Acute perioperative-stress-induced increase of atherosclerotic plaque volume and vulnerability to rupture in apolipoprotein-E-deficient mice is amenable to statin treatment and IL-6 inhibition

被引：27

作者：

Janssen, Henrike ^{[1
,2
]}

Wagner, Christian S. ^{[1
]}

Demmer, Philipp ^{[1
]}

Callies, Simone ^{[1
]}

Soelter, Gesine ^{[1
]}

Loghmani-khouzani, Houra ^{[1
]}

Hu, Niandan ^{[1
]}

Schuett, Harald ^{[3
]}

Tietge, Uwe J. F. ^{[4
]}

Warnecke, Gregor ^{[5
,6
]}

Larmann, Jan ^{[1
,2
]}

Theilmeier, Gregor ^{[1
,7
]}

机构：

[1] Hannover Med Sch, Dept Anesthesiol & Intens Care Med, D-30625 Hannover, Germany

[2] Heidelberg Univ, Dept Anesthesiol, D-69120 Heidelberg, Germany

[3] Univ Hosp Marburg, Dept Cardiol, D-35043 Marburg, Germany

[4] Univ Groningen, Univ Med Ctr Groningen, Dept Pediat, NL-9700 Groningen, Netherlands

[5] Hannover Med Sch, Dept Cardiothorac Transplant & Vasc Surg, D-30625 Hannover, Germany

[6] German Ctr Lung Res DZL, D-30625 Hannover, Germany

[7] Carl von Ossietzky Univ Oldenburg, Dept Hlth Serv Sci, Fac Med & Hlth Sci 6, D-26129 Oldenburg, Germany

来源：

DISEASE MODELS & MECHANISMS | 2015年 / 8卷 / 09期

关键词：

Atherosclerosis; Perioperative stress; Mouse model; FLUORESCENCE-MEDIATED TOMOGRAPHY; E-KNOCKOUT MOUSE; MYOCARDIAL-INFARCTION; CARDIAC-SURGERY; NONCARDIAC SURGERY; APOE(-/-) MICE; INFLAMMATORY RESPONSE; A-I; LESIONS; INTERLEUKIN-6;

D O I：

10.1242/dmm.018713

中图分类号：

Q2 [细胞生物学];

学科分类号：

071009 ; 090102 ;

摘要：

Myocardial infarction and stroke are frequent after surgical procedures and consume a considerable amount of benefit of surgical therapy. Perioperative stress, induced by surgery, is composed of hemodynamic and inflammatory reactions. The effects of perioperative stress on atherosclerotic plaques are ill-defined. Murine models to investigate the influence of perioperative stress on plaque stability and rupture are not available. We developed a model to investigate the influence of perioperative stress on plaque growth and stability by exposing apolipoprotein-E-deficient mice, fed a high cholesterol diet for 7 weeks, to a double hit consisting of 30 min of laparotomy combined with a substantial blood loss (approximately 20% of total blood volume; 400 mu l). The innominate artery was harvested 72 h after the intervention. Control groups were sham and baseline controls. Interleukin-6 (IL-6) and serum amyloid A (SAA) plasma levels were determined. Plaque load, vascular smooth muscle cell (VSMC) and macrophage content were quantified. Plaque stability was assessed using the Stary score and frequency of signs of plaque rupture were assessed. High-dose atorvastatin (80 mg/kg body weight/day) was administered for 6 days starting 3 days prior to the double hit. A single dose of an IL-6-neutralizing antibody or the fusion protein gp130-Fc selectively targeting IL-6 trans-signaling was subcutaneously injected. IL-6 plasma levels increased, peaking at 6 h after the intervention. SAA levels peaked at 24 h (n=4, P<0.01). Plaque volume increased significantly with the double hit compared to sham (n=8, P<0.01). More plaques were scored as complex or bearing signs of rupture after the double hit compared to sham (n=5-8, P<0.05). Relative VSMC and macrophage content remained unchanged. IL-6-inhibition or atorvastatin, but not blocking of IL-6 trans-signaling, significantly decreased plaque volume and complexity (n=8, P<0.01). Using this model, researchers will be able to further investigate the pathophysiology of perioperative plaque stability, which can result in myocardial infarction, and, additionally, to test potential protective strategies.

引用

页码：1071 / 1080

页数：10