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Exposure to bisphenol A is associated with recurrent miscarriage
Mayumi Sugiura-Ogasawara1, Yasuhiko Ozaki, Shin-ichi Sonta
1Department of Obstetrics and Gynecology, Nagoya City University Medical School, Nagoya, Japan. og.mym@med.nagoya-cu.ac.jp
Human Reproduction (Oxford, England)
|June 11, 2005
Summary
High bisphenol A exposure is linked to recurrent miscarriage, particularly with antinuclear antibodies (ANAs). Further research is needed to understand this association and its impact on pregnancy outcomes.
Area of Science:
- Reproductive toxicology
- Endocrinology
- Immunology
Background:
- The impact of high bisphenol A (BPA) exposure on recurrent miscarriage and associated immunoendocrine factors remains largely uncharacterized.
- Recurrent miscarriage affects numerous women, highlighting the need to investigate environmental influences like BPA.
Purpose of the Study:
- To investigate the association between serum bisphenol A levels and recurrent miscarriage.
- To examine the relationship between BPA exposure and specific immunoendocrine markers, including antiphospholipid antibodies (aPLs), antinuclear antibodies (ANAs), natural killer (NK) cell activity, and hormone levels.
Main Methods:
- Serum BPA levels were measured in 45 women with recurrent miscarriage and 32 controls.
- Evaluated aPLs, ANAs, NK cell activity, prolactin, progesterone, TSH, and free T4.
- Prospectively monitored subsequent pregnancy outcomes and embryonic karyotypes.
Main Results:
- Women with recurrent miscarriage had significantly higher mean serum BPA levels (2.59 ng/ml) compared to controls (0.77 ng/ml).
- High BPA exposure was associated with the presence of ANAs but not with hypothyroidism, hyperprolactinemia, luteal phase defects, NK cell activity, or aPLs.
- Elevated BPA levels alone did not predict future miscarriage events.
Conclusions:
- Bisphenol A exposure is associated with recurrent miscarriage.
- The association appears linked to ANAs, suggesting a potential role in the pathophysiology of recurrent pregnancy loss.