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1.
Rev. cuba. invest. bioméd ; 24(2)abr.-jun. 2005. ilus, graf
Article in Spanish | LILACS | ID: lil-418805

ABSTRACT

Se realizó la identificación por primera vez en Cuba de diferentes aislamientos de Gardnerella vaginalis con diferencias en el patrón bioquímico, los cuales estaban asociados o no a la presencia de síntomas de vaginosis bacteriana. Se han descrito variaciones fenotípicas de Gardnerella vaginalis relacionadas con pruebas bioquímicas que han permitido clasificar esta especie en diferentes biotipos, los cuales en algunos casos están asociados a vaginosis bacteriana o no. El biotipo 1 resultó el más común, para el cual la hidrólisis del hipurato, la actividad b galactosidasa y lipasa fueron positivas. Se obtuvieron antisueros en conejo a 2 cepas de Gardnerella vaginalis correspondientes a los biotipos 1 y 4, los cuales mostraron un comportamiento diferente por immunoblotting frente a aislamientos correspondientes a diferentes biotipos; esto sugiere la posibilidad de una diferenciación serológica entre aislamientos de Gardnerella vaginalis


Subject(s)
Animals , Rabbits , Bacterial Infections , Gardnerella vaginalis , Vaginosis, Bacterial
2.
Rev. cuba. med. trop ; 55(2)mayo.-ago. 2003. ilus, tab
Article in Spanish | LILACS | ID: lil-386988

ABSTRACT

Se evaluaron 3 medios de cultivo líquidos caldo triptosa soya suplementado con suero equino (CTS-se) / sin suplemento (CTS) y caldo Casman (CC) en diferentes condiciones de incubación: 10 por ciento de CO2 y en condiciones aerobias. No hubo diferencias significativas en los valores de densidad óptica para los medios CTS-se y CC. Sin embargo, al establecer el perfil de proteínas por PAGE- SDS para las condiciones evaluadas, la presencia de la proteína de 14 kDa y los valores de densidad óptica permitieron la selección del medio CC para el cultivo de Gardnerella vaginalis. Se estudió la sensibilidad a diferentes pH en este medio, resultó óptimo el pH 7,2 y se estableció la cinética de crecimiento. El análisis por PAGE-SDS de las células completas correspondientes a diferentes aislamientos clínicos de G. vaginalis con variaciones bioquímicas permitió caracterizar el perfil de proteínas en este medio y mostró similitud entre los aislados


Subject(s)
Culture Media , Electrophoresis, Polyacrylamide Gel , Gardnerella vaginalis , Vaginosis, Bacterial
3.
Rev. cuba. med. trop ; 52(3): 186-190, Sept.-Dec. 2000.
Article in Spanish | LILACS | ID: lil-333473

ABSTRACT

A culture media containing peptone, glucose, yeast extract and serum was evaluated to promote the development of the mycelium formation in Candida albicans and it was compared with the commercial media Tc 199. No significant difference was found between them. Somatic antigens characterized by PAGE-SDS were obtained from yeast and mycelial forms. Proteins reported as having high diagnostic value were expressed in both antigens. It was determined by immunotransference that the antigenic proteins predominating in the mycelium formation had molecular weights of 19, 21, 27 and 57 Kda. The immunotransference was standardized for detecting antibodies in patients with systemic candidiasis. 24 positive sera were evaluated by this technique and it was compared with the ELISA technique, which proved to be more sensitive and less specific. The most recognized proteins were those of 136 and 21 Kda and the complex from 42 to 45 Kda.


Subject(s)
Animals , Humans , Rabbits , Antigens, Fungal/analysis , Candida albicans , Candidiasis/diagnosis , Candidiasis/blood , Immunoenzyme Techniques
4.
Rev. cuba. med. trop ; 52(2): 101-105, May-Aug. 2000.
Article in Spanish | LILACS | ID: lil-333489

ABSTRACT

To obtain an anti-Gadnerella vaginalis latex globulin, specific immunosera to reference strain (ATCC 14018) and to a clinical isolation strain pool were produced. These immunosera were characterized using PAGE-SDS and immunoblotting where a close antigenic relation between the clinical isolation strains and the reference strain was observed. The latex globulin conjugates obtained from these 2 immunosera were evaluated in vitro with a resulting level of detection of 10 ufc/mL of Gardnerella vaginalis. These two conjugates were also evaluated in clinical samples and compared with the 6 vaginalis culture and the criteria considered for diagnosing bacterial vaginosis. The anti-strain pool (II) latex globulin conjugate turned out to be more sensitive and specific than anti-G. vaginalis ATCC strain (I) latex globulin.


Subject(s)
Animals , Female , Humans , Gardnerella vaginalis , Immunoglobulins , Latex , Vaginosis, Bacterial , Antigens, Bacterial/analysis , Antigens, Bacterial/immunology , Electrophoresis, Polyacrylamide Gel , Immune Sera , Immunoblotting , Immunoglobulins , Immunization/methods , Sheep , Latex Fixation Tests/methods
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