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Dive into the research topics where G. Kimyon is active.

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Featured researches published by G. Kimyon.


The Journal of Rheumatology | 2016

Assessment of the New 2012 EULAR/ACR Clinical Classification Criteria for Polymyalgia Rheumatica: A Prospective Multicenter Study

G. Ozen; N. Inanc; Unal Au; Bas S; G. Kimyon; Kisacik B; Ahmet Mesut Onat; Murat S; Keskin H; Can M; Mengi A; Cakir N; Balkarli A; Cobankara; Yilmaz N; Ayten Yazici; Dogru A; Sahin M; Sahin A; Gok K; Senel S; Omer Nuri Pamuk; Sema Yilmaz; Bayindir O; Kenan Aksu; Cagatay Y; Akyol L; Mehmet Sayarlioglu; Yildirim-Cetin G; Yasar-Bilge S

Objective. To assess the performance of the new 2012 provisional European League Against Rheumatism (EULAR)/American College of Rheumatology (ACR) polymyalgia rheumatica (PMR) clinical classification criteria in discriminating PMR from other mimicking conditions compared with the previous 5 diagnostic criteria in a multicenter prospective study. Methods. Patients older than 50 years, presenting with new-onset bilateral shoulder pain with elevated acute-phase reactants (APR), were assessed for the fulfillment of the new and old classification/diagnostic criteria sets for PMR. At the end of the 1-year followup, 133 patients were diagnosed with PMR (expert opinion) and 142 with non-PMR conditions [69 rheumatoid arthritis (RA)]. Discriminating capacity, sensitivity, and specificity of the criteria sets were estimated. Results. Discriminating capacity of the new clinical criteria for PMR from non-PMR conditions and RA as estimated by area under the curve (AUC) were good with AUC of 0.736 and 0.781, respectively. The new criteria had a sensitivity of 89.5% and a specificity of 57.7% when tested against all non-PMR cases. When tested against all RA, seropositive RA, seronegative RA, and non-RA control patients, specificity changed to 66.7%, 100%, 20.7%, and 49.3%, respectively. Except for the Bird criteria, the 4 previous criteria had lower sensitivity and higher specificity (ranging from 83%–93%) compared with the new clinical criteria in discriminating PMR from all other controls. Conclusion. The new 2012 EULAR/ACR clinical classification criteria for PMR is highly sensitive; however, its ability to discriminate PMR from other inflammatory/noninflammatory shoulder conditions, especially from seronegative RA, is not adequate. Imaging and other modifications such as cutoff values for APR might increase the specificity of the criteria.


Journal of Autoimmunity | 2016

Response rate of initial conventional treatments, disease course, and related factors of patients with adult-onset Still's disease: Data from a large multicenter cohort.

Umut Kalyoncu; Dilek Solmaz; Hakan Emmungil; Ayten Yazici; Timuçin Kaşifoğlu; G. Kimyon; Ayse Balkarli; Cemal Bes; Mustafa Ozmen; Fatma Alibaz-Oner; Sukran Erten; Yonca Çağatay; Gözde Yıldırım Çetin; Sedat Yilmaz; Fatih Yildiz; Omer Nuri Pamuk; Orhan Küçükşahin; L. Kilic; Veli Yazisiz; Omer Karadag; Süleyman Serdar Koca; Mutlu Hayran; Servet Akar; Kenan Aksu; Nurullah Akkoc; Gokhan Keser; E. Gonullu; Bunyamin Kisacik; Ahmet Mesut Onat; Mehmet Soy

BACKGROUND Adult-onset Stills disease (AOSD) is a rare condition, and treatment choices are frequently dependent on expert opinions. The objectives of the present study were to assess treatment modalities, disease course, and the factors influencing the outcome of patients with AOSD. METHODS A multicenter study was used to reach sufficient patient numbers. The diagnosis of AOSD was based on the Yamaguchi criteria. The data collected included patient age, gender, age at the time of diagnosis, delay time for the diagnosis, typical AOSD rash, arthralgia, arthritis, myalgia, sore throat, lymphadenopathy, hepatomegaly, splenomegaly, pleuritis, pericarditis, and other rare findings. The laboratory findings of the patients were also recorded. The drugs initiated after the establishment of a diagnosis and the induction of remission with the first treatment was recorded. Disease patterns and related factors were also investigated. A multivariate analysis was performed to assess the factors related to remission. RESULTS The initial data of 356 patients (210 females; 59%) from 19 centers were evaluated. The median age at onset was 32 (16-88) years, and the median follow-up time was 22 months (0-180). Fever (95.8%), arthralgia (94.9%), typical AOSD rash (66.9%), arthritis (64.6%), sore throat (63.5%), and myalgia (52.8%) were the most frequent clinical features. It was found that 254 of the 306 patients (83.0%) displayed remission with the initial treatment, including corticosteroids plus methotrexate with or without other disease-modifying antirheumatic drugs. The multivariate analysis revealed that the male sex, delayed diagnosis of more than 6 months, failure to achieve remission with initial treatment, and arthritis involving wrist/elbow joints were related to the chronic disease course. CONCLUSION Induction of remission with initial treatment was achieved in the majority of AOSD patients. Failure to achieve remission with initial treatment as well as a delayed diagnosis implicated a chronic disease course in AOSD.


Ocular Immunology and Inflammation | 2015

Intravitreal Dexamethasone Implant for Treatment of Refractory Behçet Posterior Uveitis: One-year Follow-up Results.

Erol Coskun; Pelin Çelemler; G. Kimyon; Veysi Öner; Bunyamin Kisacik; Ibrahim Erbagci; Ahmet Mesut Onat

ABSTRACT Purpose: To investigate the results of dexamethasone (DEX) implant in the treatment of eyes with refractory Behçet posterior uveitis. Methods: A total of 17 eyes of 12 patients with active Behçet posterior uveitis were enrolled in the study. A single intravitreal injection of DEX implant was applied to each eye. Best corrected visual acuity (BCVA), central macular thickness (CMT), vitreous haze score, and intraocular pressure (IOP) were determined, at baseline and control visits of months 1, 3, 6, and 12. Results: The mean BCVA was significantly increased from baseline at each control visit (all p < 0.05). The mean CMT and vitreous haze score were significantly decreased from baseline at each control visit (all p < 0.05). Three eyes showed IOP spikes requiring topical anti-glaucomatous treatment. Conclusions: A single injection of DEX implant was safe and effective, as an additional treatment to systemic immunomodulatory drugs, in the treatment of refractory Behçet posterior uveitis, for a 6-month period.


The Journal of Rheumatology | 2015

Isotretinoin-induced Spondyloarthropathy-related Symptoms: A Prospective Study

Samet Alkan; Nuriye Kayiran; Orhan Zengin; Ali Kalem; G. Kimyon; Emine Ozkul Kilinc; Yavuz Pehlivan; Necmettin Kirtak; Ahmet Mesut Onat; Bunyamin Kisacik

Objective. Acne vulgaris is a chronic inflammatory disease involving the pilosebaceous unit of the skin. Isotretinoin is a systemic retinoid that is often used as an effective treatment option for severe and treatment-resistant acne. Isotretinoin may also cause rheumatologic symptoms. The aim of this prospective observational study was to present followup results regarding the rheumatologic symptoms of patients who received systemic therapy for the treatment of acne (isotretinoin and tetracycline). Methods. For inclusion in the study, all consecutive patients with acne who were aged > 18 years were evaluated by the same dermatologist. The first 42 consecutive patients were included in the isotretinoin group, and after matching for age and sex, 32 consecutive patients were included in the tetracycline group. Isotretinoin treatment was planned as an average dose of 30 mg daily and a total dose of 120–150 mg/kg for 4–6 months. The patients were administered a dose of 1 g/day of tetracycline as 2 equal doses for 3 months. Results. Forty-two patients diagnosed with acne vulgaris were treated with isotretinoin 20.6 ± 4.4 (male/female: 17/22), and 32 patients were treated with tetracycline 20.6 ± 2.7 (male/female: 8/24). There was no significant difference between the 2 groups with respect to age and sex. Unilateral Achilles enthesopathy developed in 3 patients, whereas both Achilles enthesopathy and unilateral sacroiliitis developed in 1 patient. Inflammatory back pain developed in 6 patients in the isotretinoin group. Conclusion. To our knowledge, this was the first prospective observational study that assessed the rheumatologic symptoms of isotretinoin treatment. The spondyloarthropathy findings were identified in 23.1% of the patients who used isotretinoin.


Eye | 2016

Evaluation of choroidal thickness in patients with scleroderma.

E Co scedil; Orhan Zengin; S Kenan; G. Kimyon; K Erdogan Er; Seydi Okumus; A Mesut Onat; I Erbagc inodot; B K inodot; sac inodot

PurposeTo investigate the choroidal thickness in patients with scleroderma and to compare them with healthy control subjects.MethodsForty-six patients with scleroderma (3 male and 43 female) and 31 healthy controls (6 male and 25 female) were included in the study. Twenty-five patients had limited-type and 21 patients had diffuse-type scleroderma. Only left eyes of the patients and control subjects were used in the analysis. Demographic features of all the patients and control subjects were recorded. Each subject underwent ophthalmological examinations including refraction, visual acuity, intraocular pressure, axial length (AXL) measurement, slit-lamp biomicroscopy, and fundus examination. Body mass index (BMI) was estimated for all participants.ResultsThere were no significant differences between the patients with scleroderma and the control subjects in terms of age, gender, BMI, mean AXL, and mean spherical equivalent refractive error (SE) (P=0.1, P=0.086, P=0.37, P=0.55, and P=0.072 respectively). The patients with scleroderma had significantly thinner nasal, temporal, and subfoveal choroid than the healthy control subjects (P1=0.012, P2=0.046, and P3<0.001, respectively). There were no significant differences between the patients with limited-type and diffuse-type scleroderma in terms of age, gender, BMI, mean AXL, mean SE, nasal, temporal, and subfoveal choroidal thicknesses (all P>0.05).ConclusionsChoroidal thickness in patients with scleroderma was significantly less than healthy control subjects. Vasculopathy in scleroderma is characterized by obliteration of arterioles and reduced capillary density may cause atrophy of choroid in patients with scleroderma.


Wiener Klinische Wochenschrift | 2016

The evaluation in terms of sarcopenia of patients with fibromyalgia syndrome

Irfan Koca; Esen Savas; Zeynel Abidin Öztürk; Ahmet Boyaci; Samet Alkan; Hamit Yildiz; G. Kimyon

SummaryBackgroundFibromyalgia syndrome (FMS) is an extra-articular rheumatic illness, characterized by widespread body pain and decreased muscle function. Generalized loss of muscle mass and strength is named as sarcopenia. The objective of this study was to evaluate patients with FMS regarding sarcopenia.MethodsThis was a cross sectional, case-controlled, single-blinded, and single-centered study. The FMS patients were assessed by Fibromyalgia Impact Questionnaire (FIQ), visual analog scale (VAS), Beck Depression Index (BDI), and Pittsburg Sleep Quality Scale (PSQI). All the participants were evaluated for sarcopenia by bioimpedance analysis (BIA), anthropometric measurements, handgrip strength, and the parameters of walking speed.ResultsIn this study, 82 patients with FMS and 38 healthy control female subjects were included. VAS, BDI, and PSQI scores were statistically higher in the FMS group than the control group (p < 0.001). Handgrip strength (HS) and walking speed (WS) scores in the group with FMS were statistically lower than the control group (p = 0.023, p < 0.001 respectively). VAS score of FMS patients was significantly correlated with BIA, body mass index, waist circumference, HS, and WS scores (r = 0.284, p = 0.012; r = 0.228, p = 0.045; r = 0.249, p = 0.028; r = − 0.361, p = 0.001; and r = − 0.230, p = 0.043 respectively). Also FIQ in patients was significantly correlated with BIA, waist circumference, HS, WS, and body mass index (r = 0.267, p = 0.018; r = 0.291, p = 0.010; r = − 0.319, p = 0.004; r = − 0.360, p = 0.001; and r  = 0.304, p = 0.007 respectively).ConclusionEvaluation of female patients with primary FMS by the sarcopenia parameters could contribute a more objective evaluation during the patients’ follow-up.


Rheumatology | 2017

The Psoriatic Arthritis Registry of Turkey: results of a multicentre registry on 1081 patients.

Umut Kalyoncu; Ö. Bayındır; Mustafa Ferhat Oksuz; Atalay Dogru; G. Kimyon; Emine Figen Tarhan; Abdulsamet Erden; Şule Yavuz; M. Can; Gözde Yıldırım Çetin; L. Kılıç; Orhan Kucuksahin; Ahmet Omma; C. Özişler; D. Solmaz; Emine Duygu Ersözlü Bozkirli; L. Akyol; Seval Masatlıoğlu Pehlevan; Esen Kasapoglu Gunal; Fatos Arslan; B. Yılmazer; Nilgün Atakan; Sibel Zehra Aydin

Objective. The aim was to assess the characteristics of PsA, find out how well the disease is controlled in real life, demonstrate the treatments and identify the unmet needs. Methods. The PsA registry of Turkey is a multicentre Web-based registry established in 2014 and including 32 rheumatology centres. Detailed data regarding demographics for skin and joint disease, disease activity assessments and treatment choices were collected. Results. One thousand and eighty-one patients (64.7% women) with a mean (S.D.) PsA duration of 5.8 (6.7) years were enrolled. The most frequent type of PsA was polyarticular [437 (40.5%)], followed by oligoarticular [407 (37.7%)] and axial disease [372 (34.4%)]. The mean (S.D.) swollen and tender joint counts were 1.7 (3) and 3.6 (4.8), respectively. Of these patients, 38.6% were on conventional synthetic DMARD monotherapy, 7.1% were on anti-TNF monotherapy, and 22.5% were using anti-TNF plus conventional synthetic DMARD combinations. According to DAS28, 86 (12.4%) patients had high and 105 (15.2%) had moderate disease activity. Low disease activity was achieved in 317 (45.7%) patients, and 185 (26.7%) were in remission. Minimal disease activity data could be calculated in 247 patients, 105 of whom (42.5%) had minimal disease activity. The major differences among sexes were that women were older and had less frequent axial disease, more fatigue, higher HAQ scores and less remission. Conclusion. The PsA registry of Turkey had similarities with previously published registries, supporting its external validity. The finding that women had more fatigue and worse functioning as well as the high percentage of active disease state highlight the unmet need in treatment of PsA.


Revista Brasileira De Reumatologia | 2014

Avaliação da frequência e aspectos dos ataques de pacientes com resistência à colchicina em febre familiar do Mediterrâneo (FFM)

Gozde Yildirim Cetin; Ayse Balkarli; Ali Nuri Öksüz; G. Kimyon; Yavuz Pehlivan; Ozlem Orhan; Bunyamin Kisacik; Veli Cobankara; Hayriye Sayarlioglu; Ahmet Mesut Onat; Mehmet Sayarlioglu

INTRODUCTION Colchicine is the mainstay for the treatment of FMF, which is an auto-inflammatory disease mainly with relapsing polyserositis. Despite daily doses of 2mg or more each day, approximately 5% to 10% of the patients continue to suffer from its attacks. In this study, we aimed to investigate the depression and attack features in patients with FMF who have colchicine resistance (CR). PATIENTS E METHODS CR was defined for FMF patients with 2 or more attacks within the last 6 months period while using 2mg/day colchicine. Eighteen patients (9 Female/9 Male) were enrolled into the CR group and 41 patients were enrolled into the control group (12 Male/29 Female). Demographic, clinical e laboratory findings, treatment adherence, and the Beck Depression Inventory (BDI) scores were evaluated. RESULTS The age of onset of FMF was significantly lower in the CR group (12.3 yrs vs. 16.9 yrs, P=0.03). Disease duration was longer in the CR group (P=0.01). Abdominal and leg pain due to exercise were significantly more frequent in the CR group versus controls (83% vs. 51%; P=0.02 e 88% vs. 60%; P=0.04, respectively). Patients with BDI scores over 17 points were more frequent in the CR group compared to controls (50% vs. 34.1%; P<0.001). DISCUSSION We found that: (1) the age of disease onset was lower and (2) the disease duration was longer in CR group. Pleuritic attacks, hematuria e proteinuria were more frequent in CR patients. We propose that depression is an important factor to consider in the susceptibility to CR.


Revista Brasileira De Reumatologia | 2017

Three cases of anti-TNF induced myositis and literature review

Orhan Zengin; Mustafa Erkut Onder; Samet Alkan; G. Kimyon; Nergis Hüseynova; Zeynep Hanım Demir; Bunyamin Kisacik; Ahmet Mesut Onat

Anti-tumor necrosis factor drugs are frequently preferred in the treatment of rheumatologic diseases and other inflammatory diseases. The development of myositis after using anti-tumor necrosis factor drugs is a rare clinical condition. Here we aimed to report cases who developed myositis after using anti-tumor necrosis factor drugs and review the current literature. We report two cases of rheumatoid arthritis and a case of ankylosing spondylitis developed idiopathic inflammatory myopathy following anti-tumor necrosis factor therapy. In conclusion, myositis could develop during anti-tumor necrosis factor therapy, so these patients should be evaluated carefully initially for myositis and should be closely monitored due to the potential for developing myositis in treatment process.


Revista Brasileira De Reumatologia | 2017

Três casos de miosite induzida pelo anti‐TNF e revisão da literatura

Orhan Zengin; Mustafa Erkut Onder; Samet Alkan; G. Kimyon; Nergis Hüseynova; Zeynep Hanım Demir; Bunyamin Kisacik; Ahmet Mesut Onat

Anti-tumor necrosis factor (anti-TNF) drugs are frequently preferred in the treatment of rheumatologic diseases and other inflammatory diseases. The development of myositis after using anti-TNF is a rare clinical condition. Here we aimed to report cases who developed myositis after using anti-TNF and review the current literature. We report two cases of rheumatoid arthritis (RA) and a case of ankylosing spondylitis (AS) developed idiopathic inflammatory myopathy following anti-TNF therapy. In conclusion, myositis could develop during anti-TNF therapy, so these patients should be evaluated carefully initially for myositis and should be closely monitored due to the potential for developing myositis in treatment process.

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Orhan Zengin

University of Gaziantep

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Timuçin Kaşifoğlu

Eskişehir Osmangazi University

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Mehmet Sayarlioglu

Kahramanmaraş Sütçü İmam University

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Orhan Kucuksahin

Yıldırım Beyazıt University

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