Results 181 to 190 of about 49,820 (224)
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Experimental Parasitology, 1992
Macrophages collected from BCG-infected mice or exposed in vitro to interferon-gamma plus lipopolysaccharide developed a cytostatic activity on Trypanosoma brucei gambiense and Trypanosoma brucei brucei. This trypanostatic activity of activated macrophages was inhibited by addition of N-monomethyl-L-arginine, an inhibitor of the L-arginine-nitric oxide
P, Vincendeau +5 more
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Macrophages collected from BCG-infected mice or exposed in vitro to interferon-gamma plus lipopolysaccharide developed a cytostatic activity on Trypanosoma brucei gambiense and Trypanosoma brucei brucei. This trypanostatic activity of activated macrophages was inhibited by addition of N-monomethyl-L-arginine, an inhibitor of the L-arginine-nitric oxide
P, Vincendeau +5 more
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Transport of methionine in Trypanosoma brucei brucei
Molecular and Biochemical Parasitology, 2000African trypanosomes live free in the bloodstream and central nervous system of mammalian hosts and also within the midgut of the tsetse fly vectors which transmit them. The parasite plasma membrane represents the interface between both hosts and parasite, and trypanosomes accumulate many essential metabolites via specific transport processes.
M P, Hasne, M P, Barrett
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Characterisation of pentamidine-resistant Trypanosoma brucei brucei
Molecular and Biochemical Parasitology, 1995Following selection in vitro by exposure to increasing concentrations of the aromatic diamidine pentamidine, a Trypanosoma brucei brucei clone has been characterised in vivo and in vitro. The resistant clone, designated T.b. brucei S427/118/PR32.6, was found to be less virulent than the parental clone T.b.
Berger, Bradley J. +2 more
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Journal of Parasitology, 2011
Mammalian immune responses to Trypanosoma brucei infection are important to control of the disease. In rats infected with T. brucei gambiense (Wellcome strain; WS) or T. brucei brucei (interleukin-tat 1.4 strain [ILS]), a marked increase in the number of macrophages in the spleen can be observed.
Kazuhiko, Nishimura +5 more
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Mammalian immune responses to Trypanosoma brucei infection are important to control of the disease. In rats infected with T. brucei gambiense (Wellcome strain; WS) or T. brucei brucei (interleukin-tat 1.4 strain [ILS]), a marked increase in the number of macrophages in the spleen can be observed.
Kazuhiko, Nishimura +5 more
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Biosynthesis of Trypanothione in Trypanosoma brucei brucei
Biological Chemistry, 2003Trypanothione [T(SH)2], the major redox mediator in pathogenic trypanosomatids, is synthetized stepwise by two distinct enzymes in Crithidia fasciculata, while in Trypanosoma cruzi a single enzyme catalyzes both steps. A full-length reading frame presumed to encode trypanothione synthetase (TryS) was obtained by PCR using DNA of T.
Marcelo, Comini +2 more
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Transketolase in Trypanosoma brucei
Molecular and Biochemical Parasitology, 2011A single copy gene, encoding a protein highly similar to transketolase from other systems, was identified in the Trypanosoma brucei genome. The gene was expressed in E. coli and the purified protein demonstrated transketolase activity with K(m) values of 0.2mM and 0.8mM respectively for xylulose 5-phosphate and ribose 5-phosphate.
Stoffel, Sabine A. +7 more
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Archives of Biochemistry and Biophysics, 2000
Methionine is an essential amino acid for both prokaryotic and eukaryotic organisms; however, little is known concerning its utilization in African trypanosomes, protozoa of the Trypanosoma brucei group. This study explored the Michaelis-Menten kinetic constants for transport and pool formation as well as metabolic utilization of methionine by two ...
B, Goldberg +4 more
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Methionine is an essential amino acid for both prokaryotic and eukaryotic organisms; however, little is known concerning its utilization in African trypanosomes, protozoa of the Trypanosoma brucei group. This study explored the Michaelis-Menten kinetic constants for transport and pool formation as well as metabolic utilization of methionine by two ...
B, Goldberg +4 more
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Porcine cerebralTrypanosoma brucei brucei trypanosomiasis
Tropical Animal Health and Production, 1991This paper describes the investigation of a disease outbreak among 10 adult pigs in Nsukka, Anambra State, Nigeria. Prior to the investigation one sow died of the disease. Trypanosomes were later detected in the blood of two of the nine pigs subsequently investigated.
D N, Onah, M, Uzoukwu
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Characterization of spermidine synthase from Trypanosoma brucei brucei
Molecular and Biochemical Parasitology, 1984Spermidine synthase from Trypanosoma brucei brucei was characterized and found to be similar to spermidine synthase from other sources. The Km for putrescine was found to be 0.2 mM and the Km for decarboxylated S-adenosylmethionine 0.1 microM. The approximate molecular weight of the enzyme was 74 000 as determined by a combination of molecular sieve ...
A J, Bitonti, S E, Kelly, P P, McCann
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The Ubiquitin-Ligase System in Trypanosoma Brucei Brucei
The American Journal of Tropical Medicine and Hygiene, 1993The question of whether the African trypanosome Trypanosoma brucei brucei utilizes a ubiquitin-ligase system to conjugate the 8,500-dalton protein ubiquitin to other proteins has not been investigated. Using 125I-labeled ubiquitin and gel electrophoresis (sodium dodecyl sulfate and acetic acid, urea, Triton X-100), we looked for the incorporation of ...
D J, Lowrie, B F, Giffin, R M, Ventullo
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