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Diabetes Insipidus II: Pathophysiology01:22

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The Use of Cystometry in Small Rodents: A Study of Bladder Chemosensation
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Published on: August 21, 2012

Vasopressin receptors in voiding dysfunction.

Sailaja Pisipati1, Hashim Hashim

  • 1Royal Cornwall Hospital, Truro, Cornwall, TR1 3UD, UK. sailaja13in@yahoo.com

Handbook of Experimental Pharmacology
|February 4, 2011
PubMed
Summary
This summary is machine-generated.

Arginine vasopressin (AVP) regulates body fluid balance and has varied functions. Its receptors mediate effects, leading to treatments for conditions like diabetes insipidus and heart failure.

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Area of Science:

  • Endocrinology
  • Neuropeptide signaling
  • Pharmacology

Background:

  • Arginine vasopressin (AVP), also known as anti-diuretic hormone, is a hypothalamic neuropeptide crucial for osmoregulation and fluid homeostasis.
  • AVP exerts effects via three G-protein-coupled receptors: V(1a), V(1b), and V(2).
  • AVP also functions as a vasoconstrictor and influences cognitive functions and metabolism.

Purpose of the Study:

  • To explore the physiological roles of arginine vasopressin (AVP) and its receptor interactions.
  • To review the therapeutic applications of AVP receptor agonists and antagonists.
  • To highlight the clinical potential of modulating AVP signaling in various diseases.

Main Methods:

  • Review of literature on AVP physiology and pharmacology.
  • Analysis of the mechanisms of action for AVP receptor subtypes.
  • Examination of clinical evidence for AVP-targeting therapies.

Main Results:

  • V(2) receptor activation mediates water conservation, utilized in treating conditions like nocturnal polyuria and central diabetes insipidus with desmopressin.
  • Vasopressin receptor antagonists, by blocking V(2) receptors, induce aquaresis and correct hyponatremia.
  • AVP antagonists show potential clinical benefits in managing acute and chronic heart failure.

Conclusions:

  • AVP signaling pathways offer significant therapeutic targets.
  • Desmopressin (an AVP agonist) is effective for urological and hematological disorders.
  • AVP antagonists represent a promising strategy for fluid balance disorders and heart failure.