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Abstract Title:

Alpha-Lipoic Acid Alleviates Acute Inflammation and Promotes Lipid Mobilization During the Inflammatory Response in White Adipose Tissue of Mice.

Abstract Source:

Lipids. 2016 Aug 16. Epub 2016 Aug 16. PMID: 27531126

Abstract Author(s):

Jun Guo, Shixing Gao, Zhiqing Liu, Ruqian Zhao, Xiaojing Yang

Article Affiliation:

Jun Guo

Abstract:

Recently, white adipose tissue has been shown to exhibit immunological activity, and may play an important role in host defense and protection against bacterial infection.Αlpha-lipoic acid (α-LA) has been demonstrated to function as an anti-inflammatory and anti-oxidant agent. However, its influence on the inflammatory response and metabolic changes in white adipose tissue remains unknown. We used male C57BL/6 mice as models to study the effect of α-LA on the inflammatory response and metabolic changes in white adipose tissue after stimulation with lipopolysaccharide (LPS). The non-esterified fatty acid content was measured by an automatic biochemical analyzer. The expression of inflammation-, lipid- and energy metabolism-related genes and proteins was determined by quantitative real-time polymerase chain reaction and western blotting. The results indicated that α-LA significantly decreased the epididymis fat weight index and the non-esterified fatty acid content in plasma compared with the control group. LPS significantly increased the expression ofinflammation genes and α-LA reduced their expression. The LPS-induced expression of nuclear factor-κB protein was decreased by α-LA. Regarding lipid metabolism, α-LA significantly counteracted the inhibitory effects of LPS on the expression of hormone-sensitive lipase gene and protein. α-LA evidently increased the gene expression of fatty acid transport protein 1 and cluster of differentiation 36. Regarding energy metabolism, α-LA significantly increased the expression of most of mitochondrial DNA-encoded genes compared with the control and LPS group. Accordingly, α-LA can alleviate acute inflammatory response and this action may be related with the promotion of lipid mobilization in white adipose tissue.

Study Type : Animal Study

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