Mehmet Baysallar

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Some cases of late-onset (regressive) autism may involve abnormal flora because oral vancomycin, which is poorly absorbed, may lead to significant improvement in these children. Fecal flora of children with regressive autism was compared with that of control children, and clostridial counts were higher. The number of clostridial species found in the stools(More)
Propolis is an agent having antimicrobial properties, however, its composition can vary depending on the area where it is collected. In the present study, the antimicrobial activity of five propolis samples, collected from four different regions in Turkey and from Brazil, against nine anaerobic strains was evaluated. Ethanol extracts of propolis (EEP) were(More)
OBJECTIVE This study aimed to test the hypothesis that aggressive dentin removal through greater-tapered instrumentation reduces the intracanal bacteria more effectively than conservative dimension instrumentation. MATERIAL AND METHODS Twenty extracted human lower premolar teeth were used. After extirpation of the pulps, the teeth were autoclaved and(More)
Macrolide resistance in group A beta hemolytic streptococci (GABHS) have been reported with increasing frequency from various geographic regions in the world, and for the respective treatment alternatives and epidemiologic studies, macrolide resistance rates and phenotypes have been determined. In this study erythromycin, clarithromycin and azithromycin(More)
The purpose of this study was to describe a patient, 7-month-old child with ventriculoperitoneal shunts for hydrocephalus with ventriculitis caused by vancomycin-resistant Enterococcus faecium. Two ventriculoperitoneal shunts were inserted just after birth and on the second month. On the sixth month, both shunts were removed because of dysfunction, and(More)
Dear Editor Resistance to broad-spectrum antimicrobials is a well-known challenge in treating Enterobacteriaceae infection worldwide. Carbapenems are an important class of antimicrobials used in treatment against these organisms, although increasing resistance to carbapenems has been reported among Enterobacteriaceae [1]. The production of OXA-48 was first(More)
Carbapenems are the choice of treatment in infections caused by multidrug resistant Enterobacteriaceae. In recent years carbapenem-resistant Enterobacteriaceae isolates due to carbapenemases have been increasingly reported worldwide. Multicenter studies on carbapenemases are scarce in Turkey. The aim of this study was to determine the distribution of(More)
The aim of this study was to determine the in vitro antimicrobial activity of recently licensed quinupristin/dalfopristin and linezolid which have not yet been in clinical use in Turkey against methicillin-resistant Staphylococcus aureus (MRSA) and vancomycin-resistant enterococci (VRE) strains isolated from various clinical specimens by using the Etest.(More)
Irnipenem was supplied in powder form by Merck Sharp and Dohme (USA), and a stock solution was prepared in accordance with NCCLS recommendations (3). One hundred nosocomial Pseudornonas aeruginosa strains collected from different clinical sites during the first six months of 1992 and 1994 were obtained from bacteriology laboratories (Department of(More)