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Research Article| Volume 17, ISSUE 1, P17-22, July 1993

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Passage of the menopause is followed by haemostatic changes

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      Abstract

      The passage of the menopause has been reported to be followed by a steadily increasing risk of cardio-vascular disease (CVD). Changes in the concentrations of certain coagulation factors and fibrinolytic components are considered risk factors for CVD. We evaluated the differences in some of these variables between a premenopausal group (A) n = 28) and two postmenopausal groups, one of women less than 18 months past the menopause (B) n = 28), the other of women more than 18 months past the menopause (C) n = 21). The variables measured were serum oestradiol content, plasma antithrombin III (AT III) activity, protein C activity and the plasma concentrations of tissue type plasminogen activator (t-PA) antigen, plasminogen activator inhibitor (PAI-I) antigen, and fibrinogen. As compared with the premenopausal women (group A), group C showed significantly higher values for AT III and protein C activity and for t-PA and PAI-I antigen; and group B and C both showed significantly higher fibrinogen concentrations. This probably means that haemostatic balance was maintained in the postmenopausal women, although the increased concentrations of fibrinogen and PAI-1 might constitute risk factors for the development of cardiovascular disease.

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