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ASSOCIATION OF PARAOXONASE 1 L55M AND Q192R SINGLE-NUCLEOTIDE POLYMORPHISMS WITH AGE-RELATED MACULAR DEGENERATION

Söğüt, Erkan MD*; Ortak, HüSeyin MD; Aydoğan, Leyla PhD*; Benlİ, İsmaİl MSc*

Retina:
doi: 10.1097/IAE.0b013e318287da59
Original Study
Abstract

Purpose: To determine if paraoxonase 1 (PON1) gene polymorphisms have an effect on the risk of having age-related macular degeneration (AMD).

Methods: The study population consisted of 142 patients who were diagnosed with either exudative or atrophic AMD and 138 sex- and age-matched controls without AMD. Genotyping of the PON1 L55M and Q192R single-nucleotide polymorphisms was performed using real-time polymerase chain reaction and commercially produced kits. A full ophthalmic evaluation was performed in each subject, and all subjects were screened for hypertension, diabetes, hypercholesterolemia, and smoking history.

Results: The PON1 MM and QQ genotypes were less frequent in patients with AMD than in control subjects (MM: 4 vs. 13%, P = 0.015; QQ: 15 vs. 27%, P = 0.020). A multivariate logistic regression analysis was also conducted. After adjusting for age, gender, and the prevalence of smoking, hypertension, diabetes, and hypercholesterolemia, the MM and QQ genotypes (MM/QQ vs. LL + LM/QR + RR) were found to be associated with a decreased risk of AMD (MM: odds ratio = 0.24, P = 0.007, 95% confidence interval: 0.09–0.68; QQ: odds ratio = 0.46, P = 0.013, 95% confidence interval: 0.25–0.85).

Conclusion: The authors found that subjects with the PON1 MM and QQ genotypes had a lower risk of AMD.

In Brief

After screening 142 patients with age-related macular degeneration (AMD) and 138 sex- and age-matched controls, PON1 L55M and Q192R single-nucleotide polymorphisms were found to be associated with AMD. Subjects with the PON1 MM and QQ genotypes had a lower risk of having AMD.

Author Information

Departments of *Biochemistry, and

Ophthalmology, Faculty of Medicine, Gaziosmanpaşa University, Tokat, Turkey.

Reprint requests: Erkan Söğüt, MD, Department of Biochemistry, Faculty of Medicine, Gaziosmanpaşa University, Tokat, Turkey; e-mail: erkanchems@yahoo.com

The authors declare no conflict of interest.

© 2013 by Ophthalmic Communications Society, Inc.