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    Hum Mol Genet. 2000 Jan 22;9(2):227-36.

    A mouse model for valproate teratogenicity: parental effects, homeotic transformations, and altered HOX expression.

    Faiella A, Wernig M, Consalez GG, Hostick U, Hofmann C, Hustert E, Boncinelli E, Balling R, Nadeau JH.

    Source

    DIBIT and Department of Neuroscience, San Raffaele Scientific Institute, Milan, Italy.

    Abstract

    Valproate (VPA) is one of several effective anti-epileptic and mood-stabilizing drugs, many of which are also potent teratogens in humans and several other mammalian species. Variable teratogenicity among inbred strains of laboratory mice suggests that genetic factors influence susceptibility. While studying the genetic basis for VPA teratogenicity in mice, we discovered that parental factors influence fetal susceptibility to induced malformations. Detailed examination of these malformations revealed that many were homeotic transformations. To test whether VPA, like retinoic acid (RA), alters HOX expression, pluripotent human embryonal carcinoma cells were treated with VPA or RA and Hox expression assessed. Altered expression of specific Hox genes may thus account for the homeotic transformations and other malformations found in VPA-treated fetuses.

    PMID:
    10607833
    [PubMed - indexed for MEDLINE]
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