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Overview of Lipid Metabolism01:24

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Lipid metabolism is a crucial process in the human body that involves the synthesis and degradation of lipids. This process is essential for energy production, cell membrane formation, and hormone production, among other functions.
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Although not a source of energy, cholesterol plays a significant role as a foundational structure for bile salts, steroid hormones, and vitamin D, as well as being a crucial component of plasma membranes. Approximately 15% of blood cholesterol is derived from our diet, with the remainder synthesized from acetyl CoA by the liver and intestines. Cholesterol is eliminated from the body through its conversion into bile salts, which are eventually discarded in the feces.
Considering cholesterol and...
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Blood Studies for Cardiovascular System III: Serum Lipid Profile01:25

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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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Postprandial hyperlipidemia as a potential residual risk factor.

Kazufumi Nakamura1, Toru Miyoshi1, Kei Yunoki2

  • 1Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan.

Journal of Cardiology
|January 9, 2016
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Summary

Postprandial hyperlipidemia, marked by high triglycerides after meals, is a key residual risk factor for coronary heart disease (CHD). Treatments like ezetimibe or omega-3 fatty acids show promise in managing this condition, especially in diabetic patients.

Keywords:
Coronary heart diseasePostprandial hyperlipidemiaResidual risk factorTriglyceride

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Area of Science:

  • Cardiovascular Medicine
  • Metabolic Disorders
  • Atherosclerosis Research

Background:

  • Statin therapy reduces low-density lipoprotein cholesterol (LDL-C) and coronary heart disease (CHD) risk, but residual risk factors persist.
  • High triglyceride (TG) levels, particularly postprandial hyperlipidemia, are significant residual risk factors for CHD.
  • Postprandial hyperlipidemia involves elevated TG-rich chylomicron remnants, protracted hypertriglyceridemia, and contributes to atherogenesis.

Purpose of the Study:

  • To highlight postprandial hyperlipidemia as a critical residual risk factor for CHD.
  • To explore the link between postprandial hyperlipidemia, insulin resistance, and endothelial dysfunction.
  • To review current and potential therapeutic strategies for managing postprandial hyperlipidemia.

Main Methods:

  • Review of prospective studies on nonfasting TG levels and CHD incidence.
  • Analysis of TG and remnant lipoprotein levels in diabetes patients with and without insulin resistance.
  • Examination of the role of postprandial hyperlipidemia in endothelial dysfunction and atherogenesis.

Main Results:

  • Nonfasting TG levels and postprandial remnant lipoprotein levels are elevated in insulin-resistant diabetes patients.
  • Postprandial hyperlipidemia promotes endothelial dysfunction through inflammation and oxidative stress.
  • Ezetimibe and omega-3 fatty acids effectively reduce postprandial TG elevation and improve endothelial function.

Conclusions:

  • Postprandial hyperlipidemia is a crucial residual risk factor, especially in metabolic syndrome and diabetes mellitus.
  • Combined therapy with statins, ezetimibe, or omega-3 fatty acids may improve outcomes in CHD patients.
  • Further research is necessary to establish definitive treatments for postprandial hyperlipidemia.