{"title":"CKD-Induced Oxidative Twitch Muscle Atrophy Is Mediated by TGF- β.","authors":"Kyoka Homma, Yuki Enoki, Kazuaki Taguchi, Kazuaki Matsumoto","doi":"10.34067/KID.0000000852","DOIUrl":null,"url":null,"abstract":"","PeriodicalId":17882,"journal":{"name":"Kidney360","volume":" ","pages":"1438-1447"},"PeriodicalIF":3.0000,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12483047/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Kidney360","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.34067/KID.0000000852","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/6/4 0:00:00","PubModel":"Epub","JCR":"Q1","JCRName":"UROLOGY & NEPHROLOGY","Score":null,"Total":0}
引用次数: 0
转化生长因子-β介导ckd诱导的氧化性抽搐肌萎缩。
背景:了解慢性肾脏疾病(CKD)中肾损害进展和骨骼肌萎缩的恶性循环是至关重要的。因此,本研究旨在探讨转化生长因子-β (TGF-β)在CKD骨骼肌萎缩中的促进作用。方法:采用2/3肾切除术和单侧输尿管结扎联合模型,如我们之前报道的,用于CKD小鼠。评估骨骼肌重量和骨骼肌纤维抽搐类型的变化。使用C2C12细胞(一种骨骼肌成肌细胞系),鉴定了CKD中诱导IIa型肌纤维减少的分子。将鉴定的分子TGF-β给予小鼠,以研究其对肌纤维类型变化的影响。此外,我们还评估了TGF-β抑制剂对CKD小鼠的影响。结果:在CKD小鼠中,肌球蛋白重链(MyHC)特异性抗体免疫染色显示萎缩的MyHC IIa(氧化抽搐)肌纤维增加。CKD小鼠血清优先诱导C2C12细胞MyHC IIa纤维萎缩。TGF-β处理小鼠的氧化代谢骨骼肌和氧化IIa型纤维水平降低,与CKD小鼠相似。此外,TGF-β抑制剂治疗可防止ckd相关的氧化IIa型肌纤维大小减少和运动能力降低。结论:上述结果提示TGF-β通过降低氧化代谢,诱导IIa型纤维萎缩导致CKD骨骼肌退化。此外,我们的研究结果强调,逆转CKD中受损的MyHC表型是CKD诱导的肌肉萎缩的潜在治疗靶点。
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