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Related Concept Videos

Lipid-Lowering Drugs: Statins and Miscellaneous Agents01:20

Lipid-Lowering Drugs: Statins and Miscellaneous Agents

Hyperlipidemia, a medical condition often referred to as high cholesterol, is characterized by abnormally elevated levels of lipids in the bloodstream. When present in excess, these lipids, specifically cholesterol and triglycerides, can lead to serious health complications, often involving cardiovascular diseases. Illnesses like atherosclerosis, heart attacks, and pancreatitis have all been linked to untreated hyperlipidemia. This means controlling and regulating cholesterol and triglyceride...
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Lipids are an essential component of a balanced human diet. Triglycerides, which make up the majority of dietary lipids, are found in both saturated fats—commonly present in meat, dairy products, and certain tropical plants like coconut, and hydrogenated oils such as margarine and baking shortenings (trans fats)—and unsaturated fats, which are abundant in seeds, nuts, olive oil, and most vegetable oils. The main sources of cholesterol include egg yolks, various meats and organ meats, shellfish,...
Cholesterol: Significance and Regulation01:29

Cholesterol: Significance and Regulation

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Atherosclerosis III: Management

Management of atherosclerosis involves an integrated strategy encompassing pharmacological treatment, surgical interventions, lifestyle changes, and nutrition therapy to address the multifactorial nature of the disease.Pharmacological TherapyA cornerstone of atherosclerosis management is the use of pharmacological agents. Statins, such as atorvastatin, are pivotal in inhibiting HMG-CoA reductase, an enzyme that catalyzes an initial step in cholesterol synthesis in the liver. This reduction in...
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Related Experiment Video

Updated: Jun 23, 2026

Cell-free Biochemical Fluorometric Enzymatic Assay for High-throughput Measurement of Lipid Peroxidation in High Density Lipoprotein
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Early decrease of oxidative stress by atorvastatin in hypercholesterolaemic patients: effect on circulating vitamin

Roberto Cangemi1, Lorenzo Loffredo, Roberto Carnevale

  • 1IV Divisione di Clinica Medica, Department of Experimental Medicine and Pathology, University of Rome La Sapienza, Viale del Policlinico 155, Rome 00161, Italy.

European Heart Journal
|December 11, 2007
PubMed
Summary

Atorvastatin, a statin, demonstrates early antioxidant effects by reducing oxidative stress and increasing vitamin E levels in hypercholesterolemic patients. This antioxidant action appears independent of its cholesterol-lowering effects.

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Area of Science:

  • Biochemistry
  • Cardiovascular Medicine
  • Nutritional Science

Background:

  • Statins are known to inhibit oxidative stress, but their independent effects from cholesterol reduction and interactions with antioxidant vitamins remain unclear.
  • Oxidative stress, indicated by elevated urinary isoprostanes, and vitamin E levels were assessed in hypercholesterolemic patients.

Purpose of the Study:

  • To determine if statins inhibit oxidative stress independently of cholesterol lowering.
  • To evaluate the behavior of vitamin E alongside changes in oxidative stress.
  • To investigate atorvastatin's in vitro effects on LDL oxidation and vitamin E consumption.

Main Methods:

  • Hypercholesterolemic patients (HC) and healthy subjects (HS) were studied. HC patients were randomized to diet or diet plus atorvastatin (10 mg/day).
  • Urinary isoprostanes and plasma vitamin E levels were measured. In vitro experiments assessed atorvastatin's effect on platelet-mediated LDL oxidation.

Main Results:

  • Hypercholesterolemic patients exhibited higher isoprostanes and lower vitamin E than healthy subjects.
  • Atorvastatin treatment led to a rapid reduction in isoprostanes within 3 days, with further decrease at 30 days.
  • Atorvastatin also increased vitamin E levels and reduced cholesterol, while diet alone had minimal effect on cholesterol.

Conclusions:

  • Atorvastatin exerts a significant early antioxidant effect, independent of cholesterol reduction.
  • This antioxidant action may contribute to the observed increase in circulating vitamin E.
  • Atorvastatin directly inhibits LDL oxidation in vitro via a mechanism involving NADPH-oxidase.