PF-05198007 is a potent, orally active and selective arylsulfonamide Nav1.7 inhibitor. PF-05198007 is a compound with a similar pharmacodynamic profile to PF-05089771[1][2].
PF-05198007 (30 nM) blocks on average 83.0 ± 2.7% of the total TTX-S current indicating that the major TTX-S conductance is carried through Nav1.7 channels in small-diameter mouse DRG neurons (n = 35)[1].
PF-05198007 (1 or 10 mg/kg, orally) reduces the capsaicin flare response in WT, but not Nav1.7Nav1.8Cre mice[1].
| Animal Model: | Adult Male C57Bl/6J Wild type (WT) and Nav1.7Nav1.8Cre mice[1]. |
| Dosage: | 1 or 10 mg/kg. |
| Administration: | Orally once. |
| Result: | Reduced the flare response to capsaicin for the duration of the observation period (55 mins; Vehicle; 4930 ± 751 versus 1 and 10 mg/kg 1967 ± 472 and 2265 ± 382, respectively (n = 7), AUC, p < 0.05). |
[1]. Alexandrou AJ, et al. Subtype-Selective Small Molecule Inhibitors Reveal a Fundamental Role for Nav1.7 in Nociceptor Electrogenesis, Axonal Conduction and Presynaptic Release. PLoS One. 2016 Apr 6;11(4):e0152405.
[2]. Kushnarev M, et al. Neuropathic pain: preclinical and early clinical progress with voltage-gated sodium channel blockers. Expert Opin Investig Drugs. 2020 Mar;29(3):259-271.