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1.
Rev. peru. med. exp. salud publica ; 22(4): 262-266, oct--dic. 2005. ilus, mapas, tab
Article in Spanish | LILACS, INS-PERU | ID: lil-477941

ABSTRACT

Objetivos: Aislar e identificar las variedades de Cryptococcus neoformans que existen en excretas de palomas, suelo y ambientes aéreos del perímetro urbano de la ciudad de Ica, Perú. Materiales y métodos: Se colectaron muestras de excretas de palomas, suelo contaminado y aire de palomares entre mayo y julio del año 2002. Para el aislamiento primario se usó agar Sabouraud dextrosa con cloramfenicol. Para la identificación por especie se usaronpruebas convencionales y la determinación de la variedad se evaluó sobre el medio de cultivo agar canavaninaglicina azul de bromotimol sódico. Resultados: Se obtuvieron 124 muestras procedentes de palomares de la Facultad de Medicina de la Universidad Nacional San Luis Gonzaga de Ica, capilla del Hospital Socorro, Los viñedos de Santa María, La Victoria y San Joaquín. Se aislaron 26 cepas del género Cryptococcus de las cuales nueve cepas correspondieron a C. neoformans var. neoformans y 17 a Cryptococcus spp. La mayor frecuencia se encontró en la zona del palomar de la Facultad de Medicina. Conclusión: C. neoformans var. neoformans se encuentra en excreta y suelo de las áreas protegidas de los palomares estudiados.


Objectives: To isolate and identify Cryptococcus neoformans varities from pigeon stools, soil and air in the urban area of Ica city, Peru. Materials and methods: Pigeon stool, contaminated soil, and air samples from pigeon houses were collected between May and July 2002. For primary isolation, Sabouraud dextrose agar with chloramphenicol was used. For species identification conventional tests were used, and for varities identification sodium bromothymol blue glycin canavanine agar was used. Results: 124 samples from pigeon houses in San Luis Gonzaga University Medical School, Socorro Hospital Chapel, and Santa Maria, La Victoria, and San Joaquin vineyards were obtained. 26 strains of Cryptococcus genus were isolated. Nine strains were identified as C. neoformans var. neoformans, and 17 were Cryptococcus spp. The fungus was most frequently found in pigeon houses from San Luis Gonzaga University Medical School. Conclusions: C. neoformans var. neoformans is found in stools and in the soil of pigeon houses studied.


Subject(s)
Animals , Columbidae , Cryptococcus neoformans , Peru
2.
Rev. peru. med. exp. salud publica ; 21(2): 71-75, abr.-jun. 2004. tab
Article in Spanish | LILACS, LIPECS, INS-PERU | ID: lil-498590

ABSTRACT

Objetivo: Determinar la presencia de L. monocytogenes en quesos frescos de producción artesanal expendidos en los mercados de Ica durante el periodo enero - marzo de 2003. Material y Métodos: De la totalidad de los puestos que expenden queso fresco artesanal en los mercados Santo Domingo, Alejandro Toledo, San Antonio y Modelo, se evaluaron 74 muestras teniendo como unidad muestral 200 g según la Norma Técnica Peruana ISO 28329-1. El procesamiento, aislamiento e identificación se realizó de acuerdo con la metodología recomendada por el manual de bacteriología analítica de la Food and Drug Administration (FDA). Resultados: De las 74 muestras, 3 (4,05 por ciento)presentaban L. monocytogenes, y de ellas, una muestra correspondió al mercado Alejandro Toledo y 2 muestras al mercado Modelo. Se logró aislar 28 cepas de las cuales 6 (21,4 por ciento)correspondieron a L. monocytogenes, y 22 (78,6 por ciento) a otros microorganismos como Lactococcus lactis ss lactis, Enterococcus spp. y Bacillus spp. No se logró aislar L. monocytogenes en los mercados Santo Domingo y San Antonio; sin embargo, en el mercado Alejandro Toledo se aisló una cepa y en el mercado Modelo, se aislaron 5 cepas, lo cual demuestra la presencia significativa de L. monocytogenes sólo en el mercado Modelo. Conclusiones: Existe L. monocytogenes en quesos frescos de producción artesanal, representando un riesgo potencial para la población consumidora.


Objective: To determine the presence of L. monocytogenes in home made non-pasteurized cheese sold in Ica district markets during the period from January to March, 2003. Material and Methods: 74 samples were assessed from all the vendor places in Santo Domingo, Alejandro Toledo, San Antonio, and Modelo markets, and the sampling unit was 200 g, according to the Peruvian technical Specification ISO 28329-1. Processing, isolation, and identification were performed according the methodology recommended by analytical bacteriology manual edited by the US Food and Drug Administration (FDA). Results: Of the 74 samples, 3 (4.05 percent) had L. monocytogenes, one of them from Alejandro Toledo market and the other two were from Modelo market. Overall, 28 bacterial strains were isolated, 6 (21.4 percent) of them were identified as L. monocytogenes, and 22 (78.6 percent) had other microorganisms, such as Lactococcus ss lactis, Enterococcus spp., and Bacillus spp. No L. monocytogenes strains were isolated from Santo Domingo and San Antonio markets; however, in Alejandro Toledo market one strain was found, and in Modelo market 5 strains were isolated, which proves the significant presence of L. monocytogenes only in Modelo market. Conclusions: There is presence of L. monocytogenes in home made non pasteurized cheese, which represents a potential risk for the consumer population.


Subject(s)
Foodborne Diseases , Listeriosis , Cheese , Epidemiology, Descriptive , Cross-Sectional Studies , Observational Studies as Topic
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