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- W1483171617 abstract "Malaria disease is a major global health and economic development threat. It results in approximately 2.7 million deaths annually. There is currently no vaccine that has been licensed for use against malaria. Studies in animal models, especially non-human primates can lead to the revelation of possible immunological mechanisms that can lead to protection or predisposition of the host to malaria. Plasmodium knowlesi, a simian and human malaria parasite, is an attractive experimental parasite for malaria research since it can infect olive baboons (Papio anubis), non-human primates that have similar host-pathogen interactions to humans. This study was carried out to determine host immunological profiles provoked in olive baboons during the course of an infection with Plasmodium knowlesi. A total of eight adult baboons were intravenously inoculated with overnight cultured blood stage P. knowlesi H strain parasites. Five of these baboons became acutely infected while the other three became chronically infected. The immunological basis of this dual outcome of the infection was determined by measuring circulating cytokine (T helper 1 and T helper 2) and antibody (immunoglobulin G and immunoglobulin M) responses elicited in the infected baboons on a weekly basis by Enzyme Linked Immunosorbent Assay (ELISA) for up to six weeks post infection. Generated data for the first time indicated that acute P. knowlesi malaria is accompanied by increased concentrations of interferon gamma (IFN gamma), tumour necrosis factor alpha (TNF alpha) and IL 6 and reduced levels of circulating interleukin 10 (IL 10), IL 4, IL 12, immunoglobulin G (IgG) and IgM in the baboon host. These results are largely agreeable with data from human studies, thereby increasing the relevance of the olive baboon - P. knowlesi experimental infection system for future malaria studies." @default.
- W1483171617 created "2016-06-24" @default.
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- W1483171617 date "2012-01-16" @default.
- W1483171617 modified "2023-09-27" @default.
- W1483171617 title "Immunity to Plasmodium knowlesi H strain malaria in olive baboons" @default.
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