Browsing by Author "Metin D.Y."

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    Onychomycosis in primary school children: Association with socioeconomic conditions
    (2006) Gunduz T.; Metin D.Y.; Sacar T.; Hilmioglu S.; Baydur H.; Inci R.; Tümbay E.
    Onychomycosis in childhood is reported to be unusual. The aim of this study was to determine the prevalence of onychomycosis in primary school children and to make comparison between different socioeconomic status in the rural and urban areas of the city. Hand and foot nails of 23235 children aged 7-14 were examined. Onychomycosis was suspected and nail scrapings for mycological examination were taken in 116 of them. Hyphae or spores were seen in 41 (0.18%) by direct microscopic examination, and mycological cultures were positive in 24 (0.1%) of them. Toenails were affected in all of the fungal culture positive cases. Trichosporon spp, Trichophyton rubrum, Candida albicans and Candida glabrata grew in 11, 6, 5 and 2 of the cultures repectively. Onychomycosis prevalence was significantly higher in the children living in the rural areas (p = 0.016) [Odds ratio = 3.43 (%95 CI 1.11
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    Molecular typing of adenoviruses isolated from clinical specimens by pcr and dna sequencing methods; [Klinik ömeiklerden izole edilen adenoviruslarin pcr ve dna dizi analizi yöntemiyle tiplendirilmesi]
    (2012) Çiçek C.; Şanlidaĝ T.; Akçau S.; Sayan M.; Yalaz M.; Metin D.Y.
    Adenoviruses are responsible for a broad spectrum of diseases, including upper and lower respiratory tract infections (UI^TIs and LRTIs, respectively), conjunctivitis, gastroenteritis, and hemorrhagic cystitis. The aim of this study was to determine the adenovirus (AdV) types isolated from clinical specimens by polymerase chain reaction (PCR) and DNA sequencing methods. A total of 22 AdV strains isolated between January 1 2011 to May 31 2011, from various samples (295 nasopharyngeal swabs, 42 conjunctival swabs, 13 stool) sent to our routine virology laboratory were included in the study. Of the 22 patients whose samples yielded adenovirus positivity, 8 were adult (4 were male; median age: 32.5 years) and 14 (7 were male; median age: 1 year) were children. Those specimens (14 nasopharyngeal swabs, 7 conjunctival swabs, 1 stool) were obtained from patients with URTIs (n= 6), LRTIs (n= 8), conjunctivitis (n= 7) and gastroenteritis (n= 1). For the isolation and identification of adenoviruses, rapid (shell vial) cell culture and direct immunofluorescence antibody methods were used, respectively. Molecular typing of adenoviruses were performed by PCR and sequencing of a partial region (hipervariable region 1 -6) of the hexon gene. PCR primers (Adhex FI, Adhex R1) used for DNA amplification were from those described by Lu and Erdman, previously. If insufficient DNA was amplified from the first reaction for sequencing, a nested PCR was performed using Adhex F2 and Adhex R2 primers. Sequencing was performed using the amplification primers and Sequence Reagent Mix-DYEnamic ET Terminator Cycle Sequencing Kit (Amersham Pharmacia Biotech Inc, USA) on ABI PRISM 310 Genetic Analyzer (Applied Biosystems, USA). Obtained adenovirus sequences were typed by BLAST analysis and three AdV types namely type 3, 4, and 8 were identified. In our study, AdV type 3 was detected in a gastroenteritis case and six cases with URTIs and LRTIs (n= 7, 31.8%). AdV type 8 was identified as the cause of conjunctivitis in seven patients and of URTIs and LRTIs in five patients (n= 12, 54.5%). AdV type 4 was found to be associated with URTI in one, and LRTIs in two patients (n= 3; 13.7%). Our data indicated that AdV type 8 was the most prevalent type in patients with conjunctivitis and URTIs, while AdV type 3 was the most prevalent type in patients with LRTI. BLAST analysis was thought to be useful for the molecular typing of adenoviruses. In conclusion, advanced studies with large number of specimens are necessary to achive a reliable, detailed national adenovirus database.
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    Evaluation of patients with zygomycosis
    (Turkiye Klinikleri Journal of Medical Sciences, 2014) Kaya O.; Alp Çavuş S.; Turhan Ö.; Işikgöz Taşbakan M.; Pullukçu H.; Ertuǧrul M.B.; Şenol Ş.; Çetin Ç.B.; Özhak Baysan B.; Sayin Kutlu S.; Metin D.Y.; Avci M.; Mermut G.; Avkan Oǧuz V.; Yapar N.
    Aim: Zygomycosis is a severe angioinvasive infection caused by Zygomycetes. We retrospectively investigated 16 cases of zygomycosis. Materials and methods: The data of patients, who had been followed between 2004 and 2010 in 8 tertiary-care teaching hospitals, were reviewed. Demographic characteristics, underlying diseases, and clinical signs and symptoms of the patients, as well as diagnostic methods, data obtained by radiological imaging methods, and the therapies, were recorded. Therapeutic approaches, antifungal agents and duration of use, and the characteristics of the cases were identified. Results: The study included 11 female and 5 male subjects. The most common symptoms and clinical signs were fever (n = 9) and retro-orbital pain (n = 7). Rhinocerebral zygomycosis was the most common form. The mean time elapsed for diagnosis was 14.26 ± 13.96 (range: 2-52) days. Antifungal therapy was given to 15 patients (94%). In addition to antifungal therapy, 12 patients underwent surgical intervention 1 to 4 times. The mean duration of receiving antifungal therapy was 61.4 ± 58.02 (range: 1-180) days. The median duration of treatment was 62.5 (range: 42-180) days in survivors. Conclusion: Zygomycosis is an infectious disease with high mortality despite antifungal therapy and surgical interventions. © TÜBİTAK.