Prevalence of thyroid autoantibodies in patients with systematic autoimmune rheumatic diseases. Cross-sectional study

ABSTRACT BACKGROUND: Thyroid autoimmunity is more common in patients with rheumatic diseases than in healthy populations. The degree of association seems subject to influence from patients’ geographical location. Here, we aimed to ascertain the prevalence of thyroid autoantibodies in a cohort of p...

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Main Authors: Rayana Taques Posselt, Vinícius Nicolelli Coelho, Danieli Cristina Pigozzo, Marcela Idalia Guerrer, Marília da Cruz Fagundes, Renato Nisihara, Thelma Larocca Skare
Format: Article
Language:English
Published: Associação Paulista de Medicina
Series:São Paulo Medical Journal
Subjects:
Online Access:http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-31802017000600535&lng=en&tlng=en
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author Rayana Taques Posselt
Vinícius Nicolelli Coelho
Danieli Cristina Pigozzo
Marcela Idalia Guerrer
Marília da Cruz Fagundes
Renato Nisihara
Thelma Larocca Skare
author_facet Rayana Taques Posselt
Vinícius Nicolelli Coelho
Danieli Cristina Pigozzo
Marcela Idalia Guerrer
Marília da Cruz Fagundes
Renato Nisihara
Thelma Larocca Skare
author_sort Rayana Taques Posselt
collection DOAJ
description ABSTRACT BACKGROUND: Thyroid autoimmunity is more common in patients with rheumatic diseases than in healthy populations. The degree of association seems subject to influence from patients’ geographical location. Here, we aimed to ascertain the prevalence of thyroid autoantibodies in a cohort of patients with systemic rheumatic disease and the degree of association between its presence and inflammatory activity. DESIGN AND SETTING: Cross-sectional observational study in a rheumatology unit. METHODS: 301 patients with systemic lupus erythematosus (SLE), 210 with rheumatoid arthritis (RA), 58 with scleroderma (SSc) and 80 with spondyloarthritis (SpA) were studied regarding thyroid function (TSH and T4), anti-thyroglobulin (TgAb) and anti-thyroperoxidase (TPOab) and compared with 141 healthy controls. Disease activity in patients with rheumatic disease was assessed through appropriate indexes. RESULTS: There were more antithyroid antibodies in SLE patients with hypothyroidism (P = 0.01; odds ratio, OR 2.7; 95% confidence interval, CI: 1.20-6.26) and in those without hypothyroidism (P = 0.06; OR 2.4; 95% CI: 1.28-4.55) than in controls. SSc patients also showed: P = 0.03 both with antithyroid antibodies and hypothyroidism (OR 3.4; 95% CI: 1.06-10.80) and without hypothyroidism (OR 3.1; 95% CI: 1.11-0.13). RA and SpA patients had the same prevalence as controls (P not significant). Presence of autoantibodies with and without hypothyroidism was not associated with the activity or functional indexes evaluated. CONCLUSION: SLE and SSc were associated with higher prevalence of thyroid autoantibodies in patients with and without hypothyroidism, unlike SpA and RA. There was no link between thyroid autoantibody presence and disease activity or functional impairment.
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spelling doaj.art-dfb759c9148c47a9a243672b4a61b9442022-12-22T02:02:50ZengAssociação Paulista de MedicinaSão Paulo Medical Journal1806-9460135653554010.1590/1516-3180.2017.0089110617S1516-31802017000600535Prevalence of thyroid autoantibodies in patients with systematic autoimmune rheumatic diseases. Cross-sectional studyRayana Taques PosseltVinícius Nicolelli CoelhoDanieli Cristina PigozzoMarcela Idalia GuerrerMarília da Cruz FagundesRenato NisiharaThelma Larocca SkareABSTRACT BACKGROUND: Thyroid autoimmunity is more common in patients with rheumatic diseases than in healthy populations. The degree of association seems subject to influence from patients’ geographical location. Here, we aimed to ascertain the prevalence of thyroid autoantibodies in a cohort of patients with systemic rheumatic disease and the degree of association between its presence and inflammatory activity. DESIGN AND SETTING: Cross-sectional observational study in a rheumatology unit. METHODS: 301 patients with systemic lupus erythematosus (SLE), 210 with rheumatoid arthritis (RA), 58 with scleroderma (SSc) and 80 with spondyloarthritis (SpA) were studied regarding thyroid function (TSH and T4), anti-thyroglobulin (TgAb) and anti-thyroperoxidase (TPOab) and compared with 141 healthy controls. Disease activity in patients with rheumatic disease was assessed through appropriate indexes. RESULTS: There were more antithyroid antibodies in SLE patients with hypothyroidism (P = 0.01; odds ratio, OR 2.7; 95% confidence interval, CI: 1.20-6.26) and in those without hypothyroidism (P = 0.06; OR 2.4; 95% CI: 1.28-4.55) than in controls. SSc patients also showed: P = 0.03 both with antithyroid antibodies and hypothyroidism (OR 3.4; 95% CI: 1.06-10.80) and without hypothyroidism (OR 3.1; 95% CI: 1.11-0.13). RA and SpA patients had the same prevalence as controls (P not significant). Presence of autoantibodies with and without hypothyroidism was not associated with the activity or functional indexes evaluated. CONCLUSION: SLE and SSc were associated with higher prevalence of thyroid autoantibodies in patients with and without hypothyroidism, unlike SpA and RA. There was no link between thyroid autoantibody presence and disease activity or functional impairment.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-31802017000600535&lng=en&tlng=enThyroidAutoimmunityRheumatic disease.
spellingShingle Rayana Taques Posselt
Vinícius Nicolelli Coelho
Danieli Cristina Pigozzo
Marcela Idalia Guerrer
Marília da Cruz Fagundes
Renato Nisihara
Thelma Larocca Skare
Prevalence of thyroid autoantibodies in patients with systematic autoimmune rheumatic diseases. Cross-sectional study
São Paulo Medical Journal
Thyroid
Autoimmunity
Rheumatic disease.
title Prevalence of thyroid autoantibodies in patients with systematic autoimmune rheumatic diseases. Cross-sectional study
title_full Prevalence of thyroid autoantibodies in patients with systematic autoimmune rheumatic diseases. Cross-sectional study
title_fullStr Prevalence of thyroid autoantibodies in patients with systematic autoimmune rheumatic diseases. Cross-sectional study
title_full_unstemmed Prevalence of thyroid autoantibodies in patients with systematic autoimmune rheumatic diseases. Cross-sectional study
title_short Prevalence of thyroid autoantibodies in patients with systematic autoimmune rheumatic diseases. Cross-sectional study
title_sort prevalence of thyroid autoantibodies in patients with systematic autoimmune rheumatic diseases cross sectional study
topic Thyroid
Autoimmunity
Rheumatic disease.
url http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-31802017000600535&lng=en&tlng=en
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AT danielicristinapigozzo prevalenceofthyroidautoantibodiesinpatientswithsystematicautoimmunerheumaticdiseasescrosssectionalstudy
AT marcelaidaliaguerrer prevalenceofthyroidautoantibodiesinpatientswithsystematicautoimmunerheumaticdiseasescrosssectionalstudy
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