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Nonoptimal Temperature Exposure and Sphingolipid Metabolism: Implications for Cardiovascular Risk.

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Nonoptimal temperature exposure significantly impacts sphingolipid metabolism, potentially increasing cardiovascular disease risk. Sphingolipids may serve as biomarkers for temperature-related cardiovascular health issues.

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Area of Science:

  • Environmental Health
  • Lipidomics
  • Cardiovascular Disease Research

Background:

  • Nonoptimal temperature exposure is linked to increased cardiovascular disease (CVD) risk.
  • The specific mechanisms connecting temperature and CVD remain unclear.
  • Sphingolipids are bioactive lipids crucial in CVD pathophysiology.

Purpose of the Study:

  • To investigate the association between ambient temperature and sphingolipid metabolism markers.
  • To explore the biological implications of these associations.
  • To identify potential biomarkers for temperature-induced cardiovascular risk.

Main Methods:

  • A panel study involving 251 participants in Beijing, China.
  • Continuous monitoring of personal environmental temperature.
  • Transcriptomic and lipidomic analyses to assess sphingolipid metabolism.
  • Generalized additive mixed models and Spearman's correlation analysis.

Main Results:

  • A near "V-shaped" relationship was observed between daily average temperature and most sphingolipids.
  • Cold or heat exposure (1°C change) increased sphingolipids by up to 1.4% and 0.9%, respectively.
  • Temperature exposure upregulated genes involved in sphingolipid metabolism.
  • Sphingolipids significantly correlated with established CVD markers.

Conclusions:

  • Nonoptimal temperatures significantly alter human sphingolipid metabolism.
  • Sphingolipids may act as indicators of cardiovascular risk stemming from nonoptimal temperature exposure.
  • This research highlights a novel pathway linking environmental temperature and cardiovascular health.