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Updated: May 12, 2026

Experimental and Imaging Techniques for Examining Fibrin Clot Structures in Normal and Diseased States
Published on: April 1, 2015
Weight reduction is associated with increased plasma fibrin clot lysis
Beata Brzezińska-Kolarz1, Marek Kolarz2, Angelika Wałach3
1Józef Dietl Małopolska Higher School, Kraków, Poland beatabkol@mp.pl.
Abstract:
Obesity is associated with an increased risk of vascular thrombotic events. We sought to investigate how obesity and weight loss affect plasma fibrin clot properties. A total of 29 obese patients were studied before and after 3-month low-fat diet. Plasma fibrin clot parameters, including fibrin clot permeation coefficient (Ks), the lag phase of the turbidity curve, clot lysis time (t 50%), maximum rate of increase in D-dimer levels, and maximum D-dimer concentrations, were determined. Low-fat diet resulted in the reduction of body weight (P < .0001), body mass index (P < .0001), fat mass (P < .0001), total cholesterol (P < .0001), low-density lipoprotein cholesterol (P = .0005), triglycerides (P = .008), and plasminogen activator inhibitor 1 (P = .02), but not in fibrinogen or C-reactive protein. The only change in fibrin clot variables was shorter t 50% (P = .02). Baseline t 50%, but not posttreatment, correlated with waist circumference (r = .44, p = .02). This study demonstrates that weight loss in obese people can increase the efficiency of fibrin clot lysis.
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