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Vila-Merkle H, González-Martínez A, Campos-Jiménez R, Martínez-Ricós J, Teruel-Martí V, Lloret A, Blasco-Serra A, Cervera-Ferri A. Sex differences in amygdalohippocampal oscillations and neuronal activation in a rodent anxiety model and in response to infralimbic deep brain stimulation. Front Behav Neurosci 2023; 17:1122163. [PMID: 36910127 PMCID: PMC9995972 DOI: 10.3389/fnbeh.2023.1122163] [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: 12/12/2022] [Accepted: 02/09/2023] [Indexed: 02/25/2023] Open
Abstract
Introduction Depression and anxiety are highly comorbid mental disorders with marked sex differences. Both disorders show altered activity in the amygdala, hippocampus, and prefrontal cortex. Infralimbic deep brain stimulation (DBS-IL) has anxiolytic and antidepressant effects, but the underlying mechanisms remain unclear. We aimed to contribute to understanding sex differences in the neurobiology of these disorders. Methods In male and female rats, we recorded neural oscillations along the dorsoventral axis of the hippocampus and the amygdala in response to an anxiogenic drug, FG-7142. Following this, we applied DBS-IL. Results Surprisingly, in females, the anxiogenic drug failed to induce most of the changes observed in males. We found sex differences in slow, delta, theta, and beta oscillations, and the amygdalo-hippocampal communication in response to FG-7142, with modest changes in females. Females had a more prominent basal gamma, and the drug altered this band only in males. We also analyzed c-Fos expression in both sexes in stress-related structures in response to FG-7142, DBS-IL, and combined interventions. With the anxiogenic drug, females showed reduced expression in the nucleus incertus, amygdala, septohippocampal network, and neocortical levels. In both experiments, the DBS-IL reversed FG-7142-induced effects, with a more substantial effect in males than females. Discussion Here, we show a reduced response in female rats which contrasts with the higher prevalence of anxiety in women but is consistent with other studies in rodents. Our results open compelling questions about sex differences in the neurobiology of anxiety and depression and their study in animal models.
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Affiliation(s)
- Hanna Vila-Merkle
- Neuronal Circuits Laboratory, Department of Human Anatomy and Embryology, Faculty of Medicine, University of Valencia, Valencia, Spain
| | - Alicia González-Martínez
- Neuronal Circuits Laboratory, Department of Human Anatomy and Embryology, Faculty of Medicine, University of Valencia, Valencia, Spain
| | - Rut Campos-Jiménez
- Neuronal Circuits Laboratory, Department of Human Anatomy and Embryology, Faculty of Medicine, University of Valencia, Valencia, Spain
| | - Joana Martínez-Ricós
- Neuronal Circuits Laboratory, Department of Human Anatomy and Embryology, Faculty of Medicine, University of Valencia, Valencia, Spain
| | - Vicent Teruel-Martí
- Neuronal Circuits Laboratory, Department of Human Anatomy and Embryology, Faculty of Medicine, University of Valencia, Valencia, Spain
| | - Ana Lloret
- Department of Physiology, Faculty of Medicine, Health Research Institute INCLIVA, CIBERFES, University of Valencia, Valencia, Spain
| | - Arantxa Blasco-Serra
- Study Group for the Anatomical Substrate of Pain and Analgesia (GESADA) Laboratory, Department of Human Anatomy and Embryology, Faculty of Medicine and Odontology, University of Valencia, Valencia, Spain
| | - Ana Cervera-Ferri
- Neuronal Circuits Laboratory, Department of Human Anatomy and Embryology, Faculty of Medicine, University of Valencia, Valencia, Spain
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Zhan TT, Dong ZY, Yi LS, Zhang Y, Sun HH, Zhang HQ, Wang JW, Chen Y, Huang Y, Xu SC. Tandospirone prevents stress-induced anxiety-like behavior and visceral hypersensitivity by suppressing theta oscillation enhancement via 5-HT1A receptors in the anterior cingulate cortex in rats. Front Cell Neurosci 2022; 16:922750. [PMID: 36072567 PMCID: PMC9441562 DOI: 10.3389/fncel.2022.922750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Accepted: 07/28/2022] [Indexed: 11/21/2022] Open
Abstract
Tandospirone, a third-generation of antianxiety agent with fewer side effects, has been widely used in the treatment of anxiety. Moreover, it is interesting that tandospirone has been found to relieve gastrointestinal symptoms in patients with refractory irritable bowel syndrome who also have psychological dysfunctions. However, the underlying mechanism remains unclear. In this study, using a visceral hypersensitivity rat model induced by chronic water avoidance stress to mimic the symptoms of irritable bowel syndrome, we found that tandospirone relieved anxiety-like behavior and visceral hypersensitivity induced by stress. Meanwhile, stressed rats had increased 5-HT concentration, less 5-HT1A receptor expression, and enhanced theta oscillations in the anterior cingulate cortex (ACC). Furthermore, the power of the theta band in ACC is positively correlated with the level of visceral sensitivity. Activation of 5-HT1A receptors by its agonist, 8-OH-DPAT, to compensate for their effect in ACC reduced the enhancement of theta oscillations in ACC slices in stressed rats, whereas 5-HT1A receptor antagonist, WAY100135, facilitates theta oscillations in slices of normal rats. Tandospirone reduced the enhancement of theta band power in ACC in vitro and in vivo, thus alleviating anxiety-like behavior and visceral hypersensitivity through 5-HT1A receptors in stressed rats. These results suggest a novel mechanism by which tandospirone activates 5-HT1A receptors to relieve stress-induced anxiety and visceral hypersensitivity by suppressing theta oscillation enhancement in ACC.
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Affiliation(s)
- Ting-Ting Zhan
- Department of Gastroenterology, Tongji Institute of Digestive Diseases, Tongji Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Zhi-Yu Dong
- Department of Gastroenterology, Tongji Institute of Digestive Diseases, Tongji Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Li-Sha Yi
- Department of Gastroenterology, Zhangzhou Affiliated Hospital of Fujian Medical University, Zhangzhou, China
| | - Yan Zhang
- Department of Gastroenterology, Tongji Institute of Digestive Diseases, Tongji Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Hui-Hui Sun
- Department of Gastroenterology, Tongji Institute of Digestive Diseases, Tongji Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Hai-Qin Zhang
- Department of Gastroenterology, Tongji Institute of Digestive Diseases, Tongji Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Jun-Wen Wang
- Department of Gastroenterology, Tongji Institute of Digestive Diseases, Tongji Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Ying Chen
- Department of Gastroenterology, Tongji Institute of Digestive Diseases, Tongji Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Ying Huang
- Key Laboratory of Spine and Spinal Cord Injury Repair and Regeneration (Ministry of Education), Department of Physiology and Pharmacology, Tongji Hospital, School of Medicine, Tongji University, Shanghai, China
- *Correspondence: Ying Huang,
| | - Shu-Chang Xu
- Department of Gastroenterology, Tongji Institute of Digestive Diseases, Tongji Hospital, School of Medicine, Tongji University, Shanghai, China
- Shu-Chang Xu,
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Effects of Electroacupuncture on Pain Memory-Related Behaviors and Synchronous Neural Oscillations in the Rostral Anterior Cingulate Cortex in Freely Moving Rats. Neural Plast 2019; 2019:2057308. [PMID: 31223307 PMCID: PMC6541966 DOI: 10.1155/2019/2057308] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Revised: 03/20/2019] [Accepted: 04/11/2019] [Indexed: 12/23/2022] Open
Abstract
Our previous studies have confirmed that electroacupuncture (EA) can effectively intervene in pain memory, but the neural mechanism involved remains unclear. In this study, we observed the effects of EA in regulating pain memory-related behaviors and synchronous neural oscillations in the rostral anterior cingulate cortex (rACC). During nociceptive behavioral testing, pain memory induced a nonpain stimulus that spurred a neural oscillatory reaction similar to that caused by pain stimuli in the rACC. After EA, nonpain stimuli did not induce decreased neural oscillatory activity in the rACC until the presentation of pain stimuli. During aversive behavioral testing, EA, through the downregulation of theta power, inhibited the retrieval of aversive memory and relieved pain memory-induced aversive behaviors. These changes of oscillatory activity may be the hallmarks of EA therapy for pain memory.
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Ou C, Dringenberg HC, Soutar CN. Is hippocampal theta frequency related to individual and sex differences in anxiety-like behaviour? An analysis in male and female Long-Evans rats. Behav Brain Res 2019; 364:366-373. [PMID: 30753872 DOI: 10.1016/j.bbr.2019.01.056] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Revised: 01/15/2019] [Accepted: 01/30/2019] [Indexed: 01/11/2023]
Abstract
Hippocampal theta activity is a prominent slow (4-12 Hz) oscillatory activity pattern generated in the mammalian hippocampal formation. Based on evidence that anxiolytic drugs consistently decrease the frequency of hippocampal theta activity in rodents, hippocampal theta has been linked to anxiety states, leading to the influential theta suppression model of anxiolysis. Surprisingly, very few studies have examined whether hippocampal theta frequency relates to individual or sex differences in anxiety-like behaviour. Here, male and female rats were tested on the elevated plus maze (EPM) to quantify levels of defensive, anxiety-like behaviours. Females exhibited higher levels of open arm exploration (open arm entries and open arm time) compared to males, suggestive of reduced anxiety in females. Subsequently, reticular-elicited hippocampal theta activity was characterized in the same rats under deep urethane anesthesia. There was no sex difference in theta frequency over a range of stimulation intensities. Further, there were no significant correlations between behavioural measures of anxiety in the EPM and theta frequency among individual animals. Theta frequency did, however, decrease following systemic administration of the clinically-used anxiolytic agent buspirone (10 mg/kg). Together, these results suggest that theta frequency does not relate to levels of anxiety-like behaviours in the EPM in male and female rats, challenging the predictive validity of hippocampal theta activity as an index of anxiety in rodents.
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Affiliation(s)
- Christina Ou
- Centre for Neuroscience Studies, Queen's University, Kingston, Ontario, K7L 3N6, Canada
| | - Hans C Dringenberg
- Centre for Neuroscience Studies, Queen's University, Kingston, Ontario, K7L 3N6, Canada; Department of Psychology, Queen's University, Kingston, Ontario, K7L 3N6, Canada
| | - Chloe N Soutar
- Centre for Neuroscience Studies, Queen's University, Kingston, Ontario, K7L 3N6, Canada.
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Liu HY, Yue J, Hu LN, Cheng LF, Wang XS, Wang XJ, Feng B. Chronic minocycline treatment reduces the anxiety-like behaviors induced by repeated restraint stress through modulating neuroinflammation. Brain Res Bull 2018; 143:19-26. [DOI: 10.1016/j.brainresbull.2018.08.015] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 08/08/2018] [Accepted: 08/22/2018] [Indexed: 12/20/2022]
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Berkecz R, Körmöczi T, Tömösi F, Szegedi V, Horváth J, Kovács N, Janáky T. Plasma phospholipid profiling of a mouse model of anxiety disorder by hydrophilic interaction liquid chromatography coupled to high-resolution mass spectrometry. Biomed Chromatogr 2018; 32:e4202. [PMID: 29399846 DOI: 10.1002/bmc.4202] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Revised: 01/22/2018] [Accepted: 01/23/2018] [Indexed: 12/19/2022]
Abstract
Glycerophospholipids (PLs), as amphipathic small molecules and the main constituents of biological membranes, play an important role in several cellular processes, even though their accurate identification from complex biological samples remains a challenge. In this paper, we report a fast and comprehensive HILIC-ESI-MS method for the analysis of glycerophospholipid classes using high-resolution mass spectrometry in negative mode. The final method enabled the quantitative analysis of 130 endogenous PL species in mouse plasma. The application of the method developed was to find differences of plasma PL composition in a mouse model of anxiety disorder. In the case of four PL classes and 35 PL species, significant differences were observed comparing low anxiety-related behavior with high anxiety-related behavior groups. The most characteristic trend was up-regulation in both the PL classes and PL species, and decreases were only detected in two phosphatidylcholines among 35 species in mice having elevated anxiety.
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Affiliation(s)
- Róbert Berkecz
- Department of Medical Chemistry, Faculty of Medicine, University of Szeged, Szeged, Hungary
| | - Tímea Körmöczi
- Department of Medical Chemistry, Faculty of Medicine, University of Szeged, Szeged, Hungary
| | - Ferenc Tömösi
- Department of Medical Chemistry, Faculty of Medicine, University of Szeged, Szeged, Hungary
| | - Viktor Szegedi
- Department of Physiology, Anatomy and Neuroscience, University of Szeged, Szeged, Hungary
| | - János Horváth
- Department of Physiology, Anatomy and Neuroscience, University of Szeged, Szeged, Hungary
| | - Nóra Kovács
- Department of Medical Chemistry, Faculty of Medicine, University of Szeged, Szeged, Hungary
| | - Tamás Janáky
- Department of Medical Chemistry, Faculty of Medicine, University of Szeged, Szeged, Hungary
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Lee KM, Coelho MA, Sern KR, Class MA, Bocz MD, Szumlinski KK. Anxiolytic effects of buspirone and MTEP in the Porsolt Forced Swim Test. CHRONIC STRESS 2017; 1. [PMID: 28884167 PMCID: PMC5584874 DOI: 10.1177/2470547017712985] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Traditionally, a reduction in floating behavior or immobility in the Porsolt forced swim
test is employed as a predictor of anti-depressant efficacy. However, over the past
several years, our studies of alcohol withdrawal-induced negative affect consistently
indicate the coincidence of increased anxiety-related behaviors on various behavioral
tests with reduced immobility in the forced swim test. Further, this
behavioral profile correlates with increased mGlu5 protein expression within limbic brain
regions. As the role for mGlu5 in anxiety is well established, we hypothesized that the
reduced immobility exhibited by alcohol-withdrawn mice when tested in the forced swim test
might reflect anxiety, possibly a hyper-reactivity to the acute swim stressor. Herein, we
evaluated whether or not the decreased forced swim test immobility during alcohol
withdrawal responds to systemic treatment with a behaviorally effective dose of the
prototypical anxiolytic, buspirone (5 mg/kg). We also determined the functional relevance
of the withdrawal-induced increase in mGlu5 expression for forced swim test behavior by
comparing the effects of buspirone to a behaviorally effective dose of the mGlu5 negative
allosteric modulator MTEP (3 mg/kg). Adult male C57BL/6J mice were subjected to a 14-day,
multi-bottle, binge-drinking protocol that elicits hyper-anxiety and increases
glutamate-related protein expression during early withdrawal. Control animals received
only water. At 24-h withdrawal, animals from each drinking condition were subdivided into
groups and treated with an intraperitoneal injection of buspirone, MTEP, or vehicle,
30 min prior to the forced swim test. Drug effects on general locomotor activity were also
assessed. As we reported previously, alcohol-withdrawn animals exhibited significantly
reduced immobility in the forced swim test compared to water controls. Both buspirone and
MTEP significantly increased immobility in alcohol-withdrawn animals, with a modest
increase also seen in water controls. No significant group differences were observed for
locomotor activity, indicating that neither anxiolytic was sedating. These results provide
predictive validity for increased swimming/reduced immobility in the forced swim test as a
model of anxiety and provide novel evidence in favor of mGlu5 inhibition as an effective
therapeutic strategy for treating hyper-anxiety during alcohol withdrawal.
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Affiliation(s)
- Kaziya M Lee
- Department of Psychological and Brain Sciences, University of California Santa Barbara, Santa Barbara, CA, USA, 93106-9660
| | - Michal A Coelho
- Department of Psychological and Brain Sciences, University of California Santa Barbara, Santa Barbara, CA, USA, 93106-9660
| | - Kimberly R Sern
- Department of Psychological and Brain Sciences, University of California Santa Barbara, Santa Barbara, CA, USA, 93106-9660
| | - MacKayla A Class
- Department of Psychological and Brain Sciences, University of California Santa Barbara, Santa Barbara, CA, USA, 93106-9660
| | - Mark D Bocz
- Department of Psychological and Brain Sciences, University of California Santa Barbara, Santa Barbara, CA, USA, 93106-9660
| | - Karen K Szumlinski
- Department of Psychological and Brain Sciences, University of California Santa Barbara, Santa Barbara, CA, USA, 93106-9660.,Department of Molecular, Cellular and Developmental Biology and the Neuroscience Research Institute, University of California Santa Barbara, Santa Barbara, CA, USA, 93106-9625
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