Telomere Length in Workers Was Effected by Omethoate Exposure, GSTM1 Deletion, Interaction Between Smoking and GSTP1 Polymorphisms.

Objective: The aim of this study was to explore the association between telomere length and metabolizing enzyme gene polymorphisms and environmental factors in omethoate-exposed workers.

Methods: The gene-environment interactions were analyzed with generalized linear model method.

Results: The relative telomere lengths in the individuals with GSTM1-deletion were longer than that in non-deletion genotype in the control group (P = 0.011); the relative telomere lengths with GG+AG genotypes in GSTP1 rs1695 were longer than that of AA genotype in the exposure group (P = 0.039). The interaction between the GG+AG genotypes in GSTP1 rs1695 and smoking exposure had significant effect on telomere length (P < 0.05).

Conclusions: The prolongation of relative telomere length in omethoate-exposed workers was associated with GSTM1-deletion, GG+AG genotypes, and interactions of GG+AG genotypes and smoking factor.