The Effect of Chloroquine on Pro-Inflammatory Cytokines Levels in Graves’ Disease: Historical Cohort from a Pilot Randomized Controlled Trial

Hadi Moattar, Hamideh Moosapour, Akbar Soltani, Bagher Larijani

Endocrinology and Metabolism Research Centre, Tehran University of Medical Sciences, Tehran, Iran.

DOI: 10.4236/pp.2013.44056                

Abstract

Objectives: Analyzing the trend in the serum inflammatory cytokines levels in a historical cohort of patients treated with combination of chloroquine and methimazole. Material and methods: We analyzed the pro-inflammatory serum cytokines level [Interleukin-6(IL-6), Tumor Necrosis Factor alpha (TNF-α), Interleukin 1 alpha (IL-1 α) and Interferon gamma (INF-γ)] in the stored blood samples of 22 patients with Graves’ disease who previously randomized to receive either chloroquine and methimazole combination therapy or methimazole monotherapy. Total T3, T4 and TSH levels were measured by an enzyme linked immunosorbent assay (ELISA) method (DRG, New York, USA) and the result was published previously. In this study we used an ELISA method (Bender Medsystem Vienna Austria) to measure serum pro-inflammatory cytokines in the first 6 months of trial. Results: No significant differences in serum cytokines concentration were observed between the two treatment groups (p > 0.05). Although it was not statistically significant, serum INF-gamma concentration tended to be lower in the chloroquine group after four months of therapy (p = 0.12). Conclusion: In this study we found changes in the serum thyroid hormones level did not accompany concomitant changes in the serum cytokines levels in two treatment groups. Therefore it is possible that chloroquine reduce serum thyroid hormones levels independent of its immunomodulatory effect.

Keywords

Chloroquine; Cytokines; Graves’ Disease; Randomized Controlled Trial; Interleukin-1; Interleukin-6; Interleukin-1 Alpha; Tumor Necrosis Factor-Alpha; Interferon Gamma

Conflicts of Interest

The authors declare no conflicts of interest.

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