減肥對2型糖尿病的作用
作者:
小柯機器人發布時間:2019/12/20 16:34:44
英國紐卡斯爾大學Roy Taylor和Ahmad Al-Mrabeh合作探究了2型糖尿病患者減肥後,其肝脂蛋白輸出與糖尿病緩解的關係。該項研究成果在線發表在2019年12月19日的《細胞—代謝》上。
在糖尿病緩解臨床試驗亞組中,研究人員發現肝VLDL1-甘油三酯的產率和VLDL1-棕櫚酸含量對胰腺內脂肪變化和恢復第一階段胰島素反應的關係。2型糖尿病患者體重減輕後,其肝臟脂肪、VLDL1-甘油三酯的產量和胰內脂肪減少,並可維持24個月。第一階段胰島素反應增加僅發生在穩定緩解的糖尿病患者中。與24個月緩解的患者相比,初次緩解後復發的患者其VLDL1-甘油三酯和VLDL1-棕櫚酸的含量增加更快,胰腺內脂肪重新積累,並在24個月時失去第一階段反應。因此,研究人員在時間上建立了VLDL1-甘油三酯產生、棕櫚酸通量、胰內脂肪和β細胞功能之間的聯繫。該研究揭示與體重有關的脂肪代謝紊亂似乎會推動2型糖尿病的發展和逆轉。
據悉,目前尚不清楚肝脂蛋白代謝在食源緩解的2型糖尿病患者中所起的作用。
附:英文原文
Title: Hepatic Lipoprotein Export and Remission of Human Type 2 Diabetes after Weight Loss
Author: Ahmad Al-Mrabeh, Sviatlana V. Zhyzhneuskaya, Carl Peters, Alison C. Barnes, Shaden Melhem, Aaron Jesuthasan, Benjamin Aribisala, Kieren G. Hollingsworth, Georg Lietz, John C. Mathers, Naveed Sattar, Michael E.J. Lean, Roy Taylor
Issue&Volume: December 19, 2019
Abstract: The role of hepatic lipoprotein metabolism in diet-induced remission of type 2 diabetesis currently unclear. Here, we determined the contributions of hepatic VLDL1-triglycerideproduction rate and VLDL1-palmitic acid content to changes in intra-pancreatic fatand return of first phase insulin response in a subgroup of the Diabetes RemissionClinical Trial. Liver fat, VLDL1-triglyceride production, and intra-pancreatic fatdecreased after weight loss and remained normalized after 24 months of remission.First-phase insulin response remained increased only in those maintaining diabetesremission. Compared with those in remission at 24 months, individuals who relapsedafter initial remission had a greater rise in the content of VLDL1-triglyceride andVLDL1-palmitic acid, re-accumulated intra-pancreatic fat, and lost first-phase responseby 24 months. Thus, we observed temporal relationships between VLDL1-triglycerideproduction, hepatic palmitic acid flux, intra-pancreatic fat, and β-cell function.Weight-related disordered fat metabolism appears to drive development and reversalof type 2 diabetes.
DOI: 10.1016/j.cmet.2019.11.018
Source: https://www.cell.com/cell-metabolism/fulltext/S1550-4131(19)30662-X