INVESTIGADORES
CAVIEDES VIDAL Enrique Juan Raul
artículos
Título:
Intestinal α –glycosidase transcriptional responses during development and diet adjustment in altricial birds
Autor/es:
GATICA-SOSA, CLAUDIA; BRZEK, PAWEL; MAGALLANES, MELISA; KARASOV, WILLIAM H.; CAVIEDES-VIDAL, ENRIQUE
Revista:
JOURNAL OF EXPERIMENTAL BIOLOGY
Editorial:
COMPANY OF BIOLOGISTS LTD
Referencias:
Año: 2018
ISSN:
0022-0949
Resumen:
We describe developmental changes in maltasic activity and its mRNA through adulthood, andin response to increase in dietary starch. We studied house sparrows (HOSP; Passer domesticusL.), which undergo a natural switch from insects to starch-containing seed diet duringdevelopment, and zebra finch (ZEBF; Taeniopygia guttata V.), which have a relatively fixedstarchy-seed diet during development. In ZEBF, in whom maltasic activity increased with agebut not with dietary starch, α ?glycosidase (AG) mRNA was not affected by either age or dietarystarch level. In HOSP nestlings, in whom maltasic activity increased with age and with addedstarch, AG mRNA was higher on diet with added starch but did not increase with age. Theseresults are consistent with the idea that the apparent programmed developmental increase inmaltasic activity is not mainly under transcriptional control of AG mRNA, whereas induction ofmaltasic activity by increased dietary starch is.
