| 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 |
| 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 |
| [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 |
| [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 |
| 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 |