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Study Reveals Obesity Disrupts Timing of Liver Metabolism During Starvation

University of Tokyo researchers find that while the liver's molecular network remains structurally intact, obesity impairs its temporal coordination in starvation responses.

In other words, even though the structure of the molecular network during starvation remained robust, it became temporally vulnerable to obesity. Credit: Neuroscience News
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Overview

  • Obesity disrupts the precise timing of metabolic responses in the liver during starvation, despite the molecular network remaining structurally robust.
  • Healthy mouse livers rely on hub molecules like ATP and AMP to initiate rapid, coordinated metabolic reactions under starvation conditions.
  • In obese mice, the temporal coordination driven by these hub molecules is lost, compromising metabolic adaptation to starvation.
  • The study utilized a novel multi-omic time-series analysis, capturing both structural and temporal dynamics of liver metabolism over multiple starvation intervals.
  • Researchers aim to extend their combined analytical approach to explore other metabolic processes, such as food intake and disease progression.