Competitive Price for Ada Monosodium - SYBR GREEN I Nucleic Acid Gel Stain Cas: 163795-75-3 99% Solid – XD BIOCHEM
Competitive Price for Ada Monosodium - SYBR GREEN I Nucleic Acid Gel Stain Cas: 163795-75-3 99% Solid – XD BIOCHEM Detail:
| Catalog Number | XD90236 |
| Product Name | SYBR GREEN I Nucleic Acid Gel Stain |
|
CAS |
163795-75-3 |
|
Molecular Formula |
C32H37N4S |
|
Molecular Weight |
509.728 |
| Storage Details | -20°C |
Product Specification
| Appearance | White powder |
| Assay | 99% |
Flow cytometry is an objective method for conducting in vitro antimalarial sensitivity assays with increasing potential for application in field sites. We examined in vitro susceptibility to seven anti-malarial drugs for 40 fresh P. falciparum field isolates via a flow cytometry method (FCM), a colorimetric LDH-based ELISA : DELI), and standard microscopic slide analysis of growth. For FCM, 184/280 (66%) assays met analytical acceptance criteria, compared to 166/280 (59%) for DELI. There was good agreement between FCM and microscopy, while DELI tended to produce higher half-maximal inhibition constants (IC50s) than FCM, with an overall bias of 2.2-fold (Bland-Altman comparison). Values for artesunate and dihydroartemisinin were most affected. Paradoxical increases in signal at very high concentrations of mefloquine and related compounds were more marked with the DELI assay, suggesting that off-target effects on LDH production may be responsible. Loss of FCM signal due to reinvasion or slow growth was observed in a small number of samples. These results extend previous work on use of flow cytometry to determine antimalarial susceptibility in terms of the number of samples, range of drugs, and comparison with other methods.
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