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The Wiskott‐Aldrich syndrome: studies on a possible defect in mitochondrial ATP resynthesis in platelets
Author(s) -
Akkerman J. W. N.,
Brederode W.,
Gorier G.,
Zegers B. J. M.,
Kuis W.
Publication year - 1982
Publication title -
british journal of haematology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.907
H-Index - 186
eISSN - 1365-2141
pISSN - 0007-1048
DOI - 10.1111/j.1365-2141.1982.tb02819.x
Subject(s) - wiskott–aldrich syndrome , platelet , mitochondrion , adenosine triphosphate , glycolysis , adenosine diphosphate , atp–adp translocase , stimulation , atp synthase , microbiology and biotechnology , biology , biochemistry , chemistry , metabolism , endocrinology , immunology , enzyme , inner mitochondrial membrane , platelet aggregation , gene
S ummary . A possible defect in mitochondrial ATP resynthesis in platelets has been used for detection of Wiskott‐Aldrich syndrome carriers (Shapiro et al , 1978). The detection was based on an abnormal adrenaline‐induced platelet aggregation under conditions that only the mitochondria provide metabolic energy. We evaluated the test and found false negative and false positive results which raised doubts about the applicability of the test and the nature of the underlying defect. Direct analysis of mitochondrial ATP regeneration in patients and carriers showed an impaired mitochondrial energy production which was insufficient to maintain ATP homeostasis when glycolytic energy production was inhibited. Also abnormal was the fall in metabolic ATP concentration during stimulation with adrenaline and especially with thrombin when the platelets were incubated in glucose‐free medium. These data provide direct evidence for a regulation defect in mitochondrial ATP resynthesis in platelets of patients and carriers with Wiskott‐Aldrich syndrome.