نتایج جستجو برای: malaria parasite

تعداد نتایج: 77774  

2014
Ryan C Smith Joel Vega-Rodríguez Marcelo Jacobs-Lorena

Nearly one million people are killed every year by the malaria parasite Plasmodium . Although the disease-causing forms of the parasite exist only in the human blood, mosquitoes of the genus Anopheles are the obligate vector for transmission. Here, we review the parasite life cycle in the vector and highlight the human and mosquito contributions that limit malaria parasite development in the mo...

2014
Chaturong Putaporntip Jun Miao Napaporn Kuamsab Jetsumon Sattabongkot Jeeraphat Sirichaisinthop Somchai Jongwutiwes Liwang Cui

BACKGROUND Malaria control efforts have a significant impact on the epidemiology and parasite population dynamics. In countries aiming for malaria elimination, malaria transmission may be restricted to limited transmission hot spots, where parasite populations may be isolated from each other and experience different selection forces. Here we aim to examine the Plasmodium vivax population diverg...

2016
Tigist Yitbarek Desalegn Nega Geremew Tasew Bineyam Taye Kassu Desta

BACKGROUND Blood film microscopy is the gold standard approach for malaria diagnosis, and preferred method for routine patient diagnosis in health facilities. However, the inability of laboratory professionals to correctly detect and identify malaria parasites microscopically leads to an inappropriate administration of anti-malarial drugs to the patients and incorrect findings in research areas...

2009
J. Alexandra Rowe Antoine Claessens Ruth A. Corrigan Mònica Arman

Severe malaria has a high mortality rate (15-20%) despite treatment with effective antimalarial drugs. Adjunctive therapies for severe malaria that target the underlying disease process are therefore urgently required. Adhesion of erythrocytes infected with Plasmodium falciparum to human cells has a key role in the pathogenesis of life-threatening malaria and could be targeted with antiadhesion...

2016
Yohannes Demissie Tsige Ketema

BACKGROUND Malaria is still a major health problem in some parts of the world. Plasmodium falciparum is the common pathogenic parasite and is responsible for majority of malaria associated deaths. Recently the other benign parasite, P. vivax, is reported to cause life threatening severe malaria complications. Thus, this study was aimed to assess incidence of severe malaria symptoms caused by P....

2015
Mark Kaddumukasa Catherine Lwanira Allan Lugaajju Elly Katabira Kristina E. M. Persson Mats Wahlgren Fred Kironde

INTRODUCTION There is no approved vaccine for malaria, and precisely how human antibody responses to malaria parasite components and potential vaccine molecules are developed and maintained remains poorly defined. In this study, antibody anamnestic or memory response elicited by a single episode of P. falciparum infection was investigated. METHODS This study involved 362 malaria patients aged...

2015
Bridget E. Barber Timothy William Matthew J. Grigg Uma Parameswaran Kim A. Piera Ric N. Price Tsin W. Yeo Nicholas M. Anstey

Plasmodium vivax can cause severe malaria, however its pathogenesis is poorly understood. In contrast to P. falciparum, circulating vivax parasitemia is low, with minimal apparent sequestration in endothelium-lined microvasculature, and pathogenesis thought unrelated to parasite biomass. However, the relationships between vivax disease-severity and total parasite biomass, endothelial autocrine ...

2010
Nicolas Senn Seri Maraga Albert Sie Stephen J. Rogerson John C. Reeder Peter Siba Ivo Mueller

BACKGROUND The hypothesis is that hemoglobin-based metrics are useful tools for estimating malaria endemicity and for monitoring malaria control strategies. The aim of this study is to compare population hemoglobin mean and anemia prevalence to established indicators of malaria endemicity, including parasite rates, rates of enlarged spleens in children, and records of (presumptive) malaria diag...

2015
Giulia Siciliano Pietro Alano

The unicellular protozoan parasites of the genus Plasmodium impose on human health worldwide the enormous burden of malaria. The possibility to genetically modify several species of malaria parasites represented a major advance in the possibility to elucidate their biology and is now turning laboratory lines of transgenic Plasmodium into precious weapons to fight malaria. Amongst the various ge...

Journal: :Blood 2003
Rick M Fairhurst Hisashi Fujioka Karen Hayton Kathleen F Collins Thomas E Wellems

Although selection of hemoglobin C (HbC) by malaria has been speculated for decades, only recently have epidemiologic studies provided support for HbC protection against malaria in West Africa. A reduced risk of malaria associated with the homozygous CC state has been attributed to the inability of CC cells to support parasite multiplication in vitro. However, there have been conflicting data a...

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