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Titolo:
FMRFamide in the amphibian brain: A comprehensive survey
Autore:
Rastogi, RK; DAniello, B; Pinelli, C; Fiorentino, M; Di Fiore, MM; Di Meglio, M; Iela, L;
Indirizzi:
Univ Naples Federico II, Dept Zool, I-80134 Naples, Italy Univ Naples Federico II Naples Italy I-80134 Zool, I-80134 Naples, Italy Univ Gottingen, Sch Med, Dept Neuroanat, D-37025 Gottingen, Germany Univ Gottingen Gottingen Germany D-37025 nat, D-37025 Gottingen, Germany Univ Naples 2, Dept Life Sci, I-81100 Caserta, Italy Univ Naples 2 Caserta Italy I-81100 ept Life Sci, I-81100 Caserta, Italy
Titolo Testata:
MICROSCOPY RESEARCH AND TECHNIQUE
fascicolo: 3, volume: 54, anno: 2001,
pagine: 158 - 172
SICI:
1059-910X(20010801)54:3<158:FITABA>2.0.ZU;2-K
Fonte:
ISI
Lingua:
ENG
Soggetto:
GONADOTROPIN-RELEASING-HORMONE; FROG RANA-ESCULENTA; CENTRAL-NERVOUS-SYSTEM; GNRH-IMMUNOREACTIVE NEURONS; Y-LIKE-IMMUNOREACTIVITY; CLARIAS-BATRACHUS LINN; CELL-ADHESION MOLECULE; TERMINAL NERVE; OLFACTORY PLACODE; NEUROPEPTIDE-Y;
Keywords:
FMRFamide; neuropeptide; neurochemistry; development; olfactory placode; terminal nerve; central nervous system;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
86
Recensione:
Indirizzi per estratti:
Indirizzo: Rastogi, RK Univ Naples Federico II, Dept Zool, Via Mezzocannone 8, I-80134 Naples, Italy Univ Naples Federico II Via Mezzocannone 8 Naples Italy I-80134
Citazione:
R.K. Rastogi et al., "FMRFamide in the amphibian brain: A comprehensive survey", MICROSC RES, 54(3), 2001, pp. 158-172

Abstract

Mapping of FMRFamidergic neural circuitry in the amphibian brain has been done by immunohistochemical methods. Comparative evidence suggests that there are similarities and differences in the overall pattern of distribution of FMRFamide-ir elements in the brain among the three amphibian orders and within each order. FMRFamide is expressed in neurons in some circumscribed areas of the brain. A part of these neurons is concentrated in classical neurosecretory areas of the hypothalamus in a bilaterally symmetrical fashion. Similar neurons occur occasionally in the midbrain, but are virtually absent from the hindbrain. Anurans are unique among amphibians to show FMRFamide neurons in the medial septum and diagonal band of Broca. A viviparous gymnophione is known to possess a small population of such neurons in the dorsal thalamus. Together, the FMRFamide neurons contribute to an extensive fiber network throughout the amphibian brain. Descriptive developmental studies suggest that the rostral forebrain-located FMRFamide neurons originate in the olfactory placode and then migrate into the brain along the route of the vomeronasal-olfactory-terminal nerve complex. Olfactory placodal ablation in an anuran and a urodele provide experimental support to this contention. Other FMRFamide neuronal cell groups, in the hypothalamus and dorsal thalamus, are supposed to arise fi-om non-placodal precursors. The neuroanatomical distribution (projection of immunoreactive processes to areas of the fore-, mid-, and hindbrain as well as to cerebrospinal fluid, co-localization with other neuropeptides, and presence in the median eminence) has furnished morphological correlates of possible functions of FMRFamide in the amphibian CNS. While amphibian FMRFamide-like or structurally related peptidesremain to be isolated and characterized, the sum of the distribution pattern of FMRFamide-like immunoreactivity suggests that it may act as a neurotransmitter or a neuromodulator, and also may have endocrine regulatory functions. (C) 2001 Wiley-Liss, Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/04/20 alle ore 06:11:23