Probiotical cell fragments (PCFs) are structural components of the probiotic cell lysate(s) and exhibit similar beneficial effects on the host as live probiotic bacteria. With cell fragment technology (CFT?), the stru...Probiotical cell fragments (PCFs) are structural components of the probiotic cell lysate(s) and exhibit similar beneficial effects on the host as live probiotic bacteria. With cell fragment technology (CFT?), the structural fragments are isolated and purified from live probiotic cells. While observed to be strain-dependent as in the case of live probiotics, orally administered PCFs demonstrated a broad spectrum of immune modulation functions;anti-allergy;anti-inflammation;anti-bacterial and anti-viral properties;anti-mutagenic;and radioprotective and detoxification abilities in humans and animals. The PCFs mechanisms of action include events of motifs of cell wall peptidoglycans, DNA motifs, nucleotide containing components, lipoteichoic acids (LPAs), surface layer (S-layer) proteins, and cytoplasmic proteins. Different immunological in vivo-in vitro tests have shown that PCFs, essentially, have the ability to stimulate the macrophages, and induce cytokines such as interleukins, tumor necrosis factors (TNFs), interferons (IFNs), and natural killer (NK) cells. PCFs may be used as ingredients for foods and beverages or as nutritional supplements with long term stability and shelf-life up to 5 years. PCFs may also be used as health restorative ingredients in cosmetic products. The outcome of probiotics CFT? stands as an advantage to the food and pharmaceutical industries, regarding the formulation of novel products with unadulterated sensory characteristics of origin. Hence, PCFs are being characterized here as “novel nutraceutical ingredients” for health maintenance in both humans and animals.展开更多
The evidence in this paper indicates that the alarming increase of common allergies can be reduced by the intake of particular “probiotics” or “paraprobiotics” along with food. This appears to build a consensus in...The evidence in this paper indicates that the alarming increase of common allergies can be reduced by the intake of particular “probiotics” or “paraprobiotics” along with food. This appears to build a consensus in the pharmaceutical and food communities about the role of probiotics in the prevention and treatments of common allergies. Food allergy is one of the common allergies, defined as an adverse health effect arising from a specific immune response that occurs reproducibly on exposure to a given food. Improving the digestion of foods and maintaining a healthy gastrointestinal (GI) tract is certainly critical to controlling food allergens. Therefore, the association between a leaky gut or an impaired intestinal permeability and food-allergenic reactions is explained. Gluten has been found to be somehow a justification for protein allergy, and should, therefore, be avoided by people with celiac disease. In several, in vitro models, surface layer (S- layer) proteins of selective paraprobiotics have shown potential in alleviating food allergies and intestinal disorders. Notably, lactobacilli paraprobiotics have proven to be the immediate immunomodulators against common allergies and other diseases, including viral (flu, hepatitis C), bacterial (bronchitis), asthma, chronic fatigue, fibromyalgia, gastrointestinal distress, and autism disorders in humans.展开更多
Ceratitis capitata(Wiedemann)is a cosmopolitan pest of economic importance.It is controlled by using the Sterile Insect Technique(SIT),which involves rearing and release of sterile males destined to mate with wild fem...Ceratitis capitata(Wiedemann)is a cosmopolitan pest of economic importance.It is controlled by using the Sterile Insect Technique(SIT),which involves rearing and release of sterile males destined to mate with wild females,causing generation-to-generation suppression.Medflies are colonized by microorganisms,primarily the Enterobacteriaceae,with the genera Klebsiella and Enterobacter being the most common.Such microbiota contributes to host fitness.During the SIT,diet with antibiotics and irradiation for sterility of adults alter microbiota.We aimed to determine the role of Medfly microbiota on resistance to abiotic stress conditions,evaluating its function under:(i)starvation,(ii)elevated temperatures,and(iii)dry environments.These conditions simulate challenges Medfly may encounter after release,which differ from controlled rearing environments.We compared adult survival between symbiotic and aposymbiotic individuals,under starvation,two thermal regimes(25 and 30℃)or two humidity regimes(20%-25%and 80%-90%R.H.).Aposymbiotic individuals were obtained after providing them with water containing a mixture of antibiotics and methylparaben.Treatment with antimicrobials effectively reduced the gut microbiota.While starvation had no significant effect on survival,a higher proportion of aposymbiotic individuals died earlier at 30℃ and under dry humidity,with the effect being more pronounced after 48 h.Our results suggest that microbiota plays a role in adaptation of Medfly under environmental stress.We report for the presence of a culturable yeast in the digestive tract of C.capitata,Zygosaccharomyces rouxii.Providing a probiotic adult diet with bacteria and Z.rouxii prior to release could improve SIT outcomes under adverse conditions.展开更多
Objective:To investigate the potential of oral probiotics to improve sperm motility and decrease DNA fragmentation in men diagnosed with asthenozoospermia.Methods:Men diagnosed with asthenozoospermia,aged between 18 a...Objective:To investigate the potential of oral probiotics to improve sperm motility and decrease DNA fragmentation in men diagnosed with asthenozoospermia.Methods:Men diagnosed with asthenozoospermia,aged between 18 and 40 years,were randomly assigned to receive probiotic or placebo for 10 weeks.Sperm parameters(count,motility,and morphology)and seminal fluid biochemical markers were assessed using light microscopy and Diff-Quik staining.Intracellular reactive oxygen species levels were measured using the malondialdehyde(MDA)technique,while DNA fragmentation index(DFI)was evaluated through acidic aniline blue staining.Data from both groups were compared to determine the effects of probiotic supplementation.Results:Sixteen men were included.The probiotic group(n=8)showed a significant increase in total sperm motility(P<0.001)and progressive motility(P=0.003)compared to the placebo group(n=8).Additionally,sperm count in the probiotic group was significantly higher than in the placebo group,although other sperm parameters did not show significant changes.Notably,levels of MDA(P=0.027)and DFI(P=0.004)were significantly reduced in the probiotic group,indicating a decrease in oxidative stress and DNA damage.Conclusions:Probiotic supplementation effectively enhances sperm quality by mitigating oxidative stress and reducing DNA damage,thereby improving sperm motility in men with asthenozoospermia.Study registration:The trial was registered with the Iranian Registry of Clinical Trials(IRCT20220119053769N1).展开更多
The interplay between gut microbiota and host health has attracted significant interest in the animal science community.Maintaining gut microbiota homeostasis by supplementing probiotics to treat clinical conditions l...The interplay between gut microbiota and host health has attracted significant interest in the animal science community.Maintaining gut microbiota homeostasis by supplementing probiotics to treat clinical conditions like calf diarrhea is an emerging area of research nowadays because of increased concerns regarding antimicrobial resistance(AMR)and drug residues in animal products.Probiotics reduce the incidence of calf diarrhea by increasing the gut microbiota diversity and richness with more commensal bacteria such as Lactobacillus and Bifidobacterium that produce antimicrobial compounds,as well as modulating the immune response by increasing cytokines,Interleukin-2(IL-2),IL-4,IL-6,IL-10,and reducing tumor necrosis factor-α(TNF-α),by increasing production of antibodies,especially immunoglobulin E(Ig E),also Ig G,differentiating naive Th lymphocytes(Tho)into Th1,hence stimulate innate immunity and prime the adaptive immune response.Specific probiotic strains of bacteria and yeast(Saccharomyces cerevisiae)derived probiotics maintain the integrity of the intestinal barrier.In this review,data are being organized to address the role of probiotics in treating calf diarrhea by modulating gut microbiota and stimulating an immune response against notorious pathogens,to present animal and veterinary scientists and nutritionists with a new concept to treat infectious diseases from the perspective of the gut microbiota,increasing animal health,performance,and welfare.In conclusion,health status and gut microbiome are strongly interlinked.Research data indicated a significant reduction in the incidence of diarrhea after probiotic administration.If interrelations between probiotics and existing gut microbiota are explored more quantitatively,novel antibiotic substitutes can emerge in the future.展开更多
Probiotics can regulate the body’s immune system through both non-specific and specific immunity,thereby regulating host health.In terms of non-specific immune regulation,probiotics can activate the intrinsic immune ...Probiotics can regulate the body’s immune system through both non-specific and specific immunity,thereby regulating host health.In terms of non-specific immune regulation,probiotics can activate the intrinsic immune system,regulate the mucosal barrier function,and play an immune role by influencing the activity of intrinsic immune cells such as macrophages,dendritic cells and natural killer cells,as well as their differentiation and maturation;in terms of specific immune regulation,probiotics play a role in regulating the immunoglobulin level and the maturation of B cells.Probiotics can also regulate T-cell differentiation according to the condition of the body,thus regulating specific immunity.Many studies have focused on the role of probiotics in metabolism and nutrition,and the mechanisms involved in the immunomodulatory role of probiotics have only been partially described.This review summarises the role of common probiotics such as Lactobacillus plantarum and Lactobacillus rhamnosus in immunomodulation as well as their mechanisms,describing the currently known mechanisms of immunomodulation by probiotics in improving the host immune system.A deeper understanding of probiotics and their specific mechanisms of action will facilitate the use of probiotics for immunomodulation in clinical medicine,functional foods,and other areas.This will also contribute to the development and research of engineered probiotics,next-generation probiotics,and other new functional probiotics with immunomodulatory effects.展开更多
The pathophysiology of many ailments,including neurological,gastrointestinal,and metabolic disorders,is well known to be influenced by intestinal dysbiosis.Clinical research has provided evidence suggesting a strong c...The pathophysiology of many ailments,including neurological,gastrointestinal,and metabolic disorders,is well known to be influenced by intestinal dysbiosis.Clinical research has provided evidence suggesting a strong correlation between dysbiosis of the gut microbiome and colorectal cancer(CRC)development.The active reprogramming of metabolic pathways to boost glycolysis,fatty acid production,lipogenesis,and glutaminolysis constitutes a major metabolic shift in cancer development,including CRC.The complex combination of different factors leads to CRC,making it an environmental disease.These factors include food and lifestyle choices,genetics and family history,age,underlying intestinal diseases,and dysbiosis of the gut microbiota.One of the primary risk factors for carcinoma development is diet,which impacts an individual’s gut microbiome.In addition to impacting CRC formation,the gut microbiome also has immunomodulatory effects,including various immunological interactions and the underlying mechanisms governing them.Microbial interactions in CRC have been extensively studied,yet numerous unresolved queries exist on how gut bacteria can influence treatment.Microbiome-driven immunotherapies,focusing on probiotics,prebiotics,and synbiotics,represent a promising therapeutic avenue.However,large-scale treatment utilization in CRC patients is limited by several issues,including variations in the microbial makeup of each patient’s gut and a lack of established methods.The study highlights the impact of several risk factors,including dysbiosis of the gut microbiome and different approaches to halting and treating CRC progression with a focus on diet changes and modulation of the gut flora.Given the foregoing,we propose that if research gaps are addressed and immunotherapy is paired with microbial interventions,microbiota-based therapeutics could potentially impede the growth of tumors and treat CRC.展开更多
The mechanisms leading to neurological and neurodegenerative diseases are not completely known,and new,more effective,therapeutic treatments are necessary for most neurological pathologies.The treatment of neurologica...The mechanisms leading to neurological and neurodegenerative diseases are not completely known,and new,more effective,therapeutic treatments are necessary for most neurological pathologies.The treatment of neurological and neurodegenerative diseases is complicated due to the blood-brain barrier,which makes it difficult for drugs to access the brain areas in which they must act to improve the pathology.A tool that can help to overcome this difficulty is the use of extracellular vesicles,which can easily cross the blood-brain barrier.The extracellular vesicles are considered a main way of communication between the brain and the rest of the body,with important implications for the physiopathology and therapy of neurological diseases.In recent years,the involvement of microbiota in many neurological pathologies,as well as its possible therapeutic role,has also become evident.A key mediator in the pathologic and beneficial effects of microbiota seems to be the bacterial extracellular vesicles.There is an important communication between the brain and the intestinal microbiota(the gut-brain axis),by which the microbiota influences brain function,impacts on mental health,and plays a role in different neurological and neurodegenerative diseases.The identification of the mechanisms involved in this gut-brain axis is essential to understanding the mechanisms of neurological pathologies and to developing more effective treatments for these diseases.Bacterial extracellular vesicles would play a relevant role in these processes.This review compiles the recent information and evidence on the role of bacterial extracellular vesicles in brain pathologies and on the therapeutic utility of bacterial extracellular vesicles in neurological and neurodegenerative diseases.One advantage of bacterial extracellular vesicles compared to extracellular vesicles derived from other cell types,such as stem cells,is that bacterial extracellular vesicles are generally easier to produce and modify.Bacterial extracellular vesicles may be easily modified to target a specific pathology and/or to enhance its therapeutic efficacy.Although the studies are still scarce,they open a wide field of possibilities for future studies,which will lead to a deeper understanding of the role of microbiota and bacterial extracellular vesicles in neurological pathologies and the underlying mechanisms,as well as to the development of new treatments based on the use of bacterial extracellular vesicles in neurological diseases.展开更多
Background:The topic of this review is the study of the gut microbiota(GM),and the use of probiotics,especially in humans,as a new frontier in the field of prevention and health in general.The beneficial effects and f...Background:The topic of this review is the study of the gut microbiota(GM),and the use of probiotics,especially in humans,as a new frontier in the field of prevention and health in general.The beneficial effects and functions performed by probiotics in the GM are increasingly at the centre of both scientific,medical,and pharmaceutical interest.It is now known that diet and probiotics can modify the GM,although in these situations there is a need for greater and more in-depth research regarding the methods and timing of treatment.However,the relationship between physical activity,GM,and probiotics is still largely unclear,as regards certain mechanisms between physical exercise and probiotics in humans.Discussion:In this study,we tried to demonstrate whether and how physical exercise was able to alter the composition of the microbiota and how probiotics can facilitate it.Therefore,alteration of the microbiota was considered in terms of both diversity and composition.Conclusions:The ones examined propose vastly different physical exercises,both in terms of timing and type of intervention itself,and the use of probiotics.展开更多
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
Emerging evidence suggests that the gut microbiota is closely associated with the pathological manifestations of multiple neurodegenerative diseases via the gut-brain axis,which refers to the crosstalk between the gut...Emerging evidence suggests that the gut microbiota is closely associated with the pathological manifestations of multiple neurodegenerative diseases via the gut-brain axis,which refers to the crosstalk between the gut and the central nervous system.More importantly,mitochondria have been considered prominent mediators of the interplay between the gut microbiota and the brain.Intestinal microbes may modulate mitochondrial function in the central nervous system to affect the progression of neurodegenerative diseases.Mitochondria are essential for meeting the host’s substantial neuronal metabolic demands,maintaining excitability,and facilitating synaptic transmission.Dysfunctional mitochondria are considered critical hallmarks of various neurodegenerative diseases.Therefore,this review provides novel insights into the intricate roles of gut microbiota-mitochondrial crosstalk in the underlying mechanisms during the progression of neurodegeneration,as well as the existing potential therapeutic strategies for neurodegenerative disorders.These suggest intestinal microbiota-mitochondrial interaction play a crucial role in the occurrence and development of neurodegenerative diseases,and targeting this interaction may be a promising therapeutic approach to neurodegenerative diseases.However,this review found that there was relatively little research on the effect of this crosstalk on other neurodegenerative diseases,such as Huntington’s disease and Multiple sclerosis,and the potential therapeutic strategies were translated into clinical trials,which face many challenges in developing personalized treatment plans based on the unique gut microbiota of different individuals.展开更多
The term“gut microbiota”primarily refers to the ecological community of various microorganisms in the gut,which constitutes the largest microbial community in the human body.Although adequate bowel preparation can i...The term“gut microbiota”primarily refers to the ecological community of various microorganisms in the gut,which constitutes the largest microbial community in the human body.Although adequate bowel preparation can improve the results of colonoscopy,it may interfere with the gut microbiota.Bowel preparation for colonoscopy can lead to transient changes in the gut microbiota,potentially affecting an individual’s health,especially in vulnerable populations,such as patients with inflammatory bowel disease.However,measures such as oral pro-biotics may ameliorate these adverse effects.We focused on the bowel prepa-ration-induced changes in the gut microbiota and host health status,hypothesized the factors influencing these changes,and attempted to identify measures that may reduce dysbiosis,thereby providing more information for individualized bowel preparation for colonoscopy in the future.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
The gut microbiome comprises a vast community of microbes inhabiting the human alimentary canal,playing a crucial role in various physiological functions.These microbes generally live in harmony with the host;however,...The gut microbiome comprises a vast community of microbes inhabiting the human alimentary canal,playing a crucial role in various physiological functions.These microbes generally live in harmony with the host;however,when dysbiosis occurs,it can contribute to the pathogenesis of diseases,including osteoporosis.Osteoporosis,a systemic skeletal disease characterized by reduced bone mass and increased fracture risk,has attracted significant research attention concerning the role of gut microbes in its development.Advances in molecular biology have highlighted the influence of gut microbiota on osteoporosis through mechanisms involving immunoregulation,modulation of the gut-brain axis,and regulation of the intestinal barrier and nutrient absorption.These microbes can enhance bone mass by inhibiting osteoclast differentiation,inducing apoptosis,reducing bone resorption,and promoting osteoblast proliferation and maturation.Despite these promising findings,the therapeutic effectiveness of targeting gut microbes in osteoporosis requires further investigation.Notably,gut microbiota has been increasingly studied for their potential in early diagnosis,intervention,and as an adjunct therapy for osteoporosis,suggesting a growing utility in improving bone health.Further research is essential to fully elucidate the therapeutic potential and clinical application of gut microbiome modulation in the management of osteoporosis.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
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
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
Some research have shown that the combination of plant extracts and probiotics may be a better way to treat type 2 diabetes mellitus(T2DM)than a single intervention.However,there are still relatively few relevant repo...Some research have shown that the combination of plant extracts and probiotics may be a better way to treat type 2 diabetes mellitus(T2DM)than a single intervention.However,there are still relatively few relevant reports in this aspect.Therefore,this study aims to investigate whether the treatment of Polygonatum sibiricum saponin(PSS)and lactic acid bacteria(LAB)combination can better manage T2DM.And the anti-diabetes mechanism of the combination was studied from the perspectives of glucose metabolism,microbiome and metabolome.The results showed that PSS+LAB could better improve fasting blood glucose level,insulin sensitivity,lipid metabolism disorder,and liver function.Protein analysis showed that PSS+LAB treatment significantly increased the expression of phosphorylated-phosphatidylinositol 3 kinase(p-PI3K)/PI3K,phosphorylated-protein kinase B(p-AKT)/AKT,glucose transporter 2(GLUT2),insulin receptor substrate 2(IRS2),and glycogen synthase kinase 3β(GSK-3β)in the liver of T2DM mice,while inhibiting the expression of forkhead box protein O1(FoxO1).This combination positively regulated the composition and abundance of the gut microbiota.Metabolomic analysis showed that the combination treatment exhibited more changes in gut microbiota metabolites compared to PSS treatment alone.The alteration of gut microbiota by LAB+PSS led to significant changes in alanine,aspartate and glucose metabolism pathways.This study may provide a theoretical basis for the combined application of plant extracts and probiotics for the management of T2DM.展开更多
In the current era,metabolic dysfunction-associated steatotic liver disease(MASLD)has gradually developed into a major type of chronic liver disease that is widespread globally.Numerous studies have shown that the gut...In the current era,metabolic dysfunction-associated steatotic liver disease(MASLD)has gradually developed into a major type of chronic liver disease that is widespread globally.Numerous studies have shown that the gut microbiota plays a crucial and indispensable role in the progression of MASLD.Currently,the gut microbiota has become one of the important entry points for the research of this disease.Therefore,the aim of this review is to elaborate on the further associations between the gut microbiota and MASLD,including the changes and differences in the microbiota between the healthy liver and the diseased liver.Meanwhile,considering that metabolic dysfunction-associated fatty liver and metabolic dysfunction-associated steatohepatitis are abnormal pathological states in the development of the disease and that the liver exhibits different degrees of fibrosis(such as mild fibrosis and severe fibrosis)during the disease progression,we also conduct a comparison of the microbiota in these states and use them as markers of disease progression.It reveals the changes in the production and action mechanisms of short-chain fatty acids and bile acids brought about by changes in the gut microbiota,and the impact of lipopolysaccharide from Gram-negative bacteria on the disease.In addition,the regulation of the gut microbiota in disease and the production and inhibition of related disease factors by the use of probiotics(including new-generation probiotics)will be explored,which will help to monitor the disease progression of patients with different gut microbiota compositions in the future and carry out personalized targeted therapies for the gut microbiota.This will achieve important progress in preventing and combating this disease.展开更多
Chronic kidney disease(CKD)is a progressive disease with high morbidity and mortality.Disturbed gut microbiota and toxin accumulation are the main pathologic features of CKD.Current treatments are limited to those tha...Chronic kidney disease(CKD)is a progressive disease with high morbidity and mortality.Disturbed gut microbiota and toxin accumulation are the main pathologic features of CKD.Current treatments are limited to those that alleviate renal impairment in CKD patients,but few interventions are available that specifically target the regulatory mechanisms of gut microbiota.In this context,researchers urgently need new approaches that can significantly improve survival time and quality of life in these patients.In this review,we outline the involvement of the gut-kidney axis in kidney injury through disturbances of gut microbiota and dysregulation of endogenous metabolites,as well as the prominent contribution of gut microbiota in the discovery of CKD that can be used to prevent,diagnose,and treat CKD.Next,we describe several major metabolites associated with the host-gut microbiota that arise from the synthesis of microbial nutrient transformations and subsequent interactions with the kidney.Then,we summarize the role and potential targets of a compromised gut barrier in CKD.Finally,we discuss research advances in the prevention and treatments of CKD through probiotics modulation of gut microbiota structure to reduce enterogenous toxins and their maintenance of gut barrier function.A growing body of research suggests that intervention through probiotics may be a new and promising therapeutic strategy for CKD.展开更多
文摘Probiotical cell fragments (PCFs) are structural components of the probiotic cell lysate(s) and exhibit similar beneficial effects on the host as live probiotic bacteria. With cell fragment technology (CFT?), the structural fragments are isolated and purified from live probiotic cells. While observed to be strain-dependent as in the case of live probiotics, orally administered PCFs demonstrated a broad spectrum of immune modulation functions;anti-allergy;anti-inflammation;anti-bacterial and anti-viral properties;anti-mutagenic;and radioprotective and detoxification abilities in humans and animals. The PCFs mechanisms of action include events of motifs of cell wall peptidoglycans, DNA motifs, nucleotide containing components, lipoteichoic acids (LPAs), surface layer (S-layer) proteins, and cytoplasmic proteins. Different immunological in vivo-in vitro tests have shown that PCFs, essentially, have the ability to stimulate the macrophages, and induce cytokines such as interleukins, tumor necrosis factors (TNFs), interferons (IFNs), and natural killer (NK) cells. PCFs may be used as ingredients for foods and beverages or as nutritional supplements with long term stability and shelf-life up to 5 years. PCFs may also be used as health restorative ingredients in cosmetic products. The outcome of probiotics CFT? stands as an advantage to the food and pharmaceutical industries, regarding the formulation of novel products with unadulterated sensory characteristics of origin. Hence, PCFs are being characterized here as “novel nutraceutical ingredients” for health maintenance in both humans and animals.
文摘The evidence in this paper indicates that the alarming increase of common allergies can be reduced by the intake of particular “probiotics” or “paraprobiotics” along with food. This appears to build a consensus in the pharmaceutical and food communities about the role of probiotics in the prevention and treatments of common allergies. Food allergy is one of the common allergies, defined as an adverse health effect arising from a specific immune response that occurs reproducibly on exposure to a given food. Improving the digestion of foods and maintaining a healthy gastrointestinal (GI) tract is certainly critical to controlling food allergens. Therefore, the association between a leaky gut or an impaired intestinal permeability and food-allergenic reactions is explained. Gluten has been found to be somehow a justification for protein allergy, and should, therefore, be avoided by people with celiac disease. In several, in vitro models, surface layer (S- layer) proteins of selective paraprobiotics have shown potential in alleviating food allergies and intestinal disorders. Notably, lactobacilli paraprobiotics have proven to be the immediate immunomodulators against common allergies and other diseases, including viral (flu, hepatitis C), bacterial (bronchitis), asthma, chronic fatigue, fibromyalgia, gastrointestinal distress, and autism disorders in humans.
基金Fund for Scientific and Technological Research of Argentina(FONCyT PICT 2018 number 03521).
文摘Ceratitis capitata(Wiedemann)is a cosmopolitan pest of economic importance.It is controlled by using the Sterile Insect Technique(SIT),which involves rearing and release of sterile males destined to mate with wild females,causing generation-to-generation suppression.Medflies are colonized by microorganisms,primarily the Enterobacteriaceae,with the genera Klebsiella and Enterobacter being the most common.Such microbiota contributes to host fitness.During the SIT,diet with antibiotics and irradiation for sterility of adults alter microbiota.We aimed to determine the role of Medfly microbiota on resistance to abiotic stress conditions,evaluating its function under:(i)starvation,(ii)elevated temperatures,and(iii)dry environments.These conditions simulate challenges Medfly may encounter after release,which differ from controlled rearing environments.We compared adult survival between symbiotic and aposymbiotic individuals,under starvation,two thermal regimes(25 and 30℃)or two humidity regimes(20%-25%and 80%-90%R.H.).Aposymbiotic individuals were obtained after providing them with water containing a mixture of antibiotics and methylparaben.Treatment with antimicrobials effectively reduced the gut microbiota.While starvation had no significant effect on survival,a higher proportion of aposymbiotic individuals died earlier at 30℃ and under dry humidity,with the effect being more pronounced after 48 h.Our results suggest that microbiota plays a role in adaptation of Medfly under environmental stress.We report for the presence of a culturable yeast in the digestive tract of C.capitata,Zygosaccharomyces rouxii.Providing a probiotic adult diet with bacteria and Z.rouxii prior to release could improve SIT outcomes under adverse conditions.
基金supported by Kashan University of Medical Science,Kashan,Iran(Grant No.40001).
文摘Objective:To investigate the potential of oral probiotics to improve sperm motility and decrease DNA fragmentation in men diagnosed with asthenozoospermia.Methods:Men diagnosed with asthenozoospermia,aged between 18 and 40 years,were randomly assigned to receive probiotic or placebo for 10 weeks.Sperm parameters(count,motility,and morphology)and seminal fluid biochemical markers were assessed using light microscopy and Diff-Quik staining.Intracellular reactive oxygen species levels were measured using the malondialdehyde(MDA)technique,while DNA fragmentation index(DFI)was evaluated through acidic aniline blue staining.Data from both groups were compared to determine the effects of probiotic supplementation.Results:Sixteen men were included.The probiotic group(n=8)showed a significant increase in total sperm motility(P<0.001)and progressive motility(P=0.003)compared to the placebo group(n=8).Additionally,sperm count in the probiotic group was significantly higher than in the placebo group,although other sperm parameters did not show significant changes.Notably,levels of MDA(P=0.027)and DFI(P=0.004)were significantly reduced in the probiotic group,indicating a decrease in oxidative stress and DNA damage.Conclusions:Probiotic supplementation effectively enhances sperm quality by mitigating oxidative stress and reducing DNA damage,thereby improving sperm motility in men with asthenozoospermia.Study registration:The trial was registered with the Iranian Registry of Clinical Trials(IRCT20220119053769N1).
基金financial support from the Postdoctoral Fellowship Program of China Postdoctoral Science Foundation(GZC20230718)。
文摘The interplay between gut microbiota and host health has attracted significant interest in the animal science community.Maintaining gut microbiota homeostasis by supplementing probiotics to treat clinical conditions like calf diarrhea is an emerging area of research nowadays because of increased concerns regarding antimicrobial resistance(AMR)and drug residues in animal products.Probiotics reduce the incidence of calf diarrhea by increasing the gut microbiota diversity and richness with more commensal bacteria such as Lactobacillus and Bifidobacterium that produce antimicrobial compounds,as well as modulating the immune response by increasing cytokines,Interleukin-2(IL-2),IL-4,IL-6,IL-10,and reducing tumor necrosis factor-α(TNF-α),by increasing production of antibodies,especially immunoglobulin E(Ig E),also Ig G,differentiating naive Th lymphocytes(Tho)into Th1,hence stimulate innate immunity and prime the adaptive immune response.Specific probiotic strains of bacteria and yeast(Saccharomyces cerevisiae)derived probiotics maintain the integrity of the intestinal barrier.In this review,data are being organized to address the role of probiotics in treating calf diarrhea by modulating gut microbiota and stimulating an immune response against notorious pathogens,to present animal and veterinary scientists and nutritionists with a new concept to treat infectious diseases from the perspective of the gut microbiota,increasing animal health,performance,and welfare.In conclusion,health status and gut microbiome are strongly interlinked.Research data indicated a significant reduction in the incidence of diarrhea after probiotic administration.If interrelations between probiotics and existing gut microbiota are explored more quantitatively,novel antibiotic substitutes can emerge in the future.
基金funded by Ausnutria-kabrita Research Fund(RS2022-14).
文摘Probiotics can regulate the body’s immune system through both non-specific and specific immunity,thereby regulating host health.In terms of non-specific immune regulation,probiotics can activate the intrinsic immune system,regulate the mucosal barrier function,and play an immune role by influencing the activity of intrinsic immune cells such as macrophages,dendritic cells and natural killer cells,as well as their differentiation and maturation;in terms of specific immune regulation,probiotics play a role in regulating the immunoglobulin level and the maturation of B cells.Probiotics can also regulate T-cell differentiation according to the condition of the body,thus regulating specific immunity.Many studies have focused on the role of probiotics in metabolism and nutrition,and the mechanisms involved in the immunomodulatory role of probiotics have only been partially described.This review summarises the role of common probiotics such as Lactobacillus plantarum and Lactobacillus rhamnosus in immunomodulation as well as their mechanisms,describing the currently known mechanisms of immunomodulation by probiotics in improving the host immune system.A deeper understanding of probiotics and their specific mechanisms of action will facilitate the use of probiotics for immunomodulation in clinical medicine,functional foods,and other areas.This will also contribute to the development and research of engineered probiotics,next-generation probiotics,and other new functional probiotics with immunomodulatory effects.
文摘The pathophysiology of many ailments,including neurological,gastrointestinal,and metabolic disorders,is well known to be influenced by intestinal dysbiosis.Clinical research has provided evidence suggesting a strong correlation between dysbiosis of the gut microbiome and colorectal cancer(CRC)development.The active reprogramming of metabolic pathways to boost glycolysis,fatty acid production,lipogenesis,and glutaminolysis constitutes a major metabolic shift in cancer development,including CRC.The complex combination of different factors leads to CRC,making it an environmental disease.These factors include food and lifestyle choices,genetics and family history,age,underlying intestinal diseases,and dysbiosis of the gut microbiota.One of the primary risk factors for carcinoma development is diet,which impacts an individual’s gut microbiome.In addition to impacting CRC formation,the gut microbiome also has immunomodulatory effects,including various immunological interactions and the underlying mechanisms governing them.Microbial interactions in CRC have been extensively studied,yet numerous unresolved queries exist on how gut bacteria can influence treatment.Microbiome-driven immunotherapies,focusing on probiotics,prebiotics,and synbiotics,represent a promising therapeutic avenue.However,large-scale treatment utilization in CRC patients is limited by several issues,including variations in the microbial makeup of each patient’s gut and a lack of established methods.The study highlights the impact of several risk factors,including dysbiosis of the gut microbiome and different approaches to halting and treating CRC progression with a focus on diet changes and modulation of the gut flora.Given the foregoing,we propose that if research gaps are addressed and immunotherapy is paired with microbial interventions,microbiota-based therapeutics could potentially impede the growth of tumors and treat CRC.
基金funded by the Ministerio de Ciencia e Innovación Spain(PID2020-113388RB-I00,AEI/10.13039/501100011033)Consellería de Innovación,Universidades,Ciencia y Sociedad Digital,Generalitat Valenciana(CIPROM/2021/082)+2 种基金co-funded with European Regional Development Funds(ERDF)(PID2020-113388RB-I00,and CIPROM/2021/082)PID2022-136874OB-C33 from MCIN/AEI/10.13039/501100011033by the European Union NextGenerationEU/PRTR(to VF).
文摘The mechanisms leading to neurological and neurodegenerative diseases are not completely known,and new,more effective,therapeutic treatments are necessary for most neurological pathologies.The treatment of neurological and neurodegenerative diseases is complicated due to the blood-brain barrier,which makes it difficult for drugs to access the brain areas in which they must act to improve the pathology.A tool that can help to overcome this difficulty is the use of extracellular vesicles,which can easily cross the blood-brain barrier.The extracellular vesicles are considered a main way of communication between the brain and the rest of the body,with important implications for the physiopathology and therapy of neurological diseases.In recent years,the involvement of microbiota in many neurological pathologies,as well as its possible therapeutic role,has also become evident.A key mediator in the pathologic and beneficial effects of microbiota seems to be the bacterial extracellular vesicles.There is an important communication between the brain and the intestinal microbiota(the gut-brain axis),by which the microbiota influences brain function,impacts on mental health,and plays a role in different neurological and neurodegenerative diseases.The identification of the mechanisms involved in this gut-brain axis is essential to understanding the mechanisms of neurological pathologies and to developing more effective treatments for these diseases.Bacterial extracellular vesicles would play a relevant role in these processes.This review compiles the recent information and evidence on the role of bacterial extracellular vesicles in brain pathologies and on the therapeutic utility of bacterial extracellular vesicles in neurological and neurodegenerative diseases.One advantage of bacterial extracellular vesicles compared to extracellular vesicles derived from other cell types,such as stem cells,is that bacterial extracellular vesicles are generally easier to produce and modify.Bacterial extracellular vesicles may be easily modified to target a specific pathology and/or to enhance its therapeutic efficacy.Although the studies are still scarce,they open a wide field of possibilities for future studies,which will lead to a deeper understanding of the role of microbiota and bacterial extracellular vesicles in neurological pathologies and the underlying mechanisms,as well as to the development of new treatments based on the use of bacterial extracellular vesicles in neurological diseases.
文摘Background:The topic of this review is the study of the gut microbiota(GM),and the use of probiotics,especially in humans,as a new frontier in the field of prevention and health in general.The beneficial effects and functions performed by probiotics in the GM are increasingly at the centre of both scientific,medical,and pharmaceutical interest.It is now known that diet and probiotics can modify the GM,although in these situations there is a need for greater and more in-depth research regarding the methods and timing of treatment.However,the relationship between physical activity,GM,and probiotics is still largely unclear,as regards certain mechanisms between physical exercise and probiotics in humans.Discussion:In this study,we tried to demonstrate whether and how physical exercise was able to alter the composition of the microbiota and how probiotics can facilitate it.Therefore,alteration of the microbiota was considered in terms of both diversity and composition.Conclusions:The ones examined propose vastly different physical exercises,both in terms of timing and type of intervention itself,and the use of probiotics.
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 General Program of National Natural Science Foundation of China,No.82370986(to LAW)Shaanxi Provincial NaturalScience Foundation Key Project,No.2023-JC-ZD-56(to SS).
文摘Emerging evidence suggests that the gut microbiota is closely associated with the pathological manifestations of multiple neurodegenerative diseases via the gut-brain axis,which refers to the crosstalk between the gut and the central nervous system.More importantly,mitochondria have been considered prominent mediators of the interplay between the gut microbiota and the brain.Intestinal microbes may modulate mitochondrial function in the central nervous system to affect the progression of neurodegenerative diseases.Mitochondria are essential for meeting the host’s substantial neuronal metabolic demands,maintaining excitability,and facilitating synaptic transmission.Dysfunctional mitochondria are considered critical hallmarks of various neurodegenerative diseases.Therefore,this review provides novel insights into the intricate roles of gut microbiota-mitochondrial crosstalk in the underlying mechanisms during the progression of neurodegeneration,as well as the existing potential therapeutic strategies for neurodegenerative disorders.These suggest intestinal microbiota-mitochondrial interaction play a crucial role in the occurrence and development of neurodegenerative diseases,and targeting this interaction may be a promising therapeutic approach to neurodegenerative diseases.However,this review found that there was relatively little research on the effect of this crosstalk on other neurodegenerative diseases,such as Huntington’s disease and Multiple sclerosis,and the potential therapeutic strategies were translated into clinical trials,which face many challenges in developing personalized treatment plans based on the unique gut microbiota of different individuals.
文摘The term“gut microbiota”primarily refers to the ecological community of various microorganisms in the gut,which constitutes the largest microbial community in the human body.Although adequate bowel preparation can improve the results of colonoscopy,it may interfere with the gut microbiota.Bowel preparation for colonoscopy can lead to transient changes in the gut microbiota,potentially affecting an individual’s health,especially in vulnerable populations,such as patients with inflammatory bowel disease.However,measures such as oral pro-biotics may ameliorate these adverse effects.We focused on the bowel prepa-ration-induced changes in the gut microbiota and host health status,hypothesized the factors influencing these changes,and attempted to identify measures that may reduce dysbiosis,thereby providing more information for individualized bowel preparation for colonoscopy in the future.
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.
文摘The gut microbiome comprises a vast community of microbes inhabiting the human alimentary canal,playing a crucial role in various physiological functions.These microbes generally live in harmony with the host;however,when dysbiosis occurs,it can contribute to the pathogenesis of diseases,including osteoporosis.Osteoporosis,a systemic skeletal disease characterized by reduced bone mass and increased fracture risk,has attracted significant research attention concerning the role of gut microbes in its development.Advances in molecular biology have highlighted the influence of gut microbiota on osteoporosis through mechanisms involving immunoregulation,modulation of the gut-brain axis,and regulation of the intestinal barrier and nutrient absorption.These microbes can enhance bone mass by inhibiting osteoclast differentiation,inducing apoptosis,reducing bone resorption,and promoting osteoblast proliferation and maturation.Despite these promising findings,the therapeutic effectiveness of targeting gut microbes in osteoporosis requires further investigation.Notably,gut microbiota has been increasingly studied for their potential in early diagnosis,intervention,and as an adjunct therapy for osteoporosis,suggesting a growing utility in improving bone health.Further research is essential to fully elucidate the therapeutic potential and clinical application of gut microbiome modulation in the management of osteoporosis.
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.
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 National Natural Science Foundation of China(32000252)Natural Science Foundation of Heilongjiang Province of China(YQ2020C014,ZD2019C002)National Key Research and Development Program of China(2017YFC1601901)。
文摘Some research have shown that the combination of plant extracts and probiotics may be a better way to treat type 2 diabetes mellitus(T2DM)than a single intervention.However,there are still relatively few relevant reports in this aspect.Therefore,this study aims to investigate whether the treatment of Polygonatum sibiricum saponin(PSS)and lactic acid bacteria(LAB)combination can better manage T2DM.And the anti-diabetes mechanism of the combination was studied from the perspectives of glucose metabolism,microbiome and metabolome.The results showed that PSS+LAB could better improve fasting blood glucose level,insulin sensitivity,lipid metabolism disorder,and liver function.Protein analysis showed that PSS+LAB treatment significantly increased the expression of phosphorylated-phosphatidylinositol 3 kinase(p-PI3K)/PI3K,phosphorylated-protein kinase B(p-AKT)/AKT,glucose transporter 2(GLUT2),insulin receptor substrate 2(IRS2),and glycogen synthase kinase 3β(GSK-3β)in the liver of T2DM mice,while inhibiting the expression of forkhead box protein O1(FoxO1).This combination positively regulated the composition and abundance of the gut microbiota.Metabolomic analysis showed that the combination treatment exhibited more changes in gut microbiota metabolites compared to PSS treatment alone.The alteration of gut microbiota by LAB+PSS led to significant changes in alanine,aspartate and glucose metabolism pathways.This study may provide a theoretical basis for the combined application of plant extracts and probiotics for the management of T2DM.
基金Supported by Natural Science Foundation of Chongqing,No.cstc2021jcyj-msxmx0848Chongqing Bishan Scientific Research Project,No.BSKJ2022006+1 种基金National Natural Science Foundation of China,No.81773954National College Students Innovation and Entrepreneurship Program,No.202310617015.
文摘In the current era,metabolic dysfunction-associated steatotic liver disease(MASLD)has gradually developed into a major type of chronic liver disease that is widespread globally.Numerous studies have shown that the gut microbiota plays a crucial and indispensable role in the progression of MASLD.Currently,the gut microbiota has become one of the important entry points for the research of this disease.Therefore,the aim of this review is to elaborate on the further associations between the gut microbiota and MASLD,including the changes and differences in the microbiota between the healthy liver and the diseased liver.Meanwhile,considering that metabolic dysfunction-associated fatty liver and metabolic dysfunction-associated steatohepatitis are abnormal pathological states in the development of the disease and that the liver exhibits different degrees of fibrosis(such as mild fibrosis and severe fibrosis)during the disease progression,we also conduct a comparison of the microbiota in these states and use them as markers of disease progression.It reveals the changes in the production and action mechanisms of short-chain fatty acids and bile acids brought about by changes in the gut microbiota,and the impact of lipopolysaccharide from Gram-negative bacteria on the disease.In addition,the regulation of the gut microbiota in disease and the production and inhibition of related disease factors by the use of probiotics(including new-generation probiotics)will be explored,which will help to monitor the disease progression of patients with different gut microbiota compositions in the future and carry out personalized targeted therapies for the gut microbiota.This will achieve important progress in preventing and combating this disease.
基金supported by the Shandong Taishan Industry Leading Talent Project(LJNY202101)Fundamental Research Funds for the Central Universities(202313041)Qingdao Postdoctoral Applied Research Project(QDBSH20220202059).
文摘Chronic kidney disease(CKD)is a progressive disease with high morbidity and mortality.Disturbed gut microbiota and toxin accumulation are the main pathologic features of CKD.Current treatments are limited to those that alleviate renal impairment in CKD patients,but few interventions are available that specifically target the regulatory mechanisms of gut microbiota.In this context,researchers urgently need new approaches that can significantly improve survival time and quality of life in these patients.In this review,we outline the involvement of the gut-kidney axis in kidney injury through disturbances of gut microbiota and dysregulation of endogenous metabolites,as well as the prominent contribution of gut microbiota in the discovery of CKD that can be used to prevent,diagnose,and treat CKD.Next,we describe several major metabolites associated with the host-gut microbiota that arise from the synthesis of microbial nutrient transformations and subsequent interactions with the kidney.Then,we summarize the role and potential targets of a compromised gut barrier in CKD.Finally,we discuss research advances in the prevention and treatments of CKD through probiotics modulation of gut microbiota structure to reduce enterogenous toxins and their maintenance of gut barrier function.A growing body of research suggests that intervention through probiotics may be a new and promising therapeutic strategy for CKD.
