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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2007-10-15
pubmed:abstractText
A reliable, rapid and low-cost method for drug sensitivity determination of Giardia duodenalis trophozoites (WB-strain) was developed in a 96-well plate. Using a standard inoculum of 5 x 10(4) trophozoites per well (300 microl), good growth was obtained after sealing the plate with an air-tight adhesive tape and incubation at 37 degrees C for 72 h in modified TYI-S-33 medium. Viable burdens were quantified using the formazan dyes MTT (100 microg/well) and XTT (20 microg/well) and the fluorescent substrate resazurin (2.5 microg/well). Prior removal of the culture medium is required since it causes spontaneous reduction of the substrate. Resazurin proved to be far superior to MTT and XTT with a level of sensitivity of about 3 x 10(4) trophozoites. Inhibitory concentrations (IC(50)) of several anti-giardial reference drugs were within the range of published values: metronidazole 2.25 microM, tinidazole 1.75 microM, albendazole 0.10 microM, furazolidone 2.00 microM and quinacrine 0.32 microM. The broad-spectrum antibiotics chloramphenicol, rifampicin, penicillin G+streptomycin and gentamycin were devoid of any inhibitory activity and are considered suitable for decontamination during excystation experiments.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
0167-7012
pubmed:author
pubmed:issnType
Print
pubmed:volume
71
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
101-6
pubmed:meshHeading
pubmed:year
2007
pubmed:articleTitle
A new quantitative in vitro microculture method for Giardia duodenalis trophozoites.
pubmed:affiliation
Laboratory for Microbiology, Parasitology and Hygiene, Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, Antwerp University, Groenenborgerlaan 171, B-2020 Antwerp, Belgium.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't