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Sex-related differences in the associations between hyperleptinemia, insulin resistance and dysfibrinolysis
Umea Univ Hosp, Dept Clin Med & Publ Hlth, Umea, Sweden.
Orebro Univ Hosp, Dept Med, Orebro, Sweden.
Umea Univ Hosp, Dept Clin Med & Publ Hlth, Umea, Sweden.
Karolinska Univ Hosp Huddinge, Dept Clin Sci, Unit Obstet & Gynecol, Stockholm, Sweden.
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2008 (English)In: Blood Coagulation and Fibrinolysis, ISSN 0957-5235, E-ISSN 1473-5733, Vol. 19, no 7, p. 625-32Article in journal (Refereed) Published
Abstract [en]

The adipocyte-derived hormone leptin is associated with insulin resistance and reduced fibrinolytic status--or dysfibrinolysis--in humans. As leptin associates differentially to the development of cardiovascular disease and diabetes in men and women, we hypothesized that leptin and insulin sensitivity are related to dysfibrinolysis in a sex-dependent manner. Thirty-two men and 40 women were recruited from the Monitoring of trends and determinants in Cardiovascular disease (MONICA) population sample, representing the highest and lowest quartiles of fasting insulin levels. Lipids, fibrinolytic status [plasminogen activator inhibitor 1 (PAI-1) activity, tissue plasminogen activator (tPA) mass and activity, and tPA-PAI complex], leptin, testosterone and sex-hormone-binding globulin were measured. Insulin sensitivity was estimated using the euglycaemic clamp technique. Body composition was determined by bioimpedance. Determinants for circulating levels of fibrinolytic factors were explored in a multivariate linear regression analysis. Levels of fibrinolytic variables and estimated insulin sensitivity did not differ between men and women. Leptin was independently associated with reduced fibrinolytic status (high PAI-1 activity, low tPA activity, high tPA mass, and high tPA-PAI complex) in men (P < 0.001-0.002). In women, fat mass and/or insulin sensitivity were related to these factors (P < 0.001-0.03), and leptin only to reduced tPA activity (P = 0.002). Hyperleptinemia, dysfibrinolysis, insulin sensitivity and androgenicity associate differentially in men and women.

Place, publisher, year, edition, pages
Lippincott Williams & Wilkins, 2008. Vol. 19, no 7, p. 625-32
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Endocrinology and Diabetes
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URN: urn:nbn:se:oru:diva-72258DOI: 10.1097/MBC.0b013e3283099046ISI: 000260159300003PubMedID: 18832901OAI: oai:DiVA.org:oru-72258DiVA, id: diva2:1286671
Available from: 2019-02-07 Created: 2019-02-07 Last updated: 2019-02-07Bibliographically approved

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Rask, Eva

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