Lipid, lipoprotein, apolipoprotein and lipoprotein(a) levels: reference intervals in a healthy Indian population

Tester F Ashavaid1, Altaf A Kondkar, Seema P Todur

  • 1Research Laboratories, P. D. Hinduja National Hospital and Medical Research Centre, Mahim, Mumbai 400-016, India. dr_tashavaid@hindujahospital.com

Insights

This study establishes crucial reference intervals for major apolipoproteins (apos) in healthy Indian adults, aiding in coronary artery disease (CAD) risk assessment for lipids and lipoproteins.

Area of Science:

  • Cardiovascular Medicine
  • Clinical Biochemistry
  • Lipidology

Background:

  • The role of lipids and lipoproteins in coronary artery disease (CAD) is established, yet the significance of major apolipoproteins (apos) beyond apo A-I and apo B requires further elucidation.
  • Understanding apolipoprotein profiles is essential for comprehensive cardiovascular risk stratification.

Purpose of the Study:

  • To establish reference intervals for major apolipoproteins (apos) in a healthy Indian population.
  • To investigate the influence of demographic factors like age, smoking, and alcohol consumption on these apolipoprotein levels.

Main Methods:

  • Serum levels of total cholesterol, HDL-C, LDL-C, triglycerides, LDL-apoB, and major apos (A-I, A-II, B, C-II, C-III, E) were quantified using immunoturbidimetry.
  • Percentiles and reference intervals were determined for 751 healthy Indian subjects (470 men, 281 women, aged 25-65 years).

Main Results:

  • This study presents the first comprehensive reference intervals for all major apolipoproteins in both sexes within a general Indian population.
  • Established reference intervals and percentile data for key lipid and apolipoprotein analytes.
  • Evaluated the impact of age, smoking, and alcohol on measured analytes.

Conclusions:

  • The established reference intervals for major apolipoproteins are clinically relevant for assessing coronary artery disease (CAD) risk.
  • These findings provide a valuable resource for clinicians managing patients with hyperlipidemia and related conditions.

Related Concept Videos

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

Blood Studies for Cardiovascular System III: Serum Lipid Profile

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...
Lipid-derived Compounds in the Human Body01:31

Lipid-derived Compounds in the Human Body

Fats and lipids are crucial components in the human body. Some lipid-derived compounds, such as fat-soluble vitamins, eicosanoids, lipoproteins, and glycolipids, also play unique roles to support various  biological processes .
Fat-soluble Vitamins
Fat-soluble vitamins, including vitamins A, D, E, and K, are required in minimal quantities, but their deficiencies can lead to severely abnormal physiological conditions. For example, vitamin A deficiency can cause night blindness, dry skin, delayed...
Cholesterol: Significance and Regulation01:29

Cholesterol: Significance and Regulation

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...
Lipids: Dietary Sources and Requirements01:18

Lipids: Dietary Sources and Requirements

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,...
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...
Lipid Digestion01:06

Lipid Digestion

Lipids are large molecules that are generally not water-soluble. Since most of the digestive enzymes in the human body are water-based, there are specific steps the body must take to break down lipids and make them available for use.