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Published on: November 10, 2017

Simvastatin increases clot permeability and susceptibility to lysis in patients with LDL cholesterol below 3.4 mmol/l

Anetta Undas1, Roman Topór-Madry, Wiesława Tracz

  • 1Institute of Cardiology, Jagiellonian University School of Medicine, Kraków, Poland. mmundas@cyf-kr.edu.pl

Polskie Archiwum Medycyny Wewnetrznej
|August 22, 2009
PubMed

Insights

Simvastatin improves blood clot properties, enhancing clot permeability and lysis in individuals with lower LDL cholesterol. These effects are linked to its anti-inflammatory actions, potentially contributing to cardiovascular benefits.

Area of Science:

  • Cardiovascular Medicine
  • Pharmacology
  • Hematology

Background:

  • Statins, including simvastatin, offer cardiovascular benefits beyond lipid-lowering, such as reducing prothrombotic mechanisms.
  • Simvastatin has been shown to reduce thrombin generation and improve fibrin clot properties in high-risk patients with elevated LDL cholesterol.

Purpose of the Study:

  • To investigate the effects of simvastatin on fibrin clot features in individuals with low-density lipoprotein (LDL) cholesterol levels below 3.4 mmol/l.
  • To assess simvastatin's impact on fibrin clot permeability and clot lysis efficiency in this specific patient group.

Main Methods:

  • A study involving 30 subjects (24 males, 6 females) under 70 years old with LDL cholesterol <3.4 mmol/l and no prior cardiovascular events.
  • Exclusion criteria included diabetes mellitus, chronic inflammatory diseases, and renal insufficiency.
  • Measurements of ex vivo plasma fibrin clot permeability and clot lysis efficiency were taken before and after a 3-month treatment with simvastatin (40 mg/day).

Main Results:

  • Simvastatin significantly reduced total cholesterol, LDL cholesterol, triglycerides, and C-reactive protein (CRP), with no change in fibrinogen.
  • A significant increase in clot permeability (4.4%) and a significant shortening of clot lysis time (11.2%) were observed post-treatment.
  • These alterations in fibrin clot properties correlated with reductions in CRP and, for clot lysis, also with triglyceride levels.

Conclusions:

  • Simvastatin demonstrates unique effects on fibrin clot lysis and permeability in individuals with LDL cholesterol <3.4 mmol/l.
  • These fibrin modifications are associated with simvastatin's anti-inflammatory effects, indicated by reduced CRP levels.
  • The observed alterations in fibrin clot function may contribute to the overall clinical benefits of statin therapy.
Abstract

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