PMID- 29480583 OWN - NLM STAT- MEDLINE DCOM- 20200518 LR - 20200518 IS - 1369-1600 (Electronic) IS - 1355-6215 (Linking) VI - 24 IP - 3 DP - 2019 May TI - Stress augments the rewarding memory of cocaine via the activation of brainstem-reward circuitry. PG - 509-521 LID - 10.1111/adb.12617 [doi] AB - Effects of stress on the reward system are well established in the literature. Although previous studies have revealed that stress can reinstate extinguished addictive behaviors related to cocaine, the effects of stress on the rewarding memory of cocaine are not fully understood. Here, we provide evidence that stress potentiates the expression of rewarding memory of cocaine via the activation of brainstem-reward circuitry using a cocaine-induced conditioned place preference (CPP) paradigm combined with restraint stress in rats. The rats exposed to 30-minute restraint stress immediately before posttest exhibited significantly larger CPP scores compared with non-stressed rats. Intra-laterodorsal tegmental nucleus (LDT) microinjection of a beta or alpha2 adrenoceptor antagonist attenuated the stress-induced enhancement of cocaine CPP. Consistent with this observation, intra-LDT microinjection of a beta or alpha2 adrenoceptor agonist before posttest increased cocaine CPP. Additionally, intra-ventral tegmental area (VTA) microinjection of antagonists for the muscarinic acetylcholine, nicotinic acetylcholine or glutamate receptors attenuated the stress-induced enhancement of cocaine CPP. Finally, intra-medial prefrontal cortex (mPFC) microinjection of a D1 receptor antagonist also reduced the stress-induced enhancement of cocaine CPP. These findings suggest a mechanism wherein the LDT is activated by noradrenergic input from the locus coeruleus, leading to the activation of VTA dopamine neurons via both cholinergic and glutamatergic transmission and the subsequent excitation of the mPFC to enhance the memory of cocaine-induced reward value. CI - (c) 2018 Society for the Study of Addiction. FAU - Shinohara, Fumiya AU - Shinohara F AD - Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Hokkaido University, Sapporo, Japan. FAU - Asaoka, Yuta AU - Asaoka Y AD - Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Hokkaido University, Sapporo, Japan. FAU - Kamii, Hironori AU - Kamii H AD - Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Hokkaido University, Sapporo, Japan. AD - Laboratory of Molecular Pharmacology, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan. FAU - Minami, Masabumi AU - Minami M AD - Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Hokkaido University, Sapporo, Japan. FAU - Kaneda, Katsuyuki AU - Kaneda K AUID- ORCID: 0000-0001-7046-9275 AD - Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Hokkaido University, Sapporo, Japan. AD - Laboratory of Molecular Pharmacology, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan. LA - eng GR - The Natio Foundation/International GR - Hoansha Foundation/International GR - 15K06765/Grant-in-Aid for Scientific Research (C)/International GR - 26120702/Grant-in-Aid for Scientific Research on Innovative Areas/International PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20180226 PL - United States TA - Addict Biol JT - Addiction biology JID - 9604935 RN - 0 (Adrenergic alpha-Antagonists) RN - 0 (Dopamine Uptake Inhibitors) RN - 0 (Excitatory Amino Acid Antagonists) RN - 0 (Receptors, Adrenergic, alpha-2) RN - 0 (Receptors, Adrenergic, beta) RN - 817W3C6175 (Timolol) RN - E27LB7P0ET (2-methoxyidazoxan) RN - I5Y540LHVR (Cocaine) RN - Y310PA316B (Idazoxan) SB - IM MH - Adrenergic Neurons/drug effects MH - Adrenergic alpha-Antagonists/pharmacology MH - Animals MH - Brain Stem/drug effects MH - Cocaine/*pharmacology MH - Conditioning, Psychological/drug effects MH - Dopamine Uptake Inhibitors/*pharmacology MH - Excitatory Amino Acid Antagonists/pharmacology MH - Idazoxan/analogs & derivatives/pharmacology MH - Male MH - Memory/*drug effects MH - Rats, Sprague-Dawley MH - Receptors, Adrenergic, alpha-2/physiology MH - Receptors, Adrenergic, beta/physiology MH - Restraint, Physical MH - *Reward MH - Stress, Psychological/physiopathology MH - Tegmentum Mesencephali/drug effects MH - Timolol/pharmacology OTO - NOTNLM OT - addiction OT - dopamine OT - laterodorsal tegmental nucleus OT - medial prefrontal cortex OT - noradrenaline OT - ventral tegmental area EDAT- 2018/02/27 06:00 MHDA- 2020/05/19 06:00 CRDT- 2018/02/27 06:00 PHST- 2017/08/18 00:00 [received] PHST- 2018/01/09 00:00 [revised] PHST- 2018/02/06 00:00 [accepted] PHST- 2018/02/27 06:00 [pubmed] PHST- 2020/05/19 06:00 [medline] PHST- 2018/02/27 06:00 [entrez] AID - 10.1111/adb.12617 [doi] PST - ppublish SO - Addict Biol. 2019 May;24(3):509-521. doi: 10.1111/adb.12617. Epub 2018 Feb 26.