MORPHOLOGIC ASPECTS OF THE ENDOMETRIUM, IN THE ESTRUS PHASE, OF PINEALECTOMIZED RATS

SUMMARY: In this paper, it was analyzed morphologically the endometrium of pinealectomized rats, treated or not with melatonin, besides luteinizing hormones levels (LH), stimulating follicle (FSH) and prolactin (PRL). The experimental groups were: I  normal rats, during three months; II &am...

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Autores principales:	Aguiar Coelho Teixeira,Álvaro, de Jesus Simões,Manuel, Evêncio Neto,Joaquim, Wanderley Teixeira,Valéria
Lenguaje:	English
Publicado:	Sociedad Chilena de Anatomía 2002
Materias:	Melatonin Endometrium Pineal Estrus
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-98682002000200005
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spelling	oai:scielo:S0716-986820020002000052005-10-04MORPHOLOGIC ASPECTS OF THE ENDOMETRIUM, IN THE ESTRUS PHASE, OF PINEALECTOMIZED RATSAguiar Coelho Teixeira,Álvarode Jesus Simões,ManuelEvêncio Neto,JoaquimWanderley Teixeira,Valéria Melatonin Endometrium Pineal Estrus SUMMARY: In this paper, it was analyzed morphologically the endometrium of pinealectomized rats, treated or not with melatonin, besides luteinizing hormones levels (LH), stimulating follicle (FSH) and prolactin (PRL). The experimental groups were: I normal rats, during three months; II normal rats, during six months; III pinelalectomized rats evaluated after three months; IV pinealectomized rats treated with melatonin for three months; V pinealectomized rats evaluated after six months; VI pinealectomized rats for three months, and after treated with melatonin for more three months. In the animals from groups III and V, the estrous ciclicity was modified, because beyond the increase in the incidence of the estrus phase, some animals developed a persistent estrus condition. In the other groups the estrous cycle was normal. The hormonal dosage showed that there was an increase in the LH levels in groups III and V, and a small reduction in group IV. There weren't changes between groups VI and II. The levels of FSH and PRL showed themselves reduced in all animals from the pinealectomized group. However, these results didn't show statistically meaningful differences. In groups III, V and VI the endometrium presented a normal aspect except by the presence of several endometrial glands, in most cases, dilated. In the animals that developed persistent estrus, it was observed a very fibrous stroma and rare endometrial glands, some of them presenting non-keratinazed pavement stratified epithelium. The animals in group IV showed a similar endometrium to the control groups. It was concluded that the pinealectomy can draw to the condition of persistent estrus, not producing great variation in the serumal levels of the gonadotrophic hormones, and inducing more effective changes in the glandular epitheliuminfo:eu-repo/semantics/openAccessSociedad Chilena de AnatomíaRevista chilena de anatomía v.20 n.2 20022002-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-98682002000200005en10.4067/S0716-98682002000200005
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Melatonin Endometrium Pineal Estrus
spellingShingle	Melatonin Endometrium Pineal Estrus Aguiar Coelho Teixeira,Álvaro de Jesus Simões,Manuel Evêncio Neto,Joaquim Wanderley Teixeira,Valéria MORPHOLOGIC ASPECTS OF THE ENDOMETRIUM, IN THE ESTRUS PHASE, OF PINEALECTOMIZED RATS
description	SUMMARY: In this paper, it was analyzed morphologically the endometrium of pinealectomized rats, treated or not with melatonin, besides luteinizing hormones levels (LH), stimulating follicle (FSH) and prolactin (PRL). The experimental groups were: I normal rats, during three months; II normal rats, during six months; III pinelalectomized rats evaluated after three months; IV pinealectomized rats treated with melatonin for three months; V pinealectomized rats evaluated after six months; VI pinealectomized rats for three months, and after treated with melatonin for more three months. In the animals from groups III and V, the estrous ciclicity was modified, because beyond the increase in the incidence of the estrus phase, some animals developed a persistent estrus condition. In the other groups the estrous cycle was normal. The hormonal dosage showed that there was an increase in the LH levels in groups III and V, and a small reduction in group IV. There weren't changes between groups VI and II. The levels of FSH and PRL showed themselves reduced in all animals from the pinealectomized group. However, these results didn't show statistically meaningful differences. In groups III, V and VI the endometrium presented a normal aspect except by the presence of several endometrial glands, in most cases, dilated. In the animals that developed persistent estrus, it was observed a very fibrous stroma and rare endometrial glands, some of them presenting non-keratinazed pavement stratified epithelium. The animals in group IV showed a similar endometrium to the control groups. It was concluded that the pinealectomy can draw to the condition of persistent estrus, not producing great variation in the serumal levels of the gonadotrophic hormones, and inducing more effective changes in the glandular epithelium
author	Aguiar Coelho Teixeira,Álvaro de Jesus Simões,Manuel Evêncio Neto,Joaquim Wanderley Teixeira,Valéria
author_facet	Aguiar Coelho Teixeira,Álvaro de Jesus Simões,Manuel Evêncio Neto,Joaquim Wanderley Teixeira,Valéria
author_sort	Aguiar Coelho Teixeira,Álvaro
title	MORPHOLOGIC ASPECTS OF THE ENDOMETRIUM, IN THE ESTRUS PHASE, OF PINEALECTOMIZED RATS
title_short	MORPHOLOGIC ASPECTS OF THE ENDOMETRIUM, IN THE ESTRUS PHASE, OF PINEALECTOMIZED RATS
title_full	MORPHOLOGIC ASPECTS OF THE ENDOMETRIUM, IN THE ESTRUS PHASE, OF PINEALECTOMIZED RATS
title_fullStr	MORPHOLOGIC ASPECTS OF THE ENDOMETRIUM, IN THE ESTRUS PHASE, OF PINEALECTOMIZED RATS
title_full_unstemmed	MORPHOLOGIC ASPECTS OF THE ENDOMETRIUM, IN THE ESTRUS PHASE, OF PINEALECTOMIZED RATS
title_sort	morphologic aspects of the endometrium, in the estrus phase, of pinealectomized rats
publisher	Sociedad Chilena de Anatomía
publishDate	2002
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-98682002000200005
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MORPHOLOGIC ASPECTS OF THE ENDOMETRIUM, IN THE ESTRUS PHASE, OF PINEALECTOMIZED RATS

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