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JOURNAL ARTICLE

Polymorphisms of pon1 and pon2 genes in hemodialyzed patients

Marija Grdić Rajković, Karmela Barišić, Dubravka Juretić, Tihana Žanić Grubišić, Zlata Flegar-Meštrić, Lada Rumora
Clinical Biochemistry 2011, 44 (12): 964-8
21620813

OBJECTIVES: Q192R, L55M and -108C>T polymorphisms of pon1 gene affect PON1 paraoxonase activity while S311C polymorphism of pon2 gene might be associated with coronary heart disease. The aims of this study were to determine the frequencies of Q192R, L55M, -108C>T and S311C polymorphisms in hemodialyzed patients and to examine the relationship between pon1 gene polymorphisms and PON1 paraoxonase activity in those patients.

DESIGN AND METHODS: The study included 238 control subjects and 263 hemodialyzed patients.

RESULTS: PON1 paraoxonase activity was lower in patients. Genotype frequencies were different between two compared groups only for L55M polymorphism, with control group having higher frequency of MM genotype. Polymorphisms of pon1 gene were associated with significant variation in PON1 paraoxonase activity in both study groups.

CONCLUSION: Our results suggest that Q192R, L55M and -108C>T polymorphisms are not by itself the causal factors leading to the lower PON1 paraoxonase activity in hemodialyzed patients.

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