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Su H, Nakauchi S, Sumikawa K. Nicotine-mediated activation of α2 nAChR-expressing OLM cells in developing mouse brains disrupts OLM cell-mediated control of LTP in adolescence. Neurobiol Learn Mem 2022; 194:107674. [PMID: 36029955 PMCID: PMC9835838 DOI: 10.1016/j.nlm.2022.107674] [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: 03/18/2022] [Revised: 08/08/2022] [Accepted: 08/19/2022] [Indexed: 01/14/2023]
Abstract
Early postnatal nicotine exposure, a rodent model of smoking during pregnancy, affects hippocampal synaptic plasticity and memory. Here, we investigated the role of α2 nAChR-expressing OLM (α2-OLM) cells in LTP in unexposed and postnatal nicotine-exposed mice. We found that reduced α2 nAChR-dependent activation of OLM cells in α2 heterozygous knockout mice prevented LTP, whereas enhanced α2 nAChR-dependent activation of OLM cells in heterozygous knockin mice expressing hypersensitive α2 nAChRs facilitated LTP. Both optogenetic and chemogenetic activation of α2-OLM cells facilitated LTP as nicotine did. However, in postnatal nicotine-exposed mice, expressing chemogenetic hM3Dq receptors in α2-OLM cells, LTP was facilitated and both nicotinic and chemogenetic activation of α2-OLM cells prevented rather than facilitated LTP. These results demonstrate a critical role of α2-OLM cell activation in LTP as well as altered α2-OLM cell function in postnatal nicotine-exposed mice. To determine whether nicotine-mediated α2 nAChR activation in developing brains causes facilitated LTP and altered nicotinic modulation of LTP in adolescence, we used homozygous knockin mice expressing hypersensitive α2 nAChRs as a way to selectively activate α2-OLM cells. In the knockin mice, postnatal exposure to a low dose of nicotine, which had no effect on LTP in wild-type mice, is sufficient to cause facilitated LTP and altered nicotinic modulation of LTP as found in wild-type mice exposed to a higher dose of nicotine. Thus, the nicotine-mediated activation of α2 nAChRs on OLM cells in developing brains disrupts the α2-OLM cell-mediated control of LTP in adolescence that might be linked to impaired memory.
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Affiliation(s)
- Hailing Su
- Department of Neurobiology and Behavior, University of California, Irvine, Irvine, CA 92697-4550, USA
| | - Sakura Nakauchi
- Department of Neurobiology and Behavior, University of California, Irvine, Irvine, CA 92697-4550, USA
| | - Katumi Sumikawa
- Department of Neurobiology and Behavior, University of California, Irvine, Irvine, CA 92697-4550, USA.
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2
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Giner P, Maynez-Anchondo L, Liley AE, Uribe KP, Frietze GA, Simon NW, Mendez IA. Increased Risky Choice and Reduced CHRNB2 Expression in Adult Male Rats Exposed to Nicotine Vapor. Int J Mol Sci 2022; 23:1231. [PMID: 35163155 PMCID: PMC8835719 DOI: 10.3390/ijms23031231] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 01/12/2022] [Accepted: 01/19/2022] [Indexed: 02/06/2023] Open
Abstract
While the cognitive enhancing effects of nicotine use have been well documented, it has also been shown to impair decision making. The goal of this study was to determine if exposure to nicotine vapor increases risky decision making. The study also aims to investigate possible long-term effects of nicotine vapor exposure on the expression of genes coding for cholinergic and dopaminergic receptors in brain. Thirty-two adult male Sprague Dawley rats were exposed to 24 mg/mL nicotine vapor or vehicle control, immediately followed by testing in the probability discounting task for 10 consecutive days. Fifty-four days after the 10-day vapor exposure, animals were sacrificed and expression of genes coding for the α4 and β2 cholinergic receptor subunits, and dopamine D1 and D2 receptors, were analyzed using RT-PCR. Exposure to nicotine vapor caused an immediate and transient increase in risky choice. Analyses of gene expression identified significant reductions in CHRNB2 and DRD1 in the nucleus accumbens core and CHRNB2 and DRD2 in the medial prefrontal cortex of rats previously exposed to nicotine vapor, relative to vehicle controls. Results provide data on the negative cognitive effects of nicotine vapor exposure and identify cholinergic and dopaminergic mechanisms that may affected with repeated use.
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Affiliation(s)
- Priscilla Giner
- Department of Psychology, The University of Texas at El Paso, El Paso, TX 79968, USA; (P.G.); (L.M.-A.); (K.P.U.)
| | - Liliana Maynez-Anchondo
- Department of Psychology, The University of Texas at El Paso, El Paso, TX 79968, USA; (P.G.); (L.M.-A.); (K.P.U.)
| | - Anna E. Liley
- Department of Psychology, The University of Memphis, Memphis, TN 38111, USA; (A.E.L.); (N.W.S.)
| | - Kevin P. Uribe
- Department of Psychology, The University of Texas at El Paso, El Paso, TX 79968, USA; (P.G.); (L.M.-A.); (K.P.U.)
| | - Gabriel A. Frietze
- Department of Pharmaceutical Sciences, School of Pharmacy, The University of Texas at El Paso, El Paso, TX 79968, USA;
| | - Nicholas W. Simon
- Department of Psychology, The University of Memphis, Memphis, TN 38111, USA; (A.E.L.); (N.W.S.)
| | - Ian A. Mendez
- Department of Pharmaceutical Sciences, School of Pharmacy, The University of Texas at El Paso, El Paso, TX 79968, USA;
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Martin MM, McCarthy DM, Schatschneider C, Trupiano MX, Jones SK, Kalluri A, Bhide PG. Effects of Developmental Nicotine Exposure on Frontal Cortical GABA-to-Non-GABA Neuron Ratio and Novelty-Seeking Behavior. Cereb Cortex 2021; 30:1830-1842. [PMID: 31599922 DOI: 10.1093/cercor/bhz207] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Cigarette smoking during pregnancy is a major public health concern, resulting in detrimental health effects in the mother and her offspring. The adverse behavioral consequences for children include increased risk for attention deficit hyperactivity disorder, working memory deficits, epilepsy, novelty-seeking, and risk-taking behaviors. Some of these behavioral conditions are consistent with an imbalance in frontal cortical excitatory (glutamate) and inhibitory (GABA) neurotransmitter signaling. We used a GAD67-GFP knock-in mouse model to examine if developmental nicotine exposure alters frontal cortical GABA neuron numbers, GABA-to-non-GABA neuron ratio and behavioral phenotypes. Female mice were exposed to nicotine (100 or 200 μg/mL) in drinking water beginning 3 weeks prior to breeding and until 3 weeks postpartum. Male and female offspring were examined beginning at 60 days of age. The nicotine exposure produced dose-dependent decreases in GABA-to-non-GABA neuron ratios in the prefrontal and medial prefrontal cortices without perturbing the intrinsic differences in cortical thickness and laminar distribution of GABA or non-GABA neurons between these regions. A significant increase in exploratory behavior and a shift toward "approach" in the approach-avoidance paradigm were also observed. Thus, developmental nicotine exposure shifts the cortical excitation-inhibition balance toward excitation and produces behavioral changes consistent with novelty-seeking behavior.
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Affiliation(s)
- Melissa M Martin
- Center for Brain Repair, Department of Biomedical Sciences, Florida State University College of Medicine, Tallahassee, FL 32306-4300, USA
| | - Deirdre M McCarthy
- Center for Brain Repair, Department of Biomedical Sciences, Florida State University College of Medicine, Tallahassee, FL 32306-4300, USA
| | - Chris Schatschneider
- Department of Psychology, Florida State University, Tallahassee, FL 32306-4300, USA
| | - Mia X Trupiano
- Center for Brain Repair, Department of Biomedical Sciences, Florida State University College of Medicine, Tallahassee, FL 32306-4300, USA
| | - Sara K Jones
- Center for Brain Repair, Department of Biomedical Sciences, Florida State University College of Medicine, Tallahassee, FL 32306-4300, USA
| | - Aishani Kalluri
- Center for Brain Repair, Department of Biomedical Sciences, Florida State University College of Medicine, Tallahassee, FL 32306-4300, USA
| | - Pradeep G Bhide
- Center for Brain Repair, Department of Biomedical Sciences, Florida State University College of Medicine, Tallahassee, FL 32306-4300, USA
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Nakauchi S, Su H, Trang I, Sumikawa K. Long-term effects of early postnatal nicotine exposure on cholinergic function in the mouse hippocampal CA1 region. Neurobiol Learn Mem 2021; 181:107445. [PMID: 33895349 PMCID: PMC9836228 DOI: 10.1016/j.nlm.2021.107445] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Revised: 03/30/2021] [Accepted: 04/20/2021] [Indexed: 01/14/2023]
Abstract
In rodent models of smoking during pregnancy, early postnatal nicotine exposure results in impaired hippocampus-dependent memory, but the underlying mechanism remains elusive. Given that hippocampal cholinergic systems modulate memory and rapid development of hippocampal cholinergic systems occurs during nicotine exposure, here we investigated its impacts on cholinergic function. Both nicotinic and muscarinic activation produce transient or long-lasting depression of excitatory synaptic transmission in the hippocampal CA1 region. We found that postnatal nicotine exposure impairs both the induction and nicotinic modulation of NMDAR-dependent long-term depression (LTD). Activation of muscarinic receptors decreases excitatory synaptic transmission and CA1 network activity in both wild-type and α2 knockout mice. These muscarinic effects are still observed in nicotine-exposed mice. M1 muscarinic receptor activity is required for mGluR-dependent LTD. Early postnatal nicotine exposure has no effect on mGluR-dependent LTD induction, suggesting that it has no effect on the function of m1 muscarinic receptors involved in this form of LTD. Our results demonstrate that early postnatal nicotine exposure has more pronounced effects on nicotinic function than muscarinic function in the hippocampal CA1 region. Thus, impaired hippocampus-dependent memory may arise from the developmental disruption of nicotinic cholinergic systems in the hippocampal CA1 region.
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MESH Headings
- Animals
- Animals, Newborn
- CA1 Region, Hippocampal/drug effects
- CA1 Region, Hippocampal/growth & development
- CA1 Region, Hippocampal/metabolism
- Cigarette Smoking
- Excitatory Postsynaptic Potentials/drug effects
- Excitatory Postsynaptic Potentials/physiology
- Female
- Lactation
- Long-Term Synaptic Depression/drug effects
- Long-Term Synaptic Depression/physiology
- Male
- Maternal Exposure
- Memory/drug effects
- Memory/physiology
- Mice
- Mice, Knockout
- Nicotine/pharmacology
- Nicotinic Agonists/pharmacology
- Receptor, Muscarinic M1/drug effects
- Receptor, Muscarinic M1/metabolism
- Receptors, Metabotropic Glutamate/drug effects
- Receptors, Metabotropic Glutamate/metabolism
- Receptors, Muscarinic/drug effects
- Receptors, Muscarinic/metabolism
- Receptors, N-Methyl-D-Aspartate/drug effects
- Receptors, N-Methyl-D-Aspartate/metabolism
- Receptors, Nicotinic/drug effects
- Receptors, Nicotinic/metabolism
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Affiliation(s)
- Sakura Nakauchi
- Department of Neurobiology and Behavior, University of California, Irvine, Irvine, CA 92697-4550, USA
| | - Hailing Su
- Department of Neurobiology and Behavior, University of California, Irvine, Irvine, CA 92697-4550, USA
| | - Ivan Trang
- Department of Neurobiology and Behavior, University of California, Irvine, Irvine, CA 92697-4550, USA
| | - Katumi Sumikawa
- Department of Neurobiology and Behavior, University of California, Irvine, Irvine, CA 92697-4550, USA.
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Leenaars CH, Van der Mierden S, Joosten RN, Van der Weide MA, Schirris M, Dematteis M, Meijboom FL, Feenstra MG, Bleich A. Risk-Based Decision Making: A Systematic Scoping Review of Animal Models and a Pilot Study on the Effects of Sleep Deprivation in Rats. Clocks Sleep 2021; 3:31-52. [PMID: 33498259 PMCID: PMC7838799 DOI: 10.3390/clockssleep3010003] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 01/13/2021] [Accepted: 01/18/2021] [Indexed: 02/07/2023] Open
Abstract
Animals, including humans, frequently make decisions involving risk or uncertainty. Different strategies in these decisions can be advantageous depending the circumstances. Short sleep duration seems to be associated with more risky decisions in humans. Animal models for risk-based decision making can increase mechanistic understanding, but very little data is available concerning the effects of sleep. We combined primary- and meta-research to explore the relationship between sleep and risk-based decision making in animals. Our first objective was to create an overview of the available animal models for risky decision making. We performed a systematic scoping review. Our searches in Pubmed and Psychinfo retrieved 712 references, of which 235 were included. Animal models for risk-based decision making have been described for rodents, non-human primates, birds, pigs and honey-bees. We discuss task designs and model validity. Our second objective was to apply this knowledge and perform a pilot study on the effect of sleep deprivation. We trained and tested male Wistar rats on a probability discounting task; a “safe” lever always resulted in 1 reward, a “risky” lever resulted in 4 or no rewards. Rats adapted their preferences to variations in reward probabilities (p < 0.001), but 12 h of sleep deprivation during the light phase did not clearly alter risk preference (p = 0.21).
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Affiliation(s)
- Cathalijn H.C. Leenaars
- Institute for Laboratory Animal Science, Hannover Medical School, 30625 Hannover, Germany; (S.V.d.M.); (A.B.)
- Department for Health Evidence (Section HTA), SYRCLE, Radboud University Medical Centre, 6600 Nijmegen, The Netherlands
- Unit Animals in Science and Society, Population Health Sciences, Utrecht University, 3500 Utrecht, The Netherlands;
- Correspondence: ; Tel.: +49-511-532-1368
| | - Stevie Van der Mierden
- Institute for Laboratory Animal Science, Hannover Medical School, 30625 Hannover, Germany; (S.V.d.M.); (A.B.)
- Department for Health Evidence (Section HTA), SYRCLE, Radboud University Medical Centre, 6600 Nijmegen, The Netherlands
| | - Ruud N.J.M.A. Joosten
- Netherlands Institute for Neuroscience, an Institute of the Royal Netherlands Academy of Arts and Sciences, 1000 Amsterdam, The Netherlands; (R.N.J.M.A.J.); (M.A.V.d.W.); (M.S.); (M.G.P.F.)
| | - Marnix A. Van der Weide
- Netherlands Institute for Neuroscience, an Institute of the Royal Netherlands Academy of Arts and Sciences, 1000 Amsterdam, The Netherlands; (R.N.J.M.A.J.); (M.A.V.d.W.); (M.S.); (M.G.P.F.)
| | - Mischa Schirris
- Netherlands Institute for Neuroscience, an Institute of the Royal Netherlands Academy of Arts and Sciences, 1000 Amsterdam, The Netherlands; (R.N.J.M.A.J.); (M.A.V.d.W.); (M.S.); (M.G.P.F.)
| | - Maurice Dematteis
- Department of Addiction Medicine, Grenobles Alpes University Hospital, Faculty of Medicine, Grenoble Alpes University, 38400 Grenoble, France;
| | - Franck L.B. Meijboom
- Unit Animals in Science and Society, Population Health Sciences, Utrecht University, 3500 Utrecht, The Netherlands;
| | - Matthijs G.P. Feenstra
- Netherlands Institute for Neuroscience, an Institute of the Royal Netherlands Academy of Arts and Sciences, 1000 Amsterdam, The Netherlands; (R.N.J.M.A.J.); (M.A.V.d.W.); (M.S.); (M.G.P.F.)
| | - André Bleich
- Institute for Laboratory Animal Science, Hannover Medical School, 30625 Hannover, Germany; (S.V.d.M.); (A.B.)
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Mariano S, Pardo M, Buccheri C, Illiano P, Adinolfi A, Lo Russo SLM, Alleva E, Carbone C, Adriani W. Own or dam's genotype? Classical colony breeding may bias spontaneous and stress-challenged activity in DAT-mutant rats. Dev Psychobiol 2019; 62:505-518. [PMID: 31599465 DOI: 10.1002/dev.21927] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 08/29/2019] [Accepted: 09/11/2019] [Indexed: 12/21/2022]
Abstract
There is considerable interest in understanding what makes an individual vulnerable or resilient to the deleterious effects of stressful events. From candidate genes, dopamine (DA) and dopamine transporter (DAT) have been linked to anxiety, depression, and post-traumatic stress disorder. We investigated role of DAT using the new DAT heterozygous (DAT-HET) and homozygous mutant (DAT-KO) rat models of hyperdopaminergia. We studied the impact of two breeding conditions in spontaneous locomotor behavior of female rats. The classical colony, through mating DAT-HET males × DAT-HET females (breeding HET-HET), was used. A second WT colony was derived and maintained (breeding WT-WT). Additionally, a subgroup of rats was bred through mating DAT-KO males × WT females (atypical HET, breeding KO-WT). We studied the effects of genotype and its interaction with maternal care (depending by breeding condition). HET-HET breeding led to reduced activity in HET females compared to WT rats (from WT-WT breeding). However, HET females from KO-WT breeding did not differ so much from WT rats (WT-WT breeding). The maternal-care impact was then confirmed: HET mothers (breeding HET-HET) showed reduced liking/grooming of pups and increased digging away from nest, compared to WT mothers (breeding WT-WT). In their female offspring (HET, breeding HET-HET vs. WT, breeding WT-WT), isolation plus wet bedding induced higher and more persistent impact on activity of HET rats, even when the stressor was removed. Our results highlight the importance of epigenetic factors (e.g., maternal care) in responses to stress expressed by offspring at adulthood, quite independently of genotype. DAT hypofunction could determinate vulnerability to stressful agents via altered maternal care.
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Affiliation(s)
- Stefano Mariano
- Center for Behavioral Sciences and Mental Health, Istituto Superiore di Sanità (I.S.S.), Rome, Italy.,Faculty of Psychology, Università Telematica Internazionale Uninettuno (U.T.I.U.), Rome, Italy
| | - Marta Pardo
- Department of Neurology, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Clelia Buccheri
- Center for Behavioral Sciences and Mental Health, Istituto Superiore di Sanità (I.S.S.), Rome, Italy
| | - Placido Illiano
- Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Annalisa Adinolfi
- Center for Behavioral Sciences and Mental Health, Istituto Superiore di Sanità (I.S.S.), Rome, Italy
| | - Sara Lucia M Lo Russo
- Center for Behavioral Sciences and Mental Health, Istituto Superiore di Sanità (I.S.S.), Rome, Italy
| | - Enrico Alleva
- Center for Behavioral Sciences and Mental Health, Istituto Superiore di Sanità (I.S.S.), Rome, Italy
| | - Cristiana Carbone
- Center for Behavioral Sciences and Mental Health, Istituto Superiore di Sanità (I.S.S.), Rome, Italy
| | - Walter Adriani
- Center for Behavioral Sciences and Mental Health, Istituto Superiore di Sanità (I.S.S.), Rome, Italy.,Faculty of Psychology, Università Telematica Internazionale Uninettuno (U.T.I.U.), Rome, Italy
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