Huang S, Zhang T, Chen YN, Huang B, Wang J. Relationship between expression of TPRV1 and TPRV2 and visceral hypersensitivity in rats with irritable bowel syndrome.
Shijie Huaren Xiaohua Zazhi 2013;
21:4133-4139. [DOI:
10.11569/wcjd.v21.i36.4133]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To analyze the pathogenesis of irritable bowel syndrome (IBS) by observing the expression of TPRV1 and TPRV2 in the hypothalamus-pituitary-colon and visceral hypersensitivity in rats.
METHODS: Forty rats were divided into two groups randomly: a normal group and an IBS group. Diarrhea-predominate IBS was induced by intragastrical administration of folium sennae and bondage stress. At the end of the fourth week, all rats were sacrificed by intraperitoneal anesthesia. Histopathological changes were detected by HE staining. The expression of mast cells was detected by toluidine blue staining. The protein and mRNA expression of VR1 and VR2 was assayed by Western blot and real-time PCR. Visceral hypersensitivity was evaluated by colorectal distension and abdominal wall tension.
RESULTS: IBS was characterized by visceral hypersensitivity and mast cell activation. The expression of VR1 and VR2 in the hypothalamus-pituitary-colon was significantly increased in the IBS group compared with the normal group (all P < 0.05).
CONCLUSION: High expression of VR1 and VR2 may mediate visceral hypersensitivity and plays an important role in the development of IBS.
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