacterial properties.展开更多
BACKGROUND Diabetes is an epidemic condition affecting people globally with a high rate of morbidity and mortality.While various pharmacological and non-pharmacological treatment options are used,diabetes is still a n...BACKGROUND Diabetes is an epidemic condition affecting people globally with a high rate of morbidity and mortality.While various pharmacological and non-pharmacological treatment options are used,diabetes is still a non-treatable condition.Constant attempts are made to identify newer therapies that could support better management of the diabetes condition and improve overall quality of life.Numerous studies have supported the potential role of probiotics therapy in the diabetes condition.AIM To evaluate the efficacy of triple probiotic combination on glycaemic,metabolic,oxidative stress,and inflammatory parameters in the diabetic population.METHODS Randomized controlled trials evaluating the efficacy of the triple probiotic combination in diabetic patients were identified.The quality of the studies was evaluated using the PEDro scale while biasness between and within the studies was assessed using the Risk of Bias tool.Meta-analysis was conducted using RevMan software,and sensitivity analysis was performed using OpenMeta Analyst software.The study protocol was registered in PROSPERO(CRD42-024530999).RESULTS Five good-quality clinical trials were included.Low-to-moderate risk of bias was observed.Data from 300 participants were included(150 participants in both groups).Probiotics supplementation significantly improved glycaemic and insulin parameters(glucose level:-23.86 mg/dL;insulin level:-5.02μIU/mL;HOMA-IR:-1.82 score;QUICKI:+0.02 score;HOMA-B:-16.30 score;P<0.05 for all parameters),reduced oxidative stress and improved antioxidant parameters[TAC:+92.55 mmol/L;glutathione(GSH):+40.55μmol/L;nitric oxide(NO):+6.45μmol/L;malondialdehyde(MDA):-0.48μmol/L;hs-CRP:-2.24 mg/L;P<0.05 for all parameters except GSH],and improved lipid parameters(total cholesterol(TC):-3.43 mg/dL;triglycerides(TG):-4.26 mg/dL;low-density lipoprotein:-4.62 mg/dL;very low-density lipoprotein:-0.83 mg/dL;high-density lipoprotein(HDL):+1.83 mg/dL;TC/HDL ratio:-0.25;P<0.05 for HDL and TC/HDL ratio parameters)compared to the control group.CONCLUSION The combination of L.acidophilus,L.casei,and B.bifidum is effective in diabetic patients with cardio/renal complications.Further well-designed studies are warranted to support the results of current research.展开更多
BACKGROUND Depression is a common mental-health disorder worldwide.Several studies have demonstrated the effects of gut microbiota-targeting interventions,such as probiotics,prebiotics,synbiotics,and postbiotics(PPSP)...BACKGROUND Depression is a common mental-health disorder worldwide.Several studies have demonstrated the effects of gut microbiota-targeting interventions,such as probiotics,prebiotics,synbiotics,and postbiotics(PPSP),on depression.AIM To assess the potential benefits of PPSP on patients diagnosed with depressive disorder.METHODS A literature search of the PubMed,Web of Science,and Elsevier Science Direct databases for relevant studies published from database inception to March 2024 was performed.Studies that used a randomized controlled trial design and eva-luated differences in depression between PPSP and placebo were included.Depressive symptoms were assessed using a validated scale.Analysis was performed using Review Manager version 5.4(The Cochrane Collaboration,2020).RESULTS Fourteen studies comprising 906 patients with depressive symptoms were included.PPSP improved depression compared with placebo[SMD:-0.39(95%CI:-0.60 to-0.17);P<0.001].PPSP resulted in significant reductions in Hamilton Depression Rating Scale[MD:-1.72(95%CI:-2.57 to-0.88);P<0.001]and Beck Depression Inventory[MD:-2.69(95%CI:-4.67 to-0.71);P<0.001]scores.Sub-analysis confirmed the antidepressant effects of probiotics on depressive symp-toms[SMD:-0.32(95%CI:-0.48 to-0.16);P<0.001],with prebiotics exerting no apparent effect[SMD:-0.08(95%CI:-0.39 to-0.23);P=0.62],and synbiotics exerting statistically significant benefits[SMD:-1.09(95%CI:-1.45 to-0.73);P<0.001].CONCLUSION PPSP effectively alleviates depressive symptoms,and subgroup analysis supports the benefits of probiotics and synbiotics.Nevertheless,evidence supporting the use of PPSP for the treatment of depression remains insufficient.展开更多
As a natural alternative to antibiotics,probiotics have considerable potential for use in livestock farming.However,the current use of probiotics in livestock poses potential public health risks due to inadequate regu...As a natural alternative to antibiotics,probiotics have considerable potential for use in livestock farming.However,the current use of probiotics in livestock poses potential public health risks due to inadequate regulations,including issues such as the inferior quality and dissemination of antibiotic resistance.In this study,95 non-duplicate commercial probiotic products for livestock were collected from different regions of China.Our findings revealed that the labeling compliance rate for Lactobacillus was the lowest,at just 11%,and approximately 33.3%of the products were contaminated with opportunistic pathogens containing various virulence and antibiotic-resistance genes(ARGs).Isolates of Bacillus and Enterococcus from the products exhibited diverse clonal types and geographical dispersion,whereas certain Enterococcus exhibited close phylogenetic relationships to clones associated with human infectious diseases.Compared with Bacillus and Lactobacillus,Enterococcus exhibited a higher prevalence of ARGs.Specifically,the oxazolidine-resistance gene optrA,which is located on novel transferable plasmids,was found in one isolate of Enterococcus faecium(E.faecium).Using chicken models,we observed that the optrA-positive E.faecium disrupts the normal intestinal microbiota in chickens and alters the abundance of intestinal resistome and mobile genetic elements(MGEs).Furthermore,metagenomic analysis revealed that the optrA gene can be transferred via transposon IS1216E to commensal intestinal bacteria,including Enterococcus cecorum(E.cecorum),Enterococcus gallinarum(E.gallinarum),and Lactobacillus crispatus(L.crispatus)species.In summary,our study confirms that the probiotic products used in Chinese livestock production present problems such as non-compliance with good manufacturing practice(GMP)production standards and insufficient elucidation of the molecular genetic background of probiotic strains.The widespread use of low-quality Enterococcus strains containing various ARGs as probiotics could disrupt intestinal homeostasis and serve as a reservoir and source of ARGs.We emphasize the importance of carefully evaluating the use of Enterococcus strains as probiotics to avoid potential negative effects on livestock and human health.展开更多
The community of microorganisms that colonize certain areas of the human body is called microbiota.Microorganisms such as bacteria,fungi and viruses make up the microbiota.The sum of the genomes of these microorganism...The community of microorganisms that colonize certain areas of the human body is called microbiota.Microorganisms such as bacteria,fungi and viruses make up the microbiota.The sum of the genomes of these microorganisms and microorganisms refers to the microbiome.It has been shown that microbiota has important effects such as protecting the organ from pathogens,contributing to metabolic functions(such as vitamin synthesis,carbohydrate digestion)and providing immunoregulation.Dysbiosis refers to compositional and functional changes in the microbiota.At the beginning of the 21st century,numerous studies have investigated the human microbiota and its imbalance in relation to various diseases and found that dysbiosis is associated with many diseases.The aim of this minireview article is to provide brief information about dysbiosis and its care and to raise awareness.展开更多
This study aimed to assess the therapeutic potential of nisin,5-fluorouracil(5FU)and selenium encapsulated in folate-conjugated thiolated chitosan nanoparticles(N/5FU/Se@FTCsNPs),combined with a probiotic cocktail of ...This study aimed to assess the therapeutic potential of nisin,5-fluorouracil(5FU)and selenium encapsulated in folate-conjugated thiolated chitosan nanoparticles(N/5FU/Se@FTCsNPs),combined with a probiotic cocktail of Lactobacillus acidophilus and Bifidobacterium bifidum,against colorectal cancer(CRC).The nanoparticles(277 nm,+9.2 mV)exhibited high drug loading efficiencies(5FU:89.11%,nisin:70.68%)and pH-responsive release,with minimal drug release under gastric conditions and∼60.7%release at colonic pH,facilitating targeted delivery.The formulation remained stable for over 40 d at−20°C and 4°C,demonstrating excellent biocompatibility(<2%hemolysis)and exhibiting strong mucoadhesive and mucus-penetrating abilities.In vitro,N/5FU/Se@FTCsNPs selectively targeted CT26 colon cancer cells(IC5n:1.57μg/ml)with minimal effects on healthy cells,enhanced cellular uptake,and induced ROS-mediated apoptosis.In vivo,oral administration-especially with probiotics-significantly reduced tumor volume,improved survival rates and alleviated chemotherapy-related side effects such as diarrhea and weight loss.Biodistribution studies confirmed increased tumor targeting and decreased off-target exposure.Mechanistically,the treatment downregulated oncogenes and inflammatory markers(2-to 12.5-fold),includingβ-catenin,mTOR,COX-2 and VEGF-α,while upregulating tumor suppressors and protective genes(4 to 14.8 fold),such as PTEN,CASP9 and Mucin 2(P<0.0001).This indicates inhibition of proliferation,metastasis,inflammation,and angiogenesis,along with improved gut barrier function.Cytokine profiling and histological analysis further confirmed reduced systemic inflammation and maintained hematological safety.These findings highlight N/5FU/Se@FTCsNPs combined with probiotics as a promising,safe and effective oral therapy for CRC,leveraging microbiota modulation and targeted delivery.展开更多
With the ongoing COVID-19,a significant increase in global depression rates has placed a considerable strain on healthcare systems.Conventional pharmaceutical methods have shown limitations in treating this rise in de...With the ongoing COVID-19,a significant increase in global depression rates has placed a considerable strain on healthcare systems.Conventional pharmaceutical methods have shown limitations in treating this rise in depression.Therefore,identifying new potential treatments for depression is crucial.Maintaining a balanced gut microbiota is vital for human health and immune system function due to its complex bidirectional relationship with the brain.Numerous studies have established a robust correlation between anxiety and depression disorders,as well as the composition of microbial communities in the gastrointestinal tract,providing a fresh perspective.Adjusting the balance of gut microbiota may help alleviate depression symptoms.Probiotics,live microorganisms in the human gut,can improve the microbial community,help maintain homeostasis and stress resilience to remission in patients with depression.It is essential to explore how probiotics affect gut microbiota since their impact can differ between animal experiments and clinical trials.The variation in results may be attributed to factors like the probiotic type,administered dosage,and treatment duration.The purpose of this review is to summarize the potential mechanisms by which probiotics affect gut microbiota,drawing from recent animal and clinical studies and observations on gut microbial ecology shifts.Additionally,this review will spotlight effective probiotic species for depression relief and discuss treatments centered on restoring gut microbial balance.Furthermore,it will also discuss the potential of probiotics on host microbiota in other organs to improve depressive symptoms and demonstrate the transient nature of the need for a more nuanced understanding of the safety and potential adverse effects of probiotics.展开更多
Functional constipation(FC)in elderly individuals is a significant health issue that adversely affects their quality of life,with recent studies indicating a close relationship between this condition and gut microbiot...Functional constipation(FC)in elderly individuals is a significant health issue that adversely affects their quality of life,with recent studies indicating a close relationship between this condition and gut microbiota dysbiosis.This review aims to explore the role of the gut microbiota in FC in elderly individuals,analyze the mechanisms of the gut-brain axis,and evaluate the potential use of microecological agents,including probiotics and prebiotics,in modulating the gut microbiota and alleviating constipation symptoms.By integrating the latest research findings,this study seeks to provide new perspectives and intervention strategies for the management of FC in elderly individuals.展开更多
While exerting their metabolic activities in the gastrointestinal milieu,probiotics impact the host well-being by boosting immunity,treating metabolic disorders,and modulating microbiota and metabolome.Due to the high...While exerting their metabolic activities in the gastrointestinal milieu,probiotics impact the host well-being by boosting immunity,treating metabolic disorders,and modulating microbiota and metabolome.Due to the high incidence of gluten-based disorders,the present work aims to deeply explore the metabolism of two selected microbial consortia(MCs)during gluten digestion under simulated gastrointestinal conditions.Featured by high protease and peptidase activity,both MCs accounted for different lactic acid bacteria and Bacillus strains that were combined with two commercial protease enzymes.Gluten substrates were used as purified extracts,white and whole wheat breads.Control samples,instead,relied onto the microbial enzyme lack.Twenty-four hours of simulated digestion were sufficient to completely hydrolyze gluten in one of the two MC-containing experimental sets,and the relative 48 h-digested extract did not alter the cytokine expression in duodenal biopsies from celiac disease(CeD)patients.When digested samples were assayed for antioxidant and phytase activities,microbial enzymes demonstrated to significantly improve both 2,2'-azinobis(3-ethylbenzothiazoline-6-sulfonic acid)(ABTS)and 1,1-diphenyl-2-picrylhydrazyl(DPPH)scavenging activity and to decrease the phytic acid concentration.The inspection of the free amino acid profiles allowed for distinguishing the two MCs,whereas the detection of a heterogeneous panel of volatile organic compounds supported the presence/activity of microbial enzymes without statistically significant differences between MCs.As functional contribution,digested extracts with MCs also proved to reduce the inflammatory cytokine concentrations in cell lines exposed to lipopolysaccharide trigger.Therefore,in line with studies exploring novel adjuvant therapies,the present innovative probiotic consortium featured by high gluten-hydrolyzing metabolism also showed the capability to improve various parameters usually found to be altered in patients affected by gluten-based disorders or CeD.展开更多
In this study,we aimed to isolate potential Bacillus strains from the digestive tract of Nile tilapia(Oreochromis niloticus).Through morphological,biochemical,16S rDNA sequencing,and evolutionary relationship assessme...In this study,we aimed to isolate potential Bacillus strains from the digestive tract of Nile tilapia(Oreochromis niloticus).Through morphological,biochemical,16S rDNA sequencing,and evolutionary relationship assessments,we identified the isolated species as Bacillus amyloliquefaciens AV5(OR647358),Bacillus subtilis AV7(LC781790),and Bacillus velezensis AV50(OR647359),designated as AV5,AV7,and AV50 strains,respectively.We evaluated their probiotic potential,including tolerance to high bile salt concentrations,low pH levels,and high temperatures,as well as their adhesion abilities(auto-aggregation and cell-surface hydrophobicity),antimicrobial activity,biosafety,compatibility,hemolytic activity,and antibiotic susceptibility.AV5,AV7,and AV50 strains exhibitedγ-hemolytic activity and resistance to low pH(1)and high bile salt concentrations(0.5%).They demonstrated higher viability after exposure to elevated temperatures(80℃,90℃,and 100℃)and increased cell surface hydrophobicity and autoaggregation.These strains showed positive compatibility,indicating their potential for multispecies use.Strains were susceptible to 17 out of 20 tested antibiotics,and displayed significant antimicrobial activity against Vibrio alginolyticus,Vibrio harveyi,Streptococcus iniae,and Streptococcus agalactiae.Therefore,AV5,AV7,and AV50 are promising probiotic candidates for enhancing the growth and health of aquatic animals,particularly in Nile tilapia(O.niloticus).展开更多
基金supported by grants from the Jiangxi Provincial Natural Science Foundation,No.20242BAB26134(to XF)the National Natural Science Foundation of China,Nos.82060638(to TC),82060222(to XF),82460237(to XF)+1 种基金the Major Disciplines of Academic and Technical Leaders Project of Jiangxi Province,Nos.20194BCJ22032(to TC),20213BCJL22049(to XF)Science and Technology Plan of Jiangxi Health Planning Committee,No.202210390(to XF).
文摘Parkinson’s disease is characterized by synucleinopathy-associated neurodegeneration.Previous studies have shown that glucagon-like peptide-1(GLP-1)has beneficial effects in a mouse model of Parkinson’s disease induced by 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine.However,the effect of GLP-1 on intrinsic synuclein malfunction remains unclear.In this study,we investigated the effect of Lactococcus lactis MG1363-pMG36e-GLP-1 on parkinsonism in SncaA53T transgenic mice and explored the underlying mechanisms.Our data showed that Lactococcus lactis MG1363-pMG36e-GLP-1 inhibited dopaminergic neuronal death,reduced pathological aggregation ofα-synuclein,and decreased movement disorders in SncaA53T transgenic mice.Furthermore,Lactococcus lactis MG1363-pMG36e-GLP-1 downregulated lipopolysaccharide-related inflammation,reduced cerebral activation of microglia and astrocytes,and promoted cell survival via the GLP-1 receptor/PI3K/Akt pathway in the substantia nigra.Additionally,Lactococcus lactis MG1363-pMG36e-GLP-1 decreased serum levels of pro-inflammatory molecules including lipopolysaccharide,lipopolysaccharide binding protein,interleukin-1β,and interleukin-6.Gut histopathology and western blotting further revealed that Lactococcus lactis MG1363-pMG36e-GLP-1 increased the expression of gut integrity-related proteins and reduced lipopolysaccharide-related inflammation by reversing gut dysbiosis in SncaA53T transgenic mice.Our findings showed that the beneficial effect of Lactococcus lactis MG1363-pMG36e-GLP-1 on parkinsonism traits in SncaA53T transgenic mice is mediated by microglial polarization and the reversal of dysbiosis.Collectively,our findings suggest that Lactococcus lactis MG1363-pMG36e-GLP-1 is a promising therapeutic agent for the treatment of Parkinson’s disease.
基金supported by the National High Level Hospital Clinical Research Funding (2022-PUMCH-B-109)Chinese Academy of Medical Science Innovation Fund for Medical Sciences (CIFMS)(2021-I2M-1-020)。
文摘BACKGROUND: Sepsis, a common acute and critical disease, leads to 11 million deaths annually worldwide. Probiotics are living microorganisms that are beneficial to the host and may benefit sepsis outcomes, but their effects are stil inconclusive. This study aimed to evaluate the overal eff ect of probiotics on the prognosis of patients with sepsis.DATA RESOURCES: We searched several sources for published/presented studies, including Pub Med, EMBASE, Web of Science, the Cochrane Library and the US National Library of Medicine Clinical Trials Register(www.clinicaltrials.gov) updated through July 30, 2023, to identify all relevant randomized controlled trials(RCTs) or observational studies that assessed the effectiveness of probiotics or synbiotics in patients with sepsis and reported mortality. We focused primarily on mortality during the study period and analyzed secondary outcomes, including 28-day mortality, in-intensive care unit(ICU) mortality and other outcomes.RESULTS: Data from 405 patients in five RCTs and 108 patients in one cohort study were included in the analysis. The overall quality of the studies was satisfactory, but clinical heterogeneity existed. All adult studies reported a tendency for probiotics to reduce the mortality of patients with sepsis, and most studies reported a decreasing trend in the incidence of infectious complications, length of ICU stay and duration of antibiotic use. There was only one RCT involving children.CONCLUSION: Probiotics show promise for improving the prognosis of patients with sepsis, including reducing mortality and the incidence of infectious complications, particularly in adult patients. Despite the limited number of studies, especially in children, these findings will be encouraging for clinical practice in the treatment of sepsis and suggest that gut microbiota-targeted therapy may improve the prognosis of patients with sepsis.
基金supported by the National Natural Science Foundation of China(32371596)Key Natural Science Foundation of Zhejiang Province(Z25C030002)+2 种基金Science and Technology Innovation Yongjiang 2035 Key Research and Development Project of Ningbo(2024Z279)One Health Interdisciplinary Research Project(HZ202404)K.C.Wong Magna Fund in Ningbo University。
文摘Probiotic supplementation enhances the abundance of gutassociated Rhodobacteraceae species,critical symbionts contributing to the health and physiological fitness of Litopenaeus vannamei.Understanding the role of Rhodobacteraceae in shaping the shrimp gut microbiota is essential for optimizing probiotic application.This study investigated whether probiotics benefit shrimp health and fitness via the recruitment of Rhodobacteraceae commensals in the gut.Probiotic supplementation significantly enhanced feed conversion efficiency,digestive enzyme activity,and immune responses,thereby promoting shrimp growth.Additionally,probiotics induced pronounced shifts in gut microbial composition,enriched gut Rhodobacteraceae abundance,and reduced community variability,leading to a more stable gut microbiome.Network analysis revealed that the removal of Rhodobacteraceae nodes disrupted gut microbial connectivity more rapidly than the removal of nonRhodobacteraceae nodes,indicating a disproportionate role of Rhodobacteraceae in maintaining network stability.Probiotic supplementation facilitated the migration of Rhodobacteraceae taxa from the aquatic environment to the shrimp gut while reinforcing deterministic selection in gut microbiota assembly.Transcriptomic analysis revealed that up-regulation of amino acid metabolism and NF-κB signaling pathways was positively correlated with Rhodobacteraceae abundance.These findings demonstrate that probiotic supplementation enriches key Rhodobacteraceae taxa,stabilizes gut microbial networks,and enhances host digestive and immune functions,ultimately improving shrimp growth performance.This study provides novel perspectives on the ecological and molecular mechanisms underlying the beneficial effects of probiotics on shrimp fitness.
基金Supported by the Research Office,University of KwaZulu-Natal,Durbanan Incentive Grant from the National Research Foundation,Pretoria,South Africa,No.145943.
文摘Fermented corn starch has emerged as a promising functional food due to its triad of gut biotics,prebiotic,probiotic,and postbiotic properties,which present significant potential for the management of type 2 diabetes through gut microbiota modulation.During fermentation,microbial activity alters the starch matrix,enhancing the production of bioactive compounds such as resistant starch,isomalto-oligosaccharides,and resistant dextrin,which improve insulin sensitivity,reduce inflammation,and support glycemic control.Additionally,fermented corn starch harbors beneficial microbial strains including Lactiplantibacillus fermentum,Bifidobacterium breve,and Saccharomyces cerevisiae,which reinforce gut barrier integrity,stimulate incretin secretion,and suppress systemic inflammation.Postbiotic metabolites such as short-chain fatty acids,exopolysaccharides,and bacteriocins further contribute to glucose homeostasis through immune modulation and gut hormone regulation.Despite its promise,the clinical translation of fermented corn starch is limited by safety concerns(e.g.,contamination with pathogens or mycotoxins),lack of standardized fermentation protocols,and a scarcity of targeted studies.This review synthesizes current evidence on the antidiabetic potential of fermented corn starch,advocating for its integration into precision nutrition approaches and supporting further research to address safety and standardization challenges in functional food development.
基金supported by the National Key Research and Development Program of China(No.2023YFD2400900)the National Natural Science Foundation of China(Nos.32171619 and 32201388)+2 种基金the Youth project of the Natural Science Foundation of Hubei Province(No.2021CFB243)Hubei Province Excellent Young and Middle aged Science and Technology Innovation Team Project(No.T2022028)the Youth Talent Project of Science and Technology Research Program of Hubei Provincial Department of Education(No.Q20212503)。
文摘Microcystin-LR(MC-LR)is a highly toxic category of biotoxins that can damage eye development and retinal structure in zebrafish,while probiotics can largely benefit the function of the retina.Although they both act on the visual system,whether probiotics can alleviate the visual damage caused by MC-LR in fish and the underlying mechanisms remains unclear.In this study,we exposed adult zebrafish for 28 days at MC-LR concentrations of 0,2.20,and 22.00μg/L with or without the probiotic Lactobacillus rhamnosus in the diet.MC-LR exposure alone resulted in structural damage to the retina and abnormal phototropic behavior,whereas L.rhamnosus could alleviate these damages.Biochemical analyses showed thatMCLR-induced abnormalities in apoptosis of ocular cells,retinal inflammatory responses,neurotransmission,and phototransduction were restored in the L.rhamnosus treatment group,indicating L.rhamnosus alleviated MC-LR-induced defects in the visual system and dysfunctions.This study underlines the defensive role of probiotics in protecting the host from environmental pollutants,which may provide guidance for the application of probiotics in aquaculture.
基金supported by National Natural Science Foundation of China(32170102)Natural Science Foundation of Tianjin(25JCLMJC00400)the Fundamental Research Funds for the Central Universities(63253191).
文摘Intestinal drug-resistant pathogens,e.g.,Salmonella enterica subsp.enterica serovar Typhimurium(S.Tm)and enteropathogenic Escherichia coli(E.coli),frequently cause life-threatening infectious enteritis.Probiotic-based therapy is a promising way to eliminate drug-resistant pathogens for treatment of infectious enteritis,but its colonizing and therapeutic efficacy after oral administration are limited.Here,we developed a facile therapeutic agent to treat infectious enteritis by co-assembly of the peptide nanodrug melittin-loaded MSN grafted by polysaccharide-binding protein(MMPB)with the famous probiotic bacteria Lactobacillus plantarum(Lac)and Bifidobacterium animalis subsp.lactis(Bif).The nanodrug was composed of the antimicrobial peptide melittin and mesoporous silica nanoparticles exposing the artificial polysaccharide-binding protein.Owing to presence of the artificial protein on the MMPB surface,the nanodrug strongly bound and cross-linked the probiotic cells,forming the Lac+Bif+MMPB co-assembly.During co-incubation with the kanamycin-resistant E.coli strain(Ecka),the co-assembly strongly reduced the viability of Ecka,leading to the increase in the ratio of probiotic to Ecka from 1.6 to 9.2.After oral administration of the co-assembly to themice pre-colonized by Ecka,Lac+Bif+MMPB almost eliminated the kanamycin-resistant gene in the intestine,and led to 2-3-fold higher levels of the probiotic cells than the nanodrug MMPB or the combined probiotics Lac+Bif.More importantly,in the mice suffering from enteritis caused by drug-resistant S.Tm,the co-assembly remarkably recovered the mouse body weight,reduced intestine colonization of S.Tm cells,and decreased the levels of pro-inflammatory cytokines in both serum and colons.This study realized the synthetic biology technique-mediated abiotic/biotic co-assembly for efficient treating infectious enteritis induced by drug-resistant pathogens.
文摘Restoring the balance of gut microbiota has emerged as a critical strategy in treating intestinal disorders,with probiotics playing a pivotal role in maintaining bacterial equilibrium.Surgical preparations,trauma,and digestive tract reconstruction associated with intestinal surgeries often disrupt the intestinal flora,prompting interest in the potential role of probiotics in postoperative recovery.Lan et al conducted a prospective randomized study on 60 patients with acute appendicitis,revealing that postoperative administration of Bacillus licheniformis capsules facilitated early resolution of inflammation and restoration of gastrointestinal motility,offering a novel therapeutic avenue for accelerated postoperative recovery.This editorial delves into the effects of perioperative probiotic supplementation on physical and intestinal recovery following surgery.Within the framework of enhanced recovery after surgery,the exploration of new probiotic supplementation strategies to mitigate surgical complications and reshape gut microbiota is particularly intriguing.
基金Jiangsu College of Nursing 2023 Special Fund for Research and Development of Medical-Educational Integration。
文摘A systematic review and meta-analysis study was conducted to assess the effectiveness of probiotic/prebiotic/synbiotic supplementation on the effects of cardiovascular risk factors in patients with type 2 diabetes mellitus(T2DM)based on data from randomized controlled trials(RCTs).We searched electronic databases including PubMed,Cochrane Library,Embase,and Web of Science to identify clinical trials published up to 31 March 2023.Data was pooled using a random-effects model if significant heterogeneity(I2>50%),otherwise use a fixed-effects model.Fifty-six trials that included 3317 patients were enrolled for analysis.Meta-analysis reported that probiotic/prebiotic/synbiotic supplementation significantly reduced systolic blood pressure(SBP)(weighted mean difference(WMD):-3.57 mmHg,95% confidence interval(CI):-5.36,-1.78;P=0.000),diastolic blood pressure(DBP)(WMD:-2.05 mmHg,95%CI:-3.07,-1.04;P=0.000),triglycerides(TG)(WMD:-16.10 mg/dL,95%CI:-20.16,-12.05;P=0.000),total cholesterol(TC)(WMD:-14.00 mg/dL,95%CI:-20.46,-7.55;P=0.000),low-density lipoprotein cholesterol(LDL-C)(WMD:-7.03 mg/dL,95%CI:-9.25,-4.81;P=0.000),fasting plasma glucose(FPG)(WMD:-16.57 mg/dL,95%CI:-20.39,-12.74;P=0.000),hemoglobin A1c(HbA1c)(WMD:-0.44%,95%CI:-0.68,-0.20;P=0.000),insulin(standardized mean difference(SMD):-0.37,95%CI:-0.53,-0.21;P=0.000),homeostatic model assessment of insulin resistance(HOMA-IR)(WMD:-1.05,95%CI:-1.56,-0.54;P=0.000),C-reactive protein(CRP)(SMD:-0.35,95%CI:-0.57,-0.13;P=0.002),tumor necrosis factor-α(TNF-α)(SMD:-1.07,95%CI:-1.57,-0.56;P=0.000),interleukin-6(IL-6)(SMD:-0.37,95%CI:-0.61,-0.13;P=0.003)levels,they also increased the high-density lipoprotein cholesterol(HDL-C)(WMD:3.70 mg/dL,95%CI:1.80,5.60;P=0.000)levels in T2DM patients,as compared to the placebo groups.This meta-analysis supports the use of probiotic/prebiotic/synbiotic supplementation as an adjunctive therapy to improve blood pressure,glycemic control parameters,lipid profile and inflammatory markers in patients with T2DM,which are well-known cardiovascular risk factors.
基金Supported by Regional Development Project of Fujian Provincial Department of Science and Technology(2022N3017).
文摘[Objective]The study aimed to develop microecological preparations for poultry as potential substitutes for certain antibiotics.[Method]Acid-producing bacteria were isolated and purified from chicken cecal chyme,followed by evaluation of their antibacterial properties and molecular biological identification.Additionally,their in vitro tolerance and safety were experimentally assessed.[Result]A lactic acid bacterium with notable antibacterial properties was isolated and identified as Lactobacillus plantarum.This strain exhibited inhibitory effects against the pathogenic indicator bacteria Escherichia coli and Staphylococcus aureus,with maximum inhibition zone diameters measuring 8.95 and 6.43 mm,respectively.In vitro tolerance tests demonstrated that this strain was capable of growth within a pH range of 4-8,tolerated bile salt concentrations between 0.10%and 0.30%,and adapted to simulated gastric and intestinal fluid environments.Safety test revealed that the strain exhibited no hemolytic activity and was deemed safe in mouse safety assessments.[Conclusion]A chicken-derived L.plantarum strain has been identified,exhibiting notable antibacterial activity,stress tolerance,probiotic efficacy,and safety.This strain holds significant potential and market prospects for the development of microecological preparations.
基金funded by National Key Research and Development Program(2022YFA1304200)Agricultural Science and Technology Innovation Program(CAAS-ASTIP-2023-IFR-04 and CAAS-ZDRW202305)the Beijing Innovation Consortium of Livestock Research System(BAIC05-2023).
文摘Background Rumen microorganisms are key regulators of ruminant growth and production performance.Identifying probiotic candidates through microbial culturomics presents a promising strategy for improving ruminant production performance.Our previous study identified significant differences in rumen microbial communities of Holstein calves with varying average daily gain(ADG).This study aims to identify a target strain based on the findings from multi-omics analysis and literature review,isolating and evaluating the target microbial strains from both the rumen and hindgut contents for their probiotic potential.Results Parabacteroides distasonis,a strain closely associated with ADG,was successfully isolated from calf rumen content cultured with Fastidious Anaerobe Agar(FAA)medium and named Parabacteroides distasonis F4.Wholegenome sequencing and pan-genome analysis showed that P.distasonis F4 possesses a core functional potential for carbohydrate and amino acid metabolism,with the ability to produce propionate,acetate,and lactate.The results of targeted and untargeted metabolomics further validated the organic acid production and metabolic pathways of P.distasonis F4.An in vitro simulated rumen fermentation test showed that supplementation with P.distasonis F4 significantly altered rumen microbial community structure and increased the molar proportions of propionate and butyrate in the rumen.Furthermore,an in vivo study demonstrated that dietary supplementation with P.distasonis F4 significantly increased the ADG of pre-weaning calves.Conclusions This study represents the first isolation of P.distasonis F4 from rumen,highlighting its potential as a probiotic strain for improving rumen development and growth performance in ruminants.
基金supported by the Key Project of Tibet Autonomous Region(XZ202001ZY0044NXZ202101ZD0002N-05).
文摘The prevalence of bacterial digestive diseases in plateau animals has caused considerable losses to the Tibetan live‑stock industry.Therefore,this study aimed to isolate safe lactic acid bacteria(LAB)with beneficial probiotic proper‑ties to protect yaks from intestinal diseases.After 16S rDNA matching,four strains of Lactobacillus fermentum(A4),Pediococcus pentosaceus(A3.4 and A1.2),and Pediococcus acidilactici(B1.9)were isolated from the intestinal tissues and content of healthy yaks.The results indicated that A4 was more tolerant to bile salt(0.3%),while A3.4 had better stability in an acidic(pH=3.0)environment.The results of the antibacterial activity test suggested that the isolates inhibited most pathogenic bacteria by up to 20%,except for A3.4,which inhibited Pasteurella and Staphylococcus aureus by more than 20%.Moreover,the results of the antioxidant test demonstrated that A4 and A3.4 had potent antioxidant activity.In addition,the drug sensitivity test revealed that the isolates were susceptible to commonly used antibiotics.In terms of safety,the isolates promoted growth,enhanced intestinal development,and protected the intestinal barrier without causing any adverse effects.In conclusion,LAB isolated from yak intestinal contents are potential probiotics with excellent antibacterial properties.
文摘BACKGROUND Diabetes is an epidemic condition affecting people globally with a high rate of morbidity and mortality.While various pharmacological and non-pharmacological treatment options are used,diabetes is still a non-treatable condition.Constant attempts are made to identify newer therapies that could support better management of the diabetes condition and improve overall quality of life.Numerous studies have supported the potential role of probiotics therapy in the diabetes condition.AIM To evaluate the efficacy of triple probiotic combination on glycaemic,metabolic,oxidative stress,and inflammatory parameters in the diabetic population.METHODS Randomized controlled trials evaluating the efficacy of the triple probiotic combination in diabetic patients were identified.The quality of the studies was evaluated using the PEDro scale while biasness between and within the studies was assessed using the Risk of Bias tool.Meta-analysis was conducted using RevMan software,and sensitivity analysis was performed using OpenMeta Analyst software.The study protocol was registered in PROSPERO(CRD42-024530999).RESULTS Five good-quality clinical trials were included.Low-to-moderate risk of bias was observed.Data from 300 participants were included(150 participants in both groups).Probiotics supplementation significantly improved glycaemic and insulin parameters(glucose level:-23.86 mg/dL;insulin level:-5.02μIU/mL;HOMA-IR:-1.82 score;QUICKI:+0.02 score;HOMA-B:-16.30 score;P<0.05 for all parameters),reduced oxidative stress and improved antioxidant parameters[TAC:+92.55 mmol/L;glutathione(GSH):+40.55μmol/L;nitric oxide(NO):+6.45μmol/L;malondialdehyde(MDA):-0.48μmol/L;hs-CRP:-2.24 mg/L;P<0.05 for all parameters except GSH],and improved lipid parameters(total cholesterol(TC):-3.43 mg/dL;triglycerides(TG):-4.26 mg/dL;low-density lipoprotein:-4.62 mg/dL;very low-density lipoprotein:-0.83 mg/dL;high-density lipoprotein(HDL):+1.83 mg/dL;TC/HDL ratio:-0.25;P<0.05 for HDL and TC/HDL ratio parameters)compared to the control group.CONCLUSION The combination of L.acidophilus,L.casei,and B.bifidum is effective in diabetic patients with cardio/renal complications.Further well-designed studies are warranted to support the results of current research.
文摘BACKGROUND Depression is a common mental-health disorder worldwide.Several studies have demonstrated the effects of gut microbiota-targeting interventions,such as probiotics,prebiotics,synbiotics,and postbiotics(PPSP),on depression.AIM To assess the potential benefits of PPSP on patients diagnosed with depressive disorder.METHODS A literature search of the PubMed,Web of Science,and Elsevier Science Direct databases for relevant studies published from database inception to March 2024 was performed.Studies that used a randomized controlled trial design and eva-luated differences in depression between PPSP and placebo were included.Depressive symptoms were assessed using a validated scale.Analysis was performed using Review Manager version 5.4(The Cochrane Collaboration,2020).RESULTS Fourteen studies comprising 906 patients with depressive symptoms were included.PPSP improved depression compared with placebo[SMD:-0.39(95%CI:-0.60 to-0.17);P<0.001].PPSP resulted in significant reductions in Hamilton Depression Rating Scale[MD:-1.72(95%CI:-2.57 to-0.88);P<0.001]and Beck Depression Inventory[MD:-2.69(95%CI:-4.67 to-0.71);P<0.001]scores.Sub-analysis confirmed the antidepressant effects of probiotics on depressive symp-toms[SMD:-0.32(95%CI:-0.48 to-0.16);P<0.001],with prebiotics exerting no apparent effect[SMD:-0.08(95%CI:-0.39 to-0.23);P=0.62],and synbiotics exerting statistically significant benefits[SMD:-1.09(95%CI:-1.45 to-0.73);P<0.001].CONCLUSION PPSP effectively alleviates depressive symptoms,and subgroup analysis supports the benefits of probiotics and synbiotics.Nevertheless,evidence supporting the use of PPSP for the treatment of depression remains insufficient.
基金the National Key Research and Development Program(2022YFD1800400)Jiangsu Provincial Natural Science Foundation Project(BK20220746).
文摘As a natural alternative to antibiotics,probiotics have considerable potential for use in livestock farming.However,the current use of probiotics in livestock poses potential public health risks due to inadequate regulations,including issues such as the inferior quality and dissemination of antibiotic resistance.In this study,95 non-duplicate commercial probiotic products for livestock were collected from different regions of China.Our findings revealed that the labeling compliance rate for Lactobacillus was the lowest,at just 11%,and approximately 33.3%of the products were contaminated with opportunistic pathogens containing various virulence and antibiotic-resistance genes(ARGs).Isolates of Bacillus and Enterococcus from the products exhibited diverse clonal types and geographical dispersion,whereas certain Enterococcus exhibited close phylogenetic relationships to clones associated with human infectious diseases.Compared with Bacillus and Lactobacillus,Enterococcus exhibited a higher prevalence of ARGs.Specifically,the oxazolidine-resistance gene optrA,which is located on novel transferable plasmids,was found in one isolate of Enterococcus faecium(E.faecium).Using chicken models,we observed that the optrA-positive E.faecium disrupts the normal intestinal microbiota in chickens and alters the abundance of intestinal resistome and mobile genetic elements(MGEs).Furthermore,metagenomic analysis revealed that the optrA gene can be transferred via transposon IS1216E to commensal intestinal bacteria,including Enterococcus cecorum(E.cecorum),Enterococcus gallinarum(E.gallinarum),and Lactobacillus crispatus(L.crispatus)species.In summary,our study confirms that the probiotic products used in Chinese livestock production present problems such as non-compliance with good manufacturing practice(GMP)production standards and insufficient elucidation of the molecular genetic background of probiotic strains.The widespread use of low-quality Enterococcus strains containing various ARGs as probiotics could disrupt intestinal homeostasis and serve as a reservoir and source of ARGs.We emphasize the importance of carefully evaluating the use of Enterococcus strains as probiotics to avoid potential negative effects on livestock and human health.
文摘The community of microorganisms that colonize certain areas of the human body is called microbiota.Microorganisms such as bacteria,fungi and viruses make up the microbiota.The sum of the genomes of these microorganisms and microorganisms refers to the microbiome.It has been shown that microbiota has important effects such as protecting the organ from pathogens,contributing to metabolic functions(such as vitamin synthesis,carbohydrate digestion)and providing immunoregulation.Dysbiosis refers to compositional and functional changes in the microbiota.At the beginning of the 21st century,numerous studies have investigated the human microbiota and its imbalance in relation to various diseases and found that dysbiosis is associated with many diseases.The aim of this minireview article is to provide brief information about dysbiosis and its care and to raise awareness.
基金supported by the Research Council of Tarbiat Modares University and the Iran National Science Foundation(INSF)(Grant Number:4043897).
文摘This study aimed to assess the therapeutic potential of nisin,5-fluorouracil(5FU)and selenium encapsulated in folate-conjugated thiolated chitosan nanoparticles(N/5FU/Se@FTCsNPs),combined with a probiotic cocktail of Lactobacillus acidophilus and Bifidobacterium bifidum,against colorectal cancer(CRC).The nanoparticles(277 nm,+9.2 mV)exhibited high drug loading efficiencies(5FU:89.11%,nisin:70.68%)and pH-responsive release,with minimal drug release under gastric conditions and∼60.7%release at colonic pH,facilitating targeted delivery.The formulation remained stable for over 40 d at−20°C and 4°C,demonstrating excellent biocompatibility(<2%hemolysis)and exhibiting strong mucoadhesive and mucus-penetrating abilities.In vitro,N/5FU/Se@FTCsNPs selectively targeted CT26 colon cancer cells(IC5n:1.57μg/ml)with minimal effects on healthy cells,enhanced cellular uptake,and induced ROS-mediated apoptosis.In vivo,oral administration-especially with probiotics-significantly reduced tumor volume,improved survival rates and alleviated chemotherapy-related side effects such as diarrhea and weight loss.Biodistribution studies confirmed increased tumor targeting and decreased off-target exposure.Mechanistically,the treatment downregulated oncogenes and inflammatory markers(2-to 12.5-fold),includingβ-catenin,mTOR,COX-2 and VEGF-α,while upregulating tumor suppressors and protective genes(4 to 14.8 fold),such as PTEN,CASP9 and Mucin 2(P<0.0001).This indicates inhibition of proliferation,metastasis,inflammation,and angiogenesis,along with improved gut barrier function.Cytokine profiling and histological analysis further confirmed reduced systemic inflammation and maintained hematological safety.These findings highlight N/5FU/Se@FTCsNPs combined with probiotics as a promising,safe and effective oral therapy for CRC,leveraging microbiota modulation and targeted delivery.
基金financially supported by National Natural Science Youth Fund of China(32302107)Guangdong Seed Industry Revitalization Project(2022-WPY-00-008).
文摘With the ongoing COVID-19,a significant increase in global depression rates has placed a considerable strain on healthcare systems.Conventional pharmaceutical methods have shown limitations in treating this rise in depression.Therefore,identifying new potential treatments for depression is crucial.Maintaining a balanced gut microbiota is vital for human health and immune system function due to its complex bidirectional relationship with the brain.Numerous studies have established a robust correlation between anxiety and depression disorders,as well as the composition of microbial communities in the gastrointestinal tract,providing a fresh perspective.Adjusting the balance of gut microbiota may help alleviate depression symptoms.Probiotics,live microorganisms in the human gut,can improve the microbial community,help maintain homeostasis and stress resilience to remission in patients with depression.It is essential to explore how probiotics affect gut microbiota since their impact can differ between animal experiments and clinical trials.The variation in results may be attributed to factors like the probiotic type,administered dosage,and treatment duration.The purpose of this review is to summarize the potential mechanisms by which probiotics affect gut microbiota,drawing from recent animal and clinical studies and observations on gut microbial ecology shifts.Additionally,this review will spotlight effective probiotic species for depression relief and discuss treatments centered on restoring gut microbial balance.Furthermore,it will also discuss the potential of probiotics on host microbiota in other organs to improve depressive symptoms and demonstrate the transient nature of the need for a more nuanced understanding of the safety and potential adverse effects of probiotics.
文摘Functional constipation(FC)in elderly individuals is a significant health issue that adversely affects their quality of life,with recent studies indicating a close relationship between this condition and gut microbiota dysbiosis.This review aims to explore the role of the gut microbiota in FC in elderly individuals,analyze the mechanisms of the gut-brain axis,and evaluate the potential use of microecological agents,including probiotics and prebiotics,in modulating the gut microbiota and alleviating constipation symptoms.By integrating the latest research findings,this study seeks to provide new perspectives and intervention strategies for the management of FC in elderly individuals.
文摘While exerting their metabolic activities in the gastrointestinal milieu,probiotics impact the host well-being by boosting immunity,treating metabolic disorders,and modulating microbiota and metabolome.Due to the high incidence of gluten-based disorders,the present work aims to deeply explore the metabolism of two selected microbial consortia(MCs)during gluten digestion under simulated gastrointestinal conditions.Featured by high protease and peptidase activity,both MCs accounted for different lactic acid bacteria and Bacillus strains that were combined with two commercial protease enzymes.Gluten substrates were used as purified extracts,white and whole wheat breads.Control samples,instead,relied onto the microbial enzyme lack.Twenty-four hours of simulated digestion were sufficient to completely hydrolyze gluten in one of the two MC-containing experimental sets,and the relative 48 h-digested extract did not alter the cytokine expression in duodenal biopsies from celiac disease(CeD)patients.When digested samples were assayed for antioxidant and phytase activities,microbial enzymes demonstrated to significantly improve both 2,2'-azinobis(3-ethylbenzothiazoline-6-sulfonic acid)(ABTS)and 1,1-diphenyl-2-picrylhydrazyl(DPPH)scavenging activity and to decrease the phytic acid concentration.The inspection of the free amino acid profiles allowed for distinguishing the two MCs,whereas the detection of a heterogeneous panel of volatile organic compounds supported the presence/activity of microbial enzymes without statistically significant differences between MCs.As functional contribution,digested extracts with MCs also proved to reduce the inflammatory cytokine concentrations in cell lines exposed to lipopolysaccharide trigger.Therefore,in line with studies exploring novel adjuvant therapies,the present innovative probiotic consortium featured by high gluten-hydrolyzing metabolism also showed the capability to improve various parameters usually found to be altered in patients affected by gluten-based disorders or CeD.
基金The National Natural Science Foundation of China under contract Nos U20A2065,32073006,and 32002426the Natural Science Foundation of Guangxi under contract No.2020GXNSFAA297243+3 种基金the Natural Science Foundation of Guangdong Province under contract No.2021B0202040002the Science and Technology Plan of Guangdong Province under contract No.2023B0202010016the Youth Science and Technology Innovation Talent of Guangdong TeZhi Plan Talent under contract No.2023TQ07A888the Science and Technology Planning Project of Zhanjiang under contract Nos 2022A01012 and 2022A01006.
文摘In this study,we aimed to isolate potential Bacillus strains from the digestive tract of Nile tilapia(Oreochromis niloticus).Through morphological,biochemical,16S rDNA sequencing,and evolutionary relationship assessments,we identified the isolated species as Bacillus amyloliquefaciens AV5(OR647358),Bacillus subtilis AV7(LC781790),and Bacillus velezensis AV50(OR647359),designated as AV5,AV7,and AV50 strains,respectively.We evaluated their probiotic potential,including tolerance to high bile salt concentrations,low pH levels,and high temperatures,as well as their adhesion abilities(auto-aggregation and cell-surface hydrophobicity),antimicrobial activity,biosafety,compatibility,hemolytic activity,and antibiotic susceptibility.AV5,AV7,and AV50 strains exhibitedγ-hemolytic activity and resistance to low pH(1)and high bile salt concentrations(0.5%).They demonstrated higher viability after exposure to elevated temperatures(80℃,90℃,and 100℃)and increased cell surface hydrophobicity and autoaggregation.These strains showed positive compatibility,indicating their potential for multispecies use.Strains were susceptible to 17 out of 20 tested antibiotics,and displayed significant antimicrobial activity against Vibrio alginolyticus,Vibrio harveyi,Streptococcus iniae,and Streptococcus agalactiae.Therefore,AV5,AV7,and AV50 are promising probiotic candidates for enhancing the growth and health of aquatic animals,particularly in Nile tilapia(O.niloticus).
