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Titolo:
ULTRASTRUCTURAL CHARACTERISTICS OF ZEBRAFISH SPINAL MOTONEURONS INNERVATING GLYCOLYTIC WHITE, AND OXIDATIVE RED AND INTERMEDIATE MUSCLE-FIBERS
Autore:
VANASSELT E; DEGRAAF F; VANRAAMSDONK W;
Indirizzi:
UNIV AMSTERDAM,DEPT EXPTL ZOOL,KRUISLAAN 320 1098 501 AMSTERDAM NETHERLANDS UNIV AMSTERDAM,DEPT EXPTL ZOOL,KRUISLAAN 320 1098 501 AMSTERDAM NETHERLANDS
Titolo Testata:
Acta histochemica
fascicolo: 1, volume: 95, anno: 1993,
pagine: 31 - 44
SICI:
0065-1281(1993)95:1<31:UCOZSM>2.0.ZU;2-O
Fonte:
ISI
Lingua:
ENG
Soggetto:
TELEOST BRACHYDANIO-RERIO; ALPHA-MOTONEURONS; MOTO-NEURONS; POSTHATCHING DEVELOPMENT; HISTOCHEMICAL PROFILES; GASTROCNEMIUS-MUSCLE; GAMMA-MOTONEURONS; CAT; SYNAPTOLOGY; SYNAPSES;
Keywords:
ZEBRAFISH; MOTONEURONS; SPINAL CORD; ULTRASTRUCTURE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
45
Recensione:
Indirizzi per estratti:
Citazione:
E. Vanasselt et al., "ULTRASTRUCTURAL CHARACTERISTICS OF ZEBRAFISH SPINAL MOTONEURONS INNERVATING GLYCOLYTIC WHITE, AND OXIDATIVE RED AND INTERMEDIATE MUSCLE-FIBERS", Acta histochemica, 95(1), 1993, pp. 31-44

Abstract

Spinal motoneurons in the zebrafish were classified using morphological criteria. Dorsomedial white motoneurons which innervate the fast, glycolytic white muscle fiber compartment were distinguished from ventrolateral red and intermediate motoneurons which innervate the slow, oxidative, red and intermediate muscle fiber compartments. Synapses on cell somata and cell organelles were studied in detail. The motoneuronswhich innervate white muscle fibers (W motoneurons) are considerably larger than those which innervate red and intermediate muscle fibers (RI motoneurons; W > RI). Significant differences were also found in the size of the nucleus (W > RI) and in the ratio size nucleus/size soma(W < RI); small differences were found regarding endoplasmic reticulum (W > RI) and mitochondria (W < RI). There were no differences in synaptic apposition length or perentage of terminals with flat vesicles. Small differences were discerned with regard to covering percentages (W < RI) and percentage of terminals with round vesicles (W > RI). Terminals with dense cored vesicles appeared on W motoneuron somata only. Within the motoneuron population, there was a positive correlation between the coverage of terminals containing flat vesicles and the perimeter of the cell soma. In RI motoneurons, there was a positive correlation between the perimeter of the cell and the amount of endoplasmic reticulum. A negative correlation was found between the RI cell perimeter and mitochondria, which is in line with a high succinate dehydrogenase activity in small cells.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/09/20 alle ore 18:22:15