open access

Vol 62, No 1 (2003)
ORIGINAL ARTICLES
Published online: 2002-12-04
Submitted: 2012-02-06
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The neuronal structure of the red nucleus in newborn guinea pigs

Anna Robak, Stanisław Szteyn, Krystyna Bogus-Nowakowska, Maciej Równiak
Folia Morphol 2003;62(1):1-9.

open access

Vol 62, No 1 (2003)
ORIGINAL ARTICLES
Published online: 2002-12-04
Submitted: 2012-02-06

Abstract

The preparations, stained according to the Nissl and Klüver-Barrera methods, were used to describe the topography and morphology of the red nucleus (RN) as well as the structure of the rubral perikarya in newborn (P0) guinea pigs. The Golgi impregnated preparations were used to distinguish types of neurons. RN is a uniform cell group and has the length from 740 to 860 µm. The Nissl stained perikarya were classified into three categories: big, medium-sized and small (A, B, C, respectively). The big perikarya, which contain a lot of tigroidal substance, were mainly observed at the caudal and ventral portions of RN. The small perikarya often have multiple nucleoli. The impregnated neurons were classified into 5 types: 1 - large, aspiny, rich-arborised multipolar cells, 2 - large and medium sized, spiny, rich-arborised fusiform or pear-shaped cells, 3 - medium-sized, spiny, rich-arborised rounded cells, 4 - medium-sized, spiny, richarborised bipolar cells, 5 - small and single medium-sized cells. The 5th type constitutes a heterogeneous population and also has neurons in different developmental stages. Intraspecies variations concerning both the length of RN and a number of the triangular perikarya of the red nucleus were observed in the examined guinea pigs.

Abstract

The preparations, stained according to the Nissl and Klüver-Barrera methods, were used to describe the topography and morphology of the red nucleus (RN) as well as the structure of the rubral perikarya in newborn (P0) guinea pigs. The Golgi impregnated preparations were used to distinguish types of neurons. RN is a uniform cell group and has the length from 740 to 860 µm. The Nissl stained perikarya were classified into three categories: big, medium-sized and small (A, B, C, respectively). The big perikarya, which contain a lot of tigroidal substance, were mainly observed at the caudal and ventral portions of RN. The small perikarya often have multiple nucleoli. The impregnated neurons were classified into 5 types: 1 - large, aspiny, rich-arborised multipolar cells, 2 - large and medium sized, spiny, rich-arborised fusiform or pear-shaped cells, 3 - medium-sized, spiny, rich-arborised rounded cells, 4 - medium-sized, spiny, richarborised bipolar cells, 5 - small and single medium-sized cells. The 5th type constitutes a heterogeneous population and also has neurons in different developmental stages. Intraspecies variations concerning both the length of RN and a number of the triangular perikarya of the red nucleus were observed in the examined guinea pigs.
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Keywords

red nucleus; morphology; types of neurons; Nissl and Golgi studies; neonates

About this article
Title

The neuronal structure of the red nucleus in newborn guinea pigs

Journal

Folia Morphologica

Issue

Vol 62, No 1 (2003)

Pages

1-9

Published online

2002-12-04

Bibliographic record

Folia Morphol 2003;62(1):1-9.

Keywords

red nucleus
morphology
types of neurons
Nissl and Golgi studies
neonates

Authors

Anna Robak
Stanisław Szteyn
Krystyna Bogus-Nowakowska
Maciej Równiak

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