The formation of hemozoin (malaria pigment) has been proposed as an ideal drug target for antimalarial screening programs. In this study, we used an improved, cost-effective and high-throughput spectrophotometric assay to screen plant extracts for finding novel antimalarial plant sources. Fifteen extracts with different polarity from three Iranian Artemisia species, A. ciniformis, A. biennis and A. turanica, were assessed for their antimalarial activity by in-vitro β-hematin formation assay. The most potent effect was observed in dichloromethane (DCM) extract of A. ciniformis with IC50 and IC90 values of 0.92 ± 0.01 and 1.29 ± 0.02 mg/mL, respectively. Ethyl acetate (EtOAC) extracts of A. biennis and A. turanica also showed significant antimalarial activities with IC50 values of 1.11 ± 0.02 and 1.35 ± 0.08 mg/mL and IC90 values of 1.22 ± 0.04 and 2.81 ± 0.21 mg/mL, respectively. Based on these results, it is possible to conclude that the components with strong antimalarial activity have been concentrated in the medium-polar extracts.
Screening of Different Extracts from Artemisia Species for Their Potential Antimalarial Activity
M. Mojarrab,R. Naderi,Fariba Heshmati Afshar
Published 2015 in Iranian journal of pharmaceutical research
ABSTRACT
PUBLICATION RECORD
- Publication year
2015
- Venue
Iranian journal of pharmaceutical research
- Publication date
2015-05-01
- Fields of study
Biology, Medicine, Environmental Science
- Identifiers
- External record
- Source metadata
Semantic Scholar, PubMed
CITATION MAP
EXTRACTION MAP
CLAIMS
CONCEPTS
- artemisia biennis
One of the Iranian Artemisia species whose solvent extracts were tested in the screening panel.
Aliases: A. biennis
- artemisia ciniformis
One of the Iranian Artemisia species whose solvent extracts were tested in the screening panel.
Aliases: A. ciniformis
- artemisia turanica
One of the Iranian Artemisia species whose solvent extracts were tested in the screening panel.
Aliases: A. turanica
- dichloromethane extract
A plant extract fraction prepared using dichloromethane as the extraction solvent.
Aliases: DCM extract
- ethyl acetate extract
A plant extract fraction prepared using ethyl acetate as the extraction solvent.
Aliases: EtOAC extract
- hemozoin
The malaria pigment whose formation is targeted by the assay as a readout of heme detoxification.
Aliases: malarial pigment
- high-throughput spectrophotometric assay
A spectrophotometric screening method used to measure inhibition of β-hematin formation in test extracts.
Aliases: spectrophotometric assay, high-throughput assay
- medium-polar extracts
Extract fractions prepared with solvents of intermediate polarity, including dichloromethane and ethyl acetate fractions.
Aliases: medium polarity extracts
- β-hematin formation assay
An in-vitro assay that evaluates compounds by their ability to inhibit β-hematin crystal formation.
Aliases: beta-hematin formation assay, hemozoin formation assay
REFERENCES
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