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Insulin/adenosine axis linked signalling.

Luis Silva1, Mario Subiabre2, Joaquín Araos2

  • 1Cellular and Molecular Physiology Laboratory (CMPL), Division of Obstetrics and Gynaecology, School of Medicine, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, 8330024, Chile; Immunoendocrinology, Division of Medical Biology, Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen (UMCG), Groningen, The Netherlands.

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This review explores how adenosine receptors influence insulin

Keywords:
AdenosineEndotheliumInsulinSmooth muscleVascular

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Area of Science:

  • Cardiovascular Physiology
  • Endocrinology
  • Pharmacology

Background:

  • Blood flow regulation involves vasoactive molecules like insulin and adenosine.
  • Adenosine receptors (A1AR, A2AAR, A2BAR, A3AR) and insulin receptors mediate vascular responses.
  • Both insulin and adenosine have dual effects, causing vasodilation and vasoconstriction.

Purpose of the Study:

  • To review the potential involvement of adenosine receptors in modulating insulin's effects.
  • To investigate the interplay between adenosine receptors and insulin receptors in the human vasculature.
  • To understand how adenosine signaling influences insulin-mediated vascular functions.

Main Methods:

  • Literature review of studies on adenosine receptors, insulin signaling, and vascular function.
  • Analysis of mechanisms of vasodilation and vasoconstriction induced by adenosine and insulin.
  • Examination of the role of specific adenosine receptor subtypes (A2AAR, A2BAR, A1AR) in insulin's effects.

Main Results:

  • Adenosine receptor activation influences insulin's vascular effects, with A2AAR and A2BAR playing key roles in glucose and arginine transport.
  • A1AR activation may reduce insulin release from pancreatic β-cells.
  • The precise mechanisms, including receptor co-localization, underlying adenosine's modulation of insulin's vascular effects require further clarification.

Conclusions:

  • Adenosine receptors significantly modulate insulin's biological effects, particularly in the vasculature.
  • Understanding this interaction is crucial for comprehending blood flow regulation.
  • Further research is needed to elucidate the co-localization and transporter dynamics involved.