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Doenyas-Barak K, Kutz I, Lang E, Merzbach R, Lev Wiesel R, Boussi-Gross R, Efrati S. The use of hyperbaric oxygen for veterans with PTSD: basic physiology and current available clinical data. Front Neurosci 2023; 17:1259473. [PMID: 38027524 PMCID: PMC10630921 DOI: 10.3389/fnins.2023.1259473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Accepted: 10/09/2023] [Indexed: 12/01/2023] Open
Abstract
Post-traumatic stress disorder (PTSD) affects up to 30% of veterans returning from the combat zone. Unfortunately, a substantial proportion of them do not remit with the current available treatments and thus continue to experience long-term social, behavioral, and occupational dysfunction. Accumulating data implies that the long-standing unremitting symptoms are related to changes in brain activity and structure, mainly disruption in the frontolimbic circuit. Hence, repair of brain structure and restoration of function could be a potential aim of effective treatment. Hyperbaric oxygen therapy (HBOT) has been effective in treating disruptions of brain structure and functions such as stroke, traumatic brain injury, and fibromyalgia even years after the acute insult. These favorable HBOT brain effects may be related to recent protocols that emphasize frequent fluctuations in oxygen concentrations, which in turn contribute to gene expression alterations and metabolic changes that induce neuronal stem cell proliferation, mitochondrial multiplication, angiogenesis, and regulation of the inflammatory cascade. Recently, clinical findings have also demonstrated the beneficial effect of HBOT on veterans with treatment-resistant PTSD. Moderation of intrusive symptoms, avoidance, mood and cognitive symptoms, and hyperarousal were correlated with improved brain function and with diffusion tensor imaging-defined structural changes. This article reviews the current data on the regenerative biological effects of HBOT, and the ongoing research of its use for veterans with PTSD.
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Affiliation(s)
- Keren Doenyas-Barak
- Sagol Center for Hyperbaric Medicine and Research, Shamir Medical Center, Zerifin, Israel
- School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Ilan Kutz
- Sagol Center for Hyperbaric Medicine and Research, Shamir Medical Center, Zerifin, Israel
| | - Erez Lang
- Sagol Center for Hyperbaric Medicine and Research, Shamir Medical Center, Zerifin, Israel
- School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Rachel Merzbach
- Sagol Center for Hyperbaric Medicine and Research, Shamir Medical Center, Zerifin, Israel
- The Louis and Gabi Weisfeld School of Social Work, Bar-Ilan University, Ramat Gan, Israel
| | - Rachel Lev Wiesel
- Sagol Center for Hyperbaric Medicine and Research, Shamir Medical Center, Zerifin, Israel
- The Emili Sagol Creative Arts Therapies Research Center, University of Haifa, Haifa, Israel
| | - Rahav Boussi-Gross
- Sagol Center for Hyperbaric Medicine and Research, Shamir Medical Center, Zerifin, Israel
| | - Shai Efrati
- Sagol Center for Hyperbaric Medicine and Research, Shamir Medical Center, Zerifin, Israel
- School of Medicine, Tel Aviv University, Tel Aviv, Israel
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Lin CC, Yang CP, Cheng PY, Hsiao M, Liu YP. Escitalopram reversibility of the impacts following chronic stress on central 5-HT profiles - Implications to depression and anxiety. Behav Brain Res 2023; 453:114613. [PMID: 37544369 DOI: 10.1016/j.bbr.2023.114613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Revised: 07/31/2023] [Accepted: 08/03/2023] [Indexed: 08/08/2023]
Abstract
Stress is considered a crucial determinant influencing health capacity in modern society. Long-term stress makes individuals more susceptible to mental dysfunctions, among which depression and anxiety are two major mental disorders. The success of using selective serotonin reuptake inhibitors (SSRIs) to treat these two disorders highlights the involvement of the central serotonergic (5-HT) system. Later studies suggest both presynaptic and postsynaptic 5-HT profiles should be considered for the effects of SSRIs, making it difficult to interpret the etiological and therapeutic mechanisms underlying depression and anxiety. The present study aims to examine whether the intervention of escitalopram (Es, 5 mg/kg daily for 14 days) can reverse the behavioral phenotypes of both depression-like [by sucrose preference test (SPT) and forced swim test (FST)] and anxiety-like [by avoidance latency and escape latency in elevated-T maze (ETM)] behaviors, and the brain area-dependent neurochemical changes of 5-HT profiles of the terminal regions regarding both synaptic efflux and tissue levels in rats of chronic mild stress (CMS). Our results showed that: (i) Even mild stresses when presented in an unpredictable and long-term manner, can induce both depression-like and anxiety-like behaviors. (ii) Depressive profile indexed by SPT was more sensitive to reflect the Es effect than that of FST. (iii) Es did not significantly affect the CMS-induced anxiety-like symptoms indexed by ETM. (iv) Changes in the protein expression of 5-HT1A receptors in the prefrontal cortex and hippocampus were compatible with the treatment outcome. Our results contributed to the understanding of stress-induced mood dysfunction and the involvement of central 5-HT.
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Affiliation(s)
- Chen-Cheng Lin
- Laboratory of Cognitive Neuroscience, Department of Physiology, National Defense Medical Center, Taipei, Taiwan; Genomics Research Center, Academia Sinica, Taipei, Taiwan; Department of Physiology, National Defense Medical Center, Taipei, Taiwan
| | - Chiu-Ping Yang
- Laboratory of Cognitive Neuroscience, Department of Physiology, National Defense Medical Center, Taipei, Taiwan
| | - Pao-Yun Cheng
- Department of Physiology, National Defense Medical Center, Taipei, Taiwan
| | - Michael Hsiao
- Genomics Research Center, Academia Sinica, Taipei, Taiwan
| | - Yia-Ping Liu
- Laboratory of Cognitive Neuroscience, Department of Physiology, National Defense Medical Center, Taipei, Taiwan; Department of Physiology, National Defense Medical Center, Taipei, Taiwan; Department of Psychiatry, Cheng Hsin General Hospital, Taipei, Taiwan.
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3
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Burtscher J, Niedermeier M, Hüfner K, van den Burg E, Kopp M, Stoop R, Burtscher M, Gatterer H, Millet GP. The interplay of hypoxic and mental stress: Implications for anxiety and depressive disorders. Neurosci Biobehav Rev 2022; 138:104718. [PMID: 35661753 DOI: 10.1016/j.neubiorev.2022.104718] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 05/26/2022] [Accepted: 05/27/2022] [Indexed: 12/14/2022]
Abstract
Adequate oxygen supply is essential for the human brain to meet its high energy demands. Therefore, elaborate molecular and systemic mechanism are in place to enable adaptation to low oxygen availability. Anxiety and depressive disorders are characterized by alterations in brain oxygen metabolism and of its components, such as mitochondria or hypoxia inducible factor (HIF)-pathways. Conversely, sensitivity and tolerance to hypoxia may depend on parameters of mental stress and the severity of anxiety and depressive disorders. Here we discuss relevant mechanisms of adaptations to hypoxia, as well as their involvement in mental stress and the etiopathogenesis of anxiety and depressive disorders. We suggest that mechanisms of adaptations to hypoxia (including metabolic responses, inflammation, and the activation of chemosensitive brain regions) modulate and are modulated by stress-related pathways and associated psychiatric diseases. While severe chronic hypoxia or dysfunctional hypoxia adaptations can contribute to the pathogenesis of anxiety and depressive disorders, harnessing controlled responses to hypoxia to increase cellular and psychological resilience emerges as a novel treatment strategy for these diseases.
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Affiliation(s)
- Johannes Burtscher
- Institute of Sport Sciences, University of Lausanne, Lausanne, Switzerland; Department of Biomedical Sciences, University of Lausanne, Lausanne, Switzerland.
| | - Martin Niedermeier
- Department of Sport Science, University of Innsbruck, Innsbruck, Austria
| | - Katharina Hüfner
- Department of Psychiatry, Psychotherapy, Psychosomatics and Medical Psychology, University Clinic for Psychiatry II, Innsbruck Medical University, Innsbruck, Austria
| | - Erwin van den Burg
- Department of Psychiatry, Center of Psychiatric Neuroscience (CNP), University Hospital of Lausanne (CHUV), Prilly, Lausanne, Switzerland
| | - Martin Kopp
- Department of Sport Science, University of Innsbruck, Innsbruck, Austria
| | - Ron Stoop
- Department of Psychiatry, Center of Psychiatric Neuroscience (CNP), University Hospital of Lausanne (CHUV), Prilly, Lausanne, Switzerland
| | - Martin Burtscher
- Department of Sport Science, University of Innsbruck, Innsbruck, Austria
| | - Hannes Gatterer
- Institute of Mountain Emergency Medicine, Eurac Research, Bolzano, Italy
| | - Grégoire P Millet
- Institute of Sport Sciences, University of Lausanne, Lausanne, Switzerland; Department of Biomedical Sciences, University of Lausanne, Lausanne, Switzerland
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Lin CC, Cheng PY, Hsiao M, Liu YP. Effects of RU486 in Treatment of Traumatic Stress-Induced Glucocorticoid Dysregulation and Fear-Related Abnormalities: Early versus Late Intervention. Int J Mol Sci 2022; 23:ijms23105494. [PMID: 35628305 PMCID: PMC9141845 DOI: 10.3390/ijms23105494] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 05/08/2022] [Accepted: 05/08/2022] [Indexed: 02/06/2023] Open
Abstract
Central glucocorticoid receptor (GR) activity is enhanced following traumatic events, playing a key role in the stress-related cognitive abnormalities of posttraumatic stress disorder (PTSD). GR antagonists are expected to have potential as pharmacological agents to treat PTSD-related symptoms such as anxiety and fear memory disruption. However, an incubation period is usually required and stress-induced abnormalities do not develop immediately following the trauma; thus, the optimal intervention timing should be considered. Single prolonged stress (SPS) was employed as a rodent PTSD model to examine the effects of early or late (1–7 versus 8–14 days after the SPS) sub-chronic RU486 (a GR antagonist) administration. Behaviorally, fear conditioning and anxiety behavior were assessed using the fear-conditioning test and elevated T-maze (ETM), respectively. Neurochemically, the expressions of GR, FK506-binding proteins 4 and 5 (FKBP4 and FKBP5), and early growth response-1 (Egr-1) were assessed in the hippocampus, medial prefrontal cortex (mPFC), amygdala, and hypothalamus, together with the level of plasma corticosterone. Early RU486 administration could inhibit SPS-induced behavioral abnormalities and glucocorticoid system dysregulation by reversing the SPS-induced fear extinction deficit, and preventing SPS-reduced plasma corticosterone levels and SPS-induced Egr-1 overexpression in the hippocampus. Early RU486 administration following SPS also increased the FKBP5 level in the hippocampus and hypothalamus. Finally, both early and late RU486 administration inhibited the elevated hippocampal FKBP4 level and hypothalamus GR level in the SPS rats. Early intervention with a GR antagonist aids in the correction of traumatic stress-induced fear and anxiety dysregulation.
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Affiliation(s)
- Chen-Cheng Lin
- Laboratory of Cognitive Neuroscience, Department of Physiology and Biophysics, Graduate Institute of Physiology, National Defense Medical Center, Taipei 11490, Taiwan;
- Genomics Research Center, Academia Sinica, Taipei 11529, Taiwan;
| | - Pao-Yun Cheng
- Department of Physiology and Biophysics, Graduate Institute of Physiology, National Defense Medical Center, Taipei 11490, Taiwan;
| | - Michael Hsiao
- Genomics Research Center, Academia Sinica, Taipei 11529, Taiwan;
| | - Yia-Ping Liu
- Laboratory of Cognitive Neuroscience, Department of Physiology and Biophysics, Graduate Institute of Physiology, National Defense Medical Center, Taipei 11490, Taiwan;
- Department of Physiology and Biophysics, Graduate Institute of Physiology, National Defense Medical Center, Taipei 11490, Taiwan;
- Department of Psychiatry, Cheng Hsin General Hospital, Taipei 11220, Taiwan
- Department of Psychiatry, Tri-Service General Hospital, Taipei 11490, Taiwan
- Correspondence:
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5
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Zhao F, Guan S, Fu Y, Wang K, Liu Z, Ng TB. Lycium barbarum polysaccharide attenuates emotional injury of offspring elicited by prenatal chronic stress in rats via regulation of gut microbiota. Biomed Pharmacother 2021; 143:112087. [PMID: 34474339 DOI: 10.1016/j.biopha.2021.112087] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Revised: 04/23/2021] [Accepted: 08/19/2021] [Indexed: 10/20/2022] Open
Abstract
Stress during pregnancy is not only detrimental to a woman's own physical and mental health, but can also cause changes in the intrauterine environment and even have an impact on later growth and development, this study was designed to understand the changes of gut microbiota in the maternal and offspring caused by prenatal chronic stress, and to explore the regulatory effect of LBP on gut microbiota, and then to improve the emotional damage caused by prenatal chronic stress in the offspring. A rat model of prenatal chronic stress was made and used LBP to intervene by gavage. Fresh feces of offspring were collected, the concentration of microbial metabolites were tested by ELISA. Illumina MiSeqPE300 sequencing technology was used to determine the sequence of 16S rRNA V3-V4 of microorganisms. On the PND 42, the emotional function of offspring were tested by open-field test (OFT), sucrose preference test (SPT) and tail of suspend test (TST). Results indicated that stress factors increased the plasma corticosterone level of rats during pregnancy and they appeared depressive behaviors. The body weight of offspring during prenatal chronic stress was lower than the control group, and the plasma corticosterone level was increased. Prenatal chronic stress had a significant impact on emotional performance of the offspring on OFT, SPT and TST. Alpha diversity of gut microbiota and microbiota composition in offspring of prenatal chronic stress was attenuated and some relationships existed between these parameters. LBP treatment reduced offspring's plasma corticosterone level and improved their body weight, changed the emotional function, increased the diversity of gut microbiota. Collectively, these findings disclose that prenatal chronic stress not only causes emotional injury on the offspring, but also changes the gut microbiota of the mother and offspring; LBP may regulate the intestinal flora of the mother, then reducing the influence of stress factors on the emotional injury of offspring.
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Affiliation(s)
- Feng Zhao
- Department of Occupational Health and Environmental Health, School of Public Health and Management, Ningxia Medical University, Yinchuan 750001, China; Key Laboratory of Environmental Factors and Chronic Disease Control, Yinchuan 750001, Ningxia, China
| | - Suzhen Guan
- Department of Occupational Health and Environmental Health, School of Public Health and Management, Ningxia Medical University, Yinchuan 750001, China; Key Laboratory of Environmental Factors and Chronic Disease Control, Yinchuan 750001, Ningxia, China
| | - Youjuan Fu
- Department of Occupational Health and Environmental Health, School of Public Health and Management, Ningxia Medical University, Yinchuan 750001, China; Key Laboratory of Environmental Factors and Chronic Disease Control, Yinchuan 750001, Ningxia, China
| | - Kai Wang
- Department of Occupational Health and Environmental Health, School of Public Health and Management, Ningxia Medical University, Yinchuan 750001, China; Key Laboratory of Environmental Factors and Chronic Disease Control, Yinchuan 750001, Ningxia, China
| | - Zhihong Liu
- Department of Occupational Health and Environmental Health, School of Public Health and Management, Ningxia Medical University, Yinchuan 750001, China; Key Laboratory of Environmental Factors and Chronic Disease Control, Yinchuan 750001, Ningxia, China.
| | - Tzi Bun Ng
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong.
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Ferland-Beckham C, Chaby LE, Daskalakis NP, Knox D, Liberzon I, Lim MM, McIntyre C, Perrine SA, Risbrough VB, Sabban EL, Jeromin A, Haas M. Systematic Review and Methodological Considerations for the Use of Single Prolonged Stress and Fear Extinction Retention in Rodents. Front Behav Neurosci 2021; 15:652636. [PMID: 34054443 PMCID: PMC8162789 DOI: 10.3389/fnbeh.2021.652636] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Accepted: 03/22/2021] [Indexed: 12/14/2022] Open
Abstract
Posttraumatic stress disorder (PTSD) is a mental health condition triggered by experiencing or witnessing a terrifying event that can lead to lifelong burden that increases mortality and adverse health outcomes. Yet, no new treatments have reached the market in two decades. Thus, screening potential interventions for PTSD is of high priority. Animal models often serve as a critical translational tool to bring new therapeutics from bench to bedside. However, the lack of concordance of some human clinical trial outcomes with preclinical animal efficacy findings has led to a questioning of the methods of how animal studies are conducted and translational validity established. Thus, we conducted a systematic review to determine methodological variability in studies that applied a prominent animal model of trauma-like stress, single prolonged stress (SPS). The SPS model has been utilized to evaluate a myriad of PTSD-relevant outcomes including extinction retention. Rodents exposed to SPS express an extinction retention deficit, a phenotype identified in humans with PTSD, in which fear memory is aberrantly retained after fear memory extinction. The current systematic review examines methodological variation across all phases of the SPS paradigm, as well as strategies for behavioral coding, data processing, statistical approach, and the depiction of data. Solutions for key challenges and sources of variation within these domains are discussed. In response to methodological variation in SPS studies, an expert panel was convened to generate methodological considerations to guide researchers in the application of SPS and the evaluation of extinction retention as a test for a PTSD-like phenotype. Many of these guidelines are applicable to all rodent paradigms developed to model trauma effects or learned fear processes relevant to PTSD, and not limited to SPS. Efforts toward optimizing preclinical model application are essential for enhancing the reproducibility and translational validity of preclinical findings, and should be conducted for all preclinical psychiatric research models.
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Affiliation(s)
| | - Lauren E Chaby
- Cohen Veterans Bioscience, New York City, NY, United States
| | - Nikolaos P Daskalakis
- Department of Psychiatry, Harvard Medical School, Boston, MA, United States.,McLean Hospital, Belmont, MA, United States
| | - Dayan Knox
- Department of Psychological and Brain Sciences, University of Delaware, Newark, DE, United States
| | - Israel Liberzon
- Department of Psychiatry, Texas A&M University, Bryan, TX, United States
| | - Miranda M Lim
- Departments of Neurology, Behavioral Neuroscience, Medicine, Oregon Institute of Occupational Health Sciences, Oregon Health & Science University, Portland, OR, United States.,Sleep Disorders Clinic, VA Portland Health Care System, Portland, OR, United States
| | - Christa McIntyre
- Department of Neuroscience, The University of Texas at Dallas, Richardson, TX, United States
| | - Shane A Perrine
- Department of Psychiatry and Behavioral Neurosciences, Wayne State University School of Medicine, Detroit, MI, United States.,Research Service, John. D. Dingell VA Medical Center, Detroit, MI, United States
| | - Victoria B Risbrough
- Department of Psychiatry, University of California, San Diego, La Jolla, CA, United States.,Center for Excellence in Stress and Mental Health, VA San Diego Healthcare System, San Diego, CA, United States
| | - Esther L Sabban
- Department of Biochemistry and Molecular Biology, New York Medical College, Valhalla, NY, United States
| | | | - Magali Haas
- Cohen Veterans Bioscience, New York City, NY, United States
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7
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Shwe T, Bo-Htay C, Ongnok B, Chunchai T, Jaiwongkam T, Kerdphoo S, Kumfu S, Pratchayasakul W, Pattarasakulchai T, Chattipakorn N, Chattipakorn SC. Hyperbaric oxygen therapy restores cognitive function and hippocampal pathologies in both aging and aging-obese rats. Mech Ageing Dev 2021; 195:111465. [PMID: 33662435 DOI: 10.1016/j.mad.2021.111465] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Revised: 01/10/2021] [Accepted: 02/24/2021] [Indexed: 12/14/2022]
Abstract
The population of obese-elderly has increased prominently around the world. Both aging and obesity are major factors of neurodegeneration. The present study hypothesizes that HBOT attenuates metabolic disturbance, cognitive decline, hippocampal pathologies in aging and aging-obese model. Sixty Wistar rats were separated into 2 groups to receive normal-diet (ND) or high-fat diet (HFD) for 22 weeks. At week 13, ND rats were divided into two subgroups to receive vehicle (0.9 % NSS, s.c) or d-gal (150 mg/kg/d, s.c) for total 10 weeks. HFD rats were injected only d-gal (150 mg/kg/d, s.c; HFDD) for total 10 weeks. At week 20, rats in each subgroup were given sham-treatment (1ATA, 80 L/min, 80 min/day), or HBOT (2ATA, pure O2, 250 L/min, 80 min/day) for 14 days. Novel object location test, metabolic parameters, and hippocampal pathologies were determined after HBOT. d-gal induced insulin resistance, increased oxidative stress, autophagy impairment, microglial hyperactivation, apoptosis, synaptic dysplasticity which resulted in cognitive impairment. d-gal-treated HFD-fed rats had the highest levels of oxidative stress, apoptosis, dendritic spine loss. HBOT attenuated insulin resistance, cognitive impairment, hippocampal aging and pathologies in both models. These findings suggest that HBOT restored insulin sensitivity, hippocampal functions, cognition in aging and aging-obese models.
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Affiliation(s)
- Thazin Shwe
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand; Cardiac Electrophysiology Unit, Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand; Center of Excellence in Cardiac Electrophysiology, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Cherry Bo-Htay
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand; Cardiac Electrophysiology Unit, Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand; Center of Excellence in Cardiac Electrophysiology, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Benjamin Ongnok
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand; Cardiac Electrophysiology Unit, Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand; Center of Excellence in Cardiac Electrophysiology, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Titikorn Chunchai
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand; Center of Excellence in Cardiac Electrophysiology, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Thidarat Jaiwongkam
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand; Center of Excellence in Cardiac Electrophysiology, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Sasiwan Kerdphoo
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand; Center of Excellence in Cardiac Electrophysiology, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Sirinart Kumfu
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand; Cardiac Electrophysiology Unit, Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand; Center of Excellence in Cardiac Electrophysiology, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Wasana Pratchayasakul
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand; Cardiac Electrophysiology Unit, Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand; Center of Excellence in Cardiac Electrophysiology, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Thienchai Pattarasakulchai
- Hyperbaric Oxygen Therapy Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Nipon Chattipakorn
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand; Cardiac Electrophysiology Unit, Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand; Center of Excellence in Cardiac Electrophysiology, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Siriporn C Chattipakorn
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand; Center of Excellence in Cardiac Electrophysiology, Chiang Mai University, Chiang Mai, 50200, Thailand; Department of Oral Biology and Diagnostic Sciences, Faculty of Dentistry, Chiang Mai University, Chiang Mai, 50200, Thailand.
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8
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Hyperbaric Oxygen Therapy Effect on “Kinesia Paradoxa” Brain Circuits. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2021; 1339:139-146. [DOI: 10.1007/978-3-030-78787-5_19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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9
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Lin CC, Cheng PY, Liu YP. Effects of early life social experience on fear extinction and related glucocorticoid profiles - behavioral and neurochemical approaches in a rat model of PTSD. Behav Brain Res 2020; 391:112686. [PMID: 32428628 DOI: 10.1016/j.bbr.2020.112686] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 04/30/2020] [Accepted: 04/30/2020] [Indexed: 01/06/2023]
Abstract
People may agonize over an intrusive fear-inducing memory even when the traumatic event has passed, which is the principle manifestation of posttraumatic stress disorder (PTSD). However, many traumatized people do not present symptoms of PTSD, implying that certain hidden factors help those individuals to cope with the traumatic stress. Increasing evidence suggests that early life experience may serve as a predisposing factor in the development of PTSD. For example, early life social deprivation disrupts the glucocorticoid system, one of the biological abnormalities of PTSD. By employing isolation rearing (IR) with a subsequent single prolonged stress (SPS) paradigm, we examined the hypothesis that early-life social experience may change the outcome of traumatic stress in both behavioral and neurochemical profiles. Behaviorally, the performance of rats on a Pavlovian fear conditioning test was measured to evaluate their retrieval ability of fear memory extinction. Neurochemically, plasma corticosterone levels and glucocorticoid receptor (GR), FK506-binding proteins 4 and 5 (FKBP4 and FKBP5) and early growth response-1 (Egr-1) expression were measured in GR-abundant brain areas, including the hypothalamus, medial prefrontal cortex, and hippocampus. Our results demonstrated an area-dependent IR effect on the SPS outcomes. IR prevented the SPS-impaired fear extinction retrieval ability and averted the SPS-elevated expression of GR, FKBP4, and Egr-1 in the hippocampus, whereas it did not change the SPS-reduced plasma corticosterone levels and SPS-enhanced GR activity in the mPFC and hypothalamus. The present study provides some new insights to support the hypothesis that early-life experience may play a role in the occurrence of PTSD.
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Affiliation(s)
- Chen-Cheng Lin
- Graduate Institute of Life Sciences, National Defense Medical Center, Taipei 11490, Taiwan; Department of Psychiatry, Cheng Hsin General Hospital, Taipei 11220, Taiwan; Laboratory of Cognitive Neuroscience, Department of Physiology, National Defense Medical Center, Taipei 11490, Taiwan
| | - Pao-Yun Cheng
- Department of Physiology, National Defense Medical Center, Taipei 11490, Taiwan
| | - Yia-Ping Liu
- Graduate Institute of Life Sciences, National Defense Medical Center, Taipei 11490, Taiwan; Department of Psychiatry, Cheng Hsin General Hospital, Taipei 11220, Taiwan; Laboratory of Cognitive Neuroscience, Department of Physiology, National Defense Medical Center, Taipei 11490, Taiwan.
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10
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Lin CC, Chen TY, Cheng PY, Liu YP. Early life social experience affects adulthood fear extinction deficit and associated dopamine profile abnormalities in a rat model of PTSD. Prog Neuropsychopharmacol Biol Psychiatry 2020; 101:109914. [PMID: 32165120 DOI: 10.1016/j.pnpbp.2020.109914] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 02/13/2020] [Accepted: 03/06/2020] [Indexed: 12/20/2022]
Abstract
Individuals may develop fear extinction deficits after life-threatening traumatic events; such deficits indicate posttraumatic stress disorder (PTSD). Because the occurrence of this disorder differs among people who have experienced trauma, hidden underlying factors should be determined. Increasing evidence suggests the involvement of neuronal dysregulation of information processes or cognitive function during development. This neuronal dysregulation is caused by disturbances in dopamine (DA) transmission within the fear circuit, which comprises the medial prefrontal cortex (mPFC), amygdala, and hippocampus. Single prolonged stress (SPS) combined with an isolation rearing (IR) paradigm was used to randomly assign rats to four groups [social rearing-no SPS (SR-NS), SR-SPS, IR-NS, and IR-SPS], and their performance in prepulse inhibition (PPI) and on Pavlovian fear conditioning tests was assessed. Tissue DA levels and the expression of DA receptors (D1R and D2R) in the fear circuit were measured at the end of the experiment. Our results indicated that PPI deficits and fear extinction problems were specific to rats subjected to IR and SPS, respectively. Furthermore, IR-induced PPI deficits were not influenced by SPS, but SPS-induced fear extinction retrieval impairment could be adjusted according to previous IR experiences. Neurochemically, tissue DA levels and D1R expression in the mPFC and amygdala were nonspecifically reduced by IR and SPS, whereas D2R expression in the mPFC and amygdala was higher in IR-SPS than in SR-SPS rats. These findings suggest that early life experiences may influence fear responses in adulthood through a change in DA profiles within the fear circuit.
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Affiliation(s)
- Chen-Cheng Lin
- Graduate Institute of Life Sciences, National Defense Medical Center, Taipei 11490, Taiwan; Department of Psychiatry, Cheng Hsin General Hospital, Taipei 11220, Taiwan; Laboratory of Cognitive Neuroscience, Department of Physiology, National Defense Medical Center, Taipei 11490, Taiwan
| | - Tzung-Yan Chen
- Department of Psychiatry, Cheng Hsin General Hospital, Taipei 11220, Taiwan; Laboratory of Cognitive Neuroscience, Department of Physiology, National Defense Medical Center, Taipei 11490, Taiwan
| | - Pao-Yun Cheng
- Department of Physiology, National Defense Medical Center, Taipei 11490, Taiwan.
| | - Yia-Ping Liu
- Graduate Institute of Life Sciences, National Defense Medical Center, Taipei 11490, Taiwan; Department of Psychiatry, Cheng Hsin General Hospital, Taipei 11220, Taiwan; Laboratory of Cognitive Neuroscience, Department of Physiology, National Defense Medical Center, Taipei 11490, Taiwan.
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Hyperbaric Oxygen Therapy and Mastectomy Flap Ischemia following Nipple-Sparing Mastectomy and Immediate Breast Reconstruction. Plast Reconstr Surg 2020; 145:1114e-1115e. [PMID: 32464040 DOI: 10.1097/prs.0000000000006881] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Abstract
Central nervous system injuries are a leading cause of death and disability worldwide. Although the exact pathophysiological mechanisms of various brain injuries vary, central nervous system injuries often result in an inflammatory response, and subsequently lead to brain damage. This suggests that neuroprotection may be necessany in the treatment of multiple disease models. The use of medical gases as neuroprotective agents has gained great attention in the medical field. Medical gases include common gases, such as oxygen, hydrogen and carbon dioxide; hydrogen sulphide and nitric oxide that have been considered toxic; volatile anesthetic gases, such as isoflurane and sevoflurane; and inert gases like helium, argon, and xenon. The neuroprotection from these medical gases has been investigated in experimental animal models of various types of brain injuries, such as traumatic brain injury, stroke, subarachnoid hemorrhage, cerebral ischemic/reperfusion injury, and neurodegenerative diseases. Nevertheless, the transition into the clinical practice is still lagging. This delay could be attributed to the contradictory paradigms and the conflicting results that have been obtained from experimental models, as well as the presence of inconsistent reports regarding their safety. In this review, we summarize the potential mechanisms underlying the neuroprotective effects of medical gases and discuss possible candidates that could improve the outcomes of brain injury.
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Affiliation(s)
- Yue-Zhen Wang
- Department of Anesthesiology, The 2nd Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, China
| | - Ting-Ting Li
- Department of Anesthesiology, The 2nd Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, China
| | - Hong-Ling Cao
- Department of Anesthesiology, The 2nd Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, China
| | - Wan-Chao Yang
- Department of Anesthesiology, The 2nd Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, China
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Meng X, Zhang X, Su Y, Gu Z, Xie X, Chang Y, Bao J. Hyperbaric oxygen treatment mitigates liver damage in mice with noise exposure. Clin Exp Pharmacol Physiol 2020; 47:1564-1574. [PMID: 32347967 DOI: 10.1111/1440-1681.13330] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2020] [Revised: 04/08/2020] [Accepted: 04/23/2020] [Indexed: 11/28/2022]
Abstract
Noise exposure relates to various pathological disorders including liver damage, preventive measures of which are being demanded. Hyperbaric oxygen treatment (HBOT), as a non-invasive procedure, exerts convincing therapeutic potency on multiple liver diseases. The efficacy of HBOT in mitigating noise induced liver damage (NILD) and associated mechanisms would be elucidated here. Mice were subject to broad band noise (20-20k Hz, 90-110 dB) for 5 days by 3 hours/day. HBOT with 2.5 atmosphere absolute (ata) was employed before noise exposure. Morphology of liver tissue was examined by hematoxylin-eosin (HE) staining. Oil Red O (ORO), transferase-mediated dUTP nick end labelling (TUNEL) test and western blot were utilized to detect lipid accumulation, apoptotic cells and protein expression, respectively. Ceramide (Cer) level was assayed by immunohistochemistry (IHC) analysis. With noise exposure, conspicuous structural derangement and lipid deposition occurred in liver tissue of mice, which was alleviated significantly by the application of HBOT. Meanwhile, HBOT reduced the proportion of apoptotic hepatocytes, restraining the superoxide production in noise exposed mice. In view of underlying mechanisms, noise enhanced the acid sphingomyelinase (ASM) protein expression and the Cer generation in liver tissue of mice which was reversed substantially by HBOT. Altogether, HBOT ameliorates the structural and functional derangement of liver by neutralizing the ASM/Cer pathway in noise exposed mice.
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Affiliation(s)
- Xingxing Meng
- Department of Aerospace Hygiene, Fourth Military Medical University, Xi'an, China
| | - Xi Zhang
- Department of Aerospace Hygiene, Fourth Military Medical University, Xi'an, China
| | - Yuting Su
- Department of Aerospace Hygiene, Fourth Military Medical University, Xi'an, China
| | - Zhenghui Gu
- Department of Aerospace Hygiene, Fourth Military Medical University, Xi'an, China
| | - Xiaoping Xie
- Department of Aerospace Hygiene, Fourth Military Medical University, Xi'an, China
| | - Yaoming Chang
- Department of Aerospace Hygiene, Fourth Military Medical University, Xi'an, China
| | - Junxiang Bao
- Department of Aerospace Hygiene, Fourth Military Medical University, Xi'an, China
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Effects of Oxytocin on Fear Memory and Neuroinflammation in a Rodent Model of Posttraumatic Stress Disorder. Int J Mol Sci 2018; 19:ijms19123848. [PMID: 30513893 PMCID: PMC6321616 DOI: 10.3390/ijms19123848] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Revised: 11/26/2018] [Accepted: 11/29/2018] [Indexed: 12/27/2022] Open
Abstract
Posttraumatic stress disorder (PTSD) is a trauma-induced mental disorder characterized by fear extinction abnormalities, which involve biological dysfunctions among fear circuit areas in the brain. Oxytocin (OXT) is a neuropeptide that regulates sexual reproduction and social interaction and has recently earned specific attention due to its role in adjusting neurobiological and behavioral correlates of PTSD; however, the mechanism by which this is achieved remains unclear. The present study aimed to examine whether the effects of OXT on traumatic stress-induced abnormalities of fear extinction (specifically induced by single prolonged stress (SPS), an animal model of PTSD) are associated with pro-inflammatory cytokines. Seven days after SPS, rats received intranasal OXT 40 min before a cue-dependent Pavlovian fear conditioning-extinction test in which rats' freezing degree was used to reflect the outcome of fear extinction. We also measured mRNA expression of IL-1β, IFN-γ, and TNF-α in the medial prefrontal cortex (mPFC), hippocampus, and amygdala at the end of the study, together with plasma oxytocin, corticosterone, IL-1β, IFN-γ, and TNF-α, to reflect the central and peripheral changes of stress-related hormones and cytokines after SPS. Our results suggested that intranasal OXT effectively amends the SPS-impaired behavior of fear extinction retrieval. Moreover, it neurochemically reverses the SPS increase in pro-inflammatory cytokines; thus, IL-1β and IFN-γ can be further blocked by the OXT antagonist atosiban (ASB) in the hippocampus. Peripheral profiles revealed a similar response pattern to SPS of OXT and corticosterone (CORT), and the SPS-induced increase in plasma levels of IL-1β and TNF-α could be reduced by OXT. The present study suggests potential therapeutic effects of OXT in both behavioral and neuroinflammatory profiles of PTSD.
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