Browsing by Author "Costa, M. E."

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Artículo

Immature rat ovaries become revascularized rapidly after autotransplantation and show a gonadotropin-dependent ...

Dissen, G. A.; Lara Peñaloza, Hernán; Fahrenbach, W. H.; Costa, M. E.; Ojeda, S. R. (Endocrine Society, 1994)

When the ovaries of 23-day-old juvenile rats are transplanted to an ectopic site, they recover within 1 week the ability to control gonadotropin secretion via steroid negative feedback. Vascular corrosion casting followed ...
Artículo

Intraovarian excess of nerve growth factor increases androgen secretion and disrupts estrous cyclicity in the rat

Dissen, G. A.; Lara Peñaloza, Hernán; Leyton Canales, Víctor; Paredes Vargas, Alfonso; Hill, D. F.; Costa, M. E.; Martínez Serrano, A.; Ojeda, Sergio R. (ENDOCRINE SOC, 2000-03)

A single injection of estradiol valerate induces a form of cystic ovary resembling some aspects of the human polycystic ovarian syndrome. Preceding the development of follicular cysts, there is an increase in intraovarian ...
Artículo

Loss of synaptonemal complex protein-1, a synaptonemal complex protein, contributes to the initiation of ...

Paredes Vargas, Alfonso; García Rudaz, C.; Kerr, B.; Tapia, V.; Dissen, G. A.; Costa, M. E.; Cornea, A.; Ojeda, Sergio R. (ENDOCRINE SOC, 2005-12)

In the rat ovary, germ and somatic cells become organized into primordial follicles 48-72 h after birth. Although several genes have been implicated in the control of early follicular growth, less is known about the factors ...