Identificación de especies de enterococcus en muestras clínicas y susceptibilidad a agentes antimicrobianos / Identification of enterococcus species from clinical samples and susceptibility to antimicrobial agents

The genus enterococcus has 12 species of which, E faecalis and E faecium are most important in human infections. A progressive resistance to penicillin and ampicillin has been detected in these species. The aim of this work was to identify Enterococcus species isolated in a hospital and to study their antimicrobial susceptibility. We studied 209 Enterococcus species coming from patients admitted to a public hospital. Their susceptibility to penicillin, ampicillin, imipenem, vancomycin, tetracycline, chloramphenicol, ciprofloxacin, gentamycin and streptomycin was determined with the agar dilution technique. Eighty seven percent of species were E faecalis and 7,1 percent were E fecium, other isolated species were E hirae, E casseliflaws, E avium, E solitarius and E faecalis variant. 38 percent of these species were isolated from the urinary tract, 22 percent from the skin and 14 percent from surgical wounds. All E faecalis species were susceptible to penicillin, ampicillin, imipenem and vancomycin; 27,3 percent were susceptible to tetracycline, 54,7 percent to chloramphenicol and 80 percent to ciprofloxacin. Seventy three percent of E faecium species were susceptible to penicillin, 80 percent to ampicillin and 60 percent to imipenem. 62 percent of E faecalis and 42.4 percent of E faecium were resistant to streptomycin. It is concluded that the correct identification of Enterococcus species has therapeutic implications

Sensibilidad de la Neisseria gonorrhoeae de cepas aisladas en pacientes del Hospital San Juan de Dios / Sensitivity of the strains of Neisseria gonorrhoeae isolated in patients of the San Juan de Dios Hospital

Se evalúa la sensibilidad de 28 cepas de Neisseria gonorrhoeae por la técnica de difusión en agar para cuatro antimicrobianos. Los resultados demuestran una alta resistencia a tetraciclina y penicilina con un 71,4% y 17,9% respectivamente. Frente a ciprofloxacina y cefotaxima todas las cepas estudiadas fueron sensibles

Estudio in vivo-in vitro de tabletas de tetraciclina / In vivo-in vitro study of tetracycline tablets

Se realiza la comparación de 3 lotes de tetraciclina tabletas, en dosis única, a través de un ensayo de bloques incompletos distribuidos al azar, aplicada a 6 voluntarios sanos en estado de ayunas, y se obtiene la biodisponibilidad relativa en sangre, así como los pérfiles de disolución de las tabletas. Se logran obtener buenos resultados in vivo-in vitro con las mismas, a fin de que puedan ser aplicados estos resultados como método de control de la calidad de este medicamento