Oxidative damage biomarker levels according to Mn-SOD and GST gene polymorphisms in preschool children

You Kyung Shin, Ji Won Choi, Se Young Oh, Jayong Chung

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Purpose: Genetic polymorphisms in antioxidant defense and detoxification genes may modulate the levels of oxidative stress biomarkers. Methods: A total of 301 healthy preschool-aged children in the Seoul and Kyung-gi areas were recruited. DNA was extracted from blood for genotyping of manganese superoxide dismutase (Mn-SOD) Val16Ala, glutathione S-transferase (GST) P1 Ile105Val, GSTT1 present/null, and GSTM1 present/null polymorphisms by PCR-restriction fragment length polymorphism or multiplex PCR analyses. In addition to a questionnaire survey, the levels of urinary 8-hydroxyl-2-deoxiguanosine (8-OHdG) and plasma malondialdehyde (MDA) were measured by ELISA. Results: Significantly higher urinary 8-OHdG concentrations were observed in GSTP1 Ile/Val + Val/Val genotype (p = 0.030), and tended to be higher in Mn-SOD Val/Val genotype (p = 0.065). On the other hand, exposure to environmental tobacco smoking (ETS) and interaction between ETS and gene polymorphisms did not significantly influence either urinary 8-OHdG concentrations or serum MDA. Conclusion: Based on our findings, GSTP1 Ile/Val gene polymorphisms might modulate the levels of oxidative stress biomarkers in healthy preschool children.

Original languageEnglish
Pages (from-to)468-475
Number of pages8
JournalJournal of Nutrition and Health
Volume48
Issue number6
DOIs
Publication statusPublished - Dec 2015

Bibliographical note

Publisher Copyright:
© 2015 The Korean Nutrition Society.

Keywords

  • 8-Hydroyxyl-2-deoxyguanosine
  • Genetic polymorphism
  • Glutathione S-transferase
  • Mn-superoxide dismutase

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