Antiviral Activity of Euphorbia helioscopia Extract


	Journal of Biological Sciences
	Year: 2008 \| Volume: 8 \| Issue: 4 \| Page No.: 809-813 DOI: 10.3923/jbs.2008.809.813

Antiviral Activity of Euphorbia helioscopia Extract

M. Ramezani, J. Behravan, M. Arab and S. Amel Farzad

Abstract: In the present study, the antiviral effects of Euphorbia helioscopia extracts were investigated using plaque reduction assay. Plant extracts were prepared using Soxhlet apparatus or by maceration in methanol. After applying several enriching stages of phage CP51, phage titration was performed to determine the phage concentration in phage lysate for specifying the dilution factor of the phage to be used as negative control for the next working stages. Then IC₅₀ of trifluridine, as a positive control, for phage CP51 was determined. The MIC of the extracts for Bacillus cereus was determined as 1.25 and 0.5 mg mL^-1 for Soxhlet and maceration extracts, respectively. To determine whether the extracts have the ability to inhibit the adsorption of virus to host cell, it was pre-incubated with phage CP51 for 30 min at 25°C. The growth and reproduction of phage was inhibited by more than 50% at concentration of 1 and 0.25 mg mL^-1, respectively. In order to test the effects of extract on transcription process, Bacillus cereus, phage CP51 and extract were incubated together. The growth and reproduction of phage was inhibited by more than 50% at concentration of 0.75 and 0.125 mg mL^-1or Soxhlet and macerated extracts, respectively. These results indicated that both extracts of E. helioscopia have considerable antiviral activity.

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How to cite this article:

M. Ramezani, J. Behravan, M. Arab and S. Amel Farzad, 2008. Antiviral Activity of Euphorbia helioscopia Extract. Journal of Biological Sciences, 8: 809-813.

DOI: 10.3923/jbs.2008.809.813

URL: https://scialert.net/abstract/?doi=jbs.2008.809.813

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