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Titolo:
THE SPATIAL-ORGANIZATION OF TYROSINE HYDROXYLASE-IMMUNOREACTIVE AMACRINE CELLS IN THE CHICKEN RETINA AND THE CONSEQUENCES OF MYOPIA
Autore:
TEAKLE EM; WILDSOET CF; VANEY DI;
Indirizzi:
UNIV QUEENSLAND,VISION TOUCH & HEARING RES CTR,DEPT PHYSIOL & PHARMACOL BRISBANE QLD 4072 AUSTRALIA UNIV QUEENSLAND,VISION TOUCH & HEARING RES CTR,DEPT PHYSIOL & PHARMACOL BRISBANE QLD 4072 AUSTRALIA QUEENSLAND UNIV TECHNOL,SCH OPTOMETRY BRISBANE QLD 4001 AUSTRALIA
Titolo Testata:
Vision research
fascicolo: 17, volume: 33, anno: 1993,
pagine: 2383 - 2396
SICI:
0042-6989(1993)33:17<2383:TSOTHA>2.0.ZU;2-D
Fonte:
ISI
Lingua:
ENG
Soggetto:
DISPLACED GANGLION-CELLS; RHESUS-MONKEY RETINA; ADULT GOLDFISH EYE; DOPAMINERGIC-NEURONS; DENDRITIC MORPHOLOGY; MAMMALIAN RETINA; TURTLE RETINA; RABBIT RETINA; AVIAN RETINA; CAT RETINA;
Keywords:
CHICKEN RETINA; DOPAMINERGIC AMACRINE CELLS; DENDRITIC GROWTH; MYOPIA;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
65
Recensione:
Indirizzi per estratti:
Citazione:
E.M. Teakle et al., "THE SPATIAL-ORGANIZATION OF TYROSINE HYDROXYLASE-IMMUNOREACTIVE AMACRINE CELLS IN THE CHICKEN RETINA AND THE CONSEQUENCES OF MYOPIA", Vision research, 33(17), 1993, pp. 2383-2396

Abstract

We examined the spatial organization of the putative dopaminergic amacrine cells in the chicken retina and how this organization was affected by myopic eye enlargement. Myopia was produced by monocular lid suture for 4-7 months from hatching. Dopaminergic amacrine cells (TH-IR) were labelled by tyrosine hydroxylase immunohistochemistry. The somataof the TH-IR cells were usually located at the inner border of the inner nuclear layer; they gave rise to a dense plexus in stratum 1 (S1) of the inner plexiform layer, to a sparse plexus in stratum 3 (S3), and to short spiny dendrites at the border of strata 4 and 5 (S4/S5). The long thin processes in S1 and S3 could seldom be traced to their cell of origin, whereas the S4/S5 dendrites formed discrete fields that tiled the retina with little overlap. Lid suture resulted in retinal expansion of between 25-70%, but the total number of TH-IR amacrine cells was unaltered. Per retina, there were about 4700 TH-IR amacrine cells which showed a 3:1 density gradient from central to peripheral retina. The size of the S4/S5 dendritic fields increased proportionately inthe expanded retinae, thus maintaining their coverage across the retina. The increase was achieved through scaled growth of the S4/S5 dendrites, involving both terminal and non-terminal dendrites. These findings suggest that the expansion of retinal neurons during myopia occurred through normal, albeit excessive, growth mechanisms.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 03/07/20 alle ore 15:38:12