Follicular-Stromal Interaction in Mare Ovary During the Reproductive Cycle

Ovogenesis and foliculogenesis in the mare differ from other farm animals and therefore, gamete manipulation, in vitro fertilization and embryo transfer have been very difficult. The histologic traits of ovaries from 12 mares, in estrus and diestrus were studied. Number and size of follicules and co...

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Autores principales:	Smok S,Carolina, Rojas R,Mariana
Lenguaje:	English
Publicado:	Sociedad Chilena de Anatomía 2010
Materias:	Follicle Stroma Mare ovary Seasonality
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022010000300007
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spelling	oai:scielo:S0717-950220100003000072010-10-25Follicular-Stromal Interaction in Mare Ovary During the Reproductive CycleSmok S,CarolinaRojas R,Mariana Follicle Stroma Mare ovary Seasonality Ovogenesis and foliculogenesis in the mare differ from other farm animals and therefore, gamete manipulation, in vitro fertilization and embryo transfer have been very difficult. The histologic traits of ovaries from 12 mares, in estrus and diestrus were studied. Number and size of follicules and corpora lutea were recorded. The ovarian stroma was evaluated using the pricosirius technique for collagen. A simple morphometric analysis was done using computerized scanner programs. During late estrus, one dominant follicle (46 ± 4mm) is seen. The surrounding stroma contains collagen I and III. By the end of the estrus, one hemorrhagic follicle is seen, plus one or two small follicle (2 mm in size). In early diestrus there is a corpus luteum (43-60 mm) and some antral follicles (6±1). Collagen I forms strands inside the corpus luteum and predominates in the perifollicular ovarian stroma. Modifications of the extracellular matrix may change cell function by way of integrines, the matrix being in turn modified by hormones and other tissular factors. Estrogens can be related to collagen III predominance in ovarian stroma whereas progesterone is associated with increased collagen I. Therefore, follicular-stromal interactions are important in ovarian histophysiology.info:eu-repo/semantics/openAccessSociedad Chilena de AnatomíaInternational Journal of Morphology v.28 n.3 20102010-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022010000300007en10.4067/S0717-95022010000300007
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Follicle Stroma Mare ovary Seasonality
spellingShingle	Follicle Stroma Mare ovary Seasonality Smok S,Carolina Rojas R,Mariana Follicular-Stromal Interaction in Mare Ovary During the Reproductive Cycle
description	Ovogenesis and foliculogenesis in the mare differ from other farm animals and therefore, gamete manipulation, in vitro fertilization and embryo transfer have been very difficult. The histologic traits of ovaries from 12 mares, in estrus and diestrus were studied. Number and size of follicules and corpora lutea were recorded. The ovarian stroma was evaluated using the pricosirius technique for collagen. A simple morphometric analysis was done using computerized scanner programs. During late estrus, one dominant follicle (46 ± 4mm) is seen. The surrounding stroma contains collagen I and III. By the end of the estrus, one hemorrhagic follicle is seen, plus one or two small follicle (2 mm in size). In early diestrus there is a corpus luteum (43-60 mm) and some antral follicles (6±1). Collagen I forms strands inside the corpus luteum and predominates in the perifollicular ovarian stroma. Modifications of the extracellular matrix may change cell function by way of integrines, the matrix being in turn modified by hormones and other tissular factors. Estrogens can be related to collagen III predominance in ovarian stroma whereas progesterone is associated with increased collagen I. Therefore, follicular-stromal interactions are important in ovarian histophysiology.
author	Smok S,Carolina Rojas R,Mariana
author_facet	Smok S,Carolina Rojas R,Mariana
author_sort	Smok S,Carolina
title	Follicular-Stromal Interaction in Mare Ovary During the Reproductive Cycle
title_short	Follicular-Stromal Interaction in Mare Ovary During the Reproductive Cycle
title_full	Follicular-Stromal Interaction in Mare Ovary During the Reproductive Cycle
title_fullStr	Follicular-Stromal Interaction in Mare Ovary During the Reproductive Cycle
title_full_unstemmed	Follicular-Stromal Interaction in Mare Ovary During the Reproductive Cycle
title_sort	follicular-stromal interaction in mare ovary during the reproductive cycle
publisher	Sociedad Chilena de Anatomía
publishDate	2010
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022010000300007
work_keys_str_mv	AT smokscarolina follicularstromalinteractioninmareovaryduringthereproductivecycle AT rojasrmariana follicularstromalinteractioninmareovaryduringthereproductivecycle
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Follicular-Stromal Interaction in Mare Ovary During the Reproductive Cycle

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