Effects of estrogen, raloxifene, and levormeloxifene on the expression of Rho-kinase signaling molecules in urethral smooth muscle cells.

Effects of estrogen, raloxifene, and levormeloxifene on the expression of Rho-kinase signaling molecules in urethral smooth muscle cells.
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DOI:
10.1016/j.urology.2010.07.470
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发表时间:
2010-12
期刊:
影响因子:
2.1
通讯作者:
Lin CS
Lin CS
中科院分区:
医学4区
文献类型:
--
作者:
Ning N;Lin G;Lue TF;Lin CS

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To investigate the effects of estrogen, raloxifene, and levormeloxifene on the expression of Rho-kinase signaling molecules in urethral smooth muscle cells (USMCs). USMCs were isolated from female rats. Expression of calponin and estrogen receptors α (ERα was detected by immunofluorescence staining. Cells were treated with estrogen, raloxifene, or levormeloxifene at 0, 1, 10, and 100 nM for 48 h and then processed for western blotting with antibodies against RhoA, Rho kinase I and II (Rock-I and Rock-II), myosin light chain (MLC), phosphorylated MLC (p-MLC), and β-actin. Protein expression was quantitated by densitometry, followed by statistical analysis with β-actin as control. USMCs expressed calponin and ERα. Treatment of USMCs with estrogen, raloxifene or levormeloxifene resulted in decreased expression of RhoA, Rock-I, Rock-II, and p-MLC in a dosage-dependent manner. Estrogen, raloxifene, and levormeloxifene may affect urinary continence by inhibiting the expression of Rho-kinase signaling molecules.
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