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Diagnostic significance of serum concentrations of soluble Fas ligand (sFasL) in children with autoimmune thyroid disease.
Autoimmunity 2017 May
INTRODUCTION: The aim of the study was to assess serum levels of sFasL as a marker of thyroid dysfunction in children with autoimmune thyroid disease (AITD).
DESIGN: The group comprised 45 newly diagnosed children with Hashimoto's thyroiditis and Graves' disease versus euthyroid control group: 11 with hypothyroidism (10 girls and 1 boy, aged 12.2 ± 1.9 years), 19 children with hyperthyroidism (15 girls and 4 boys, aged 12.4 ± 4.9 years) and 15 healthy subjects (7 girls and 8 boys, aged 10.5 ± 4.8 years).
METHODS: Thyroid function (TSH, fT4, fT3), autoimmune (ATG, ATPO, TRAb) and anthropometric (weight, height, BMI, BMI-SDS, Cole index) parameters were evaluated. sFasL concentration was measured by ELISA. Nonparametric statistical test and ROC analysis were performed to assess the data.
RESULTS: We found no significant differences in serum concentrations of sFasL between boys and girls in the studied groups. Significantly higher sFasL levels (median 0.26 ng/ml) were identified in children with hypothyroidism compared with the control group (median 0.06 ng/ml, p < 0.001) and in comparison to a group of children with hyperthyroidism (median 0.14 ng/ml, p < 0.05). ROC analysis indicates that sFasL effectively discriminated hypothyroid and healthy children (area under the curve/AUC = 0.897; p < 0,001; sensitivity: 100%, specificity: 73.3%), as well as both clinically opposing states: hyperthyroidism and hypothyroidism among themselves (AUC = 0.833; p= 0,003; sensitivity: 94,7%, specificity: 72.7%).
CONCLUSIONS: Our work shows that sFasL may be useful marker in the assessment of thyroid dysfunction in children with autoimmune thyroid disease.
DESIGN: The group comprised 45 newly diagnosed children with Hashimoto's thyroiditis and Graves' disease versus euthyroid control group: 11 with hypothyroidism (10 girls and 1 boy, aged 12.2 ± 1.9 years), 19 children with hyperthyroidism (15 girls and 4 boys, aged 12.4 ± 4.9 years) and 15 healthy subjects (7 girls and 8 boys, aged 10.5 ± 4.8 years).
METHODS: Thyroid function (TSH, fT4, fT3), autoimmune (ATG, ATPO, TRAb) and anthropometric (weight, height, BMI, BMI-SDS, Cole index) parameters were evaluated. sFasL concentration was measured by ELISA. Nonparametric statistical test and ROC analysis were performed to assess the data.
RESULTS: We found no significant differences in serum concentrations of sFasL between boys and girls in the studied groups. Significantly higher sFasL levels (median 0.26 ng/ml) were identified in children with hypothyroidism compared with the control group (median 0.06 ng/ml, p < 0.001) and in comparison to a group of children with hyperthyroidism (median 0.14 ng/ml, p < 0.05). ROC analysis indicates that sFasL effectively discriminated hypothyroid and healthy children (area under the curve/AUC = 0.897; p < 0,001; sensitivity: 100%, specificity: 73.3%), as well as both clinically opposing states: hyperthyroidism and hypothyroidism among themselves (AUC = 0.833; p= 0,003; sensitivity: 94,7%, specificity: 72.7%).
CONCLUSIONS: Our work shows that sFasL may be useful marker in the assessment of thyroid dysfunction in children with autoimmune thyroid disease.
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