Influence of Artemisia annua L. on toll-like receptor expression in brain of mice infected with Acanthamoeba sp

Exp Parasitol. 2018 Feb:185:17-22. doi: 10.1016/j.exppara.2018.01.008. Epub 2018 Jan 6.

Abstract

The treatment of acanthamoebiasis is a still a problem. Our previous studies showed that the application of extracts from Artemisia annua L. significantly prolonged the survival of mice infected by Acanthamoeba. This plant has medicinal properties in the treatment of human parasitic diseases. The aim of this study was to evaluate the effects of A. annua on expression of Toll-like receptors (TLRs) 2 and 4 in brain of mice with Acanthamoeba infection. Mice were infected with Acanthamoeba sp. strain Ac309 (KY203908) by intranasal inoculation without and after application of A. annua extract. The administration of extract from A. annua significantly reduced the level of expression of TLR2 and modified the level of expression of TLR4. A. annua extract is a natural substance that is well tolerated in animals and may be considered as a combination therapy in treatment of acanthamoebiasis. Our study suggested that A. annua extract may be used as an alternative therapeutic tool.

Keywords: Acanthamoeba sp.; Artemisia annua; Brain; Mice; TLR2; TLR4.

MeSH terms

  • Acanthamoeba / drug effects*
  • Amebiasis / drug therapy*
  • Amebiasis / metabolism
  • Animals
  • Artemisia annua / chemistry*
  • Brain / metabolism*
  • Brain / pathology
  • Gene Expression
  • Immunohistochemistry
  • Mice
  • Mice, Inbred BALB C
  • Phytotherapy*
  • Plant Extracts / pharmacology
  • Plant Extracts / therapeutic use
  • RNA, Messenger / metabolism
  • Real-Time Polymerase Chain Reaction
  • Toll-Like Receptor 2 / drug effects
  • Toll-Like Receptor 2 / genetics
  • Toll-Like Receptor 2 / metabolism
  • Toll-Like Receptor 4 / drug effects
  • Toll-Like Receptor 4 / genetics
  • Toll-Like Receptor 4 / metabolism
  • Toll-Like Receptors / drug effects*
  • Toll-Like Receptors / genetics
  • Toll-Like Receptors / metabolism

Substances

  • Plant Extracts
  • RNA, Messenger
  • Tlr2 protein, mouse
  • Tlr4 protein, mouse
  • Toll-Like Receptor 2
  • Toll-Like Receptor 4
  • Toll-Like Receptors