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Effects of long-term exposure to nicotinamide and sodium butyrate on growth, viability, and the function of clonal insulin secreting cells

Biomedical Sciences Research Institute Computer Science Research Institute Environmental Sciences Research Institute Nanotechnology & Advanced Materials Research Institute

Liu, HK, Green, BD, Flatt, Peter, McClenaghan, Neville and McCluskey, Janie (2004) Effects of long-term exposure to nicotinamide and sodium butyrate on growth, viability, and the function of clonal insulin secreting cells. ENDOCRINE RESEARCH, 30 (1). pp. 61-68. [Journal article]

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DOI: 10.1081/ERC-120028485

Abstract

The B vitamin nicotinamide (NIC), commonly known as niacin, is currently in trial as a potential means-of preventing Type 1 diabetes in first-degree relatives of affected individuals. Sodium butyrate (BUT) a common dietary micronutrient has also been reported to have beneficial effects on the differentiation and function of pancreatic beta cells. Cultured rat insulin-secreting BRIN-BD11 cells were used to investigate the effects of 3 days exposure to NIC (10 mM) and BUT (1 mM) both alone and in combination on beta cell function. Culture with NIC and/or BUT resulted in reduction of growth, insulin content and basal insulin secretion. BUT additionally decreased cell viability whilst NIC had no significant effect. Treatment with either agent abolished beta cell glucose sensitivity but insulin secretory responsiveness to a wide range of beta cell stimulators, including a depolarizing concentration of K+, elevation of Ca2+ and activation of adenylate cyclase and protein kinase C, were enhanced. These data illustrate that long term exposure to NIC and BUT has both positive and negative effects on the function of insulin-secreting cells.

Item Type:Journal article
Faculties and Schools:Faculty of Life and Health Sciences
Faculty of Life and Health Sciences > School of Biomedical Sciences
Research Institutes and Groups:Biomedical Sciences Research Institute
Biomedical Sciences Research Institute > Diabetes
ID Code:3023
Deposited By:Professor Peter Flatt
Deposited On:14 Jan 2010 15:48
Last Modified:15 Jun 2011 11:10

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