Long-acting, repository antimalarial agents. Duration of protection in mice and monkeys following administration of pyrimethamine pamoate.
The duration of protection from blood-stage malarial challenge following single injections of pyrimethamine pamoate was assessed in mice and monkeys. This duration was dose-related and ranged from several weeks in mice to over 4 months in the monkeys. Comparisons with the previously reported repository drugs, cycloguanil pamoate and acedapsone (diacetyldiaminodiphenyl sulfone), in mice demonstrated that pyrimethamine pamoate provides an equal or greater duration of protection. Studies with mixtures containing acedapsone gave good protection against a pyrimethamine-resistant strain of Plasmodium berghei.
D000072:Acedapsone / Q000627:therapeutic use; D000818:Animals; D003622:Dapsone / Q000627:therapeutic use; D004338:Drug Combinations; D005260:Female; D007273:Injections, Intramuscular; D008252:Macaca fascicularis; D008288:Malaria / Q000517:prevention & control*; D008297:Male; D051379:Mice; D010962:Plasmodium berghei; D011739:Pyrimethamine / Q000008:administration & dosage / Q000009:adverse effects / Q000031:analogs & derivatives* / Q000627:therapeutic use* / Q000633:toxicity; D013997:Time Factors; D014227:Triazines / Q000627:therapeutic use
D004338:Drug Combinations; D014227:Triazines; D000072:Acedapsone; D003622:Dapsone; C042500:pyrimethamine pamoate; D011739:Pyrimethamine