p53-Induced Adipose Tissue Inflammation Is Critically Involved in the Development of Insulin Resistance in Heart Failure

被引：159

作者：

Shimizu, Ippei ^{[1
]}

Yoshida, Yohko ^{[1
]}

Katsuno, Taro ^{[1
]}

Tateno, Kaoru ^{[1
]}

Okada, Sho ^{[1
]}

Moriya, Junji ^{[1
]}

Yokoyama, Masataka ^{[1
]}

Nojima, Aika ^{[1
]}

Ito, Takashi ^{[1
]}

Zechner, Rudolf ^{[2
]}

Komuro, Issei ^{[3
]}

Kobayashi, Yoshio ^{[1
]}

Minamino, Tohru ^{[1
,4
]}

机构：

[1] Chiba Univ, Grad Sch Med, Dept Cardiovasc Sci & Med, Chiba 2608670, Japan

[2] Graz Univ, Inst Mol Biosci, A-8010 Graz, Austria

[3] Osaka Univ, Sch Med, Dept Cardiovasc Med, Suita, Osaka 5650871, Japan

[4] Japan Sci & Technol Agcy, PRESTO, Kawaguchi, Saitama 3320012, Japan

来源：

CELL METABOLISM | 2012年 / 15卷 / 01期

关键词：

EUROPEAN TRIAL COMET; ENERGY-METABOLISM; MUTANT MICE; P53; DISEASE; CELL; CARVEDILOL; HYPERTROPHY; DYSFUNCTION; ACTIVATION;

D O I：

10.1016/j.cmet.2011.12.006

中图分类号：

Q2 [细胞生物学];

学科分类号：

071009 ; 090102 ;

摘要：

Several clinical studies have shown that insulin resistance is prevalent among patients with heart failure, but the underlying mechanisms have not been fully elucidated. Here, we report a mechanism of insulin resistance associated with heart failure that involves upregulation of p53 in adipose tissue. We found that pressure overload markedly upregulated p53 expression in adipose tissue along with an increase of adipose tissue inflammation. Chronic pressure overload accelerated lipolysis in adipose tissue. In the presence of pressure overload, inhibition of lipolysis by sympathetic denervation significantly downregulated adipose p53 expression and inflammation, thereby improving insulin resistance. Likewise, disruption of p53 activation in adipose tissue attenuated inflammation and improved insulin resistance but also ameliorated cardiac dysfunction induced by chronic pressure overload. These results indicate that chronic pressure overload upregulates adipose tissue p53 by promoting lipolysis via the sympathetic nervous system, leading to an inflammatory response of adipose tissue and insulin resistance.

引用

页码：51 / 64

页数：14

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