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Maddux JM, Gonzales L, Kregar NP. β2* nicotinic acetylcholine receptor subtypes mediate nicotine-induced enhancement of Pavlovian conditioned responding to an alcohol cue. Front Behav Neurosci 2022; 16:1004368. [PMCID: PMC9596985 DOI: 10.3389/fnbeh.2022.1004368] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Accepted: 09/21/2022] [Indexed: 11/13/2022] Open
Abstract
Nicotine enhances Pavlovian conditioned responses to reward-associated cues. We investigated through which nicotinic acetylcholine receptor (nAChR) subtypes nicotine acts to produce this behavioral effect to an alcohol-associated cue. Male Long-Evans rats with freely available food and water were first accustomed to drinking 15% ethanol in their home cages using an intermittent access, two-bottle choice procedure. Then the rats were given 15 Pavlovian conditioning sessions in which a 15-s audiovisual conditioned stimulus (CS) predicted the delivery of 0.2 ml of ethanol, the unconditioned stimulus (US). Each session contained 12 CS-US trials. A control group received explicitly unpaired presentations of the CS and US. We measured Pavlovian conditioned approach to the site of US delivery during presentations of the CS, accounting for pre-CS baseline activity. Before each conditioning session, rats were injected subcutaneously with nicotine (0.4 mg/kg) or saline (1 ml/kg). During nAChR antagonist test sessions, rats were first injected systemically with the β2*-selective nAChR antagonist dihydro-beta-erythroidine (DHβE; 3 mg/kg) or the α7-selective nAChR antagonist methyllycaconitine (MLA; 6 mg/kg), followed by their assigned nicotine or saline injection before assessing their conditioned response to the alcohol-associated cue. Consistent with previous reports, nicotine enhanced the Pavlovian conditioned response to the alcohol-paired cue. DHβE attenuated this enhancement, whereas MLA did not. These results suggest that nicotine acts via β2*, but not α7, nAChRs to amplify Pavlovian conditioned responding to an alcohol cue. These findings contribute to a growing literature that identifies nAChRs as potential targets for pharmacological treatment of co-morbid alcohol and tobacco use disorders.
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Affiliation(s)
- Jean-Marie Maddux
- Department of Psychology, Lake Forest College, Lake Forest, IL, United States
- Neuroscience Program, Lake Forest College, Lake Forest, IL, United States
- *Correspondence: Jean-Marie Maddux
| | - Leslie Gonzales
- Department of Psychology, Lake Forest College, Lake Forest, IL, United States
- Neuroscience Program, Lake Forest College, Lake Forest, IL, United States
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Klenowski PM, Zhao-Shea R, Freels TG, Molas S, Tapper AR. Dynamic activity of interpeduncular nucleus GABAergic neurons controls expression of nicotine withdrawal in male mice. Neuropsychopharmacology 2022; 47:641-651. [PMID: 34326477 PMCID: PMC8782840 DOI: 10.1038/s41386-021-01107-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 07/12/2021] [Accepted: 07/13/2021] [Indexed: 02/07/2023]
Abstract
A critical brain area implicated in nicotine dependence is the interpeduncular nucleus (IPN) located in the ventral midbrain and consisting primarily of GABAergic neurons. Previous studies indicate that IPN GABAergic neurons contribute to expression of somatic symptoms of nicotine withdrawal; however, whether IPN neurons are dynamically regulated during withdrawal in vivo and how this may contribute to both somatic and affective withdrawal behavior is unknown. To bridge this gap in knowledge, we expressed GCaMP in IPN GABAergic neurons and used in vivo fiber photometry to record changes in fluorescence, as a proxy for neuronal activity, in male mice during nicotine withdrawal. Mecamylamine-precipitated withdrawal significantly increased activity of IPN GABAergic neurons in nicotine-dependent, but not nicotine-naive mice. Analysis of GCaMP signals time-locked with somatic symptoms including grooming and scratching revealed reduced IPN GABAergic activity during these behaviors, specifically in mice undergoing withdrawal. In the elevated plus maze, used to measure anxiety-like behavior, an affective withdrawal symptom, IPN GABAergic neuron activity was increased during open-arm versus closed-arm exploration in nicotine-withdrawn, but not non-withdrawn mice. Optogenetic silencing IPN GABAergic neurons during withdrawal significantly reduced withdrawal-induced increases in somatic behavior and increased open-arm exploration. Together, our data indicate that IPN GABAergic neurons are dynamically regulated during nicotine withdrawal, leading to increased anxiety-like symptoms and somatic behavior, which inherently decrease IPN GABAergic neuron activity as a withdrawal-coping mechanism. These results provide a neuronal basis underlying the role of the IPN in the expression of somatic and affective behaviors of nicotine withdrawal.
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Affiliation(s)
- Paul M Klenowski
- Department of Neurobiology, Brudnick Neuropsychiatric Research Institute, University of Massachusetts Medical School, Worcester, MA, USA.
| | - Rubing Zhao-Shea
- Department of Neurobiology, Brudnick Neuropsychiatric Research Institute, University of Massachusetts Medical School, Worcester, MA, USA
| | - Timothy G Freels
- Department of Neurobiology, Brudnick Neuropsychiatric Research Institute, University of Massachusetts Medical School, Worcester, MA, USA
| | - Susanna Molas
- Department of Neurobiology, Brudnick Neuropsychiatric Research Institute, University of Massachusetts Medical School, Worcester, MA, USA
| | - Andrew R Tapper
- Department of Neurobiology, Brudnick Neuropsychiatric Research Institute, University of Massachusetts Medical School, Worcester, MA, USA.
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Suarez JA, Solano JL, Barrios KP, Ortega LA. Nicotine increases behavioral variability on radial arm maze extinction. A preliminary study. LEARNING AND MOTIVATION 2021. [DOI: 10.1016/j.lmot.2021.101721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Alwazzan A, Mehboob R, Gilani SA, Hassan A, Perveen S, Tanvir I, Waseem H, Ehsan K, Ahmad FJ, Akram J. Immunohistochemical Expression of the Alpha Nicotinic Acetylcholine Receptor 7 in the Human Normal, Diabetic, and Preeclamptic Placenta and Products of Conception. Front Physiol 2020; 11:607239. [PMID: 33324243 PMCID: PMC7724587 DOI: 10.3389/fphys.2020.607239] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Accepted: 10/13/2020] [Indexed: 12/20/2022] Open
Abstract
Preeclampsia (PE) and gestational diabetes (GD) are complications in advanced pregnancy while miscarriage for early pregnancy. However, the etiological factors are not well understood. Smoking has been associated with these complications as well as the sudden intrauterine deaths, sudden infant death, miscarriages, and still births. However, the immunolocalization of alpha 7 nicotine acetylcholine receptor (α7-nAChR) is not studied. Materials and Methods: α7-nAChR subunit expression was evaluated in 10 paraffin-embedded placental tissues after delivery and 10 tissue samples of products of conception during first trimester by immunohistochemistry. Among the placental tissues, two samples were normal placental tissue, four from PE mother, and four from GD mother. The expression of α7-nAChR was compared between the two groups in general and within the subgroups of placenta as well. Protein expression was evaluated using the nuclear labeling index (%) of villi with positive cells stained, positive cells in the decidua, and intensity of staining in the outer villous trophoblast layer. Results: The expression of α7-nAChR protein was high in all the cases of placenta and products of conception (POCs). α7-nAChR expression showed no notable differences among different cases of miscarriages irrespective of the mother's age and gestational age at which the event occurred. However, there were some changes among the normal, PE, and GD placental groups in the linings of the blood vessels. Changes were restricted to the villi (as opposed to the decidua) lining cells, both cytotrophoblast and syncytiotrophoblast, and were specific to the α7 subunit. PE blood vessel lining was thicker and showed more expression of this receptor in endothelial cells and myofibroblasts in PE and GD groups. In POCs, the strong expression was observed in the decidua myocytes of maternal blood vessels and in syncytiotrophoblast and cytotrophoblast of chronic villi. Conclusion: Nicotine acetyl choline receptors are found to be expressed highly in the placental tissues and in products of conception. They may be associated with the sudden perinatal deaths and miscarriages or complications of pregnancy.
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Affiliation(s)
- Ahmad Alwazzan
- Division of Gynecology Oncology, Faculty of Medicine, King Abdulaziz University,, Jeddah, Saudi Arabia
| | - Riffat Mehboob
- Research Unit, Faculty of Allied Health Sciences, The University of Lahore, Lahore, Pakistan
- SISSA, International School for Advanced Studies, Trieste, Italy
| | - Syed Amir Gilani
- Research Unit, Faculty of Allied Health Sciences, The University of Lahore, Lahore, Pakistan
| | - Amber Hassan
- Research Unit, Faculty of Allied Health Sciences, The University of Lahore, Lahore, Pakistan
| | - Shahida Perveen
- Department of Pathology, Continental Medical College Lahore, Lahore, Pakistan
| | - Imrana Tanvir
- Department of Pathology, King Abdulaziz University, Rabigh, Saudi Arabia
| | - Humaira Waseem
- Research Unit, Faculty of Allied Health Sciences, The University of Lahore, Lahore, Pakistan
| | | | - Fridoon Jawad Ahmad
- Physiology and Cell Biology Department, University of Health Sciences Lahore, Lahore, Pakistan
- Institute of Regenerative Medicine, University of Health Sciences Lahore, Lahore, Pakistan
| | - Javed Akram
- Physiology and Cell Biology Department, University of Health Sciences Lahore, Lahore, Pakistan
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Ozturk B, Pogun S, Kanit L. Increased alcohol preference and intake in nicotine-preferring rats. THE AMERICAN JOURNAL OF DRUG AND ALCOHOL ABUSE 2020; 46:408-420. [PMID: 31860364 DOI: 10.1080/00952990.2019.1695808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
BACKGROUND Alcohol and tobacco are among the leading substances that are misused together and shared genetic vulnerability is likely. Increased susceptibility to nicotine self-administration has been shown in alcohol-preferring rat-lines. However, a nicotine-preferring (nP) rat-line has not been studied for alcohol preference. OBJECTIVES To evaluate alcohol preference and intake in male and female nP rats. We hypothesized that nP rats and females would drink more ethanol than control rats and males, respectively. METHODS nP rats are being selectively outbred for high oral nicotine intake at Ege University. Seventeen nP (18th generation) and 20 naïve female and male SD rats, not previously exposed to alcohol or nicotine, were used. Twelve-week-old rats were given intermittent access to 20% ethanol in a 2-bottle-choice-procedure for six weeks. After one week withdrawal, six weeks of oral nicotine self-administration was applied. RESULTS nP rats drank significantly more ethanol than controls and their preference for ethanol over water was higher. Female rats' ethanol intake was higher than males'. The nP rats' nicotine preference and intake were higher than controls, and they gained less weight. CONCLUSION We have shown for the first time that nP rats also have high alcohol intake. Our results support the hypothesis that shared genetic factors may underlie concurrent addiction to nicotine and alcohol and have translational value in understanding their misuse. Considering the increased vulnerability for alcohol use disorder in smokers and sex differences observed, early preventive measures in families with a history of tobacco addiction, specifically targeting female members, could have public health benefits.
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Affiliation(s)
- Baran Ozturk
- Center for Brain Research and School of Medicine Department of Physiology, Ege University , Izmir, Turkey
| | - Sakire Pogun
- Center for Brain Research and School of Medicine Department of Physiology, Ege University , Izmir, Turkey
| | - Lutfiye Kanit
- Center for Brain Research and School of Medicine Department of Physiology, Ege University , Izmir, Turkey
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Diendéré J, Zeba AN, Nikièma L, Kaboré A, Savadogo PW, Tougma SJB, Tinto H, Ouédraogo A. Smokeless tobacco use: its prevalence and relationships with dental symptoms, nutritional status and blood pressure among rural women in Burkina Faso. BMC Public Health 2020; 20:579. [PMID: 32345279 PMCID: PMC7189451 DOI: 10.1186/s12889-020-08700-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Accepted: 04/14/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Sub-Saharan women use smokeless tobacco (SLT) more than smoked tobacco. Among Western African countries, the estimated weighted prevalence of SLT use in rural women was found to be the highest in Burkina Faso (after Sierra Leone). This study aimed to assess the prevalence of SLT use and its associated factors among rural women in Burkina Faso by using nationally representative data. METHODS We used data from the 2013 STEPwise approach to Surveillance (STEPS) study, which provided sociodemographic, clinical (anthropometric, systolic blood pressure [SBP], diastolic blood pressure [DBP] and dental symptoms), biological (total and high-density lipoprotein cholesterol and fasting blood sugar), and tobacco and alcohol consumption data. Data for 1730 rural women were used, and we performed Student's chi-squared and logistic regression analyses. RESULTS The prevalence of current SLT use was 13.8% (95% CI: 12.2-15.5). Significant risks for SLT use were the presence of dental symptoms (adjusted odds ratio [aOR] = 2.59; p < 0.001), undernourishment (aOR = 1.78; p < 0.01), decreased waist circumference (aOR = 0.98; p < 0.05), decreased DBP (aOR = 0.97; p < 0.01), increased SBP (aOR = 1.01; p < 0.05), and increased differential blood pressure (aOR = 1.01; p < 0.05). The co-use of alcohol was also a significant risk factor (aOR = 2.80; p < 0.001). CONCLUSION The prevalence of current SLT use was high among rural women in Burkina Faso, and significant concerns for users included alcohol co-use, the occurrence of dental symptoms, undernourishment, and an increase in differential blood pressure. National Public Health interventions are needed to reduce SLT use and its health-related concerns.
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Affiliation(s)
- Jeoffray Diendéré
- Public Health Department, Research Institute for Health Sciences, 399, Avenue de la Liberté, 01 BP 545, Bobo-Dioulasso, 01, Burkina Faso. .,Public Health Department, Centre Muraz, Bobo-Dioulasso, Burkina Faso.
| | - Augustin Nawidimbasba Zeba
- Public Health Department, Research Institute for Health Sciences, 399, Avenue de la Liberté, 01 BP 545, Bobo-Dioulasso, 01, Burkina Faso
| | - Léon Nikièma
- Joseph Ki-Zerbo University, BP 5705, Ouagadougou, 01, Burkina Faso
| | - Ahmed Kaboré
- Public Health Department, Centre Muraz, Bobo-Dioulasso, Burkina Faso.,Joseph Ki-Zerbo University, BP 5705, Ouagadougou, 01, Burkina Faso
| | - Paul Windinpsidi Savadogo
- Institute of Environment and Agricultural Research (INERA/CNRST), rue Guisga, 04 BP 8645, Ouagadougou, Burkina Faso
| | | | - Halidou Tinto
- Public Health Department, Centre Muraz, Bobo-Dioulasso, Burkina Faso.,Clinical Research Unit of Research Institute for Health Sciences Nanoro, 11 BP 218, Ouagadougou, Burkina Faso
| | - Arouna Ouédraogo
- Department of Psychiatry, Yalgado Ouédraogo University Hospital, Joseph Ki-Zerbo University, 01 BP 5705, Ouagadougou, Burkina Faso
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Besson M, Forget B, Correia C, Blanco R, Maskos U. Profound alteration in reward processing due to a human polymorphism in CHRNA5: a role in alcohol dependence and feeding behavior. Neuropsychopharmacology 2019; 44:1906-1916. [PMID: 31288250 PMCID: PMC6785024 DOI: 10.1038/s41386-019-0462-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Revised: 06/12/2019] [Accepted: 07/01/2019] [Indexed: 01/08/2023]
Abstract
Human genetic variation in the nicotinic receptor gene cluster CHRNA5/A3/B4, in particular the non-synonymous and frequent CHRNA5 variant rs16969968 (α5SNP), has an important consequence on smoking behavior in humans. A number of genetic association studies have additionally implicated the CHRNA5 gene in addictions to other drugs, and also body mass index (BMI). Here, we model the α5SNP, in a transgenic rat line, and establish its role in alcohol dependence, and feeding behavior. Rats expressing the α5SNP consume more alcohol, and exhibit increased relapse to alcohol seeking after abstinence. This high-relapsing phenotype is reflected in altered activity in the insula, linked to interoception, as established using c-Fos immunostaining. Similarly, relapse to food seeking is increased in the transgenic group, while a nicotine treatment reduces relapse in both transgenic and control rats. These findings point to a general role of this human polymorphism in reward processing, and multiple addictions other than smoking. This could pave the way for the use of medication targeting the nicotinic receptor in the treatment of alcohol use and eating disorders, and comorbid conditions in smokers.
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Affiliation(s)
- Morgane Besson
- Department of Neuroscience, Unité de Neurobiologie Intégrative des Systèmes Cholinergiques, CNRS UMR 3571, Institut Pasteur, 25 rue du Dr Roux, 75015, Paris, France.
| | - Benoît Forget
- Department of Neuroscience, Unité de Neurobiologie Intégrative des Systèmes Cholinergiques, CNRS UMR 3571, Institut Pasteur, 25 rue du Dr Roux, 75015, Paris, France
- Sorbonne Universités, UPMC Université Paris 06, INSERM, CNRS, Neuroscience Paris Seine - Institut de Biologie Paris Seine (NPS - IBPS), 75005, Paris, France
| | - Caroline Correia
- Department of Neuroscience, Unité de Neurobiologie Intégrative des Systèmes Cholinergiques, CNRS UMR 3571, Institut Pasteur, 25 rue du Dr Roux, 75015, Paris, France
- Laboratoire de Neurosciences Cognitives et Adaptatives, CNRS UMR 7364, Université de Strasbourg, 67000, Strasbourg, France
| | - Rodolphe Blanco
- Department of Neuroscience, Unité de Neurobiologie Intégrative des Systèmes Cholinergiques, CNRS UMR 3571, Institut Pasteur, 25 rue du Dr Roux, 75015, Paris, France
| | - Uwe Maskos
- Department of Neuroscience, Unité de Neurobiologie Intégrative des Systèmes Cholinergiques, CNRS UMR 3571, Institut Pasteur, 25 rue du Dr Roux, 75015, Paris, France.
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