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Mao LM, Thallapureddy K, Wang JQ. Effects of propofol on presynaptic synapsin phosphorylation in the mouse brain in vivo. Brain Res 2024; 1823:148671. [PMID: 37952872 PMCID: PMC10806815 DOI: 10.1016/j.brainres.2023.148671] [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: 08/10/2023] [Revised: 10/24/2023] [Accepted: 11/07/2023] [Indexed: 11/14/2023]
Abstract
The commonly used general anesthetic propofol can enhance the γ-aminobutyric acid-mediated inhibitory synaptic transmission and depress the glutamatergic excitatory synaptic transmission to achieve general anesthesia and other outcomes. In addition to the actions at postsynaptic sites, the modulation of presynaptic activity by propofol is thought to contribute to neurophysiological effects of the anesthetic, although potential targets of propofol within presynaptic nerve terminals are incompletely studied at present. In this study, we explored the possible linkage of propofol to synapsins, a family of neuron-specific phosphoproteins which are the most abundant proteins on presynaptic vesicles, in the adult mouse brain in vivo. We found that an intraperitoneal injection of propofol at a dose that caused loss of righting reflex increased basal levels of synapsin phosphorylation at the major representative phosphorylation sites (serine 9, serine 62/67, and serine 603) in the prefrontal cortex (PFC) of male and female mice. Propofol also elevated synapsin phosphorylation at these sites in the striatum and S9 and S62/67 phosphorylation in the hippocampus, while propofol had no effect on tyrosine hydroxylase phosphorylation in striatal nerve terminals. Total synapsin protein expression in the PFC, hippocampus, and striatum was not altered by propofol. These results reveal that synapsin could be a novel substrate of propofol in the presynaptic neurotransmitter release machinery. Propofol possesses the ability to upregulate synapsin phosphorylation in broad mouse brain regions.
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Affiliation(s)
- Li-Min Mao
- Department of Biomedical Sciences, School of Medicine, University of Missouri-Kansas City, Kansas City, MO 64108, USA
| | - Khyathi Thallapureddy
- Department of Biomedical Sciences, School of Medicine, University of Missouri-Kansas City, Kansas City, MO 64108, USA
| | - John Q Wang
- Department of Biomedical Sciences, School of Medicine, University of Missouri-Kansas City, Kansas City, MO 64108, USA; Department of Anesthesiology, School of Medicine, University of Missouri-Kansas City, Kansas City, MO 64108, USA.
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Zhong T, Lin Y, Zhuge R, Lin Y, Huang B, Zeng R. Reviewing the mechanism of propofol addiction. All Life 2023. [DOI: 10.1080/26895293.2023.2174708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Affiliation(s)
- Tianhao Zhong
- The Second Clinical Medical College of Wenzhou Medical University, Wenzhou, People’s Republic of China
| | - Yuyan Lin
- The Second Clinical Medical College of Wenzhou Medical University, Wenzhou, People’s Republic of China
| | - Ruohuai Zhuge
- The Second Clinical Medical College of Wenzhou Medical University, Wenzhou, People’s Republic of China
| | - Yujie Lin
- The Second Clinical Medical College of Wenzhou Medical University, Wenzhou, People’s Republic of China
| | - Bingwu Huang
- The Second Clinical Medical College of Wenzhou Medical University, Wenzhou, People’s Republic of China
- Department of Anesthesiology and Perioperative Medicine, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, Wenzhou, People’s Republic of China
- Key Laboratory of Anesthesiology of Zhejiang Province, Wenzhou Medical University, Wenzhou, People’s Republic of China
| | - Ruifeng Zeng
- The Second Clinical Medical College of Wenzhou Medical University, Wenzhou, People’s Republic of China
- Department of Anesthesiology and Perioperative Medicine, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, Wenzhou, People’s Republic of China
- Key Laboratory of Anesthesiology of Zhejiang Province, Wenzhou Medical University, Wenzhou, People’s Republic of China
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Deng L, Wu L, Gao R, Xu X, Chen C, Liu J. Non-Opioid Anesthetics Addiction: A Review of Current Situation and Mechanism. Brain Sci 2023; 13:1259. [PMID: 37759860 PMCID: PMC10526861 DOI: 10.3390/brainsci13091259] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2023] [Revised: 08/15/2023] [Accepted: 08/26/2023] [Indexed: 09/29/2023] Open
Abstract
Drug addiction is one of the major worldwide health problems, which will have serious adverse consequences on human health and significantly burden the social economy and public health. Drug abuse is more common in anesthesiologists than in the general population because of their easier access to controlled substances. Although opioids have been generally considered the most commonly abused drugs among anesthesiologists and nurse anesthetists, the abuse of non-opioid anesthetics has been increasingly severe in recent years. The purpose of this review is to provide an overview of the clinical situation and potential molecular mechanisms of non-opioid anesthetics addiction. This review incorporates the clinical and biomolecular evidence supporting the abuse potential of non-opioid anesthetics and the foreseeable mechanism causing the non-opioid anesthetics addiction phenotypes, promoting a better understanding of its pathogenesis and helping to find effective preventive and curative strategies.
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Affiliation(s)
- Liyun Deng
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu 610041, China; (L.D.); (L.W.); (R.G.); (X.X.); (J.L.)
- The Research Units of West China (2018RU012)-Chinese Academy of Medical Sciences, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Lining Wu
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu 610041, China; (L.D.); (L.W.); (R.G.); (X.X.); (J.L.)
- The Research Units of West China (2018RU012)-Chinese Academy of Medical Sciences, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Rui Gao
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu 610041, China; (L.D.); (L.W.); (R.G.); (X.X.); (J.L.)
- The Research Units of West China (2018RU012)-Chinese Academy of Medical Sciences, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Xiaolin Xu
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu 610041, China; (L.D.); (L.W.); (R.G.); (X.X.); (J.L.)
- The Research Units of West China (2018RU012)-Chinese Academy of Medical Sciences, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Chan Chen
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu 610041, China; (L.D.); (L.W.); (R.G.); (X.X.); (J.L.)
- The Research Units of West China (2018RU012)-Chinese Academy of Medical Sciences, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Jin Liu
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu 610041, China; (L.D.); (L.W.); (R.G.); (X.X.); (J.L.)
- The Research Units of West China (2018RU012)-Chinese Academy of Medical Sciences, West China Hospital, Sichuan University, Chengdu 610041, China
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Miao HC, Liu M, Wu F, Li HB. Expression changes of c-Fos and D1R/p-ERK1/2 signal pathways in nucleus accumbens of rats after ketamine abuse. Biochem Biophys Res Commun 2022; 629:183-188. [PMID: 36152451 DOI: 10.1016/j.bbrc.2022.08.091] [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: 07/20/2022] [Revised: 08/05/2022] [Accepted: 08/30/2022] [Indexed: 11/19/2022]
Abstract
Ketamine is a commonly used dissociative anesthetic in clinical applications. However, the abuse potential has posted limits to its use and the mechanism remains to be studied. We aimed to investigate the changes of dopamine D1 receptors (D1R), phosphorylation of extracellular-regulated protein kinase 1/2 (p-ERK1/2), and c-Fos expression in the nucleus accumbens (NAc) of ketamine abuse rats. Ketamine induced severe anxiety in rats, as shown by an open field test. Nissl staining demonstrated clearly different morphologies between neurons of ketamine abuse rats and normal rats. The molecular expression changes were examined using immunohistochemistry assay and western blotting. D1R, p-ERK1/2, and c-Fos were significantly highly-expressed in NAc during ketamine exposure and were decreased by D1R antagonist SCH23390 and MAPK kinases inhibitor U0126. Taken together, the results suggest that ketamine abuse may induce the overexpression of c-Fos in NAc by up-regulating the expression of D1R and p-ERK1/2.
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Affiliation(s)
- Hua-Chun Miao
- Department of Human Anatomy, School of Basic Medical Sciences, Wannan Medical College, 22 West Wenchang Road, Wuhu, 241002, China
| | - Min Liu
- Department of Human Anatomy, School of Basic Medical Sciences, Wannan Medical College, 22 West Wenchang Road, Wuhu, 241002, China
| | - Feng Wu
- Department of Human Anatomy, School of Basic Medical Sciences, Wannan Medical College, 22 West Wenchang Road, Wuhu, 241002, China
| | - Huai-Bin Li
- Department of Human Anatomy, School of Basic Medical Sciences, Wannan Medical College, 22 West Wenchang Road, Wuhu, 241002, China.
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Wang B, Yang X, Zhou W, Zhu H, Lian Q, Yang J. Involvement of the ERK signaling pathways in the NAc in propofol-seeking behavior induced by cues in rats. Pharmacol Biochem Behav 2022; 219:173447. [PMID: 35970339 DOI: 10.1016/j.pbb.2022.173447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 07/08/2022] [Accepted: 08/10/2022] [Indexed: 11/21/2022]
Abstract
Propofol, an intravenous short-acting anesthetic, has the potential to induce craving and relapse. Accumulated evidence demonstrates that extracellular signal-regulated kinase (ERK) plays an essential role in drug reward and relapse. In the previous study, we demonstrated that the ERK signaling pathways in the Nucleus accumbens (NAc) were involved in propofol reward. However, the role of the ERK signaling pathways in propofol relapse is still unknown. We first trained rats to self-administer propofol for 14 days, then evaluated propofol-seeking behavior of relapse induced by a contextual cues and conditioned cues after 14-day withdrawal. Meanwhile, MEK inhibitor U0126 was used to investigate the role of the ERK signal pathways in propofol-seeking behavior induced by contextual cues and conditioned cues. Results showed that the number of active nose-poke responses in propofol-seeking behavior induced by conditioned cues was much higher compared to contextual cues. U0126 (5.0 μg/side, Lateral Ventricle (LV)) pretreatment significantly decreased the active responses induced by conditioned cues, which was associated with a large decline in the expression of p-ERK in the NAc. Moreover, microinjectionofU0126 (2.0 μg/side) in the NAc also attenuated the active responses of propofol-seeking behavior. Additionally, microinjections with U0126 in the LV (5.0 μg/side) or NAc (2.0 μg/side) both failed to alter sucrose self-administration or locomotor activity of rats. Therefore, we conclude that ERK phosphorylation in the NAc maybe involved in propofol relapse.
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Dong Z, Zhang G, Xiang S, Jiang C, Chen Z, Li Y, Huang B, Zhou W, Lian Q, Wu B. The Antagonism of Corticotropin-Releasing Factor Receptor-1 in Brain Suppress Stress-Induced Propofol Self-Administration in Rats. Front Behav Neurosci 2021; 15:775209. [PMID: 34924971 PMCID: PMC8674615 DOI: 10.3389/fnbeh.2021.775209] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Accepted: 10/22/2021] [Indexed: 11/22/2022] Open
Abstract
Propofol addiction has been detected in humans and rats, which may be facilitated by stress. Corticotropin-releasing factor acts through the corticotropin-releasing factor (CRF) receptor-1 (CRF1R) and CRF2 receptor-2 (CRF2R) and is a crucial candidate target for the interaction between stress and drug abuse, but its role on propofol addiction remains unknown. Tail clip stressful stimulation was performed in rats to test the stress on the establishment of the propofol self-administration behavioral model. Thereafter, the rats were pretreated before the testing session at the bilateral lateral ventricle with one of the doses of antalarmin (CRF1R antagonist, 100–500 ng/site), antisauvagine 30 (CRF2R antagonist, 100–500 ng/site), and RU486 (glucocorticoid receptor antagonist, 100–500 ng/site) or vehicle. The dopamine D1 receptor (D1R) in the nucleus accumbens (NAc) was detected to explore the underlying molecular mechanism. The sucrose self-administration establishment and maintenance, and locomotor activities were also examined to determine the specificity. We found that the establishment of propofol self-administration was promoted in the tail clip treated group (the stress group), which was inhibited by antalarmin at the dose of 100–500 ng/site but was not by antisauvagine 30 or RU486. Accordingly, the expression of D1R in the NAc was attenuated by antalarmin, dose-dependently. Moreover, pretreatments fail to change sucrose self-administration behavior or locomotor activities. This study supports the role of CRF1R in the brain in mediating the central reward processing through D1R in the NAc and provided a possibility that CRF1R antagonist may be a new therapeutic approach for the treatment of propofol addiction.
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Affiliation(s)
- Zhanglei Dong
- Department of Anesthesiology, Perioperative and Pain Medicine, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Gaolong Zhang
- Department of Anesthesiology, Perioperative and Pain Medicine, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Saiqiong Xiang
- Department of Anesthesiology, Perioperative and Pain Medicine, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Chenchen Jiang
- Clinical Research Unit, The Second Affiliated and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Zhichuan Chen
- Department of Anesthesiology, Perioperative and Pain Medicine, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China.,Medical School, Institution of Reproductive Medicine, Nantong University, Nantong, China
| | - Yan Li
- Department of Neurology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Bingwu Huang
- Department of Anesthesiology, Perioperative and Pain Medicine, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Wenhua Zhou
- Zhejiang Provincial Key Lab of Addiction, Ningbo Kangning Hospital, School of Medicine, Ningbo Universtiy, Ningbo, China
| | - Qingquan Lian
- Department of Anesthesiology, Perioperative and Pain Medicine, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Binbin Wu
- Department of Anesthesiology, Perioperative and Pain Medicine, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
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Dong Z, Huang B, Jiang C, Chen J, Lin H, Lian Q, Wu B. The Adenosine A2A Receptor Activation in Nucleus Accumbens Suppress Cue-Induced Reinstatement of Propofol Self-administration in Rats. Neurochem Res 2021; 46:1081-1091. [PMID: 33616808 PMCID: PMC8053194 DOI: 10.1007/s11064-021-03238-9] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 12/30/2020] [Accepted: 01/06/2021] [Indexed: 01/04/2023]
Abstract
Propofol has shown strong addictive properties in rats and humans. Adenosine A2A receptors (A2AR) in the nucleus accumbens (NAc) modulate dopamine signal and addictive behaviors such as cocaine- and amphetamine-induced self-administration. However, whether A2AR can modulate propofol addiction remains unknown. AAV-shA2AR was intra-NAc injected 3 weeks before the propofol self-administration training to test the impacts of NAc A2AR on establishing the self-administration model with fixed ratio 1 (FR1) schedule. Thereafter, the rats were withdrawal from propofol for 14 days and tested cue-induced reinstatement of propofol seeking behavior on day 15. The propofol withdrawal rats received one of the doses of CGS21680 (A2AR agonist, 2.5-10.0 ng/site), MSX-3 (A2AR antagonist, 5.0-20.0 μg/site) or eticlopride (D2 receptor (D2R) antagonist, 0.75-3.0 μg/site) or vehicle via intra-NAc injection before relapse behavior test. The numbers of active and inactive nose-poke response were recorded. Focal knockdown A2AR by shA2AR did not affect the acquisition of propofol self-administration behavior, but enhance cue-induced reinstatement of propofol self-administration compared with the AAV-shCTRLgroup. Pharmacological activation of the A2AR by CGS21680 (≥ 5.0 ng/site) attenuated cue-induced reinstatement of propofol self-administration behavior. Similarly, pharmacological blockade of D2R by eticlopride (0.75-3.0 μg/site) attenuated propofol seeking behavior. These effects were reversed by the administration of MSX-3 (5.0-20.0 μg/site). The A2AR- and D2R-mediated effects on propofol relapse were not confounded by the learning process, and motor activity as the sucrose self-administration and locomotor activity were not affected by all the treatments. This study provides genetic and pharmacological evidence that NAc A2AR activation suppresses cue-induced propofol relapse in rats, possibly by interacting with D2R.
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Affiliation(s)
- Zhanglei Dong
- Department of Anesthesiology, Perioperative and Pain Medicine, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, 109 Xueyuan West Road, Wenzhou, 325027, Zhejiang, China
| | - Bingwu Huang
- Department of Anesthesiology, Perioperative and Pain Medicine, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, 109 Xueyuan West Road, Wenzhou, 325027, Zhejiang, China
| | - Chenchen Jiang
- Clinical Research Unit, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Jiangfan Chen
- Molecular Neuropharmacology Laboratory, Wenzhou Medical University, Wenzhou, China
| | - Han Lin
- Department of Anesthesiology, Perioperative and Pain Medicine, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, 109 Xueyuan West Road, Wenzhou, 325027, Zhejiang, China
| | - Qingquan Lian
- Department of Anesthesiology, Perioperative and Pain Medicine, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, 109 Xueyuan West Road, Wenzhou, 325027, Zhejiang, China.
| | - Binbin Wu
- Department of Anesthesiology, Perioperative and Pain Medicine, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, 109 Xueyuan West Road, Wenzhou, 325027, Zhejiang, China.
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Chen H, Xu D, Zhang Y, Yan Y, Liu J, Liu C, Shen W, Yu T, Liu J. Neurons in the Locus Coeruleus Modulate the Hedonic Effects of Sub-Anesthetic Dose of Propofol. Front Neurosci 2021; 15:636901. [PMID: 33767609 PMCID: PMC7985178 DOI: 10.3389/fnins.2021.636901] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Accepted: 01/28/2021] [Indexed: 02/05/2023] Open
Abstract
Propofol is a worldwide-used intravenous general anesthetic with ideal effects, but hedonic effects of propofol have been reported and cause addictive issue. There is little known about the neurobiological mechanism of hedonic effects of propofol. Increasing researches have shown that the dopaminergic nervous system of the ventral tegmental area (VTA) and the noradrenergic system of locus coeruleus (LC) play a crucial role in hedonic experiences, which are putative sites for mediating the hedonic effects of propofol. In the present study, rat hedonic response scale and place conditioning paradigm were employed to examine the euphoric effects of propofol. In vivo GCaMP-based (AVV-hSyn-GCaMP6s) fiber photometry calcium imaging was used to monitor the real-time neuronal activity in VTA and LC area in rats exhibiting propofol-induced euphoric behaviors. Then DREADDs (designer receptors exclusively activated by designer drugs) modulation using rAAV-hSyn-hM4D(Gi)-EGFP was performed to confirm the neuronal substrate that mediates the euphoric effects of propofol. The score of hedonic facial responses was significantly increased in the 4 mg/kg group compared with that of the 0 mg/kg group. The locomotor activity in the propofol-paired compartment was significantly increased at the 4 mg/kg dose compared with that of the saline-paired group. When compared with the 0 mg/kg group, the place preference increased in the 4 mg/kg group. Administration of 4 mg/kg of propofol triggers reliable increases in GcaMP fluorescence. However, in the VTA GcaMP-expressing rats, administration of 4 mg/kg of propofol did not induce any change of GcaMP signals. The facial score and the place preference, which increased by 4 mg/kg propofol were abolished by chemogenetic inhibition of the neuronal activity in the LC area. Our results suggest that LC noradrenergic neurons, not VTA dopaminergic neurons, are directly involved in the hedonic effects of sub-anesthetic dose of propofol.
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Affiliation(s)
- Hui Chen
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, China
| | - Dan Xu
- Guizhou Key Laboratory of Anesthesia and Organ Protection, Zunyi Medical University, Guizhou, China
| | - Yu Zhang
- Guizhou Key Laboratory of Anesthesia and Organ Protection, Zunyi Medical University, Guizhou, China
| | - Yan Yan
- Guizhou Key Laboratory of Anesthesia and Organ Protection, Zunyi Medical University, Guizhou, China
| | - JunXiao Liu
- Guizhou Key Laboratory of Anesthesia and Organ Protection, Zunyi Medical University, Guizhou, China
| | - ChengXi Liu
- Guizhou Key Laboratory of Anesthesia and Organ Protection, Zunyi Medical University, Guizhou, China
| | - Wei Shen
- School of Life Sciences and Technology, ShanghaiTech University, Shanghai, China
| | - Tian Yu
- Guizhou Key Laboratory of Anesthesia and Organ Protection, Zunyi Medical University, Guizhou, China
| | - Jin Liu
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, China
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Uskur T, Şenöz AÖ, Çevreli B, Barlas A, Uzbay T. Propofol but not dexmedetomidine produce locomotor sensitization via nitric oxide in rats. Psychopharmacology (Berl) 2021; 238:569-577. [PMID: 33169201 DOI: 10.1007/s00213-020-05707-5] [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: 09/08/2020] [Accepted: 11/04/2020] [Indexed: 11/24/2022]
Abstract
RATIONALE The abused potential of some anesthetics has been debated. Measurement of locomotor sensitization is a better way to detect the neurobehavioral plasticity of addiction. OBJECTIVES The present study aims to explore whether propofol and dexmedetomidine are capable of inducing locomotor sensitization. METHODS Male Wistar rats (250-300 g) were the subjects (n = 8 for each group). Propofol (20 and 40 mg/kg) and dexmedetomidine (2.5-20 μg/kg) or saline were injected to rats intraperitoneally (IP), and their locomotor activities were recorded for 15 min. Consequently, L-NAME (30 and 60 mg/kg)-a nitric oxide (NO) inhibitory agent-was injected to rats 30 min before propofol (40 mg/kg) or saline injections, and the locomotor activity was recorded. The process was carried out for 13 days, with 7 sessions applied every other day. RESULTS Dexmedetomidine did not produce any significant locomotor sensitization. While propofol (20 mg/kg) produced a significant locomotor sensitization in the last treatment session (day 13), at the higher dose, it prompted a significant locomotor sensitization from the 3rd treatment session. L-NAME blocked propofol-induced locomotor hyperactivity and sensitization significantly without producing any noteworthy changes on the locomotor activity during the testing period of 13 days when administered alone. CONCLUSIONS Our results suggest that propofol but not dexmedetomidine produced a significant locomotor sensitization via central nitrergic system. Dexmedetomidine may have a lesser psychostimulant type addictive potential than propofol. Sensitization development by propofol implies that this drug might be effective on the neuroadaptive processes associated with a stimulant type of dependence.
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Affiliation(s)
- Tuğçe Uskur
- Faculty of Medicine, Department of Medical Pharmacology, Beykent University, Istanbul, Turkey
| | - Ayşe Özçetin Şenöz
- Neuropsychopharmacology Application and Research Center (NPFUAM), Üsküdar University, Istanbul, Turkey
| | - Burcu Çevreli
- Neuropsychopharmacology Application and Research Center (NPFUAM), Üsküdar University, Istanbul, Turkey
| | - Aydın Barlas
- School of Medicine, Department of Pharmacology, Altınbaş University, İstanbul, Turkey
| | - Tayfun Uzbay
- Neuropsychopharmacology Application and Research Center (NPFUAM), Üsküdar University, Istanbul, Turkey.
- Faculty of Medicine, Department of Medical Pharmacology, Üsküdar University, İstanbul, Turkey.
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Abstract
BACKGROUND Propofol is among the most frequently used anesthetic agents, and it has the potential for abuse. The N-methyl-D-aspartate (NMDA) receptors are key mediators neural plasticity, neuronal development, addiction, and neurodegeneration. In the present study, we explored the role of these receptors in the context of rat propofol self-administration. METHODS Sprague-Dawley Rats were trained to self-administer propofol (1.7 mg/kg/infusion) using a fixed-ratio (FR) schedule over the course of 14 sessions (3 h/day). After training, rats were intraperitoneally administered the non-competitive NDMA receptor antagonist MK-801, followed 10 min later by a propofol self-administration session. RESULTS After training, rats successfully underwent acquisition of propofol self-administration, as evidenced by a significant and stable rise in the number of active nose-pokes resulting in propofol administration relative to the number of control inactive nose-pokes (P < 0.01). As compared to control rats, rats that had been injected with 0.2 mg/kg MK-801 exhibited a significantly greater number of propofol infusions (F (3, 28) = 4.372, P < 0.01), whereas infusions were comparable in the groups administered 0.1 mg/kg and 0.4 mg/kg of this compound. In addition, MK-801 failed to alter the numbers of active (F (3, 28) = 1.353, P > 0.05) or inactive (F (3, 28) = 0.047, P > 0.05) responses in these study groups. Animals administered 0.4 mg/kg MK-801 exhibited significantly fewer infusions than animals administered 0.2 mg/kg MK-801 (P = 0.006, P < 0.01). In contrast, however, animals in the 0.4 mg/kg MK-801 group displayed a significant reduction in the number of active nose-poke responses (F (3, 20) = 20.8673, P < 0.01) and the number of sucrose pellets (F (3, 20) = 23.77, P < 0.01), while their locomotor activity was increased (F (3, 20) = 22.812, P < 0.01). CONCLUSION These findings indicate that NMDA receptors may play a role in regulating rat self-administration of propofol.
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Affiliation(s)
- Bei-Ping Chen
- Department of Anesthesiology, Second Affiliated Hospital and Institute of Neuroendocrinology, Wenzhou Medical University, 109 Xueyuan Western Road, Wenzhou City, 325000, Zhejiang Province, China
- Department of Anesthesiology, First Affiliated Hospital of Wenzhou Medical University, Shangcai village, Nanbaixiang town, Ouhai District, Wenzhou City, 325000, Zhejiang Province, China
| | - Xi-Xi Huang
- Department of Anesthesiology, Second Affiliated Hospital and Institute of Neuroendocrinology, Wenzhou Medical University, 109 Xueyuan Western Road, Wenzhou City, 325000, Zhejiang Province, China
| | - Dong-Mei Dong
- Department of Anesthesiology, First Affiliated Hospital of Wenzhou Medical University, Shangcai village, Nanbaixiang town, Ouhai District, Wenzhou City, 325000, Zhejiang Province, China
| | - Hui Wu
- Department of Anesthesiology, First Affiliated Hospital of Wenzhou Medical University, Shangcai village, Nanbaixiang town, Ouhai District, Wenzhou City, 325000, Zhejiang Province, China
| | - Tian-Qi Zhu
- Department of Anesthesiology, First Affiliated Hospital of Wenzhou Medical University, Shangcai village, Nanbaixiang town, Ouhai District, Wenzhou City, 325000, Zhejiang Province, China
| | - Ben-Fu Wang
- Department of Anesthesiology, Second Affiliated Hospital and Institute of Neuroendocrinology, Wenzhou Medical University, 109 Xueyuan Western Road, Wenzhou City, 325000, Zhejiang Province, China.
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Liu Q, Du G, Xiao R, Liu Y, Cao K, Du X, Tang S, Huang W, Wang X. Injection of D1 receptor antagonist SCH23390 into the periaqueductal gray attenuates morphine withdrawal symptoms in rats. Neurosci Lett 2020; 714:134502. [DOI: 10.1016/j.neulet.2019.134502] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Revised: 08/30/2019] [Accepted: 09/16/2019] [Indexed: 10/25/2022]
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Wang Y, Ge F, Li X, Ni C, Wu K, Zheng W, Chen Y, Lian Q, Ge RS. Propofol Inhibits Androgen Production in Rat Immature Leydig Cells. Front Pharmacol 2019; 10:760. [PMID: 31333471 PMCID: PMC6624235 DOI: 10.3389/fphar.2019.00760] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Accepted: 06/12/2019] [Indexed: 12/23/2022] Open
Abstract
Background: Propofol is a widely used anesthetic. Whether propofol inhibits androgen production by rat Leydig cells and the underlying mechanism remains unclear. The objective of the current study was to examine the effects of propofol exposure to rat primary immature Leydig cells and to define propofol-induced inhibition of steroidogenic enzymes in both rat and human testes in vitro. Methods: Immature Leydig cells were purified from 35-day-old male Sprague–Dawley rats and were exposed to propofol for 3 h. The androgen production by Leydig cells under basal, luteinizing hormone, 8bromo-cAMP, and steroid-substrate stimulated conditions and gene expression of Leydig cells after exposure to propofol were measured. Immature Leydig cells were treated with propofol for 3 h and switched to propofol-free medium for additional 3 and 9 h to test whether propofol-induced inhibition is reversible. 3H-Steroids were used to evaluate the direct action of propofol on cytochrome P450 cholesterol side chain cleavage (CYP11A1), 3β-hydroxysteroid dehydrogenase (HSD3B), cytochrome P450 17α-hydroxylase/17,20-lyase (CYP17A1), and 17β-hydroxysteroid dehydrogenase 3 (HSD17B3) activities in rat and human testes in vitro. Results: Propofol significantly lowered luteinizing hormone and 8bromo-cAMP stimulated androgen production by Leydig cells after 3-h exposure. Further investigation showed that propofol down-regulated the expression of Cyp11a1 and Cyp17a1 and their proteins at 5 and 50 µM, although it up-regulated Lhcgr expression at 50 µM. Propofol significantly suppressed phosphorylation of ERK1/2 and induced ROS production in immature Leydig cells at 5 and 50 µM. Propofol significantly induced apoptosis of immature Leydig cells at 50 µM. Propofol specifically inhibited rat and human testis HSD3B activities in vitro. The half maximal inhibitory concentrations of propofol for rat and human HSD3B enzymes were 1.011 ± 0.065 and 3.498 ± 0.067 µM, respectively. The mode of action of propofol of inhibiting HSD3B was competitive when pregnenolone was added. At 50 µM, propofol did not directly inhibit rat and human testis CYP11A1, CYP17A1, and HSD17B3 activities in vitro. Conclusion: Propofol inhibits androgen production via both directly inhibiting HSD3B activity and down-regulating Cyp11a1 and Cyp17a1 expression in Leydig cells. Suppression of steroidogenic enzymes is presumably associated with the lower production of androgen by Leydig cells after propofol treatment. However, propofol-induced inhibition on androgen production is reversible.
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Affiliation(s)
- Yiyan Wang
- Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou Medical University, Wenzhou, China
| | - Fei Ge
- Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou Medical University, Wenzhou, China
| | - Xiaoheng Li
- Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou Medical University, Wenzhou, China
| | - Chaobo Ni
- Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou Medical University, Wenzhou, China
| | - Keyang Wu
- Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou Medical University, Wenzhou, China
| | - Wenwen Zheng
- Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou Medical University, Wenzhou, China
| | - Yong Chen
- Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou Medical University, Wenzhou, China
| | - Qingquan Lian
- Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou Medical University, Wenzhou, China
| | - Ren-Shan Ge
- Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou Medical University, Wenzhou, China
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Wu F, Ding J, Li HB, Miao HC, Bao R, Yang S. Effects of Electroacupuncture on Expression of D1 Receptor (D1R), Phosphorylation of Extracellular-Regulated Protein Kinase 1/2 (p-ERK1/2), and c-Fos in the Insular Cortex of Ketamine-Addicted Rats. Med Sci Monit Basic Res 2019; 25:26-32. [PMID: 30700692 PMCID: PMC6369650 DOI: 10.12659/msmbr.913285] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND The aim of this study was to investigate the effects of electroacupuncture (EA) on expression of the D1 receptor (D1R), phosphorylation of extracellular-regulated protein kinase 1/2 (p-ERK1/2) and c-Fos in the insular cortex (IC) of ketamine-addicted rats. MATERIAL AND METHODS Sprague-Dawley rats were randomly divided into 7 groups: the normal group, the normal saline (NS) group, the ketamine (Ket) group, the U0126+Ket group, the SCH23390+Ket group, the Ket+acupoints EA (EA1) group, and the Ket+ non-acupoints EA (EA2) group. We used immunohistochemistry to detect the expression of D1R, p-ERK1/2, and c-Fos. We also used Nissl staining techniques to study the morphology of IC neurons. RESULTS Our study demonstrated that the ketamine group had sparsely distributed neurons, large intracellular vacuoles, nuclei shift, and unclear nucleolus. The number of Nissl-positive (neuronal) cells in the ketamine group were decreased than in the normal group. Our results also indicated that there was significantly lower expression of D1R, p-ERK1/2, and c-Fos in the IC of the U0126+Ket group, SCH23390+Ket group, and Ket+EA1 group as compared with that of the Ket group. CONCLUSIONS Ketamine addiction induces c-Fos overexpression in the IC by increasing the expression of D1R and p-ERK1/2. Acupoints EA downregulate D1R and p-ERK1/2 by reducing the overexpression of c-Fos.
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Affiliation(s)
- Feng Wu
- Department of Anatomy, Wannan Medical College, Wuhu, Anhui, China (mainland)
| | - Jian Ding
- Department of Anatomy, Wannan Medical College, Wuhu, Anhui, China (mainland)
| | - Huai-Bin Li
- Department of Anatomy, Wannan Medical College, Wuhu, Anhui, China (mainland)
| | - Hua-Chun Miao
- Department of Anatomy, Wannan Medical College, Wuhu, Anhui, China (mainland)
| | - Rui Bao
- Department of Anatomy, Wannan Medical College, Wuhu, Anhui, China (mainland)
| | - Shan Yang
- Department of Anatomy, Wannan Medical College, Wuhu, Anhui, China (mainland)
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Abstract
Drug addiction is a chronic, relapsing brain disorder. Multiple neural networks in the brain including the reward system (e.g., the mesocorticolimbic system), the anti-reward/stress system (e.g., the extended amygdala), and the central immune system, are involved in the development of drug addiction and relapse after withdrawal from drugs of abuse. Preclinical and clinical studies have demonstrated that it is promising to control drug addiction by pharmacologically targeting the addiction-related systems in the brain. Here we review the pharmacological targets within the dopamine system, glutamate system, trace amine system, anti-reward system, and central immune system, which are of clinical interests. Furthermore, we discuss other potential therapies, e.g., brain stimulation, behavioral treatments, and therapeutic gene modulation, which could be effective to treat drug addiction. We conclude that, although drug addiction is a complex disorder that involves complicated neural mechanisms and psychological processes, this mental disorder is treatable and may be curable by therapies such as gene modulation in the future.
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Zhu W, Zhang W, Li J, Ding Z, Huang Y, Lu L. The abuse of anesthetic propofol: associated with cognitive impairment. Sci China Life Sci 2018; 61:1428-31. [PMID: 30367344 DOI: 10.1007/s11427-018-9401-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Accepted: 09/25/2018] [Indexed: 10/28/2022]
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Li Y, Xu J, Xu Y, Zhao XY, Liu Y, Wang J, Wang GM, Lv YT, Tang QY, Zhang Z. Regulatory Effect of General Anesthetics on Activity of Potassium Channels. Neurosci Bull 2018; 34:887-900. [PMID: 29948841 DOI: 10.1007/s12264-018-0239-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Accepted: 04/12/2018] [Indexed: 12/19/2022] Open
Abstract
General anesthesia is an unconscious state induced by anesthetics for surgery. The molecular targets and cellular mechanisms of general anesthetics in the mammalian nervous system have been investigated during past decades. In recent years, K+ channels have been identified as important targets of both volatile and intravenous anesthetics. This review covers achievements that have been made both on the regulatory effect of general anesthetics on the activity of K+ channels and their underlying mechanisms. Advances in research on the modulation of K+ channels by general anesthetics are summarized and categorized according to four large K+ channel families based on their amino-acid sequence homology. In addition, research achievements on the roles of K+ channels in general anesthesia in vivo, especially with regard to studies using mice with K+ channel knockout, are particularly emphasized.
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Dinis-Oliveira RJ. Metabolic Profiles of Propofol and Fospropofol: Clinical and Forensic Interpretative Aspects. Biomed Res Int 2018; 2018:6852857. [PMID: 29992157 DOI: 10.1155/2018/6852857] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Revised: 03/27/2018] [Accepted: 04/15/2018] [Indexed: 02/08/2023]
Abstract
Propofol is an intravenous short-acting anesthetic widely used to induce and maintain general anesthesia and to provide procedural sedation. The potential for propofol dependency and abuse has been recognized, and several cases of accidental overdose and suicide have emerged, mostly among the health professionals. Different studies have demonstrated an unpredictable interindividual variability of propofol pharmacokinetics and pharmacodynamics with forensic and clinical adverse relevant outcomes (e.g., pronounced respiratory and cardiac depression), namely, due to polymorphisms in the UDP-glucuronosyltransferase and cytochrome P450 isoforms and drugs administered concurrently. In this work the pharmacokinetics of propofol and fospropofol with particular focus on metabolic pathways is fully reviewed. It is concluded that knowing the metabolism of propofol may lead to the development of new clues to help further toxicological and clinical interpretations and to reduce serious adverse reactions such as respiratory failure, metabolic acidosis, rhabdomyolysis, cardiac bradyarrhythmias, hypotension and myocardial failure, anaphylaxis, hypertriglyceridemia, renal failure, hepatomegaly, hepatic steatosis, acute pancreatitis, abuse, and death. Particularly, further studies aiming to characterize polymorphic enzymes involved in the metabolic pathway, the development of additional routine forensic toxicological analysis, and the relatively new field of ‘‘omics” technology, namely, metabolomics, can offer more in explaining the unpredictable interindividual variability.
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Ni RJ, Huang ZH, Shu YM, Wang Y, Li T, Zhou JN. Atlas of the Striatum and Globus Pallidus in the Tree Shrew: Comparison with Rat and Mouse. Neurosci Bull 2018; 34:405-18. [PMID: 29508249 DOI: 10.1007/s12264-018-0212-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2017] [Accepted: 11/04/2017] [Indexed: 02/05/2023] Open
Abstract
The striatum and globus pallidus are principal nuclei of the basal ganglia. Nissl- and acetylcholinesterase-stained sections of the tree shrew brain showed the neuroanatomical features of the caudate nucleus (Cd), internal capsule (ic), putamen (Pu), accumbens, internal globus pallidus, and external globus pallidus. The ic separated the dorsal striatum into the Cd and Pu in the tree shrew, but not in rats and mice. In addition, computer-based 3D images allowed a better understanding of the position and orientation of these structures. These data provided a large-scale atlas of the striatum and globus pallidus in the coronal, sagittal, and horizontal planes, the first detailed distribution of parvalbumin-immunoreactive cells in the tree shrew, and the differences in morphological characteristics and density of parvalbumin-immunoreactive neurons between tree shrew and rat. Our findings support the tree shrew as a potential model for human striatal disorders.
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Xiong M, Shiwalkar N, Reddy K, Shin P, Bekker A. Neurobiology of Propofol Addiction and Supportive Evidence: What Is the New Development? Brain Sci 2018; 8:brainsci8020036. [PMID: 29470436 PMCID: PMC5836055 DOI: 10.3390/brainsci8020036] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Revised: 02/14/2018] [Accepted: 02/18/2018] [Indexed: 12/21/2022] Open
Abstract
Propofol is a short-acting intravenous anesthetic agent suitable for induction and maintenance of general anesthesia as well as for procedural and intensive care unit sedation. As such it has become an unparalleled anesthetic agent of choice in many institutional and office practices. However, in addition to its idealistic properties as an anesthetic agent, there is accumulating evidence suggesting its potential for abuse. Clinical and experimental evidence has revealed that not only does propofol have the potential to be abused, but also that addiction to propofol shows a high mortality rate. Based on this evidence, different researchers have shown interest in determining the probability of propofol to be an addictive agent by comparing it with other drugs of abuse and depicting a functional similitude that involves the mesocorticolimbic pathway of addiction. In light of this, the Drug Enforcement Agency and the American Society of Anesthesiologists have put forth certain safety recommendations for the use of propofol. Despite this, the abuse potential of propofol has been challenged at different levels and therefore the preeminent focus will be to further validate the linkage from medicinal and occasional use of propofol to its addiction, as well as to explore the cellular and molecular targets involved in establishing this linkage, so as to curb the harm arising out of it. This review incorporates the clinical and biomolecular evidence supporting the abuse potential of propofol and brings forth the promising targets and the foreseeable mechanism causing the propofol addiction phenotypes, which can be called upon for future developments in this field.
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Affiliation(s)
- Ming Xiong
- Department of Anesthesiology, New Jersey Medical School, Rutgers University, Newark, NJ 07107, USA.
| | - Nimisha Shiwalkar
- Department of Anesthesiology, New Jersey Medical School, Rutgers University, Newark, NJ 07107, USA.
| | - Kavya Reddy
- Department of Anesthesiology, New Jersey Medical School, Rutgers University, Newark, NJ 07107, USA.
| | - Peter Shin
- Department of Anesthesiology, New Jersey Medical School, Rutgers University, Newark, NJ 07107, USA.
| | - Alex Bekker
- Department of Anesthesiology, New Jersey Medical School, Rutgers University, Newark, NJ 07107, USA.
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Peng SY, Li B, Xi K, Wang JJ, Zhu JN. Presynaptic α 2-adrenoceptor modulates glutamatergic synaptic transmission in rat nucleus accumbens in vitro. Neurosci Lett 2018; 665:117-122. [PMID: 29195907 DOI: 10.1016/j.neulet.2017.11.060] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Revised: 11/25/2017] [Accepted: 11/27/2017] [Indexed: 12/14/2022]
Abstract
The nucleus accumbens (NAc), integrating information from the prefrontal cortex and limbic structures, plays a critical role in reward and emotion regulation. Previous studies have reported that the NAc shell receives direct noradrenergic projections, and activation of α2-adrenoceptor (α2-AR) in the NAc shell decreases the fear or anxiety level of rats. However, the underlying mechanism is still little known. Intriguingly, glutamatergic neurotransmission in the NAc shell is closely related to reward and emotion. Here, using brain slice preparations and whole-cell patch clamp recordings, we examined the effect of activation of α2-AR on glutamatergic neurotransmission in the NAc shell. Perfusing slice with α2-AR selective agonist clonidine (CLON) reduced the evoked excitatory postsynaptic currents (EPSCs) on the NAc shell neurons. This inhibitory effect on AMPA-mediated glutamatergic EPSCs was blocked by the α2-AR selective antagonist yohimbine (YOH). Notably, CLON reduced the frequency but not the amplitude of miniature EPSCs. Furthermore, CLON decreased the first EPSC amplitude but increased the paired-pulse facilitation on the NAc shell neurons, and it did not affect postsynaptic AMPA/NMDA ratio, revealing a presynaptic mechanism of α2-AR-mediated inhibition on glutamatergic transmission. In addition, the modulation on glutamatergic transmission by α2-AR was independent of presynaptic NMDA receptor. These results suggest that noradrenergic afferent inputs may suppress glutamatergic synaptic transmission via presynaptic α2-AR in the NAc shell, and actively participate in rewarding and emotional processes via the NAc.
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Affiliation(s)
- Shi-Yu Peng
- State Key Laboratory of Pharmaceutical Biotechnology and Department of Biological Science and Technology, School of Life Sciences, Nanjing University, 163 Xianlin Avenue, Nanjing 210023, China
| | - Bin Li
- State Key Laboratory of Pharmaceutical Biotechnology and Department of Biological Science and Technology, School of Life Sciences, Nanjing University, 163 Xianlin Avenue, Nanjing 210023, China
| | - Kang Xi
- State Key Laboratory of Pharmaceutical Biotechnology and Department of Biological Science and Technology, School of Life Sciences, Nanjing University, 163 Xianlin Avenue, Nanjing 210023, China
| | - Jian-Jun Wang
- State Key Laboratory of Pharmaceutical Biotechnology and Department of Biological Science and Technology, School of Life Sciences, Nanjing University, 163 Xianlin Avenue, Nanjing 210023, China.
| | - Jing-Ning Zhu
- State Key Laboratory of Pharmaceutical Biotechnology and Department of Biological Science and Technology, School of Life Sciences, Nanjing University, 163 Xianlin Avenue, Nanjing 210023, China.
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Zhu HY, Liu X, Miao X, Li D, Wang S, Xu GY. Up-regulation of CXCR4 expression contributes to persistent abdominal pain in rats with chronic pancreatitis. Mol Pain 2017; 13:1744806917697979. [PMID: 28337946 PMCID: PMC5407662 DOI: 10.1177/1744806917697979] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Background Pain in patients with chronic pancreatitis is critical hallmark that accompanied inflammation, fibrosis, and destruction of glandular pancreas. Many researchers have demonstrated that stromal cell-derived factor 1 (also named as CXCL12) and its cognate receptor C-X-C chemokine receptor type 4 (CXCR4) involved in mediating neuropathic and bone cancer pain. However, their roles in chronic pancreatic pain remain largely unclear. Methods Chronic pancreatitis was induced by intraductal injection of trinitrobenzene sulfonic acid to the pancreas. Von Frey filament tests were conducted to evaluate pancreas hypersensitivity of rat. Expression of CXCL12, CXCR4, NaV1.8, and pERK in rat dorsal root ganglion was detected by Western blot analyses. Dorsal root ganglion neuronal excitability was assessed by electrophysiological recordings. Results We showed that both CXCL12 and CXCR4 were dramatically up-regulated in the dorsal root ganglion in trinitrobenzene sulfonic acid-induced chronic pancreatitis pain model. Intrathecal application with AMD3100, a potent and selective CXCR4 inhibitor, reversed the hyperexcitability of dorsal root ganglion neurons innervating the pancreas of rats following trinitrobenzene sulfonic acid injection. Furthermore, trinitrobenzene sulfonic acid-induced extracellular signal-regulated kinase activation and Nav1.8 up-regulation in dorsal root ganglias were reversed by intrathecal application with AMD3100 as well as by blockade of extracellular signal-regulated kinase activation by intrathecal U0126. More importantly, the trinitrobenzene sulfonic acid-induced persistent pain was significantly suppressed by CXCR4 and extracellular signal-regulated kinase inhibitors. Conclusions The present results suggest that the activation of CXCL12–CXCR4 signaling might contribute to pancreatic pain and that extracellular signal-regulated kinase-dependent Nav1.8 up-regulation might lead to hyperexcitability of the primary nociceptor neurons in rats with chronic pancreatitis.
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Affiliation(s)
- Hong-Yan Zhu
- 1 Center for Translation Medicine, The Affiliated Zhangjiagang Hospital of Soochow University, Zhangjiagang, P.R. China
| | - Xuelian Liu
- 2 Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases, Institute of Neuroscience, Soochow University, Suzhou, P.R. China
| | - Xiuhua Miao
- 1 Center for Translation Medicine, The Affiliated Zhangjiagang Hospital of Soochow University, Zhangjiagang, P.R. China
| | - Di Li
- 1 Center for Translation Medicine, The Affiliated Zhangjiagang Hospital of Soochow University, Zhangjiagang, P.R. China
| | - Shusheng Wang
- 1 Center for Translation Medicine, The Affiliated Zhangjiagang Hospital of Soochow University, Zhangjiagang, P.R. China
| | - Guang-Yin Xu
- 1 Center for Translation Medicine, The Affiliated Zhangjiagang Hospital of Soochow University, Zhangjiagang, P.R. China.,2 Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases, Institute of Neuroscience, Soochow University, Suzhou, P.R. China
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Lehner M, Gryz M, Wisłowska-Stanek A, Turzyńska D, Sobolewska A, Skórzewska A, Płaźnik A. The amphetamine-associated context exerts a stronger motivational effect in low-anxiety rats than in high-anxiety rats. Behav Brain Res 2017; 330:97-107. [PMID: 28479265 DOI: 10.1016/j.bbr.2017.05.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Revised: 04/27/2017] [Accepted: 05/03/2017] [Indexed: 11/28/2022]
Abstract
This study used the conditioned place preference test to explore the effects of subchronic amphetamine administration on drug-associated cues in rats with different emotional reactivity. We also examined the changes in markers of dopaminergic activity in brain regions in response to the amphetamine-paired context, after a withdrawal period preceded by subchronic amphetamine treatment. We used low-anxiety (LR) and high-anxiety (HR) rats, which are known to exhibit distinct levels of susceptibility to amphetamine. Compared to HR rats, LR rats spent significantly more time in the amphetamine-paired compartment after the withdrawal period preceded by subchronic amphetamine treatment. Compared to HR control rats, LR control rats showed higher expression of the D1 receptor in the nucleus accumbens core (NAC core) and basolateral amygdala and higher expression of the D2 receptor in the NAC core. After the amphetamine treatment and withdrawal period, the LR rats showed higher D1 receptor expression in the NAC core, an increased level of homovanilic acid (HVA) in the prefrontal cortex, the NAC and the central amygdala than HR rats, as well as lower D2 receptor expression in the NAC core and the amygdala than LR control rats. These results indicate that the differences in the activity of the dopaminergic mesolimbic system in the HR and LR rats are maintained and even enhanced after a multi-day break in the use of the drug, indicating the occurrence of sensitisation. These findings show that the innate reactivity of the limbic dopaminergic innervations, dependent on the level of emotional reactivity, may significantly and chronically modify the development and maintenance of sensitisation to amphetamine.
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Affiliation(s)
- Małgorzata Lehner
- Department of Neurochemistry, Institute of Psychiatry and Neurology, 9 Sobieskiego Street, 02-957 Warsaw, Poland.
| | - Marek Gryz
- Department of Neurochemistry, Institute of Psychiatry and Neurology, 9 Sobieskiego Street, 02-957 Warsaw, Poland
| | - Aleksandra Wisłowska-Stanek
- Department of Experimental and Clinical Pharmacology, Medical University of Warsaw, Centre for Preclinical Research and Technology CEPT, 1B Banacha Streeet, 02-097 Warsaw, Poland
| | - Danuta Turzyńska
- Department of Neurochemistry, Institute of Psychiatry and Neurology, 9 Sobieskiego Street, 02-957 Warsaw, Poland
| | - Alicja Sobolewska
- Department of Neurochemistry, Institute of Psychiatry and Neurology, 9 Sobieskiego Street, 02-957 Warsaw, Poland
| | - Anna Skórzewska
- Department of Neurochemistry, Institute of Psychiatry and Neurology, 9 Sobieskiego Street, 02-957 Warsaw, Poland
| | - Adam Płaźnik
- Department of Neurochemistry, Institute of Psychiatry and Neurology, 9 Sobieskiego Street, 02-957 Warsaw, Poland; Department of Experimental and Clinical Pharmacology, Medical University of Warsaw, Centre for Preclinical Research and Technology CEPT, 1B Banacha Streeet, 02-097 Warsaw, Poland
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Yin G, Fan J, Zhou W, Ding Q, Zhang J, Wu X, Tang P, Zhou H, Wan B, Yin G. ERK inhibition sensitizes CZ415-induced anti-osteosarcoma activity in vitro and in vivo. Oncotarget 2017; 8:82027-82036. [PMID: 29137241 PMCID: PMC5669867 DOI: 10.18632/oncotarget.18303] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2017] [Accepted: 04/18/2017] [Indexed: 11/25/2022] Open
Abstract
mTOR is a valuable oncotarget for osteosarcoma. The anti-osteosarcoma activity by a novel mTOR kinase inhibitor, CZ415, was evaluated. We demonstrated that CZ415 potently inhibited survival and proliferation of known osteosarcoma cell lines (U2OS, MG-63 and SaOs2), and primary human osteosarcoma cells. Further, CZ415 provoked apoptosis and disrupted cell cycle progression in osteosarcoma cells. CZ415 treatment in osteosarcoma cells concurrently blocked mTORC1 and mTORC2 activation. Intriguingly, ERK-MAPK activation could be a major resistance factor of CZ415. ERK inhibition (by MEK162/U0126) or knockdown (by targeted ERK1/2 shRNAs) dramatically sensitized CZ415-induced osteosarcoma cell apoptosis. In vivo, CZ415 oral administration efficiently inhibited U2OS tumor growth in mice. Its activity was further potentiated with co-administration of MEK162. Collectively, we demonstrate that ERK inhibition sensitizes CZ415-induced anti-osteosarcoma activity in vitro and in vivo. CZ415 could be further tested as a promising anti-osteosarcoma agent, alone or in combination of ERK inhibition.
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Affiliation(s)
- Gang Yin
- Department of Spine Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, China.,Department of Orthopaedics, Changzhou Wujin Hospital Affiliated to Jiangsu University, Changzhou, Jiangsu 213017, China
| | - Jin Fan
- Department of Spine Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Wei Zhou
- Department of Spine Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Qingfeng Ding
- Department of Spine Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Jun Zhang
- Department of Spine Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Xuan Wu
- Department of Spine Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Pengyu Tang
- Department of Spine Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Hao Zhou
- Department of Spine Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Bowen Wan
- Department of Spine Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Guoyong Yin
- Department of Spine Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, China
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Lu L, Zhou W. Special Topic on Mental Health and Addiction. Neurosci Bull 2016; 32:509-11. [PMID: 27873178 DOI: 10.1007/s12264-016-0085-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Accepted: 11/10/2016] [Indexed: 10/20/2022] Open
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