Allopregnanolone alters follicular and luteal dynamics during the estrous cycle.

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Background: Allopregnanolone is a neurosteroid synthesized in the central nervous system independently of steroidogenic glands; it influences sexual behavior and anxiety. The aim of this work is to evaluate the indirect effect of a single pharmacological dose of allopregnanolone on important process...

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Autores principales: Asensio, Joana Antonela, Cáceres, Antonella Rosario Ramona, Pelegrina, Laura Tatiana, Sanhuesa, María de los Ángeles, Scotti, Leopoldina, Parborell, Fernanda, Laconi, Myriam Raquel
Formato: Artículo Científico
Lenguaje:Inglés
Publicado: Comité editor Reproductive Biology and Endocrinology 2020
Materias:
Allopregnanolone
Folliculogenesis
Angiogenesis
Apoptosis
Steroidogenesis
Corpora lutea
Luteolysis
Acceso en línea:http://repositorio.umaza.edu.ar//handle/00261/678
https://rbej.biomedcentral.com/articles/10.1186/s12958-018-0353-y
Aporte de:
UMAZA Digital (Universidad MAZA - Mendoza) de Universidad Juan Agustín MAZA
id I56-R162-00261-1678
record_format dspace
spelling I56-R162-00261-16782023-08-02T11:05:05Z Allopregnanolone alters follicular and luteal dynamics during the estrous cycle. Asensio, Joana Antonela Cáceres, Antonella Rosario Ramona Pelegrina, Laura Tatiana Sanhuesa, María de los Ángeles Scotti, Leopoldina Parborell, Fernanda Laconi, Myriam Raquel Allopregnanolone Folliculogenesis Angiogenesis Apoptosis Steroidogenesis Corpora lutea Luteolysis Background: Allopregnanolone is a neurosteroid synthesized in the central nervous system independently of steroidogenic glands; it influences sexual behavior and anxiety. The aim of this work is to evaluate the indirect effect of a single pharmacological dose of allopregnanolone on important processes related to normal ovarian function, such as folliculogenesis, angiogenesis and luteolysis, and to study the corresponding changes in endocrine profile and enzymatic activity over 4 days of the rat estrous cycle. We test the hypothesis that allopregnanolone may trigger hypothalamus - hypophysis - ovarian axis dysregulation and cause ovarian failure which affects the next estrous cycle stages. Methods: Allopregnanolone was injected during the proestrous morning and then, the animals were sacrificed at each stage of the estrous cycle. Ovarian sections were processed to determine the number and diameter of different ovarian structures. Cleaved caspase 3, proliferating cell nuclear antigen, α-actin and Von Willebrand factor expressions were evaluated by immunohistochemistry. Luteinizing hormone, prolactin, estrogen and progesterone serum levels were measured by radioimmunoassay. The enzymatic activities of 3β-hydroxysteroid dehydrogenase, 3α-hydroxysteroid oxidoreductase and 20α-hydroxysteroid dehydrogenase were determined by spectrophotometric assays. Two-way ANOVA followed by Bonferroni was performed to determine statistical differences between control and treated groups along the four stages of the cycle. Results: The results indicate that allopregnanolone allopregnanolone decreased the number of developing follicles, while atretic follicles and cysts increased with no effects on normal cyclicity. Some cysts in treated ovaries showed morphological characteristics similar to luteinized unruptured follicles. The apoptosis/proliferation balance increased in follicles from treated rats. The endocrine profile was altered at different stages of the estrous cycle of treated rats. The angiogenic markers expression increased in treated ovaries. As regards corpora lutea, the apoptosis/proliferation balance and 20α-hydroxysteroid dehydrogenase enzymatic activity decreased significantly. Progesterone levels and 3β-hydroxysteroid dehydrogenase enzymatic activity increased in treated rats. These data suggest that allopregnanolone interferes with steroidogenesis and folliculogenesis at different stages of the cycle. Conclusion: Allopregnanolone interferes with corpora lutea regression, which might indicate that this neurosteroid exerts a protective role over the luteal cells and prevents them from luteolysis. Allopregnanolone plays an important role in the ovarian pathophysiology. 2020-08-17T13:55:59Z 2020-08-17T13:55:59Z 2018 Artículo Científico Asensio, J.A., Cáceres, A.R.R., Pelegrina, L. T., Sanhueza, M. A., Scotti, L., Parborell, F., & Lanconi, M. R. (2018). Allopregnanolone alters follicular and luteal dynamics during the estrous cycle. Reprod Biol Endocrinol 16, 35. Disponible en: https://doi.org/10.1186/s12958-018-0353-y 1477-7827 http://repositorio.umaza.edu.ar//handle/00261/678 https://rbej.biomedcentral.com/articles/10.1186/s12958-018-0353-y eng application/pdf Comité editor Reproductive Biology and Endocrinology 16;35
institution Universidad Juan Agustín MAZA
institution_str I-56
repository_str R-162
collection UMAZA Digital (Universidad MAZA - Mendoza)
language Inglés
orig_language_str_mv eng
topic Allopregnanolone
Folliculogenesis
Angiogenesis
Apoptosis
Steroidogenesis
Corpora lutea
Luteolysis
spellingShingle Allopregnanolone
Folliculogenesis
Angiogenesis
Apoptosis
Steroidogenesis
Corpora lutea
Luteolysis
Asensio, Joana Antonela
Cáceres, Antonella Rosario Ramona
Pelegrina, Laura Tatiana
Sanhuesa, María de los Ángeles
Scotti, Leopoldina
Parborell, Fernanda
Laconi, Myriam Raquel
Allopregnanolone alters follicular and luteal dynamics during the estrous cycle.
topic_facet Allopregnanolone
Folliculogenesis
Angiogenesis
Apoptosis
Steroidogenesis
Corpora lutea
Luteolysis
description Background: Allopregnanolone is a neurosteroid synthesized in the central nervous system independently of steroidogenic glands; it influences sexual behavior and anxiety. The aim of this work is to evaluate the indirect effect of a single pharmacological dose of allopregnanolone on important processes related to normal ovarian function, such as folliculogenesis, angiogenesis and luteolysis, and to study the corresponding changes in endocrine profile and enzymatic activity over 4 days of the rat estrous cycle. We test the hypothesis that allopregnanolone may trigger hypothalamus - hypophysis - ovarian axis dysregulation and cause ovarian failure which affects the next estrous cycle stages. Methods: Allopregnanolone was injected during the proestrous morning and then, the animals were sacrificed at each stage of the estrous cycle. Ovarian sections were processed to determine the number and diameter of different ovarian structures. Cleaved caspase 3, proliferating cell nuclear antigen, α-actin and Von Willebrand factor expressions were evaluated by immunohistochemistry. Luteinizing hormone, prolactin, estrogen and progesterone serum levels were measured by radioimmunoassay. The enzymatic activities of 3β-hydroxysteroid dehydrogenase, 3α-hydroxysteroid oxidoreductase and 20α-hydroxysteroid dehydrogenase were determined by spectrophotometric assays. Two-way ANOVA followed by Bonferroni was performed to determine statistical differences between control and treated groups along the four stages of the cycle. Results: The results indicate that allopregnanolone allopregnanolone decreased the number of developing follicles, while atretic follicles and cysts increased with no effects on normal cyclicity. Some cysts in treated ovaries showed morphological characteristics similar to luteinized unruptured follicles. The apoptosis/proliferation balance increased in follicles from treated rats. The endocrine profile was altered at different stages of the estrous cycle of treated rats. The angiogenic markers expression increased in treated ovaries. As regards corpora lutea, the apoptosis/proliferation balance and 20α-hydroxysteroid dehydrogenase enzymatic activity decreased significantly. Progesterone levels and 3β-hydroxysteroid dehydrogenase enzymatic activity increased in treated rats. These data suggest that allopregnanolone interferes with steroidogenesis and folliculogenesis at different stages of the cycle. Conclusion: Allopregnanolone interferes with corpora lutea regression, which might indicate that this neurosteroid exerts a protective role over the luteal cells and prevents them from luteolysis. Allopregnanolone plays an important role in the ovarian pathophysiology.
format Artículo Científico
author Asensio, Joana Antonela
Cáceres, Antonella Rosario Ramona
Pelegrina, Laura Tatiana
Sanhuesa, María de los Ángeles
Scotti, Leopoldina
Parborell, Fernanda
Laconi, Myriam Raquel
author_facet Asensio, Joana Antonela
Cáceres, Antonella Rosario Ramona
Pelegrina, Laura Tatiana
Sanhuesa, María de los Ángeles
Scotti, Leopoldina
Parborell, Fernanda
Laconi, Myriam Raquel
author_sort Asensio, Joana Antonela
title Allopregnanolone alters follicular and luteal dynamics during the estrous cycle.
title_short Allopregnanolone alters follicular and luteal dynamics during the estrous cycle.
title_full Allopregnanolone alters follicular and luteal dynamics during the estrous cycle.
title_fullStr Allopregnanolone alters follicular and luteal dynamics during the estrous cycle.
title_full_unstemmed Allopregnanolone alters follicular and luteal dynamics during the estrous cycle.
title_sort allopregnanolone alters follicular and luteal dynamics during the estrous cycle.
publisher Comité editor Reproductive Biology and Endocrinology
publishDate 2020
url http://repositorio.umaza.edu.ar//handle/00261/678
https://rbej.biomedcentral.com/articles/10.1186/s12958-018-0353-y
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