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Thyroid Antibody Status, Subclinical Hypothyroidism, and the Risk of Coronary Heart Disease: An Individual Participant Data Analysis

Identifieur interne : 000B74 ( Main/Exploration ); précédent : 000B73; suivant : 000B75

Thyroid Antibody Status, Subclinical Hypothyroidism, and the Risk of Coronary Heart Disease: An Individual Participant Data Analysis

Auteurs : Tinh-Hai Collet ; Douglas C. Bauer ; Anne R. Cappola ; Bj Rn O. Svold ; Stefan Weiler ; Eric Vittinghoff ; Jacobijn Gussekloo ; Alexandra Bremner ; Wendy P. J. Den Elzen ; Rui M. B. Maciel ; Mark P. J. Vanderpump ; Jacques Cornuz ; Marcus Dörr ; Henri Wallaschofski ; Anne B. Newman ; José A. Sgarbi ; Salman Razvi ; Henry Völzke ; John P. Walsh ; Drahomir Aujesky ; Nicolas Rodondi

Source :

RBID : PMC:4154087

Abstract

Context:

Subclinical hypothyroidism has been associated with increased risk of coronary heart disease (CHD), particularly with thyrotropin levels of 10.0 mIU/L or greater. The measurement of thyroid antibodies helps predict the progression to overt hypothyroidism, but it is unclear whether thyroid autoimmunity independently affects CHD risk.

Objective:

The objective of the study was to compare the CHD risk of subclinical hypothyroidism with and without thyroid peroxidase antibodies (TPOAbs).

Data Sources and Study Selection:

A MEDLINE and EMBASE search from 1950 to 2011 was conducted for prospective cohorts, reporting baseline thyroid function, antibodies, and CHD outcomes.

Data Extraction:

Individual data of 38 274 participants from six cohorts for CHD mortality followed up for 460 333 person-years and 33 394 participants from four cohorts for CHD events.

Data Synthesis:

Among 38 274 adults (median age 55 y, 63% women), 1691 (4.4%) had subclinical hypothyroidism, of whom 775 (45.8%) had positive TPOAbs. During follow-up, 1436 participants died of CHD and 3285 had CHD events. Compared with euthyroid individuals, age- and gender-adjusted risks of CHD mortality in subclinical hypothyroidism were similar among individuals with and without TPOAbs [hazard ratio (HR) 1.15, 95% confidence interval (CI) 0.87–1.53 vs HR 1.26, CI 1.01–1.58, P for interaction = .62], as were risks of CHD events (HR 1.16, CI 0.87–1.56 vs HR 1.26, CI 1.02–1.56, P for interaction = .65). Risks of CHD mortality and events increased with higher thyrotropin, but within each stratum, risks did not differ by TPOAb status.

Conclusions:

CHD risk associated with subclinical hypothyroidism did not differ by TPOAb status, suggesting that biomarkers of thyroid autoimmunity do not add independent prognostic information for CHD outcomes.


Url:
DOI: 10.1210/jc.2014-1250
PubMed: 24915118
PubMed Central: 4154087


Affiliations:


Links toward previous steps (curation, corpus...)


Le document en format XML

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<sec>
<title>Context:</title>
<p>Subclinical hypothyroidism has been associated with increased risk of coronary heart disease (CHD), particularly with thyrotropin levels of 10.0 mIU/L or greater. The measurement of thyroid antibodies helps predict the progression to overt hypothyroidism, but it is unclear whether thyroid autoimmunity independently affects CHD risk.</p>
</sec>
<sec>
<title>Objective:</title>
<p>The objective of the study was to compare the CHD risk of subclinical hypothyroidism with and without thyroid peroxidase antibodies (TPOAbs).</p>
</sec>
<sec>
<title>Data Sources and Study Selection:</title>
<p>A MEDLINE and EMBASE search from 1950 to 2011 was conducted for prospective cohorts, reporting baseline thyroid function, antibodies, and CHD outcomes.</p>
</sec>
<sec>
<title>Data Extraction:</title>
<p>Individual data of 38 274 participants from six cohorts for CHD mortality followed up for 460 333 person-years and 33 394 participants from four cohorts for CHD events.</p>
</sec>
<sec>
<title>Data Synthesis:</title>
<p>Among 38 274 adults (median age 55 y, 63% women), 1691 (4.4%) had subclinical hypothyroidism, of whom 775 (45.8%) had positive TPOAbs. During follow-up, 1436 participants died of CHD and 3285 had CHD events. Compared with euthyroid individuals, age- and gender-adjusted risks of CHD mortality in subclinical hypothyroidism were similar among individuals with and without TPOAbs [hazard ratio (HR) 1.15, 95% confidence interval (CI) 0.87–1.53 vs HR 1.26, CI 1.01–1.58,
<italic>P</italic>
for interaction = .62], as were risks of CHD events (HR 1.16, CI 0.87–1.56 vs HR 1.26, CI 1.02–1.56,
<italic>P</italic>
for interaction = .65). Risks of CHD mortality and events increased with higher thyrotropin, but within each stratum, risks did not differ by TPOAb status.</p>
</sec>
<sec>
<title>Conclusions:</title>
<p>CHD risk associated with subclinical hypothyroidism did not differ by TPOAb status, suggesting that biomarkers of thyroid autoimmunity do not add independent prognostic information for CHD outcomes.</p>
</sec>
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</front>
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<name sortKey="Aujesky, Drahomir" sort="Aujesky, Drahomir" uniqKey="Aujesky D" first="Drahomir" last="Aujesky">Drahomir Aujesky</name>
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<name sortKey="Den Elzen, Wendy P J" sort="Den Elzen, Wendy P J" uniqKey="Den Elzen W" first="Wendy P. J." last="Den Elzen">Wendy P. J. Den Elzen</name>
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<name sortKey="Gussekloo, Jacobijn" sort="Gussekloo, Jacobijn" uniqKey="Gussekloo J" first="Jacobijn" last="Gussekloo">Jacobijn Gussekloo</name>
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<name sortKey="Sgarbi, Jose A" sort="Sgarbi, Jose A" uniqKey="Sgarbi J" first="José A." last="Sgarbi">José A. Sgarbi</name>
<name sortKey="Vanderpump, Mark P J" sort="Vanderpump, Mark P J" uniqKey="Vanderpump M" first="Mark P. J." last="Vanderpump">Mark P. J. Vanderpump</name>
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<name sortKey="Volzke, Henry" sort="Volzke, Henry" uniqKey="Volzke H" first="Henry" last="Völzke">Henry Völzke</name>
<name sortKey="Wallaschofski, Henri" sort="Wallaschofski, Henri" uniqKey="Wallaschofski H" first="Henri" last="Wallaschofski">Henri Wallaschofski</name>
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