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Br Med J (Clin Res Ed). 1986 May 17; 292(6531): 1319–1321.
PMCID: PMC1340320

Hypoglycaemia and antimalarial drugs: quinidine and release of insulin.

Abstract

Life threatening hypoglycaemia has been closely associated with the use of quinine, but the effect of quinidine and the synthetic antimalarials on the homoeostasis of glucose has not been investigated. In volunteers given a fixed dose of 500 mg base and patients with malaria given a quinidine loading dose (15 mg base/kg) mean (SEM) plasma insulin concentrations rose from 6.1 (1.5) mU/l to 10.9 (4.4) mU/l (p less than 0.02) and 10.4 (2.0) mU/l to 18.5 (5.3) mU/l (p less than 0.04), respectively. Plasma glucose concentrations fell from 4.5 (1.1) mmol/l (81 (20) mg/100 ml) to 4.0 (0.3) mmol/l (72 (5) mg/100 ml) in volunteers (p less than 0.04) and from 5.7 (1.3) mmol/l (102 (23) mg/100 ml) to 4.8 (1.6) mmol/l (86 (29) mg/100 ml) in patients (p less than 0.05). One of two patients with cerebral malaria and acute renal failure became profoundly hypoglycaemic (plasma glucose concentration 1.4 mmol/l (25 mg/100 ml), plasma insulin concentration 3.1 mU/l). Hypoglycaemia may occur in any severely ill fasting patient given parenteral quinidine. The other antimalarials tested, chloroquine, amodiaquine, mefloquine, and halofantrine, did not stimulate the release of insulin, an important advantage that should be taken into account when treatment is chosen for Plasmodium falciparum malaria.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.
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Articles from British Medical Journal (Clinical Research Ed.) are provided here courtesy of BMJ Publishing Group