Publications

allergic reactivity and socio-economic level in a tropical environment.	as some factors associated with the tropical environment can modify the expression of atopic disease, various indicators of allergic reactivity were compared between allergic and non-allergic subjects of different socio-economic level in caracas, venezuela (lat. 10 degrees n). the socio-economic levels considered were high (hsel), medium-high (msel) or low (lsel). as generally found in temperature climates, in the hsel the total serum ige levels of allergic patients were significantly greater th ...	1987	3608138
comparable seropositivity for ascariasis and toxocariasis in tropical slum children.	the seropositivities for infection by ascaris lumbricoides and toxocara canis were determined in children (1-15 years old) of a slum area of caracas, venezuela, and the levels that indicate the presence of active infection were defined. in children aged from 1 to 3 years, approximately 10% were positive for either parasite, and this figure increased to about 30% in 4- to 6-year-olds. for toxocariasis, the percentage of positivity remained at this level up to the age of 15 years. whilst the posit ...	1993	8278336
modulation of the allergic reactivity of slum children by helminthic infection.	infection by helminthic parasites can cause the polyclonal stimulation of ige synthesis, possibly via an enhanced production of interleukin-4 (il-4), and this has been suggested to influence the allergic reactivity of tropical populations where these parasites are endemic. we evaluated a group of urban slum children in caracas, venezuela, with a high prevalence of helminthic infection (70.8%), to establish the relationship between the elevated ige levels (3696 iu/ml) induced by these parasites a ...	1993	8361773
ascaris reinfection of slum children: relation with the ige response.	total and ascaris-specific serum ige levels were measured in a group of 98 ascaris-infected children from a slum area of caracas, venezuela, in whom the infections were eliminated by regular treatment for 22 months with the anthelmint oxantel/pyrantel ('quantrel'). the children were re-evaluated at the end of the treatment programme, and then 8 months later, at which time reinfection was assessed. total ige levels at the beginning of the study were significantly higher in the children who became ...	1993	8403522
relationship between the degree of poverty and the ige response to ascaris infection in slum children.	we examined a group of urban slum children in caracas, venezuela, and demonstrated the relationship that exists between poverty, conditions of hygiene and the prevalence of helminth infection. concordant with the high prevalence of helminth infection in these children, the total serum levels of immunoglobulin e (ige) and blood eosinophilia were elevated and were directly related to the degree of poverty and lack of sanitary facilities. however, in contrast, the reverse pattern was observed for t ...	1993	8465384
helminthic infection and anthropometric indicators in children from a tropical slum: ascaris reinfection after anthelmintic treatment.	we evaluated helminthic infection and anthropometric indicators of nutritional status in a group of school-age children from a slum area of caracas, venezuela. the proportions of children at or below the 10th percentiles for height/age and weight/age were significantly higher in those presenting helminthiasis than in those uninfected. although this could partially reflect a codependence of both helminthic infection and undernutrition or poverty, when the children were administered regular anthel ...	1999	10467832
[influence of helminthic infections and nutritional status on immune response in venezuelan children].	we investigated the influence of nutritional status, as determined from anthropometric measurement, and of helminthic infections on the immune response of children of low socioeconomic status in two rural communities in venezuela: el cardón in the state of nueva esparta and san daniel in the state of miranda. a total of 125 boys and girls between 2 and 15 years old participated in the study. their socioeconomic stratum was determined by a modified graffar method. a physical examination was perfo ...	2000	11036425