Aspects of the Macro and Microscopic Anatomy of the Sciatic Nerve in Wistar Rats

The present study seeks to systematize morphological and morphometrical parameters and brings new data on the main branch of the lumbosacral plexus i.e., sciatic nerve in Wistar rats aged four and seven weeks. Sixteen female were divided into two groups, namely animals aged four weeks, and anima...

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Autores principales:	Suaid,Carla Adelino, Santos,Ana Paula, Yamane,Fernanda de Oliveira, Fazan,Valéria Paula Sassoli, Barreira,Amilton Antunes
Lenguaje:	English
Publicado:	Sociedad Chilena de Anatomía 2016
Materias:	Rat sciatic nerve Myelinated nerve fibers Capillaries Anatomy and histology Animal experimental use
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022016000300010
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spelling	oai:scielo:S0717-950220160003000102016-11-17Aspects of the Macro and Microscopic Anatomy of the Sciatic Nerve in Wistar RatsSuaid,Carla AdelinoSantos,Ana PaulaYamane,Fernanda de OliveiraFazan,Valéria Paula SassoliBarreira,Amilton Antunes Rat sciatic nerve Myelinated nerve fibers Capillaries Anatomy and histology Animal experimental use The present study seeks to systematize morphological and morphometrical parameters and brings new data on the main branch of the lumbosacral plexus i.e., sciatic nerve in Wistar rats aged four and seven weeks. Sixteen female were divided into two groups, namely animals aged four weeks, and animals aged seven weeks. The specimens were studied at proximal and distal segments of the right hind limb sciatic nerves. Semi-thin transverse sections (0.25 µm thickness) were stained with 1 % toluidine blue, and the morphometric analysis was processed through the KS 400 software. Except for the number of fascicles and fascicular diameter, no differences were found between the proximal and distal segments. We observed differences when morphometric values were compared between 4- and 7- week old animals, with some exceptions (number of fascicles and myelinated fibers, and capillary area and number). The macroscopic data disagree with a previous description of the sciatic nerve being composed by two fascicles. Instead, sciatic nerve's only fascicle trifurcates or quadrifurcates at the distal third of the thigh. The total capillary area and density were calculated, and these are the first referential data for the sciatic nerve. Histograms of myelinated fiber and axons considering the animal ages were built. The results presented here are important because experimental studies, mainly studies on nerve regenerations require comparison with normal reliable data.info:eu-repo/semantics/openAccessSociedad Chilena de AnatomíaInternational Journal of Morphology v.34 n.3 20162016-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022016000300010en10.4067/S0717-95022016000300010
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Rat sciatic nerve Myelinated nerve fibers Capillaries Anatomy and histology Animal experimental use
spellingShingle	Rat sciatic nerve Myelinated nerve fibers Capillaries Anatomy and histology Animal experimental use Suaid,Carla Adelino Santos,Ana Paula Yamane,Fernanda de Oliveira Fazan,Valéria Paula Sassoli Barreira,Amilton Antunes Aspects of the Macro and Microscopic Anatomy of the Sciatic Nerve in Wistar Rats
description	The present study seeks to systematize morphological and morphometrical parameters and brings new data on the main branch of the lumbosacral plexus i.e., sciatic nerve in Wistar rats aged four and seven weeks. Sixteen female were divided into two groups, namely animals aged four weeks, and animals aged seven weeks. The specimens were studied at proximal and distal segments of the right hind limb sciatic nerves. Semi-thin transverse sections (0.25 µm thickness) were stained with 1 % toluidine blue, and the morphometric analysis was processed through the KS 400 software. Except for the number of fascicles and fascicular diameter, no differences were found between the proximal and distal segments. We observed differences when morphometric values were compared between 4- and 7- week old animals, with some exceptions (number of fascicles and myelinated fibers, and capillary area and number). The macroscopic data disagree with a previous description of the sciatic nerve being composed by two fascicles. Instead, sciatic nerve's only fascicle trifurcates or quadrifurcates at the distal third of the thigh. The total capillary area and density were calculated, and these are the first referential data for the sciatic nerve. Histograms of myelinated fiber and axons considering the animal ages were built. The results presented here are important because experimental studies, mainly studies on nerve regenerations require comparison with normal reliable data.
author	Suaid,Carla Adelino Santos,Ana Paula Yamane,Fernanda de Oliveira Fazan,Valéria Paula Sassoli Barreira,Amilton Antunes
author_facet	Suaid,Carla Adelino Santos,Ana Paula Yamane,Fernanda de Oliveira Fazan,Valéria Paula Sassoli Barreira,Amilton Antunes
author_sort	Suaid,Carla Adelino
title	Aspects of the Macro and Microscopic Anatomy of the Sciatic Nerve in Wistar Rats
title_short	Aspects of the Macro and Microscopic Anatomy of the Sciatic Nerve in Wistar Rats
title_full	Aspects of the Macro and Microscopic Anatomy of the Sciatic Nerve in Wistar Rats
title_fullStr	Aspects of the Macro and Microscopic Anatomy of the Sciatic Nerve in Wistar Rats
title_full_unstemmed	Aspects of the Macro and Microscopic Anatomy of the Sciatic Nerve in Wistar Rats
title_sort	aspects of the macro and microscopic anatomy of the sciatic nerve in wistar rats
publisher	Sociedad Chilena de Anatomía
publishDate	2016
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022016000300010
work_keys_str_mv	AT suaidcarlaadelino aspectsofthemacroandmicroscopicanatomyofthesciaticnerveinwistarrats AT santosanapaula aspectsofthemacroandmicroscopicanatomyofthesciaticnerveinwistarrats AT yamanefernandadeoliveira aspectsofthemacroandmicroscopicanatomyofthesciaticnerveinwistarrats AT fazanvaleriapaulasassoli aspectsofthemacroandmicroscopicanatomyofthesciaticnerveinwistarrats AT barreiraamiltonantunes aspectsofthemacroandmicroscopicanatomyofthesciaticnerveinwistarrats
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Aspects of the Macro and Microscopic Anatomy of the Sciatic Nerve in Wistar Rats

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