The protective effects of rutaecarpine on acute pancreatitis

Yan,Lu; Li,Qing‑Fu; Rong,Yan‑Ting; Chen,Yong‑Heng; Huang,Zhao‑Hong; Wang,Zhi‑Zhi; Peng,Jie

doi:10.3892/ol.2017.7659

The protective effects of rutaecarpine on acute pancreatitis

Authors:
- Lu Yan
- Qing‑Fu Li
- Yan‑Ting Rong
- Yong‑Heng Chen
- Zhao‑Hong Huang
- Zhi‑Zhi Wang
- Jie Peng
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Affiliations: Department of Gastroenterology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China, Key Laboratory of Cancer Proteomics of Chinese Ministry of Health, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
Published online on: December 20, 2017 https://doi.org/10.3892/ol.2017.7659
Pages: 3121-3126

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Abstract

Acute pancreatitis (AP) is the acute inflammation of the pancreas. The morbidity of AP has increased in recent years. Certain patients eventually develop severe AP (SAP), which rapidly progresses to multiple organ dysfunction; the incidence of this occurring in patients with AP is 20‑30%. To date, no specific drugs or methods exist to treat this disease. Rutaecarpine relaxes vascular smooth muscle by stimulating calcitonin gene‑related peptide (CGRP) release via activation of vanilloid receptor subtype 1 (VR1). It has been demonstrated that rutaecarpine induces a therapeutic effect on SAP. The present study was conducted to characterize the molecular mechanisms underlying the protective effects of rutaecarpine against AP using a rat model of AP. Gross pathological changes of the pancreas, as well as the pancreatic tissue histopathological score, were assessed following treatment with rutaecarpine, capsazepine or a combination of the two. Serum amylase activity was detected using an automatic biochemistry analyzer. Changes in the serum concentrations of interleukin (IL)‑6, tumor necrosis factor (TNF‑α), IL‑10 and CGRP were assessed by ELISA and radioimmunoassay. The results demonstrated that pre‑treatment with rutaecarpine markedly decreased pancreatic inflammation and necrosis, reduced the volume of ascites, and significantly increased the plasma concentration of CGRP and the serum concentration of IL‑10, an anti‑inflammatory cytokine. However, serum concentrations of the inflammatory cytokines IL‑6 and TNF‑α were decreased. The effect of rutaecarpine treatment markedly improved with increases in the drug dose. Capsazepine, as a competitive vanilloid receptor antagonist, abolished these protective effects of rutaecarpine against AP. Therefore, the results of the present study indicate that rutaecarpine protects against AP in rats by upregulating endogenous CGRP release via activation VR1 of, to improving the microcirculation of the pancreatic tissue and regulate the expression of inflammatory factors.

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