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Titolo:
THE ALAMAR-BLUE(R) ASSAY TO DETERMINE DRUG-SENSITIVITY OF AFRICAN TRYPANOSOMES (TRYPANOSOMA-BRUCEI-RHODESIENSE AND TRYPANOSOMA-BRUCEI-GAMBIENSE) IN-VITRO
Autore:
RAZ B; ITEN M; GRETHERBUHLER Y; KAMINSKY R; BRUN R;
Indirizzi:
SWISS TROP INST,SOCINSTR 57 CH-4002 BASEL SWITZERLAND SWISS TROP INST CH-4002 BASEL SWITZERLAND
Titolo Testata:
Acta Tropica
fascicolo: 2, volume: 68, anno: 1997,
pagine: 139 - 147
SICI:
0001-706X(1997)68:2<139:TAATDD>2.0.ZU;2-A
Fonte:
ISI
Lingua:
ENG
Soggetto:
IN-VITRO; ACTIVITY INVITRO; BRUCEI; EVANSI; EQUIPERDUM;
Keywords:
AFRICAN TRYPANOSOMES; IN VITRO ASSAY; DRUG SENSITIVITY; ALAMAR BLUE(R); COLORIMETRIC; FLUOROMETRIC;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
16
Recensione:
Indirizzi per estratti:
Citazione:
B. Raz et al., "THE ALAMAR-BLUE(R) ASSAY TO DETERMINE DRUG-SENSITIVITY OF AFRICAN TRYPANOSOMES (TRYPANOSOMA-BRUCEI-RHODESIENSE AND TRYPANOSOMA-BRUCEI-GAMBIENSE) IN-VITRO", Acta Tropica, 68(2), 1997, pp. 139-147

Abstract

Alamar Blue(R), an indicator for metabolic cell function, was evaluated as a fluorescent and as a colorimetric dye in drug sensitivity assays for human pathogenic African trypanosomes, Trypanosoma brucei rhodesiense and T.b. gambiense. The experimental conditions were adjusted to find those where the relationship between trypanosome number and Alamar Blue(R) signal was linear over the widest possible range. Fluorescent signals correlated to trypanosome numbers from 10(4) trypanosomes/ml (T.b. rhodesiense) and 10(5) trypanosomes/ml (T.b. gambiense) up to2-3 x 10(6) trypanosomes/ml when trypanosomes were incubated for 2 h with 10% Alamar Blue(R). Trypanocidal activity of common drugs (melarsoprol, DFMO, suramin, pentamidine and diminazene aceturate) was determined employing this assay. The IC50 values obtained were comparable tothose obtained with another fluorochrome, BCECF-AM. The Alamar Blue(R) assay can be applied for drug screening, since it is simple, reproducible and economical. The assay can also be used in field sites with less equipped laboratories, because in addition to fluorometric endpoint determination, a colorimetric reading is possible. (C) 1997 ElsevierScience B.V.

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Documento generato il 23/01/21 alle ore 10:03:09