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Suppression of Babesia Microti Infection in Mice Concurrently Infected with Schistosoma Mansoni
Suppression af Babesia microti infektion hos mus med samtidig infektion med Schistosoma mansoni
Acta Veterinaria Scandinavica volume 26, pages 191–204 (1985)
Abstract
Blood cell panasitaemias of Babesai microti and associated haematological changes were studied in mice concurrently infected with Schistosoma mansoni and in controls with no schistosome infections. In comparison to the controls B. microti parasit-aemias were suppressed markedly in mice harbouring 6 and 8 weeks old patent S. mansoni infections at the time of infection with B. microti. The suppression was accompanied by an alleviation/annulment of the B. microti induced reductions in haemoglobin and haematocrit levels and in its erythropoetic stimulation. The suppressive effect of patent S. mansoni infections on B. microti is suggested to be at least partly attributable to non-specific immunological factors although the altered erythrocyte kinetic state induced by the schistosoma infection in combination with the preference of B. microti for mature (old) erythrocytes might also play a role in the suppression. In mice harbouring 2 weeks old prepatent S. mansoni infections B. microti was not suppressed.
Sammendrag
Babesia microti parasitæmien og haematologiske forandringer blev undersøgt hos henholdsvis mus med samtidig infektion med Schistosoma mansoni og hos kontrolmus uden schistosominfektion. B. microti parasitæmien blev suppreret i betydelig grad hos mus der var blevet inficerede med S. mansoni 6 og 8 uger tidligere. Denne suppression blev ledsaget af en reduktion/ophævelse af den af B. microti forårsagede reduktion i hæmoglobin og hæmatokrit niveauerne og af B. microti’s bidrag til erythropoesens størrelse. Den suppressive effekt af patente S. mansoni infektioner på B. microti formodes i det mindste delvis at være forårsaget af non-specifikke immunologiske faktorer, men den af schistosominfektionen forårsagede ændring i erythrocyt-omsætningen sammenholdt med B. microti’s præference for mature (gamle) erythrocytter kan muligvis også være en medvirkende årsag til suppressionen. I mus, der var blevet inficerede med S. mansoni 2 uger før infektionen med B. microti, forekom der ingen suppression af protozoinfektionen.
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Fagbemi, B., Christensen, N.Ø. & Nansen, P. Suppression of Babesia Microti Infection in Mice Concurrently Infected with Schistosoma Mansoni. Acta Vet Scand 26, 191–204 (1985). https://doi.org/10.1186/BF03546551
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DOI: https://doi.org/10.1186/BF03546551