Immunohistochemical distribution of platelet-derived growth factor-C and platelet-derived growth factor receptor-α in small intestine of rats treated with capsaicin

Abstract

The purpose of this study was to examine the effect of capsaicin administration immunohistochemically on platelet-derived growth factor (PDGF)-C and platelet-derived growth factor receptor (PDGFR)-α release in the small intestine tissues of rats. Rats were divided into three groups: group 1 (subcutaneous drug administration), group 2 (oral drug administration), and group 3 (subcutaneous sham administration). Histometric measurements and counts were performed in order to determine whether there was a difference between groups in terms of height of villi, depth of crypts, and goblet cell count in small intestine. The small intestine was examined by Crossman s triple staining method and streptavidin-biotin peroxidase complex method. As a result of statistical analysis, it was found that body weight increased in group 3, while it decreased in groups 1 and 2. Capsaicin administration increased height of villi, depth of crypts, and count of goblet cells located on villi and crypts. Immunohistochemical examinations revealed that capsaicin administration increased PDGF-C and PDGFR-α release. It was concluded that capsaicin has a stimulatory effect on growth and is an enhancer for PDGF-C and PDGFR-α release.