Huang YL, Yin Q, Yan Q, Deng MM. Protective effects of aliskiren, a direct renin inhibitor, in rats with acute pancreatitis.
Shijie Huaren Xiaohua Zazhi 2014;
22:1841-1847. [DOI:
10.11569/wcjd.v22.i13.1841]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the inhibitory effects of aliskiren on the renin angiotensin system (RAS) in rats with acute pancreatitis (AP) and to explore the mechanisms involved.
METHODS: Seventy-two SD rats were randomly divided into a sham operation group, an acute AP model group, and an aliskiren therapy group. AP was induced by retrograde injection of 3.5% sodium taurocholate (0.1 mL/100 g) into the biliopancreatic duct. Aliskiren solution was administered in rats of the aliskiren therapy group by gavage at a dose of 20 mg/kg, and equivalent volume of normal saline (NS) was given in the other two groups. Rats in each group were further divided into three subgroups for taking inferior vena cava blood samples at 6, 12 and 24 h, respectively. The rats were then killed to observe pancreatic pathological changes and measure serum amylase (AMY), tumor necrosis factor-α (TNF-α), angiotensin Ⅱ (Ang Ⅱ), and plasma renin activity (PRA). The expression of nuclear factor kappa-B (NF-kB) and angiotensin Ⅱ type 1 receptor (AT1R) in the pancreas was determined by immunohistochemistry.
RESULTS: Compared with the AP group, pancreatic histopathological score (7.25 ± 0.80, 9.57 ± 1.54, 12.75 ± 1.22), AMY (2230.87 U/L ± 224.71 U/L, 2137.41 U/L ± 193.31 U/L, 2457.01 U/L ± 188.81 U/L), TNF-α (26.28 ng/L ± 2.45 ng/L, 27.51 ng/L ± 1.91 ng/L, 27.17 ng/L ± 2.02 ng/L), PRA [7.31 ng/(mL•h) ± 1.94 ng/(mL•h), 8.69 ng/(mL•h) ± 1.78 ng/(mL•h), 9.04 ng/(mL•h) ± 1.78 ng/(mL•h)], Ang Ⅱ (755.47 ng/L ± 121.33 ng/L, 871.17 ng/L ± 129.43 ng/L, 878.39 ng/L ± 81.29 ng/L), positive rates of AT1R (48.60 ± 6.28, 49.62 ± 7.19, 51.20 ± 7.04) and NF-κB (65.66 ± 4.93, 68.66 ± 5.23, 68.13 ± 7.14) at each time point (6, 12, 24 h) were decreased significantly (P < 0.05 for all) in the aliskiren therapy group.
CONCLUSION: Aliskiren can protect from pancreatic inflammation and injury in AP rats.
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