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    The epidemiology of dermatomyositis in northwestern Thrace region in Turkey: epidemiology of dermatomyositis in Turkey
    (Springer Heidelberg, 2017) Balci, Mehmet Ali; Donmez, Salim; Saritas, Fatih; Bas, Volkan; Pamuk, Omer Nuri
    Dermatomyositis (DM) is a rare disease that may affect the skeletal muscles and the skin. Literature data on its incidence and prevalence are limited. There are no data on its incidence or prevalence in Turkey. Patients diagnosed with DM at the Trakya University Medical Faculty, Department of Rheumatology from November 2004 to November 2014 were reviewed retrospectively. Patients' clinical and demographic features, laboratory data, treatment modalities, follow-up durations, disease courses, outcomes, and complications were evaluated. Our study included 23 patients with DM; 14 were females and 9 were males (female/male: 1.55). Over the course of the study, the annual incidence of DM was 3.7 per million (95% CI 0-18.8) person years, and the overall prevalence was 32.2 per million (95% CI 18.1-46.3). Incidence in women was higher (4.6/1,000,000 person years) compared to men (2.9/1,000,000 person years). The frequencies of most common findings were as follows: heliotrope rash (82.6%), Gottron papules (87%), proximal myopathy (78.3%), and facial erythema (60.9%). In our hospital-based study, the frequency of DM was lower than those reported in North America; however, they were similar to European countries.
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    The epidemiology of Takayasu arteritis: a hospital-based study from northwestern part of Turkey
    (Springer Heidelberg, 2016) Saritas, Fatih; Donmez, Salim; Direskeneli, Haner; Pamuk, Omer Nuri
    Takayasu arteritis (TA) is a chronic, inflammatory large vessel vasculitis that affects aorta and its main branches. We aimed to evaluate the incidence and prevalence of TA in the northwestern part of Turkey. We retrospectively evaluated 23 TA patients followed by our clinic. Clinical features, treatments and responses were recorded. Our hospital is the single tertiary referral center for rheumatic diseases for a mixed rural and urban population of 620,447 people for > 16 years (306,036 males, 314,411 females). Nineteen of the 23 patients were females (82.6 %) and four were males (17.4 %). The annual incidence rate for TA was 0.34/100,000. The overall prevalence of TA in our region was 3.3/100,000 (95 % CI 1.9-4.8) in individuals > 16 years. The most common findings at the time of presentation were blood pressure difference (73 %) and headache (60.4 %). The most common angiographic type was type 1 (12 patients, 52.2 %). Median follow-up period was 48 months (range 10-132). Three (13 %) of the patients had stent replacements to different vascular sites. One patient had an operation for aortic aneurysm, and aortic valve replacement surgery has been made. One patient had renal artery bypass operation. Eleven patients (47.8 %) had recurrency at follow-up period and two patients (8.7 %) died. In northwestern part of Turkey, the annual incidence and prevalence of TA were higher than western population, but similar to East Asian data.
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    PECAM-1 gene polymorphisms and soluble PECAM-1 level in rheumatoid arthritis and systemic lupus erythematosus patients: any link with clinical atherosclerotic events?
    (Springer London Ltd, 2014) Pamuk, Omer Nuri; Tozkir, Hilmi; Uyanik, Mehmet Sevki; Gurkan, Hakan; Saritas, Fatih; Duymaz, Julide; Donmez, Salim
    Genetic polymorphisms of platelet endothelial cell adhesion molecule-1 (PECAM-1) were found to play roles in atherosclerotic events. We determined PECAM-1 polymorphisms, soluble PECAM-1, and CD40L levels in rheumatoid arthritis (RA) and systemic lupus erythematosus (SLE) and evaluated their associations with clinical atherosclerotic complications. We included 100 RA patients, 81 SLE patients, and 94 healthy controls. The clinical features about the patients were obtained from medical records. Past cardiovascular complications were recorded. The most frequent gene polymorphisms of PECAM-1 were studied in our genetics laboratory. Soluble PECAM-1 and CD40L levels in serum were determined with ELISA. The frequencies of 373C (rs668) and 1688A (rs12953) alleles were higher in RA patients when compared to controls (p values, 0.028 and 0.016). RA and SLE patients had significantly higher allele frequencies for 2008A (rs1131012) when compared to controls (p values, 0.016 and 0.001). SLE patients had significantly more frequent AA genotype for rs1131012 polymorphism than RA patients and controls (p values, 0.007 and < 0.001). Soluble PECAM-1 level was significantly higher in RA patients than in SLE patients and healthy controls (p values < 0.001). Atherosclerotic complications were more frequent in SLE patients with AG genotype (rs12953) than those with AA genotype (p = 0.021). SLE patients with CC genotype (rs668) had a significantly lower frequency of atherosclerotic complications than those with CG genotype (p = 0.045). Nevertheless, in multivariate analysis, there was no association between genotype and atherosclerotic complications. We found associations between various PECAM-1 polymorphisms in RA and SLE; PECAM-1 and soluble CD40 ligand (sCD40L) levels were significantly higher in RA patients than in SLE and control groups. PECAM-1 polymorphisms in SLE were protective against atherosclerotic complications.