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  • Title: Fujiwara trait: the first case of kininogen deficiency in Japan.
    Author: Oh-Ishi S, Ueno A, Uchida Y, Katori M, Hayashi H, Koya H, Kitajima K, Kimura I.
    Journal: Adv Exp Med Biol; 1979; 120B():93-9. PubMed ID: 517263.
    Abstract:
    Asymptomatic identical twins were found to show the prolonged activated partial thromboplastin time, which was corrected by addition of normal, Hageman factor deficient or Fletcher trait plasma but not corrected by Fitzgerald or Williams plasma. The prolonged activated partial thromboplastin time was also corrected by addition of highly purified bovine high molecular weight kininogen but not by low molecular weight kininogen. When total kininogen was measured as the amount of bradykinin released by trypsin on acid treated plasma, only trace amount was detected in Fujiwara and Williams plasmas, although Fitzgerald plasma showed approximately 50% of the total kininogen of normal plasma level. Acetone-kaolin activated amidase activity of plasma kallikrein was not generated by Fujiwara plasma. Substitution with normal plasma in various ratios showed plasma kallikrein activity proportionally to the normal plasma contents. Extrapolation with the values at 120 min after activation gave the prekallikrein content of Fujiwara plasma as 30% of the normal value.
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