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Human CD36 deficiency is associated with elevation in low-density lipoprotein-cholesterol.
1Department of Laboratory Medicine, Hokkaido University School of Medicine, Sapporo, Japan.
American Journal of Medical Genetics
|August 18, 2000
Summary
CD36 deficiency elevates LDL cholesterol levels in humans. This study in Japanese volunteers suggests a role for CD36 in lipoprotein metabolism and cholesterol regulation.
Area of Science:
- Biochemistry
- Human Genetics
- Metabolic Disorders
Background:
- CD36 is a scavenger receptor expressed on various cells, including platelets and monocytes.
- Its precise role in human lipoprotein metabolism remains incompletely understood.
- Genetic variations in CD36 can lead to deficiency states.
Purpose of the Study:
- To investigate the association between CD36 deficiency and lipoprotein profiles in humans.
- To determine if CD36 plays a role in regulating cholesterol and triglyceride levels.
- To elucidate the contribution of CD36 to lipoprotein metabolism.
Main Methods:
- Classification of 790 healthy Japanese volunteers into normal, CD36 type-I, and CD36 type-II deficiency groups using flow cytometry.
- Analysis of lipoprotein profiles, including total cholesterol, LDL cholesterol, and triglycerides.
- Genetic analysis to identify mutations in the CD36 gene.
Main Results:
- CD36 deficiency was identified in 6.2% of the study population (45 type II, 4 type I).
- Subjects with type-II CD36 deficiency showed significantly elevated serum total cholesterol and LDL cholesterol compared to normal controls (P = 0.0095 and 0.0382).
- A similar trend of elevated cholesterol was observed in type-I deficiency, though not statistically significant due to sample size.
Conclusions:
- CD36 deficiency is associated with elevated LDL cholesterol levels.
- These findings indicate that CD36 contributes to the regulation of low-density lipoprotein metabolism.
- CD36 plays a significant role in maintaining normal lipoprotein profiles in humans.