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Beane CR, Lewis DG, Bruns Vi N, Pikus KL, Durfee MH, Zegarelli RA, Perry TW, Sandoval O, Radke AK. Cholinergic mu-opioid receptor deletion alters reward preference and aversion-resistance. Neuropharmacology 2024; 255:110019. [PMID: 38810926 DOI: 10.1016/j.neuropharm.2024.110019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 05/26/2024] [Accepted: 05/26/2024] [Indexed: 05/31/2024]
Abstract
The endogenous opioid system has been implicated in alcohol consumption and preference in both humans and animals. The mu opioid receptor (MOR) is expressed on multiple cells in the striatum, however little is known about the contributions of specific MOR populations to alcohol drinking behaviors. The current study used mice with a genetic deletion of MOR in cholinergic cells (ChAT-Cre/Oprm1fl/fl) to examine the role of MORs expressed in cholinergic interneurons (CINs) in home cage self-administration paradigms. Male and female ChAT-Cre/Oprm1fl/fl mice were generated and heterozygous Cre+ (knockout) and Cre- (control) mice were tested for alcohol consumption in two drinking paradigms: limited access "Drinking in the Dark" and intermittent access. Quinine was added to the drinking bottles in the DID experiment to test aversion-resistant, "compulsive" drinking. Nicotine and sucrose drinking were also assessed so comparisons could be made with other rewarding substances. Cholinergic MOR deletion did not influence consumption or preference for ethanol (EtOH) in either drinking task. Differences were observed in aversion-resistance in males with Cre + mice tolerating lower concentrations of quinine than Cre-. In contrast to EtOH, preference for nicotine was reduced following cholinergic MOR deletion while sucrose consumption and preference was increased in Cre+ (vs. Cre-) females. Locomotor activity was also greater in females following the deletion. These results suggest that cholinergic MORs participate in preference for rewarding substances. Further, while they are not required for consumption of alcohol alone, cholinergic MORs may influence the tendency to drink despite negative consequences.
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Affiliation(s)
- Cambria R Beane
- Department of Psychology and Center for Neuroscience and Behavior, Miami University, Oxford, OH, USA
| | - Delainey G Lewis
- Department of Psychology and Center for Neuroscience and Behavior, Miami University, Oxford, OH, USA
| | - Nicolaus Bruns Vi
- Department of Psychology and Center for Neuroscience and Behavior, Miami University, Oxford, OH, USA
| | - Kat L Pikus
- Department of Psychology and Center for Neuroscience and Behavior, Miami University, Oxford, OH, USA
| | - Mary H Durfee
- Department of Psychology and Center for Neuroscience and Behavior, Miami University, Oxford, OH, USA
| | - Roman A Zegarelli
- Department of Psychology and Center for Neuroscience and Behavior, Miami University, Oxford, OH, USA
| | - Thomas W Perry
- Department of Psychology and Center for Neuroscience and Behavior, Miami University, Oxford, OH, USA
| | - Oscar Sandoval
- Department of Psychology and Center for Neuroscience and Behavior, Miami University, Oxford, OH, USA
| | - Anna K Radke
- Department of Psychology and Center for Neuroscience and Behavior, Miami University, Oxford, OH, USA.
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Beane CR, Lewis DG, Bruns NK, Pikus KL, Durfee MH, Zegarelli RA, Perry TW, Sandoval O, Radke AK. Cholinergic mu-opioid receptor deletion alters reward preference and aversion-resistance. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2023.11.13.566881. [PMID: 38014065 PMCID: PMC10680803 DOI: 10.1101/2023.11.13.566881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2023]
Abstract
Heavy alcohol use and binge drinking are important contributors to alcohol use disorder (AUD). The endogenous opioid system has been implicated in alcohol consumption and preference in both humans and animals. The mu opioid receptor (MOR) is expressed on multiple cells in the striatum, however little is known about the contributions of specific MOR populations to alcohol drinking behaviors. The current study used mice with a genetic deletion of MOR in cholinergic cells (ChAT-Cre/Oprm1fl/fl) to examine the role of MORs expressed in cholinergic interneurons (CINs) in home cage self-administration paradigms. Male and female ChAT-Cre/Oprm1fl/fl mice were generated and heterozygous Cre+ (knockout) and Cre- (control) mice were tested for alcohol and nicotine consumption. In Experiment 1, binge-like and quinine-resistant drinking was tested using 15% ethanol (EtOH) in a two-bottle, limited-access Drinking in the Dark paradigm. Experiment 2 involved a six-week intermittent access paradigm in which mice received 20% EtOH, nicotine, and then a combination of the two drugs. Experiment 3 assessed locomotor activity, sucrose preference, and quinine sensitivity. Deleting MORs in cholinergic cells did not alter consumption of EtOH in Experiment 1 or 2. In Experiment 1, the MOR deletion resulted in greater consumption of quinine-adulterated EtOH in male Cre+ mice (vs. Cre-). In Experiment 2, Cre+ mice demonstrated a significantly lower preference for nicotine but did not differ from Cre- mice in nicotine or nicotine + EtOH consumption. Overall fluid consumption was also heightened in the Cre+ mice. In Experiment 3, Cre+ females were found to have greater locomotor activity and preference for sucrose vs. Cre- mice. These data suggest that cholinergic MORs are not required for EtOH, drinking behaviors but may contribute to aversion resistant EtOH drinking in a sex-dependent manner.
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Henderson BJ, Tetteh-Quarshie S, Olszewski NA. Modulators of nicotine reward and reinforcement. ADVANCES IN PHARMACOLOGY (SAN DIEGO, CALIF.) 2024; 99:355-386. [PMID: 38467487 DOI: 10.1016/bs.apha.2023.10.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/13/2024]
Abstract
Nicotine has been well-characterized for its ability to alter neurophysiology to promote rewarding and reinforcing properties. However, several exogenous chemicals possess properties that modulate or enhance nicotine's ability to alter neurophysiology. This chapter focuses on nicotine's impact on behavior through changes in neurophysiology and several chemical entities that in-turn modulate nicotine's ability to act as a neuromodulator.
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Affiliation(s)
- Brandon J Henderson
- Department of Biomedical Sciences, Joan C. Edwards School of Medicine at Marshall University, Huntington, WV, United States.
| | - Samuel Tetteh-Quarshie
- Department of Biomedical Sciences, Joan C. Edwards School of Medicine at Marshall University, Huntington, WV, United States
| | - Nathan A Olszewski
- Department of Biomedical Sciences, Joan C. Edwards School of Medicine at Marshall University, Huntington, WV, United States
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Abstract
Diseases associated with nicotine dependence in the form of habitual tobacco use are a major cause of premature death in the United States. The majority of tobacco smokers will relapse within the first month of attempted abstinence. Smoking cessation agents increase the likelihood that smokers can achieve long-term abstinence. Nevertheless, currently available smoking cessation agents have limited utility and fail to prevent relapse in the majority of smokers. Pharmacotherapy is therefore an effective strategy to aid smoking cessation efforts but considerable risk of relapse persists even when the most efficacious medications currently available are used. The past decade has seen major breakthroughs in our understanding of the molecular, cellular, and systems-level actions of nicotine in the brain that contribute to the development and maintenance of habitual tobacco use. In parallel, large-scale human genetics studies have revealed allelic variants that influence vulnerability to tobacco use disorder. These advances have revealed targets for the development of novel smoking cessation agents. Here, we summarize current efforts to develop smoking cessation therapeutics and highlight opportunities for future efforts.
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Affiliation(s)
- Dana Lengel
- Nash Family Department of Neuroscience, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Paul J. Kenny
- Nash Family Department of Neuroscience, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Drug Discovery Institute (DDI), Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
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Teague CD, Picone JA, Wright WJ, Browne CJ, Silva GM, Futamura R, Minier-Toribio A, Estill ME, Ramakrishnan A, Martinez-Rivera FJ, Godino A, Parise EM, Schmidt KH, Pulido NV, Lorsch ZS, Kim JH, Shen L, Neve RL, Dong Y, Nestler EJ, Hamilton PJ. CREB Binding at the Zfp189 Promoter Within Medium Spiny Neuron Subtypes Differentially Regulates Behavioral and Physiological Adaptations Over the Course of Cocaine Use. Biol Psychiatry 2023; 93:502-511. [PMID: 36253194 PMCID: PMC9899288 DOI: 10.1016/j.biopsych.2022.07.022] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 06/06/2022] [Accepted: 07/05/2022] [Indexed: 02/06/2023]
Abstract
BACKGROUND Over the course of chronic drug use, brain transcriptional neuroadaptation is thought to contribute to a change in drug use behavior over time. The function of the transcription factor CREB (cAMP response element binding protein) within the nucleus accumbens (NAc) has been well documented in opposing the rewarding properties of many classes of drugs, yet the gene targets through which CREB causally manifests these lasting neuroadaptations remain unknown. Here, we identify zinc finger protein 189 (Zfp189) as a CREB target gene that is transcriptionally responsive to acute and chronic cocaine use within the NAc of mice. METHODS To investigate the role of the CREB-Zfp189 interaction in cocaine use, we virally delivered modified clustered regularly interspaced short palindromic repeats (CRISPR)/dCas9 constructs capable of selectively localizing CREB to the Zfp189 gene promoter in the NAc of mice. RESULTS We observed that CREB binding to the Zfp189 promoter increased Zfp189 expression and diminished the reinforcing responses to cocaine. Furthermore, we showed that NAc Zfp189 expression increased within D1 medium spiny neurons in response to acute cocaine but increased in both D1- and D2-expressing medium spiny neurons in response to chronic cocaine. CREB-mediated induction of Zfp189 potentiated electrophysiological activity of D1- and D2-expressing medium spiny neurons, recapitulating the known effect of CREB on these neurons. Finally, targeting CREB to the Zfp189 promoter within NAc Drd2-expressing neurons, but not Drd1-expressing neurons, was sufficient to diminish cocaine-conditioned behaviors. CONCLUSIONS Together, these findings point to the CREB-Zfp189 interaction within the NAc Drd2+ neurons as a molecular signature of chronic cocaine use that is causal in counteracting the reinforcing effects of cocaine.
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Affiliation(s)
- Collin D Teague
- Nash Family Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Joseph A Picone
- Department of Anatomy and Neurobiology, Virginia Commonwealth University School of Medicine, Richmond, Virginia
| | - William J Wright
- Department of Neuroscience, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Caleb J Browne
- Nash Family Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Gabriella M Silva
- Department of Anatomy and Neurobiology, Virginia Commonwealth University School of Medicine, Richmond, Virginia
| | - Rita Futamura
- Nash Family Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Angélica Minier-Toribio
- Nash Family Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Molly E Estill
- Nash Family Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Aarthi Ramakrishnan
- Nash Family Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Freddyson J Martinez-Rivera
- Nash Family Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Arthur Godino
- Nash Family Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Eric M Parise
- Nash Family Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Kyra H Schmidt
- Nash Family Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Nathalia V Pulido
- Nash Family Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Zachary S Lorsch
- Nash Family Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Jee Hyun Kim
- Nash Family Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, New York; The Institute for Mental and Physical Health and Clinical Translation, School of Medicine, Deakin University, Geelong, Australia
| | - Li Shen
- Nash Family Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Rachael L Neve
- Gene Delivery Technology Core, Massachusetts General Hospital, Cambridge, Massachusetts
| | - Yan Dong
- Department of Neuroscience, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Eric J Nestler
- Nash Family Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Peter J Hamilton
- Department of Anatomy and Neurobiology, Virginia Commonwealth University School of Medicine, Richmond, Virginia.
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Ding Y, Zhou M, Zheng R, Ma R, Deng J, Hao WZ, Wang L, Zhang JC, Ho CT, Huang JQ. Feruloylated oligosaccharides ameliorate MPTP-induced neurotoxicity in mice by activating ERK/CREB/BDNF/TrkB signalling pathway. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2023; 108:154512. [PMID: 36288652 DOI: 10.1016/j.phymed.2022.154512] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2022] [Revised: 10/05/2022] [Accepted: 10/16/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND Feruloylated oligosaccharides (FOs) are natural esterification products of ferulic acid and oligosaccharides. STUDY DESIGN In this study, we examined whether FOs contribute to the ensured survival of nigrostriatal dopamine neurons and inhibition of neuroinflammation in Parkinson's disease (PD). METHODS 1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP, 30 mg/kg) was injected intraperitoneally into mice to establish a Parkinson's disease (PD) mouse model. FOs (15 and 30 mg/kg) were orally administered daily to the MPTP-treated mice. The rotarod test, balance beam test, immunofluorescence, enzyme-linked immunosorbent assay (ELISA), quantitative PCR (qPCR), and western blot analyses were performed to examine the neuroprotective effects of FOs on MPTP-treated mice. RESULTS Our study indicated that FOs increased the survival of dopamine neurons in the substantia nigra pars compacta (SNc) of the MPTP-treated mice. The neuroprotective effects of FOs were accompanied by inhibited glial activation and reduced inflammatory cytokine production. The mechanistic experiments revealed that the neuroprotective effects of FOs might be mediated through the activation of the ERK/CREB/BDNF/TrkB signalling pathway. CONCLUSION This study provides new insights into the mechanism underlying the anti-neuroinflammatory effect of phytochemicals and may facilitate the development of dietary supplements for PD patients. Our results indicate that FOs can be used as potential modulators for the prevention and treatment of PD.
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MESH Headings
- Mice
- Animals
- 1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine/metabolism
- 1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine/pharmacology
- 1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine/therapeutic use
- Brain-Derived Neurotrophic Factor/metabolism
- Parkinson Disease/drug therapy
- Parkinson Disease/metabolism
- Neuroprotective Agents/pharmacology
- Neuroprotective Agents/therapeutic use
- Mice, Inbred C57BL
- MPTP Poisoning/drug therapy
- MPTP Poisoning/metabolism
- MPTP Poisoning/prevention & control
- Dopaminergic Neurons
- Disease Models, Animal
- Oligosaccharides/pharmacology
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Affiliation(s)
- Yiru Ding
- Department of Physiology, School of Medicine, Jinan University, Guangzhou 510632, China
| | - Meiyu Zhou
- Department of Physiology, School of Medicine, Jinan University, Guangzhou 510632, China
| | - Ruoyin Zheng
- Department of Physiology, School of Medicine, Jinan University, Guangzhou 510632, China
| | - Ruijia Ma
- Department of Physiology, School of Medicine, Jinan University, Guangzhou 510632, China
| | - Jialin Deng
- Department of Physiology, School of Medicine, Jinan University, Guangzhou 510632, China
| | - Wen-Zhi Hao
- Guangzhou Key Laboratory of Formula-pattern Research Center, School of Traditional Chinese Medicine, Jinan University, No. 601, West Huangpu Avenue, Guangzhou 510632, China
| | - Lu Wang
- Guangzhou Key Laboratory of Formula-pattern Research Center, School of Traditional Chinese Medicine, Jinan University, No. 601, West Huangpu Avenue, Guangzhou 510632, China
| | - Ji-Chun Zhang
- Department of Physiology, School of Medicine, Jinan University, Guangzhou 510632, China.
| | - Chi-Tang Ho
- Department of Food Science, Rutgers University, NJ 08901, USA.
| | - Jun-Qing Huang
- Guangzhou Key Laboratory of Formula-pattern Research Center, School of Traditional Chinese Medicine, Jinan University, No. 601, West Huangpu Avenue, Guangzhou 510632, China.
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Fan L, Chen H, Liu Y, Hou H, Hu Q. ERK signaling is required for nicotine-induced conditional place preference by regulating neuroplasticity genes expression in male mice. Pharmacol Biochem Behav 2023; 222:173510. [PMID: 36565790 DOI: 10.1016/j.pbb.2022.173510] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 12/12/2022] [Accepted: 12/13/2022] [Indexed: 12/24/2022]
Abstract
Nicotine is an addictive compound that interacts with nicotinic acetylcholine receptors (nAChRs) in the ventral tegmental area (VTA), inducing a release of dopamine in the nucleus accumbens (NAc). When neurons undergo repeated exposure to nicotine, several adaptive changes in neuroplasticity occur. Activation of nAChRs involves numerous intracellular signaling cascades that likely contribute to neuroplasticity and ultimately the establishment of nicotine addiction. Nevertheless, the molecular mechanisms underlying this adaptation remain unclear. To explore the effects of nicotine on neuroplasticity, a stable nicotine-induced conditioned place preference (CPP) model was constructed by intravenous injection in mice. Using a PCR array, we observed significant changes in the expression of synaptic plasticity-related genes in the VTA (16 mRNAs) and NAc (40 mRNAs). When mice were pre-treated with PD98059, an extracellular signal-regulated kinase (ERK) inhibitor, more gene expression changes in the VTA (53 mRNAs) and NAc (60 mRNAs) were found. Moreover, PD98059 pre-treatment blocked the increased p-ERK/ERK and p-CREB/CREB ratios and decreased the expression of synaptic plasticity-related proteins such as SAP102, PSD95, synaptophysin, and BDNF, these changes might contribute to preventing the establishment of nicotine-induced CPP. Furthermore, neurons from the VTA and NAc of nicotine CPP mice had an increased dendritic spine density and complexity of dendritic morphology by Golgi staining. PD98059 also blocked this dynamic. These results demonstrate that repeated exposure to nicotine may remold the expression of neuroplasticity-related genes by activating the ERK signaling pathway in the VTA and NAc, and is related to the establishment of nicotine-induced CPP.
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Affiliation(s)
- Lei Fan
- Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui, PR China; University of Science and Technology of China, Hefei, PR China; China National Tobacco Quality Supervision & Test Center, Zhengzhou, PR China; Key Laboratory of Tobacco Biological Effects, Zhengzhou, PR China; Beijing Institute of Life Science and Technology, Beijing, China; Key Labortory of Tobacco Biological Effects and Biosynthesis, Beijing, China
| | - Huan Chen
- China National Tobacco Quality Supervision & Test Center, Zhengzhou, PR China; Key Laboratory of Tobacco Biological Effects, Zhengzhou, PR China; Beijing Institute of Life Science and Technology, Beijing, China; Key Labortory of Tobacco Biological Effects and Biosynthesis, Beijing, China
| | - Yong Liu
- Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui, PR China; University of Science and Technology of China, Hefei, PR China.
| | - Hongwei Hou
- China National Tobacco Quality Supervision & Test Center, Zhengzhou, PR China; Key Laboratory of Tobacco Biological Effects, Zhengzhou, PR China; Beijing Institute of Life Science and Technology, Beijing, China; Key Labortory of Tobacco Biological Effects and Biosynthesis, Beijing, China.
| | - Qingyuan Hu
- China National Tobacco Quality Supervision & Test Center, Zhengzhou, PR China; Key Laboratory of Tobacco Biological Effects, Zhengzhou, PR China; Beijing Institute of Life Science and Technology, Beijing, China; Key Labortory of Tobacco Biological Effects and Biosynthesis, Beijing, China.
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Arketamine, a new rapid-acting antidepressant: A historical review and future directions. Neuropharmacology 2022; 218:109219. [PMID: 35977629 DOI: 10.1016/j.neuropharm.2022.109219] [Citation(s) in RCA: 42] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 08/07/2022] [Accepted: 08/09/2022] [Indexed: 12/16/2022]
Abstract
The N-methyl-d-aspartate receptor (NMDAR) antagonist (R,S)-ketamine causes rapid onset and sustained antidepressant actions in treatment-resistant patients with major depressive disorder (MDD) and other psychiatric disorders, such as bipolar disorder and post-traumatic stress disorder. (R,S)-ketamine is a racemic mixture consisting of (R)-ketamine (or arketamine) and (S)-ketamine (or esketamine), with (S)-enantiomer having greater affinity for the NMDAR. In 2019, an esketamine nasal spray by Johnson & Johnson was approved in the USA and Europe for treatment-resistant depression. In contrast, an increasing number of preclinical studies show that arketamine has greater potency and longer-lasting antidepressant-like effects than esketamine in rodents, despite the lower binding affinity of arketamine for the NMDAR. Importantly, the side effects, i.e., psychotomimetic and dissociative effects and abuse liability, of arketamine are less than those of (R,S)-ketamine and esketamine in animals and humans. An open-label study demonstrated the rapid and sustained antidepressant effects of arketamine in treatment-resistant patients with MDD. A phase 2 clinical trial of arketamine in treatment-resistant patients with MDD is underway. This study was designed to review the brief history of the novel antidepressant arketamine, the molecular mechanisms underlying its antidepressant actions, and future directions.
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Custodio L, Malone S, Bardo MT, Turner JR. Nicotine and opioid co-dependence: Findings from bench research to clinical trials. Neurosci Biobehav Rev 2022; 134:104507. [PMID: 34968525 PMCID: PMC10986295 DOI: 10.1016/j.neubiorev.2021.12.030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 12/17/2021] [Accepted: 12/19/2021] [Indexed: 10/19/2022]
Abstract
Concomitant use of tobacco and opioids represents a growing public health concern. In fact, the mortality rate due to smoking-related illness approaches 50% among SUD patients. Cumulative evidence demonstrates that the vulnerability to drugs of abuse is influenced by behavioral, environmental, and genetic factors. This review explores the contribution of genetics and neural mechanisms influencing nicotine and opioid reward, respiration, and antinociception, emphasizing the interaction of cholinergic and opioid receptor systems. Despite the substantial evidence demonstrating nicotine-opioid interactions within the brain and on behavior, the currently available pharmacotherapies targeting these systems have shown limited efficacy for smoking cessation on opioid-maintained smokers. Thus, further studies designed to identify novel targets modulating both nicotinic and opioid receptor systems may lead to more efficacious approaches for co-morbid nicotine dependence and opioid use disorder.
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Affiliation(s)
- Lilian Custodio
- Department of Pharmaceutical Sciences, University of Kentucky, Lexington, KY, USA
| | - Samantha Malone
- Department of Psychology, University of Kentucky, Lexington, KY, USA
| | - Michael T Bardo
- Department of Psychology, University of Kentucky, Lexington, KY, USA
| | - Jill R Turner
- Department of Pharmaceutical Sciences, University of Kentucky, Lexington, KY, USA.
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Eacret D, Noreck J, Blendy J. Adenosine Monophosphate-activated Protein Kinase (AMPK) in serotonin neurons mediates select behaviors during protracted withdrawal from morphine in mice. Behav Brain Res 2022; 419:113688. [PMID: 34843742 PMCID: PMC8688336 DOI: 10.1016/j.bbr.2021.113688] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 11/11/2021] [Accepted: 11/23/2021] [Indexed: 01/02/2023]
Abstract
Serotonin neurotransmission has been implicated in behavior deficits that occur during protracted withdrawal from opioids. In addition, studies have highlighted multiple pathways whereby serotonin (5-HT) modulates energy homeostasis, however the underlying metabolic effects of opioid withdrawal have not been investigated. A key metabolic regulator that senses the energy status of the cell and regulates fuel availability is Adenosine Monophosphate-activated Protein Kinase (AMPK). To investigate the interaction between cellular metabolism and serotonin in modulating protracted abstinence from morphine, we depleted AMPK in serotonin neurons. Morphine exposure via drinking water generates dependence in these mice, and both wildtype and serotonergic AMPK knockout mice consume similar amounts of morphine with no changes in body weight. Serotonergic AMPK contributes to baseline differences in open field and social interaction behaviors and blocks abstinence induced reductions in immobility following morphine withdrawal in the tail suspension test. Lastly, morphine locomotor sensitization is blunted in mice lacking AMPK in serotonin neurons. Taken together, our results suggest serotonergic AMPK mediates both baseline and protracted morphine withdrawal-induced behaviors.
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Affiliation(s)
- D. Eacret
- Department of Systems Pharmacology and Translational Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - J. Noreck
- Department of Systems Pharmacology and Translational Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - J.A. Blendy
- Department of Systems Pharmacology and Translational Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA,Corresponding author , Phone: (215) 898-0730, Fax: (215) 573-2236
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11
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Tobacco smoking is associated with more pain and worse functional outcomes after torsional ankle fracture. OTA Int 2022; 5:e175. [PMID: 35059563 PMCID: PMC8765575 DOI: 10.1097/oi9.0000000000000175] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Accepted: 12/18/2021] [Indexed: 11/30/2022]
Abstract
Objective: The purpose of this study was to assess the impact of current and remote tobacco smoking on clinical and functional outcomes after torsional ankle fracture. Methods: Nine hundred thirty-five patients treated surgically for torsional ankle fracture over 9 years were reviewed. Tobacco smoking status at the time of injury was defined as current (48.3%), former (11.7%), and nonsmoker (40.0%). Complications, unplanned secondary procedures, pain medication use, and functional outcome scores, as measured by Foot Function Index and Short Musculoskeletal Function Assessment (SMFA) surveys. Results: Mean age was 44.8 years, with 50.3% male. More than 6 months following injury current smokers were more likely than former smokers and nonsmokers to report ankle pain (67.8% vs 45.8% vs 47.5%) and to use prescription pain medicines (23.0% vs 10.4% vs 6.3%), all P < .05. Multiple logistic regression found current tobacco use to be an independent predictor for prescription pain medication use, and worse scores for the Foot Function Index, SMFA Dysfunction, and SMFA Bothersome scores, all P < .05. Complications occurred in 15.5% of all patients, and 10.7% underwent unplanned secondary operations. Tobacco smoking was not associated with more complications or secondary procedures. Conclusion: Current smokers are more likely to use prescription pain medications several months after injury and have worse patient-reported functional outcome scores after surgical treatment of torsional ankle fractures than former smokers and nonsmokers.
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12
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Wills L, Ables JL, Braunscheidel KM, Caligiuri SPB, Elayouby KS, Fillinger C, Ishikawa M, Moen JK, Kenny PJ. Neurobiological Mechanisms of Nicotine Reward and Aversion. Pharmacol Rev 2022; 74:271-310. [PMID: 35017179 PMCID: PMC11060337 DOI: 10.1124/pharmrev.121.000299] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Accepted: 08/24/2021] [Indexed: 12/27/2022] Open
Abstract
Neuronal nicotinic acetylcholine receptors (nAChRs) regulate the rewarding actions of nicotine contained in tobacco that establish and maintain the smoking habit. nAChRs also regulate the aversive properties of nicotine, sensitivity to which decreases tobacco use and protects against tobacco use disorder. These opposing behavioral actions of nicotine reflect nAChR expression in brain reward and aversion circuits. nAChRs containing α4 and β2 subunits are responsible for the high-affinity nicotine binding sites in the brain and are densely expressed by reward-relevant neurons, most notably dopaminergic, GABAergic, and glutamatergic neurons in the ventral tegmental area. High-affinity nAChRs can incorporate additional subunits, including β3, α6, or α5 subunits, with the resulting nAChR subtypes playing discrete and dissociable roles in the stimulatory actions of nicotine on brain dopamine transmission. nAChRs in brain dopamine circuits also participate in aversive reactions to nicotine and the negative affective state experienced during nicotine withdrawal. nAChRs containing α3 and β4 subunits are responsible for the low-affinity nicotine binding sites in the brain and are enriched in brain sites involved in aversion, including the medial habenula, interpeduncular nucleus, and nucleus of the solitary tract, brain sites in which α5 nAChR subunits are also expressed. These aversion-related brain sites regulate nicotine avoidance behaviors, and genetic variation that modifies the function of nAChRs in these sites increases vulnerability to tobacco dependence and smoking-related diseases. Here, we review the molecular, cellular, and circuit-level mechanisms through which nicotine elicits reward and aversion and the adaptations in these processes that drive the development of nicotine dependence. SIGNIFICANCE STATEMENT: Tobacco use disorder in the form of habitual cigarette smoking or regular use of other tobacco-related products is a major cause of death and disease worldwide. This article reviews the actions of nicotine in the brain that contribute to tobacco use disorder.
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Affiliation(s)
- Lauren Wills
- Nash Family Department of Neuroscience, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, New York, New York
| | - Jessica L Ables
- Nash Family Department of Neuroscience, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, New York, New York
| | - Kevin M Braunscheidel
- Nash Family Department of Neuroscience, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, New York, New York
| | - Stephanie P B Caligiuri
- Nash Family Department of Neuroscience, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, New York, New York
| | - Karim S Elayouby
- Nash Family Department of Neuroscience, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, New York, New York
| | - Clementine Fillinger
- Nash Family Department of Neuroscience, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, New York, New York
| | - Masago Ishikawa
- Nash Family Department of Neuroscience, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, New York, New York
| | - Janna K Moen
- Nash Family Department of Neuroscience, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, New York, New York
| | - Paul J Kenny
- Nash Family Department of Neuroscience, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, New York, New York
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13
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Fisher ML, Pauly JR, Froeliger B, Turner JR. Translational Research in Nicotine Addiction. Cold Spring Harb Perspect Med 2021; 11:cshperspect.a039776. [PMID: 32513669 DOI: 10.1101/cshperspect.a039776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
While commendable strides have been made in reducing smoking initiation and improving smoking cessation rates, current available smoking cessation treatment options are still only mildly efficacious and show substantial interindividual variability in their therapeutic responses. Therefore, the primary goal of preclinical research has been to further the understanding of the neural substrates and genetic influences involved in nicotine's effects and reassess potential drug targets. Pronounced advances have been made by investing in new translational approaches and placing more emphasis on bridging the gap between human and rodent models of dependence. Functional neuroimaging studies have identified key brain structures involved with nicotine-dependence phenotypes such as craving, impulsivity, withdrawal symptoms, and smoking cessation outcomes. Following up with these findings, rodent-modeling techniques have made it possible to dissect the neural circuits involved in these motivated behaviors and ascertain mechanisms underlying nicotine's interactive effects on brain structure and function. Likewise, translational studies investigating single-nucleotide polymorphisms (SNPs) within the cholinergic, dopaminergic, and opioid systems have found high levels of involvement of these neurotransmitter systems in regulating the reinforcing aspects of nicotine in both humans and mouse models. These findings and coordinated efforts between human and rodent studies pave the way for future work determining gene by drug interactions and tailoring treatment options to each individual smoker.
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Affiliation(s)
- Miranda L Fisher
- Department of Pharmaceutical Sciences, University of Kentucky College of Pharmacy, Lexington, Kentucky 40536-0596, USA
| | - James R Pauly
- Department of Pharmaceutical Sciences, University of Kentucky College of Pharmacy, Lexington, Kentucky 40536-0596, USA
| | - Brett Froeliger
- Department of Neuroscience, Medical University of South Carolina, Charleston, South Carolina 29425, USA
| | - Jill R Turner
- Department of Pharmaceutical Sciences, University of Kentucky College of Pharmacy, Lexington, Kentucky 40536-0596, USA
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14
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Kemény LV, Robinson KC, Hermann AL, Walker DM, Regan S, Yew YW, Lai YC, Theodosakis N, Rivera PD, Ding W, Yang L, Beyer T, Loh YHE, Lo JA, van der Sande AAJ, Sarnie W, Kotler D, Hsiao JJ, Su MY, Kato S, Kotler J, Bilbo SD, Chopra V, Salomon MP, Shen S, Hoon DSB, Asgari MM, Wakeman SE, Nestler EJ, Fisher DE. Vitamin D deficiency exacerbates UV/endorphin and opioid addiction. SCIENCE ADVANCES 2021; 7:7/24/eabe4577. [PMID: 34117054 PMCID: PMC8195487 DOI: 10.1126/sciadv.abe4577] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2020] [Accepted: 04/26/2021] [Indexed: 06/12/2023]
Abstract
The current opioid epidemic warrants a better understanding of genetic and environmental factors that contribute to opioid addiction. Here we report an increased prevalence of vitamin D (VitD) deficiency in patients diagnosed with opioid use disorder and an inverse and dose-dependent association of VitD levels with self-reported opioid use. We used multiple pharmacologic approaches and genetic mouse models and found that deficiencies in VitD signaling amplify exogenous opioid responses that are normalized upon restoration of VitD signaling. Similarly, physiologic endogenous opioid analgesia and reward responses triggered by ultraviolet (UV) radiation are repressed by VitD signaling, suggesting that a feedback loop exists whereby VitD deficiency produces increased UV/endorphin-seeking behavior until VitD levels are restored by cutaneous VitD synthesis. This feedback may carry the evolutionary advantage of maximizing VitD synthesis. However, unlike UV exposure, exogenous opioid use is not followed by VitD synthesis (and its opioid suppressive effects), contributing to maladaptive addictive behavior.
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Affiliation(s)
- Lajos V Kemény
- Cutaneous Biology Research Center, Department of Dermatology and Cancer Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Kathleen C Robinson
- Cutaneous Biology Research Center, Department of Dermatology and Cancer Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Andrea L Hermann
- Cutaneous Biology Research Center, Department of Dermatology and Cancer Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Deena M Walker
- Nash Family Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Susan Regan
- Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | | | - Yi Chun Lai
- Rutgers New Jersey Medical School, Newark, NJ, USA
| | - Nicholas Theodosakis
- Cutaneous Biology Research Center, Department of Dermatology and Cancer Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Phillip D Rivera
- Program in Neuroscience, Harvard Medical School, Boston, MA, USA
- Department of Pediatrics, Lurie Center for Autism, Massachusetts General Hospital for Children, Boston, MA, USA
- Department of Biology, Hope College, Holland, MI, USA
| | - Weihua Ding
- MGH Center for Translational Pain Research, Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Liuyue Yang
- MGH Center for Translational Pain Research, Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Tobias Beyer
- Cutaneous Biology Research Center, Department of Dermatology and Cancer Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Yong-Hwee E Loh
- Nash Family Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- USC Libraries Bioinformatics Services, University of Southern California, Los Angeles, CA, USA
| | - Jennifer A Lo
- Cutaneous Biology Research Center, Department of Dermatology and Cancer Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Anita A J van der Sande
- Cutaneous Biology Research Center, Department of Dermatology and Cancer Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - William Sarnie
- Cutaneous Biology Research Center, Department of Dermatology and Cancer Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - David Kotler
- Cutaneous Biology Research Center, Department of Dermatology and Cancer Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Jennifer J Hsiao
- Cutaneous Biology Research Center, Department of Dermatology and Cancer Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Mack Y Su
- Cutaneous Biology Research Center, Department of Dermatology and Cancer Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Shinichiro Kato
- Cutaneous Biology Research Center, Department of Dermatology and Cancer Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Joseph Kotler
- Cutaneous Biology Research Center, Department of Dermatology and Cancer Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Staci D Bilbo
- Program in Neuroscience, Harvard Medical School, Boston, MA, USA
- Department of Pediatrics, Lurie Center for Autism, Massachusetts General Hospital for Children, Boston, MA, USA
| | - Vanita Chopra
- Department of Neurology, Harvard Medical School, Massachusetts General Hospital, Charlestown, MA, USA
| | - Matthew P Salomon
- Department of Translational Molecular Medicine, Division of Molecular Oncology, John Wayne Cancer Institute at Providence Saint John's Health Center, Santa Monica, CA, USA
| | - Shiqian Shen
- MGH Center for Translational Pain Research, Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Dave S B Hoon
- Department of Translational Molecular Medicine, Division of Molecular Oncology, John Wayne Cancer Institute at Providence Saint John's Health Center, Santa Monica, CA, USA
| | - Maryam M Asgari
- Department of Dermatology, Massachusetts General Hospital and Department of Population Medicine, Harvard Medical School, Boston, MA, USA
| | - Sarah E Wakeman
- Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Eric J Nestler
- Nash Family Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - David E Fisher
- Cutaneous Biology Research Center, Department of Dermatology and Cancer Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.
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15
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Jiang W, Wu H, Yu X, Wang Y, Gu W, Wei W, Li B, Jiang X, Wang Y, Hou W, Dong Q, Yan X, Li Y, Sun C, Han T. Third-hand smoke exposure is associated with abnormal serum melatonin level via hypomethylation of CYP1A2 promoter: Evidence from human and animal studies. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 277:116669. [PMID: 33652180 DOI: 10.1016/j.envpol.2021.116669] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 01/08/2021] [Accepted: 02/01/2021] [Indexed: 06/12/2023]
Abstract
This study aimed to examine whether and how third-hand smoke (THS) exposure would influence serum melatonin level. 1083 participants with or without exposure to THS were enrolled. Serum ROS, SOD, GSH-Px, and melatonin were measured by ELISA. Methylation microarrays detection and WGCNA were performed to identify hub methylated-sites. The methylation levels of hub-sites were validated in addtional samples. Moreover, mice were exposed to THS for 6 months mimicking exposure of human and the serum, liver, and pineal were collected. Oxidative stress-related indicators in serum, pineal, and liver were measured by ELISA. The expressions of mRNA and protein and methylation levels of hub-gene discovered in human data were further explored by RT-PCR, western-blot, and TBS. The results showed the participants exposed to THS had lower melatonin-level. 820 differentially methylated sites associated with THS were identified. And the hub-site located on the CYP1A2 promoter was identified, which mediated the association between THS and decreased melatonin-level. Decreased peak of serum melatonin, increased ROS and reduced SOD and GSH-Px in pineal and liver, and elevated CYP1A2 expression in liver was also found in the THS-exposed mice. Hypo-methylation of 7 CPG sites on the CYP1A2 promoter was identified, which accelerated the catabolism of melatonin. Overall, THS exposure is associated with abnormal melatonin catabolism through hypo-methylation of CYP1A2-promoter.
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Affiliation(s)
- Wenbo Jiang
- Department of Nutrition and Food Hygiene, School of Public Health, Harbin Medical University, Harbin, Heilongjiang Province 150081, P. R. China
| | - Huanyu Wu
- Department of Nutrition and Food Hygiene, School of Public Health, Harbin Medical University, Harbin, Heilongjiang Province 150081, P. R. China
| | - Xinyang Yu
- Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yu Wang
- Department of Nutrition and Food Hygiene, School of Public Health, Harbin Medical University, Harbin, Heilongjiang Province 150081, P. R. China
| | - Wenbo Gu
- Department of Nutrition and Food Hygiene, School of Public Health, Harbin Medical University, Harbin, Heilongjiang Province 150081, P. R. China
| | - Wei Wei
- Department of Nutrition and Food Hygiene, School of Public Health, Harbin Medical University, Harbin, Heilongjiang Province 150081, P. R. China
| | - Bai Li
- University of Ottawa, Ottawa K1N 6N5, Canada
| | - XiTao Jiang
- IT and Environment, College of Engineering, Charles Darwin University, Darwin, Northern Territory 0810, Australia
| | - Yue Wang
- Department of Nutrition and Food Hygiene, School of Public Health, Harbin Medical University, Harbin, Heilongjiang Province 150081, P. R. China
| | - Wanying Hou
- Department of Nutrition and Food Hygiene, School of Public Health, Harbin Medical University, Harbin, Heilongjiang Province 150081, P. R. China
| | - Qiuying Dong
- Department of Nutrition and Food Hygiene, School of Public Health, Harbin Medical University, Harbin, Heilongjiang Province 150081, P. R. China
| | - Xuemin Yan
- Department of Nutrition and Food Hygiene, School of Public Health, Harbin Medical University, Harbin, Heilongjiang Province 150081, P. R. China
| | - Ying Li
- Department of Nutrition and Food Hygiene, School of Public Health, Harbin Medical University, Harbin, Heilongjiang Province 150081, P. R. China
| | - Changhao Sun
- Department of Nutrition and Food Hygiene, School of Public Health, Harbin Medical University, Harbin, Heilongjiang Province 150081, P. R. China
| | - Tianshu Han
- Department of Nutrition and Food Hygiene, School of Public Health, Harbin Medical University, Harbin, Heilongjiang Province 150081, P. R. China.
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16
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Predictors of severe postoperative pain after orthopedic surgery in the immediate postoperative period. Int J Orthop Trauma Nurs 2021; 43:100864. [PMID: 34352663 DOI: 10.1016/j.ijotn.2021.100864] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 02/23/2021] [Accepted: 04/22/2021] [Indexed: 11/20/2022]
Abstract
AIM Severe pain in the immediate postoperative period can negatively affect patients' quality of recovery, prolong hospital stay, and increase the risk of developing persistent pain. This study aimed to examine the predictors of severe postoperative pain in the immediate postoperative period among orthopedic trauma patients. METHODS A prospective observational study design was used. Data were collected from 153 patients that underwent orthopedic surgery procedures. Pain scores were assessed by a numeric pain scale at 45 min in the Post Anesthesia Care Unit. Physical health status was measured by the American Society of Anesthesiologists Status Classification System, and total dose of opioids (converted to morphine equivalents) and other demographic and clinical characteristics were recorded from medical records. RESULTS Preoperative smoking and physical health status were statistically significant predictors of severe postoperative pain in the immediate postoperative period. The odds of severe postoperative pain for smokers were 2.42 times the odds of nonsmokers. Patients with severe systemic disease showed 4.27 times lower odds of severe pain than more healthy patients. CONCLUSION Preoperative predictors of severe postoperative pain should be considered when assessing and treating orthopedic patients postoperatively to assure adequate pain relief.
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17
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Qin N, Li Y, Wang C, Zhu M, Dai J, Hong T, Albanes D, Lam S, Tardon A, Chen C, Goodman G, Bojesen SE, Landi MT, Johansson M, Risch A, Wichmann HE, Bickeboller H, Rennert G, Arnold S, Brennan P, Field JK, Shete S, Le Marchand L, Melander O, Brunnstrom H, Liu G, Hung RJ, Andrew A, Kiemeney LA, Zienolddiny S, Grankvist K, Johansson M, Caporaso N, Woll P, Lazarus P, Schabath MB, Aldrich MC, Stevens VL, Jin G, Christiani DC, Hu Z, Amos CI, Ma H, Shen H. Comprehensive functional annotation of susceptibility variants identifies genetic heterogeneity between lung adenocarcinoma and squamous cell carcinoma. Front Med 2021; 15:275-291. [PMID: 32889700 PMCID: PMC8374896 DOI: 10.1007/s11684-020-0779-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2019] [Accepted: 03/05/2020] [Indexed: 12/12/2022]
Abstract
Although genome-wide association studies have identified more than eighty genetic variants associated with non-small cell lung cancer (NSCLC) risk, biological mechanisms of these variants remain largely unknown. By integrating a large-scale genotype data of 15 581 lung adenocarcinoma (AD) cases, 8350 squamous cell carcinoma (SqCC) cases, and 27 355 controls, as well as multiple transcriptome and epigenomic databases, we conducted histology-specific meta-analyses and functional annotations of both reported and novel susceptibility variants. We identified 3064 credible risk variants for NSCLC, which were overrepresented in enhancer-like and promoter-like histone modification peaks as well as DNase I hypersensitive sites. Transcription factor enrichment analysis revealed that USF1 was AD-specific while CREB1 was SqCC-specific. Functional annotation and gene-based analysis implicated 894 target genes, including 274 specifics for AD and 123 for SqCC, which were overrepresented in somatic driver genes (ER = 1.95, P = 0.005). Pathway enrichment analysis and Gene-Set Enrichment Analysis revealed that AD genes were primarily involved in immune-related pathways, while SqCC genes were homologous recombination deficiency related. Our results illustrate the molecular basis of both well-studied and new susceptibility loci of NSCLC, providing not only novel insights into the genetic heterogeneity between AD and SqCC but also a set of plausible gene targets for post-GWAS functional experiments.
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Affiliation(s)
- Na Qin
- Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
| | - Yuancheng Li
- Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
| | - Cheng Wang
- Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
- State Key Laboratory of Reproductive Medicine, Center for Global Health, Nanjing Medical University, Nanjing, 211166, China
- Department of Bioinformatics, School of Biomedical Engineering and Informatics, Nanjing Medical University, Nanjing, 211166, China
| | - Meng Zhu
- Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
- Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Cancer Medicine, Nanjing Medical University, Nanjing, 211166, China
| | - Juncheng Dai
- Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
- State Key Laboratory of Reproductive Medicine, Center for Global Health, Nanjing Medical University, Nanjing, 211166, China
- Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Cancer Medicine, Nanjing Medical University, Nanjing, 211166, China
- China International Cooperation Center for Environment and Human Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
| | - Tongtong Hong
- Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
| | - Demetrius Albanes
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD, 20892-9304, USA
| | - Stephen Lam
- Department of Integrative Oncology, British Columbia Cancer Agency, Vancouver, BC, V5Z 1L3, Canada
| | - Adonina Tardon
- Faculty of Medicine, University of Oviedo and CIBERESP, Oviedo, 33006, Spain
| | - Chu Chen
- Program in Epidemiology, Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, WA, 98109-1024, USA
| | - Gary Goodman
- Public Health Sciences Division, Swedish Cancer Institute, Seattle, WA, 98026, USA
| | - Stig E Bojesen
- Department of Clinical Biochemistry, Copenhagen University Hospital, Copenhagen, DK-1017, Denmark
| | | | - Mattias Johansson
- Genetic Epidemiology Group, International Agency for Research on Cancer, Lyon, 69372, France
| | - Angela Risch
- Cancer Center Cluster Salzburg at PLUS, Department of Molecular Biology, University of Salzburg, Heidelberg, 5020, Austria
| | - H-Erich Wichmann
- Institute of Medical Informatics, Biometry and Epidemiology, Chair of Epidemiology, Ludwig Maximilians University, Munich, Bavaria, 80539, Germany
| | - Heike Bickeboller
- Department of Genetic Epidemiology, University Medical Center Goettingen, Goettingen, 37075, Germany
| | - Gadi Rennert
- Technion Faculty of Medicine, Carmel Medical Center, Haifa, 3448516, Israel
| | - Susanne Arnold
- Markey Cancer Center, University of Kentucky, Lexington, KY, 40506-0054, USA
| | - Paul Brennan
- Genetic Epidemiology Group, International Agency for Research on Cancer, Lyon, 69372, France
| | - John K Field
- Department of Molecular and Clinical Cancer Medicine, Roy Castle Lung Cancer Research Programme, The University of Liverpool Institute of Translational Medicine, Liverpool, L69 7ZX, UK
| | - Sanjay Shete
- Department of Epidemiology, The University of Texas, MD Anderson Cancer Center, Houston, TX, 77079, USA
| | - Loic Le Marchand
- Department of Epidemiology, University of Hawaii Cancer Center, Honolulu, HI, 96813, USA
| | - Olle Melander
- Department of Clinical Sciences, Lund University, BMC F12, 221 84, Lund, Sweden
| | - Hans Brunnstrom
- Department of Clinical Sciences, Lund University, BMC F12, 221 84, Lund, Sweden
| | - Geoffrey Liu
- Epidemiology Division, Princess Margaret Cancer Center, Toronto, ON, M4Y 2H8, Canada
| | - Rayjean J Hung
- Epidemiology Division, Lunenfeld-Tanenbuaum Research Institute, Sinai Health System, Toronto, ON M5G 1X5, Canada
| | - Angeline Andrew
- Department of Neurology, Dartmouth-Hitchcock Medical Center, Lebanon, NH, 03756, USA
| | - Lambertus A Kiemeney
- Department of Health Evidence, Radboud University Medical Center, Nijmegen, 9101 6500, HB, Germany
| | - Shan Zienolddiny
- National Institute of Occupational Health (STAMI), Oslo, Pb 5330, Norway
| | - Kjell Grankvist
- Department of Medical Biosciences, Umeå University, Umea, 901 87, Sweden
| | - Mikael Johansson
- Department of Radiation Sciences, Umeå University, Umea, 901 87, Sweden
| | - Neil Caporaso
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, MD, 20850, USA
| | - Penella Woll
- Academic Unit of Clinical Oncology, University of Sheffield, Sheffield, S10 2TN, UK
| | - Philip Lazarus
- College of Pharmacy, Washington State University, Spokane, WA, 99210, USA
| | - Matthew B Schabath
- Department of Cancer Epidemiology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, 12902, USA
| | - Melinda C Aldrich
- Department of Thoracic Surgery, Division of Epidemiology, Vanderbilt University Medical Center, Nashville, TN, 37232, USA
| | - Victoria L Stevens
- Department of Epidemiology Research Program, American Cancer Society, Atlanta, GA, 30303, USA
| | - Guangfu Jin
- Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
- State Key Laboratory of Reproductive Medicine, Center for Global Health, Nanjing Medical University, Nanjing, 211166, China
- Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Cancer Medicine, Nanjing Medical University, Nanjing, 211166, China
- China International Cooperation Center for Environment and Human Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
| | - David C Christiani
- China International Cooperation Center for Environment and Human Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
- Department of Environmental Health, Harvard School of Public Health, Department of Medicine, Harvard Medical School/Massachusetts General Hospital, Boston, MA, 02115, USA
| | - Zhibin Hu
- Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
- State Key Laboratory of Reproductive Medicine, Center for Global Health, Nanjing Medical University, Nanjing, 211166, China
- China International Cooperation Center for Environment and Human Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
| | - Christopher I Amos
- Baylor College of Medicine, Institute for Clinical and Translational Research, Houston, TX, 21202, USA
| | - Hongxia Ma
- Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, China.
- State Key Laboratory of Reproductive Medicine, Center for Global Health, Nanjing Medical University, Nanjing, 211166, China.
- Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Cancer Medicine, Nanjing Medical University, Nanjing, 211166, China.
- China International Cooperation Center for Environment and Human Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, China.
| | - Hongbing Shen
- Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, China.
- State Key Laboratory of Reproductive Medicine, Center for Global Health, Nanjing Medical University, Nanjing, 211166, China.
- Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Cancer Medicine, Nanjing Medical University, Nanjing, 211166, China.
- China International Cooperation Center for Environment and Human Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, China.
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18
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Association Study of Opioid Receptor Delta-Type 1 (OPRD1) Gene Variants with Nicotine Dependence in an Iranian Population. J Mol Neurosci 2021; 71:1301-1305. [PMID: 33506435 DOI: 10.1007/s12031-020-01757-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2020] [Accepted: 11/16/2020] [Indexed: 10/22/2022]
Abstract
Twins studies indicate that many individual factors are associated with genetic polymorphisms in tobacco use, dependence vulnerability, and the ability to quit smoking. Opioid receptor delta-type 1 (OPRD1) is one of the most important genes in the opioid pathway. Therefore, the current study aimed to investigate the association of variants located in the intron 1 of the OPRD1 gene, including rs2236857, rs2236855, and rs760589, with susceptibility to nicotine dependence among northern Iranians. DNA of 426 individuals, including 224 smokers and 202 healthy people, were extracted with the salting-out standard technique, qualified with Agarose gel, then quantified with Nanodrop, and finally genotyped by Amplification Refractory Mutation System (ARMS) PCR. All statistical analyses were performed by SNPAlyze version 8.1 and SPSS version 20. Results revealed no significant association of all three studied variants with the susceptibility to nicotine dependence in any models of inheritance. However, there were five haplotypes with an overall frequency higher than 0.05; no significant impact of any of them on nicotine dependence was observed. Altogether, rs2236857, rs2236855, and rs760589 were not associated with nicotine dependence among northern Iranians.
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Pisera-Fuster A, Zwiller J, Bernabeu R. Methionine Supplementation Abolishes Nicotine-Induced Place Preference in Zebrafish: a Behavioral and Molecular Analysis. Mol Neurobiol 2021; 58:2590-2607. [PMID: 33475949 DOI: 10.1007/s12035-020-02260-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Accepted: 12/10/2020] [Indexed: 12/26/2022]
Abstract
In zebrafish, nicotine is known to regulate sensitivity to psychostimulants via epigenetic mechanisms. Little however is known about the regulation of addictive-like behavior by DNA methylation processes. To evaluate the influence of DNA methylation on nicotine-induced conditioned place preference (CPP), zebrafish were exposed to methyl supplementation through oral L-methionine (Met) administration. Met was found to reduce dramatically nicotine-induced CPP as well as behaviors associated with drug reward. The reduction was associated with the upregulation of DNA methyltransferases (DNMT1 and 3) as well as with the downregulation of methyl-cytosine dioxygenase-1 (TET1) and of nicotinic receptor subunits. Met also increased the expression of histone methyltransferases in nicotine-induced CPP groups. It reversed the nicotine-induced reduction in the methylation at α7 and NMDAR1 gene promoters. Treatment with the DNMT inhibitor 5-aza-2'-deoxycytidine (AZA) was found to reverse the effects of Met in structures of the reward pathway. Interestingly, Met did not modify the amount of the phospho-form of CREB (pCREB), a key factor establishing nicotine conditioning, whereas AZA increased pCREB levels. Our data suggest that nicotine-seeking behavior is partially dependent on DNA methylation occurring probably at specific gene loci, such as α7 and NMDAR1 receptor gene promoters. Overall, they suggest that Met should be considered as a potential therapeutic drug to treat nicotine addiction.
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Affiliation(s)
- Antonella Pisera-Fuster
- Department of Physiology and Institute of Physiology and Biophysics, School of Medicine, University of Buenos Aires, Paraguay 2155 7thfloor (C1121ABG), Ciudad Autónoma de Buenos Aires, Argentina
| | - Jean Zwiller
- Laboratoire de Neurosciences Cognitives et Adaptatives, Université de Strasbourg, Strasbourg, France
| | - Ramon Bernabeu
- Department of Physiology and Institute of Physiology and Biophysics, School of Medicine, University of Buenos Aires, Paraguay 2155 7thfloor (C1121ABG), Ciudad Autónoma de Buenos Aires, Argentina.
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20
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Razavi Y, Karimi S, Karimi-Haghighi S, Hesam S, Haghparast A. Changes in c-fos and p-CREB signaling following exposure to forced swim stress or exogenous corticosterone during morphine-induced place preference are dependent on glucocorticoid receptor in the basolateral amygdala. Can J Physiol Pharmacol 2020; 98:741-752. [PMID: 32574519 DOI: 10.1139/cjpp-2019-0712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Neural circuitry comprising the nucleus accumbens (NAc), prefrontal cortex (PFC), amygdala (AMY), and hippocampus (HIP) are the main components of the reward circuit. Our previous behavioral data showed that forced swim stress (FSS) and corticosterone administration could inhibit the acquisition of morphine-induced conditioned place preference (CPP), and this effect was blocked by intra-basolateral amygdala (BLA) administration of RU38486, glucocorticoid receptor (GR) antagonist. Therefore, we tried to evaluate the effect of intra-BLA administration of the GR antagonist during the conditioning phase on the c-fos and p-CREB/CREB ratio expression in the AMY, NAc, PFC, and HIP of rats that underwent FSS or received exogenous corticosterone (10 mg/kg; i.p.) before morphine injection (5 mg/kg; s.c.) during 3 conditioning days. Our results showed that morphine-induced CPP could increase c-fos level and p-CREB/CREB ratio in all regions (except in the HIP). In addition, c-fos expression was elevated by FSS in all regions and blockade of GR decreased this effect. In the PFC, in addition to FSS, corticosterone could raise c-fos expression, which was blocked by RU38486. In conclusion, it seems that the intra-BLA administration of RU38486 differently modulates the effect of morphine-induced CPP on the expression of c-fos and p-CREB/CREB ratio in animals that underwent FSS or corticosterone administration.
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Affiliation(s)
- Yasaman Razavi
- Neuroscience Research Center, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Sara Karimi
- Neuroscience Research Center, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Saeideh Karimi-Haghighi
- Neuroscience Research Center, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Soghra Hesam
- Department of Neuroscience, Golestan University of Medical Sciences, Gorgan, Iran
| | - Abbas Haghparast
- Neuroscience Research Center, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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21
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Lee AM, Picciotto MR. Effects of nicotine on DARPP-32 and CaMKII signaling relevant to addiction. ADVANCES IN PHARMACOLOGY (SAN DIEGO, CALIF.) 2020; 90:89-115. [PMID: 33706940 PMCID: PMC8008986 DOI: 10.1016/bs.apha.2020.09.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
Abstract
Paul Greengard brought to neuroscience the idea of, and evidence for, the role of second messenger systems in neuronal signaling. The fundamental nature of his contributions is evident in the far reach of his work, relevant to various subfields and topics in neuroscience. In this review, we discuss some of Greengard's work from the perspective of nicotinic acetylcholine receptors and their relevance to nicotine addiction. Specifically, we review the roles of dopamine- and cAMP-regulated phospho-protein of 32kDa (DARPP-32) and Ca2+/calmodulin-dependent kinase II (CaMKII) in nicotine-dependent behaviors. For each protein, we discuss the historical context of their discovery and initial characterization, focusing on the extensive biochemical and immunohistochemical work conducted by Greengard and colleagues. We then briefly summarize contemporary understanding of each protein in key intracellular signaling cascades and evidence for the role of each protein with respect to systems and behaviors relevant to nicotine addiction.
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Affiliation(s)
- Angela M Lee
- Department of Psychiatry, Yale University, New Haven, CT, United States; Yale Interdepartmental Neuroscience Program, New Haven, CT, United States
| | - Marina R Picciotto
- Department of Psychiatry, Yale University, New Haven, CT, United States; Yale Interdepartmental Neuroscience Program, New Haven, CT, United States.
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22
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Parise LF, Sial OK, Warren BL, Sattler CR, Duperrouzel JC, Parise EM, Bolaños-Guzmán CA. Nicotine treatment buffers negative behavioral consequences induced by exposure to physical and emotional stress in adolescent male mice. Psychopharmacology (Berl) 2020; 237:3125-3137. [PMID: 32594187 PMCID: PMC7819755 DOI: 10.1007/s00213-020-05598-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/01/2020] [Accepted: 06/19/2020] [Indexed: 12/17/2022]
Abstract
Early life stress influences adult psychopathology and is associated with an increase in the propensity for drug use/seeking throughout the lifespan. Animal models corroborate that stress exposure exacerbates maladaptive reactivity to stressful stimuli while also shifting the rewarding properties of many drugs of abuse, including nicotine (NIC), a stimulant commonly misused by adolescents. Interestingly, NIC treatment can also normalize some stress-induced behavioral deficits in adult rodents; however, little is known about NIC's therapeutic efficacy following stress experienced during adolescence. The goal of the following experiments was to elucidate NIC's ability to buffer the negative consequences of stress exposure, and to further assess behavioral responsivity while on the drug. Given that stress often occurs in both physical and non-physical forms, we employed the vicarious social defeat stress (VSDS) model which allows for investigation of both physical (PS) and emotional stress (ES) exposure. After 10 days, exposure to PS and ES decreased interaction with a social target in the social interaction test (SIT), confirming social avoidance. Groups were further divided and given NIC (0.0 or 160 mg/L) in their drinking water. After 1 month of NIC consumption, the mice were exposed to the SIT, elevated plus maze (EPM), and the forced swim test (FST), respectively. NIC-treated mice showed a reversal of stress-induced deficits in the EPM and FST. Surprisingly, the mice did not show improvement in the SIT regardless of treatment condition. Together, these data confirm NIC's ability to normalize some stress-induced behavioral deficits; however, NIC's effects on social behavior need further investigation.
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Affiliation(s)
- Lyonna F Parise
- Department of Psychological and Brain Sciences, Texas A&M University, 4325 TAMU, College Station, TX, 77843, USA
- Fishberg Department of Neuroscience, Friedman Brain Institute, Icahn School of Medicine at Mount Sinai. 1 Gustave L. Levy Place, New York, NY, 10029, USA
| | - Omar K Sial
- Department of Psychological and Brain Sciences, Texas A&M University, 4325 TAMU, College Station, TX, 77843, USA
| | - Brandon L Warren
- Department of Pharmacodynamics, Department of Pharmacy, University of Florida, 1345 Center Drive, Gainesville, FL, 32610, USA
| | - Carley R Sattler
- Department of Psychological and Brain Sciences, Texas A&M University, 4325 TAMU, College Station, TX, 77843, USA
| | - Jacqueline C Duperrouzel
- Department of Psychology, Florida International University, 11200 S.W. 8th St., Miami, FL, 33199, USA
| | - Eric M Parise
- Fishberg Department of Neuroscience, Friedman Brain Institute, Icahn School of Medicine at Mount Sinai. 1 Gustave L. Levy Place, New York, NY, 10029, USA
| | - Carlos A Bolaños-Guzmán
- Department of Psychological and Brain Sciences, Texas A&M University, 4325 TAMU, College Station, TX, 77843, USA.
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23
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Huang Z, Wu D, Qu X, Li M, Zou J, Tan S. BDNF and nicotine dependence: associations and potential mechanisms. Rev Neurosci 2020; 32:/j/revneuro.ahead-of-print/revneuro-2020-0044/revneuro-2020-0044.xml. [PMID: 32887210 DOI: 10.1515/revneuro-2020-0044] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Accepted: 07/18/2020] [Indexed: 12/30/2022]
Abstract
Smoking is the leading preventable cause of death worldwide and tobacco addiction has become a serious public health problem. Nicotine is the main addictive component of tobacco, and the majority of people that smoke regularly develop nicotine dependence. Nicotine addiction is deemed to be a chronic mental disorder. Although it is well known that nicotine binds to the nicotinic acetylcholine receptors (nAChRs) and activates the mesolimbic dopaminergic system (MDS) to generate the pleasant and rewarding effects, the molecular mechanisms of nicotine addiction are not fully understood. Brain-derived neurotrophic factor (BDNF) is the most prevalent growth factor in the brain, which regulates neuron survival, differentiation, and synaptic plasticity, mainly through binding to the high affinity receptor tyrosine kinase receptor B (TrkB). BDNF gene polymorphisms are associated with nicotine dependence and blood BDNF levels are altered in smokers. In this review, we discussed the effects of nicotine on BDNF expression in the brain and summarized the underlying signaling pathways, which further indicated BDNF as a key regulator in nicotine dependence. Further studies that aim to understand the neurobiological mechanism of BDNF in nicotine addcition would provide a valuable reference for quitting smoking and developing the treatment of other addictive substances.
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Affiliation(s)
- Zeyi Huang
- Department of Histology and Embryology, Institute of Clinical Anatomy & Reproductive Medicine, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Hengyang Medical College, University of South China, 28 W. Changsheng Road, Hengyang421001,Hunan, China
| | - Daichao Wu
- Department of Histology and Embryology, Institute of Clinical Anatomy & Reproductive Medicine, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Hengyang Medical College, University of South China, 28 W. Changsheng Road, Hengyang421001,Hunan, China
| | - Xilin Qu
- Grade 2017 of Clinical Medicine, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Hengyang Medical College, University of South China, Hengyang421001,Hunan, China
| | - Meixiang Li
- Department of Histology and Embryology, Institute of Clinical Anatomy & Reproductive Medicine, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Hengyang Medical College, University of South China, 28 W. Changsheng Road, Hengyang421001,Hunan, China
| | - Ju Zou
- Department of Parasitology, Hunan Provincial Key Laboratory for Special Pathogens Prevention and Control, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Hengyang Medical College, University of South China, Hengyang421001,Hunan, China
| | - Sijie Tan
- Department of Histology and Embryology, Institute of Clinical Anatomy & Reproductive Medicine, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Hengyang Medical College, University of South China, 28 W. Changsheng Road, Hengyang421001,Hunan, China
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24
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Ashabi G, Matloob M, Monfared Neirizi N, Behrouzi M, Safarzadeh M, Rajabpoor Dehdashti A, Sadat-Shirazi MS, Zarrindast MR. Activation of D1-like dopamine receptors is involved in the impairment of spatial memory in the offspring of morphine-abstinent rats. Neurosci Res 2020; 158:37-46. [DOI: 10.1016/j.neures.2019.10.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 09/16/2019] [Accepted: 10/01/2019] [Indexed: 10/25/2022]
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25
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Ghasemzadeh Z, Sardari M, Javadi P, Rezayof A. Expression analysis of hippocampal and amygdala CREB-BDNF signaling pathway in nicotine-induced reward under stress in rats. Brain Res 2020; 1741:146885. [PMID: 32417176 DOI: 10.1016/j.brainres.2020.146885] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 05/10/2020] [Accepted: 05/11/2020] [Indexed: 12/22/2022]
Abstract
Extensive research has shown that individuals are more sensitive to develop addiction and drug taking under stress state. The present study includes an expression analysis to identify the possible role of hippocampal and amygdala CREB (cAMP response element-binding protein) and BDNF (Brain-derived neurotrophic factor) activation in nicotine-induced conditioned place preference (CPP) under exposure to acute or sub-chronic stress. Using western-blot technique, CREB phosphorylation was shown to increase in the hippocampus and the amygdala following nicotine-induced CPP. The hippocampal level of BDNF was increased following nicotine administration and in the nicotine-treated animals exposed to acute stress. In animals exposed to acute stress, the amygdala ratios of the pCREB/CREB decreased, while pre-treatment of the animals with nicotine (0.1 mg/kg) decreased this ratio only in the hippocampus. Sub-chronic stress decreased the pCREB/CREB ratios in the hippocampus and the amygdala. Interestingly, sub-chronic stress-induced increase of nicotine reward only decreased the hippocampal pCREB/CREB ratio. The levels of BDNF in the hippocampus and the amygdala decreased under acute stress. Acute stress-induced increase of nicotine reward increased BDNF levels in the hippocampus. Moreover, the animals' exposure to the CPP apparatus without any drug administration increased the ratios of pCREB/tCREB and BDNF/β-actin in the targeted sites. In summary, the present study indicate that the alterations of the ratio of pCREB/CREB and also the level of BDNF in the hippocampus may be critical for enhancing nicotine reward under stress condition. The evidence from this study suggests the distinct roles of the hippocampus and the amygdala in mediating nicotine reward under stress.
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Affiliation(s)
- Zahra Ghasemzadeh
- Department of Animal Biology, School of Biology, College of Science, University of Tehran, Tehran, Iran
| | - Maryam Sardari
- Department of Animal Biology, School of Biology, College of Science, University of Tehran, Tehran, Iran
| | - Parastoo Javadi
- Department of Animal Biology, School of Biology, College of Science, University of Tehran, Tehran, Iran
| | - Ameneh Rezayof
- Department of Animal Biology, School of Biology, College of Science, University of Tehran, Tehran, Iran.
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26
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Domi E, Xu L, Pätz M, Nordeman A, Augier G, Holm L, Toivainen S, Augier E, Hansson AC, Heilig M. Nicotine increases alcohol self-administration in male rats via a μ-opioid mechanism within the mesolimbic pathway. Br J Pharmacol 2020; 177:4516-4531. [PMID: 32697329 PMCID: PMC7484560 DOI: 10.1111/bph.15210] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2019] [Revised: 06/25/2020] [Accepted: 06/30/2020] [Indexed: 01/10/2023] Open
Abstract
Background and Purpose Alcohol and nicotine use disorders are commonly comorbid. Both alcohol and nicotine can activate opioid systems in reward‐related brain regions, leading to adaptive changes in opioid signalling upon chronic exposure. The potential role of these adaptations for comorbidity is presently unknown. Here, we examined the contribution of μ and κ‐opioid receptors to nicotine‐induced escalation of alcohol self‐administration in rats. Experimental Approach Chronic nicotine was tested on alcohol self‐administration and motivation to obtain alcohol. We then tested the effect of the κ antagonist CERC‐501 and the preferential μ receptor antagonist naltrexone on basal and nicotine‐escalated alcohol self‐administration. To probe μ or κ receptor adaptations, receptor binding and G‐protein coupling assays were performed in reward‐related brain regions. Finally, dopaminergic activity in response to alcohol was examined, using phosphorylation of DARPP‐32 in nucleus accumbens as a biomarker. Key Results Nicotine robustly induced escalation of alcohol self‐administration and motivation to obtain alcohol. This was blocked by naltrexone but not by CERC‐501. Escalation of alcohol self‐administration was associated with decreased DAMGO‐stimulated μ receptor signalling in the ventral tegmental area (VTA) and decreased pDARPP‐32 in the nucleus accumbens shell in response to alcohol. Conclusions and Implications Collectively, these results suggest that nicotine contributes to escalate alcohol self‐administration through a dysregulation of μ receptor activity in the VTA. These data imply that targeting μ rather than κ receptors may be the preferred pharmacotherapeutic approach for the treatment of alcohol use disorder when nicotine use contributes to alcohol consumption.
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Affiliation(s)
- Esi Domi
- Center for Social and Affective Neuroscience, BKV, Linköping University, Linköping, S-581 85, Sweden
| | - Li Xu
- Center for Social and Affective Neuroscience, BKV, Linköping University, Linköping, S-581 85, Sweden.,Psychosomatic Medicine Center, Sichuan Academy of Medical Sciences, Sichuan Provincial People's Hospital, Chengdu, China
| | - Marvin Pätz
- Institute of Psychopharmacology, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Anton Nordeman
- Center for Social and Affective Neuroscience, BKV, Linköping University, Linköping, S-581 85, Sweden
| | - Gaëlle Augier
- Center for Social and Affective Neuroscience, BKV, Linköping University, Linköping, S-581 85, Sweden
| | - Lovisa Holm
- Center for Social and Affective Neuroscience, BKV, Linköping University, Linköping, S-581 85, Sweden
| | - Sanne Toivainen
- Center for Social and Affective Neuroscience, BKV, Linköping University, Linköping, S-581 85, Sweden
| | - Eric Augier
- Center for Social and Affective Neuroscience, BKV, Linköping University, Linköping, S-581 85, Sweden
| | - Anita C Hansson
- Institute of Psychopharmacology, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Markus Heilig
- Center for Social and Affective Neuroscience, BKV, Linköping University, Linköping, S-581 85, Sweden
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Cocaine Self-administration Regulates Transcription of Opioid Peptide Precursors and Opioid Receptors in Rat Caudate Putamen and Prefrontal Cortex. Neuroscience 2020; 443:131-139. [PMID: 32730947 DOI: 10.1016/j.neuroscience.2020.07.035] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 07/18/2020] [Accepted: 07/20/2020] [Indexed: 11/23/2022]
Abstract
The brain opioid system plays an important role in cocaine reward. Altered signaling in the opioid system by chronic cocaine exposure contributes to cocaine-seeking and taking behavior. The current study investigated concurrent changes in the gene expression of multiple components in rat brain opioid system following cocaine self-administration. Animals were limited to 40 infusions (1.5 mg/kg/infusion) within 6 h per day for five consecutive days. We then examined the mRNA levels of opioid receptors including mu (Oprm), delta (Oprd), and kappa (Oprk), and their endogenous opioid peptide precursors including proopiomelanocortin (Pomc), proenkephalin (Penk), prodynorphin (Pdyn) in the dorsal striatum (CPu) and the prefrontal cortex (PFC) 18 h after the last cocaine infusion. We found that cocaine self-administration significantly increased the mRNA levels of Oprm and Oprd in both the CPu and PFC, but had no effect on Oprk mRNA levels in either brain region. Moreover, cocaine had a greater influence on the mRNA levels of opioid peptide precursors in rat CPu than in the PFC. In the CPu, cocaine self-administration significantly increased the mRNA levels of Penk and Pdyn and abolished the mRNA levels of Pomc. In the PFC, cocaine self-administration only increased Pdyn mRNA levels without changing the mRNA levels of Pomc and Penk. These data suggest that cocaine self-administration influences the expression of multiple genes in the brain opioid system, and the concurrent changes in these targets may underlie cocaine-induced reward and habitual drug-seeking behavior.
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Wang KS, Zegel M, Molokotos E, Moran LV, Olson DP, Pizzagalli DA, Janes AC. The acute effects of nicotine on corticostriatal responses to distinct phases of reward processing. Neuropsychopharmacology 2020; 45:1207-1214. [PMID: 31931509 PMCID: PMC7235267 DOI: 10.1038/s41386-020-0611-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 01/06/2020] [Accepted: 01/07/2020] [Indexed: 11/09/2022]
Abstract
Nicotine enhances the reinforcement of non-drug rewards by increasing nucleus accumbens (NAcc) reactivity to anticipatory cues. This anticipatory effect is selective as no clear evidence has emerged showing that nicotine acutely changes reward receipt reactivity. However, repeated rewarding experiences shift peak brain reactivity from hedonic reward outcome to the motivational anticipatory cue yielding more habitual cue-induced behavior. Given nicotine's influence on NAcc reactivity and connectivity, it is plausible that nicotine acutely induces this shift and alters NAcc functional connectivity during reward processing. To evaluate this currently untested hypothesis, a randomized crossover design was used in which healthy non-smokers were administered placebo and nicotine (2-mg lozenge). Brain activation to monetary reward anticipation and outcome was evaluated with functional magnetic resonance imaging. Relative to placebo, nicotine induced more NAcc reactivity to reward anticipation. Greater NAcc activation during anticipation was significantly associated with lower NAcc activation to outcome. During outcome, nicotine reduced NAcc functional connectivity with cortical regions including the anterior cingulate cortex, orbitofrontal cortex, and insula. These regions showed the same negative relationship between reward anticipation and outcome as noted in the NAcc. The current findings significantly improve our understanding of how nicotine changes corticostriatal circuit function and communication during distinct phases of reward processing and critically show that these alterations happen acutely following a single dose. The implications of this work explain nicotinic modulation of general reward function, which offer insights into the initial drive to smoke and the subsequent difficulty in cessation.
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Affiliation(s)
- Kainan S. Wang
- 0000 0000 8795 072Xgrid.240206.2McLean Imaging Center, McLean Hospital, Belmont, MA USA ,000000041936754Xgrid.38142.3cHarvard Medical School, Boston, MA USA
| | - Maya Zegel
- 0000 0000 8795 072Xgrid.240206.2McLean Imaging Center, McLean Hospital, Belmont, MA USA
| | - Elena Molokotos
- 0000 0000 8795 072Xgrid.240206.2McLean Imaging Center, McLean Hospital, Belmont, MA USA ,0000 0001 0684 8852grid.264352.4Department of Psychology, Suffolk University, Boston, MA USA
| | - Lauren V. Moran
- 0000 0000 8795 072Xgrid.240206.2McLean Imaging Center, McLean Hospital, Belmont, MA USA ,000000041936754Xgrid.38142.3cHarvard Medical School, Boston, MA USA
| | - David P. Olson
- 0000 0000 8795 072Xgrid.240206.2McLean Imaging Center, McLean Hospital, Belmont, MA USA ,000000041936754Xgrid.38142.3cHarvard Medical School, Boston, MA USA
| | - Diego A. Pizzagalli
- 0000 0000 8795 072Xgrid.240206.2McLean Imaging Center, McLean Hospital, Belmont, MA USA ,000000041936754Xgrid.38142.3cHarvard Medical School, Boston, MA USA
| | - Amy C. Janes
- 0000 0000 8795 072Xgrid.240206.2McLean Imaging Center, McLean Hospital, Belmont, MA USA ,000000041936754Xgrid.38142.3cHarvard Medical School, Boston, MA USA
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29
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Kantonen T, Karjalainen T, Isojärvi J, Nuutila P, Tuisku J, Rinne J, Hietala J, Kaasinen V, Kalliokoski K, Scheinin H, Hirvonen J, Vehtari A, Nummenmaa L. Interindividual variability and lateralization of μ-opioid receptors in the human brain. Neuroimage 2020; 217:116922. [PMID: 32407992 DOI: 10.1016/j.neuroimage.2020.116922] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 04/29/2020] [Accepted: 05/01/2020] [Indexed: 12/19/2022] Open
Abstract
Alterations in the brain's μ-opioid receptor (MOR) system have been associated with several neuropsychiatric disorders. Central MOR availability also varies considerably in healthy individuals. Multiple epidemiological factors have been proposed to influence the MOR system, but due to small sample sizes the magnitude of their influence remains inconclusive. We compiled [11C]carfentanil positron emission tomography scans from 204 individuals with no neurologic or psychiatric disorders, and estimated the effects of sex, age, body mass index (BMI) and smoking on [11C]carfentanil binding potential using between-subject regression analysis. We also examined hemispheric differences in MOR availability. Older age was associated with increase in MOR availability in frontotemporal areas but decrease in amygdala, thalamus, and nucleus accumbens. The age-dependent increase was stronger in males. MOR availability was globally lowered in smokers but independent of BMI. Finally, MOR availability was higher in the right versus the left hemisphere. The presently observed variation in MOR availability may explain why some individuals are prone to develop MOR-linked pathological states, such as chronic pain or psychiatric disorders. Lateralized MOR system may reflect hemispheric work specialization in central emotion and pain processes.
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Affiliation(s)
- Tatu Kantonen
- Turku PET Centre, University of Turku, Finland; Clinical Neurosciences, University of Turku and Turku University Hospital, Finland.
| | - Tomi Karjalainen
- Turku PET Centre, University of Turku, Finland; Turku PET Centre, Turku University Hospital, Finland
| | | | - Pirjo Nuutila
- Turku PET Centre, University of Turku, Finland; Department of Endocrinology, Turku University Hospital, Finland
| | | | - Juha Rinne
- Turku PET Centre, University of Turku, Finland; Clinical Neurosciences, University of Turku and Turku University Hospital, Finland
| | - Jarmo Hietala
- Turku PET Centre, University of Turku, Finland; Department of Psychiatry, University of Turku and Turku University Hospital, Finland
| | - Valtteri Kaasinen
- Turku PET Centre, University of Turku, Finland; Clinical Neurosciences, University of Turku and Turku University Hospital, Finland
| | | | | | | | - Aki Vehtari
- Helsinki Institute for Information Technology HIIT, Department of Computer Science, Aalto University, Finland
| | - Lauri Nummenmaa
- Turku PET Centre, University of Turku, Finland; Department of Psychology, University of Turku, Finland
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Fandino LB, Bhashyam A, Harris MB, Zhang D. Factors associated with discharge opioid prescription after hip fracture fixation. Musculoskeletal Care 2020; 18:352-358. [PMID: 32202702 DOI: 10.1002/msc.1466] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 03/14/2020] [Accepted: 03/15/2020] [Indexed: 12/19/2022]
Abstract
OBJECTIVE Opioid prescribing after hip fracture fixation is variable, but the factors that drive this prescribing variation are not well-described. The purpose of this study was to determine independent factors associated with increased opioid prescription upon discharge after hip fracture fixation. METHODS A retrospective cohort study of 296 adult patients who underwent hip fracture fixation between January 2016 and December 2017 at two Level I trauma centers were included in our study. The primary outcome measurement was opioid prescription at discharge in morphine milligram equivalents (MME). Bivariate analysis was used to screen for factors, and multivariable regression analysis was used to identify independent factors associated with opioid prescription upon discharge from the hospital. RESULTS Discharge opioid prescription amounts were available for 280 out of 296 patients (95%). The mean (±standard deviation) discharge opioid prescription was 212 (±319) MME. Multivariable regression analysis showed that younger age (p = 0.004), diabetes mellitus (p = 0.02), smoking (p < 0.001), treatment at hospital #2 (p < 0.001), and weekend discharge (p = 0.03) were associated with increased opioid prescription at discharge. CONCLUSIONS Increased opioid prescribing after hip fracture fixation is associated with patient- and system-related factors. Prescriber education programs, prescription guidelines, and safe handoff practices that focus on these factors may help to decrease prescription variability and opioid overprescription across institutions.
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Affiliation(s)
| | - Abhiram Bhashyam
- Harvard Medical School, Boston, Massachusetts, USA.,Department of Orthopaedic Surgery, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Mitchel B Harris
- Harvard Medical School, Boston, Massachusetts, USA.,Department of Orthopaedic Surgery, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Dafang Zhang
- Harvard Medical School, Boston, Massachusetts, USA.,Department of Orthopaedic Surgery, Brigham and Women's Hospital, Boston, Massachusetts, USA
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Duan S, Ma Y, Xie L, Zheng L, Huang J, Guo R, Sun Z, Xie Y, Lv J, Lin Z, Ma S. Effects of Chronic Ephedrine Toxicity on Functional Connections, Cell Apoptosis, and CREB-Related Proteins in the Prefrontal Cortex of Rhesus Monkeys. Neurotox Res 2020; 37:602-615. [PMID: 31858422 DOI: 10.1007/s12640-019-00146-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Revised: 11/20/2019] [Accepted: 11/29/2019] [Indexed: 02/05/2023]
Abstract
Ephedrine abuse has spread in many parts of the world, severely threatening human health. The mechanism of ephedrine toxicity is still unclear. To explore the possible neural mechanisms of ephedrine toxicity, this study established a non-human primate model of ephedrine exposure, analyzed the functional connectivity changes in its prefrontal cortex through resting state BOLD-fMRI, and then inspected the pathophysiological changes as well as the expression of the cyclic adenosine monophosphate response element-binding protein (CREB), phosphorylated CREB (P-CREB), and CREB target proteins (c-fos and fosB) in the prefrontal cortex. After ephedrine toxicity, we found that the prefrontal cortex of monkeys strengthened its functional connectivity with the brain regions that perform motivation, drive, reward, and learning and memory functions and weakened its functional connectivity with the brain regions that perform cognitive control. These results suggest that ephedrine toxicity causes abnormal neural circuits that lead to the amplification and enhancement of drug-related cues and the weakening and damage of cognitive control function. Histology showed that the neurocytotoxicity of ephedrine can cause neuronal degeneration and apoptosis. Real-time PCR and Western blot showed increased expression of CREB mRNA and CREB/P-CREB/c-fos/fosB protein in the prefrontal cortex after ephedrine toxicity. Collectively, the present study indicates that the enhancement of drug-related cues and the weakening of cognitive control caused by abnormal neural circuits after drug exposure may be a major mechanism of brain function changes caused by ephedrine. These histological and molecular changes may be the pathophysiological basis of brain function changes caused by ephedrine.
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Affiliation(s)
- Shouxing Duan
- Department of Pediatric Surgery, The First Affiliated Hospital of Shantou University Medical College, No. 57 Changping Road, Shantou, Guangdong, 515041, People's Republic of China
- Shantou University Medical College, No. 22 Xinling Road, Shantou, Guangdong, 515041, People's Republic of China
- Guangdong Key Laboratory of Medical Molecular Imaging, No. 57 Changping Road, Shantou, Guangdong, 515041, People's Republic of China
| | - Ye Ma
- Department of Linguistics & Languages, Michigan State University, East Lansing, MI, 48824, USA
| | - Lei Xie
- Shantou University Medical College, No. 22 Xinling Road, Shantou, Guangdong, 515041, People's Republic of China
- Guangdong Key Laboratory of Medical Molecular Imaging, No. 57 Changping Road, Shantou, Guangdong, 515041, People's Republic of China
- Department of Radiology, The First Affiliated Hospital of Shantou University Medical College, No. 57 Changping Road, Shantou, Guangdong, 515041, People's Republic of China
| | - Lian Zheng
- Department of Pediatric Surgery, The First Affiliated Hospital of Shantou University Medical College, No. 57 Changping Road, Shantou, Guangdong, 515041, People's Republic of China
| | - Jinzhuang Huang
- Shantou University Medical College, No. 22 Xinling Road, Shantou, Guangdong, 515041, People's Republic of China
- Guangdong Key Laboratory of Medical Molecular Imaging, No. 57 Changping Road, Shantou, Guangdong, 515041, People's Republic of China
- Department of Radiology, The First Affiliated Hospital of Shantou University Medical College, No. 57 Changping Road, Shantou, Guangdong, 515041, People's Republic of China
| | - Ruiwei Guo
- Shantou University Medical College, No. 22 Xinling Road, Shantou, Guangdong, 515041, People's Republic of China
- Guangdong Key Laboratory of Medical Molecular Imaging, No. 57 Changping Road, Shantou, Guangdong, 515041, People's Republic of China
- Department of Radiology, The First Affiliated Hospital of Shantou University Medical College, No. 57 Changping Road, Shantou, Guangdong, 515041, People's Republic of China
| | - Zongbo Sun
- Shantou University Medical College, No. 22 Xinling Road, Shantou, Guangdong, 515041, People's Republic of China
- Guangdong Key Laboratory of Medical Molecular Imaging, No. 57 Changping Road, Shantou, Guangdong, 515041, People's Republic of China
- Department of Radiology, The First Affiliated Hospital of Shantou University Medical College, No. 57 Changping Road, Shantou, Guangdong, 515041, People's Republic of China
| | - Yao Xie
- Shantou University Medical College, No. 22 Xinling Road, Shantou, Guangdong, 515041, People's Republic of China
- Guangdong Key Laboratory of Medical Molecular Imaging, No. 57 Changping Road, Shantou, Guangdong, 515041, People's Republic of China
- Department of Radiology, The First Affiliated Hospital of Shantou University Medical College, No. 57 Changping Road, Shantou, Guangdong, 515041, People's Republic of China
| | - Junyao Lv
- Department of Forensic Medicine, Shantou University Medical College, No. 22 Xinling Road, Shantou, Guangdong, 515041, People's Republic of China
| | - Zhirong Lin
- Shantou University Medical College, No. 22 Xinling Road, Shantou, Guangdong, 515041, People's Republic of China
- Guangdong Key Laboratory of Medical Molecular Imaging, No. 57 Changping Road, Shantou, Guangdong, 515041, People's Republic of China
- Department of Radiology, The First Affiliated Hospital of Shantou University Medical College, No. 57 Changping Road, Shantou, Guangdong, 515041, People's Republic of China
| | - Shuhua Ma
- Shantou University Medical College, No. 22 Xinling Road, Shantou, Guangdong, 515041, People's Republic of China.
- Guangdong Key Laboratory of Medical Molecular Imaging, No. 57 Changping Road, Shantou, Guangdong, 515041, People's Republic of China.
- Department of Radiology, The First Affiliated Hospital of Shantou University Medical College, No. 57 Changping Road, Shantou, Guangdong, 515041, People's Republic of China.
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Association Study of OPRM1 Gene in a Sample of Schizophrenia Patients With Alcohol Dependence or Abuse. CANADIAN JOURNAL OF ADDICTION 2019; 10:30-34. [DOI: 10.1097/cxa.0000000000000069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Ren M, Lotfipour S. Nicotine Gateway Effects on Adolescent Substance Use. West J Emerg Med 2019; 20:696-709. [PMID: 31539325 PMCID: PMC6754186 DOI: 10.5811/westjem.2019.7.41661] [Citation(s) in RCA: 79] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2018] [Revised: 04/15/2019] [Accepted: 07/01/2019] [Indexed: 11/11/2022] Open
Abstract
Given the rise in teenage use of electronic nicotine delivery systems ("vaping") in congruence with the increasing numbers of drug-related emergencies, it is critical to expand the knowledge of the physical and behavioral risks associated with developmental nicotine exposure. A further understanding of the molecular and neurochemical underpinnings of nicotine's gateway effects allows emergency clinicians to advise patients and families and adjust treatment accordingly, which may minimize the use of tobacco, nicotine, and future substances. Currently, the growing use of tobacco products and electronic cigarettes among teenagers represents a major public health concern. Adolescent exposure to tobacco or nicotine can lead to subsequent abuse of nicotine and other substances, which is known as the gateway hypothesis. Adolescence is a developmentally sensitive time period when risk-taking behaviors, such as sensation seeking and drug experimentation, often begin. These hallmark behaviors of adolescence are largely due to maturational changes in the brain. The developing brain is particularly vulnerable to the harmful effects of drugs of abuse, including tobacco and nicotine products, which activate nicotinic acetylcholine receptors (nAChRs). Disruption of nAChR development with early nicotine use may influence the function and pharmacology of the receptor subunits and alter the release of reward-related neurotransmitters, including acetylcholine, dopamine, GABA, serotonin, and glutamate. In this review, we emphasize that the effects of nicotine are highly dependent on timing of exposure, with a dynamic interaction of nAChRs with dopaminergic, endocannabinoid, and opioidergic systems to enhance general drug reward and reinforcement. We analyzed available literature regarding adolescent substance use and nicotine's impact on the developing brain and behavior using the electronic databases of PubMed and Google Scholar for articles published in English between January 1968 and November 2018. We present a large collection of clinical and preclinical evidence that adolescent nicotine exposure influences long-term molecular, biochemical, and functional changes in the brain that encourage subsequent drug abuse.
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Affiliation(s)
- Michelle Ren
- University of California, Irvine, Department of Pharmaceutical Sciences, Irvine, California
| | - Shahrdad Lotfipour
- University of California, Irvine, Department of Emergency Medicine and Pharmaceutical Sciences, Irvine, California
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Huang C, Yang X, Zeng B, Zeng L, Gong X, Zhou C, Xia J, Lian B, Qin Y, Yang L, Liu L, Xie P. Proteomic analysis of olfactory bulb suggests CACNA1E as a promoter of CREB signaling in microbiota-induced depression. J Proteomics 2019; 194:132-147. [DOI: 10.1016/j.jprot.2018.11.023] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 11/24/2018] [Accepted: 11/26/2018] [Indexed: 12/18/2022]
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35
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Fowler CD, Turner JR, Imad Damaj M. Molecular Mechanisms Associated with Nicotine Pharmacology and Dependence. Handb Exp Pharmacol 2019; 258:373-393. [PMID: 31267166 DOI: 10.1007/164_2019_252] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Tobacco dependence is a leading cause of preventable disease and death worldwide. Nicotine, the main psychoactive component in tobacco cigarettes, has also been garnering increased popularity in its vaporized form, as derived from e-cigarette devices. Thus, an understanding of the molecular mechanisms underlying nicotine pharmacology and dependence is required to ascertain novel approaches to treat drug dependence. In this chapter, we review the field's current understanding of nicotine's actions in the brain, the neurocircuitry underlying drug dependence, factors that modulate the function of nicotinic acetylcholine receptors, and the role of specific genes in mitigating the vulnerability to develop nicotine dependence. In addition to nicotine's direct actions in the brain, other constituents in nicotine and tobacco products have also been found to alter drug use, and thus, evidence is provided to highlight this issue. Finally, currently available pharmacotherapeutic strategies are discussed, along with an outlook for future therapeutic directions to achieve to the goal of long-term nicotine cessation.
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Affiliation(s)
- Christie D Fowler
- Department of Neurobiology and Behavior, University of California Irvine, Irvine, CA, USA
| | - Jill R Turner
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY, USA
| | - M Imad Damaj
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, VA, USA. .,Translational Research Initiative for Pain and Neuropathy at VCU, Richmond, VA, USA.
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36
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Huang J, Ren Y, Xu Y, Chen T, Xia TC, Li Z, Zhao J, Hua F, Sheng S, Xia Y. The delta-opioid receptor and Parkinson's disease. CNS Neurosci Ther 2018; 24:1089-1099. [PMID: 30076686 PMCID: PMC6489828 DOI: 10.1111/cns.13045] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Revised: 07/10/2018] [Accepted: 07/15/2018] [Indexed: 12/15/2022] Open
Abstract
Parkinson's disease (PD) is a common degenerative neurological disease leading to a series of familial, medical, and social problems. Although it is known that the major characteristics of PD pathophysiology are the dysfunction of basal ganglia due to injury/loss of dopaminergic neurons in the substantia nigra pars compacta dopaminergic and exhaustion of corpus striatum dopamine, therapeutic modalities for PD are limited in clinical settings up to date. It is of utmost importance to better understand PD pathophysiology and explore new solutions for this serious neurodegenerative disorder. Our recent work and those of others suggest that the delta-opioid receptor (DOR) is neuroprotective and serves an antiparkinsonism role in the brain. This review summarizes recent progress in this field and explores potential mechanisms for DOR-mediated antiparkinsonism.
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Affiliation(s)
- Jin‐Zhong Huang
- The Third Affiliated Hospital of Soochow UniversityChangzhouJiangsuChina
| | - Yi Ren
- The Third Affiliated Hospital of Soochow UniversityChangzhouJiangsuChina
| | - Yuan Xu
- The Third Affiliated Hospital of Soochow UniversityChangzhouJiangsuChina
| | - Tao Chen
- Hainan General HospitalHaikouHainanChina
| | | | - Zhuo‐Ri Li
- Hainan General HospitalHaikouHainanChina
| | | | - Fei Hua
- The Third Affiliated Hospital of Soochow UniversityChangzhouJiangsuChina
| | - Shi‐Ying Sheng
- The Third Affiliated Hospital of Soochow UniversityChangzhouJiangsuChina
| | - Ying Xia
- Shanghai Key Laboratory of Acupuncture Mechanism and Acupoint FunctionFudan UniversityShanghaiChina
- Department of Aeronautics and AstronauticsFudan UniversityShanghaiChina
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37
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Srinivasan S, Totiger T, Shi C, Castellanos J, Lamichhane P, Dosch AR, Messaggio F, Kashikar N, Honnenahally K, Ban Y, Merchant NB, VanSaun M, Nagathihalli NS. Tobacco Carcinogen-Induced Production of GM-CSF Activates CREB to Promote Pancreatic Cancer. Cancer Res 2018; 78:6146-6158. [PMID: 30232221 PMCID: PMC6214726 DOI: 10.1158/0008-5472.can-18-0579] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Revised: 07/26/2018] [Accepted: 09/10/2018] [Indexed: 12/13/2022]
Abstract
Although smoking is a significant risk factor for pancreatic ductal adenocarcinoma (PDAC), the molecular mechanisms underlying PDAC development and progression in smokers are still unclear. Here, we show the role of cyclic AMP response element-binding protein (CREB) in the pathogenesis of smoking-induced PDAC. Smokers had significantly higher levels of activated CREB when compared with nonsmokers. Cell lines derived from normal pancreas and pancreatic intraepithelial neoplasm (PanIN) exhibited low baseline pCREB levels compared with PDAC cell lines. Furthermore, elevated CREB expression correlated with reduced survival in patients with PDAC. Depletion of CREB significantly reduced tumor burden after tobacco-specific nitrosamine 4-(methyl nitrosamino)-1-(3-pyridyl)-1-butanone (NNK) treatment, suggesting a CREB-dependent contribution to PDAC growth and progression in smokers. Conversely, NNK accelerated PanIN lesion and PDAC formation via GM-CSF-mediated activation of CREB in a PDAC mouse model. CREB inhibition (CREBi) in mice more effectively reduced primary tumor burden compared with control or GM-CSF blockade alone following NNK exposure. GM-CSF played a role in the recruitment of tumor-associated macrophages (TAM) and regulatory T cell (Treg) expansion and promotion, whereas CREBi significantly reduced TAM and Treg populations in NNK-exposed mice. Overall, these results suggest that NNK exposure leads to activation of CREB through GM-CSF, promoting inflammatory and Akt pathways. Direct inhibition of CREB, but not GM-CSF, effectively abrogates these effects and inhibits tumor progression, offering a viable therapeutic strategy for patients with PDAC.Significance: These findings identify GM-CSF-induced CREB as a driver of pancreatic cancer in smokers and demonstrate the therapeutic potential of targeting CREB to reduce PDAC tumor growth.Graphical Abstract: http://cancerres.aacrjournals.org/content/canres/78/21/6146/F1.large.jpg Cancer Res; 78(21); 6146-58. ©2018 AACR.
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Affiliation(s)
- Supriya Srinivasan
- Department of Surgery, University of Miami Miller School of Medicine, Miami, Florida
| | - Tulasigeri Totiger
- Department of Surgery, University of Miami Miller School of Medicine, Miami, Florida
| | - Chanjuan Shi
- Department of Pathology, Vanderbilt University School of Medicine, Nashville, Tennessee
| | - Jason Castellanos
- Department of Surgery, Vanderbilt University School of Medicine, Nashville, Tennessee
| | | | - Austin R Dosch
- Department of Surgery, University of Miami Miller School of Medicine, Miami, Florida
| | - Fanuel Messaggio
- Department of Surgery, University of Miami Miller School of Medicine, Miami, Florida
| | - Nilesh Kashikar
- Department of Pathology, University of Colorado, Denver, Colorado
| | | | - Yuguang Ban
- Department of Public Health, University of Miami Miller School of Medicine, Miami, Florida
| | - Nipun B Merchant
- Department of Surgery, University of Miami Miller School of Medicine, Miami, Florida
- Sylvester Comprehensive Cancer Center, University of Miami, Miami, Florida
| | - Michael VanSaun
- Department of Surgery, University of Miami Miller School of Medicine, Miami, Florida
- Sylvester Comprehensive Cancer Center, University of Miami, Miami, Florida
| | - Nagaraj S Nagathihalli
- Department of Surgery, University of Miami Miller School of Medicine, Miami, Florida.
- Sylvester Comprehensive Cancer Center, University of Miami, Miami, Florida
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Understanding the Opioid Epidemic: Factors Predictive of Inpatient and Postdischarge Prescription Opioid Use After Orthopaedic Trauma. J Orthop Trauma 2018; 32:e408-e414. [PMID: 30247285 DOI: 10.1097/bot.0000000000001256] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
OBJECTIVE The purpose of this study was to determine which factors influence inpatient and postdischarge opioid use after orthopaedic trauma. DESIGN Retrospective cohort study. SETTING Single Level 1 trauma center. PARTICIPANTS The study included 235 adult trauma patients treated operatively for fracture with minimum 1 overnight hospital stay. INTERVENTION Operative fracture management. MAIN OUTCOME MEASUREMENT Total opioid pain medication use, in oral morphine equivalents, in inpatient and postdischarge settings. RESULTS Controlling for length of stay, inpatient opioid use was negatively correlated with age and positively correlated with Injury Severity Score, intensive care unit (ICU) admission, and baseline tobacco use (P < 0.0001, adjusted R = 0.274). Discharge opioid prescription amount was negatively correlated with age, the presence of a complication, and ICU admission and positively correlated with inpatient opioid use (P < 0.0001, adjusted R = 0.201). Postdischarge opioid use was associated with larger amounts of opioids prescribed at discharge, a patient history of alcohol use at baseline, and ICU admission (P < 0.0001, R = 0.123). CONCLUSION Nonmodifiable factors accounted for the level of inpatient opioid use in a trauma population. Higher inpatient use predicts larger opioid prescriptions at discharge, whereas larger discharge prescription predicts greater postdischarge opioid use. Strategies to reduce postdischarge opioid use should begin with reductions in inpatient opioid use. Multimodal pain strategies may be needed to achieve this goal. LEVEL OF EVIDENCE Prognostic Level III. See Instructions for Authors for a complete description of levels of evidence.
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Keyworth H, Georgiou P, Zanos P, Rueda AV, Chen Y, Kitchen I, Camarini R, Cropley M, Bailey A. Wheel running during chronic nicotine exposure is protective against mecamylamine-precipitated withdrawal and up-regulates hippocampal α7 nACh receptors in mice. Br J Pharmacol 2018; 175:1928-1943. [PMID: 29266170 PMCID: PMC5978981 DOI: 10.1111/bph.14068] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2017] [Revised: 09/17/2017] [Accepted: 09/24/2017] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND AND PURPOSE Evidence suggests that exercise decreases nicotine withdrawal symptoms in humans; however, the mechanisms mediating this effect are unclear. We investigated, in a mouse model, the effect of exercise intensity during chronic nicotine exposure on nicotine withdrawal severity, binding of α4β2*, α7 nicotinic acetylcholine (nAChR), μ-opioid (μ receptors) and D2 dopamine receptors and on brain-derived neurotrophic factor (BDNF) and plasma corticosterone levels. EXPERIMENTAL APPROACH Male C57Bl/6J mice treated with nicotine (minipump, 24 mg·kg-1 ·day-1 ) or saline for 14 days underwent one of three concurrent exercise regimes: 24, 2 or 0 h·day-1 voluntary wheel running. Mecamylamine-precipitated withdrawal symptoms were assessed on day 14. Quantitative autoradiography of α4β2*, α7 nAChRs, μ receptors and D2 receptor binding was performed in brain sections of these mice. Plasma corticosterone and brain BDNF levels were also measured. KEY RESULTS Nicotine-treated mice undertaking 2 or 24 h·day-1 wheel running displayed a significant reduction in withdrawal symptom severity compared with the sedentary group. Wheel running induced a significant up-regulation of α7 nAChR binding in the CA2/3 area of the hippocampus of nicotine-treated mice. Neither exercise nor nicotine treatment affected μ or D2 receptor binding or BDNF levels. Nicotine withdrawal increased plasma corticosterone levels and α4β2* nAChR binding, irrespective of exercise regimen. CONCLUSIONS AND IMPLICATIONS We demonstrated for the first time a profound effect of exercise on α7 nAChRs in nicotine-dependent animals, irrespective of exercise intensity. These findings shed light onto the mechanism underlining the protective effect of exercise on the development of nicotine dependence. LINKED ARTICLES This article is part of a themed section on Nicotinic Acetylcholine Receptors. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v175.11/issuetoc.
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Affiliation(s)
- Helen Keyworth
- School of Biosciences and Medicine, Faculty of Health and Medical SciencesUniversity of SurreyGuildfordSurreyUK
| | - Polymnia Georgiou
- School of Biosciences and Medicine, Faculty of Health and Medical SciencesUniversity of SurreyGuildfordSurreyUK
- Department of PsychiatryUniversity of Maryland School of MedicineBaltimoreMDUSA
| | - Panos Zanos
- School of Biosciences and Medicine, Faculty of Health and Medical SciencesUniversity of SurreyGuildfordSurreyUK
- Department of PsychiatryUniversity of Maryland School of MedicineBaltimoreMDUSA
| | - André Veloso Rueda
- Department of Pharmacology, Institute of Biomedical SciencesUniversity of São PauloSão PauloBrazil
| | - Ying Chen
- School of Biosciences and Medicine, Faculty of Health and Medical SciencesUniversity of SurreyGuildfordSurreyUK
- Institute of Psychiatry, Psychology and Neuroscience, Division of Academic PsychiatryKing's College LondonLondonUK
| | - Ian Kitchen
- School of Biosciences and Medicine, Faculty of Health and Medical SciencesUniversity of SurreyGuildfordSurreyUK
| | - Rosana Camarini
- Department of Pharmacology, Institute of Biomedical SciencesUniversity of São PauloSão PauloBrazil
| | - Mark Cropley
- School of Psychology, Faculty of Health and Medical SciencesUniversity of SurreySurreyUK
| | - Alexis Bailey
- School of Biosciences and Medicine, Faculty of Health and Medical SciencesUniversity of SurreyGuildfordSurreyUK
- Institute of Medical and Biomedical EducationSt George's University of LondonLondonUK
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Brynildsen JK, Lee BG, Perron IJ, Jin S, Kim SF, Blendy JA. Activation of AMPK by metformin improves withdrawal signs precipitated by nicotine withdrawal. Proc Natl Acad Sci U S A 2018; 115:4282-4287. [PMID: 29610348 PMCID: PMC5910809 DOI: 10.1073/pnas.1707047115] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Cigarette smoking is the leading cause of preventable disease and death in the United States, with more persons dying from nicotine addiction than any other preventable cause of death. Even though smoking cessation incurs multiple health benefits, the abstinence rate remains low with current medications. Here we show that the AMP-activated protein kinase (AMPK) pathway in the hippocampus is activated following chronic nicotine use, an effect that is rapidly reversed by nicotine withdrawal. Increasing pAMPK levels and, consequently, downstream AMPK signaling pharmacologically attenuate anxiety-like behavior following nicotine withdrawal. We show that metformin, a known AMPK activator in the periphery, reduces withdrawal symptoms through a mechanism dependent on the presence of the AMPKα subunits within the hippocampus. This study provides evidence of a direct effect of AMPK modulation on nicotine withdrawal symptoms and suggests central AMPK activation as a therapeutic target for smoking cessation.
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Affiliation(s)
- Julia K Brynildsen
- Department of Systems Pharmacology and Translational Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104
| | - Bridgin G Lee
- Department of Systems Pharmacology and Translational Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104
| | - Isaac J Perron
- Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104
| | - Sunghee Jin
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21224
| | - Sangwon F Kim
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21224;
- Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD 21224
| | - Julie A Blendy
- Department of Systems Pharmacology and Translational Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104;
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Kowiański P, Lietzau G, Steliga A, Czuba E, Ludkiewicz B, Waśkow M, Spodnik JH, Moryś J. Nicotine-induced CREB and DeltaFosB activity is modified by caffeine in the brain reward system of the rat. J Chem Neuroanat 2018; 88:1-12. [PMID: 29100904 DOI: 10.1016/j.jchemneu.2017.10.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Revised: 10/30/2017] [Accepted: 10/31/2017] [Indexed: 12/21/2022]
Abstract
Coffee and nicotine consumption are frequently combined, indicating possible intensifying effect of caffeine on smoking behavior, although neurobiological background of this phenomenon remains unknown. We aimed at determining the effect of caffeine and nicotine, applied separately or simultaneously, on activation of six structures of the brain reward system: nucleus accumbens (NAc), ventral tegmental area (VTA), amygdala (Amg), hippocampus (Hip), medial prefrontal cortex (mPfr) and dorsal striatum (CdP) in the adult male Wistar rats. Activation of two transcription factors, the phosphorylated form of cyclic AMP-response element binding protein (pCREB) and DeltaFosB (ΔFosB) was assessed by immunohistochemistry after multiple-dose five-days psychostimulants administration followed by 20min and 24h survival, respectively. Nicotine evoked the highest increase of pCREB-immunoreactivity (-ir) in NAc, while caffeine exerted the weakest effect in mPfr and CdP. Nicotine/caffeine co-administration resulted in decrease of pCREB-ir in NAc and increase in Amg, compared with the effect of each psychostimulant used separately. Nicotine was the strongest psychostimulant activating ΔFosB-ir in Amg, whereas caffeine - in Hip. Nicotine/caffeine-exerted effect upon ΔFosB-ir in Amg was weaker, whereas in mPfr stronger, than nicotine-evoked effect in these structures. In summary, pCREB and ΔFosB activation is dependent on the type of stimulus, brain structure and functional context. Activation of both transcription factors is responsible for caffeine's modifying effect upon nicotine-related behaviors and must be taken into account while quitting cigarette smoking.
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Affiliation(s)
- Przemysław Kowiański
- Department of Anatomy and Neurobiology, Medical University of Gdansk, 1 Debinki Str., 80-211 Gdansk, Poland; Department of Health Sciences, Pomeranian University of Slupsk, 64 Bohaterów Westerplatte Str., 76-200 Slupsk, Poland.
| | - Grażyna Lietzau
- Department of Anatomy and Neurobiology, Medical University of Gdansk, 1 Debinki Str., 80-211 Gdansk, Poland; Department of Clinical Science and Education, Södersjukhuset, Internal Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Aleksandra Steliga
- Department of Health Sciences, Pomeranian University of Slupsk, 64 Bohaterów Westerplatte Str., 76-200 Slupsk, Poland
| | - Ewelina Czuba
- Department of Anatomy and Neurobiology, Medical University of Gdansk, 1 Debinki Str., 80-211 Gdansk, Poland
| | - Beata Ludkiewicz
- Department of Anatomy and Neurobiology, Medical University of Gdansk, 1 Debinki Str., 80-211 Gdansk, Poland
| | - Monika Waśkow
- Department of Health Sciences, Pomeranian University of Slupsk, 64 Bohaterów Westerplatte Str., 76-200 Slupsk, Poland
| | - Jan H Spodnik
- Department of Anatomy and Neurobiology, Medical University of Gdansk, 1 Debinki Str., 80-211 Gdansk, Poland
| | - Janusz Moryś
- Department of Anatomy and Neurobiology, Medical University of Gdansk, 1 Debinki Str., 80-211 Gdansk, Poland
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Alpha-asarone attenuates depression-like behavior in nicotine-withdrawn mice: Evidence for the modulation of hippocampal pCREB levels during nicotine-withdrawal. Eur J Pharmacol 2018; 818:10-16. [DOI: 10.1016/j.ejphar.2017.10.025] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Revised: 10/13/2017] [Accepted: 10/13/2017] [Indexed: 12/16/2022]
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Collins D, Randesi M, da Rosa JC, Zhang Y, Kreek MJ. Oprm1 A112G, a single nucleotide polymorphism, alters expression of stress-responsive genes in multiple brain regions in male and female mice. Psychopharmacology (Berl) 2018; 235:2703-2711. [PMID: 30027498 PMCID: PMC6132675 DOI: 10.1007/s00213-018-4965-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Accepted: 07/02/2018] [Indexed: 12/12/2022]
Abstract
BACKGROUND OPRM1 A118G, a functional human mu-opioid receptor (MOR) polymorphism, is associated with drug dependence and altered stress responsivity in humans as well as altered MOR signaling. MOR signaling can regulate many cellular processes, including gene expression, and many of the long-term, stable effects of drugs and stress may stem from changes in gene expression in diverse brain regions. A mouse model bearing an equivalent polymorphism (Oprm1 A112G) was previously generated and studied. Mice homozygous for the G112 allele show differences in opioid- and stress-related phenotypes. APPROACH The current study examines the expression of 24 genes related to drug and stress responsivity in the caudoputamen, nucleus accumbens, hypothalamus, hippocampus, and amygdala of drug-naïve, stress-minimized, male and female mice homozygous for either the G112 variant allele or the wild-type A112 allele. RESULTS We detected nominal genotype-dependent changes in gene expression of multiple genes. We also detected nominal sex-dependent as well as sex-by-genotype interaction effects on gene expression. Of these, four genotype-dependent differences survived correction for multiple testing: Avp and Gal in the hypothalamus and Oprl1 and Cnr1 in the hippocampus. CONCLUSIONS Changes in the regulation of these genes by mu-opioid receptors encoded by the G112 allele may be involved in some of the behavioral and molecular consequences of this polymorphism observed in mice.
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Affiliation(s)
- Devon Collins
- The Laboratory of the Biology of Addictive Diseases, The Rockefeller University, 1230 York Avenue, New York, NY, 10065, USA.
| | - Matthew Randesi
- 0000 0001 2166 1519grid.134907.8The Laboratory of the Biology of Addictive Diseases, The Rockefeller University, 1230 York Avenue, New York, NY 10065 USA
| | - Joel Correa da Rosa
- 0000 0001 2166 1519grid.134907.8Laboratory of Investigative Dermatology, The Rockefeller University, 1230 York Avenue, New York, NY 10065 USA
| | - Yong Zhang
- 0000 0001 2166 1519grid.134907.8The Laboratory of the Biology of Addictive Diseases, The Rockefeller University, 1230 York Avenue, New York, NY 10065 USA
| | - Mary Jeanne Kreek
- 0000 0001 2166 1519grid.134907.8The Laboratory of the Biology of Addictive Diseases, The Rockefeller University, 1230 York Avenue, New York, NY 10065 USA
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Flanagan CD, Fuell Wysong E, Ramey JS, Gunasekar A, Vallier HA. Traumatic Orthopaedic Injury Is Not an Independent Risk Factor for High Postdischarge Opioid Consumption. J Am Acad Orthop Surg Glob Res Rev 2017; 1:e058. [PMID: 30211368 PMCID: PMC6132338 DOI: 10.5435/jaaosglobal-d-17-00058] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2016] [Accepted: 07/14/2016] [Indexed: 01/04/2023]
Abstract
INTRODUCTION The purpose of this study was to quantify how opioid use in patients with traumatic injury compared with opioid use in patients undergoing elective arthroplasty. METHODS In a retrospective review, 235 adult trauma patients treated surgically for fracture were compared with 98 patients undergoing elective total hip or knee arthroplasty. Inpatient, discharge, and postdischarge opioid use were recorded in oral morphine equivalents (OMEs). RESULTS There were no differences between trauma and elective arthroplasty patients for inpatient opioid use (OME/day: 70.2 vs. 67.3; P = 0.53), discharge prescription (OME: 542 vs. 594; P = 0.13), or postdischarge opioid use (OME: 986 vs. 1,147; P = 0.29). Postdischarge opioid use was positively correlated with Caucasian race, intensive care unit admission, baseline alcohol or opioid use, and higher discharge prescriptions (P < 0.0001; adjusted R2 = 0.127). Discharge prescription amount was the most significant predictor. DISCUSSION Traumatic injury is not a predictor of high post-discharge opioid use. Demographic, social, and physician prescribing behaviors contribute to higher postdischarge opioid consumption.
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Affiliation(s)
- Christopher D Flanagan
- Department of Orthopaedic Surgery, MetroHealth Medical Center, Case Western Reserve University, Cleveland, OH
| | - Elena Fuell Wysong
- Department of Orthopaedic Surgery, MetroHealth Medical Center, Case Western Reserve University, Cleveland, OH
| | - J Scott Ramey
- Department of Orthopaedic Surgery, MetroHealth Medical Center, Case Western Reserve University, Cleveland, OH
| | - Ashwath Gunasekar
- Department of Orthopaedic Surgery, MetroHealth Medical Center, Case Western Reserve University, Cleveland, OH
| | - Heather A Vallier
- Department of Orthopaedic Surgery, MetroHealth Medical Center, Case Western Reserve University, Cleveland, OH
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Wang H, Zhang Y, Li H, Zeng W, Qiao M. Shuyu capsules relieve liver- qi depression by regulating ERK-CREB-BDNF signal pathway in central nervous system of rat. Exp Ther Med 2017; 14:4831-4838. [PMID: 29201187 PMCID: PMC5704346 DOI: 10.3892/etm.2017.5125] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Accepted: 09/11/2017] [Indexed: 01/26/2023] Open
Abstract
The purpose of this study was to investigate the possible therapeutic mechanism of Shuyu capsules in liver-qi depression. Liver-qi depression rats were prepared based on chronic unpredictable mild stress (CUMS) and delayed constraint. Rats were gavaged with Shuyu capsule, fluoxetine, Radix Bupleuri and Radix Paeoniae Alba to constrct rat models. Body weight test, sucrose preference test and open-field test were applied to test rat models. Western blot analysis and quantitative real-time PCR was applied to determine the relative expression of extracellular signal-regulated protein kinase (ERK), cyclic AMP response element binding protein (CREB) and brain-derived neurotrophic factor (BDNF) in hippocampus and frontal lobe tissues. ELISA was used to detect the content of BDNF in serum. Body weight, sugar intake and total distance were significantly decreased in depression group compared with control. The four drugs significantly increased levels of these factors. Compared with control group, ERK, CREB and BDNF expression were significantly decreased in depression group in both hippocampus and frontal lobe tissues at both mRNA and protein level. Shuyu capsule and fluoxetine group showed a significant increase in the expression of ERK, CREB and BDNF at mRNA, p-ERK and p-BDNF at protein level. Compared with Radix Paeoniae Alba, Radix Bupleuri were better in the rescue of ERK, CREB and BDNF expression. In conclusion, the pathogenesis of liver-qi depression associated with lower expression of ERK, CREB and BDNF in hippocampus and frontal. Shuyu capsule and main constitution alleviated the depressive-like behaviors and reversed the disruptions of the p-ERK, p-CREB and BDNF in stressed rats.
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Affiliation(s)
- Hongyan Wang
- Department of Traditional Chinese Medicine, Taishan Medical University, Tai'an, Shandong 271000, P.R. China
| | - Yingquan Zhang
- Department of Internal Medicine, The Hospital of Traditional Chinese Medicine of Tai'an, Tai'an, Shandong 271000, P.R. China
| | - Helou Li
- Department of Laboratory, Taishan Medical University, Tai'an, Shandong 271000, P.R. China
| | - Wei Zeng
- Department of Cardiology, Taishan Medical University, Tai'an, Shandong 271000, P.R. China
| | - Mingqi Qiao
- Shandong University of Traditional Chinese Medicine, Jinan, Shandong 250355, P.R. China
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Hirasawa-Fujita M, Bly MJ, Ellingrod VL, Dalack GW, Domino EF. Genetic Variation of the Mu Opioid Receptor (OPRM1) and Dopamine D2 Receptor (DRD2) is Related to Smoking Differences in Patients with Schizophrenia but not Bipolar Disorder. CLINICAL SCHIZOPHRENIA & RELATED PSYCHOSES 2017; 11:39-48. [PMID: 28548579 PMCID: PMC4366347 DOI: 10.3371/1935-1232-11.1.39] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
It is not known why mentally ill persons smoke excessively. Inasmuch as endogenous opioid and dopaminergic systems are involved in smoking reinforcement, it is important to study mu opioid receptor (OPRM1) A118G (rs1799971), dopamine D2 receptor (DRD2) Taq1A (rs1800497) genotypes, and sex differences among patients with schizophrenia or bipolar disorder. Smokers and nonsmokers with schizophrenia (n=177) and bipolar disorder (n=113) were recruited and genotyped. They were classified into three groups: current smoker, former smoker, and never smoker by tobacco smoking status self-report. The number of cigarettes smoked per day was used as the major tobacco smoking parameter. In patients with schizophrenia, tobacco smoking prevalence was greater in males than in females as expected, but women had greater daily cigarette consumption (p<0.01). Subjects with schizophrenia who had the OPRM1 *G genotype smoked more cigarettes per day than the AA allele carriers with schizophrenia (p<0.05). DRD2 Taq1A genotype differences had no effect on the number of cigarettes smoked per day. However, female smokers with schizophrenia who were GG homozygous of the DRD2 receptor smoked more than the *A male smokers with schizophrenia (p<0.05). In bipolar patients, there were no OPRM1 and DRD2 Taq1A genotype differences in smoking status. There also were no sex differences for smoking behavior among the bipolar patients. The results of this study indicate that single nucleotide polymorphism (SNP) of the less functional mu opioid receptor increases tobacco smoking in patients with schizophrenia. Alteration of DRD2 receptor function also increased smoking behavior in females with schizophrenia.
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Distinct Roles of CREB Within the Ventral and Dorsal Hippocampus in Mediating Nicotine Withdrawal Phenotypes. Neuropsychopharmacology 2017; 42:1599-1609. [PMID: 27848935 PMCID: PMC5518892 DOI: 10.1038/npp.2016.257] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Revised: 10/12/2016] [Accepted: 11/09/2016] [Indexed: 01/06/2023]
Abstract
Addiction to nicotine and the inability to quit smoking are influenced by genetic factors, emphasizing the importance of understanding how genes and drugs of abuse mechanistically impact each other. One well-characterized protein responsible for regulating both response to drugs and gene expression is the transcription factor CREB (cAMP-responsive element binding protein). Previous work indicates that hippocampal-specific alterations in CREB signaling and synaptic plasticity may underlie certain nicotine withdrawal phenotypes. However, the structure of the hippocampus possesses dorsal and ventral subregions, each differing in behavioral, anatomic and gene expression characteristics. This study examines the effects of CREB deletion specifically in the ventral or dorsal hippocampus of animals chronically treated with saline, nicotine, or undergoing 24 h withdrawal. After region-specific viral injections of AAV-GFP or AAV-CRE in CREBloxP/loxP animals, behavioral testing measured anxiety levels, using the Novelty-Induced Hypophagia test, and cognition, using a contextual fear conditioning paradigm. Deletion of CREB in the ventral, but not dorsal, hippocampus resulted in amelioration of nicotine withdrawal-induced anxiety-like behavior in the Novelty-Induced Hypophagia test. In contrast, CREB deletion in the dorsal hippocampus resulted in learning and memory deficits in fear conditioning, whereas CREB deletion in the ventral hippocampus showed an enhancement in learning. Gene expression analysis showed differential treatment- and region-dependent alterations of several CREB target genes that are well-known markers of neuroplasticity within the hippocampus. Collectively, these data provide persuasive evidence towards the distinct roles of CREB within the dorsal and ventral hippocampus separately in mediating select nicotine withdrawal phenotypes.
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Norman H, D'Souza MS. Endogenous opioid system: a promising target for future smoking cessation medications. Psychopharmacology (Berl) 2017; 234:1371-1394. [PMID: 28285326 DOI: 10.1007/s00213-017-4582-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/01/2016] [Accepted: 02/24/2017] [Indexed: 01/09/2023]
Abstract
BACKGROUND Nicotine addiction continues to be a health challenge across the world. Despite several approved medications, smokers continue to relapse. Several human and animal studies have evaluated the role of the endogenous opioid system as a potential target for smoking cessation medications. METHODS In this review, studies that have elucidated the role of the mu (MORs), delta (DORs), and kappa (KORs) opioid receptors in nicotine reward, nicotine withdrawal, and reinstatement of nicotine seeking will be discussed. Additionally, the review will discuss discrepancies in the literature and therapeutic potential of the endogenous opioid system, and suggest studies to address gaps in knowledge with respect to the role of the opioid receptors in nicotine dependence. RESULTS Data available till date suggest that blockade of the MORs and DORs decreased the rewarding effects of nicotine, while activation of the MORs and DORs decreased nicotine withdrawal-induced aversive effects. In contrast, activation of the KORs decreased the rewarding effects of nicotine, while blockade of the KORs decreased nicotine withdrawal-induced aversive effects. Interestingly, blockade of the MORs and KORs attenuated reinstatement of nicotine seeking. In humans, MOR antagonists have shown benefits in select subpopulations of smokers and further investigation is required to realize their full therapeutic potential. CONCLUSION Future work must assess the influence of polymorphisms in opioid receptor-linked genes in nicotine dependence, which will help in both identifying individuals vulnerable to nicotine addiction and the development of opioid-based smoking cessation medications. Overall, the endogenous opioid system continues to be a promising target for future smoking cessation medications.
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Affiliation(s)
- Haval Norman
- Department of Pharmaceutical and Biomedical Sciences, The Raabe College of Pharmacy, Ohio Northern University, 525 S Main Street, Ada, OH, 45810, USA
| | - Manoranjan S D'Souza
- Department of Pharmaceutical and Biomedical Sciences, The Raabe College of Pharmacy, Ohio Northern University, 525 S Main Street, Ada, OH, 45810, USA.
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Aracri P, Meneghini S, Coatti A, Amadeo A, Becchetti A. α4β2 ∗ nicotinic receptors stimulate GABA release onto fast-spiking cells in layer V of mouse prefrontal (Fr2) cortex. Neuroscience 2016; 340:48-61. [PMID: 27793780 PMCID: PMC5231322 DOI: 10.1016/j.neuroscience.2016.10.045] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2016] [Revised: 10/08/2016] [Accepted: 10/18/2016] [Indexed: 11/24/2022]
Abstract
α4β2∗ nAChRs stimulate IPSCs in FS interneurons, in layer V of the mouse PFC (Fr2). In P16–P63 mice, nicotine increased both IPSC and mIPSC frequencies. GABAergic terminals adjacent to PV+ cells expressed α4 nAChR. The percentage of FS cells with somatic α4β2∗ currents decreased with age. Hence, nAChRs may be able to induce local circuit disinhibition in Fr2 PFC.
Nicotinic acetylcholine receptors (nAChRs) produce widespread and complex effects on neocortex excitability. We studied how heteromeric nAChRs regulate inhibitory post-synaptic currents (IPSCs), in fast-spiking (FS) layer V neurons of the mouse frontal area 2 (Fr2). In the presence of blockers of ionotropic glutamate receptors, tonic application of 10 μM nicotine augmented the spontaneous IPSC frequency, with minor alterations of amplitudes and kinetics. These effects were studied since the 3rd postnatal week, and persisted throughout the first two months of postnatal life. The action of nicotine was blocked by 1 μM dihydro-β-erythroidine (DHβE; specific for α4∗ nAChRs), but not 10 nM methyllycaconitine (MLA; specific for α7∗ nAChRs). It was mimicked by 10 nM 5-iodo-3-[2(S)-azetidinylmethoxy]pyridine (5-IA; which activates β2∗ nAChRs). Similar results were obtained on miniature IPSCs (mIPSCs). Moreover, during the first five postnatal weeks, approximately 50% of FS cells displayed DHβE-sensitive whole-cell nicotinic currents. This percentage decreased to ∼5% in mice older than P45. By confocal microscopy, the α4 nAChR subunit was immunocytochemically identified on interneurons expressing either parvalbumin (PV), which mainly labels FS cells, or somatostatin (SOM), which labels the other major interneuron population in layer V. GABAergic terminals expressing α4 were observed to be juxtaposed to PV-positive (PV+) cells. A fraction of these terminals displayed PV immunoreactivity. We conclude that α4β2∗ nAChRs can produce sustained regulation of FS cells in Fr2 layer V. The effect presents a presynaptic component, whereas the somatic regulation decreases with age. These mechanisms may contribute to the nAChR-dependent stimulation of excitability during cognitive tasks as well as to the hyperexcitability caused by hyperfunctional heteromeric nAChRs in sleep-related epilepsy.
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Affiliation(s)
- Patrizia Aracri
- Department of Biotechnology and Biosciences, and NeuroMI (Milan Center of Neuroscience), University of Milano-Bicocca, piazza della Scienza 2, Milano 20126, Italy
| | - Simone Meneghini
- Department of Biotechnology and Biosciences, and NeuroMI (Milan Center of Neuroscience), University of Milano-Bicocca, piazza della Scienza 2, Milano 20126, Italy
| | - Aurora Coatti
- Department of Biotechnology and Biosciences, and NeuroMI (Milan Center of Neuroscience), University of Milano-Bicocca, piazza della Scienza 2, Milano 20126, Italy
| | - Alida Amadeo
- Department of Biosciences, University of Milano, Via Celoria 26, Milano 20133, Italy
| | - Andrea Becchetti
- Department of Biotechnology and Biosciences, and NeuroMI (Milan Center of Neuroscience), University of Milano-Bicocca, piazza della Scienza 2, Milano 20126, Italy.
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Nuechterlein EB, Ni L, Domino EF, Zubieta JK. Nicotine-specific and non-specific effects of cigarette smoking on endogenous opioid mechanisms. Prog Neuropsychopharmacol Biol Psychiatry 2016; 69:69-77. [PMID: 27095017 PMCID: PMC4891463 DOI: 10.1016/j.pnpbp.2016.04.006] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Revised: 03/30/2016] [Accepted: 04/12/2016] [Indexed: 12/25/2022]
Abstract
This study investigates differences in μ-opioid receptor mediated neurotransmission in healthy controls and overnight-abstinent smokers, and potential effects of the OPRM1 A118G genotype. It also examines the effects of smoking denicotinized (DN) and average nicotine (N) cigarettes on the μ-opioid system. Positron emission tomography with (11)C-carfentanil was used to determine regional brain μ-opioid receptor (MOR) availability (non-displaceable binding potential, BPND) in a sample of 19 male smokers and 22 nonsmoking control subjects. Nonsmokers showed greater MOR BPND than overnight abstinent smokers in the basal ganglia and thalamus. BPND in the basal ganglia was negatively correlated with baseline craving levels and Fagerström scores. Interactions between group and genotype were seen in the nucleus accumbens bilaterally and the amygdala, with G-allele carriers demonstrating lower BPND in these regions, but only among smokers. After smoking the DN cigarette, smokers showed evidence of MOR activation in the thalamus and nucleus accumbens. No additional activation was observed after the N cigarette, with a mean effect of increases in MOR BPND (i.e., deactivation) with respect to the DN cigarette effects in the thalamus and left amygdala. Changes in MOR BPND were related to both Fagerström scores and changes in craving. This study showed that overnight-abstinent smokers have lower concentrations of available MORs than controls, an effect that was related to both craving and the severity of addiction. It also suggests that nicotine non-specific elements of the smoking experience have an important role in regulating MOR-mediated neurotransmission, and in turn modulating withdrawal-induced craving ratings.
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Affiliation(s)
- Emily B. Nuechterlein
- Neuroscience Graduate Program, University of Michigan, Ann Arbor, MI, USA,Molecular and Behavioral Neuroscience Institute, University of Michigan, Ann Arbor, USA
| | - Lisong Ni
- Molecular and Behavioral Neuroscience Institute, University of Michigan, Ann Arbor, USA,Department of Pharmacology, University of Michigan, Ann Arbor, MI, USA
| | - Edward F. Domino
- Department of Pharmacology, University of Michigan, Ann Arbor, MI, USA
| | - Jon-Kar Zubieta
- Molecular and Behavioral Neuroscience Institute, University of Michigan, Ann Arbor, USA,Department of Radiology, University of Michigan, Ann Arbor, MI, USA,Department of Psychiatry, University of Michigan, Ann Arbor, USA and Department of PsychiatryI
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