APELIN INDUCED MODULATION OF UTERINE CONTRACTILITY IN ADULT ALBINO RATS AND ITS POSSIBLE MECHANISM/S OF ACTION | ||||
Zagazig University Medical Journal | ||||
Article 21, Volume 26, Issue 1, January and February 2020, Page 174-185 PDF (1.62 MB) | ||||
Document Type: Original Article | ||||
DOI: 10.21608/zumj.2019.11148.1157 | ||||
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Authors | ||||
Ali Khalil Asalah1; sherif wagih mansour2; Kamelia Ibrahim Attia3; Somya El-sayed Mahdi 4 | ||||
1department of physiology , faculty of medicine , Zagazig university | ||||
2physiology department , faculty of medicine zagazig university | ||||
3department of physiology . faculty of medicine , zagazig univeristy | ||||
4Physiology department faculty of medicine Zagazig university | ||||
Abstract | ||||
ABSTRACT Background: Apelin is an endogenous ligand for the G protein-coupled receptor APJ , The expression of both apelin and APJ has been detected in a variety of tissues including heart, ,ovary , placenta and uterus. It has a relaxant effect on smooth muscles of the stomach and blood vessels. However , its effect and mechanism of action on the smooth muscle of the uterus are still controversy Aim of the study : This study was designed to demonstrate the in vitro effects and mechanism of action of apelin on rat uterine reactivity. Material and Methods: 60 adult albino rats (48 females and 12 males). Female rats were randomly divided into non- pregnant, pregnant (day 6 and day 19 ) and 1st day postpartum groups. The effects of apelin (1,10 and 100 nmol /L) on spontaneous reactivity of isolated uterine strips were studied. Also, apelin (100 nmol/L) in the presence of L-NAME , apamin and Glibenclamide was investigated. Results: Apelin exerted a significant dose dependent reduction in frequency and amplitude of spontaneous uterine contraction. This reduction was significantly more potent on day 6 than that in both non pregnant and pregnant rats on day 19. Also , it was significantly and nearly completely abolished in the presence of L-NAME, but it was significantly and partially decreased in the presence of (Apamin) and (Glibenclamide). Conclusion: Apelin has a potent utero-relaxant effect which is greater in early pregnancy compared with late pregnancy. Thus Apelin may be a promising tocolytic drug. | ||||
Keywords | ||||
Apelin; uterine contractility; Pregnancy | ||||
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