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Lan YP, Ding CZ, Xia JX, Yang YZ, Zhao YB. Analysis of the functional role and mRNA expression of GABA B R in the nucleus accumbens of cocaine-addicted rats. J Chin Med Assoc 2024; 87:754-764. [PMID: 38860774 DOI: 10.1097/jcma.0000000000001119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/12/2024] Open
Abstract
BACKGROUND Drug addiction is a social and medical problem that must be urgently addressed. The nucleus accumbens (NAc) is closely related to addiction-related learning memory, and γ-aminobutyric acid type B receptor (GABA B R) is a potential target for the treatment of drug addiction. However, the role of GABA B R activity levels in the NAc in cocaine addiction is unclear. METHODS In this study, we established an animal model of cocaine dependence, modulated the level of GABA B R activity, applied a conditioned place preference assay (CPP) to assess the role of the NAc in reconsolidation of addiction memory, evaluated learning and memory functions by behavioral experiments, examined the expression of GB1, GB2, cyclic adenosine monophosphate response element binding protein (CREB), p-CREB, protein kinase A (PKA), protein kinase (ERK), and Brain-derived neurotrophic factor (BDNF) in the NAc by molecular biology experiments, and screened differentially significantly expressed genes by transcriptome sequencing. RESULTS Our study showed that the GABA B receptor agonist baclofen (BLF) had a significant effect on locomotor distance in rats, promoted an increase in GABA levels and significantly inhibited the PKA and ERK1/2/CREB/BDNF signaling pathways. Moreover, transcriptome sequencing showed that GABA B R antagonist intervention identified a total of 21 upregulated mRNAs and 21 downregulated mRNAs. The differentially expressed (DE) mRNA genes were mainly enriched in tyrosine metabolism; however, further study is needed. CONCLUSION GABA B R activity in the NAc is involved in the regulation of cocaine addiction and may play an important role through key mRNA pathways.
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Affiliation(s)
- Yan-Ping Lan
- Department of Neurosurgery, People's Hospital of Ningxia Hui Autonomous Region, Yinchuan, Ningxia, China
- Key Laboratory of Craniocerebral Diseases, Ningxia Medical University, Yinchuan, Ningxia, China
| | - Chen-Zhe Ding
- Department of Neurosurgery, People's Hospital of Ningxia Hui Autonomous Region, Yinchuan, Ningxia, China
| | - Jian-Xue Xia
- Department of Neurosurgery, People's Hospital of Ningxia Hui Autonomous Region, Yinchuan, Ningxia, China
| | - Yun-Zhen Yang
- Department of Neurosurgery, People's Hospital of Ningxia Hui Autonomous Region, Yinchuan, Ningxia, China
| | - Yan-Bin Zhao
- Department of Neurosurgery, People's Hospital of Ningxia Hui Autonomous Region, Yinchuan, Ningxia, China
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Pince CL, Whiting KE, Wang T, Lékó AH, Farinelli LA, Cooper D, Farokhnia M, Vendruscolo LF, Leggio L. Role of aldosterone and mineralocorticoid receptor (MR) in addiction: A scoping review. Neurosci Biobehav Rev 2023; 154:105427. [PMID: 37858908 PMCID: PMC10865927 DOI: 10.1016/j.neubiorev.2023.105427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 09/24/2023] [Accepted: 10/13/2023] [Indexed: 10/21/2023]
Abstract
Preclinical and human studies suggest a role of aldosterone and mineralocorticoid receptor (MR) in addiction. This scoping review aimed to summarize (1) the relationship between alcohol and other substance use disorders (ASUDs) and dysfunctions of the aldosterone and MR, and (2) how pharmacological manipulations of MR may affect ASUD-related outcomes. Our search in four databases (MEDLINE, Embase, Web of Science, and Cochrane Library) indicated that most studies focused on the relationship between aldosterone, MR, and alcohol (n = 30), with the rest focused on opioids (n = 5), nicotine (n = 9), and other addictive substances (n = 9). Despite some inconsistencies, the overall results suggest peripheral and central dysregulations of aldosterone and MR in several species and that these dysregulations depended on the pattern of drug exposure and genetic factors. We conclude that MR antagonism may be a promising target in ASUD, yet future studies are warranted.
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Affiliation(s)
- Claire L Pince
- Clinical Psychoneuroendocrinology and Neuropsychopharmacology Section, Translational Addiction Medicine Branch, National Institute on Drug Abuse Intramural Research Program and National Institute on Alcohol Abuse and Alcoholism Division of Intramural Clinical and Biological Research, National Institutes of Health, 251 Bayview Blvd, Suite 200, Baltimore, MD 21224, USA; Neurobiology of Addiction Section, Integrative Neuroscience Research Branch, National Institute on Drug Abuse Intramural Research Program, National Institutes of Health, 251 Bayview Blvd, Suite 200, Baltimore, MD 21224, USA; Stress & Addiction Neuroscience Unit, Integrative Neuroscience Research Branch, National Institute on Drug Abuse Intramural Research Program and National Institute on Alcohol Abuse and Alcoholism Division of Intramural Clinical and Biological Research, National Institutes of Health, 251 Bayview Blvd, Suite 200, Baltimore, MD 21224, USA
| | - Kimberly E Whiting
- Clinical Psychoneuroendocrinology and Neuropsychopharmacology Section, Translational Addiction Medicine Branch, National Institute on Drug Abuse Intramural Research Program and National Institute on Alcohol Abuse and Alcoholism Division of Intramural Clinical and Biological Research, National Institutes of Health, 251 Bayview Blvd, Suite 200, Baltimore, MD 21224, USA; Neurobiology of Addiction Section, Integrative Neuroscience Research Branch, National Institute on Drug Abuse Intramural Research Program, National Institutes of Health, 251 Bayview Blvd, Suite 200, Baltimore, MD 21224, USA
| | - Tammy Wang
- Clinical Psychoneuroendocrinology and Neuropsychopharmacology Section, Translational Addiction Medicine Branch, National Institute on Drug Abuse Intramural Research Program and National Institute on Alcohol Abuse and Alcoholism Division of Intramural Clinical and Biological Research, National Institutes of Health, 251 Bayview Blvd, Suite 200, Baltimore, MD 21224, USA
| | - András H Lékó
- Clinical Psychoneuroendocrinology and Neuropsychopharmacology Section, Translational Addiction Medicine Branch, National Institute on Drug Abuse Intramural Research Program and National Institute on Alcohol Abuse and Alcoholism Division of Intramural Clinical and Biological Research, National Institutes of Health, 251 Bayview Blvd, Suite 200, Baltimore, MD 21224, USA; Center on Compulsive Behaviors, Intramural Research Program, National Institutes of Health, Bethesda, MD 20892, USA
| | - Lisa A Farinelli
- Clinical Psychoneuroendocrinology and Neuropsychopharmacology Section, Translational Addiction Medicine Branch, National Institute on Drug Abuse Intramural Research Program and National Institute on Alcohol Abuse and Alcoholism Division of Intramural Clinical and Biological Research, National Institutes of Health, 251 Bayview Blvd, Suite 200, Baltimore, MD 21224, USA
| | - Diane Cooper
- Office of Research Services, Division of Library Services, National Institutes of Health, Building 10, Bethesda, MD 20892, USA
| | - Mehdi Farokhnia
- Clinical Psychoneuroendocrinology and Neuropsychopharmacology Section, Translational Addiction Medicine Branch, National Institute on Drug Abuse Intramural Research Program and National Institute on Alcohol Abuse and Alcoholism Division of Intramural Clinical and Biological Research, National Institutes of Health, 251 Bayview Blvd, Suite 200, Baltimore, MD 21224, USA
| | - Leandro F Vendruscolo
- Stress & Addiction Neuroscience Unit, Integrative Neuroscience Research Branch, National Institute on Drug Abuse Intramural Research Program and National Institute on Alcohol Abuse and Alcoholism Division of Intramural Clinical and Biological Research, National Institutes of Health, 251 Bayview Blvd, Suite 200, Baltimore, MD 21224, USA.
| | - Lorenzo Leggio
- Clinical Psychoneuroendocrinology and Neuropsychopharmacology Section, Translational Addiction Medicine Branch, National Institute on Drug Abuse Intramural Research Program and National Institute on Alcohol Abuse and Alcoholism Division of Intramural Clinical and Biological Research, National Institutes of Health, 251 Bayview Blvd, Suite 200, Baltimore, MD 21224, USA.
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Hammerslag LR, Denehy ED, Carper B, Nolen TL, Prendergast MA, Bardo MT. Effects of the glucocorticoid receptor antagonist PT150 on stress-induced fentanyl seeking in male and female rats. Psychopharmacology (Berl) 2021; 238:2439-2447. [PMID: 34008048 DOI: 10.1007/s00213-021-05865-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Accepted: 04/30/2021] [Indexed: 11/28/2022]
Abstract
RATIONALE Opioid use disorder (OUD) is highly comorbid with stress-related disorders, and stress can serve as a trigger for reinstatement of drug seeking. Glucocorticoid receptor (GR) antagonists such as mifepristone (RU-486) may be effective against stress-induced drug seeking. In the current study, PT150 (formerly ORG-34517), a more selective GR antagonist, was tested using two models of stress-induced drug seeking, namely footshock and yohimbine. METHODS Adult male and female Sprague-Dawley rats were trained to self-administer fentanyl (2.5 μg/kg/infusion, i.v.) in a model of escalation. Rats then received 7 days of abstinence, followed by extinction; PT150 (0, 50 or 100 mg/kg in Nutella®; p.o.) treatment started on the first day of extinction training and continued daily until the end of the study. Following 14 days of extinction, rats were tested for reinstatement following footshock and yohimbine (0, 1, or 2 mg/kg; i.p.), tested in counterbalanced order; PT150 or placebo treatment occurred prior to each extinction and reinstatement session. RESULTS Prior to initiation of PT150 treatment, females self-administered greater levels of fentanyl during 1-h sessions compared to males; however, when switched to 6-h sessions, males and females self-administered similar levels of fentanyl and showed a similar escalation of intake over time. PT150 had no effect on extinction of self-administration. While both footshock and yohimbine reinstated fentanyl seeking, only footshock-induced reinstatement was decreased by PT150 (50 and 100 mg/kg). The effect of PT150 on footshock-induced reinstatement was driven primarily by males. CONCLUSION The glucocorticoid antagonist PT150 reduces shock-induced fentanyl seeking, suggesting it may be effective against stress-induced relapse, although the sex difference in response may need further exploration.
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Affiliation(s)
- Lindsey R Hammerslag
- Department of Psychology, University of Kentucky, BBSRB Room 447, Lexington, KY, 40536-0509, USA
| | - Emily D Denehy
- Department of Psychology, University of Kentucky, BBSRB Room 447, Lexington, KY, 40536-0509, USA
| | - Benjamin Carper
- Research Triangle Institute, Research Triangle Park, Durham, NC, USA
| | - Tracy L Nolen
- Research Triangle Institute, Research Triangle Park, Durham, NC, USA
| | - Mark A Prendergast
- Department of Psychology, University of Kentucky, BBSRB Room 447, Lexington, KY, 40536-0509, USA
| | - Michael T Bardo
- Department of Psychology, University of Kentucky, BBSRB Room 447, Lexington, KY, 40536-0509, USA.
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Circadian rhythm influences naloxone induced morphine withdrawal and neuronal activity of lateral paragigantocellularis nucleus. Behav Brain Res 2021; 414:113450. [PMID: 34265318 DOI: 10.1016/j.bbr.2021.113450] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Revised: 06/10/2021] [Accepted: 07/08/2021] [Indexed: 11/23/2022]
Abstract
Investigations have shown that the circadian rhythm can affect the mechanisms associated with drug dependence. In this regard, we sought to assess the negative consequence of morphine withdrawal syndrome on conditioned place aversion (CPA) and lateral paragigantocellularis (LPGi) neuronal activity in morphine-dependent rats during light (8:00-12:00) and dark (20:00-24:00) cycles. Male Wistar rats (250-300 g) were received 10 mg/kg morphine or its vehicle (Saline, 2 mL/kg/12 h, s.c.) in 13 consecutive days for behavioral assessment tests. Then, naloxone-induced conditioned place aversion and physical signs of withdrawal syndrome were evaluated during light and dark cycles. In contrast to the behavioral part, we performed in vivo extracellular single-unit recording for investigating the neural response of LPGi to naloxone in morphine-dependent rats on day 10 of morphine/saline exposure. Results showed that naloxone induced conditioned place aversion in both light and dark cycles, but the CPA score during the light cycle was larger. Moreover, the intensity of physical signs of morphine withdrawal syndrome was more severe during the light cycle (rest phase) compare to the dark one. In electrophysiological experiments, results indicated that naloxone evoked both excitatory and inhibitory responses in LPGi neurons and the incremental effect of naloxone on LPGi activity was stronger in the light cycle. Also, the neurons with the excitatory response exhibited higher baseline activity in the dark cycle, but the neurons with the inhibitory response showed higher baseline activity in the light cycle. Interestingly, the baseline firing rate of neurons recorded in the light cycle was significantly different in response (excitatory/inhibitory) -dependent manner. We concluded that naloxone-induced changes in LPGi cellular activity and behaviors of morphine-dependent rats can be affected by circadian rhythm and the internal clock.
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Fatahi Z, Zeinaddini-Meymand A, Karimi-Haghighi S, Haghparast A, Khodagholi F, Haghparast A. BDNF and p-GSK3β in the hippocampus mediate the impairment of delay-based decision making in morphine-dependent rats. Neuroreport 2020; 31:1208-1214. [PMID: 33075004 DOI: 10.1097/wnr.0000000000001535] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
It has been shown that morphine addiction impairs cognitive brain functions. However, there is no document to consider the effect of morphine dependency and its withdrawal on cost-benefit decision making and its molecular pathways. The present study aimed to evaluate the influences of morphine dependency and its withdrawal on delay-based decision making and the BDNF, p-GSK3β, and p-CREB levels during the decision making in the hippocampus. Different groups of rats were trained in a T-maze with the delay-based cost-benefit decision-making paradigm. After that, the animals were dependent on morphine, and the percentage of the high reward preference was evaluated. After behavioral tests, BDNF level, p-GSK3β/GSK3β ratio, and p-CREB/CREB ratio in the hippocampus measured by Western blot analysis. The gathered data showed that level of BDNF enhanced while p-GSK3β/GSK3β ratio and p-CREB/CREB ratio in the hippocampus did not change during delay-based decision making. In morphine-dependent rats, the p-GSK3β/GSK3β ratio increased, the BDNF level and p-CREB/CREB ratio did not change in the decision making procedure. After withdrawal from morphine, the BDNF level raised while p-GSK3β/GSK3β ratio and p-CREB/CREB ratio did not change compared to the addiction group. The data declared that BDNF in the hippocampus has a critical role in delay-based decision making. Change in p-CREB in the hippocampus is not related to decision making in normal and morphine-dependent rats. P-GSK3 in the hippocampus is not involved in the decision making in normal rats, but during decision making in morphine-dependent rats, its level increased.
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Affiliation(s)
- Zahra Fatahi
- Neuroscience Research Center, School of Medicine, Shahid Beheshti University of Medical Sciences
| | - Arman Zeinaddini-Meymand
- Neurobiology Research Center, School of Medicine, Shahid Beheshti University of Medical Sciences
| | - Saeideh Karimi-Haghighi
- Neuroscience Research Center, School of Medicine, Shahid Beheshti University of Medical Sciences
| | - Amir Haghparast
- Neuroscience Research Center, School of Medicine, Shahid Beheshti University of Medical Sciences
| | - Fariba Khodagholi
- Neuroscience Research Center, School of Medicine, Shahid Beheshti University of Medical Sciences
| | - Abbas Haghparast
- Neuroscience Research Center, School of Medicine, Shahid Beheshti University of Medical Sciences
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6
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Zhang Y, Zhai H. Bilobalide assuages morphine-induced addiction in hippocampal neuron cells through upregulation of microRNA-101. J Biochem Mol Toxicol 2020; 34:e22493. [PMID: 32319158 DOI: 10.1002/jbt.22493] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Revised: 12/24/2019] [Accepted: 03/03/2020] [Indexed: 11/09/2022]
Abstract
Bilobalide exhibits many biological activities, but its effects on morphine stimulation have not been elucidated. The research aims to explore the function and underlying mechanisms of bilobalide in morphine-led hippocampal neuron cells. Cells were treated with or without morphine or oxaliplatin (OXA), bilobalide, or SCH772984 dilutions. miR-101 inhibitor and negative control were transfected into cells. Western blot and quantitative reverse transcription-polymerase chain reaction were, respectively, conducted to measure the relative expression of proteins or RNAs. Morphine improved the expression levels of orexin1 receptor (OX1R) and c-FOS, the p/t-ERK/PKC as well. The c-FOS protein level and p/t-ERK/PKC were significantly elevated by morphine + OXA. Bilobalide had no effect on OX1R and p/t-PKC but evidently decreased the c-FOS and p/t-ERK. The p-ERK and the c-FOS accumulation levels were remarkably reduced by SCH772984. The production of miR-101 was promoted by bilobalide but inhibited by the miR-101 inhibitor. miR-101 inhibitor abolished bilobalide's inhibitory effects on p/t-ERK. Bilobalide exhibited morphine-induced effects on hippocampal neuron cells by upregulating miR-101.
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Affiliation(s)
- Yan Zhang
- Department of Pathology, Huaihe Hospital, Henan University, Kaifeng, China
| | - Hongyin Zhai
- Department of Children Rehabilitation Medicine, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
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Abstract
This paper is the fortieth consecutive installment of the annual anthological review of research concerning the endogenous opioid system, summarizing articles published during 2017 that studied the behavioral effects of molecular, pharmacological and genetic manipulation of opioid peptides and receptors as well as effects of opioid/opiate agonists and antagonists. The review is subdivided into the following specific topics: molecular-biochemical effects and neurochemical localization studies of endogenous opioids and their receptors (1), the roles of these opioid peptides and receptors in pain and analgesia in animals (2) and humans (3), opioid-sensitive and opioid-insensitive effects of nonopioid analgesics (4), opioid peptide and receptor involvement in tolerance and dependence (5), stress and social status (6), learning and memory (7), eating and drinking (8), drug abuse and alcohol (9), sexual activity and hormones, pregnancy, development and endocrinology (10), mental illness and mood (11), seizures and neurologic disorders (12), electrical-related activity and neurophysiology (13), general activity and locomotion (14), gastrointestinal, renal and hepatic functions (15), cardiovascular responses (16), respiration and thermoregulation (17), and immunological responses (18).
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Affiliation(s)
- Richard J Bodnar
- Department of Psychology and Neuropsychology Doctoral Sub-Program, Queens College, City University of New York, CUNY, 65-30 Kissena Blvd., Flushing, NY, 11367, United States.
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Chen J, Wang ZZ, Zhang S, Chu SF, Mou Z, Chen NH. The effects of glucocorticoids on depressive and anxiety-like behaviors, mineralocorticoid receptor-dependent cell proliferation regulates anxiety-like behaviors. Behav Brain Res 2019; 362:288-298. [DOI: 10.1016/j.bbr.2019.01.026] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2018] [Revised: 01/11/2019] [Accepted: 01/14/2019] [Indexed: 12/31/2022]
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Solecki WB, Kus N, Gralec K, Klasa A, Pradel K, Przewłocki R. Noradrenergic and corticosteroid receptors regulate somatic and motivational symptoms of morphine withdrawal. Behav Brain Res 2019; 360:146-157. [DOI: 10.1016/j.bbr.2018.11.041] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 10/28/2018] [Accepted: 11/26/2018] [Indexed: 01/25/2023]
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Yi LT, Mu RH, Dong SQ, Wang SS, Li CF, Geng D, Liu Q. miR-124 antagonizes the antidepressant-like effects of standardized gypenosides in mice. J Psychopharmacol 2018; 32:458-468. [PMID: 29484897 DOI: 10.1177/0269881118758304] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Our previous study demonstrated that gypenosides produced antidepressant-like effects in mice exposed to chronic mild stress in a brain-derived neurotrophic factor-dependent manner. However, whether other mechanisms are involved in the antidepressant-like effects of gypenosides is not clear. miR-124 is one of the most abundant microRNAs in the hippocampus, and its dysregulation is related to the pathophysiology of depression. The glucocorticoid receptor is dysfunctional in depression, and it is a direct target of miR-124. Therefore, the present study used corticosterone-induced mice as a model to evaluate the role of miR-124 on the antidepressant-like effects of gypenosides. miR-124 agomir was intracerebrally injected prior to administration of gypenosides and corticosterone injection. Sucrose preference and forced swimming tests were performed 21 days later. Proteins related to glucocorticoid receptors and brain-derived neurotrophic factor-tyrosine receptor kinase B signaling in the hippocampus were evaluated. Our results demonstrated that gypenosides reversed the chronic corticosterone injection-induced decreased sucrose preference and increased immobility time. In contrast, this effect was antagonized by miR-124 injection. In addition, gypenosides increased glucocorticoid receptor and tyrosine receptor kinase B expression in the hippocampus, which activated brain-derived neurotrophic factor signaling. miR-124 also blocked these effects. In conclusion, this study demonstrated that a reduction in miR-124 was required for the antidepressant-like effects of gypenosides induced by chronic corticosterone injection in mice.
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Affiliation(s)
- Li-Tao Yi
- 1 Department of Chemical and Pharmaceutical Engineering, Huaqiao University, Xiamen, People's Republic of China.,3 Fujian Provincial Key Laboratory of Biochemical Technology, Huaqiao University, Xiamen, People's Republic of China
| | - Rong-Hao Mu
- 1 Department of Chemical and Pharmaceutical Engineering, Huaqiao University, Xiamen, People's Republic of China
| | - Shu-Qi Dong
- 1 Department of Chemical and Pharmaceutical Engineering, Huaqiao University, Xiamen, People's Republic of China
| | - Shuang-Shuang Wang
- 1 Department of Chemical and Pharmaceutical Engineering, Huaqiao University, Xiamen, People's Republic of China
| | - Cheng-Fu Li
- 4 Xiamen Hospital of Traditional Chinese Medicine Affiliated to Fujian University of Traditional Chinese Medicine, Xiamen, People's Republic of China
| | - Di Geng
- 1 Department of Chemical and Pharmaceutical Engineering, Huaqiao University, Xiamen, People's Republic of China.,3 Fujian Provincial Key Laboratory of Biochemical Technology, Huaqiao University, Xiamen, People's Republic of China
| | - Qing Liu
- 1 Department of Chemical and Pharmaceutical Engineering, Huaqiao University, Xiamen, People's Republic of China.,3 Fujian Provincial Key Laboratory of Biochemical Technology, Huaqiao University, Xiamen, People's Republic of China
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Henriquez AR, Snow SJ, Schladweiler MC, Miller CN, Dye JA, Ledbetter AD, Richards JE, Mauge-Lewis K, McGee MA, Kodavanti UP. Adrenergic and glucocorticoid receptor antagonists reduce ozone-induced lung injury and inflammation. Toxicol Appl Pharmacol 2017; 339:161-171. [PMID: 29247675 DOI: 10.1016/j.taap.2017.12.006] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Revised: 12/05/2017] [Accepted: 12/12/2017] [Indexed: 10/18/2022]
Abstract
Recent studies showed that the circulating stress hormones, epinephrine and corticosterone/cortisol, are involved in mediating ozone-induced pulmonary effects through the activation of the sympathetic-adrenal-medullary (SAM) and hypothalamus-pituitary-adrenal (HPA) axes. Hence, we examined the role of adrenergic and glucocorticoid receptor inhibition in ozone-induced pulmonary injury and inflammation. Male 12-week old Wistar-Kyoto rats were pretreated daily for 7days with propranolol (PROP; a non-selective β adrenergic receptor [AR] antagonist, 10mg/kg, i.p.), mifepristone (MIFE; a glucocorticoid receptor [GR] antagonist, 30mg/kg, s.c.), both drugs (PROP+MIFE), or respective vehicles, and then exposed to air or ozone (0.8ppm), 4h/d for 1 or 2 consecutive days while continuing drug treatment. Ozone exposure alone led to increased peak expiratory flow rates and enhanced pause (Penh); with greater increases by day 2. Receptors blockade minimally affected ventilation in either air- or ozone-exposed rats. Ozone exposure alone was also associated with marked increases in pulmonary vascular leakage, macrophage activation, neutrophilic inflammation and lymphopenia. Notably, PROP, MIFE and PROP+MIFE pretreatments significantly reduced ozone-induced pulmonary vascular leakage; whereas PROP or PROP+MIFE reduced neutrophilic inflammation. PROP also reduced ozone-induced increases in bronchoalveolar lavage fluid (BALF) IL-6 and TNF-α proteins and/or lung Il6 and Tnfα mRNA. MIFE and PROP+MIFE pretreatments reduced ozone-induced increases in BALF N-acetyl glucosaminidase activity, and lymphopenia. We conclude that stress hormones released after ozone exposure modulate pulmonary injury and inflammatory effects through AR and GR in a receptor-specific manner. Individuals with pulmonary diseases receiving AR and GR-related therapy might experience changed sensitivity to air pollution.
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Affiliation(s)
- Andres R Henriquez
- Curriculum in Toxicology, University of North Carolina-Chapel Hill, Chapel Hill, NC, United States
| | - Samantha J Snow
- Environmental Public Health Division, National Health and Environmental Effects Research Laboratory, U.S. Environmental Protection Agency, Research Triangle Park, NC, United States
| | - Mette C Schladweiler
- Environmental Public Health Division, National Health and Environmental Effects Research Laboratory, U.S. Environmental Protection Agency, Research Triangle Park, NC, United States
| | - Colette N Miller
- Environmental Public Health Division, National Health and Environmental Effects Research Laboratory, U.S. Environmental Protection Agency, Research Triangle Park, NC, United States
| | - Janice A Dye
- Environmental Public Health Division, National Health and Environmental Effects Research Laboratory, U.S. Environmental Protection Agency, Research Triangle Park, NC, United States
| | - Allen D Ledbetter
- Environmental Public Health Division, National Health and Environmental Effects Research Laboratory, U.S. Environmental Protection Agency, Research Triangle Park, NC, United States
| | - Judy E Richards
- Environmental Public Health Division, National Health and Environmental Effects Research Laboratory, U.S. Environmental Protection Agency, Research Triangle Park, NC, United States
| | - Kevin Mauge-Lewis
- Curriculum in Toxicology, University of North Carolina-Chapel Hill, Chapel Hill, NC, United States
| | - Marie A McGee
- Oak Ridge Institute for Science and Education, Oak Ridge, TN, United States
| | - Urmila P Kodavanti
- Environmental Public Health Division, National Health and Environmental Effects Research Laboratory, U.S. Environmental Protection Agency, Research Triangle Park, NC, United States.
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12
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Skupio U, Sikora M, Korostynski M, Wawrzczak-Bargiela A, Piechota M, Ficek J, Przewlocki R. Behavioral and transcriptional patterns of protracted opioid self-administration in mice. Addict Biol 2017; 22:1802-1816. [PMID: 27578564 DOI: 10.1111/adb.12449] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Revised: 08/10/2016] [Accepted: 08/11/2016] [Indexed: 12/31/2022]
Abstract
Chronic exposure to opioids induces adaptations in brain function that lead to the formation of the behavioral and physiological symptoms of drug dependence and addiction. Animal models commonly used to test these symptoms typically last less than two weeks, which is presumably too short to observe the alterations in the brain that accompany drug addiction. Here, we analyzed the phenotypic and molecular effects of nearly lifelong morphine or saccharin intake in C57BL/6J mice. We used multiple paradigms to evaluate the symptoms of compulsive drug intake: a progressive ratio schedule, intermittent access and a schedule involving a risk of punishment were programmed into an automated IntelliCage system. Gene expression profiles were evaluated in the striatum using whole-genome microarrays and further validated using quantitative polymerase chain reaction in the striatum and the prefrontal cortex. Mice voluntary self-administering morphine showed addiction-related behavioral pattern that included: higher motivation to work for a drug reward, increased reward seeking and increased craving. The analysis of molecular changes revealed a tolerance effect in the transcriptional response to morphine injection (20 mg/kg, ip), as well as some long-lasting alterations in gene expression profiles between the analyzed groups of animals. Interestingly, among the morphine-drinking animals, certain transcriptional profiles were found to be associated with alterations in behavior. In conclusion, our model represents a novel approach for investigating the behavioral and molecular mechanisms underlying opioid addiction. Prolonged morphine intake caused adaptive processes in the brain that manifested as altered behavior and transcriptional sensitivity to opioids.
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Affiliation(s)
- Urszula Skupio
- Department of Molecular Neuropharmacology, Institute of Pharmacology; Polish Academy of Sciences; Poland
| | - Magdalena Sikora
- Department of Molecular Neuropharmacology, Institute of Pharmacology; Polish Academy of Sciences; Poland
| | - Michal Korostynski
- Department of Molecular Neuropharmacology, Institute of Pharmacology; Polish Academy of Sciences; Poland
| | | | - Marcin Piechota
- Department of Molecular Neuropharmacology, Institute of Pharmacology; Polish Academy of Sciences; Poland
| | - Joanna Ficek
- Department of Molecular Neuropharmacology, Institute of Pharmacology; Polish Academy of Sciences; Poland
| | - Ryszard Przewlocki
- Department of Molecular Neuropharmacology, Institute of Pharmacology; Polish Academy of Sciences; Poland
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Zhu J, Zhu F, Zhao N, Mu X, Li P, Wang W, Liu J, Ma X. Methylation of glucocorticoid receptor gene promoter modulates morphine dependence and accompanied hypothalamus-pituitary-adrenal axis dysfunction. J Neurosci Res 2016; 95:1459-1473. [PMID: 27618384 DOI: 10.1002/jnr.23913] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Revised: 08/08/2016] [Accepted: 08/11/2016] [Indexed: 11/09/2022]
Abstract
Previous studies demonstrated that dysfunction of the hypothalamus-pituitary-adrenal (HPA) axis played an important role in morphine dependence. Nonetheless, the molecular mechanism underlying morphine-induced HPA axis dysfunction and morphine dependence remains unclear. In the current study, 5'-aza-2'-deoxycytidine (5-aza), an inhibitor of DNA methyltransferases (DNMTs), was used to examine the effects of glucocorticoid receptor (GR) promoter 17 methylation on chronic morphine-induced HPA axis dysfunction and behavioral changes in rats and the underlying mechanism. Our results showed that chronic but not acute morphine downregulated the expression of nuclear GR protein and GR exon 17 variant mRNA, and upregulated the methylation of GR 17 exon promoter in the hippocampus of rats. Meanwhile, 5-aza per se had no effect on observed molecular and behavior change. In contrast, pretreatment of 5-aza into rat hippocampus reversed chronic morphine-induced hypermethylation of GR 17 promoter and decrease in GR expression. Moreover, pretreatment of 5-aza attenuated chronic morphine-enhanced HPA axis reactivity and the naloxone-precipitated somatic signs in morphine-dependent rats. Our results suggest that chronic morphine induced hypermethylation of GR 17 promoter, which then downregulated the expression of hippocampal GR, and was thus involved in chronic morphine-induced dysfunction of the HPA axis and the modulation of morphine dependence. Moreover, chronic morphine-induced hypermethylation of GR 17 promoter may be at least partially due to the increase in hippocampal DNMT 1 expression and its binding at GR 17 promoter in the rat hippocampus. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Jie Zhu
- College of Forensic Medicine, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, People's Republic of China
| | - Feng Zhu
- Center for Translational Medicine, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, People's Republic of China
| | - Na Zhao
- Northwest University of Politics and Law School of Police, Xi'an, Shaanxi, People's Republic of China
| | - Xin Mu
- College of Forensic Medicine, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, People's Republic of China.,Reproductive Medicine Center, Maternal and Child Health Hospital of Shaanxi Province & Northwest Women's and Children's Hospital, Xi'an, Shaanxi, People's Republic of China
| | - Pingping Li
- College of Forensic Medicine, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, People's Republic of China
| | - Wei Wang
- Department of Psychiatry, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, People's Republic of China
| | - Jian Liu
- School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, People's Republic of China
| | - Xiancang Ma
- Department of Psychiatry, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, People's Republic of China
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