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PPARs and the complex journey to obesity.

Ronald M Evans1, Grant D Barish, Yong-Xu Wang

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Obesity, dyslipidemia, and diabetes are global epidemics. Key regulators of energy balance and insulin signaling, like peroxisome proliferator-activated receptors (PPARs), are crucial for understanding and treating metabolic disorders.

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Area of Science:

  • Metabolic diseases
  • Endocrinology
  • Molecular biology

Background:

  • Obesity, dyslipidemia, and diabetes (Syndrome X) represent significant global health challenges.
  • Recent advances have illuminated key regulators of energy balance and insulin signaling.
  • These discoveries have transformed the understanding of fat and sugar metabolism.

Purpose of the Study:

  • To highlight the role of peroxisome proliferator-activated receptors (PPARs) in metabolic homeostasis.
  • To emphasize PPARs as therapeutic targets for metabolic diseases.
  • To discuss emerging pharmacologic strategies and research questions in metabolic disease treatment.

Main Methods:

  • Review of recent molecular and genetic studies on energy balance and insulin signaling.
  • Analysis of the function of PPAR-alpha, PPAR-gamma, and PPAR-delta in lipid and glucose metabolism.
  • Synthesis of current knowledge on the therapeutic potential of PPARs.

Main Results:

  • PPARs (PPAR-alpha, PPAR-gamma, PPAR-delta) are identified as critical 'lipid-sensing' regulators.
  • These receptors play a diverse role in maintaining lipid and glucose homeostasis.
  • The molecular mechanisms underlying PPAR function are increasingly understood.

Conclusions:

  • PPARs are central to metabolic regulation and represent viable therapeutic targets.
  • A deeper understanding of molecular underpinnings facilitates the development of new treatments for metabolic diseases.
  • Further research is needed to explore novel pharmacologic approaches and address remaining questions.