Study of Wistar Rats Heart at Different Stages in the Evolutionary Cycle

The rat is probably the most commonly used animal in scientific research. There are many benefits to its use such as: ability to work a large number of animals allowing greater statistical validity, the relatively short life cycles. However, the scant literature regarding the anatomy and morphology...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	De Carvalho,C. A. M, Thomazini,J. A
Lenguaje:	English
Publicado:	Sociedad Chilena de Anatomía 2014
Materias:	Weight Measures Heart Rats
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022014000200039
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:scielo:S0717-95022014000200039
record_format	dspace
spelling	oai:scielo:S0717-950220140002000392015-11-16Study of Wistar Rats Heart at Different Stages in the Evolutionary CycleDe Carvalho,C. A. MThomazini,J. A Weight Measures Heart Rats The rat is probably the most commonly used animal in scientific research. There are many benefits to its use such as: ability to work a large number of animals allowing greater statistical validity, the relatively short life cycles. However, the scant literature regarding the anatomy and morphology of these animals is also old and not very descriptive. The objective of this research is to study the macroscopic morphometric aspects of several parameters that have not been described yet regarding the heart of Wistar rats in different phases of their lives. Thirty-six adult male and female rats (Rattus norvegicus) weighting 150-770 g were randomly divided into 6 experimental groups. The heart was then carefully dissected and removed from the chest. After this process, the heart had their weight measured on a precision scale HELMAC HM100, and for each front section of the heart related measures were taken through a semi-automatic image analysis of Kontron Build Analyse (Minimop). The percentage ratio between the relative heart weight to body weight was between 0.5 and 0.7% in the animals with body weight up to 650 g. The maximum and minimum diameters were always statistically lower in females compared to males. The measurements showed the hearts of the females shorter, narrower, smaller and lighter than those of males. Over the life of these females, although the heart weight increases, the heart apparently keeps its shape and size. Furthermore, the hearts of males narrow and stretch along their development.info:eu-repo/semantics/openAccessSociedad Chilena de AnatomíaInternational Journal of Morphology v.32 n.2 20142014-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022014000200039en10.4067/S0717-95022014000200039
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Weight Measures Heart Rats
spellingShingle	Weight Measures Heart Rats De Carvalho,C. A. M Thomazini,J. A Study of Wistar Rats Heart at Different Stages in the Evolutionary Cycle
description	The rat is probably the most commonly used animal in scientific research. There are many benefits to its use such as: ability to work a large number of animals allowing greater statistical validity, the relatively short life cycles. However, the scant literature regarding the anatomy and morphology of these animals is also old and not very descriptive. The objective of this research is to study the macroscopic morphometric aspects of several parameters that have not been described yet regarding the heart of Wistar rats in different phases of their lives. Thirty-six adult male and female rats (Rattus norvegicus) weighting 150-770 g were randomly divided into 6 experimental groups. The heart was then carefully dissected and removed from the chest. After this process, the heart had their weight measured on a precision scale HELMAC HM100, and for each front section of the heart related measures were taken through a semi-automatic image analysis of Kontron Build Analyse (Minimop). The percentage ratio between the relative heart weight to body weight was between 0.5 and 0.7% in the animals with body weight up to 650 g. The maximum and minimum diameters were always statistically lower in females compared to males. The measurements showed the hearts of the females shorter, narrower, smaller and lighter than those of males. Over the life of these females, although the heart weight increases, the heart apparently keeps its shape and size. Furthermore, the hearts of males narrow and stretch along their development.
author	De Carvalho,C. A. M Thomazini,J. A
author_facet	De Carvalho,C. A. M Thomazini,J. A
author_sort	De Carvalho,C. A. M
title	Study of Wistar Rats Heart at Different Stages in the Evolutionary Cycle
title_short	Study of Wistar Rats Heart at Different Stages in the Evolutionary Cycle
title_full	Study of Wistar Rats Heart at Different Stages in the Evolutionary Cycle
title_fullStr	Study of Wistar Rats Heart at Different Stages in the Evolutionary Cycle
title_full_unstemmed	Study of Wistar Rats Heart at Different Stages in the Evolutionary Cycle
title_sort	study of wistar rats heart at different stages in the evolutionary cycle
publisher	Sociedad Chilena de Anatomía
publishDate	2014
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022014000200039
work_keys_str_mv	AT decarvalhocam studyofwistarratsheartatdifferentstagesintheevolutionarycycle AT thomazinija studyofwistarratsheartatdifferentstagesintheevolutionarycycle
_version_	1718444873057566720

Study of Wistar Rats Heart at Different Stages in the Evolutionary Cycle

Ejemplares similares