Parasitology Research

, Volume 104, Issue 6, pp 1345–1349 | Cite as

Indigenous traditional medicine: in vitro anti-giardial activity of plants used in the treatment of diarrhea

  • Clara Lia Costa Brandelli
  • Raquel Brandt Giordani
  • Geraldo Attilio De Carli
  • Tiana TascaEmail author
Original Paper


The ethnopharmacology for treatment of parasitic infections facilitates and directs the search for new chemical entities. In this direction, this study evaluated the cytotoxicity in vitro, against trophozoites of Giardia lamblia, of aqueous extracts of leaves Achyrocline satureioides (Lam.) DC., barks of Eugenia uniflora L., aerial parts of Foeniculum vulgare Miller, and barks of Psidium guajava L. These plants are traditionally used for the treatment of diarrhea by the indigenous population Mbyá-Guarani, located at the Lomba do Pinheiro, Porto Alegre, Rio Grande do Sul, Brazil. The in vitro susceptibility qualitative analysis of G. lamblia to aqueous extracts was performed in serial dilutions from 2.5 to 0.02 mg/mL. Results revealed the minimal inhibitory concentrations: 0.313 mg/mL for A. satureioides and E. uniflora, 0.02 mg/mL for P. guajava, and F. vulgare did not present any cytotoxic effect. Quantitative assays of viable trophozoites, showed that A. satureioides presented the highest cytotoxic effect (93.5%), followed by P. guajava (82.2%), and E. uniflora (67.3%). Indigenous Guarani use mainly A. satureioides for the treatment of diarrhea, revealing the conformity with results obtained in vitro. Bioguided assays are necessary to identify the compounds responsible for the activity of the aqueous extract of A. satureioides.


Irritable Bowel Syndrome Aqueous Extract Tinidazole Estragole Fenchone 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



The authors thank Chieftain José Cirilo Pires Morinico (tribe Mbyá-Guarani), for making possible the accomplishment of this study and for the valuable information, Dr. Lilian Mentz (Departamento de Botânica, IB, UFRGS), for her assistance at the herbarium, and to Dr. Tatiane da Silva, (Faculdade de Farmácia, UFRGS), for loaning SPSS software. This study received financial support from FAPERGS (Porto Alegre, RS, Brazil), grant 0522751, and TWAS (Trieste, Italy), grant 06-328.


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Copyright information

© Springer-Verlag 2009

Authors and Affiliations

  • Clara Lia Costa Brandelli
    • 1
  • Raquel Brandt Giordani
    • 2
  • Geraldo Attilio De Carli
    • 3
  • Tiana Tasca
    • 1
    Email author
  1. 1.Laboratório de Pesquisa em Parasitologia, Faculdade de FarmáciaUniversidade Federal do Rio Grande do SulPorto AlegreBrazil
  2. 2.Laboratório de Farmacognosia, Faculdade de FarmáciaUniversidade Federal do Rio Grande do SulPorto AlegreBrazil
  3. 3.Instituto de Geriatria e GerontologiaPontifícia Universidade Católica do Rio Grande do SulPorto AlegreBrazil

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