Identification of potent lysophosphatidic acid receptor 5 (LPA5) antagonists as potential analgesic agents
摘要:
Lysophosphatidic acid (LPA) plays an important role in a variety of cellular functions. In particular, LPA5 receptor is highly expressed in spinal cord and dorsal root ganglion, which are associated with pain. This fact prompted us to hypothesize that LPA5 antagonists show analgesic effects. To search for potent LPA5 antagonists with blood brain barrier (BBB) permeability, we conducted high throughput screening (HTS). In HTS campaign, we found a 2H-isoquinoline-1-one scaffold showing antagonistic activity against LPA5 and synthesized a series of 2H-isoquinoline-1-one derivatives and evaluated their LPA5 activities. Among these compounds, compound 7e showed potent LPA5 activity with an IC50 value of 0.12 mu M, and acceptable BBB permeability. Furthermore, it showed effective analgesic effect in a chronic constriction injury rat model. Therefore, 7e may have a potential as novel pain therapeutic approach. (C) 2017 Elsevier Ltd. All rights reserved.
Composition tinctoriale comprenant une paraphénylènediamine tertiaire cationique et un coupleur hétérocyclique ou un hydroxybenzamide; procédés et utilisations
申请人:L'OREAL
公开号:EP1428510A1
公开(公告)日:2004-06-16
La présente demande a pour objet une composition tinctoriale pour la teinture des fibres kératiniques, en particulier des fibres kératiniques humaines telles que les cheveux, comprenant dans un milieu de teinture approprié au moins une paraphénylènediamine tertiaire cationique contenant un noyau pyrrolidinique et au moins un coupleur hétérocyclique particulier, ou un hydroxybenzamide.
L'invention a aussi pour objet le procédé de teinture mettant en oeuvre cette composition.