American journal of obstetrics and gynecology · 2011
Antithyroid antibodies and parity: further evidence for microchimerism in autoimmune thyroid disease.
СтатьяПоддержка NIH: внешняя программаНазвание и аннотация: Перевод в очереди
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Greer Laura G, Casey Brian M, Halvorson Lisa M, Spong Catherine Y, McIntire Donald D, Cunningham F Gary
Аннотация
OBJECTIVE: Fetal microchimerism may have a role in development of autoimmune thyroid disorders. Using parity as a surrogate for increasing fetal cell exposure, we analyzed its association with thyroid peroxidase antibody levels.
STUDY DESIGN: Secondary analysis of serum thyroid analytes determined in 17,298 women from a population-based prospective study between 2001 and 2003. Sera were assayed for thyrotropin, free thyroxine, and antithyroid peroxidase antibodies. We analyzed the relationship between thyroid peroxidase antibodies and increasing parity.
RESULTS: The incidence of abnormally elevated thyroid peroxidase antibody levels (>50 IU/mL) increased with advancing parity, but was not significant after adjustment for maternal characteristics. However, at higher thyroid peroxidase antibody levels (>500 IU/mL), a significant relationship with advancing parity persisted after adjustments (P = .002).
CONCLUSION: Advancing parity is associated with an increased risk for high serum concentrations of antithyroid peroxidase antibodies. This suggests fetal microchimerism may play a role in development of autoimmune thyroid disorders.
STUDY DESIGN: Secondary analysis of serum thyroid analytes determined in 17,298 women from a population-based prospective study between 2001 and 2003. Sera were assayed for thyrotropin, free thyroxine, and antithyroid peroxidase antibodies. We analyzed the relationship between thyroid peroxidase antibodies and increasing parity.
RESULTS: The incidence of abnormally elevated thyroid peroxidase antibody levels (>50 IU/mL) increased with advancing parity, but was not significant after adjustment for maternal characteristics. However, at higher thyroid peroxidase antibody levels (>500 IU/mL), a significant relationship with advancing parity persisted after adjustments (P = .002).
CONCLUSION: Advancing parity is associated with an increased risk for high serum concentrations of antithyroid peroxidase antibodies. This suggests fetal microchimerism may play a role in development of autoimmune thyroid disorders.