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?

被引:32
作者
Baelmans, R
Deharo, E [1 ]
Bourdy, G
Muñoz, V
Quenevo, C
Sauvain, M
Ginsburg, H
机构
[1] IRD, La Paz 9214, Bolivia
[2] IBBA, La Paz, Bolivia
[3] CIPTA, Dept La Paz, Ixiamas, Bolivia
[4] IRD, F-75010 Paris, France
[5] Hebrew Univ Jerusalem, Inst Life Sci, Dept Biol Chem, IL-91904 Jerusalem, Israel
关键词
antimalarial drugs; Bolivia; haemozoin; plant extracts; Plasmodium; polymerisation; tacana;
D O I
10.1016/S0378-8741(00)00330-5
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
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 & 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.
引用
收藏
页码:271 / 275
页数:5
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