Omer Poyraz

Cumhuriyet University, Megalopolis, Sivas, Turkey

Are you Omer Poyraz?

Claim your profile

Publications (9)19.66 Total impact

  • [Show abstract] [Hide abstract]
    ABSTRACT: The purpose of this study is to determine erythrocyte sedimentation rate (ESR), C - reactive protein (CRP), serum amyloid-A (SAA) and cholesterol levels in patients with Crimean-Congo Hemorrhagic Fever (CCHF) and determine the relationship of these parameters with the severity of disease. By polymerase chain reaction and enzyme-linked immunosorbent assay (ELISA) method 40 patients were diagnosed as CCHF and 39 volunteer without any systemic disease whose blood were taken and their serum separated. SAA, CRP and ESR were measured with ELISA, nephelometry and Mix-Rate x100 vital diagnostic device, respectively, in serum samples. High density lipoprotein (HDL), low density lipoprotein (LDL) and total cholesterol levels were determined by using autoanalyzer HDL, LDL and total cholesterol kit (Syncron LX20). Statistically significant difference was determined between patients and controls in terms of the levels of SAA, CRP, HDL, LDL and total cholesterol (p<0.05). However, there was no significant difference between the groups in terms of the levels of ESR. In addition, neither SAA, CRP, ESR nor HDL, LDL and total cholesterol levels varied with the severity of disease in the cases assessed (p>0.05). Using of CRP and SAA together might increase the sensitivity of diagnosis of CCHF infection. However, none of the parameters investigated in this study were found to be a proper marker of the prognosis in CCHF. Cholesterol levels were significantly decreased in patients with CCHF, which was suggested to be associated with the increased serum levels of SAA in the patient group.
    Bosnian journal of basic medical sciences / Udruzenje basicnih mediciniskih znanosti = Association of Basic Medical Sciences 02/2013; 13(1):21-6. · 0.41 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: The aim of this study was to evaluate the impact of smoking on the relationship between interleukin-1 (IL-1β) and oxidation in patients with periodontitis and response to nonsurgical periodontal therapy. Data were obtained from 30 patients with generalized chronic periodontitis (15 smokers and 15 nonsmokers) and from 10 periodontally healthy controls. IL-1β level, total oxidant status (TOS) and total antioxidant status (TAS) were recorded in gingival crevicular fluid. Probing depth, clinical attachment level, gingival and plaque indices and bleeding on probing were also measured. The gingival crevicular fluid and clinical parameters were recorded at baseline and 6 wk after periodontal treatment. The study showed statistically significant improvement of clinical parameters in both smokers and nonsmokers after periodontal treatment. Moreover, the baseline IL-1β levels were significantly higher in smokers compared with nonsmokers (p < 0.05). After periodontal treatment, the IL-1β levels were significantly reduced in both smokers and nonsmokers (p < 0.05). There were no significant differences in TOS and TAS between periodontitis patients and healthy controls at baseline and 6 wk after periodontal treatment. The level of IL-1β in gingival crevicular fluid was positively correlated with TOS in both smokers and nonsmokers. Periodontal treatment improved the clinical parameters in both smokers and nonsmokers. The results confirm that periodontal therapy has an effect on IL-1β levels in gingival crevicular fluid, but not on TOS and TAS.
    Journal of Periodontal Research 02/2012; 47(5):572-7. DOI:10.1111/j.1600-0765.2012.01468.x · 2.22 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: The role of various microorganisms including Chlamydophila (formerly Chlamydia) pneumoniae, have been frequently investigated in the pathogenesis of atherosclerosis. In our study, the relationship between C.pneumoniae seropositivity and risk factors for atherosclerosis have been evaluated. A total of 90 atherosclerotic patients (71 of them were male; age range: 45-87 years; mean age: 65.3 ± 8.7 years) and 90 control subjects without coronary diseases (41 of them were male; age range: 42-84 years; mean age: 61.6 ± 9.6 years) were included in the study. Both groups were also evaluated for the presence of risk factors such as age, gender, smoking, hypertension, diabetes, obesity, dyslipidemia, familial history and the high levels of ferritin, cholesterol (total, HDL and LDL) and HS (high sensitive)-CRP. The presence of C.pneumoniae IgG, IgM and IgA antibodies were investigated by micro-immunofluorescence (MIF) and ELISA methods using commercial kits (Euroimmun, Germany). The total antibody seropositivity rate was found 100% (90/90) in patient group by both MIF and ELISA methods, while this rate in control group was 94% (85/90) by MIF and 92% (83/90) by ELISA. When MIF test results were taken into consideration (since it is accepted as the reference method for C.pneumoniae serology), IgG, IgM and IgA positivity rates in patient and control groups were found as 100% (90/90) and 89% (80/90); 70% (63/90) and 59% (53/90); 3% (3/90) and 2% (2/90), respectively. Statistically significant difference between patient and control groups was detected only for IgG positivity (p< 0.05) and for total antibody positivities (100% and 94%, respectively) (p< 0.05). The evaluation of the risk factors revealed that age, hypertension, dyslipidemia and HS-CRP levels exhibited statistically significant differences between patient and control groups (p< 0.05 for each parameter tested). Statistically significant relation was detected only between high HS-CRP levels and C.pneumoniae seropositivity (p< 0.05). It was concluded that in areas with high C.pneumoniae infection prevalence, early diagnosis and specific treatment of C.pneumoniae infections, may prevent establishment of chronic infection and eliminate a risk factor for the development of atherosclerosis.
    Mikrobiyoloji bülteni 01/2012; 46(1):156-8. · 0.44 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: Aim: To investigate the seroprevalence of Anaplasma phagocytophilum in people living in 2 different climatic regions and to evaluate the co-seroprevalence rate of A. phagocytophilum with Borrelia burgdorferi. Sinop and Tokat provinces, both in the middle Black Sea region of Turkey, have distinct climatic features. Materials and methods: In 2006-2007, serum samples were collected from people living in rural areas of Tokat and Sivas, and anti-A. phagocytophilum IgG antibodies were explored by the IFA method. Positive samples were further investigated for the possible presence of B. burgdorferi IgG antibodies. Results: A. phagocytophilum seropositivity was found in 29 (10.62%) out of 273 serum samples in Sinop and 21 (5.77%) out of 364 serum samples in Tokat (P = 0.035). Co-seroprevalence for A. phagocytophilum and B. burgdorferi was found to be 3.30% in Sinop and 0.55% in Tokat (P = 0.012). Conclusion: The current study suggests that A. phagocytophilum infections can be seen in humans from different climatic regions of Turkey. Both the seroprevalence of A. phagocytophilum and the possibility of mixed infections of A. phagocytophilum and B. burgdorferi are higher in places with more suitable habitats for Ixodes ricinus ticks.
    Turkish Journal of Medical Sciences 10/2011; 41(5):903-908. DOI:10.3906/sag-1009-1148 · 0.84 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: During June and July 2007, about 3125 adult ticks were collected from humans, animals, and vegetation in a hyperendemic region (Sivas and Tokat) of Turkey. A total of 2193 ticks were pooled in 225 pools and screened for the Crimean Congo hemorrhagic fever virus (CCHFV) presence by antigen-capture enzyme-linked immunosorbent assay. Infection rates were calculated as the maximum likelihood estimation with 95% confidence intervals (CI). The dominant tick species was found to be Hyalomma marginatum with the following infestation rates in human, cattle and sheep, respectively: 47.43%, 66.07%, and 30.12%. Maximum likelihood estimation values of CCHFV in H. marginatum ticks collected from human, cattle, and sheep were 0.91% (CI 0.05-4.42), 2.10% (CI 1.12-3.64), and 3.11% (CI 1.18-6.87), respectively. CCHFV antigens were also demonstrated in Hyalomma excavatum, Haemaphysalis parva, and Boophilus annulatus ticks collected from cattle and Rhipicephalus bursa ticks from sheep. Our results suggest that the studied area might maintain its endemic properties in the near future unless effective tick control measures are implemented.
    Vector borne and zoonotic diseases (Larchmont, N.Y.) 07/2011; 11(10):1411-6. DOI:10.1089/vbz.2011.0651 · 2.53 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: In the Tokat and Sivas provinces of Turkey, the overall Crimean-Congo hemorrhagic fever virus (CCHFV) seroprevalence was 12.8% among 782 members of a high-risk population. CCHFV seroprevalence was associated with history of tick bite or tick removal from animals, employment in animal husbandry or farming, and being >40 years of age.
    Emerging Infectious Diseases 04/2009; 15(3):461-4. DOI:10.3201/eid1503.080687 · 7.33 Impact Factor
  • Hulya Toker, Omer Poyraz, Kaya Eren
    [Show abstract] [Hide abstract]
    ABSTRACT: The aim of this study was to examine the effect of phase I periodontal treatment on the levels of interleukin (IL)-1beta, IL-1ra, and IL-10 in gingival crevicular fluid (GCF) in patients with generalized aggressive periodontitis (G-AgP). Data were obtained from 15 patients with aggressive periodontitis and 15 healthy controls. GCF was collected from at least four pre-selected sites (one shallow, at least two moderate, or at least one deep pockets) in patients with G-AgP. In the healthy group, GCF samples were collected from one site. The cytokine levels were determined by an enzyme-linked immunosorbent assay. Probing depth, clinical attachment level (CAL), gingival and plaque indices, and bleeding on probing were measured. The GCF sampling and clinical measurements were recorded at baseline and 6 weeks later after periodontal treatment. IL-1beta levels were significantly higher at the moderate and deep pocket sites compared with the shallow sites (p<0.05). After periodontal therapy, IL-1beta levels were significantly reduced in the moderate and deep pocket sites (p<0.05). IL-1ra levels at baseline of the moderate and deep pocket sites were significantly lower than the control sites (p<0.05). IL-10 levels were similar in all pockets and did not change after periodontal therapy. The periodontal treatment improves the clinical parameters in G-AgP, and this improvement is evident in deep pocket sites for pocket depth and CAL values. These results confirm that IL-1beta is effective for evaluating the periodontal inflammation and can thus be used as a laboratory tool for assessing the activity of periodontal disease.
    Journal Of Clinical Periodontology 06/2008; 35(6):507-13. DOI:10.1111/j.1600-051X.2008.01213.x · 3.61 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: Study was started in November 2005 and education practices and other activities have been realized between the dates of December 2005 and 5 January 2006. A wide group has been chosen from the students who are at the level of primary and secondary education to adults as a target mass to create awareness. Correspondences related to the subject have been done with Cumhuriyet University rector ship, Sivas governs ship, Sivas manager of education, Sivas mufti and essential otorizations got. Pictorial leaflets which introduce disease and explain infection and ways of protection are prepared and sent all province and county school by means of Manager of Education. Besides, lots of leaflet is distributed to tradesmen and public. Large sized posters are published about disease to make people aware of it. It is provided that these posters are distributed to all schools and mosques. Lectures are organized to introduce the disease and emphasize the ways of protection in five fixed center by two sessions. It is provided that 89 primary and secondary school students' attendance regularly with their teachers. Besides the working of society awareness, preparing executing and treating of control programs about cystic echinococcosis are other important and necessary stages.
    Turkiye parazitolojii dergisi / Turkiye Parazitoloji Dernegi = Acta parasitologica Turcica / Turkish Society for Parasitology 02/2007; 31(4):313-7.
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: The aim of the present study was to determine the effects of meloxicam after initial periodontal treatment on interleukin-1beta (IL-1beta) and IL-1 receptor antagonist (IL-1ra) in gingival crevicular fluid (GCF) and clinical parameters in the chronic periodontitis patients. Data were obtained from 30 patients with chronic periodontitis. Fifteen chronic periodontitis patients received 7.5 mg meloxicam, and 15 patients received placebo tablets in a 1x1 regimen for 1 month. All subjects were nonsmokers and had not received any periodontal therapy. The plaque index (PI), gingival index (GI), probing depth (PD), and clinical attachment level (CAL) were recorded. The GCF was collected using a paper strip: eluted and enzyme-linked immunoabsorbent assays (ELISAs) were performed to determine the cytokine levels. The clinical data and GCF samples were obtained after periodontal therapy and 1 month after periodontal therapy. The PI, GI, PD, and GCF IL-1ra decreased significantly (p<0.05) in meloxicam group at first month when comparing the initial levels. While decrease of the PI was statistically significant in control group (p<0.05), statistically significant changes were not determined in the other clinical parameters and GCF cytokine levels (p>0.05). There were no significant differences between two groups in any of the investigated parameters. Our observations did not reveal any influence of meloxicam on levels of IL-1beta and IL-1ra in chronic periodontitis. Additional clinical studies are advisable to determine whether COX-2 selective drugs alter periodontal disease outcome with greater safety.
    Clinical Oral Investigations 12/2006; 10(4):305-10. DOI:10.1007/s00784-006-0062-3 · 2.29 Impact Factor

Publication Stats

84 Citations
19.66 Total Impact Points


  • 2006–2013
    • Cumhuriyet University
      • • Department of Biochemistry
      • • Faculty of Medicine
      Megalopolis, Sivas, Turkey