Cardiovascular risk in chronic autoimmune thyroiditis and subclinical hypothyroidism patients. A cluster analysis

Giovanni Carbotta, Francesco Tartaglia, Alessandro Giuliani, Sabino Carbotta, Luciana Tromba, Ilaria Jacomelli, Livia De Anna, Angela Fumarola

Research output: Contribution to journalArticle

Abstract

Background Subclinical hypothyroidism (SCH) and chronic autoimmune thyroiditis (CAT) are linked to an increased risk of atherosclerosis and coronary heart disease (CHD). The aim of this study was to look for positive markers of CHD and correlations with thyroid blood tests in patients with SCH or CAT, but no symptoms of CHD, so as to identify CHD risk conditions that otherwise would likely be missed. Methods We measured a series of thyroid, clinical-metabolic and cardiovascular parameters in 30 consecutive endocrinology patients enrolled in our ambulatory endocrinological referral center of “Sapienza” University of Rome. (19 with CAT, 11 with SCH) from January 2015 to March 2015. 13 asymptomatic subjects were enrolled as controls. In each patient, we measured a series of 34 thyroid, clinical-metabolic and cardiovascular parameters. Results in the statistical analysis of collected data, the oblique principal components clustering procedure (OPC) revealed the presence of an interesting mixed cluster, composed of a thyroid parameter (TPO-Ab), a metabolic parameter (homocysteine level) and a cardiovascular parameter (MAPSE), in which we assessed the relationships between the single components. Our preliminary results indicate that in both groups of patients elevated TPO-Ab, when accompanied by reduced MAPSE and increased IMT and homocysteine values, may be taken to indicate the presence of clinically unrecognized CHD. Conclusions Confirmation of these results in larger series of patients could justify hormone therapy for prevention of CHD in these thyroid patients versus placebo treatment.

Original languageEnglish
Pages (from-to)115-119
Number of pages5
JournalInternational Journal of Cardiology
Volume230
DOIs
Publication statusPublished - Mar 1 2017

Keywords

  • Cardiovascular risk
  • Chronic autoimmune thyroiditis
  • Echo-color Doppler
  • L-Thyroxine therapy
  • Subclinical hypothyroidism

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

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