Publications by authors named "Suleyman S Koca"

Background: Idiopathic granulomatous mastitis (IGM) is a chronic inflammatory disorder characterised by the formation of non-caseating granulomas in breast tissue, primarily affecting young women of childbearing age. The aetiology of IGM remains unclear, with potential factors including trauma, hormonal influences, and autoimmune responses. Recent studies suggest that immune dysregulation may play a critical role in IGM, highlighting the need for exploration of biomarkers involved in inflammation and immune modulation, particularly LL-37, galectin-3, IL-36, and TLR3.

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CT-P13 is a biosimilar version of infliximab, a monoclonal antibody. In individuals with ankylosing spondylitis (AS), CT-P13 has been shown to be effective and to have a well-tolerated safety profile. The aim of this study was to evaluate the long-term drug persistence, safety, and efficacy of infliximab biosimilar CT-P13 in patients with AS undergoing first-line (1st-line) and later (≥2nd-line) treatment in clinical practice.

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: Secukinumab is a monoclonal antibody against interleukin 17 approved for patients with axial spondyloarthritis (axSpA), psoriatic arthritis (PsA), and psoriasis. Treating axSpA and PsA patients with a history of malignancy is a challenge. While initial results on the applicability of secukinumab in this patient group are positive, the number of studies on this topic remains limited.

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Article Synopsis
  • Inflammatory low back pain (IBP) is commonly associated with spondylarthritis (SpA) but can also be a symptom of various malignancies, both hematologic and solid tumors.
  • A study analyzed 34 patients diagnosed with malignancy-related IBP over the past decade, comparing their clinical features to a control group of patients with axial SpA.
  • Findings revealed that malignancy-related IBP patients had higher levels of inflammatory markers and a similar ratio of hematologic to solid tumors, suggesting that malignancies should be considered in differential diagnoses of IBP.
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Clinical data on the use of tumour necrosis factor inhibitors (TNFi) in late-onset ankylosing spondylitis (LoAS) are limited. The present study aimed to evaluate efficacy, safety, and treatment adherence associated with the initial use of TNFi therapy in biologic naive patients diagnosed with LoAS. Patients whose age of onset was ≥ 45 years and < 45 years were classified as having LoAS and YoAS, respectively, based on the age of symptom onset.

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Background/aim: Adipose tissue produces several inflammatory mediators. Thus, obesity affects the disease course and the responses to the antirheumatic agents in inflammatory diseases. The aim of the study was to determine whether the body mass index (BMI) is involved in the response to rituximab in rheumatoid arthritis (RA).

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Background/aim: The objective of this study is to evaluate the clinical presentations and adverse outcomes of Coronavirus Disease 2019 (COVID-19) in patients with systemic sclerosis (SSc) and assess the impact of SSc features on the clinical course of COVID-19.

Materials And Methods: In this multicenter, retrospective study, SSc patients with COVID-19 were included. Clinical features of SSc, along with detailed COVID-19 data, were extracted from medical records and patient interviews.

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Objective: In this study, our objective was to present real-life data on the incidence of inflammatory bowel disease (IBD) among patients receiving secukinumab treatment.

Methods: The study consisted of 209 patients who had prior exposure to anti-tumor necrosis factor (TNF) or were biologically naive. Patients with a pre-existing history of IBD were excluded from the study.

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Background/aim: To investigate the frequency and clinical relevance of an extended autoantibody profile in patients with systemic sclerosis (SSc).

Materials And Methods: In this cross-sectional study, serum from 100 consecutive patients was subjected to indirect immunofluorescence (IIF) (HEp-20-10/primate liver mosaic) and Systemic Sclerosis Profile by EUROIMMUN to evaluate anti-nuclear antibodies (ANA) and autoantibodies against 13 different autoantibodies in patients with SSc less than 3 years.

Results: Ninety-three of 100 patients were positive for ANA by IIF.

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Article Synopsis
  • In a clinical trial, patients with rheumatoid arthritis using the Janus kinase inhibitor tofacitinib experienced higher rates of adverse events compared to those on TNF inhibitors like adalimumab or etanercept.
  • A study aimed to analyze treatment discontinuations due to adverse events among JAK inhibitors, TNF inhibitors, and other biological therapies in a real-world setting involving over 46,000 treatment courses.
  • Results indicated that the rate of treatment discontinuation was similar for TNF inhibitors and JAK inhibitors overall, but certain JAK inhibitors showed different patterns, especially with older patients and specific cardiovascular risk factors, warranting cautious interpretation of the findings.
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  • This study evaluated the presence of hepatitis B (HBV) and C (HCV) in patients with rheumatoid arthritis (RA) and spondyloarthritis (SpA) undergoing biological treatments, using data from a registry in Türkiye.
  • The findings revealed high screening rates for HBV (97% in RA and 94.2% in SpA), with varying rates of positive test results for HBV and HCV; older patients with comorbidities were more likely to test positive for HBV.
  • The most commonly prescribed biologic treatments included adalimumab and etanercept, with one reported case of HBV reactivation in a patient treated with rituximab and preventative medicine.
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Background: To investigate the impact of smoking on disease activity, treatment retention, and response in patients with ankylosing spondylitis (AS) treated with their first tumor necrosis factor-α inhibitor (TNFi).

Methods: AS patients who started their first TNFi treatment for the active axial disease (BASDAI ≥ 4) from TURKBIO Registry were included. Treatment response of smoker (current and ex-smokers) and nonsmoker (never smoker) patients were primarily evaluated as achievement of BASDAI50 or improvement in BASDAI at least 20 mm at 3 months and 6 months compared to baseline.

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Objective: To determine the rate of unintentional monotherapy (UM; switching to monotherapy from combination therapy of patients' own volition) in rheumatoid arthritis patients receiving tofacitinib and to evaluate tofacitinib survival rate.

Methods: This national, multicenter study included patients' data from the TURKBIO Registry. Demographics, clinical characteristics, disease duration and activity, comorbidities, and treatments were analyzed.

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Objectives: The study aimed to investigate the variation of brain-derived neurotrophic factor (BDNF) levels following acute exercise in patients with rheumatoid arthritis (RA).

Patients And Methods: This cross-sectional study was conducted with 88 participants (25 males, 63 females; mean age: 45.1±8.

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Article Synopsis
  • The study looked at how well a medication called tocilizumab (TCZ) works for people with rheumatoid arthritis (RA) who didn't respond well to other treatments.
  • Researchers collected data from 258 patients using a special online registry in Turkey to track their health and any side effects.
  • TCZ showed good results, with over 80% of patients still using it after a year, and it helped reduce their disease symptoms safely.
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Objectives: Digital ulcers (DUs) are associated with a significant burden in systemic sclerosis (SSc) by leading to severe pain, physical disability, and reduced quality of life. This effort aimed to develop recommendations of the Turkish Society for Rheumatology (TRD) on the management of DUs associated with SSc.

Methods: In the first meeting held in December 2020 with the participation of a task force consisting of 23 rheumatologists the scope of the recommendations and research questions were determined.

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Objectives: The aim of this study was to evaluate the impact of obesity on the treatment response to secukinumab and drug survival rate in patients with ankylosing spondylitis (AS).

Methods: We performed an observational cohort study that included AS patients based on the biological drug database in Turkey (TURKBIO) Registry between 2018 and 2021. The patients were divided into three groups: normal [body mass index (BMI) < 25 kg/m2], overweight (BMI: 25-30 kg/m2), and obese (BMI ≥ 30 kg/m2).

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Objective: The coronavirus disease 2019 pandemic has been resulting in increased hospital occupancy rates. Rheumatic patients cannot still reach to hospitals, or they hesitate about going to a hospital even they are able to reach. We aimed to show the effect of the first wave of coronavirus disease 2019 pandemic on the treatment of biological disease-modifying anti-rheumatic drugs in patients with rheumatoid arthritis or spondyloarthritis.

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Tocilizumab (TCZ) is a recombinant humanized monoclonal antibody that targets the IL-6 receptor. TCZ found to be efficacious and has a good tolerated safety profile in rheumatoid arthritis (RA) patients. The aim of this study was to describe the disease activity and retention rate in Turkish RA patients who were prescribed TCZ as first-line biologic treatment in a real-world setting.

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Objectives: This study aims to define serum levels of netrin-1 and netrin receptors in patients with fibromyalgia (FM) and osteoarthritis (OA).

Patients And Methods: This cross-sectional study was conducted with a total of 150 female participants (mean age: 47.2±16.

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Objective: TURKBIO registry, established in 2011, is the first nationwide biological database in Turkey. This study aimed to provide an overview of TURKBIO data collected by June 2018.

Methods: The registry included adult patients with rheumatoid arthritis (RA), ankylosing spondylitis (AS), nonradiographic axial spondyloarthritis (nr-AxSpA), and psoriatic arthritis (PsA).

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This study aimed to compare Tuberculin Skin Test (TST) and QuantiFERON®-TB Gold In-Tube (QFT-GIT) test in rheumatoid arthritis (RA) and spondyloarthritis (SpA) patients scheduled for biological and targeted synthetic disease modifying anti-rheumatic drugs (DMARDs) in a Bacillus Calmette-Guérin-vaccinated population. Adult RA (n = 206) and SpA (n = 392) patients from the TReasure database who had both TST and QFT-GIT prior to initiation of biological and targeted synthetic DMARDs were included in the study. Demographic and disease characteristics along with pre-biologic DMARD and steroid use were recorded.

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Background: Rheumatoid arthritis (RA) is a chronic inflammatory joint disease that causes cartilage and bone damage as well as disability.  AIMS : The aim of this study was to examine the effects of acute aerobic exercise on cytokines such as serum interleukin-6 (IL-6), interleukin-1β (IL-1β), Tumor Necrosis Factor-α (TNF-α) and irisin, vascular endothelial growth factor(VEGF) and klotho in RA patients.  METHODS: Forty RA patient and 40 healthy volunteers of the same age participated in this study.

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Janus kinase (JAK)-signal transducer and activator of transcription (STAT) pathway is important in the process of inflammation and fibrosis. The adenosine 5'-monophosphate-activated protein kinase (AMPK) enzyme can affect JAK/STAT pathway. Tofacitinib is a pan-JAK inhibitör.

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