The factor V Leiden mutation is not a common cause of pregnancy-induced hypertension in Japan |
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Authors: | Kobashi G Yamada H Asano T Nagano S Hata A Kishi R Kondo K Fujimoto S |
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Affiliation: | Department of Public Health, Hokkaido University School of Medicine, Sapporo, Japan. |
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Abstract: | Recent studies in Caucasian populations have shown an association of the Leiden mutation in factor V with preeclampsia (PE). It consists of a substitution of a G (G1691) with an A (A1691) at nucleotide position 1691 in exon 10, resulting in arginine instead of glutamine at residue 506 at the factor V cleavage site for activated protein C (APC); it contributes to the resistance to APC. The purpose of this study was to determine whether the Leiden mutation is associated with pregnancy-induced hypertension (PIH), including PE, in Japanese women. We examined the genotypes of factor V of 71 Japanese patients with PIH and 109 controls. None of the 180 Japanese women carried the factor V Leiden mutation. To date, the factor V Leiden mutation is rare and not a common cause of PIH in Japan. The results may suggest that there is a significant ethnic difference in the role of the Leiden mutation in compounding the risk factors in the pathogenesis of PIH between Japanese and Caucasian populations. |
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