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      • KCI등재후보

        Concurrent Assay for Four Bacterial Species Including Alloiococcus Otitidis in Middle Ear, Nasopharynx and Tonsils of Children with Otitis Media with Effusion: A Preliminary Report

        Emine Aydın,Eren Taştan,,Filiz Aydoğan,,Esra Karakoç,Yunus Kantekin,Münir Demirci,Mihriban Yücel,Necmi Arslan 대한이비인후과학회 2012 Clinical and Experimental Otorhinolaryngology Vol.5 No.2

        Objectives. To detect the prevalences of Alloiococcus otitidis, as well as Haemophilus influenzae, Streptococcus pneumoniae,and Moraxella catarrhalis in children with chronic otitis media with effusion (OME) and to simultaneously investigate the colonization of these bacteria in the nasopharynx and palatine tonsils of these patients. Methods. The study included 34 pediatric patients with OME, and 15 controls without OME. In the study group, A. otitidis,H. influenzae, S. pneumoniae, and M. catarrhalis were investigated in the samples obtained from middle ear effusions (MEE), nasopharyngeal swabs (NPS) and tonsillar swabs (TS), using multiplex polymerase chain reaction (PCR) and conventional culture methods. Only the samples obtained from NPS and TS were studied with the same techniques in the control group. Results. A. otitidis was isolated only in MEE and only with multiplex PCR method. A. otitidis, S. pneumoniae, M. catarrhalis,H. influenzae were identified in 35%, 8.8%, 8.8%, and 2.9%, respectively, in 34 MEE. A. otitidis was not isolated in NPS or TS of the study and the control groups. Conclusion. The prevalence of A.otitidis is high in children with OME and A.otitidis doesn’t colonize in the nasopharynx or tonsil. Objectives. To detect the prevalences of Alloiococcus otitidis, as well as Haemophilus influenzae, Streptococcus pneumoniae,and Moraxella catarrhalis in children with chronic otitis media with effusion (OME) and to simultaneously investigate the colonization of these bacteria in the nasopharynx and palatine tonsils of these patients. Methods. The study included 34 pediatric patients with OME, and 15 controls without OME. In the study group, A. otitidis,H. influenzae, S. pneumoniae, and M. catarrhalis were investigated in the samples obtained from middle ear effusions (MEE), nasopharyngeal swabs (NPS) and tonsillar swabs (TS), using multiplex polymerase chain reaction (PCR) and conventional culture methods. Only the samples obtained from NPS and TS were studied with the same techniques in the control group. Results. A. otitidis was isolated only in MEE and only with multiplex PCR method. A. otitidis, S. pneumoniae, M. catarrhalis,H. influenzae were identified in 35%, 8.8%, 8.8%, and 2.9%, respectively, in 34 MEE. A. otitidis was not isolated in NPS or TS of the study and the control groups. Conclusion. The prevalence of A.otitidis is high in children with OME and A.otitidis doesn’t colonize in the nasopharynx or tonsil.

      • KCI등재후보

        Are Systemic Voriconazole and Caspofungin Ototoxic? An Experimental Study with Rats

        Emine Aydın,Filiz Aydoğan,,Eren Taştan,,Ayşe İriz,Gökhan Karaca,İlknur Haberal Can 대한이비인후과학회 2012 Clinical and Experimental Otorhinolaryngology Vol.5 No.3

        Objectives. To determine whether systemic administration of voriconazole and caspofungin causes ototoxicity. Methods. This study was conducted on 32 healthy male Wistar albino rats. The baseline auditory brainstem response (ABR)thresholds of all animals were obtained under general anesthesia. Then, the rats were randomly divided into 4 groups (groups I-IV), each group consisting of 8 rats. Rats in group I were injected intraperitoneally with voriconazole 10 mg/kg/day for 7 days, and the rats in the group II were injected intraperitoneally with caspofungin 5 mg/kg/day for 7 days. Group III received 120 mg/kg/day gentamicin for 7 days. Group IV received saline for 7 days. The animals were then observed for 7 days, and on 14th day of the trial, posttreatment ABRs of both ears were recorded. Results. We did not find any significant differences between pretreatment and posttreatment median ABR thresholds in the voriconazole, caspofungin, or saline groups. In the gentamicin group, there was a statistically significant difference between pretreatment and posttreatment ABR thresholds. Conclusion. Caspofungin and voriconazole did not change ABR thresholds in speech frequencies after a 7-day-period of their administration. We believe that further animal studies must be performed after administration of these agents for a longer time period, and these findings must be consolidated with histopathological investigations. Objectives. To determine whether systemic administration of voriconazole and caspofungin causes ototoxicity. Methods. This study was conducted on 32 healthy male Wistar albino rats. The baseline auditory brainstem response (ABR)thresholds of all animals were obtained under general anesthesia. Then, the rats were randomly divided into 4 groups (groups I-IV), each group consisting of 8 rats. Rats in group I were injected intraperitoneally with voriconazole 10 mg/kg/day for 7 days, and the rats in the group II were injected intraperitoneally with caspofungin 5 mg/kg/day for 7 days. Group III received 120 mg/kg/day gentamicin for 7 days. Group IV received saline for 7 days. The animals were then observed for 7 days, and on 14th day of the trial, posttreatment ABRs of both ears were recorded. Results. We did not find any significant differences between pretreatment and posttreatment median ABR thresholds in the voriconazole, caspofungin, or saline groups. In the gentamicin group, there was a statistically significant difference between pretreatment and posttreatment ABR thresholds. Conclusion. Caspofungin and voriconazole did not change ABR thresholds in speech frequencies after a 7-day-period of their administration. We believe that further animal studies must be performed after administration of these agents for a longer time period, and these findings must be consolidated with histopathological investigations.

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