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Therapeutic potential of medicinal plants against COVID-19: The role of antiviral medicinal metabolites

Authors
  • Khan, Tariq1
  • Khan, Mubarak Ali2
  • Mashwani, Zia-ur-Rehman3
  • Ullah, Nazif2
  • Nadhman, Akhtar4
  • 1 Department of Biotechnology, University of Malakand, Chakdara, KP, Pakistan
  • 2 Department of Biotechnology, Faculty of Chemical and Life Sciences, Abdul Wali Khan University Mardan (AWKUM), Mardan, 23390, Pakistan
  • 3 Department of Botany, PMAS Arid Agriculture University, Rawalpindi, Pakistan
  • 4 Department of Integrative Biosciences, CECOS University, Peshawar, Pakistan
Type
Published Article
Journal
Biocatalysis and Agricultural Biotechnology
Publisher
Elsevier Ltd.
Publication Date
Dec 11, 2020
Volume
31
Pages
101890–101890
Identifiers
DOI: 10.1016/j.bcab.2020.101890
PMID: 33520034
PMCID: PMC7831775
Source
PubMed Central
Keywords
Disciplines
  • Review
License
Unknown

Abstract

There are numerous trials underway to find treatment for the COVID-19 through testing vaccines as well as existing drugs. Apart from the many synthetic chemical compounds, plant-based compounds could provide an array of \suitable candidates for testing against the virus. Studies have confirmed the role of many plants against respiratory viruses when employed either as crude extracts or their active ingredients in pure form. The purpose of this review article is to highlight the importance of phytomedicine against COVID-19. The main aim is to review the mechanistic aspects of most important phytochemical compounds that have showed potential against coronaviruses. Glycyrrhizin from the roots of Glycyrrhiza glabra has shown promising potential against the previously epidemic coronavirus, SARS-CoV. Other important plants such as Artemisia annua , Isatis indigotica, Lindera aggregate , Pelargonium sidoides , and Glychirrhiza spp. have been employed against SARS-CoV. Active ingredients (e.g. emodin, reserpine, aescin, myricetin, scutellarin, apigenin, luteolin, and betulonic acid) have shown promising results against the coronaviruses. Phytochemicals have demonstrated activity against the coronaviruses through mechanisms such as viral entry inhibition, inhibition of replication enzymes and virus release blockage. However, compared to synthetic drugs, phytomedicine are mechanistically less understood and should be properly evaluated before application. Nonetheless, phytochemicals reduce the tedious job of drug discovery and provide a less time-consuming alternative for drug testing. Therefore, along with other drugs currently tested against COVID-19, plant-based drugs should be included for speedy development of COVID-19 treatment.

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