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Arquivos Brasileiros de Endocrinologia & Metabologia

On-line version ISSN 1677-9487


MORETTO, Renata Loureiro; PEDRO, Ana Beatriz P.; LEITE, Alex Carvalho  and  ROMALDINI, João Hamilton. Evaluation of body weight in patients with Graves' disease during the treatment with methimazole. Arq Bras Endocrinol Metab [online]. 2012, vol.56, n.6, pp.364-369. ISSN 1677-9487.

OBJECTIVE: To evaluate weight change during hyperthyroidism treatment, and to correlate it with IL-6 and TNF-alpha concentrations. SUBJECTS AND METHODS: Forty two patients were included. Body weight (BW), body mass index (BMI), clinical and laboratory characteristics were recorded. IL-6 and TNF-alpha were determined before treatment with methimazole (MMI) and in euthyroidism. RESULTS: BW was 59.62 ± 11.5 kg in hyperthyroidism, and 69.91 ± 14.4 kg in euthyroidism (p < 0.001). BMI increased from 23.1 ± 3.8 kg/m2 to 27 kg/m2 ± 4.7 during treatment (p < 0.0001). Before treatment, 66.6% subjects had BMI < 25 kg/m2 and 33.3%, BMI > 25 kg/m2. In euthyroidism, 38% of patients had BMI < 25 kg/m2 and 62%, BMI > 25 kg/m2 (p = 0.01). In euthyroidism, we found a significant reduction in IL-6 and TNF-alpha concentrations, but no correlation between IL-6 and TNF-alpha, and BW or BMI. CONCLUSION: An important increase in BW and BMI was observed during hyperthyroidism treatment, and IL-6 and TNF-alpha alterations were only related with return to euthyroidism.

Keywords : Hyperthyroidism; tumour necrosis factor alpha; interleukin-6; methimazole; thyroid hormone; body weight.

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