作者
Alexander J Sandweiss, Mary I McIntosh, Aubin Moutal, Rachel Davidson-Knapp, Jackie Hu, Aswini K Giri, Takashi Yamamoto, Victor J Hruby, Rajesh Khanna, Tally M Largent-Milnes, Todd W Vanderah
发表日期
2018/8
期刊
Molecular psychiatry
卷号
23
期号
8
页码范围
1745-1755
出版商
Nature Publishing Group
简介
Development of an efficacious, non-addicting analgesic has been challenging. Discovery of novel mechanisms underlying addiction may present a solution. Here we target the neurokinin system, which is involved in both pain and addiction. Morphine exerts its rewarding actions, at least in part, by inhibiting GABAergic input onto substance P (SP) neurons in the ventral tegmental area (VTA), subsequently increasing SP release onto dopaminergic neurons. Genome editing of the neurokinin 1 receptor (NK 1 R) in the VTA renders morphine non-rewarding. Complementing our genetic approach, we demonstrate utility of a bivalent pharmacophore with dual activity as a μ/δ opioid agonist and NK 1 R antagonist in inhibiting nociception in an animal model of acute pain while lacking any positive reinforcement. These data indicate that dual targeting of the dopaminergic reward circuitry and pain pathways with a …
引用总数
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