EFFECTS OF DELAYED TRANSFER AND TREATMENT WITH ESTROGEN ON THE TRANSPORT OF MICROSPHERES BY THE RAT OVIDUCT

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dc.contributor.authorMOORE, GD
dc.contributor.authorCROXATTO, HB
dc.date.accessioned2025-01-23T19:24:41Z
dc.date.available2025-01-23T19:24:41Z
dc.date.issued1988
dc.description.abstractStarch or dextran blue microspheres were transferred microsurgically to the influndibulum of the oviduct on Days 1, 2, or 3 of pregnancy of control and oestradiol-treated rats. The animals were killed a few hours to several days after transfer to assess the number and distribution of ova and microspheres in the tract. After transfer on Day 1 of pregnancy, microspheres and eggs crossed the ampullary-isthmic junction (AIJ) 18 h after ovulation. After transfer on Day 2 of pregnancy, more than 50% of microspheres were retained in the ampulla, indicating that the AIJ changes again 34 h after ovulation. Treatment with oestradiol did not advance the passage of eggs or microspheres across the AIJ but caused accelerated transport through the isthmus as soon as the eggs or microspheres reached this segment. Dextran blue microspheres were seen to move back and forth in the isthmus of control anaesthetized rats at a frequency of 5-6 times/min. Between 7 and 20 h after treatment with oestradiol the frequency of these movements was significantly augmented, indicating that increased frequency of contractions of the smooth muscle of the isthmus precedes and accompanies accelerated transport of ova through this segment.
dc.fuente.origenWOS
dc.identifier.issn0022-4251
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/99387
dc.identifier.wosidWOS:A1988P530100036
dc.issue.numero2
dc.language.isoen
dc.pagina.final802
dc.pagina.inicio795
dc.revistaJournal of reproduction and fertility
dc.rightsacceso restringido
dc.subject.ods05 Gender Equality
dc.subject.ods03 Good Health and Well-being
dc.subject.odspa05 Igualdad de género
dc.subject.odspa03 Salud y bienestar
dc.titleEFFECTS OF DELAYED TRANSFER AND TREATMENT WITH ESTROGEN ON THE TRANSPORT OF MICROSPHERES BY THE RAT OVIDUCT
dc.typeartículo
dc.volumen83
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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