PDX-1 haploinsufficiency limits the compensatory islet hyperplasia that occurs in response to insulin resistance

Abstract excerpt

Inadequate compensatory beta cell hyperplasia in insulin-resistant states triggers the development of overt diabetes. The mechanisms that underlie this crucial adaptive response are not fully defined. Here we show that the compensatory islet-growth response to insulin resistance in 2 models--insulin receptor (IR)/IR substrate-1 (IRS-1) double heterozygous mice and liver-specific IR KO (LIRKO) mice--is severely...

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