...
首页> 外文期刊>Cell metabolism >Pimozide Alleviates Hyperglycemia in Diet-Induced Obesity by Inhibiting Skeletal Muscle Ketone Oxidation
【24h】

Pimozide Alleviates Hyperglycemia in Diet-Induced Obesity by Inhibiting Skeletal Muscle Ketone Oxidation

机译:Pimozide通过抑制骨骼肌酮氧化来减轻饮食诱导的肥胖症的高血糖症

获取原文
获取原文并翻译 | 示例
           

摘要

Perturbations in carbohydrate, lipid, and protein metabolism contribute to obesity- induced type 2 diabetes (T2D), though whether alterations in ketone body metabolism influence T2D pathology is unknown. We report here that activity of the rate-limiting enzyme for ketone body oxidation, succinyl-CoA:3-ketoacid-CoA transferase (SCOT/Oxct1), is increased in muscles of obese mice. We also found that the diphenylbutylpiperidine pimozide, which is approved to suppress tics in individuals with Tourette syndrome, is a SCOT antagonist. Pimozide treatment reversed obesity-induced hyperglycemia in mice, which was phenocopied in mice with muscle-specific Oxct1/SCOT deficiency. These actions were dependent on pyruvate dehydrogenase (PDH/Pdha1) activity, the rate-limiting enzyme of glucose oxidation, as pimozide failed to alleviate hyperglycemia in obese mice with a muscle-specific Pdha1/PDH deficiency. This work defines a fundamental contribution of enhanced ketone body oxidation to the pathology of obesity-induced T2D, while suggesting pharmacological SCOT inhibition as a new class of anti-diabetes therapy.
机译:碳水化合物、脂质和蛋白质代谢的紊乱可导致肥胖诱导的2型糖尿病(T2D),但酮体代谢的改变是否会影响T2D病理尚不清楚。我们在此报告,在肥胖小鼠的肌肉中,酮体氧化限速酶琥珀酰辅酶A:3-酮酸辅酶A转移酶(SCOT/Oxct1)的活性增加。我们还发现,被批准用于抑制抽动秽语综合征患者抽搐的二苯基丁基哌啶吡莫嗪是一种SCOT拮抗剂。吡莫嗪治疗逆转了肥胖诱导的小鼠高血糖症,这在肌肉特异性Oxct1/SCOT缺乏的小鼠中表现出来。这些作用依赖于丙酮酸脱氢酶(PDH/Pdha1)活性,这是葡萄糖氧化的限速酶,因为吡莫唑未能缓解肌肉特异性Pdha1/PDH缺乏的肥胖小鼠的高血糖。这项工作定义了酮体氧化增强对肥胖诱导的T2D病理学的基本贡献,同时建议将药物SCOT抑制作为一种新的抗糖尿病疗法。

著录项

相似文献

  • 外文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号