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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.
Abstract:
The role of lipids, lipoproteins and lipoprotein(a) [Lp(a)] in coronary artery disease (CAD) is known but the role of major apolipoproteins (apos) other than apo A-I and apo B remains unclear. In this study, using immunoturbidimetry we have estimated serum levels of total cholesterol, HDL-C, LDL-C, triglyceride, LDL-apoB and all major apos; A-I, A-II, B, C-II, C-III and E, in 751 healthy Indian subjects (470 men and 281 women, age 25-65 years), determined their percentiles, and established reference intervals. The effects of age, smoking and alcohol on all these analytes were also evaluated. This is the first study to provide reference intervals for all apos, in both sexes from a general population. The percentiles and the reference intervals have clinical relevance and will be useful in assessing the risk of CAD in patients with hyperlipidemia and other diseases.
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