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human malaria

Fast and fierce versus slow and smooth: Heterogeneity in immune responses to Plasmodium in the controlled human malaria infection model

January 20, 2020 - 14:39 -- Open Access
Author(s): 
Yap XZ, McCall MBB, Sauerwein RW
Reference: 
Immunological Reviews, Volume293, Issue1, January 2020

Controlled human malaria infection (CHMI) is an established model in clinical malaria research. Upon exposure to Plasmodium falciparum parasites, malaria‐naive volunteers differ in dynamics and composition of their immune profiles and subsequent capacity to generate protective immunity. CHMI volunteers are either inflammatory responders who have prominent cellular IFN‐γ production primarily driven by adaptive T cells, or tempered responders who skew toward antibody‐mediated humoral immunity. When exposed to consecutive CHMIs under antimalarial chemoprophylaxis, individuals who can control parasitemia after a single immunization (fast responders) are more likely to be protected against a subsequent challenge infection.

Novel RNA viruses associated with Plasmodium vivax in human malaria and Leucocytozoon parasites in avian disease

January 14, 2020 - 17:05 -- Open Access
Author(s): 
Charon J, Grigg MJ, Eden JS, Piera KA, Rana H, William T, Rose K, Davenport MP, Anstey NM, Holmes EC
Reference: 
PLoS Pathog 15(12): e1008216

Eukaryotes of the genus Plasmodium cause malaria, a parasitic disease responsible for substantial morbidity and mortality in humans. Yet, the nature and abundance of any viruses carried by these divergent eukaryotic parasites is unknown. We investigated the Plasmodium virome by performing a meta-transcriptomic analysis of blood samples taken from patients suffering from malaria and infected with P. vivax, P. falciparum or P. knowlesi.

Transforming growth factor-beta profiles correlate with clinical symptoms and parameters of haemostasis and inflammation in a controlled human malaria infection

January 7, 2020 - 14:14 -- Open Access
Author(s): 
de Jong GM, McCall MBB, van Genderen PJJ, et al.
Reference: 
Cytokine Volume 125, January 2020, 154838

After a controlled human malaria infection (CHMI), presentation of clinical signs and symptoms and host responses is heterogeneous. Transforming growth factor-beta (TGF-β) is the first serum cytokine that changes in malaria-naïve volunteers after CHMI. We studied a possible relation between TGF-β changes, pro-inflammatory cytokines, activation of haemostasis and endothelial cells and clinical symptoms.

A two-colour multiplexed lateral flow immunoassay system to differentially detect human malaria species on a single test line

September 23, 2019 - 14:09 -- Open Access
Author(s): 
Jinsu Kim, Xiangkun Elvis Cao, Julia L. Finkelstein, Washington B. Cárdenas, David Erickson and Saurabh Mehta
Reference: 
Malaria Journal 2019 18:313, 18 September 2019

Malaria continues to impose a tremendous burden in terms of global morbidity and mortality, yet even today, a large number of diagnoses are presumptive resulting in lack of or inappropriate treatment.

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