Competitive inhibitor of hydroxymethylglutaryl-coenzyme A (HMG-CoA) reductase
REVIEW Atorvastatin selectively and competitively inhibits the hepatic enzyme HMG-CoA reductase. As HMG-CoA reductase is responsible for converting HMG-CoA to mevalonate in the cholesterol biosynthesis pathway, this results in a subsequent decrease in hepatic cholesterol levels. Decreased hepatic cholesterol levels stimulates upregulation of hepatic LDL-C receptors which increases hepatic uptake of LDL-C and reduces serum LDL-C concentrations.
REFERENCES
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Rouleau J: Improved outcome after acute coronary syndromes with an intensive versus standard lipid-lowering regimen: results from the Pravastatin or Atorvastatin Evaluation and Infection Therapy-Thrombolysis in Myocardial Infarction 22 (PROVE IT-TIMI 22) trial. Am J Med. 2005 Dec;118 Suppl 12A:28-35.
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Maggon K: Best-selling human medicines 2002-2004. Drug Discov Today. 2005 Jun 1;10(11):739-42.
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