The Korean Journal of Physiology and Pharmacology

The Korean Society of Pharmacology (대한약리학회)
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Effects of Local Pancreatic Renin-Angiotensin System on the Microcirculation of Rat with Severe Acute Pancreatitis

  • Pan, Zhijian (Department of Gastroenterology Surgery, The Central Hospital of Wuhan, Tongji Medical College Huazhong University of Science & Technology) ;
  • Feng, Ling (Department of gynecology and obstetrics, Fifth Hospital of Wuhan) ;
  • Long, Haocheng (Department of General Surgery, Fifth Hospital of Wuhan) ;
  • Wang, Hui (Department of Gastroenterology Surgery, The Central Hospital of Wuhan, Tongji Medical College Huazhong University of Science & Technology) ;
  • Feng, Jiarui (Department of General Surgery, Fifth Hospital of Wuhan) ;
  • Chen, Feixiang (Department of General Surgery, Fifth Hospital of Wuhan)
  • Received : 2014.04.15
  • Accepted : 2014.12.02
  • Published : 2015.07.01
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Abstract

Severe acute pancreatitis (SAP) is normally related to multiorgan dysfunction and local complications. Studies have found that local pancreatic renin-angiotensin system (RAS) was significantly upregulated in drug-induced SAP. The present study aimed to investigate the effects of angiotensin II receptors inhibitor valsartan on dual role of RAS in SAP in a rat model and to elucidate the underlying mechanisms. 3.8% sodium taurocholate (1 ml/kg) was injected to the pancreatic capsule in order for pancreatitis induction. Rats in the sham group were injected with normal saline in identical locations. We also investigated the regulation of experimentally induced SAP on local RAS expression in the pancreas through determination of the activities of serum amylase, lipase and myeloperoxidase, histological and biochemical analysis, radioimmunoassay, fluorescence quantitative PCR and Western blot analysis. The results indicated that valsartan could effectively suppress the local RAS to protect against experimental acute pancreatitis through inhibition of microcirculation disturbances and inflammation. The results suggest that pancreatic RAS plays a critical role in the regulation of pancreatic functions and demonstrates application potential as AT1 receptor antagonists. Moreover, other RAS inhibitors could be a new therapeutic target in acute pancreatitis.

Keywords

References

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