{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,26]],"date-time":"2025-10-26T21:04:20Z","timestamp":1761512660710,"version":"build-2065373602"},"reference-count":48,"publisher":"Elsevier BV","license":[{"start":{"date-parts":[[2009,5,1]],"date-time":"2009-05-01T00:00:00Z","timestamp":1241136000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"},{"start":{"date-parts":[[2009,5,1]],"date-time":"2009-05-01T00:00:00Z","timestamp":1241136000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/legal\/tdmrep-license"}],"content-domain":{"domain":["clinicalkey.com","clinicalkey.com.au","clinicalkey.es","clinicalkey.fr","clinicalkey.jp","ejog.org","elsevier.com","sciencedirect.com"],"crossmark-restriction":true},"short-container-title":["European Journal of Obstetrics & Gynecology and Reproductive Biology"],"published-print":{"date-parts":[[2009,5]]},"DOI":"10.1016\/j.ejogrb.2009.02.011","type":"journal-article","created":{"date-parts":[[2009,3,20]],"date-time":"2009-03-20T04:50:22Z","timestamp":1237524622000},"page":"S40-S44","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":16,"special_numbering":"S1","title":["A short review of twin pregnancy and how oxytocin receptor expression may differ in multiple pregnancy"],"prefix":"10.1016","volume":"144","author":[{"given":"Peter","family":"Turton","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"James P.","family":"Neilson","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Siobhan","family":"Quenby","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Theodor","family":"Burdyga","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Susan","family":"Wray","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"78","reference":[{"issue":"9385","key":"10.1016\/j.ejogrb.2009.02.011_bib1","doi-asserted-by":"crossref","first-page":"735","DOI":"10.1016\/S0140-6736(03)14237-7","article-title":"Twinning","volume":"362","author":"Hall","year":"2003","journal-title":"Lancet"},{"issue":"4","key":"10.1016\/j.ejogrb.2009.02.011_bib2","first-page":"209","article-title":"Trends of twinning rates in ten countries, 1972\u20131996","volume":"46","author":"Imaizumi","year":"1997","journal-title":"Acta Genet Med Gemellol (Roma)"},{"issue":"4","key":"10.1016\/j.ejogrb.2009.02.011_bib3","doi-asserted-by":"crossref","first-page":"871","DOI":"10.1016\/j.fertnstert.2005.08.066","article-title":"International disparities in access to infertility services","volume":"85","author":"Nachtigall","year":"2006","journal-title":"Fertil Steril"},{"issue":"4","key":"10.1016\/j.ejogrb.2009.02.011_bib4","first-page":"261","article-title":"The twinning incidence of Nigeria","volume":"28","author":"Nylander","year":"1979","journal-title":"Acta Genet Med Gemellol (Roma)"},{"issue":"4","key":"10.1016\/j.ejogrb.2009.02.011_bib5","doi-asserted-by":"crossref","first-page":"309","DOI":"10.1016\/0020-7292(86)90089-5","article-title":"Perinatal factors in twin mortality in Nigeria","volume":"24","author":"Fakeye","year":"1986","journal-title":"Int J Gynaecol Obstet"},{"issue":"4","key":"10.1016\/j.ejogrb.2009.02.011_bib6","doi-asserted-by":"crossref","first-page":"238","DOI":"10.1375\/twin.4.4.238","article-title":"Twinning rates in Ghana","volume":"4","author":"Mosuro","year":"2001","journal-title":"Twin Res"},{"issue":"6","key":"10.1016\/j.ejogrb.2009.02.011_bib7","first-page":"516","article-title":"Deliveries, mothers and newborn infants in Sweden, 1973\u20132000. Trends in obstetrics as reported to the Swedish medical birth register","volume":"82","author":"Odlind","year":"2003","journal-title":"Acta Obstet Gynecol Scand"},{"issue":"4","key":"10.1016\/j.ejogrb.2009.02.011_bib8","doi-asserted-by":"crossref","first-page":"626","DOI":"10.1375\/twin.10.4.626","article-title":"Temporal trends in the rates of multiple maternities in England and Wales","volume":"10","author":"Eriksson","year":"2007","journal-title":"Twin Res Hum Genet"},{"issue":"11","key":"10.1016\/j.ejogrb.2009.02.011_bib9","first-page":"913","article-title":"Projections of population-based twinning rates through the year 2100","volume":"44","author":"Oleszczuk","year":"1999","journal-title":"J Reprod Med"},{"issue":"10","key":"10.1016\/j.ejogrb.2009.02.011_bib10","first-page":"1","article-title":"Births: final data for 2002","volume":"52","author":"Martin","year":"2003","journal-title":"Natl Vital Stat Rep"},{"issue":"12","key":"10.1016\/j.ejogrb.2009.02.011_bib11","first-page":"1","article-title":"Explaining the 2001\u201302 infant mortality increase: data from the linked birth\/infant death data set","volume":"53","author":"MacDorman","year":"2005","journal-title":"Natl Vital Stat Rep"},{"issue":"4","key":"10.1016\/j.ejogrb.2009.02.011_bib12","doi-asserted-by":"crossref","first-page":"938","DOI":"10.1016\/S0002-9378(00)70350-4","article-title":"Hypertensive disorders in twin versus singleton gestations. National Institute of child health and human development network of maternal\u2013fetal medicine units","volume":"182","author":"Sibai","year":"2000","journal-title":"Am J Obstet Gynecol"},{"issue":"6","key":"10.1016\/j.ejogrb.2009.02.011_bib13","doi-asserted-by":"crossref","first-page":"373","DOI":"10.1055\/s-2007-981852","article-title":"Very-low-birthweight neonates: do outcomes differ in multiple compared with singleton gestations?","volume":"24","author":"Hayes","year":"2007","journal-title":"Am J Perinatol"},{"issue":"4","key":"10.1016\/j.ejogrb.2009.02.011_bib14","doi-asserted-by":"crossref","first-page":"401","DOI":"10.1016\/j.ajog.2007.10.785","article-title":"Maternal morbidity and infant death in twin vs triplet and quadruplet pregnancies","volume":"198","author":"Luke","year":"2008","journal-title":"Am J Obstet Gynecol"},{"issue":"2","key":"10.1016\/j.ejogrb.2009.02.011_bib15","first-page":"93","article-title":"A 59-year-old woman gives birth to twins--when should a fertility specialist refuse treatment?","volume":"35","author":"Check","year":"2008","journal-title":"Clin Exp Obstet Gynecol"},{"issue":"2","key":"10.1016\/j.ejogrb.2009.02.011_bib16","doi-asserted-by":"crossref","first-page":"193","DOI":"10.1007\/s00404-007-0323-7","article-title":"Unique case of successful twin pregnancy after spontaneous conception in a patient with uterus bicornis unicollis","volume":"276","author":"Arora","year":"2007","journal-title":"Arch Gynecol Obstet"},{"issue":"4","key":"10.1016\/j.ejogrb.2009.02.011_bib17","doi-asserted-by":"crossref","first-page":"631","DOI":"10.1016\/j.bpobgyn.2004.04.014","article-title":"How and why are triplets disadvantaged compared to twins?","volume":"18","author":"Blickstein","year":"2004","journal-title":"Best Pract Res Clin Obstet Gynaecol"},{"key":"10.1016\/j.ejogrb.2009.02.011_bib18","doi-asserted-by":"crossref","first-page":"299","DOI":"10.1177\/107155760200900508","article-title":"Expression of Gs\u03b1, connexin-43, connexin-26 and EP1, 3, and 4 receptors in myometrium of prelabor singleton versus multiple gestations and the effects of mechanical stretch and steroids on Gs\u03b1","volume":"9","author":"Lyall","year":"2002","journal-title":"J Soc Gynecol Invest"},{"issue":"2","key":"10.1016\/j.ejogrb.2009.02.011_bib19","doi-asserted-by":"crossref","first-page":"276","DOI":"10.1095\/biolreprod.104.033506","article-title":"Vimentin-positive, c-kit-negative interstitial cells in human and rat uterus: a role in pacemaking?","volume":"72","author":"Duquette","year":"2005","journal-title":"Biol Reprod"},{"issue":"6","key":"10.1016\/j.ejogrb.2009.02.011_bib20","doi-asserted-by":"crossref","first-page":"1564","DOI":"10.1016\/j.ajog.2006.03.063","article-title":"A prospective masked observational study of uterine contraction frequency in twins","volume":"195","author":"Newman","year":"2006","journal-title":"Am J Obstet Gynecol"},{"issue":"Suppl 1","key":"10.1016\/j.ejogrb.2009.02.011_bib21","first-page":"56S","article-title":"Uterine activity characteristics in multiple gestations","volume":"76","author":"Garite","year":"1990","journal-title":"Obstet Gynecol"},{"issue":"5","key":"10.1016\/j.ejogrb.2009.02.011_bib22","doi-asserted-by":"crossref","first-page":"530","DOI":"10.1016\/j.ajog.2007.11.022","article-title":"Ultrasonographic evaluation of myometrial thickness in twin pregnancies","volume":"198","author":"Sfakianaki","year":"2008","journal-title":"Am J Obstet Gynecol"},{"issue":"10","key":"10.1016\/j.ejogrb.2009.02.011_bib23","doi-asserted-by":"crossref","first-page":"661","DOI":"10.7863\/jum.1998.17.10.661","article-title":"Myometrial thickness in pregnancy: longitudinal sonographic study","volume":"17","author":"Degani","year":"1998","journal-title":"J Ultrasound Med"},{"issue":"1","key":"10.1016\/j.ejogrb.2009.02.011_bib24","doi-asserted-by":"crossref","first-page":"18","DOI":"10.1111\/j.1471-0528.1992.tb14385.x","article-title":"Normal amniotic pressure throughout gestation","volume":"99","author":"Fisk","year":"1992","journal-title":"Br J Obstet Gynaecol"},{"issue":"6","key":"10.1016\/j.ejogrb.2009.02.011_bib25","doi-asserted-by":"crossref","first-page":"957","DOI":"10.1016\/0029-7844(95)00054-U","article-title":"Amniotic fluid volume of third-trimester diamniotic twin pregnancies","volume":"85","author":"Magann","year":"1995","journal-title":"Obstet Gynecol"},{"issue":"1","key":"10.1016\/j.ejogrb.2009.02.011_bib26","doi-asserted-by":"crossref","first-page":"8","DOI":"10.1038\/sj.jp.7211204","article-title":"The impact of hydramnios on pregnancy outcome in twin gestations","volume":"25","author":"Orhan","year":"2005","journal-title":"J Perinatol"},{"issue":"12","key":"10.1016\/j.ejogrb.2009.02.011_bib27","doi-asserted-by":"crossref","first-page":"5712","DOI":"10.1210\/endo.140.12.7201","article-title":"Differential expression of myometrial oxytocin receptor and prostaglandin H synthase 2, but not estrogen receptor alpha and heat shock protein 90 messenger ribonucleic acid in the gravid horn and nongravid horn in sheep during betamethasone-induced labor","volume":"140","author":"Wu","year":"1999","journal-title":"Endocrinology"},{"key":"10.1016\/j.ejogrb.2009.02.011_bib28","first-page":"1066","article-title":"In vitro release of prostaglandins from the human myometrium under the influence of stretching","volume":"116","author":"Kloeck","year":"1972","journal-title":"Am J Obstet Gynecol"},{"issue":"3","key":"10.1016\/j.ejogrb.2009.02.011_bib29","doi-asserted-by":"crossref","first-page":"843","DOI":"10.1016\/S0002-9378(96)70311-3","article-title":"Stretching of fetal membranes increases the concentration of interleukin-8 and collagenase activity","volume":"174","author":"Maradny","year":"1996","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ejogrb.2009.02.011_bib30","doi-asserted-by":"crossref","first-page":"497","DOI":"10.1530\/jrf.0.0650497","article-title":"Effect of uterine distension and oestrogen treatment on gap junction formation in the myometrium of the rat","volume":"65","author":"Wathes","year":"1982","journal-title":"J Repro Fertil"},{"key":"10.1016\/j.ejogrb.2009.02.011_bib31","doi-asserted-by":"crossref","first-page":"165","DOI":"10.1159\/000061025","article-title":"Role of mechanical signals in the onset of term and preterm labor","volume":"27","author":"Lye","year":"2001","journal-title":"Front Horm Res"},{"issue":"2","key":"10.1016\/j.ejogrb.2009.02.011_bib32","doi-asserted-by":"crossref","first-page":"239","DOI":"10.1113\/eph8602114","article-title":"The physiological basis of uterine contractility: a short review","volume":"86","author":"Wray","year":"2001","journal-title":"Exp Physiol"},{"issue":"2","key":"10.1016\/j.ejogrb.2009.02.011_bib33","doi-asserted-by":"crossref","first-page":"629","DOI":"10.1152\/physrev.2001.81.2.629","article-title":"The oxytocin receptor system: structure, function, and regulation","volume":"81","author":"Gimpl","year":"2001","journal-title":"Physiol Rev"},{"issue":"Pt 1","key":"10.1016\/j.ejogrb.2009.02.011_bib34","doi-asserted-by":"crossref","first-page":"29","DOI":"10.1113\/jphysiol.2005.098475","article-title":"Lipid rafts, the sarcoplasmic reticulum and uterine calcium signalling: an integrated approach","volume":"570","author":"Noble","year":"2006","journal-title":"J Physiol"},{"key":"10.1016\/j.ejogrb.2009.02.011_bib35","doi-asserted-by":"crossref","first-page":"468","DOI":"10.1016\/S0002-9378(99)70580-6","article-title":"Intracellular calcium stores and agonist induced contractions in human myometrium","volume":"181","author":"Luckas","year":"1999","journal-title":"Am J Obstet Gynec"},{"issue":"3","key":"10.1016\/j.ejogrb.2009.02.011_bib36","first-page":"289","article-title":"Effects of inhibitng the sarcoplasmic reticulum on spontaneous and oxytocin-induced contractions of human myometrium","volume":"109","author":"Kupittayanant","year":"2002","journal-title":"Br J Obstet Gynaec"},{"issue":"4","key":"10.1016\/j.ejogrb.2009.02.011_bib37","doi-asserted-by":"crossref","first-page":"617","DOI":"10.4067\/S0716-97602004000400017","article-title":"Ca2+ entry, efflux and release in smooth muscle","volume":"37","author":"Matthew","year":"2004","journal-title":"Biol Res"},{"issue":"2","key":"10.1016\/j.ejogrb.2009.02.011_bib38","doi-asserted-by":"crossref","first-page":"157","DOI":"10.1016\/j.ceca.2004.02.001","article-title":"Stimulation of intracellular Ca2+ oscillations by diacylglycerol in human myometrial cells","volume":"36","author":"Shlykov","year":"2004","journal-title":"Cell Calcium"},{"issue":"7","key":"10.1016\/j.ejogrb.2009.02.011_bib39","doi-asserted-by":"crossref","first-page":"827","DOI":"10.1111\/j.1745-7254.2006.00393.x","article-title":"Multiple mechanisms involved in oxytocin-induced modulation of myometrial contractility","volume":"27","author":"Shmygol","year":"2006","journal-title":"Acta Pharmacol Sin"},{"key":"10.1016\/j.ejogrb.2009.02.011_bib40","doi-asserted-by":"crossref","first-page":"1055","DOI":"10.1095\/biolreprod59.5.1055","article-title":"Increased expression of the rat myometrial oxytocin receptor messenger ribonucleic acid during labor requires both mechanical and hormonal signals","volume":"59","author":"Ou","year":"1998","journal-title":"Biol Reprod"},{"issue":"1","key":"10.1016\/j.ejogrb.2009.02.011_bib41","doi-asserted-by":"crossref","first-page":"200","DOI":"10.1095\/biolreprod56.1.200","article-title":"Evidence for a local fetal influence on myometrial oxytocin receptors during pregnancy in the tammar wallaby (Macropus eugenii)","volume":"56","author":"Parry","year":"1997","journal-title":"Biol Reprod"},{"issue":"1","key":"10.1016\/j.ejogrb.2009.02.011_bib42","doi-asserted-by":"crossref","first-page":"237","DOI":"10.1210\/jc.2004-0277","article-title":"Mechanical stretch up-regulates the human oxytocin receptor in primary human uterine myocytes","volume":"90","author":"Terzidou","year":"2005","journal-title":"J Clin Endocrinol Metab"},{"issue":"7","key":"10.1016\/j.ejogrb.2009.02.011_bib43","doi-asserted-by":"crossref","first-page":"615","DOI":"10.1139\/o83-077","article-title":"Systemic and local regulation of oxytocin receptors in the rat uterus, and their functional significance","volume":"61","author":"Fuchs","year":"1983","journal-title":"Can J Biochem Cell Biol"},{"issue":"6","key":"10.1016\/j.ejogrb.2009.02.011_bib44","doi-asserted-by":"crossref","first-page":"734","DOI":"10.1016\/0002-9378(84)90677-X","article-title":"Oxytocin receptors in the human uterus during pregnancy and parturition","volume":"150","author":"Fuchs","year":"1984","journal-title":"Am J Obstet Gynecol"},{"issue":"1","key":"10.1016\/j.ejogrb.2009.02.011_bib45","doi-asserted-by":"crossref","first-page":"201","DOI":"10.1067\/mob.2003.438","article-title":"Uterine contractile response to the graded infusion of oxytocin in guinea pigs near term","volume":"189","author":"Schellenberg","year":"2003","journal-title":"Am J Obstet Gynecol"},{"issue":"4","key":"10.1016\/j.ejogrb.2009.02.011_bib46","doi-asserted-by":"crossref","first-page":"E992","DOI":"10.1152\/ajpendo.00492.2006","article-title":"Oxytocin-induced phasic and tonic contractions are modulated by the contractile machinery rather than the quantity of oxytocin receptor","volume":"292","author":"Kawamata","year":"2007","journal-title":"Am J Physiol Endocrinol Metab"},{"key":"10.1016\/j.ejogrb.2009.02.011_bib47","first-page":"93","article-title":"Contractile poperties of myometrium in twin pregnancies","volume":"15","author":"Turton","year":"2008","journal-title":"Arch Dis Child Fetal Neonatal Ed Fa"},{"issue":"5","key":"10.1016\/j.ejogrb.2009.02.011_bib48","doi-asserted-by":"crossref","first-page":"C982","DOI":"10.1152\/ajpcell.00120.2004","article-title":"Increased cholesterol decreases uterine activity: functional effects of cholesterol in pregnant rat myometrium","volume":"288","author":"Smith","year":"2005","journal-title":"Am J Physiol"}],"container-title":["European Journal of Obstetrics & Gynecology and Reproductive Biology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0301211509001481?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0301211509001481?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2025,10,4]],"date-time":"2025-10-04T05:22:03Z","timestamp":1759555323000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/S0301211509001481"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2009,5]]},"references-count":48,"alternative-id":["S0301211509001481"],"URL":"https:\/\/doi.org\/10.1016\/j.ejogrb.2009.02.011","relation":{},"ISSN":["0301-2115"],"issn-type":[{"type":"print","value":"0301-2115"}],"subject":[],"published":{"date-parts":[[2009,5]]},"assertion":[{"value":"Elsevier","name":"publisher","label":"This article is maintained by"},{"value":"A short review of twin pregnancy and how oxytocin receptor expression may differ in multiple pregnancy","name":"articletitle","label":"Article Title"},{"value":"European Journal of Obstetrics & Gynecology and Reproductive Biology","name":"journaltitle","label":"Journal Title"},{"value":"https:\/\/doi.org\/10.1016\/j.ejogrb.2009.02.011","name":"articlelink","label":"CrossRef DOI link to publisher maintained version"},{"value":"article","name":"content_type","label":"Content Type"},{"value":"Copyright \u00a9 2009 Elsevier Ireland Ltd. All rights reserved.","name":"copyright","label":"Copyright"}]}}