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ALDH2 variants – a role in cardiometabolic syndrome ALDH2变异-在心脏代谢综合征中的作用。
IF 11.9 1区 医学 Q1 ENDOCRINOLOGY & METABOLISM Pub Date : 2025-12-10 DOI: 10.1016/j.metabol.2025.156466
Guanghong Jia , William P. Fay , Christos S. Mantzoros , Michael A. Hill
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引用次数: 0
Corrigendum to “Emerging roles of arginine metabolism in skeletal health and disease” [Metabolism 2025 Nov 19:175:156451. / PMID: 41270967] “精氨酸代谢在骨骼健康和疾病中的新兴作用”的勘误表[代谢2025年11月19:175:156451]。[id: 41270967]
IF 11.9 1区 医学 Q1 ENDOCRINOLOGY & METABOLISM Pub Date : 2025-12-09 DOI: 10.1016/j.metabol.2025.156464
Sibo Wang , Qian Ren , Yansheng Huang , Yibo Ma , Xuefang Zhang , Yuan Liu , Baorong He , Liang Yan
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引用次数: 0
Metabolomic aging clock predicts risk of different cardiovascular diseases in the UK Biobank 代谢组学衰老时钟预测英国生物银行不同心血管疾病的风险
IF 11.9 1区 医学 Q1 ENDOCRINOLOGY & METABOLISM Pub Date : 2025-12-08 DOI: 10.1016/j.metabol.2025.156467
Guochang You , Kangjie Wang , Runnan Shen , Xiong Chen , Jinjin Jiang , Yunhao Sun , Dan Wu , Jiatang Xu , Kai Huang , Chen Yao
Current metabolomic aging clocks inadequately capture individual heterogeneity in biological aging trajectories, constraining their clinical utility. Here, we developed a metabolomic age clock in the UK Biobank (n = 196,790) using a comprehensive panel of 249 plasma metabolites. This framework was trained to predict phenotypic age (PhenoAge), a validated composite biomarker that integrates clinical chemistry across multiple systems, and was evaluated for its utility to predict incident cardiovascular diseases (CVDs) and dementia. We found that this new measure accurately predicted actual PhenoAge (Pearson's r = 0.90) and was significantly associated with the incidence of seven CVDs, including major adverse cardiovascular events, atherosclerotic cardiovascular disease, myocardial infarction, stroke, aortic stenosis, heart failure, and abdominal aortic aneurysm, but not dementia. Furthermore, metabolomic aging was associated with biological, physical, and cognitive age-related phenotypes, comprising telomere length, frailty index, and reaction time. Incorporating the metabolomic age clock with PREVENT (Predicting Risk of CVD Events) risk score modestly improved the performance, as measured by C-statistic and net reclassification index. Genetic analyses revealed 91 genomic loci and 168 genes (e.g., SERPINA1, FADS cluster), with tissue-enrichment analysis highlighting the liver's significant role in metabolic aging. By bridging metabolomic profiles with multisystem aging information, this framework provides a measure of biological aging that is associated with age-related functional status and cardiovascular risk.
目前的代谢组学衰老时钟不能充分捕捉生物衰老轨迹中的个体异质性,限制了它们的临床应用。在这里,我们在英国生物银行(n = 196,790)中使用249种血浆代谢物的综合面板开发了代谢组学年龄时钟。该框架被训练用于预测表型年龄(PhenoAge),表型年龄是一种经过验证的复合生物标志物,整合了多个系统的临床化学成分,并评估了其预测心血管疾病(cvd)和痴呆的实用性。我们发现,这种新的测量方法准确地预测了实际的表型年龄(Pearson’s r = 0.90),并与七种心血管疾病的发病率显著相关,包括主要不良心血管事件、动脉粥样硬化性心血管疾病、心肌梗死、中风、主动脉狭窄、心力衰竭和腹主动脉瘤,但与痴呆无关。此外,代谢组学衰老与生物、物理和认知年龄相关的表型有关,包括端粒长度、脆弱指数和反应时间。通过c统计量和净重分类指数测量,将代谢组年龄时钟与预防(CVD事件预测风险)风险评分相结合,适度提高了表现。遗传分析揭示了91个基因组位点和168个基因(如SERPINA1, FADS簇),组织富集分析强调了肝脏在代谢衰老中的重要作用。通过将代谢组学特征与多系统衰老信息联系起来,该框架提供了一种与年龄相关的功能状态和心血管风险相关的生物衰老测量方法。
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引用次数: 0
Aging and metabolism in HFpEF: Pathophysiology and therapeutic implications HFpEF的衰老和代谢:病理生理学和治疗意义。
IF 11.9 1区 医学 Q1 ENDOCRINOLOGY & METABOLISM Pub Date : 2025-12-04 DOI: 10.1016/j.metabol.2025.156460
Min Ye , Shenghui Feng , Zixuan Xu , Wenfeng He , Chen Liu , Wengen Zhu
Heart failure with preserved ejection fraction (HFpEF) is increasingly recognized as an age-predominant syndrome characterized by diastolic dysfunction despite preserved systolic performance. In the aged myocardium, fatty acid oxidation capacity declines, while glycolytic flux increases; however, impaired pyruvate oxidation limits mitochondrial glucose oxidation, resulting in suboptimal ATP yield per oxygen molecule and worsening energetic inefficiency. Mitochondrial deficits, marked by reduced biogenesis, NAD+ depletion related to reduced sirtuin activity and consequent hyperacetylation of oxidative enzymes, and impaired electron-transport capacity, further diminish bioenergetic reserve and elevate reactive oxygen species generation. Concurrently, inflammaging and proteostatic collapse promote chronic low-grade inflammation, misfolded protein accumulation, and myocardial fibrosis, collectively contributing to increased ventricular stiffness and progressive HFpEF development. Therapeutic strategies targeting these interconnected pathways show considerable promise. Preclinical studies suggest that interventions such as NAD+ precursor supplementation, mTORC1 inhibition, and β-hydroxybutyrate administration can ameliorate HFpEF-like phenotypes by improving mitochondrial efficiency and reducing inflammation. SGLT2 inhibitors and GLP-1 receptor agonists confer clinically proven benefits in HFpEF, likely via systemic metabolic reprogramming toward more oxygen-efficient substrates and attenuation of inflammation. This review underscores the critical role of aging-associated metabolic and mitochondrial derangements in HFpEF pathogenesis and highlights mechanistically tailored interventions as the next frontier in managing this challenging, age-related syndrome.
保留射血分数的心力衰竭(HFpEF)越来越被认为是一种年龄优势综合征,其特征是尽管保留了收缩功能,但舒张功能不全。老年心肌脂肪酸氧化能力下降,糖酵解通量增加;然而,丙酮酸氧化受损限制了线粒体葡萄糖氧化,导致每个氧分子的ATP产量达不到最佳水平,并加剧了能量效率低下。线粒体缺陷,以生物生成减少为特征,与sirtuin活性降低和氧化酶超乙酰化相关的NAD+消耗,以及电子传输能力受损,进一步减少生物能量储备,提高活性氧的产生。同时,炎症和蛋白抑制性塌陷促进慢性低度炎症、错误折叠的蛋白质积累和心肌纤维化,共同导致心室僵硬增加和HFpEF进展。针对这些相互联系的通路的治疗策略显示出相当大的前景。临床前研究表明,补充NAD+前体、抑制mTORC1和β-羟基丁酸盐等干预措施可以通过提高线粒体效率和减少炎症来改善hfpef样表型。SGLT2抑制剂和GLP-1受体激动剂对HFpEF具有临床证实的益处,可能是通过向更高效的底物代谢重编程和炎症衰减。这篇综述强调了衰老相关的代谢和线粒体紊乱在HFpEF发病机制中的关键作用,并强调了机制量身定制的干预措施是管理这一具有挑战性的年龄相关综合征的下一个前沿。
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引用次数: 0
Epicardial adipose tissue produces L-3-hydroxybutyrate in advanced heart failure: direct analysis of fat metabolic remodeling 心外膜脂肪组织在晚期心力衰竭中产生l -3-羟基丁酸:脂肪代谢重塑的直接分析
IF 11.9 1区 医学 Q1 ENDOCRINOLOGY & METABOLISM Pub Date : 2025-12-03 DOI: 10.1016/j.metabol.2025.156465
Martin Riecan , Barbora Judita Kasperova , Michaela Vondrackova , Petra Janovska , Eliska Haasova , Katerina Adamcova , Peter Ivak , Daniel Hlavacek , Katerina Kroupova , Tomas Cajka , Jan Kopecky , Soňa Štemberková Hubáčková , Milos Mraz , Ivan Netuka , Vojtech Melenovsky , Martin Haluzik , Ondrej Kuda

Background

Heart failure (HF) progression involves complex metabolic and multi-organ alterations, but the specific adaptations in adipose tissue are not fully understood.

Aims

We aimed to characterize the metabolic remodeling of epicardial (EAT) and subcutaneous (SAT) adipose tissues in HF with reduced ejection fraction (HFrEF), focusing on lipid metabolism, fatty acid oxidation, and ketogenesis.

Methods

Clinical and metabolomic profiling were performed on metabolically stable controls (n = 34), patients with mild HFrEF (n = 45), and severe HFrEF (n = 129). Metabolomics profiling identified over 800 metabolites in EAT and SAT. Clustering and pathway enrichment analyses defined depot-specific metabolic shifts across HF stages, while gene expression analyses provided mechanistic support.

Results

Advancing HF was associated with declining cardiac function, systemic congestion, and a metabolic shift toward catabolism. Metabolomics revealed depot-specific adaptations: SAT transitioned smoothly to enhanced lipolysis, whereas EAT demonstrated impaired triacylglycerol replenishment and disrupted final turn of β-oxidation spiral. Both depots increased reliance on acylcarnitine degradation and lipolysis; however, EAT was uniquely characterized by late-stage impairment in mitochondrial and peroxisomal fatty acid oxidation, leading to elevation of 3-hydroxybutyrate and hydroxybutyrylcarnitine tissue levels. Ex vivo analyses of EAT explants showed significantly increased fraction of L-3-hydroxybutyrate enantiomer, produced by EAT, compared to D-3-hydroxybutyrate enantiomer originating from the liver.

Conclusions

HF progression drives major, depot-specific metabolic remodeling in adipose tissue. In advanced HF, EAT shows impaired fatty acid oxidation and enhanced local production of L-3-hydroxybutyrate in the vicinity of myocardium, highlighting the close metabolic cooperation in nutrient supply between EAT and the heart muscle through the coronary circulation.
心衰(HF)的进展涉及复杂的代谢和多器官改变,但脂肪组织的特异性适应尚不完全清楚。目的:研究心力衰竭伴射血分数降低(HFrEF)患者心外膜(EAT)和皮下(SAT)脂肪组织的代谢重塑,重点关注脂质代谢、脂肪酸氧化和生酮。方法对代谢稳定对照组(n = 34)、轻度HFrEF患者(n = 45)和重度HFrEF患者(n = 129)进行临床和代谢组学分析。代谢组学分析确定了EAT和SAT中超过800种代谢物。聚类分析和途径富集分析确定了HF阶段的库特异性代谢变化,而基因表达分析提供了机制支持。结果:心衰进展与心功能下降、全身充血和代谢向分解代谢转变有关。代谢组学揭示了储存特异性适应:SAT平稳过渡到增强的脂肪分解,而EAT表现出受损的甘油三酯补充和β-氧化螺旋的最后一轮中断。这两个仓库都增加了对酰基肉碱降解和脂肪分解的依赖;然而,EAT的独特特征是线粒体和过氧化物酶体脂肪酸氧化的晚期损伤,导致3-羟基丁酸盐和羟基丁基肉碱组织水平升高。体外分析表明,与来自肝脏的d -3-羟基丁酸对映体相比,由EAT产生的l -3-羟基丁酸对映体的比例显著增加。结论shf的进展在脂肪组织中驱动主要的、储存特异性的代谢重塑。在晚期HF中,EAT显示心肌附近的脂肪酸氧化受损,l -3-羟基丁酸盐的局部生成增强,突出了EAT与心肌通过冠状动脉循环在营养供应方面的密切代谢合作。
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引用次数: 0
Effect of GLP-1 receptor agonists and co-agonists on atrial fibrillation risk in overweight or obesity: systematic review and meta-analysis of randomized controlled trials GLP-1受体激动剂和协同激动剂对超重或肥胖患者房颤风险的影响:随机对照试验的系统评价和荟萃分析
IF 11.9 1区 医学 Q1 ENDOCRINOLOGY & METABOLISM Pub Date : 2025-12-03 DOI: 10.1016/j.metabol.2025.156463
Paschalis Karakasis , Konstantinos Vlachos , Antonios P. Antoniadis , Konstantinos C. Siontis , Dimitrios Patoulias , Nikolaos Fragakis , Christos S. Mantzoros

Background and aims

Overweight and obesity represent major modifiable determinants of atrial fibrillation (AF) incidence and arrhythmia outcomes after AF ablation therapy. Glucagon-like peptide-1 receptor agonists (GLP-1RAs) and their next-generation co-agonists exert potent weight-lowering and cardiometabolic effects and may therefore confer antiarrhythmic effects. This meta-analysis aimed to quantitatively assess the effect of GLP-1–based therapies on the risk of AF among individuals with overweight or obesity.

Methods

A systematic search of Medline, Scopus, and the Cochrane Library was conducted for randomized controlled trials (RCTs) through October 29, 2025. Data were analyzed using random-effects pairwise meta-analysis.

Results

Twenty-four RCTs encompassing 40,694 participants were included. Compared with placebo, treatment with GLP-1RAs or co-agonists resulted in a 18 % relative reduction in AF risk (Risk Ratio = 0.82; 95 % confidence interval, 0.70–0.96; P = 0.012; I2 = 0 %). No significant between-subgroup differences were observed according to agent type (single-, dual-, or triple-receptor agonists), individual compound, baseline BMI category (overweight/obesity vs. obesity alone), diabetes inclusion criteria, trial design [cardiovascular outcomes trial (CVOT) vs. non-CVOT], or administration route (oral vs. subcutaneous). Meta-regression analyses identified no significant effect modification by the magnitude of weight reduction or concomitant SGLT2 inhibitor use.

Conclusions

Among individuals with overweight or obesity, GLP-1RAs and co-agonists were associated with a lower risk of incident AF event. This cardioprotective benefit may, at least in part, operate independently of the magnitude of weight loss.
背景和目的:超重和肥胖是房颤(AF)发病率和房颤消融治疗后心律失常结局的主要可改变决定因素。胰高血糖素样肽-1受体激动剂(GLP-1RAs)及其下一代协同激动剂具有有效的减肥和心脏代谢作用,因此可能具有抗心律失常作用。本荟萃分析旨在定量评估基于glp -1的治疗对超重或肥胖人群房颤风险的影响。方法系统检索截至2025年10月29日的Medline、Scopus和Cochrane图书馆的随机对照试验(RCTs)。数据分析采用随机效应两两荟萃分析。结果共纳入24项随机对照试验,共40,694名受试者。与安慰剂相比,GLP-1RAs或协同激动剂治疗导致AF风险相对降低18%(风险比= 0.82;95%可信区间,0.70-0.96;P = 0.012; I2 = 0%)。根据药物类型(单受体、双受体或三受体激动剂)、单个化合物、基线BMI类别(超重/肥胖vs单独肥胖)、糖尿病纳入标准、试验设计[心血管结局试验(CVOT) vs非CVOT]或给药途径(口服vs皮下),亚组间未观察到显著差异。meta回归分析发现,体重减轻的幅度或同时使用SGLT2抑制剂没有显著的效果改变。结论:在超重或肥胖人群中,GLP-1RAs和协同激动剂与AF事件发生风险较低相关。这种保护心脏的好处,至少在一定程度上,可能与体重减轻的程度无关。
{"title":"Effect of GLP-1 receptor agonists and co-agonists on atrial fibrillation risk in overweight or obesity: systematic review and meta-analysis of randomized controlled trials","authors":"Paschalis Karakasis ,&nbsp;Konstantinos Vlachos ,&nbsp;Antonios P. Antoniadis ,&nbsp;Konstantinos C. Siontis ,&nbsp;Dimitrios Patoulias ,&nbsp;Nikolaos Fragakis ,&nbsp;Christos S. Mantzoros","doi":"10.1016/j.metabol.2025.156463","DOIUrl":"10.1016/j.metabol.2025.156463","url":null,"abstract":"<div><h3>Background and aims</h3><div>Overweight and obesity represent major modifiable determinants of atrial fibrillation (AF) incidence and arrhythmia outcomes after AF ablation therapy. Glucagon-like peptide-1 receptor agonists (GLP-1RAs) and their next-generation co-agonists exert potent weight-lowering and cardiometabolic effects and may therefore confer antiarrhythmic effects. This meta-analysis aimed to quantitatively assess the effect of GLP-1–based therapies on the risk of AF among individuals with overweight or obesity.</div></div><div><h3>Methods</h3><div>A systematic search of Medline, Scopus, and the Cochrane Library was conducted for randomized controlled trials (RCTs) through October 29, 2025. Data were analyzed using random-effects pairwise meta-analysis.</div></div><div><h3>Results</h3><div>Twenty-four RCTs encompassing 40,694 participants were included. Compared with placebo, treatment with GLP-1RAs or co-agonists resulted in a 18 % relative reduction in AF risk (Risk Ratio = 0.82; 95 % confidence interval, 0.70–0.96; <em>P</em> = 0.012; I<sup>2</sup> = 0 %). No significant between-subgroup differences were observed according to agent type (single-, dual-, or triple-receptor agonists), individual compound, baseline BMI category (overweight/obesity vs. obesity alone), diabetes inclusion criteria, trial design [cardiovascular outcomes trial (CVOT) vs. non-CVOT], or administration route (oral vs. subcutaneous). Meta-regression analyses identified no significant effect modification by the magnitude of weight reduction or concomitant SGLT2 inhibitor use.</div></div><div><h3>Conclusions</h3><div>Among individuals with overweight or obesity, GLP-1RAs and co-agonists were associated with a lower risk of incident AF event. This cardioprotective benefit may, at least in part, operate independently of the magnitude of weight loss.</div></div>","PeriodicalId":18694,"journal":{"name":"Metabolism: clinical and experimental","volume":"175 ","pages":"Article 156463"},"PeriodicalIF":11.9,"publicationDate":"2025-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145681147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
FAM83A acts as an amplifier for lipogenic signaling to facilitate the pathogenesis of metabolic dysfunction-associated steatohepatitis FAM83A作为脂肪生成信号的放大器,促进代谢功能障碍相关脂肪性肝炎的发病机制。
IF 11.9 1区 医学 Q1 ENDOCRINOLOGY & METABOLISM Pub Date : 2025-12-01 DOI: 10.1016/j.metabol.2025.156462
Yang Zhou , Yuhang Dai , Mengyao Qin , Yecheng Li , Lunan Shi , Hao Chen , Hui Fan , Yunli Yu , Le Guo , Jing Xiong

Background & aims

Metabolic dysfunction-associated fatty liver disease (MAFLD) and its more severe manifestation, metabolic-associated steatohepatitis (MASH), are intimately linked to disturbances in lipid metabolism. Although downstream signaling pathways of epidermal growth factor receptor (EGFR), including extracellular signal-regulated kinase (ERK) and proto-oncogene serine/threonine kinase (RAF1), exhibited heightened activation during MASH progression, their specific roles and underlying mechanisms in driving MASH pathogenesis remain inadequately elucidated.

Methods

A comprehensive transcriptomic analysis was performed to indentify key genes involved in MAFLD development. Murine models with hepatocyte-specific depletion or overexpression of FAM83A were subjected to either a high-fat diet (HFD) for 8 or 14 weeks to simulate simple steatosis (MAFL) and MASH, respectively, or a choline-deficient high-fat diet (CDAHFD) to accelerate MASH progression.

Results

FAM83A, recognized as a downstream effector of EGFR that activates the ERK signaling pathway, was predominantly expressed in hepatoctyes and upregulated during MASH pathogenesis in both animal models and clinical patients. Hepatocyte-specific FAM83A knockout delayed MASH progression and mitigated hepatic inflammation and fibrosis. Conversely, overexpression of FAM83A exacerbated MASH pathology, evidence by increased lipid accumulation, inflammation and fibrosis. Mechanistically, insulin induces transcriptional expression of FAM83A, which physically bound to RAF1, enhancing its phosphorylation and subsequent ERK signaling activation. Furthermore, FAM83A-mediated upregulatation of lipogenic gene expression and lipogenesis was significantly inhibited by the treatment of RAF1 inhibitor sorafenib or ERK inhibitor PD98059.

Conclusions

FAM83A promotes MASH pathogenesis by interacting with RAF1 to activate ERK signaling, thereby stimulating fatty acid and cholesterol biosynthesis. Targeting this axis may offer therapeutic potential for MASH and metabolic dyslipidemia.
背景与目的:代谢功能障碍相关脂肪性肝病(MAFLD)及其更严重的表现,代谢相关脂肪性肝炎(MASH),与脂质代谢紊乱密切相关。尽管表皮生长因子受体(EGFR)的下游信号通路,包括细胞外信号调节激酶(ERK)和原癌基因丝氨酸/苏氨酸激酶(RAF1),在MASH进展过程中表现出高度激活,但它们在驱动MASH发病机制中的具体作用和潜在机制仍未充分阐明。方法:通过全面的转录组学分析,鉴定参与MAFLD发展的关键基因。具有肝细胞特异性缺失或FAM83A过表达的小鼠模型分别接受8或14 周的高脂肪饮食(HFD)来模拟单纯性脂肪变性(MAFL)和MASH,或接受缺乏胆碱的高脂肪饮食(CDAHFD)来加速MASH进展。结果:FAM83A被认为是EGFR的下游效应因子,激活ERK信号通路,在动物模型和临床患者中,FAM83A主要在肝细胞中表达,并在MASH发病过程中上调。肝细胞特异性FAM83A敲除延迟了MASH进展,减轻了肝脏炎症和纤维化。相反,FAM83A的过表达加重了MASH病理,证据是脂质积累、炎症和纤维化增加。在机制上,FAM83A物理地与RAF1结合,增强其磷酸化和随后的ERK信号激活。此外,fam83a介导的增脂基因表达上调和脂肪生成被RAF1抑制剂索拉非尼或ERK抑制剂PD98059显著抑制。结论:FAM83A通过与RAF1相互作用激活ERK信号,促进MASH发病机制,从而刺激脂肪酸和胆固醇的生物合成。以该轴为靶点可能为治疗MASH和代谢性血脂异常提供治疗潜力。
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引用次数: 0
Unravelling the obesity paradox in cancer: An umbrella review of protective associations and evidence credibility across 13 malignancies 揭开癌症中的肥胖悖论:对13种恶性肿瘤的保护性关联和证据可信度的综合回顾。
IF 11.9 1区 医学 Q1 ENDOCRINOLOGY & METABOLISM Pub Date : 2025-12-01 DOI: 10.1016/j.metabol.2025.156461
Lulin Yu , Jing Yuan , Mingxian Meng , Hejing Pan , Long Ge , Liaoyao Wang , Xuanlin Li

Background

The “obesity paradox” in cancer remains controversial amid inconsistent meta-analyses. This umbrella review re-analyses evidence across 13 malignancies using pre-specified credibility criteria to clarify associations.

Methods

We conducted an umbrella review of systematic reviews and meta-analyses investigating obesity and cancer incidence or prognosis. PubMed, Embase, and Cochrane Library were searched from inception to August 2025. Evidence credibility was graded using the following criteria: statistical significance, heterogeneity, 95 % prediction intervals, small-study effects, excess significance bias, and methodological quality assessment.

Findings

Based on 33 included articles (comprising 145 associations across 13 cancer types), only two associations met the convincing evidence criteria: higher BMI was associated with a reduced incidence of oral cancer (relative risk [RR] = 0.93, 95 % CI: 0.91–0.96), and excess weight was associated with a reduced incidence of lung cancer in the Chinese population (odds ratio [OR] = 0.68, 95 % CI: 0.59–0.79). Highly suggestive evidence has revealed associations in lung cancer (reduced incidence, fewer surgical complications and prolonged cancer-specific survival), breast cancer (reduced incidence and decreased likelihood of lymph node metastasis), renal cell carcinoma (prolonged overall survival) and prostate cancer (prolonged overall survival). Of the remaining associations, 20 were suggestive, 51 weak, and 53 non-significant.

Conclusions

Only 21 (14 %) meta-analyses provided convincing or highly suggestive evidence, demonstrating potential associations of obesity in specific oncological contexts pertaining to both reduced incidence risk and improved prognostic outcomes. This synthesis also highlights critical gaps in current evidence, emphasising the need for standardised adiposity metrics, more prudent stratification, and rigorous methodology.
背景:在不一致的荟萃分析中,癌症中的“肥胖悖论”仍然存在争议。本综述使用预先指定的可信度标准重新分析了13种恶性肿瘤的证据,以澄清相关关系。方法:我们对调查肥胖与癌症发病率或预后的系统综述和荟萃分析进行了综合综述。PubMed, Embase和Cochrane图书馆从成立到2025年8月被检索。使用以下标准对证据可信度进行分级:统计显著性、异质性、95% %预测区间、小研究效应、过度显著性偏差和方法学质量评估。结果:基于纳入的33篇文章(包括13种癌症类型的145个关联),只有两个关联符合令人信服的证据标准:高BMI与口腔癌发病率降低相关(相对风险[RR] = 0.93,95 % CI: 0.91-0.96),超重与中国人群肺癌发病率降低相关(优势比[OR] = 0.68,95 % CI: 0.59-0.79)。极具暗示意义的证据显示,肺癌(发病率降低,手术并发症减少,癌症特异性生存期延长)、乳腺癌(发病率降低,淋巴结转移可能性降低)、肾细胞癌(总生存期延长)和前列腺癌(总生存期延长)与肺癌(总生存期延长)存在关联。在剩下的关联中,20个具有暗示性,51个较弱,53个不显著。结论:只有21项(14% %)荟萃分析提供了令人信服或高度暗示的证据,证明肥胖在特定肿瘤背景下与降低发病率风险和改善预后结果有关的潜在关联。这一综合也强调了当前证据的关键差距,强调需要标准化的肥胖指标,更谨慎的分层和严格的方法。
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引用次数: 0
Meteorin-like protein inhibits vascular smooth muscle cell-derived foam cell formation and atherosclerosis via KIT- endoplasmic reticulum stress signaling 流星蛋白样蛋白通过KIT-内质网应激信号抑制血管平滑肌细胞衍生泡沫细胞形成和动脉粥样硬化。
IF 11.9 1区 医学 Q1 ENDOCRINOLOGY & METABOLISM Pub Date : 2025-11-29 DOI: 10.1016/j.metabol.2025.156459
Xu Chen , Xueying Jiang , Siyu Hou , Fengling Lai , Keqing Hu , Jie Li , Ting Yang , Xinxin Shen , Huimin Chen , Shen Chen , Xianfei Guo , Yan Zheng , Tao Xu , Guohai Su , Rong Huang

Objective

Vascular smooth muscle cell (VSMC)-derived foam cell formation is a major contributor to atherosclerosis progression and plaque instability. Meteorin-like protein (METRNL), a secreted organokine with known metabolic and anti-inflammatory effects, has been linked to cardiovascular protection, but its role in atherosclerosis is not well defined. This study investigated the function of METRNL in VSMC-derived foam cell formation and atherosclerosis and explored the underlying signaling mechanisms.

Methods

ApoE−/− mice were used to investigate the role of METRNL in atherosclerosis. VSMC-derived foam cell formation was evaluated in human VSMC treated with oxidized LDL with or without METRNL supplementation.

Results

METRNL levels declined during atherosclerosis progression and were restored during regression. METRNL selectively inhibited foam cell formation in VSMCs—but not in macrophages—by downregulating CD36-mediated cholesterol uptake and suppressing endoplasmic reticulum stress through KIT signaling. Deletion of KIT specifically in smooth muscle cells abolished these protective effects. The transcription factor SP1 was found to bind directly to the METRNL promoter and enhance its expression. Clinically, lower serum METRNL levels were independently associated with increased risk and severity of acute coronary syndrome.

Conclusion

METRNL protects against VSMC foam cell formation and atherosclerosis by enhancing KIT signaling, thereby reducing ER stress and subsequent cholesterol uptake. These findings position METRNL as a potential therapeutic target and biomarker for atherosclerotic cardiovascular disease.
目的:血管平滑肌细胞(VSMC)衍生泡沫细胞的形成是动脉粥样硬化进展和斑块不稳定的主要因素。流星蛋白样蛋白(METRNL)是一种已知具有代谢和抗炎作用的分泌性器官因子,与心血管保护有关,但其在动脉粥样硬化中的作用尚未明确。本研究探讨了METRNL在vsmc衍生泡沫细胞形成和动脉粥样硬化中的作用,并探讨了其潜在的信号机制。方法:采用ApoE-/-小鼠实验,研究METRNL在动脉粥样硬化中的作用。用氧化LDL加或不加METRNL处理的人VSMC,评估VSMC衍生泡沫细胞的形成。结果:METRNL水平在动脉粥样硬化过程中下降,在回归过程中恢复。METRNL通过下调cd36介导的胆固醇摄取和通过KIT信号抑制内质网应激,选择性地抑制vsmcs中的泡沫细胞形成,而不是巨噬细胞。在平滑肌细胞中特异性地删除KIT会消除这些保护作用。转录因子SP1可直接与METRNL启动子结合,增强其表达。在临床上,较低的血清METRNL水平与急性冠状动脉综合征的风险和严重程度增加独立相关。结论:METRNL通过增强KIT信号,从而减少内质网应激和随后的胆固醇摄取,从而防止VSMC泡沫细胞形成和动脉粥样硬化。这些发现将METRNL定位为动脉粥样硬化性心血管疾病的潜在治疗靶点和生物标志物。
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引用次数: 0
Molecular code of ferroptosis: emerging multi-dimensional modifications and therapeutic targets in hepatic disorders 铁下垂的分子密码:在肝脏疾病中出现的多维修饰和治疗靶点
IF 11.9 1区 医学 Q1 ENDOCRINOLOGY & METABOLISM Pub Date : 2025-11-26 DOI: 10.1016/j.metabol.2025.156457
Xiaotong Cai , Yinhao Zhang , Wenqing Qin , Xiaojiaoyang Li
Ferroptosis, a distinct form of iron-dependent cell death characterized by lipid peroxidation, has emerged as a pivotal regulator in the pathogenesis of liver diseases. It functions both as a driver of hepatocyte injury in chronic liver disorders and as a therapeutic vulnerability in hepatocellular carcinoma. This review provides a comprehensive analysis of the regulatory networks of ferroptosis, shaped by both epigenetic and post-translational modifications. Specifically, we detailed how RNA and DNA methylation, non-coding RNAs, histone acetylation and post-translational modifications dynamically modulated the expression, stability and activity of ferroptosis-related molecules, especially for glutathione peroxidase 4, solute carrier family 7 member 11, acyl-CoA synthetase long-chain family member 4 and transferrin receptor 1. By dissecting these multilayered regulatory mechanisms, we delineated how distinct modifications operated, either promoting or suppressing ferroptosis across various liver diseases. Furthermore, we summarized recent advances in therapeutic interventions targeting ferroptosis-related pathways, including their pharmacological mechanisms, efficacy in preclinical models and limitations in clinical translation. Special emphasis was also placed on the complexity of modifications, disease-stage specificity and the topology of modification sites in shaping ferroptosis sensitivity. Collectively, this review highlights ferroptosis as a dynamic and therapeutically actionable within liver pathology and underscores the potential of targeting regulatory modifications to refine strategies for disease intervention.
铁中毒是一种以脂质过氧化为特征的铁依赖性细胞死亡的独特形式,已成为肝脏疾病发病机制中的关键调节因子。它在慢性肝脏疾病中作为肝细胞损伤的驱动因素,在肝细胞癌中作为治疗易感性。这篇综述提供了对铁下垂的调控网络的全面分析,由表观遗传和翻译后修饰形成。具体而言,我们详细介绍了RNA和DNA甲基化,非编码RNA,组蛋白乙酰化和翻译后修饰如何动态调节与铁凋亡相关分子的表达,稳定性和活性,特别是谷胱甘肽过氧化物酶4,溶质载体家族7成员11,酰基辅酶a合成酶长链家族成员4和转铁蛋白受体1。通过剖析这些多层调控机制,我们描述了不同的修饰如何起作用,促进或抑制各种肝脏疾病的铁下垂。此外,我们总结了针对铁中毒相关途径的治疗干预措施的最新进展,包括其药理机制、临床前模型的疗效和临床转化的局限性。特别强调还放在修饰的复杂性,疾病阶段的特异性和修饰位点的拓扑结构在形成铁下垂敏感性。总的来说,这篇综述强调了铁下垂在肝脏病理中是一种动态的、可治疗的疾病,并强调了靶向调节修改以完善疾病干预策略的潜力。
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Metabolism: clinical and experimental
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