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Norman H, Munson A, Cortese D, Koeck B, Killen SS. The interplay between sleep and ecophysiology, behaviour and responses to environmental change in fish. J Exp Biol 2024; 227:jeb247138. [PMID: 38860399 PMCID: PMC11213526 DOI: 10.1242/jeb.247138] [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] [Indexed: 06/12/2024]
Abstract
Evidence of behavioural sleep has been observed in every animal species studied to date, but current knowledge of the behaviour, neurophysiology and ecophysiology associated with sleep is concentrated on mammals and birds. Fish are a hugely diverse group that can offer novel insights into a variety of sleep-related behaviours across environments, but the ecophysiological relevance of sleep in fish has been largely overlooked. Here, we systematically reviewed the literature to assess the current breadth of knowledge on fish sleep, and surveyed the diverse physiological effects and behaviours associated with sleep. We also discuss possible ways in which unstudied external factors may alter sleep behaviours. For example, predation risk may alter sleep patterns, as has been shown in mammalian, avian and reptilian species. Other environmental factors - such as water temperature and oxygen availability - have the potential to alter sleep patterns in fish differently than for terrestrial endotherms. Understanding the ecological influences on sleep in fish is vital, as sleep deprivation has the potential to affect waking behaviour and fitness owing to cognitive and physiological impairments, possibly affecting ecological phenomena and sensitivity to environmental stressors in ways that have not been considered.
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Affiliation(s)
- Helena Norman
- School of Biodiversity, One Health, and Comparative Medicine, University of Glasgow, Glasgow G12 8QQ, UK
| | - Amelia Munson
- School of Biodiversity, One Health, and Comparative Medicine, University of Glasgow, Glasgow G12 8QQ, UK
| | - Daphne Cortese
- School of Biodiversity, One Health, and Comparative Medicine, University of Glasgow, Glasgow G12 8QQ, UK
| | - Barbara Koeck
- School of Biodiversity, One Health, and Comparative Medicine, University of Glasgow, Glasgow G12 8QQ, UK
| | - Shaun S. Killen
- School of Biodiversity, One Health, and Comparative Medicine, University of Glasgow, Glasgow G12 8QQ, UK
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Liu B, Yuan M, Yang M, Zhu H, Zhang W. The Effect of High-Altitude Hypoxia on Neuropsychiatric Functions. High Alt Med Biol 2024; 25:26-41. [PMID: 37815821 DOI: 10.1089/ham.2022.0136] [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] [Indexed: 10/11/2023] Open
Abstract
Liu, Bo, Minlan Yuan, Mei Yang, Hongru Zhu, and Wei Zhang. The effect of high-altitude hypoxia on neuropsychiatric functions. High Alt Med Biol. 25:26-41, 2024. Background: In recent years, there has been a growing popularity in engaging in activities at high altitudes, such as hiking and work. However, these high-altitude environments pose risks of hypoxia, which can lead to various acute or chronic cerebral diseases. These conditions include common neurological diseases such as acute mountain sickness (AMS), high-altitude cerebral edema, and altitude-related cerebrovascular diseases, as well as psychiatric disorders such as anxiety, depression, and psychosis. However, reviews of altitude-related neuropsychiatric conditions and their potential mechanisms are rare. Methods: We conducted searches on PubMed and Google Scholar, exploring existing literature encompassing preclinical and clinical studies. Our aim was to summarize the prevalent neuropsychiatric diseases induced by altitude hypoxia, the potential pathophysiological mechanisms, as well as the available pharmacological and nonpharmacological strategies for prevention and intervention. Results: The development of altitude-related cerebral diseases may arise from various pathogenic processes, including neurovascular alterations associated with hypoxia, cytotoxic responses, activation of reactive oxygen species, and dysregulation of the expression of hypoxia inducible factor-1 and nuclear factor erythroid 2-related factor 2. Furthermore, the interplay between hypoxia-induced neurological and psychiatric changes is believed to play a role in the progression of brain damage. Conclusions: While there is some evidence pointing to pathophysiological changes in hypoxia-induced brain damage, the precise mechanisms responsible for neuropsychiatric alterations remain elusive. Currently, the range of prevention and intervention strategies available is primarily focused on addressing AMS, with a preference for prevention rather than treatment.
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Affiliation(s)
- Bo Liu
- Mental Health Center and Psychiatric Laboratory, West China Hospital of Sichuan University, Chengdu, China
- Zigong Mental Health Center, Zigong, China
| | - Minlan Yuan
- Mental Health Center and Psychiatric Laboratory, West China Hospital of Sichuan University, Chengdu, China
| | - Mei Yang
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, West China School of Basic Medical Sciences and Forensic Medicine, Chengdu, Sichuan
| | - Hongru Zhu
- Mental Health Center and Psychiatric Laboratory, West China Hospital of Sichuan University, Chengdu, China
| | - Wei Zhang
- Mental Health Center and Psychiatric Laboratory, West China Hospital of Sichuan University, Chengdu, China
- West China Biomedical Big Data Center, West China Hospital, Sichuan University, Chengdu, China
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Wu R, Guang Z, Wang Y, Xue B, Zhang A, Dawa Y, Guo C, Tong X, Wang S, Lu C. Eating disorders symptoms and depressive symptoms in Chinese Tibetan University students: a network analysis. BMC Psychiatry 2023; 23:957. [PMID: 38129774 PMCID: PMC10734136 DOI: 10.1186/s12888-023-05452-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Accepted: 12/08/2023] [Indexed: 12/23/2023] Open
Abstract
BACKGROUND Depression is being increasingly acknowledged as a global public health concern, and following this trend, attention towards eating disorders (EDs) has surged within China's national consciousness. EDs symptoms frequently coexist with various mental health conditions, including depression. However, research focusing on EDs symptoms and depressive symptoms among Tibetan students in China remains scant. This study employs network analysis to estimate the relational network between EDs and depressive symptoms. METHODS Tibetan (n = 2,582) and Han (n = 1,743) students from two universities in the Xizang Autonomous Region, China, completed the Eating Attitude Test-26 (EAT-26) and the Patient Health Questionnaire-9 (PHQ-9). We estimated the network structure of EDs symptoms and depressive symptoms, identified central and bridge symptoms, and examined whether network characteristics differed by gender and ethnic. RESULTS The core symptoms identified within this study were Calorie_awareness, Desire_to_thin and Fatigue. Conversely, bridge symptoms included Appetite, Suicide, Anhedonia, Guilty, Body_fat_awareness, and Food_preoccupation. The study also revealed no significant gender differences within the network model. However, disparities among ethnic groups were observed within the network structure. CONCLUSIONS Our study examined the correlation between EDs symptoms and depressive symptoms in Tibetan college students. Focusing on the individual's quest for the perfect body shape and some Tibetan students' appetite problems - potentially stemming from transitioning to a new university environment, adapting to the school canteen's diet, or being away from their hometown - could aid in the prevention and management of EDs and depression symptoms. It could reduce the incidence of complications by helping students maintain good physical and mental health. Concurrently, our research provides insights into the relatively higher levels of depression triggered by the unique plateau environment.
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Affiliation(s)
- Ruipeng Wu
- Key Laboratory for Molecular Genetic Mechanisms and Intervention Research On High Altitude Disease of Tibet Autonomous Region, School of Medicine, Xizang Minzu University, 712082, Xianyang, People's Republic of China
- Key Laboratory of High Altitude Hypoxia Environment and Life Health, School of Medicine, Xizang Minzu University, 712082, Xianyang, People's Republic of China
- Key Laboratory of Environmental Medicine and Engineering of Ministry of Education, Department of Nutrition and Food Hygiene, School of Public Health, Southeast University, 210009, Nanjing, People's Republic of China
| | - Zixuan Guang
- Key Laboratory for Molecular Genetic Mechanisms and Intervention Research On High Altitude Disease of Tibet Autonomous Region, School of Medicine, Xizang Minzu University, 712082, Xianyang, People's Republic of China
| | - Yingting Wang
- Key Laboratory for Molecular Genetic Mechanisms and Intervention Research On High Altitude Disease of Tibet Autonomous Region, School of Medicine, Xizang Minzu University, 712082, Xianyang, People's Republic of China
- Key Laboratory of High Altitude Hypoxia Environment and Life Health, School of Medicine, Xizang Minzu University, 712082, Xianyang, People's Republic of China
| | - Bei Xue
- Key Laboratory for Molecular Genetic Mechanisms and Intervention Research On High Altitude Disease of Tibet Autonomous Region, School of Medicine, Xizang Minzu University, 712082, Xianyang, People's Republic of China
| | - Ailing Zhang
- Key Laboratory for Molecular Genetic Mechanisms and Intervention Research On High Altitude Disease of Tibet Autonomous Region, School of Medicine, Xizang Minzu University, 712082, Xianyang, People's Republic of China
| | - Yundan Dawa
- Department of Tibetan Medicine, University of Tibetan Medicine(UTC), 850000, Lhasa, People's Republic of China
| | - Chenghui Guo
- Key Laboratory for Molecular Genetic Mechanisms and Intervention Research On High Altitude Disease of Tibet Autonomous Region, School of Medicine, Xizang Minzu University, 712082, Xianyang, People's Republic of China
| | - Xiaopeng Tong
- Key Laboratory for Molecular Genetic Mechanisms and Intervention Research On High Altitude Disease of Tibet Autonomous Region, School of Medicine, Xizang Minzu University, 712082, Xianyang, People's Republic of China
| | - Shaokang Wang
- Key Laboratory for Molecular Genetic Mechanisms and Intervention Research On High Altitude Disease of Tibet Autonomous Region, School of Medicine, Xizang Minzu University, 712082, Xianyang, People's Republic of China.
- Key Laboratory of Environmental Medicine and Engineering of Ministry of Education, Department of Nutrition and Food Hygiene, School of Public Health, Southeast University, 210009, Nanjing, People's Republic of China.
| | - Ciyong Lu
- Department of Medical Statistics and Epidemiology, School of Public Health, Sun Yat-Sen University, 510080, Guangzhou, People's Republic of China.
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Wang L, Zhou B, Yang C, Pan S, Huang Y, Wang J. The Effect of Ultrahigh Altitude on the Mental Health of Civil Servants in Western China Based on Propensity Score Matching. High Alt Med Biol 2023; 24:193-200. [PMID: 34324381 DOI: 10.1089/ham.2020.0086] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Wang, Luyao, Bo Zhou, Chenghui Yang, Shuya Pan, Yulan Huang, and Jinyu Wang. The effect of ultrahigh altitude on the mental health of civil servants in western China based on propensity score matching. High Alt Med Biol. 24:193-200, 2023. Objective: This study aims to analyze the net effect of ultrahigh altitude on the mental health of civil servants in western China after adjusting for sociodemographic factors. Methods: A cross-sectional study was performed to survey the mental health of 2,939 civil servants working at an altitude of more than 1,500 m in 13 areas of the Tibetan Qiang Autonomous Prefecture of Ngawa using the Insomnia Severity Index Questionnaire, 7-item Generalized Anxiety Disorder Scale, and Patient Health Questionnaire-9. Ultrahigh altitude refers to an area above 3,500 m above sea level, which may have an impact on the sleep and mood of residents. Therefore, our research was divided into two groups based on altitude (ultrahigh altitude >3,500 m; high altitude = 1,500-3,400 m). Propensity score matching (PSM) was used to control for sociodemographic factors and compare the differences in mental health between the two groups. Results: After kernel matching, the mean bias of the covariates was reduced from 21.6 to 1.8. The severity of insomnia, depression, and anxiety in civil servants at ultrahigh altitudes was still significantly greater than that in civil servants at high altitudes after controlling for sociodemographic factors, and the average treatment effects on the treated were 1.39, 1.35, and 0.80, respectively; the results were significant (α < 0.01). PSM regression analysis further showed that for every 100 m increase in altitude, the severity of anxiety, depression, and insomnia increased by 0.042 points (p < 0.001), 0.063 points (p < 0.001), and 0.070 points (p < 0.001), respectively, all of which were higher than those obtained with ordinary least squares regression. Conclusion: Ultrahigh altitude significantly increases the severity of insomnia, depression, and anxiety after adjusting for sociodemographic factors.
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Affiliation(s)
- Luyao Wang
- Sichuan Provincial Center for Mental Health, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, Chengdu, China
- Key Laboratory of Psychosomatic Medicine, Chinese Academy of Medical Sciences, Chengdu, China
| | - Bo Zhou
- Sichuan Provincial Center for Mental Health, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, Chengdu, China
- Key Laboratory of Psychosomatic Medicine, Chinese Academy of Medical Sciences, Chengdu, China
| | - Chenghui Yang
- Sichuan Provincial Center for Mental Health, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, Chengdu, China
- Key Laboratory of Psychosomatic Medicine, Chinese Academy of Medical Sciences, Chengdu, China
| | - Shuya Pan
- Sichuan Provincial Center for Mental Health, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, Chengdu, China
- Key Laboratory of Psychosomatic Medicine, Chinese Academy of Medical Sciences, Chengdu, China
| | - Yulan Huang
- Sichuan Provincial Center for Mental Health, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, Chengdu, China
- Key Laboratory of Psychosomatic Medicine, Chinese Academy of Medical Sciences, Chengdu, China
| | - Jinyu Wang
- Sichuan Provincial Center for Mental Health, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, Chengdu, China
- Key Laboratory of Psychosomatic Medicine, Chinese Academy of Medical Sciences, Chengdu, China
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Lafuente JV, Sharma A, Feng L, Muresanu DF, Nozari A, Tian ZR, Buzoianu AD, Sjöquist PO, Wiklund L, Sharma HS. Nanowired Delivery of Mesenchymal Stem Cells with Antioxidant Compound H-290/51 Reduces Exacerbation of Methamphetamine Neurotoxicity in Hot Environment. ADVANCES IN NEUROBIOLOGY 2023; 32:317-352. [PMID: 37480465 DOI: 10.1007/978-3-031-32997-5_8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/24/2023]
Abstract
Military personnel are often exposed to hot environments either for combat operations or peacekeeping missions. Hot environment is a severe stressful situation leading to profound hyperthermia, fatigue and neurological impairments. To avoid stressful environment, some people frequently use methamphetamine (METH) or other psychostimulants to feel comfortable under adverse situations. Our studies show that heat stress alone induces breakdown of the blood-brain barrier (BBB) and edema formation associated with reduced cerebral blood flow (CBF). On the other hand, METH alone induces hyperthermia and neurotoxicity. These effects of METH are exacerbated at high ambient temperatures as seen with greater breakdown of the BBB and brain pathology. Thus, a combination of METH use at hot environment may further enhance the brain damage-associated behavioral dysfunctions. METH is well known to induce severe oxidative stress leading to brain pathology. In this investigation, METH intoxication at hot environment was examined on brain pathology and to explore suitable strategies to induce neuroprotection. Accordingly, TiO2-nanowired delivery of H-290/51 (150 mg/kg, i.p.), a potent chain-breaking antioxidant in combination with mesenchymal stem cells (MSCs), is investigated in attenuating METH-induced brain damage at hot environment in model experiments. Our results show that nanodelivery of H-290/51 with MSCs significantly enhanced CBF and reduced BBB breakdown, edema formation and brain pathology following METH exposure at hot environment. These observations are the first to point out that METH exacerbated brain pathology at hot environment probably due to enhanced oxidative stress, and MSCs attenuate these adverse effects, not reported earlier.
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Affiliation(s)
- José Vicente Lafuente
- LaNCE, Department Neuroscience, University of the Basque Country (UPV/EHU), Leioa, Bizkaia, Spain
| | - Aruna Sharma
- International Experimental Central Nervous System Injury & Repair (IECNSIR), Department of Surgical Sciences, Anesthesiology & Intensive Care Medicine, Uppsala University Hospital, Uppsala University, Uppsala, Sweden
| | - Lianyuan Feng
- Department of Neurology, Bethune International Peace Hospital, Zhongshan, Hebei Province, China
| | - Dafin F Muresanu
- Department Clinical Neurosciences, University of Medicine & Pharmacy, Cluj-Napoca, Romania
- "RoNeuro" Institute for Neurological Research and Diagnostic, Cluj-Napoca, Romania
| | - Ala Nozari
- Anesthesiology & Intensive Care, Chobanian & Avedisian School of Medicine, Boston University, Boston, MA, USA
| | - Z Ryan Tian
- Department Chemistry & Biochemistry, University of Arkansas, Fayetteville, AR, USA
| | - Anca D Buzoianu
- Department of Clinical Pharmacology and Toxicology, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Per-Ove Sjöquist
- Division of Cardiology, Department of Medicine, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - Lars Wiklund
- International Experimental Central Nervous System Injury & Repair (IECNSIR), Department of Surgical Sciences, Anesthesiology & Intensive Care Medicine, Uppsala University Hospital, Uppsala University, Uppsala, Sweden
| | - Hari Shanker Sharma
- International Experimental Central Nervous System Injury & Repair (IECNSIR), Department of Surgical Sciences, Anesthesiology & Intensive Care Medicine, Uppsala University Hospital, Uppsala University, Uppsala, Sweden.
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Zegarra-Rodríguez CA, Plasencia-Dueñas NR, Failoc-Rojas VE. Disparities in the prevalence of screened depression at different altitudes in Peru: A retrospective analysis of the ENDES 2019. PLoS One 2022; 17:e0278947. [PMID: 36542597 PMCID: PMC9770421 DOI: 10.1371/journal.pone.0278947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Accepted: 11/24/2022] [Indexed: 12/24/2022] Open
Abstract
INTRODUCTION Depression is a public health concern, nearing 1.5 million cases and accounting for 9.7% of years lost due to disability. Several factors, including altitude, contribute to its development. Altitude has become a topic for recent research, but its association with depressive symptoms has not been fully clarified. Therefore, this study aimed to determine the association between altitude and depressive symptoms in the Peruvian population. METHODS A retrospective, cross-sectional study of the 2019 Demographic and Family Health Survey (ENDES in Spanish) was conducted. The dependent variable, depressive symptoms, was measured using the Patient Health Questionnaire (PHQ-9) and the independent variable, altitude, was categorized into: <1500 meters above sea level (masl), 1500-2499 masl and ≥2500 masl. To evaluate the association between altitude and depressive symptoms, we used Poisson regression model, constructing crude and multiple models. RESULTS Of those living at 1500 to 2499 masl and ≥2500 masl, 7.23% and 7.12% had depressive symptoms, respectively. After adjusting for confounding variables, high altitude was found to be associated with depressive symptoms (prevalence ratio adjusted (aPR): 1.38, 95% confidence interval: 1.04-1.84; aPR 1.41, 95% CI: 1.20-1.66). CONCLUSIONS A statistically significant association was found between high altitude and depressive symptoms. This may be attributable to hypobaric hypoxia that occurs at high altitudes and its effects on brain function. This study's findings should be considered to identify the population at risk and expand the coverage of preventive and therapeutic measures in high-altitude areas of Peru with poor access to health services.
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Affiliation(s)
- Cynthia Alejandra Zegarra-Rodríguez
- School of Medicine, Universidad Nacional Pedro Ruiz Gallo, Lambayeque, Peru
- Sociedad Científica de Estudiantes de Medicina de la Universidad Nacional Pedro Ruiz Gallo (SOCIEM-UNPRG), Lambayeque, Peru
| | - Nahún Raphael Plasencia-Dueñas
- School of Medicine, Universidad Nacional Pedro Ruiz Gallo, Lambayeque, Peru
- Sociedad Científica de Estudiantes de Medicina de la Universidad Nacional Pedro Ruiz Gallo (SOCIEM-UNPRG), Lambayeque, Peru
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Zare Sakhvidi MJ, Lafontaine A, Lequy E, Berr C, de Hoogh K, Vienneau D, Goldberg M, Zins M, Lemogne C, Jacquemin B. Ambient air pollution exposure and depressive symptoms: Findings from the French CONSTANCES cohort. ENVIRONMENT INTERNATIONAL 2022; 170:107622. [PMID: 36384066 DOI: 10.1016/j.envint.2022.107622] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 11/06/2022] [Accepted: 11/07/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND AND AIM Few studies have reported the association between air pollution exposure with different dimensions of depression. We aimed to explore this association across different dimensions of depressive symptoms in a large population. METHODS Data from the enrollment phase of the French CONSTANCES cohort (2012-2020) were analyzed cross-sectionally. Annual concentrations of particulate matter with a diameter < 2.5 µm (PM2.5), black carbon (BC), and nitrogen dioxide (NO2) from the land-use regression models were assigned to the residential addresses of participants. Total depressive symptoms and its four dimensions (depressed affect, disturbed interpersonal relations, low positive affect, somatic complaints) were measured using Centre of Epidemiologic Studies Depression questionnaire (CES-D). We reported results of negative binomial regression models (reported as Incidence Rate Ratio (IRR) and 95 % confidence interval (CI) for an interquartile range (IQR) increase in exposure), for each pollutant separately. Stratified analyses were performed by sex, income, family status, education, and neighborhood deprivation. RESULTS The study included 123,754 participants (mean age, 46.50 ± 13.61 years; 52.4 % women). The mean concentration of PM2.5, BC and NO2 were 17.14 µg/m3 (IQR = 4.89), 1.82 10-5/m (IQR = 0.88) and 26.58 µg/m3 (IQR = 17.41) respectively. Exposures to PM2.5, BC and NO2 were significantly associated with a higher CES-D total (IRR = 1.022; 95 % CI = 1.002: 1.042, IRR = 1.027; 95 % CI = 1.013: 1.040, and IRR = 1.029; 95 % CI = 1.015: 1.042 respectively), and with depressed affect, and somatic complaints. For all pollutants, a higher estimate was observed for depressed affect. We found stronger adverse associations for men, lower-income participants, low and middle education groups, those living in highly deprived areas, and single participants. CONCLUSION Our finding could assist the exploration of the etiological pathway of air pollution on depression and also considering primary prevention strategies in the areas with air pollution.
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Affiliation(s)
- Mohammad Javad Zare Sakhvidi
- Univ Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail) - UMR_S 1085, F-35000 Rennes, France
| | - Antoine Lafontaine
- Univ Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail) - UMR_S 1085, F-35000 Rennes, France
| | - Emeline Lequy
- Université Paris Cité, Unité "Cohortes en Population" INSERM, Université Paris Saclay, UVSQ, UMS 011 Paris, France
| | - Claudine Berr
- University of Montpellier, INM, Inserm U1198 Neuropeps team, Montpellier, France; Memory Research and Resources Center, Department of Neurology, Montpellier, France
| | - Kees de Hoogh
- Swiss Tropical and Public Health Institute, Allschwil, Switzerland; University of Basel, Basel, Switzerland
| | - Danielle Vienneau
- Swiss Tropical and Public Health Institute, Allschwil, Switzerland; University of Basel, Basel, Switzerland
| | - Marcel Goldberg
- Université Paris Cité, Unité "Cohortes en Population" INSERM, Université Paris Saclay, UVSQ, UMS 011 Paris, France
| | - Marie Zins
- Université Paris Cité, Unité "Cohortes en Population" INSERM, Université Paris Saclay, UVSQ, UMS 011 Paris, France
| | - Cédric Lemogne
- Université Paris Cité, INSERM U1266, Institut de Psychiatrie et Neurosciences de Paris, F-75014 Paris, France; Service de Psychiatrie de l'adulte, AP-HP, Hôpital Hôtel-Dieu, F-75004 Paris, France
| | - Bénédicte Jacquemin
- Univ Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail) - UMR_S 1085, F-35000 Rennes, France.
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Kim E, Park S, Kim S, Choi Y, Cho JH, Kim G. Is altitude a determinant of the health benefits of nature exposure? A systematic review and meta-analysis. Front Public Health 2022; 10:1021618. [PMID: 36504926 PMCID: PMC9732270 DOI: 10.3389/fpubh.2022.1021618] [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: 08/18/2022] [Accepted: 11/11/2022] [Indexed: 11/27/2022] Open
Abstract
Introduction Nature exposure is a widely accepted option for promoting public health owing to the recent surge of scientific evidence. However, the actual settings to facilitate this initiative is yet to be extensively reviewed. In this systematic review, we have aimed to provide an up-to-date summary of interventional studies investigating the psycho-physiological effects of forests and urban forests, including details on their physical settings, and investigate an effect-modifying role of altitude and summarize data on the magnitude and shape of the association. Methods A keyword search using five electronic academic databases (PubMed, Embase, PsycINFO, Web of Science, and Scopus) was conducted to identify relevant articles published in English from the inception year to the end of February 2022. The methodological quality was evaluated using the ROBINS-I or ROB2 tool, depending on the study design. Meta-regression and random effects model were jointly used to examine the relationship between altitude and health outcomes. Results We included 27 eligible studies and 31 cases extracted from 19 studies were used for the meta-analysis. In the meta-regression, we observed a non-linear association between altitude and psycho-physiological effects. Altitude had a positive quadratic association with anxiety (p < 0.000, adjusted R 2 = 96.79%), depression (p < 0.000, adjusted R 2 = 98.78%), and fatigue (p < 0.000, adjusted R 2 = 64.74%) alleviating effects. Conversely, altitude demonstrated a negative non-linear association with the blood pressure-lowering effect (p = 0.009, adjusted R 2 = 32.83%). Additionally, the thermal index (THI) and illuminance (lx) levels were significantly associated with effect sizes of psychological restoration. Discussion This review provides moderate-certainty evidence for an effect-modifying role of altitude. The meta-regression results suggested the optimal and minimal altitude ranges for psychological restoration and physiological relaxation, respectively. Despite some limitations, the study findings provide a significant basis for utilizing altitude, which is easily accessible and simple, to promote the health benefits of nature-based initiatives. Systematic review registration https://www.crd.york.ac.uk/prospero/display_record.php?ID=CRD42022310894, identifier: CRD42022310894.
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Eli B, Zhou Y, Chen Y, Huang X, Liu Z. Symptom Structure of Depression in Older Adults on the Qinghai-Tibet Plateau: A Network Analysis. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:13810. [PMID: 36360690 PMCID: PMC9659106 DOI: 10.3390/ijerph192113810] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 10/18/2022] [Accepted: 10/20/2022] [Indexed: 06/16/2023]
Abstract
Previous studies have confirmed that depression among residents in high-altitude areas is more severe, and that depression may be more persistent and disabling in older adults. This study aims to identify the symptom structure of depression among older adults on the Qinghai-Tibet Plateau (the highest plateau in the world) from a network perspective. This cross-sectional study enrolled 507 older adults (ages 60-80 years old) from the Yushu Prefecture, which is on the Qinghai-Tibet Plateau, China. Depressive symptoms were self-reported using the shortened Center for Epidemiological Studies-Depression Scale (CES-D-10). Then, a Gaussian graphical model (GGM) of depression was developed. Poor sleep, fear, and hopelessness about the future exhibited high centrality in the network. The strongest edge connections emerged between unhappiness and hopelessness about the future, followed by hopelessness about the future and fear; hopelessness about the future and poor sleep; fear and unhappiness; and then poor sleep and unhappiness in the network. The findings of this current study add to the small body of literature on the network structure and complex relationships between depressive symptoms in older adults in high-altitude areas.
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Affiliation(s)
- Buzohre Eli
- CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing 100101, China
- Department of Psychology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yueyue Zhou
- Department of Psychology, Henan University, Kaifeng 475004, China
| | - Yaru Chen
- CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing 100101, China
- Department of Psychology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xin Huang
- CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing 100101, China
- Department of Psychology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhengkui Liu
- CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing 100101, China
- Department of Psychology, University of Chinese Academy of Sciences, Beijing 100049, China
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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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11
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Agrawal S, Singh V, Singh C, Singh A. A review on pathophysiological aspects of Sleep Deprivation. CNS & NEUROLOGICAL DISORDERS DRUG TARGETS 2022; 22:CNSNDDT-EPUB-123413. [PMID: 35549867 DOI: 10.2174/1871527321666220512092718] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 11/08/2021] [Accepted: 01/16/2022] [Indexed: 11/22/2022]
Abstract
Sleep deprivation (SD) (also referred as insomnia) is a condition in which peoples fails to get enough sleep due to excessive yawning, facing difficulty to learn new concepts, forgetfulness as well as depressed mood. This could be occurs due to several possible reasons including medications, stress (caused by shift work). Despite the fact that sleep is important for the normal physiology, it currently affects millions of people around the world US (70 million) and Europe (45 million). Due to increase work demand nowadays lots of peoples experiencing sleep deprivation hence, this could be the reason for several car accident followed by death and morbidity. This review highlighted the impact of SD on neurotransmitter release and functions, theories (Flip-flop theory, oxidative stress theory, neuroinflammation theory, neurotransmitter theory, and hormonal theory) associated with SD pathogenesis apart from this it also demonstrate the molecular pathways underlying SD (PI3K and Akt , NF-κB, Nrf2, and adenosine pathway. However, this study also elaborates the SD induced changes in the level of neurotransmitters, hormonal, and mitochondrial functions. Along with this, it also covers several molecular aspects associated with SD as well. Through this study a link is made between SD and associated causes, which will further help to develop potential therapeutic strategy against SD.
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Affiliation(s)
- Shelly Agrawal
- Affiliated to IK Gujral Punjab Technical University Jalandhar, Punjab, India
| | - Vishesh Singh
- Affiliated to IK Gujral Punjab Technical University Jalandhar, Punjab, India
| | - Charan Singh
- Affiliated to IK Gujral Punjab Technical University Jalandhar, Punjab, India
| | - Arti Singh
- Affiliated to IK Gujral Punjab Technical University Jalandhar, Punjab, India
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12
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A novel nitronyl nitroxide radical HPN-C6 attenuates brain damage in an acute hypobaric hypoxia mouse model through inhibition of the oxidative stress. Neurosci Lett 2022; 782:136650. [DOI: 10.1016/j.neulet.2022.136650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Revised: 04/16/2022] [Accepted: 04/19/2022] [Indexed: 11/22/2022]
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13
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Chauhan G, Kumar G, Roy K, Kumari P, Thondala B, Kishore K, Panjwani U, Ray K. Hypobaric Hypoxia Induces Deficits in Adult Neurogenesis and Social Interaction via Cyclooxygenase-1/ EP1 Receptor Pathway Activating NLRP3 Inflammasome. Mol Neurobiol 2022; 59:2497-2519. [PMID: 35089581 DOI: 10.1007/s12035-022-02750-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Accepted: 01/11/2022] [Indexed: 12/17/2022]
Abstract
Low oxygen environments, like hypobaric hypoxia (HH), are common nodes in a number of diseases characterized by neuroinflammation, which is detrimental to the structural and functional aspects of hippocampal circuitry. Hypoxic conditions lead to elevation of inflammasome-mediated inflammation that may contribute to cognitive deficits. However, a systematic investigation of the impact of inflammasome-mediated neuroinflammation on the components of neurogenic niche during HH remains to be elusive. Cerebral hypoxia was induced in adult male Sprague Dawley rats via decreasing partial pressure of oxygen. The effect of HH (1, 3, and 7 days at 25,000 ft) on social memory, anxiety, adult neurogenesis, and NLRP3- (NLR family pyrin domain containing 3) mediated neuroinflammation in the dentate gyrus (DG) was explored in detail. Furthermore, we explored the therapeutic efficacy of cyclooxygenase-1 inhibitor (valeryl salicylate, 5 mg/kg/day, i.p.) and EP1 receptor (EP1R) antagonist (SC19220, 1 mg/kg/day, i.p.) on HH-induced deficits. Seven days of HH exposure induced alteration in social and anxiety-like behavior along with perturbation in adult neurogenesis. Elevation in NLRP3, caspase-1, and IL-1β levels was observed during HH from day 1. A notable increase in the COX-1/EP1R pathway in activated glial cells in DG was evident during HH. COX-1 inhibitor and EP1R antagonist mitigated the detrimental effects of HH on social memory, adult neurogenesis via blunting NLRP3-mediated inflammation. Our data showed induction of the COX-1/EP1R pathway in the glial cells, which is detrimental to neurogenesis and social memory, opening up the possibility that the COX-1/EP1R pathway is a plausible target for inflammasome-related neurogenesis impairments.
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Affiliation(s)
- Garima Chauhan
- Neurophysiology Division, Defence Institute of Physiology and Allied Sciences, Defence Research and Development Organization, Lucknow Road, Timarpur, Delhi, 110054, India
| | - Gaurav Kumar
- Neurophysiology Division, Defence Institute of Physiology and Allied Sciences, Defence Research and Development Organization, Lucknow Road, Timarpur, Delhi, 110054, India
| | - Koustav Roy
- Neurophysiology Division, Defence Institute of Physiology and Allied Sciences, Defence Research and Development Organization, Lucknow Road, Timarpur, Delhi, 110054, India
| | - Punita Kumari
- Neurophysiology Division, Defence Institute of Physiology and Allied Sciences, Defence Research and Development Organization, Lucknow Road, Timarpur, Delhi, 110054, India
| | - Bhanuteja Thondala
- Neurophysiology Division, Defence Institute of Physiology and Allied Sciences, Defence Research and Development Organization, Lucknow Road, Timarpur, Delhi, 110054, India
| | - Krishna Kishore
- Neurophysiology Division, Defence Institute of Physiology and Allied Sciences, Defence Research and Development Organization, Lucknow Road, Timarpur, Delhi, 110054, India
| | - Usha Panjwani
- Neurophysiology Division, Defence Institute of Physiology and Allied Sciences, Defence Research and Development Organization, Lucknow Road, Timarpur, Delhi, 110054, India
| | - Koushik Ray
- Neurophysiology Division, Defence Institute of Physiology and Allied Sciences, Defence Research and Development Organization, Lucknow Road, Timarpur, Delhi, 110054, India.
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14
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Wan Y, Huang L, Liu Y, Ji W, Li C, Ge RL. Preconditioning With Intermittent Hypobaric Hypoxia Attenuates Stroke Damage and Modulates Endocytosis in Residual Neurons. Front Neurol 2022; 12:750908. [PMID: 34975719 PMCID: PMC8715922 DOI: 10.3389/fneur.2021.750908] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2021] [Accepted: 11/26/2021] [Indexed: 01/01/2023] Open
Abstract
Background: Moderate hypobaric hypoxia induces cerebral ischemic tolerance. We investigated the optimal method for applying hypobaric hypoxia preconditioning at 5,000 m to ischemic brain tissue and combined it with proteomics to determine the mechanisms underlying this effect. Methods: Male SD rats were randomly grouped as S (sham, n = 20), M (middle cerebral artery occlusion [MCAO], n = 28), H2M (intermittent hypobaric hypoxia preconditioned MCAO group, 2 h/day, 10 days, n = 20), H6M (intermittent hypobaric hypoxia preconditioned MCAO group, 6 h/day, 10 days, n = 28), and HpM (persistent hypobaric hypoxia preconditioned MCAO group, 10 days, n = 28). The permanent MCAO model was established based on the Zea Longa method. Infarction was assessed with the modified neurological severity score (mNSS) and 2,3,5-triphenyl tetrazolium chloride staining. The total protein expression of the neuron-specific nuclear protein (NeuN), cysteinyl aspartate specific proteinase 3 (caspase-3), cleaved-caspase-3, and interleukin 6 (IL-6) was determined using western blotting. We assessed the peri-infarct cortex's ultrastructural changes. A label-free proteomic study and western blot verification were performed on the most effective preconditioned group. Results: The H6M group showed a lower infarct volume (p = 0.0005), lower mNSS score (p = 0.0009) than the M group. The H2M showed a lower level of IL-6 (p = 0.0213) than the M group. The caspase-3 level decreased in the H2M (p = 0.0002), H6M (p = 0.0025), and HpM groups (p = 0.0054) compared with that in the M group. Cleaved-caspase-3 expression decreased in the H2M (p = 0.0011), H6M (p < 0.0001), and HpM groups (p < 0.0001) compared with that in the M group. The neurons' ultrastructure and the blood-brain barrier in the peri-infarct tissue improved in the H2M and H6M groups. Immunofluorescence revealed increased NeuN-positive cells in the peri-infarct tissue in the H6M group (p = 0.0003, H6M vs. M). Protein expression of Chmp1a, Arpc5, and Hspa2 factors related to endocytosis were upregulated in the H6M compared with those of the M group (p < 0.05 for all) on western blot verification of label-free proteomics. Conclusions: Intermittent hypobaric hypoxia preconditioning exerts a neuroprotective effect in a rat stroke model. Persistent hypobaric hypoxia stimulation exhibited no significant neuroprotective effect. Intermittent hypoxic preconditioning for 6 h/day for 10 days upregulates key proteins in clathrin-dependent endocytosis of neurons in the cortex.
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Affiliation(s)
- Yaqi Wan
- Key Laboratory of Application and Foundation for High Altitude Medicine Research in Qinghai Province, Research Center for High Altitude Medicine, Qinghai University, Xining, China.,Qinghai Provincial People's Hospital, Xining, China
| | - Lu Huang
- Department of Neurology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Yanmin Liu
- Qinghai Provincial People's Hospital, Xining, China
| | - Weizhong Ji
- Key Laboratory of Application and Foundation for High Altitude Medicine Research in Qinghai Province, Research Center for High Altitude Medicine, Qinghai University, Xining, China.,Qinghai Provincial People's Hospital, Xining, China
| | - Changxing Li
- Department of Basic Medicine, Qinghai University, Xining, China
| | - Ri-Li Ge
- Key Laboratory of Application and Foundation for High Altitude Medicine Research in Qinghai Province, Research Center for High Altitude Medicine, Qinghai University, Xining, China
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15
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Nguyen KT, Gates CA, Hassell JE, Foxx CL, Salazar SN, Luthens AK, Arnold AL, Elam BL, Elsayed AI, Leblanc M, Adams SC, Lowry CA, Reuter JD. Evaluation of the effects of altitude on biological signatures of inflammation and anxiety- and depressive-like behavioral responses. Prog Neuropsychopharmacol Biol Psychiatry 2021; 111:110331. [PMID: 33891978 DOI: 10.1016/j.pnpbp.2021.110331] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 04/15/2021] [Accepted: 04/15/2021] [Indexed: 12/11/2022]
Abstract
Over sixteen million people suffer from a depressive episode annually in the United States, with females affected at twice the rate of males. Little is known about the effects of exposure to high altitude on the risk of development of major depressive disorder, despite reports of higher suicide rates at higher altitudes. We hypothesize that exposure to hypobaric hypoxia at high altitude increases endophenotypes of self-directed suicidal violence, including biological signatures of chronic inflammation and vulnerability to anxiety-like and depressive-like behavioral responses in a sex-specific manner. Biological signatures of inflammation, including granulocyte:lymphocyte ratios, monocyte cell counts, and monocyte:lymphocyte ratios were assessed using complete blood count data, anhedonia, and anxiety- and depressive-like behavioral responses were evaluated. We assessed biological signatures of inflammation and behavioral responses in the open-field test, sucrose preference test, and modified Porsolt forced swim test in young adult male and female Long-Evans and Sprague Dawley rats. All tests were conducted near sea level (374 ft [114 m] elevation) and at moderate-high altitude (5430 ft [1655 m] elevation) during acclimation periods of one, two, three, four, and five weeks following shipment from a sea level animal breeding facility (N = 320, n = 8 per group). Exposure to moderate-high altitude induced a biological signature of increased inflammation, as evidenced by main effects of altitude for: 1) increased granulocyte:lymphocyte ratio; 2) increased count and relative abundance of circulating monocytes; and 3) increased monocyte:lymphocyte ratios. Exposure to moderate-high altitude also increased anhedonia as assessed in the sucrose preference test in both male and female rats, when data were collapsed across strain and time. Among male and female Long Evans rats, exposure to moderate-high altitude increased immobility in the forced swim test, without changing anxiety-like behaviors in the open-field test. Finally, granulocyte:lymphocyte ratios were correlated with anhedonia in the sucrose preference test. These data are consistent with the hypothesis that hypobaric hypoxia at moderate-high altitude induces persistent endophenotypes of self-directed suicidal violence including biological signatures of inflammation, anhedonia, and depressive-like behavioral responses.
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Affiliation(s)
- Kadi T Nguyen
- Department of Integrative Physiology, University of Colorado Boulder, Boulder, CO 80309, USA.
| | - Chloé A Gates
- Department of Integrative Physiology, University of Colorado Boulder, Boulder, CO 80309, USA.
| | - James E Hassell
- Department of Integrative Physiology, University of Colorado Boulder, Boulder, CO 80309, USA; Center for Neuroscience, University of Colorado Boulder, Boulder, CO 80309, USA.
| | - Christine L Foxx
- Department of Integrative Physiology, University of Colorado Boulder, Boulder, CO 80309, USA; Center for Microbial Exploration, University of Colorado Boulder, Boulder, CO 80309, USA.
| | - Stephanie N Salazar
- Department of Integrative Physiology, University of Colorado Boulder, Boulder, CO 80309, USA.
| | - Amalia K Luthens
- Department of Integrative Physiology, University of Colorado Boulder, Boulder, CO 80309, USA.
| | - Andrea L Arnold
- Department of Integrative Physiology, University of Colorado Boulder, Boulder, CO 80309, USA.
| | - Brooke L Elam
- Department of Integrative Physiology, University of Colorado Boulder, Boulder, CO 80309, USA.
| | - Ahmed I Elsayed
- Department of Integrative Physiology, University of Colorado Boulder, Boulder, CO 80309, USA; Center for Microbial Exploration, University of Colorado Boulder, Boulder, CO 80309, USA.
| | - Mathias Leblanc
- Animal Resources Department, Gene Expression Laboratory, The Salk Institute for Biological Studies, La Jolla, CA 92037, USA.
| | - Sean C Adams
- Animal Resources Department, Gene Expression Laboratory, The Salk Institute for Biological Studies, La Jolla, CA 92037, USA.
| | - Christopher A Lowry
- Department of Integrative Physiology, University of Colorado Boulder, Boulder, CO 80309, USA; Center for Neuroscience, University of Colorado Boulder, Boulder, CO 80309, USA; Center for Microbial Exploration, University of Colorado Boulder, Boulder, CO 80309, USA; Department of Physical Medicine & Rehabilitation and Center for Neuroscience, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA; Veterans Health Administration, Rocky Mountain Mental Illness Research Education and Clinical Center (MIRECC), Rocky Mountain Regional Veterans Affairs Medical Center (RMRVAMC), Aurora, CO 80045, USA; Military and Veteran Microbiome: Consortium for Research and Education (MVM-CoRE), Aurora, CO 80045, USA.
| | - Jon D Reuter
- Center for Neuroscience, University of Colorado Boulder, Boulder, CO 80309, USA; Department of Psychology and Neuroscience, University of Colorado Boulder, Boulder, CO 80309, USA; Office of Animal Resources, University of Colorado Boulder, Boulder, CO 80309, USA.
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16
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Sex-based changes in rat brain serotonin and behavior in a model of altitude-related vulnerability to treatment-resistant depression. Psychopharmacology (Berl) 2021; 238:2867-2881. [PMID: 34159421 DOI: 10.1007/s00213-021-05902-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Accepted: 06/08/2021] [Indexed: 01/03/2023]
Abstract
RATIONALE Rates of depression and suicide increase with altitude. In our animal model, rats housed at moderate altitude vs. at sea level exhibit increased depressive symptoms in the forced swim test (FST) and lack of response to selective serotonin reuptake inhibitors (SSRIs). Depression and SSRI resistance are linked to disrupted serotonergic function, and hypobaric hypoxia may reduce the oxygen-dependent synthesis of serotonin. We therefore tested brain serotonin in rats housed at altitude. METHODS Sprague-Dawley rats were housed at altitude (4,500 ft, 10,000 ft) vs. sea level for 7-36 days. Brain serotonin was measured by ELISA, or behavior evaluated in the FST, sucrose preference (SPT), or open-field tests (OFT). RESULTS After 2 weeks at 4,500 ft or 10,000ft vs. sea level, serotonin levels decreased significantly at altitude in the female prefrontal cortex, striatum, hippocampus, and brainstem, but increased with altitude in the male hippocampus and brainstem. Female brain serotonin decreased from 7 to 36 days at 4,500 ft, but males did not vary. At 2 weeks and 24 days, females at altitude exhibit lower brain serotonin and increased depressive symptoms in the FST and SPT, with motor behavior unaltered. In males, serotonin, passive coping in the FST and OFT immobility increased with altitude at 2 weeks, but not at 24 days. Male SPT behavior did not change with altitude. CONCLUSIONS Females may be more vulnerable to depressive symptoms at altitude, while males may be resilient. Chronic hypoxic stress at altitudes as low as 4,500 ft may cause a brain serotonin imbalance to worsen vulnerability to depression and SSRI resistance, and potentially worsen suicide risk.
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17
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Sharma HS, Lafuente JV, Feng L, Muresanu DF, Menon PK, Castellani RJ, Nozari A, Sahib S, Tian ZR, Buzoianu AD, Sjöquist PO, Patnaik R, Wiklund L, Sharma A. Methamphetamine exacerbates pathophysiology of traumatic brain injury at high altitude. Neuroprotective effects of nanodelivery of a potent antioxidant compound H-290/51. PROGRESS IN BRAIN RESEARCH 2021; 266:123-193. [PMID: 34689858 DOI: 10.1016/bs.pbr.2021.06.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Military personnel are often exposed to high altitude (HA, ca. 4500-5000m) for combat operations associated with neurological dysfunctions. HA is a severe stressful situation and people frequently use methamphetamine (METH) or other psychostimulants to cope stress. Since military personnel are prone to different kinds of traumatic brain injury (TBI), in this review we discuss possible effects of METH on concussive head injury (CHI) at HA based on our own observations. METH exposure at HA exacerbates pathophysiology of CHI as compared to normobaric laboratory environment comparable to sea level. Increased blood-brain barrier (BBB) breakdown, edema formation and reductions in the cerebral blood flow (CBF) following CHI were exacerbated by METH intoxication at HA. Damage to cerebral microvasculature and expression of beta catenin was also exacerbated following CHI in METH treated group at HA. TiO2-nanowired delivery of H-290/51 (150mg/kg, i.p.), a potent chain-breaking antioxidant significantly enhanced CBF and reduced BBB breakdown, edema formation, beta catenin expression and brain pathology in METH exposed rats after CHI at HA. These observations are the first to point out that METH exposure in CHI exacerbated brain pathology at HA and this appears to be related with greater production of oxidative stress induced brain pathology, not reported earlier.
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Affiliation(s)
- Hari Shanker Sharma
- International Experimental Central Nervous System Injury & Repair (IECNSIR), Department of Surgical Sciences, Anesthesiology & Intensive Care Medicine, Uppsala University Hospital, Uppsala University, Uppsala, Sweden.
| | - José Vicente Lafuente
- LaNCE, Department of Neuroscience, University of the Basque Country (UPV/EHU), Leioa, Bizkaia, Spain
| | - Lianyuan Feng
- Department of Neurology, Bethune International Peace Hospital, Shijiazhuang, Hebei Province, China
| | - Dafin F Muresanu
- Department of Clinical Neurosciences, University of Medicine & Pharmacy, Cluj-Napoca, Romania; "RoNeuro" Institute for Neurological Research and Diagnostic, Cluj-Napoca, Romania
| | - Preeti K Menon
- Department of Biochemistry and Biophysics, Stockholm University, Stockholm, Sweden
| | - Rudy J Castellani
- Department of Pathology, University of Maryland, Baltimore, MD, United States
| | - Ala Nozari
- Anesthesiology & Intensive Care, Massachusetts General Hospital, Boston, MA, United States
| | - Seaab Sahib
- Department of Chemistry & Biochemistry, University of Arkansas, Fayetteville, AR, United States
| | - Z Ryan Tian
- Department of Chemistry & Biochemistry, University of Arkansas, Fayetteville, AR, United States
| | - Anca D Buzoianu
- Department of Clinical Pharmacology and Toxicology, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Per-Ove Sjöquist
- Division of Cardiology, Department of Medicine, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - Ranjana Patnaik
- Department of Biomaterials, School of Biomedical Engineering, Indian Institute of Technology, Banaras Hindu University, Varanasi, India
| | - Lars Wiklund
- International Experimental Central Nervous System Injury & Repair (IECNSIR), Department of Surgical Sciences, Anesthesiology & Intensive Care Medicine, Uppsala University Hospital, Uppsala University, Uppsala, Sweden
| | - Aruna Sharma
- International Experimental Central Nervous System Injury & Repair (IECNSIR), Department of Surgical Sciences, Anesthesiology & Intensive Care Medicine, Uppsala University Hospital, Uppsala University, Uppsala, Sweden.
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18
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Eli B, Zhou Y, Liang Y, Cheng J, Wang J, Huang C, Xuan X, Liu Z. Depression in Children and Adolescents on the Qinghai-Tibet Plateau: Associations with Resilience and Prosocial Behavior. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18020440. [PMID: 33429870 PMCID: PMC7826979 DOI: 10.3390/ijerph18020440] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Revised: 01/05/2021] [Accepted: 01/06/2021] [Indexed: 12/28/2022]
Abstract
Depression in children and adolescents has become a serious public health problem worldwide. The objectives of this study were twofold: first, to investigate the status of depression among children and adolescents on the Qinghai-Tibet Plateau, the highest plateau in the world, with an average altitude of more than 4200 m (13,776 feet), and second, to examine the associations among prosocial behavior, resilience, and depression. A cross-sectional study was conducted among children and adolescents from Yushu Prefecture on the Qinghai-Tibet Plateau. A total of 11,160 participants aged 10–17 years (Mage = 14.34 years, SD = 1.77; 51.4% girls) were included. Self-reported depression, resilience, and prosocial behavior were assessed. The prevalence of depression was 29.2% in the current study. Higher levels of prosocial behavior were significantly associated with lower levels of depression (β = −0.25, p < 0.001). Furthermore, resilience significantly moderated the relationship between prosocial behavior and depression (β = −0.08, p < 0.001); that is, resilience enhanced the protective role of prosocial behavior in depression. These findings indicate that resilience may play an important role in the associations between prosocial behavior and depression, which suggests that improving resilience is essential for the prevention and intervention of depression among children and adolescents on the Qinghai-Tibet Plateau.
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Affiliation(s)
- Buzohre Eli
- CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing 100101, China; (B.E.); (Y.Z.); (Y.L.); (J.W.)
- Department of Psychology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yueyue Zhou
- CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing 100101, China; (B.E.); (Y.Z.); (Y.L.); (J.W.)
- Department of Psychology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yiming Liang
- CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing 100101, China; (B.E.); (Y.Z.); (Y.L.); (J.W.)
- Department of Psychology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jin Cheng
- School of Psychology, Beijing Sport University, Beijing 100084, China;
| | - Jiazhou Wang
- CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing 100101, China; (B.E.); (Y.Z.); (Y.L.); (J.W.)
- Department of Psychology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Changbing Huang
- CAS Key Laboratory of Behavioral Science, Institute of Psychology, Chinese Academy of Sciences, Beijing 100101, China;
| | - Xi Xuan
- Department of Law and Politics, Nankai University Binhai College, Tianjin 300270, China;
| | - Zhengkui Liu
- CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing 100101, China; (B.E.); (Y.Z.); (Y.L.); (J.W.)
- Department of Psychology, University of Chinese Academy of Sciences, Beijing 100049, China
- Correspondence: ; Tel.: +86-10-64871358; Fax: +86-10-64872070
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19
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Tsai SS, Chiu YW, Weng YH, Yang CY. Association between ozone air pollution levels and hospitalizations for depression in Taipei: a time-stratified case-crossover study. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2020; 83:596-603. [PMID: 32757744 DOI: 10.1080/15287394.2020.1801544] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Epidemiologic studies reported an association between exposure to ambient air pollutants and increased mortality rate attributed to suicide and suicide attempts. The investigation sought to determine whether there is an association between short-term ambient ozone (O3) level exposure and daily hospital admissions for depression in Taipei from 2009 to 2013 using a time-stratified case-crossover design. In our single-pollutant model (with no adjustment for other pollutants), the % increase in daily hospital admissions for depression was 12% on warm days and 30% on cool days, per interquartile range (IQR) rise in O3 levels, respectively. Ozone levels were significantly correlated with daily number of depression admissions both on warm and cool days. In our two-pollutant models, O3 levels remained significant after adjusting for other air pollutants, including particulate matter (PM10, PM2.5), sulfur dioxide (SO2), nitrogen dioxide (NO2), and carbon monoxide (CO) both on warm and cool days. Although O3 levels tended to be higher on warm days, admissions for depression were higher on cool days, suggesting that the relationship between O3 concentrations and depression may be affected by temperature. Further study is needed to better understand these findings.
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Affiliation(s)
- Shang-Shyue Tsai
- Department of Healthcare Administration, I-Shou University , Kaohsiung, Taiwan
| | - Ya-Wen Chiu
- Global Health and Development, College of Public Health, Taipei Medical University , Taipei, Taiwan
| | - Yi-Hao Weng
- Division of Neonatology, Department of Pediatrics, Chang Gung Memorial Hospital, Chang Gung University College of Medicine , Taipei, Taiwan
| | - Chun-Yuh Yang
- Department of Public Health, College of Health Sciences, Kaohsiung Medical University , Kaohsiung, Taiwan
- National Institute of Environmental Health Sciences, National Health Research Institute , Miaoli, Taiwan
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Fear memory is impaired in hypobaric hypoxia: Role of synaptic plasticity and neuro-modulators in limbic region. Life Sci 2020; 254:117555. [DOI: 10.1016/j.lfs.2020.117555] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 03/05/2020] [Accepted: 03/13/2020] [Indexed: 12/19/2022]
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21
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Kumari P, Wadhwa M, Chauhan G, Alam S, Roy K, Kumar Jha P, Kishore K, Ray K, Kumar S, Nag TC, Panjwani U. Hypobaric hypoxia induced fear and extinction memory impairment and effect of Ginkgo biloba in its amelioration: Behavioral, neurochemical and molecular correlates. Behav Brain Res 2020; 387:112595. [PMID: 32194184 DOI: 10.1016/j.bbr.2020.112595] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 02/12/2020] [Accepted: 03/06/2020] [Indexed: 12/21/2022]
Abstract
Regulated fear and extinction memory is essential for balanced behavioral response. Limbic brain regions are susceptible to hypobaric hypoxia (HH) and are putative target for fear extinction deficit and dysregulation. The present study aimed to examine the effect of HH and Ginkgo biloba extract (GBE) on fear and extinction memory with the underlying mechanism. Adult male Sprague-Dawley rats were evaluated for fear extinction and anxious behavior following GBE administration during HH exposure. Blood and tissue (PFC, hippocampus and amygdala) samples were collected for biochemical, morphological and molecular studies. Results revealed deficit in contextual and cued fear extinction following 3 days of HH exposure. Increased corticosterone, glutamate with decreased GABA level was found with marked pyknosis, decrease in apical dendritic length and number of functional spines. Decline in mRNA expression level of synaptic plasticity genes and immunoreactivity of BDNF, synaptophysin, PSD95, spinophilin was observed following HH exposure. GBE administration during HH exposure improved fear and extinction memory along with decline in anxious behavior. It restored corticosterone, glutamate and GABA levels with an increase in apical dendritic length and number of functional spines with a reduction in pyknosis. It also improved mRNA expression level and immunoreactivity of neurotrophic and synaptic proteins. The present study is the first which demonstrates fear extinction deficit and anxious behavior following HH exposure. GBE administration ameliorated fear and extinction memory dysregulation by restoration of neurotransmitter levels, neuronal pyknosis and synaptic connections along with improved neurotrophic and synaptic protein expressions.
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Affiliation(s)
- Punita Kumari
- Defence Institute of Physiology & Allied Sciences (DIPAS), Defence Research and Development Organization (DRDO), Lucknow Road, Timarpur, Delhi, 110054, India.
| | - Meetu Wadhwa
- Defence Institute of Physiology & Allied Sciences (DIPAS), Defence Research and Development Organization (DRDO), Lucknow Road, Timarpur, Delhi, 110054, India.
| | - Garima Chauhan
- Defence Institute of Physiology & Allied Sciences (DIPAS), Defence Research and Development Organization (DRDO), Lucknow Road, Timarpur, Delhi, 110054, India.
| | - Shahnawaz Alam
- Defence Institute of Physiology & Allied Sciences (DIPAS), Defence Research and Development Organization (DRDO), Lucknow Road, Timarpur, Delhi, 110054, India.
| | - Koustav Roy
- Defence Institute of Physiology & Allied Sciences (DIPAS), Defence Research and Development Organization (DRDO), Lucknow Road, Timarpur, Delhi, 110054, India.
| | - Prabhash Kumar Jha
- Defence Institute of Physiology & Allied Sciences (DIPAS), Defence Research and Development Organization (DRDO), Lucknow Road, Timarpur, Delhi, 110054, India.
| | - Krishna Kishore
- Defence Institute of Physiology & Allied Sciences (DIPAS), Defence Research and Development Organization (DRDO), Lucknow Road, Timarpur, Delhi, 110054, India.
| | - Koushik Ray
- Defence Institute of Physiology & Allied Sciences (DIPAS), Defence Research and Development Organization (DRDO), Lucknow Road, Timarpur, Delhi, 110054, India.
| | - Sanjeev Kumar
- Defence Institute of Physiology & Allied Sciences (DIPAS), Defence Research and Development Organization (DRDO), Lucknow Road, Timarpur, Delhi, 110054, India.
| | - Tapas Chandra Nag
- Department of Anatomy, All India Institute of Medical Sciences (AIIMS), New Delhi, India.
| | - Usha Panjwani
- Defence Institute of Physiology & Allied Sciences (DIPAS), Defence Research and Development Organization (DRDO), Lucknow Road, Timarpur, Delhi, 110054, India.
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22
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Hwang J, DeLisi LE, Öngür D, Riley C, Zuo C, Shi X, Sung YH, Kondo D, Kim TS, Villafuerte R, Smedberg D, Yurgelun-Todd D, Renshaw PF. Cerebral bioenergetic differences measured by phosphorus-31 magnetic resonance spectroscopy between bipolar disorder and healthy subjects living in two different regions suggesting possible effects of altitude. Psychiatry Clin Neurosci 2019; 73:581-589. [PMID: 31125152 PMCID: PMC6771782 DOI: 10.1111/pcn.12893] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 05/17/2019] [Accepted: 05/22/2019] [Indexed: 12/26/2022]
Abstract
AIM Increased oxidative stress in cerebral mitochondria may follow exposure to the systemic hypobaric hypoxia associated with residing at higher altitudes. Because mitochondrial dysfunction is implicated in bipolar disorder (BD) pathophysiology, this may impact the cerebral bioenergetics in BD. In this study, we evaluated the cerebral bioenergetics of BD and healthy control (HC) subjects at two sites, located at sea level and at moderate altitude. METHODS Forty-three veterans with BD and 33 HC veterans were recruited in Boston (n = 22) and Salt Lake City (SLC; n = 54). Levels of phosphocreatine, β nucleoside triphosphate (βNTP), inorganic phosphate, and pH over total phosphate (TP) were measured using phosphorus-31 magnetic resonance spectroscopy in the following brain regions: anterior cingulate cortex and posterior occipital cortex, as well as bilateral prefrontal and occipitoparietal (OP) white matter (WM). RESULTS A significant main effect of site was found in βNTP/TP (Boston > SLC) and phosphocreatine/TP (Boston < SLC) in most cortical and WM regions, and inorganic phosphate/TP (Boston < SLC) in OP regions. A main effect analysis of BD diagnosis demonstrated a lower pH in posterior occipital cortex and right OP WM and a lower βNTP/TP in right prefrontal WM in BD subjects, compared to HC subjects. CONCLUSION The study showed that there were cerebral bioenergetic differences in both BD and HC veteran participants at two different sites, which may be partly explained by altitude difference. Future studies are needed to replicate these results in order to elucidate the dysfunctional mitochondrial changes that occur in response to hypobaric hypoxia.
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Affiliation(s)
- Jaeuk Hwang
- Department of Psychiatry, University of Utah, Salt Lake City, USA.,Department of Psychiatry, Soonchunhyang University Hospital, Seoul, South Korea
| | - Lynn E DeLisi
- US Department of Veterans Affairs Boston Healthcare System, Brockton, USA
| | - Dost Öngür
- Brain Imaging Center, McLean Hospital, Department of Psychiatry, Harvard Medical School, Belmont, USA
| | - Colin Riley
- Department of Psychiatry, University of Utah, Salt Lake City, USA
| | - Chun Zuo
- Brain Imaging Center, McLean Hospital, Department of Psychiatry, Harvard Medical School, Belmont, USA
| | - Xianfeng Shi
- Department of Psychiatry, University of Utah, Salt Lake City, USA
| | - Young-Hoon Sung
- Department of Psychiatry, University of Utah, Salt Lake City, USA
| | - Douglas Kondo
- Department of Psychiatry, University of Utah, Salt Lake City, USA.,Rocky Mountain Mental Illness Research, Education and Clinical Center, US Department of Veterans Affairs Healthcare System, Salt Lake City, USA
| | - Tae-Suk Kim
- Department of Psychiatry, Seoul St. Mary's Hospital, The Catholic University of Korea College of Medicine, Seoul, South Korea
| | - Rosemond Villafuerte
- Brain Imaging Center, McLean Hospital, Department of Psychiatry, Harvard Medical School, Belmont, USA
| | - Diane Smedberg
- US Department of Veterans Affairs Boston Healthcare System, Brockton, USA
| | - Deborah Yurgelun-Todd
- Department of Psychiatry, University of Utah, Salt Lake City, USA.,Rocky Mountain Mental Illness Research, Education and Clinical Center, US Department of Veterans Affairs Healthcare System, Salt Lake City, USA
| | - Perry F Renshaw
- Department of Psychiatry, University of Utah, Salt Lake City, USA.,Rocky Mountain Mental Illness Research, Education and Clinical Center, US Department of Veterans Affairs Healthcare System, Salt Lake City, USA
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Yang CY, Huang YT, Chiu HF. Does ambient ozone air pollution trigger suicide attempts? A case cross-over analysis in Taipei. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2019; 82:638-644. [PMID: 31298077 DOI: 10.1080/15287394.2019.1640980] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Epidemiologic studies indicated that exposure to ambient air pollutants was associated with increased mortality rates attributed to suicide. The objective of this study was to investigate the potential relationship between ambient ozone (O3) levels and daily number of hospital admissions for suicide attempts in Taipei for the period 2008-2012 using a time-stratified case-crossover analysis. In the single-pollutant model (without adjustment for other pollutants), the risk of committing a suicide attempt increased by 9% on warm days and 27% on cool days for each interquartile range (IQR) rise in O3 levels, respectively. The concentration of O3 was thus significantly associated with daily number of suicide attempts both on warm and cool days. In the two-pollutant models, O3 levels remained significant after the inclusion of other air pollutants (particulate matter (PM10), PM2.5, sulfur dioxide (SO2), nitrogen dioxide (NO2), and carbon monoxide (CO)) on cool days. However, on warm days, no significant correlation was found between O3 levels and reported daily number of suicide attempts. The relationship between O3 and suicide attempts appeared to be dependent upon temperature; however, the basis for these observations requires further investigation.
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Affiliation(s)
- Chun-Yuh Yang
- a Department of Public Health, College of Health Sciences, Kaohsiung Medical University , Kaohsiung , Taiwan
| | - Yu-Tung Huang
- b National Institute of Environmental Health Sciences, National Health Research Institute , Miaoli , Taiwan
| | - Hui-Fen Chiu
- c Center for Big Data Analytics and Statistics, Chang Gung Memorial Hospital , Linkou , Taoyuan , Taiwan
- d Department of Pharmacology, College of Medicine, Kaohsiung Medical University , Kaohsiung , Taiwan
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24
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Alam S, Ray K, Jain V, Wadhwa M, Kumari P, Roy K, Chauhan G, Kishore K, Panjwani U, Singh SB. Reduced expression of Kalirin-7 contributes to working memory deficit during chronic hypobaric hypoxia exposure. Behav Brain Res 2019; 366:135-141. [PMID: 30851319 DOI: 10.1016/j.bbr.2019.03.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Revised: 03/05/2019] [Accepted: 03/06/2019] [Indexed: 11/28/2022]
Abstract
Hypobaric hypoxia (HH) is an environmental stress encountered at high altitude. It has been shown that HH resulted in spine atrophy and working memory deficits. Kalirin-7, a postsynaptic density protein, plays an important and key role in regulating spine dynamics and its plasticity. Spine atrophy is implicated in HH induced memory deficits but role of Kalirin-7 in this phenomenon is not studied. Present study is therefore designed to investigate the effect of chronic HH exposure on Kalirin-7 expression in hippocampus and its role in spatial working memory deficits. Adult rats (n = 12, 3 months old) were exposed to a simulated altitude of 25,000 feet for 7 days. Following HH exposure, spatial working memory was assessed with Radial arm maze and T maze. Hippocampal expression of Kalrin-7 was estimated at mRNA and protein levels. Results of behavioural experiments showed that HH causes significant decrease in the spatial working memory. There was a significant reduction in the protein expression of Kalirin-7 in the hippocampus of hypoxia exposed rats (43.89 ± 7.43) as compared to the control (69.54 ± 10.99). The mRNA expression of Kalrin-7 also exhibits significant reduction (0.59 ± 0.05) in the exposed group as compared to the control (0.98 ± 0.07). Immunohistochemistry showed that Kalirin-7 is decreased significantly in CA1, CA3 and DG regions of the hippocampus. Moreover, memory deficits are significantly correlated with decreased immunoreactivity of the hippocampal Kalirin-7. In conclusion, it can be said therefore, that change in Kalirin-7 expression in the hippocampus is associated with HH induced working memory deficit.
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Affiliation(s)
- Shahnawaz Alam
- Defence Institute of Physiology and Allied Sciences (DIPAS), Defence Research and Development Organisation (DRDO), Luckhnow Road, Timarpur, Delhi, 110054, India
| | - Koushik Ray
- Defence Institute of Physiology and Allied Sciences (DIPAS), Defence Research and Development Organisation (DRDO), Luckhnow Road, Timarpur, Delhi, 110054, India
| | - Vishal Jain
- Defence Institute of Physiology and Allied Sciences (DIPAS), Defence Research and Development Organisation (DRDO), Luckhnow Road, Timarpur, Delhi, 110054, India
| | - Meetu Wadhwa
- Defence Institute of Physiology and Allied Sciences (DIPAS), Defence Research and Development Organisation (DRDO), Luckhnow Road, Timarpur, Delhi, 110054, India
| | - Punita Kumari
- Defence Institute of Physiology and Allied Sciences (DIPAS), Defence Research and Development Organisation (DRDO), Luckhnow Road, Timarpur, Delhi, 110054, India
| | - Koustav Roy
- Defence Institute of Physiology and Allied Sciences (DIPAS), Defence Research and Development Organisation (DRDO), Luckhnow Road, Timarpur, Delhi, 110054, India
| | - Garima Chauhan
- Defence Institute of Physiology and Allied Sciences (DIPAS), Defence Research and Development Organisation (DRDO), Luckhnow Road, Timarpur, Delhi, 110054, India
| | - Krishna Kishore
- Defence Institute of Physiology and Allied Sciences (DIPAS), Defence Research and Development Organisation (DRDO), Luckhnow Road, Timarpur, Delhi, 110054, India
| | - Usha Panjwani
- Defence Institute of Physiology and Allied Sciences (DIPAS), Defence Research and Development Organisation (DRDO), Luckhnow Road, Timarpur, Delhi, 110054, India
| | - Shashi Bala Singh
- National Institute of Pharmaceutical Education and Research (NIPER), Balanager, Hyderabad, 500037, Telangana, India.
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25
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Ray K, Kishore K, Vats P, Bhattacharyya D, Akunov A, Maripov A, Sarybaev A, Singh SB, Kumar B. A Temporal Study on Learning and Memory at High Altitude in Two Ethnic Groups. High Alt Med Biol 2019; 20:236-244. [PMID: 31210541 DOI: 10.1089/ham.2018.0139] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Introduction: Cognitive function has been compromised during high-altitude (HA) exposure due to slowing of mental processing. Materials and Methods: A total of 20 Indian and 20 Kyrgyz soldiers were studied at 4111 m to assess cognitive function in two different ethnic groups. Paired associate learning, pattern recognition memory, spatial span (SSP), spatial working memory (SWM), choice reaction time (CRT), and simple reaction time (SRT) were evaluated at sea level and on days 3, 7, 14, and 21 of HA stay and on day 3 of deinduction. Results: All the parameters were significantly affected at HA. Indian soldiers were acclimatized by 7 days but Kyrgyz soldiers required 21 days for acclimatization. A slow impairment in SWM, CRT, and SRT was observed in Kyrgyz soldiers than in Indian soldiers and it continues throughout 21 days of HA stay, but for Indian soldiers the deterioration was maximum on day 7 and improvement in SWM, CRT, and SRT was observed on day 14 and close to baseline value on day 21. After deinduction, although Indian soldiers attained the normal value, Kyrgyz soldiers had higher value than baseline in SSP, SWM, CRT, and SRT. Conclusion: Difference in the cognitive performances of Indian and Kyrgyz soldiers may be due to the ethnogenetic diversity of these two groups.
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Affiliation(s)
- Koushik Ray
- Defence Institute of Physiology and Allied Sciences, Defence Research and Development Organization, Delhi, India
| | - Krishna Kishore
- Defence Institute of Physiology and Allied Sciences, Defence Research and Development Organization, Delhi, India
| | - Praveen Vats
- Defence Institute of Physiology and Allied Sciences, Defence Research and Development Organization, Delhi, India
| | - Debojyoti Bhattacharyya
- Defence Institute of Physiology and Allied Sciences, Defence Research and Development Organization, Delhi, India
| | - Almaz Akunov
- Kyrgyz-Indian Mountain Biomedical Research Centre, Bishkek, Kyrgyzstan
| | | | - Akpay Sarybaev
- Kyrgyz-Indian Mountain Biomedical Research Centre, Bishkek, Kyrgyzstan
| | - Shashi Bala Singh
- Defence Institute of Physiology and Allied Sciences, Defence Research and Development Organization, Delhi, India
| | - Bhuvnesh Kumar
- Defence Institute of Physiology and Allied Sciences, Defence Research and Development Organization, Delhi, India
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Ombach HJ, Scholl LS, Bakian AV, Renshaw KT, Sung YH, Renshaw PF, Kanekar S. Association between altitude, prescription opioid misuse, and fatal overdoses. Addict Behav Rep 2019; 9:100167. [PMID: 31193784 PMCID: PMC6542744 DOI: 10.1016/j.abrep.2019.100167] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Revised: 01/10/2019] [Accepted: 02/01/2019] [Indexed: 12/30/2022] Open
Abstract
OBJECTIVE Prescription opioid misuse and fatal overdoses have increased significantly over the last two decades. Living at altitude has been linked to greater reward benefits of other drugs of abuse, and living at altitude may also exacerbate the respiratory depression linked to opioid use. Therefore, we examined the relationships between living at altitude, and prescription opioid misuse and fatal overdoses. METHOD State-level past year rates of prescription opioid misuse were retrieved from the Substance Abuse and Mental Health Services Administration. County-level overdose data were extracted from the Centers for Disease Control and Prevention. Multiple linear regression models were fit to determine the relationship between average state elevation and state rates of opioid misuse. Logistic regression models were fit to determine the relationship between county elevation and county-level fatal opioid overdose prevalence. RESULTS After controlling for state opioid prescribing rates and other confounders, we identified a significant positive association between mean state altitude and state-level opioid misuse rates for women, but not men. We also found a significant positive association between county-level altitude and prevalence of fatal opioid overdose. CONCLUSIONS Living at altitude is thus demographically associated with increasing rates of misuse of prescription opioids, as well as of cocaine and methamphetamine. Animal studies suggest that the hypobaric hypoxia exposure involved with living at altitude may disrupt brain neurochemistry, to increase reward benefits of drugs of abuse. This increased misuse of both stimulants and opioids may increase likelihood of overdose at altitude, with overdoses by opioid use also potentially facilitated by altitude-related hypoxia.
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Affiliation(s)
- Hendrik J. Ombach
- Department of Psychiatry, University of Utah School of Medicine, 383 Colorow Drive, Salt Lake City, UT, 84108, United States
| | - Lindsay S. Scholl
- Department of Psychiatry, University of Utah School of Medicine, 383 Colorow Drive, Salt Lake City, UT, 84108, United States
| | - Amanda V. Bakian
- Department of Psychiatry, University of Utah School of Medicine, 383 Colorow Drive, Salt Lake City, UT, 84108, United States
| | - Kai T. Renshaw
- Department of Psychiatry, University of Utah School of Medicine, 383 Colorow Drive, Salt Lake City, UT, 84108, United States
| | - Young-Hoon Sung
- Department of Psychiatry, University of Utah School of Medicine, 383 Colorow Drive, Salt Lake City, UT, 84108, United States
| | - Perry F. Renshaw
- Department of Psychiatry, University of Utah School of Medicine, 383 Colorow Drive, Salt Lake City, UT, 84108, United States
- Utah Science Technology and Research (USTAR) Initiative, Salt Lake City, UT, 84108, United States
- Rocky Mountain VISN19 Mental Illness Research, Education, and Clinical Centers (MIRECC), 500 Foothill Drive, Salt Lake City, UT, 84148, United States
- Salt Lake City Veterans Affairs Health Care System, 500 Foothill Drive, Salt Lake City, UT, 84148, United States
| | - Shami Kanekar
- Department of Psychiatry, University of Utah School of Medicine, 383 Colorow Drive, Salt Lake City, UT, 84108, United States
- Rocky Mountain VISN19 Mental Illness Research, Education, and Clinical Centers (MIRECC), 500 Foothill Drive, Salt Lake City, UT, 84148, United States
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27
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Sabic H, Kious B, Boxer D, Fitzgerald C, Riley C, Scholl L, McGlade E, Yurgelun-Todd D, Renshaw PF, Kondo DG. Effect of Altitude on Veteran Suicide Rates. High Alt Med Biol 2019; 20:171-177. [PMID: 31045435 PMCID: PMC6602111 DOI: 10.1089/ham.2018.0130] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Accepted: 03/15/2019] [Indexed: 11/12/2022] Open
Abstract
Aims: Suicide rates in the general population in the United States are correlated with altitude. To explore factors contributing to suicide among military veterans, we examined the relationship between veteran state-level suicide rates and altitude for 2014, including firearm-related and nonfirearm-related rates. Methods: Pearson's coefficients were calculated for altitude and each outcome. Mixed linear models were used to determine the association between suicide and altitude while adjusting for demographic confounds. Results: State mean altitude was significantly correlated with total veteran suicide rate (r = 0.678, p < 0.0001), veteran firearm-related suicide rate (r = 0.578, p < 0.0001), and veteran nonfirearm suicide rate (r = 0.609, p < 0.0001). In mixed models, altitude was significantly correlated with total veteran suicide rate (β = 0.331, p < 0.05), veteran firearm suicides (β = 0.282, p < 0.05), and veteran nonfirearm suicides (β = 0.393, p < 0.05). Conclusion: This study adds to evidence linking altitude and suicide rates, arguing for additional research into the relationship between altitude and suicide among veterans.
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Affiliation(s)
- Hana Sabic
- Brain Institute, University of Utah, Salt Lake City, Utah
| | - Brent Kious
- Department of Psychiatry, University of Utah, Salt Lake City, Utah
| | - Danielle Boxer
- Brain Institute, University of Utah, Salt Lake City, Utah
| | | | - Colin Riley
- Brain Institute, University of Utah, Salt Lake City, Utah
| | - Lindsay Scholl
- Brain Institute, University of Utah, Salt Lake City, Utah
| | - Erin McGlade
- Brain Institute, University of Utah, Salt Lake City, Utah
- Department of Psychiatry, University of Utah, Salt Lake City, Utah
- Veterans Integrated Service Network 19 Mental Illness Research Education Clinical, Centers of Excellence, Salt Lake City Veterans Affairs Medical Center, Salt Lake City, Utah
| | - Deborah Yurgelun-Todd
- Brain Institute, University of Utah, Salt Lake City, Utah
- Department of Psychiatry, University of Utah, Salt Lake City, Utah
- Veterans Integrated Service Network 19 Mental Illness Research Education Clinical, Centers of Excellence, Salt Lake City Veterans Affairs Medical Center, Salt Lake City, Utah
| | - Perry F. Renshaw
- Brain Institute, University of Utah, Salt Lake City, Utah
- Department of Psychiatry, University of Utah, Salt Lake City, Utah
- Veterans Integrated Service Network 19 Mental Illness Research Education Clinical, Centers of Excellence, Salt Lake City Veterans Affairs Medical Center, Salt Lake City, Utah
| | - Douglas G. Kondo
- Brain Institute, University of Utah, Salt Lake City, Utah
- Department of Psychiatry, University of Utah, Salt Lake City, Utah
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Alex RM, Panza GS, Hakim H, Badr MS, Edwards BA, Sands SA, Mateika JH. Exposure to mild intermittent hypoxia increases loop gain and the arousal threshold in participants with obstructive sleep apnoea. J Physiol 2019; 597:3697-3711. [DOI: 10.1113/jp277711] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Accepted: 04/04/2019] [Indexed: 01/03/2023] Open
Affiliation(s)
- Raichel M. Alex
- John D. Dingell Veterans Affairs Medical Center Detroit MI 48201 USA
- Department of PhysiologyWayne State University School of Medicine Detroit MI 48201 USA
| | - Gino S. Panza
- John D. Dingell Veterans Affairs Medical Center Detroit MI 48201 USA
- Department of PhysiologyWayne State University School of Medicine Detroit MI 48201 USA
| | - Huzaifa Hakim
- John D. Dingell Veterans Affairs Medical Center Detroit MI 48201 USA
- Department of PhysiologyWayne State University School of Medicine Detroit MI 48201 USA
| | - M. Safwan Badr
- John D. Dingell Veterans Affairs Medical Center Detroit MI 48201 USA
- Department of PhysiologyWayne State University School of Medicine Detroit MI 48201 USA
- Department of Internal MedicineWayne State University School of Medicine Detroit MI 48201 USA
| | - Bradley A. Edwards
- Sleep and Circadian Medicine LaboratoryDepartment of Physiology Monash University Melbourne Australia
- School of Psychological Sciences and Monash Institute of Cognitive and Clinical NeurosciencesMonash University Melbourne Australia
| | - Scott A. Sands
- Division of Sleep and Circadian DisordersBrigham and Women's Hospital and Harvard Medical School Boston MA USA
| | - Jason H. Mateika
- John D. Dingell Veterans Affairs Medical Center Detroit MI 48201 USA
- Department of PhysiologyWayne State University School of Medicine Detroit MI 48201 USA
- Department of Internal MedicineWayne State University School of Medicine Detroit MI 48201 USA
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Aishah A, Hinton T, Waters KA, Machaalani R. The α3 and α4 nicotinic acetylcholine receptor (nAChR) subunits in the brainstem medulla of sudden infant death syndrome (SIDS). Neurobiol Dis 2019; 125:23-30. [PMID: 30665006 DOI: 10.1016/j.nbd.2019.01.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Revised: 01/15/2019] [Accepted: 01/16/2019] [Indexed: 12/17/2022] Open
Abstract
SIDS occurs in early infancy and predominantly during a sleep period. Abnormalities in nicotine receptor binding and in the expression of the nicotinic acetylcholine receptor (nAChR) subunits α7 and β2 have been reported in the brainstem of SIDS infants. This study focuses on the α3 and α4 nAChR subunits as α3 is important for early postnatal survival while α4 is crucial for nicotine-elicited antinociception and sleep-wake cycle regulation. Tissue from the rostral medulla of infants who died with a known cause of death (eSUDI, n = 7), and from SIDS classified as SIDS I (n = 8) and SIDS II (n = 27), was immunohistochemically stained for the α3 and α4 nAChR subunits and quantified in 9 nuclei comparing amongst these groups. The association with risk factors of sex, cigarette smoke exposure, upper respiratory tract infection (URTI), prone sleeping and bedsharing was also evaluated. Results showed that only α4 changes (increase) were evident in SIDS, occurring in the hypoglossal and cuneate nuclei of SIDS II infants and the nucleus of the spinal trigeminal tract of SIDS I infants. Amongst the SIDS infants, cigarette smoke exposure was only associated with decreased α4 in cribriform fibre tracts, while sex and bedsharing were associated with increases in α3 in the dorsal motor nucleus of the vagus and solitary nucleus, respectively. Combined, these findings suggest that abnormalities in endogenous acetylcholine synthesis and regulation may underlie the altered α3 and α4 nAChR subunit expressions in the SIDS brainstem medulla since the changes were not related to cigarette smoke exposure.
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Affiliation(s)
- Atqiya Aishah
- Discipline of Pharmacology, Faculty of Health and Medicine, The University of Sydney, NSW 2006, Australia; The Bosch Institute, Faculty of Health and Medicine, The University of Sydney, NSW 2006, Australia
| | - Tina Hinton
- Discipline of Pharmacology, Faculty of Health and Medicine, The University of Sydney, NSW 2006, Australia; The Bosch Institute, Faculty of Health and Medicine, The University of Sydney, NSW 2006, Australia
| | - Karen A Waters
- Central Clinical School of Medicine, Faculty of Health and Medicine, The University of Sydney, NSW 2006, Australia
| | - Rita Machaalani
- The Bosch Institute, Faculty of Health and Medicine, The University of Sydney, NSW 2006, Australia; Central Clinical School of Medicine, Faculty of Health and Medicine, The University of Sydney, NSW 2006, Australia.
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Yang CY, Weng YH, Chiu YW. Relationship between ozone air pollution and daily suicide mortality: a time-stratified case-crossover study in Taipei. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2019; 82:261-267. [PMID: 30870114 DOI: 10.1080/15287394.2019.1589109] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Several studies suggested short-term exposure to air pollution might be associated with suicide mortality, although results have been inconsistent and vary depending upon the type of air contaminants. While seasonal variation associated with suicide was reported to occur and that in the spring and early summer there are peaks in ozone (O3) distribution, the relationship between these two parameters is not known. The aim of this study was to examine the potential association between O3 levels and daily mortality rate related to suicide in Taipei for the period 2004-2008 using a time-stratified case-crossover analysis. In our single pollutant model without adjustment for other pollutants, the risk of suicide increased by 11% on warm days and 15% on cool days for each interquartile range (IQR) rise in O3 concentration, respectively. The relationship was positive but did not reach significance. In our two-pollutant models, O3 remained non-significant on warm days after inclusion of one of any other ambient air contaminants into the model. However, on cool days, a significant association was found between O3 levels and enhanced risk of mortality due to suicide after nitrogen dioxide (NO2) or carbon monoxide (CO) were included. The overall positive but not significant findings of elevated risk of mortality frequently attributed to suicide on days with higher O3 levels suggest that outdoor exposures to this gaseous contaminant may contribute to increases in daily mortality rate related to suicide.
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Affiliation(s)
- Chun-Yuh Yang
- a Department of Public Health, College of Health Sciences , Kaohsiung Medical University , Kaohsiung , Taiwan
- b National Institute of Environmental Health Sciences, National Health Research Institute , Miaoli , Taiwan
| | - Yi-Hao Weng
- c Division of Neonatology, Department of Pediatrics, Chang Gung Memorial Hospital , Chang Gung University College of Medicine , Taipei , Taiwan
| | - Ya-Wen Chiu
- d Master Program in Global Health and Development, College of Public Health and Nutrition , Taipei Medical University , Taipei , Taiwan
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Abstract
After participating in this activity, learners should be better able to:• Assess epidemiologic evidence that increased altitude of residence is linked to increased risk of depression and suicide• Evaluate strategies to address hypoxia-related depression and suicidal ideation ABSTRACT: Suicide and major depressive disorder (MDD) are complex conditions that almost certainly arise from the influences of many interrelated factors. There are significant regional variations in the rates of MDD and suicide in the United States, suggesting that sociodemographic and environmental conditions contribute. Here, we review epidemiological evidence that increases in the altitude of residence are linked to the increased risk of depression and suicide. We consider the possibility that chronic hypobaric hypoxia (low blood oxygen related to low atmospheric pressure) contributes to suicide and depression, which is suggested by animal models, short-term studies in humans, and the effects of hypoxic medical conditions on suicide and depression. We argue that hypobaric hypoxia could promote suicide and depression by altering serotonin metabolism and brain bioenergetics; both of these pathways are implicated in depression, and both are affected by hypoxia. Finally, we briefly examine treatment strategies to address hypoxia-related depression and suicidal ideation that are suggested by these findings, including creatine monohydrate and the serotonin precursors tryptophan and 5-hydroxytryptophan.
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Kious BM, Bakian A, Zhao J, Mickey B, Guille C, Renshaw P, Sen S. Altitude and risk of depression and anxiety: findings from the intern health study. Int Rev Psychiatry 2019; 31:637-645. [PMID: 31084447 PMCID: PMC8530170 DOI: 10.1080/09540261.2019.1586324] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Multiple studies suggest that the risks of depression and suicide increase with increasing altitude of residence, but no studies have assessed whether changing altitude changes these risks. To address this gap, this study used data from the Intern Health Study, which follows students from the end of medical school through the first year of residency, recording depression via the 9-item Patient Health Questionnaire (PHQ-9), anxiety via the 7-item Generalized Anxiety Disorder Questionnaire (GAD-7), and multiple risk factors for these symptoms. Data from 3764 medical students representing 46 schools and 282 residencies were available. Odds ratios (OR) representing the effects of altitude on psychiatric symptoms were estimated using generalized linear models. After excluding participants with missing altitude data, 3731 medical students were analyzed. High altitude residence (> 900 m) was significantly associated with PHQ-9 total score (OR = 1.32, 95% CI = 1.001-1.75, p < 0.05), and PHQ-9 suicidal ideation (OR = 1.79, 95% CI = 1.08-0.02, p = 0.02). Moving from low to high altitude was significantly associated with PHQ-9 total score (OR = 1.47, 95% CI = 1.087-1.98, p = 0.01), GAD-7 total score (OR = 1.40, 95% CI = 1.0040-1.95, p < 0.05), and PHQ-9 suicidal ideation (OR = 1.10, 95% CI = 1.01-1.19, p = 0.02). The data suggest that moving from low to high altitude is associated with increasing symptoms of depression, anxiety, and suicidal ideation.
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Affiliation(s)
- Brent M. Kious
- Department of Psychiatry, University of Utah, Salt Lake City, UT, USA
| | - Amanda Bakian
- Department of Psychiatry, University of Utah, Salt Lake City, UT, USA
| | - Joan Zhao
- Department of Psychiatry, University of Michigan, Ann Arbor, MI, USA
| | - Brian Mickey
- Department of Psychiatry, University of Utah, Salt Lake City, UT, USA
| | - Constance Guille
- Department of Psychiatry, Medical University of South Carolina, Charleston, SC, USA
| | - Perry Renshaw
- Department of Psychiatry, University of Utah, Salt Lake City, UT, USA
| | - Srijan Sen
- Department of Psychiatry, University of Michigan, Ann Arbor, MI, USA
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Plans L, Barrot C, Nieto E, Rios J, Schulze TG, Papiol S, Mitjans M, Vieta E, Benabarre A. Association between completed suicide and bipolar disorder: A systematic review of the literature. J Affect Disord 2019; 242:111-122. [PMID: 30173059 DOI: 10.1016/j.jad.2018.08.054] [Citation(s) in RCA: 142] [Impact Index Per Article: 28.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Revised: 07/25/2018] [Accepted: 08/12/2018] [Indexed: 02/06/2023]
Abstract
BACKGROUND Completed suicide is a major cause of death in bipolar disorder (BD) patients. OBJECTIVE The aim of this paper is to provide an overall review of the existing literature of completed suicide in BD patients, including clinical and genetic data DATA SOURCES: We performed a systematic review of English and non-English articles published on MEDLINE/PubMed, PsycInfo and Cochrane database (1970-2017). Additional studies were identified by contacting clinical experts, searching bibliographies, major textbooks and website of World Health Organization. Initially we did a broad search for the association of bipolar disorder and suicide and we were narrowing the search in terms included "bipolar disorder" and "completed suicide". STUDY SELECTION Inclusion criteria were articles about completed suicide in patients with BD. Articles exclusively focusing on suicide attempts and suicidal behaviour have been excluded. We used PRISMA (Preferred Reporting Items for Systematic reviews and Meta-Analyses) consensus for drafting this systematic review. RESULTS The initial search generated 2806 articles and a total of 61 meeting our inclusion criteria. We reviewed epidemiological data, genetic factors, risk factors and treatment of completed suicide in BD. Suicide rates in BD vary between studies but our analyses show that they are approximately 20-30-fold greater than in general population. The highest risk of successful suicide was observed in BD-II subjects. The heritability of completed suicide is about 40% and some genes related to major neurotransmitter systems have been associated with suicide. Lithium is the only treatment that has shown anti-suicide potential. LIMITATIONS The most important limitation of the present review is the limited existing literature on completed suicide in BD. CONCLUSIONS BD patients are at high risk for suicide. It is possible to identify some factors related to completed suicide, such as early onset, family history of suicide among first-degree relatives, previous attempted suicides, comorbidities and treatment. However it is necessary to promote research on this serious health problem.
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Affiliation(s)
- L Plans
- Mental Health Division of Althaia, Xarxa Assistencial Universitària de Manresa, Catalonia, Spain
| | - C Barrot
- Forensic Genetic Laboratori, University of Barcelona, Catalonia, Spain
| | - E Nieto
- Mental Health Division of Althaia, Xarxa Assistencial Universitària de Manresa, Catalonia, Spain
| | - J Rios
- Universitat Autònoma de Barcelona, Laboratório de Bioestatística e Epidemiologia, Barcelona, Spain; Hospital Clínic, IDIBAPS, Bioestadística y Plataforma de Gestión de Datos, Barcelona, Spain
| | - T G Schulze
- Institute of Psychiatric Phenomics and Genomics (IPPG), University Hospital, Ludwig Maximilian University, Munich, Germany
| | - S Papiol
- Institute of Psychiatric Phenomics and Genomics (IPPG), University Hospital, Ludwig Maximilian University, Munich, Germany; Department of Psychiatry and Psychotherapy, University Hospital, Ludwig Maximilian University, Munich, Germany
| | - M Mitjans
- Clinical Neuroscience, Max Planck Institute of Experimental Medicine, Göttingen, Germany
| | - E Vieta
- Bipolar Disorder Program, Hospital Clinic, University of Barcelona, IDIBAPS, CIBERSAM, Barcelona, Catalonia, Spain.
| | - A Benabarre
- Bipolar Disorder Program, Hospital Clinic, University of Barcelona, IDIBAPS, CIBERSAM, Barcelona, Catalonia, Spain
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Latshang TD, Tardent RPM, Furian M, Flueck D, Segitz SD, Mueller-Mottet S, Kohler M, Ulrich S, Bloch KE. Sleep and breathing disturbances in patients with chronic obstructive pulmonary disease traveling to altitude: a randomized trial. Sleep 2018; 42:5229280. [DOI: 10.1093/sleep/zsy203] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Indexed: 11/12/2022] Open
Affiliation(s)
- Tsogyal D Latshang
- Department of Respiratory Medicine, Sleep Disorders Center, University Hospital Zurich, Zurich, Switzerland and Center for Integrative Human Physiology, University of Zurich, Zurich, Switzerland
| | - René P M Tardent
- Department of Respiratory Medicine, Sleep Disorders Center, University Hospital Zurich, Zurich, Switzerland and Center for Integrative Human Physiology, University of Zurich, Zurich, Switzerland
| | - Michael Furian
- Department of Respiratory Medicine, Sleep Disorders Center, University Hospital Zurich, Zurich, Switzerland and Center for Integrative Human Physiology, University of Zurich, Zurich, Switzerland
| | - Deborah Flueck
- Department of Respiratory Medicine, Sleep Disorders Center, University Hospital Zurich, Zurich, Switzerland and Center for Integrative Human Physiology, University of Zurich, Zurich, Switzerland
| | - Sebastian D Segitz
- Department of Respiratory Medicine, Sleep Disorders Center, University Hospital Zurich, Zurich, Switzerland and Center for Integrative Human Physiology, University of Zurich, Zurich, Switzerland
| | - Séverine Mueller-Mottet
- Department of Respiratory Medicine, Sleep Disorders Center, University Hospital Zurich, Zurich, Switzerland and Center for Integrative Human Physiology, University of Zurich, Zurich, Switzerland
| | - Malcolm Kohler
- Department of Respiratory Medicine, Sleep Disorders Center, University Hospital Zurich, Zurich, Switzerland and Center for Integrative Human Physiology, University of Zurich, Zurich, Switzerland
| | - Silvia Ulrich
- Department of Respiratory Medicine, Sleep Disorders Center, University Hospital Zurich, Zurich, Switzerland and Center for Integrative Human Physiology, University of Zurich, Zurich, Switzerland
| | - Konrad E Bloch
- Department of Respiratory Medicine, Sleep Disorders Center, University Hospital Zurich, Zurich, Switzerland and Center for Integrative Human Physiology, University of Zurich, Zurich, Switzerland
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Huber RS, Kim TS, Kim N, Kuykendall MD, Sherwood SN, Renshaw PF, Kondo DG. Association Between Altitude and Regional Variation of ADHD in Youth. J Atten Disord 2018; 22:1299-1306. [PMID: 25808310 PMCID: PMC5511093 DOI: 10.1177/1087054715577137] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
OBJECTIVE The purpose of this study was to evaluate the effect of altitude on rates of ADHD. As decreased dopamine (DA) activity has been reported with ADHD and hypoxia has shown to be associated with increased DA, we hypothesized that states at higher altitudes would have lower rates of ADHD. METHOD State estimates from the 2007 National Survey of Children's Health (NSCH) report and 2010 National Survey of Children with Special Health Care Needs (NS-CSHCN) report were used to extract the percentages of youth ages 4 to 17 diagnosed with ADHD. RESULTS Both the datasets independently revealed that the prevalence of ADHD decreases with increasing altitude ( R2 = .38, p < .001; R2 = .31, p < .001), respectively. This study controlled for potential confounds (e.g., low birth weight, ethnicity, and household size). CONCLUSION These findings suggest a need for further investigation into the extent by which altitude may serve as a protective factor for ADHD.
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Affiliation(s)
- Rebekah S. Huber
- University of Utah, Salt Lake City, USA
- Veterans Affairs Medical Center, Salt Lake City, UT, USA
| | - Tae-Suk Kim
- University of Utah, Salt Lake City, USA
- Catholic University of Korea, Seoul, South Korea
| | - Namkug Kim
- University of Utah, Salt Lake City, USA
- University of Ulsan, Seoul, South Korea
| | | | | | - Perry F. Renshaw
- University of Utah, Salt Lake City, USA
- Veterans Affairs Medical Center, Salt Lake City, UT, USA
| | - Douglas G. Kondo
- University of Utah, Salt Lake City, USA
- Veterans Affairs Medical Center, Salt Lake City, UT, USA
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Roy K, Chauhan G, Kumari P, Wadhwa M, Alam S, Ray K, Panjwani U, Kishore K. Phosphorylated delta sleep inducing peptide restores spatial memory and p-CREB expression by improving sleep architecture at high altitude. Life Sci 2018; 209:282-290. [PMID: 30107169 DOI: 10.1016/j.lfs.2018.08.026] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Revised: 08/07/2018] [Accepted: 08/10/2018] [Indexed: 12/27/2022]
Abstract
AIMS Sleep loss at high altitude (HA) play major role in worsening of neuropsychological functions, such as attention, memory and decision making. This study investigates the role of phosphorylated delta sleep inducing peptide (p-DSIP) in improving sleep architecture during chronic hypobaric hypoxia (HH) exposure and restoration of spatial navigational memory. METHODS Morris water maze (MWM) trained rats were exposed to HH at 7620 m. p-DSIP was injected intra-peritoneally (10 μg/Kg bw) during HH exposure as an intervention against sleep alteration. Sleep architecture was recorded telemetrically before and during HH exposure. Monoamines were estimated by high performance liquid chromatography from brain stem (BS) and hypothalamus. CREB and p-CREB level in hippocampus was studied by western blotting and expression of different monoamine regulatory enzymes in BS was measured by flow cytometry. Naloxone (1 mg/kg bw), a μ opioid receptor antagonist of sleep inducing effect of DSIP was also studied. KEY FINDINGS p-DSIP injection daily in circadian active period (18.30 h) during chronic HH enhanced non rapid eye movement sleep, rapid eye movement sleep as well as improved MWM performance of rats. p-DSIP treatment showed lower monoamine level and tyrosine hydroxylase (TH) expression and increased monoamine oxidase A (MAO A), glutamic acid decarboxylase (GAD) and Choline acetyltransferase (ChAT) expression. Further, naloxone altered navigational memory by decreasing the CREB and p-CREB level in hippocampus suggesting suppression of sleep inducing effect of p-DSIP. SIGNIFICANCE Our study demonstrates that improvement of sleep quality by p-DSIP restores spatial memory by up regulating CREB phosphorylation during simulated high altitude hypoxia.
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Affiliation(s)
- Koustav Roy
- Defence Institute of Physiology and Allied Sciences (DIPAS), Defence Research and Development Organization (DRDO), Lucknow Road, Timarpur, Delhi 110 054, India
| | - Garima Chauhan
- Defence Institute of Physiology and Allied Sciences (DIPAS), Defence Research and Development Organization (DRDO), Lucknow Road, Timarpur, Delhi 110 054, India
| | - Punita Kumari
- Defence Institute of Physiology and Allied Sciences (DIPAS), Defence Research and Development Organization (DRDO), Lucknow Road, Timarpur, Delhi 110 054, India
| | - Meetu Wadhwa
- Defence Institute of Physiology and Allied Sciences (DIPAS), Defence Research and Development Organization (DRDO), Lucknow Road, Timarpur, Delhi 110 054, India
| | - Shahnawaz Alam
- Defence Institute of Physiology and Allied Sciences (DIPAS), Defence Research and Development Organization (DRDO), Lucknow Road, Timarpur, Delhi 110 054, India
| | - Koushik Ray
- Defence Institute of Physiology and Allied Sciences (DIPAS), Defence Research and Development Organization (DRDO), Lucknow Road, Timarpur, Delhi 110 054, India
| | - Usha Panjwani
- Defence Institute of Physiology and Allied Sciences (DIPAS), Defence Research and Development Organization (DRDO), Lucknow Road, Timarpur, Delhi 110 054, India
| | - Krishna Kishore
- Defence Institute of Physiology and Allied Sciences (DIPAS), Defence Research and Development Organization (DRDO), Lucknow Road, Timarpur, Delhi 110 054, India.
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Reno E, Brown TL, Betz ME, Allen MH, Hoffecker L, Reitinger J, Roach R, Honigman B. Suicide and High Altitude: An Integrative Review. High Alt Med Biol 2018; 19:99-108. [DOI: 10.1089/ham.2016.0131] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Affiliation(s)
- Elaine Reno
- Department of Emergency Medicine, University of Colorado School of Medicine, Aurora, Colorado
| | - Talia L. Brown
- Boulder County Public Health, Colorado School of Public Health, Aurora, Colorado
| | - Marian E. Betz
- Department of Emergency Medicine, University of Colorado School of Medicine, Aurora, Colorado
| | - Michael H. Allen
- Johnson Depression Center, Department of Psychiatry and Emergency Medicine, University of Colorado School of Medicine, Aurora, Colorado
| | - Lilian Hoffecker
- Health Sciences Library, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Jeremy Reitinger
- Altitude Research Center, Department of Emergency Medicine, University of Colorado School of Medicine, Aurora, Colorado
| | - Robert Roach
- Altitude Research Center, Department of Emergency Medicine, University of Colorado School of Medicine, Aurora, Colorado
| | - Benjamin Honigman
- Altitude Research Center, Department of Emergency Medicine, University of Colorado School of Medicine, Aurora, Colorado
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Kanekar S, Sheth CS, Ombach HJ, Olson PR, Bogdanova OV, Petersen M, Renshaw CE, Sung YH, D'Anci KE, Renshaw PF. Hypobaric hypoxia exposure in rats differentially alters antidepressant efficacy of the selective serotonin reuptake inhibitors fluoxetine, paroxetine, escitalopram and sertraline. Pharmacol Biochem Behav 2018; 170:25-35. [PMID: 29738811 DOI: 10.1016/j.pbb.2018.05.002] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Revised: 05/01/2018] [Accepted: 05/03/2018] [Indexed: 01/19/2023]
Abstract
Treatment-resistant depression, a chronic condition that affects 30% of depressed patients on antidepressants, is highly linked to suicidal behavior. Chronic hypoxia exposure via living at altitude (hypobaric hypoxia) or with chronic hypoxic diseases is demographically linked to increased risk for depression and suicide. We previously demonstrated that housing rats at altitude for a week incrementally increases depression-like behavior in the forced swim test (FST) in females, but not males. In animal models, high altitude exposure reduces brain serotonin, and selective serotonin reuptake inhibitors (SSRIs) can lose efficacy when brain serotonin levels are low. To address whether residence at moderate altitude is detrimental to SSRI function, we examined SSRI efficacy in the FST after a week of housing rats at altitudes of 4500 ft. or 10,000 ft. as compared to at sea level. In females, the tricyclic antidepressant desipramine (positive control) functioned well in all groups, increasing latency to immobility and decreasing immobility, by increasing climbing. However, the SSRIs fluoxetine, paroxetine and escitalopram were ineffective in females in all groups: only paroxetine improved swimming in the FST as expected of a SSRI, while all three unexpectedly reduced climbing. Fluoxetine was also ineffective in male rats. Sertraline was the only SSRI with antidepressant efficacy at altitude in both females and males, increasing swimming, climbing and latency to immobility, and reducing immobility. Hypobaric hypoxia thus appears to be detrimental to efficacy of the SSRIs fluoxetine, paroxetine and escitalopram, but not of sertraline. Unlike the other SSRIs, sertraline can improve both serotonergic and dopaminergic transmission, and may be less impacted by a hypoxia-induced serotonin deficit. A targeted approach may thus be necessary for successful antidepressant treatment in patients with depression who live at altitude or with chronic hypoxic diseases, and that sertraline may be the SSRI of choice for prescription for this population.
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Affiliation(s)
- Shami Kanekar
- Diagnostic Neuroimaging, Department of Psychiatry, University of Utah, Salt Lake City, UT, United States; VISN19 MIRECC, 500 Foothill Drive, Salt Lake City, UT 84148, United States; The Brain Institute, University of Utah, 383 Colorow Drive, Salt Lake City, UT 84108, United States.
| | - Chandni S Sheth
- Diagnostic Neuroimaging, Department of Psychiatry, University of Utah, Salt Lake City, UT, United States
| | - Hendrik J Ombach
- Diagnostic Neuroimaging, Department of Psychiatry, University of Utah, Salt Lake City, UT, United States
| | - Paul R Olson
- The Brain Institute, University of Utah, 383 Colorow Drive, Salt Lake City, UT 84108, United States
| | - Olena V Bogdanova
- The Brain Institute, University of Utah, 383 Colorow Drive, Salt Lake City, UT 84108, United States
| | - Matthew Petersen
- Diagnostic Neuroimaging, Department of Psychiatry, University of Utah, Salt Lake City, UT, United States
| | - Chloe E Renshaw
- Diagnostic Neuroimaging, Department of Psychiatry, University of Utah, Salt Lake City, UT, United States
| | - Young-Hoon Sung
- Diagnostic Neuroimaging, Department of Psychiatry, University of Utah, Salt Lake City, UT, United States
| | | | - Perry F Renshaw
- Diagnostic Neuroimaging, Department of Psychiatry, University of Utah, Salt Lake City, UT, United States; VISN19 MIRECC, 500 Foothill Drive, Salt Lake City, UT 84148, United States; The Brain Institute, University of Utah, 383 Colorow Drive, Salt Lake City, UT 84108, United States; Veterans Affairs Salt Lake City Health Care System, 500 Foothill Drive, Salt Lake City, UT 84148, United States
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Kumari P, Kauser H, Wadhwa M, Roy K, Alam S, Sahu S, Kishore K, Ray K, Panjwani U. Hypobaric hypoxia impairs cued and contextual fear memory in rats. Brain Res 2018; 1692:118-133. [PMID: 29705603 DOI: 10.1016/j.brainres.2018.04.026] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Revised: 04/17/2018] [Accepted: 04/23/2018] [Indexed: 01/13/2023]
Abstract
Fear memory is essential for survival, and its dysregulation leads to disorders. High altitude hypobaric hypoxia (HH) is known to induce cognitive decline. However, its effect on fear memory is still an enigma. We aimed to investigate the temporal effect of HH on fear conditioning and the underlying mechanism. Adult male Sprague-Dawley rats were trained for fear conditioning and exposed to simulated HH equivalent to 25,000 ft for different durations (1, 3, 7, 14 and 21 days). Subsequently, rats were tested for cued and contextual fear conditioning. Neuronal morphology, apoptosis and DNA fragmentation were studied in the medial prefrontal cortex (mPFC), hippocampus and basolateral amygdala (BLA). We observed significant deficit in cued and contextual fear acquisition (at 1, 3 and 7 days) and consolidation (cued at 1 and 3 days and contextual fear at 1, 3 and 7 days) under HH. HH exposure with retraining showed the earlier restoration of contextual fear memory. Further, we found a gradual increase in the number of pyknotic and apoptotic neurons together with the increase in DNA fragmentation in mPFC, hippocampus, and BLA up to 7 days of HH exposure. The present study concludes that HH exposure equivalent to 25,000 ft induced cued and contextual fear memory deficit (acquisition and consolidation) which is found to be correlated with the neurodegenerative changes in the limbic brain regions.
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Affiliation(s)
- Punita Kumari
- Defence Institute of Physiology and Allied Sciences (DIPAS), Defence Research and Development Organization (DRDO), Lucknow Road, Timarpur, Delhi 110054, India
| | - Hina Kauser
- Defence Institute of Physiology and Allied Sciences (DIPAS), Defence Research and Development Organization (DRDO), Lucknow Road, Timarpur, Delhi 110054, India
| | - Meetu Wadhwa
- Defence Institute of Physiology and Allied Sciences (DIPAS), Defence Research and Development Organization (DRDO), Lucknow Road, Timarpur, Delhi 110054, India
| | - Koustav Roy
- Defence Institute of Physiology and Allied Sciences (DIPAS), Defence Research and Development Organization (DRDO), Lucknow Road, Timarpur, Delhi 110054, India
| | - Shahnawaz Alam
- Defence Institute of Physiology and Allied Sciences (DIPAS), Defence Research and Development Organization (DRDO), Lucknow Road, Timarpur, Delhi 110054, India
| | - Surajit Sahu
- Defence Institute of Physiology and Allied Sciences (DIPAS), Defence Research and Development Organization (DRDO), Lucknow Road, Timarpur, Delhi 110054, India
| | - Krishna Kishore
- Defence Institute of Physiology and Allied Sciences (DIPAS), Defence Research and Development Organization (DRDO), Lucknow Road, Timarpur, Delhi 110054, India
| | - Koushik Ray
- Defence Institute of Physiology and Allied Sciences (DIPAS), Defence Research and Development Organization (DRDO), Lucknow Road, Timarpur, Delhi 110054, India
| | - Usha Panjwani
- Defence Institute of Physiology and Allied Sciences (DIPAS), Defence Research and Development Organization (DRDO), Lucknow Road, Timarpur, Delhi 110054, India.
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Zaeh S, Miele CH, Putcha N, Gilman RH, Miranda JJ, Bernabe-Ortiz A, Wise RA, Checkley W. Chronic respiratory disease and high altitude are associated with depressive symptoms in four diverse settings. Int J Tuberc Lung Dis 2018; 20:1263-9. [PMID: 27510256 DOI: 10.5588/ijtld.15.0794] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
SETTING Depression is a prevalent comorbidity of chronic respiratory disease (CRD), and may indicate worse clinical outcomes. The relationship between depression and living with chronic hypoxia due to CRD or residence at altitude has received little attention in resource-poor settings. OBJECTIVE To investigate the association between CRD conditions and depressive symptoms in four settings in Peru. DESIGN We collected data on CRD and depressive symptoms in adults aged ⩾35 years. Depressive symptoms were measured according to the Center for Epidemiologic Studies Depression scale. Multivariable ordinal logistic regression was used to assess the adjusted odds of being in a higher category of depressive symptoms as a function of CRD. RESULTS We analyzed data from 2953 participants (mean age 55.3 years, 49% male). The prevalence of major depressive symptoms was 19%, with significant variation according to setting. Participants with at least one CRD (OR 1.34, 95%CI 1.06-1.69) and those living at altitude (OR 1.64, 95%CI 1.10-2.43) had an increased adjusted odds of being in a higher category of depressive symptoms. CONCLUSION We found a high prevalence of depressive symptoms, and a positive association between depressive symptoms with CRD and with living at altitude, both of which cause chronic hypoxia.
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Affiliation(s)
- S Zaeh
- Division of Pulmonary and Critical Care, School of Medicine, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland, USA
| | - C H Miele
- Division of Pulmonary and Critical Care, School of Medicine, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland, USA
| | - N Putcha
- Division of Pulmonary and Critical Care, School of Medicine, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland, USA
| | - R H Gilman
- Program in Global Disease Epidemiology and Control, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland, USA
| | - J J Miranda
- CRONICAS Center of Excellence in Chronic Diseases, Universidad Peruana Cayetano Heredia, Lima, Department of Medicine, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - A Bernabe-Ortiz
- CRONICAS Center of Excellence in Chronic Diseases, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - R A Wise
- Division of Pulmonary and Critical Care, School of Medicine, School of Medicine, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland, USA
| | - W Checkley
- Division of Pulmonary and Critical Care, School of Medicine, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland, USA; School of Medicine, Program in Global Disease Epidemiology and Control, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland, USA
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Sheth C, Ombach H, Olson P, Renshaw PF, Kanekar S. Increased Anxiety and Anhedonia in Female Rats Following Exposure to Altitude. High Alt Med Biol 2018; 19:81-90. [PMID: 29431475 DOI: 10.1089/ham.2017.0125] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Sheth, Chandni, Hendrik Ombach, Paul Olson, Perry F. Renshaw, and Shami Kanekar. Increased anxiety and anhedonia in female rats following exposure to altitude. High Alt Med Biol. 19:81-90, 2018.-Anxiety disorders are chronic, highly prevalent conditions, often comorbid with depression. Both anxiety and depression form major risk factors for suicide. Living at altitude is associated with higher rates of depression and suicide, leading us to address whether anxiety disorders may also be amplified at altitude. Using a novel translational animal model, we previously showed that depression-like behavior increases with altitude of housing in female, but not male rats. We now use this model to examine the effects of altitude on both anxiety-like behavior and anhedonia, a core symptom of depression. After housing for a week at sea level, 4500 or 10,000 ft, rats were evaluated for anxiety in the open-field test or the elevated plus maze, and anhedonia in the sucrose preference test. Another group was tested at baseline. Anxiety-like behavior increased in females housed at altitude. In females, lower sucrose preference was seen in those housed at 10,000 ft versus those at sea level. Males showed no change in anxiety or anhedonia across groups. These data suggest that living at moderate-high altitude may pose a risk factor for those vulnerable to anxiety disorders, with the potential to be particularly detrimental to females at altitude.
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Affiliation(s)
- Chandni Sheth
- 1 Diagnostic Neuroimaging, Department of Psychiatry, University of Utah School of Medicine , Salt Lake City, Utah
| | - Hendrik Ombach
- 1 Diagnostic Neuroimaging, Department of Psychiatry, University of Utah School of Medicine , Salt Lake City, Utah
| | - Paul Olson
- 1 Diagnostic Neuroimaging, Department of Psychiatry, University of Utah School of Medicine , Salt Lake City, Utah
| | - Perry F Renshaw
- 1 Diagnostic Neuroimaging, Department of Psychiatry, University of Utah School of Medicine , Salt Lake City, Utah.,2 VISN 19 Mental Illness Research, Education and Clinical Center (MIRREC) , Salt Lake City Veterans Health Administration, Salt Lake City, Utah
| | - Shami Kanekar
- 1 Diagnostic Neuroimaging, Department of Psychiatry, University of Utah School of Medicine , Salt Lake City, Utah.,2 VISN 19 Mental Illness Research, Education and Clinical Center (MIRREC) , Salt Lake City Veterans Health Administration, Salt Lake City, Utah
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Arns M, Swanson JM, Arnold LE. ADHD Prevalence: Altitude or Sunlight? Better Understanding the Interrelations of Dopamine and the Circadian System. J Atten Disord 2018; 22:163-166. [PMID: 26341278 DOI: 10.1177/1087054715599574] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Martijn Arns
- 1 Research Institute Brainclinics, Nijmegen, The Netherlands.,2 Utrecht University, The Netherlands.,3 neuroCare group, Nijmegen, The Netherlands
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An Open-Label Pilot Study of Combined Augmentation With Creatine Monohydrate and 5-Hydroxytryptophan for Selective Serotonin Reuptake Inhibitor- or Serotonin-Norepinephrine Reuptake Inhibitor-Resistant Depression in Adult Women. J Clin Psychopharmacol 2017; 37:578-583. [PMID: 28787372 PMCID: PMC5578880 DOI: 10.1097/jcp.0000000000000754] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
PURPOSE Many women with major depressive disorder (MDD) respond inadequately to standard treatments. Augmentation of conventional antidepressants with creatine monohydrate and 5-hydroxytryptophan (5-HTP) could correct deficits in serotonin production and brain bioenergetics associated with depression in women, yielding synergistic benefit. We describe an open-label study of 5-HTP and creatine augmentation in women with MDD who had failed selective serotonin reuptake inhibitor (SSRI) or serotonin-norepinephrine reuptake inhibitor (SNRI) monotherapy. METHODS Fifteen women who were adequately adherent to an SSRI or SNRI and currently experiencing MDD, with a 17-item Hamilton Depression Rating Scale (HAM-D) score of 16 or higher, were treated with 5 g of creatine monohydrate daily and 100 mg of 5-HTP twice daily for 8 weeks, with 4 weeks of posttreatment follow-up. The primary outcome was change in mean HAM-D scores. RESULTS Mean HAM-D scores declined from 18.9 (SD, 2.5) at pretreatment visits to 7.5 (SD, 4.4) (P < 0.00001), a decrease of 60%. Participants did not experience any serious treatment-related adverse events. CONCLUSIONS Combination treatment with creatine and 5-HTP may represent an effective augmentation strategy for women with SSRI- or SNRI-resistant depression. Given the limitations of this small, open-label trial, future study in randomized, placebo-controlled trials is warranted.
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Heat stress-induced neuroinflammation and aberration in monoamine levels in hypothalamus are associated with temperature dysregulation. Neuroscience 2017; 358:79-92. [DOI: 10.1016/j.neuroscience.2017.06.023] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 06/04/2017] [Accepted: 06/19/2017] [Indexed: 12/22/2022]
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Gould TD, Georgiou P, Brenner LA, Brundin L, Can A, Courtet P, Donaldson ZR, Dwivedi Y, Guillaume S, Gottesman II, Kanekar S, Lowry CA, Renshaw PF, Rujescu D, Smith EG, Turecki G, Zanos P, Zarate CA, Zunszain PA, Postolache TT. Animal models to improve our understanding and treatment of suicidal behavior. Transl Psychiatry 2017; 7:e1092. [PMID: 28398339 PMCID: PMC5416692 DOI: 10.1038/tp.2017.50] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2016] [Revised: 01/16/2017] [Accepted: 02/01/2017] [Indexed: 02/08/2023] Open
Abstract
Worldwide, suicide is a leading cause of death. Although a sizable proportion of deaths by suicide may be preventable, it is well documented that despite major governmental and international investments in research, education and clinical practice suicide rates have not diminished and are even increasing among several at-risk populations. Although nonhuman animals do not engage in suicidal behavior amenable to translational studies, we argue that animal model systems are necessary to investigate candidate endophenotypes of suicidal behavior and the neurobiology underlying these endophenotypes. Animal models are similarly a critical resource to help delineate treatment targets and pharmacological means to improve our ability to manage the risk of suicide. In particular, certain pathophysiological pathways to suicidal behavior, including stress and hypothalamic-pituitary-adrenal axis dysfunction, neurotransmitter system abnormalities, endocrine and neuroimmune changes, aggression, impulsivity and decision-making deficits, as well as the role of critical interactions between genetic and epigenetic factors, development and environmental risk factors can be modeled in laboratory animals. We broadly describe human biological findings, as well as protective effects of medications such as lithium, clozapine, and ketamine associated with modifying risk of engaging in suicidal behavior that are readily translatable to animal models. Endophenotypes of suicidal behavior, studied in animal models, are further useful for moving observed associations with harmful environmental factors (for example, childhood adversity, mechanical trauma aeroallergens, pathogens, inflammation triggers) from association to causation, and developing preventative strategies. Further study in animals will contribute to a more informed, comprehensive, accelerated and ultimately impactful suicide research portfolio.
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Affiliation(s)
- T D Gould
- Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, USA
- Department of Pharmacology, University of Maryland School of Medicine, Baltimore, MD, USA
- Department of Anatomy and Neurobiology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - P Georgiou
- Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, USA
| | - L A Brenner
- Department of Psychiatry, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
- Rocky Mountain Mental Illness Research Education and Clinical Center, Denver, CO, USA
- Military and Veteran Microbiome Consortium for Research and Education, U.S. Department of Veterans Affairs, Washington, DC, USA
- Department of Physical Medicine and Rehabilitation, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - L Brundin
- Center for Neurodegenerative Science, Van Andel Research Institute, Grand Rapids, MI, USA
| | - A Can
- Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, USA
- Department of Psychology, Notre Dame of Maryland University, Baltimore, MD, USA
| | - P Courtet
- Department of Emergency Psychiatry and Post Acute Care, CHU Montpellier, Montpellier, France
- Université Montpellier, Inserm U1061, Montpellier, France
| | - Z R Donaldson
- Department of Molecular, Cellular, and Developmental Biology, University of Colorado Boulder, Boulder, CO, USA
- Department of Psychology, University of Colorado, Boulder, Boulder, CO, USA
- Department of Neuroscience, University of Colorado Boulder, Boulder, CO, USA
| | - Y Dwivedi
- Department of Psychiatry and Behavioral Neurobiology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - S Guillaume
- Department of Emergency Psychiatry and Post Acute Care, CHU Montpellier, Montpellier, France
- Université Montpellier, Inserm U1061, Montpellier, France
| | - I I Gottesman
- Department of Psychology, University of Minnesota, Minneapolis, MN, USA
- Department of Psychiatry, University of Minnesota Medical School, Minneapolis, MN, USA
| | - S Kanekar
- Department of Psychiatry, University of Utah, Salt Lake City, UT, USA
| | - C A Lowry
- Rocky Mountain Mental Illness Research Education and Clinical Center, Denver, CO, USA
- Military and Veteran Microbiome Consortium for Research and Education, U.S. Department of Veterans Affairs, Washington, DC, USA
- Department of Integrative Physiology and Center for Neuroscience, University of Colorado Boulder, Boulder, CO, USA
- Department of Physical Medicine and Rehabilitation and Center for Neuroscience, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - P F Renshaw
- Rocky Mountain Mental Illness Research Education and Clinical Center, Denver, CO, USA
- Department of Psychiatry, University of Utah, Salt Lake City, UT, USA
| | - D Rujescu
- Department of Psychiatry, University of Halle-Wittenberg, Halle, Germany
| | - E G Smith
- Edith Nourse Rogers Memorial Veterans Hospital, Bedford, MA, USA
| | - G Turecki
- Department of Psychiatry, McGill University, Montreal, QC, Canada
| | - P Zanos
- Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, USA
| | - C A Zarate
- Experimental Therapeutics and Pathophysiology Branch, Intramural Research Program, National Institute of Mental Health, National Institutes of Health, Bethesda, MD, USA
| | - P A Zunszain
- Department of Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - T T Postolache
- Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, USA
- Rocky Mountain Mental Illness Research Education and Clinical Center, Denver, CO, USA
- Military and Veteran Microbiome Consortium for Research and Education, U.S. Department of Veterans Affairs, Washington, DC, USA
- VISN 5 Mental Illness Research Education and Clinical Center, Baltimore MD, USA
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Vivekanandarajah A, Aishah A, Waters KA, Machaalani R. Intermittent hypercapnic hypoxia effects on the nicotinic acetylcholine receptors in the developing piglet hippocampus and brainstem. Neurotoxicology 2017; 60:23-33. [PMID: 28235547 DOI: 10.1016/j.neuro.2017.02.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Revised: 02/07/2017] [Accepted: 02/20/2017] [Indexed: 12/14/2022]
Abstract
This study investigated the effects of acute (1 day) vs repeated (4 days) exposure to intermittent hypercapnic hypoxia (IHH) on the immunohistochemical expression of α2, α3, α5, α7, α9 and β2 nicotinic acetylcholine receptor (nAChR) subunits in the developing piglet hippocampus and brainstem medulla, and how prior nicotine exposure alters the response to acute IHH. Five piglet groups included: 1day IHH (1D IHH, n=9), 4days IHH (4D IHH, n=8), controls exposed only to air cycles for 1day (1D Air, n=6) or 4days (4D Air, n=5), and pre-exposed to nicotine for 13days prior to 1day IHH (Nic+1D IHH, n=7). The exposure period alternated 6min of HH (8%O2, 7%CO2, balance N2) and 6min of air over 48min, while controls were switched from air-to-air. Results showed that: 1. repeated IHH induces more changes in nAChR subunit expression than acute IHH in both the hippocampus and brainstem medulla, 2. In the hippocampus, α2 and β2 changed the most (increased) following IHH and the CA3, CA2 and DG were mostly affected. In the brainstem medulla, α2, α5, α9 and β2 were changed (decreased) in most nuclei with the hypoglossal and nucleus of the solitary tract being mostly affected. 3. Pre-exposure to nicotine enhanced the changes in the hippocampus but dampened those in the brainstem medulla. These findings indicate that the nAChRs (predominantly with the α2/β2 complex) are affected by IHH in critical hippocampal and brainstem nuclei during early brain development, and that pre-exposure to nicotine alters the pattern of susceptibility to IHH.
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Affiliation(s)
- Arunnjah Vivekanandarajah
- The BOSCH Institute, Blackburn Building, DO6, University of Sydney, NSW 2006, Australia; Department of Medicine, Blackburn Building, DO6, University of Sydney, NSW 2006, Australia
| | - Atqiya Aishah
- The BOSCH Institute, Blackburn Building, DO6, University of Sydney, NSW 2006, Australia; Discipline of Pharmacology, Blackburn Building, D06, University of Sydney, NSW 2006, Australia
| | - Karen A Waters
- The BOSCH Institute, Blackburn Building, DO6, University of Sydney, NSW 2006, Australia; Department of Medicine, Blackburn Building, DO6, University of Sydney, NSW 2006, Australia; The Children's Hospital, Westmead, Sydney, NSW 2145, Australia
| | - Rita Machaalani
- The BOSCH Institute, Blackburn Building, DO6, University of Sydney, NSW 2006, Australia; Department of Medicine, Blackburn Building, DO6, University of Sydney, NSW 2006, Australia; The Children's Hospital, Westmead, Sydney, NSW 2145, Australia.
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Kanekar S, Bogdanova OV, Olson PR, Sung YH, D'Anci KE, Renshaw PF. Hypobaric hypoxia induces depression-like behavior in female Sprague-Dawley rats, but not in males. High Alt Med Biol 2016; 16:52-60. [PMID: 25803141 DOI: 10.1089/ham.2014.1070] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Rates of depression and suicide are higher in people living at altitude, and in those with chronic hypoxic disorders like asthma, chronic obstructive pulmonary disorder (COPD), and smoking. Living at altitude exposes people to hypobaric hypoxia, which can lower rat brain serotonin levels, and impair brain bioenergetics in both humans and rats. We therefore examined the effect of hypobaric hypoxia on depression-like behavior in rats. After a week of housing at simulated altitudes of 20,000 ft, 10,000 ft, or sea level, or at local conditions of 4500 ft (Salt Lake City, UT), Sprague Dawley rats were tested for depression-like behavior in the forced swim test (FST). Time spent swimming, climbing, or immobile, and latency to immobility were measured. Female rats housed at altitude display more depression-like behavior in the FST, with significantly more immobility, less swimming, and lower latency to immobility than those at sea level. In contrast, males in all four altitude groups were similar in their FST behavior. Locomotor behavior in the open field test did not change with altitude, thus validating immobility in the FST as depression-like behavior. Hypobaric hypoxia exposure therefore induces depression-like behavior in female rats, but not in males.
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Affiliation(s)
- Shami Kanekar
- 1 The Brain Institute, University of Utah , Salt Lake City, Utah
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Hjortshøj CS, Jensen AS, Christensen JAE, Jennum P, Søndergaard L. Sleep-disordered breathing in Eisenmenger Syndrome. Int J Cardiol 2016; 214:23-4. [PMID: 27055162 DOI: 10.1016/j.ijcard.2016.03.108] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Accepted: 03/19/2016] [Indexed: 10/22/2022]
Affiliation(s)
- Cristel S Hjortshøj
- Department of Cardiology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark.
| | - Annette S Jensen
- Department of Cardiology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Julie A E Christensen
- Danish Center for Sleep Medicine, Department of Clinical Neurophysiology, Copenhagen University Hospital, Rigshospitalet Glostrup, Copenhagen, Denmark
| | - Poul Jennum
- Danish Center for Sleep Medicine, Department of Clinical Neurophysiology, Copenhagen University Hospital, Rigshospitalet Glostrup, Copenhagen, Denmark
| | - Lars Søndergaard
- Department of Cardiology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
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de Aquino-Lemos V, Santos RVT, Antunes HKM, Lira FS, Luz Bittar IG, Caris AV, Tufik S, de Mello MT. Acute physical exercise under hypoxia improves sleep, mood and reaction time. Physiol Behav 2016; 154:90-9. [DOI: 10.1016/j.physbeh.2015.10.028] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2015] [Revised: 10/15/2015] [Accepted: 10/27/2015] [Indexed: 01/20/2023]
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