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Related Experiment Videos

Separan AP-273 and renal function: a novel natriuretic substance.

D D Smyth1, D E Blandford, D R Jones

  • 1Department of Pharmacology, University of Manitoba, Winnipeg, Canada.

Canadian Journal of Physiology and Pharmacology
|September 1, 1987
PubMed
Summary

Anionic polyacrylamide Separan AP-273 acts as a potent diuretic and natriuretic agent in rats. This study reveals drag-reducing polymers as a potential new class of compounds with significant effects on renal function.

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Area of Science:

  • Pharmacology
  • Nephrology
  • Polymer Science

Background:

  • Anionic polyacrylamide (Separan) has shown cardiovascular benefits in previous studies.
  • The impact of Separan on renal function remained unexplored.

Purpose of the Study:

  • To investigate the dose-response relationship between Separan AP-273 and renal excretion of electrolytes and water.
  • To determine if Separan AP-273 possesses diuretic and natriuretic properties.

Main Methods:

  • Intravenous administration of Separan AP-273 at varying doses (0.01–0.30 mg/kg) to anesthetized rats.
  • Measurement of urine volume, electrolyte excretion (sodium, potassium), osmolar clearance, and creatinine clearance.
  • Analysis of dose-dependent effects on renal parameters.

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Main Results:

  • Separan AP-273 demonstrated a dose-related increase in urine volume, sodium excretion, and osmolar clearance.
  • Significant increases (five- and seven-fold) in sodium and water excretion were observed at the maximal dose.
  • Potassium excretion showed a modest increase only at the highest dose, while creatinine clearance remained unchanged.

Conclusions:

  • Separan AP-273 is identified as a potent diuretic and natriuretic substance.
  • Drag-reducing polymers, like Separan, suggest a novel class of compounds with potential diuretic and natriuretic effects.
  • Further research into polymer-based diuretics is warranted.