Influence of estrogen replacement therapy to the expression of S-100 and connexin 43 in adenohypophyseal folliculo stellate cells of rats with osteoporosis after ovariectomy
- VernacularTitle:雌激素替代治疗对去卵巢骨质疏松大鼠腺垂体滤泡星形细胞中S-100、Cx43蛋白表达的影响
- Author:
Xing MA
;
Qihong LI
;
Quanping WANG
- Publication Type:Journal Article
- Keywords:
Osteoporosis;
Connexin 43;
Nerve tissue protein S 100;
Pituitary gland;
Rats
- From:
Chinese Journal of Orthopaedics
2000;0(11):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the expression of nerve tissue protein S-100(S-100)and gap junctional protein connexin 43(Cx43) in rat adenohypophyseal folliculo stellate cells(FSCs) under the influence of ovariectomized osteoporosis(OVX-OP) and estrogen replacement therapy(ERT). Methods Sixty 10 month old female rats were randomly divided into sham operation control group(Sham), ovariectomy group (OVX) and ovariectomy+ERT group (OVX+ERT). L4-6 bone mineral density(BMD) of the animals in Sham group and OVX group were measured by dual energy X-ray absorptiometry(DEXA) at the end of 6 weeks after operation. From 7th week, rats in OVX+ERT group were treated with nilestriol(1 mg?kg -1?week-1) for 6 weeks. Rat L4-6 BMD in OVX+ERT group were measured at the end of 12 weeks after operation. Expression of S-100 and Cx43 in FSCs was detected using immunofluorescent histochemistry and laser scanning confocal microscopy(LSCM). Results L4-6 BMD was significantly lower in OVX group (0.193?0.006) g/cm2 than in Sham group(0.211?0.013) g/cm2 and in OVX+ERT group (0.204?0.010) g/cm2 (P
