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Courault P, Bouvard S, Bouillot C, Zimmer L, Lancelot S. Preclinical investigation of the effect of stress on the binding of [ 18F]F13640, a 5-HT 1A radiopharmaceutical. Nucl Med Biol 2024; 138-139:108942. [PMID: 39151306 DOI: 10.1016/j.nucmedbio.2024.108942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2024] [Revised: 07/17/2024] [Accepted: 07/22/2024] [Indexed: 08/19/2024]
Abstract
BACKGROUND [18F]F13640 is a new PET radiopharmaceutical for brain molecular imaging of serotonin 5-HT1A receptors. Since we intend to use this radiopharmaceutical in psychiatric studies, it is crucial to establish possible sensitivity modification of 5-HT1A receptors availability during an acute stress exposure. In this study, we first assessed the cerebrometabolic effects of a new animal model of stress with [18F]FDG and then proceeded to test for effects of this model on the cerebral binding of [18F]F13640, a 5-HT1A receptors PET radiopharmaceutical. METHODS Four groups of male Sprague-Dawley were used to identify the optimal model: "stressed group" (n = 10), "post-traumatic stress disorder (PTSD) group" (n = 9) and "restraint group" (n = 8), compared with a control group (n = 8). All rats performed neuroimaging [18F]FDG μPET-CT to decipher which model was the most appropriate to test effects of stress on radiotracer binding. Subsequently, a group of rats (n = 10) underwent two PET imaging acquisitions (baseline and PTSD condition) using the PET radiopharmaceutical [18F]F13640 to assess influence of stress on its binding. Voxel-based analysis was performed to assess [18F]FDG or [18F]F13640 changes. RESULTS In [18F]FDG experiments, the PTSD group showed a pattern of cerebrometabolic activation in various brain regions previously implicated in stress (amygdala, perirhinal cortex, olfactory bulb and caudate). [18F]F13640 PET scans showed increased radiotracer binding in the PTSD condition in caudate nucleus and brainstem. CONCLUSIONS The present study demonstrated stress-induced cerebrometabolic activation or inhibition of various brain regions involved in stress model. Applying this model to our radiotracer, [18F]F13640 showed few influence of stress on its binding. This will enable to rule out any confounding effect of stress during imaging studies.
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Affiliation(s)
- Pierre Courault
- Lyon Neuroscience Research Center (CRNL), CNRS UMR5292, INSERM U1028, Univ. Lyon 1, Lyon, France; Hospices Civils de Lyon (HCL), Lyon, France; CERMEP-Imaging platform, Groupement Hospitalier Est, Bron, France.
| | - Sandrine Bouvard
- Lyon Neuroscience Research Center (CRNL), CNRS UMR5292, INSERM U1028, Univ. Lyon 1, Lyon, France
| | | | - Luc Zimmer
- Lyon Neuroscience Research Center (CRNL), CNRS UMR5292, INSERM U1028, Univ. Lyon 1, Lyon, France; Hospices Civils de Lyon (HCL), Lyon, France; CERMEP-Imaging platform, Groupement Hospitalier Est, Bron, France
| | - Sophie Lancelot
- Lyon Neuroscience Research Center (CRNL), CNRS UMR5292, INSERM U1028, Univ. Lyon 1, Lyon, France; Hospices Civils de Lyon (HCL), Lyon, France; CERMEP-Imaging platform, Groupement Hospitalier Est, Bron, France
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Glushchak K, Ficarro A, Schoenfeld TJ. High-fat diet and acute stress have different effects on object preference tests in rats during adolescence and adulthood. Behav Brain Res 2020; 399:112993. [PMID: 33152318 DOI: 10.1016/j.bbr.2020.112993] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 09/30/2020] [Accepted: 10/28/2020] [Indexed: 12/16/2022]
Abstract
Meals of high-fat diet (HFD) during adolescence produce stronger impairments to memory during adolescence than adulthood, however recovery of memory from adolescent HFD is underexplored. In addition, many tests of rodent memory are confounded by aversive or food-based stimuli, making it difficult to determine baseline memory processing affected by HFD. Thus, we utilized three cohorts of rats (adolescent HFD, adult HFD, and adolescent HFD with recovery) to explore the effects of HFD at different ages on two traditional tests of memory based strictly on object exploration, novel object recognition and novel object location tests. To isolate stress as a variable, rats were tested either at baseline or with cold water swim occurring directly after object acquisition. Results show that preference for novel objects is impaired by stress across all groups, but HFD alone only impairs preference for novel objects during adolescence, although this recovers after switching to a control diet. Additionally, preference for an object in a new location is impaired by HFD in all age groups and fails to recover following diet change. Together the data suggest that stress and HFD differentially affect object preference, based on test type, except during the adolescent period. Because these tests are traditionally interpreted as memory processes dependent on two distinct brain regions, the hippocampus and perirhinal cortex, these results support that stress and HFD affect the hippocampus and perirhinal cortex differently. The data affirm that while perirhinal cortex-dependent behavior recovers, the adolescent period is susceptible to long-lasting dysfunctions of hippocampal behavior by HFD.
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Affiliation(s)
- Karina Glushchak
- Department of Psychological Science and Neuroscience, Belmont University, Nashville, TN, 37212, USA
| | - Alexandria Ficarro
- Department of Psychological Science and Neuroscience, Belmont University, Nashville, TN, 37212, USA
| | - Timothy J Schoenfeld
- Department of Psychological Science and Neuroscience, Belmont University, Nashville, TN, 37212, USA.
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Liu P, Wang G, Zeng F, Liu Y, Fan Y, Wei Y, Qin W, Calhoun VD. Abnormal brain structure implicated in patients with functional dyspepsia. Brain Imaging Behav 2019; 12:459-466. [PMID: 28353135 DOI: 10.1007/s11682-017-9705-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Recent studies suggest dysfunctional brain-gut interactions are involved in the pathophysiology of functional dyspepsia (FD). However, limited studies have investigated brain structural abnormalities in FD patients. This study aimed to identify potential differences in both cortical thickness and subcortical volume in FD patients compared to healthy controls (HCs) and to explore relationships of structural abnormalities with clinical symptoms. Sixty-nine patients and forty-nine HCs underwent 3T structural magnetic resonance imaging scans. Cortical thickness and subcortical volume were compared between the groups across the cortical and subcortical regions, respectively. Regression analysis was then performed to examine relationships between the structure alternations and clinical symptoms in FD patients. Our results showed that FD patients had decreased cortical thickness compared to HCs in the distributed brain regions including the dorsolateral prefrontal cortex (dlPFC), ventrolateral prefrontal cortex (vlPFC), medial prefrontal cortex (mPFC), anterior/posterior cingulate cortex (ACC/PCC), insula, superior parietal cortex (SPC), supramarginal gyrus and lingual gyrus. Significantly negative correlations were observed between the Nepean Dyspepsia Index (NDI) and cortical thickness in the mPFC, second somatosensory cortex (SII), ACC and parahippocampus (paraHIPP). And significantly negative correlations were found between disease duration and the cortical thickness in the vlPFC, first somatosensory cortex (SI) and insula in FD patients. These findings suggest that FD patients have structural abnormalities in brain regions involved in sensory perception, sensorimotor integration, pain modulation, affective and cognitive controls. The relationships between the brain structural changes and clinical symptoms indicate that the alternations may be a consequence of living with FD.
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Affiliation(s)
- Peng Liu
- Life Sciences Research Center, School of Life Science and Technology, Xidian University, Xi'an, Shaanxi, 710071, China. .,Engineering Research Center of Molecular and Neuroimaging Ministry of Education, School of Life Science and Technology, Xidian University, Xi'an, 710071, China.
| | - Geliang Wang
- Life Sciences Research Center, School of Life Science and Technology, Xidian University, Xi'an, Shaanxi, 710071, China.,Engineering Research Center of Molecular and Neuroimaging Ministry of Education, School of Life Science and Technology, Xidian University, Xi'an, 710071, China
| | - Fang Zeng
- Acupuncture and Tuina School, Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China
| | - Yanfei Liu
- Life Sciences Research Center, School of Life Science and Technology, Xidian University, Xi'an, Shaanxi, 710071, China.,Engineering Research Center of Molecular and Neuroimaging Ministry of Education, School of Life Science and Technology, Xidian University, Xi'an, 710071, China
| | - Yingying Fan
- Acupuncture and Tuina School, Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China
| | - Ying Wei
- Acupuncture and Tuina School, Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China
| | - Wei Qin
- Life Sciences Research Center, School of Life Science and Technology, Xidian University, Xi'an, Shaanxi, 710071, China.,Engineering Research Center of Molecular and Neuroimaging Ministry of Education, School of Life Science and Technology, Xidian University, Xi'an, 710071, China
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Gong Q, Su YA, Wu C, Si TM, Deussing JM, Schmidt MV, Wang XD. Chronic Stress Reduces Nectin-1 mRNA Levels and Disrupts Dendritic Spine Plasticity in the Adult Mouse Perirhinal Cortex. Front Cell Neurosci 2018; 12:67. [PMID: 29593501 PMCID: PMC5859075 DOI: 10.3389/fncel.2018.00067] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Accepted: 02/26/2018] [Indexed: 12/28/2022] Open
Abstract
In adulthood, chronic exposure to stressful experiences disrupts synaptic plasticity and cognitive function. Previous studies have shown that perirhinal cortex-dependent object recognition memory is impaired by chronic stress. However, the stress effects on molecular expression and structural plasticity in the perirhinal cortex remain unclear. In this study, we applied the chronic social defeat stress (CSDS) paradigm and measured the mRNA levels of nectin-1, nectin-3 and neurexin-1, three synaptic cell adhesion molecules (CAMs) implicated in the adverse stress effects, in the perirhinal cortex of wild-type (WT) and conditional forebrain corticotropin-releasing hormone receptor 1 conditional knockout (CRHR1-CKO) mice. Chronic stress reduced perirhinal nectin-1 mRNA levels in WT but not CRHR1-CKO mice. In conditional forebrain corticotropin-releasing hormone conditional overexpression (CRH-COE) mice, perirhinal nectin-1 mRNA levels were also reduced, indicating that chronic stress modulates nectin-1 expression through the CRH-CRHR1 system. Moreover, chronic stress altered dendritic spine morphology in the main apical dendrites and reduced spine density in the oblique apical dendrites of perirhinal layer V pyramidal neurons. Our data suggest that chronic stress disrupts cell adhesion and dendritic spine plasticity in perirhinal neurons, which may contribute to stress-induced impairments of perirhinal cortex-dependent memory.
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Affiliation(s)
- Qian Gong
- Department of Neurobiology, Key Laboratory of Medical Neurobiology of Ministry of Health of China, Zhejiang Province Key Laboratory of Neurobiology, Zhejiang University School of Medicine, Hangzhou, China
| | - Yun-Ai Su
- National Clinical Research Center for Mental Disorders, Peking University Sixth Hospital/Institute of Mental Health, Beijing, China.,Key Laboratory of Mental Health, Ministry of Health, Peking University, Beijing, China
| | - Chen Wu
- Department of Neurobiology, Key Laboratory of Medical Neurobiology of Ministry of Health of China, Zhejiang Province Key Laboratory of Neurobiology, Zhejiang University School of Medicine, Hangzhou, China
| | - Tian-Mei Si
- National Clinical Research Center for Mental Disorders, Peking University Sixth Hospital/Institute of Mental Health, Beijing, China.,Key Laboratory of Mental Health, Ministry of Health, Peking University, Beijing, China
| | - Jan M Deussing
- Department of Stress Neurobiology and Neurogenetics, Max Planck Institute of Psychiatry (MPG), Munich, Germany
| | - Mathias V Schmidt
- Department of Stress Neurobiology and Neurogenetics, Max Planck Institute of Psychiatry (MPG), Munich, Germany
| | - Xiao-Dong Wang
- Department of Neurobiology, Key Laboratory of Medical Neurobiology of Ministry of Health of China, Zhejiang Province Key Laboratory of Neurobiology, Zhejiang University School of Medicine, Hangzhou, China
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Ahlgrim NS, Raper J, Johnson E, Bachevalier J. Neonatal perirhinal cortex lesions impair monkeys' ability to modulate their emotional responses. Behav Neurosci 2017; 131:359-71. [PMID: 28956946 PMCID: PMC5675115 DOI: 10.1037/bne0000208] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The medial temporal lobe (MTL) is a collection of brain regions best known for their role in perception, memory, and emotional behavior. Within the MTL, the perirhinal cortex (PRh) plays a critical role in perceptual representation and recognition memory, although its contribution to emotional regulation is still debated. Here, rhesus monkeys with neonatal perirhinal lesions (Neo-PRh) and controls (Neo-C) were tested on the Human Intruder (HI) task at 2 months, 4.5 months, and 5 years of age to assess the role of the PRh in the development of emotional behaviors. The HI task presents a tiered social threat to which typically developing animals modulate their emotional responses according to the level of threat. Unlike animals with neonatal amygdala or hippocampal lesions, Neo-PRh animals were not broadly hyper- or hyporesponsive to the threat presented by the HI task as compared with controls. Instead, Neo-PRh animals displayed an impaired ability to modulate their freezing and anxiety-like behavioral responses according to the varying levels of threat. Impaired transmission of perceptual representation generated by the PRh to the amygdala and hippocampus may explain the animals' inability to appropriately assess and react to complex social stimuli. Neo-PRh animals also displayed fewer hostile behaviors in infancy and more coo vocalizations in adulthood. Neither stress-reactive nor basal cortisol levels were affected by the Neo-PRh lesions. Overall, these results suggest that the PRh is indirectly involved in the expression of emotional behavior and that effects of Neo-PRh lesions are dissociable from neonatal lesions to other temporal lobe structures. (PsycINFO Database Record
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Affiliation(s)
- Nathan S. Ahlgrim
- Graduate Program in Neuroscience, Emory University, Atlanta GA
- Department of Psychology, Emory University, Atlanta GA
| | - Jessica Raper
- Department of Psychology, Emory University, Atlanta GA
- Yerkes National Primate Research Center, Emory University, Atlanta GA
| | - Emily Johnson
- Department of Psychology, Emory University, Atlanta GA
- Yerkes National Primate Research Center, Emory University, Atlanta GA
| | - Jocelyne Bachevalier
- Department of Psychology, Emory University, Atlanta GA
- Yerkes National Primate Research Center, Emory University, Atlanta GA
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Liu J, Lan L, Mu J, Zhao L, Yuan K, Zhang Y, Huang L, Liang F, Tian J. Genetic contribution of catechol-O-methyltransferase in hippocampal structural and functional changes of female migraine sufferers. Hum Brain Mapp 2015; 36:1782-95. [PMID: 25598522 DOI: 10.1002/hbm.22737] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2014] [Revised: 12/16/2014] [Accepted: 01/02/2015] [Indexed: 02/06/2023] Open
Abstract
Physiological and emotional stressors are associated with or provoke each migraine attack and cause structural and functional changes in the central nervous system. The hippocampus, a limbic structure important in anxiety-related behavior, is vulnerable to long-term stress. Given that catechol-O-methyltransferase (COMT) is widely distributed in the hippocampus and its genetic variation is thought to contribute to the interindividual variability in pain perception and anxiety regulation, whether or not migraine and COMT val(158) met genotype have an interactive effect in the key brain area related to maladaptive stress, the hippocampus, is still poorly understood. Using T1-weighted and resting functional MRI, we evaluated the effect of COMT genetic variations on migraine and possible interactions between COMT and the disease in brain structure and function in 135 females with migraine without aura (MWoA) and 111 matched health controls (HC). Optimized voxel-based morphometry (VBM) and functional connectivity (FC) analyses were applied. From the whole brain VBM analysis, we found a significant disease × genotype interaction in the hippocampus, which overlapped with disease-related increase of gray matter (GM) in val homozygote migraineurs. In our results, increased GM in the hippocampus was only found in val homozygote MWoA compared to val homozygote HC. Moreover, FC between the hippocampus and the medial prefrontal cortex was significantly decreased in val homozygotes, and it was negatively correlated with self-rating anxiety scale values.Our results indicated that brain structure and function of the hippocampus are differentially affected by migraine in val homozygotes compared with met carriers.
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Affiliation(s)
- Jixin Liu
- School of Life Science and Technology, Xidian University, Xi'an, People's Republic of China
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Vachon-Presseau E, Roy M, Martel MO, Caron E, Marin MF, Chen J, Albouy G, Plante I, Sullivan MJ, Lupien SJ, Rainville P. The stress model of chronic pain: evidence from basal cortisol and hippocampal structure and function in humans. Brain 2013; 136:815-27. [DOI: 10.1093/brain/aws371] [Citation(s) in RCA: 180] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
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Kealy J, Commins S. The rat perirhinal cortex: A review of anatomy, physiology, plasticity, and function. Prog Neurobiol 2011; 93:522-48. [DOI: 10.1016/j.pneurobio.2011.03.002] [Citation(s) in RCA: 87] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2010] [Revised: 01/28/2011] [Accepted: 03/10/2011] [Indexed: 11/26/2022]
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Porterfield VM, Mintz EM. Temporal patterns of light-induced immediate-early gene expression in the suprachiasmatic nucleus. Neurosci Lett 2009; 463:70-3. [PMID: 19638298 DOI: 10.1016/j.neulet.2009.07.066] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2009] [Revised: 07/06/2009] [Accepted: 07/23/2009] [Indexed: 12/11/2022]
Abstract
Exposing an animal to light during the normal dark period of its daily cycle induces shifts in the animal's circadian rhythm of activity. These shifts are preceded by an increase in the expression of an array of immediate early genes in the suprachiasmatic nucleus, the location of the primary circadian clock in the brain. For most of these genes, little is known about the physiological significance of their expression in the SCN. In order to characterize the expression of these genes, laser capture microscopy, and real-time PCR were used to measure the time course of expression of immediate-early genes in the SCN after a 30-min light pulse during the early portion of the night. Most of the measured genes show peak expression shortly after the end of the stimulus and then decline back to baseline after 2h. However, a few genes, including Rrad, Egr3, and Jun, show a more sustained elevation in expression. Analysis of the function of light-induced genes in other cellular systems suggests a possible role for these genes in reducing the SCN to subsequent photic stimuli and in protecting the SCN from excitotoxicity.
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