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Petersen N, Adank DN, Quan Y, Edwards CM, Taylor A, Winder DG, Doyle MA. A novel mouse home cage lickometer system reveals sex- and housing-based influences on alcohol drinking. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.05.22.595186. [PMID: 38826244 PMCID: PMC11142211 DOI: 10.1101/2024.05.22.595186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2024]
Abstract
Alcohol use disorder (AUD) is a significant global health issue. Despite historically higher rates among men, AUD prevalence and negative alcohol-related outcomes in women are rising. Loneliness in humans has been associated with increased alcohol use, and traditional rodent drinking models involve single housing, presenting challenges for studying social enrichment. We developed LIQ PARTI (Lick Instance Quantifier with Poly-Animal RFID Tracking Integration), an open-source tool to examine home cage continuous access two-bottle choice drinking behavior in a group-housed setting, investigating the influence of sex and social isolation on ethanol consumption and bout microstructure in C57Bl/6J mice. LIQ PARTI, based on our previously developed single-housed LIQ HD system, accurately tracks drinking behavior using capacitive-based sensors and RFID technology. Group-housed female mice exhibited higher ethanol preference than males, while males displayed a unique undulating pattern of ethanol preference linked to cage changes, suggesting a potential stress-related response. Chronic ethanol intake distinctly altered bout microstructure between male and female mice, highlighting sex and social environmental influences on drinking behavior. Social isolation with the LIQ HD system amplified fluid intake and ethanol preference in both sexes, accompanied by sex- and fluid-dependent changes in bout microstructure. However, these effects largely reversed upon resocialization, indicating the plasticity of these behaviors in response to social context. Utilizing a novel group-housed home cage lickometer device, our findings illustrate the critical interplay of sex and housing conditions in voluntary alcohol drinking behaviors in C57Bl/6J mice, facilitating nuanced insights into the potential contributions to AUD etiology.
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Affiliation(s)
- Nicholas Petersen
- Vanderbilt Brain Institute, Vanderbilt University School of Medicine, Nashville, TN, 37232
- Vanderbilt Center for Addiction Research, Vanderbilt University School of Medicine, Nashville, TN, 37232
- Department of Molecular Physiology and Biophysics, Vanderbilt University School of Medicine, Nashville, TN, 37232
| | - Danielle N. Adank
- Vanderbilt Brain Institute, Vanderbilt University School of Medicine, Nashville, TN, 37232
- Vanderbilt Center for Addiction Research, Vanderbilt University School of Medicine, Nashville, TN, 37232
- Department of Molecular Physiology and Biophysics, Vanderbilt University School of Medicine, Nashville, TN, 37232
- Department of Neurobiology, UMass Chan Medical School, Worcester, MA, 01655
| | - Yizhen Quan
- Vanderbilt Center for Addiction Research, Vanderbilt University School of Medicine, Nashville, TN, 37232
| | - Caitlyn M. Edwards
- Vanderbilt Brain Institute, Vanderbilt University School of Medicine, Nashville, TN, 37232
- Vanderbilt Center for Addiction Research, Vanderbilt University School of Medicine, Nashville, TN, 37232
- Department of Molecular Physiology and Biophysics, Vanderbilt University School of Medicine, Nashville, TN, 37232
- Department of Neurobiology, UMass Chan Medical School, Worcester, MA, 01655
| | - Anne Taylor
- Vanderbilt Brain Institute, Vanderbilt University School of Medicine, Nashville, TN, 37232
- Vanderbilt Center for Addiction Research, Vanderbilt University School of Medicine, Nashville, TN, 37232
- Department of Molecular Physiology and Biophysics, Vanderbilt University School of Medicine, Nashville, TN, 37232
| | - Danny G. Winder
- Vanderbilt Brain Institute, Vanderbilt University School of Medicine, Nashville, TN, 37232
- Vanderbilt Center for Addiction Research, Vanderbilt University School of Medicine, Nashville, TN, 37232
- Department of Molecular Physiology and Biophysics, Vanderbilt University School of Medicine, Nashville, TN, 37232
- Department of Neurobiology, UMass Chan Medical School, Worcester, MA, 01655
| | - Marie A. Doyle
- Vanderbilt Brain Institute, Vanderbilt University School of Medicine, Nashville, TN, 37232
- Vanderbilt Center for Addiction Research, Vanderbilt University School of Medicine, Nashville, TN, 37232
- Department of Molecular Physiology and Biophysics, Vanderbilt University School of Medicine, Nashville, TN, 37232
- Department of Neurobiology, UMass Chan Medical School, Worcester, MA, 01655
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2
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Augustin SM, Gracias AL, Luo G, Anumola RC, Lovinger DM. Striatonigral direct pathway 2-arachidonoylglycerol contributes to ethanol effects on synaptic transmission and behavior. Neuropsychopharmacology 2023; 48:1941-1951. [PMID: 37528221 PMCID: PMC10584873 DOI: 10.1038/s41386-023-01671-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Accepted: 07/12/2023] [Indexed: 08/03/2023]
Abstract
Endocannabinoids (eCB) and cannabinoid receptor 1 (CB1) play important roles in mediating short- and long-term synaptic plasticity in many brain regions involved in learning and memory, as well as the reinforcing effects of misused substances. Ethanol-induced plasticity and neuroadaptations predominantly occur in striatal direct pathway projecting medium spiny neurons (dMSNs). It is hypothesized that alterations in eCB neuromodulation may be involved. Recent work has implicated a role of eCB 2-arachidonoylglycerol (2-AG) in the rewarding effects of ethanol. However, there is insufficient research to answer which cellular subtype is responsible for mediating the 2-AG eCB signal that might be involved in the rewarding properties of ethanol and the mechanisms by which that occurs. To examine the role of dMSN mediated 2-AG signaling in ethanol related synaptic transmission and behaviors, we used conditional knockout mice in which the 2-AG-synthesizing enzyme diacylglycerol lipase α (DGLα) was deleted in dMSNs, DGLαD1-Cre+. Using acute brain slice photometry and a genetically encoded fluorescent eCB sensor, GRABeCB2.0, to assess real-time eCB mediated activity of sensorimotor inputs from primary motor cortices (M1/M2) to the dorsolateral striatum, we showed that DGLαD1-Cre+ mice had blunted evoked eCB-mediated presynaptic eCB signaling compared to littermate controls. Furthermore, ethanol induced eCB inhibition was significantly reduced in DGLαD1-Cre+ deficient mice. Additionally, there was a reduction in the duration of loss of righting reflex (LORR) to a high dose of ethanol in the DGLαD1-Cre+ mice compared to controls. These mice also showed a male-specific decrease in ethanol preference accompanied by an increase in ethanol-induced water consumption in a voluntary drinking paradigm. There were no significant differences observed in sucrose and quinine consumption between the genotypes. These findings reveal a novel role for dMSN mediated 2-AG signaling in modulating ethanol effects on presynaptic function and behavior.
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Affiliation(s)
- Shana M Augustin
- Laboratory for Integrative Neuroscience, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, 20892, USA.
- Department of Pharmacology, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611, USA.
- Department of Psychiatry and Behavioral Sciences, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611, USA.
| | - Alexa L Gracias
- Laboratory for Integrative Neuroscience, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Guoxiang Luo
- Laboratory for Integrative Neuroscience, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Rishitha C Anumola
- Laboratory for Integrative Neuroscience, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, 20892, USA
| | - David M Lovinger
- Laboratory for Integrative Neuroscience, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, 20892, USA
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3
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Buzzi B, Koseli E, Alkhlaif Y, Parker A, Mustafa MA, Lichtman AH, Buczynski MW, Damaj MI. Differential roles of diacylglycerol lipase (DAGL) enzymes in nicotine withdrawal. Brain Res 2023; 1817:148483. [PMID: 37442250 PMCID: PMC10529956 DOI: 10.1016/j.brainres.2023.148483] [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: 03/16/2023] [Revised: 06/15/2023] [Accepted: 07/10/2023] [Indexed: 07/15/2023]
Abstract
Nicotine and tobacco-related deaths remains a leading cause of preventable death and disease in the United States. Several studies indicate that modulation of the endocannabinoid system, primarily of the endocannabinoid 2-Arachidonoylglycerol (2-AG), alters nicotinic dependence behaviors in rodents. This study, using transgenic knock-out (KO) mice, evaluated the role of the two 2-AG biosynthesis enzymes, (Diacylglycerol lipase-α) DAGL-α and DAGL-β in spontaneous nicotine withdrawal. DAGL-α deletion prevents somatic and affective signs of nicotine withdrawal, while DAGL-β deletion plays a role in hyperalgesia due to nicotine withdrawal. These results suggest a differential role of these enzymes in the various signs of nicotine withdrawal. Our behavioral findings relate to the distribution of these enzymes with DAGL-β being highly expressed in macrophages and DAGL-α in neurons. This study offers new potential targets for smoking cessation therapies.
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Affiliation(s)
- Belle Buzzi
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, VA, USA
| | - Eda Koseli
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, VA, USA
| | - Yasmin Alkhlaif
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, VA, USA
| | - Abigail Parker
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, VA, USA
| | - Mohammed A. Mustafa
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, VA, USA
| | - Aron H Lichtman
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, VA, USA
- Department of Medicinal Chemistry, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Matthew W Buczynski
- School of Neuroscience, Virginia Polytechnic and State University, Blacksburg, VA, USA
| | - M. Imad Damaj
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, VA, USA
- Translational Research Initiative for Pain and Neuropathy, Virginia Commonwealth University, Richmond, VA, USA
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Petersen N, Adank DN, Raghavan R, Winder DG, Doyle MA. LIQ HD (Lick Instance Quantifier Home Cage Device): An Open-Source Tool for Recording Undisturbed Two-Bottle Drinking Behavior in a Home Cage Environment. eNeuro 2023; 10:ENEURO.0506-22.2023. [PMID: 36997312 PMCID: PMC10112549 DOI: 10.1523/eneuro.0506-22.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 03/05/2023] [Accepted: 03/24/2023] [Indexed: 04/01/2023] Open
Abstract
Investigation of rodent drinking behavior has provided insight into drivers of thirst, circadian rhythms, anhedonia, and drug and ethanol consumption. Traditional methods of recording fluid intake involve weighing bottles, which is cumbersome and lacks temporal resolution. Several open-source devices have been designed to improve drink monitoring, particularly for two-bottle choice tasks. However, beam-break sensors lack the ability to detect individual licks for bout microstructure analysis. Thus, we designed LIQ HD (Lick Instance Quantifier Home cage Device) with the goal of using capacitive sensors to increase accuracy and analyze lick microstructure, building a device compatible with ventilated home cages, increasing scale with prolonged undisturbed recordings, and creating a design that is easy to build and use with an intuitive touchscreen graphical user interface. The system tracks two-bottle choice licking behavior in up to 18 rodent cages, or 36 single bottles, on a minute-to-minute timescale controlled by a single Arduino microcontroller. The data are logged to a single SD card, allowing for efficient downstream analysis. LIQ HD accuracy was validated with sucrose, quinine, and ethanol two-bottle choice tasks. The system measures preference over time and changes in bout microstructure, with undisturbed recordings tested up to 7 d. All designs and software are open-source to allow other researchers to build on the system and adapt LIQ HD to their animal home cages.
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Affiliation(s)
- Nicholas Petersen
- Vanderbilt Brain Institute, Vanderbilt University School of Medicine, Nashville, TN 37232
- Vanderbilt Center for Addiction Research, Vanderbilt University School of Medicine, Nashville, TN 37232
- Department of Molecular Physiology and Biophysics, Vanderbilt University School of Medicine, Nashville, TN 37232
| | - Danielle N Adank
- Vanderbilt Brain Institute, Vanderbilt University School of Medicine, Nashville, TN 37232
- Vanderbilt Center for Addiction Research, Vanderbilt University School of Medicine, Nashville, TN 37232
- Department of Molecular Physiology and Biophysics, Vanderbilt University School of Medicine, Nashville, TN 37232
| | - Ritika Raghavan
- Vanderbilt Brain Institute, Vanderbilt University School of Medicine, Nashville, TN 37232
- Vanderbilt Center for Addiction Research, Vanderbilt University School of Medicine, Nashville, TN 37232
- Department of Molecular Physiology and Biophysics, Vanderbilt University School of Medicine, Nashville, TN 37232
| | - Danny G Winder
- Vanderbilt Brain Institute, Vanderbilt University School of Medicine, Nashville, TN 37232
- Vanderbilt Center for Addiction Research, Vanderbilt University School of Medicine, Nashville, TN 37232
- Department of Molecular Physiology and Biophysics, Vanderbilt University School of Medicine, Nashville, TN 37232
- Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, TN 37232
| | - Marie A Doyle
- Vanderbilt Brain Institute, Vanderbilt University School of Medicine, Nashville, TN 37232
- Vanderbilt Center for Addiction Research, Vanderbilt University School of Medicine, Nashville, TN 37232
- Department of Molecular Physiology and Biophysics, Vanderbilt University School of Medicine, Nashville, TN 37232
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Winters ND, Kondev V, Loomba N, Delpire E, Grueter BA, Patel S. Opposing retrograde and astrocyte-dependent endocannabinoid signaling mechanisms regulate lateral habenula synaptic transmission. Cell Rep 2023; 42:112159. [PMID: 36842084 PMCID: PMC10846612 DOI: 10.1016/j.celrep.2023.112159] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 11/29/2022] [Accepted: 02/08/2023] [Indexed: 02/27/2023] Open
Abstract
The lateral habenula (LHb) encodes aversive states, and its dysregulation is implicated in neuropsychiatric disorders, including depression. The endocannabinoid (eCB) system is a neuromodulatory signaling system that broadly serves to counteract the adverse effects of stress; however, CB1 receptor signaling within the LHb can paradoxically promote anxiogenic- and depressive-like effects. Current reports of synaptic actions of eCBs in the LHb are conflicting and lack systematic investigation of eCB regulation of excitatory and inhibitory transmission. Here, we report that eCBs differentially regulate glutamatergic and GABAergic transmission in the LHb, exhibiting canonical and circuit-specific inhibition of both systems and an opposing potentiation of synaptic glutamate release mediated via activation of CB1 receptors on astrocytes. Moreover, simultaneous depression of GABA and potentiation of glutamate release increases the net excitation-inhibition ratio onto LHb neurons, suggesting a potential cellular mechanism by which cannabinoids may promote LHb activity and subsequent anxious- and depressive-like aversive states.
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Affiliation(s)
- Nathan D Winters
- Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, TN 37232, USA; Vanderbilt Center for Addiction Research, Vanderbilt University School of Medicine, Nashville, TN 37232, USA
| | - Veronika Kondev
- Vanderbilt Center for Addiction Research, Vanderbilt University School of Medicine, Nashville, TN 37232, USA; Vanderbilt Brain Institute, Vanderbilt University School of Medicine, Nashville, TN 37232, USA
| | - Niharika Loomba
- Vanderbilt Brain Institute, Vanderbilt University School of Medicine, Nashville, TN 37232, USA
| | - Eric Delpire
- Vanderbilt Brain Institute, Vanderbilt University School of Medicine, Nashville, TN 37232, USA; Department of Anesthesiology, Vanderbilt University School of Medicine, Nashville, TN 37232, USA; Department of Molecular Physiology and Biophysics, Vanderbilt University School of Medicine, Nashville, TN 37232, USA
| | - Brad A Grueter
- Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, TN 37232, USA; Vanderbilt Center for Addiction Research, Vanderbilt University School of Medicine, Nashville, TN 37232, USA; Vanderbilt Brain Institute, Vanderbilt University School of Medicine, Nashville, TN 37232, USA; Department of Anesthesiology, Vanderbilt University School of Medicine, Nashville, TN 37232, USA; Department of Molecular Physiology and Biophysics, Vanderbilt University School of Medicine, Nashville, TN 37232, USA
| | - Sachin Patel
- Northwestern Center for Psychiatric Neuroscience, Department of Psychiatry and Behavioral Sciences, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA.
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Martins de Carvalho L, Chen H, Sutter M, Lasek AW. Sexually dimorphic role for insular perineuronal nets in aversion-resistant alcohol consumption. Front Psychiatry 2023; 14:1122423. [PMID: 36926460 PMCID: PMC10011443 DOI: 10.3389/fpsyt.2023.1122423] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 02/08/2023] [Indexed: 03/08/2023] Open
Abstract
Compulsive alcohol drinking is a key symptom of alcohol use disorder (AUD) that is particularly resistant to treatment. An understanding of the biological factors that underly compulsive drinking will allow for the development of new therapeutic targets for AUD. One animal model of compulsive alcohol drinking involves the addition of bitter-tasting quinine to an ethanol solution and measuring the willingness of the animal to consume ethanol despite the aversive taste. Previous studies have demonstrated that this type of aversion-resistant drinking is modulated in the insular cortex of male mice by specialized condensed extracellular matrix known as perineuronal nets (PNNs), which form a lattice-like structure around parvalbumin-expressing neurons in the cortex. Several laboratories have shown that female mice exhibit higher levels of aversion-resistant ethanol intake, but the role of PNNs in females in this behavior has not been examined. Here we compared PNNs in the insula of male and female mice and determined if disrupting PNNs in female mice would alter aversion-resistant ethanol intake. PNNs were visualized in the insula by fluorescent labeling with Wisteria floribunda agglutinin (WFA) and disrupted in the insula by microinjecting chondroitinase ABC, an enzyme that digests the chondroitin sulfate glycosaminoglycan component of PNNs. Mice were tested for aversion-resistant ethanol consumption by the addition of sequentially increasing concentrations of quinine to the ethanol in a two-bottle choice drinking in the dark procedure. PNN staining intensity was higher in the insula of female compared to male mice, suggesting that PNNs in females might contribute to elevated aversion-resistant drinking. However, disruption of PNNs had limited effect on aversion-resistant drinking in females. In addition, activation of the insula during aversion-resistant drinking, as measured by c-fos immunohistochemistry, was lower in female mice than in males. Taken together, these results suggest that neural mechanisms underlying aversion-resistant ethanol consumption differ in males and females.
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de Carvalho LM, Chen H, Sutter M, Lasek AW. Sexually Dimorphic Role for Insular Perineuronal Nets in Aversion-Resistant Ethanol Consumption. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.01.27.525899. [PMID: 36747687 PMCID: PMC9901005 DOI: 10.1101/2023.01.27.525899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Compulsive alcohol drinking is a key symptom of alcohol use disorder (AUD) that is particularly resistant to treatment. An understanding of the biological factors that underly compulsive drinking will allow for the development of new therapeutic targets for AUD. One animal model of compulsive alcohol drinking involves the addition of bitter-tasting quinine to an ethanol solution and measuring the willingness of the animal to consume ethanol despite the aversive taste. Previous studies have demonstrated that this type of aversion-resistant drinking is modulated in the insular cortex of male mice by specialized condensed extracellular matrix known as perineuronal nets (PNNs), which form a lattice-like structure around parvalbumin-expressing neurons in the cortex. Several laboratories have shown that female mice exhibit higher levels of aversion-resistant ethanol intake but the role of PNNs in females in this behavior has not been examined. Here we compared PNNs in the insula of male and female mice and determined if disrupting PNNs in female mice would alter aversion-resistant ethanol intake. PNNs were visualized in the insula by fluorescent labeling with Wisteria floribunda agglutinin (WFA) and disrupted in the insula by microinjecting chondroitinase ABC, an enzyme that digests the chondroitin sulfate glycosaminoglycan component of PNNs. Mice were tested for aversion-resistant ethanol consumption by the addition of sequentially increasing concentrations of quinine to the ethanol in a two-bottle choice drinking in the dark procedure. PNN staining intensity was higher in the insula of female compared to male mice, suggesting that PNNs in females might contribute to elevated aversion-resistant drinking. However, disruption of PNNs had limited effect on aversion-resistant drinking in females. In addition, activation of the insula during aversion-resistant drinking, as measured by c-fos immunohistochemistry, was lower in female mice than in males. Taken together, these results suggest that neural mechanisms underlying aversion-resistant ethanol consumption differ in males and females.
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Scheyer A, Yasmin F, Naskar S, Patel S. Endocannabinoids at the synapse and beyond: implications for neuropsychiatric disease pathophysiology and treatment. Neuropsychopharmacology 2023; 48:37-53. [PMID: 36100658 PMCID: PMC9700791 DOI: 10.1038/s41386-022-01438-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 08/10/2022] [Accepted: 08/18/2022] [Indexed: 11/09/2022]
Abstract
Endocannabinoids (eCBs) are lipid neuromodulators that suppress neurotransmitter release, reduce postsynaptic excitability, activate astrocyte signaling, and control cellular respiration. Here, we describe canonical and emerging eCB signaling modes and aim to link adaptations in these signaling systems to pathological states. Adaptations in eCB signaling systems have been identified in a variety of biobehavioral and physiological process relevant to neuropsychiatric disease states including stress-related disorders, epilepsy, developmental disorders, obesity, and substance use disorders. These insights have enhanced our understanding of the pathophysiology of neurological and psychiatric disorders and are contributing to the ongoing development of eCB-targeting therapeutics. We suggest future studies aimed at illuminating how adaptations in canonical as well as emerging cellular and synaptic modes of eCB signaling contribute to disease pathophysiology or resilience could further advance these novel treatment approaches.
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Affiliation(s)
| | - Farhana Yasmin
- Northwestern Center for Psychiatric Neuroscience, Chicago, IL, USA
- Department of Psychiatry and Behavioral Sciences, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611, USA
| | - Saptarnab Naskar
- Northwestern Center for Psychiatric Neuroscience, Chicago, IL, USA
- Department of Psychiatry and Behavioral Sciences, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611, USA
| | - Sachin Patel
- Northwestern Center for Psychiatric Neuroscience, Chicago, IL, USA.
- Department of Psychiatry and Behavioral Sciences, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611, USA.
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Morgan A, Adank D, Johnson K, Butler E, Patel S. 2-Arachidonoylglycerol-mediated endocannabinoid signaling modulates mechanical hypersensitivity associated with alcohol withdrawal in mice. Alcohol Clin Exp Res 2022; 46:2010-2024. [PMID: 36125319 PMCID: PMC10091740 DOI: 10.1111/acer.14949] [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: 05/03/2022] [Revised: 09/05/2022] [Accepted: 09/15/2022] [Indexed: 02/01/2023]
Abstract
BACKGROUND Alcohol use disorder (AUD) commonly occurs in patients with chronic pain, and a major barrier to achieving abstinence and preventing relapse is the emergence of hyperalgesia during alcohol withdrawal. Elucidating novel therapeutic approaches to target hyperalgesia associated with alcohol withdrawal could have important implications for treating AUD. Here, we examined the role of 2-arachidonoylglycerol (2-AG)-mediated endocannabinoid (eCB) signaling in the regulation of hyperalgesia associated with alcohol withdrawal in mice. We tested the hypothesis that pharmacological augmentation of 2-AG signaling could reduce hyperalgesia during withdrawal. METHODS Male and female C57BL/6J mice were tested during withdrawal from a continuous access two-bottle choice (2BC) paradigm to investigate how eCB signaling modulates mechanical and thermal sensitivity during withdrawal. Mice were pretreated with the monoacylglycerol lipase (MAGL) inhibitor JZL184 to elevate levels of 2-AG. Rimonabant or AM630 were given to block CB1 and CB2 receptor activity, respectively. DO34 was given to reduce 2-AG by inhibiting the 2-AG synthetic enzyme diacylglycerol lipase (DAGL). RESULTS After 72 h of withdrawal, male and female mice exhibited increased mechanical, but not thermal, hypersensitivity, which normalized by 7 days. This effect was reversed by pretreatment with JZL184. The effects of JZL184 were prevented by coadministration of either the CB1 or the CB2 antagonist. DO34, Rimonabant, and AM630 exacerbated mechanical hypersensitivity during alcohol withdrawal, causing an earlier onset and persistent hypersensitivity even 1 week into withdrawal. CONCLUSIONS Our findings demonstrate the critical role of 2-AG signaling in the bidirectional regulation of mechanical sensitivity during alcohol withdrawal, with enhancement of 2-AG levels reducing sensitivity, and inhibition of 2-AG signaling exacerbating sensitivity. These data suggest that 2-AG augmentation represents a novel approach to the treatment of alcohol withdrawal-associated hyperalgesia and AUD in patients with comorbid pain disorders.
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Affiliation(s)
- Amanda Morgan
- Department of Psychiatry and Behavioral SciencesNorthwestern University Feinberg School of MedicineChicagoIllinoisUSA
| | - Danielle Adank
- Vanderbilt Brain Institute, Vanderbilt UniversityNashvilleTennesseeUSA
| | - Keenan Johnson
- Department of Psychiatry and Behavioral SciencesNorthwestern University Feinberg School of MedicineChicagoIllinoisUSA
| | - Emily Butler
- Interdisciplinary Program in NeuroscienceVanderbilt UniversityNashvilleTennesseeUSA
| | - Sachin Patel
- Department of Psychiatry and Behavioral SciencesNorthwestern University Feinberg School of MedicineChicagoIllinoisUSA
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Khair S, Brenner LA, Koval M, Samuelson D, Cucinello-Regland JA, Anton P, Piano MR, Simon L, Crotty K, Sharieh F, Travers JB, Singh V, Cannon A, Kim A, McCullough RL, Yeligar SM, Wyatt TA, McMahan RH, Choudhry MA, Kovacs EJ. New insights into the mechanism of alcohol-mediated organ damage via its impact on immunity, metabolism, and repair pathways: A summary of the 2021 Alcohol and Immunology Research Interest Group (AIRIG) meeting. Alcohol 2022; 103:1-7. [PMID: 35659577 PMCID: PMC9994264 DOI: 10.1016/j.alcohol.2022.05.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 05/23/2022] [Accepted: 05/24/2022] [Indexed: 01/14/2023]
Abstract
On November 19th, 2021, the annual Alcohol and Immunology Research Interest Group (AIRIG) meeting was held at Loyola University Chicago Health Sciences Campus in Maywood, Illinois. The 2021 meeting focused on how alcohol misuse is linked to immune system derangements, leading to tissue and organ damage, and how this research can be translated into improving treatment of alcohol-related disease. This meeting was divided into three plenary sessions: the first session focused on how alcohol misuse affects different parts of the immune system, the second session presented research on mechanisms of organ damage from alcohol misuse, and the final session highlighted research on potential therapeutic targets for treating alcohol-mediated tissue damage. Diverse areas of alcohol research were covered during the meeting, from alcohol's effect on pulmonary systems and neuroinflammation to epigenetic changes, senescence markers, and microvesicle particles. These presentations yielded a thoughtful discussion on how the findings can lead to therapeutic treatments for people suffering from alcohol-related diseases.
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Affiliation(s)
- Shanawaj Khair
- Department of Surgery, University of Colorado Denver, Anschutz Medical Campus, Aurora, CO, United States; Alcohol Research Program, University of Colorado Denver, Anschutz Medical Campus, Aurora, CO, United States; Molecular Biology Graduate Program, University of Colorado Denver, Anschutz Medical Campus, Aurora, CO, United States; Medical Scientist Training Program, University of Colorado Denver, Anschutz Medical Campus, Aurora, CO, United States
| | - Lisa A Brenner
- VA Rocky Mountain Mental Illness Research Education and Clinical Center, Rocky Mountain Regional Veterans Affairs (VA) Medical Center, Aurora, CO, United States; Department of Physical Medicine and Rehabilitation, University of Colorado Anschutz Medical Campus, Aurora, CO, United States; Department of Psychiatry and Neurology, University of Colorado Anschutz Medical Campus, Aurora, CO, United States; Military and Veteran Microbiome: Consortium for Research and Education, Aurora, CO, United States
| | - Michael Koval
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Department of Medicine, Emory University School of Medicine, Atlanta, GA, United States; Department of Cell Biology, Emory University School of Medicine, Atlanta, GA, United States
| | - Derrick Samuelson
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, United States
| | - Jessica A Cucinello-Regland
- Department of Physiology, Alcohol and Drug Abuse Center of Excellence, Louisiana State University Health Sciences Center, New Orleans, LA, United States
| | - Paige Anton
- Department of Pharmaceutical Sciences, University of Colorado Denver, Anschutz Medical Campus, Aurora, CO, United States
| | - Mariann R Piano
- Center for Research Development and Scholarship, Vanderbilt University School of Nursing, Nashville, TN, United States
| | - Liz Simon
- Department of Physiology, Comprehensive Alcohol HIV/AIDs Research Center, Louisiana State University Health Sciences Center, New Orleans, LA, United States
| | - Kathryn Crotty
- Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, Department of Medicine, Atlanta Veterans Affairs Health Care System, Decatur, GA, United States
| | - Farah Sharieh
- Department of Orthopedic Surgery and Rehabilitation, Loyola University Medical Center, Maywood, IL, United States; Alcohol Research Program, Loyola University Chicago Stritch School of Medicine, Maywood, IL, United States
| | | | - Vaibhav Singh
- Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, OH, United States
| | - Abigail Cannon
- Alcohol Research Program, Burn and Shock Trauma Research Institute, Department of Surgery, Loyola University Chicago Health Sciences Campus, Maywood, IL, United States
| | - Adam Kim
- Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, OH, United States
| | - Rebecca L McCullough
- Department of Pharmaceutical Sciences, University of Colorado Denver, Anschutz Medical Campus, Aurora, CO, United States
| | - Samantha M Yeligar
- Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, Department of Medicine, Atlanta Veterans Affairs Health Care System, Decatur, GA, United States
| | - Todd A Wyatt
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, United States; Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, United States
| | - Rachel H McMahan
- Department of Surgery, University of Colorado Denver, Anschutz Medical Campus, Aurora, CO, United States; Alcohol Research Program, University of Colorado Denver, Anschutz Medical Campus, Aurora, CO, United States
| | - Mashkoor A Choudhry
- Alcohol Research Program, Burn and Shock Trauma Research Institute, Department of Surgery, Loyola University Chicago Health Sciences Campus, Maywood, IL, United States; Integrative Cell Biology Program, Loyola University Chicago Health Sciences Campus, Maywood, IL, United States
| | - Elizabeth J Kovacs
- Department of Surgery, University of Colorado Denver, Anschutz Medical Campus, Aurora, CO, United States; Alcohol Research Program, University of Colorado Denver, Anschutz Medical Campus, Aurora, CO, United States; Molecular Biology Graduate Program, University of Colorado Denver, Anschutz Medical Campus, Aurora, CO, United States; Medical Scientist Training Program, University of Colorado Denver, Anschutz Medical Campus, Aurora, CO, United States; VA Rocky Mountain Mental Illness Research Education and Clinical Center, Rocky Mountain Regional Veterans Affairs (VA) Medical Center, Aurora, CO, United States.
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Effects of Cannabinoid Exposure during Neurodevelopment on Future Effects of Drugs of Abuse: A Preclinical Perspective. Int J Mol Sci 2021; 22:ijms22189989. [PMID: 34576153 PMCID: PMC8472179 DOI: 10.3390/ijms22189989] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 08/30/2021] [Accepted: 09/09/2021] [Indexed: 12/29/2022] Open
Abstract
The endocannabinoid system plays a central role in the earliest stages of embryonic, postnatal and adolescent neurodevelopment. Aberrant activity of this system at key developmental phases has been shown to affect neural development. The aim of this review is to synthesise and analyse preclinical insights within rodent populations, focusing on the effects that perinatal (embryonic, gestational and early postnatal developmental stages) and adolescent (postnatal day 21–60) cannabinoid exposure impose across time on the subsequent activity of various drugs of abuse. Results in rodents show that exposure to cannabinoids during the perinatal and adolescent period can lead to multifaceted behavioural and molecular changes. In the perinatal period, significant effects of Δ9-THC exposure on subsequent opiate and amphetamine reward-related behaviours were observed primarily in male rodents. These effects were not extended to include cocaine or alcohol. In adolescence, various cannabinoid agonists were used experimentally. This array of cannabinoids demonstrated consistent effects on opioids across sex. In contrast, no significant effects were observed regarding the future activity of amphetamines and cocaine. However, these studies focused primarily on male rodents. In conclusion, numerous gaps and limitations are apparent in the current body of research. The sparsity of studies analysing the perinatal period must be addressed. Future research within both periods must also focus on delineating sex-specific effects, moving away from a male-centric focus. Studies should also aim to utilise more clinically relevant cannabinoid treatments.
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