Atrial natriuretic peptide reduces hepatic ischemiaeperfusion injury in rabbits

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• 作者：Takashige Yamada (1)
  Yoshifumi Kotake (2)
  Hiromasa Nagata (1)
  Junzo Takeda (1)
  
• 关键词：Atrial natriuretic peptide ; Ischemiaeperfusion ; Liver injury ; Tissue microvascular blood flow
• 刊名：Journal of Anesthesia
• 出版年：2013
• 出版时间：December 2013
• 年：2013
• 卷：27
• 期：6
• 页码：901-908
• 全文大小：
• 作者单位：Takashige Yamada (1)
  Yoshifumi Kotake (2)
  Hiromasa Nagata (1)
  Junzo Takeda (1)
  
  1. Department of Anesthesiology, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku, Tokyo, 160-8582, Japan
  2. Department of Anesthesiology, Toho University Ohashi Medical Center, Tokyo, Japan
  
• ISSN：1438-8359

文摘

Purpose Atrial natriuretic peptide (ANP) has been known to be protective against hepatic ischemia/reperfusion injury. The purpose of this study was to verify the hypothesis that ANP conserves microvascular circulation and reduces ischemiaeperfusion injury in the in vivo rabbit model. Methods With IRB approval, 30 male Japanese white rabbits under pentobarbital anesthesia were studied. These animals were randomly assigned to the following three groups (n=10 each): control, ANP, and sham group. Animals in the ANP group received continuous infusion of ANP at 0.1/kg/min throughout the study period. Animals in control and ANP groups underwent 90min of partial hepatic ischemia by clamping the right hepatic artery and portal vein. Descending aortic blood flow (AoF) was monitored with a transit-time ultrasound flowmeter. Hepatic tissue microvascular blood flow (HTBF) at both right (ischemic) and left (nonischemic) lobe was intermittently evaluated with the hydrogen clearance method. After 180min of reperfusion, hepatic injury was determined with serum AST and ALT. Galactose clearance of reperfused right lobe was also measured as an indicator of hepatic metabolic function. Histopathological change and the number of apoptotic hepatocytes were also evaluated. Results Systemic hemodynamic data including mean arterial pressure, heart rate, and AoF did not differ among the three groups during the study period. ANP attenuated ischemia-induced right HTBF decrease. ANP also suppressed histopathological degeneration, apoptosis, and decline in galactose clearance after reperfusion. Conclusions ANP attenuated hepatic microvascular dysfunction and hepatocyte injury after reperfusion without significant hemodynamic change.