Research Progress on Toxic Effects of Benzo(a)pyrene on Reproductive System and Its Mechanism
Benzo(a)pyrene(BaP),as a member of the polycyclic aromatic hydrocarbons(PAHs),is the earliest dis-covered and most representative environmental pollutant.It enters the human body through the air,food,and water,causing cellular oxidative stress damage,DNA damage,and abnormal gene expression,leading to cell death.Studies have shown that when male and female animals are exposed to BaP,their reproductive organs,cells,and hormone levels are affected,which in turn will affect the formation of fertilized eggs and embryonic development,resulting in adverse pregnancy outcomes.Hence,the reproductive toxicity of BaP has received more attention in recent years.Its mechanism of action on reproductive development includes alteration of intracellular reactive oxygen species levels,induction of cellular DNA damage,and modulation of genetic changes related to reproductive development,steroid synthesis and pro-apoptosis.BaP,as an environmental toxicant,could influence the stability of the ecological environment,the reproductive development of organisms and destroy the diversity of species in the ecosystems.In this review,we will detailly elaborate on the toxic effects and mechanisms of BaP on the reproductive system,and provide a theoretical evidence for prevention reproductive harm caused by BaP and the reduction of adverse pregnancy outcomes,with the aim to providing an effective reference for the study of BaP's toxicity to the environment and organisms,and for the rational prevention and mitigation of the health effects of exposure to BaP or other environmental toxins.
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