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Wang H, Wang Y, Chai Y, Zhang H, Chang Q, Li J, Zhang R, Bao J. Prolonged exposure to a music-enriched environment mitigates acute noise-induced inflammation and apoptosis in the chicken spleen by modulating the Keap-1/Nrf2 and NF-κB pathways. Poult Sci 2024; 103:104100. [PMID: 39094500 PMCID: PMC11345555 DOI: 10.1016/j.psj.2024.104100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Revised: 07/06/2024] [Accepted: 07/11/2024] [Indexed: 08/04/2024] Open
Abstract
The rise of operational noise as an environmental pollutant for farm animals is an emerging concern. The mechanisms through which music can alleviate oxidative stress, inflammation, and apoptosis induced by noise exposure remain underexplored. This study aims to investigate the alleviating effects and underlying mechanisms of long-term music exposure on noise-induced damage to the chicken spleen. Male Arbor Acres (AA) broilers were divided into four groups: control (C), acute noise stimulation (NS), noise stimulation with music mitigation (NSM), and music only (M). NS and NSM groups were exposed to noise (simulating sudden intensity noise, 115 to 120dB) for 10 minutes daily for a week, starting at 14-days-old. NSM and M groups then received 28 days of 6-hour daily music (Mozart K.448, 60-65 dB). The results showed that noise stimulation significantly activated the Keap-1/Nrf2 and NF-κB signaling pathways. Long-term music intervention has also been demonstrated to successfully mitigate oxidative stress and abnormal apoptosis induced by acute noise stimulation. Microscopic examination of the spleen revealed that acute noise stimulation resulted in an increase in splenic cells, a decrease in lymphocytes, and blurred boundaries between the red and white pulps in the NS group. However, these pathological changes were alleviated in the NSM group following music intervention. Compared with the control group, the NS group exhibited significantly elevated oxidative stress parameters. In contrast, music intervention in the NSM group notably improved antioxidant capacity and partially alleviated morphological abnormalities in the spleen. Additionally, noise stimulation activated the NF-κB pathway, upregulating the downstream genes of the inflammatory factors IL-1β, IL-6, and TNF-α. Noise-induced mitochondrial damage led to apoptosis, as observed by TUNEL staining, along with increased gene and protein expression of Bcl-2, Bax, Cyt-C, Casp-3, Casp-8, and Casp-9. These findings indicate that acute noise exposure can induce splenic damage via oxidative stress, inflammation, and apoptosis by modulating the Keap-1/Nrf2 and NF-κB pathways. Prolonged music stimulation effectively mitigates noise-induced damage, offering a vital experimental foundation for further research on noise pollution's impact on organisms and music's alleviating role.
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Affiliation(s)
- Haowen Wang
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, People's Republic of China
| | - Yulai Wang
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, People's Republic of China
| | - Yiwen Chai
- College of Life Science, Northeast Agricultural University, Harbin 150030, People's Republic of China
| | - Haoran Zhang
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, People's Republic of China
| | - Qingqing Chang
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, People's Republic of China
| | - Jianhong Li
- College of Life Science, Northeast Agricultural University, Harbin 150030, People's Republic of China
| | - Runxiang Zhang
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, People's Republic of China.
| | - Jun Bao
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, People's Republic of China
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Schmitt O, Finnegan E, Trevarthen A, Wongsaengchan C, Paul ES, Mendl M, Fureix C. Exploring the similarities between risk factors triggering depression in humans and elevated in-cage "inactive but awake" behavior in laboratory mice. Front Vet Sci 2024; 11:1348928. [PMID: 38605924 PMCID: PMC11008528 DOI: 10.3389/fvets.2024.1348928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2023] [Accepted: 02/29/2024] [Indexed: 04/13/2024] Open
Abstract
Introduction Depression is a human mental disorder that can also be inferred in non-human animals. This study explored whether time spent inactive but awake ("IBA") in the home-cage in mice was further triggered by risk factors similar to those increasing vulnerability to depression in humans (early life stress, genetic predispositions, adulthood stress). Methods Eighteen DBA/2 J and 18 C57BL/6 J females were tested, of which half underwent as pups a daily maternal separation on post-natal days 2-14 (early-life stress "ELS") (other half left undisturbed). To assess the effect of the procedure, the time the dams from which the 18 subjects were born spent active in the nest (proxy for maternal behavior) was recorded on post-natal days 2, 6, 10 and 14 for 1 h before separation and following reunion (matched times for controls), using live instantaneous scan sampling (total: 96 scans/dam). For each ELS condition, about half of the pups were housed post-weaning (i.e., from 27 days old on average) in either barren (triggering IBA and depression-like symptoms) or larger, highly enriched cages (n = 4-5 per group). Time mice spent IBA post-weaning was observed blind to ELS treatment using live instantaneous scan sampling in two daily 90-min blocks, two days/week, for 6 weeks (total: 192 scans/mouse). Data were analyzed in R using generalized linear mixed models. Results The dams were significantly more active in the nest over time (p = 0.016), however with no significant difference between strains (p = 0.18), ELS conditions (p = 0.20) and before/after separation (p = 0.83). As predicted, post-weaning barren cages triggered significantly more time spent IBA in mice than enriched cages (p < 0.0001). However, neither ELS (p = 0.4) nor strain (p = 0.84) significantly influenced time mice spent IBA, with no significant interaction with environmental condition (ELS × environment: p = 0.2861; strain × environment: p = 0.5713). Discussion Our results therefore only partly support the hypothesis that greater time spent IBA in mice is triggered by risk factors for human depression. We discuss possible explanations for this and further research directions.
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Affiliation(s)
| | | | | | | | | | | | - Carole Fureix
- Bristol Veterinary School, University of Bristol, Bristol, United Kingdom
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Liu T, Li J, Li Q, Liang Y, Gao J, Meng Z, Li P, Yao M, Gu J, Tu H, Gan Y. Environmental eustress promotes liver regeneration through the sympathetic regulation of type 1 innate lymphoid cells to increase IL-22 in mice. Hepatology 2023; 78:136-149. [PMID: 36631003 DOI: 10.1097/hep.0000000000000239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Accepted: 12/02/2022] [Indexed: 01/13/2023]
Abstract
BACKGROUND AND AIMS The liver has the unique ability of regeneration, which is extremely important for restoring homeostasis after liver injury. Although clinical observations have revealed an association between psychological stress and the liver, whether stress has a causal influence on the liver regeneration remains markedly less defined. APPROACH AND RESULTS Rearing rodents in an enriched environment (EE) can induce eustress or positive psychological stress. Herein, EE-induced eustress was found to significantly enhance the ability of liver regeneration after partial hepatectomy or carbon tetrachloride-induced liver injury based on the more rapid restoration of liver/body weight ratio and the significantly increased number of proliferating hepatocytes in EE mice. Mechanistically, the cytokine array revealed that IL-22 was markedly increased in the regenerating liver in response to EE. Blockade of IL-22 signaling abrogated the enhanced liver regeneration induced by EE. Group 1 innate lymphoid cells (ILCs), including type 1 ILCs (ILC1s), have been identified as the major sources of IL-22 in the regenerating liver. EE housing led to a rapid accumulation of hepatic ILC1s after partial hepatectomy and the EE-induced enhancement of liver regeneration and elevation of IL-22 was nearly eliminated in ILC1-deficient Tbx21-/- mice. Chemical sympathectomy or blockade of β-adrenergic signaling also abolished the effect of EE on ILC1s and attenuated the enhanced liver regeneration of EE-housed mice. CONCLUSION The study findings support the brain-liver axis and suggest that environment-induced eustress promotes liver regeneration through the sympathetic nerve/ILC1/IL-22 axis.
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Affiliation(s)
- Tingting Liu
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jin Li
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Qian Li
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yiyi Liang
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jian Gao
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zihong Meng
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Peiying Li
- Department of Anesthesiology, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Ming Yao
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jinyang Gu
- Center for Liver Transplantation, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Department of Transplantation, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Hong Tu
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yu Gan
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Paton SEJ, Solano JL, Coulombe-Rozon F, Lebel M, Menard C. Barrier-environment interactions along the gut-brain axis and their influence on cognition and behaviour throughout the lifespan. J Psychiatry Neurosci 2023; 48:E190-E208. [PMID: 37253482 PMCID: PMC10234620 DOI: 10.1503/jpn.220218] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 03/01/2023] [Accepted: 03/19/2023] [Indexed: 06/01/2023] Open
Abstract
Environment is known to substantially alter mental state and behaviour across the lifespan. Biological barriers such as the blood-brain barrier (BBB) and gut barrier (GB) are major hubs for communication of environmental information. Alterations in the structural, social and motor environment at different stages of life can influence function of the BBB and GB and their integrity to exert behavioural consequences. Importantly, each of these environmental components is associated with a distinct immune profile, glucocorticoid response and gut microbiome composition, creating unique effects on the BBB and GB. These barrier-environment interactions are sensitive to change throughout life, and positive or negative alterations at critical stages of development can exert long-lasting cognitive and behavioural consequences. Furthermore, because loss of barrier integrity is implicated in pathogenesis of mental disorders, the pathways of environmental influence represent important areas for understanding these diseases. Positive environments can be protective against stress- and age-related damage, raising the possibility of novel pharmacological targets. This review summarizes known mechanisms of environmental influence - such as social interactions, structural complexity and physical exercise - on barrier composition, morphology and development, and considers the outcomes and implications of these interactions in the context of psychiatric disorders.
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Affiliation(s)
- Sam E J Paton
- From the Department of Psychiatry and Neuroscience, Faculty of Medicine and CERVO Brain Research Centre, Université Laval, Québec, Que. (Paton, Solano, Coulombe-Rozon, Lebel, Menard)
| | - José L Solano
- From the Department of Psychiatry and Neuroscience, Faculty of Medicine and CERVO Brain Research Centre, Université Laval, Québec, Que. (Paton, Solano, Coulombe-Rozon, Lebel, Menard)
| | - François Coulombe-Rozon
- From the Department of Psychiatry and Neuroscience, Faculty of Medicine and CERVO Brain Research Centre, Université Laval, Québec, Que. (Paton, Solano, Coulombe-Rozon, Lebel, Menard)
| | - Manon Lebel
- From the Department of Psychiatry and Neuroscience, Faculty of Medicine and CERVO Brain Research Centre, Université Laval, Québec, Que. (Paton, Solano, Coulombe-Rozon, Lebel, Menard)
| | - Caroline Menard
- From the Department of Psychiatry and Neuroscience, Faculty of Medicine and CERVO Brain Research Centre, Université Laval, Québec, Que. (Paton, Solano, Coulombe-Rozon, Lebel, Menard)
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Murack M, Smith KB, Traynor OH, Pirwani AF, Gostlin SK, Mohamed T, Tata DA, Messier C, Ismail N. Environmental enrichment alters LPS-induced changes in BDNF and PSD-95 expressions during puberty. Brain Res 2023; 1806:148283. [PMID: 36801452 DOI: 10.1016/j.brainres.2023.148283] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 02/09/2023] [Accepted: 02/12/2023] [Indexed: 02/21/2023]
Abstract
Puberty is a critical period of cortical reorganization and increased synaptogenesis. Healthy cortical reorganization and synaptic growth require sufficient environmental stimuli and minimalized stress exposure during pubertal development. Exposure to impoverished environments or immune challenges impact cortical reorganization and reduce the expression of proteins associated with neuronal plasticity (BDNF) and synaptogenesis (PSD-95). Environmentally enriched (EE) housing includes improved social-, physical-, and cognitive stimulation. We hypothesized that enriched housing environment would mitigate pubertal stress-induced decreases in BDNF and PSD-95 expressions. Three-week-old male and female CD-1 mice (n = 10 per group) were housed for three weeks in either EE, social or deprived housing conditions. At 6 weeks of age, mice were treated with either lipopolysaccharide (LPS) or saline eight hours prior to tissue collection. Male and female EE mice displayed greater BDNF and PSD-95 expressions in the medial prefrontal cortex and hippocampus compared to socially housed and deprived housed mice. LPS treatment decreased BDNF expression in all the brain regions examined in EE mice, except for the CA3 region of the hippocampus, where EE housing successfully mitigated the pubertal LPS-induced decrease in BDNF expression. Interestingly, LPS-treated mice housed in deprived conditions displayed unexpected increases in BDNF and PSD-95 expressions throughout the medial prefrontal cortex and hippocampus. Both enriched and deprived housing conditions moderate how an immune challenge influences BDNF and PSD-95 expressions in a region-specific manner. These findings also emphasize the vulnerability of brain plasticity during puberty to various environmental factors.
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Affiliation(s)
- Michael Murack
- NISE Laboratory, School of Psychology, University of Ottawa, 136 Jean-Jacques Lussier Ottawa, Ontario K1N 6N5, Canada
| | - Kevin B Smith
- NISE Laboratory, School of Psychology, University of Ottawa, 136 Jean-Jacques Lussier Ottawa, Ontario K1N 6N5, Canada
| | - Olivia H Traynor
- NISE Laboratory, School of Psychology, University of Ottawa, 136 Jean-Jacques Lussier Ottawa, Ontario K1N 6N5, Canada
| | - Atiqa F Pirwani
- NISE Laboratory, School of Psychology, University of Ottawa, 136 Jean-Jacques Lussier Ottawa, Ontario K1N 6N5, Canada
| | - Sarah K Gostlin
- Department of Psychology, McGill University, 2001 Av. McGill College Montreal, Quebec H3A 1G1, Canada
| | - Taha Mohamed
- NISE Laboratory, School of Psychology, University of Ottawa, 136 Jean-Jacques Lussier Ottawa, Ontario K1N 6N5, Canada
| | - Despoina A Tata
- Laboratory of Cognitive Neuroscience, School of Psychology, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Claude Messier
- NISE Laboratory, School of Psychology, University of Ottawa, 136 Jean-Jacques Lussier Ottawa, Ontario K1N 6N5, Canada; University of Ottawa Brain and Mind Research Institute, University of Ottawa, 136 Jean-Jacques Lussier Ottawa, Ontario K1N 6N5, Canada
| | - Nafissa Ismail
- NISE Laboratory, School of Psychology, University of Ottawa, 136 Jean-Jacques Lussier Ottawa, Ontario K1N 6N5, Canada; University of Ottawa Brain and Mind Research Institute, University of Ottawa, 136 Jean-Jacques Lussier Ottawa, Ontario K1N 6N5, Canada.
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Ceprian N, Garrido A, De la Fuente M. [Improved immunity and mean lifespan in mature mice genetically deficient in catecholamine synthesis after living with wild type for two months]. Rev Esp Geriatr Gerontol 2023; 58:15-21. [PMID: 36526466 DOI: 10.1016/j.regg.2022.11.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 11/10/2022] [Accepted: 11/20/2022] [Indexed: 12/23/2022]
Abstract
INTRODUCTION Mice hemizygous in tyrosine hydroxylase (TH-HZ), the limiting enzyme in catecholamine synthesis, show premature immunosenescence, which in females is associated with a shorter lifespan than the corresponding controls (WT). The coexistence of TH-Hz with WT improves the immune function in both males and females in adulthood. OBJECTIVE To test whether cohabitation for two months of mature male TH-HZ with WT improves the immune function of the former and whether this impacts the lifespan. MATERIAL AND METHODS Mature male ICR-CD1 mice (13 ± 1 months) TH-HZ coexisted with WT (2:4 ratio in each cage) for two months. Peritoneal leukocytes were extracted from all animals at baseline, one month, and two months after cohabitation, and macrophage phagocytic capacity, macrophage and lymphocyte chemotaxis, natural killer (NK) antitumor activity, and lymphoproliferative capacity in response to the mitogens concanavalin A and lipopolysaccharide (LPS) were assessed. The animals were maintained under these conditions until their natural death. RESULTS The TH-HZ, which start, in general, with lower values than the WT in the immune functions studied, improved them after two months of cohabitation, becoming similar to those of the controls. This improvement was already observed in NK activity after one month of cohabitation. The TH-HZ presented lower mean longevity than WT, but when they cohabited with WT, it was similar to the latter. CONCLUSION The coexistence of TH-HZ male mice with WT mice for two months at mature age improves these genetically modified animals' immune response and longevity.
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Affiliation(s)
- Noemi Ceprian
- Departamento de Genética, Fisiología y Microbiología (Unidad de Fisiología Animal), Facultad de Ciencias Biológicas, Universidad Complutense de Madrid (UCM), Madrid, España; Instituto de Investigación del Hospital 12 de Octubre (i + 12), Madrid, España
| | - Antonio Garrido
- Departamento de Inmunología y Oncología, Centro Nacional de Biotecnología (CNB), Centro Superior de Investigaciones Científicas (CSIC), Madrid, España
| | - Mónica De la Fuente
- Departamento de Genética, Fisiología y Microbiología (Unidad de Fisiología Animal), Facultad de Ciencias Biológicas, Universidad Complutense de Madrid (UCM), Madrid, España; Instituto de Investigación del Hospital 12 de Octubre (i + 12), Madrid, España.
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Jadmiko AW, Kristina TN, Sujianto U, Prajoko YW, Dwiantoro L, Widodo AP. A Quasi-experimental of a Virtual Reality Content Intervention for Level of Comfort of Indonesian Cancer Patients. Comput Inform Nurs 2022; 40:841-847. [PMID: 35970769 DOI: 10.1097/cin.0000000000000953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
This study aims to determine the effect of virtual reality content on the comfort level of cancer patients. This study used a quasi-experimental non-equivalent control group design and was conducted on 60 cancer patients. The intervention uses the virtual reality content "My Comfortable Environment," which was developed based on Kolcaba's comfort theory. Comfort level was measured using the Shortened General Comfort Questionnaire. The Wilcoxon and Mann-Whitney U tests were used to determine the differences before and after the intervention within the group and between the study groups. There was a significant mean difference between pre-test and post-test in the intervention group with P < .000, Z = -4.785, and in the control group with P < .041, Z = -2.032. These results indicate that interventions with virtual reality content and guided imagery both affect the comfort level of cancer patients. However, if the test was conducted between groups, there was a significant difference between the intervention group and the control group with a P value of <.000. These results indicate that the virtual reality content intervention can significantly increase the level of patient comfort through modifying various aspects of patient comfort, especially environmental aspects.
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Affiliation(s)
- Arief Wahyudi Jadmiko
- Author Affiliations: Faculty of Medicine (Mr Jadmiko, Prof Kristina, Dr Sujianto, Dr Prajoko, Dr Dwiantoro) and Faculty of Science and Mathematics (Dr Widodo), Diponegoro University, Semarang; and Nursing Department, Faculty of Health, Universitas Pembangunan Nasional Veteran (Mr Jadmiko), Jakarta, Indonesia
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de Sousa Fernandes MS, Santos GCJ, Filgueira TO, Gomes DA, Barbosa EAS, dos Santos TM, Câmara NOS, Castoldi A, Souto FO. Cytokines and Immune Cells Profile in Different Tissues of Rodents Induced by Environmental Enrichment: Systematic Review. Int J Mol Sci 2022; 23:ijms231911986. [PMID: 36233282 PMCID: PMC9570198 DOI: 10.3390/ijms231911986] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 09/22/2022] [Accepted: 09/26/2022] [Indexed: 11/29/2022] Open
Abstract
Environmental Enrichment (EE) is based on the promotion of socio-environmental stimuli, which mimic favorable environmental conditions for the practice of physical activity and health. The objective of the present systematic review was to evaluate the influence of EE on pro-and anti-inflammatory immune parameters, but also in cell activation related to the innate and acquired immune responses in the brain and peripheral tissues in rodents. Three databases [PubMed (2209 articles), Scopus (1154 articles), and Science Direct (1040 articles)] were researched. After applying the eligibility criteria, articles were selected for peer review, independently, as they were identified by September 2021. The protocol for this systematic review was registered in the PROSPERO. Of the 4417 articles found, 16 were selected for this systematic review. In the brain, EE promoted a reduction in proinflammatory cytokines and chemokines. In the blood, EE promoted a higher percentage of leukocytes, an increase in CD19+ B lymphocytes, and the proliferation of Natura Killer (NK cells). In the bone marrow, there was an increase in the number of CD27- and CD11b+ mature NK cells and a reduction in CD27- and CD11b+ immature Natural Killer cells. In conclusion, EE can be an immune modulation approach and plays a key role in the prevention of numerous chronic diseases, including cancer, that have a pro-inflammatory response and immunosuppressive condition as part of their pathophysiology.
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Affiliation(s)
- Matheus Santos de Sousa Fernandes
- Programa de Pós-Graduação em Neuropsiquiatria e Ciências do Comportamento, Centro de Ciências da Médicas, Universidade Federal de Pernambuco, Recife 50740-600, Brazil
- Faculdade de Comunicação Turismo e Tecnologia de Olinda, Olinda 53030-010, Brazil
| | | | - Tayrine Ordonio Filgueira
- Instituto Keizo Asami, Universidade Federal de Pernambuco, Recife 50740-600, Brazil
- Programa de Pós-Graduação em Biologia Aplicada à Saúde, Centro de Biociências, Universidade Federal de Pernambuco, Recife 50740-600, Brazil
| | - Dayane Aparecida Gomes
- Programa de Pós-Graduação em Neuropsiquiatria e Ciências do Comportamento, Centro de Ciências da Médicas, Universidade Federal de Pernambuco, Recife 50740-600, Brazil
| | | | - Tony Meireles dos Santos
- Programa de Pós-Graduação em Neuropsiquiatria e Ciências do Comportamento, Centro de Ciências da Médicas, Universidade Federal de Pernambuco, Recife 50740-600, Brazil
- Departamento de Educação Física, Universidade Federal de Pernambuco, Recife 50740-600, Brazil
| | - Niels Olsen Saraiva Câmara
- Department of Immunology, Institute of Biomedical Sciences, University of São Paulo, São Paulo 05508-000, Brazil
| | - Angela Castoldi
- Instituto Keizo Asami, Universidade Federal de Pernambuco, Recife 50740-600, Brazil
- Programa de Pós-Graduação em Biologia Aplicada à Saúde, Centro de Biociências, Universidade Federal de Pernambuco, Recife 50740-600, Brazil
- Núcleo de Ciências da Vida-NCV, Centro Acadêmico do Agreste—CAA, Universidade Federal de Pernambuco, Caruaru 55014-900, Brazil
| | - Fabricio Oliveira Souto
- Instituto Keizo Asami, Universidade Federal de Pernambuco, Recife 50740-600, Brazil
- Programa de Pós-Graduação em Biologia Aplicada à Saúde, Centro de Biociências, Universidade Federal de Pernambuco, Recife 50740-600, Brazil
- Núcleo de Ciências da Vida-NCV, Centro Acadêmico do Agreste—CAA, Universidade Federal de Pernambuco, Caruaru 55014-900, Brazil
- Correspondence:
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Düpjan S, Dawkins MS. Animal Welfare and Resistance to Disease: Interaction of Affective States and the Immune System. Front Vet Sci 2022; 9:929805. [PMID: 35774975 PMCID: PMC9237619 DOI: 10.3389/fvets.2022.929805] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Accepted: 05/16/2022] [Indexed: 11/29/2022] Open
Abstract
Good management and improved standards of animal welfare are discussed as important ways of reducing the risk of infection in farm animals without medication. Increasing evidence from both humans and animals suggests that environments that promote wellbeing over stress and positive over negative emotions can reduce susceptibility to disease and/or lead to milder symptoms. We point out, however, that the relationship between welfare, immunity, and disease is highly complex and we caution against claiming more than the current evidence shows. The accumulating but sometimes equivocal evidence of close links between the brain, the gut microbiome, immunity, and welfare are discussed in the context of the known links between mental and physical health in humans. This evidence not only provides empirical support for the importance of good welfare as preventative medicine in animals but also indicates a variety of mechanisms by which good welfare can directly influence disease resistance. Finally, we outline what still needs to be done to explore the potential preventative effects of good welfare.
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Affiliation(s)
- Sandra Düpjan
- Institute of Behavioural Physiology, Research Institute for Farm Animal Biology (FBN), Dummerstorf, Germany
| | - Marian Stamp Dawkins
- Department of Zoology, University of Oxford, Oxford, United Kingdom
- *Correspondence: Marian Stamp Dawkins
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Hamilton A, Rizzo R, Brod S, Ono M, Perretti M, Cooper D, D'Acquisto F. The immunomodulatory effects of social isolation in mice are linked to temperature control. Brain Behav Immun 2022; 102:179-194. [PMID: 35217174 DOI: 10.1016/j.bbi.2022.02.022] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 01/17/2022] [Accepted: 02/18/2022] [Indexed: 12/25/2022] Open
Abstract
Living in isolation is considered an emerging societal problem that negatively affects the physical wellbeing of its sufferers in ways that we are just starting to appreciate. This study investigates the immunomodulatory effects of social isolation in mice, utilising a two-week program of sole cage occupancy followed by the testing of immune-inflammatory resilience to bacterial sepsis. Our results revealed that mice housed in social isolation showed an increased ability to clear bacterial infection compared to control socially housed animals. These effects were associated with specific changes in whole blood gene expression profile and an increased production of classical pro-inflammatory cytokines. Interestingly, equipping socially isolated mice with artificial nests as a substitute for their natural huddling behaviour reversed the increased resistance to bacterial sepsis. Together these results suggest that the control of body temperature through social housing and huddling behaviour are important factors in the regulation of the host immune response to infection in mice and might provide another example of the many ways by which living conditions influence immunity.
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Affiliation(s)
- Alice Hamilton
- William Harvey Research Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Raffaella Rizzo
- William Harvey Research Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Samuel Brod
- William Harvey Research Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Masahiro Ono
- University of London Imperial College Science Technology & Medicine, Department of Life Science, Faculty of Natural Science, London SW7 2AZ, England
| | - Mauro Perretti
- William Harvey Research Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Dianne Cooper
- William Harvey Research Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Fulvio D'Acquisto
- William Harvey Research Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK; School of Life and Health Science, University of Roehampton, London SW15, 4JD, UK.
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11
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Bai PY, Chen SQ, Jia DL, Pan LH, Liu CB, Liu J, Luo W, Yang Y, Sun MY, Wan NF, Rong WW, Sun AJ, Ge JB. Environmental eustress improves postinfarction cardiac repair via enhancing cardiac macrophage survival. SCIENCE ADVANCES 2022; 8:eabm3436. [PMID: 35476440 PMCID: PMC9045726 DOI: 10.1126/sciadv.abm3436] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Accepted: 03/10/2022] [Indexed: 05/24/2023]
Abstract
Macrophages play a vital role in cardiac repair following myocardial infarction (MI). An enriched environment (EE) is involved in the regulation of macrophage-related activities and disease progression; however, whether EE affects the phenotype and function of macrophages to improve postinfarction cardiac repair remains unknown. In this study, we found that EE improved cardiac function, decreased mortality, and ameliorated adverse ventricular remodeling in mice after MI, with these outcomes closely related to the increased survival of Ly6Clow macrophages and their CCR2-MHCIIlow subsets. EE increased the expression of brain-derived neurotrophic factor (BDNF) in the hypothalamus, leading to higher circulating levels of BDNF, which, in turn, regulated the cardiac macrophages. BDNF bound to tropomyosin receptor kinase B to activate downstream ERK1/2 and AKT pathways, promoting macrophage survival. These findings demonstrate that EE optimizes postinfarction cardiac repair and highlights the significance of EE as a previously unidentified strategy for impeding adverse ventricular remodeling.
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Affiliation(s)
- Pei-Yuan Bai
- Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai Institute of Cardiovascular Diseases, Shanghai, China
- Key Laboratory of Viral Heart Diseases, National Health Commission, Shanghai, China
- Key Laboratory of Viral Heart Diseases, Chinese Academy of Medical Sciences, Shanghai, China
| | - Si-Qin Chen
- Key Laboratory of Viral Heart Diseases, National Health Commission, Shanghai, China
- Key Laboratory of Viral Heart Diseases, Chinese Academy of Medical Sciences, Shanghai, China
- Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Dai-Le Jia
- Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai Institute of Cardiovascular Diseases, Shanghai, China
- Key Laboratory of Viral Heart Diseases, National Health Commission, Shanghai, China
- Key Laboratory of Viral Heart Diseases, Chinese Academy of Medical Sciences, Shanghai, China
| | - Li-Hong Pan
- Key Laboratory of Viral Heart Diseases, National Health Commission, Shanghai, China
- Key Laboratory of Viral Heart Diseases, Chinese Academy of Medical Sciences, Shanghai, China
- Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Chao-Bao Liu
- School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Jin Liu
- Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai Institute of Cardiovascular Diseases, Shanghai, China
- Key Laboratory of Viral Heart Diseases, National Health Commission, Shanghai, China
- Key Laboratory of Viral Heart Diseases, Chinese Academy of Medical Sciences, Shanghai, China
| | - Wei Luo
- Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai Institute of Cardiovascular Diseases, Shanghai, China
- Key Laboratory of Viral Heart Diseases, National Health Commission, Shanghai, China
- Key Laboratory of Viral Heart Diseases, Chinese Academy of Medical Sciences, Shanghai, China
| | - Yang Yang
- State Key Laboratory of Oncogenes and Related Genes, Center for Single-Cell Omics, School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ma-Yu Sun
- State Key Laboratory of Oncogenes and Related Genes, Center for Single-Cell Omics, School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Nai-Fu Wan
- Department of Cardiology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Wu-Wei Rong
- Department of Cardiology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Ai-Jun Sun
- Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai Institute of Cardiovascular Diseases, Shanghai, China
- Key Laboratory of Viral Heart Diseases, National Health Commission, Shanghai, China
- Key Laboratory of Viral Heart Diseases, Chinese Academy of Medical Sciences, Shanghai, China
- Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Jun-Bo Ge
- Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai Institute of Cardiovascular Diseases, Shanghai, China
- Key Laboratory of Viral Heart Diseases, National Health Commission, Shanghai, China
- Key Laboratory of Viral Heart Diseases, Chinese Academy of Medical Sciences, Shanghai, China
- Institutes of Biomedical Sciences, Fudan University, Shanghai, China
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12
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Ratuski AS, Weary DM. Environmental Enrichment for Rats and Mice Housed in Laboratories: A Metareview. Animals (Basel) 2022; 12:ani12040414. [PMID: 35203123 PMCID: PMC8868396 DOI: 10.3390/ani12040414] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 01/28/2022] [Accepted: 01/30/2022] [Indexed: 11/10/2022] Open
Abstract
Simple Summary Environmental enrichment has been widely studied with laboratory rodents, but there is no consensus regarding what counts as enrichment or what it should achieve. Inconsistent use of the term “enrichment” creates challenges in drawing conclusions about the quality of an environment. We conducted a metareview to better understand the definitions and goals of enrichment, perceived risks or requirements of enrichment, and what forms of enrichment have previously been endorsed for use with rodents housed in laboratories. This may help researchers and animal care staff to better define their chosen approach and intended outcomes when providing environmental enrichment. Abstract Environmental enrichment has been widely studied in rodents, but there is no consensus on what enrichment should look like or what it should achieve. Inconsistent use of the term “enrichment” creates challenges in drawing conclusions about the quality of an environment, which may slow housing improvements for laboratory animals. Many review articles have addressed environmental enrichment for laboratory rats and mice (Rattus norvegicus and Mus musculus). We conducted a metareview of 29 review articles to assess how enrichment has been defined and what are commonly described as its goals or requirements. Recommendations from each article were summarised to illustrate the conditions generally considered suitable for laboratory rodents. While there is no consensus on alternative terminology, many articles acknowledged that the blanket use of the terms “enriched” and “enrichment” should be avoided. Environmental enrichment was most often conceptualised as a method to increase natural behaviour and improve animal welfare. Authors also commonly outlined perceived risks and requirements of environmental enrichment. We discuss these perceptions, make suggestions for future research, and advocate for the adoption of more specific and value-neutral terminology.
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Cait J, Cait A, Scott RW, Winder CB, Mason GJ. Conventional laboratory housing increases morbidity and mortality in research rodents: results of a meta-analysis. BMC Biol 2022; 20:15. [PMID: 35022024 PMCID: PMC8756709 DOI: 10.1186/s12915-021-01184-0] [Citation(s) in RCA: 37] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Accepted: 11/07/2021] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Over 120 million mice and rats are used annually in research, conventionally housed in shoebox-sized cages that restrict natural behaviours (e.g. nesting and burrowing). This can reduce physical fitness, impair thermoregulation and reduce welfare (e.g. inducing abnormal stereotypic behaviours). In humans, chronic stress has biological costs, increasing disease risks and potentially shortening life. Using a pre-registered protocol ( https://atrium.lib.uoguelph.ca/xmlui/handle/10214/17955 ), this meta-analysis therefore tested the hypothesis that, compared to rodents in 'enriched' housing that better meets their needs, conventional housing increases stress-related morbidity and all-cause mortality. RESULTS Comprehensive searches (via Ovid, CABI, Web of Science, Proquest and SCOPUS on May 24 2020) yielded 10,094 publications. Screening for inclusion criteria (published in English, using mice or rats and providing 'enrichments' in long-term housing) yielded 214 studies (within 165 articles, using 6495 animals: 59.1% mice; 68.2% male; 31.8% isolation-housed), and data on all-cause mortality plus five experimentally induced stress-sensitive diseases: anxiety, cancer, cardiovascular disease, depression and stroke. The Systematic Review Center for Laboratory animal Experimentation (SYRCLE) tool assessed individual studies' risks of bias. Random-effects meta-analyses supported the hypothesis: conventional housing significantly exacerbated disease severity with medium to large effect sizes: cancer (SMD = 0.71, 95% CI = 0.54-0.88); cardiovascular disease (SMD = 0.72, 95% CI = 0.35-1.09); stroke (SMD = 0.87, 95% CI = 0.59-1.15); signs of anxiety (SMD = 0.91, 95% CI = 0.56-1.25); signs of depression (SMD = 1.24, 95% CI = 0.98-1.49). It also increased mortality rates (hazard ratio = 1.48, 95% CI = 1.25-1.74; relative median survival = 0.91, 95% CI = 0.89-0.94). Meta-regressions indicated that such housing effects were ubiquitous across species and sexes, but could not identify the most impactful improvements to conventional housing. Data variability (assessed via coefficient of variation) was also not increased by 'enriched' housing. CONCLUSIONS Conventional housing appears sufficiently distressing to compromise rodent health, raising ethical concerns. Results also add to previous work to show that research rodents are typically CRAMPED (cold, rotund, abnormal, male-biased, poorly surviving, enclosed and distressed), raising questions about the validity and generalisability of the data they generate. This research was funded by NSERC, Canada.
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Affiliation(s)
- Jessica Cait
- Department of Integrative Biology, College of Biological Science, University of Guelph, Guelph, Ontario, Canada
| | - Alissa Cait
- Department of Translational Immunology, Malaghan Institute of Medical Research, Wellington, New Zealand
| | - R Wilder Scott
- School of Biomedical Engineering, Faculty of Medicine and Applied Science, University of British Columbia, Vancouver, British Columbia, Canada
| | - Charlotte B Winder
- Department of Population Medicine, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
| | - Georgia J Mason
- Department of Integrative Biology, College of Biological Science, University of Guelph, Guelph, Ontario, Canada.
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14
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Estrázulas M, Freitas RDS, Käfer ET, Dagnino APA, Campos MM. Central and peripheral effects of environmental enrichment in a mouse model of arthritis. Int Immunopharmacol 2022; 102:108386. [PMID: 34824037 DOI: 10.1016/j.intimp.2021.108386] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 11/14/2021] [Accepted: 11/17/2021] [Indexed: 01/07/2023]
Abstract
This study analyzed whether environmental enrichment (EE) modulates the nociceptive and inflammatory responses in the mouse model of arthritis induced by Complete Freund's Adjuvant (CFA). Ninety male mice (C57BL/6-JUnib, 4-weeks-old; 20-25 g) were distributed into EE and standard (SE) groups. For EE, mice were kept in bigger cages using an alternation of materials to chew (wood and paper), for nesting (cotton), to use as hiding places (plastic tunnels), and for voluntary exercise (wheel running). Arthritis was induced by an injection of CFA (50 μL) into the right hind paw or saline solution in the control group. Separate groups received the anti-inflammatory drug dexamethasone (0.5 mg/kg; every 48 h). Inflammatory and pain measurements were performed from 1 to 35 days after CFA administration. EE per se reduced the acute paw edema formation and arthritis scores. The serum levels of tumor necrosis factor (TNF) were undetectable in any experimental groups. EE diminished the immunopositivity for the microglia marker IBA1 in the pre-frontal cortex, with slight changes for hippocampal GFAP-positive activated astrocytes. Finally, EE induced a marked increment of brain-derived nerve factor (BDNF) expression in the hippocampus, an effect that was fully prevented by dexamethasone. These data bring novel evidence on the peripheral and central effects of EE in a mouse arthritis model.
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Affiliation(s)
- Marina Estrázulas
- Programa de Pós-graduação em Medicina e Ciências da Saúde, Escola de Medicina, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil; Centro de Pesquisas em Toxicologia e Farmacologia, Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Raquel D S Freitas
- Programa de Pós-graduação em Medicina e Ciências da Saúde, Escola de Medicina, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil; Centro de Pesquisas em Toxicologia e Farmacologia, Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Eduarda T Käfer
- Curso de Graduação em Medicina, Escola de Medicina, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Ana P A Dagnino
- Programa de Pós-graduação em Medicina e Ciências da Saúde, Escola de Medicina, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil; Centro de Pesquisas em Toxicologia e Farmacologia, Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Maria M Campos
- Programa de Pós-graduação em Medicina e Ciências da Saúde, Escola de Medicina, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil; Centro de Pesquisas em Toxicologia e Farmacologia, Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil; Programa de Pós-graduação em Odontologia, Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil.
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15
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Fureix C, Trevarthen AC, Finnegan EM, Bučková K, Paul ES, Mendl MT. Do greater levels of in-cage waking inactivity in laboratory mice reflect a spontaneous depression-like symptom? A pharmacological investigation. Pharmacol Biochem Behav 2021; 212:173311. [PMID: 34863797 DOI: 10.1016/j.pbb.2021.173311] [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: 08/18/2021] [Revised: 11/16/2021] [Accepted: 11/26/2021] [Indexed: 10/19/2022]
Abstract
We previously identified in laboratory mice an inactive state [being awake with eyes open motionless within the home cage; inactive but awake, 'IBA'] sharing etiological factors and symptoms with human clinical depression. We further test the hypothesis that greater time spent displaying IBA indicates a depression-like state in mice by investigating whether the antidepressant Venlafaxine, environmental enrichment, and their combination, alleviate IBA. Seventy-two C57BL/6J and 72 DBA/2J female mice were pseudo-randomly housed post-weaning in mixed strain-pairs in non-enriched (NE; 48 pairs) or in environmentally enriched (EE; 24 pairs) cages. After 34 days, half of the mice housed in NE cages were either relocated to EE cages or left in NE cages. For each of these conditions, half of the mice drank either a placebo or the antidepressant Venlafaxine (10 mg/kg). The 48 mice housed in EE cages were all relocated to NE cages and allocated to either the placebo (n = 24) or Venlafaxine (n = 24). IBA data were collected prior to and after environmental adjustment by trained observers blind to the pharmacological and environmental adjustment treatments. Data were analyzed using GLM models. NE cages triggered more IBA than EE cages (Likelihood-Ratio-Test Chi23 = 53.501, p < 0.0001). Venlafaxine and environmental enrichment appeared equally effective at reducing IBA (LRT Chi23 = 18.262, p < 0.001), and combining these approaches did not magnify their effects. Enrichment removal triggered IBA increase (LRT Chi21 = 23.050, p < 0.001), but Venlafaxine did not overcome the increase in IBA resulting from enrichment loss (LTR Chi21 = 0.081, p = 0.775). Theoretical implications for putative depression-like states in mice, and further research directions, are discussed.
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Affiliation(s)
- Carole Fureix
- University of Bristol, Bristol Veterinary School, Langford House, Langford BS40 5DU, United Kingdom.
| | - Anna C Trevarthen
- University of Bristol, Bristol Veterinary School, Langford House, Langford BS40 5DU, United Kingdom.
| | - Emily M Finnegan
- University of Bristol, Bristol Veterinary School, Langford House, Langford BS40 5DU, United Kingdom.
| | - Katarína Bučková
- University of Bristol, Bristol Veterinary School, Langford House, Langford BS40 5DU, United Kingdom
| | - Elizabeth S Paul
- University of Bristol, Bristol Veterinary School, Langford House, Langford BS40 5DU, United Kingdom.
| | - Michael T Mendl
- University of Bristol, Bristol Veterinary School, Langford House, Langford BS40 5DU, United Kingdom.
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16
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Sakama S, Kurusu K, Morita M, Oizumi T, Masugata S, Oka S, Yokomizo S, Nishimura M, Morioka T, Kakinuma S, Shimada Y, Nakamura AJ. An Enriched Environment Alters DNA Repair and Inflammatory Responses After Radiation Exposure. Front Immunol 2021; 12:760322. [PMID: 34745135 PMCID: PMC8570081 DOI: 10.3389/fimmu.2021.760322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Accepted: 10/08/2021] [Indexed: 11/22/2022] Open
Abstract
After the Fukushima Daiichi Nuclear Power Plant accident, there is growing concern about radiation-induced carcinogenesis. In addition, living in a long-term shelter or temporary housing due to disasters might cause unpleasant stress, which adversely affects physical and mental health. It's been experimentally demonstrated that "eustress", which is rich and comfortable, has beneficial effects for health using mouse models. In a previous study, mice raised in the enriched environment (EE) has shown effects such as suppression of tumor growth and enhancement of drug sensitivity during cancer treatment. However, it's not yet been evaluated whether EE affects radiation-induced carcinogenesis. Therefore, to evaluate whether EE suppresses a radiation-induced carcinogenesis after radiation exposure, in this study, we assessed the serum leptin levels, radiation-induced DNA damage response and inflammatory response using the mouse model. In brief, serum and tissues were collected and analyzed over time in irradiated mice after manipulating the raising environment during the juvenile or adult stage. To assess the radiation-induced DNA damage response, we performed immunostaining for phosphorylated H2AX which is a marker of DNA double-strand break. Focusing on the polarization of macrophages in the inflammatory reaction that has an important role in carcinogenesis, we performed analysis using tissue immunofluorescence staining and RT-qPCR. Our data confirmed that EE breeding before radiation exposure improved the responsiveness to radiation-induced DNA damage and basal immunity, further suppressing the chronic inflammatory response, and that might lead to a reduction of the risk of radiation-induced carcinogenesis.
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Affiliation(s)
- Sae Sakama
- Department of Biological Science, College of Sciences, Ibaraki University, Mito, Japan
| | - Keisuke Kurusu
- Department of Biological Science, College of Sciences, Ibaraki University, Mito, Japan
| | - Mayu Morita
- Department of Biological Science, College of Sciences, Ibaraki University, Mito, Japan
| | - Takashi Oizumi
- Department of Biological Science, College of Sciences, Ibaraki University, Mito, Japan
| | - Shinya Masugata
- Department of Biological Science, College of Sciences, Ibaraki University, Mito, Japan
| | - Shohei Oka
- Department of Biological Science, College of Sciences, Ibaraki University, Mito, Japan
| | - Shinya Yokomizo
- Department of Radiation Effects Research, National Institute of Radiological Sciences (NIRS), National Institutes for Quantum and Radiological Science and Technology (QST), Chiba, Japan
| | - Mayumi Nishimura
- Department of Radiation Effects Research, National Institute of Radiological Sciences (NIRS), National Institutes for Quantum and Radiological Science and Technology (QST), Chiba, Japan
| | - Takamitsu Morioka
- Department of Radiation Effects Research, National Institute of Radiological Sciences (NIRS), National Institutes for Quantum and Radiological Science and Technology (QST), Chiba, Japan
| | - Shizuko Kakinuma
- Department of Radiation Effects Research, National Institute of Radiological Sciences (NIRS), National Institutes for Quantum and Radiological Science and Technology (QST), Chiba, Japan
| | - Yoshiya Shimada
- Executive Director, National Institutes for Quantum and Radiological Science and Technology (QST), Chiba, Japan
| | - Asako J. Nakamura
- Department of Biological Science, College of Sciences, Ibaraki University, Mito, Japan
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17
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Liu C, Yang Y, Chen C, Li L, Li J, Wang X, Chu Q, Qiu L, Ba Q, Li X, Wang H. Environmental eustress modulates β-ARs/CCL2 axis to induce anti-tumor immunity and sensitize immunotherapy against liver cancer in mice. Nat Commun 2021; 12:5725. [PMID: 34593796 PMCID: PMC8484272 DOI: 10.1038/s41467-021-25967-9] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Accepted: 09/01/2021] [Indexed: 01/22/2023] Open
Abstract
Although psycho-social stress is a well-known factor that contributes to the development of cancer, it remains largely unclear whether and how environmental eustress influences malignant diseases and regulates cancer-related therapeutic responses. Using an established eustress model, we demonstrate that mice living in an enriched environment (EE) are protected from carcinogen-induced liver neoplasia and transplantable syngeneic liver tumors, owning to a CD8+ T cell-dependent tumor control. We identify a peripheral Neuro-Endocrine-Immune pathway in eustress, including Sympathetic nervous system (SNS)/β-adrenergic receptors (β-ARs)/CCL2 that relieves tumor immunosuppression and overcomes PD-L1 resistance to immunotherapy. Notably, EE activates peripheral SNS and β-ARs signaling in tumor cells and tumor infiltrated myeloid cells, leading to suppression of CCL2 expression and activation of anti-tumor immunity. Either blockade of CCL2/CCR2 or β-AR signaling in EE mice lose the tumor protection capability. Our study reveales that environmental eustress via EE stimulates anti-tumor immunity, resulting in more efficient tumor control and a better outcome of immunotherapy.
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Affiliation(s)
- Chaobao Liu
- State Key Laboratory of Oncogenes and Related Genes, Center for Single-Cell Omics, School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China.,School of Basic Medical Sciences, Fudan University, Shanghai, 200032, China
| | - Yang Yang
- State Key Laboratory of Oncogenes and Related Genes, Center for Single-Cell Omics, School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Cheng Chen
- State Key Laboratory of Oncogenes and Related Genes, Center for Single-Cell Omics, School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Ling Li
- State Key Laboratory of Oncogenes and Related Genes, Center for Single-Cell Omics, School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Jingquan Li
- State Key Laboratory of Oncogenes and Related Genes, Center for Single-Cell Omics, School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Xiaonan Wang
- State Key Laboratory of Oncogenes and Related Genes, Center for Single-Cell Omics, School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Qiao Chu
- State Key Laboratory of Oncogenes and Related Genes, Center for Single-Cell Omics, School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Lin Qiu
- CAS Key Laboratory of Nutrition, Metabolism and Food safety, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Qian Ba
- State Key Laboratory of Oncogenes and Related Genes, Center for Single-Cell Omics, School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Xiaoguang Li
- State Key Laboratory of Oncogenes and Related Genes, Center for Single-Cell Omics, School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China.
| | - Hui Wang
- State Key Laboratory of Oncogenes and Related Genes, Center for Single-Cell Omics, School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China. .,CAS Key Laboratory of Nutrition, Metabolism and Food safety, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China.
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18
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Xiao R, Ali S, Caligiuri MA, Cao L. Enhancing Effects of Environmental Enrichment on the Functions of Natural Killer Cells in Mice. Front Immunol 2021; 12:695859. [PMID: 34394087 PMCID: PMC8355812 DOI: 10.3389/fimmu.2021.695859] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Accepted: 07/14/2021] [Indexed: 01/02/2023] Open
Abstract
The environment of an organism can convey a powerful influence over its biology. Environmental enrichment (EE), as a eustress model, has been used extensively in neuroscience to study neurogenesis and brain plasticity. EE has also been used as an intervention for the treatment and prevention of neurological and psychiatric disorders with limited clinical application. By contrast, the effects of EE on the immune system are relatively less investigated. Recently, accumulating evidence has demonstrated that EE can robustly impact immune function. In this review, we summarize the major components of EE, the impact of EE on natural killer (NK) cells, EE's immunoprotective roles in cancer, and the underlying mechanisms of EE-induced NK cell regulation. Moreover, we discuss opportunities for translational application based on insights from animal research of EE-induced NK cell regulation.
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Affiliation(s)
- Run Xiao
- Department of Cancer Biology and Genetics, College of Medicine, The Ohio State University, Columbus, OH, United States
- The Ohio State University Comprehensive Cancer Center, The James Cancer Hospital and Solove Research Institute, Columbus, OH, United States
| | - Seemaab Ali
- Department of Cancer Biology and Genetics, College of Medicine, The Ohio State University, Columbus, OH, United States
- The Ohio State University Comprehensive Cancer Center, The James Cancer Hospital and Solove Research Institute, Columbus, OH, United States
- Medical Scientist Training Program, The Ohio State University, Columbus, OH, United States
| | - Michael A. Caligiuri
- Department of Hematology & Hematopoietic Cell Transplantation, City of Hope National Medical Center and the Beckman Research Institute, Los Angeles, CA, United States
| | - Lei Cao
- Department of Cancer Biology and Genetics, College of Medicine, The Ohio State University, Columbus, OH, United States
- The Ohio State University Comprehensive Cancer Center, The James Cancer Hospital and Solove Research Institute, Columbus, OH, United States
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19
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Enriched environment restores passive avoidance memory impairment in a rat model of neuroinflammation. PHYSIOLOGY AND PHARMACOLOGY 2021. [DOI: 10.52547/phypha.26.3.4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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20
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Kimura LF, Novaes LS, Picolo G, Munhoz CD, Cheung CW, Camarini R. How environmental enrichment balances out neuroinflammation in chronic pain and comorbid depression and anxiety disorders. Br J Pharmacol 2021; 179:1640-1660. [PMID: 34076891 DOI: 10.1111/bph.15584] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Revised: 04/05/2021] [Accepted: 05/17/2021] [Indexed: 11/30/2022] Open
Abstract
Depression and anxiety commonly occur in chronic pain states and the coexistence of these diseases worsens outcomes for both disorders and may reduce treatment adherence and response. Despite the advances in the knowledge of chronic pain mechanisms, pharmacological treatment is still unsatisfactory. Research based on exposure to environmental enrichment is currently under investigation and seems to offer a promising low-cost strategy with no side effects. In this review, we discuss the role of inflammation as a major biological substrate and aetiological factor of chronic pain and depression/anxiety and report a collection of preclinical evidence of the effects and mechanisms of environmental enrichment. As microglia participates in the development of both conditions, we also discuss microglia as a potential target underlying the beneficial actions of environmental enrichment in chronic pain and comorbid depression/anxiety. We also discuss how alternative interventions under clinical guidelines, such as environmental enrichment, may improve treatment compliance and patient outcomes.
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Affiliation(s)
- Louise F Kimura
- Laboratory of Pain and Signaling, Butantan Institute, São Paulo, Brazil
| | - Leonardo S Novaes
- Department of Pharmacology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Gisele Picolo
- Laboratory of Pain and Signaling, Butantan Institute, São Paulo, Brazil
| | - Carolina D Munhoz
- Department of Pharmacology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Chi W Cheung
- Department of Anesthesiology, University of Hong Kong, Hong Kong
| | - Rosana Camarini
- Department of Pharmacology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
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21
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Schander JA, Marvaldi C, Correa F, Wolfson ML, Cella M, Aisemberg J, Jensen F, Franchi AM. Maternal environmental enrichment modulates the immune response against an inflammatory challenge during gestation and protects the offspring. J Reprod Immunol 2021; 144:103273. [PMID: 33515908 DOI: 10.1016/j.jri.2021.103273] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 12/11/2020] [Accepted: 01/06/2021] [Indexed: 02/07/2023]
Abstract
The production of pro-inflammatory cytokines during inflammatory processes has been associated with preterm birth (PTB) and fetal injury in humans and mice. We previously demonstrated that exposition to an enriched environment (EE), defined as a noninvasive and biological significant stimulus of the sensory pathway combined with voluntary physical activity, prevented PTB and perinatal death induced by the systemic administration of bacterial lipopolysaccharide (LPS) in mice. This work aimed to analyze whether EE modulates the immune response to the inflammatory process induced by LPS in peripheral blood and the amniotic fluid (AF). We observed that EE modulated maternal white blood cell count and its response to LPS. Furthermore, we found higher levels of IL-10 and a higher percentage of B cells in AF from EE exposed mothers compared to controls. Albeit LPS significantly increased IL-6 levels in AF from both groups, it was 3.6 times higher in control environment (CE) exposed group when compared to EE. Similarly, levels of IL-22 were significantly increased by LPS in both groups, but it was 6.7 times higher in EE group. Interestingly, levels of PGE2 in AF were only increased in the EE-LPS treated group, and a positive correlation between IL-22 and PGE2 levels was observed. During lactation, EE prevented LPS-induced delay in physical landmarks analyzed to assess offspring development. Our results suggest that EE modulates the immune response to systemic LPS-administration protecting the offspring. We propose that an EE-like protocol could be designed for pregnant women aiming at preventing the sequelae present in premature children.
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Affiliation(s)
- Julieta Aylen Schander
- Laboratorio de Fisiopatología de la Preñez y el Parto, Centro de Estudios Farmacológicos y Botánicos, CONICET-UBA, Buenos Aires, Argentina.
| | - Carolina Marvaldi
- Laboratorio de Fisiopatología de la Preñez y el Parto, Centro de Estudios Farmacológicos y Botánicos, CONICET-UBA, Buenos Aires, Argentina
| | - Fernando Correa
- Laboratorio de Fisiopatología de la Preñez y el Parto, Centro de Estudios Farmacológicos y Botánicos, CONICET-UBA, Buenos Aires, Argentina
| | - Manuel Luis Wolfson
- Laboratorio de Fisiopatología de la Preñez y el Parto, Centro de Estudios Farmacológicos y Botánicos, CONICET-UBA, Buenos Aires, Argentina
| | - Maximiliano Cella
- Laboratorio de Fisiopatología de la Preñez y el Parto, Centro de Estudios Farmacológicos y Botánicos, CONICET-UBA, Buenos Aires, Argentina
| | - Julieta Aisemberg
- Laboratorio de Fisiopatología de la Preñez y el Parto, Centro de Estudios Farmacológicos y Botánicos, CONICET-UBA, Buenos Aires, Argentina
| | - Federico Jensen
- Laboratorio de Inmunología de la Reproducción, Centro de Estudios Farmacológicos y Botánicos, CONICET-UBA, Buenos Aires, Argentina
| | - Ana María Franchi
- Laboratorio de Fisiopatología de la Preñez y el Parto, Centro de Estudios Farmacológicos y Botánicos, CONICET-UBA, Buenos Aires, Argentina
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22
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Pritchett-Corning KR. Environmental Complexity and Research Outcomes. ILAR J 2020; 60:239-251. [PMID: 32559304 DOI: 10.1093/ilar/ilaa007] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 01/28/2020] [Accepted: 02/04/2020] [Indexed: 11/14/2022] Open
Abstract
Environmental complexity is an experimental paradigm as well as a potential part of animals' everyday housing experiences. In experimental uses, researchers add complexity to stimulate brain development, delay degenerative brain changes, elicit more naturalistic behaviors, and test learning and memory. Complexity can exacerbate or mitigate behavioral problems, give animals a sense of control, and allow for expression of highly driven, species-typical behaviors that can improve animal welfare. Complex environments should be designed thoughtfully with the animal's natural behaviors in mind, reported faithfully in the literature, and evaluated carefully for unexpected effects.
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Affiliation(s)
- Kathleen R Pritchett-Corning
- Office of Animal Resources, Faculty of Arts and Sciences, Harvard University, Cambridge, Massachusetts.,Department of Comparative Medicine, University of Washington, Seattle, Washington
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23
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Garrido A, Cruces J, Ceprián N, Hernández-Sánchez C, De Pablo F, De la Fuente M. Social Environment Ameliorates Behavioral and Immune Impairments in Tyrosine Hydroxylase Haploinsufficient Female Mice. J Neuroimmune Pharmacol 2020; 16:548-566. [PMID: 32772235 DOI: 10.1007/s11481-020-09947-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2020] [Accepted: 07/20/2020] [Indexed: 11/27/2022]
Abstract
The social environment can influence the functional capacity of nervous and immune systems, and consequently the state of health, especially in aged individuals. Adult female tyrosine hydroxylase haploinsufficient (TH-HZ) mice exhibit behavioral impairments, premature immunosenescence and oxidative- inflammatory stress. All these deteriorations are associated with a lower lifespan than wild type (WT) counterparts. The aim was to analyze whether the cohabitation with WT animals could revert or at least ameliorate the deterioration in the nervous and immune systems that female TH-HZ mice show at adult age. Female TH-HZ and WT mice at age of 3-4 weeks were divided into following groups: control TH-HZ (5 TH-HZ mice in the cage; TH-HZ100%), control WT (5 WT mice in the cage; WT100%), TH-HZ > 50% and WT < 50% (5 TH-HZ with 2 WT mice in each cage) as well as TH-HZ < 50% and WT > 50% (2 TH-HZ and 5 WT mice in each cage). At the age of 37-38 weeks, all mice were submitted to a battery of behavioral tests, evaluating sensorimotor abilities, exploratory capacities and anxiety-like behaviors. Subsequently, peritoneal leukocytes were extracted and several immune functions as well as oxidative and inflammatory stress parameters were analyzed. The results showed that the TH-HZ < 50% group had improved behavioral responses, especially anxiety-like behaviors, and the immunosenescence and oxidative stress of their peritoneal leukocytes were ameliorated. However, WT mice that cohabited with TH-HZ mice presented higher anxiety-like behaviors and deterioration in immune functions and in their inflammatory stress parameters. Thus, this social environment is capable of ameliorating the impairments associated with a haploinsufficiency of the th gene. Graphical Abstract.
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Affiliation(s)
- A Garrido
- Department of Genetics, Physiology and Microbiology (Physiology Unit), School of Biology, Complutense University of Madrid, José Antonio Nováis 12, 28040, Madrid, Spain.,Institute of Investigation of Hospital 12 de Octubre (i+12), 28041, Madrid, Spain
| | - J Cruces
- Department of Genetics, Physiology and Microbiology (Physiology Unit), School of Biology, Complutense University of Madrid, José Antonio Nováis 12, 28040, Madrid, Spain.,Institute of Investigation of Hospital 12 de Octubre (i+12), 28041, Madrid, Spain
| | - N Ceprián
- Department of Genetics, Physiology and Microbiology (Physiology Unit), School of Biology, Complutense University of Madrid, José Antonio Nováis 12, 28040, Madrid, Spain.,Institute of Investigation of Hospital 12 de Octubre (i+12), 28041, Madrid, Spain
| | - C Hernández-Sánchez
- 3D Lab (Development, Differentiation and Degeneration), Department of Molecular Biomedicine, Centro de Investigaciones Biológicas, Consejo Superior de Investigaciones Científicas, 28040, Madrid, Spain.,Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), ISCIII, Madrid, Spain
| | - F De Pablo
- 3D Lab (Development, Differentiation and Degeneration), Department of Molecular Biomedicine, Centro de Investigaciones Biológicas, Consejo Superior de Investigaciones Científicas, 28040, Madrid, Spain.,Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), ISCIII, Madrid, Spain
| | - Mónica De la Fuente
- Department of Genetics, Physiology and Microbiology (Physiology Unit), School of Biology, Complutense University of Madrid, José Antonio Nováis 12, 28040, Madrid, Spain. .,Institute of Investigation of Hospital 12 de Octubre (i+12), 28041, Madrid, Spain.
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24
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Early exposure to environmental enrichment protects male rats against neuropathic pain development after nerve injury. Exp Neurol 2020; 332:113390. [PMID: 32598929 DOI: 10.1016/j.expneurol.2020.113390] [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: 04/22/2020] [Revised: 06/17/2020] [Accepted: 06/24/2020] [Indexed: 12/30/2022]
Abstract
Because environmental elements modify chronic pain development and endogenous mechanisms of pain control are still a great therapeutic source, we investigated the effects of an early exposure to environmental enrichment (EE) in a translational model of neuropathic pain. Young male rats born and bred in an enriched environment, which did not count on running wheel, underwent chronic constriction injury (CCI) of sciatic nerve. EE abolished neuropathic pain behavior 14 days after CCI. Opioid receptors' antagonism reversed EE-analgesic effect. β-endorphin and met-enkephalin serum levels were increased only in EE-CCI group. Blockade of glucocorticoid receptors did not alter EE-analgesic effect, although corticosterone circulating levels were increased in EE animals. In the spinal cord, EE controlled CCI-induced serotonin increase. In DRG, EE blunted the expression of ATF-3 after CCI. Surprisingly, EE-CCI group showed a remarkable preservation of sciatic nerve fibers compared to NE-CCI group. This work demonstrated global effects induced by an EE protocol that explain, in part, the protective role of EE upon chronic noxious stimulation, reinforcing the importance of endogenous mechanisms in the prevention of chronic pain development.
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25
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Law M, Jarrett P, Nater UM, Skoluda N, Broadbent E. The effects of environmental enrichment on skin barrier recovery in humans: a randomised trial. Sci Rep 2020; 10:9829. [PMID: 32555211 PMCID: PMC7299948 DOI: 10.1038/s41598-020-66687-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Accepted: 05/23/2020] [Indexed: 12/16/2022] Open
Abstract
This study investigated whether environmental enrichment (EE) could reduce stress and improve wound healing in humans. 120 participants underwent a standardised tape-stripping procedure and were then randomised to interact for 30 minutes with one of three EE interventions (comfort blankets as tactile enrichment, music as auditory enrichment or a Paro robot as multi-sensory enrichment) or to a control group. Skin barrier recovery (SBR) was measured using transepidermal water loss at baseline, after tape-stripping and after the intervention. Psychological variables, cortisol and alpha-amylase were measured at the three time-points. SBR did not significantly differ between the EE conditions and the control condition. The music condition had higher stimulation levels than the control condition, and the comfort condition had significantly lower relaxation levels than the control condition after the intervention. The EE interventions tested were not beneficial for wound healing compared to a control group. Limitations were that the sample were not stressed and an active control condition was used.
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Affiliation(s)
- Mikaela Law
- Department of Psychological Medicine, University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand
| | - Paul Jarrett
- Department of Dermatology, Middlemore Hospital, Auckland, New Zealand.,Department of Medicine, University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand
| | - Urs M Nater
- Faculty of Psychology, University of Vienna, Vienna, 1010, Austria
| | - Nadine Skoluda
- Faculty of Psychology, University of Vienna, Vienna, 1010, Austria
| | - Elizabeth Broadbent
- Department of Psychological Medicine, University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand.
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26
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Cope EC, Opendak M, LaMarca EA, Murthy S, Park CY, Olson LB, Martinez S, Leung JM, Graham AL, Gould E. The effects of living in an outdoor enclosure on hippocampal plasticity and anxiety-like behavior in response to nematode infection. Hippocampus 2018; 29:366-377. [PMID: 30252982 DOI: 10.1002/hipo.23033] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Revised: 08/23/2018] [Accepted: 09/20/2018] [Indexed: 12/17/2022]
Abstract
The hippocampus of rodents undergoes structural remodeling throughout adulthood, including the addition of new neurons. Adult neurogenesis is sensitive to environmental enrichment and stress. Microglia, the brain's resident immune cells, are involved in adult neurogenesis by engulfing dying new neurons. While previous studies using laboratory environmental enrichment have investigated alterations in brain structure and function, they do not provide an adequate reflection of living in the wild, in which stress and environmental instability are common. Here, we compared mice living in standard laboratory settings to mice living in outdoor enclosures to assess the complex interactions among environment, gut infection, and hippocampal plasticity. We infected mice with parasitic worms and studied their effects on adult neurogenesis, microglia, and functions associated with the hippocampus, including cognition and anxiety regulation. We found an increase in immature neuron numbers of mice living in outdoor enclosures regardless of infection. While outdoor living prevented increases in microglial reactivity induced by infection in both the dorsal and ventral hippocampus, outdoor mice with infection had fewer microglia and microglial processes in the ventral hippocampus. We observed no differences in cognitive performance on the hippocampus-dependent object location task between infected and uninfected mice living in either setting. However, we found that infection caused an increase in anxiety-like behavior in the open field test but only in outdoor mice. These findings suggest that living conditions, as well as gut infection, interact to produce complex effects on brain structure and function.
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Affiliation(s)
- Elise C Cope
- Princeton Neuroscience Institute and Department of Psychology, Princeton University, Princeton, New Jersey
| | - Maya Opendak
- Princeton Neuroscience Institute and Department of Psychology, Princeton University, Princeton, New Jersey
| | - Elizabeth A LaMarca
- Princeton Neuroscience Institute and Department of Psychology, Princeton University, Princeton, New Jersey
| | - Sahana Murthy
- Princeton Neuroscience Institute and Department of Psychology, Princeton University, Princeton, New Jersey
| | - Christin Y Park
- Princeton Neuroscience Institute and Department of Psychology, Princeton University, Princeton, New Jersey
| | - Lyra B Olson
- Princeton Neuroscience Institute and Department of Psychology, Princeton University, Princeton, New Jersey
| | - Susana Martinez
- Princeton Neuroscience Institute and Department of Psychology, Princeton University, Princeton, New Jersey
| | - Jacqueline M Leung
- Department of Ecology and Evolutionary Biology, Princeton University, Princeton, New Jersey
| | - Andrea L Graham
- Department of Ecology and Evolutionary Biology, Princeton University, Princeton, New Jersey
| | - Elizabeth Gould
- Princeton Neuroscience Institute and Department of Psychology, Princeton University, Princeton, New Jersey
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27
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Otaki M, Hirano T, Yamaguchi Y, Kaida K, Koshika S, Nagata K, Nishimura M, Kakinuma S, Shimada Y, Kobayashi Y. Changes in the function and phenotype of resident peritoneal macrophages after housing in an enriched environment. Int Immunopharmacol 2018; 65:44-49. [PMID: 30273916 DOI: 10.1016/j.intimp.2018.09.037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Revised: 09/19/2018] [Accepted: 09/25/2018] [Indexed: 01/04/2023]
Abstract
Exposure to an enriched environment (EE) affects not only brain functions but also immune responses upon viral or bacterial infections. In this study, we examined changes in the phagocytic response and chemokine production of resident peritoneal macrophages after mice had been housed under EE conditions for 6 or 8 weeks, and then explored the possibility that EE could cause a change in the macrophage phenotype by means of flow cytometry as well as quantitative RT-PCR. The percentages of EE macrophages phagocytosing S. aureus and apoptotic neutrophils were significantly larger than those of standard environment (SE) macrophages. After coculturing with S. aureus, EE macrophages tended to produce greater amounts of chemokines such as MIP-2, KC and MCP-1 than SE ones, although the increases for MIP-2 and KC were not statistically significant. As compared with SE macrophages, EE macrophages included more CD40-positive cells (M1 marker), and expressed more mRNAs of IL-6 (M1 marker) and IRF4 (M2 marker), and less mRNA of CD38 (M1 marker), suggesting either the possibility that EE macrophages are a mixed population of M1 and M2 macrophages or the possibility that they are a unique population with a mixed M1 and M2 macrophage phenotype.
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Affiliation(s)
- Momoko Otaki
- Division of Molecular Medicine, Department of Biomolecular Science, Faculty of Science, Toho University, Chiba, Japan
| | - Tetsuya Hirano
- Division of Molecular Medicine, Department of Biomolecular Science, Faculty of Science, Toho University, Chiba, Japan
| | - Yohko Yamaguchi
- Division of Molecular Medicine, Department of Biomolecular Science, Faculty of Science, Toho University, Chiba, Japan
| | - Kohei Kaida
- Division of Molecular Medicine, Department of Biomolecular Science, Faculty of Science, Toho University, Chiba, Japan
| | - Seiji Koshika
- Division of Molecular Medicine, Department of Biomolecular Science, Faculty of Science, Toho University, Chiba, Japan
| | - Kisaburo Nagata
- Division of Molecular Medicine, Department of Biomolecular Science, Faculty of Science, Toho University, Chiba, Japan
| | - Mayumi Nishimura
- Department of Radiation Effects Research, National Institute of Radiological Sciences (NIRS), National Institutes for Quantum and Radiological Science and Technology (QST), Chiba, Japan
| | - Shizuko Kakinuma
- Department of Radiation Effects Research, National Institute of Radiological Sciences (NIRS), National Institutes for Quantum and Radiological Science and Technology (QST), Chiba, Japan
| | - Yoshiya Shimada
- Department of Radiation Effects Research, National Institute of Radiological Sciences (NIRS), National Institutes for Quantum and Radiological Science and Technology (QST), Chiba, Japan
| | - Yoshiro Kobayashi
- Division of Molecular Medicine, Department of Biomolecular Science, Faculty of Science, Toho University, Chiba, Japan.
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28
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Systemic effects in naïve mice injected with immunomodulatory lectin ArtinM. PLoS One 2017; 12:e0187151. [PMID: 29084277 PMCID: PMC5662225 DOI: 10.1371/journal.pone.0187151] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Accepted: 10/14/2017] [Indexed: 01/07/2023] Open
Abstract
Toll-like receptors (TLR) contain N-glycans, which are important glycotargets for plant lectins, to induce immunomodulation. The lectin ArtinM obtained from Artocarpus heterophyllus interacts with TLR2 N-glycans to stimulate IL-12 production by antigen-presenting cells and to drive the immune response toward the Th1 axis, conferring resistance against intracellular pathogens. This immunomodulatory effect was demonstrated by subcutaneously injecting (s.c.) ArtinM (0.5 μg) in infected mice. In this study, we evaluated the systemic implications of ArtinM administration in naïve BALB/c mice. The mice were s.c. injected twice (7 days interval) with ArtinM (0.5, 1.0, 2.5, or 5.0 μg), LPS (positive control), or PBS (negative control) and euthanized after three days. None of the ArtinM-injected mice exhibited change in body weight, whereas the relative mass of the heart and lungs diminished in mice injected with the highest ArtinM dose (5.0 μg). Few and discrete inflammatory foci were detected in the heart, lung, and liver of mice receiving ArtinM at doses ≥2.5 μg. Moreover, the highest dose of ArtinM was associated with increased serum levels of creatine kinase MB isoenzyme (CK-MB) and globulins as well as an augmented presence of neutrophils in the heart and lung. IL-12, IFN-γ, TNF-α, and IL-10 measurements in the liver, kidney, spleen, heart, and lung homogenates revealed decreased IL-10 level in the heart and lung of mice injected with 5.0 μg ArtinM. We also found an augmented frequency of T helper and B cells in the spleen of all ArtinM-injected naïve mice, whereas the relative expressions of T-bet, GATA-3, and ROR-γt were similar to those in PBS-injected animals. Our study demonstrates that s.c. injection of high doses of ArtinM in naïve mice promotes mild inflammatory lesions and that a low immunomodulatory dose is innocuous to naïve mice.
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