Publications

the tropical brown alga lobophora variegata: a source of antiprotozoal compounds.	lobophora variegata, a brown alga collected from the coast of the yucatan peninsula, mexico, was studied for antiprotozoal activity against giardia intestinalis, entamoeba histolytica and trichomonas vaginalis. the whole extract showed the highest activity against t. vaginalis, with an ic(50) value of 3.2 microg/ml. for the fractions, the best antiprotozoal activity was found in non-polar fractions. the chloroform fraction of the extract contained a major sulfoquinovosyldiacylglycerol (sqdg), id ...	2010	20479979
seroepidemiology of amebiasis in mexico.	the presence of serum antibodies to entamoeba histolytica was detected by indirect hemagglutination in a representative sample of the 32 federal entities of the mexican republic. this study was designed to include biologic, geographic, social, economic, and educational variables. the total percentage of positive sera was 8.41%. seroprevalence varied with geographic zones, with the south central, south pacific, and yucatan peninsula areas showing the highest values (> or = 9%), and the north, nor ...	1994	8166347
[prevalence of enteropathogens in children with liquid diarrhea].	between january 1 and october 31, 1991 148 samples of feces corresponding to the same number of children with acute diarrhea, aged 0-2 years, admitted to hospital o'horan of the secretariat of health in the city of merida, yucatan, mexico, were studied. stools from 105 (70.9%) patients were described as watery diarrhea; from these samples at least one enteric pathogen was detected in 49 (46.6%): a single pathogen was isolated in 37 (35.2%), and mixed infections were observed in 12 (11.4%). we is ...	1993	8066329
the epidemiology of entamoeba histolytica in a rural and an urban area of mexico. a pilot survey ii.	stocks of intestinal amoebae grown in monoxenic culture, were compared against each other and against those previously reported from mexico city. these were isolated from subjects in san cristobal de las casas, chiapas (rural area) and hospital patients in merida, yucatan (urban area). electrophoretic patterns of the four enzymes: glucose phosphate isomerase (gpi), phosphoglucomutase (pgm), l-malate: nadp+ oxido-reductase (oxalacetate-decarboxylating) (me) and hexokinase (hk) demonstrated the pr ...	1982	6285556