Synapses are key structures involved in transmitting information in the nervous system,and their functions rely on the regulation of various lipids.Lipids play important roles in synapse formation,neurotransmitter rel...Synapses are key structures involved in transmitting information in the nervous system,and their functions rely on the regulation of various lipids.Lipids play important roles in synapse formation,neurotransmitter release,and signal transmission,and dysregulation of lipid metabolism is closely associated with various neurodegenerative diseases.The complex roles of lipids in synaptic function and neurological diseases have recently garnered increasing attention,but their specific mechanisms remain to be fully understood.This review aims to explore how lipids regulate synaptic activity in the central nervous system,focusing on their roles in synapse formation,neurotransmitter release,and signal transmission.Additionally,it discusses the mechanisms by which glial cells modulate synaptic function through lipid regulation.This review shows that within the central nervous system,lipids are essential components of the cell membrane bilayer,playing critical roles in synaptic structure and function.They regulate presynaptic vesicular trafficking,postsynaptic signaling pathways,and glial-neuronal interactions.Cholesterol maintains membrane fluidity and promotes the formation of lipid rafts.Glycerophospholipids contribute to the structural integrity of synaptic membranes and are involved in the release of synaptic vesicles.Sphingolipids interact with synaptic receptors through various mechanisms to regulate their activity and are also involved in cellular processes such as inflammation and apoptosis.Fatty acids are vital for energy metabolism and the synthesis of signaling molecules.Abnormalities in lipid metabolism may lead to impairments in synaptic function,affecting information transmission between neurons and the overall health of the nervous system.Therapeutic strategies targeting lipid metabolism,particularly through cholesterol modulation,show promise for treating these conditions.In neurodegenerative diseases such as Alzheimer’s disease,Parkinson disease,and amyotrophic lateral sclerosis,dysregulation of lipid metabolism is closely linked to synaptic dysfunction.Therefore,lipids are not only key molecules in neural regeneration and synaptic repair but may also contribute to neurodegenerative pathology when metabolic dysregulation occurs.Further research is needed to elucidate the specific mechanisms linking lipid metabolism to synaptic dysfunction and to develop targeted lipid therapies for neurological diseases.展开更多
A key pathological feature of Parkinson’s disease(PD)is that lysosomes are overwhelmed with cellular materials that need to be degraded and cleared.While the build-up of protein is characteristic of neurodegenerative...A key pathological feature of Parkinson’s disease(PD)is that lysosomes are overwhelmed with cellular materials that need to be degraded and cleared.While the build-up of protein is characteristic of neurodegenerative diseases such as PD and Alzheimer’s disease(AD)and is thought to reflect lysosome dysfunction,lipid accumulation may also contribute to and be indicative of severe lysosomal dysfunction.Much is known about the detrimental effects of glucosylceramide accumulation in PD lysosomes.展开更多
Background:“Qi deficiency”(a pathological state where the body’s vital energy(Qi)is insufficient or weakened,impairing physiological functions and diminishing the body’s ability to perform daily activities,defend ...Background:“Qi deficiency”(a pathological state where the body’s vital energy(Qi)is insufficient or weakened,impairing physiological functions and diminishing the body’s ability to perform daily activities,defend against illness,and maintain homeostasis)syndrome is considered a critical syndrome in traditional Chinese medicine(TCM)and is associated with poor prognosis in heart failure(HF).This study investigates the clinical,metabolic,and transcriptomic differences between heart failure patients with and without Qi deficiency syndrome.Methods:56 heart failure patients were evaluated using a Qi deficiency syndrome scale and divided into Qi deficiency syndrome(QD)and non-Qi deficiency(non-QD)groups based on the median score.Clinical characteristics,including baseline N-terminal pro-B-type natriuretic peptide(NT-proBNP),left ventricular ejection fraction(LVEF),total diuretic use during hospitalization,and 90-day rehospitalization rates,were compared between the groups.Differentially expressed genes(DEGs)and differential metabolites were identified,followed by enrichment analyses and validation using qPCR and Western blot in AC16 cardiomyocytes.Results:QD patients exhibited significantly higher NT-proBNP levels,lower LVEF,and increased 90-day rehospitalization rates.Metabolomic profiling revealed lipid metabolism disruptions,notably in linoleic acid and phospholipid pathways.Transcriptomic analysis highlighted 17 DEGs,including CISD2,a critical mitochondrial regulator,which was downregulated in QD patients.Correlation analysis identified significant associations between DEGs(e.g.,CISD2,BPGM)and lipid metabolites such as PC(16:0/P-16:0).Functional knockdown of CISD2 in AC16 cells led to upregulation of lipid oxidation enzymes ALOX15 and CYP1A2,linking CISD2 dysfunction to lipid metabolic dysregulation.Conclusion:Qi deficiency is associated with more severe heart failure symptoms,worse prognosis,and distinct metabolic and transcriptomic profiles,particularly in lipid metabolism.CISD2 emerges as a potential therapeutic target,offering new avenues for integrating molecular insights with TCM approaches to optimize HF management.展开更多
Lipid droplets serve as primary storage organelles for neutral lipids in neurons,glial cells,and other cells in the nervous system.Lipid droplet formation begins with the synthesis of neutral lipids in the endoplasmic...Lipid droplets serve as primary storage organelles for neutral lipids in neurons,glial cells,and other cells in the nervous system.Lipid droplet formation begins with the synthesis of neutral lipids in the endoplasmic reticulum.Previously,lipid droplets were recognized for their role in maintaining lipid metabolism and energy homeostasis;however,recent research has shown that lipid droplets are highly adaptive organelles with diverse functions in the nervous system.In addition to their role in regulating cell metabolism,lipid droplets play a protective role in various cellular stress responses.Furthermore,lipid droplets exhibit specific functions in neurons and glial cells.Dysregulation of lipid droplet formation leads to cellular dysfunction,metabolic abnormalities,and nervous system diseases.This review aims to provide an overview of the role of lipid droplets in the nervous system,covering topics such as biogenesis,cellular specificity,and functions.Additionally,it will explore the association between lipid droplets and neurodegenerative disorders.Understanding the involvement of lipid droplets in cell metabolic homeostasis related to the nervous system is crucial to determine the underlying causes and in exploring potential therapeutic approaches for these diseases.展开更多
When mammals are exposed to cold,their metabolism undergoes substantial changes.The liver plays a central role in maintaining energy homeostasis by shifting from glucose metabolism to lipid catabolism.A recent study b...When mammals are exposed to cold,their metabolism undergoes substantial changes.The liver plays a central role in maintaining energy homeostasis by shifting from glucose metabolism to lipid catabolism.A recent study by Davidson et al.^([1]),published in Cell Metabolism,highlights a novel mechanism involving lysosomal lipid remodeling during cold adaptation.Specifically,the study reveals that cold exposure elevates hepatic levels of Bis(Monoacylglycerol)Phosphate(BMP)lipids,which are regulated by Transcription Factor EB(TFEB)and Phospholipase A2 group XV(PLA2G15).展开更多
BACKGROUND Probiotic Acetobacter pasteurianus is used to treat diabetes,but its specific hypoglycemic substances and mechanisms remain unclear.AIM To investigate the components for lipid metabolism of A.pasteurianus a...BACKGROUND Probiotic Acetobacter pasteurianus is used to treat diabetes,but its specific hypoglycemic substances and mechanisms remain unclear.AIM To investigate the components for lipid metabolism of A.pasteurianus and its hypoglycemic effects,providing a basis for its broader application.METHODS The lipid metabolism of A.pasteurianus under different growth conditions was analyzed using lipidomics.Neutral lipid staining in A.pasteurianus cells and the formation of lipid droplet-like structures were observed using a confocal laser scanning microscope.The neutral lipid components were also analyzed using thin layer chromato-graphy.A diabetic mouse model was established to evaluate the hypoglycemic effects of the main lipid components of A.pasteurianus and their role in repairing tissues such as the pancreas.RESULTS After comparing the effects of three culture media,namely,brain heart infusion(BHI)medium with 2%glucose,chromium-rich and zinc-rich medium,and mineral salt medium,A.pasteurianus grew well in BHI containing 2%glucose and produced the most lipids.A total of 583 lipid metabolic products was identified,with higher levels of coenzyme Q9(CoQ9),oleic acid(OA),and wax ester,but no triacylglycerol was observed.It was found that the components that affected lipid metabolism in A.pasteurianus were mainly CoQ9 and OA.They exhibited hypoglycemic effects comparable to metformin in diabetic mice,repaired damaged pancreatic tissues,and did not cause damage to the liver and spleen.CONCLUSION Under high-nutrient growth conditions,A.pasteurianus contains abundant lipid components,such as CoQ9 and OA,with good hypoglycemic effects.展开更多
BACKGROUND Dyslipidemia was strongly linked to stroke,however the relationship between dyslipidemia and its components and ischemic stroke remained unexplained.AIM To investigate the link between longitudinal changes ...BACKGROUND Dyslipidemia was strongly linked to stroke,however the relationship between dyslipidemia and its components and ischemic stroke remained unexplained.AIM To investigate the link between longitudinal changes in lipid profiles and dyslipidemia and ischemic stroke in a hypertensive population.METHODS Between 2013 and 2014,6094 hypertension individuals were included in this,and ischemic stroke cases were documented to the end of 2018.Longitudinal changes of lipid were stratified into four groups:(1)Normal was transformed into normal group;(2)Abnormal was transformed into normal group;(3)Normal was transformed into abnormal group;and(4)Abnormal was transformed into abnormal group.To examine the link between longitudinal changes in dyslipidemia along with its components and the risk of ischemic stroke,we utilized multivariate Cox proportional hazards models with hazard ratio(HR)and 95%CI.RESULTS The average age of the participants was 62.32 years±13.00 years,with 329 women making up 54.0%of the sample.Over the course of a mean follow-up of 4.8 years,143 ischemic strokes happened.When normal was transformed into normal group was used as a reference,after full adjustments,the HR for dyslipidemia and ischemic stroke among abnormal was transformed into normal group,normal was transformed into abnormal group and abnormal was transformed into abnormal Wei CC et al.Dyslipidemia changed and ischemic stroke WJCC https://www.wjgnet.com 2 February 6,2025 Volume 13 Issue 4 group were 1.089(95%CI:0.598-1.982;P=0.779),2.369(95%CI:1.424-3.941;P<0.001)and 1.448(95%CI:1.002-2.298;P=0.047)(P for trend was 0.233),respectively.CONCLUSION In individuals with hypertension,longitudinal shifts from normal to abnormal in dyslipidemia-particularly in total and low-density lipoprotein cholesterol-were significantly associated with the risk of ischemic stroke.展开更多
mRNA is a highly promising approach for disease prevention,yet its further application is currently limited by the low efficiency of delivery.Lipid nanoparticles(LNPs)are the mainstream delivery vehicles at present,an...mRNA is a highly promising approach for disease prevention,yet its further application is currently limited by the low efficiency of delivery.Lipid nanoparticles(LNPs)are the mainstream delivery vehicles at present,and ionizable lipids,as a key component,have a particularly significant impact on delivery efficiency.To improve the efficiency of delivery,a library of ionizable lipids with tetra-branched hydrophobic tails was designed and synthesized by the Michael addition reaction.From this library,the lipid 10A was selected for the highest delivery efficiency.Further formulation screening yielded LNPs with excellent performance,which showed good efficacy in tumor prevention experiments.At the same time,the structure-activity relationship between the ionizable lipid structure and the delivery efficiency was elucidated.It was that the tetra-branched hydrophobic tails,as compared with the di-branched hydrophobic tails enhanced the stability of LNPs,provided uniformity of particle size and improved the efficiency of endocytosis and lysosomal escape,resulting in higher delivery efficiency.Meanwhile,tetra-branched lipids with hydroxyl groups in the head group performed even better.This research provides a theoretical basis and foundation for guiding the development of the next generation of ionizable lipids,and the developed 10A LNP also shows broad prospects for clinical translation.展开更多
Ferroptosis is a new regulated cell death process executed by lipid peroxidation(LPO)of polyunsaturated fatty acids.Lipid droplets(LDs),as an important organelle for lipid storage and metabolism,are probably a major s...Ferroptosis is a new regulated cell death process executed by lipid peroxidation(LPO)of polyunsaturated fatty acids.Lipid droplets(LDs),as an important organelle for lipid storage and metabolism,are probably a major site of LPO and play critical roles in the regulation of ferroptosis.However,the detailed study on LPO in LDs has not been carried out because of the lack of LD-targeting tools for the in situ monitoring of LPO.Herein,the first LD-targeting LPO fluorescence probe(LD-LPO)has been developed.LD-LPO exhibits a rapid and selective fluorescence enhancement at 518 nm,which is unaffected by highly destructive reactive oxygen species(e.g.,hydroxyl radical)and environmental factor changes(e.g.,polarity and viscosity).LD-LPO is capable of targeting LDs and visualizing LPO within LDs in situ during erastin-or(1S,3R)-RSL3(RSL3)-induced ferroptosis.Moreover,LD-LPO has also been used to image LPO in the ferroptosis-associated non-alcoholic fatty liver disease(NAFLD),and to evaluate the medicine treatment of NAFLD with saroglitazar,demonstrating its utility for monitoring LPO levels in biosystems.The favorable analytical and imaging performance of LD-LPO may allow its application in more ferroptosisassociated physiological and pathological processes.展开更多
BACKGROUND Metabolic dysfunction-associated steatotic liver disease(MASLD)has emerged as a prominent and pervasive global health challenge.Bicuculline(BIC),which is a key active component of the anti-MASLD prescriptio...BACKGROUND Metabolic dysfunction-associated steatotic liver disease(MASLD)has emerged as a prominent and pervasive global health challenge.Bicuculline(BIC),which is a key active component of the anti-MASLD prescription"Eight Zhes Decoction",has been preliminarily shown by our research team to have significant potential in treating MASLD.AIM To determine BIC's efficacy in treating MASLD by regulating lipid metabolism and suppressing hepatic inflammation via nuclear factor-kappa B(NF-κB)pathway,identifying it as a therapeutic candidate.METHODS This study explored the potential of BIC in preventing and treating MASLD using zebrafish,cellular(HepG2 and AML12),and mouse models.RESULTS Our results indicate that BIC significantly reduces lipid accumulation and inflammation both in vivo and in vitro.Transcriptomic analysis suggested that the anti-MASLD effects of BIC are linked to the inhibition of the NF-κB pathway,which plays a critical role in mitigating inflammation and lipid deposition.CONCLUSION This study is the first to demonstrate that BIC specifically alleviates lipid accumulation and hepatic steatosis in MASLD models via the NF-κB signaling pathway.Overall,BIC has emerged as a promising candidate for treating MASLD.展开更多
Lipid peroxidation(LPO)in foam cells is crucial for regulating atherosclerosis progression.It correlates with lipid uptake and the state of lipid droplets.In this study,we report a lipid droplet-targeted fluorescent L...Lipid peroxidation(LPO)in foam cells is crucial for regulating atherosclerosis progression.It correlates with lipid uptake and the state of lipid droplets.In this study,we report a lipid droplet-targeted fluorescent LPO probe,Ld-LPO.It selectively responds to LPO,resulting in a significant fluorescence shift from 590 to 525 nm,enabling a ratiometric imaging of LPO in lipid droplets.Ld-LPO traces lipid droplets in foam cells,revealing a correlation between LPO and lysosomal engulfment.We found that lipid droplets engulfed by lysosomes exhibit higher LPO,attributed to low-density lipoprotein accumulation in lysosomes.Furthermore,Ld-LPO is compatible with dual-color flow cytometry,facilitating highthroughput analysis of LPO in foam cells.展开更多
BACKGROUND The global rise in overweight and obesity has reached alarming levels,substantially increasing the risk of metabolic disorders such as dyslipidemia.We outlined the evolving trends in baseline blood lipid le...BACKGROUND The global rise in overweight and obesity has reached alarming levels,substantially increasing the risk of metabolic disorders such as dyslipidemia.We outlined the evolving trends in baseline blood lipid levels among patients experiencing overweight or obesity,as observed in placebo-controlled randomized trials,to address the unmet clinical requirements.AIM To assess long-term trends in lipid profiles in overweight or obese populations and their association with clinical and treatment factors.METHODS EMBASE,PubMed,Cochrane Library,and Web of Science databases were searched up to October 9,2024.Randomized placebo-controlled trials of participants with overweight or obesity,with reports of baseline lipid levels,were included.The main outcome was a correlation between pooled baseline levels of triglycerides(TG),total cholesterol(TC),high-density lipoprotein cholesterol(HDL-C),and low-density lipoprotein cholesterol(LDL-C)with study year.Subgroup analysis was conducted based on characteristics of the populations and intervention types.RESULTS A comprehensive meta-analysis encompassing 866 studies across nearly 60 countries and regions worldwide,involving 3300 participants,revealed significant temporal trends in baseline lipid profiles.The analysis revealed a significant decline in TG(Rs=-0.704,P<0.001,I^(2)=98.6%),TC(Rs=-0.884,P<0.001,I^(2)=99.6%),and LDL-C(Rs=-0.808,P<0.001,I^(2)=96.8%)levels.In contrast,HDL-C(Rs=0.336,P=0.041,I^(2)=99.2%)levels exhibited a progressive increase over the study period.Subgroup analyses revealed that sex,body mass index,blood pressure,diabetes status,and type of intervention influenced the observed trends,especially with patients receiving pharmacological therapies demonstrating more pronounced improvements(TG:Rs=-0.449,P_(adj)=0.011;I^(2)=98.9%;TC:Rs=-0.650,P_(adj)=0.001;I^(2)=99.4%;HDL-C:Rs=0.650,P_(adj)=0.002;I^(2)=98.6%;LDL-C:Rs=-0.417,P_(adj)=0.031;I²=98.0%).CONCLUSION Despite rising obesity rates,lipid control has improved over three decades among individuals with overweight or obesity,reflecting the positive impact of public health efforts and effective dyslipidemia treatment strategies.展开更多
Fucoxanthin,a kind of exclusively algae-derived carotenoids,could reduce lipid content and regulate gut microbiota composition in obese mice,showing potential in preventing hyperlipidemia.This study aimed to illustrat...Fucoxanthin,a kind of exclusively algae-derived carotenoids,could reduce lipid content and regulate gut microbiota composition in obese mice,showing potential in preventing hyperlipidemia.This study aimed to illustrate fucoxanthin efficacy in modulating lipid metabolism in serum and liver of high-fat-induced hyperlipidemia mice,as well as investigate the underlying association with gut microbiota changes.Results showed that fucoxanthin significantly reduced body weight gain and body white fat of the mice.In the serum,total triglycerides(TG),total cholesterol(TC)contents were significantly decreased and high-densitylipoprotein cholesterol levels was significantly upregulated.Moreover,fucoxanthin remarkedly prevented lipid accumulation in the liver.Especially,metabolomics results showed that lipids and lipid-like molecules were significantly downregulated compared with the control,indicating the advance of hepatic lipid metabolism.Bile acids profile in the liver was also greatly changed by fucoxanthin.Meanwhile,fucoxanthin remodeled gut microbiota composition and promoted the relative abundance of Desulfovibrio,Blautia and Clostridia genera.Finally,correlation analysis revealed that these gut microbiota changes were closely related with hepatic metabolites/metabolism and serum lipids.Altogether,this study showed great potential of fucoxanthin in improving serum lipids profile,hepatic lipids and bile acids metabolism of hyperlipidemia mice,which was associated with gut microbiota alteration.展开更多
Background The objective of this study was to evaluate the effects of dietary fatty acids(FA)saturation and lysophospholipids supplementation on growth,meat quality,oxidative stability,FA profiles,and lipid metabolism...Background The objective of this study was to evaluate the effects of dietary fatty acids(FA)saturation and lysophospholipids supplementation on growth,meat quality,oxidative stability,FA profiles,and lipid metabolism of finishing beef bulls.Thirty-two Angus bulls(initial body weight:623±22.6 kg;21±0.5 months of age)were used.The experiment was a completely randomized block design with a 2×2 factorial arrangement of treatments:2 diets with FA of different degree of unsaturation[high saturated FA diet(HSFA)vs.high unsaturated FA diet(HUFA)]combined with(0.075%,dry matter basis)and without lysophospholipids supplementation.The bulls were fed a high-concentrate diet(forage to concentrate,15:85)for 104 d including a 14-d adaptation period and a 90-d data and sample collection period.Results No interactions were observed between dietary FA and lysophospholipids supplementation for growth and meat quality parameters.A greater dietary ratio of unsaturated FA(UFA)to saturated FA(SFA)from 1:2 to 1:1 led to lower DM intake and backfat thickness,but did not affect growth performance and other carcass traits.Compared with HSFA,bulls fed HUFA had greater shear force in Longissimus thoracis(LT)muscle,but had lower intramuscular fat(IMF)content and SOD content in LT muscle.Compared with HUFA,feeding the HSFA diet up-regulated expression of ACC,FAS,PPARγ,and SCD1,but down-regulated expression of CPT1B.Compared with feeding HSFA,the HUFA diet led to greater concentrations of c9-C18:1 and other monounsaturated FA in LT muscle.Feeding HUFA also led to lower plasma concentrations of cholesterol,but there were no interactions between FA and lysophospholipids detected.Feeding lysophospholipids improved growth and feed conversion ratio and altered meat quality by increasing muscle pH_(24h),redness values(24 h),IMF content,and concentrations of C18:3,C20:5 and total polyunsaturated fatty acids.Furthermore,lysophospholipids supplementation led to lower malondialdehyde content and up-regulated the expression of ACC,FAS,and LPL in LT muscle.Conclusions Results indicated that supplementing a high-concentrate diet with lysophospholipids to beef bulls can enhance growth rate,feed efficiency,meat quality,and beneficial FA.Increasing the dietary ratio of UFA to SFA reduced DM intake and backfat thickness without compromising growth,suggesting potential improvements in feed efficiency.展开更多
Objective Lipid oxidation is involved in the pathogenesis of atherosclerosis and may be contribute to the development of Ischemic stroke(IS).However,the lipid profiles associated with IS have been poorly studied.We co...Objective Lipid oxidation is involved in the pathogenesis of atherosclerosis and may be contribute to the development of Ischemic stroke(IS).However,the lipid profiles associated with IS have been poorly studied.We conducted a pilot study to identify potential IS-related lipid molecules and pathways using lipidomic profiling.Methods Serum lipidomic profiling was performed using LC-MS in 20 patients with IS and 20 age-and sex-matched healthy controls.Univariate and multivariate analyses were simultaneously performed to identify the differential lipids.Multiple testing was controlled for using a false discovery rate(FDR)approach.Enrichment analysis was performed using MetaboAnalyst software.Results Based on the 294 lipids assayed,principal component analysis(PCA)and orthogonal partial least squares discriminant analysis(OPLS-DA)models were used to distinguish patients with IS from healthy controls.Fifty-six differential lipids were identified with an FDR-adjusted P less than 0.05 and variable influences in projection(VIP)greater than 1.0.These lipids were significantly enriched in glycerophospholipid metabolism(FDR-adjusted P=0.009,impact score=0.216).Conclusions Serum lipid profiles differed significantly between patients with IS and healthy controls.Thus,glycerophospholipid metabolism may be involved in the development of IS.These results provide initial evidence that lipid molecules and their related metabolites may serve as new biomarkers and potential therapeutic targets for IS.展开更多
Dyslipidemia,a complex disorder characterized by systemic lipid profile abnormalities,affects more than half of adults globally and constitutes a major modifiable risk factor for atherosclerotic cardiovascular disease...Dyslipidemia,a complex disorder characterized by systemic lipid profile abnormalities,affects more than half of adults globally and constitutes a major modifiable risk factor for atherosclerotic cardiovascular disease.Mounting evidence has established the gut microbiota(GM)as a pivotal metabolic modulator that is correlated with atherogenic lipid profiles through dietary biotransformation,immunometabolic regulation,and bioactive metabolite signaling.However,the host-microbe interactions that drive dyslipidemia pathogenesis involve complex gene-environment crosstalk spanning epigenetic modifications to circadian entrainment.Mechanistically,GM perturbations disrupt lipid homeostasis via lipopolysaccharide-triggered hepatic very low-density lipoprotein overproduction,short-chain fatty acid-G protein-coupled receptor 43/41-mediated adipocyte lipolysis,bile acid-farnesoid X receptor/Takeda G proteincoupled receptor 5 axis dysfunction altering cholesterol flux,microbialβ-oxidation intermediates impairing mitochondrial energetics,and host-microbiota noncoding RNA crosstalk regulating lipogenic genes.This comprehensive review systematically examines three critical dimensions,including bidirectional GMlipid axis interactions,molecular cascades bridging microbial ecology to metabolic dysfunction,and translational applications of GM modulation through precision probiotics,structure-specific prebiotics,and a metabolically optimized fecal microbiota transplantation protocol.Notwithstanding these advances,critical gaps persist in establishing causal microbial taxa-pathway relationships and optimal intervention timing.Future directions require longitudinal multi-omic studies,gnotobiotic models for mechanistic validation,and machine learning-driven personalized microbiota profiling.This synthesis provides a framework for developing microbiotacentric strategies targeting dyslipidemia pathophysiology,with implications for precision dyslipidemia management and next-generation cardiovascular disease prevention.展开更多
Background In recent years,the incidence of coronary heart disease(CHD)has continued to rise,and its comorbidity with hyperlipidemia significantly increases the mortality risk in patients.Statin monotherapy faces limi...Background In recent years,the incidence of coronary heart disease(CHD)has continued to rise,and its comorbidity with hyperlipidemia significantly increases the mortality risk in patients.Statin monotherapy faces limitations in efficacy for some patients and raises potential safety concerns.Ezetimibe,as a novel lipid-modulating agent,exhibits potential advantages in the treatment of hyperlipidemia.Based on this,the present study investigated the therapeutic efficacy of ezetimibe in CHD patients with hyperlipidemia,as well as its effects on lipid metabolism and the amelioration of atherosclerosis.Methods In this study,150 clinical cases with CHD and hyperlipidemia admitted in our hospital from July 2022 to July 2024 were collected for retrospective analysis.According to different treatment methods,they were randomly divided into the Atorvastatin group(control group,n=75)and the Atorvastatin+Ezetimibe group(experimental group,n=75).Control group received atorvastatin monotherapy,while experimental group were administered additional ezetimibe as an adjunct to the atorvastatin-based treatment regimen.The clinical efficacy of the two treatment groups was analyzed,including cardiac function-related parameters such as the cardiac index(CI),cardiac output(CO),left ventricular ejection fraction(LVEF)and left ventricular end-diastolic diameter(LVEDD)before and after treatment.The observed indicators encompassed coronary angiography findings,the Gensini score for assessing coronary stenosis severity,the inflammatory marker high-sensitivity C-reactive protein(hs-CRP),and lipid profile parameters including total cholesterol(TC),triglycerides(TG),high-density lipoprotein cholesterol(HDL-C),and low-density lipoprotein cholesterol(LDL-C).Additionally,the occurrence of adverse reactions during treatment was monitored.Results After treatment,the total effective rate in experimental group was significantly higher than that in control group,with a statistically significant difference(P<0.05).In the comparison of the baseline data,both groups showed marked improvements in CI,CO,LVEF,and HDL-C.However,at the same time points,the experimental group demonstrated significantly better results in these parameters than control group(P<0.05).Additionally,LVEDD,LDL-C,hs-CRP and Gensini scores were significantly reduced after treatment in both groups compared to pretreatment levels.Moreover,at identical time points,the aforementioned parameters in the experimental group demonstrated significantly greater reductions compared to control group(P<0.05).Regarding safety assessment,comparative analysis of adverse drug reaction(ADR)incidence rates between the two treatment groups revealed no statistically significant difference(P>0.05).Conclusions In patients with CHD complicated by hyperlipidemia,ezetimibe demonstrates significant therapeutic advantages.It effectively enhances treatment efficacy,regulates lipid profiles,improves cardiac function,and mitigates the progression of atherosclerosis.This regimen exhibits a favorable safety profile and holds substantial clinical value for both therapeutic processes and rehabilitation outcomes in this patient population.展开更多
As more and more studies have shown that lipid molecules play an important role in the whole biology,in-depth analysis of lipid structure has become particularly important in lipidomics.Mass spectrometry(MS),as the pr...As more and more studies have shown that lipid molecules play an important role in the whole biology,in-depth analysis of lipid structure has become particularly important in lipidomics.Mass spectrometry(MS),as the preferred tool for lipid analysis,has greatly promoted the development of this field.However,the existing MS methods still face many difficulties in the in-depth or even comprehensive analysis of lipid structure.In this review,we discuss recent advances in MS methods based on double bond-specific chemistries for the resolving of C=C location and geometry isomers of lipids.This progress has greatly advanced the lipidomics analysis to a deeper structural level and facilitated the development of structural lipid biology.展开更多
The International Symposium on Lipid Science and Health(ISLSH),which was organized annually by Oil Crops Research Institute of Chinese Academy of Agricultural Sciences(OCRI-CAAS)since 2016,has gained a strong reputati...The International Symposium on Lipid Science and Health(ISLSH),which was organized annually by Oil Crops Research Institute of Chinese Academy of Agricultural Sciences(OCRI-CAAS)since 2016,has gained a strong reputation and attracted hundreds of delegates from around the world for discussion of lipid research trends and advances every year,to promote research and academic exchanges in the fields of lipid science and health.The 5th International Symposium on lipid Science and Health was successfully held in Wuhan,China,from October 23rd to 25th,2020,to celebrate the 60th anniversary of OCRI-CAAS.The two-day symposium gathered wellknown experts specialized in lipid science to share the current state of lipid research with emphasis on aspects covering:(1)lipid profiling and characterization,(2)lipid preparation and modification,(3)lipid improvement and regulation,and(4)lipid nutrition and health.The symposium was conducted by a combination of on-site and network meeting.More than 250 distinguished delegates from academia and industry participated in the on-site multidisciplinary meeting,and thousands of scholars attended the virtual event.This paper is as a record of the symposium proceedings and a brief summary of the advances and trends in 4 aspects of lipid science and health.展开更多
Lipids serve as fundamental constituents of cell membranes and organelles.Recent studies have highlighted the significance of lipids as biomarkers in the diagnosis of breast cancer.Although liquid chromatography coupl...Lipids serve as fundamental constituents of cell membranes and organelles.Recent studies have highlighted the significance of lipids as biomarkers in the diagnosis of breast cancer.Although liquid chromatography coupled with tandem mass spectrometry(LC-MS/MS)is widely employed for lipid analysis in complex samples,it suffers from limitations such as complexity and time-consuming procedures.In this study,we have developed dopamine-modified TiO_(2)nanoparticles(TiO_(2)-DA)and applied the materials to assist the analysis of lipids by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry(MALDI-TOF MS).The TiO_(2)-DA can provide large specific surface area and acidic environment,well suited for lipid analysis.The method was initially validated using standard lipid molecules.Good sensitivity,reproducibility and quantification performance was observed.Then,the method was applied to the analysis of 90 serum samples from 30 patients with breast cancer,30 patients with benign breast disease and 30 healthy controls.Five lipid molecules were identified as potential biomarkers for breast cancer.We constructed a classification model based on the MALDI-TOF MS signal of the 5 lipid molecules,and achieved high sensitivity,specificity and accuracy for the differentiation of breast cancer from benign breast disease and healthy control.We further collected another 60 serum samples from 20 healthy controls,20 patients with benign breast disease and 20 patients with breast cancer for MALDITOF MS analysis to verify the accuracy of the classification model.This advancement holds great promise for the development of diagnostic models for other lipid metabolism-related diseases.展开更多
基金supported by the National Natural Science Foundation of China,No.82201568(to QQ)Capital’s Funds for Health Improvement and Research,No.2024-2-1031(to QQ)Beijing Nova Program,No.20240484566(to QQ).
文摘Synapses are key structures involved in transmitting information in the nervous system,and their functions rely on the regulation of various lipids.Lipids play important roles in synapse formation,neurotransmitter release,and signal transmission,and dysregulation of lipid metabolism is closely associated with various neurodegenerative diseases.The complex roles of lipids in synaptic function and neurological diseases have recently garnered increasing attention,but their specific mechanisms remain to be fully understood.This review aims to explore how lipids regulate synaptic activity in the central nervous system,focusing on their roles in synapse formation,neurotransmitter release,and signal transmission.Additionally,it discusses the mechanisms by which glial cells modulate synaptic function through lipid regulation.This review shows that within the central nervous system,lipids are essential components of the cell membrane bilayer,playing critical roles in synaptic structure and function.They regulate presynaptic vesicular trafficking,postsynaptic signaling pathways,and glial-neuronal interactions.Cholesterol maintains membrane fluidity and promotes the formation of lipid rafts.Glycerophospholipids contribute to the structural integrity of synaptic membranes and are involved in the release of synaptic vesicles.Sphingolipids interact with synaptic receptors through various mechanisms to regulate their activity and are also involved in cellular processes such as inflammation and apoptosis.Fatty acids are vital for energy metabolism and the synthesis of signaling molecules.Abnormalities in lipid metabolism may lead to impairments in synaptic function,affecting information transmission between neurons and the overall health of the nervous system.Therapeutic strategies targeting lipid metabolism,particularly through cholesterol modulation,show promise for treating these conditions.In neurodegenerative diseases such as Alzheimer’s disease,Parkinson disease,and amyotrophic lateral sclerosis,dysregulation of lipid metabolism is closely linked to synaptic dysfunction.Therefore,lipids are not only key molecules in neural regeneration and synaptic repair but may also contribute to neurodegenerative pathology when metabolic dysregulation occurs.Further research is needed to elucidate the specific mechanisms linking lipid metabolism to synaptic dysfunction and to develop targeted lipid therapies for neurological diseases.
文摘A key pathological feature of Parkinson’s disease(PD)is that lysosomes are overwhelmed with cellular materials that need to be degraded and cleared.While the build-up of protein is characteristic of neurodegenerative diseases such as PD and Alzheimer’s disease(AD)and is thought to reflect lysosome dysfunction,lipid accumulation may also contribute to and be indicative of severe lysosomal dysfunction.Much is known about the detrimental effects of glucosylceramide accumulation in PD lysosomes.
基金supported by the Sanming Project of Medicine in Shenzhen[SZZYSM202206001]National Natural Science Foundation of China[82004320 and 82374383]+3 种基金Natural Science Foundation of Guangdong Province of China[2022A1515011710 and 2022A1515010679]Shenzhen Science and Technology Innovation Committee[JCYJ20220530141407017 and JCYJ20240813153619026]2024 High-quality Development Research Project of Shenzhen Bao’an Public Hospital[YNXM2024078]and Shenzhen Bao’an Chinese Medicine Hospital Research Program[BAZYY20220702].
文摘Background:“Qi deficiency”(a pathological state where the body’s vital energy(Qi)is insufficient or weakened,impairing physiological functions and diminishing the body’s ability to perform daily activities,defend against illness,and maintain homeostasis)syndrome is considered a critical syndrome in traditional Chinese medicine(TCM)and is associated with poor prognosis in heart failure(HF).This study investigates the clinical,metabolic,and transcriptomic differences between heart failure patients with and without Qi deficiency syndrome.Methods:56 heart failure patients were evaluated using a Qi deficiency syndrome scale and divided into Qi deficiency syndrome(QD)and non-Qi deficiency(non-QD)groups based on the median score.Clinical characteristics,including baseline N-terminal pro-B-type natriuretic peptide(NT-proBNP),left ventricular ejection fraction(LVEF),total diuretic use during hospitalization,and 90-day rehospitalization rates,were compared between the groups.Differentially expressed genes(DEGs)and differential metabolites were identified,followed by enrichment analyses and validation using qPCR and Western blot in AC16 cardiomyocytes.Results:QD patients exhibited significantly higher NT-proBNP levels,lower LVEF,and increased 90-day rehospitalization rates.Metabolomic profiling revealed lipid metabolism disruptions,notably in linoleic acid and phospholipid pathways.Transcriptomic analysis highlighted 17 DEGs,including CISD2,a critical mitochondrial regulator,which was downregulated in QD patients.Correlation analysis identified significant associations between DEGs(e.g.,CISD2,BPGM)and lipid metabolites such as PC(16:0/P-16:0).Functional knockdown of CISD2 in AC16 cells led to upregulation of lipid oxidation enzymes ALOX15 and CYP1A2,linking CISD2 dysfunction to lipid metabolic dysregulation.Conclusion:Qi deficiency is associated with more severe heart failure symptoms,worse prognosis,and distinct metabolic and transcriptomic profiles,particularly in lipid metabolism.CISD2 emerges as a potential therapeutic target,offering new avenues for integrating molecular insights with TCM approaches to optimize HF management.
基金funded by Basic Research Program of Shanghai,No.20JC1412200(to JW)the National Key Research and Development Program of China,No.2020YFA0113000(to RCZ)。
文摘Lipid droplets serve as primary storage organelles for neutral lipids in neurons,glial cells,and other cells in the nervous system.Lipid droplet formation begins with the synthesis of neutral lipids in the endoplasmic reticulum.Previously,lipid droplets were recognized for their role in maintaining lipid metabolism and energy homeostasis;however,recent research has shown that lipid droplets are highly adaptive organelles with diverse functions in the nervous system.In addition to their role in regulating cell metabolism,lipid droplets play a protective role in various cellular stress responses.Furthermore,lipid droplets exhibit specific functions in neurons and glial cells.Dysregulation of lipid droplet formation leads to cellular dysfunction,metabolic abnormalities,and nervous system diseases.This review aims to provide an overview of the role of lipid droplets in the nervous system,covering topics such as biogenesis,cellular specificity,and functions.Additionally,it will explore the association between lipid droplets and neurodegenerative disorders.Understanding the involvement of lipid droplets in cell metabolic homeostasis related to the nervous system is crucial to determine the underlying causes and in exploring potential therapeutic approaches for these diseases.
文摘When mammals are exposed to cold,their metabolism undergoes substantial changes.The liver plays a central role in maintaining energy homeostasis by shifting from glucose metabolism to lipid catabolism.A recent study by Davidson et al.^([1]),published in Cell Metabolism,highlights a novel mechanism involving lysosomal lipid remodeling during cold adaptation.Specifically,the study reveals that cold exposure elevates hepatic levels of Bis(Monoacylglycerol)Phosphate(BMP)lipids,which are regulated by Transcription Factor EB(TFEB)and Phospholipase A2 group XV(PLA2G15).
基金Supported by the Guangxi Science and Technology Major Projects,No.AA23073012the National Natural Science Foundation of China,No.32360035 and No.32060018.
文摘BACKGROUND Probiotic Acetobacter pasteurianus is used to treat diabetes,but its specific hypoglycemic substances and mechanisms remain unclear.AIM To investigate the components for lipid metabolism of A.pasteurianus and its hypoglycemic effects,providing a basis for its broader application.METHODS The lipid metabolism of A.pasteurianus under different growth conditions was analyzed using lipidomics.Neutral lipid staining in A.pasteurianus cells and the formation of lipid droplet-like structures were observed using a confocal laser scanning microscope.The neutral lipid components were also analyzed using thin layer chromato-graphy.A diabetic mouse model was established to evaluate the hypoglycemic effects of the main lipid components of A.pasteurianus and their role in repairing tissues such as the pancreas.RESULTS After comparing the effects of three culture media,namely,brain heart infusion(BHI)medium with 2%glucose,chromium-rich and zinc-rich medium,and mineral salt medium,A.pasteurianus grew well in BHI containing 2%glucose and produced the most lipids.A total of 583 lipid metabolic products was identified,with higher levels of coenzyme Q9(CoQ9),oleic acid(OA),and wax ester,but no triacylglycerol was observed.It was found that the components that affected lipid metabolism in A.pasteurianus were mainly CoQ9 and OA.They exhibited hypoglycemic effects comparable to metformin in diabetic mice,repaired damaged pancreatic tissues,and did not cause damage to the liver and spleen.CONCLUSION Under high-nutrient growth conditions,A.pasteurianus contains abundant lipid components,such as CoQ9 and OA,with good hypoglycemic effects.
文摘BACKGROUND Dyslipidemia was strongly linked to stroke,however the relationship between dyslipidemia and its components and ischemic stroke remained unexplained.AIM To investigate the link between longitudinal changes in lipid profiles and dyslipidemia and ischemic stroke in a hypertensive population.METHODS Between 2013 and 2014,6094 hypertension individuals were included in this,and ischemic stroke cases were documented to the end of 2018.Longitudinal changes of lipid were stratified into four groups:(1)Normal was transformed into normal group;(2)Abnormal was transformed into normal group;(3)Normal was transformed into abnormal group;and(4)Abnormal was transformed into abnormal group.To examine the link between longitudinal changes in dyslipidemia along with its components and the risk of ischemic stroke,we utilized multivariate Cox proportional hazards models with hazard ratio(HR)and 95%CI.RESULTS The average age of the participants was 62.32 years±13.00 years,with 329 women making up 54.0%of the sample.Over the course of a mean follow-up of 4.8 years,143 ischemic strokes happened.When normal was transformed into normal group was used as a reference,after full adjustments,the HR for dyslipidemia and ischemic stroke among abnormal was transformed into normal group,normal was transformed into abnormal group and abnormal was transformed into abnormal Wei CC et al.Dyslipidemia changed and ischemic stroke WJCC https://www.wjgnet.com 2 February 6,2025 Volume 13 Issue 4 group were 1.089(95%CI:0.598-1.982;P=0.779),2.369(95%CI:1.424-3.941;P<0.001)and 1.448(95%CI:1.002-2.298;P=0.047)(P for trend was 0.233),respectively.CONCLUSION In individuals with hypertension,longitudinal shifts from normal to abnormal in dyslipidemia-particularly in total and low-density lipoprotein cholesterol-were significantly associated with the risk of ischemic stroke.
基金financially supported by the National Natural Science Foundation of China(No.T2293753)the National Key R&D Program of China(No.2021YFA1201200)the“Pioneer”and“Leading Goose”R&D Program of Zhejiang(No.022C03022)。
文摘mRNA is a highly promising approach for disease prevention,yet its further application is currently limited by the low efficiency of delivery.Lipid nanoparticles(LNPs)are the mainstream delivery vehicles at present,and ionizable lipids,as a key component,have a particularly significant impact on delivery efficiency.To improve the efficiency of delivery,a library of ionizable lipids with tetra-branched hydrophobic tails was designed and synthesized by the Michael addition reaction.From this library,the lipid 10A was selected for the highest delivery efficiency.Further formulation screening yielded LNPs with excellent performance,which showed good efficacy in tumor prevention experiments.At the same time,the structure-activity relationship between the ionizable lipid structure and the delivery efficiency was elucidated.It was that the tetra-branched hydrophobic tails,as compared with the di-branched hydrophobic tails enhanced the stability of LNPs,provided uniformity of particle size and improved the efficiency of endocytosis and lysosomal escape,resulting in higher delivery efficiency.Meanwhile,tetra-branched lipids with hydroxyl groups in the head group performed even better.This research provides a theoretical basis and foundation for guiding the development of the next generation of ionizable lipids,and the developed 10A LNP also shows broad prospects for clinical translation.
基金the financial support from the National Natural Science Foundation of China(Nos.82060626,22004137,22164022,22174147,22074151,22374153,22174148)Excellent Youth scientific and technological talents of Guizhou Province(No.Qiankehe platform talents[2021]5638)+3 种基金Talents of Guizhou Science and Technology Cooperation Platform(No.[2020]4104)Science and Technology Innovation Team of Higher Education of Guizhou Provincial Education Department(No.Qianjiaoji[2023]073)Future Science and Technology Elite Talent Cultivation Project of Zunyi Medical University(No.ZYSE-2021-01)Zunyi Science and Technology Plan Project(No.Zunshi Keren Platform[2023]2)。
文摘Ferroptosis is a new regulated cell death process executed by lipid peroxidation(LPO)of polyunsaturated fatty acids.Lipid droplets(LDs),as an important organelle for lipid storage and metabolism,are probably a major site of LPO and play critical roles in the regulation of ferroptosis.However,the detailed study on LPO in LDs has not been carried out because of the lack of LD-targeting tools for the in situ monitoring of LPO.Herein,the first LD-targeting LPO fluorescence probe(LD-LPO)has been developed.LD-LPO exhibits a rapid and selective fluorescence enhancement at 518 nm,which is unaffected by highly destructive reactive oxygen species(e.g.,hydroxyl radical)and environmental factor changes(e.g.,polarity and viscosity).LD-LPO is capable of targeting LDs and visualizing LPO within LDs in situ during erastin-or(1S,3R)-RSL3(RSL3)-induced ferroptosis.Moreover,LD-LPO has also been used to image LPO in the ferroptosis-associated non-alcoholic fatty liver disease(NAFLD),and to evaluate the medicine treatment of NAFLD with saroglitazar,demonstrating its utility for monitoring LPO levels in biosystems.The favorable analytical and imaging performance of LD-LPO may allow its application in more ferroptosisassociated physiological and pathological processes.
基金Supported by Joint TCM Science&Technology Projects of National Demonstration Zones for Comprehensive TCM Reform,No.GZYKJS-ZJ-2025-044Ningbo Top Medical and Health Research Program,No.2023020612.
文摘BACKGROUND Metabolic dysfunction-associated steatotic liver disease(MASLD)has emerged as a prominent and pervasive global health challenge.Bicuculline(BIC),which is a key active component of the anti-MASLD prescription"Eight Zhes Decoction",has been preliminarily shown by our research team to have significant potential in treating MASLD.AIM To determine BIC's efficacy in treating MASLD by regulating lipid metabolism and suppressing hepatic inflammation via nuclear factor-kappa B(NF-κB)pathway,identifying it as a therapeutic candidate.METHODS This study explored the potential of BIC in preventing and treating MASLD using zebrafish,cellular(HepG2 and AML12),and mouse models.RESULTS Our results indicate that BIC significantly reduces lipid accumulation and inflammation both in vivo and in vitro.Transcriptomic analysis suggested that the anti-MASLD effects of BIC are linked to the inhibition of the NF-κB pathway,which plays a critical role in mitigating inflammation and lipid deposition.CONCLUSION This study is the first to demonstrate that BIC specifically alleviates lipid accumulation and hepatic steatosis in MASLD models via the NF-κB signaling pathway.Overall,BIC has emerged as a promising candidate for treating MASLD.
基金supported by the National Natural Science Foundation of China(No.T2422004,22278059,22174009,and 22078047)Fundamental Research Funds for the Central Universities(No.DUT22LAB601,DUT22LAB608,and DUT24ZD119)the Outstanding Youth Foundation of Liaoning(No.2022-YQ-08).
文摘Lipid peroxidation(LPO)in foam cells is crucial for regulating atherosclerosis progression.It correlates with lipid uptake and the state of lipid droplets.In this study,we report a lipid droplet-targeted fluorescent LPO probe,Ld-LPO.It selectively responds to LPO,resulting in a significant fluorescence shift from 590 to 525 nm,enabling a ratiometric imaging of LPO in lipid droplets.Ld-LPO traces lipid droplets in foam cells,revealing a correlation between LPO and lysosomal engulfment.We found that lipid droplets engulfed by lysosomes exhibit higher LPO,attributed to low-density lipoprotein accumulation in lysosomes.Furthermore,Ld-LPO is compatible with dual-color flow cytometry,facilitating highthroughput analysis of LPO in foam cells.
文摘BACKGROUND The global rise in overweight and obesity has reached alarming levels,substantially increasing the risk of metabolic disorders such as dyslipidemia.We outlined the evolving trends in baseline blood lipid levels among patients experiencing overweight or obesity,as observed in placebo-controlled randomized trials,to address the unmet clinical requirements.AIM To assess long-term trends in lipid profiles in overweight or obese populations and their association with clinical and treatment factors.METHODS EMBASE,PubMed,Cochrane Library,and Web of Science databases were searched up to October 9,2024.Randomized placebo-controlled trials of participants with overweight or obesity,with reports of baseline lipid levels,were included.The main outcome was a correlation between pooled baseline levels of triglycerides(TG),total cholesterol(TC),high-density lipoprotein cholesterol(HDL-C),and low-density lipoprotein cholesterol(LDL-C)with study year.Subgroup analysis was conducted based on characteristics of the populations and intervention types.RESULTS A comprehensive meta-analysis encompassing 866 studies across nearly 60 countries and regions worldwide,involving 3300 participants,revealed significant temporal trends in baseline lipid profiles.The analysis revealed a significant decline in TG(Rs=-0.704,P<0.001,I^(2)=98.6%),TC(Rs=-0.884,P<0.001,I^(2)=99.6%),and LDL-C(Rs=-0.808,P<0.001,I^(2)=96.8%)levels.In contrast,HDL-C(Rs=0.336,P=0.041,I^(2)=99.2%)levels exhibited a progressive increase over the study period.Subgroup analyses revealed that sex,body mass index,blood pressure,diabetes status,and type of intervention influenced the observed trends,especially with patients receiving pharmacological therapies demonstrating more pronounced improvements(TG:Rs=-0.449,P_(adj)=0.011;I^(2)=98.9%;TC:Rs=-0.650,P_(adj)=0.001;I^(2)=99.4%;HDL-C:Rs=0.650,P_(adj)=0.002;I^(2)=98.6%;LDL-C:Rs=-0.417,P_(adj)=0.031;I²=98.0%).CONCLUSION Despite rising obesity rates,lipid control has improved over three decades among individuals with overweight or obesity,reflecting the positive impact of public health efforts and effective dyslipidemia treatment strategies.
基金funded by the National Natural Science Foundation of China(31901624)the Key-Area Research and Development Program of Guangdong Province(2018B020206001)+2 种基金Guangdong Province Zhujiang Talent Program(2019ZT08H476)Shenzhen Science and Technology Program(KQTD20180412181334790)the Innovation Team Project of Universities in Guangdong Province(2020KCXTD023)。
文摘Fucoxanthin,a kind of exclusively algae-derived carotenoids,could reduce lipid content and regulate gut microbiota composition in obese mice,showing potential in preventing hyperlipidemia.This study aimed to illustrate fucoxanthin efficacy in modulating lipid metabolism in serum and liver of high-fat-induced hyperlipidemia mice,as well as investigate the underlying association with gut microbiota changes.Results showed that fucoxanthin significantly reduced body weight gain and body white fat of the mice.In the serum,total triglycerides(TG),total cholesterol(TC)contents were significantly decreased and high-densitylipoprotein cholesterol levels was significantly upregulated.Moreover,fucoxanthin remarkedly prevented lipid accumulation in the liver.Especially,metabolomics results showed that lipids and lipid-like molecules were significantly downregulated compared with the control,indicating the advance of hepatic lipid metabolism.Bile acids profile in the liver was also greatly changed by fucoxanthin.Meanwhile,fucoxanthin remodeled gut microbiota composition and promoted the relative abundance of Desulfovibrio,Blautia and Clostridia genera.Finally,correlation analysis revealed that these gut microbiota changes were closely related with hepatic metabolites/metabolism and serum lipids.Altogether,this study showed great potential of fucoxanthin in improving serum lipids profile,hepatic lipids and bile acids metabolism of hyperlipidemia mice,which was associated with gut microbiota alteration.
基金financially supported by the National Key Research and Development Program of China(2022YFD1301105)the earmarked fund for CARS(CARS-36)。
文摘Background The objective of this study was to evaluate the effects of dietary fatty acids(FA)saturation and lysophospholipids supplementation on growth,meat quality,oxidative stability,FA profiles,and lipid metabolism of finishing beef bulls.Thirty-two Angus bulls(initial body weight:623±22.6 kg;21±0.5 months of age)were used.The experiment was a completely randomized block design with a 2×2 factorial arrangement of treatments:2 diets with FA of different degree of unsaturation[high saturated FA diet(HSFA)vs.high unsaturated FA diet(HUFA)]combined with(0.075%,dry matter basis)and without lysophospholipids supplementation.The bulls were fed a high-concentrate diet(forage to concentrate,15:85)for 104 d including a 14-d adaptation period and a 90-d data and sample collection period.Results No interactions were observed between dietary FA and lysophospholipids supplementation for growth and meat quality parameters.A greater dietary ratio of unsaturated FA(UFA)to saturated FA(SFA)from 1:2 to 1:1 led to lower DM intake and backfat thickness,but did not affect growth performance and other carcass traits.Compared with HSFA,bulls fed HUFA had greater shear force in Longissimus thoracis(LT)muscle,but had lower intramuscular fat(IMF)content and SOD content in LT muscle.Compared with HUFA,feeding the HSFA diet up-regulated expression of ACC,FAS,PPARγ,and SCD1,but down-regulated expression of CPT1B.Compared with feeding HSFA,the HUFA diet led to greater concentrations of c9-C18:1 and other monounsaturated FA in LT muscle.Feeding HUFA also led to lower plasma concentrations of cholesterol,but there were no interactions between FA and lysophospholipids detected.Feeding lysophospholipids improved growth and feed conversion ratio and altered meat quality by increasing muscle pH_(24h),redness values(24 h),IMF content,and concentrations of C18:3,C20:5 and total polyunsaturated fatty acids.Furthermore,lysophospholipids supplementation led to lower malondialdehyde content and up-regulated the expression of ACC,FAS,and LPL in LT muscle.Conclusions Results indicated that supplementing a high-concentrate diet with lysophospholipids to beef bulls can enhance growth rate,feed efficiency,meat quality,and beneficial FA.Increasing the dietary ratio of UFA to SFA reduced DM intake and backfat thickness without compromising growth,suggesting potential improvements in feed efficiency.
基金supported by the National Natural Science Foundation of China (Nos. 81903384and 82173596)Suzhou Municipal Science and Technology Bureau (No. SKY2023041 and SKY2023180)+3 种基金the Inner Mongolia Autonomous Region Science and Technology Program (Nos.2022YFSH0054 and 2023GLLH0387)the Clinical Research Center of Neurological Disease of The Second Affiliated Hospital of Soochow University(ND2023B06)the Shaanxi Provincial Natural Science Basic Research Program (2025JC-YBMS-1020)Undergraduate Extracurricular Academic Research Funding of Soochow University (KY2023442B)
文摘Objective Lipid oxidation is involved in the pathogenesis of atherosclerosis and may be contribute to the development of Ischemic stroke(IS).However,the lipid profiles associated with IS have been poorly studied.We conducted a pilot study to identify potential IS-related lipid molecules and pathways using lipidomic profiling.Methods Serum lipidomic profiling was performed using LC-MS in 20 patients with IS and 20 age-and sex-matched healthy controls.Univariate and multivariate analyses were simultaneously performed to identify the differential lipids.Multiple testing was controlled for using a false discovery rate(FDR)approach.Enrichment analysis was performed using MetaboAnalyst software.Results Based on the 294 lipids assayed,principal component analysis(PCA)and orthogonal partial least squares discriminant analysis(OPLS-DA)models were used to distinguish patients with IS from healthy controls.Fifty-six differential lipids were identified with an FDR-adjusted P less than 0.05 and variable influences in projection(VIP)greater than 1.0.These lipids were significantly enriched in glycerophospholipid metabolism(FDR-adjusted P=0.009,impact score=0.216).Conclusions Serum lipid profiles differed significantly between patients with IS and healthy controls.Thus,glycerophospholipid metabolism may be involved in the development of IS.These results provide initial evidence that lipid molecules and their related metabolites may serve as new biomarkers and potential therapeutic targets for IS.
文摘Background In recent years,the incidence of coronary heart disease(CHD)has continued to rise,and its comorbidity with hyperlipidemia significantly increases the mortality risk in patients.Statin monotherapy faces limitations in efficacy for some patients and raises potential safety concerns.Ezetimibe,as a novel lipid-modulating agent,exhibits potential advantages in the treatment of hyperlipidemia.Based on this,the present study investigated the therapeutic efficacy of ezetimibe in CHD patients with hyperlipidemia,as well as its effects on lipid metabolism and the amelioration of atherosclerosis.Methods In this study,150 clinical cases with CHD and hyperlipidemia admitted in our hospital from July 2022 to July 2024 were collected for retrospective analysis.According to different treatment methods,they were randomly divided into the Atorvastatin group(control group,n=75)and the Atorvastatin+Ezetimibe group(experimental group,n=75).Control group received atorvastatin monotherapy,while experimental group were administered additional ezetimibe as an adjunct to the atorvastatin-based treatment regimen.The clinical efficacy of the two treatment groups was analyzed,including cardiac function-related parameters such as the cardiac index(CI),cardiac output(CO),left ventricular ejection fraction(LVEF)and left ventricular end-diastolic diameter(LVEDD)before and after treatment.The observed indicators encompassed coronary angiography findings,the Gensini score for assessing coronary stenosis severity,the inflammatory marker high-sensitivity C-reactive protein(hs-CRP),and lipid profile parameters including total cholesterol(TC),triglycerides(TG),high-density lipoprotein cholesterol(HDL-C),and low-density lipoprotein cholesterol(LDL-C).Additionally,the occurrence of adverse reactions during treatment was monitored.Results After treatment,the total effective rate in experimental group was significantly higher than that in control group,with a statistically significant difference(P<0.05).In the comparison of the baseline data,both groups showed marked improvements in CI,CO,LVEF,and HDL-C.However,at the same time points,the experimental group demonstrated significantly better results in these parameters than control group(P<0.05).Additionally,LVEDD,LDL-C,hs-CRP and Gensini scores were significantly reduced after treatment in both groups compared to pretreatment levels.Moreover,at identical time points,the aforementioned parameters in the experimental group demonstrated significantly greater reductions compared to control group(P<0.05).Regarding safety assessment,comparative analysis of adverse drug reaction(ADR)incidence rates between the two treatment groups revealed no statistically significant difference(P>0.05).Conclusions In patients with CHD complicated by hyperlipidemia,ezetimibe demonstrates significant therapeutic advantages.It effectively enhances treatment efficacy,regulates lipid profiles,improves cardiac function,and mitigates the progression of atherosclerosis.This regimen exhibits a favorable safety profile and holds substantial clinical value for both therapeutic processes and rehabilitation outcomes in this patient population.
基金financially supported by the National Natural Science Foundation of China(No.22074111)National Key Research and Development Program of China(No.2021YFC2700700)the Opening fund of Hubei Key Laboratory of Bioinorganic Chemistry&Materia Medica(No.BCMM202303)。
文摘As more and more studies have shown that lipid molecules play an important role in the whole biology,in-depth analysis of lipid structure has become particularly important in lipidomics.Mass spectrometry(MS),as the preferred tool for lipid analysis,has greatly promoted the development of this field.However,the existing MS methods still face many difficulties in the in-depth or even comprehensive analysis of lipid structure.In this review,we discuss recent advances in MS methods based on double bond-specific chemistries for the resolving of C=C location and geometry isomers of lipids.This progress has greatly advanced the lipidomics analysis to a deeper structural level and facilitated the development of structural lipid biology.
基金supported by the Agricultural Science and Technology Innovation Project of Chinese Academy of Agricultural Sciences(CAASASTIP-2016-OCRI).
文摘The International Symposium on Lipid Science and Health(ISLSH),which was organized annually by Oil Crops Research Institute of Chinese Academy of Agricultural Sciences(OCRI-CAAS)since 2016,has gained a strong reputation and attracted hundreds of delegates from around the world for discussion of lipid research trends and advances every year,to promote research and academic exchanges in the fields of lipid science and health.The 5th International Symposium on lipid Science and Health was successfully held in Wuhan,China,from October 23rd to 25th,2020,to celebrate the 60th anniversary of OCRI-CAAS.The two-day symposium gathered wellknown experts specialized in lipid science to share the current state of lipid research with emphasis on aspects covering:(1)lipid profiling and characterization,(2)lipid preparation and modification,(3)lipid improvement and regulation,and(4)lipid nutrition and health.The symposium was conducted by a combination of on-site and network meeting.More than 250 distinguished delegates from academia and industry participated in the on-site multidisciplinary meeting,and thousands of scholars attended the virtual event.This paper is as a record of the symposium proceedings and a brief summary of the advances and trends in 4 aspects of lipid science and health.
基金supported by National Natural Science Foundation of China(NSFC,Nos.22074022,22374031)the Ministry of Science and Technology of China,National Key R&D Program of China(No.2022YFC2704300).
文摘Lipids serve as fundamental constituents of cell membranes and organelles.Recent studies have highlighted the significance of lipids as biomarkers in the diagnosis of breast cancer.Although liquid chromatography coupled with tandem mass spectrometry(LC-MS/MS)is widely employed for lipid analysis in complex samples,it suffers from limitations such as complexity and time-consuming procedures.In this study,we have developed dopamine-modified TiO_(2)nanoparticles(TiO_(2)-DA)and applied the materials to assist the analysis of lipids by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry(MALDI-TOF MS).The TiO_(2)-DA can provide large specific surface area and acidic environment,well suited for lipid analysis.The method was initially validated using standard lipid molecules.Good sensitivity,reproducibility and quantification performance was observed.Then,the method was applied to the analysis of 90 serum samples from 30 patients with breast cancer,30 patients with benign breast disease and 30 healthy controls.Five lipid molecules were identified as potential biomarkers for breast cancer.We constructed a classification model based on the MALDI-TOF MS signal of the 5 lipid molecules,and achieved high sensitivity,specificity and accuracy for the differentiation of breast cancer from benign breast disease and healthy control.We further collected another 60 serum samples from 20 healthy controls,20 patients with benign breast disease and 20 patients with breast cancer for MALDITOF MS analysis to verify the accuracy of the classification model.This advancement holds great promise for the development of diagnostic models for other lipid metabolism-related diseases.
