News | Prenatal Phthalate Exposure May Affect Future Female Fertility, Study Finds
At the 2023 Endocrine Society annual meeting, Dr. Mary Bunnell of the University of Illinois Urbana-Champaign presented research on the potential reproductive toxicity of phthalates in females. Female mouse offspring exposed during gestation had altered hormone levels at birth that could affect future fertility.
Prenatal Phthalate Exposure May Disrupt Hormones
Mouse embryos exposed to phthalates had lower testosterone levels during gestation than unexposed embryos. After birth, exposed females also had significantly lower estradiol levels. Testosterone and estradiol are key sex hormones important to reproductive-organ development and future fertility in males and females, respectively.
Dr. Bunnell said: “Gestation and the neonatal period are critical for reproductive-organ development, and fluctuations in sex hormone levels have long-term effects on reproductive health. We found that phthalates not only affect sex hormone secretion but may also cause sex-specific reproductive toxicity by altering the liver's metabolic capacity.”
Widespread Phthalate Exposure and Health Risks
Phthalates are widely used endocrine-disrupting chemicals found in hundreds of products, including toys, vinyl flooring, wallpaper, detergents, lubricants, food packaging, and cosmetics. The U.S. Food and Drug Administration (FDA) notes that phthalates can migrate from packaging into food, making everyday exposure difficult to avoid. During pregnancy they can cross the placenta and affect the developing fetus.
Dr. Bunnell added: “Although phthalates affect both male and female reproductive systems, this study highlights the liver's key role in sex-specific effects and may offer a new direction for clinical strategies addressing phthalate exposure.”
Methods: Modeling Human Exposure
The study compared two groups of mice to model common human phthalate exposure. Pregnant mice received an oral phthalate mixture at doses close to typical daily human exposure, while the control group was not exposed. Hormone measurements after birth showed that female embryos exposed during gestation had significantly lower levels than unexposed embryos.
No significant hormone changes were observed in male mice, but gestational hormone changes were closely related to liver metabolism and were sex-specific. This offers a new perspective on phthalate reproductive toxicity, particularly the role of liver metabolism.
Future Directions: Informing Clinical Strategies
Researchers hope that national data integration and broader experiments will clarify the long-term effects of phthalates on different reproductive systems and support evidence-based health guidance for women and pregnant women. The study may offer new directions for interventions addressing phthalate exposure.
News | Prenatal Phthalate Exposure May Affect Future Female Fertility, Study Finds
News | Prenatal Phthalate Exposure May Affect Future Female Fertility, Study Finds
At the 2023 Endocrine Society annual meeting, Dr. Mary Bunnell of the University of Illinois Urbana-Champaign presented research on the potential reproductive toxicity of phthalates in females. Female mouse offspring exposed during gestation had altered hormone levels at birth that could affect future fertility.
Prenatal Phthalate Exposure May Disrupt Hormones
Mouse embryos exposed to phthalates had lower testosterone levels during gestation than unexposed embryos. After birth, exposed females also had significantly lower estradiol levels. Testosterone and estradiol are key sex hormones important to reproductive-organ development and future fertility in males and females, respectively.
Dr. Bunnell said: “Gestation and the neonatal period are critical for reproductive-organ development, and fluctuations in sex hormone levels have long-term effects on reproductive health. We found that phthalates not only affect sex hormone secretion but may also cause sex-specific reproductive toxicity by altering the liver's metabolic capacity.”
Widespread Phthalate Exposure and Health Risks
Phthalates are widely used endocrine-disrupting chemicals found in hundreds of products, including toys, vinyl flooring, wallpaper, detergents, lubricants, food packaging, and cosmetics. The U.S. Food and Drug Administration (FDA) notes that phthalates can migrate from packaging into food, making everyday exposure difficult to avoid. During pregnancy they can cross the placenta and affect the developing fetus.
Dr. Bunnell added: “Although phthalates affect both male and female reproductive systems, this study highlights the liver's key role in sex-specific effects and may offer a new direction for clinical strategies addressing phthalate exposure.”
Methods: Modeling Human Exposure
The study compared two groups of mice to model common human phthalate exposure. Pregnant mice received an oral phthalate mixture at doses close to typical daily human exposure, while the control group was not exposed. Hormone measurements after birth showed that female embryos exposed during gestation had significantly lower levels than unexposed embryos.
No significant hormone changes were observed in male mice, but gestational hormone changes were closely related to liver metabolism and were sex-specific. This offers a new perspective on phthalate reproductive toxicity, particularly the role of liver metabolism.
Future Directions: Informing Clinical Strategies
Researchers hope that national data integration and broader experiments will clarify the long-term effects of phthalates on different reproductive systems and support evidence-based health guidance for women and pregnant women. The study may offer new directions for interventions addressing phthalate exposure.
Source:
Collected online