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Studies of renal function in animals chronically treated with apomorphine
S T Gancher1, W Bennett, J English
1Department of Neurology, Oregon Health Sciences University, Portland 97201.
Summary
Parenteral apomorphine administration in rats did not cause kidney damage. Studies found no changes in renal function or histology, indicating apomorphine is safe for kidney health when given via injection.
Area of Science:
- Pharmacology
- Nephrology
- Toxicology
Background:
- Oral apomorphine has been linked to potential kidney toxicity.
- Understanding the renal effects of parenteral apomorphine is crucial for patient safety.
Purpose of the Study:
- To investigate the renal effects of two-week subcutaneous apomorphine infusion in rats.
- To determine if parenteral apomorphine causes nephrotoxicity.
Main Methods:
- Subcutaneous infusion of apomorphine in rats for two weeks.
- Assessment of renal cortical uptake of organic cation and anion.
- Measurement of creatinine clearance and electrolyte excretion.
- Renal histology and tubular enzyme analysis.
Main Results:
- No significant changes in renal cortical uptake of tetraethyl ammonium or para-hippuric acid.
- Creatinine clearance and fractional excretion of sodium and potassium remained unchanged.
- Renal histology showed no drug-specific alterations.
- A minor increase in urinary N-acetylglucosaminidase was observed, but other tubular enzymes were unaffected.
Conclusions:
- Parenteral administration of apomorphine in rats is not associated with significant renal toxicity.
- The observed minor changes in urinary enzymes do not indicate substantial tubular damage.
- Apomorphine administered subcutaneously appears safe for renal function.