No evidence of association between prothrombotic gene polymorphisms and the development of acute myocardial infarction at a young age

Background : we investigated the association between 9 polymorphisms of genes encoding hemostasis factors and myocardial infarction in a large sample of young patients chosen because they have less coronary atherosclerosis than older patients, and thus their disease is more likely to be related to a genetic predisposition to a prothrombotic state Methods and Results : this nationwide case-control study involved 1210 patients who had survived a first myocardial infarction at an age of 45 years who underwent coronary arteriography in 125 coronary care units and 1210 healthy subjects matched for age, sex, and geographical origin. None of the 9 polymorphisms of genes encoding proteins involved in coagulation (G-455A -fibrinogen: OR, 1.0; CI, 0.8 to 1.2; G1691A factor V: OR, 1.1; CI, 0.6 to 2.1; G20210A factor II: OR, 1.0; CI, 0.5 to 1.9; and G10976A factor VII: OR, 1.0; CI, 0.8 to 1.3), platelet function (C807T glycoprotein Ia: OR, 1.1; CI, 0.9 to 1.3; and C1565T glycoprotein IIIa: OR, 0.9; CI, 0.8 to 1.2), fibrinolysis (G185T factor XIII: OR, 1.2; CI, 0.9 to 1.6; and 4G/5G plasminogen activator inhibitor type 1: OR, 0.9; CI, 0.7 to 1.2), or homocysteine metabolism (C677T methylenetetrahydrofolate reductase: OR, 0.9; CI, 0.8 to 1.1) were associated with an increased or decreased risk of myocardial infarction Conclusions : this study provides no evidence supporting an association between 9 polymorphisms of genes encoding proteins involved in hemostasis and the occurrence of premature myocardial infarction or protection against it

PRAVASTATIN VS GEMFIBROZIL IN THE TREATMENT OF PRIMARY HYPERCHOLESTEROLEMIA RID A-6707-2012

An increase in total and low density lipoprotein (LDL) cholesterol concentrations is related to the incidence of cardiovascular heart disease. The purpose of this study was to compare the efficacy and safety of pravastatin, an HMG-CoA reductase inhibitor, versus gemfibrozil, a fibrate, in the treatment of primary hypercholesterolaemia. 855 subjects (males and females, aged between 18 and 70 years) with total cholesterol (TC) concentrations > 240 mg/dl and triglyceride (TG) concentrations < 250 mg/dl were enrolled. After a pretreatment diet period, patients received either pravastatin 20 mg/day (659 patients) or gemfibrozil 1200 mg/day (196 patients). At the end of the 12-week treatment period, reductions in TC (-23%) and LDL-C (-31%) were noted in the pravastatin group. Gemfibrozil reduced TC by 16% and LDL by 20%. High density lipoprotein (HDL) cholesterol concentrations increased in a similar way in the two groups: pravastatin +10%, gemfibrozil +11%. Triglycerides decreased by 14% with pravastatin and by 22% with gemfibrozil. Pravastatin and gemfibrozil were both well tolerated. No significant adverse events or variations in laboratory parameters occurred during this study