About this Medicine article
Nicotinamide prevents the development of diabetes in the cyclophosphamide-induced NOD mouse model by reducing beta-cell apoptosis by O'Brien, Bronwyn A.; Harmon, Brian V.; Cameron, Donald P.; Allan, David J. is a Medicine article available to read on EtoBox.
The development of diabetes in non-obese diabetic (NOD) mice, which normally takes between 3 and 7 months, can be accelerated by cyclophosphamide (CY) injections, with rapid progression to diabetes within only 2±3 weeks. This insulin-dependent diabetes mellitus (IDDM) can be prevented or delayed in CY-treated NOD mice by nicotinamide (NA). The present study was undertaken to determine the mode of cell death responsible for the development of IDDM in CYtreated male NOD mice and to investigate the effect of NA on beta-cell death. Apoptotic beta cells were present within the islets of Langerhans in haematoxylin and eosin-stained sections of the pancreata harvested from 3-and 12-week-old male NOD mice, from 8 h until 14 days after a single intraperitoneal injection of CY (150 mg/kg body weight). The maximum amount of betacell apoptosis in 3-week-old animals occurred 1±2 days after CY treatment (20 apoptotic cells per 100 islets), after which time levels of apoptosis declined steadily throughout the 14-day period studied. The incidence of beta-cell apoptosis in 12-week-old male NOD mice occurred in two peaks; the ®rst was recorded 8±24 h after CY treatment (30 apoptotic cells/100 islets
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- Author
- O'Brien, Bronwyn A.; Harmon, Brian V.; Cameron, Donald P.; Allan, David J.
- Publisher
- John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0022-3417)
- Published
- 2000
- Language
- EN
- Field
- Medicine (Health Sciences)