Lentinan protects against pancreatic β-cell failure in chronic ethanol consumption-induced diabetic mice via enhancing β-cell antioxidant capacity.

Lentinan protects against pancreatic β-cell failure in chronic ethanol consumption-induced diabetic mice via enhancing β-cell antioxidant capacity.
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香菇多糖通过增强β细胞抗氧化能力,预防慢性乙醇摄入诱导的糖尿病小鼠的胰腺β细胞功能衰竭。

DOI:
10.1111/jcmm.16529
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发表时间:
2021-07
影响因子:
5.3
通讯作者:
Han X
Han X
中科院分区:
医学2区
文献类型:
--
作者:
Wu T;Wang J;Zhang Y;Shao Y;Li X;Guo Y;Dong W;Wang L;Chen F;Han X

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慢性酒精摄入是2型糖尿病(T2DM)的独立危险因素。近年来,越来越多的研究证实,过量乙醇对胰腺β细胞质量和功能有直接的有害影响,这可能是T2DM患者胰腺β细胞衰竭的机制之一。在这项研究中,我们评估了香菇多糖(LNT)对乙醇引起的胰腺β细胞凋亡和功能障碍的影响及其可能的机制。香菇多糖是从香菇中纯化出来的一种活性成分。功能研究表明,LNT可减轻体内慢性乙醇消耗引起的葡萄糖代谢受损。此外,LNT还可以改善慢性乙醇消耗诱导的β细胞功能障碍,其特征是胰岛素合成减少、胰岛素分泌缺陷和细胞凋亡增加。此外,机制分析表明,LNT通过激活Nrf - 2抗氧化途径增强β细胞的抗氧化能力,改善乙醇诱导的氧化应激。我们的研究结果表明,LNT可以防止乙醇诱导的胰腺β细胞功能障碍和凋亡,因此可能是预防与T2DM和应激性糖尿病相关的胰腺β细胞衰竭的潜在药物。
Chronic ethanol consumption is a well‐established independent risk factor for type 2 diabetes mellitus (T2DM). Recently, increasing studies have confirmed that excessive heavy ethanol exerts direct harmful effect on pancreatic β‐cell mass and function, which may be a mechanism of pancreatic β‐cell failure in T2DM. In this study, we evaluated the effect of Lentinan (LNT), an active ingredient purified from the bodies of Lentinus edodes, on pancreatic β‐cell apoptosis and dysfunction caused by ethanol and the possible mechanisms implicated. Functional studies reveal that LNT attenuates chronic ethanol consumption‐induced impaired glucose metabolism in vivo. In addition, LNT ameliorates chronic ethanol consumption‐induced β‐cell dysfunction, which is characterized by reduced insulin synthesis, defected insulin secretion and increased cell apoptosis. Furthermore, mechanistic assays suggest that LNT enhances β‐cell antioxidant capacity and ameliorates ethanol‐induced oxidative stress by activating Nrf‐2 antioxidant pathway. Our results demonstrated that LNT prevents ethanol‐induced pancreatic β‐cell dysfunction and apoptosis, and therefore may be a potential pharmacological agent for preventing pancreatic β‐cell failure associated with T2DM and stress‐induced diabetes.
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