Identification of Enterococcus faecalis by PCR in saliva of pediatric patients / Identificação do Enterococcus faecalis por PCR em saliva de pacientes pediátricos

This study aimed to identify E. faecalis in saliva of patients that were divided into two groups: 10 patients with caries lesions and 10 caries-free patients. Material and methods: Saliva samples were collected with a sterile swab and inoculated in enterococcosel media for 48 hours. The positive samples were subcultured in broth agar - blood medium for storage and subsequent PCR analysis. The data were analyzed using the SPSS (÷2). Results: From the 20 cases included in the study, 3 were positive in the Enterococcosel medium, and both tests (culture and PCR) used confirmed that three of them belonged to the species E. faecalis. No samples were positive in Enterococcosel broth in the group of caries-free patients. From the three samples that were identified as Enterococcus in broth (positive bile esculin test), an amplified for E. faecalis PCR analysis (p > 0.005). Conclusion: Through the use of PCR, it was possible to identify the genus Enterococcus and the species E. faecalis in saliva of patients with carious lesions – the pathogen that may influence the prognosis of diseases of the oral cavity...

Este estudo objetivou identificar E. faecalis em saliva de pacientes que foram divididos em dois grupos: 10 pacientes com lesões de cárie e 10 livres de cárie. Material e métodos: Amostras de saliva foram coletadas com um swab estéril e inoculadas em meios Enterococcosel por 48 horas. As amostras positivas foram repicadas em meio de caldo de agar - sangue para armazenamento e análise de PCR subsequente. Os dados foram analisados utilizando o SPSS. Resultados: Dos 20 casos incluídos no estudo, três foram positivos no médio Enterococcosel e ambos os testes (cultura e PCR) utilizados confirmaram que três deles pertenciam à espécie E. faecalis. Nenhuma amostra foi positiva em caldo Enterococcosel no grupo de pacientes livres de cáries. A partir das três amostras que foram identificadas como Enterococcus em caldo (teste positivo esculina biliar), foram amplificados por análise de PCR para o E. faecalis (p>0.005). Conclusão: Através da utilização de PCR, foi possível identificar gênero Enterococcus e a espécie de E. faecalis em saliva de pacientes com lesões de cárie – o agente patogênico que pode influenciar o prognóstico de doenças da cavidade oral...

Evaluation of the antimicrobial activity of sparfloxacin, relative to other oral antibiotics against 1,125 bacterial isolates from 10 medical centers in Brazil

A multicenter study was carried out in order to compare the in vitro activity of sparfloxacin, to ciprofloxacin, amoxicillin/clavulanic acid, cephalexin, cefuroxine and azithromycin, against 1,125 microorganisms recently isolated from clinical specimens, most of them representative of respiratory tract infections. Sparfloxacin demonstrated potent action and was more active than the ß-lactan agents and azithromycin against most of the bacterial strains tested. Sparfloxacin was more potent (96 percent and 95 percent sensitivity, with MIC90 of 0.19µg/mL and 0.5µg/mL, respectively) than the order antimicrobial agents tested against the Enterobacteriaceae family (Escherichia coli and Klebsiella pneumoniae). It was found to be equivalent in activity to ciprofloxacin (96 percent and 91 percent sensitivity and MIC90 of o.25 and 0.75µg/mL, respectively). Sparfloxacin was also found to be very active against the most fastidious microorganisms commonly associated to respiratory tract infections such as the penicillin-susceptible and resistant Haemophilus influenzae (MIC90 0.032µg/mL) and non ß-lactamase producing Moraxella catarrhalis (MIC90 0.5µg/mL).