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Is autoimmune thyroiditis a risk factor for early atherosclerosis in premenopausal women even if in euthyroid status?

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Abstract

Autoimmune thyroiditis (AIT) is a systemic disease. It is well-known that overt thyroid dysfunction is a cardiovascular risk factor. However, the influence of euthyroid status is unclear. The aim of this study was to evaluate the metabolic parameters and carotid intima-media thickness (CIMT) in euthyroid premenopausal women with AIT. Fourty-eight premenopausal women and 18 age-matched healthy controls attending the Endocrinology and Metabolism Clinic from 2008 to 2009 were enrolled to this cross-sectional study. Patients were divided into 2 groups according to TSH levels; patients in group 1 (n = 23) had TSH levels ≤ 2.5 μIU/mL and patients in group 2 had TSH levels > 2.5 μIU/mL (n = 25). All participants were evaluated by ultrasound for CIMT (mean of three segments in both carotid arteries) by the same experienced investigator. Fasting venous blood samples were collected to evaluate insulin resistance (HOMA-IR), TSH, FT4, plasma lipids, high-sensitive CRP (Hs-CRP), homocysteine, and fibrinogen. Carotid intima-media thickness was found to be significantly higher in patients than the controls (p < 0.001). However, there was no significant difference in average CIMT between group 1 and 2 (0.66 ± 0.08 vs 0.63 ± 0.09 mm). Anti-Tg levels were independently associated with CIMT in the patient group (p = 0.014). There were no significant correlations between serum TSH levels and BMI; waist circumference, serum lipids, and glucose levels. However, there was a positive significant correlation between TSH levels and blood pressure in the patients (for systolic blood pressure r = 0.466, p = 0.001, for diastolic blood pressure r = 0.372, p = 0.009). In the present study, it was shown that CIMT is increased in euthyroid premenopausal women with autoimmune thyroiditis compared to age-matched healthy controls.

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Authors and Affiliations

  1. Department of Endocrinology and Metabolism, Ministry of Health, Ankara Numune Training and Research Hospital, Ankara, Turkey

    Ferhat Gokay, Kerim Kucukler, Ferda Sevimli Burnik, Turkan Mete, Halise Cinar Yavuz, Dilek Berker & Serdar Guler

  2. Cayyolu Turkkonut Cevre Dostlari Sitesi, 3-B, Yenimahalle, Ankara, Turkey

    Oya Topaloglu

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  1. Oya Topaloglu
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  2. Ferhat Gokay
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Correspondence to Oya Topaloglu.

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Topaloglu, O., Gokay, F., Kucukler, K. et al. Is autoimmune thyroiditis a risk factor for early atherosclerosis in premenopausal women even if in euthyroid status?. Endocrine 44, 145–151 (2013). https://doi.org/10.1007/s12020-012-9842-5

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  • DOI: https://doi.org/10.1007/s12020-012-9842-5

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