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Titolo:
Immunohistochemical and ultrastructural characterization of pinealocytes in sheep prenatal development
Autore:
Redondo, E; Masot, AJ; Franco, A; Regodon, S;
Indirizzi:
Univ Extremadura, Fac Vet Med, Dept Anat & Histol, Caceres 10071, Spain Univ Extremadura Caceres Spain 10071 Anat & Histol, Caceres 10071, Spain
Titolo Testata:
REVUE DE MEDECINE VETERINAIRE
fascicolo: 7, volume: 152, anno: 2001,
pagine: 535 - 544
SICI:
0035-1555(200107)152:7<535:IAUCOP>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
NEURON-SPECIFIC ENOLASE; SUPERIOR CERVICAL GANGLIONECTOMY; IN-SITU HYBRIDIZATION; CELL-TYPES; IMMUNOCYTOCHEMICAL DEMONSTRATION; POSTNATAL-DEVELOPMENT; RAT PINEALOCYTES; GLAND; RABBIT; HETEROGENEITY;
Keywords:
pineal gland; sheep; prenatal development; synaptophysin; non-neuron enolase; neuron-specific enolase;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
39
Recensione:
Indirizzi per estratti:
Indirizzo: Redondo, E Univ Extremadura, Fac Vet Med, Dept Anat & Histol, Caceres 10071, Spain Univ Extremadura Caceres Spain 10071 ol, Caceres 10071, Spain
Citazione:
E. Redondo et al., "Immunohistochemical and ultrastructural characterization of pinealocytes in sheep prenatal development", REV MED VET, 152(7), 2001, pp. 535-544

Abstract

. The ultrastructural characteristics and immunoreactivity to synaptophysin, neuron-specific enolase and non-neuron enolase of pinealocytes in 32 sheep embryos were studied from day 54 of development through birth. Embryos were divided into four age-groups : group 1 (54 to 67 days of prenatal development), group 2 (71 to 92 days), group 3 (98 to 113 days) and group 4 (118to 150 days). At 98 days of prenatal development and until birth, ultrastructural morphological characteristics reflected the hypothetical functional activity of pinealocytes during intrauterine life. These characteristics consisted in a gradual increase (in line with ontogenesis) of the organelles involved in synthesis, perivascular arrangement of the terminal bulbs of the pinealocytic processes and the presence of gap junctions between the terminal bulbs ofthese processes. The immunohistochemical characteristics of these cells during prenatal life confirm the neuroendocrine nature of pinealocytes; their potential neurosecretory capacity and their greater affinity for synaptophysin (SYN) and non-neuron enolase (NNE) than for neuron-specific enolase (NSE). Differences in numeric density and distribution over the pineal surface, together with greater abundance of cells staining positively to the three markers used inthe medullar area. suggest that the pineal cortex and medulla are functionally dissimilar.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 06/04/20 alle ore 00:58:45