[Genetic polymorphisms of MPO, NQO1, GSTP1, UGT1A6 associated with susceptibility of chronic benzene poisoning].

Abstract

OBJECTIVE:

To explore the relationship between genetic polymorphisms in MPO, NQO1, GSTP1, UGT1A6 and susceptibility to chronic benzene poisoning (BP).

METHODS:

A case-control study was conducted. 268 BP patients and 268 workers occupationally exposed to benzene without poisoning manifestations were investigated. The genotype of MPO (rs7208693), NQO1 (rs1800566), GSTP1 ( rs947894 ) and UGT1A6 (rs6759892, rs1105879, rs4124874 ,rs3755319 ,rs887829 and rs4148323) were tested by the TaqMan PCR method.

RESULTS:

There was a 0.675-fold (95% CI 0.434 - 0.994, P = 0.046) decreased risk of BP in the subjects with GSTP1 rs947894 G alleles compared with those carrying AA genotype. In the subjects carrying allele of MPO rs7208693 A, the risk of BP increased for the individuals carrying allele of UGT1A6 rs6759892 G (OR = 2.702, P = 0.024) compared to those with TT genotype or the individusals carrying allel of UGT1A6 rs1105879 C (OR = 2.619, P = 0.035) compared to those with TT genotype. In drinking population, the individuals carrying the NQO1 rs1800566 TT homozygote genotype had a 9.000-fold (5% CI 1.460 - 55.478, P = 0.021) risk of BP compared to those with CT + CC genotypes. In smoking population, there was 7.000-fold (95% CI 1.555 - 31.575, P = 0.012) of risk in BP subjects carrying NQO1 rs1800566T/T genotype, compared with those carrying CC + CT genotype. Haplotyes analysis of polymorphisms in UGT1A6 showed that compared with those carrying TAATGG haplotype, there was a 1.446-fold (OR = 1.446, 95% CI 1.005 - 2.080, P = 0.046) increased risk of BP for those carrying TACGGG haplotype.

CONCLUSION:

The subjects carrying allele of MPO rs7208693 A and UGT1A6 rs6759892 G or rs1105879 C at the same time could be more susceptible to BP. The subjects carrying NQO1 rs1800566 TT genotype and together with the habit of smoking or drinking could be more susceptible to BP. Those subjects carrying TAATGG haplotype of UGT1A6 could increase the risk of BP. Further studies should be needed on the association between the genetic polymorphisms in GSTP1 and the risk of BP.

• Authors: Pin Sun, Zhongbin Zhang, Junxiang Wan, Minhua Shao
• Journal: Wei sheng yan jiu = Journal of hygiene research (Wei Sheng Yan Jiu) Vol. 36 Issue 1 Pg. 11-5 (Jan 2007) ISSN: 1000-8020 [Print] China
• PMID: 17424838 (Publication Type: English Abstract, Journal Article)

Chemical References

• Peroxidase
• NAD(P)H Dehydrogenase (Quinone)
• NQO1 protein, human
• UDP-glucuronosyltransferase, UGT1A6
• Glucuronosyltransferase
• GSTP1 protein, human
• Glutathione S-Transferase pi
• Benzene

Topics

• Adult
• Alleles
• Benzene (poisoning)
• Case-Control Studies
• Female
• Genetic Predisposition to Disease
• Genotype
• Glucuronosyltransferase (genetics)
• Glutathione S-Transferase pi (genetics)
• Humans
• Male
• Middle Aged
• NAD(P)H Dehydrogenase (Quinone) (genetics)
• Occupational Diseases (genetics)
• Occupational Exposure
• Peroxidase (genetics)
• Polymorphism, Genetic
• Young Adult