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  1. Thalidomide, a current teratogen in South America.

    Article - En anglais

    Thalidomide, mainly used for the treatment of leprosy, is a current teratogen in South America, and it is reasonable to assume that at present this situation is affecting many births in underdeveloped countries.

    Moreover, the potential re-marketing of thalidomide for the treatment of a large variety of diseases may extend the problem to the developed world.

    When the drug is available, the control of its intake during early pregnancy is very difficult since most pregnancies are unintended.

    The ongoing occurrence of thalidomide embryopathy cases went undetected by the ECLAMC, due to several factors :

    • (1) low populational coverage through this monitoring system ;

    • (2) pre-existence of the teratogen with its effects present in both baseline (expected) and monitored (observed) materials ;

    • and (3) lack of a defined phenotype to be monitored.

    Thus, if thalidomide re-enters the market throughout the world, due to the wide range of new applications, occurrence of phocomelia alone might not be sufficient to detect its effects.

    By a case-reference approach, the ECLAMC registered 34 thalidomide embryopathy cases born in South America after 1965 whose birthplaces correspond to endemic areas for leprosy.

    Phocomelia was found in five of eleven fully described cases.

    Thus, phocomelia alone is neither specific nor sufficient to serve as a suitable phenotype to survey the teratogenic effects of thalidomide. (...)

    Mots-clés Pascal : Thalidomide, Antilépreux, Toxicité, Tératogène, Pays en développement, Homme, Epidémiologie, Amérique du Sud, Amérique

    Mots-clés Pascal anglais : Thalidomide, Antileprous agent, Toxicity, Teratogen, Developing countries, Human, Epidemiology, South America, America

    Logo du centre Notice produite par :
    Inist-CNRS - Institut de l'Information Scientifique et Technique

    Cote : 97-0267752

    Code Inist : 002B02U10. Création : 15/07/1997.