Protein carbonyl levels, glutathione S-transferase polymorphisms and risk of colorectal cancer

Chih Ching Yeh, Ching Yu Lai, Ling Ling Hsieh, Reiping Tang, Fang Yang Wu, Fung Chang Sung

Research output: Contribution to journalArticle

42 Citations (Scopus)

Abstract

Oxidative stress has been associated with the carcinogenesis of colorectal cancer. Glutathione S-transferases (GSTs) modulate the elimination of free radical.We conducted a case-control study to examine the interaction between oxidative stress and GSTs polymorphisms on colorectal cancer risk. This study recruited 727 pathologically confirmed colorectal adenocarcinoma cases and 736 sex- and age-matched controls. Plasma protein carbonyls, as a parameter of oxidative stress, were measured using enzymelinked immunosorbent assay. Genotypes of GSTM1, GSTT1 and GSTP1 genes were determined using polymerase chain reaction methods. The protein carbonyl levels were significantly higher in cases than in controls and exerted a dose-response relationship (P for trend <0.001). Compared with the first carbonyl quartile subjects, those in the second, third and fourth quartiles had odds ratios (ORs) of 1.54 [95% confidence interval (CI) = 1.13-2.10], 1.52 (95% CI = 1.11-2.07) and 1.98 (95% CI = 1.46-2.67), respectively. This effect was significantly modified by GSTM1 genotype (P for interaction = 0.037). The three-way interaction analysis revealed that interactions between GSTM1 genotype and cigarette smoking and between GSTT1 genotype and alcohol drinking further modified the oxidative stress contribution for colorectal cancer (p for interaction were 0.067 and 0.054, respectively). The impact of oxidative stress was more prominent among eversmokers with GSTM1-null genotype (OR = 3.45, 95%CI = 1.70- 6.97) and ever-drinkers with GSTT1-present genotype (OR = 3.87, 95% CI = 1.82-8.25). Our results indicate that interaction between oxidative stress and GSTs polymorphisms may play an important role in the pathogenesis of colorectal cancer.

Original languageEnglish
Article numberbgp286
Pages (from-to)228-233
Number of pages6
JournalCarcinogenesis
Volume31
Issue number2
DOIs
Publication statusPublished - Feb 2010
Externally publishedYes

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Glutathione Transferase
Colorectal Neoplasms
Oxidative Stress
Genotype
Confidence Intervals
Proteins
Odds Ratio
Immunosorbents
Alcohol Drinking
Free Radicals
Case-Control Studies
Blood Proteins
Carcinogenesis
Adenocarcinoma
Smoking
Polymerase Chain Reaction
Genes

ASJC Scopus subject areas

  • Cancer Research

Cite this

Protein carbonyl levels, glutathione S-transferase polymorphisms and risk of colorectal cancer. / Yeh, Chih Ching; Lai, Ching Yu; Hsieh, Ling Ling; Tang, Reiping; Wu, Fang Yang; Sung, Fung Chang.

In: Carcinogenesis, Vol. 31, No. 2, bgp286, 02.2010, p. 228-233.

Research output: Contribution to journalArticle

Yeh, Chih Ching ; Lai, Ching Yu ; Hsieh, Ling Ling ; Tang, Reiping ; Wu, Fang Yang ; Sung, Fung Chang. / Protein carbonyl levels, glutathione S-transferase polymorphisms and risk of colorectal cancer. In: Carcinogenesis. 2010 ; Vol. 31, No. 2. pp. 228-233.
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abstract = "Oxidative stress has been associated with the carcinogenesis of colorectal cancer. Glutathione S-transferases (GSTs) modulate the elimination of free radical.We conducted a case-control study to examine the interaction between oxidative stress and GSTs polymorphisms on colorectal cancer risk. This study recruited 727 pathologically confirmed colorectal adenocarcinoma cases and 736 sex- and age-matched controls. Plasma protein carbonyls, as a parameter of oxidative stress, were measured using enzymelinked immunosorbent assay. Genotypes of GSTM1, GSTT1 and GSTP1 genes were determined using polymerase chain reaction methods. The protein carbonyl levels were significantly higher in cases than in controls and exerted a dose-response relationship (P for trend <0.001). Compared with the first carbonyl quartile subjects, those in the second, third and fourth quartiles had odds ratios (ORs) of 1.54 [95{\%} confidence interval (CI) = 1.13-2.10], 1.52 (95{\%} CI = 1.11-2.07) and 1.98 (95{\%} CI = 1.46-2.67), respectively. This effect was significantly modified by GSTM1 genotype (P for interaction = 0.037). The three-way interaction analysis revealed that interactions between GSTM1 genotype and cigarette smoking and between GSTT1 genotype and alcohol drinking further modified the oxidative stress contribution for colorectal cancer (p for interaction were 0.067 and 0.054, respectively). The impact of oxidative stress was more prominent among eversmokers with GSTM1-null genotype (OR = 3.45, 95{\%}CI = 1.70- 6.97) and ever-drinkers with GSTT1-present genotype (OR = 3.87, 95{\%} CI = 1.82-8.25). Our results indicate that interaction between oxidative stress and GSTs polymorphisms may play an important role in the pathogenesis of colorectal cancer.",
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