Vitamin C could help protect reproductive health in the face of a chemical contaminant in the environment, according to an experimental study that indicates a decrease in fertility impairment when this antioxidant is administered concurrently with the harmful substance. The results indicate a potential protective effect of vitamin C, but the observations are currently limited to the experimental model used.
The research was carried out by a team from the University of Missouri (Mizzou), using as an experimental model the Japanese medaka fish (Oryzias latipes – also called the rice fish), frequently used in reproductive biology studies.
Scientists analyzed the effects of potassium perchlorate, a chemical compound used in explosives, fireworks and other industrial applications, considered an emerging environmental contaminant.
In the experiment, male medaka exposed only to potassium perchlorate showed a marked decrease in fertility, associated with obvious damage to the testicles.
In contrast, fish exposed simultaneously to potassium perchlorate and vitamin C had better fertility and less signs of testicular damage compared to those that received the chemical alone.
The study, published in the journal Environmental Science & Technologyshows that exposure to potassium perchlorate induces oxidative stress, a process that produces imbalances at the cellular level that can disrupt the genes and biological pathways involved in spermatogenesis (the process of sperm formation).
The administration of vitamin C was associated with the reduction of this oxidative stress and with the restoration of some molecular mechanisms related to male fertility.
The authors emphasize that fish represent a relevant model for the study of reproductive function, because many of the genes and processes involved are similar to human ones.
However, the results cannot be directly extrapolated to humans, and further research is needed to assess whether similar effects occur in the case of human exposure.
Interest in potassium perchlorate was fueled by earlier observations of higher infertility rates among military personnel, where some data indicated elevated blood levels of this compound as a result of repeated exposure to explosives.
The current study provides experimental data supporting the substance’s negative impact on reproductive function and explores a possible strategy to reduce its effects.
The researchers note that although vitamin C is a known antioxidant, its use as a preventive intervention in the context of exposure to environmental contaminants requires further validation. The results may have relevance for people in military, industrial environments or with increased exposure to such substances, but the clinical applicability remains to be determined by future studies.
