Rıdvan Mercan

ORCID: 0000-0003-1537-2192
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Research Areas
  • Spondyloarthritis Studies and Treatments
  • Rheumatoid Arthritis Research and Therapies
  • Autoimmune and Inflammatory Disorders Research
  • Inflammasome and immune disorders
  • Systemic Lupus Erythematosus Research
  • Ocular Diseases and Behçet’s Syndrome
  • Infectious Diseases and Tuberculosis
  • Psoriasis: Treatment and Pathogenesis
  • Vasculitis and related conditions
  • Systemic Sclerosis and Related Diseases
  • Biosimilars and Bioanalytical Methods
  • Bone and Joint Diseases
  • Salivary Gland Disorders and Functions
  • Sarcoidosis and Beryllium Toxicity Research
  • IL-33, ST2, and ILC Pathways
  • Gout, Hyperuricemia, Uric Acid
  • Parathyroid Disorders and Treatments
  • Tuberculosis Research and Epidemiology
  • Pharmaceutical studies and practices
  • Dermatology and Skin Diseases
  • Amyloidosis: Diagnosis, Treatment, Outcomes
  • Circular RNAs in diseases
  • Microscopic Colitis
  • Liver Diseases and Immunity
  • Peripheral Neuropathies and Disorders

Namık Kemal University
2019-2025

Gazi University
2011-2024

Hacettepe University
2021

Ankara Yıldırım Beyazıt University
2021

Center for Rheumatology
2013-2021

Ankara Onkoloji Eğitim ve Araştırma Hastanesi
2020

Sağlık Bilimleri Üniversitesi
2020

Ankara University
2014

Elevated neutrophil count is associated with poor prognosis and increased mortality in many conditions. Neutrophil to lymphocyte ratio (NLR) has emerged as a marker of inflammation neoplastic cardiovascular disorders. Herein, we investigated utility this simple tool rheumatoid arthritis (RA) ankylosing spondylitis (AS).The study consisted 136 RA 140 AS patients, along 117 healthy control subjects. activities were determined Disease Activity Score (DAS) Bath Ankylosing Spondylitis indices...

10.1002/jcla.21908 article EN Journal of Clinical Laboratory Analysis 2015-12-14

Objectives: This study aimed to examine the frequency and associated factors of extra-musculoskeletal manifestations (EMMs) peripheral in an axial spondyloarthritis (axSpA) cohort their impact on choice first biologic treatment. Patients methods: A total 1,687 patients with axSpA (978 males, 709 females; mean age: 38.5±11 years) who started disease modifying antirheumatic drug (bDMARD) were included from a national prospective database TReasure between its inception 2018-2021. Demographic...

10.46497/archrheumatol.2025.10670 article EN Archives of Rheumatology 2025-03-01

Thrombocytosis is a condition that often detected incidentally and can be seen both in the course of myeloproliferative diseases (MPD) as reactive condition. Ankylosing spondylitis (AS) chronic multisystemic inflammatory disease mainly affects spine. Mild to moderate thrombocytosis may occur secondary AS. In treatment AS, tumor necrosis factor inhibitor (anti-TNF) treatments are actively used first-line therapy. The number cases MPDs occurring AS reported literature limited. Although exact...

10.7197/cmj.1612981 article EN Cumhuriyet Tıp Dergisi/Cumhuriyet Üniversitesi Tıp Fakültesi dergisi 2025-03-29

Abstract Objectives Paraneoplastic arthritis ( PA ) may mimic rheumatic diseases. While presenting the demographic and laboratory features of patients diagnosed with , this study also aims to provide possible appropriate tools differentiate cases from early rheumatoid ERA ). Methods Sixty‐five (male/female: 43/22) 15 different rheumatology clinics 50 consecutive 13/37) fulfilling 2010 American College Rheumatology ACR criteria for diagnosis if RA Gaziantep Early Arthritis Trial GREAT as...

10.1111/1756-185x.12277 article EN International Journal of Rheumatic Diseases 2014-01-17

In the case of high erythrocyte sedimentation rate (ESR) and C-reactive protein (CRP) levels, diagnosis underlying disease can be challenging especially in serologically unrevealing patients who have nonspecific clinical findings. We aimed to investigate final distribution definitive diagnoses initially presented with findings sustained elevations serum ESR/CRP levels.The medical records hospitalized a rheumatology clinic between January 2010 2011 were retrospectively analyzed. The...

10.5152/eurjrheum.2015.0113 article EN cc-by-nc European Journal of Rheumatology 2015-04-15

Journal Article Rapid resolution of protracted febrile myalgia syndrome with anakinra: Report two cases Get access Rıdvan Mercan, Mercan Department Internal Medicine, Division Rheumatology, Gazi University Hospital, Ankara, Turkey Search for other works by this author on: Oxford Academic Google Scholar Aynur Turan, Turan Radiology, Yildirim Beyazit Training and Research Etlik, Berivan Bitik, Bitik Abdurrahman Tufan, Tufan Correspondence to: MD, Universitesi Hastanesi, Ic Hastalıkları ABD,...

10.3109/14397595.2014.882221 article EN Modern Rheumatology 2014-02-18

Abstract Aim Cognitive dysfunction is a neurologic manifestation in primary Sjögren syndrome ( PSS ). On the other hand, several antibodies are related to cognitive dysfunction. The aim of this study assess patients via detailed tests. Moreover, its associations with were also evaluated. Method Twenty‐eight female and 17 healthy controls comprised groups. Short‐term memory, long‐term verbal learning, visual spatial perception, attention, frequency function, executive functions information...

10.1111/1756-185x.12912 article EN International Journal of Rheumatic Diseases 2016-07-25

Background. Systemic amyloidosis is a potentially fatal condition, unless diagnosed and treated before development of irreversible organ damage. Demonstration amyloid deposits within tissue biopsies only definitive diagnostic method, which makes appropriate selection biopsy site essential. Herein, we evaluated efficacy minimally invasive minor salivary gland (MSGB) for the diagnosis amyloidosis. Methods. We analyzed 37 taken from 35 patients. Suggestive findings were significant proteinuria,...

10.1155/2014/354648 article EN ISRN Rheumatology 2014-02-23

ABSTRACT The incidence of tuberculosis in developed countries has decreased over the years due to use effective drugs and improvements socio-economic conditions. However, with ease global transport increased travel high prevalence, reduction extrapulmonary cases been less significant compared overall decrease cases. Extrapulmonary can manifest a variety ways. Tuberculous dactylitis, rare form tuberculous osteomyelitis, was first described by Rankin 1886. It mainly affects short tubular bones...

10.1093/mrcr/rxae003 article EN Modern Rheumatology Case Reports 2024-01-16

Giriş: Eklem hipermobilitesi, sık görülen bir fiziksel özelliktir. Benign eklem hipermobilite sendromu (BEHS) tek başına olabileceği gibi, müsküloskeletal ağrı ile birlikte veya kompleks fenotiplerin parçası olarak görülebilmektedir. Romatizmal hastalıklarda laksiteleri yıllar içerisinde bazı çalışmalarda araştırılmıştır. Lupus tanılı hastaların vücut yapılarında değişiklikler konusunda literatürde çalışmalar bulunmaktadır. Beighton skoru, lupus sürecinde manifestasyonlardan etkilenmez ancak...

10.48176/esmj.2024.154 article TR cc-by-nc-nd Eskisehir Medical Journal Eskisehir City Hospital 2024-03-28

Some case reports indicated that red cell status increased after hepatitis C viral infection. The aim of study was to define the influence infection (HCV) on in hemodialyzed patients.A total 49 (21 anti-HCV-positive and 28 anti-HCV-negative) patients with ESRD were included this study. Exclusion criteria blood transfusion massive loss last 6 months preceding None used any drug containing aluminum.The prevalence anti-HCV antibody 42.8%. Mean age 51.6 +/- 14.3 (+) group 50.4 17.0 (-) group....

10.5414/cnp60401 article EN Clinical Nephrology 2003-12-01
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