Felicia Villarroel

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OBJECTIVES Lipoteichoic acid (LTA), induces some of the clinical symptoms of Behçet's disease (BD) in a rat animal model. These results led to the hypothesis that LTA may also trigger BD in humans. We investigated the humoral and cellular immune response against LTA and lipopolysaccharide (LPS) in patients with BD, and compared these responses with those of(More)
A series of already published and unpublished seroepidemiological surveys for toxoplasmosis, carried out in Chile in 1982-1994, is reviewed, expanded and analyzed. The surveys included 76,317 apparently healthy individuals of different ages (0.57% of the country's total population), from 309 urban and rural-periurban localities. Urban groups were integrated(More)
Chile is a long and narrow country located in the south western coast of South America. Chagas' disease exists in the seven first (18 degrees 30'-34 degrees 36' South lat.) of the total of thirteen administrative regions of the country. In the 1982-1990 period a series of studies considering different epidemiological aspects of this parasitic zoonosis has(More)
Triatoma spinolai is a wild species of triatomine existing exclusively in Chile, with scarce epidemiological importance in the transmission of Trypanosoma cruzi to man. It has been found in environments from 3000 meters down to the sea level. Exceptionally it has been found in human dwellings. In order to clarify the possibility of an adaptation of T.(More)
A panoramic sight of epidemiological, clinical and experimental studies, referring to Loxosceles laeta and loxoscelism, carried out in 1955-1988, in Santiago, Chile is presented. Two-hundred and sixteen cases of loxoscelism were studied. The most relevant features were: 84.3% corresponded to cutaneous loxoscelism (CL) and 15.7% to viscerocutaneous(More)
Relations were developed for clearance under both intermittent and continuous flow peritoneal dialysis. The theoretical prediction was compared with data from other investigators. A mass transfer characteristic of 52 ml/min per 1.85 liters of dialysate was determined for urea from Boen's single batch experiment. This number was used to calculate the value(More)