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The potential role of adipokines and hepatokines in age-related ocular diseases 脂肪因子和肝因子在年龄相关性眼病中的潜在作用
Metabolism open Pub Date : 2025-04-16 DOI: 10.1016/j.metop.2025.100365
Stavroula Almpanidou, Ilias D. Vachliotis, Antonis Goulas, Stergios A. Polyzos
{"title":"The potential role of adipokines and hepatokines in age-related ocular diseases","authors":"Stavroula Almpanidou,&nbsp;Ilias D. Vachliotis,&nbsp;Antonis Goulas,&nbsp;Stergios A. Polyzos","doi":"10.1016/j.metop.2025.100365","DOIUrl":"10.1016/j.metop.2025.100365","url":null,"abstract":"<div><div>Age-related ocular diseases, including diabetic retinopathy (DR), age-related macular degeneration (AMD), cataract and glaucoma may lead to visual impairment and even to blindness. Metabolic diseases, such as obesity and metabolic dysfunction-associated steatotic liver disease (MASLD) have emerged as potential risk factors of age-related ocular diseases, especially DR. Visceral adiposity has been associated with increased risk of DR and AMD in most clinical studies, although body mass index has to-date provided conflicting association with DR and AMD. In addition, obesity is recognized as a risk factor of cataract and glaucoma. Similarly to obesity, MASLD appears to be associated with DR in patients with type 1 diabetes mellitus, but probably not in those with type 2 diabetes mellitus. A potential positive association between MASLD and AMD, glaucoma and cataract is supported by limited evidence to-date, thus needing further investigation. Altered secretion patterns of adipokines (adiponectin, leptin, lipocalin-2, resistin) and hepatokines [adropin, fetuin-A, fibroblast growth factor (FGF)-21, retinol binding protein (RBP)-4] seem to disrupt ocular homeostasis and contribute to the development of age-related ocular diseases in the context of obesity and MASLD. In this regard, novel adipokine-based and hepatokine-based therapies may be added to the treatment options for ocular diseases in the future. This narrative review aimed to summarize evidence on the interconnection of obesity and MASLD with age-related ocular diseases, with a specific focus on the roles of adipokines and hepatokines as mediators of these potential associations.</div></div>","PeriodicalId":94141,"journal":{"name":"Metabolism open","volume":"26 ","pages":"Article 100365"},"PeriodicalIF":0.0,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143854373","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Comprehensive profiling of candidate biomarkers and immune infiltration landscape in metabolic dysfunction-associated steatohepatitis 代谢功能障碍相关脂肪性肝炎候选生物标志物和免疫浸润景观的综合分析
Metabolism open Pub Date : 2025-04-15 DOI: 10.1016/j.metop.2025.100366
Zhangliu Jin , Jianyun Cao , Zhaoxun Liu , Mei Gao , Hailan Liu
{"title":"Comprehensive profiling of candidate biomarkers and immune infiltration landscape in metabolic dysfunction-associated steatohepatitis","authors":"Zhangliu Jin ,&nbsp;Jianyun Cao ,&nbsp;Zhaoxun Liu ,&nbsp;Mei Gao ,&nbsp;Hailan Liu","doi":"10.1016/j.metop.2025.100366","DOIUrl":"10.1016/j.metop.2025.100366","url":null,"abstract":"<div><h3>Background</h3><div>The incidence of metabolic dysfunction-associated steatohepatitis (MASH) is increasing, with an incompletely understood pathophysiology involving multiple factors, particularly innate and adaptive immune responses. Given the limited pharmacological treatments available, identification of novel immune metabolic targets is urgently needed. In this study, we aimed to identify hub immune-related genes and potential biomarkers with diagnostic and predictive value for MASH patients.</div></div><div><h3>Methods</h3><div>The GSE164760 dataset from the Gene Expression Omnibus was utilized for analysis, and the R package was used to identify differentially expressed genes. Immune-related differentially expressed genes (IR-DEGs) were identified by comparing the overlap of differentially expressed genes with well-known immune-related genes. Furthermore, the biological processes and molecular functions of the IR-DEGs were analyzed. To characterize the hub IR-DEGs, we employed a protein-protein interaction network. The diagnostic and predictive values of these hub IR-DEGs in MASH were confirmed using GSE48452 and GSE63067 datasets. Finally, the significance of the hub IR-DEGs was validated using a mouse model of MASH.</div></div><div><h3>Results</h3><div>A total of 91 IR-DEGs were identified, with 61 upregulated and 30 downregulated genes. Based on the protein-protein interaction network, FN1, RHOA, FOS, PDGFRα, CCND1, PIK3R1, CSF1, and FGF3 were identified as the hub IR-DEGs. Moreover, we found that these hub genes are closely correlated with immune cells. Notably, the validation across two independent cohorts as well as a murine MASH model confirmed their high diagnostic potential.</div></div><div><h3>Conclusion</h3><div>The hub IR-DEGs, such as FN1, RHOA, FOS, PDGFRα, CCND1, PIK3R1, CSF1, and FGF3, may enhance the diagnosis and prognosis of MASH by modulating immune homeostasis.</div></div>","PeriodicalId":94141,"journal":{"name":"Metabolism open","volume":"26 ","pages":"Article 100366"},"PeriodicalIF":0.0,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143848243","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Hypoglycemia compensation mechanisms in dry fasting 干断食中的低血糖补偿机制
Metabolism open Pub Date : 2025-04-15 DOI: 10.1016/j.metop.2025.100363
Ioannis-Eleemon Papagiannopoulos-Vatopaidinos , Maria I. Papagiannopoulou , Eleni N. Dotsika
{"title":"Hypoglycemia compensation mechanisms in dry fasting","authors":"Ioannis-Eleemon Papagiannopoulos-Vatopaidinos ,&nbsp;Maria I. Papagiannopoulou ,&nbsp;Eleni N. Dotsika","doi":"10.1016/j.metop.2025.100363","DOIUrl":"10.1016/j.metop.2025.100363","url":null,"abstract":"<div><h3>Background</h3><div>Dry fasting (DF) presents three primary risks: hypovolemia, hypertonicity, and hypoglycemia. The first two have been shown to be effectively compensated, and the respective mechanisms have been studied. The behavior of glucose has only been roughly described, while the hypoglycemia compensation mechanisms remain unexplored.</div></div><div><h3>Objectives</h3><div>Studying the glucose behavior, the hypoglycemia compensation mechanisms, and the insulin resistance during DF.</div></div><div><h3>Methods</h3><div>Following parameters were daily monitored in ten participants undergoing a 5-day DF: Weight, body circumferences, glucose, creatinine clearance (GFR), insulin, HOMA-IR, acetoacetate in 24-h urine, glucagon, growth hormone (GH), IGF-1, TSH, T<sub>4</sub>, T<sub>3</sub>, leptin, cholesterol, LDL-cholesterol (LDL-C), HDL-cholesterol (HDL-C), triglycerides, and the enzymes LDH, CPK, SGPT, SGOT, and γGT.</div></div><div><h3>Results</h3><div>Weight, body circumferences, TSH, T<sub>3</sub>, and T<sub>4</sub> decreased to minima on Day 5; insulin and HOMA-IR decreased, reaching minima on Day 4; GH, cholesterol, LDL-C, and acetoacetate increased to maxima on Day 5; Glucagon, IGF-1, and GFR increased, presenting maxima on Day 4; Glucose, leptin, and triglycerides exhibited biphasic profiles with minima on Days 3, 3, and 2, respectively; HDL-C, LDH, CPK, SGPT, SGOT, and γGT showed minimal or non-significant changes.</div></div><div><h3>Conclusion</h3><div>A comprehensive description of glucose behavior and the hypoglycemia compensation mechanisms in DF were presented. DF decreased insulin resistance, likely by improving the blood – cell interphase, and enhanced GFR. The increase in LDL-C, tissue-protecting IGF-1, and late increase in leptin and triglycerides were unexpected. The results may inform the development of novel therapeutic approaches for obesity, metabolic syndrome, type-2-diabetes, non-alcoholic fatty liver disease, adiposity, and atheromatous diseases.</div></div>","PeriodicalId":94141,"journal":{"name":"Metabolism open","volume":"26 ","pages":"Article 100363"},"PeriodicalIF":0.0,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143838276","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Truncated variant rs373056577 confers increased risk of type 2 diabetes and missense variant rs121912717 is associated with hypertriglyceridemia in Bangladeshi population 在孟加拉国人群中,截断变异rs373056577增加了2型糖尿病的风险,错义变异rs121912717与高甘油三酯血症相关
Metabolism open Pub Date : 2025-04-14 DOI: 10.1016/j.metop.2025.100364
Shomoita Sayed , Abdullah Al Saba , Imrul Hasan , Rafia Rahat , Mohammad Sayem , Akio Ebihara , A.H.M. Nurun Nabi
{"title":"Truncated variant rs373056577 confers increased risk of type 2 diabetes and missense variant rs121912717 is associated with hypertriglyceridemia in Bangladeshi population","authors":"Shomoita Sayed ,&nbsp;Abdullah Al Saba ,&nbsp;Imrul Hasan ,&nbsp;Rafia Rahat ,&nbsp;Mohammad Sayem ,&nbsp;Akio Ebihara ,&nbsp;A.H.M. Nurun Nabi","doi":"10.1016/j.metop.2025.100364","DOIUrl":"10.1016/j.metop.2025.100364","url":null,"abstract":"<div><div>This study investigates the association of allelic and genotypic variations of rs121912717 and rs373056577 within APOA1 and APOA2 genes, respectively with the risk of type 2 diabetes (T2D). In this cross-sectional study, real-time quantitative PCR with specific Taqman probes was used to determine the genotypic and allelic frequencies of rs121912717 and rs373056577 in 300 unrelated Bangladeshi individuals (Healthy = 144, T2D patients = 156). Logistic regression analysis was performed to investigate the association of genotypic and allelic frequencies of these SNPs with respect to T2D under different inheritance models. Neither allelic nor genotypic frequencies of rs121912717 within APOA1 showed any significant association with T2D. Genotypes with respect to rs373056577 within APOA2 showed significant association with the risk of T2D under co-dominant heterozygous model (GG vs GA) [OR (95 %CI): 2.64 (1.32–5.59), p = 0.008], dominant [OR (95 %CI): 2.31 (1.24–4.49), p = 0.01] and over-dominant [OR (95 %CI): 2.62 (1.31–5.53), p = 0.008] models without adjusting for age, gender and BMI. After adjusting for age, gender and BMI, the A allele of rs373056577 showed significant association with T2D only in the dominant model [OR (95 %CI): 3.20 (1.12–10.51), p = 0.04]. Also, A allele of rs373056577 demonstrated significant association with the risk of T2D compared to allele G with [OR (95 %CI): 2.90 (1.15–8.14), p = 0.03] and without adjusting for confounders [OR (95 %CI): 1.97 (1.14–3.52), p = 0.02]. The genotypic frequency was significantly associated with T2D in codominant, dominant, and overdominant models in male participants when a gender-stratified analysis was conducted for rs373056577. However, when the logistic regression analysis was adjusted for age and BMI, the association was not significant in any of the models with respect to rs373056577 for male participants. On the other hand, gender-stratified regression analyses revealed no significant association with T2D before and after adjusting for age and BMI with respect to both allelic and genotypic frequencies of rs121912717. Individuals with CT genotype of rs121912717 had significantly higher triglyceride levels (322.2 mg/dL) compared to those harboring CC genotype (202.8 mg/dL) with or without adjusting for age, gender, BMI and disease status of the study participants. In conclusion, this study revealed that individuals harboring the allele A of rs373056577 possessed an increased risk of developing T2D and individuals having CT genotype of rs121912717 had increased triglyceride levels. The result of this study needs to be validated in a larger cohort for a more robust assessment.</div></div>","PeriodicalId":94141,"journal":{"name":"Metabolism open","volume":"26 ","pages":"Article 100364"},"PeriodicalIF":0.0,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143848248","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Diabetic ketoacidosis treatment outcomes and associated factors among adult diabetic patients in Ethiopia: A systematic review and meta-analysis 埃塞俄比亚成年糖尿病患者的糖尿病酮症酸中毒治疗结果和相关因素:系统回顾和荟萃分析
Metabolism open Pub Date : 2025-03-25 DOI: 10.1016/j.metop.2025.100360
Tsegaamlak Kumelachew Derse , Desalegn Metiku Kidie , Addisu Simachew Asgai , Tadios lidetu , Moges Tadesse Abebe
{"title":"Diabetic ketoacidosis treatment outcomes and associated factors among adult diabetic patients in Ethiopia: A systematic review and meta-analysis","authors":"Tsegaamlak Kumelachew Derse ,&nbsp;Desalegn Metiku Kidie ,&nbsp;Addisu Simachew Asgai ,&nbsp;Tadios lidetu ,&nbsp;Moges Tadesse Abebe","doi":"10.1016/j.metop.2025.100360","DOIUrl":"10.1016/j.metop.2025.100360","url":null,"abstract":"<div><h3>Background</h3><div>Diabetic ketoacidosis is a severe complication of diabetes that can threaten life and has a considerable effect on healthcare systems, especially in developing nations such as Ethiopia. Although it is clinically significant, comprehensive data on the factors that lead to unsatisfactory treatment outcomes in diabetic ketoacidosis patients in Ethiopia are lacking. This review aims to investigate and evaluate unsatisfactory treatment outcomes and multiple contributing factors related to diabetic ketoacidosis among patients with diabetes in Ethiopia. This review seeks to identify these factors to provide insights that can guide improvements in the management and treatment of diabetic patients.</div></div><div><h3>Methods</h3><div>Articles documenting unfavorable treatment outcomes and related aspects of diabetic ketoacidosis among Ethiopian diabetes patients were meticulously sought from various databases, including PubMed/MEDLINE, the Cochrane Library, Science Direct, HINARI, Google Scholar, and gray literature. After the data were extracted, they were imported into Stata software version 17 for analysis. The Cochrane Q test and I<sup>2</sup> statistic were used to evaluate heterogeneity.</div></div><div><h3>Results</h3><div>A total of 580 duplicates were eliminated from the initial set of 1578 papers obtained from PubMed (3), Google Scholar (1,550), HINARI (11), Science Direct (13), and the Cochrane Library (1). The pooled prevalence of poor treatment outcomes for diabetic ketoacidosis was 8 %. Key risk factors for poor treatment outcomes included a Glasgow Coma Scale (GCS) score of less than 15 (POR = 3.16; 95 % CI: 1.52–4.80), sepsis (POR = 2.92; 95 % CI: 1.12–4.72), and comorbidities (POR = 3.66; 95 % CI: 1.64–5.68).</div></div><div><h3>Conclusion</h3><div>The pooled prevalence of poor treatment outcomes of diabetic ketoacidosis in Ethiopia was high. A GCS score of less than 15, sepsis, and comorbidities were identified as significant risk factors for poor treatment outcomes in diabetic ketoacidosis patients. Addressing and minimizing these factors could help reduce the incidence of poor treatment outcomes in diabetic ketoacidosis patients in Ethiopia.</div></div>","PeriodicalId":94141,"journal":{"name":"Metabolism open","volume":"26 ","pages":"Article 100360"},"PeriodicalIF":0.0,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143734849","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Clinical diagnosis, treatment, and genetic analysis of adolescent onset holocarboxylase synthetase deficiency and cobalamin C deficiency: A case report and literature review 青少年发作的全新羧化酶合成酶缺乏症和钴胺素C缺乏症的临床诊断、治疗和遗传分析:1例报告并文献复习
Metabolism open Pub Date : 2025-03-22 DOI: 10.1016/j.metop.2025.100361
Ye Ren , Hongxing Dang , Yueqiang Fu , Chengjun Liu , Jing Li , Jinhua Cai
{"title":"Clinical diagnosis, treatment, and genetic analysis of adolescent onset holocarboxylase synthetase deficiency and cobalamin C deficiency: A case report and literature review","authors":"Ye Ren ,&nbsp;Hongxing Dang ,&nbsp;Yueqiang Fu ,&nbsp;Chengjun Liu ,&nbsp;Jing Li ,&nbsp;Jinhua Cai","doi":"10.1016/j.metop.2025.100361","DOIUrl":"10.1016/j.metop.2025.100361","url":null,"abstract":"<div><h3>Background</h3><div>Holocarboxylase Synthetase Deficiency (HCSD) is an uncommon autosomal recessive genetic disorder that manifests with symptoms such as metabolic acidosis, lethargy, hypotonia, seizures, and persistent rashes, typically emerging during infancy. The HLCS gene has been identified as the source of pathogenic mutations associated with this condition. Cobalamin C (cblC) deficiency is another rare autosomal recessive disorder resulting from defects in cobalamin metabolism, attributable to mutations in the MMACHC gene. This disorder often leads to methylmalonic aciduria and homocystinuria and is classified into early-onset and late-onset types. The late-onset type is characterized by acute or chronic progressive neurological symptoms and behavioral disturbances. To date, there have been no documented cases worldwide of individuals diagnosed with both HCSD and cobalamin C deficiency.</div></div><div><h3>Case presentation</h3><div>This report details the case of an 11-year-and-9-month-old female patient from China who presented with symptoms including vomiting, altered consciousness, and a rash. Laboratory evaluations indicated the presence of metabolic acidosis, methylmalonic aciduria, and homocystinuria. Genetic analysis revealed mutations in the MMACHC gene: c.482G &gt; A (p.R161Q) and c.567dup (p.I190Yfs∗13). Additionally, two previously unreported mutations in the HLCS gene, c.1922G &gt; T (p.G641V) and c.1754C &gt; T (p.P585L), were identified. She was diagnosed with Holocarboxylase Synthetase Deficiency and Cobalamin C deficiency. The child showed significant improvement following treatment with hydroxocobalamin, betaine, and biotin.</div></div><div><h3>Conclusion</h3><div>This article reports a case of adolescent onset HCSD and cobalamin C deficiency. Treatment with hydroxocobalamin, betaine, and biotin is effective. Two novel mutations in the HLCS gene causative for HCSD have been reported, providing a broader foundation for mutational screening and offering insights into the diagnosis and treatment of similar disorders.</div></div>","PeriodicalId":94141,"journal":{"name":"Metabolism open","volume":"26 ","pages":"Article 100361"},"PeriodicalIF":0.0,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143704719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Association of blood manganese levels with non-alcoholic fatty liver disease in NHANES 2017–2020: A retrospective cross-sectional study NHANES 2017-2020中血锰水平与非酒精性脂肪性肝病的关联:一项回顾性横断面研究
Metabolism open Pub Date : 2025-03-21 DOI: 10.1016/j.metop.2025.100358
Qian Xue , Hongju Chen
{"title":"Association of blood manganese levels with non-alcoholic fatty liver disease in NHANES 2017–2020: A retrospective cross-sectional study","authors":"Qian Xue ,&nbsp;Hongju Chen","doi":"10.1016/j.metop.2025.100358","DOIUrl":"10.1016/j.metop.2025.100358","url":null,"abstract":"<div><h3>Objective</h3><div>This study investigates the link between blood manganese (Mn) levels and non-alcoholic fatty liver disease (NAFLD) in a U.S. adult population.</div></div><div><h3>Background</h3><div>The role of manganese in NAFLD remains poorly understood. However, the NHANES database offers valuable data on blood manganese levels and metabolic status for 6278 subjects in the United States, facilitating the study of this relationship.</div></div><div><h3>Methods</h3><div>To investigate the relationship between blood manganese (Mn) levels and NAFLD, we conducted a <em>t</em>-test to compare Mn levels between participants with and without NAFLD. Participants were categorized into quartiles based on their blood Mn levels. We then employed multiple logistic regression analysis and sensitivity analyses to further examine the Mn-NAFLD relationship.</div></div><div><h3>Results</h3><div>The NAFLD group had a significantly higher blood manganese level (10.0 ± 3.7 μg/L, P &lt; 0.05) than the control group. Stratifying 6278 subjects by blood manganese quartiles showed increased NAFLD odds in higher quartiles (Q2-Q4) vs. Q1 (ORs: 1.49, 1.37, 1.49). The Mn-NAFLD relationship followed an inverted L-shaped curve, peaking at 8.52 μg/L.</div></div><div><h3>Conclusions</h3><div>Elevated levels of manganese in the blood have been shown to be associated with an increase in the risk of NAFLD, and blood manganese values can be utilized as a marker for assessing NAFLD.</div></div>","PeriodicalId":94141,"journal":{"name":"Metabolism open","volume":"26 ","pages":"Article 100358"},"PeriodicalIF":0.0,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143704718","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Celastrol targets CKB-mediated futile creatine cycle in human brown adipocytes thermogenesis Celastrol 在人类棕色脂肪细胞产热过程中靶向 CKB 介导的徒劳肌酸循环
Metabolism open Pub Date : 2025-03-20 DOI: 10.1016/j.metop.2025.100359
Jingyi Ni , Baicheng Wang , Xinyue Liu , Rui Yin , Jinlin Tang , Siyu Hua , Xiaoxiao Zhang , Yangyang Wu , Shihu Zhang , Chenbo Ji
{"title":"Celastrol targets CKB-mediated futile creatine cycle in human brown adipocytes thermogenesis","authors":"Jingyi Ni ,&nbsp;Baicheng Wang ,&nbsp;Xinyue Liu ,&nbsp;Rui Yin ,&nbsp;Jinlin Tang ,&nbsp;Siyu Hua ,&nbsp;Xiaoxiao Zhang ,&nbsp;Yangyang Wu ,&nbsp;Shihu Zhang ,&nbsp;Chenbo Ji","doi":"10.1016/j.metop.2025.100359","DOIUrl":"10.1016/j.metop.2025.100359","url":null,"abstract":"<div><div>Celastrol is widely recognized as one of the most potent anti-obesity agents, and its ability to promote adipocyte thermogenesis is thought to be a key mechanism. However, the precise molecular targets through which celastrol modulates thermogenesis in human adipocytes remain unclear. In this study, we synthesized a celastrol-based small molecular probe and employed a combination of photoaffinity labeling (PAL), click chemistry, and Surface Plasmon Resonance (SPR) to identify its direct binding targets. Our results reveal that celastrol directly interacts with creatine kinase B-type (CKB), leading to an increase in CKB protein stability. This suggests that celastrol modulates the futile creatine cycle within human brown adipocytes, thereby contributing to thermogenesis. Collectively, our findings provide new insights into the molecular mechanisms by which celastrol promotes thermogenesis in human brown adipocytes. Notably, we demonstrated that celastrol targets CKB-mediated futile creatine cycle for the first time. These findings not only deepen our understanding of celastrol's role in weight loss but also provides a potential strategy for obesity treatment.</div></div>","PeriodicalId":94141,"journal":{"name":"Metabolism open","volume":"26 ","pages":"Article 100359"},"PeriodicalIF":0.0,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143685345","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Vitamin D supplementation at low (600 IU/day) or higher dose (3,750 IU/day) does not improve insulin resistance markers at one year: A randomized controlled trial 低剂量(600 IU/天)或高剂量(3,750 IU/天)补充维生素 D 一年后并不能改善胰岛素抵抗指标:随机对照试验
Metabolism open Pub Date : 2025-03-11 DOI: 10.1016/j.metop.2025.100357
Nancy Safwan , Christos S. Mantzoros , Maya Rahme , Rafic Baddoura , Georges Halaby , Ghada El-Hajj Fuleihan
{"title":"Vitamin D supplementation at low (600 IU/day) or higher dose (3,750 IU/day) does not improve insulin resistance markers at one year: A randomized controlled trial","authors":"Nancy Safwan ,&nbsp;Christos S. Mantzoros ,&nbsp;Maya Rahme ,&nbsp;Rafic Baddoura ,&nbsp;Georges Halaby ,&nbsp;Ghada El-Hajj Fuleihan","doi":"10.1016/j.metop.2025.100357","DOIUrl":"10.1016/j.metop.2025.100357","url":null,"abstract":"<div><h3>Aims</h3><div>To compare the performance of newer insulin resistance (IR) indices, triglyceride glucose index (TyG) and metabolic score for IR (METS-IR), with previous markers HOMA-IR and McAuley-IR, and assess the impact of one-year of vitamin D supplementation, at two doses, on these indices in overweight, elderly individuals.</div></div><div><h3>Methods</h3><div>Exploratory analyses from a double-blind, multicenter randomized controlled trial involved overweight elderly participants with baseline serum 25-hydroxyvitamin D [25(OH)D] levels of 10–30 ng/ml (clinicaltrial.gov: NCT01315366). Participants received 1000 mg calcium citrate/day and vitamin D supplementation at a low-dose of 600 IU/day, or high-dose of 3750 IU/day.</div></div><div><h3>Results</h3><div>221 participants received low or high-dose vitamin D supplementation. Mean age was 71 ± 5 years, BMI 30 ± 4 kg/m<sup>2</sup>, 25(OH)D 20 ± 7 ng/ml, with 55 % female and 69 % with prediabetes. There were no significant baseline differences except for HDL levels (p = 0.04). TyG was notably increased in the high-dose group (p = 0.02). Mixed linear model analysis showed a greater increase in serum 25(OH)D in the high-dose group compared to the low-dose, with decreases in PTH, cholesterol, and LDL independent of dose. TyG and METS-IR did not differ by dose, time, or dose∗time interaction. Subgroup analyses by sex, baseline 25(OH)D cut-off, and glucose tolerance status were null. <em>Fok</em>I polymorphism showed a significantly greater METS-IR in the high-dose arm, disappeared after adjusting for fat mass. McAuley-IR was the best IR index compared to TyG and METS-IR, both at baseline and 12 months.</div></div><div><h3>Conclusions</h3><div>Vitamin D supplementation at 3750 IU/d over one-year did not improve IR markers, including TyG and METS-IR.</div></div>","PeriodicalId":94141,"journal":{"name":"Metabolism open","volume":"26 ","pages":"Article 100357"},"PeriodicalIF":0.0,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143685201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Remote glucose monitoring and HbA1c improvement among persons with newly diagnosed diabetes mellitus type 2: A multi-center community-based study 新诊断的2型糖尿病患者远程血糖监测和HbA1c改善:一项多中心社区研究
Metabolism open Pub Date : 2025-03-05 DOI: 10.1016/j.metop.2025.100355
Mehreen Khan , Lusine Gigoyan , Mary Reed
{"title":"Remote glucose monitoring and HbA1c improvement among persons with newly diagnosed diabetes mellitus type 2: A multi-center community-based study","authors":"Mehreen Khan ,&nbsp;Lusine Gigoyan ,&nbsp;Mary Reed","doi":"10.1016/j.metop.2025.100355","DOIUrl":"10.1016/j.metop.2025.100355","url":null,"abstract":"<div><h3>Aims</h3><div>Remote monitoring can support patients with Type II diabetes. Still, evidence for improved glucose outcomes in broad community practice patients is extremely limited. We examined remote glucose monitoring in newly diagnosed patients with diabetes to identify its impact on diabetes outcomes.</div></div><div><h3>Methods</h3><div>In a retrospective cohort study of all adults (age 18–75) with newly diagnosed Type II diabetes February 2020–December 2021 in a large integrated health system, we compared HbA1c (units: percentage, %) outcomes in remote monitoring users to non-users in their first year with diabetes, using propensity-weighted analyses.</div></div><div><h3>Results</h3><div>Among 35,958 patients, patients age 45+ (vs. age 18–34), who were Asian/Pacific Islander or Hispanic (compared to White), living in more deprived neighborhoods, not using the patient portal, or with baseline HbA1c ≤ 8 were significantly (p &lt; 0.001) less likely to use remote glucose monitoring. After adjustment, remote monitoring use was associated with a 23 % (95 % CI: 17–29 %) higher rate of reaching the HbA1c ≤ 8 % (vs. non-users). In patients starting with HbA1c &gt; 8, remote glucose monitoring use was associated with 0.93 % greater absolute improvement in HbA1c value (vs. non-users, p &lt; 0.05).</div></div><div><h3>Conclusions</h3><div>Remote glucose monitoring was associated with improved HbA1c among newly diagnosed patients with Type II diabetes.</div></div>","PeriodicalId":94141,"journal":{"name":"Metabolism open","volume":"26 ","pages":"Article 100355"},"PeriodicalIF":0.0,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143610823","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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