Objective Previous studies link lower body mass index(BMI)with increased obsessive-compulsive disorder(OCD)risk,yet other body mass indicators may be more etioloically relevant.We dissected the causal association betw...Objective Previous studies link lower body mass index(BMI)with increased obsessive-compulsive disorder(OCD)risk,yet other body mass indicators may be more etioloically relevant.We dissected the causal association between body fat mass(FM)and OCD.Methods Summary statistics from genome-wide association studies of European ancestry were utilized to conduct two-sample Mendelian randomization analysis.Heterogeneity,horizontal pleiotropy,and sensitivity analyses were performed to assess the robustness.Results The inverse variance weighting method demonstrated that a genetically predicted decrease in FM was causally associated with an increased OCD risk[odds ratio(OR)=0.680,95%confidence interval(CI):0.528–0.875,P=0.003].Similar estimates were obtained using the weighted median approach(OR=0.633,95%CI:0.438–0.915,P=0.015).Each standard deviation increases in genetically predicted body fat percentage corresponded to a reduced OCD risk(OR=0.638,95%CI:0.455–0.896,P=0.009).The sensitivity analysis confirmed the robustness of these findings with no outlier instrument variables identified.Conclusion The negative causal association between FM and the risk of OCD suggests that the prevention or treatment of mental disorders should include not only the control of BMI but also fat distribution and body composition.展开更多
Overweight and obesity has been a major public health problem globally.It was estimated that more than 2.1 billion adults were affected by overweight or obese in 2021 worldwide,about one fifth of whom lived in China^(...Overweight and obesity has been a major public health problem globally.It was estimated that more than 2.1 billion adults were affected by overweight or obese in 2021 worldwide,about one fifth of whom lived in China^([1]).By 2050,the country is forecast to remain the one with the largest population of overweight and obese globally^([1]),if no effective strategies were applied on overweight/obesity control.展开更多
Objective The rising prevalence of childhood obesity is closely associated with suboptimal dietary patterns.To address this public health concern,we conducted a comprehensive study to examine the association between c...Objective The rising prevalence of childhood obesity is closely associated with suboptimal dietary patterns.To address this public health concern,we conducted a comprehensive study to examine the association between coarse cereals consumption and body fat percentage(BFP)in Chinese children and adolescents.Methods The study included 48,305 children aged 6–17 years from 28 districts/counties in 14 provinces across seven regions of China(24,152 girls and 24,153 boys).BFP was examined using bioelectrical impedance analysis in the early morning.Coarse cereals consumption was assessed using a Food Frequency Questionnaire and categorized into three groups:0 g/1,000 kcal per day,0–10 g/1,000kcal per day,and>10 g/1,000 kcal per day(daily consumption of coarse cereals×1,000/total energy consumption).Quantile regression model was used to analyze the association between coarse cereals and BFP,adjusting for potential confounders such as age,pubertal development stage,urban/rural and regional factors,total daily dietary energy consumption,sedentary time,moderate-to-high physical activity,household income,parental education,and consumption of other foods.Results Boys aged 6–10,11–14,and 15–17 years had median daily coarse cereals consumptions of6.6 g,7.1 g,and 5.7 g,with BFP of 19.6%,19.5%,and 17.5%(all P<0.05).Girls in the same age groups showed consumption of 7.1 g,8.4 g,and 6.7 g,with BFP of 20.3%,26.4%,and 31.0%(all P<0.05).The quantile regression results for boys showed that daily consumption of coarse cereals was significantly correlated with their BFP in the 0.15,0.25,and 0.50 quartiles,with regression coefficients of-0.257,-0.221,and-0.330,respectively,after adjusting for potential confounders(P<0.05).For girls,there was a significant correlation with PBF at the 0.05,0.15,0.25,0.50,0.75,and 0.85 quartiles,with regression coefficients of-0.258,-0.366,-0.372,-0.431,-0.472,and-0.503(P<0.05 for all).Conclusions Coarse cereals consumption among Chinese children and adolescents remains relatively low.Higher consumption was inversely associated with BFP in children aged 6–17 years.Future interventional studies should assess how increased coarse cereals consumption prevents childhood obesity.展开更多
The neuroinflammatory response mediated by microglial activation plays an important role in the secondary nerve injury of traumatic brain injury.The post-transcriptional modification of N^(6)-methyladenosine is ubiqui...The neuroinflammatory response mediated by microglial activation plays an important role in the secondary nerve injury of traumatic brain injury.The post-transcriptional modification of N^(6)-methyladenosine is ubiquitous in the immune response of the central nervous system.The fat mass and obesity-related protein catalyzes the demethylation of N^(6)-methyladenosine modifications on mRNA and is widely expressed in various tissues,participating in the regulation of multiple diseases’biological processes.However,the role of fat mass and obesity in microglial activation and the subsequent neuroinflammatory response after traumatic brain injury is unclear.In this study,we found that the expression of fat mass and obesity was significantly down-regulated in both lipopolysaccharide-treated BV2 cells and a traumatic brain injury mouse model.After fat mass and obesity interference,BV2 cells exhibited a pro-inflammatory phenotype as shown by the increased proportion of CD11b^(+)/CD86^(+)cells and the secretion of pro-inflammatory cytokines.Fat mass and obesity-mediated N^(6)-methyladenosine demethylation accelerated the degradation of ADAM17 mRNA,while silencing of fat mass and obesity enhanced the stability of ADAM17 mRNA.Therefore,down-regulation of fat mass and obesity expression leads to the abnormally high expression of ADAM17 in microglia.These results indicate that the activation of microglia and neuroinflammatory response regulated by fat mass and obesity-related N^(6)-methyladenosine modification plays an important role in the pro-inflammatory process of secondary injury following traumatic brain injury.展开更多
Intrapancreatic fat deposition(IPFD)has garnered increasing attention in recent years.The prevalence of IPFD is relatively high and associated with factors such as obesity,age,and sex.However,the pathophysiological me...Intrapancreatic fat deposition(IPFD)has garnered increasing attention in recent years.The prevalence of IPFD is relatively high and associated with factors such as obesity,age,and sex.However,the pathophysiological mechanisms underlying IPFD remain unclear,with several potential contributing factors,including oxida-tive stress,alterations in the gut microbiota,and hormonal imbalances.IPFD was found to be highly correlated with the occurrence and prognosis of exocrine pan-creatic diseases.Although imaging techniques remain the primary diagnostic approach for IPFD,an expanding array of biomarkers and clinical scoring systems have been identified for screening purposes.Currently,effective treatments for IPFD are not available;however,existing medications,such as glucagon-like peptide-1 receptor agonists,and new therapeutic approaches explored in animal models have shown considerable potential for managing this disease.This paper reviews the pathogenesis of IPFD,its association with exocrine pancreatic disea-ses,and recent advancements in its diagnosis and treatment,emphasizing the significant clinical relevance of IPFD.展开更多
Intramuscular fat(IMF)is an important economic trait for pork quality,affecting meat flavour,juiciness,and tenderness.Hence,the improvement of IMF content is one of the hotspots of animal science to provide better mea...Intramuscular fat(IMF)is an important economic trait for pork quality,affecting meat flavour,juiciness,and tenderness.Hence,the improvement of IMF content is one of the hotspots of animal science to provide better meat product.Here,we found that most IMF-related genes are enriched in lipid metabolism processes,including fatty acid transport and uptake,fatty acid beta oxidation,lipid synthesis,lipid storage,and lipolysis.PPAR and AMPK signalling pathways are identified to be responsible for IMF deposition.Genetics and nongenetic factors(i.e.,diets,gut microbiota,age,sex and management)also positively or negatively regulate the IMF content in pigs.Taken together,this review deepens our understanding of how these factors affect pig IMF deposition and provides valuable information for moderately increasing IMF content.展开更多
BACKGROUND Nonalcoholic fatty liver disease(NAFLD)is the most common chronic liver disea-se.The accuracy of noninvasive biomarkers for detecting hepatic steatosis is still limited.AIM To assess the diagnostic performa...BACKGROUND Nonalcoholic fatty liver disease(NAFLD)is the most common chronic liver disea-se.The accuracy of noninvasive biomarkers for detecting hepatic steatosis is still limited.AIM To assess the diagnostic performance of noninvasive steatosis biomarkers in diag-nosing NAFLD using magnetic resonance imaging proton density fat fraction(MRI-PDFF)as the gold standard.METHODS A total of 131 suspected NAFLD patients(60%male,median age 36 years)under-going MRI-PDFF were consecutively recruited from a tertiary hospital.Steatosis grades determined by MRI-PDFF were classified as none(<5%),mild(5%-11%),moderate(11%-17%),and severe(≥17%).Six steatosis biomarkers were calculated according to clinical parameters and laboratory tests,including fatty liver index,hepatic steatosis index,ZJU index,Framingham steatosis index,triglycerides and glucose index,and visceral adiposity index.The accuracy of these biomarkers in detecting hepatic steatosis was evaluated using the area under the receiver operating characteristic curves(AUCs).The Youden index was used to determine the optimal cut-off for each biomarker.The linear trend analysis of each biomarker across the steatosis grades was conducted by Mantel-Haenszelχ2 test.Spearman's rank correlation assessed the relationship between steatosis biomarkers and MRI-PDFF.RESULTS Steatosis grades based on MRI-PDFF prevalence were:None 27%,mild 40%,moderate 15%and severe 18%.Six steatosis biomarkers showed a linear trend across the steatosis grades and a significant positive correlation with MRI-PDFF.The six steatosis biomarkers demonstrated AUCs near 0.90(range:0.857-0.912,all P<0.001)for diagnosing NAFLD by MRI-PDFF≥5%.The optimal cut-offs showed sensitivity between 84.4%-91.7%and specificity between 71.4%-85.7%.The diagnostic performance of these biomarkers in detecting moderate-to-severe and severe steatosis was relatively weaker.CONCLUSION These noninvasive steatosis biomarkers accurately diagnosed NAFLD and correlated well with MRI-PDFF for detecting NAFLD,but they did not effectively detect moderate or severe steatosis.展开更多
In this article,we explored the role of adipose tissue,especially mesenteric adipose tissue and creeping fat,and its association with the gut microbiota in the pathophysiology and progression of Crohn’s disease(CD).C...In this article,we explored the role of adipose tissue,especially mesenteric adipose tissue and creeping fat,and its association with the gut microbiota in the pathophysiology and progression of Crohn’s disease(CD).CD is a form of inflammatory bowel disease characterized by chronic inflammation of the gastrointestinal tract,influenced by genetic predisposition,gut microbiota dysbiosis,and environmental factors.Gut microbiota plays a crucial role in modulating immune response and intestinal inflammation and is associated with the onset and progression of CD.Further,visceral adipose tissue,particularly creeping fat,a mesenteric adipose tissue characterized by hypertrophy and fibrosis,has been implicated in CD pathogenesis,inflammation,and fibrosis.The bacteria from the gut microbiota may translocate into mesenteric adipose tissue,contributing to the formation of creeping fat and influencing CD progression.Although creeping fat may be a protective barrier against bacterial invasion,its expansion can damage adjacent tissues,leading to complications.Modulating gut microbiota through interventions such as fecal microbiota transplantation,probiotics,and prebiotics has shown potential in managing CD.However,more research is needed to clarify the mechanisms linking gut dysbiosis,creeping fat,and CD progression and develop targeted therapies for microbiota modulation and fat-related complications in patients with CD.展开更多
Background Intramuscular fat is an important factor in evaluating pork quality and varies widely among different pig breeds.However,the regulatory mechanism of circular RNAs(circRNAs)in lipid metabolism remains largel...Background Intramuscular fat is an important factor in evaluating pork quality and varies widely among different pig breeds.However,the regulatory mechanism of circular RNAs(circRNAs)in lipid metabolism remains largely unexplored.Results We combined circRNA-seq and Ribo-seq data to screen a total of 18 circRNA candidates with coding potential,and circANKRD17 was found to be significantly elevated in the longissimus dorsi muscle of Lantang piglets,with a length of 1,844 nucleotides.Using single-cell sequencing,we identified 477 differentially expressed genes in IMF cells between Lantang and Landrace piglets,with enrichment in the PPAR signaling pathway.These genes included FABP4,FABP5,CPT1A,and UBC,consistent with the high levels of acylcarnitines observed in the longissimus dorsi muscles of the Lantang breed,as determined by lipidomic analysis.Further in vitro and in vivo experiments indicated that circANKRD17 can regulate lipid metabolism through various mechanisms involving the PPAR pathway,including promoting adipocyte differentiation,fatty acid transport and metabolism,triglyceride synthesis,and lipid droplet formation and maturation.In addition,we discovered that circANKRD17 has an open reading frame and can be translated into a novel 571-amino-acid protein that promotes lipid metabolism.Conclusions Our research provides new insights into the role of protein-coding circANKRD17,especially concerning the metabolic characteristics of pig breeds with higher intramuscular fat content.展开更多
BACKGROUND Ankylosing spondylitis(AS)is recognized as a long-term inflammatory disorder that leads to inflammation in the spine and joints,alongside abnormal bone growth.In previous studies,we reported that mesenchyma...BACKGROUND Ankylosing spondylitis(AS)is recognized as a long-term inflammatory disorder that leads to inflammation in the spine and joints,alongside abnormal bone growth.In previous studies,we reported that mesenchymal stem cells(MSCs)derived from individuals with AS demonstrated a remarkable inhibition in the formation of osteoclasts compared to those obtained from healthy donors.The mechanism through which MSCs from AS patients achieve this inhibition remains unclear.AIM To investigate the potential underlying mechanism by which MSCs from individuals with ankylosing spondylitis(AS-MSCs)inhibit osteoclastogenesis.METHODS We analysed fat mass and obesity-associated(FTO)protein levels in AS-MSCs and MSCs from healthy donors and investigated the effects and mechanism by which FTO in MSCs inhibits osteoclastogenesis by coculturing and measuring the levels of tartrate-resistant acid phosphatase,nuclear factor of activated T cells 1 and cathepsin K.RESULTS We found that FTO,an enzyme responsible for removing methyl groups from RNA,was more abundantly expressed in MSCs from AS patients than in those from healthy donors.Reducing FTO levels was shown to diminish the capacity of MSCs to inhibit osteoclast development.Further experimental results revealed that FTO affects the stability of the long non-coding RNA activated by DNA damage(NORAD)by altering its N6-methyladenosine methylation status.Deactivating NORAD in MSCs significantly increased osteoclast formation by affecting miR-4284,which could regulate the MSC-mediated inhibition of osteoclastogenesis reported in our previous research.CONCLUSION This study revealed elevated FTO levels in AS-MSCs and found that FTO regulated the ability of AS-MSCs to inhibit osteoclast formation through the long noncoding RNA NORAD/miR-4284 axis.展开更多
BACKGROUND Diabetic retinopathy(DR)is a major microvascular complication of diabetes mellitus,leading to significant visual impairment and blindness among adults.Current treatment options are limited,making it essenti...BACKGROUND Diabetic retinopathy(DR)is a major microvascular complication of diabetes mellitus,leading to significant visual impairment and blindness among adults.Current treatment options are limited,making it essential to explore novel therapeutic strategies.Curcumol,a sesquiterpenoid derived from traditional Chinese medicine,has shown anti-inflammatory and anti-cancer properties,but its potential role in DR remains unclear.AIM To investigate the therapeutic effects of curcumol on the progression of DR and to elucidate the underlying molecular mechanisms,particularly its impact on the fat mass and obesity-associated(FTO)protein and the long non-coding RNA(lncRNA)MAF transcription factor G antisense RNA 1(MAFG-AS1).METHODS A streptozotocin-induced mouse model of DR was established,followed by treatment with curcumol.Retinal damage and inflammation were evaluated through histological analysis and molecular assays.Human retinal vascular endothelial cells were exposed to high glucose conditions to simulate diabetic environments in vitro.Cell proliferation,migration,and inflammation markers were assessed in curcumoltreated cells.LncRNA microarray analysis identified key molecules regulated by curcumol,and further experiments were conducted to confirm the involvement of FTO and MAFG-AS1 in the progression of DR.RESULTS Curcumol treatment significantly reduced blood glucose levels and alleviated retinal damage in streptozotocininduced DR mouse models.In high-glucose-treated human retinal vascular endothelial cells,curcumol inhibited cell proliferation,migration,and inflammatory responses.LncRNA microarray analysis identified MAFG-AS1 as the most upregulated lncRNA following curcumol treatment.Mechanistically,FTO demethylated MAFG-AS1,stabilizing its expression.Rescue experiments demonstrated that the protective effects of curcumol against DR were mediated through the FTO/MAFG-AS1 signaling pathway.CONCLUSION Curcumol ameliorates the progression of DR by modulating the FTO/MAFG-AS1 axis,providing a novel therapeutic pathway for the treatment of DR.These findings suggest that curcumol-based therapies could offer a promising alternative for managing this debilitating complication of diabetes.展开更多
Inflammatory bowel disease,particularly Crohn's disease(CD),has been linked to modifications in mesenteric adipose tissue(MAT)and the phenomenon known as"creeping fat"(CrF).The presence of CrF is believe...Inflammatory bowel disease,particularly Crohn's disease(CD),has been linked to modifications in mesenteric adipose tissue(MAT)and the phenomenon known as"creeping fat"(CrF).The presence of CrF is believed to serve as a predictor for early clinical recurrence following surgical intervention in patients with CD.Notably,the incorporation of the mesentery during ileocolic resection for CD has been correlated with a decrease in surgical recurrence,indicating the significant role of MAT in the pathogenesis of CD.While numerous studies have indicated that dysbiosis of the gut microbiota is a critical factor in the development of CD,the functional implications of translocated microbiota within the MAT of CD patients remain ambiguous.This manuscript commentary discusses a recent basic research conducted by Wu et al.In their study,intestinal bacteria from individuals were transplanted into CD model mice,revealing that fecal microbiota trans-plantation(FMT)from healthy donors alleviated CD symptoms,whereas FMT from CD patients exacerbated these symptoms.Importantly,FMT was found to affect intestinal permeability,barrier function,and the levels of proinflammatory factors and adipokines.Collectively,these findings suggest that targeting MAT and CrF may hold therapeutic potential for patients with CD.However,the study did not evaluate the composition of the intestinal microbiota of the donors or the subsequent alterations in the gut microbiota.Overall,the gut microbiota plays a crucial role in the histopathology of CD,and thus,targeting MAT and CrF may represent a promising avenue for treatment in this patient population.展开更多
BACKGROUND Autologous fat injection in facial reconstruction is a common cosmetic surgery.Although cerebral fat embolism(CFE)as a complication is rare,it carries serious health risks.CASE SUMMARY We present a case of ...BACKGROUND Autologous fat injection in facial reconstruction is a common cosmetic surgery.Although cerebral fat embolism(CFE)as a complication is rare,it carries serious health risks.CASE SUMMARY We present a case of a 29-year-old female patient who developed acute CFE following facial fat filling surgery.After the surgery,the patient experienced symptoms including headache,nausea,vomiting,and difficulty breathing,which was followed by neurological symptoms such as slurred speech and left-sided weakness.Comprehensive physical examination and auxiliary investigations,including blood tests,head and neck computed tomography angiography,and cranial magnetic resonance diffusion-weighted imaging,were performed upon admission.The clinical diagnosis was acute cerebral embolism following facial fat filling surgery.Treatment included measures to improve cerebral circulation,dehydration for intracranial pressure reduction,nutritional support,and rehabilitation therapy for left limb function.The patient showed a significant improvement in symptoms after 2 weeks of treatment.She recovered left limb muscle strength to grade 5,had clear speech,and experienced complete relief of headache.CONCLUSION Our case highlights the potential occurrence of severe complications in patients undergoing fat injection in facial reconstruction.To prevent these complications,plastic surgeons should enhance their professional knowledge and skills.展开更多
Background Dietary fat is important for energy provision and immune function of lactating sows and their progeny.However,knowledge on the impact of fat on mammary transcription of lipogenic genes,de novo fat synthesis...Background Dietary fat is important for energy provision and immune function of lactating sows and their progeny.However,knowledge on the impact of fat on mammary transcription of lipogenic genes,de novo fat synthesis,and milk fatty acid(FA)output is sparse in sows.This study aimed to evaluate impacts of dietary fat levels and FA composition on these traits in sows.Forty second-parity sows(Danish Landrace×Yorkshire)were assigned to 1 of 5 dietary treatments from d 108 of gestation until weaning(d 28 of lactation):low-fat control diet(3%added animal fat);or 1 of 4 high-fat diets with 8%added fat:coconut oil(CO),fish oil(FO),sunflower oil(SO),or 4%octanoic acid plus 4%FO(OFO).Three approaches were taken to estimate de novo milk fat synthesis from glucose and body fat.Results Daily intake of FA was lowest in low-fat sows within fat levels(P<0.01)and in OFO and FO sows within highfat diets(P<0.01).Daily milk outputs of fat,FA,energy,and FA-derived carbon reflected to a large extent the intake of those.On average,estimates for de novo fat synthesis were 82 or 194 g/d from glucose according to method 1 or 2 and 255 g de novo+mobilized FA/d according to method 3.The low-fat diet increased mammary FAS expression(P<0.05)and de novo fat synthesis(method 1;P=0.13)within fat levels.The OFO diet increased de novo fat synthesis(method 1;P<0.05)and numerically upregulated mammary FAS expression compared to the other high-fat diets.Across diets,a daily intake of 440 g digestible FA minimized milk fat originating from glucose and mobilized body fat.Conclusions Sows fed diets with low-fat or octanoic acid,through upregulating FAS expression,increased mammary de novo fat synthesis whereas the milk FA output remained low in sows fed the low-fat diet or high-fat OFO or FO diets,indicating that dietary FA intake,dietary fat level,and body fat mobilization in concert determine de novo fat synthesis,amount and profiles of FA in milk.展开更多
[Objective] The aim was to explore the inheritance of fat and fatty acid compositions in peanut.[Method] Genetic and correlation analyses were performed using a mixed genetic model of major gene plus polygene with 215...[Objective] The aim was to explore the inheritance of fat and fatty acid compositions in peanut.[Method] Genetic and correlation analyses were performed using a mixed genetic model of major gene plus polygene with 215 F9 RILs and their parents ZHENG 8903 and YUHUA No.4.[Result] The optimal genetic model of the fat content was two linked complementary major gene plus polygene inheritance model.The heritability of major genes was 22.88%.Oleic,linoleic,and palmitic acid content were controlled by two major genes and the heritability was 75.11%,75.00% and 60.95%,respectively.Stearic and arachidic acid content were controlled by two major genes plus polygenes,the heritability of major genes was 26.43% and 33.17%,respectively.O/L ratio and behenic acid content were controlled by three major genes,the heritability was 70.65% and 30.70%,respectively.[Conclusion] The result in this study was that accumulating polygenes should be emphasized in the improvement of fat content,while utilization of major genes is enhanced in improvement of oleic and linoleic acids.展开更多
Background: In the global burden of non-communicable diseases, the top slot among them all is occupied by various cardiovascular diseases (CVD), which also claim primacy in mortality rates. Generally speaking, the pat...Background: In the global burden of non-communicable diseases, the top slot among them all is occupied by various cardiovascular diseases (CVD), which also claim primacy in mortality rates. Generally speaking, the pathophysiological pathway frequently involves either (or a combination of) elevated serum cholesterol levels, predominantly attributed to dietary patterns characterized by extremely high levels of saturated and trans-fat consumption. Day-to-day nutritional epidemiology among university students suggests that they represent a crucial demographic for the study of preventive interventions. Objective: This in-depth study and investigation were specifically aimed to quantitatively assess and compare prevailing patterns of dietary fat consumption between female students enrolled in health sciences and non-health sciences programs at major universities in Riyadh, Saudi Arabia. Methodology: This cross-sectional study was comprised of 434 Saudi female university students (age range: 18 - 25 years), utilizing a validated Block Dietary Fat Screener accompanied by anthropometric measurements and comprehensive demographic data collection. The sampling methodology consisted of a snowball technique that was spread across three major academic institutions in Riyadh. Results: Statistical analysis revealed a significant association between academic specialization and patterns of dietary fat consumption (p = 0.012). Paradoxically, students of health science exhibited a higher prevalence of very high fat intake (41.9%) compared with their non-health sciences counterparts (27.6%). Surprisingly, anthropometric stratification revealed that it was the underweight students who demonstrated very high levels of fat consumption. A notable socioeconomic gradient was observed, with students from households earning 15,000 - 20,000 SR monthly showing the highest prevalence of very high-fat consumption (47.1%), although this association did not achieve statistical significance (p = 0.104). Conclusion: These findings challenge the conventional assumption that health sciences education correlates with superior dietary behaviors. The data suggests a critical need for enhanced education in nutrition, as well as intervention using various behavioral programs across all academic disciplines, particularly those addressing the disconnect between nutritional knowledge and dietary practices among students of health sciences. Future longitudinal studies are warranted in order to elucidate the temporal relationship between academic specialization and dietary behaviors.展开更多
基金supported by the Yanzhao Gold Talent Project of Hebei Province(NO.HJZD202506)。
文摘Objective Previous studies link lower body mass index(BMI)with increased obsessive-compulsive disorder(OCD)risk,yet other body mass indicators may be more etioloically relevant.We dissected the causal association between body fat mass(FM)and OCD.Methods Summary statistics from genome-wide association studies of European ancestry were utilized to conduct two-sample Mendelian randomization analysis.Heterogeneity,horizontal pleiotropy,and sensitivity analyses were performed to assess the robustness.Results The inverse variance weighting method demonstrated that a genetically predicted decrease in FM was causally associated with an increased OCD risk[odds ratio(OR)=0.680,95%confidence interval(CI):0.528–0.875,P=0.003].Similar estimates were obtained using the weighted median approach(OR=0.633,95%CI:0.438–0.915,P=0.015).Each standard deviation increases in genetically predicted body fat percentage corresponded to a reduced OCD risk(OR=0.638,95%CI:0.455–0.896,P=0.009).The sensitivity analysis confirmed the robustness of these findings with no outlier instrument variables identified.Conclusion The negative causal association between FM and the risk of OCD suggests that the prevention or treatment of mental disorders should include not only the control of BMI but also fat distribution and body composition.
文摘Overweight and obesity has been a major public health problem globally.It was estimated that more than 2.1 billion adults were affected by overweight or obese in 2021 worldwide,about one fifth of whom lived in China^([1]).By 2050,the country is forecast to remain the one with the largest population of overweight and obese globally^([1]),if no effective strategies were applied on overweight/obesity control.
基金supported by the Special Project of National Science and Technology Basic Resources Survey(Grant No.2017FY101100)。
文摘Objective The rising prevalence of childhood obesity is closely associated with suboptimal dietary patterns.To address this public health concern,we conducted a comprehensive study to examine the association between coarse cereals consumption and body fat percentage(BFP)in Chinese children and adolescents.Methods The study included 48,305 children aged 6–17 years from 28 districts/counties in 14 provinces across seven regions of China(24,152 girls and 24,153 boys).BFP was examined using bioelectrical impedance analysis in the early morning.Coarse cereals consumption was assessed using a Food Frequency Questionnaire and categorized into three groups:0 g/1,000 kcal per day,0–10 g/1,000kcal per day,and>10 g/1,000 kcal per day(daily consumption of coarse cereals×1,000/total energy consumption).Quantile regression model was used to analyze the association between coarse cereals and BFP,adjusting for potential confounders such as age,pubertal development stage,urban/rural and regional factors,total daily dietary energy consumption,sedentary time,moderate-to-high physical activity,household income,parental education,and consumption of other foods.Results Boys aged 6–10,11–14,and 15–17 years had median daily coarse cereals consumptions of6.6 g,7.1 g,and 5.7 g,with BFP of 19.6%,19.5%,and 17.5%(all P<0.05).Girls in the same age groups showed consumption of 7.1 g,8.4 g,and 6.7 g,with BFP of 20.3%,26.4%,and 31.0%(all P<0.05).The quantile regression results for boys showed that daily consumption of coarse cereals was significantly correlated with their BFP in the 0.15,0.25,and 0.50 quartiles,with regression coefficients of-0.257,-0.221,and-0.330,respectively,after adjusting for potential confounders(P<0.05).For girls,there was a significant correlation with PBF at the 0.05,0.15,0.25,0.50,0.75,and 0.85 quartiles,with regression coefficients of-0.258,-0.366,-0.372,-0.431,-0.472,and-0.503(P<0.05 for all).Conclusions Coarse cereals consumption among Chinese children and adolescents remains relatively low.Higher consumption was inversely associated with BFP in children aged 6–17 years.Future interventional studies should assess how increased coarse cereals consumption prevents childhood obesity.
基金supported by grants from the Major Projects of Health Science Research Foundation for Middle-Aged and Young Scientist of Fujian Province,China,No.2022ZQNZD01010010the National Natural Science Foundation of China,No.82371390Fujian Province Scientific Foundation,No.2023J01725(all to XC).
文摘The neuroinflammatory response mediated by microglial activation plays an important role in the secondary nerve injury of traumatic brain injury.The post-transcriptional modification of N^(6)-methyladenosine is ubiquitous in the immune response of the central nervous system.The fat mass and obesity-related protein catalyzes the demethylation of N^(6)-methyladenosine modifications on mRNA and is widely expressed in various tissues,participating in the regulation of multiple diseases’biological processes.However,the role of fat mass and obesity in microglial activation and the subsequent neuroinflammatory response after traumatic brain injury is unclear.In this study,we found that the expression of fat mass and obesity was significantly down-regulated in both lipopolysaccharide-treated BV2 cells and a traumatic brain injury mouse model.After fat mass and obesity interference,BV2 cells exhibited a pro-inflammatory phenotype as shown by the increased proportion of CD11b^(+)/CD86^(+)cells and the secretion of pro-inflammatory cytokines.Fat mass and obesity-mediated N^(6)-methyladenosine demethylation accelerated the degradation of ADAM17 mRNA,while silencing of fat mass and obesity enhanced the stability of ADAM17 mRNA.Therefore,down-regulation of fat mass and obesity expression leads to the abnormally high expression of ADAM17 in microglia.These results indicate that the activation of microglia and neuroinflammatory response regulated by fat mass and obesity-related N^(6)-methyladenosine modification plays an important role in the pro-inflammatory process of secondary injury following traumatic brain injury.
基金Supported by National Natural Science Foundation of China,No.82170651and the Research Support Fund of Hubei Microcirculation Society,No.HBWXH2024(1)-1.
文摘Intrapancreatic fat deposition(IPFD)has garnered increasing attention in recent years.The prevalence of IPFD is relatively high and associated with factors such as obesity,age,and sex.However,the pathophysiological mechanisms underlying IPFD remain unclear,with several potential contributing factors,including oxida-tive stress,alterations in the gut microbiota,and hormonal imbalances.IPFD was found to be highly correlated with the occurrence and prognosis of exocrine pan-creatic diseases.Although imaging techniques remain the primary diagnostic approach for IPFD,an expanding array of biomarkers and clinical scoring systems have been identified for screening purposes.Currently,effective treatments for IPFD are not available;however,existing medications,such as glucagon-like peptide-1 receptor agonists,and new therapeutic approaches explored in animal models have shown considerable potential for managing this disease.This paper reviews the pathogenesis of IPFD,its association with exocrine pancreatic disea-ses,and recent advancements in its diagnosis and treatment,emphasizing the significant clinical relevance of IPFD.
基金funded by the National Natural Science Foundation of China(32172761)the Key Research and Development Program of Hunan Province,China(2023NK2018)+1 种基金“Huxiang Young Talents Plan”Project of Hunan Province,China(2022RC1157)the College of Animal Science and Technology,Hunan Agricultural University for support。
文摘Intramuscular fat(IMF)is an important economic trait for pork quality,affecting meat flavour,juiciness,and tenderness.Hence,the improvement of IMF content is one of the hotspots of animal science to provide better meat product.Here,we found that most IMF-related genes are enriched in lipid metabolism processes,including fatty acid transport and uptake,fatty acid beta oxidation,lipid synthesis,lipid storage,and lipolysis.PPAR and AMPK signalling pathways are identified to be responsible for IMF deposition.Genetics and nongenetic factors(i.e.,diets,gut microbiota,age,sex and management)also positively or negatively regulate the IMF content in pigs.Taken together,this review deepens our understanding of how these factors affect pig IMF deposition and provides valuable information for moderately increasing IMF content.
基金Supported by the Leap-forward Development Program for Beijing Biopharmaceutical Industry(G20),No.Z171100001717008the Fundamental Research Funds for the Central Universities and Research projects on biomedical transformation of China-Japan Friendship Hospital,No.PYBZ1815.
文摘BACKGROUND Nonalcoholic fatty liver disease(NAFLD)is the most common chronic liver disea-se.The accuracy of noninvasive biomarkers for detecting hepatic steatosis is still limited.AIM To assess the diagnostic performance of noninvasive steatosis biomarkers in diag-nosing NAFLD using magnetic resonance imaging proton density fat fraction(MRI-PDFF)as the gold standard.METHODS A total of 131 suspected NAFLD patients(60%male,median age 36 years)under-going MRI-PDFF were consecutively recruited from a tertiary hospital.Steatosis grades determined by MRI-PDFF were classified as none(<5%),mild(5%-11%),moderate(11%-17%),and severe(≥17%).Six steatosis biomarkers were calculated according to clinical parameters and laboratory tests,including fatty liver index,hepatic steatosis index,ZJU index,Framingham steatosis index,triglycerides and glucose index,and visceral adiposity index.The accuracy of these biomarkers in detecting hepatic steatosis was evaluated using the area under the receiver operating characteristic curves(AUCs).The Youden index was used to determine the optimal cut-off for each biomarker.The linear trend analysis of each biomarker across the steatosis grades was conducted by Mantel-Haenszelχ2 test.Spearman's rank correlation assessed the relationship between steatosis biomarkers and MRI-PDFF.RESULTS Steatosis grades based on MRI-PDFF prevalence were:None 27%,mild 40%,moderate 15%and severe 18%.Six steatosis biomarkers showed a linear trend across the steatosis grades and a significant positive correlation with MRI-PDFF.The six steatosis biomarkers demonstrated AUCs near 0.90(range:0.857-0.912,all P<0.001)for diagnosing NAFLD by MRI-PDFF≥5%.The optimal cut-offs showed sensitivity between 84.4%-91.7%and specificity between 71.4%-85.7%.The diagnostic performance of these biomarkers in detecting moderate-to-severe and severe steatosis was relatively weaker.CONCLUSION These noninvasive steatosis biomarkers accurately diagnosed NAFLD and correlated well with MRI-PDFF for detecting NAFLD,but they did not effectively detect moderate or severe steatosis.
基金Supported by the Postdoctoral Scholarship Grant,No.5552/2024 PROPG/PROPE N°06/2024.
文摘In this article,we explored the role of adipose tissue,especially mesenteric adipose tissue and creeping fat,and its association with the gut microbiota in the pathophysiology and progression of Crohn’s disease(CD).CD is a form of inflammatory bowel disease characterized by chronic inflammation of the gastrointestinal tract,influenced by genetic predisposition,gut microbiota dysbiosis,and environmental factors.Gut microbiota plays a crucial role in modulating immune response and intestinal inflammation and is associated with the onset and progression of CD.Further,visceral adipose tissue,particularly creeping fat,a mesenteric adipose tissue characterized by hypertrophy and fibrosis,has been implicated in CD pathogenesis,inflammation,and fibrosis.The bacteria from the gut microbiota may translocate into mesenteric adipose tissue,contributing to the formation of creeping fat and influencing CD progression.Although creeping fat may be a protective barrier against bacterial invasion,its expansion can damage adjacent tissues,leading to complications.Modulating gut microbiota through interventions such as fecal microbiota transplantation,probiotics,and prebiotics has shown potential in managing CD.However,more research is needed to clarify the mechanisms linking gut dysbiosis,creeping fat,and CD progression and develop targeted therapies for microbiota modulation and fat-related complications in patients with CD.
基金supported by the Biological Breeding-Major Projects in National Science and Technology[grant numbers 2023ZD04044]the Natural Science Foundation of China Program[grant numbers 32072714].
文摘Background Intramuscular fat is an important factor in evaluating pork quality and varies widely among different pig breeds.However,the regulatory mechanism of circular RNAs(circRNAs)in lipid metabolism remains largely unexplored.Results We combined circRNA-seq and Ribo-seq data to screen a total of 18 circRNA candidates with coding potential,and circANKRD17 was found to be significantly elevated in the longissimus dorsi muscle of Lantang piglets,with a length of 1,844 nucleotides.Using single-cell sequencing,we identified 477 differentially expressed genes in IMF cells between Lantang and Landrace piglets,with enrichment in the PPAR signaling pathway.These genes included FABP4,FABP5,CPT1A,and UBC,consistent with the high levels of acylcarnitines observed in the longissimus dorsi muscles of the Lantang breed,as determined by lipidomic analysis.Further in vitro and in vivo experiments indicated that circANKRD17 can regulate lipid metabolism through various mechanisms involving the PPAR pathway,including promoting adipocyte differentiation,fatty acid transport and metabolism,triglyceride synthesis,and lipid droplet formation and maturation.In addition,we discovered that circANKRD17 has an open reading frame and can be translated into a novel 571-amino-acid protein that promotes lipid metabolism.Conclusions Our research provides new insights into the role of protein-coding circANKRD17,especially concerning the metabolic characteristics of pig breeds with higher intramuscular fat content.
基金Supported by Guangdong Provincial Clinical Research Center for Orthopedic Diseases,No.2023B110001the Excellent Medical Innovation Talent Program of the Eighth Affiliated Hospital of Sun Yat-sen University,No.YXYXCXRC202101+3 种基金the National Natural Science Foundation of China,No.82172349,No.82372372,No.22105229,No.32170708,No.82102530,No.82102541,No.82103098,No.82103909,No.82104182,No.82104350,No.82170427,No.82171291,No.82172215,No.82172385,and No.82302661Guangdong Natural Science Foundation,No.2023A1515010568 and No.2021A1515111057Shenzhen Science and Technology Program,No.JCYJ20220530144201004 and No.RCBS20210609104445097Futian Healthcare Research Project,No.FTWS2022022,No.FTWS2021013,No.FTWS2023072,and No.FTWS2022047.
文摘BACKGROUND Ankylosing spondylitis(AS)is recognized as a long-term inflammatory disorder that leads to inflammation in the spine and joints,alongside abnormal bone growth.In previous studies,we reported that mesenchymal stem cells(MSCs)derived from individuals with AS demonstrated a remarkable inhibition in the formation of osteoclasts compared to those obtained from healthy donors.The mechanism through which MSCs from AS patients achieve this inhibition remains unclear.AIM To investigate the potential underlying mechanism by which MSCs from individuals with ankylosing spondylitis(AS-MSCs)inhibit osteoclastogenesis.METHODS We analysed fat mass and obesity-associated(FTO)protein levels in AS-MSCs and MSCs from healthy donors and investigated the effects and mechanism by which FTO in MSCs inhibits osteoclastogenesis by coculturing and measuring the levels of tartrate-resistant acid phosphatase,nuclear factor of activated T cells 1 and cathepsin K.RESULTS We found that FTO,an enzyme responsible for removing methyl groups from RNA,was more abundantly expressed in MSCs from AS patients than in those from healthy donors.Reducing FTO levels was shown to diminish the capacity of MSCs to inhibit osteoclast development.Further experimental results revealed that FTO affects the stability of the long non-coding RNA activated by DNA damage(NORAD)by altering its N6-methyladenosine methylation status.Deactivating NORAD in MSCs significantly increased osteoclast formation by affecting miR-4284,which could regulate the MSC-mediated inhibition of osteoclastogenesis reported in our previous research.CONCLUSION This study revealed elevated FTO levels in AS-MSCs and found that FTO regulated the ability of AS-MSCs to inhibit osteoclast formation through the long noncoding RNA NORAD/miR-4284 axis.
文摘BACKGROUND Diabetic retinopathy(DR)is a major microvascular complication of diabetes mellitus,leading to significant visual impairment and blindness among adults.Current treatment options are limited,making it essential to explore novel therapeutic strategies.Curcumol,a sesquiterpenoid derived from traditional Chinese medicine,has shown anti-inflammatory and anti-cancer properties,but its potential role in DR remains unclear.AIM To investigate the therapeutic effects of curcumol on the progression of DR and to elucidate the underlying molecular mechanisms,particularly its impact on the fat mass and obesity-associated(FTO)protein and the long non-coding RNA(lncRNA)MAF transcription factor G antisense RNA 1(MAFG-AS1).METHODS A streptozotocin-induced mouse model of DR was established,followed by treatment with curcumol.Retinal damage and inflammation were evaluated through histological analysis and molecular assays.Human retinal vascular endothelial cells were exposed to high glucose conditions to simulate diabetic environments in vitro.Cell proliferation,migration,and inflammation markers were assessed in curcumoltreated cells.LncRNA microarray analysis identified key molecules regulated by curcumol,and further experiments were conducted to confirm the involvement of FTO and MAFG-AS1 in the progression of DR.RESULTS Curcumol treatment significantly reduced blood glucose levels and alleviated retinal damage in streptozotocininduced DR mouse models.In high-glucose-treated human retinal vascular endothelial cells,curcumol inhibited cell proliferation,migration,and inflammatory responses.LncRNA microarray analysis identified MAFG-AS1 as the most upregulated lncRNA following curcumol treatment.Mechanistically,FTO demethylated MAFG-AS1,stabilizing its expression.Rescue experiments demonstrated that the protective effects of curcumol against DR were mediated through the FTO/MAFG-AS1 signaling pathway.CONCLUSION Curcumol ameliorates the progression of DR by modulating the FTO/MAFG-AS1 axis,providing a novel therapeutic pathway for the treatment of DR.These findings suggest that curcumol-based therapies could offer a promising alternative for managing this debilitating complication of diabetes.
文摘Inflammatory bowel disease,particularly Crohn's disease(CD),has been linked to modifications in mesenteric adipose tissue(MAT)and the phenomenon known as"creeping fat"(CrF).The presence of CrF is believed to serve as a predictor for early clinical recurrence following surgical intervention in patients with CD.Notably,the incorporation of the mesentery during ileocolic resection for CD has been correlated with a decrease in surgical recurrence,indicating the significant role of MAT in the pathogenesis of CD.While numerous studies have indicated that dysbiosis of the gut microbiota is a critical factor in the development of CD,the functional implications of translocated microbiota within the MAT of CD patients remain ambiguous.This manuscript commentary discusses a recent basic research conducted by Wu et al.In their study,intestinal bacteria from individuals were transplanted into CD model mice,revealing that fecal microbiota trans-plantation(FMT)from healthy donors alleviated CD symptoms,whereas FMT from CD patients exacerbated these symptoms.Importantly,FMT was found to affect intestinal permeability,barrier function,and the levels of proinflammatory factors and adipokines.Collectively,these findings suggest that targeting MAT and CrF may hold therapeutic potential for patients with CD.However,the study did not evaluate the composition of the intestinal microbiota of the donors or the subsequent alterations in the gut microbiota.Overall,the gut microbiota plays a crucial role in the histopathology of CD,and thus,targeting MAT and CrF may represent a promising avenue for treatment in this patient population.
基金Supported by The National Natural Science Foundation of China,No.82171334The Chongqing Science and Health Joint Medical Research Project,No.2024MSXM155.
文摘BACKGROUND Autologous fat injection in facial reconstruction is a common cosmetic surgery.Although cerebral fat embolism(CFE)as a complication is rare,it carries serious health risks.CASE SUMMARY We present a case of a 29-year-old female patient who developed acute CFE following facial fat filling surgery.After the surgery,the patient experienced symptoms including headache,nausea,vomiting,and difficulty breathing,which was followed by neurological symptoms such as slurred speech and left-sided weakness.Comprehensive physical examination and auxiliary investigations,including blood tests,head and neck computed tomography angiography,and cranial magnetic resonance diffusion-weighted imaging,were performed upon admission.The clinical diagnosis was acute cerebral embolism following facial fat filling surgery.Treatment included measures to improve cerebral circulation,dehydration for intracranial pressure reduction,nutritional support,and rehabilitation therapy for left limb function.The patient showed a significant improvement in symptoms after 2 weeks of treatment.She recovered left limb muscle strength to grade 5,had clear speech,and experienced complete relief of headache.CONCLUSION Our case highlights the potential occurrence of severe complications in patients undergoing fat injection in facial reconstruction.To prevent these complications,plastic surgeons should enhance their professional knowledge and skills.
基金Financially supported by the Danish Council for Independent Research,Technology and Production Sciences (Copenhagen K,Denmark)。
文摘Background Dietary fat is important for energy provision and immune function of lactating sows and their progeny.However,knowledge on the impact of fat on mammary transcription of lipogenic genes,de novo fat synthesis,and milk fatty acid(FA)output is sparse in sows.This study aimed to evaluate impacts of dietary fat levels and FA composition on these traits in sows.Forty second-parity sows(Danish Landrace×Yorkshire)were assigned to 1 of 5 dietary treatments from d 108 of gestation until weaning(d 28 of lactation):low-fat control diet(3%added animal fat);or 1 of 4 high-fat diets with 8%added fat:coconut oil(CO),fish oil(FO),sunflower oil(SO),or 4%octanoic acid plus 4%FO(OFO).Three approaches were taken to estimate de novo milk fat synthesis from glucose and body fat.Results Daily intake of FA was lowest in low-fat sows within fat levels(P<0.01)and in OFO and FO sows within highfat diets(P<0.01).Daily milk outputs of fat,FA,energy,and FA-derived carbon reflected to a large extent the intake of those.On average,estimates for de novo fat synthesis were 82 or 194 g/d from glucose according to method 1 or 2 and 255 g de novo+mobilized FA/d according to method 3.The low-fat diet increased mammary FAS expression(P<0.05)and de novo fat synthesis(method 1;P=0.13)within fat levels.The OFO diet increased de novo fat synthesis(method 1;P<0.05)and numerically upregulated mammary FAS expression compared to the other high-fat diets.Across diets,a daily intake of 440 g digestible FA minimized milk fat originating from glucose and mobilized body fat.Conclusions Sows fed diets with low-fat or octanoic acid,through upregulating FAS expression,increased mammary de novo fat synthesis whereas the milk FA output remained low in sows fed the low-fat diet or high-fat OFO or FO diets,indicating that dietary FA intake,dietary fat level,and body fat mobilization in concert determine de novo fat synthesis,amount and profiles of FA in milk.
基金Science and Technology Innovation Talents Scheme in Henan Prov-ince (104200510003)~~
文摘[Objective] The aim was to explore the inheritance of fat and fatty acid compositions in peanut.[Method] Genetic and correlation analyses were performed using a mixed genetic model of major gene plus polygene with 215 F9 RILs and their parents ZHENG 8903 and YUHUA No.4.[Result] The optimal genetic model of the fat content was two linked complementary major gene plus polygene inheritance model.The heritability of major genes was 22.88%.Oleic,linoleic,and palmitic acid content were controlled by two major genes and the heritability was 75.11%,75.00% and 60.95%,respectively.Stearic and arachidic acid content were controlled by two major genes plus polygenes,the heritability of major genes was 26.43% and 33.17%,respectively.O/L ratio and behenic acid content were controlled by three major genes,the heritability was 70.65% and 30.70%,respectively.[Conclusion] The result in this study was that accumulating polygenes should be emphasized in the improvement of fat content,while utilization of major genes is enhanced in improvement of oleic and linoleic acids.
文摘Background: In the global burden of non-communicable diseases, the top slot among them all is occupied by various cardiovascular diseases (CVD), which also claim primacy in mortality rates. Generally speaking, the pathophysiological pathway frequently involves either (or a combination of) elevated serum cholesterol levels, predominantly attributed to dietary patterns characterized by extremely high levels of saturated and trans-fat consumption. Day-to-day nutritional epidemiology among university students suggests that they represent a crucial demographic for the study of preventive interventions. Objective: This in-depth study and investigation were specifically aimed to quantitatively assess and compare prevailing patterns of dietary fat consumption between female students enrolled in health sciences and non-health sciences programs at major universities in Riyadh, Saudi Arabia. Methodology: This cross-sectional study was comprised of 434 Saudi female university students (age range: 18 - 25 years), utilizing a validated Block Dietary Fat Screener accompanied by anthropometric measurements and comprehensive demographic data collection. The sampling methodology consisted of a snowball technique that was spread across three major academic institutions in Riyadh. Results: Statistical analysis revealed a significant association between academic specialization and patterns of dietary fat consumption (p = 0.012). Paradoxically, students of health science exhibited a higher prevalence of very high fat intake (41.9%) compared with their non-health sciences counterparts (27.6%). Surprisingly, anthropometric stratification revealed that it was the underweight students who demonstrated very high levels of fat consumption. A notable socioeconomic gradient was observed, with students from households earning 15,000 - 20,000 SR monthly showing the highest prevalence of very high-fat consumption (47.1%), although this association did not achieve statistical significance (p = 0.104). Conclusion: These findings challenge the conventional assumption that health sciences education correlates with superior dietary behaviors. The data suggests a critical need for enhanced education in nutrition, as well as intervention using various behavioral programs across all academic disciplines, particularly those addressing the disconnect between nutritional knowledge and dietary practices among students of health sciences. Future longitudinal studies are warranted in order to elucidate the temporal relationship between academic specialization and dietary behaviors.
