A comparison of the contractile properties of myometrium from singleton and twin pregnancies.

<h4>Objective</h4>Over half of twin pregnancies in US and UK deliver prematurely but the reasons for this are unclear. The contractility of myometrium from twin pregnancies has not been directly investigated. The objective of this research was to determine if there are differences in the...

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Autores principales:	Peter Turton, Sarah Arrowsmith, Jonathan Prescott, Celia Ballard, Leanne Bricker, James Neilson, Susan Wray
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2013
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/9c6d5a1c9e5b440ab7d6c32835fd92b0
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spelling	oai:doaj.org-article:9c6d5a1c9e5b440ab7d6c32835fd92b02021-11-18T07:46:46ZA comparison of the contractile properties of myometrium from singleton and twin pregnancies.1932-620310.1371/journal.pone.0063800https://doaj.org/article/9c6d5a1c9e5b440ab7d6c32835fd92b02013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23671701/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203<h4>Objective</h4>Over half of twin pregnancies in US and UK deliver prematurely but the reasons for this are unclear. The contractility of myometrium from twin pregnancies has not been directly investigated. The objective of this research was to determine if there are differences in the contractile activity and response to oxytocin, between myometrium from singleton and twin pregnancies, across a range of gestational ages. Furthermore, we wished to determine if contractile activity correlates with increasing level of stretch, using neonatal birth weights as a marker of uterine stretch.<h4>Methods</h4>This was an in vitro, laboratory based study of myometrial contractility in women pregnant with one or two babies, using biopsies obtained from non-labouring women undergoing Caesarean section. Spontaneous, oxytocin-stimulated and depolarization induced contractile activity was compared.<h4>Results</h4>Direct measurements of myometrial contractility under controlled conditions show that the frequency of contractions and responses to oxytocin are significantly increased in twins compared to singletons. The duration of contraction however was significantly reduced. We find that contractile activity correlates with increasing levels of stretch, using neonatal birth weights as a surrogate for uterine stretch, with response to oxytocin being significantly positively correlated with birth weight.<h4>Conclusions</h4>We have found significant differences in contractile properties between myometrium from singleton and twin pregnancies and that increasing uterine stretch can alter the contractile properties of myometrium. We discuss the implication of these findings to preterm delivery and future studies.Peter TurtonSarah ArrowsmithJonathan PrescottCelia BallardLeanne BrickerJames NeilsonSusan WrayPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 8, Iss 5, p e63800 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Peter Turton Sarah Arrowsmith Jonathan Prescott Celia Ballard Leanne Bricker James Neilson Susan Wray A comparison of the contractile properties of myometrium from singleton and twin pregnancies.
description	<h4>Objective</h4>Over half of twin pregnancies in US and UK deliver prematurely but the reasons for this are unclear. The contractility of myometrium from twin pregnancies has not been directly investigated. The objective of this research was to determine if there are differences in the contractile activity and response to oxytocin, between myometrium from singleton and twin pregnancies, across a range of gestational ages. Furthermore, we wished to determine if contractile activity correlates with increasing level of stretch, using neonatal birth weights as a marker of uterine stretch.<h4>Methods</h4>This was an in vitro, laboratory based study of myometrial contractility in women pregnant with one or two babies, using biopsies obtained from non-labouring women undergoing Caesarean section. Spontaneous, oxytocin-stimulated and depolarization induced contractile activity was compared.<h4>Results</h4>Direct measurements of myometrial contractility under controlled conditions show that the frequency of contractions and responses to oxytocin are significantly increased in twins compared to singletons. The duration of contraction however was significantly reduced. We find that contractile activity correlates with increasing levels of stretch, using neonatal birth weights as a surrogate for uterine stretch, with response to oxytocin being significantly positively correlated with birth weight.<h4>Conclusions</h4>We have found significant differences in contractile properties between myometrium from singleton and twin pregnancies and that increasing uterine stretch can alter the contractile properties of myometrium. We discuss the implication of these findings to preterm delivery and future studies.
format	article
author	Peter Turton Sarah Arrowsmith Jonathan Prescott Celia Ballard Leanne Bricker James Neilson Susan Wray
author_facet	Peter Turton Sarah Arrowsmith Jonathan Prescott Celia Ballard Leanne Bricker James Neilson Susan Wray
author_sort	Peter Turton
title	A comparison of the contractile properties of myometrium from singleton and twin pregnancies.
title_short	A comparison of the contractile properties of myometrium from singleton and twin pregnancies.
title_full	A comparison of the contractile properties of myometrium from singleton and twin pregnancies.
title_fullStr	A comparison of the contractile properties of myometrium from singleton and twin pregnancies.
title_full_unstemmed	A comparison of the contractile properties of myometrium from singleton and twin pregnancies.
title_sort	comparison of the contractile properties of myometrium from singleton and twin pregnancies.
publisher	Public Library of Science (PLoS)
publishDate	2013
url	https://doaj.org/article/9c6d5a1c9e5b440ab7d6c32835fd92b0
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A comparison of the contractile properties of myometrium from singleton and twin pregnancies.

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