Analgesic effects of ASP3662, a novel 11β-hydroxysteroid dehydrogenase 1 inhibitor, in rat models of neuropathic and dysfunctional pain

British Journal of Pharmacology
Tetsuo KisoShuichiro Kakimoto

Abstract

Glucocorticoids are a major class of stress hormones known to participate in stress-induced hyperalgesia. Although 11β-hydroxysteroid dehydrogenase 1 (11β-HSD1) is a key enzyme in the intracellular regeneration of glucocorticoids in the CNS, its role in pain perception has not been assessed. Here, we examined the effects of ASP3662, a novel 11β-HSD1 inhibitor, on neuropathic and dysfunctional pain. The enzyme inhibitory activities and pharmacokinetics of ASP3662 were examined, and its antinociceptive effects were evaluated in models of neuropathic pain, fibromyalgia and inflammatory pain in Sprague-Dawley rats. ASP3662 inhibited human, mouse and rat 11β-HSD1 but not human 11β-HSD2, in vitro. ASP3662 had no significant effect on 87 other possible targets (enzymes, transporters and receptors). ASP3662 inhibited in vitro conversion of glucocorticoid from its inactive to active form in extracts of rat brain and spinal cord. Pharmacokinetic analysis in Sprague-Dawley rats showed that ASP3662 has CNS-penetrability and long-lasting pharmacokinetic properties. Single oral administration of ASP3662 ameliorated mechanical allodynia in spinal nerve ligation (SNL) and streptozotocin-induced diabetic rats and thermal hyperalgesia in chronic...Continue Reading

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Citations

Mar 17, 2019·Journal of Nuclear Medicine : Official Publication, Society of Nuclear Medicine·Jean-Dominique GallezotYiyun Huang
Jul 16, 2021·Pharmacology & Therapeutics·Evelyne Silva BrumSara Marchesan Oliveira

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