1
|
Davoudi M, Azizi H, Mirnajafi-Zadeh J, Semnanian S. Decrease of inhibitory synaptic currents of locus coeruleus neurons via orexin type 1 receptors in the context of naloxone-induced morphine withdrawal. J Physiol Sci 2019; 69:281-293. [PMID: 30406600 PMCID: PMC10717061 DOI: 10.1007/s12576-018-0645-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Accepted: 10/25/2018] [Indexed: 10/27/2022]
Abstract
Acute opioid withdrawal syndrome is a series of neurological symptoms caused by the abrupt cessation of the chronic administration of opioids such as morphine. The locus coeruleus (LC) in the brain stem receives a dense projection of orexinergic fibers from the hypothalamus and is a candidate site for the expression of the somatic aspects of morphine withdrawal. Previous studies have shown that orexin-A contributes to the behavioral symptoms of naloxone-induced morphine withdrawal, partly by reducing the activity of GABAergic neurons, suggesting that orexin-A may negatively modulate fast GABAergic neurotransmission during morphine withdrawal. We used whole-cell patch-clamp recordings of LC neurons in brainstem slices to investigate the effect of orexin-A on bicuculline-sensitive GABAergic inhibitory postsynaptic currents (IPSCs) during naloxone-induced morphine withdrawal. Male Wistar rats (P14-P21) were given morphine (20 mg/kg, i.p.) daily for seven consecutive days to create dependency on the drug. The application of naloxone (1 µM) to brain slices of morphine-treated rats reduced the amplitude of evoked IPSCs (eIPSCs) as well as spontaneous IPSCs (sIPSCs) frequency but did not change sIPSCs amplitude. Orexin-A (100 nM) significantly enhanced the suppressive effect of naloxone on eIPSCs amplitude and sIPSCs frequency but had no effect on the presence of the orexin type 1 receptor (OX1R) antagonist, SB-334867. Orexin-A alone had no significant effect on eIPSCs and sIPSCs in the absence of naloxone. In summary, our results show that orexin-A, via OX1R, potentiates the suppressive effect of naloxone on GABAergic IPSCs of LC neurons in morphine-treated rats. We conclude that orexins may have a critical role in regulating GABAergic neurotransmission to LC neurons during naloxone-induced morphine withdrawal.
Collapse
Affiliation(s)
- Mahnaz Davoudi
- 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.
| | - Javad Mirnajafi-Zadeh
- 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.
| |
Collapse
|
2
|
|
3
|
Hayashida KI, Kimuram M, Eisenach JC. Blockade of α2-adrenergic or metabotropic glutamate receptors induces glutamate release in the locus coeruleus to activate descending inhibition in rats with chronic neuropathic hypersensitivity. Neurosci Lett 2018; 676:41-45. [PMID: 29627342 DOI: 10.1016/j.neulet.2018.04.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Revised: 04/03/2018] [Accepted: 04/03/2018] [Indexed: 10/17/2022]
Abstract
Locus coeruleus (LC)-spinal noradrenergic projections are important to endogenous analgesic mechanisms and can be activated by local glutamate signaling in the LC. The current study examined the local glutamatergic, GABAergic, and noradrenergic influences on glutamate release in the LC and noradrenergic descending inhibition in rats 6 weeks after spinal nerve ligation (SNL). Intra-LC injection of the α2 adrenoceptor antagonist idazoxan or the group 2 metabotropic glutamate receptor (mGluR) antagonist (RS)-α-Methyl-4-tetrazolylphenylglycine (MTPG) increased withdrawal thresholds in SNL animals and this was reversed by the blockade of α-amino-3-hydroxy-5-methyl- 4-isoxazolepropionic acid (AMPA) receptors in the LC or α2-adrenoceptors in the spinal cord, but not in normal animals. Neither blockade of GABA-A nor GABA-B receptors in the LC affected withdrawal thresholds in normal and SNL animals. Intra-LC perfusion of idazoxan increased extracellular glutamate in the LC in SNL animals but not in normal animals. Intra-LC perfusion of MTPG increased extracellular glutamate in the LC in both normal and SNL animals. These results suggest that local noradrenaline and glutamate tonically inhibit glutamate release in the LC after peripheral nerve injury and this may contribute to reduced descending inhibition in response to noxious input during chronic neuropathic pain.
Collapse
Affiliation(s)
- Ken-Ichiro Hayashida
- Department of Neurophysiology, Akita University School of Medicine, Akita, 010-8543, Japan; Pain Mechanisms Laboratory, Department of Anesthesiology, Wake Forest School of Medicine, Winston Salem, NC, 27157, USA.
| | - Masafumi Kimuram
- Pain Mechanisms Laboratory, Department of Anesthesiology, Wake Forest School of Medicine, Winston Salem, NC, 27157, USA
| | - James C Eisenach
- Pain Mechanisms Laboratory, Department of Anesthesiology, Wake Forest School of Medicine, Winston Salem, NC, 27157, USA
| |
Collapse
|
4
|
Kim DH, Kim NJ, Zhao RJ, Kim DH, Yang CH, Kim HY, Gwak YS, Jang EY, Kim JS, Lee YK, Lee HJ, Lim SC, Lee BH. Effects of acupuncture on the anxiety-like behavior induced by withdrawal from chronic morphine use. Neurosci Lett 2018; 664:38-42. [DOI: 10.1016/j.neulet.2017.11.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Revised: 11/05/2017] [Accepted: 11/06/2017] [Indexed: 11/29/2022]
|
5
|
Topkara B, Yananli HR, Sakallı E, Demirkapu MJ. Effects of Injection of Gamma-Aminobutyric Acid Agonists into the Nucleus Accumbens on Naloxone-Induced Morphine Withdrawal. Pharmacology 2017. [DOI: 10.1159/000477548] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Aims: This study was to investigate the effects of local administration of gamma-aminobutyric acid (GABA) agonists into the nucleus accumbens (NAc) on naloxone-induced morphine withdrawal symptoms. Methods: Bilateral guide cannulas were stereotaxically implanted in the shell or core regions of the NAc of Sprague-Dawley rats. After a recovery period, 3 morphine pellets, each consisting of 75 mg morphine base, were placed subcutaneously on the first and third days of the study with the rats under mild ether anaesthesia. The GABA agonists, baclofen hydrochloride or muscimol hydrobromide, were injected into the NAc, and morphine withdrawal was induced by naloxone on the fifth day. Results: Administration of baclofen to the shell or core regions of the NAc of Sprague-Dawley rats led to statistically significant decreases in both behavioural and locomotor activity parameters during the morphine withdrawal period, compared to the control group. However, there were no statistically significant changes in locomotor activity or withdrawal behavioural parameters, with the exception of wet dog shakes, between control and muscimol-treated groups. Conclusion: These findings show that GABAergic conduction in the NAc is effective on the morphine withdrawal symptoms, and that both the shell and core regions of the NAc are associated with this effect.
Collapse
|
6
|
Sukhotinsky I, Minert A, Soja P, Devor M. Mesopontine Switch for the Induction of General Anesthesia by Dedicated Neural Pathways. Anesth Analg 2016; 123:1274-1285. [DOI: 10.1213/ane.0000000000001489] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
7
|
Davoudi M, Azizi H, Mirnajafi-Zadeh J, Semnanian S. The blockade of GABAA receptors attenuates the inhibitory effect of orexin type 1 receptors antagonist on morphine withdrawal syndrome in rats. Neurosci Lett 2016; 617:201-6. [DOI: 10.1016/j.neulet.2016.02.022] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2015] [Revised: 02/09/2016] [Accepted: 02/10/2016] [Indexed: 11/25/2022]
|
8
|
McCall JG, Al-Hasani R, Siuda ER, Hong DY, Norris AJ, Ford CP, Bruchas MR. CRH Engagement of the Locus Coeruleus Noradrenergic System Mediates Stress-Induced Anxiety. Neuron 2015; 87:605-20. [PMID: 26212712 PMCID: PMC4529361 DOI: 10.1016/j.neuron.2015.07.002] [Citation(s) in RCA: 392] [Impact Index Per Article: 43.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Revised: 06/09/2015] [Accepted: 07/01/2015] [Indexed: 01/09/2023]
Abstract
The locus coeruleus noradrenergic (LC-NE) system is one of the first systems engaged following a stressful event. While numerous groups have demonstrated that LC-NE neurons are activated by many different stressors, the underlying neural circuitry and the role of this activity in generating stress-induced anxiety has not been elucidated. Using a combination of in vivo chemogenetics, optogenetics, and retrograde tracing, we determine that increased tonic activity of the LC-NE system is necessary and sufficient for stress-induced anxiety and aversion. Selective inhibition of LC-NE neurons during stress prevents subsequent anxiety-like behavior. Exogenously increasing tonic, but not phasic, activity of LC-NE neurons is alone sufficient for anxiety-like and aversive behavior. Furthermore, endogenous corticotropin-releasing hormone(+) (CRH(+)) LC inputs from the amygdala increase tonic LC activity, inducing anxiety-like behaviors. These studies position the LC-NE system as a critical mediator of acute stress-induced anxiety and offer a potential intervention for preventing stress-related affective disorders.
Collapse
Affiliation(s)
- Jordan G McCall
- Division of Basic Research, Department of Anesthesiology, Washington University School of Medicine, St. Louis, MO 63110, USA; Washington University Pain Center, Washington University School of Medicine, St. Louis, MO 63110, USA; Department of Anatomy and Neurobiology, Washington University School of Medicine, St. Louis, MO 63110, USA; Division of Biology and Biomedical Sciences, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Ream Al-Hasani
- Division of Basic Research, Department of Anesthesiology, Washington University School of Medicine, St. Louis, MO 63110, USA; Washington University Pain Center, Washington University School of Medicine, St. Louis, MO 63110, USA; Department of Anatomy and Neurobiology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Edward R Siuda
- Division of Basic Research, Department of Anesthesiology, Washington University School of Medicine, St. Louis, MO 63110, USA; Washington University Pain Center, Washington University School of Medicine, St. Louis, MO 63110, USA; Department of Anatomy and Neurobiology, Washington University School of Medicine, St. Louis, MO 63110, USA; Division of Biology and Biomedical Sciences, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Daniel Y Hong
- Division of Basic Research, Department of Anesthesiology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Aaron J Norris
- Division of Basic Research, Department of Anesthesiology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Christopher P Ford
- Department of Physiology and Biophysics, Department of Neurosciences, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
| | - Michael R Bruchas
- Division of Basic Research, Department of Anesthesiology, Washington University School of Medicine, St. Louis, MO 63110, USA; Washington University Pain Center, Washington University School of Medicine, St. Louis, MO 63110, USA; Department of Anatomy and Neurobiology, Washington University School of Medicine, St. Louis, MO 63110, USA; Division of Biology and Biomedical Sciences, Washington University School of Medicine, St. Louis, MO 63110, USA.
| |
Collapse
|
9
|
Motaghinejad M, Motevalian M, Asadi-Ghalehni M, Motaghinejad O. Attenuation of morphine withdrawal signs, blood cortisol and glucose level with forced exercise in comparison with clonidine. Adv Biomed Res 2014; 3:171. [PMID: 25250285 PMCID: PMC4166059 DOI: 10.4103/2277-9175.139181] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2013] [Accepted: 08/28/2013] [Indexed: 11/22/2022] Open
Abstract
Background: Morphine withdrawal usually results in undesired outcomes, despite partial benefits of alternative medication such as methadone, because of the lack of mental sedation during the withdrawal period, may not lead to the desired result. In this study, forced exercise by treadmill is used to manage morphine dependence in animal model. Materials and Methods: Forty adult male mice were divided into 5 groups, from which 4 groups became dependent by increasing daily doses of morphine for 6 days (20-45 mg/kg, SC). Afterwards, the animals were treated for 21 days by either of the following protocol: Positive control (dependent) received once daily 45 mg/kg of morphine sulfate (SC) for 21 day, group under treatment by clonidine (0.4 mg/kg, SC) for 21 day group under treatment by forced exercise by treadmill for 21 day, group under treatment by combination of clonidine (0.4 mg/kg, SC) and forced exercise by treadmill for 21day and the negative control group(independent) received saline injection like other groups. Each of this administration was injected at 8 AM. Finally, in the test day (day 28), all animals received a single dose of naloxone (3 mg/kg, SC) at 8 AM and then were observed for withdrawal signs, and Total Withdrawal Score (TWS) was determined as described previously. After withdrawal sign evaluation for evaluation of stress level of dependent mice, blood cortisol and glucose level were measured in non-fasting situations well. Results: This study showed that TWS significantly decreased in all treatment groups in comparison with positive control group (P < 0.001). Moreover, blood cortisol and glucose level significantly decreased in group under treatment by clonidine (0.4 mg/kg) and group under treatment by combination of clonidine (0.4 mg/kg) and forced exercise by treadmill groups in comparison with control positive (dependent) (P < 0.05). Conclusion: This study suggested that forced exercise can be useful as adjunct therapy in dependent people and can ameliorate side effects and stress situation of withdrawal syndrome periods.
Collapse
Affiliation(s)
- Majid Motaghinejad
- Department of Pharmacology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Manijeh Motevalian
- Department of Pharmacology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Majid Asadi-Ghalehni
- Department of Medical Biotechnology, School of Advanced Medical Technologies, Tehran University of Medical Sciences, Tehran, Iran
| | - Ozra Motaghinejad
- Department of Pharmacology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| |
Collapse
|
10
|
Chaijale NN, Curtis AL, Wood SK, Zhang XY, Bhatnagar S, Reyes BAS, Van Bockstaele EJ, Valentino RJ. Social stress engages opioid regulation of locus coeruleus norepinephrine neurons and induces a state of cellular and physical opiate dependence. Neuropsychopharmacology 2013; 38:1833-43. [PMID: 23660707 PMCID: PMC3746692 DOI: 10.1038/npp.2013.117] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2012] [Revised: 05/08/2013] [Accepted: 05/08/2013] [Indexed: 12/20/2022]
Abstract
Stress is implicated in diverse psychiatric disorders including substance abuse. The locus coeruleus-norepinephrine (LC-NE) system is a major stress response system that is also a point of intersection between stress neuromediators and endogenous opioids and so may be a site at which stress can influence drug-taking behaviors. As social stress is a common stressor for humans, this study characterized the enduring impact of repeated social stress on LC neuronal activity. Rats were exposed to five daily consecutive sessions of social stress using the resident-intruder model or control manipulation. LC discharge rate recorded 2 days after the last manipulation was decreased in stressed rats compared with controls. By 10 days after the last manipulation, LC rates were comparable between groups. Systemic administration of the opiate antagonist, naloxone, robustly increased LC discharge rate in a manner suggestive of opiate withdrawal, selectively in stressed rats when administered 2 or 10 days after the last manipulation. This was accompanied by behavioral signs of mild opiate withdrawal. Western blot and electron microscopic studies indicated that repeated social stress decreased corticotropin-releasing factor type 1 receptor and increased μ-opioid receptor levels in the LC. Together, the results suggest that repeated social stress engages endogenous opioid modulation of LC activity and induces signs of cellular and physical opiate dependence that endure after the stress. These cellular effects may predispose individuals with a history of repeated social stress to substance abuse behaviors.
Collapse
Affiliation(s)
- Nayla N Chaijale
- Division of Stress Neurobiology, Department of Anesthesiology, Abramson Research Center, The Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA.
| | - Andre L Curtis
- Division of Stress Neurobiology, Department of Anesthesiology, Abramson Research Center, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Susan K Wood
- Division of Stress Neurobiology, Department of Anesthesiology, Abramson Research Center, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Xiao-Yan Zhang
- Division of Stress Neurobiology, Department of Anesthesiology, Abramson Research Center, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Seema Bhatnagar
- Division of Stress Neurobiology, Department of Anesthesiology, Abramson Research Center, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Beverly AS Reyes
- Department of Neurosurgery, Thomas Jefferson University, Philadelphia, PA, USA
| | | | - Rita J Valentino
- Division of Stress Neurobiology, Department of Anesthesiology, Abramson Research Center, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
| |
Collapse
|
11
|
Lee JH, Kim HY, Jang EY, Choi SH, Han CH, Lee BH, Yang CH. Effect of acupuncture on naloxone-precipitated withdrawal syndrome in morphine-experienced rats: The mediation of GABA receptors. Neurosci Lett 2011; 504:301-5. [DOI: 10.1016/j.neulet.2011.09.052] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2011] [Revised: 08/31/2011] [Accepted: 09/23/2011] [Indexed: 11/25/2022]
|
12
|
Extracellular signal-regulated kinase activation in the amygdala mediates elevated plus maze behavior during opioid withdrawal. Behav Pharmacol 2011; 20:576-83. [PMID: 19738463 DOI: 10.1097/fbp.0b013e32832ec57e] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
This study examined whether activation of extracellular signal-regulated kinase (ERK) contributes to the increased open-arm time observed in the elevated plus maze (EPM) during opioid withdrawal. We applied SL327, a selective ERK kinase (MEK) inhibitor, to specific limbic areas and examined the effect on EPM behaviors of controls and during naloxone-precipitated morphine withdrawal. We next confirmed that ERK activation increased in limbic areas of mice undergoing naloxone-precipitated morphine withdrawal. Direct injection of SL327 into the amygdala blocked the withdrawal-induced increase in open-arm time; however, injecting SL327 into the septum had no effect. Consistent with these results, both 0.2 and 2 mg/kg naloxone increased ERK activation in the central amygdala of morphine-dependent mice. In drug-naive mice, 2 mg/kg naloxone, but not 0.2 mg/kg, increased ERK activation in the central amygdala. During withdrawal, increased ERK activation was also observed in the lateral septum. In the locus coeruleus, a significant increase was observed only in morphine-dependent mice receiving 2 mg/kg, but not 0.2 mg/kg naloxone. In conclusion, ERK activation in limbic areas is likely involved in both the aversive properties of naloxone and in the affective/emotional symptoms of opioid withdrawal, including mediating EPM behaviors.
Collapse
|
13
|
Abstract
This paper is the 31st consecutive installment of the annual review of research concerning the endogenous opioid system. It summarizes papers published during 2008 that studied the behavioral effects of molecular, pharmacological and genetic manipulation of opioid peptides, opioid receptors, opioid agonists and opioid antagonists. The particular topics that continue to be covered include the molecular-biochemical effects and neurochemical localization studies of endogenous opioids and their receptors related to behavior (Section 2), and the roles of these opioid peptides and receptors in pain and analgesia (Section 3); stress and social status (Section 4); tolerance and dependence (Section 5); learning and memory (Section 6); eating and drinking (Section 7); alcohol and drugs of abuse (Section 8); sexual activity and hormones, pregnancy, development and endocrinology (Section 9); mental illness and mood (Section 10); seizures and neurologic disorders (Section 11); electrical-related activity and neurophysiology (Section 12); general activity and locomotion (Section 13); gastrointestinal, renal and hepatic functions (Section 14); cardiovascular responses (Section 15); respiration and thermoregulation (Section 16); and immunological responses (Section 17).
Collapse
Affiliation(s)
- Richard J Bodnar
- Department of Psychology and Neuropsychology Doctoral Sub-Program, Queens College, City University of New York, 65-30 Kissena Blvd, Flushing, NY 11367, United States.
| |
Collapse
|
14
|
Núñez C, González-Cuello A, Sánchez L, Vargas ML, Milanés MV, Laorden ML. Effects of rolipram and diazepam on the adaptive changes induced by morphine withdrawal in the hypothalamic paraventricular nucleus. Eur J Pharmacol 2009; 620:1-8. [PMID: 19683523 DOI: 10.1016/j.ejphar.2009.08.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2009] [Revised: 07/14/2009] [Accepted: 08/03/2009] [Indexed: 01/23/2023]
Abstract
A role for the cyclic AMP systems in the development of morphine dependence has been previously reported. In this study we investigated whether morphine dependence was inhibited by phosphodiesterase (PDE) 4 inhibitors rolipram and diazepam. Dependence on morphine was induced by a 7-day s.c. implantation of morphine pellets. On day 8, morphine withdrawal was precipitated by an injection of naloxone. In order to determine the effect of rolipram and diazepam rats were injected with these drugs once daily for seven days as well as 30 min before of naloxone injection. When opioid withdrawal was precipitated, an enhanced noradrenaline turnover and increased level of cyclic AMP and cyclic GMP in the hypothalamic paraventricular nucleus (PVN) were observed 30 min after naloxone administration. Moreover, c-Fos expression was induced in the PVN after naloxone-precipitated morphine withdrawal. Co-administration of rolipram or diazepam with morphine during the pre-treatment period, significantly reduced the signs of withdrawal, the enhancement of noradrenaline turnover and the increase in cyclic AMP. However, these inhibitors did not modify either levels of cyclic GMP or c-Fos expression in the PVN. These findings demonstrate that co-administration of rolipram or diazepam with morphine attenuate the withdrawal syndrome and suggest that these compounds may prevent the up-regulation of the cyclic AMP pathway and the associated increase in cyclic AMP level in morphine-withdrawn rats.
Collapse
Affiliation(s)
- Cristina Núñez
- Department of Pharmacology, Faculty of Medicine, University of Murcia, Spain
| | | | | | | | | | | |
Collapse
|
15
|
Ikeda H, Kotani A, Lee J, Koshikawa N, Cools A. GABAA receptors in the mediodorsal thalamus play a crucial role in rat shell-specific acetylcholine-mediated, but not dopamine-mediated, turning behaviour. Neuroscience 2009; 159:1200-7. [DOI: 10.1016/j.neuroscience.2009.02.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2008] [Revised: 01/13/2009] [Accepted: 02/07/2009] [Indexed: 11/25/2022]
|
16
|
Mirzaii-Dizgah I, Ojaghi R, Sadeghipour-Roodsari HR, Karimian SM, Sohanaki H. Attenuation of morphine withdrawal signs by low level laser therapy in rats. Behav Brain Res 2009; 196:268-70. [DOI: 10.1016/j.bbr.2008.09.015] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2008] [Revised: 09/11/2008] [Accepted: 09/16/2008] [Indexed: 11/28/2022]
|
17
|
Riahi E, Mirzaii-Dizgah I, Karimian SM, Sadeghipour Roodsari HR, Dehpour AR. Attenuation of morphine withdrawal signs by a GABAB receptor agonist in the locus coeruleus of rats. Behav Brain Res 2009; 196:11-4. [DOI: 10.1016/j.bbr.2008.06.020] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2008] [Revised: 06/14/2008] [Accepted: 06/17/2008] [Indexed: 11/28/2022]
|