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Clinical Chemistry and Laboratory Medicine (CCLM)

Published in Association with the European Federation of Clinical Chemistry and Laboratory Medicine (EFLM)

Editor-in-Chief: Plebani, Mario

Ed. by Gillery, Philippe / Greaves, Ronda / Lackner, Karl J. / Lippi, Giuseppe / Melichar, Bohuslav / Payne, Deborah A. / Schlattmann, Peter

IMPACT FACTOR 2018: 3.638

CiteScore 2018: 2.44

SCImago Journal Rank (SJR) 2018: 1.191
Source Normalized Impact per Paper (SNIP) 2018: 1.205

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Volume 46, Issue 6


High-density lipoprotein cholesterol and paraoxonase 1 (PON1) genetics and serum PON1 activity in prepubertal children in Spain

Carmen Garcés / Laura López-Simón / Rafael Rubio / Mercedes Benavente / Beatriz Cano / Henar Ortega / Manuel de Oya


Background: Oxidative stress plays an important role in atherosclerosis. Paraoxonase 1 (PON1) is a high-density lipoprotein (HDL)-associated enzyme that inhibits low-density lipoprotein (LDL) oxidation and may play a protective role against coronary heart disease. The aim of this study was to analyze the relationship between HDL-cholesterol (HDL-C) and PON1 in a Spanish prepubertal population with high plasma HDL-C levels.

Methods: The study population included 1266 children between the ages of 6 and 8 years. Serum PON1 activity was measured by the hydrolysis of paraoxon. PON1 192Q/R and PON1 55L/M polymorphisms were analyzed by PCR and restriction analysis.

Results: The prevalence of the less common PON1 192R and PON 55M alleles in this population was 30% and 38%, respectively. No significant correlations between serum PON1 activity and lipid profile were observed. Multiple linear regression analysis showed that the PON1 192Q/R polymorphism accounts for 69% of PON1 activity in the children in the study, with the PON1 55L/M polymorphism accounting for an additional 5% of this variation in boys, and for an additional 3% together with HDL-C concentration in girls.

Conclusions: PON1 192Q/R polymorphism is the main determinant of PON1 activity in the prepubertal population in this study, accounting for around 70% of serum PON1 activity. HDL-C concentration has a small contribution to serum PON1 activity in girls.

Clin Chem Lab Med 2008;46:809–13.

Keywords: children; high-density lipoprotein cholesterol; paraoxonase activity; paraoxonase polymorphisms

About the article

Corresponding author: Dr. Carmen Garcés, Lipid Laboratory, Fundación Jiménez Díaz, Avda. Reyes Católicos, 2, 28040 Madrid, Spain Phone/Fax: +34-91-5432880,

Received: 2007-12-12

Accepted: 2008-02-14

Published in Print: 2008-06-01

Citation Information: Clinical Chemistry and Laboratory Medicine, Volume 46, Issue 6, Pages 809–813, ISSN (Online) 1437-4331, ISSN (Print) 1434-6621, DOI: https://doi.org/10.1515/CCLM.2008.163.

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