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Dive into the research topics where Keramettin Yanik is active.

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Featured researches published by Keramettin Yanik.


European Journal of Obstetrics & Gynecology and Reproductive Biology | 2014

Investigation of diagnostic potentials of nine different biomarkers in endometriosis.

Erdem Ozhan; Arif Kokcu; Keramettin Yanik; Murat Gunaydin

OBJECTIVE To investigate the diagnostic potentials of the serum levels of nine different biomarkers in endometriosis. STUDY DESIGN In this case-controlled, prospective clinical study, 80 women underwent laparoscopy or laparotomy with a preliminary diagnosis of chronic pelvic pain, severe secondary dysmenorrhea, infertility, pelvic endometriosis or pelvic mass. The 60 women with confirmed pelvic endometriosis constituted the endometriosis group, and the other 20 women without endometriosis constituted the control group. Preoperative blood samples were obtained for serum biomarker measurements. Serum levels of nine different serum biomarkers including α-enolase, macrophage migration inhibitory factor, leptin, interleukin-8, anti-endometrial antibody, phosphoinositide dependent protein kinase 1, CA125, syntaxin-5, and laminin-1 were measured concurrently and compared between the control and endometriosis groups, and among control group and endometriosis subgroups including stage I, stage II, stage III and stage IV endometriosis. RESULTS The serum levels of α-enolase, macrophage migration inhibitory factor, leptin, interleukin-8 and antiendometrial antibodies showed a statistically significant difference neither between control and endometriosis groups nor among control group and endometriosis subgroups. The serum levels of CA125, syntaxin-5 and laminin-1 showed a statistically significant difference both between the control and endometriosis groups (p<0.01) and among control group and endometriosis subgroups (p<0.01). Serum levels of laminin-1 in stage II and IV endometriosis; syntaxin-5 in stage I and II endometriosis; and CA125 in stage III and IV endometriosis were found to have the different levels compared to control group. CONCLUSIONS These findings show that the concurrent measurement of CA125, syntaxin-5 and laminin-1 might be a useful non-invasive test in strengthening the diagnosis of endometriosis and in predicting its severity.


Annals of Clinical Microbiology and Antimicrobials | 2013

Distribution of nontuberculous Mycobacteria strains.

Murat Gunaydin; Keramettin Yanik; Cafer Eroglu; Ahmet Saniç; Ismail Ceyhan; Zayre Erturan; Riza Durmaz

AimMycobacteria other than tuberculosis (MOTT) cause increasingly serious infections especially in immunosuppressive patients by direct transmission from the environment or after colonization. However, identification of these species is difficult because of the cost and difficulties in defining to species level. Identification and distribution of these species can help clinician in the choice of treatment.Materials and methodsA total of 90 MOTT strains obtained from four different centers were included in the study. These strains were identified by sequence analysis of 16S rRNA and Hsp65 genetic regions.ResultsAccordingly, within the 90 MOTT strains, 17 different species were identified. In order of frequency, these species were M. gordonea (n = 21), M. abscessus (n = 13), M. lentiflavum (n = 9), M. fortuitum (n = 8), M. intracellulare (n = 6), M. kumamotonense (n = 6), M. neoaurum (n = 5), M. chimaera (n = 5), M. alvei (n = 5), M. peregrinum (n = 3), M. canariasense (n = 3), M. flavescens (n = 1), M. mucogenicum (n = 1), M. chelona (n = 1), M. elephantis (n = 1), M. terrae (n = 1) and M. xenopi (n = 1). Most frequently identified MOTT species according to the geographical origin were as follows: M. abscessus was the most common species either in Istanbul or Malatya regions (n = 6, n = 6, consequently). While M. kumamotonense was the most frequent species isolated from Ankara region (n = 6), M. gordonea was the most common for Samsun region (n = 14).ConclusionOur study revealed that frequency of MOTT varies depending on the number of clinical samples and that frequency of these species were affected by the newly identified species as a result of the use of novel molecular methods. In conclusion, when establishing diagnosis and treatment methods, it is important to know that infections caused by unidentified MOTT species may vary according to the regions in Turkey. The results of the study showed that there were differences in the frequency of MOTT species in the different geographical regions of Turkey.


Human Vaccines & Immunotherapeutics | 2016

Serotype distribution of Streptococcus pneumoniae in children with invasive diseases in Turkey: 2008–2014

Mehmet Ceyhan; Yasemin Ozsurekci; Nezahat Gürler; Lütfiye Öksüz; Sohret Aydemir; Sengul Ozkan; Serife Yuksekkaya; Melike Keser Emiroglu; Meral Gultekin; Akgün Yaman; Abdurrahman Kiremitci; Keramettin Yanik; Arzu Karli; Hatice Ozcinar; Faruk Aydin; Gülçin Bayramoğlu; Yasemin Zer; Zeynep Gülay; Efgan Dogan Gayyurhan; Mustafa Gul; Cuneyt Ozakin; Hüseyin Güdücüoğlu; Duygu Percin; Nezahat Akpolat; Candan Öztürk; Yildiz Camcioglu; Eda Karadag Oncel; Melda Celik; Laser Şanal; Hakan Uslu

Successful vaccination policies for protection from invasive pneumococcal diseases (IPD) dependent on determination of the exact serotype distribution in each country. We aimed to identify serotypes of pneumococcal strains causing IPD in children in Turkey and emphasize the change in the serotypes before and after vaccination with 7-valent pneumococcal conjugate vaccine (PCV-7) was included and PCV-13 was newly changed in Turkish National Immunization Program. Streptococcus pneumoniae strains were isolated at 22 different hospitals of Turkey, which provide healthcare services to approximately 65% of the Turkish population. Of the 335 diagnosed cases with S. pneumoniae over the whole period of 2008–2014, the most common vaccine serotypes were 19F (15.8%), 6B (5.9%), 14 (5.9%), and 3 (5.9%). During the first 5 y of age, which is the target population for vaccination, the potential serotype coverage ranged from 57.5 % to 36.8%, from 65.0% to 44.7%, and from 77.4% to 60.5% for PCV-7, PCV-10, and PCV-13 in 2008–2014, respectively. The ratio of non-vaccine serotypes was 27.2% in 2008–2010 whereas was 37.6% in 2011–2014 (p=0.045). S. penumoniae serotypes was less non-susceptible to penicillin as compared to our previous results (33.7 vs 16.5 %, p=0.001). The reduction of those serotype coverage in years may be attributed to increasing vaccinated children in Turkey and the increasing non-vaccine serotype may be explained by serotype replacement. Our ongoing IPD surveillance is a significant source of information for the decision-making processes on pneumococcal vaccination.


Japanese Journal of Infectious Diseases | 2016

In Vivo Efficacy of Drugs against Toxoplasma gondii Combined with Immunomodulators

Zeynep Şentürk Köksal; Keramettin Yanik; Kemal Bilgin; Esmeray Mutlu Yılmaz; Murat Hokelek

The aim of this study is to evaluate the effects of pyrimethamine (PYR) and sulfadiazine (SDZ) combined with levamisole and echinacea on the survival of mice infected with Toxoplasma gondii. For this, we used 99 specific pathogen-free BALB/c mice. All the mice were infected intraperitoneally with 10(5) T. gondii tachyzoites and were divided into 11 groups, each including 9 mice. Except for the control group, oral treatment was initiated in all groups 24 h post infection and was continued for 10 days. The treatment regimen included dual combinations of PYR (dose, 6.25 and 12.5 mg/kg/day) and SDZ (dose, 100 and 200 mg/kg/day), triple combinations of PYR + SDZ, and levamisole (dose, 2.5 mg/kg/day) or echinacea (dose, 130 and 260 mg/kg/day) and echinacea alone (dose, 130 and 260 mg/kg/day). We observed that an effective dose of the combination of PYR + SDZ and levamisole resulted in a statistically significant increase in the survival rate from 33.3% to 88.9%. Similarly, half the dose of this combination resulted an increase in the survival rate from 0% to 44.4% (p < 0.05). Survival rate also increased in the groups treated with the combinations including echinacea; however, the difference did not reach statistical significance. The triple combination of PYR-SDZ-levamisole could be an alternative treatment option in case of infections caused by T. gondii.


Dicle Medical Journal / Dicle tıp Dergisi | 2011

Bir hastanede gaita örneklerinde direkt mikroskopik inceleme ve ELISA ile Entamoeba histolitika araştırılması

Türkan Toka Özer; Erkan Yula; Özcan Deveci; Alicem Tekin; Süleyman Durmaz; Keramettin Yanik

Objectives: Stool antigen assay has been shown to be as sensitive and specific as culture with isoenzyme analysis and to outperform microscopy for the detection of E.histolytica in endemic area. The aim of the present study is to investigate the presence of E.histolytica by direct microscopic examination and ELISA in stool samples, comparatively. Materials and methods: Between September 2010 and May 2011, a total of 975 stool samples of patients in different age groups were sent to microbiology laboratory


Annals of Clinical Microbiology and Antimicrobials | 2009

Correction: Are we aware how contaminated our mobile phones with nosocomial pathogens?

Fatma Ulger; Saban Esen; Ahmet Dilek; Keramettin Yanik; Murat Gunaydin; Hakan Leblebicioglu

Address: 1Department of Anesthesiology and Reanimation, Faculty of Medicine, Ondokuz Mayis University, Kurupelit, 55139, Samsun, Turkey, 2Department of Infectious Diseases and Clinical Microbiology, Faculty of Medicine, Ondokuz Mayis University, Kurupelit, 55139, Samsun, Turkey and 3Department of Clinical Microbiology, Faculty of Medicine, Ondokuz Mayis University, Kurupelit, 55139, Samsun, Turkey


Pediatrics International | 2014

Ventriculoperitoneal shunt infection with Listeria innocua

Arzu Karli; Gulnar Sensoy; Nevzat Unal; Keramettin Yanik; Halit Cigdem; Nursen Belet; Ayşe I. Sofuoğlu

Listeria species may cause life‐threatening events including meningitis and invasive infection in newborns, pregnant women, older and immunodeficient people. The most common Listeria species that causes infection is L. monocytogenes. It is known that Listeria innocua has no pathogenicity. A 9‐month‐old baby had ventriculoperitoneal shunt and was treated with adrenocorticotropic hormone because of infantile spasms. He was brought to hospital with fever and vomiting. Upon physical examination, the patient seemed uncomfortable and had a temperature of 38.6°C. Laboratory results were as follows: hemoglobin, 6.7 g/dL; leukocyte count, 5420/mm3; platelet count, 169 000/mm3; and C‐reactive protein, 100 mg/L (normal <5 mg/L). On analysis of cerebrospinal fluid (CSF), leukocyte count was 480/mm3, protein was 46 mg/dL and CSF glucose was 35 mg/dL. L. innocua was isolated in CSF culture. We describe this unusual case of ventriculoperitoneal shunt infection with L. innocua.


Acta parasitologica Turcica | 2013

[Strongyloides stercoralis in a patient with ankylosing spondylitis: case report].

Keramettin Yanik; Adil Karadag; Hakan Odabasi; Nevzat Unal; Levent Altintop; Murat Hokelek

Strongyloidiasis is a nematode-borne disease caused by several Strongyloides species. This case was presented in order to indicate Strongyloidosis in immunocompromised patients with several clinical findings. A fifty-five year old male patient on corticosteroid medication for a long time because of ankylosing spondylitis was on infliximab medication for 5 years. He presented with swelling of his right foot for ten days, right shoulder stiffness and low back pain. The presence of anaemia was remarkable. S. stercoralis was reported in histological examination of endoscopic duodenal biopsy specimen. Peripheral blood smear showed 68.4% neutrophils, 17% lymphocytes, 7.5% monocytes, and 6.7% (normal range 2%-6.2) eosinophils. The level of IgE was raised: 285IU/mL (normal range 5-120IU/mL). A large number of S. stercoralis larvae were detected upon stool examination with saline and iodine mounts and the formaldehyde ether concentration method. After treatment with two cure albendazole 400 mg/day for 7 days, S. stercoralis larvae were not detected in stool examination. It is interesting that response to treatment was not observed on the first cure and the recovery was seen on the second cure. We suggest that hyperinfections should be taken into consideration in the diagnosis and treatment of immunocompromised patients with several complaints so that life-threatening effects of the nematode may be prevented.


Acta parasitologica Turcica | 2013

[Evaluation of materials sent due to suspected cystic echinococcosis to the parasitology laboratory of Ondokuz Mayıs University Medical School between the Years 2005-2011].

Adil Karadag; Keramettin Yanik; Nevzat Unal; Hakan Odabasi; Murat Hokelek

OBJECTIVE Cystic echinococcosis (CE) is an important health problem common in our country. In this study, anti-Echinococcus granulosus IgG antibodies were investigated in the serum samples of 454 patients who attended the Ondokuz Mayıs University, Faculty of Medicine, Department of Parasitology between 2005 and 2011. METHODS IHA (Fumouze, France) and ELISA (R-Biopharm, Germany) tests were performed at the same time. RESULTS While serum samples from 328 patients (72%) were negative with both tests, 81 samples (18%) were found to be positive with both tests. Forty (49%) cases were female, 41 (51%) cases were male who were positive by both tests. 25 (31%) positive cases were between 31 and 50 years old. While IHA was negative for 33 patients (7%) ELISA was positive for the same samples. In 2 patients (0.4%), both tests revealed low-positivity. CONCLUSION Using these two tests together for serologic detection of cystic echinococcosis could be recommended because of the high sensitivity and specificity ratios.


Journal of Clinical and Experimental Investigations | 2011

Evlilik öncesi yapılan tarama testi sonuçlarının değerlendirilmesi

Türkan Toka Özer; Erkan Yula; Özcan Deveci; Keramettin Yanik; Süleyman Durmaz; Alicem Tekin

Objectives: Human immunodeficiency virus (HIV), Hepa titis B and Hepatitis C viruses and Treponema pallidum are parenterally and sexually transmitted infection agents. Screening test is made before marriage to pre-marital couples legally under the relevant legislation and legal procedures in our country; applicants are evaluated in terms of sexually transmitted diseases. The aim of this study is to evaluate pre-marital test results for HBsAg, anti-HCV, anti-HIV I/II and Treponema pallidum.

Collaboration


Dive into the Keramettin Yanik's collaboration.

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Murat Gunaydin

Ondokuz Mayıs University

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Adil Karadag

Ondokuz Mayıs University

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Nevzat Unal

Ondokuz Mayıs University

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Murat Hokelek

Ondokuz Mayıs University

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Saban Esen

Ondokuz Mayıs University

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Asuman Birinci

Ondokuz Mayıs University

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Kemal Bilgin

Ondokuz Mayıs University

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Hakan Odabasi

Ondokuz Mayıs University

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Hava Yilmaz

Ondokuz Mayıs University

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