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Bladder purinergic receptors.

M R Ruggieri1, K E Whitmore, R M Levin

  • 1Department of Urology, Graduate Hospital of Philadelphia, Pennsvylania.

The Journal of Urology
|July 1, 1990
PubMed
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Human bladder contractions are partly mediated by a non-cholinergic, non-adrenergic system. Researchers developed a radioligand assay to study these purinergic receptors, potentially leading to new treatments for bladder dysfunction.

Area of Science:

  • Pharmacology
  • Urology
  • Neuroscience

Background:

  • Urinary bladder contractions involve cholinergic and non-cholinergic pathways.
  • Atropine resistance in human bladder contractions is debated, with some studies showing it is also tetrodotoxin resistant.

Purpose of the Study:

  • To investigate the atropine-resistant, tetrodotoxin-sensitive contractions in human bladder strips.
  • To develop a radioligand binding assay for purinergic receptors involved in bladder function.

Main Methods:

  • Utilized human bladder strips to test for atropine-resistant, tetrodotoxin-sensitive contractions.
  • Investigated the use of beta, gamma methylene ATP as a radioligand for purinergic receptors.
  • Developed a radioligand binding assay to quantify purinergic receptor density.

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Main Results:

  • Demonstrated that some human bladder strips exhibit atropine-resistant, tetrodotoxin-sensitive contractions.
  • Identified beta, gamma methylene ATP as a suitable radioligand due to its stability and potency.
  • Established a functional radioligand assay for purinergic receptors.

Conclusions:

  • The purinergic nervous system plays a role in human urinary bladder function.
  • The developed radioligand assay is crucial for understanding purinergic receptor involvement in bladder dysfunction.
  • This assay may facilitate the development of novel therapeutics targeting the purinergic system for bladder disorders.