Exposure to phthalates: germline dysfunction and aneuploidy

Area of Science:

• Reproductive Toxicology
• Environmental Health
• Genetics

Background:

• Environmental chemicals, such as phthalates, are pervasive and impact human physiology, particularly reproductive health.
• Phthalates are endocrine-disrupting chemicals widely used as plasticizers.
• Exposure to phthalates is linked to increased rates of human aneuploidy, a cause of genetic disorders.

Purpose of the Study:

• To review epidemiological and experimental studies on phthalates' role in germline dysfunction.
• To discuss factors influencing susceptibility, such as diet and genetic polymorphisms.
• To explore sex-specific effects and conserved mechanisms across species.

Main Methods:

• Review of recent epidemiological studies.
• Analysis of experimental research investigating phthalate effects.
• Comparative analysis across human, mammalian, and nonmammalian models.

Main Results:

• Phthalate exposure is associated with increased apoptosis, oxidative stress, DNA damage, and impaired genomic integrity, leading to aneuploidy.
• Subject variability, influenced by diet and genetic polymorphisms, affects phthalate toxicity.
• Sex-specific effects and conserved mechanisms of phthalate-induced reproductive issues are observed.

Conclusions:

• Phthalates pose a significant risk to reproductive health by disrupting germline function and causing aneuploidy.
• Understanding subject variability and sex-specific effects is crucial for accurate risk assessment.
• Model organisms are valuable tools for elucidating mechanisms of phthalate toxicity and informing chemical risk assessment.