Abstract:
:With the aim of determining selectivity and the possible target(s) of nitroheteroaryl-1,3,4-thiadiazoles considered as possible leads for the development of anti-leishmanial agents, we studied 5-nitroimidazole, 5-nitrofuran and 5-nitrothiophene analogs of N-substituted-piperazinyl-1,3,4-thiadiazoles. We investigated 21 representative compounds 1-3(a-g) for the following properties: selectivity and efficiency against different Leishmania wild type species and intracellular parasite, toxicity against host cells and inhibition of topoisomerases I and II. Our results indicate that the nitroimidazole analogs 1a and 1f, and nitrofuran derivatives 2a, 2b, 2c, 2f, and 2g exhibited low toxicity against the host cells (IC(50)> or =80 microM), but high selectivity against intracellular amastigotes (selectivity index>12). Leishmania topoisomerases revealed impressive sensitivity to the agents (%inhibition >50 at IC(50) doses of compounds against Leishmania). Our findings showed that at least part of leishmaniacidal effect of the compounds could be attributed to disruption DNA-relaxed activities of topoisomerases I and II, and cleavable-complex formation.
journal_name
Exp Parasitoljournal_title
Experimental parasitologyauthors
Poorrajab F,Ardestani SK,Foroumadi A,Emami S,Kariminia A,Behrouzi-Fardmoghadam M,Shafiee Adoi
10.1016/j.exppara.2008.12.004subject
Has Abstractpub_date
2009-04-01 00:00:00pages
323-30issue
4eissn
0014-4894issn
1090-2449pii
S0014-4894(08)00321-4journal_volume
121pub_type
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journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1006/expr.1996.0018
更新日期:1996-03-01 00:00:00
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journal_title:Experimental parasitology
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journal_title:Experimental parasitology
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doi:10.1006/expr.1998.4362
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pub_type: 杂志文章
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abstract::In Trypanosoma brucei the GPI-anchored variant surface glycoprotein (VSG) represents approximately 90% of cell surface protein and a major proportion of endoplasmic reticulum (ER) biosynthetic output. We identified four trypanosomatid-specific genes encoding candidate ER-resident proteins; all were required for normal...
journal_title:Experimental parasitology
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journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1006/expr.1996.0119
更新日期:1996-12-01 00:00:00
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journal_title:Experimental parasitology
pub_type: 杂志文章
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更新日期:1988-06-01 00:00:00
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journal_title:Experimental parasitology
pub_type: 杂志文章
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更新日期:2001-05-01 00:00:00
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pub_type: 杂志文章
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abstract::Isospora suis is an intestinal protozoan parasite in pigs. The 2-3 weeks old piglets are most often infected by I. suis because their immune system is not fully developed. The infection exhibits clinical features such as diarrhea and dehydration and seriously affects the economic interests of farmers. The traditional ...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2016.03.001
更新日期:2016-06-01 00:00:00
abstract::Entamoeba histolytica infection is associated with considerable morbidity and mortality in the form of intestinal and extraintestinal amoebiasis. No vaccine is yet available for amoebiasis. Heparan Sulphate Binding Proteins (HSBPs) from E. histolytica were evaluated for immunogenicity and protective efficacy in a Guin...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2013.08.011
更新日期:2013-11-01 00:00:00
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journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2017.09.024
更新日期:2017-11-01 00:00:00
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journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2009.03.004
更新日期:2009-06-01 00:00:00
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journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/0014-4894(83)90034-6
更新日期:1983-06-01 00:00:00
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journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2012.03.006
更新日期:2012-05-01 00:00:00
abstract::Infectivity of the multicellular pathogen Schistosoma mansoni for the human host is dependent upon the ability of free-living cercariae to transform rapidly into parasitic schistosomula. The biochemical pathways that regulate this transitional period are unknown. The role of protein phosphorylation was investigated by...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/0014-4894(91)90024-q
更新日期:1991-08-01 00:00:00
abstract::The risk of human hookworm infections from land application of wastewater matrices could be high in regions with high hookworm prevalence. A rapid, sensitive and specific hookworm detection method from wastewater matrices is required in order to assess human health risks. Currently available methods used to identify h...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2015.08.009
更新日期:2015-12-01 00:00:00
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journal_title:Experimental parasitology
pub_type: 杂志文章
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更新日期:2021-01-01 00:00:00
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journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2018.02.003
更新日期:2018-03-01 00:00:00
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journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1006/expr.1993.1070
更新日期:1993-09-01 00:00:00
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journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1006/expr.1996.4132
更新日期:1997-02-01 00:00:00
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journal_title:Experimental parasitology
pub_type: 杂志文章
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更新日期:1985-06-01 00:00:00
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journal_title:Experimental parasitology
pub_type: 杂志文章
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更新日期:2015-06-01 00:00:00
abstract::A murine model system was developed to study the induction and mechanism of protective immunity to L3 of Strongyloides stercoralis. L3 were implanted in BALB/cByJ mice in diffusion chambers constructed with 0.1- or 2.0-microns-pore-size membranes. Parasites survived equally well regardless or membrane type for 7 days,...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1006/expr.1995.1036
更新日期:1995-03-01 00:00:00
abstract::Non-invasive small animal in vivo imaging is an essential tool in a broad variety of biomedical sciences and enables continuous monitoring of disease progression in order to develop and improve diagnostic, therapeutic and preventive measures. Imaging parasites non-invasively in live animals allows efficient parasite d...
journal_title:Experimental parasitology
pub_type: 杂志文章
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更新日期:2020-07-01 00:00:00
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journal_title:Experimental parasitology
pub_type: 杂志文章
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journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2009.02.009
更新日期:2009-06-01 00:00:00
abstract::In 1912 Blastocystis hominis was identified as a new species and classified as a yeast (Brumpt 1912). In the early 1920s several groups confirmed its classification as a yeast, specifically a member of the genus Schizosaccharomyces (discussed by Zierdt et al. 1967). Apart from an occasional case report, the classifica...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/0014-4894(89)90110-0
更新日期:1989-04-01 00:00:00
abstract::Living Leishmania amazonensis amastigotes were incubated with radioiodinated N-benzyloxycarbonyl-L-tyrosyl-L-alanyl diazomethane (Z-Tyr-AlaCHN2), an irreversible inhibitor of mammalian cathepsins B and L. Parasite lysates were subjected to electrophoresis in gelatin-containing sodium dodecyl sulfate-acrylamide gels to...
journal_title:Experimental parasitology
pub_type: 杂志文章
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