Certain genetic background (mainly Y chromosome haplogroups, Y-hg) may modify the susceptibility of certain environmental exposure to some diseases. Compared with respective main effects of genetic background or environmental exposure, interactions between them reflect more realistic combined effects on the susceptibility to a disease. To identify the interactions on spermatogenic impairment, we performed Y chromosome haplotyping and measurement of 9 urinary phenols concentrations in 774 infertile males and 520 healthy controls in a Han Chinese population, and likelihood ratio tests were used to examine the interactions between Y-hgs and phenols. Originally, we observed that Y-hg C and Y-hg F* might modify the susceptibility to male infertility with urinary 4-n-octylphenol (4-n-OP) level (Pinter = 0.005 and 0.019, respectively). Subsequently, based on our results, two panels were tested to identify the possible protective sub-branches of Y-hg F* to 4-n-OP exposure, and Y-hg O3* was uncovered to interact with 4-n-OP (Pinter = 0.019). In conclusion, while 4-n-OP shows an adverse effect on spermatogenesis, Y-hg O3* makes individuals more adaptive to such an effect for maintaining basic reproductive capacity.
Ecotoxicology and Environmental Safety – Elsevier
Published: Oct 1, 2017
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