Phosphodiesterase Inhibitors priority journal 10 article 8 nonhuman 8 phosphodiesterase inhibitor 8 Animals 6 controlled study 6 1-Methyl-3-isobutylxanthine 4 3',5'-Cyclic-Nucleotide Phosphodiesterase 4 Amino Acid Sequence 4 Animal 4 DNA, Protozoan 4 Etazolate 4 Eukaryota 4 Kinetics 4 Male 4 Molecular Sequence Data 4 Phosphodiesterase 4 Rats 4 Substrate Specificity 4 Trypanosoma cruzi 4 amino acid sequence 4 animal experiment 4 cell membrane 4 concentration (parameters) 4 cyclic AMP 4 enzyme inhibition 4 etazolate 4 isobutylmethylxanthine 4 male 4