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Titolo:
Lateral asymmetries in the trigeminal ganglion of the male rat
Autore:
Lagares, A; Avendano, C;
Indirizzi:
Univ Autonoma Madrid, Dept Morphol, Sch Med, Madrid 28029, Spain Univ Autonoma Madrid Madrid Spain 28029 ol, Sch Med, Madrid 28029, Spain
Titolo Testata:
BRAIN RESEARCH
fascicolo: 2, volume: 865, anno: 2000,
pagine: 202 - 210
SICI:
0006-8993(20000526)865:2<202:LAITTG>2.0.ZU;2-B
Fonte:
ISI
Lingua:
ENG
Soggetto:
DORSAL-ROOT GANGLION; STEREOLOGICAL METHODS; PATHOLOGICAL RESEARCH; SOMATOSENSORY CORTEX; NEURONS; NUMBER; PREFERENCE; DIAGNOSIS; PATTERNS; NUCLEUS;
Keywords:
left/right asymmetry; lateralization; sensory neurons; stereology; neuron size; neuron number;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
36
Recensione:
Indirizzi per estratti:
Indirizzo: Avendano, C Univ Autonoma Madrid, Dept Morphol, Sch Med, C Arzobispo Morcillo S-N, Madrid 28029, Spain Univ Autonoma Madrid C Arzobispo Morcillo S-N Madrid Spain 28029
Citazione:
A. Lagares e C. Avendano, "Lateral asymmetries in the trigeminal ganglion of the male rat", BRAIN RES, 865(2), 2000, pp. 202-210

Abstract

We have applied stereological methods to estimate the number and perikaryal size of primary sensory neurons in celloidin-embedded trigeminal ganglia of male albino rats, specifically looking for inter-individual and side variability. The mean total number of neurons per ganglion was 35,300, with a moderate variability among ganglia. On average, 66% of the neurons were classified as A-type and 34% as B-type. Although for individual cases there could be notable side differences in the number of neurons of each type, on apopulation basis these differences were not significant. Mean neuronal volume was four times larger for A- than for B-cells, and both populations exhibited a moderate variability among individuals. High intra-animal side differences were found for A-cells, which were on average a significant 23.5% larger in the right ganglia. B-cells did not show significant side differences. The distribution of individual volumes around the mean value was consistently skewed to the right, particularly in the case of A-cells, which partially overlapped with the largest B-cells. In the right ganglion the distribution of A-cells, but not of B-cells, showed a rightward bias, revealing the increase in bigger neurons. The existence of larger A-type neurons in the right trigeminal ganglion may provide a structural substrate fur some somesthetically based complex behaviors which are best performed by rats using their right vibrissae. (C) 2000 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 22/09/20 alle ore 20:27:25