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Updated: May 19, 2026
10:12
Enrichment of Mammalian Tissues and Xenopus Oocytes with Cholesterol
Published on: March 25, 2020
Dietary cholesterol increases paraoxonase 1 enzyme activity
Daniel S Kim1, Amber A Burt, Jane E Ranchalis
1Department of Medicine and University of Washington School of Medicine, Seattle, WA, USA.
Journal of Lipid Research
|August 17, 2012
Summary
Dietary intake of cholesterol, alcohol, vitamin C, iron, and folic acid significantly impacts paraoxonase 1 (PON1) activity. This finding is crucial for understanding HDL
Area of Science:
- Biochemistry
- Nutritional Science
- Cardiovascular Disease Research
Background:
- Paraoxonase 1 (PON1) activity, linked to HDL, is associated with cardiovascular diseases.
- Previous studies suggested a positive link between vitamin C and E intake and PON1 activity in a specific cohort.
Purpose of the Study:
- To replicate previous findings on vitamin C and PON1 activity.
- To investigate the impact of other dietary nutrient intakes on PON1 activity.
Main Methods:
- 1,402 subjects completed a food frequency survey to assess nutrient and mineral intake.
- Stepwise regression analysis was employed to determine dietary and covariate effects on PON1 arylesterase activity.
Main Results:
- Five dietary components independently predicted PON1 activity: cholesterol, alcohol, vitamin C, iron, and folic acid.
- Dietary cholesterol showed a positive association, explaining 5.5% of PON1 activity variance.
- Confirmed prior associations with vitamin C and identified novel predictors: cholesterol, iron, and folic acid.
Conclusions:
- Dietary cholesterol, iron, and folic acid intake are novel predictors of human PON1 activity.
- Understanding environmental factors influencing PON1 activity is key to its role in cardiovascular health and disease.
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