Abstract
To investigate the expression of Calponin-1 and Transgenlin in the uterine smooth muscles during normal labor on-sets, and to evaluate their effect on initiating the normal labor. A total of 14 uterine bodies and lower segments of human pregnancy were divided to a non-labor group (NIL) and a labor group(IL). Immunohistochemical technology and Western blot were used to determine the expression of Calponin-1 and Transgelin in the 2 groups. Immunohistochemical detection and Western blot showed that Calponin-1 protein in the uterine smooth muscle tissue of the body and the lower uterine segment of smooth muscle tissues had significant difference (P<0.05). The expression of Transgelin in the uterine body smooth muscle tissue in the IL was higher than that in the NIL(P<0.05). In the lower uterine segments of the smooth muscle, the expression of Transgelin was not significantly different in the 2 groups (P>0.05). Calponin-1 of the uterine smooth muscle and Transgelin of the uterine body smooth muscle may involve in the regulation of uterine smooth muscle contractility, which is closely related to child birth launch.
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