Temporal window in which exposure to estradiol permanently modifies ovarian function causing polycystic ovary morphology in rats
Author
dc.contributor.author
Cruz, Gonzalo
Author
dc.contributor.author
Barra, Rafael
Author
dc.contributor.author
González, Daniel
Author
dc.contributor.author
Sotomayor Zárate, Ramón
Author
dc.contributor.author
Lara Peñaloza, Hernán
Admission date
dc.date.accessioned
2019-03-15T16:03:21Z
Available date
dc.date.available
2019-03-15T16:03:21Z
Publication date
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2012
Cita de ítem
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Fertility and Sterility, Volumen 98, Issue 5, 2018, Pages 1283-1290
Identifier
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00150282
Identifier
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15565653
Identifier
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10.1016/j.fertnstert.2012.07.1060
Identifier
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https://repositorio.uchile.cl/handle/2250/165822
Abstract
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Objective: To investigate the developmental window in which E2 exposure produces irreversible changes in ovarian function resulting in polycystic ovary. Design: Basic experimental study. Setting: University animal laboratory. Animal(s): Thirty Sprague-Dawley rats were administered a single E2 valerate dose (10 mg/kg of weight) at 1, 7, 14, 21, or 30 days of age. Control rats were injected with the vehicle at 1 day of age. All rats were sacrificed at 6 months of age. Intervention(s): Observation of vaginal opening, estrous cyclicity by vaginal smears, and ovarian morphometry in the 6-month-old rat. Main Outcome Measure(s): Measurement of ovarian noradrenaline by high-performance liquid chromatography coupled with electrochemical detection, serum levels of LH by enzyme-linked immunoassay, P, androstenedione, and E 2 by enzyme immunoassay. Result(s): Rats exposed to E2 at 1, 7, or 14 days of life did not show estrual cycling activity and maintained a polycystic ovary (PCO) condition throu