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1Effect of pre-existing Schistosoma haematobium infection on Plasmodium berghei multiplications in imprinting control region mice显示文摘Objective: To investigate the effect of pre-existing Schistosoma haematobium(S. haematobium) infection on malaria disease severity.Methods: The study involved the use of twenty-i ve imprinting control region mice, i fteen of which were initially infected with S. haematobium. Five of the remaining ten schistouninfected mice together with i ve schisto-infected mice were infected with Plasmodium berghei(P. berghei) after four weeks(acute stage) of schistosoma infection. The remaining i ve schisto-uninfected mice together with i ve schisto-infected mice were also infected with P. berghei after seven weeks(chronic stage) of schistosoma infection. The last i ve schistoinfected mice were used as control group. They were then monitored for changes in P. berghei parasitaemia on Days 3, 5, 7, 9 and 11 post-infection. Records on their survivability were also taken.Results: The co-infected mice had signii cantly higher malaria parasitaemia, compared with the mono-infected mice during acute S. haematobium infection. In contrast, the co-infected mice had signii cantly lower malaria parasitaemia during chronic S. haematobium infection and a higher survival rate.Conclusions: Co-infection of mice with P. berghei during acute S. haematobium infection resulted in rapid P. berghei development and increased malaria parasitaemia. However, the co-infection resulted in slower P. berghei development and decreased malaria parasitaemia with enhanced survivability of the mice during chronic S. haematobium infection. Therefore, pre-existing chronic S. haematobium infection may provide some protection to the host by reducing parasitaemia.Benjamin Amoani Elvis Ofori Ameyaw Du-Bois Asante Francis Ackah Armah James Prah Collins Paa Kwesi Botchey Johnson Nyarko Boampong 2015Asian Pacific Journal of Tropical Biomedicine2015,5,6:0
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