Antiviral activity of medicinal plants of Nilgiris

P. Vijayan, C. Raghu, G. Ashok, S. A. Dhanaraj, B. Suresh

Research output: Contribution to journalArticle

150 Citations (Scopus)

Abstract

Background & objectives: Medicinal plants have been traditionally used for different kinds of ailments including infectious diseases. There is an increasing need for substances with antiviral activity since the treatment of viral infections with the available antiviral drugs often leads to the problem of viral resistance. Herpes simplex virus (HSV) causes a variety of life threatening diseases. Since the chemotherapeutic agents available for HSV infections are either low in quality or limited in efficiency, there is a need to search for new and more effective antiviral agents for HSV infections. Therefore in the present study 18 plants with ethnomedical background from different families were screened for antiviral activity against HSV-1. Methods: Different parts of the plants collected from in and around Ootacamund, Tamil Nadu were extracted with different solvents to obtain crude extracts. These extracts were screened for their cytotoxicity against Vero cell line by assay microculture tetrazolium (MTT) trypan blue dye exclusion, proteins estimation and 3H labeling. Antiviral properties of the plant extracts were determined by cytopathic effect inhibition assay and virus yield reduction assay. Results: Three plant extracts Hypericum mysorense, Hypericum hookerianum and Usnea complanta exhibited significant antiviral activity at a concentration non toxic to the cell line used. The extracts of Melia dubia, Cryptostegia grandiflora and essential oil of Rosmarinus officinalis showed partial activity at higher concentrations. Interpretation & conclusion: Some of the medicinal plants have shown antiviral activity. Further research is needed to elucidate the active constituents of these plants which may be useful in the development of new and effective antiviral agents.

Original languageEnglish
Pages (from-to)24-29
Number of pages6
JournalIndian Journal of Medical Research
Volume120
Issue number1
Publication statusPublished - 01-07-2004

Fingerprint

Medicinal Plants
Antiviral Agents
Viruses
Virus Diseases
Simplexvirus
Hypericum
Assays
Plant Extracts
Melia
Usnea
Rosmarinus
Cells
Apocynaceae
Cell Line
Vero Cells
Trypan Blue
Poisons
Human Herpesvirus 1
Volatile Oils
Cytotoxicity

All Science Journal Classification (ASJC) codes

  • Biochemistry, Genetics and Molecular Biology(all)

Cite this

Vijayan, P., Raghu, C., Ashok, G., Dhanaraj, S. A., & Suresh, B. (2004). Antiviral activity of medicinal plants of Nilgiris. Indian Journal of Medical Research, 120(1), 24-29.
Vijayan, P. ; Raghu, C. ; Ashok, G. ; Dhanaraj, S. A. ; Suresh, B. / Antiviral activity of medicinal plants of Nilgiris. In: Indian Journal of Medical Research. 2004 ; Vol. 120, No. 1. pp. 24-29.
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Vijayan, P, Raghu, C, Ashok, G, Dhanaraj, SA & Suresh, B 2004, 'Antiviral activity of medicinal plants of Nilgiris', Indian Journal of Medical Research, vol. 120, no. 1, pp. 24-29.

Antiviral activity of medicinal plants of Nilgiris. / Vijayan, P.; Raghu, C.; Ashok, G.; Dhanaraj, S. A.; Suresh, B.

In: Indian Journal of Medical Research, Vol. 120, No. 1, 01.07.2004, p. 24-29.

Research output: Contribution to journalArticle

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Vijayan P, Raghu C, Ashok G, Dhanaraj SA, Suresh B. Antiviral activity of medicinal plants of Nilgiris. Indian Journal of Medical Research. 2004 Jul 1;120(1):24-29.