Malaria prophylaxis in travellers: The current position

Summary Malaria prevention is a main challenge for physicians, nurses, health officers and tour operators. The attack rate of malaria in travellers is 1–10/10,000 departures, and the case fatality rate of imported malaria is around 0.5/100. Travellers should be informed about the risk they are going to take, how to protect against mosquito bites, about the antimalarials they will have to take and about what to do when a malaria breakthrough should occur.The 4-aminoquinolines (chloroquine, amodiaquine) remain the drug of choice for the prevention ofPlasmodium vivax and of sensitiveP. falciparum infections. The problem is to find an effective and safe drug combination for travellers to areas whereP. falciparum is either resistant to chloroquine, to Fansidar (the combination of pyrimethamine plus sulfadoxine) or to both. These travellers will probably best be protected by an individually tailored drug combination, which includes amodiaquine or mefloquine as baseline drugs, and a supplementation with Fansidar, Maloprim (the combination of pyrimethamine with dapsone), paludrine or an antibiotic.     

五种疟原虫红内期蛋白的SDS—聚丙烯酰胺电泳

本文用１％ＮＰ－４０提取五种疟的虫（间日疟原虫、恶性疟原虫、食蟹猴疟原虫、伯氏疟原虫、约氏疟原虫）红内期可溶性蛋白组分。各种蛋白提取物经ＳＤＳ－聚丙烯安电泳后氨银染色，所得蛋白图谱经光密度扫描进行分析。实验结果表明五种疟原虫蛋白区带数目及位置各不相同，但两条分子量分别为７２ＫＤ和６４ＫＤ蛋白为五种疟原虫共有区带。在五种疟原虫中，以伯多疟原虫与约氏疟原虫蛋白谱最类似，表明二者种间进化关系较接近。