Oral exposure to atrazine modulates hormone synthesis and the transcription of steroidogenic genes in male peripubertal mice

► Endocrine disruption effects of ATZ in peripubertal male mice were investigated. ► ATZ decreases the body weight and increases the relative testis weight. ► ATZ affects the serum androgen-estrogen homeostasis and increases aromatase activity. ► ATZ decreases the transcription of steroidogenic genes significantly. ► Decreasing of steroidogenic genes expression might be an explanation for ATZ induced endocrine disruption.