This also relates to potency comparisons.
12– 14 Conclusive demonstration of dual action for a hybrid drug species is challenging since simple potency comparisons are often ambiguous and difficult to interpret.
[14C]Phenylacetate was designed as a prototype tracer for the measurement of glial metabolism, and its potency in comparison with that of [14C]acetate was evaluated in this study.
Among all, compounds having Morpholine, N-methyl/phenyl/benzyl/pyrimidinyl piperazines and n-butylamine substitution at C-7 position, have shown increased potency in comparison to norfloxacin and ciprofloxacin.
Interestingly, 11 exhibited increased potency in comparison to 12 in the HK inhibition assays, perhaps suggesting that the aminobenzothiazole scaffold could be important in the development of HK inhibitors.
As shown in Fig. 5A, hygromycin carrying fUSE5-ZZ-chFRP5 phages inhibited target cell growth by 50%, (Fig. 5A treatment a), a >1000 fold improvement in hygromycin potency (in comparison to the free drug).
There can be no discussion that pharmacodiligence requires prospective studies, access to regulatory filings for controlled and monitored use of drugs, and some sense of relative potency for comparison between different drug entities.
Previously, Francis et al. tested peptide spacing in a series of branched PIE12-trimers using PEG linkers of various lengths, and they found that the PEG4 linker resulted in the most improved antiviral potency in comparison with PEG2, PEG3, and PEG5 linkers.
Despite its relatively low glucocorticoid potency in comparison with synthetic fluorinated derivatives (e.g. dexamethasone, betamethasone, flumethasone or isoflupredone), prednisolone is still widely used in cattle, including dairy cows, particularly for its effectiveness in the treatment of mastitis, in conjunction with antimicrobial drugs [ 2, 3].
