Stress Augments Insulin Resistance and Prothrombotic State
Role of Visceral Adipose-Derived Monocyte Chemoattractant Protein-1
- Yasuhiro Uchida1,
- Kyosuke Takeshita1,2⇓,
- Koji Yamamoto3,
- Ryosuke Kikuchi1,
- Takayuki Nakayama4,
- Mieko Nomura3,
- Xian Wu Cheng1,
- Kensuke Egashira5,
- Tadashi Matsushita3,
- Hideo Nakamura6 and
- Toyoaki Murohara1
- 1Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
- 2Department of Clinical Laboratory, Nagoya University Hospital, Nagoya, Japan
- 3Department of Blood Transfusion, Nagoya University Hospital, Nagoya, Japan
- 4Department of Hematology, Nagoya University Graduate School of Medicine, Nagoya, Japan
- 5Department of Cardiovascular Medicine, Kyushu University Graduate School of Medicine, Fukuoka, Japan;
- 6Department of Pathology, Nagoya University Hospital, Nagoya, Japan.
- Corresponding author: Kyosuke Takeshita, kyousuke{at}med.nagoya-u.ac.jp.
Abstract
Stressors contribute to thrombosis and insulin resistance. Since obesity-related adipose inflammation is also involved in these pathological states, we assumed that stress correlates with adipose inflammation. Male mice were subjected to 2-week intermittent restraint stress. Expression of plasma lipids, monocyte/macrophage markers (CD11b, CD68, and F4/80), proinflammatory cytokines (monocyte chemoattractant protein-1 [MCP-1], tumor necrosis factor-α, and interleukin-6), adiponectin, heat shock protein 70.1 (HSP70.1), and coagulation factors (plasminogen activation inhibitor-1 [PAI-1] and tissue factor [TF]) in blood and inguinal white adipose tissue (WAT) was determined using immunohistochemistry, enzyme-linked immunosorbent assay, and RT-PCR, respectively. Glucose metabolism was assessed by glucose tolerance tests (GTTs) and insulin tolerance tests, and expression of insulin receptor substrate-1 (IRS-1) and glucose transporter 4 (GLUT4) in WAT. To examine effects of MCP-1 blockade, animals were treated with control or neutralizing antibody, or transplanted with control or 7ND (dominant-negative form of MCP-1)-overexpressing adipose-derived stromal cells (ADSCs). Stress increased monocyte accumulation, free fatty acids, proinflammatory cytokine, and HSP70.1 and reduced adiponectin. Adipose stromal cells highly expressed MCP-1. The stress-induced adipose inflammation increased PAI-1 and TF but did not give rise to thrombus formation. Without any changes in GTT, stress worsened insulin sensitivity and decreased IRS-1 and GLUT4 in WAT. Neutralizing antibody and 7ND-ADSCs reversed stress-induced adipose inflammation, procoagulant state, and insulin resistance. Stress evoked adipose inflammation to increase coagulation factors and impair insulin sensitivity through adipose-derived MCP-1.
Footnotes
-
This article contains Supplementary Data online at http://diabetes.diabetesjournals.org/lookup/suppl/doi:10.2337/db11-0828/-/DC1.
- Received June 20, 2011.
- Accepted February 7, 2012.
- © 2012 by the American Diabetes Association.
Readers may use this article as long as the work is properly cited, the use is educational and not for profit, and the work is not altered. See http://creativecommons.org/licenses/by-nc-nd/3.0/ for details.














