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Titolo:
BIRTH-DATES OF NEURONS IN THE RETINAL GANGLION-CELL LAYER OF THE FERRET
Autore:
REESE BE; THOMPSON WF; PEDUZZI JD;
Indirizzi:
UNIV CALIF SANTA BARBARA,NEUROSCI RES INST SANTA BARBARA CA 93106 UNIV CALIF SANTA BARBARA,DEPT PSYCHOL SANTA BARBARA CA 93106 UNIV ALABAMA,DEPT PHYSIOL OPT BIRMINGHAM AL 35294
Titolo Testata:
Journal of comparative neurology
fascicolo: 4, volume: 341, anno: 1994,
pagine: 464 - 475
SICI:
0021-9967(1994)341:4<464:BONITR>2.0.ZU;2-8
Fonte:
ISI
Lingua:
ENG
Soggetto:
FIBER DIAMETER CLASSES; OPTIC TRACT; CAT RETINA; DECUSSATION PATTERNS; CENTRAL PROJECTIONS; CHIASMATIC PATHWAY; AREA CENTRALIS; MORPHOLOGY; GENESIS; ORGANIZATION;
Keywords:
AREA CENTRALIS; OPTIC CHIASM; OPTIC TRACT; DECUSSATION PATTERN; DISPLACED AMACRINE CELL;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
42
Recensione:
Indirizzi per estratti:
Citazione:
B.E. Reese et al., "BIRTH-DATES OF NEURONS IN THE RETINAL GANGLION-CELL LAYER OF THE FERRET", Journal of comparative neurology, 341(4), 1994, pp. 464-475

Abstract

The present study determined the temporal and spatial patterns of genesis for neurons of different sizes in the retinal ganglion cell layerof the ferret. Fetal ferrets were exposed to tritiated thymidine on embryonic trays E-22 through E-36. One to 3 months after birth, they were perfused and their retinae dissected, and autoradiographs were prepared from resin-embedded sections throughout the entire flattened retinal ganglion cell layer. Soma size differences in conjunction with separate retrograde labeling and calbindin immunocytochemical studies were used as criteria for identifying different retinal ganglion cell subtypes in juvenile and adult ferrets. Neurons of different sizes in theganglion cell layer were generated at different stages during development. Medium sized cells were generated primarily between E-22 and E-26; the largest cells were generated between E-24 and E-29; small cellswere generated between E-26 and E-32; and very small cells were generated between E-29 and E-36. The former three groups were interpreted to be three subtypes of retinal ganglion cells, while the latter group was interpreted to be displaced amacrine cells. This temporal order ofthe genesis of ganglion cell classes is consistent with the spatial ordering of their fibers in the mature optic chiasm and tract, and it is consistent with the developmental change in decussation pattern recently shown in the optic pathway of embryonic ferrets. The spatial pattern of genesis suggests that ganglion cells of a particular class are added to the ganglion cell layer in a centroperipheral fashion initiated in the dorsocentral retina nasal to the area centralis. No evidencewas found for a wave of ganglion cell addition that proceeded in a spiralling pattern around the area centralis, as has been reported in the cat. (C) 1994 Wiley-Liss, Inc.

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Documento generato il 25/09/20 alle ore 00:23:45