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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

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Swain, A. et al.

Mouse Dax1 expression is consistent with a role in sex determination as well as in adrenal and hypothalamus function.

Duplications of a chromosome Xp21 locus DSS (Dosage Sensitive Sex reversal) are associated with male to female sex reversal. An unusual member of the nuclear hormone receptor superfamily, DAX1, maps to the DSS critical region and is responsible for X-linked adrenal hypoplasia congenita. Here we describe the isolation of the mouse Dax1 gene and its pattern of expression during development. Expression was detected in the first stages of gonadal and adrenal differentiation and in the developing hypothalamus. Moreover, Dax1 expression is down-regulated coincident with overt differentiation in the testis, but persists in the developing ovary. Comparison of the predicted protein products of the human and mouse genes show that specific domains are evolving rapidly. Our results suggest a basis for adrenal insufficiency and hypogonadotropic hypogonadism in males affected by adrenal hypoplasia congenita and are consistent with a role for DAX1 in gonadal sex determination.[1]

References

Mouse Dax1 expression is consistent with a role in sex determination as well as in adrenal and hypothalamus function. Swain, A., Zanaria, E., Hacker, A., Lovell-Badge, R., Camerino, G. Nat. Genet. (1996) [Pubmed]

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