Comment on "Differential rescue of light- and food-entrainable circadian rhythms".

Mistlberger, Ralph E; Yamazaki, Shin; Pendergast, Julie S; Landry, Glenn J; Takumi, Toru; Nakamura, Wataru · Science · 2008

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Abstract

Fuller et al. (Reports, 23 May 2008, p. 1074) reported that the dorsomedial hypothalamus contains a Bmal1-based oscillator that can drive food-entrained circadian rhythms. We report that mice bearing a null mutation of Bmal1 exhibit normal food-anticipatory circadian rhythms. Lack of food anticipation in Bmal1-/- mice reported by Fuller et al. may reflect morbidity due to weight loss, thus raising questions about their conclusions.

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