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Acute chloroquine administration increases renal sodium excretion
C T Musabayane1, C E Ndhlovu, G Mamutse
1Faculty of Medicine, Department of Physiology, University of Zimbabwe, Harare.
The Journal of Tropical Medicine and Hygiene
|October 1, 1993
Summary
Acute chloroquine administration increases sodium (Na+) and chloride (Cl-) excretion in rats without affecting urine flow or blood pressure. This suggests a potential impact on kidney function and electrolyte balance.
Area of Science:
- Nephrology
- Pharmacology
- Physiology
Background:
- Chloroquine is an antimalarial drug with known side effects.
- Understanding its effects on renal function is crucial for patient safety.
Purpose of the Study:
- To investigate the impact of intravenous chloroquine infusion on renal fluid and electrolyte handling in rats.
- To determine if chloroquine affects blood pressure and glomerular filtration rate.
Main Methods:
- Intravenous infusion of chloroquine at varying doses (0.015, 0.030, 1.25 µg/min) in saline-infused, Inactin-anesthetized rats.
- Monitoring of blood pressure, glomerular filtration rate, urine flow, and electrolyte excretion (Na+, Cl-).
- Measurement of plasma aldosterone and corticosterone levels.
Main Results:
- Chloroquine infusion did not alter blood pressure or glomerular filtration rate.
- Significant increases in sodium (Na+) and chloride (Cl-) excretion were observed.
- Urine flow and plasma hormone levels remained unaffected.
Conclusions:
- Acute chloroquine administration induces natriuresis (increased Na+ excretion).
- The mechanism likely involves altered tubular handling of Na+.
- Further research is needed to elucidate the precise mechanism.