[Expression of Calponin-1 and Transgelin in human uterine smooth muscles in non-labor and labor situation].
OBJECTIVE
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.


METHODS
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.


RESULTS
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).


CONCLUSIONS
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.
Department of Pathology, Third Xiangya Hospital, Central South University, Changsha 410013, China. cqj12@yeah.net
Qian
Q
Chen
Yonghong
Y
Gu
Changju
C
Zhou
Lingyu
L
Hu
Changying
C
Peng
D000328:Adult; D002135:Calcium-Binding Proteins / Q000235:genetics / Q000378:metabolism*; D005260:Female; D006801:Humans; D007745:Labor Onset / Q000378:metabolism*; D008840:Microfilament Proteins / Q000235:genetics / Q000378:metabolism*; D009124:Muscle Proteins / Q000235:genetics / Q000378:metabolism*; D009215:Myometrium / Q000378:metabolism*; D011247:Pregnancy; D014590:Uterine Contraction / Q000378:metabolism; D000096985:Calponins
D002135:Calcium-Binding Proteins; D008840:Microfilament Proteins; D009124:Muscle Proteins; D000096985:Calponins; C051615:transgelin