Comment on "Brain IRS2 signaling coordinates life span and nutrient homeostasis".

Selman, Colin; Lingard, Steven; Gems, David; Partridge, Linda; Withers, Dominic J · Science · 2008

editorial · Level V

Where this comes from

Abstract

Taguchi et al. (Reports, 20 July 2007, p. 369) reported that mice heterozygous for a null mutation in insulin receptor substrate-2 (Irs2) display a 17% increase in median life span. However, using the same mouse model, we find no evidence for life-span extension and suggest that the findings of Taguchi et al. were due to atypical life-span profiles in their study animals.

Medical subject headings