2002, Number 1
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Arch Cardiol Mex 2002; 72 (1)
Statins postinfarction. A convincing benefit. A therapeutic strategy to improve
Galve E
Language: Spanish
References: 39
Page: 58-67
PDF size: 121.75 Kb.
ABSTRACT
Atherosclerotic disease is etiopathogenically related to the presence of hypercholesterolemia. Physicians have never had until now a generation of lipid-lowering drugs with a comparable degree of efficacy, potency and safety as statins. The most explored field with statins has been the post myocardial infarction period, since this type of patients is at high risk of new cardiovascular events and, as a consequence, can obtain a marked benefit from intervention. Accordingly, three large-scale clinical trials with statins have conclusively demonstrated a significant reduction in cardiovascular events and in mortality after myocardial infarction.
Nevertheless, although there is convincing evidence that statins should be implemented after myocardial infarction, there are still a number of relevant questions open and under study. The first of them is the value of the so-called pleiotropic properties of statins (additional properties independent from cholesterol lowering), so important for plaque stabilization. In addition, there is uncertainty about how early treatment with statins has to be started after the acute phase. Another point we do not know is the goal of lipid intervention (the level of total or LDL-cholesterol to be achieved). In fact, there is still a debate on whether patients with average levels of cholesterol or even with low levels are to treated. Finally, but related to the previous question, it would be very interesting to determine whether high doses of statins, are necessary or can low doses be equally efficacious.
In conclusion, statins are a landmark in cholesterol-lowering interventions after myocardial infarction. Probably, the majority of survivors should be treated. At present, active research is focused on delineatingmore precisely the manney in which these drugs are to be used to prolong life in these patients.
REFERENCES
Stamler J, Wentworth D, Neaton JD: Is relationship between serum cholesterol and risk of premature death from coronary heart disease continuous and graded? Findings in 356,222 primary screenees of the Multiple Risk Factor Intervention Trial (MRFIT). JAMA 1986; 256: 2823-2828.
Committee of Principal Investigators: A co-operative trial in the primary prevention of ischaemic heart disease using clofibrate. Br Heart J 1978; 40: 1069-1118.
Lipid Research Clinics Program: The Lipid Research Clinics Coronary Primary Prevention Trial results. I. Reduction in incidence of coronary heart disease. JAMA 1984; 251: 351-364.
Lipid Research Clinics Program: The Lipid Research Clinics Coronary Primary Prevention Trial results. II. The relationship of reduction in incidence of coronary heart disease to cholesterol lowering. JAMA 1984; 251: 365-374.
Frick MH, Elo O, Haapa K, Heinonen OP, Heinsalmi P, Helo P, et al: Helsinki Heart Study: primary-prevention trial with gemfibrozil in middle-aged men with dyslipidemia. Safety of treatment, changes in risk factors, and incidence of coronary heart disease. N Engl J Med 1987; 317: 1237-1245.
Shepherd J, Cobbe SM, Ford I, Isles CG, Lorimer AR, Macfarlane PW, et al: For The West of Scotland Coronary Prevention Study Group. Prevention of coronary heart disease with pravastatin in men with hypercholesterolemia. West of Scotland Coronary Prevention Study Group. N Engl J Med 1995; 333; 1301-1307.
West of Scotland Coronary Prevention Study Group: Influence of pravastatin and plasma lipids on clinical events in the West of Scotland Coronary Prevention Study (WOSCOPS). Circulation 1998; 97: 1440-1445.
Downs JR, Clearfield M, Weis S, Whitney E, Shapiro DR, Beere PA, et al: Primary prevention of acute coronary events with lovastatin in men and women with average cholesterol levels: results of AFCAPS/TexCAPS. Air Force/Texas Coronary Atherosclerosis Prevention Study. JAMA 1998; 279: 1615-1622.
Scandinavian Simvastatin Survival Group: Randomized trial of cholesterol lowering in 4444 patients with coronary heart disease: the Scandinavian Simvastatin Survival Study (4S). Lancet 1994; 344: 1383-1389.
Jackevicius CA, Anderson GM, Leiter L, Tu JV: Use of statins in patients after acute myocardial infarction: Does evidence change practice?. Arch Intern Med 2001; 161: 183-188.
Sacks FM, Pfeffer MA, Moye LA, Rouleau JL, Rutherford JD, Cole TG, et al: The effect of pravastatin on coronary events after myocardial infarction in patients with average cholesterol levels. N Engl J Med 1996; 335: 1001-1009.
The Long Term Intervention with Pravastatin in Ischaemic Disease (LIPID) Study Group: Prevention of cardiovascular events and death with pravastatin in patients with coronary heart disease and a broad range of initial cholesterol levels. N Engl J Med 1998; 339: 1349-1357.
Schwartz GG, Oliver MF, Ezekowitz MD, Ganz P, Waters D, Kane JP, et al: Rationale and design of the Myocardial Ischemia Reduction with Aggressive Cholesterol Lowering (MIRACL) study that evaluates atorvastatin in unstable angina pectoris and in non-Q-wave acute myocardial infarction. Am J Cardiol 1998; 81: 578-581.
Schwartz GG, Olsson AG, Ezekowitz MD, Ganz P, Oliver MF, Waters D, et al: Effects of atorvastatin on early recurrent ischemic events in acute coronary syndromes: the MIRACL study: a randomized controlled trial. JAMA 2001; 285: 1758-1760.
van Boven AJ: FLORIDA (Fluvastatin on Risk Diminishing after Acute Myocardial Infarction). Clin Cardiol 2001; 24: 87-88.
Stenestrand U, Wallentin L: Early statin treatment following acute myocardial infarction and 1-year survival. JAMA 2001; 285: 430-436.
Schiele R, Gitt AK, Heer T, Wienberger H, Ludwigshafen HC: Early statin use in acute myocardial infarction is associated with a reduced hospital mortality: results of MITRA-2. Circulation 2000; 102: II-435 (Abstract).
Aronow HD, Topol EJ, Roe MT, Houghtaling PL, Wolski KE, Lincoff AM, et al: Effect of lipid-lowering therapy on early mortality after acute coronary syndromes: an observational study. Lancet 2001; 357: 1063-1068.
Archbold RA, Timmis AD: Cholesterol lowering and coronary artery disease: mechanisms of risk reduction. Heart 1998; 80: 543-547.
Corsini A, Bernini F, Quarato P, Donetti E, Bellosta S, Fumagalli R, et al: Non-lipid-related effects of 3-hydroxy-3-methylglutaryl coenzyme A reductase inhibitors. Cardiology 1996; 87: 458-468.
Schmieder RE, Schobel HP: Is endothelial dysfunction reversible? Am J Cardiol 1995; 76: 117A-121A.
O’Driscoll G, Green D, Taylor RR: Simvastatin, an HMG-coenzyme A reductase inhibitor, improves endothelial function within 1 month. Circulation 1997; 95: 1126-1131.
Egashira K, Hirooka Y, Kai H, Sugimachi M, Suzuki S, Inou T, et al: Reduction in serum cholesterol with pravastatin improves endothelium-dependent coronary vasomotion in patients with hypercholesterolemia. Circulation 1994; 89: 2519-2524.
Laufs U, Endres M, Custodis F, Gertz K, Nickenig G, Liao JK, et al: Suppression of endothelial nitric oxide production after withdrawal of statin treatment is mediated by negative feedback regulation of rho GTPase gene transcription. Circulation 2000; 102: 3104-3110.
Laufs U, Gertz K, Huang P, Nickenig G, Bohm M, Dirnagl U, et al: Atorvastatin upregulates type III nitric oxide synthase in thrombocytes, decreases platelet activation, and protects from cerebral ischemia in normocholesterolemic mice. Stroke 2000; 31: 2442-2449.
Dupuis J, Tardif JC, Cernacek P, Théroux P: Cholesterol reduction rapidly improves endothelial function after acute coronary syndromes. The RECIFE trial. Circulation 1999; 99: 3227-33.
Treasure CB, Klein JL, Weintraub WS, Talley JD, Stillabower ME, Kosinski AS, et al: Beneficial effects of cholesterol-lowering therapy on the coronary endothelium in patients with coronary artery disease. N Engl J Med 1995; 332: 481-487.
Badimon JJ, Badimon L, Turitto VT, Fuster V: Platelet deposition at high shear rates is enhanced by high plasma cholesterol levels. In vivo study in the rabbit model. Arterioscler Thromb 1991; 11: 395-402.
Lacoste L, Lam JY, Hung J, Letchacovski G, Solymoss CB, Waters D: Hyperlipidemia and coronary disease. Correction of the increased thrombogenic potential with cholesterol reduction. Circulation 1995; 92: 3172-3177.
Hoffman R, Brook GJ, Aviram M: Hypolipidemic drugs reduce lipoprotein susceptibility to undergo lipid peroxidation: in vitro and ex vivo studies. Atherosclerosis 1992; 93: 105-113.
Chen L, Haught WH, Yang B, Saldeen TG, Parathasarathy S, Mehta JL: Preservation of endogenous antioxidant activity and inhibition of lipid peroxidation as common mechanisms of antiatherosclerotic effects of vitamin E, lovastatin and amlodipine. J Am Coll Cardiol 1997; 30: 569-575.
Williams JK, Sukhova GK, Herrington DM, Libby P: Pravastatin has cholesterol-lowering independent effects on the artery wall of atherosclerotic monkeys. J Am Coll Cardiol 1998; 31: 684-691.
Ridker PM, Rifai N, Pfeffer MA, Sacks F, Braunwald E: Long-term effects of pravastatin on plasma concentration of C-reactive protein. The Cholesterol and Recurrent Events (CARE) Investigators. Circulation 1999; 100: 230-235.
MacMahon M, Kirkpatrick C, Cummings CE, Clayton A, Robinson PJ, Tomiak RH, et al: A pilot study with simvastatin and folic acid/vitamin B12 in preparation for the study of the effectiveness of additional reductions in cholesterol and homocysteine (SEARCH). Nutr Metab Cardiovasc Dis 2000; 10: 195-203.
Pedersen TR: Statin trials and goals of cholesterol-lowering therapy after AMI. Am Heart J 1999; 138: S177-S182.
Russell MW, Huse DM, Miller JD, Kraemer DF, Hartz SC: Cost effectiveness of HMG-CoA reductase inhibition in Canada. Can J Clin Pharmacol 2001; 8: 9-16.
Gould AL, Rossouw ER, Santanello NC Heyse JF, Furberg CD: Cholesterol reduction yields clinical benefit: impact of statin trials. Circulation 1998; 97: 946-952.
Chen Z, Peto R, Collins R, MacMahon S, Lu J, Li W: Serum cholesterol concentration and coronary heart disease in population with low cholesterol concentrations. BMJ 1991; 303: 276-282.
Cozma LS, Ogunko A, Rees A: Secondary prevention of hypercholesterolemia: results of an audit conducted in South Wales. Heart 2000; 84: e3.