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[Development of a serum lipoprotein A-I immunoassay method]
K Shishino1, Y Hitsumoto, H Osawa
1Department of Laboratory and Clinical Medicine, Ehime University Medical School.
Rinsho Byori. the Japanese Journal of Clinical Pathology
|August 6, 1999
Summary
A new immunoturbidimetric assay accurately measures lipoprotein A-I (LpA-I) levels. This method is sensitive and correlates well with existing techniques, aiding lipid disorder analysis.
Area of Science:
- Clinical Chemistry
- Immunology
- Cardiovascular Research
Context:
- Lipoprotein A-I (LpA-I) plays a role in lipid metabolism and cardiovascular health.
- Accurate quantification of LpA-I is crucial for understanding lipid disorders.
- Existing methods for LpA-I measurement can be complex or lack sensitivity.
Purpose:
- To develop and validate a sensitive immunoturbidimetric assay for quantifying lipoprotein A-I (LpA-I).
- To assess the assay's precision, correlation with conventional methods, and establish reference intervals.
- To evaluate the clinical utility of the assay in patients with coronary artery disease.
Summary:
- A novel sequential antibody-based immunoturbidimetric assay was developed for LpA-I.
- The assay demonstrates high sensitivity (detecting down to 155 mg/l) and precision.
- Excellent correlation (r = 0.947) was observed with differential electroimmunoassay.
- Reference intervals in healthy adults were established (284–736 mg/l).
- Significantly lower LpA-I values were found in coronary artery disease patients compared to controls (p < 0.001).
Impact:
- Provides a sensitive and reliable method for LpA-I quantification.
- Facilitates the study of LpA-I in various lipid disorders and cardiovascular conditions.
- Enables better understanding of LpA-I's role in the pathophysiology of coronary artery disease.