A search for natural bioactive compounds in Bolivia through a multidisciplinary approach. Part IV. Is a new haem polymerisation inhibition test pertinent for the detection of antimalarial natural products?

R. Baelmans, E. Deharo, G. Bourdy, V. Muñoz, C. Quenevo, M. Sauvain, H. Ginsburg

Research output: Contribution to journalArticlepeer-review

41 Scopus citations

Abstract

The search for new antimalarial agents in plant crude extracts using traditional screening tests is time-consuming and expensive. New in vitro alternative techniques, based on specific metabolic or enzymatic process, have recently been developed to circumvent testing of antimalarial activity in parasite culture. The haem polymerisation inhibition test (HPIA) was proposed as a possible routine in vitro assay for the detection of antimalarial activity in natural products. A total of 178 plant extracts from the Pharmacopeia of the Bolivian ethnia Tacana, were screened for their ability to inhibit the polymerisation of haematin. Five extracts from Aloysia virgata (Ruiz and Pavon) A.L. Jussieu (Verbenaceae), Bixa orellana L. (Bixaceae), Caesalpinia pluviosa D.C. (Caesalpiniaceae), Mascagnia stannea (Griseb) Nied. (Malpighiaceae) and Trichilia pleenea (Adr. Jussieu) (Meliaceae) demonstrated more than 70% inhibition of haematin polymerisation at 2.5 mg/ml. The extracts were also tested for antimalarial activity in culture against F32 strain (chloroquine-sensitive) and D2 strain (chloroquine-resistant) of Plasmodium falciparum and in vivo against P. berghei. The extract from Caesalpinia pluviosa was the only one that showed activity in HPIA and in the classical test in culture. The accuracy and pertinence of HPIA, applied to natural products is discussed. (C) 2000 Published by Elsevier Science Ireland Ltd.

Original languageEnglish
Pages (from-to)271-275
Number of pages5
JournalJournal of Ethnopharmacology
Volume73
Issue number1-2
DOIs
StatePublished - 2000
Externally publishedYes

Bibliographical note

Funding Information:
The project was financed by the International Foundation for Science and the Institut de Recherche pour le Développement.

Keywords

  • Antimalarial drugs
  • Bolivia
  • Haemozoin
  • Plant extracts
  • Plasmodium
  • Polymerisation
  • Tacana

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