TY - JOUR
T1 - Prevalence of post-partum thyroiditis in Liguria (Italy)
T2 - An observational study
AU - Filippi, U.
AU - Brizzolara, R.
AU - Venuti, D.
AU - Cesarone, A.
AU - Maritati, V. A.
AU - Podestà, M.
AU - Yung, W. F.
AU - Bottaro, L. C.
AU - Orselli, A.
AU - Chiappori, A.
AU - Schiavo, M.
AU - Caputo, M.
AU - Bonassi, S.
AU - Bagnasco, M.
PY - 2008/12
Y1 - 2008/12
N2 - Background: Post-partum thyroiditis (PPT) is an autoimmune disorder occurring within the first year following delivery. A variable prevalence has been reported in different surveys. We prospectively evaluated PPT prevalence and outcome in a cohort of pregnant women living in a well-defined geographic area. Aim: A subset from a group of healthy women consecutively evaluated for thyroid function and thyroid autoimmunity during pregnancy, referring to the same obstetric unit, were followed up at 4-6 months and 1 yr after delivery. Materials/subjects and methods: Follow-up for PPT was performed in 258 pregnant women. Control data were obtained in a comparable group of healthy non-pregnant women. Free T3 (fT3), free T4 (fT4), TSH thyroglobulin/thyroid peroxidase autoantibodies (TgAb/TPOAb), and urinary iodine excretion were measured. Results: Autoantibody positivity was observed in 9.3% of pregnant, similar to control women. Forty-three out of 59 autoantibody-positive women were followed up; 23 showed PPT at the first control, 18 had hypothyroidism at 1 yr (5 had not shown PPT at the first control). Among 215 out of 584 autoantibody-negative women followed up, 27 developed PPT (15 of them without thyroid autoantibodies); 16 developed thyroid autoantibodies without PPT. After 1 yr, 9 women had hypothyroidism: only 1 of them was autoantibody-negative at the former control. Urinary iodine was increased in several pregnant women. Conclusions: An overall PPT prevalence of about 18% may be estimated. PPT was also observed in autoantibody-negative women. Differences with other surveys may be related to both study protocol and characteristics of the population studied.
AB - Background: Post-partum thyroiditis (PPT) is an autoimmune disorder occurring within the first year following delivery. A variable prevalence has been reported in different surveys. We prospectively evaluated PPT prevalence and outcome in a cohort of pregnant women living in a well-defined geographic area. Aim: A subset from a group of healthy women consecutively evaluated for thyroid function and thyroid autoimmunity during pregnancy, referring to the same obstetric unit, were followed up at 4-6 months and 1 yr after delivery. Materials/subjects and methods: Follow-up for PPT was performed in 258 pregnant women. Control data were obtained in a comparable group of healthy non-pregnant women. Free T3 (fT3), free T4 (fT4), TSH thyroglobulin/thyroid peroxidase autoantibodies (TgAb/TPOAb), and urinary iodine excretion were measured. Results: Autoantibody positivity was observed in 9.3% of pregnant, similar to control women. Forty-three out of 59 autoantibody-positive women were followed up; 23 showed PPT at the first control, 18 had hypothyroidism at 1 yr (5 had not shown PPT at the first control). Among 215 out of 584 autoantibody-negative women followed up, 27 developed PPT (15 of them without thyroid autoantibodies); 16 developed thyroid autoantibodies without PPT. After 1 yr, 9 women had hypothyroidism: only 1 of them was autoantibody-negative at the former control. Urinary iodine was increased in several pregnant women. Conclusions: An overall PPT prevalence of about 18% may be estimated. PPT was also observed in autoantibody-negative women. Differences with other surveys may be related to both study protocol and characteristics of the population studied.
KW - Iodine supply
KW - Post partum thyroiditis
KW - Thyroglobulin antibodies
KW - Thyroid disease
KW - Thyroid peroxidase antibodies
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M3 - Article
C2 - 19246971
AN - SCOPUS:63049129677
VL - 31
SP - 1063
EP - 1068
JO - Journal of Endocrinological Investigation
JF - Journal of Endocrinological Investigation
SN - 0391-4097
IS - 12
ER -