Abstract
Сhildren are often subjected to psychological or physical violence, experience strong emotional distress. Early life stress may lead to disorders of somato-sexual development, to delayed (in boys) or accelerated (in girls) puberty, delayed growth, immune system disorders, alteration of mental health. The sexual performance of adult men who experienced chronic stress during adolescence is not reflected in the scientific medical literature. Deferred effect of stress at adolescence on the androgen profile and sexual behavior of laboratory male animals has been studied very poorly. There are no data on long-term oxidative effects of stress experienced by human and animal adolescents in relation to the organs of the reproductive system. The aims of this work were to explore the sexual behavior, testosterone levels in blood and lipid peroxidation (LPO) in the testes of adult male rats in a distant period of time after chronic immobilization stress during puberty. White male rats were subjected to immobilization in plastic tubes for 1 hour a day during postnatal days 30-45. The non-stressed animals were used as controls. Some rats were decapitated at the age of 6 months, and the trunk blood samples were collected for hormone assay. Testosterone levels in blood serum were determined by immunoassay. The testicles were isolated to determine the content of the LPO products. At 7 months of age, the males were tested for the exhibition of male-type sexual behavior, and at 8 months for female-type sexual behavior after orchiectomy and priming with estradiol and progesterone. In stressed at puberty adult rats, testosterone levels did not differ from those of controls. Pubertal stress significantly reduced latency of the first and second mounts, that is increased the motivational component of male sexual behavior without increasing the number of mounts and intromissions. Stressed rats did not exhibit lordosis reaction in the presence of active male. As a result of stress in rats during puberty, the content of malonic dialdehyde and diene conjugates increased in the testicles of adult animals, which indicates the presence of oxidative stress.
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