Publications
| Title | Abstract | Year Filter | PMID(sorted ascending) Filter |
|---|
| susceptibility of bahian population of biomphalaria glabrata to an allopatric strain of schistosoma mansoni. | seventeen populations of snails (biomphalaria glabrata) from the state of bahia, brazil were studied with respect to their susceptibility to infection with an allopatric strain of schistosoma mansoni. two of the populations were from the city of salvador, 3 from other sites in bahia, and 12 from habitats in the municipio castro alves. our data show that the bahian snail populations are extremely variable in their susceptibility to an allopatric strain of s. mansoni and that the phenomenon is not ... | 1978 | 686244 |
| influence of regional factors in the distribution of the histologic patterns of glomerulopathies in the nephrotic syndrome. | analysis of 47 renal biopsies performed on adult patients with nephrotic syndrome in bahia, brazil, shows a peculiar distribution of the histologic types with a preponderance of membranoproliferative glomerulonephritis. the possibility of a regional influence is discussed, particularly with regard to schistosoma mansoni infection which is endemic in this area and probably an important cause of glomerulopathy. | 1975 | 1153046 |
| intermediate hosts of schistosoma mansoni in brazil. | the brazilian planorbidical chart is slowly but progressively been increased by new data. distribution of vector species of schistosoma mansoni, according to paraense, 1986, may be thus resumed: biomphalaria glabrata--delimited by parallels 13 and 21 degrees s and meridians 39 and 45 degrees w, area of greater dominance (southeast bahia, oriental hal of minas gerais and espírito santo). it is observed along the coast line of the states of sergipe, alagoas, pernambuco, paraiba and rio grande do n ... | 1992 | 1343914 |
| geographical and socioeconomic factors relating to the distribution of schistosoma mansoni infection in an urban area of north-east brazil. | a study was carried out in santo antonio de jesus, a town in bahia state, north-east brazil, to determine the relationship between various biological, socioeconomic, behavioural, and geographical factors and the prevalence and intensity of schistosoma mansoni infection. the town's population was around 45,000 and the study was targeted at all children born in 1970-71 who were living in the town at the time of the survey (august-november 1984). an extensive questionnaire was used to collect infor ... | 1991 | 1905208 |
| [natural infection of wild rodents by schistosoma mansoni]. | in planalto, a small locality in the interior of the bahia state, brazil, 47% of sylvatic rodents were found to be naturally infected with schistosoma mansoni, whereas the prevalence of the infection in the inhabitants of the area was 3.26%. the rodents (nectomys) live near the houses, in contact with water, passing viable schistosome eggs in the stools. worm burden is variable amongst such rodents. periovular granulomas are small, especially in liver and intestines, and hepatic fibrosis is mild ... | 1989 | 2517565 |
| [inbreeding coefficient in carriers of schistosoma mansoni]. | the coefficient of inbreeding (for wright) was studied in catolândia, in the state of bahia, brazil, an area considered hyperendemic for manson schistosomiasis in a population of 1,130 inhabitants. the coefficient of inbreeding was estimated for 1,123 individuals it was classified as f greater than 0 in 13.2% (n = 148). in the hepatosplenic group the frequency of f greater than 0 was 26.8%, and in the hepatointestinal group the frequency was 12.5%. the frequency of the hepatosplenic diagnosis in ... | 1989 | 2517803 |
| the effect of schistosoma mansoni infection on child morbidity in the state of bahia, brazil. ii--analysis at the individual level. | 1985 | 3938563 | |
| the effect of schistosoma mansoni infection on child morbidity in the state of bahia, brazil. i--analysis at the ecological level. | 1984 | 6522954 | |
| a three year follow-up of chemotherapy with oxamniquine in a brazilian community with endemic schistosomiasis mansoni. | oral oxamniquine was tested as a control strategy for endemic schistosomiasis in a rural area of bahia, brazil. adults were treated with a single dose (12.5 to 15 mg per kg) and children (less than 12 years old) with a total of 20 mg per kg in two doses. the 191 (infected) persons treated represented 69% of the infected population in the study area. follow-up stool examinations (kato-katz method) at one, 3, 6, 13, 25 and 33 months showed the cure rate declining from 80% at three months to 46% at ... | 1981 | 7303137 |
| expression of epstein-barr virus-gene products in burkitt's lymphoma in northeast brazil. | the epstein-barr virus (ebv) is consistently found in tumor cells of burkitt's lymphoma (bl) endemic in central africa and malaria is considered a pathogenic cofactor. in contrast, fewer than 20% of bl cases occurring in western countries are ebv-associated. we have investigated 54 bl cases from bahia, a tropical region of northeast brazil, for expression of ebv gene products by in situ hybridization and immunohistology and performed typing of the ebv by polymerase chain reaction. ten pediatric ... | 1996 | 8652843 |
| geographic information systems and the environmental risk of schistosomiasis in bahia, brazil. | a geographic information system was constructed using maps of regional environmental features, schistosoma mansoni prevalence in 30 representative municipalities, and snail distribution in bahia, brazil to study the spatial and temporal dynamics of infection and to identify environmental factors that influence the distribution of schistosomiasis. results indicate that population density and the duration of annual dry period are the most important determinants of prevalence of schistosomiasis in ... | 1999 | 10348229 |
| use of thermal and vegetation index data from earth observing satellites to evaluate the risk of schistosomiasis in bahia, brazil. | a geographic information system (gis) was constructed using maps of regional agroclimatic features, vegetation indices and earth surface temperature data from environmental satellites, together with schistosoma mansoni prevalence records from 270 municipalities including snail host distributions in bahia, brazil to study the spatial and temporal dynamics of infection and to identify environmental factors that influence the distribution of schistosomiasis. in an initial analysis, population densi ... | 2001 | 11378144 |
| [macro-epidemiologic aspects of schistosomiasis mansoni: analysis of the impacts of irrigation systems on the spatial profile of the endemic in bahia, brazil]. | studies in african countries have shown an association between irrigation projects and the spread of schistosomiasis mansoni and haematobium. the aim of this study was to investigate the potential association between irrigation levels and the occurrence and spread of schistosoma mansoni infection in the state of bahia. two forms of irrigation were developed in the state of bahia: the first is capital-intensive and mechanized, requiring little manual labor. the second is labor-intensive and chara ... | 2003 | 12764454 |
| [schistosomiasis in hyperendemic area of taquarendi: i- schistosoma mansoni infection and severe clinical forms]. | the study was carried out in taquarendi (bahia), a caatinga zone with a small irrigated strip of land, where biomphalaria glabrata snails are found. from the 1,532 inhabitants, 1,105 (72.1%) were submitted to clinical examination and 1058 out of them (95.7%) made stool examinations. prevalence of schistosomiasis was 73.1% and 16.2% of these patients eliminated more than 1,000 eggs per gram of stool. by clinical examination, the size and the consistency of the left liver lobe were increased in 54 ... | 2003 | 12806456 |
| [risk factors for iron-deficiency anemia in children and adolescents with intestinal helminthic infections]. | to investigate risk factors for iron-deficiency anemia in children and adolescents (7 to 17 years of age) with intestinal helminthic infections. | 2003 | 14769159 |
| childhood stunting in northeast brazil: the role of schistosoma mansoni infection and inadequate dietary intake. | to evaluate the relationship between stunting, schistosoma mansoni infection and dietary intake in schoolchildren. | 2004 | 15220944 |
| molecular identification of symbionts from the pulmonate snail biomphalaria glabrata in brazil. | the icthyosporean, capsaspora owczarzaki, a known predator of schistosoma mansoni sporocysts in vitro, is more prevalent in laboratory-reared strains of the intermediate snail host, biomphalaria glabrata resistant to s. mansoni, than from the susceptible m line strain. we examined whether b. glabrata resistant to the nih-pr-1 strain of s. mansoni from 2 regions in brazil were also host to c. owczarzaki. symbiont presence was examined using hemolymph culturing and nested polymerase chain reaction ... | 2004 | 15357065 |
| [urban transmission of schistosomiasis in children from a neighborhood of salvador, bahia]. | in the subúrbio ferroviário region of salvador (bahia, brasil) occurrences of schistosomiasis were found. this fact motivated the investigation of the prevalence of the eggs in a group of 268 resident students in one of its neighborhoods (são bartolomeu). the parasitological test analyzed by the kato-katz methodology, showed positive results in 30.2% of the children, ranging from 24 to 2,160 eggsschistosoma mansoni/gram of feces. infection was predominant in boys and in those 10 years old and ov ... | 2006 | 17160322 |
| the relative influence of polyparasitism, environment, and host factors on schistosome infection. | where prevalence of geohelminths and schistosomes is high, co-infections with multiple parasite species are common. previous studies have shown that the presence of geohelminths either promotes or is a marker for greater prevalence and intensity of schistosoma mansoni infections. some of this apparent synergy may simply represent shared conditions for exposure, such as poor sanitation, and may not suggest a direct biologic interaction. we explored this question in a study of 13,279 school childr ... | 2007 | 17978069 |
| high heritability but uncertain mode of inheritance for total serum ige level and schistosoma mansoni infection intensity in a schistosomiasis-endemic brazilian population. | evidence of genetic control for total serum ige (tige) level has been reported in multiple populations, although populations with substantial exposure to helminths have yielded lower estimates of heritability, despite evidence suggesting that genes also control a significant portion of the variation in the number of schistosoma mansoni eggs per gram of fecal matter. | 2008 | 18717640 |
| schistosomamansoni population structure and persistence after praziquantel treatment in two villages of bahia, brazil. | praziquantel has been used to treat schistosome infections since 1979 and currently is the only chemotherapeutic agent in production for this purpose, raising concerns about the potential for the emergence of drug resistance. in practice, 10-20% of infected patients will continue to excrete eggs after treatment. it is not understood to what degree this represents selection of a resistant population or incomplete elimination due to the presence of immature worms at the time of treatment. we used ... | 2011 | 21784077 |
| factors associated with resistance to schistosoma mansoni infection in an endemic area of bahia, brazil. | detailed knowledge of factors associated with resistance to schistosoma mansoni infection in endemic areas might facilitate more effective schistosomiasis control. we conducted a cross-sectional study of persons resistant to schistosomiasis and found no association between socioeconomic status and resistance to infection. mononuclear cells of resistant subjects produced higher levels of interleukin-5 (il-5), il-13 and interferon-γ upon stimulation with soluble egg antigen (sea) compared with inf ... | 2012 | 22302866 |
| adult worm-specific ige/igg4 balance is associated with low infection levels of schistosoma mansoni in an endemic area. | field studies have suggested an immune-mediated mechanism associated with resistance to schistosoma mansoni infection. overall, levels of specific ige have been correlated with resistance to infection, whereas levels of igg4 have been associated with susceptibility. this study aimed to evaluate serum levels of soluble adult worm antigen preparation (swap)-specific ige and igg4 in relation to current infection in a large casuistic of individuals living in an endemic area of schistosomiasis in bah ... | 2012 | 22861127 |
| the relative contribution of immigration or local increase for persistence of urban schistosomiasis in salvador, bahia, brazil. | urbanization is increasing across the globe, and diseases once considered rural can now be found in urban areas due to the migration of populations from rural endemic areas, local transmission within the city, or a combination of factors. we investigated the epidemiologic characteristics of urban immigrants and natives living in a neighborhood of salvador, brazil where there is a focus of transmission of schistosoma mansoni. in a cross-sectional study, all inhabitants from 3 sections of the comm ... | 2015 | 25775457 |