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  • Title: Changes in adipocyte hormones leptin, resistin, and adiponectin in thyroid dysfunction.
    Author: Yaturu S, Prado S, Grimes SR.
    Journal: J Cell Biochem; 2004 Oct 15; 93(3):491-6. PubMed ID: 15372626.
    Abstract:
    Thyroid hormones as well as the recently discovered secretory products of adipose tissue adiponectin and resistin take part in energy metabolism. To study the changes in the adipocyte hormones with changes in the thyroid functional status, we measured adiponectin, resistin, and leptin in 69 subjects with Graves' disease before and 32 patients at follow up after treatment for hyperthyroidism at hypothyroid state. Concentrations of serum adiponectin and resistin were higher in hyperthyroid state than in hypothyroid state (adiponectin: 5.73 +/- 1.1 vs. 3.0 +/- 0.5 ng/ml, P = 0.03) (resistin: 6.378 +/- 0.6 vs. 5.81 +/- 0.57 ng/ml, P < 0.0001). Resistin levels correlate positively with free t4(r = 0.37, P < 0.01), free t3 levels(r = 0.33, P < 0.01) and negatively with TSH(r = -0.22, P < 0.05). Adiponectin levels correlate with free t4(r = 0.33, P < 0.01) and free t3 (r = 0.44, P < 0.01). Though the adiponectin levels did not correlate with leptin or resistin levels, strong positive correlation of both resistin and adiponectin with thyroid hormones is noted. Serum levels of leptin did not change with change in the thyroid functional status (leptin: 53.38 +/- 2.47 vs. 55.10 +/- 2.58 NS). Leptin levels did not correlate with resistin and adiponectin. We conclude that thyroid function has effect on adipocyte hormones adiponectin and resistin but not leptin.
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