antihyperalgesic

Trimethadione (3,5,5-Trimethyloxazolidine-2,4-dione) is a dione-type anticonvulsant with antiepileptic activity.

Inosine (NSC-20262) is an endogenous purine nucleoside produced from the metabolic breakdown of adenosine. It is an agonist of adenosine receptors A1R and A2AR, possessing anti-inflammatory, immunomodulatory, cytoprotective, and neuroprotective effects, and can be used to establish hyperuricemia models.

PD 198306 is a selective inhibitor of MAPK ERK-kinase (MEK) with antihyperalgesic effects. PD 198306 reduces the Streptozocin-induced increase in the level of active ERK1.

SNC 80 (NIH 10815) is a potent, highly selective and non-peptide δ-opioid receptor agonist, Ki = 1.78 nM, IC50 = 2.73 nM. SNC80 also selectively activates μ-δ heteromer in HEK293 cells with an EC50 of 52.8 nM. SNC80 shows antinociceptive, antihyperalgesic and antidepressant‐like effects. SNC80 has the potential for multiple headache disorders treatment.

CLP257 is a selective K+-Cl− cotransporter KCC2 activator (EC50: 616 nM) and it is inactive against NKCC1, GABAA receptors, KCC1, KCC3 or KCC4. CLP257 alleviates hypersensitivity in rats with neuropathic painc and it also modulates plasmalemmal KCC2 protein turnover post-translationally. CLP257 restores impaired Cl− transport in neurons with diminished KCC2 activity.

MRS 1523 can exert an antihyperalgesic effect through N-type Ca channel block and action potential inhibition in isolated rat dorsal root ganglion (DRG) neurons. MRS 1523 is an effective and selective adenosine A3 receptor antagonist Ki: 18.9 nM and 113 n

PD-217014 is an α2δ ligand that exhibits visceral analgesic activity and can suppress visceral hypersensitivity. Its antihyperalgesic effects are dose-dependent.

Cytochrome P450 metabolism of polyunsaturated fatty acids produces numerous bioactive epoxide regioisomers. (±)10(11)-EpDPA is a docosahexaenoic acid epoxygenase metabolite, derived via epoxidation of the 10,11-double bond of DHA. It has been detected in rat brain and spinal cord, as well as human serum, and acts as a substrate for soluble epoxide hydrolase with a Km value of 5.1 μM. (±)10(11)-EpDPA and other epoxy metabolites of DHA are reported to demonstrate antihyperalgesic activity in inflammatory and neuropathic pain models and to potently inhibit angiogenesis and tumor growth in in vitro assays.

Cytochrome P450 metabolism of polyunsaturated fatty acids produces numerous bioactive epoxide regioisomers. (±)13(14)-EpDPA is a docosahexaenoic acid epoxygenase metabolite, derived via epoxidation of the 13,14-double bond of DHA. It has been detected in rat brain and spinal cord and is a preferred substrate for soluble epoxide hydrolase with a Km value of 3.2 μM. (±)13(14)-EpDPA demonstrates antihyperalgesic activity in inflammatory and neuropathic pain models. (±)13(14)-EpDPA and other epoxy metabolites of DHA are also reported to potently inhibit angiogenesis and tumor growth in in vitro assays.

1,7-Dihydroxy-2,3-methylenedioxyxanthone exhibits antiulcerogenic, anti-oxidation, and antihyperalgesic activities and can inhibit carrageenan-induced hyperalgesia.

(Rac)-SNC80, a racemate of SNC80 (NIH 10815), is a potent, highly selective non-peptide δ-opioid receptor agonist, characterized by a K_i of 1.78 nM and an IC_50 of 2.73 nM. Demonstrating antinociceptive, antihyperalgesic, and antidepressant-like effects, SNC80 holds potential for the treatment of multiple headache disorders [1] [2] [3] [4] [5] [6].

GW405833 hydrochloride, a potent and selective agonist of the cannabinoid-2 (CB2) receptor (EC 50 = 0.65 nM; maximum inhibition = 44.6%), exhibits significant antihyperalgesic effects in various rodent pain models [1] [2] [3].