The cellular mechanisms underlying B cell and antibody responses are difficult to study in human infections; therefore, we have investigated the kinetics, duration and characteristics of the Plasmodium-specific memory B cell response in an infection of P. chabaudi in mice.
Thirty-three N-acyl 1,2,4-dispiro trioxolanes (secondary ozonides) were synthesized. For these ozonides, weak base functional groups were not required for high antimalarial potency against Plasmodium falciparum in vitro, but were necessary for high antimalarial efficacy in Plasmodium berghei-infected mice. A wide range of Log P/DpH 7.4 values were tolerated, although more lipophilic ozonides tended to be less metabolically stable.
The PCR primers commonly used to detect Plasmodium knowlesi infections in humans were found to cross-react stochastically with P. vivax genomic DNA. A nested primer set that targets one of the P. knowlesi small-subunit rRNA genes was validated for specificity and for sensitivity of detection of <10 parasite genomes.
A series of original 4-aryl-substituted 2-trichloromethylquinazoline derivatives was synthesized using a microwave-assisted Suzuki-Miyaura cross-coupling approach.
A series of 4-aminoquinoline–triazine conjugates with different substitution pattern have been synthesized and evaluated for their in vitro antimalarial activity against chloroquine-sensitive and resistant strains of Plasmodium falciparum.
A high-throughput screening program identified two piperazine sulfonamides with activity against Plasmodium falciparum.
Two sets of diaminopyrimidines, totalling 45 compounds, were synthesized and assayed against Plasmodium falciparum.
These first generation azadipeptide nitriles represent a promising new class of compounds for antimalarial drug development.
N-Alkyl and N-(2-dialkylaminoethyl) derivatives of 5-amino-2-azabicyclo-nonanes were prepared and tested in vitro for their activities against the multidrug-resistant K1 strain of Plasmodium falciparum and Trypanosoma brucei rhodesiense (STIB 900).