当前位置： SCI文献检索 > JOURNAL OF BIOENERGETICS AND BIOMEMBRANES期刊下所有文献 > α-Lipoic acid ameliorates impaired glucose uptake in LYRM1 overexpressing 3T3-L1 adipocytes through the IRS-1/Akt signaling pathway.

α-Lipoic acid ameliorates impaired glucose uptake in LYRM1 overexpressing 3T3-L1 adipocytes through the IRS-1/Akt signaling pathway.

Abstract：

:Overexpression of the Homo sapiens LYR motif containing 1 (LYRM1) causes mitochondrial dysfunction and induces insulin resistance in 3T3-L1 adipocytes. α-Lipoic acid (α-LA), a dithiol compound with antioxidant properties, improves glucose transport and utilization in 3T3-L1 adipocytes. The aim of this study was to investigate the direct effects of α-LA on reactive oxygen species (ROS) production and insulin sensitivity in LYRM1 overexpressing 3T3-L1 adipocytes and to explore the underlying mechanism. Pretreatment with α-LA significantly increased both basal and insulin-stimulated glucose uptake and insulin-stimulated GLUT4 translocation, while intracellular ROS levels in LYRM1 overexpressing 3T3-L1 adipocytes were decreased. These changes were accompanied by a marked upregulation in expression of insulin-stimulated tyrosine phosphorylation of IRS-1 and serine phosphorylation of Akt following treatment with α-LA. These results indicated that α-LA protects 3T3-L1 adipocytes from LYRM1-induced insulin resistance partially via its capacity to restore mitochondrial function and/or increase phosphorylation of IRS-1 and Akt.

journal_name

J Bioenerg Biomembr

journal_title

Journal of bioenergetics and biomembranes

authors

Qin ZY,Zhang M,Guo XR,Wang YM,Zhu GZ,Ni YH,Zhao YP,Qiu J,Kou CZ,Qin R,Cao XG

doi

10.1007/s10863-012-9460-1

subject

Has Abstract

pub_date

2012-10-01 00:00:00

pages

579-86

issue

5

eissn

0145-479X

issn

1573-6881

journal_volume

44

pub_type

杂志文章

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