EVALUATION OF THE IMPLANTATION IN PINEALECTOMIZED AND/OR SUBMITTED TO THE CONSTANT ILLUMINATION RATS

In this paper we evaluated the morphologic and quantitative aspects of the implantations sites in uteruses of female pinealectomized and/or submitted to the constant illumination rats. The experimental groups were: I - normal female rats maintained in a clear/dark cycle of 12/12 hours, for two month...

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Autores principales:	Coelho Teixeira,Álvaro Aguiar, Simões,Manuel de Jesus, Wanderley Teixeira,Valéria, Soares Júnior,José Maria
Lenguaje:	English
Publicado:	Sociedad Chilena de Anatomía 2004
Materias:	Pinealectomy Constant illumination Implantation Blastocyst
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022004000300003
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spelling	oai:scielo:S0717-950220040003000032004-10-26EVALUATION OF THE IMPLANTATION IN PINEALECTOMIZED AND/OR SUBMITTED TO THE CONSTANT ILLUMINATION RATSCoelho Teixeira,Álvaro AguiarSimões,Manuel de JesusWanderley Teixeira,ValériaSoares Júnior,José Maria Pinealectomy Constant illumination Implantation Blastocyst In this paper we evaluated the morphologic and quantitative aspects of the implantations sites in uteruses of female pinealectomized and/or submitted to the constant illumination rats. The experimental groups were: I - normal female rats maintained in a clear/dark cycle of 12/12 hours, for two months, mated and euthanasiated in the 6th day of pregnancy (control); II - female sham-pinealectomized rats maintained in a clear/dark cycle of 12/12 hours, for two months, mated and euthanasiated in the 6th day of pregnancy (control); III - female pinealectomized rats, maintained in a clear/dark cycle of 12/12 hours, for two months, mated and euthanasiated in the 6th day of pregnancy; IV - normal female rats maintained in constant illumination for two months, mated and euthanasiated in the 6th day of pregnancy; V - female sham-pinealectomized rats, maintained in constant illumination for two months, mated and euthanasiated in the 6th day of pregnancy; VI - female pinealectomized rats, maintained in constant illumination for two months, mated and euthanasiated in the 6th day of pregnancy. The means of the implantations sites showed that there were significant differences, where the groups III, IV, V and VI differed from the groups II and I, which presented the highest means. The groups III, IV, V and VI didn't differ amongst themselves. The sites in the control groups revealed the presence of small gaps containing blood, trophoblastic cells, and some polyploid cytotrophoblasts. In the groups III, IV, V and VI it was evidenced well-developed gaps at the sites, with trophoblasts, cytotrophoblasts with high polyploidy degree and syncytiotrophoblasts. In conclusion the pinealectomy and/or constant illumination reduce of the number implants in female rats besides to stimulate the development of the implantation sites, indicating thus a probable function of the melatonin in the viability of implantation of the blastocystinfo:eu-repo/semantics/openAccessSociedad Chilena de AnatomíaInternational Journal of Morphology v.22 n.3 20042004-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022004000300003en10.4067/S0717-95022004000300003
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Pinealectomy Constant illumination Implantation Blastocyst
spellingShingle	Pinealectomy Constant illumination Implantation Blastocyst Coelho Teixeira,Álvaro Aguiar Simões,Manuel de Jesus Wanderley Teixeira,Valéria Soares Júnior,José Maria EVALUATION OF THE IMPLANTATION IN PINEALECTOMIZED AND/OR SUBMITTED TO THE CONSTANT ILLUMINATION RATS
description	In this paper we evaluated the morphologic and quantitative aspects of the implantations sites in uteruses of female pinealectomized and/or submitted to the constant illumination rats. The experimental groups were: I - normal female rats maintained in a clear/dark cycle of 12/12 hours, for two months, mated and euthanasiated in the 6th day of pregnancy (control); II - female sham-pinealectomized rats maintained in a clear/dark cycle of 12/12 hours, for two months, mated and euthanasiated in the 6th day of pregnancy (control); III - female pinealectomized rats, maintained in a clear/dark cycle of 12/12 hours, for two months, mated and euthanasiated in the 6th day of pregnancy; IV - normal female rats maintained in constant illumination for two months, mated and euthanasiated in the 6th day of pregnancy; V - female sham-pinealectomized rats, maintained in constant illumination for two months, mated and euthanasiated in the 6th day of pregnancy; VI - female pinealectomized rats, maintained in constant illumination for two months, mated and euthanasiated in the 6th day of pregnancy. The means of the implantations sites showed that there were significant differences, where the groups III, IV, V and VI differed from the groups II and I, which presented the highest means. The groups III, IV, V and VI didn't differ amongst themselves. The sites in the control groups revealed the presence of small gaps containing blood, trophoblastic cells, and some polyploid cytotrophoblasts. In the groups III, IV, V and VI it was evidenced well-developed gaps at the sites, with trophoblasts, cytotrophoblasts with high polyploidy degree and syncytiotrophoblasts. In conclusion the pinealectomy and/or constant illumination reduce of the number implants in female rats besides to stimulate the development of the implantation sites, indicating thus a probable function of the melatonin in the viability of implantation of the blastocyst
author	Coelho Teixeira,Álvaro Aguiar Simões,Manuel de Jesus Wanderley Teixeira,Valéria Soares Júnior,José Maria
author_facet	Coelho Teixeira,Álvaro Aguiar Simões,Manuel de Jesus Wanderley Teixeira,Valéria Soares Júnior,José Maria
author_sort	Coelho Teixeira,Álvaro Aguiar
title	EVALUATION OF THE IMPLANTATION IN PINEALECTOMIZED AND/OR SUBMITTED TO THE CONSTANT ILLUMINATION RATS
title_short	EVALUATION OF THE IMPLANTATION IN PINEALECTOMIZED AND/OR SUBMITTED TO THE CONSTANT ILLUMINATION RATS
title_full	EVALUATION OF THE IMPLANTATION IN PINEALECTOMIZED AND/OR SUBMITTED TO THE CONSTANT ILLUMINATION RATS
title_fullStr	EVALUATION OF THE IMPLANTATION IN PINEALECTOMIZED AND/OR SUBMITTED TO THE CONSTANT ILLUMINATION RATS
title_full_unstemmed	EVALUATION OF THE IMPLANTATION IN PINEALECTOMIZED AND/OR SUBMITTED TO THE CONSTANT ILLUMINATION RATS
title_sort	evaluation of the implantation in pinealectomized and/or submitted to the constant illumination rats
publisher	Sociedad Chilena de Anatomía
publishDate	2004
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022004000300003
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EVALUATION OF THE IMPLANTATION IN PINEALECTOMIZED AND/OR SUBMITTED TO THE CONSTANT ILLUMINATION RATS

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