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Titolo:
MELATONIN CYCLE IN THE FIDDLER-CRAB UCA PUGILATOR AND INFLUENCE OF MELATONIN ON LIMB REGENERATION
Autore:
TILDEN AR; RASMUSSEN P; AWANTANG RM; FURLAN S; GOLDSTEIN J; PALSGROVE M; SAUER A;
Indirizzi:
MACALESTER COLL,DEPT BIOL,1600 GRAND AVE ST PAUL MN 55105
Titolo Testata:
Journal of pineal research
fascicolo: 3, volume: 23, anno: 1997,
pagine: 142 - 147
SICI:
0742-3098(1997)23:3<142:MCITFU>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
CHROMATOGRAPHY-MASS SPECTROMETRY; RADIOIMMUNOASSAY; IDENTIFICATION; REPRODUCTION; ECDYSTEROIDS; MODULATION; INHIBITION; RHYTHMS; LINEUS; PLANTS;
Keywords:
MELATONIN; FIDDLER CRABS; UCA PUGILATOR; REGENERATION; EYESTALKS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
36
Recensione:
Indirizzi per estratti:
Citazione:
A.R. Tilden et al., "MELATONIN CYCLE IN THE FIDDLER-CRAB UCA PUGILATOR AND INFLUENCE OF MELATONIN ON LIMB REGENERATION", Journal of pineal research, 23(3), 1997, pp. 142-147

Abstract

Melatonin was measured over 24 hr in the eyestalks of Uca pugilator by means of radioimmunoassay; crabs were acclimatized either to a LD 12:12 photoperiod or constant darkness. A significant peak occurred at 13.00 hr in the LD 12:12 crabs. A photophase peak in melatonin has onlybeen reported in one other species, also a crustacean. In constant darkness, two melatonin peaks occurred, one at 16.00 hr and the other 12hr later; these results suggest that the melatonin cycle is a true circadian rhythm. HPLC with ultraviolet-visible detection was used to confirm the identity of melatonin immunoactivity. The influence of melatonin on regeneration of the walking legs was also examined: eyestalks were either removed or left intact, and limb bud length was measured every other day for at least 17 days in control and melatonin-treated crabs (60 mu g ml(-1) seawater). Melatonin significantly increased the rate of limb regeneration in both eyestalk-intact and eyestalk-removedgroups; this is contrary to results of regeneration studies in other phyla, in which similar melatonin concentrations inhibited regeneration.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/04/20 alle ore 12:26:27