Abstract
To explore the relationship between genetic polymorphisms in apurinic/apyrimidinic endonuclease (APE1) and ADP ribosyltransferase (ADPRT) and individuals' susceptibility to chronic benzene poison ing (BP). A case-control study was conducted. One hundred and fifty-two B P patients and 152 workers occupationally exposed to benzene without poisoning manifestations were investigated. The mismatched bases combined to create restriction site with restrained fragment length polymorphism technique (CRS-RFLP) was used for detecting the single nucleotide polymorphisms (SNPs) at Asp148Glu of APE1 gene and Val762Ala of ADPRT gene. There was no significant difference in the distribution of genotypes of APE1Asp148Glu and ADPRTVal762Ala between the patients and the control groups. Compared with individuals having genotype of APE1Asp148Glu T/T without habit of alcohol consumption, there was a 4.13 times increased risk of BP for the alcohol user with genotype of APE1Asp148Glu T/T (OR = 4.13, 95% CI: 1.07 - 15.85, P = 0.03). The analysis of Logistic regression showed that smoking may play some role in modifying the risk of cironic benzene poisoning (OR = 0.33, 95% CI: 0.14 - 0.75, P = 0.01). The genetic polymorphisms in APE1Asp148Glu, ADPRTVal762Ala are not related to the risk of BP. Potential interaction is found between alcohol consumption and polymorphism of APE1Asp148Glu. Further study is needed to elucidate this interaction.
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