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Related Concept Videos

Blood Studies for Cardiovascular System III: Serum Lipid Profile01:25

Blood Studies for Cardiovascular System III: Serum Lipid Profile

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Understanding serum lipids is crucial for maintaining cardiovascular health and preventing heart disease and stroke.
Serum lipids are fats and fatty substances in the blood and are crucial for various bodily functions, including energy storage, cellular structure, and hormone production. Serum lipids consist of cholesterol, triglycerides, and phospholipids.
Cholesterol is a soft, fat-like substance found in all body cells. It is crucial for producing hormones, vitamin D, and substances that aid...
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Lipids: Dietary Sources and Requirements01:18

Lipids: Dietary Sources and Requirements

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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...
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Lipid-Lowering Drugs: Statins and Miscellaneous Agents01:20

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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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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.
Lipolysis: The Breakdown of Lipids:
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Asymmetric Lipid Bilayer01:35

Asymmetric Lipid Bilayer

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Biological membranes show uneven distribution of different types of lipids in the inner and outer layers, resulting in transverse asymmetric membranes. The treatment of the erythrocyte membrane with the enzyme phospholipase confirmed the asymmetric nature of the lipid bilayer. The enzyme hydrolyzes lipids into fatty acids and hydrophilic groups. The phospholipase acts only on the outer layer of the membrane, while the inner layer remains intact. The phospholipase treatment resulted in 80%...
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Cholesterol: Significance and Regulation01:29

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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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A Stably Established Two-Point Injection of Lysophosphatidylcholine-Induced Focal Demyelination Model in Mice
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Dyslipidemias in multiple sclerosis.

Taylor R Wicks1, Nasim Nehzat1, Anna Wolska2

  • 1Departments of Pharmaceutical Sciences, University at Buffalo, The State University of New York, Buffalo, NY, USA.

Multiple Sclerosis and Related Disorders
|September 11, 2024
PubMed
Summary
This summary is machine-generated.

Dyslipidemia frequencies did not differ between multiple sclerosis (MS) patients and healthy controls. However, higher high-density lipoprotein particle (HDLP) concentrations were linked to reduced disability in progressive MS (PMS).

Keywords:
CholesterolDyslipidemiaLDLLipoproteins

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Area of Science:

  • Biochemistry
  • Neuroimmunology
  • Cardiovascular Science

Background:

  • Multiple sclerosis (MS) is a chronic inflammatory disease of the central nervous system.
  • Dyslipidemia, characterized by abnormal lipid levels, is a common comorbidity with potential implications in MS pathogenesis and progression.
  • Understanding lipid profiles and lipoprotein particle characteristics in MS is crucial for assessing disease associations and potential therapeutic targets.

Purpose of the Study:

  • To determine the prevalence of various dyslipidemia phenotypes in individuals with relapsing-remitting MS (RRMS) and progressive MS (PMS) compared to healthy controls (HC).
  • To investigate the relationship between dyslipidemia phenotypes and lipoprotein particle size distributions in MS.
  • To explore associations between lipoprotein profiles, disability scores (EDSS), and PCSK9 levels in MS.

Main Methods:

  • A cross-sectional study involving 203 HC, 221 RRMS, and 126 PMS participants.
  • Lipid profiles (total cholesterol, HDL-C, triglycerides, apoB) were measured, and LDL-C subtypes were calculated.
  • Lipoprotein particle sizes and concentrations (TRLP, LDLP, HDLP) were analyzed using proton NMR profiling; PCSK9 levels were assessed via immunoassay.

Main Results:

  • Frequencies of normolipidemia and dyslipidemia phenotypes were similar across HC, RRMS, and PMS groups.
  • Concentrations of triglyceride-rich lipoprotein particles (TRLP) and small low-density lipoprotein particles (LDLP) showed a decreasing trend from HC to RRMS to PMS.
  • Higher concentrations of high-density lipoprotein particles (HDLP) and small HDLP were associated with lower Expanded Disability Status Scale (EDSS) scores in PMS patients.

Conclusions:

  • The prevalence of dyslipidemia phenotypes is comparable between individuals with MS and healthy controls.
  • Increased concentrations of high-density lipoprotein particles are associated with less severe disability in progressive MS.
  • PCSK9 levels correlate with HDL particle concentrations, particularly small HDL particles.