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At least 127 records · Page 7Linked to original sources
PubMed1958

Non-human vertebrate hosts of Schistosoma haematobium and Schistosoma mansoni.

The author reviews the results of experimental infections of various species of mammals, other than man, with S. haematobium and S. mansoni, and discusses investigations in Africa and Brazil into the possibility of the natural infection of non-human vertebrates with these two parasites. Only a few species, besides monkeys, could be easily infected with S. haematobium in the laboratory, while-outside man-natural infection with this parasite appears to be practically non-existent. On the other hand, many animals are good experimental hosts for S. mansoni, and at least 21 species of mammals have been found infected with this parasite in Africa and America. It is thus possible to state, provisionally, that man is the only reservoir of S. haematobium, but the question still remains open where S. mansoni is concerned. Further research is suggested in order to assess the importance of non-human reservoirs in the epidemiology of bilharziasis.

Africa↗
PubMed1991

A preliminary examination of the major integral membrane protein antigens of Schistosoma japonicum and Schistosoma mansoni adult worms for glycosyl-phosphatidylinositol membrane anchors.

Integral membrane protein (IMP) antigens isolated from S. japonicum and S. mansoni adult worms using Triton X-114 phase partitioning were treated with phosphatidylinositol-specific phospholipase C (piPLC). Following piPLC treatment, only one IMP antigen of 58 kDa from each species was released from the hydrophobic fraction and remained soluble in the absence of detergent. An additional 23 kDa antigen was identified following piPLC treatment of S. japonicum IMP's. This molecule has been previously characterized as an important species specific immunodiagnostic antigen. Alkaline phosphatase activity was observed in both the detergent and aqueous phases following treatment with piPLC but only in the hydrophobic fraction of the controls. These data suggest that only a small number of IMP antigens from both S. japonicum and S. mansoni adult worms possess glycosyl-phosphatidylinositol (GPI) lipid membrane anchors in a form which can be hydrolysed by a heterologous piPLC.

Animals↗
PubMed1979

Delayed hypersensitivity to specific antigen and hetrologous PPD antigen in patients infected with Schistosoma mansoni and/or Schistosoma haematobium.

181 cases with schistosomiasis were skin tested with S. mansoni antigen and tuberculin (PPD) after complete clinical and parasitological examination. Their results were compared to a control group of 89 non bilharzial cases. The positivity of tuberculin reaction was found to be less frequent in schistosomiasis (37.5%) when compared to non schisto. controls (55.0%). This low reactivity was more manifest in the advanced stages of the disease. The delayed skin reaction with S. mansoni antigen was seen in 52.4% of schisto. cases while non of the control showed any positivity. There are more delayed skin test positives with the advance of the disease.

Adolescent↗
PubMedDate not supplied

[Comparative study of the value of Schistosoma mansoni and Schistosoma haematobium antigens in the indirect immunofluorescent reaction applied to the diagnosis of rectal S. intercalatum bilharziasis].

A comparative study of the value of antigenic sections of S. mansoni and S. haematobium in indirect immunofluorescence applied to the diagnosis of S. intercalatum rectal bilharziosis (in 66 cases) shows that far better results are obtained with S. haematobium antigen (83,3 0/0 positive reactions with higher titers dilution) than with S. mansoni (33,3 0/0 positive reactions).

Adolescent↗
PubMed1979

Granuloma size in the liver of mice with Schistosoma haematobium infection and Schistosoma mansoni challenge.

Swiss albino mice have been infected with S. haematobium and challenged with S. mansoni. S. haematobium infection in the mouse runs a course more or less parallel to that of S. mansoni infection. Granuloma has reached a maximal size at 135 days post infection and has regressed thereafter. Suppression of S. mansoni granuloma was observed in mice previously infected with S. haematobium. This manifests the presence of cross immunization.

Animals↗