Alteration in expressions of RhoA and Rho-kinases during pregnancy in rats: their roles in uterine contractions and onset of labour.

罗亚 法苏迪尔 Rho相关蛋白激酶 肌球蛋白 子宫 激酶 Rho激酶抑制剂 化学 肌层 磷酸化 内科学 男科 内分泌学 细胞生物学 生物 信号转导 医学
作者
D. Domokos,Eszter Ducza,George Falkay,Róbert Gáspár
出处
期刊:PubMed 卷期号:68 (3): 439-451 被引量:1
链接
标识
摘要

Activation of RhoA and Rho-associated kinases (ROCKs) is known to play a pivotal role in the regulation of smooth muscle contraction via phosphorylation of myosin-light chain and myosin phosphatase. There are few data on the RhoA and ROCKs expression levels in rat uteri. Therefore, our aim was to investigate the mRNA and protein concentration of RhoA and ROCKs in rat uterus during pregnancy, during parturition and post-partum using real time PCR and Western blot analysis. The other purpose was to evaluate the effects of the ROCK (Y-27632, fasudil and RKI 1441) and RhoA inhibitors (simvastatin) on uterine contractility in isolated organ bath experiments. The mRNA and protein levels of RhoA decreased on the 5th day of pregnancy to day 22, then a sharp increase was detected at term. The mRNA and protein concentration of ROCKs was down-regulated in the early stage of pregnancy, while it sharply increased during parturition. The RhoA-inhibitor simvastatin relaxed the uterus contractions, although its inhibitory effects were not followed by the alteration of RhoA. The strongest inhibitory effect of non-selective ROCK inhibitor fasudil was found on non-pregnant uterus, while it elicited milder relaxation on day 22, during parturition and postpartum day 1. The maximum relaxing effects of Y-27632 and RKI 1441 were altered in a proportional way with the target protein expressions. The RhoA/ROCK signalling pathway might be a potential target for the development of new tocolytic agents; however, high specificity to RhoA, ROCK I or ROCK II seems to be fundamental to the high efficacy of uterine relaxation.

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
大幅提高文件上传限制,最高150M (2024-4-1)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
筱灬发布了新的文献求助10
1秒前
含蓄的明雪应助xlong采纳,获得10
1秒前
2秒前
muncy发布了新的文献求助10
2秒前
2秒前
安陌煜完成签到,获得积分10
2秒前
3秒前
涣醒发布了新的文献求助10
3秒前
阿莫发布了新的文献求助10
3秒前
qiming完成签到,获得积分10
4秒前
5秒前
5秒前
大白菜发布了新的文献求助10
5秒前
庸人自扰发布了新的文献求助10
6秒前
勤恳怀梦发布了新的文献求助10
6秒前
Sirila完成签到,获得积分10
8秒前
含蓄的明雪应助Stitch采纳,获得10
8秒前
樱桃小贩完成签到,获得积分10
10秒前
grell发布了新的文献求助10
10秒前
科研通AI2S应助laife采纳,获得10
10秒前
大模型应助涣醒采纳,获得10
13秒前
bc完成签到,获得积分10
14秒前
16秒前
Lynn完成签到,获得积分10
16秒前
17秒前
WenJun完成签到,获得积分10
17秒前
18秒前
宋志远完成签到,获得积分10
19秒前
今后应助Zhang采纳,获得10
19秒前
CHENJIXIANG发布了新的文献求助10
20秒前
涣醒完成签到,获得积分10
20秒前
echooooo完成签到,获得积分10
20秒前
传奇3应助淡定的半鬼采纳,获得10
22秒前
23秒前
23秒前
天灰灰难回味应助Hh采纳,获得10
24秒前
Likx完成签到,获得积分10
25秒前
科研菜鸟完成签到,获得积分10
26秒前
27秒前
大白菜完成签到,获得积分10
27秒前
高分求助中
Evolution 10000
Sustainability in Tides Chemistry 2800
юрские динозавры восточного забайкалья 800
English Wealden Fossils 700
A new species of Coccus (Homoptera: Coccoidea) from Malawi 500
A new species of Velataspis (Hemiptera Coccoidea Diaspididae) from tea in Assam 500
Diagnostic immunohistochemistry : theranostic and genomic applications 6th Edition 500
热门求助领域 (近24小时)
化学 医学 生物 材料科学 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 基因 遗传学 催化作用 物理化学 免疫学 量子力学 细胞生物学
热门帖子
关注 科研通微信公众号,转发送积分 3155953
求助须知:如何正确求助?哪些是违规求助? 2807296
关于积分的说明 7872331
捐赠科研通 2465597
什么是DOI,文献DOI怎么找? 1312272
科研通“疑难数据库(出版商)”最低求助积分说明 630017
版权声明 601905