Integrated respirometry and metabolomics unveil circadian metabolic dynamics in Drosophila

This important study investigates how sleep loss and circadian disruption affect whole-organ metabolism in flies (Drosophila melanogaster) and reports that wild-type flies align metabolism in anticipation of diurnal rhythm, while mutant flies with impaired sleep or circadian function shift to reactive or misaligned metabolism. The integration of chamber-based flow-through respirometry with LC-MS metabolomics is innovative, and the significance of the findings is significant. The strength of evidence needed to support the conclusions is generally convincing, although the absence of direct measures of locomotor activity makes it difficult to separate intrinsic metabolic changes from potential behavioral differences in mutants.

https://doi.org/10.7554/eLife.108681.3.sa0 Significance of the findings: