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Titolo:
PERIPHERAL FIELDS OF SYMPATHETIC VASOCONSTRICTOR NEURONS IN GUINEA-PIGS
Autore:
GIBBINS IL; HOFFMANN B; MORRIS JL;
Indirizzi:
FLINDERS UNIV S AUSTRALIA,DEPT ANAT & HISTOL,GPO BOX 2100 ADELAIDE SA5001 AUSTRALIA FLINDERS UNIV S AUSTRALIA,CTR NEUROSCI ADELAIDE SA 5001 AUSTRALIA
Titolo Testata:
Neuroscience letters
fascicolo: 2, volume: 248, anno: 1998,
pagine: 89 - 92
SICI:
0304-3940(1998)248:2<89:PFOSVN>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
DENDRITIC MORPHOLOGY; NEUROPEPTIDE CONTENT; RAT; PILOMOTOR; GANGLIA; ARTERY; AXONS; SIZE;
Keywords:
GUINEA-PIG; RETROGRADE AXONAL TRACING; IMMUNOHISTOCHEMISTRY; NEUROPEPTIDE Y; VASCULAR CONTROL;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
14
Recensione:
Indirizzi per estratti:
Citazione:
I.L. Gibbins et al., "PERIPHERAL FIELDS OF SYMPATHETIC VASOCONSTRICTOR NEURONS IN GUINEA-PIGS", Neuroscience letters, 248(2), 1998, pp. 89-92

Abstract

We have combined retrograde axonal tracing using Fast Blue and Dil with immunohistochemistry, to estimate the maximum size of peripheral fields of identified sympathetic vasoconstrictor neurons projecting to guinea-pig ear tips. Many neurons in the superior cervical ganglia werelabelled with both Fast Blue and Dil after dye injections up to 7 mm apart. Few neurons were labelled when dye injections were 8-10 mm apart. Neurons labelled with both Diland Fast Blue after dye injections 5-7 mm apart had, on average, larger somata (436 +/- 84 mu m(2), mean +/- SEM, n = 47) than neurons labelled with Dil only (388 + 11 mu m(2), n = 147). Typically, 50-100 neurons innervated a region of vasculature1 mm in diameter. We conclude that sympathetic vasoconstrictor neurons branch widely before converging on to their target blood vessels. Progressive recruitment of vasoconstrictor neurons with increasing fieldsize would provide an efficient mechanism for graded neural control of the circulation. (C) 1998 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 13/07/20 alle ore 17:48:45