Authors: Zhao Bing Liang Linlin Yan Jianguo Ren Shenshen Ren Ruifang Zhang Xi
Publish Date: 2011/12/29
Volume: 39, Issue: 5, Pages: 6077-6085
Abstract
The occurrence of PFD is closely related with elasticity toughness and functional changes of the connective tissue of the pelvic support tissue This study aims to evaluate the effect of mechanical stretch on the differentiation of BMSCs with a coculture with pelvic ligament fibroblasts BMSCs was isolated and identified from 7 day SPF SD rats Rat pelvic ligament fibroblasts were obtained from rat pelvic ligament The fourth passage of fibroblasts was subjected to 10 deformation with 1 Hz 12 h periodic oneway mechanical stretch stimulation and the cells were then cocultured with BMSCs The longer coculture and coculture with mechanical stretch ie 6 and 12 days induced more expression of elastin LOX and Fibulin5 compared to the groups without stimulation Compared to coculture group each Coculture with mechanical stretch stimulation group induced significant expression of elastin LOX and Fibulin5 both in 3 6 and 12 days coculture groups P 005 However there were no significant differences among 3 6 and 12 days control groups These results suggest that in an indirect coculture system pelvic ligament fibroblasts with mechanical stretch stimulation can promote BMSCs differentiation reflecting in the increased expression of elastin LOX and Fibulin5
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