Selected metabolite profiles during cytostasis induced by PfAdoMetDC/ODC co-inhibition. A, putrescine, spermidine, and 5-methylthioinosine levels decreased as expected, but cadaverine and spermine were too low for reliable detection. B, AdoMet and ornithine levels did not accumulate despite PfAdoMetDC/ODC co-inhibition, but ornithine enters glutamate metabolism via OAT, and the glutamate metabolites, α-ketoglutarate and GABA, increased.