1
|
Anvari S, Javan M, Mirnajafi-Zadeh J, Fathollahi Y. Repeated Morphine Exposure Alters Temporoamonic-CA1 Synaptic Plasticity in Male Rat Hippocampus. Neuroscience 2024; 545:148-157. [PMID: 38513764 DOI: 10.1016/j.neuroscience.2024.03.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 03/11/2024] [Accepted: 03/16/2024] [Indexed: 03/23/2024]
Abstract
In this study, the electrophysiological and biochemical consequences of repeated exposure to morphine in male rats on glutamatergic synaptic transmission, synaptic plasticity, the expression of GABA receptors and glutamate receptors at the temporoammonic-CA1 synapse along the longitudinal axis of the hippocampus (dorsal, intermediate, ventral, DH, IH, VH, respectively) were investigated. Slice electrophysiological methods, qRT-PCR, and western blotting techniques were used to characterize synaptic plasticity properties. We showed that repeated morphine exposure (RME) reduced excitatory synaptic transmission and ability for long-term potentiation (LTP) in the VH as well as eliminated the dorsoventral difference in paired-pulse responses. A decreased expression of NR2B subunit in the VH and an increased expression GABAA receptor of α1 and α5 subunits in the DH were observed following RME. Furthermore, RME did not affect the expression of NR2A, AMPA receptor subunits, and γ2GABAA and GABAB receptors in either segment of the hippocampus. In sum, the impact of morphine may differ depending on the region of the hippocampus studied. A distinct change in the short- and long-term synaptic plasticity along the hippocampus long axis due to repeated morphine exposure, partially mediated by a change in the expression profile of glutamatergic receptor subunits. These findings can be useful in further understanding the cellular mechanism underlying deficits in information storage and, more generally, cognitive processes resulting from chronic opioid abuse.
Collapse
Affiliation(s)
- Sohrab Anvari
- Department of Physiology, School of Medical Sciences, Tarbiat Modares University, PO Box 14115-111, Tehran, Iran
| | - Mohammad Javan
- Department of Physiology, School of Medical Sciences, Tarbiat Modares University, PO Box 14115-111, Tehran, Iran
| | - Javad Mirnajafi-Zadeh
- Department of Physiology, School of Medical Sciences, Tarbiat Modares University, PO Box 14115-111, Tehran, Iran
| | - Yaghoub Fathollahi
- Department of Physiology, School of Medical Sciences, Tarbiat Modares University, PO Box 14115-111, Tehran, Iran.
| |
Collapse
|
2
|
Halbout B, Hutson C, Agrawal S, Springs ZA, Ostlund SB. Differential effects of acute and prolonged morphine withdrawal on motivational and goal-directed control over reward-seeking behaviour. Addict Biol 2024; 29:e13393. [PMID: 38706098 PMCID: PMC11070494 DOI: 10.1111/adb.13393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 01/18/2024] [Accepted: 03/14/2024] [Indexed: 05/07/2024]
Abstract
Opioid addiction is a relapsing disorder marked by uncontrolled drug use and reduced interest in normally rewarding activities. The current study investigated the impact of spontaneous withdrawal from chronic morphine exposure on emotional, motivational and cognitive processes involved in regulating the pursuit and consumption of food rewards in male rats. In Experiment 1, rats experiencing acute morphine withdrawal lost weight and displayed somatic signs of drug dependence. However, hedonically driven sucrose consumption was significantly elevated, suggesting intact and potentially heightened reward processing. In Experiment 2, rats undergoing acute morphine withdrawal displayed reduced motivation when performing an effortful response for palatable food reward. Subsequent reward devaluation testing revealed that acute withdrawal disrupted their ability to exert flexible goal-directed control over reward seeking. Specifically, morphine-withdrawn rats were impaired in using current reward value to select actions both when relying on prior action-outcome learning and when given direct feedback about the consequences of their actions. In Experiment 3, rats tested after prolonged morphine withdrawal displayed heightened rather than diminished motivation for food rewards and retained their ability to engage in flexible goal-directed action selection. However, brief re-exposure to morphine was sufficient to impair motivation and disrupt goal-directed action selection, though in this case, rats were only impaired in using reward value to select actions in the presence of morphine-paired context cues and in the absence of response-contingent feedback. We suggest that these opioid-withdrawal induced deficits in motivation and goal-directed control may contribute to addiction by interfering with the pursuit of adaptive alternatives to drug use.
Collapse
Affiliation(s)
- Briac Halbout
- Department of Anesthesiology and Perioperative Care, School of MedicineUniversity of California, IrvineIrvineCaliforniaUSA
| | - Collin Hutson
- Department of Anesthesiology and Perioperative Care, School of MedicineUniversity of California, IrvineIrvineCaliforniaUSA
| | - Stuti Agrawal
- Department of Anesthesiology and Perioperative Care, School of MedicineUniversity of California, IrvineIrvineCaliforniaUSA
| | - Zachary A. Springs
- Department of Anesthesiology and Perioperative Care, School of MedicineUniversity of California, IrvineIrvineCaliforniaUSA
| | - Sean B. Ostlund
- Department of Anesthesiology and Perioperative Care, School of MedicineUniversity of California, IrvineIrvineCaliforniaUSA
- Department of Neurobiology and Behavior, School of Biological SciencesUniversity of California, IrvineIrvineCaliforniaUSA
| |
Collapse
|
3
|
Perry M, LeDuc R, Stakenas S, Wozniak A, Francois A, Evans D. Adductor Canal Nerve Block versus Intra-articular Anesthetic in Knee Arthroscopy: A Single-Blinded Prospective Randomized Trial. J Knee Surg 2024; 37:220-226. [PMID: 36807102 DOI: 10.1055/a-2037-6418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
Effective perioperative pain control following knee arthroscopy allows patients to reduce narcotic intake, avoid side effects of these medications, and recover more quickly. Adductor canal nerve blockade (ACB) and intra-articular injection of local anesthetic have been described as adjuvant treatments for postoperative pain control following surgery of the knee. This study directly compares the effect of each of these treatment modalities. Patients undergoing knee arthroscopy were blinded and randomized to receive either an ACB (n = 60) or intra-articular injection of local anesthetic (IAB, n = 64). Outcome measures included patient reported visual analog scale (VAS) scores at 1, 2, 4, 8, 16, 24, 36, 48 hours and 1 week and total narcotic consumption at 12, 24, and 48 hours postoperatively. Student's t-tests were used to compare unadjusted VAS scores at each time point and use of postoperative pain medication between treatment groups. Adjusted VAS scores were estimated in a multivariable general linear model with interaction of time and treatment group and other relevant covariates. There were no statistically significant differences between the two groups in terms of gender, age, body mass index, and insurance type. ACB patients had significantly higher pain scores than IAB patients at hours 1 and 2 (hour 1: 4.02 [2.99] vs. 2.59 [3.00], p = 0.009; hour 2: 3.12 [2.44] vs. 2.17 [2.62], p = 0.040). ACB patients had higher pain scores than IAB patients up to hour 16, though hours 4 to 16 were not significantly different. Adjusted covariate analyses demonstrate an additional statistically significant reduction in pain score in the IAB group at hour 4. There were no differences in narcotic consumption. Intraoperative local anesthetic and regional ACB each provides adequate pain control following knee arthroscopy, and intraoperative local anesthetic may provide enhanced pain control for up to 4 hours postoperatively. LEVEL OF EVIDENCE: : Level 1 evidence, randomized control trial.
Collapse
Affiliation(s)
- Michael Perry
- Department of Orthopaedic Surgery and Rehabilitation, Loyola University Medical Center, Maywood, Illinois
| | - Ryan LeDuc
- Department of Orthopaedic Surgery and Rehabilitation, Loyola University Medical Center, Maywood, Illinois
| | - Steven Stakenas
- Department of Orthopaedic Surgery and Rehabilitation, Loyola University Medical Center, Maywood, Illinois
| | - Amy Wozniak
- Department of Orthopaedic Surgery and Rehabilitation, Loyola University Medical Center, Maywood, Illinois
| | - Audrice Francois
- Department of Orthopaedic Surgery and Rehabilitation, Loyola University Medical Center, Maywood, Illinois
| | - Douglas Evans
- Department of Orthopaedic Surgery and Rehabilitation, Loyola University Medical Center, Maywood, Illinois
| |
Collapse
|
4
|
Borrelli KN, Wingfield KK, Yao EJ, Zamorano CA, Sena KD, Beierle JA, Roos MA, Zhang H, Wachman EM, Bryant CD. Decreased myelin-related gene expression in the nucleus accumbens during spontaneous neonatal opioid withdrawal in the absence of long-term behavioral effects in adult outbred CFW mice. Neuropharmacology 2023; 240:109732. [PMID: 37774943 PMCID: PMC10598517 DOI: 10.1016/j.neuropharm.2023.109732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 09/23/2023] [Accepted: 09/25/2023] [Indexed: 10/01/2023]
Abstract
Prenatal opioid exposure is a major health concern in the United States, with the incidence of neonatal opioid withdrawal syndrome (NOWS) escalating in recent years. NOWS occurs upon cessation of in utero opioid exposure and is characterized by increased irritability, disrupted sleep patterns, high-pitched crying, and dysregulated feeding. The main pharmacological strategy for alleviating symptoms is treatment with replacement opioids. The neural mechanisms mediating NOWS and the long-term neurobehavioral effects are poorly understood. We used a third trimester-approximate model in which neonatal outbred pups (Carworth Farms White; CFW) were administered once-daily morphine (15 mg/kg, s.c.) from postnatal day (P) day 1 through P14 and were then assessed for behavioral and transcriptomic adaptations within the nucleus accumbens (NAc) on P15. We also investigated the long-term effects of perinatal morphine exposure on adult learning and reward sensitivity. We observed significant weight deficits, spontaneous thermal hyperalgesia, and altered ultrasonic vocalization (USV) profiles following repeated morphine and during spontaneous withdrawal. Transcriptome analysis of NAc from opioid-withdrawn P15 neonates via bulk mRNA sequencing identified an enrichment profile consistent with downregulation of myelin-associated transcripts. Despite the neonatal behavioral and molecular effects, there were no significant long-term effects of perinatal morphine exposure on adult spatial memory function in the Barnes Maze, emotional learning in fear conditioning, or in baseline or methamphetamine-potentiated reward sensitivity as measured via intracranial self-stimulation. Thus, the once daily third trimester-approximate exposure regimen, while inducing NOWS model traits and significant transcriptomic effects in neonates, had no significant long-term effects on adult behaviors.
Collapse
Affiliation(s)
- Kristyn N Borrelli
- Graduate Program for Neuroscience, Boston University, 610 Commonwealth Av, Boston, MA, 02215, USA; T32 Biomolecular Pharmacology PhD Program, Boston University Chobanian & Avedisian School of Medicine, USA; Boston University's Transformative Training Program in Addiction Science, Boston University Chobanian & Avedisian School of Medicine, 72 E. Concord St., L-317, Boston, MA, 02118, USA
| | - Kelly K Wingfield
- T32 Biomolecular Pharmacology PhD Program, Boston University Chobanian & Avedisian School of Medicine, USA; Laboratory of Addiction Genetics, Department of Pharmacology, Physiology & Biophysics, Boston University Chobanian & Avedisian School of Medicine, 72 E. Concord St., L-606, Boston, MA, 02118, USA; Department of Pharmaceutical Sciences, Center for Drug Discovery, Northeastern University, 360 Huntington Av, 140 The Fenway Building, X138, Boston, MA, 02115, USA
| | - Emily J Yao
- Laboratory of Addiction Genetics, Department of Pharmacology, Physiology & Biophysics, Boston University Chobanian & Avedisian School of Medicine, 72 E. Concord St., L-606, Boston, MA, 02118, USA; Department of Pharmaceutical Sciences, Center for Drug Discovery, Northeastern University, 360 Huntington Av, 140 The Fenway Building, X138, Boston, MA, 02115, USA
| | - Catalina A Zamorano
- Boston University's Undergraduate Research Opportunity Program, George Sherman Union, 775 Commonwealth Av, 5th floor, Boston, MA, 02215, USA
| | - Katherine D Sena
- Boston University's Undergraduate Research Opportunity Program, George Sherman Union, 775 Commonwealth Av, 5th floor, Boston, MA, 02215, USA
| | - Jacob A Beierle
- T32 Biomolecular Pharmacology PhD Program, Boston University Chobanian & Avedisian School of Medicine, USA; Boston University's Transformative Training Program in Addiction Science, Boston University Chobanian & Avedisian School of Medicine, 72 E. Concord St., L-317, Boston, MA, 02118, USA; Laboratory of Addiction Genetics, Department of Pharmacology, Physiology & Biophysics, Boston University Chobanian & Avedisian School of Medicine, 72 E. Concord St., L-606, Boston, MA, 02118, USA; Department of Pharmaceutical Sciences, Center for Drug Discovery, Northeastern University, 360 Huntington Av, 140 The Fenway Building, X138, Boston, MA, 02115, USA
| | - Michelle A Roos
- Laboratory of Addiction Genetics, Department of Pharmacology, Physiology & Biophysics, Boston University Chobanian & Avedisian School of Medicine, 72 E. Concord St., L-606, Boston, MA, 02118, USA; Department of Pharmaceutical Sciences, Center for Drug Discovery, Northeastern University, 360 Huntington Av, 140 The Fenway Building, X138, Boston, MA, 02115, USA
| | - Huiping Zhang
- Department of Psychiatry, Boston University Chobanian and Avedisian School of Medicine, 72 E. Concord St., Boston, MA, 02118, USA
| | - Elisha M Wachman
- Department of Pediatrics, Boston University Chobanian and Avedisian School of Medicine and Boston Medical Center, 1 Boston Medical Center Pl, Boston, MA, 02118, USA
| | - Camron D Bryant
- Laboratory of Addiction Genetics, Department of Pharmacology, Physiology & Biophysics, Boston University Chobanian & Avedisian School of Medicine, 72 E. Concord St., L-606, Boston, MA, 02118, USA; Department of Pharmaceutical Sciences, Center for Drug Discovery, Northeastern University, 360 Huntington Av, 140 The Fenway Building, X138, Boston, MA, 02115, USA.
| |
Collapse
|
5
|
Babaei F, Kourosh-Arami M, Farhadi M. NMDA Receptors in the Rat Paraventricular Thalamic Nucleus Reduce the Naloxone-induced Morphine Withdrawal. Cent Nerv Syst Agents Med Chem 2023; 23:119-125. [PMID: 37587828 DOI: 10.2174/1871524923666230816103223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2023] [Revised: 06/05/2023] [Accepted: 07/05/2023] [Indexed: 08/18/2023]
Abstract
BACKGROUND NMDA receptors have a significant role in the development of opioid physical dependence. Evidence demonstrated that a drug of abuse enhances neuronal excitability in the Paraventricular Nucleus (PVT). The current research studied whether blocking NMDA receptors through the administration of MK801 in the PVT nucleus could affect the development of Morphine (Mor) dependence and hence the behavioral indices induced by morphine withdrawal in rats. METHODS Male Wistar rats weighing 250-300 g were used. For induction of drug dependence, we injected Mor subcutaneously (s.c.) (6, 16, 26, 36, 46, 56, and 66 mg/kg, 2 ml/kg) at an interval of 24 hours for 7 days. Animals were divided into two groups in which the NMDA receptor antagonist, MK801 (20 mM in 0.1 ml), or its vehicle were applied into the PVT nucleus for 7 days before each Mor administration. On day 8, after injection of naloxone (Nal, 2.5 mg/kg, i.p.), withdrawal behaviors were checked for 25 min. RESULTS The current results demonstrated that the blockade of the NMDA receptor in the PVT nucleus significantly increased withdrawal behaviors provoked by the application of Nal in morphinedependent (Mor-d) rats. CONCLUSION We concluded that the NMDA receptor in the PVT nucleus changes the development of Mor dependence.
Collapse
Affiliation(s)
- Fatemeh Babaei
- Department of Microbiology, Karaj Branch Islamic Azad University, Karaj, Iran
| | - Masoumeh Kourosh-Arami
- Department of Neuroscience, School of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Mona Farhadi
- Department of Microbiology, Karaj Branch Islamic Azad University, Karaj, Iran
| |
Collapse
|
6
|
Morgan MM, Ataras K. Sex differences in the impact of pain, morphine administration and morphine withdrawal on quality of life in rats. Pharmacol Biochem Behav 2022; 219:173451. [PMID: 35995262 DOI: 10.1016/j.pbb.2022.173451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 07/27/2022] [Accepted: 08/17/2022] [Indexed: 11/17/2022]
Abstract
The disruptive effects of pain on quality of life are greater in men than in women, but the disruptive effects of opioid administration and withdrawal tend to be greater in women. These sex differences in pain, acute opioid effects, and opioid withdrawal tend to be opposite to sex differences reported in laboratory rats. We hypothesized that sex differences in humans and rats would more closely align if animal research measured quality of life as opposed to traditional evoked behaviors of pain (e.g., nociceptive reflexes) and opioid withdrawal (e.g., wet dog shakes). The present study assessed quality of life in adult female and male rats by measuring voluntary wheel running in the rat's home cage. Hindpaw inflammation induced by administration of Complete Freund's Adjuvant (CFA) into the right hindpaw caused a greater depression of wheel running in male compared to female rats. Twice daily injections of high morphine doses (5-20 mg/kg) and the subsequent morphine withdrawal caused a greater depression of wheel running in female compared to male rats. These sex differences are consistent with human data that shows the impact of pain on quality of life is greater in men than women, but the negative effects of opioid administration and withdrawal are greater in women. The present data indicate that the clinical significance of animal research would be enhanced by shifting the endpoint from pain and opioid evoked behaviors to measures of quality of life such as voluntary wheel running.
Collapse
Affiliation(s)
- Michael M Morgan
- Department of Psychology, Washington State University Vancouver, 14204 NE Salmon Creek Ave., Vancouver, WA 98686, United States of America.
| | - Kristin Ataras
- Department of Psychology, Washington State University Vancouver, 14204 NE Salmon Creek Ave., Vancouver, WA 98686, United States of America.
| |
Collapse
|
7
|
Deng M, Zhang Z, Xing M, Liang X, Li Z, Wu J, Jiang S, Weng Y, Guo Q, Zou W. LncRNA MRAK159688 facilitates morphine tolerance by promoting REST-mediated inhibition of mu opioid receptor in rats. Neuropharmacology 2022; 206:108938. [PMID: 34982972 DOI: 10.1016/j.neuropharm.2021.108938] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 12/17/2021] [Accepted: 12/28/2021] [Indexed: 12/11/2022]
Abstract
Morphine tolerance (MT) caused by the long-term use of morphine is a major medical problem. The molecular mechanism of morphine tolerance remains elusive. Here, we established a morphine tolerance model in rats and verified whether the long noncoding RNA (lncRNA) MRAK159688 is involved in morphine tolerance and its specific molecular mechanism. We show the significant upregulation of MRAK159688 expression in the spinal cord of morphine-tolerant rats. Overexpression of MRAK159688 by a lentivirus reduces the analgesic efficacy of morphine and induces pain behavior. Downregulation of MRAK159688 using a small interfering RNA (siRNA) attenuates the formation of morphine tolerance, partially reverses the development of morphine tolerance and alleviates morphine-induced hyperalgesia. MRAK159688 is located in the nucleus and cytoplasm of neurons, and it colocalizes with repressor element-1 silencing transcription factor (REST) in the nucleus. MRAK159688 potentiates the expression and function of REST, thereby inhibiting the expression of mu opioid receptor (MOR) and subsequently inducing morphine tolerance. Moreover, REST overexpression blocks the effects of MRAK159688 siRNA on relieving morphine tolerance. In general, chronic morphine administration-mediated upregulation of MRAK159688 in the spinal cord contributes to morphine tolerance and hyperalgesia by promoting REST-mediated inhibition of MOR. MRAK159688 downregulation may represent a novel RNA-based therapy for morphine tolerance.
Collapse
Affiliation(s)
- Meiling Deng
- Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China
| | - Zengli Zhang
- Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China; Department of Anesthesiology, Tianjin Medical University Cancer Institute & Hospital, Tianjin, 300000, China
| | - Manyu Xing
- Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China
| | - Xia Liang
- Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China; Department of Anesthesiology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, 510120, Guangdong, China
| | - Zhengyiqi Li
- Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China
| | - Jing Wu
- Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China
| | - Shasha Jiang
- Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China
| | - Yingqi Weng
- Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China
| | - Qulian Guo
- Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China
| | - Wangyuan Zou
- Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China.
| |
Collapse
|
8
|
Abstract
This comprehensive review on opioids summarizes the scope of the current opioid epidemic, the diagnosis and treatment of opioid use disorder, and the medical and psychiatric complications of opioid use.
Collapse
Affiliation(s)
- Alyssa Peterkin
- Grayken Center for Addiction Medicine, Section of General Internal Medicine, Department of Medicine, Boston University School of Medicine, Boston Medical Center, 801 Massachusetts Avenue, Room 2070, Boston, MA 02118, USA.
| | - Jordana Laks
- Grayken Center for Addiction Medicine, Section of General Internal Medicine, Department of Medicine, Boston University School of Medicine, Boston Medical Center, 801 Massachusetts Avenue, Room 2103B, Boston, MA 02118, USA
| | - Zoe M Weinstein
- Grayken Center for Addiction Medicine, Section of General Internal Medicine, Department of Medicine, Boston University School of Medicine, Boston Medical Center, 801 Massachusetts Avenue, Room 2039, Boston, MA 02118, USA
| |
Collapse
|
9
|
Stickney JD, Morgan MM. Comparative benefits of social housing and buprenorphine on wheel running depressed by morphine withdrawal in rats. Psychopharmacology (Berl) 2021; 238:2895-2903. [PMID: 34247265 DOI: 10.1007/s00213-021-05906-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Accepted: 06/14/2021] [Indexed: 01/01/2023]
Abstract
RATIONALE Social support and opioid replacement therapy are commonly used to treat opioid withdrawal. OBJECTIVE The present study tested the hypothesis that social housing and buprenorphine administration can restore wheel running depressed by morphine withdrawal in rats. RESULTS Experiment 1 assessed disruptive side effects of buprenorphine and found that administration of low doses (3.2, 10, & 32 µg/kg, s.c.) had no impact on voluntary wheel running. Experiment 2 assessed the impact of social housing and acute buprenorphine administration (10 µg/kg) on morphine withdrawal. Two 75 mg morphine pellets were implanted for 3 days to induce dependence. Removal of the morphine pellets caused a decrease in body weight, increase in wet dog shakes, and depression of wheel running during the normally active dark phase of the circadian cycle. Social housing restored wheel running and reduced the number of wet dog shakes but did not affect body weight. Administration of buprenorphine restored wheel running depressed by morphine withdrawal for 2 days in individually housed rats and produced time-dependent changes in socially housed rats: Depression of wheel running in the 3 h following administration and restoration of running subsequently compared to saline-treated controls. CONCLUSIONS The impact of buprenorphine and social housing to reduce the effect of morphine withdrawal in rats is consistent with the use of opioid substitution therapy and psychotherapy/social support to treat opioid withdrawal in humans. These data provide further validation for the clinical relevance for the use of wheel running to assess spontaneous opioid withdrawal.
Collapse
Affiliation(s)
- Jonah D Stickney
- Department of Psychology, Washington State University Vancouver, 14204 NE Salmon Creek Ave, Vancouver, WA, 98686, USA
| | - Michael M Morgan
- Department of Psychology, Washington State University Vancouver, 14204 NE Salmon Creek Ave, Vancouver, WA, 98686, USA.
| |
Collapse
|
10
|
Varshneya NB, Walentiny DM, Moisa LT, Walker TD, Akinfiresoye LR, Beardsley PM. Fentanyl-related substances elicit antinociception and hyperlocomotion in mice via opioid receptors. Pharmacol Biochem Behav 2021; 208:173242. [PMID: 34302853 DOI: 10.1016/j.pbb.2021.173242] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 07/16/2021] [Accepted: 07/16/2021] [Indexed: 11/30/2022]
Abstract
Synthetic opioids have been implicated as the single greatest contributor to rising drug-related fatalities in recent years. This study evaluated mu-opioid receptor (MOR) mediated effects of seven fentanyl-related substances that have emerged in the recreational drug marketplace, and for which there are no existing or only limited in vivo data. Adult male Swiss Webster mice were administered fentanyl-related substances and their effects on nociception and locomotion as compared to MOR agonist standards were observed. In locomotor activity tests, morphine (100, 180 mg/kg), fentanyl (1, 10 mg/kg), beta-methylfentanyl (10 mg/kg), para-methoxyfentanyl (10 mg/kg), fentanyl carbamate (100 mg/kg), and 3-furanylfentanyl (10 mg/kg), elicited significant (p ≤ 0.05) dose-dependent increases in locomotion. However, para-methylfentanyl and beta'-phenylfentanyl did not produce significant effects on locomotion at doses up to 100 mg/kg and phenylfentanyl (100 mg/kg) significantly decreased locomotion. In warm-water tail-withdrawal tests, all substances produced significant dose-dependent increases in antinociception with increasing ED50 values (95% CI) of fentanyl [0.08 mg/kg (0.04-0.16)] > para-methoxyfentanyl [0.43 mg/kg (0.23-0.77)] > 3-furanylfentanyl [0.51 mg/kg (0.36-0.74)] > beta-methylfentanyl [0.74 mg/kg (0.64-0.85)] > para-methylfentanyl [1.92 mg/kg (1.48-2.45)] > fentanyl carbamate [5.59 mg/kg (4.11-7.54)] > morphine [7.82 mg/kg (5.42-11.0)] > beta'-phenylfentanyl [19.4 mg/kg (11.0-34.4)] > phenylfentanyl [55.2 mg/kg (33.5-93.0)]. Naltrexone (1 mg/kg) increased ED50 values several fold with decreasing magnitudes of para-methylfentanyl (63.1×) > para-methoxyfentanyl (22.5×) > beta'-phenylfentanyl (21.0×) > 3-furanylfentanyl (20.6×) > beta-methylfentanyl (19.2×) > phenylfentanyl (5.23×) > fentanyl (3.95×) > fentanyl carbamate (2.21×) > morphine (1.48×). These findings expand upon in vivo results from previous studies and establish that the effects of these fentanyl related-related substances are at least in part mediated by the MOR.
Collapse
Affiliation(s)
- Neil B Varshneya
- Behavioral Pharmacology Research Unit, Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA; Department of Pharmacology and Toxicology, Virginia Commonwealth University School of Medicine, Richmond, VA, USA.
| | - D Matthew Walentiny
- Department of Pharmacology and Toxicology, Virginia Commonwealth University School of Medicine, Richmond, VA, USA
| | - Lea T Moisa
- Department of Pharmacology and Toxicology, Virginia Commonwealth University School of Medicine, Richmond, VA, USA
| | - Teneille D Walker
- Diversion Control Division, Drug Enforcement Administration, United States Department of Justice, Springfield, VA, USA
| | - Luli R Akinfiresoye
- Diversion Control Division, Drug Enforcement Administration, United States Department of Justice, Springfield, VA, USA
| | - Patrick M Beardsley
- Department of Pharmacology and Toxicology, Virginia Commonwealth University School of Medicine, Richmond, VA, USA; Center for Biomarker Research & Precision Medicine, Virginia Commonwealth University School of Pharmacy, Richmond, VA, USA
| |
Collapse
|
11
|
Douton JE, Augusto C, Stoltzfus B, Carkaci-Salli N, Vrana KE, Grigson PS. Glucagon-like peptide-1 receptor agonist, exendin-4, reduces reinstatement of heroin-seeking behavior in rats. Behav Pharmacol 2021; 32:265-277. [PMID: 33229892 PMCID: PMC8119287 DOI: 10.1097/fbp.0000000000000609] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Opioid use disorder (OUD) causes the death of nearly 130 Americans daily. It is evident that new avenues for treatment are needed. To this end, studies have reported that 'satiety' agents such as the glucagon-like peptide-1 receptor (GLP-1R) agonist, exendin-4 (Ex-4), decreases responding for addictive drugs such as cocaine, nicotine, alcohol, and oxycodone, but no work has been done with heroin. In this study, we used a reward devaluation model in which rats avoid ingesting a saccharin solution that predicts drug availability to test the effects of 2.4 μg/kg Ex-4 on responding for a natural reward cue (i.e., saccharin) and on cue- and drug-induced heroin seeking. The results showed that treatment with Ex-4 during the 16-day abstinence period and on the test day decreased cue-induced heroin seeking. Drug-induced heroin seeking also was reduced by Ex-4, but only when using a 1 h, but not a 6 h, pretreatment time. Treatment with Ex-4 did not alter intake of the saccharin cue when the drug was on board, but a history of treatment with Ex-4 increased acceptance of the saccharin cue in later extinction trials. Finally, treatment with Ex-4 did not alter body weight, but was associated with increased Orexin 1 receptor (OX1) mRNA expression in the nucleus accumbens shell. Taken together, these findings are the first to show that treatment with a GLP-1R agonist can reduce both cue-induced seeking and drug-induced reinstatement of heroin seeking. As such, a GLP-1R agonist may serve as an effective treatment for OUD in humans.
Collapse
|
12
|
Amohashemi E, Reisi P, Alaei H. Lateral habenula electrical stimulation with different intensities in combination with GABA B receptor antagonist reduces acquisition and expression phases of morphine-induced CPP. Neurosci Lett 2021; 759:135996. [PMID: 34062194 DOI: 10.1016/j.neulet.2021.135996] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 05/21/2021] [Accepted: 05/25/2021] [Indexed: 12/12/2022]
Abstract
The lateral habenula (LHb) plays a principal role in response to aversive stimuli and negative emotional states. In this study, we have evaluated the effects of unilateral electrical stimulation (e-stim) of the LHb on morphine-conditioned place preference (CPP), before or after bilateral injections of Gamma-aminobutyric acid-B receptor (GABABR) antagonist, phaclofen, in male rats. Morphine (5 mg/kg; s.c.) induced a significant CPP, using a 5-day CPP paradigm. Intra-LHb microinjection of phaclofen or the LHb e-stim decreased only the acquisition of CPP. The 150 μA stimulation plus phaclofen significantly suppressed the expression phase but induced aversion in the acquisition of CPP, and an e-stim of 25 μA in combination with the antagonist, significantly prevented only the acquisition phase. The findings of this study confirm the possible role of GABABRs in the LHb on the acquisition and the expression of CPP. These results show that e-stim of LHb alone or plus phaclofen may change the GABA transmission, involving into CPP. Therefore, the GABAergic system, especially through GABABRs, may play a prominent role in the behavioral responses to morphine-induced CPP by LHb stimulation.
Collapse
Affiliation(s)
- Elahe Amohashemi
- Department of Physiology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Parham Reisi
- Department of Physiology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Hojjatallah Alaei
- Department of Physiology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran.
| |
Collapse
|
13
|
RayatSanati K, Jamali S, Hassanlou AA, Haghparast A. Blockade of orexin receptors in the hippocampal dentate gyrus reduced the extinction latency of morphine-induced place preference in male rats. Neurosci Lett 2021; 756:135946. [PMID: 33974952 DOI: 10.1016/j.neulet.2021.135946] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 04/05/2021] [Accepted: 05/05/2021] [Indexed: 11/17/2022]
Abstract
Relapse to drugs such as opioids is a major challenge in addiction therapy. It has been known that the orexinergic system has a significant role in mediating reward processing and addiction, as shown by the conditioned place preference (CPP). The dentate gyrus (DG) of the hippocampus receives orexinergic projections from the lateral hypothalamus that has been approved as a critical area arbitrating the maintenance of drug-seeking behavior following the extinction. The present study aimed to investigate the effects of intra-DG administration of the orexin-1 receptor (OX1R) and orexin-2 receptor (OX2R) antagonists on the extinction of morphine-induced CPP in male rats. Animals received different doses of SB334867 (as OX1R antagonist) or TCS OX2 29 (as OX2R antagonist) (0.5, 2.5, and 12.5 nM/0.5 μl DMSO 12 %) bilaterally into the DG during the extinction phase, after CPP had been induced by subcutaneous injection of morphine (5 mg/kg) during a 3-day conditioning phase. The conditioning scores were recorded during the test. The results demonstrated that intra-DG administration of the highest dose of OX1R antagonist (12.5 nM/0.5 μl DMSO 12 %) shortened the extinction latency of morphine-CPP compared to the DMSO group, while the OX2R antagonist did not significantly alter the latency. Findings imply that the blockade of OX1R, but not OX2R, within the DG facilitates the extinction of morphine-induced reward. In conclusion, the OX1R antagonist might be kept in mind as a convenient therapeutic factor in repressing drug-seeking behaviors in an optimum amount of treatment considering the low dose-treatments applied.
Collapse
Affiliation(s)
- Kimia RayatSanati
- Student Research Committee, Neuroscience Research Center, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Shole Jamali
- Neuroscience Research Center, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Amir Arash Hassanlou
- Neuroscience Research Center, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Abbas Haghparast
- Neuroscience Research Center, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| |
Collapse
|
14
|
Vassoler FM, Byrnes EM. Transgenerational effects on anxiety-like behavior following adolescent morphine exposure in female rats. Behav Brain Res 2021; 406:113239. [PMID: 33731277 DOI: 10.1016/j.bbr.2021.113239] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 02/24/2021] [Accepted: 03/10/2021] [Indexed: 01/15/2023]
Abstract
Global opioid use and misuse remains high, despite efforts to decrease rates of prescribing and diversion. Chronic exposure to opioids, particularly during critical periods of development, can lead to long-lasting effects, including effects that may extend to future generations. Using a rodent model, we have demonstrated significant transgenerational effects of female adolescent morphine exposure, despite the absence of in utero drug exposure. While these effects have been observed in both sexes, effects on anxiety-like behavior were only observed in F1 females. The current study was designed to examine both inter- and transgenerational effects of adolescent morphine exposure on anxiety-like behavior. Female Sprague Dawley rats were administered increasing doses of morphine (5-25 mg/kg s.c.) or saline for 10 days during adolescence (PND30-39). Adult diestrous female offspring (MORF1 or SALF1) and grand offspring (F2) were tested for anxiety-like behavior using the elevated plus maze (EPM). F1 females cross-fostered to donor mothers were also examined. The results show that MORF1 and MORF2 females spend significantly more time on the open arms of the EPM compared to SALF1 controls, an effect that persisted in cross-fostered females. Additional studies demonstrate that this effect is estrous cycle dependent, as decreased anxiety-like behavior was observed in diestrus, while increased anxiety-like behavior was observed in estrus. These behavioral effects were not associated with any differences in circulating corticosterone either at baseline or following EPM testing. Thus, female adolescent morphine exposure alters the regulation of anxiety-like behavior in an estrous-dependent manner and this effect persists in the F2 generation.
Collapse
Affiliation(s)
- Fair M Vassoler
- Department of Biomedical Sciences, Cummings School of Veterinary Medicine, Tufts University, 200 Westboro Road, North Grafton, MA, 01536, United States
| | - Elizabeth M Byrnes
- Department of Biomedical Sciences, Cummings School of Veterinary Medicine, Tufts University, 200 Westboro Road, North Grafton, MA, 01536, United States.
| |
Collapse
|
15
|
Alipio JB, Brockett AT, Fox ME, Tennyson SS, deBettencourt CA, El-Metwally D, Francis NA, Kanold PO, Lobo MK, Roesch MR, Keller A. Enduring consequences of perinatal fentanyl exposure in mice. Addict Biol 2021; 26:e12895. [PMID: 32187805 PMCID: PMC7897444 DOI: 10.1111/adb.12895] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 02/28/2020] [Accepted: 02/29/2020] [Indexed: 12/14/2022]
Abstract
Opioid use by pregnant women is an understudied consequence associated with the opioid epidemic, resulting in a rise in the incidence of neonatal opioid withdrawal syndrome (NOWS) and lifelong neurobehavioral deficits that result from perinatal opioid exposure. There are few preclinical models that accurately recapitulate human perinatal drug exposure and few focus on fentanyl, a potent synthetic opioid that is a leading driver of the opioid epidemic. To investigate the consequences of perinatal opioid exposure, we administered fentanyl to mouse dams in their drinking water throughout gestation and until litters were weaned at postnatal day (PD) 21. Fentanyl-exposed dams delivered smaller litters and had higher litter mortality rates compared with controls. Metrics of maternal care behavior were not affected by the treatment, nor were there differences in dams' weight or liquid consumption throughout gestation and 21 days postpartum. Twenty-four hours after weaning and drug cessation, perinatal fentanyl-exposed mice exhibited signs of spontaneous somatic withdrawal behavior and sex-specific weight fluctuations that normalized in adulthood. At adolescence (PD 35), they displayed elevated anxiety-like behaviors and decreased grooming, assayed in the elevated plus maze and sucrose splash tests. Finally, by adulthood (PD 55), they displayed impaired performance in a two-tone auditory discrimination task. Collectively, our findings suggest that perinatal fentanyl-exposed mice exhibit somatic withdrawal behavior and change into early adulthood reminiscent of humans born with NOWS.
Collapse
Affiliation(s)
- Jason B. Alipio
- Department of Anatomy & Neurobiology, Program in Neuroscience, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Adam T. Brockett
- Department of Psychology, University of Maryland, College Park, MD, USA
- Program in Neuroscience and Cognitive Science, University of Maryland, College Park, MD, USA
| | - Megan E. Fox
- Department of Anatomy & Neurobiology, Program in Neuroscience, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Stephen S. Tennyson
- Department of Psychology, University of Maryland, College Park, MD, USA
- Program in Neuroscience and Cognitive Science, University of Maryland, College Park, MD, USA
| | | | - Dina El-Metwally
- Department of Pediatrics, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Nikolas A. Francis
- Department of Biology, University of Maryland, College Park, MD, USA
- Institute for Systems Research, A. James Clark School of Engineering, University of Maryland, College Park, MD, USA
| | - Patrick O. Kanold
- Department of Biology, University of Maryland, College Park, MD, USA
- Institute for Systems Research, A. James Clark School of Engineering, University of Maryland, College Park, MD, USA
| | - Mary Kay Lobo
- Department of Anatomy & Neurobiology, Program in Neuroscience, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Matthew R. Roesch
- Department of Psychology, University of Maryland, College Park, MD, USA
- Program in Neuroscience and Cognitive Science, University of Maryland, College Park, MD, USA
| | - Asaf Keller
- Department of Anatomy & Neurobiology, Program in Neuroscience, University of Maryland School of Medicine, Baltimore, MD, USA
| |
Collapse
|
16
|
Kranzler HR, Lynch KG, Crist RC, Hartwell E, Le Moigne A, Laffont CM, Andorn AC. A Delta-Opioid Receptor Gene Polymorphism Moderates the Therapeutic Response to Extended-Release Buprenorphine in Opioid Use Disorder. Int J Neuropsychopharmacol 2021; 24:89-96. [PMID: 32920647 PMCID: PMC7883889 DOI: 10.1093/ijnp/pyaa069] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 08/24/2020] [Accepted: 09/07/2020] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Buprenorphine treatment is not equally effective in all patients with opioid use disorder (OUD). Two retrospective studies showed that, among African Americans (AAs), rs678849, a polymorphism in the delta-opioid receptor gene, moderated the therapeutic effect of sublingual buprenorphine. METHODS We examined rs678849 as a moderator of the response to an extended-release subcutaneous buprenorphine formulation (BUP-XR) in a 24-week OUD treatment study of 127 AAs and 327 European Americans (EAs). Participants were randomly assigned to receive: (1) BUP-XR as 2 monthly injections of 300 mg followed by either 300 mg monthly or 100 mg monthly for 4 months, or (2) monthly volume-matched placebo injections. Generalized estimating equations logistic regression analyses tested, per population group, the main and interaction effects of treatment (BUP-XR vs placebo) and genotype group (rs678849*CC vs CT/TT) on weekly urine drug screens (UDS). RESULTS Among AAs, the placebo group had higher rates of opioid-positive UDS than the BUP-XR group (log odds ratio = 1.67, 95% CI = 0.36, 2.98), but no genotype by treatment effect (P = .80). Among EAs, the placebo group also showed higher rates of opioid-positive UDS than the BUP-XR group (log odds ratio = 1.97, 95% CI = 1.14, 2.79) but a significant genotype by treatment interaction (χ 2(1) = 4.33, P = .04). CONCLUSION We found a moderating effect of rs678849 on the response to buprenorphine treatment of OUD in EAs, but not AAs. These findings require replication in well-powered, prospective studies of both AA and EA OUD patients treated with BUP-XR and stratified on rs678849 genotype.
Collapse
Affiliation(s)
- Henry R Kranzler
- Mental Illness Research, Education and Clinical Center of the Veterans Integrated Service Network 4, Crescenz Veterans Affairs Medical Center, Philadelphia, Pennsylvania
| | - Kevin G Lynch
- Center for Studies of Addiction, Department of Psychiatry, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
- Mental Illness Research, Education and Clinical Center of the Veterans Integrated Service Network 4, Crescenz Veterans Affairs Medical Center, Philadelphia, Pennsylvania
| | - Richard C Crist
- Center for Neurobiology and Behavior, Department of Psychiatry, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
| | - Emily Hartwell
- Center for Studies of Addiction, Department of Psychiatry, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
- Mental Illness Research, Education and Clinical Center of the Veterans Integrated Service Network 4, Crescenz Veterans Affairs Medical Center, Philadelphia, Pennsylvania
| | | | | | | |
Collapse
|
17
|
Masrouri H, Azadi M, Semnanian S, Azizi H. Early life maternal deprivation attenuates morphine induced inhibition in lateral paragigantocellularis neurons in adult rats. Brain Res Bull 2021; 169:128-135. [PMID: 33482287 DOI: 10.1016/j.brainresbull.2021.01.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 12/29/2020] [Accepted: 01/15/2021] [Indexed: 02/04/2023]
Abstract
Early life stress can serve as one of the principle sources leading to individual differences in confronting challenges throughout the lifetime. Maternal deprivation (MD), a model of early life stress, can cause persistent alterations in brain function, and it may constitute a risk factor for later incidence of drug addiction. It is becoming more apparent that early life MD predisposes opiate abuse in adulthood. Although several behavioral and molecular studies have addressed this issue, changes in electrophysiological features of the neurons are yet to be understood. The lateral paragigantocellularis (LPGi) nucleus, which participates in the mediation of opiate dependence and withdrawal, may be susceptible to modifications following MD. This study sought to find whether early life MD can alter the discharge activity of LPGi neurons and their response to acute morphine administration in adult rats. Male Wistar rats experienced MD on postnatal days (PNDs) 1-14 for three h per day. Afterward, they were left undisturbed until PND 70, during which the extracellular activities of LPGi neurons were recorded in anesthetized animals at baseline and in response to acute morphine. In both MD and control groups, acute morphine administration induced heterogeneous (excitatory, inhibitory, and no effect) responses in LPGi neurons. At baseline recording, the interspike interval variability of the LPGi neurons was attenuated in both inhibitory and excitatory responses in animals with the history of MD. The extent of morphine-induced discharge inhibition was also lower in deprived animals compared to the control group. These findings suggest that early life MD induces long-term alterations in LPGi neuronal activity in response to acute administration of morphine. Therefore, the MD may alter the vulnerability to develop opiate abuse in adulthood.
Collapse
Affiliation(s)
- Hossein Masrouri
- Department of Physiology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Maryam Azadi
- Department of Physiology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Saeed Semnanian
- Department of Physiology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Hossein Azizi
- Department of Physiology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran.
| |
Collapse
|
18
|
Lobina C, Maccioni P, Lorrai I, Zaru A, Collu M, Carai MAM, Brizzi A, Mugnaini C, Gessa GL, Corelli F, Colombo G. Suppressing effect of the novel positive allosteric modulator of the GABA B receptor, COR659, on locomotor hyperactivity induced by different drugs of abuse. Behav Brain Res 2020; 400:113045. [PMID: 33309750 DOI: 10.1016/j.bbr.2020.113045] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 11/10/2020] [Accepted: 11/23/2020] [Indexed: 01/08/2023]
Abstract
COR659 is a recently synthesized positive allosteric modulator (PAM) of the GABAB receptor. Similarly to all GABAB PAMs tested to date, COR659 has been reported to suppress different alcohol-related behaviors in rodents. The present study was designed to assess whether the anti-addictive properties of COR659 extend to drugs of abuse other than alcohol. Specifically, it investigated the effect of COR659 on cocaine-, amphetamine-, nicotine-, and morphine-induced locomotor hyperactivity in mice. To this aim, independent groups of CD1 mice were acutely pretreated with COR659 (0, 10, and 20 mg/kg; i.p.), then acutely treated with cocaine (0 and 10 mg/kg, s.c.), amphetamine (0 and 5 mg/kg; s.c.), nicotine (0 and 0.05 mg/kg; s.c.), or morphine (0 and 20 mg/kg; s.c.), and finally exposed for 60 min to a photocell-equipped motility cage. When given alone, both doses of COR659 were ineffective on spontaneous locomotor activity. Pretreatment with COR659 reduced, or even suppressed, the increase in motility counts induced by cocaine, amphetamine, nicotine, and morphine. Since locomotor hyperactivity is an attribute common to drugs of abuse, the results of the present study constitute the first line of evidence on the extension of the preclinical, anti-addictive profile of COR659 to cocaine, amphetamine, nicotine, and morphine.
Collapse
Affiliation(s)
- Carla Lobina
- Neuroscience Institute, Section of Cagliari, National Research Council of Italy, Monserrato, CA, I-09042, Italy
| | - Paola Maccioni
- Neuroscience Institute, Section of Cagliari, National Research Council of Italy, Monserrato, CA, I-09042, Italy
| | - Irene Lorrai
- Neuroscience Institute, Section of Cagliari, National Research Council of Italy, Monserrato, CA, I-09042, Italy; Department of Biomedical Sciences, University of Cagliari, Monserrato, CA, I-09042, Italy
| | - Alessandro Zaru
- Neuroscience Institute, Section of Cagliari, National Research Council of Italy, Monserrato, CA, I-09042, Italy; Department of Biomedical Sciences, University of Cagliari, Monserrato, CA, I-09042, Italy
| | - Maria Collu
- Department of Biomedical Sciences, University of Cagliari, Monserrato, CA, I-09042, Italy
| | - Mauro A M Carai
- Cagliari Pharmacological Research, Cagliari, CA, I-09127, Italy
| | - Antonella Brizzi
- Department of Biotechnology, Chemistry, and Pharmacy, University of Siena, Siena, SI, I-53100, Italy
| | - Claudia Mugnaini
- Department of Biotechnology, Chemistry, and Pharmacy, University of Siena, Siena, SI, I-53100, Italy
| | - Gian Luigi Gessa
- Neuroscience Institute, Section of Cagliari, National Research Council of Italy, Monserrato, CA, I-09042, Italy; Department of Biomedical Sciences, University of Cagliari, Monserrato, CA, I-09042, Italy
| | - Federico Corelli
- Department of Biotechnology, Chemistry, and Pharmacy, University of Siena, Siena, SI, I-53100, Italy
| | - Giancarlo Colombo
- Neuroscience Institute, Section of Cagliari, National Research Council of Italy, Monserrato, CA, I-09042, Italy.
| |
Collapse
|
19
|
Gutierrez A, Nguyen JD, Creehan KM, Taffe MA. Female rats self-administer heroin by vapor inhalation. Pharmacol Biochem Behav 2020; 199:173061. [PMID: 33164848 PMCID: PMC7725943 DOI: 10.1016/j.pbb.2020.173061] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 10/14/2020] [Accepted: 10/15/2020] [Indexed: 12/23/2022]
Abstract
Over the last two decades the United States has experienced a significant increase in the medical and non-medical use of opioid drugs, resulting in record numbers of opioid-related overdoses and deaths. There was an initial increase in non-medical use of prescription opioids around 2002, followed later by increased heroin use and then most recently fentanyl. Inhalation is a common route of administration for opioids, with a documented history spanning back to Mediterranean antiquity and up through modern use with e-cigarette devices. Unfortunately, preclinical studies using inhalation as the route of administration remain relatively few. This study was conducted to determine the efficacy of e-cigarette vapor inhalation of heroin in rats. Non-contingent exposure to heroin or methadone vapor produced anti-nociceptive efficacy in male and female rats. Female rats were trained to self-administer heroin vapor; the most-preferring half of the distribution obtained more vapor reinforcers when the concentration of heroin was reduced in the vapor vehicle and when pre-treated with the opioid receptor antagonist naloxone. The anti-nociceptive effect of heroin self-administered by vapor was identical in magnitude to that produced by intravenous self-administration. Finally, anxiety-like behavior increased 24-48 h after last heroin vapor access, consistent with withdrawal signs observed after intravenous self-administration. In sum, these studies show that rewarding and anti-nociceptive effects of heroin are produced in rats by vapor inhalation using e-cigarette technology. Importantly, self-administration models by this route can be deployed to determine health effects of inhaled heroin or other opioids.
Collapse
Affiliation(s)
- Arnold Gutierrez
- Department of Neuroscience, The Scripps Research Institute, La Jolla, CA, USA; Department of Psychiatry, University of California, San Diego, La Jolla, CA, USA
| | - Jacques D Nguyen
- Department of Neuroscience, The Scripps Research Institute, La Jolla, CA, USA; Department of Psychiatry, University of California, San Diego, La Jolla, CA, USA
| | - Kevin M Creehan
- Department of Neuroscience, The Scripps Research Institute, La Jolla, CA, USA; Department of Psychiatry, University of California, San Diego, La Jolla, CA, USA
| | - Michael A Taffe
- Department of Neuroscience, The Scripps Research Institute, La Jolla, CA, USA; Department of Psychiatry, University of California, San Diego, La Jolla, CA, USA.
| |
Collapse
|
20
|
Galaj E, Han X, Shen H, Jordan CJ, He Y, Humburg B, Bi GH, Xi ZX. Dissecting the Role of GABA Neurons in the VTA versus SNr in Opioid Reward. J Neurosci 2020; 40:8853-8869. [PMID: 33046548 PMCID: PMC7659457 DOI: 10.1523/jneurosci.0988-20.2020] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Revised: 08/22/2020] [Accepted: 09/21/2020] [Indexed: 01/03/2023] Open
Abstract
Opioid reward has traditionally been thought to be mediated by GABA-induced disinhibition of dopamine (DA) neurons in the VTA. However, direct behavioral evidence supporting this hypothesis is still lacking. In this study, we found that the μ opioid receptor (MOR) gene, Oprm1, is highly expressed in GABA neurons, with ∼50% of GABA neurons in the substantia nigra pars reticulata (SNr), ∼30% in the VTA, and ∼70% in the tail of the VTA (also called the rostromedial tegmental nucleus) in male rats. No Oprm1 mRNA was detected in midbrain DA neurons. We then found that optogenetic inhibition of VTA DA neurons reduced intravenous heroin self-administration, whereas activation of these neurons produced robust optical intracranial self-stimulation in DAT-Cre mice, supporting an important role of DA neurons in opioid reward. Unexpectedly, pharmacological blockade of MORs in the SNr was more effective than in the VTA in reducing heroin reward. Optogenetic activation of VTA GABA neurons caused place aversion and inhibited cocaine, but not heroin, self-administration, whereas optogenetic activation of SNr GABA neurons caused a robust increase in heroin self-administration with an extinction pattern, suggesting a compensatory response in drug intake due to reduced heroin reward. In addition, activation of SNr GABA neurons attenuated heroin-primed, but not cue-induced, reinstatement of drug-seeking behavior, whereas inhibition of SNr GABA neurons produced optical intracranial self-stimulation and place preference. Together, these findings suggest that MORs on GABA neurons in the SNr play more important roles in opioid reward and relapse than MORs on VTA GABA neurons.SIGNIFICANCE STATEMENT Opioid reward has long been believed to be mediated by inhibition of GABA interneurons in the VTA that subsequently leads to disinhibition of DA neurons. In this study, we found that more μ opioid receptors (MORs) are expressed in GABA neurons in the neighboring SNr than in the VTA, and that pharmacological blockade of MORs in the SNr is more effective in reducing heroin reward than blockade of MORs in the VTA. Furthermore, optogenetic activation of VTA GABA neurons inhibited cocaine, but not heroin, self-administration, whereas activation of SNr GABA neurons inhibited heroin reward and relapse. These findings suggest that opioid reward is more likely mediated by stimulation of MORs in GABA afferents from other brain regions than in VTA GABA neurons.
Collapse
Affiliation(s)
- Ewa Galaj
- Addiction Biology Unit, Molecular Targets and Medications Discovery Branch, National Institute on Drug Abuse, Intramural Research Program, Baltimore, Maryland 21224
| | - Xiao Han
- Addiction Biology Unit, Molecular Targets and Medications Discovery Branch, National Institute on Drug Abuse, Intramural Research Program, Baltimore, Maryland 21224
| | - Hui Shen
- Synaptic Plasticity Section, National Institute on Drug Abuse, Intramural Research Program, Baltimore, Maryland 21224
| | - Chloe J Jordan
- Addiction Biology Unit, Molecular Targets and Medications Discovery Branch, National Institute on Drug Abuse, Intramural Research Program, Baltimore, Maryland 21224
| | - Yi He
- Addiction Biology Unit, Molecular Targets and Medications Discovery Branch, National Institute on Drug Abuse, Intramural Research Program, Baltimore, Maryland 21224
| | - Bree Humburg
- Addiction Biology Unit, Molecular Targets and Medications Discovery Branch, National Institute on Drug Abuse, Intramural Research Program, Baltimore, Maryland 21224
| | - Guo-Hua Bi
- Addiction Biology Unit, Molecular Targets and Medications Discovery Branch, National Institute on Drug Abuse, Intramural Research Program, Baltimore, Maryland 21224
| | - Zheng-Xiong Xi
- Addiction Biology Unit, Molecular Targets and Medications Discovery Branch, National Institute on Drug Abuse, Intramural Research Program, Baltimore, Maryland 21224
| |
Collapse
|
21
|
Wolter M, Huff AE, Baidoo N, Jardine KH, Pulles Z, Winters BD, Leri F. Modulation of object memory consolidation by heroin and heroin-conditioned stimuli: Role of opioid and noradrenergic systems. Eur Neuropsychopharmacol 2020; 33:146-157. [PMID: 32067860 DOI: 10.1016/j.euroneuro.2020.01.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Revised: 12/21/2019] [Accepted: 01/22/2020] [Indexed: 11/18/2022]
Abstract
There is recent evidence that cocaine, nicotine, and their conditioned stimuli have the ability to enhance memory consolidation. The present study compared the effects of post-training heroin and of a heroin contextual conditioned stimulus (CS+) on consolidation of object recognition memory and investigated the roles of opioid and beta-adrenergic receptors in heroin/CS+ memory modulation by co-administering the respective antagonists, naltrexone (NTX) and propranolol (PRO). Three experiments were performed in male Sprague-Dawley rats demonstrating that immediate, but not delayed, post-sample exposure to heroin (0.3, 1 mg/kg), or exposure (30 min) to a contextual CS+ paired with 1 mg/kg heroin (5 pairings, each 120 min), equally enhanced object memory. Importantly, while the memory enhancing effects of 1 mg/kg heroin and of the contextual CS+ were not altered by post-training co-administration of 3 mg/kg naltrexone, they were blocked by post-training co-administration of 10 mg/kg propranolol. Taken together, these data suggest that a context paired with heroin shares the memory enhancing effect of heroin itself and that these unconditioned and conditioned drug stimuli may modulate memory through the activation of beta-noradrenergic receptors.
Collapse
Affiliation(s)
- Michael Wolter
- Department of Psychology & Collaborative Neuroscience Program, University of Guelph, 50 Stone Road East, N1G 2W1 Guelph, ON, Canada
| | - Andrew E Huff
- Department of Psychology & Collaborative Neuroscience Program, University of Guelph, 50 Stone Road East, N1G 2W1 Guelph, ON, Canada
| | - Nana Baidoo
- Department of Psychology & Collaborative Neuroscience Program, University of Guelph, 50 Stone Road East, N1G 2W1 Guelph, ON, Canada
| | - Kristen H Jardine
- Department of Psychology & Collaborative Neuroscience Program, University of Guelph, 50 Stone Road East, N1G 2W1 Guelph, ON, Canada
| | - Zoey Pulles
- Department of Psychology & Collaborative Neuroscience Program, University of Guelph, 50 Stone Road East, N1G 2W1 Guelph, ON, Canada
| | - Boyer D Winters
- Department of Psychology & Collaborative Neuroscience Program, University of Guelph, 50 Stone Road East, N1G 2W1 Guelph, ON, Canada
| | - Francesco Leri
- Department of Psychology & Collaborative Neuroscience Program, University of Guelph, 50 Stone Road East, N1G 2W1 Guelph, ON, Canada.
| |
Collapse
|
22
|
Czynski AJ, Davis JM, Dansereau LM, Engelhardt B, Marro P, Bogen DL, Hudak ML, Shenberger J, Wachman EM, Oliveira EL, Lester BM. Neurodevelopmental Outcomes of Neonates Randomized to Morphine or Methadone for Treatment of Neonatal Abstinence Syndrome. J Pediatr 2020; 219:146-151.e1. [PMID: 31987653 PMCID: PMC7161698 DOI: 10.1016/j.jpeds.2019.12.018] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 11/27/2019] [Accepted: 12/11/2019] [Indexed: 01/12/2023]
Abstract
OBJECTIVE To evaluate the effects of pharmacologic treatment of neonatal abstinence syndrome on neurodevelopmental outcome from a randomized, controlled trial. STUDY DESIGN Eight sites enrolled 116 full-term newborn infants with neonatal abstinence syndrome born to mothers maintained on methadone or buprenorphine into a randomized trial of morphine vs methadone. Ninety-nine infants (85%) were evaluated at hospital discharge using the NICU Network Neurobehavioral Scale. At 18 months, 83 of 99 infants (83.8%) were evaluated with the Bayley Scales of Infant and Toddler Development-Third Edition and 77 of 99 (77.7%) with the Child Behavior Checklist (CBCL). RESULTS Primary analyses showed no significant differences between treatment groups on the NICU Network Neurobehavioral Scale, Bayley Scales of Infant and Toddler Development-Third Edition, or CBCL. However in post hoc analyses, we found differences by atypical NICU Network Neurobehavioral Scale profile on the CBCL. Infants receiving adjunctive phenobarbital had lower Bayley Scales of Infant and Toddler Development-Third Edition scores and more behavior problems on the CBCL. In adjusted analyses, internalizing and total behavior problems were associated with use of phenobarbital (P = .03; P = .04), maternal psychological distress (measured by the Brief Symptom Inventory) (both P < .01), and infant medical problems (both P = .02). Externalizing problems were associated with maternal psychological distress (P < .01) and continued maternal substance use (P < .01). CONCLUSIONS Infants treated with either morphine or methadone had similar short-term and longer term neurobehavioral outcomes. Neurodevelopmental outcome may be related to the need for phenobarbital, overall health of the infant, and postnatal caregiving environment. TRIAL REGISTRATION ClinicalTrials.gov: NCT01958476.
Collapse
Affiliation(s)
- Adam J Czynski
- Department of Pediatrics, Warren Alpert Medical School of Brown University and Women and Infants Hospital, Providence, RI.
| | - Jonathan M Davis
- Department of Pediatrics, The Floating Hospital for Children at Tufts Medical Center, Boston, MA; Tufts Clinical and Translational Science Institute, Boston, MA; The Institute for Clinical Research and Health Policy Studies, Tufts Medical Center, Boston, MA
| | - Lynne M Dansereau
- Brown Center for the Study of Children at Risk and Women and Infants Hospital, Providence, RI
| | - Barbara Engelhardt
- Department of Pediatrics, Monroe Carell Jr Children's Hospital at Vanderbilt, Nashville, TN
| | - Peter Marro
- Department of Pediatrics, Maine Medical Center, Portland, ME
| | - Debra L Bogen
- Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - Mark L Hudak
- Department of Pediatrics, Jacksonville-University of Florida Health, Jacksonville, FL
| | | | | | - Erica L Oliveira
- Brown Center for the Study of Children at Risk and Women and Infants Hospital, Providence, RI
| | - Barry M Lester
- Department of Pediatrics, Warren Alpert Medical School of Brown University and Women and Infants Hospital, Providence, RI; Brown Center for the Study of Children at Risk and Women and Infants Hospital, Providence, RI
| |
Collapse
|
23
|
Keramatian A, Alaei H, Eidi A, Radahmadi M. Electrical stimulation mPFC affects morphine addiction by changing glutamate concentration in the ventral tegmental area. Metab Brain Dis 2019; 34:1171-1180. [PMID: 31115726 DOI: 10.1007/s11011-019-00426-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Accepted: 04/28/2019] [Indexed: 11/26/2022]
Abstract
Morphine addiction is known as a serious social problem. Medial prefrontal cortex (mPFC) and ventral tegmental area (VTA) are two important sites of the brain that contribute to this type of addiction, and a complicated relation exists in between. In addition, neurotransmitters like glutamate and γ--Amino Butyric Acid (GABA) play an important role in the formation of these relations. Thus, the present study was undertaken to investigate these relations by evaluating the level of associated changes in the indicated neurotransmitters in the VTA, using HPLC method. This was performed after electrical stimulation and inducing lesion of mPFC and through microinjections of N-Methyl-D-Aspartate (NMDA) and α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) receptor antagonists, respectively AP5 and CNQX, into the VTA of addicted rats. Our results showed that intra-peritoneal (i.p.) administration of morphine in 9 days in the morphine group, and also electrical stimulation (100 μA) of mPFC, receiving (i.p.) morphine, caused an increase in the glutamate release in the VTA, compared to the control group, but the increase of glutamate levels in the VTA in the morphine-stimulation group was not significant, compared to the morphine group. Moreover, GABA release into this area was decreasing in morphine and morphine- stimulation groups, compared to the control group. Our findings also showed that electrical lesion (0.4 mA) of mPFC, and also microinjection of glutamate antagonists into the VTA, receiving (i.p.) morphine in rats, caused a decrease of glutamate in the VTA. Therefore, it could be concluded that the relation between mPFC and VTA is highly effective in the formation of reward system.
Collapse
Affiliation(s)
- Asal Keramatian
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Hojjatallah Alaei
- Department of Physiology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran.
| | - Akram Eidi
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Maryam Radahmadi
- Department of Physiology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| |
Collapse
|
24
|
Amini K, Zhaleh H, Tahvilian R, Farnia V. Low concentration of morphine protects against cell death, oxidative stress and calcium accumulation by nicotine in PC12 cells. ACTA ACUST UNITED AC 2019; 120:256-262. [PMID: 31023047 DOI: 10.4149/bll_2019_042] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
OBJECTIVE Nicotine causes cell death in many cell lines. Morphine at low concentrations has protective effects against cell death. We investigated the effects of low concentration of morphine on nicotine-induced cell death in PC12 cells. MATERIALS AND METHODS PC12 are cells that grow in DMEM culture medium. Cell viability was detected by MTT test and cells cytotoxicity was measured by LDH test. The activity of caspase-3 was diagnosed by the caspase activity colorimetric assay kit, and detection of mitochondrial membrane potential was confirmed by rhodamine 123 and TUNEL test was performed for DNA fragmentation detection. The fura-2 AM and also rhod 2-AM was used for measurement of intracellular calcium (Ca2+) ic and mitochondrial calcium (Ca2+) m and finally, measurement of antioxidant enzyme activities was assessed. RESULTS The low concentration of morphine increased cell viability and suppressed cell cytotoxicity, cell death and the formation of mitochondrial membrane potential compared to nicotine treated cells. It also reduced the intracellular calcium (Ca2+) ic and mitochondrial calcium (Ca2+)m concentration, respectively. CONCLUSION Morphine as a pain reducer drug, in low concentrations, can protect PC12 cells from nicotine-induced cell death (Fig. 7, Ref. 59).
Collapse
|
25
|
Walentiny DM, Moisa LT, Beardsley PM. Oxycodone-like discriminative stimulus effects of fentanyl-related emerging drugs of abuse in mice. Neuropharmacology 2019; 150:210-216. [PMID: 30735691 DOI: 10.1016/j.neuropharm.2019.02.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Revised: 01/15/2019] [Accepted: 02/04/2019] [Indexed: 01/04/2023]
Abstract
BACKGROUND Fentanyl and its structurally related compounds have emerged as the most significant contributors to opioid overdose fatalities in recent years. While there is abundant information about the pharmacological effects of fentanyl, far less is known of its more recently abused analogs. The objective of this study was to determine whether fentanyl and several fentanyl-related substances would engender oxycodone-like responding in a mouse model of oxycodone discrimination. Oxycodone was selected as the training drug due to its high selectivity for mu opioid receptors. Compounds that elicited oxycodone-like responding in this procedure would likely evoke overlapping subjective experiences. METHODS Adult male C57BL/6 mice were trained to discriminate 1.3 mg/kg oxycodone from vehicle in a food-reinforced, two-lever choice procedure. Generalization tests were conducted with fentanyl and the following fentanyl-related compounds: ocfentanil, 3-furanyl fentanyl, crotonylfentanyl, and valerylfentanyl. RESULTS Fentanyl and each of its analogs completely generalized to the 1.3 mg/kg oxycodone discriminative stimulus and naltrexone pretreatment significantly decreased oxycodone-like responding for each compound. Rank order potency for engendering oxycodone-appropriate responding was ocfentanil > fentanyl > 3-furanyl fentanyl ≈ crotonylfentanyl > oxycodone > valerylfentanyl. Drug doses that evoked full substitution also significantly suppressed response rates compared to vehicle. CONCLUSIONS These results indicate that the discriminative stimulus, and by extension, the interoceptive and subjective effects of the tested fentanyl analogs, overlap with those of oxycodone. These observations consequentially support the prediction that they would also engender the likelihood for abuse similar to oxycodone. This article is part of the Special Issue entitled 'Opioid Neuropharmacology: Advances in treating pain and opioid addiction'.
Collapse
Affiliation(s)
- D Matthew Walentiny
- Department of Pharmacology & Toxicology, Virginia Commonwealth University, 1217 E. Marshall Street, Richmond, VA, 23298-0613, USA.
| | - Léa T Moisa
- Department of Pharmacology & Toxicology, Virginia Commonwealth University, 1217 E. Marshall Street, Richmond, VA, 23298-0613, USA
| | - Patrick M Beardsley
- Department of Pharmacology & Toxicology, Virginia Commonwealth University, 1217 E. Marshall Street, Richmond, VA, 23298-0613, USA; Institute for Drug and Alcohol Studies & Center for Biomarker Research and Personalized Medicine, Virginia Commonwealth University, 410 N. 12th Street, PO Box 980613, Richmond, VA, 23298-0613, USA
| |
Collapse
|
26
|
Rivera PD, Hanamsagar R, Kan MJ, Tran PK, Stewart D, Jo YC, Gunn M, Bilbo SD. Removal of microglial-specific MyD88 signaling alters dentate gyrus doublecortin and enhances opioid addiction-like behaviors. Brain Behav Immun 2019; 76:104-115. [PMID: 30447281 PMCID: PMC6348129 DOI: 10.1016/j.bbi.2018.11.010] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Revised: 11/09/2018] [Accepted: 11/13/2018] [Indexed: 12/15/2022] Open
Abstract
Drugs of abuse promote a potent immune response in central nervous system (CNS) via the activation of microglia and astrocytes. However, the molecular mechanisms underlying microglial activation during addiction are not well known. We developed and functionally characterized a novel transgenic mouse (Cx3cr1-CreBTtg/0:MyD88f/f [Cretg/0]) wherein the immune signaling adaptor gene, MyD88, was specifically deleted in microglia. To test the downstream effects of loss of microglia-specific MyD88 signaling in morphine addiction, Cretg/0 and Cre0/0 mice were tested for reward learning, extinction, and reinstatement using a conditioned place preference (CPP) paradigm. There were no differences in drug acquisition, but Cretg/0 mice had prolonged extinction and enhanced reinstatement compared to Cre0/0 controls. Furthermore, morphine-treated Cretg/0 mice showed increased doublecortin (DCX) signal relative to Cre0/0 control mice in the hippocampus, indicative of increased number of immature neurons. Additionally, there was an increase in colocalization of microglial lysosomal marker CD68 with DCX+cells in morphine-treated Cretg/0 mice but not in Cre0/0 or drug-naїve mice, suggesting a specific role for microglial MyD88 signaling in neuronal phagocytosis in the hippocampus. Our results show that MyD88 deletion in microglia may negatively impact maturing neurons within the adult hippocampus and thus reward memories, suggesting a novel protective role for microglia in opioid addiction.
Collapse
Affiliation(s)
- Phillip D Rivera
- Program in Neuroscience, Harvard Medical School, Boston, MA, USA; Department of Pediatrics, Lurie Center for Autism, MassGeneral Hospital for Children, Boston, MA, USA; Department of Psychology & Neuroscience, Duke University, Durham, NC, USA; Department of Biology, Hope College, Holland, MI, USA
| | - Richa Hanamsagar
- Program in Neuroscience, Harvard Medical School, Boston, MA, USA; Department of Pediatrics, Lurie Center for Autism, MassGeneral Hospital for Children, Boston, MA, USA; Department of Psychology & Neuroscience, Duke University, Durham, NC, USA
| | - Matthew J Kan
- Department of Immunology, Duke University Medical Center, Durham, NC, USA; Department of Medicine, Duke University Medical Center, Durham, NC, USA; Department of Pediatrics, University of California, San Francisco, CA, USA
| | - Phuong K Tran
- Department of Pediatrics, Lurie Center for Autism, MassGeneral Hospital for Children, Boston, MA, USA; Department of Psychology & Neuroscience, Duke University, Durham, NC, USA
| | - David Stewart
- Department of Psychology & Neuroscience, Duke University, Durham, NC, USA
| | - Young Chan Jo
- Program in Neuroscience, Harvard Medical School, Boston, MA, USA; Department of Pediatrics, Lurie Center for Autism, MassGeneral Hospital for Children, Boston, MA, USA
| | - Michael Gunn
- Department of Immunology, Duke University Medical Center, Durham, NC, USA; Department of Medicine, Duke University Medical Center, Durham, NC, USA
| | - Staci D Bilbo
- Program in Neuroscience, Harvard Medical School, Boston, MA, USA; Department of Pediatrics, Lurie Center for Autism, MassGeneral Hospital for Children, Boston, MA, USA; Department of Psychology & Neuroscience, Duke University, Durham, NC, USA.
| |
Collapse
|
27
|
Tapia MA, Lee JR, Weise VN, Tamasi AM, Will MJ. Sex differences in hedonic and homeostatic aspects of palatable food motivation. Behav Brain Res 2018; 359:396-400. [PMID: 30465814 DOI: 10.1016/j.bbr.2018.11.023] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2018] [Revised: 11/12/2018] [Accepted: 11/16/2018] [Indexed: 01/05/2023]
Abstract
Feeding behaviors can be modified via homeostatic and hedonic mechanisms. Homeostasis, while primarily concerned with maintaining energy balance via food consumption and energy expenditure, can alter food reward and motivation in response to food deprivation. Alternatively, reward and motivation of food is also driven by its palatability or hedonic nature, and this process can be augmented by opioid receptor activation. The present study examined sex differences in the motivational properties of sucrose pellets through manipulation of homeostatic and hedonic processes via acute food deprivation and acute systemic administration of morphine, respectively. The results showed that regardless of sex, systemic injections of morphine did not alter the motivation to obtain a sucrose pellet on a progressive ratio schedule of reinforcement but does significantly increase consumption of sucrose pellets when freely available. Male and female rats demonstrated similar increased consumption of sucrose pellets under free feeding conditions following acute (24-hours) food deprivation, compared to the non-deprived conditions. Overall, the findings from these experiments indicate that female rats work harder in order to obtain a sucrose pellet (under a Progressive Ratio (PR) schedule of reinforcement) and consume more sucrose pellets than males. However, while acute morphine administration causes similar increases on feeding in males and females, it does not alter motivation as measured by breakpoint on a PR schedule of reinforcement.
Collapse
Affiliation(s)
- Melissa A Tapia
- Department of Psychological Sciences, University of Missouri, Columbia, MO 65211, USA
| | - Jenna R Lee
- Interdisciplinary Neuroscience Program, University of Missouri, Columbia, MO 65211, USA
| | - Valerie N Weise
- Department of Psychological Sciences, University of Missouri, Columbia, MO 65211, USA
| | - Anna M Tamasi
- Department of Psychological Sciences, University of Missouri, Columbia, MO 65211, USA
| | - Matthew J Will
- Department of Psychological Sciences, University of Missouri, Columbia, MO 65211, USA.
| |
Collapse
|
28
|
Khaleghzadeh-Ahangar H, Khodagholi F, Shaerzadeh F, Haghparast A. Modulatory role of the intra-accumbal CB1 receptor in protein level of the c-fos and pCREB/CREB ratio in the nucleus accumbens and ventral tegmental area in extinction and morphine seeking in the rats. Brain Res Bull 2018; 142:320-327. [PMID: 30170186 DOI: 10.1016/j.brainresbull.2018.08.017] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Revised: 06/26/2018] [Accepted: 08/25/2018] [Indexed: 11/30/2022]
Abstract
Brain reward and motivation circuit begin from the ventral tegmental area (VTA) that its dopaminergic terminals project to various regions of the brain including the nucleus accumbens (NAc). This reward circuit is influenced by drugs of abuse such as morphine and cannabinoid. The present study tried to investigate the role of the intra-accumbal CB1 receptor in the c-fos level and pCREB/CREB ratio in the NAc and the VTA during reinstatement phase of morphine-induced conditioned place preference (CPP) by western blotting. The present data reveals that intra-accumbal administration of CB1 agonist, WIN55,212-2 (0.5, 1 and 2 mM/0.5 μl DMSO) before/during extinction period of morphine-induced CPP, significantly decreased the NAc and the VTA c-fos protein level in the reinstatement phase; whereas the pre-reinstatement administration of the CB1 agonist, increased the c-fos protein level. Intra-accumbal administration of the CB1 agonist during the extinction period of morphine-induced CPP reduced the pCREB/CREB ratio in the NAc. Also, the present data show that intra-accumbal administration of CB1 antagonist, AM251 (15, 45 and 90 μM/0.5 μl DMSO) during/after extinction period of morphine-induced CPP affects the NAc and the VTA c-fos protein level in the reinstatement phase. Also, intra-NAc microinjection of AM251 during the extinction period reduced pCREB/CREB ratio in these regions. In conclusion, the results presented here provide compelling evidence of the modulation and involvement of the c-fos and the CREB molecules in the cannabinoid-opioid interaction of the brain reward system in the CPP paradigm.
Collapse
MESH Headings
- Animals
- Benzoxazines/pharmacology
- Cannabinoid Receptor Modulators/pharmacology
- Cyclic AMP Response Element-Binding Protein/metabolism
- Dose-Response Relationship, Drug
- Drug-Seeking Behavior/drug effects
- Drug-Seeking Behavior/physiology
- Extinction, Psychological/drug effects
- Extinction, Psychological/physiology
- Male
- Morphine/pharmacology
- Morphine Dependence/metabolism
- Morpholines/pharmacology
- Naphthalenes/pharmacology
- Narcotics/pharmacology
- Nucleus Accumbens/drug effects
- Nucleus Accumbens/metabolism
- Phosphorylation
- Piperidines/pharmacology
- Proto-Oncogene Proteins c-fos/metabolism
- Pyrazoles/pharmacology
- Rats, Wistar
- Receptor, Cannabinoid, CB1/agonists
- Receptor, Cannabinoid, CB1/antagonists & inhibitors
- Receptor, Cannabinoid, CB1/metabolism
- Ventral Tegmental Area/drug effects
- Ventral Tegmental Area/metabolism
Collapse
Affiliation(s)
- Hossein Khaleghzadeh-Ahangar
- Department of Physiology, School of Medicine, Babol University of Medical Sciences, Babol, Iran; Neuroscience Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, Iran
| | - Fariba Khodagholi
- Neuroscience Research Center, School of Medicine, Shahid Beheshti University of Medical Sciences, P.O. Box 19615-1178, Tehran, Iran
| | - Fatemeh Shaerzadeh
- Molecular Medicine Research Center, Hormozgan Health Institute, Hormozgan University of Medical Sciences, Bandar Abbas, Iran; Department of Neuroscience, University of Florida College of Medicine and McKnight Brain Institute, Gainesville, FL, 32610, USA
| | - Abbas Haghparast
- Neuroscience Research Center, School of Medicine, Shahid Beheshti University of Medical Sciences, P.O. Box 19615-1178, Tehran, Iran.
| |
Collapse
|
29
|
Malfacini D, Simon K, Trapella C, Guerrini R, Zaveri NT, Kostenis E, Calo’ G. NOP receptor pharmacological profile - A dynamic mass redistribution study. PLoS One 2018; 13:e0203021. [PMID: 30161182 PMCID: PMC6117024 DOI: 10.1371/journal.pone.0203021] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Accepted: 08/14/2018] [Indexed: 12/12/2022] Open
Abstract
The Nociceptin/Orphanin FQ (N/OFQ) peptide NOP receptor is coupled to pertussis toxin (PTX)-sensitive G proteins (Gi/o) whose activation leads to the inhibition of both cAMP production and calcium channel activity, and to the stimulation of potassium currents. The label free dynamic mass redistribution (DMR) approach has been demonstrated useful for investigating the pharmacological profile of G protein-coupled receptors. Herein, we employ DMR technology to systematically characterize the pharmacology of a large panel of NOP receptor ligands. These are of peptide and non-peptide nature and display varying degrees of receptor efficacy, ranging from full agonism to pure antagonism. Using Chinese hamster ovary (CHO) cells expressing the human NOP receptor we provide rank orders of potency for full and partial agonists as well as apparent affinities for selective antagonists. We find the pharmacological profile of NOP receptor ligands to be similar but not identical to values reported in the literature using canonical assays for Gi/o-coupled receptors. Our data demonstrate that holistic label-free DMR detection can be successfully used to investigate the pharmacology of the NOP receptor and to characterize the cellular effects of novel NOP receptor ligands.
Collapse
Affiliation(s)
- Davide Malfacini
- Molecular, Cellular and Pharmacobiology Section, Institute for Pharmaceutical Biology, University of Bonn, Bonn, Germany
- Section of Pharmacology, Department of Medical Sciences, and National Institute of Neurosciences, University of Ferrara, Ferrara, Italy
- * E-mail:
| | - Katharina Simon
- Molecular, Cellular and Pharmacobiology Section, Institute for Pharmaceutical Biology, University of Bonn, Bonn, Germany
| | - Claudio Trapella
- Department of Chemical and Pharmaceutical Sciences and LTTA, University of Ferrara, Ferrara, Italy
| | - Remo Guerrini
- Department of Chemical and Pharmaceutical Sciences and LTTA, University of Ferrara, Ferrara, Italy
| | | | - Evi Kostenis
- Molecular, Cellular and Pharmacobiology Section, Institute for Pharmaceutical Biology, University of Bonn, Bonn, Germany
| | - Girolamo Calo’
- Section of Pharmacology, Department of Medical Sciences, and National Institute of Neurosciences, University of Ferrara, Ferrara, Italy
| |
Collapse
|
30
|
Jing Li J, Szkudlarek H, Renard J, Hudson R, Rushlow W, Laviolette SR. Fear Memory Recall Potentiates Opiate Reward Sensitivity through Dissociable Dopamine D1 versus D4 Receptor-Dependent Memory Mechanisms in the Prefrontal Cortex. J Neurosci 2018; 38:4543-4555. [PMID: 29686048 PMCID: PMC6705931 DOI: 10.1523/jneurosci.3113-17.2018] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Revised: 03/09/2018] [Accepted: 04/04/2018] [Indexed: 12/18/2022] Open
Abstract
Disturbances in prefrontal cortical (PFC) dopamine (DA) transmission are well established features of psychiatric disorders involving pathological memory processing, such as post-traumatic stress disorder and opioid addiction. Transmission through PFC DA D4 receptors (D4Rs) has been shown to potentiate the emotional salience of normally nonsalient emotional memories, whereas transmission through PFC DA D1 receptors (D1Rs) has been demonstrated to selectively block recall of reward- or aversion-related associative memories. In the present study, using a combination of fear conditioning and opiate reward conditioning in male rats, we examined the role of PFC D4/D1R signaling during the processing of fear-related memory acquisition and recall and subsequent sensitivity to opiate reward memory formation. We report that PFC D4R activation potentiates the salience of normally subthreshold fear conditioning memory cues and simultaneously potentiates the rewarding effects of systemic or intra-ventral tegmental area (VTA) morphine conditioning cues. In contrast, blocking the recall of salient fear memories with intra-PFC D1R activation, blocks the ability of fear memory recall to potentiate systemic or intra-VTA morphine place preference. These effects were dependent upon dissociable PFC phosphorylation states involving calcium-calmodulin-kinase II or extracellular signal-related kinase 1-2, following intra-PFC D4 or D1R activation, respectively. Together, these findings reveal new insights into how aberrant PFC DAergic transmission and associated downstream molecular signaling pathways may modulate fear-related emotional memory processing and concomitantly increase opioid addiction vulnerability.SIGNIFICANCE STATEMENT Post-traumatic stress disorder is highly comorbid with addiction. In this study, we use a translational model of fear memory conditioning to examine how transmission through dopamine D1 or D4 receptors, in the prefrontal cortex (PFC), may differentially control acquisition or recall of fear memories and how these mechanisms might regulate sensitivity to the rewarding effects of opioids. We demonstrate that PFC D4 activation not only controls the salience of fear memory acquisition, but potentiates the rewarding effects of opioids. In contrast, PFC D1 receptor activation blocks recall of fear memories and prevents potentiation of opioid reward effects. Together, these findings demonstrate novel PFC mechanisms that may account for how emotional memory disturbances might increase the addictive liability of opioid-class drugs.
Collapse
Affiliation(s)
| | | | | | - Roger Hudson
- Departments of Anatomy and Cell Biology, and
- Psychiatry, Schulich School of Medicine and Dentistry, University of Western Ontario, London, Ontario N6A 5C1, Canada
| | - Walter Rushlow
- Departments of Anatomy and Cell Biology, and
- Psychiatry, Schulich School of Medicine and Dentistry, University of Western Ontario, London, Ontario N6A 5C1, Canada
| | - Steven R Laviolette
- Departments of Anatomy and Cell Biology, and
- Psychiatry, Schulich School of Medicine and Dentistry, University of Western Ontario, London, Ontario N6A 5C1, Canada
| |
Collapse
|
31
|
AAPF News: AFP Edition. Am Fam Physician 2018; 97:558. [PMID: 29763260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
|
32
|
Solis E, Afzal A, Kiyatkin EA. Changes in brain oxygen and glucose induced by oxycodone: Relationships with brain temperature and peripheral vascular tone. Neuropharmacology 2018; 133:481-490. [PMID: 29476778 PMCID: PMC5858998 DOI: 10.1016/j.neuropharm.2018.02.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Revised: 02/13/2018] [Accepted: 02/19/2018] [Indexed: 12/31/2022]
Abstract
Oxycodone is a semi-synthetic opioid drug that is used to alleviate acute and chronic pain. However, oxycodone is often abused and, when taken at high doses, can induce powerful CNS depression that manifests in respiratory abnormalities, hypotension, coma, and death. Here, we employed several techniques to examine the effects of intravenous oxycodone at a wide range of doses on various metabolism-related parameters in awake, freely-moving rats. High-speed amperometry was used to assess how oxycodone affects oxygen and glucose levels in the nucleus accumbens (NAc). These measurements were supplemented by recordings of locomotor activity and temperature in the NAc, temporal muscle, and skin. At low doses, which are known to maintain self-administration behavior (0.15-0.3 mg/kg), oxycodone transiently decreased locomotor activity, induced modest brain and body hyperthermia, and monotonically increased NAc oxygen and glucose levels. While locomotor inhibition became stronger with higher oxycodone doses (0.6-1.2 mg/kg), NAc oxygen and glucose transiently decreased and subsequently increased. High-dose oxycodone induced similar biphasic down-up changes in brain and body temperature, with the initial decreases followed by increases. While cerebral vasodilation induced by neural activation appears to be the underlying mechanism for the correlative increases in brain oxygen and glucose levels, respiratory depression and the subsequent drop in blood oxygen likely mediate the brain hypoxia induced by large-dose oxycodone injections. The initial inhibitory effects induced by large-dose oxycodone injections could be attributed to rapid and profound CNS depression-the most dangerous health complication linked to opioid overdose in humans.
Collapse
Affiliation(s)
- Ernesto Solis
- Behavioral Neuroscience Branch, National Institute on Drug Abuse - Intramural Research Program, National Institutes of Health, DHHS, 333 Cassell Drive, Baltimore, MD 21224, USA
| | - Anum Afzal
- Behavioral Neuroscience Branch, National Institute on Drug Abuse - Intramural Research Program, National Institutes of Health, DHHS, 333 Cassell Drive, Baltimore, MD 21224, USA
| | - Eugene A Kiyatkin
- Behavioral Neuroscience Branch, National Institute on Drug Abuse - Intramural Research Program, National Institutes of Health, DHHS, 333 Cassell Drive, Baltimore, MD 21224, USA.
| |
Collapse
|
33
|
Di Martino L, Tarquini A, Mitchell I, Deshpande N. Effects of Opiates and Naloxone on Certain Enzymes of Carbohydrate Metabolism in Human Breast Carcinomas. Tumori 2018; 68:397-401. [PMID: 6294937 DOI: 10.1177/030089168206800507] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The effects of administration of opiates and naloxone on the activities of PFK, 6PGDH and α-GPDH and α-GPDH/6PGDH ratios in human breast carcinomas were investigated in patients awaiting mastectomy. Injection of naloxone or fentanyl into an antecubital vein resulted in a statistically significant reduction in the activity of α-GPDH. Fentanyl was also effective in reducing the activity of 6PGDH. Injection of morphine into a branch of the internal mammary artery during mastectomy failed to induce changes in the activities of any of the enzymes but injection of naloxone resulted in a significant rise in the activity of 6PGDH. It is postulated that these alterations in the activities might not be associated with the binding of these drugs to opiate receptor proteins in the carcinoma. Furthermore opiate agonists or antagonists might not produce the required changes in the activities of any of the enzymes.
Collapse
|
34
|
Abstract
Pharmacotherapy to treat stimulant use disorders continues to be an unmet medical need. Some evidence supports both the role of opioids in mediating abuse-related amphetamine effects and the potential utility of opioid antagonists as therapeutic candidates for treating amphetamine abuse. This study used intracranial self-stimulation (ICSS) to evaluate effects of exposure to and termination of naltrexone maintenance on rewarding amphetamine effects in an ICSS procedure in rats. Morphine and cocaine were included as positive and negative controls, respectively. Male Sprague-Dawley rats (N = 40) were trained to lever press for electrical brain stimulation to the medial forebrain bundle via an implanted electrode. Rats were then implanted with osmotic pumps delivering naltrexone (0.001 mg/kg/h, SC, 0.01 mg/kg/h, SC, or 0.1 mg/kg/h, SC) or saline for 14 days. Cumulative dose-effect curves were determined for amphetamine (0.032 mg/kg to 0.32 mg/kg), cocaine (1 mg/kg to 10 mg/kg), and morphine (1 mg/kg to 10 mg/kg) during the 2nd week of naltrexone maintenance. Additionally, dose-effect curves for morphine and amphetamine were determined again 24 hr after pump removal. Our results suggest that (a) exposure to and termination of naltrexone maintenance do not affect baseline ICSS responding, (b) naltrexone doses sufficient to antagonize morphine did not alter amphetamine or cocaine effects, and (c) termination of naltrexone treatment produced weak evidence for increased morphine sensitivity but no change in amphetamine effects. Our results do not support naltrexone as a pharmacotherapy for amphetamine and cocaine abuse and also suggest that termination from chronic naltrexone does not increase sensitivity to abuse-related morphine or amphetamine effects in ICSS. (PsycINFO Database Record
Collapse
|
35
|
Lamberts JT, Rosenthal LD, Jutkiewicz EM, Traynor JR. Role of the guanine nucleotide binding protein, Gα o, in the development of morphine tolerance and dependence. Psychopharmacology (Berl) 2018; 235:71-82. [PMID: 28971229 PMCID: PMC5819733 DOI: 10.1007/s00213-017-4742-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/29/2016] [Accepted: 09/13/2017] [Indexed: 12/15/2022]
Abstract
RATIONALE The use of morphine and other opioids for chronic pain is limited by the development of analgesic tolerance and physical dependence. Morphine produces its effects by activating the μ opioid receptor, which couples to Gαi/o-containing heterotrimeric G proteins. Evidence suggests that the antinociceptive effects of morphine are mediated by Gαo. However, the role of Gαo in the development of morphine tolerance and dependence is unknown. OBJECTIVE The objective of the study is to evaluate the contribution of Gαo to the development of morphine tolerance and dependence in mice. METHODS 129S6 mice lacking one copy of the Gαo gene (Gαo +/-) were administered morphine acutely or chronically. Mice were examined for tolerance to the antinociceptive action of morphine using the 52 °C hot plate as the nociceptive stimulus and for dependence by evaluating the severity of naltrexone-precipitated withdrawal. Wild-type littermates of the Gαo +/- mice were used as controls. Changes in μ receptor number and function were determined in midbrain and hindbrain homogenates using radioligand binding and μ agonist-stimulated [35S]GTPγS binding, respectively. RESULTS Following either acute or chronic morphine treatment, all mice developed antinociceptive tolerance and physical dependence, regardless of genotype. With chronic morphine treatment, Gαo +/- mice developed tolerance faster and displayed more severe naltrexone-precipitated withdrawal in some behaviors than did wild-type littermates. Morphine tolerance was not associated with changes in μ receptor number or function in brain homogenates from either wild-type or Gαo +/- mice. CONCLUSIONS These data suggest that the guanine nucleotide binding protein Gαo offers some protection against the development of morphine tolerance and dependence.
Collapse
Affiliation(s)
- Jennifer T Lamberts
- Department of Pharmacology and Edward F. Domino Research Center, University of Michigan Medical School, 1150 W. Medical Center Dr., 1301 MSRB III, Ann Arbor, MI, 48109-5632, USA
- College of Pharmacy, Ferris State University, Big Rapids, MI, 49307, USA
| | - Lisa D Rosenthal
- Department of Pharmacology and Edward F. Domino Research Center, University of Michigan Medical School, 1150 W. Medical Center Dr., 1301 MSRB III, Ann Arbor, MI, 48109-5632, USA
| | - Emily M Jutkiewicz
- Department of Pharmacology and Edward F. Domino Research Center, University of Michigan Medical School, 1150 W. Medical Center Dr., 1301 MSRB III, Ann Arbor, MI, 48109-5632, USA
| | - John R Traynor
- Department of Pharmacology and Edward F. Domino Research Center, University of Michigan Medical School, 1150 W. Medical Center Dr., 1301 MSRB III, Ann Arbor, MI, 48109-5632, USA.
| |
Collapse
|
36
|
Hutson LW, Lebonville CL, Jones ME, Fuchs RA, Lysle DT. Interleukin-1 signaling in the basolateral amygdala is necessary for heroin-conditioned immunosuppression. Brain Behav Immun 2017; 62:171-179. [PMID: 28131792 PMCID: PMC5828772 DOI: 10.1016/j.bbi.2017.01.017] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Revised: 01/14/2017] [Accepted: 01/23/2017] [Indexed: 12/22/2022] Open
Abstract
Heroin administration suppresses the production of inducible nitric oxide (NO), as indicated by changes in splenic inducible nitric oxide synthase (iNOS) and plasma nitrate/nitrite. Since NO is a measure of host defense against infection and disease, this provides evidence that heroin can increase susceptibility to pathogens by directly interacting with the immune system. Previous research in our laboratory has demonstrated that these immunosuppressive effects of heroin can also be conditioned to environmental stimuli by repeatedly pairing heroin administration with a unique environmental context. Re-exposure to a previously drug-paired context elicits immunosuppressive effects similar to heroin administration alone. In addition, our laboratory has reported that the basolateral amygdala (BLA) and medial nucleus accumbens shell (mNAcS) are critical neural substrates that mediate this conditioned effect. However, our understanding of the contributing mechanisms within these brain regions is limited. It is known that the cytokine interleukin-1 (IL-1) plays an important role in learning and memory. In fact, our laboratory has demonstrated that inhibition of IL-1β expression in the dorsal hippocampus (DH) prior to re-exposure to a heroin-paired context prevents the suppression of measures of NO production. Therefore, the present studies sought to further investigate the role of IL-1 in heroin-conditioned immunosuppression. Blockade of IL-1 signaling in the BLA, but not in the caudate putamen or mNAcS, using IL-1 receptor antagonist (IL-1Ra) attenuated heroin-conditioned immunosuppression of NO production as measured by plasma nitrate/nitrite and iNOS mRNA expression in spleen tissue. Taken together, these findings suggest that IL-1 signaling in the BLA is necessary for the expression of heroin-conditioned immunosuppression of NO production and may be a target for interventions that normalize immune function in heroin users and patient populations exposed to opiate regimens.
Collapse
Affiliation(s)
- Lee W Hutson
- University of North Carolina at Chapel Hill, Department of Psychology and Neuroscience, Chapel Hill, NC, USA
| | - Christina L Lebonville
- University of North Carolina at Chapel Hill, Department of Psychology and Neuroscience, Chapel Hill, NC, USA
| | - Meghan E Jones
- University of North Carolina at Chapel Hill, Department of Psychology and Neuroscience, Chapel Hill, NC, USA
| | - Rita A Fuchs
- Washington State University, College of Veterinary Medicine, Department of Integrative Physiology and Neuroscience, Pullman, WA, USA
| | - Donald T Lysle
- University of North Carolina at Chapel Hill, Department of Psychology and Neuroscience, Chapel Hill, NC, USA.
| |
Collapse
|
37
|
Tahoun IF, Abouzied EM. THE EFFECT OF THE TRAMADOL ACCUMULATED IN RAT LIVER ON THE DEVELOPMENT OF THE IMMATURE STAGES OF THE FLESH FLY SARCOPHAGA ARGYROSTOMA (ROBINEAU-DESVOIDY, 1830) (DIPTERA: SARCOPHAGIDAE). J Egypt Soc Parasitol 2017; 47:55-64. [PMID: 30157333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The present study investigated the effects of the accumulation of tramadol on the development rates of the larvae and pupae. Larvae of the flesh fly Sarcophaga argyrostoma (Robineau-Desvoidy, 1830) were reared on three groups of Wister albino rat livers. One group was administered the recommended or normal dose (Dl) and the second group was injected with higher over or double dose (D2) of tramadol. Tramadol was administered by stomach tube once a day, for 3 months. The third group was injected with normal saline solution as the control. Using GC-Ms analysis, Rat livers contained 0.72 and 1.62mg/g of tramadol, in case of Dl and D2, respectively. Larvae of S. argyrostoma fed on DI and D2 rat livers contained (0.11 & 0.1 8mg/g), respectively. The corresponding tramadol concentrations persisted in the produced pupae of S. argyrostoma were (0.07 & 0.09mg/g), respectively. The accumulation of tramadol in tissues of S. argyrostoma larvae reduced the durations of larval stadia from (7.0408 1.0198 days) in case of the control to (6.6383±0.4857 days) when fed on DI liver and (6.3438±0.4826 days) when fed on D2 livers. The pupal durations was altered to (14.3750±0.4919 days) for D2 and (14.9574±0.6580 days) for DI, compared to (13.9167±1.0071 days), in case of the control. The average weight of the 3rd day larva of S. argyrostoma decreased from 18.1807±1.4949mg, in case of the control to 14.7279±1.3366mg and 14.9560±3.8210mg, when fed on Dl and D2 tramadol treated livers. In contrast, corresponding weight produced pupae increased from 14.1750±0.4667mg (control). to 15.2449±0.302mg & 15.9062±0.2888mg, in case of D1 and D2, respectively.
Collapse
|
38
|
Colloca L, Ludman T, Bouhassira D, Baron R, Dickenson AH, Yarnitsky D, Freeman R, Truini A, Attal N, Finnerup NB, Eccleston C, Kalso E, Bennett DL, Dworkin RH, Raja SN. Neuropathic pain. Nat Rev Dis Primers 2017; 3:17002. [PMID: 28205574 DOI: 10.1038/nrdp.2017.3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Neuropathic pain is caused by a lesion or disease of the somatosensory system, including peripheral fibres (Aβ, Aδ and C fibres) and central neurons, and affects 7-10% of the general population. Multiple causes of neuropathic pain have been described and its incidence is likely to increase owing to the ageing global population, increased incidence of diabetes mellitus and improved survival from cancer after chemotherapy. Indeed, imbalances between excitatory and inhibitory somatosensory signalling, alterations in ion channels and variability in the way that pain messages are modulated in the central nervous system all have been implicated in neuropathic pain. The burden of chronic neuropathic pain seems to be related to the complexity of neuropathic symptoms, poor outcomes and difficult treatment decisions. Importantly, quality of life is impaired in patients with neuropathic pain owing to increased drug prescriptions and visits to health care providers, as well as the morbidity from the pain itself and the inciting disease. Despite challenges, progress in the understanding of the pathophysiology of neuropathic pain is spurring the development of new diagnostic procedures and personalized interventions, which emphasize the need for a multidisciplinary approach to the management of neuropathic pain.
Collapse
Affiliation(s)
- Luana Colloca
- Department of Pain and Translational Symptom Science, School of Nursing and Department of Anesthesiology School of Medicine, University of Maryland, 655 West Lombard Street, 21201 Baltimore, Maryland, USA
| | - Taylor Ludman
- Department of Pain and Translational Symptom Science, School of Nursing and Department of Anesthesiology School of Medicine, University of Maryland, 655 West Lombard Street, 21201 Baltimore, Maryland, USA
| | - Didier Bouhassira
- INSERM, Unit 987, Ambroise Paré Hospital, UVSQ, Boulogne Billancourt, France
| | - Ralf Baron
- Department of Neurology, Division of Neurological Pain Research and Therapy, Klinik fur Neurologie Christian-Albrechts-Universität Kiel, Kiel, Germany
| | - Anthony H Dickenson
- Department of Neuroscience, Physiology and Pharmacology, University College London, London, UK
| | - David Yarnitsky
- Department of Neurology, Rambam Health Care Campus, Technion Faculty of Medicine, Haifa, Israel
| | - Roy Freeman
- Department of Neurology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Andrea Truini
- Department of Neurology and Psychiatry, Sapienza University, Rome, Italy
| | - Nadine Attal
- Pain Evaluation and Treatment Centre of Hôpital Ambroise Paré, Paris, France
| | - Nanna B Finnerup
- Department of Clinical Medicine - The Danish Pain Research Center, Aarhus University, Aarhus, Denmark
| | - Christopher Eccleston
- Centre for Pain Research, University of Bath, Bath, UK
- Department of Clinical and Health Psychology, Ghent University, Ghent, Belgium
| | - Eija Kalso
- Division of Pain Medicine, Department of Anesthesiology, Intensive Care and Pain Medicine, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - David L Bennett
- Nuffield Department of Clinical Neuroscience, University of Oxford, Oxford, UK
| | - Robert H Dworkin
- Department of Anesthesiology, School of Medicine and Dentistry, University of Rochester, Rochester, New York, USA
| | - Srinivasa N Raja
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| |
Collapse
|
39
|
Abstract
This review summarizes modern data on the structure and functions ofheteromersformed by D1 and D2 dopamine receptors focusing on their role in the mechanisms of drug dependence. This article discusses potential functional significance of heterodimeric D1-D2 dopamine receptorsdue to their localization in the brain as well as unique pharmacological propertiesversus constituent monomers. It is shown that heteromerization results in dramatic changes in activated signaling pathways compare to the corresponding monomers. These studies update our current knowledge of ligand-receptor interactions and provide better understanding of dopamine receptors pharmacology. Furthermore elucidation of significance of heterodimeric D1-D2 dopamine receptors as drug targets is important for the development of new effective drug addiction treatment.
Collapse
Affiliation(s)
- N L Vekshina
- V.P. Serbsky Federal Medical Research Center on Psychiatry and Narcology, Moscow, Russia
| | - P K Anokhin
- V.P. Serbsky Federal Medical Research Center on Psychiatry and Narcology, Moscow, Russia
| | - A G Veretinskaya
- V.P. Serbsky Federal Medical Research Center on Psychiatry and Narcology, Moscow, Russia
| | - I Yu Shamakina
- V.P. Serbsky Federal Medical Research Center on Psychiatry and Narcology, Moscow, Russia
| |
Collapse
|
40
|
Wang Y, Yao Y, Li Y, Nie H, He X. Prenatal morphine exposure during late embryonic stage enhances the rewarding effects of morphine and induces the loss of membrane-bound protein kinase C-α in intermediate medial mesopallium in the chick. Neurosci Lett 2016; 639:25-30. [PMID: 27989573 DOI: 10.1016/j.neulet.2016.12.030] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2016] [Revised: 12/12/2016] [Accepted: 12/14/2016] [Indexed: 11/17/2022]
Abstract
The susceptibility to drug abuse may be associated with the structural and/or functional changes in the reward-related brain regions induced by drug exposure during sensitive periods of embryonic development. Previously, we have found that prenatal morphine exposure during embryonic days 17-20 may be crucial for developing the susceptibility to morphine reward after hatching. However, the underlying structure and cellular mechanisms need further investigation. In the present study, the chicks of a few days old, which were prenatally exposed to morphine during E17-20, obviously showed higher preference for the morphine-paired chamber and hyperactivity during the expression of morphine conditioned place preference (CPP), and the reduction in membrane-bound of PKCα of the bilateral intermediate medial mesopallium (IMM) assayed immunologically. These results indicate that the decreased expression of PKCα in IMM may participate in the development of the susceptibility to the rewarding effects of morphine in chicks prenatally exposed to morphine, and provide further support for the cross-species evolutionary concordance among amniotes.
Collapse
Affiliation(s)
- Ying Wang
- School of Medical Humanities, Tianjin Medical University, Tianjin, PR China
| | - Yang Yao
- Department of Clinical Biochemistry, School of Medical Laboratory, Tianjin Medical University, Tianjin, PR China
| | - Yuan Li
- Department of Laboratory Animal Sciences, Tianjin Medical University, Tianjin, PR China
| | - Han Nie
- College of Traditional Chinese Medicine, China Pharmaceutical University, Nanjing, PR China
| | - Xingu He
- School of Medical Humanities, Tianjin Medical University, Tianjin, PR China.
| |
Collapse
|
41
|
Sanchez V, Carpenter MD, Yohn NL, Blendy JA. Long-lasting effects of adolescent oxycodone exposure on reward-related behavior and gene expression in mice. Psychopharmacology (Berl) 2016; 233:3991-4002. [PMID: 27624598 PMCID: PMC5992616 DOI: 10.1007/s00213-016-4425-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Accepted: 09/04/2016] [Indexed: 11/28/2022]
Abstract
RATIONALE Prescription opioid abuse and transition to heroin use are growing problems in the USA. However, the long-term consequences of adolescent prescription opioid abuse on subsequent drug use and affective-like behavior are unknown. OBJECTIVES This study aims to determine if adolescent exposure to oxycodone alters the rewarding effects of morphine, anxiety-like behavior, and reward-related gene expression later in adulthood. METHODS Adolescent male C57Bl/6 mice were exposed to oxycodone (3 mg/kg/day) via osmotic minipumps for 28 days. Following a 28-day withdrawal period, mice were tested in morphine-conditioned place preference paradigm (CPP), morphine sensitization, open field, marble burying, and forced swim (FST) tests. To determine if effects were specific to adolescent exposure, adult mice were exposed to oxycodone for 28 days and underwent 28 days of withdrawal prior to the same behavioral testing schedule. Expression of reward-related genes including dopamine receptor 1 (D1) and dopamine transporter (DAT) in the nucleus accumbens (NAc) and ventral tegmental area (VTA) was examined. RESULTS Adolescent oxycodone exposure significantly increased (300 %) response to morphine CPP during adulthood and significantly reduced D1 expression (30 %) in the NAc and DAT expression (75 %) in the VTA. Adult oxycodone exposure did not affect subsequent responses to morphine CPP. Oxycodone exposure did not affect the development of morphine sensitization or affective-like behaviors. Corticosterone response to a stressor (FST) was significantly reduced (65 %) in mice exposed to oxycodone during adolescence but not adulthood. CONCLUSIONS Adolescent oxycodone exposure enhances rewarding effects of morphine in adulthood with no effect on other affective-like behaviors.
Collapse
Affiliation(s)
- Victoria Sanchez
- Department of Systems Pharmacology and Translational Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Translational Research Laboratory, 125 South 31st Street, Philadelphia, PA19104, USA
| | - Marco D Carpenter
- Department of Systems Pharmacology and Translational Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Translational Research Laboratory, 125 South 31st Street, Philadelphia, PA19104, USA
| | - Nicole L Yohn
- Department of Systems Pharmacology and Translational Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Translational Research Laboratory, 125 South 31st Street, Philadelphia, PA19104, USA
| | - Julie A Blendy
- Department of Systems Pharmacology and Translational Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Translational Research Laboratory, 125 South 31st Street, Philadelphia, PA19104, USA.
| |
Collapse
|
42
|
Farahmandfar M, Kadivar M, Rastipisheh S. Blockade of dorsal hippocampal orexin-1 receptors impaired morphine-induced state-dependent learning. Neuropeptides 2016; 60:13-19. [PMID: 27751532 DOI: 10.1016/j.npep.2016.10.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2016] [Revised: 09/18/2016] [Accepted: 10/09/2016] [Indexed: 11/26/2022]
Abstract
Behavioral abnormalities associated with opiate addiction include memory and learning deficits, which are the result of some alterations in the neuromodulatory systems. Recently, orexin has shown to influence drug addiction neural circuitry, specifically in mediating reward-related perception and memory. To explore the possible interaction of orexinergic and opioidergic system on modulation of learning and memory, we have investigated the effects of intra-dorsal hippocampal (intra-CA1) administration of orexin-1 receptor agonist and the competitive orexin-1 antagonist, SB-334867, on morphine-induced memory impairment by using step-down passive avoidance task in mice. Pre-training injection of morphine (5mg/kg, i.p.) impaired memory, which was restored when 24h later the same dose of the drug was administered. Pre-test administration of orexin-1 (0.5, 5 and 50pmol, intra-CA1) had not a significant effect on the retention latency compared to the saline-treated animals, but it restored the memory impairment induced by pre-training morphine (5mg/kg, i.p.). Pre-test administration of SB-334867 (10, 20 and 40nmol, intra-CA1) by itself decreased the retention latencies of passive avoidance task. Co-administration of orexin-1 (0.5, 5 and 50pmol, intra-CA1) and morphine (1mg/kg, i.p.) on the test day induced morphine state-dependent memory. Conversely, pre-test injection of SB-334867 (10, 20 and 40nmol, intra-CA1) inhibited the orexin-1-induced potentiation of morphine state-dependent learning on the test day. It is concluded that dorsal hippocampal orexin-1 receptors may be involved, at least in part, in morphine state-dependent learning in mice.
Collapse
Affiliation(s)
- Maryam Farahmandfar
- Department of Neuroscience, School of Advanced Medical Technologies, Tehran University of Medical Sciences, Tehran, Iran; Iranian National Center for Addiction Studies, Tehran University of Medical Sciences, Tehran, Iran.
| | - Mehdi Kadivar
- Department of Biochemistry, Pasteur Institute of Iran, Tehran, Iran
| | | |
Collapse
|
43
|
Peregud DI, Stepanichev MY, Lazareva NA, Panchenko LF, Gulyaeva NV. [Effect of a Single Injection of Brain Derived Neurotrophic Factor into Midline Ventral Tegmental Area on Morphine Reinforcing Properties]. Zh Vyssh Nerv Deiat Im I P Pavlova 2016; 66:632-640. [PMID: 30695408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Opiate reinforcement is considered as a stimulus inducing addiction, however underlying neurobiological mechanisms remain obscure. According to the literature, BDNF (brain-derived neurotrophic factor) in the lateral ventral tegmental area (VTA) could modulate morphine reinforcement, but the role of BDNF in the midline VTA has not been studied yet. The aim of the study was to investigate the effect of a single intra-mid- line VTA injection on the acquisition and expression of morphine conditioned place preference (CPP). CPP procedure was composed of eight conditioning sessions (one session per day): morphine (i.p., 10 mg/kg) and saline injections were paired to the compartments and counterbalanced.Recombinant human BDNF (0.75 ug) or phosphate-buffered saline (PBS) as a vehicle were injected once into the midline VTA one day before or after conditioning. According to the CPP test rats spent more time in the morphine-paired compartments a scompared to the saline-paired compartments (p < 0.05). After a single BDNF injection into the midline VTA be- fore conditioning, but not after conditioning, differences in time spent in morphine and saline-paired compartments did not reach significance (p > 0.05). Thus, taking into account limitations of the results, we sug- gest that BDNF in the midline VTA may block morphine reinforcement.
Collapse
|
44
|
Jung C, Rabinowitsch A, Lee WT, Zheng D, de Vaca SC, Carr KD. Effects of food restriction on expression of place conditioning and biochemical correlates in rat nucleus accumbens. Psychopharmacology (Berl) 2016; 233:3161-72. [PMID: 27376947 PMCID: PMC4982816 DOI: 10.1007/s00213-016-4360-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Accepted: 06/09/2016] [Indexed: 12/17/2022]
Abstract
RATIONALE When ad libitum-fed rats undergo cocaine place preference conditioning (CPP) but are switched to food restriction for testing, CPP becomes resistant to extinction and correlates with phosphorylation of α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) receptor GluA1 at Ser845 in nucleus accumbens (NAc) core. OBJECTIVES This study tested whether food restriction increases persistence of morphine CPP and conditioned place aversions (CPA) induced by LiCl and naloxone-precipitated morphine withdrawal. MATERIALS AND METHODS Ad libitum-fed rats were conditioned with morphine (6.0 mg/kg, i.p.), LiCl (50.0/75.0 mg/kg, i.p.), or naloxone (1.0 mg/kg, s.c.) 22 h post-morphine (20.0 mg/kg, s.c.). Half of the subjects were then switched to food restriction. Daily testing resumed 3 weeks later, and brains were harvested when one diet group met extinction criterion. Western analyses probed for pSer845-GluA1, pERK1, and pERK2 in NAc. RESULTS Food restriction increased persistence of morphine CPP and preference scores correlated with pSer845-GluA1 in NAc core and shell. LiCl CPA was curtailed by food restriction, yet pSer845-GluA1 and pERK2 were elevated in NAc core of food-restricted rats. Food restriction increased persistence of naloxone CPA and elevated pSer845-GluA1 in NAc core and shell, and aversion scores were negatively correlated with pERK1 and pERK2 in NAc core. CONCLUSIONS These results suggest that food restriction prolongs responsiveness to environmental contexts paired with subjective effects of both morphine and morphine withdrawal. A mechanistic scheme, attributing these effects to upregulation of pSer845-GluA1, but subject to override by CPA-specific, pERK2-mediated extinction learning, is explored to accommodate opposite effects of food restriction on LiCl and naloxone CPA.
Collapse
Affiliation(s)
- Caroline Jung
- Department of Psychiatry, New York University School of Medicine, Alexandria Center for Life Sciences, 450 East 29th Street, New York, NY, 10016, USA
| | - Ariana Rabinowitsch
- Department of Psychiatry, New York University School of Medicine, Alexandria Center for Life Sciences, 450 East 29th Street, New York, NY, 10016, USA
| | - Wei Ting Lee
- Department of Biochemistry and Molecular Pharmacology, New York University School of Medicine, Alexandria Center for Life Sciences, 450 East 29th Street, New York, NY, 10016, USA
| | - Danielle Zheng
- Department of Biochemistry and Molecular Pharmacology, New York University School of Medicine, Alexandria Center for Life Sciences, 450 East 29th Street, New York, NY, 10016, USA
| | - Soledad Cabeza de Vaca
- Department of Psychiatry, New York University School of Medicine, Alexandria Center for Life Sciences, 450 East 29th Street, New York, NY, 10016, USA
| | - Kenneth D Carr
- Department of Psychiatry, New York University School of Medicine, Alexandria Center for Life Sciences, 450 East 29th Street, New York, NY, 10016, USA.
- Department of Biochemistry and Molecular Pharmacology, New York University School of Medicine, Alexandria Center for Life Sciences, 450 East 29th Street, New York, NY, 10016, USA.
| |
Collapse
|
45
|
Bodi CM, Vassoler FM, Byrnes EM. Adolescent experience affects postnatal ultrasonic vocalizations and gene expression in future offspring. Dev Psychobiol 2016; 58:714-23. [PMID: 26999300 PMCID: PMC5320520 DOI: 10.1002/dev.21411] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2015] [Accepted: 03/05/2016] [Indexed: 12/21/2022]
Abstract
The present study measured postnatal ultrasonic vocalization (USV) and gene expression to examine potential changes in communication and/or attachment in the offspring of mothers exposed to morphine during adolescence. Offspring of morphine-exposed (Mor-F1), saline-exposed (Sal-F1), or non-handled control (Con-F1) female Sprague-Dawley rats were tested for separation-induced distress calls and maternal potentiation of distress calls during early postnatal development. We also examined relative expression of dopamine D2 receptor and mu opioid receptor (oprm1) mRNA in the nucleus accumbens and hypothalamus in these offspring, as their activity has been implicated in the regulation of postnatal USV in response to maternal separation. The findings indicate that adolescent experiences of future mothers, including their 10 daily saline or morphine injections, can result in significant region-specific differences in gene expression. In addition, these experiences resulted in fewer numbers of separation-induced distress calls produced by offspring. In contrast, augmented maternal potentiation was only observed in Mor-F1 offspring. © 2016 Wiley Periodicals, Inc. Dev Psychobiol 58:714-723, 2016.
Collapse
Affiliation(s)
- Caroline M Bodi
- Department of Biomedical Sciences, Cummings School of Veterinary Medicine, Tufts University, 200 Westboro Road, North Grafton, 01536, MA
| | - Fair M Vassoler
- Department of Biomedical Sciences, Cummings School of Veterinary Medicine, Tufts University, 200 Westboro Road, North Grafton, 01536, MA
| | - Elizabeth M Byrnes
- Department of Biomedical Sciences, Cummings School of Veterinary Medicine, Tufts University, 200 Westboro Road, North Grafton, 01536, MA.
| |
Collapse
|
46
|
Lebonville CL, Jones ME, Hutson LW, Cooper LB, Fuchs RA, Lysle DT. Acquisition of heroin conditioned immunosuppression requires IL-1 signaling in the dorsal hippocampus. Brain Behav Immun 2016; 56:325-34. [PMID: 27072068 PMCID: PMC4917416 DOI: 10.1016/j.bbi.2016.04.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Revised: 03/31/2016] [Accepted: 04/08/2016] [Indexed: 12/31/2022] Open
Abstract
Opioid users experience increased incidence of infection, which may be partially attributable to both direct opiate-immune interactions and conditioned immune responses. Previous studies have investigated the neural circuitry governing opioid conditioned immune responses, but work remains to elucidate the mechanisms mediating this effect. Our laboratory has previously shown that hippocampal IL-1 signaling, specifically, is required for the expression of heroin conditioned immunosuppression following learning. The current studies were designed to further characterize the role of hippocampal IL-1 in this phenomenon by manipulating IL-1 during learning. Experiment 1 tested whether hippocampal IL-1 is also required for the acquisition of heroin conditioned immunosuppression, while Experiment 2 tested whether hippocampal IL-1 is required for the expression of unconditioned heroin immunosuppression. We found that blocking IL-1 signaling in the dorsal hippocampus with IL-1RA during each conditioning session, but not on interspersed non-conditioning days, significantly attenuated the acquisition of heroin conditioned immunosuppression. Strikingly, we found that the same IL-1RA treatment did not alter unconditioned immunosuppression to a single dose of heroin. Thus, IL-1 signaling is not a critical component of the response to heroin but rather may play a role in the formation of the association between heroin and the context. Collectively, these studies suggest that IL-1 signaling, in addition to being involved in the expression of a heroin conditioned immune response, is also involved in the acquisition of this effect. Importantly, this effect is likely not due to blocking the response to the unconditioned stimulus since IL-1RA did not affect heroin's immunosuppressive effects.
Collapse
Affiliation(s)
- Christina L Lebonville
- University of North Carolina at Chapel Hill, Department of Psychology and Neuroscience, CB#3270, Chapel Hill, NC 27599-3270, USA
| | - Meghan E Jones
- University of North Carolina at Chapel Hill, Department of Psychology and Neuroscience, CB#3270, Chapel Hill, NC 27599-3270, USA
| | - Lee W Hutson
- University of North Carolina at Chapel Hill, Department of Psychology and Neuroscience, CB#3270, Chapel Hill, NC 27599-3270, USA
| | - Letty B Cooper
- University of North Carolina at Chapel Hill, Department of Psychology and Neuroscience, CB#3270, Chapel Hill, NC 27599-3270, USA
| | - Rita A Fuchs
- Washington State University College of Veterinary Medicine, Department of Integrative Physiology and Neuroscience, PO Box 647620, Pullman, WA 99164-7620, USA
| | - Donald T Lysle
- University of North Carolina at Chapel Hill, Department of Psychology and Neuroscience, CB#3270, Chapel Hill, NC 27599-3270, USA.
| |
Collapse
|
47
|
Wu X, Zhao N, Bai F, Li C, Liu C, Wei J, Zong W, Yang L, Ryabinin AE, Ma Y, Wang J. Morphine-induced conditioned place preference in rhesus monkeys: Resistance to inactivation of insula and extinction. Neurobiol Learn Mem 2016; 131:192-200. [PMID: 27101734 DOI: 10.1016/j.nlm.2016.04.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Revised: 03/07/2016] [Accepted: 04/16/2016] [Indexed: 01/23/2023]
Abstract
Drug addicts experience strong craving episodes in response to drug-associated cues. Attenuating these responses using pharmacological or behavioral approaches could aid recovery from addiction. Cue-induced drug seeking can be modeled using the conditioned place preference procedure (CPP). Our previous work showed that conditioned place preference (CPP) can be induced by administration of increasing doses of morphine in rhesus monkeys. Here, we investigated whether expression of morphine-induced CPP can be attenuated by inhibiting activity of insular cortex or by repeated unreinforced exposures to the CPP test. The insula has been demonstrated to be involved in addiction to several drugs of abuse. To test its role in morphine CPP, bilateral cannulae were implanted into the insula in seven adult monkeys. The CPP was established using a biased apparatus by intramuscular injections of morphine at increasing doses (1.5, 3.0 and 4.5mg/kg) for each monkey. After the monkeys established morphine CPP, their insulae were reversibly inactivated by bilateral microinjection with 5% lidocaine (40μl) prior to the post-conditioning test (expression) of CPP using a within-subject design. The microinjections of lidocaine failed to affect CPP expression when compared to saline injections. We subsequently investigated morphine-associated memory during six episodes of CPP tests performed in these monkeys over the following 75.0±0.2months. While the preference score showed a declining trend with repeated testing, morphine-induced CPP was maintained even on the last test performed at 75months post-conditioning. This observation indicated strong resistance of morphine-induced memories to extinction in rhesus monkeys. Although these data do not confirm involvement of insula in morphine-induced CPP, our observation that drug-associated memories can be maintained over six drug-free years following initial experience with morphine has important implications for treatment of drug addiction using extinction therapy.
Collapse
Affiliation(s)
- XuJun Wu
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China; Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, China
| | - Ning Zhao
- Second Department of Neurosurgery, First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Fan Bai
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China
| | - ChuanYu Li
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China
| | - CiRong Liu
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China
| | - JingKuan Wei
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China; Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, China
| | - Wei Zong
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China
| | - LiXin Yang
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China
| | - Andrey E Ryabinin
- Department of Behavioral Neuroscience, Oregon Health & Science University, Portland, OR, USA
| | - YuanYe Ma
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China
| | - JianHong Wang
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China.
| |
Collapse
|
48
|
Erbs E, Faget L, Ceredig RA, Matifas A, Vonesch JL, Kieffer BL, Massotte D. Impact of chronic morphine on delta opioid receptor-expressing neurons in the mouse hippocampus. Neuroscience 2015; 313:46-56. [PMID: 26480813 DOI: 10.1016/j.neuroscience.2015.10.022] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Revised: 10/08/2015] [Accepted: 10/12/2015] [Indexed: 11/18/2022]
Abstract
Delta opioid (DOP) receptors participate to the control of chronic pain and emotional responses. Recent data also identified their implication in spatial memory and drug-context associations pointing to a critical role of hippocampal delta receptors. To better appreciate the impact of repeated drug exposure on their modulatory activity, we used fluorescent knock-in mice that express a functional delta receptor fused at its carboxy-terminus with the green fluorescent protein in place of the native receptor. We then tested the impact of chronic morphine treatment on the density and distribution of delta receptor-expressing cells in the hippocampus. A decrease in delta receptor-positive cell density was observed in the CA1, CA3 and dentate gyrus without alteration of the distribution across the different GABAergic populations that mainly express delta receptors. This effect partly persisted after four weeks of morphine abstinence. In addition, we observed increased DOP receptor expression at the cell surface compared to saline-treated animals. In the hippocampus, chronic morphine administration thus induces DOP receptor cellular redistribution and durably decreases delta receptor-expressing cell density. Such modifications are likely to alter hippocampal physiology, and to contribute to long-term cognitive deficits.
Collapse
Affiliation(s)
- E Erbs
- Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), CNRS/INSERM/UdS, 1 Rue Laurent Fries, F-67404 Illkirch-Graffenstaden, France
| | - L Faget
- Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), CNRS/INSERM/UdS, 1 Rue Laurent Fries, F-67404 Illkirch-Graffenstaden, France
| | - R A Ceredig
- Institut des Neurosciences Cellulaires et Intégratives, UPR 3212, 5 Rue Blaise Pascal, F-67084 Strasbourg, France
| | - A Matifas
- Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), CNRS/INSERM/UdS, 1 Rue Laurent Fries, F-67404 Illkirch-Graffenstaden, France
| | - J-L Vonesch
- Imaging Center IGBMC, CNRS/INSERM/UdS, 1 Rue Laurent Fries, F-67404 Illkirch-Graffenstaden, France
| | - B L Kieffer
- Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), CNRS/INSERM/UdS, 1 Rue Laurent Fries, F-67404 Illkirch-Graffenstaden, France; Douglas Hospital Research Center, Department of Psychiatry, McGill University, 6875, Boulevard LaSalle, Montreal (Quebec) H4H 1R3, Canada
| | - D Massotte
- Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), CNRS/INSERM/UdS, 1 Rue Laurent Fries, F-67404 Illkirch-Graffenstaden, France; Institut des Neurosciences Cellulaires et Intégratives, UPR 3212, 5 Rue Blaise Pascal, F-67084 Strasbourg, France.
| |
Collapse
|
49
|
García-Carmona JA, Camejo DM, Almela P, Jiménez A, Milanés MV, Sevilla F, Laorden ML. CP-154,526 Modifies CREB Phosphorylation and Thioredoxin-1 Expression in the Dentate Gyrus following Morphine-Induced Conditioned Place Preference. PLoS One 2015; 10:e0136164. [PMID: 26313266 PMCID: PMC4551807 DOI: 10.1371/journal.pone.0136164] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2015] [Accepted: 07/31/2015] [Indexed: 12/31/2022] Open
Abstract
Corticotropin-releasing factor (CRF) acts as neuro-regulator of the behavioral and emotional integration of environmental and endogenous stimuli associated with drug dependence. Thioredoxin-1 (Trx-1) is a functional protein controlling the redox status of several proteins, which is involved in addictive processes. In the present study, we have evaluated the role of CRF1 receptor (CRF1R) in the rewarding properties of morphine by using the conditioned place preference (CPP) paradigm. We also investigate the effects of the CRF1R antagonist, CP-154,526, on the morphine CPP-induced activation of CRF neurons, CREB phosphorylation and Trx expression in paraventricular nucleus (PVN) and dentate gyrus (DG) of the mice brain. CP-154,526 abolished the acquisition of morphine CPP and the increase of CRF/pCREB positive neurons in PVN. Moreover, this CRF1R antagonist prevented morphine-induced CRF-immunoreactive fibers in DG, as well as the increase in pCREB expression in both the PVN and DG. In addition, morphine exposure induced an increase in Trx-1 expression in DG without any alterations in PVN. We also observed that the majority of pCREB positive neurons in DG co-expressed Trx-1, suggesting that Trx-1 could activate CREB in the DG, a brain region involved in memory consolidation. Altogether, these results support the idea that CRF1R antagonist blocked Trx-1 expression and pCREB/Trx-1 co-localization, indicating a critical role of CRF, through CRF1R, in molecular changes involved in morphine associated behaviors.
Collapse
Affiliation(s)
| | - Daymi M. Camejo
- Department of Stress Biology and Plant Pathology, CEBAS-CSIC, Murcia, Spain
| | - Pilar Almela
- Department of Pharmacology, Faculty of Medicine, University of Murcia, Murcia, Spain
- * E-mail:
| | - Ana Jiménez
- Department of Stress Biology and Plant Pathology, CEBAS-CSIC, Murcia, Spain
| | | | - Francisca Sevilla
- Department of Stress Biology and Plant Pathology, CEBAS-CSIC, Murcia, Spain
| | - María-Luisa Laorden
- Department of Pharmacology, Faculty of Medicine, University of Murcia, Murcia, Spain
| |
Collapse
|
50
|
|