Abstract
Background
Rheumatoid arthritis (RA) is the most common chronic inflammatory disorder and is associated with progressive destruction of synovial joints and physical disability. Therapies with known benefits include disease-modifying antirheumatic drugs (DMARDs), such as methotrexate, as well as more recent biologic agents, such as tumor necrosis factor inhibitors (anti-TNF therapy).
Method
This was a retrospective study, which included 205 RA and 112 early RA (ERA) patients from the Rheumatology Clinic at Gaziantep University School of Medicine Research Center as well as 104 healthy controls.
Results
The mean neutrophil to lymphocyte ratio (NLR) was found to be 3.15 ± 2.64 in the patient group and 2.03 ± 0.94 in the control group. The mean platelet to lymphocyte ratio (PLR) was 162.39 ± 107.76 in the patient group and 131.23 ± 48.09 in the control group. There was a significant difference in both the NLR and PLR between the patient and control groups (both p < 0.01). There was a significant difference in both the NLR and PLR between patients with active disease and remission (both p < 0.001) in RA, including anti-TNF therapy and DMARDs groups. There was a significant difference in NLR (p = 0.001) but not in PLR (p = 0.051) between active disease and remission in ERA.
Conclusion
The results of the present study suggest that the NLR may be considered a useful marker of disease activity in RA and one that can aid the diagnosis of ERA. The PLR can be used in the assessment of disease activity in RA patients undergoing anti-TNF therapy but is not suitable for diagnosing ERA.
Zusammenfassung
Hintergrund
Rheumatoide Arthritis (RA) stellt die häufigste chronisch-entzündliche Erkrankung dar und ist mit einer fortschreitenden Zerstörung der Synovialgelenke und körperlicher Behinderung assoziiert. Therapien mit bekanntem Nutzen sind krankheitsmodifizierende antirheumatische Medikamente (DMARDs), wie z. B. Methotrexat, sowie neuere biologische Wirkstoffe, wie Tumornekrosefaktorinhibitoren (Anti-TNF-Therapie).
Methode
Es handelte sich um eine retrospektive Studie, in die 205 RA-Patienten und 112 Patienten mit früher RA (ERA) aus dem Forschungszentrum der Rheumatologischen Klinik der Gaziantep University School of Medicine sowie 104 gesunde Kontrollpersonen eingeschlossen wurden.
Ergebnisse
Das mittlere Neutrophilen-Lymphozyten-Verhältnis (NLR) betrug 3,15 ± 2,64 in der Patientengruppe und 2,03 ± 0,94 in der Kontrollgruppe. Das mittlere Thrombozyten-Lymphozyten-Verhältnis (PLR) lag bei 162,39 ± 107,76 in der Patientengruppe und bei 131,23 ± 48,09 in der Kontrollgruppe. Sowohl für NLR als auch für PLR gab es einen signifikanten Unterschied zwischen der Patienten- und der Kontrollgruppe (beide p-Werte < 0,01). Es gab einen signifikanten Unterschied sowohl für NLR als auch für PLR zwischen RA-Patienten mit aktiver Krankheit und RA-Patienten in Remission (beide p-Werte < 0,001), einschließlich der Gruppen, die eine Anti-TNF-Therapie und DMARDs erhielten. Einen signifikanten Unterschied für NLR (p = 0,001), aber nicht für PLR (p = 0,051) gab es zwischen ERA-Patienten mit aktiver Krankheit und ERA-Patienten in Remission.
Schlussfolgerung
Die Ergebnisse der vorliegenden Studie zeigen, dass NLR als ein nützlicher Marker für die Krankheitsaktivität bei RA und als Hilfe für die Diagnose einer ERA betrachtet werden kann. PLR kann bei der Untersuchung der Krankheitsaktivität bei RA-Patienten, die eine Anti-TNF-Therapie erhalten, verwendet werden, ist jedoch für die Diagnose einer ERA nicht geeignet.
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O. Zengin, M. E. Onder, A. Kalem, M. Bilici, I. H. Türkbeyler, Z. A. Ozturk, B. Kisacik and A. M. Onat state that they have no conflict of interests.
All studies on humans described in this manuscript were carried out with the approval of the responsible ethics committee and in accordance with national law and the Helsinki Declaration of 1975 (in its current revised form). Informed consent was obtained from all participants in the study.
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U. Lange, Bad Nauheim
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Zengin, O., Onder, M.E., Kalem, A. et al. New inflammatory markers in early rheumatoid arthritis. Z Rheumatol 77, 144–150 (2018). https://doi.org/10.1007/s00393-016-0187-y
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DOI: https://doi.org/10.1007/s00393-016-0187-y