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29: Merck90 | 30: Merck91 | 31: Bristol-Myers Squibb92 | 32: Bristol-Myers Squibb93 | |
hNaV1.1 IC50 | 9000 nMc,i | — | — | — |
hNaV1.5 IC50 | >33 000 nMc,i | >34 000 nMe,p | 1900 nMc,o | 6400 nMc,o |
hNaV1.7 IC50 | 66 nMe,i | 87 nMe,p | 4.0 nMe,j | 78 nMe,f |
Mouse NaV1.7 IC50 | 295 nM (rhesus)e,i | 8800 nMe,p | 7.5 nMe,j | 54 nMe,f, 34 nMq |
310 nM (rhesus)e,p | ||||
Mouse PPBb | 92.63% (rhesus) | 94%, 98% (rhesus) | 92% | 97.7%, 90%r |
NaV1.7 coverage in plasma@efficacious dosagea | 12-Fold, 42-fold@12.06, 24.12 mg kg−1 (i.v., rhesus OB) | 0.04-Fold@in vivo EC90 (mouse formalin) | >43-Fold@100 mg kg−1 | 14-Fold@100 mg kg−1 (mouse CCI) |
1.9-Fold@20 mg kg−1 (s.c., thermal stimulus in rhesus) | 4.8-Fold@19.2 mg kg−1 (rhesus OB) | >0.77-Fold@100 mg kg−1l (mouse formalin) | 0.5-Fold, 1-fold@30, 60 mg kg−1 (mouse CFA) | |
3-Fold@30 mg kg−1 | ||||
1-Fold@30 mg kg−1m (mouse formalin) |
NaV1.7 coverage = free plasma concentration/in vitro NaV1.7 IC50.
Plasma protein binding.
Value in the automated patch-clamp assay.
Value in an inactivated state.
Value in the manual patch-clamp assay.
Value at Vhold = −60 mV.
Calculated from Cmax of the PK study.
Value at a voltage yielding 20−50% channel inactivation.
Value at a voltage yielding approximately 20% channel inactivation.
Value at Vhold = −70 mV.
IC50 of mouse DRG NaV1.7.
The target coverage in the DRG given the plasma protein binding as an estimate of tissue binding.
NaV1.7 coverage in the DRG: free DRG concentration/in vitro IC50 of mouse DRG NaV1.7.
5-Hz use-dependent voltage protocol.
Value at Vhold = −50 mV.
Value under a hyperpolarised assay protocol.
IC50 of TTX-S currents in the mouse DRG.
Value of the mouse DRG.