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Öğe Brucellosis seroprevalence in southeast Turkey (Diyarbakir)(2004) Atmaca S.; Özekinci T.; Akpolat N.; Elçi S.; Suay A.; Arikan E.This study was conducted to determine brucellosis seropositivity in patients suspected of having brucellosis who sought treatment at the Central Laboratory of Dicle University Medical Faculty Hospital in southeast Turkey (Diyarbakir). 20,663 serum samples were collected during the study (1 August 2001-31 December 2002), and 14,480 sera were tested in a 12-month period on a seasonal basis by Rose-Bengal slide agglutination (RBSA), and positive sera were titrated by standard tube agglutination (STA). Titration values of 1/160 and above were considered positive. Of the 20663 sera, 463 (2.2%) tested positive on RBSA. Of these 463 sera, 267 (57.6%) tested positive on STA, with titers of 1/160 and higher. Seasonally, hospital attendance was highest in the summer and lowest in the winter. On STA tests done on RBSA-positive samples, the highest concentration of titers of 1/160+ was in the spring. In order to eliminate brucellosis in southeast Turkey, an endemic region for the disease, precautions must be increased, the unregulated slaughtering and consumption of animals must be prevented, and the consumption of raw, unpasteurized milk and of dairy products made from such milk must be halted.Öğe Effect of EDTA on the Susceptibility of Pseudomonas aeruginosa to Imipenem, Ceftazidime and Cefepime in Mueller-Hinton Agar(2003) Akpolat N.; Özekinci T.; Aktar G.; Karaşahin Ö.; Suay A.[No abstract available]Öğe Effect of Mg+2 concentration in Mueller-Hinton agar on the susceptibility of pseudomonas aeruginosa to levofloxacin(2001) Akpolat N.; Özekinci T.; Atmaca S.[No abstract available]Öğe Evaluation of the Ehrlich-Ziehl-Neelsen (EZN) and amplified Mycobacterium tuberculosis direct test according to the BACTEC method in respiratory and nonrespiratory samples(2007) Özekinci T.; Meşe S.; Atmaca S.; Akpolat N.; Gül K.Aim: Tuberculosis remains a significant and threatening disease, particularly in developing countries. Mycobacterium tuberculosis should be detected and identified as soon as possible to ensure the prevention of the spread of the disease. For this purpose, use of fast and reliable laboratory diagnostic methods with high sensitivity and specificity was initiated in recent years. Materials and Methods: In this study, 107 respiratory and 198 nonrespiratory (305 in total) samples submitted to Dicle University Faculty of Medicine Clinical Microbiology Laboratory were examined using the Ehrlich-Ziehl-Neelsen (EZN), BACTEC 460 TB (Becton and Dickinson Diagnostic Instrument System, Towson, MD), and MTD (Amplified Mycobacterium tuberculosis Direct Test, Gen-Probe, USA) methods. Results: In respiratory samples, sensitivity of EZN was found as 83.33%, specificity as 95.04%, positive predictive value as 50%, and negative predictive value as 98.96%, whereas in nonrespiratory samples these values were 18.18%, 98.39%, 40%, and 95.37%, respectively. In respiratory samples, sensitivity of MTD was found as 83.33%, specificity as 94.05%, positive predictive value as 45.45%, and negative predictive value as 98.95%, whereas in nonrespiratory samples these values were 54.54%, 88.23%, 21.42%, and 97.05%, respectively. Conclusions: In view of the above, the pre-diagnostic EZN test and the MTD method based on nucleic acid amplification should be applied together with the BACTEC 460 system, which is considered as a gold standard, and the evaluation should be made accordingly. Furthermore, MTD should not be used as a screening test due to its high cost, and should rather be preferred in smear-positive samples. © TÜBİTAK.Öğe In vitro efficiency of ertapenem among escherichia coli strains isolated from clinical specimens(2013) Tekin A.; Deveci Ö.; Dal T.; Tekin R.; Bacalan F.; Akpolat N.In this study, in vitro efficiency of ertapenem and extanded-spectrum beta-lactamase (ESBL) producing among Escherichia coli strains isolated from clinical specimens were investigated. 334 E. coli strains isolated from clinical specimens that sent to Dicle University Hospital clinical microbiology laboratory between December 2010 and August 2011 were included in this study. Identification of isolates was performed by conventional methods and a fully automated microbiology system. Antimicrobial susceptibility testing of strains was performed by Kirby- Bauer's disc diffusion method and E-test method. Double-disk synergy method was used for the detection of ESBL-producing. 334 E. coli strains were isolated from clinical specimens as 233 (69.8%) urine, 55 (16.4%) blood, 32 (9.6%) wound swabs and 14 (4.2%) others. In 177 (53%) from 334 E. coli strains were determined the ESBL activity. Ertapenem sensitivity rate among strains was determined as 93.4%. Although there was no resistance to ertapenem in ESBL-non-producing strains, ertapenem resistance rate was found as 12.4% in ESBL-producing strains. The high resistance rate for ertapenem in ESBL-producing strains according to the ESBL-non-producing strains was found to be statistically significant (p<0.001). In the light of present study, we think as the better option of ertapenem which has got a high sensitivity rate in the treatment with antimicrobial agents of infections caused by ESBL-producing E. coli strains at least in our hospital.Öğe Short communication: Evaluation of the correlation between hepatitis D virus (HDV) RNA positivity and HDV antibodies(2005) Özekinci T.; Atmaca S.; Akpolat N.; Temiz H.; Arikan E.The objective of this study was to evaluate the correlation between serum hepatitis D -delta- virus (HDV) RNA detection and anti-HDV IgG and IgM antibodies, in the serodiagnosis of delta hepatitis. A total of 153 HBsAg positive sera were screened for the presence of anti-HBc IgM, anti-HDV IgG and anti-HDV IgM by commercial enzyme immunoassays and HDV-RNA by real time polymerase chain reaction (PCR). Of 153 sera, 86 (56.2%) were found positive for HDV antibodies. Although isolated anti-HDV IgG was present in 35 and isolated anti-HDV IgM was present in 11 patients, IgG and IgM were present concurrently in 40 additional patients. HDV-RNA was detected in 21.5% (33/153) of the patients. Four of the 33 HDV-RNA positive patients were positive only for anti-HDV IgG, 8 were positive only for anti-HDV IgM, and 19 were positive for both anti-HDV IgG and IgM antibodies. Twenty seven of 51 (53%) anti-HDV IgM positive patients were also found positive for HDV-RNA, while 27 of 33 (82%) HDV-RNA positive patients exhibited anti-HDV IgM positivity. Increased serum ALT levels were detected approximately in 85% (28/33) of viremic patients. As all of the HDV-RNA positive patients were found negative for anti-HBc IgM, superinfection with delta virus were considered. In conclusion, PCR is a sensitive and useful method for the detection of viremic patients as well as for the monitorization of antiviral therapy, anti-HDV IgM positivity together with increased ALT levels appear to be good markers for the prediction of hepatitis delta viremia, especially in the countries with limited economical sources as Turkey.Öğe Three cases of chronic suppurative otitis media (CSOM) caused by kerstersia gyiorum and a review of the literature(EDIMES Edizioni Medico Scientifiche, 2018) Özcan N.; Saat N.; Baylan M.Y.; Akpolat N.; Atmaca S.; Gül K.New identification techniques such as gene sequencing and mass spectrometry have increased the incidence of novel agents such as Kerstersia gyiorum. As a new member of the Alcaligenaceae family, K. gyiorum was isolated from wounds, respiratory tract, urine specimens and most frequently from chronic suppurative otitis media (CSOM). We isolated three K. gyiorum strains from three CSOM cases over a one-year period. The strains were analyzed by mass spectrometry and identified by Bruker Biotyper 3.1 (Bruker Daltonics, USA). The cases were young patients without chronic diseases and immuno-deficiencies. Two strains were resistant to ciprofloxacin. © 2018, EDIMES Edizioni Medico Scientifiche. All rights reserved.
