Pathobiochemical Mechanisms Relating Iron Homeostasis to Parameters of Inflammatory Activity and Autoimmune Disorders in Rheumatoid Arthritis.

Autor:	Stefanova KI; Department of Chemistry and Biochemistry, Faculty of Pharmacy, Medical University of Plovdiv, Plovdiv, Bulgaria, Delcheva GT; Department of Chemistry and Biochemistry, Faculty of Pharmacy, Medical University of Plovdiv, Plovdiv, Bulgaria, Maneva AI; Department of Chemistry and Biochemistry, Faculty of Pharmacy, Medical University of Plovdiv, Plovdiv, Bulgaria, Batalov AZ; Department of Propaedeutics of Internal Diseases, Faculty of Medicine, Medical University of Plovdiv, Plovdiv, Bulgaria, Geneva-Popova MG; Department of Propaedeutics of Internal Diseases, Faculty of Medicine, Medical University of Plovdiv, Plovdiv, Bulgaria, Karalilova RV; Department of Propaedeutics of Internal Diseases, Faculty of Medicine, Medical University of Plovdiv, Plovdiv, Bulgaria, Simitchiev KK; Department of Analytical Chemistry and Computer Chemistry, Faculty of Chemistry, Paisii Hilendarski University of Plovdiv, Plovdiv, Bulgaria
Jazyk:	angličtina
Zdroj:	Folia medica [Folia Med (Plovdiv)] 2016 Dec 01; Vol. 58 (4), pp. 257-263.
DOI:	10.1515/folmed-2016-0040
Abstrakt:	Aim: To find the correlations between the parameters of iron homeostasis, inflammatory activity and autoimmune disorders in rheumatoid arthritis (RA). Materials and Methods: The present study included 114 patients with RA and 42 healthy controls. We determined the parameters of iron homeostasis: serum iron, total iron binding capacity (TIBC), ferritin and soluble transferrin receptor (sTfR), the parameters of inflammatory activity: C-reactive protein (CRP), interleukin-6 (IL-6) and prohepcidin, and the parameters of autoimmune disorders: rheumatoid factor (RF), anti-cyclic citrullinated peptide (antiCCP) antibodies, and DAS 28. Results: The levels of sTfR, CRP, IL-6 and prohepcidin were significantly higher in RA patients than those in the controls and the level of serum iron was significantly lower in RA than that in the control group. Unlike the controls, in RA, there was a significant positive correlation of sTfR with the parameters of inflammatory activity (IL-6, prohepcidin, ESR) and with the parameters of autoimmune disorders (DAS 28, RF, antiCCP). A negative correlation of serum iron with sTfR was found only in RA patients. Prohepcidin positively correlated with the parameters of inflammation (CRP, ESR) and with the parameters for evaluation of autoimmune disorders (DAS 28 and RF) in the RA group. Conclusion: Our study shows that the simultaneous determination of the two parameters sTfR and prohepcidin is most informative in evaluating the changes in iron homeostasis in RA. The increase of both parameters provides information for tissue iron deficiency (assessed by the level of sTfR), caused by the inflammation when prohepcidin is expressed.
Databáze:	MEDLINE
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