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Clinical Chemistry 28: 1148-1152, 1982;
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Clinical Chemistry, Vol 28, 1148-1152, Copyright © 1982 by American Association for Clinical Chemistry

Chloroquine and its metabolites in human cord blood, neonatal blood, and urine after maternal medication

EE Essien and GC Afamefuna

Chloroquine, its N-dealkylated metabolites, and chloroquine N-oxides were detected in the urine of pregnant women who were receiving chloroquine medication whereas chloroquine and its nonpolar metabolites, desethyl- and didesethylchloroquine and 7-chloro-4- aminoquinoline, have been found in the neonates' urine, blood, and cord blood. We used thin-layer chromatography to separate chloroquine and its metabolites after their extraction from biological fluids. These compounds were identified by comparing their chromatographic and ultraviolet spectrophotometric characteristics with those of reference compounds. That chloroquine and its relatively nonpolar metabolites (including one without the alkyl side-chain, 7-chloro-4-aminoquinoline) cross the placenta is demonstrated by the presence of these compounds in the cord blood, neonatal systemic blood, and neonatal urine. The selective transfer of the compounds in the cord blood, neonatal system blood, and neonatal urine. The selective transfer of the compounds across the placenta and the clinical implications of these findings are discussed.


The following articles in journals at HighWire Press have cited this article:


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 LupusHome page
E F Borba, J R Turrini-Filho, K A. Kuruma, C Bertola, M E. Pedalini, M C Lorenzi, and E Bonfa
Chloroquine gestational use in systemic lupus erythematosus: assessing the risk of child ototoxicity by pure tone audiometry
Lupus, April 1, 2004; 13(4): 223 - 227.
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Copyright © 1982 by the American Association for Clinical Chemistry.