Thromb Haemost 1998; 80(02): 233-238
DOI: 10.1055/s-0037-1615179
Rapid Communication
Schattauer GmbH

Very Low Activated Factor VII and Reduced Factor VII Antigen in Familial Abetalipoproteinaemia

Autoren

  • G. J. Miller

    1   Medical Research Council Epidemiology and Medical Care Unit, London, England
  • K. A. Mitropoulos

    1   Medical Research Council Epidemiology and Medical Care Unit, London, England
  • M. N. Nanjee

    2   Department of Cardiovascular Biochemistry, St Bartholomew’s and the Royal London School of Medicine and Dentistry, London, England
  • D. J. Howarth

    1   Medical Research Council Epidemiology and Medical Care Unit, London, England
  • J. C. Martin

    1   Medical Research Council Epidemiology and Medical Care Unit, London, England
  • M. P. Esnouf

    3   Nuffield Department of Clinical Biochemistry, Radcliffe Infirmary, Oxford, England
  • B. E. A. Reeves

    1   Medical Research Council Epidemiology and Medical Care Unit, London, England
  • N. E. Miller

    2   Department of Cardiovascular Biochemistry, St Bartholomew’s and the Royal London School of Medicine and Dentistry, London, England
  • J. A. Cooper

    1   Medical Research Council Epidemiology and Medical Care Unit, London, England
Weitere Informationen

Publikationsverlauf

Received 13. Oktober 1997

Accepted after resubmission 22. April 1998

Publikationsdatum:
08. Dezember 2017 (online)

Summary

Abetalipoproteinaemia is a rare disorder of apolipoprotein B metabolism associated with extremely low plasma concentrations of triglyce-ride. To discover whether the general positive association between factor VII and triglyceride levels extends to this condition, 5 patients were compared with 18 controls. All patients had a triglyceride below 100 μmol/l. Plasma unesterified fatty acid concentration was normal. Although factor IX activity was only slightly reduced (mean 88% standard) and factor IX antigen was normal, mean activated factor VII in patients was strikingly reduced to 34% of that in controls, a level similar to that found in haemophilia B. The patients’ mean factor VII activity and factor VII antigen were also significantly reduced to 54% and 63% of those in controls, respectively. Mean factor XI activity and tissue factor pathway inhibitor activity were reduced in patients to 70% and 75% of control values respectively, while factor XII, factor XI antigen, factor X, prothrombin and protein C were normal.