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Titolo:
Fall in the number of intracardiac neurons in aging rats
Autore:
Akamatsu, FE; De-Souza, RR; Liberti, EA;
Indirizzi:
Univ Sao Paulo, Inst Ciencias Biomed, Dept Anat, BR-05508900 Sao Paulo, Brazil Univ Sao Paulo Sao Paulo Brazil BR-05508900 BC05508900 Sao Paulo, Brazil Ibirapuera Univ, Sao Paulo, Brazil Ibirapuera Univ Sao Paulo BrazilIbirapuera Univ, Sao Paulo, Brazil Univ Sao Paulo, Inst Ciencias Biomed, Lab Auton Nervous Syst, BR-05508900 Sao Paulo, Brazil Univ Sao Paulo Sao Paulo Brazil BR-05508900 BC05508900 Sao Paulo, Brazil
Titolo Testata:
MECHANISMS OF AGEING AND DEVELOPMENT
fascicolo: 3, volume: 109, anno: 1999,
pagine: 153 - 161
SICI:
0047-6374(19990908)109:3<153:FITNOI>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
NERVE-CELL LOSS; SMALL-INTESTINE; POLARIZATION MICROSCOPY; MYENTERIC PLEXUS; GUINEA-PIGS; GANGLIA; HEART; AGE; INNERVATION; ANATOMY;
Keywords:
cardiac ganglia; neuron number and size; NADH-diaphorase; aging; rat;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
30
Recensione:
Indirizzi per estratti:
Indirizzo: De-Souza, RR Univ Sao Paulo, Inst Ciencias Biomed, Dept Anat, Av Prof Lineu Prestes 2415, BR-05508900 Sao Paulo, Brazil Univ Sao Paulo Av Prof Lineu Prestes 2415 Sao Paulo Brazil BR-05508900 BC
Citazione:
F.E. Akamatsu et al., "Fall in the number of intracardiac neurons in aging rats", MECH AGE D, 109(3), 1999, pp. 153-161

Abstract

The neurons of whole cardiac atria were stained using a NADH-diaphorase technique in young adult (3 months old) (GI) and aging rats (20 months old) (GII). Light microscopy revealed differences in the appearance of the neurons in the two groups. In GI, most ganglia contained 50-100 neurons while in GII, most ganglia usually contained 20 neurons. The mean total number of neurons in the atria of GII was 245 +/- 31, i.e. only 23% of the mean value in GI (1086 +/- 203). The mean size of the ganglionic neurons (area of maximum cell profile) was 702 mu m(2) in GI and 1065 mu m(2) in GII. Histological sections of the ganglia revealed that a capsule of collagen fibers sheaths each ganglion in both groups. In GII, the density of collagen fibers increases in the capsule and in the septa within the ganglia; yellow or red, type I collagen fibers predominate in this group. No elastic fibers were present in the cardiac ganglia of either group. It is suggested that in aging rats, structural changes and reorganization of the remnant neurons accompanyneuron reduction. (C) 1999 Elsevier Science Ireland Ltd. 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 19:46:46