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Title: Plasmodium falciparum: Effect of anti-malarial drugs on the production and secretion characteristics of histidine-rich protein II
Authors: Harald Noedl
Chansuda Wongsrichanalai
Robert Scott Miller
Khin Saw Aye Myint
Sornchai Looareesuwan
Yaowalark Sukthana
Varee Wongchotigul
Herwig Kollaritsch
Gerhard Wiedermann
Walther H. Wernsdorfer
Armed Forces Research Institute of Medical Sciences, Thailand
Universitat Wien
Mahidol University
Keywords: Immunology and Microbiology
Issue Date: 1-Nov-2002
Citation: Experimental Parasitology. Vol.102, No.3-4 (2002), 157-163
Abstract: Plasmodium falciparum histidine-rich protein II (HRP2) is one of the best documented malaria proteins. However, little is known about the development of HRP2 concentrations under the influence of anti-malarial drugs. HRP2 levels were determined in cell medium mixture, cellular compartment, and in culture supernatant using a double-site sandwich ELISA specific for HRP2. Characteristic increases in the overall HRP2 levels were found during the later ring and the trophozoite stages. Throughout the later schizont development, rupture, and reinvasion, however, the HRP2 levels remained comparatively stable. When the cultures were exposed to serial dilutions of anti-malarial drugs, a distinct inhibition of HRP2 production was seen with increasing concentrations of drugs, resulting in sigmoid dose-response curves, similar to those obtained from conventional drug sensitivity assays. HRP2 therefore allows for a very accurate estimation of parasite development and its inhibition and may therefore be ideally suited for use in drug sensitivity or bioassays. © 2003 Elsevier Science (USA). All rights reserved.
ISSN: 00144894
Appears in Collections:Scopus 2001-2005

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