Parasitology Research

, Volume 97, Issue 5, pp 417–419 | Cite as

In vitro antiparasitic activity of extracts of Cardiospermum halicacabum against third-stage larvae of Strongyloides stercoralis

  • T. BoonmarsEmail author
  • W. Khunkitti
  • P. Sithithaworn
  • Y. Fujimaki
Short Communication


Extracts of Cardiospermum halicacabum, medicinal plant, were tested in vitro for their effectiveness against third-stage larvae of Strongyloidesstercoralis. Third-stage larvae of S. stercoralis were isolated from cultures of dog’s feces using agar plate culture method. The larvae (1,000 larvae/ml), suspended in phosphate buffer saline solution, pH 7.4, were exposed to aqueous and alcohol extracts (2,000 μg/ml) of C. halicacabum at 37°C with 5% CO2. Ivermectin (250 μg/ml) and piperazine (2,000 μg/ml) were also used as the reference drugs. The survival of Strongyloides larvae based on its motility was determined daily for 7 days. Strongyloides larvae were viable after contact with ivermectin, piperazine and C. halicacabum (aqueous and alcohol) solutions, but most of them were immobilized, after exposure to aqueous and alcohol extracts of C. halicacabum within 72 and 48 h, respectively, while ivermectin took from 72 to144 h, and piperazine more than 7 days, to achieve the same rate of nonmotility. Clearly, the viability of S. stercoralis larvae was significantly reduced when exposed to extracts of C. halicacabum. Further study is needed on the antiparasitic activity of aqueous and alcohol extracts of C. halicacabum against S. stercoralis.


Piperazine Ivermectin Alcohol Extract Anthelmintic Activity Strongyloidiasis 
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 study was supported in part by a grant from the Research Foundation of the Khon Kaen University. We gratefully acknowledge the Departments of Parasitology and Animals unit, Faculty of Medicine, Khon Kaen University.


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Copyright information

© Springer-Verlag 2005

Authors and Affiliations

  • T. Boonmars
    • 1
    Email author
  • W. Khunkitti
    • 2
  • P. Sithithaworn
    • 3
  • Y. Fujimaki
    • 4
  1. 1.Department of Parasitology, Faculty of MedicineKhon Kaen UniversityKhon KaenThailand
  2. 2.Department of Industrial Pharmacy, Faculty of Pharmaceutical SciencesKhon Kaen UniversityKhon KaenThailand
  3. 3.Department of Parasitology, Faculty of MedicineKhon Kaen UniversityKhon KaenThailand
  4. 4.Department of Parasitology, Institute of Tropical MedicineNagasaki UniversityNagasakiJapan

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