tetracycline and fanasil--pyrimethamine-drug-combination

A trial of drug regimens for treating Plasmodium falciparum malaria was conducted in a refugee camp in eastern Thailand where extensive 'Fansidar' (pyrimethamine-sulfadoxine) resistance had been demonstrated. The efficacy of quinine alone was compared to that of quinine combined with either fansidar or tetracycline. Quinine alone cleared the parasitaemia in 57 of 59 patients but failed to cure approximately one-third of these patients after 7 or 10 days of therapy. The addition of fansidar to quinine therapy did not significantly improve the overall cure rate. Tetracycline given for 10 days in combination with quinine cured all patients, suggesting that tetracycline should be considered in treating patients with falciparum malaria contracted in the area of the Thai-Kampuchean border.

Topics: Child; Drug Combinations; Drug Therapy, Combination; Humans; Malaria; Plasmodium falciparum; Pyrimethamine; Quinine; Sulfadoxine; Sulfanilamides; Tetracycline; Thailand

The effect of several antimalarial drugs, commonly used for prophylaxis and therapy of human malaria, on polymorphonuclear leukocyte chemotaxis was studied. A modified, reversible Boyden chamber method was used. Various concentrations of each drug was mixed with neutrophils and incubated in the chambers for 2 1/2 hours. After the incubation period percent inhibition of chemotaxis was determined. It was shown that chloroquine, quinine, proguanil, and tetracycline at concentrations frequently obtained in clinical situations significantly inhibited chemotaxis of neutrophils towards casein. There was a direct correlation between increasing drug concentration and percent inhibition of chemotaxis. Drugs such as pyrimethamine and fansidar at any concentration tested had no effect on chemotaxis.

Topics: Antimalarials; Chemotaxis, Leukocyte; Chloroquine; Drug Combinations; Humans; Neutrophils; Proguanil; Pyrimethamine; Quinine; Sulfadoxine; Tetracycline; Triazines

Topics: Adolescent; Chloroquine; Drug Administration Schedule; Drug Combinations; Drug Resistance, Microbial; Female; Humans; Malaria; Plasmodium falciparum; Pyrimethamine; Quinine; Sulfadoxine; Sulfanilamides; Tetracycline