The cytoprotective actions of long-chain mono-unsaturated fatty acids in pancreatic β-cells

Autor: Shalinee Dhayal, Eleftheria Diakogiannaki, Hannah J. Welters, Noel G. Morgan
Rok vydání: 2008
Předmět:
Zdroj: Biochemical Society Transactions. 36:905-908
ISSN: 1470-8752
0300-5127
DOI: 10.1042/bst0360905
Popis: Chronic exposure of pancreatic β-cells to long-chain fatty acids can cause loss of secretory function and enhanced apoptosis by a process of ‘lipotoxicity’, which may be a contributory factor to the rising incidence of Type 2 diabetes in humans. However, when incubated in vitro, β-cells respond differentially to long-chain saturated and mono-unsaturated fatty acids, suggesting that these molecules may regulate cell functionality by different mechanisms. In particular, it is clear that, whereas saturated fatty acids [e.g. palmitate (C16:0)] exert detrimental effects on β-cells, the equivalent mono-unsaturated species [e.g. palmitoleate (C16:1)] are well tolerated. Indeed, mono-unsaturated species are potently cytoprotective. The present review explores the differential effects of these various fatty acids on β-cell viability and considers the possible mechanisms involved in cytoprotection by mono-unsaturates.
Databáze: OpenAIRE