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Molecular and functional characterization of TRPV4 channels in pregnant and nonpregnant mouse uterus

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Title Molecular and functional characterization of TRPV4 channels in pregnant and nonpregnant mouse uterus
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Creator Singh V, Ram M, Kandasamy K, Thangamalai R, Choudhary S, Dash JR, Kumar D, Parida S, Singh TU, Mishra SK.
 
Subject TRPV4 channel Mouse uterus PGF2α GSK1016790A HC067047
 
Description Not Available
Aims: The aim of the present study was to characterize TRPV4 channels in pregnant and nonpregnant mouse
uterus and examine their functional role in spontaneous and agonist-induced contractions.
Main methods: We used RT-PCR, Western blot and immunohistochemistry experiments to demonstrate the presence of TRPV4 mRNA and protein, respectively in both pregnant and nonpregnant mouse uterus. Tension experiments were conducted for functional characterization of the TRPV4 channels.
Key findings: TRPV4 mRNA and protein were detected in both pregnant and nonpregnant mouse uterus with distribution in both endometrium and myometrium. The TRPV4 channel agonist GSK1016790A (GSK) increased
myometrial contraction in pregnant (Emax 336.8 ± 21.35%; pD2 7.79 ± 0.29) and nonpregnant (Emax 238 ±
28.13%; pD2 7.61 ± 0.57) animals. HC067047 (1 μM), a selective blocker of the TRPV4 channel, antagonized
the contractions to GSK in pregnant (Emax 171 ± 18.26%; pD2 6.58 ± 0.37) and nonpregnant (Emax 78.12 ±
9.32%; pD2 7.54 ± 0.9) uteri. Further, HC067047 (1 μM) inhibited contractions induced by PGF2α in the pregnant
(Emax 183.2 ± 13.94%; pD2 7.01 ± 0.30 versus control Emax 495.7 ± 42.49%; pD2 7.12 ± 0.24) and nonpregnant
(Emax 105.3 ± 7.10%; pD2 7.24 ± 0.34 versus control Emax 232.5 ± 12.27%; pD2 7.83 ± 0.29) uteri.
Significance: TRPV4 channels are present in the pregnant and nonpregnant mouse uteri, and their activation by
endogenous ligands like prostaglandin increases myometrial contractility. Thus, the TRPV4 channel can be an important target in reducing myometrial contractility in preterm labor.
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Date 2023-05-29T04:28:58Z
2023-05-29T04:28:58Z
2015-12-05
 
Type Article
 
Identifier Singh V, Ram M, Kandasamy K, Thangamalai R, Choudhary S, Dash JR, Kumar D, Parida S, Singh TU, Mishra SK. Molecular and functional characterization of TRPV4 channels in pregnant and nonpregnant mouse uterus. Life Sci. 2015 Feb 1;122:51-8. doi: 10.1016/j.lfs.2014.12.010. Epub 2014 Dec 19. PMID: 25529150.
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http://krishi.icar.gov.in/jspui/handle/123456789/77811
 
Language English
 
Relation Not Available;
 
Publisher Elsevier