Protective mechanism of glucose against alloxan-induced beta-cell damage: pivotal role of ATP
Experimental & Molecular Medicine
;
: 12-17, 2000.
Article
Dans Anglais
| WPRIM
| ID: wpr-16701
ABSTRACT
Glucose prevents the development of diabetes induced by alloxan. In the present study, the protective mechanism of glucose against alloxan-induced beta-cell damage was investigated using HIT-T 15 cell, a Syrian hamster transformed beta-cell line. Alloxan caused beta-cell damages with DNA fragmentation, inhibition of glucose-stimulated insulin release, and decrease of cellular ATP level, but all of these beta-cell damages by alloxan were prevented by the presence of 20 mM glucose. Oligomycin, a specific inhibitor of ATP synthase, completely abolished the protective effects of glucose against alloxan-induced cell damage. Furthermore, treatment of nuclei isolated from HIT-T15 cells with ATP significantly prevented the DNA fragmentation induced by Ca2+. The results indicate that ATP produced during glucose metabolism plays a pivotal role in the protection of glucose against alloxan-induced beta-cell damage.
Texte intégral:
Disponible
Indice:
WPRIM (Pacifique occidental)
Sujet Principal:
Oligomycines
/
ADN
/
Lymphocytes B
/
Lignée cellulaire
/
Noyau de la cellule
/
Survie cellulaire
/
Adénosine triphosphate
/
Calcium
/
Acide egtazique
/
Relation dose-effet des médicaments
langue:
Anglais
Texte intégral:
Experimental & Molecular Medicine
Année:
2000
Type:
Article
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