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Acta Parasitologica

, Volume 62, Issue 2, pp 290–295 | Cite as

Amoebicidal activity of α-bisabolol, the main sesquiterpene in chamomile (Matricaria recutita L.) essential oil against the trophozoite stage of Acanthamoeba castellani Neff

  • Soumaya Hajaji
  • Ines Sifaoui
  • Atteneri López-Arencibia
  • María Reyes-Batlle
  • Basilio Valladares
  • José E. Pinero
  • Jacob Lorenzo-MoralesEmail author
  • Hafidh Akkari
Article

Abstract

Acanthamoeba genus includes opportunistic pathogens which are distributed worldwide and are causative agents of a fatal encephalitis and severe keratitis in humans and other animals. Until present there are not fully effective therapeutic agents against this pathogen and thus the need to search for novel anti-amoebic compounds is urgent. Recently, essential oils of aromatic and medicinal plants have shown activity against Acanthamoeba strains. Therefore, this study was aimed to evaluate the activity of main component of chamomile essential oil (a sesquiterpene) namely α-bisabolol against the Acanthamoeba castellani Neff strain. After evaluation of the activity and toxicity of this molecule, IC50 values of 20.839 ± 2.015 for treated amoebae as well as low citotoxicty levels in a murine macrophage cell line was observed. Moreover, in order to elucidate mechanism of action of this molecule, changes in chromatin condensation levels, permeability of the plasmatic membrane, the mitochondrial membrane potential and the ATP levels in the treated amoebic strains were checked. The obtained results revealed that α-bisabolol was able to induce apoptosis, increase the permeability of the plasmatic membrane and decrease both mitochondrial and ATP levels in the treated amoebae. Therefore, and given the obtained results, α-bisabolol could be used a future therapeutic agent against Acanthamoeba infections.

Keywords

Acanthamoeba spp. Matricaria essential oil activity α-bisabolol 

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Copyright information

© Witold Stefański Institute of Parasitology, Polish Academy of Sciences 2017

Authors and Affiliations

  • Soumaya Hajaji
    • 1
    • 2
  • Ines Sifaoui
    • 3
  • Atteneri López-Arencibia
    • 3
  • María Reyes-Batlle
    • 3
  • Basilio Valladares
    • 3
  • José E. Pinero
    • 3
  • Jacob Lorenzo-Morales
    • 3
    Email author
  • Hafidh Akkari
    • 1
  1. 1.Laboratoire de ParasitologieUniversité de la ManoubaTunisia
  2. 2.Faculté des sciences de BizerteUniversité de CarthageZarzounaTunisia
  3. 3.University Institute of Tropical Diseases and Public Health of the Canary IslandsUniversity of La LagunaTenerife, Canary IslandsSpain

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