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Glinin TS, Petrova MV, Shcherbinina V, Shubina AN, Dukelskaya AV, Starshova PV, Mamontova V, Burnusuz A, Godunova AO, Romashchenko AV, Moshkin MP, Khaitovich P, Daev EV. Pheromone of grouped female mice impairs genome stability in male mice through stress-mediated pathways. Sci Rep 2023; 13:17622. [PMID: 37848549 PMCID: PMC10582102 DOI: 10.1038/s41598-023-44647-w] [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: 07/22/2023] [Accepted: 10/11/2023] [Indexed: 10/19/2023] Open
Abstract
Population density is known to affect the health and survival of many species, and is especially important for social animals. In mice, living in crowded conditions results in the disruption of social interactions, chronic stress, and immune and reproductive suppression; however, the underlying mechanisms remain unclear. Here, we investigated the role of chemosignals in the regulation of mouse physiology and behavior in response to social crowding. The pheromone 2,5-dimethylpyrazine (2,5-DMP), which is released by female mice in crowded conditions, induced aversion, glucocorticoid elevation and, when chronic, resulted in reproductive and immune suppression. 2,5-DMP olfaction induced genome destabilization in bone marrow cells in a stress-dependent manner, providing a plausible mechanism for crowding-induced immune dysfunction. Interestingly, the genome-destabilizing effect of 2,5-DMP was comparable to a potent mouse stressor (immobilization), and both stressors led to correlated expression changes in genes regulating cellular stress response. Thus, our findings demonstrate that, in mice, the health effects of crowding may be explained at least in part by chemosignals and also propose a significant role of stress and genome destabilization in the emergence of crowding effects.
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Affiliation(s)
- Timofey S Glinin
- Department of Genetics and Biotechnology, Saint-Petersburg State University, Universitetskaya Emb., 7-9, Saint Petersburg, Russia, 199034.
- Open Longevity, 15260 Ventura Blvd, STE 2230, Sherman Oaks, CA, 91403, USA.
- Endocrine Neoplasia Laboratory, Department of Surgery, University of California, San Francisco, CA, 94143, USA.
| | - Marina V Petrova
- Department of Genetics and Biotechnology, Saint-Petersburg State University, Universitetskaya Emb., 7-9, Saint Petersburg, Russia, 199034
- Center of Molecular and Cellular Biology, Skolkovo Institute of Science and Technology, Bolshoy Blv. 30, Moscow, Russia, 121205
| | - Veronika Shcherbinina
- Department of Genetics and Biotechnology, Saint-Petersburg State University, Universitetskaya Emb., 7-9, Saint Petersburg, Russia, 199034
- Laboratory of Higher Nervous Activity Genetics, Pavlov Institute of Physiology, Russian Academy of Sciences, Makarova Emb. 6, Saint Petersburg, Russia, 199034
| | - Anastasia N Shubina
- Department of Genetics and Biotechnology, Saint-Petersburg State University, Universitetskaya Emb., 7-9, Saint Petersburg, Russia, 199034
- Open Longevity, 15260 Ventura Blvd, STE 2230, Sherman Oaks, CA, 91403, USA
| | - Anna V Dukelskaya
- Department of Genetics and Biotechnology, Saint-Petersburg State University, Universitetskaya Emb., 7-9, Saint Petersburg, Russia, 199034
| | - Polina V Starshova
- Department of Genetics and Biotechnology, Saint-Petersburg State University, Universitetskaya Emb., 7-9, Saint Petersburg, Russia, 199034
| | - Victoria Mamontova
- Department of Genetics and Biotechnology, Saint-Petersburg State University, Universitetskaya Emb., 7-9, Saint Petersburg, Russia, 199034
- Mildred Scheel Early Career Center for Cancer Research (Mildred-Scheel-Nachwuchszentrum, MSNZ), University Hospital Würzburg, Josef-Schneider Str. 2, 97080, Würzburg, Germany
- Department of Biochemistry and Molecular Biology, Biocenter of the University of Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Alexandra Burnusuz
- Department of Genetics and Biotechnology, Saint-Petersburg State University, Universitetskaya Emb., 7-9, Saint Petersburg, Russia, 199034
| | - Alena O Godunova
- The Federal Research Center Institute of Cytology and Genetics, SB RAS, Academician Lavrentiev Avenue, 10, Novosibirsk, Russia, 630090
| | - Alexander V Romashchenko
- The Federal Research Center Institute of Cytology and Genetics, SB RAS, Academician Lavrentiev Avenue, 10, Novosibirsk, Russia, 630090
- International Tomography Center, Institutskaya St., 3A, Novosibirsk, Russia, 630090
- Federal Research Centre of Biological Systems and Agrotechnologies, RAS, St. January 9, 29, Orenburg, Russia, 460000
| | - Mikhail P Moshkin
- The Federal Research Center Institute of Cytology and Genetics, SB RAS, Academician Lavrentiev Avenue, 10, Novosibirsk, Russia, 630090
| | - Philipp Khaitovich
- Center for Neurobiology and Brain Restoration, Skolkovo Institute of Science and Technology, 3 Nobelya St., Moscow, Russia, 121205
| | - Eugene V Daev
- Department of Genetics and Biotechnology, Saint-Petersburg State University, Universitetskaya Emb., 7-9, Saint Petersburg, Russia, 199034
- Laboratory of Higher Nervous Activity Genetics, Pavlov Institute of Physiology, Russian Academy of Sciences, Makarova Emb. 6, Saint Petersburg, Russia, 199034
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Morais-Silva G, Gomes-de-Souza L, Costa-Ferreira W, Pavan JC, Crestani CC, Marin MT. Cardiovascular Reactivity to a Novel Stressor: Differences on Susceptible and Resilient Rats to Social Defeat Stress. Front Physiol 2022; 12:781447. [PMID: 35250603 PMCID: PMC8889071 DOI: 10.3389/fphys.2021.781447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Accepted: 12/13/2021] [Indexed: 11/13/2022] Open
Abstract
Prolonged and heightened responses to stress are known factors that influence the development of mood disorders and cardiovascular diseases. Moreover, the coping strategies related to the experience of adverse events, i.e., resilience or the susceptibility to stress, are determinants for the individual risk of developing such diseases. Susceptible rats to the social defeat stress (SDS), identified by the social interaction test (SIT), show behavioral and cardiovascular alterations after SDS exposure that are not found in resilient rats. However, it is not elucidated yet how the cardiovascular system of susceptible and resilient phenotypes responds to a new stressor after SDS exposure. Thus, using the SDS exposure followed by the SIT, we evaluated heart rate, blood pressure (BP), tail skin temperature, and circulating corticosterone responses to an acute session of restraint stress in susceptible and resilient rats to SDS. Susceptible rats showed resting tachycardia and exaggerated BP response to restraint stress, while resilient rats did not present such alterations. In contrast, both phenotypes showed increased plasma corticosterone and a drop in tail skin temperature to restraint stress, which was similar to that observed in control animals. Our results revealed an increased cardiovascular reactivity in response to a new stressful stimulus in susceptible rats, which might be related to a greater risk for the development of cardiovascular diseases.
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Affiliation(s)
- Gessynger Morais-Silva
- Laboratory of Pharmacology, School of Pharmaceutical Sciences of Araraquara, São Paulo State University, Araraquara, Brazil
- Joint Graduate Program in Physiological Sciences (PIPGCF), UFSCar/UNESP, Araraquara, Brazil
| | - Lucas Gomes-de-Souza
- Laboratory of Pharmacology, School of Pharmaceutical Sciences of Araraquara, São Paulo State University, Araraquara, Brazil
- Joint Graduate Program in Physiological Sciences (PIPGCF), UFSCar/UNESP, Araraquara, Brazil
| | - Willian Costa-Ferreira
- Laboratory of Pharmacology, School of Pharmaceutical Sciences of Araraquara, São Paulo State University, Araraquara, Brazil
- Joint Graduate Program in Physiological Sciences (PIPGCF), UFSCar/UNESP, Araraquara, Brazil
| | - Jacqueline C. Pavan
- Laboratory of Pharmacology, School of Pharmaceutical Sciences of Araraquara, São Paulo State University, Araraquara, Brazil
| | - Carlos C. Crestani
- Laboratory of Pharmacology, School of Pharmaceutical Sciences of Araraquara, São Paulo State University, Araraquara, Brazil
- Joint Graduate Program in Physiological Sciences (PIPGCF), UFSCar/UNESP, Araraquara, Brazil
| | - Marcelo T. Marin
- Laboratory of Pharmacology, School of Pharmaceutical Sciences of Araraquara, São Paulo State University, Araraquara, Brazil
- Joint Graduate Program in Physiological Sciences (PIPGCF), UFSCar/UNESP, Araraquara, Brazil
- *Correspondence: Marcelo T. Marin,
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3
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Normann MC, Cox M, Akinbo OI, Watanasriyakul WT, Kovalev D, Ciosek S, Miller T, Grippo AJ. Differential paraventricular nucleus activation and behavioral responses to social isolation in prairie voles following environmental enrichment with and without physical exercise. Soc Neurosci 2021; 16:375-390. [PMID: 33947321 DOI: 10.1080/17470919.2021.1926320] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Social stressors produce neurobiological and emotional consequences in social species. Environmental interventions, such as environmental enrichment and exercise, may modulate physiological and behavioral stress responses. The present study investigated the benefits of environmental enrichment and exercise against social stress in the socially monogamous prairie vole. Female prairie voles remained paired with a sibling (control) or were isolated from a sibling for 4 weeks. The isolated groups were assigned to isolated sedentary, isolated with environmental enrichment, or isolated with both enrichment and exercise conditions. Behaviors related to depression, anxiety, and sociality were investigated using the forced swim test (FST), elevated plus maze (EPM), and a social crowding stressor (SCS), respectively. cFos expression was evaluated in stress-related circuitry following the SCS. Both enrichment and enrichment with exercise protected against depression-relevant behaviors in the FST and social behavioral disruptions in the SCS, but only enrichment with exercise protected against anxiety-related behaviors in the EPM and altered cFos expression in the hypothalamic paraventricular nucleus in isolated prairie voles. Enrichment may improve emotion-related and social behaviors, however physical exercise may be an important component of environmental strategies for protecting against anxiety-related behaviors and reducing neural activation as a function of social stress.
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Affiliation(s)
- Marigny C Normann
- Department of Psychology, Northern Illinois University, DeKalb, IL, USA
| | - Miranda Cox
- Department of Psychology, Northern Illinois University, DeKalb, IL, USA
| | - Oreoluwa I Akinbo
- Department of Psychology, Northern Illinois University, DeKalb, IL, USA
| | | | - Dmitry Kovalev
- Department of Psychology, Northern Illinois University, DeKalb, IL, USA
| | - Sarah Ciosek
- Department of Psychology, Northern Illinois University, DeKalb, IL, USA
| | - Thomas Miller
- Department of Psychology, Northern Illinois University, DeKalb, IL, USA
| | - Angela J Grippo
- Department of Psychology, Northern Illinois University, DeKalb, IL, USA
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Morais-Silva G, Costa-Ferreira W, Gomes-de-Souza L, Pavan JC, Crestani CC, Marin MT. Cardiovascular outcomes related to social defeat stress: New insights from resilient and susceptible rats. Neurobiol Stress 2019; 11:100181. [PMID: 31236438 PMCID: PMC6582241 DOI: 10.1016/j.ynstr.2019.100181] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 05/28/2019] [Accepted: 06/04/2019] [Indexed: 12/13/2022] Open
Abstract
Stress exposure is an important risk factor for psychiatric and cardiovascular disorders. Two phenotypes related to coping with stress can be observed in rodents that experience chronic social defeat stress (SDS): susceptible, showing social avoidance and behavioral changes related to depression, and resilient, showing none of these alterations. Moreover, a strong correlation exists between depression and the development of or mortality due to cardiovascular diseases. Nevertheless, little is known about cardiovascular alterations related to SDS exposure in those phenotypes or their correlation with depressive-like behaviors. Using a chronic SDS protocol followed by the social interaction test, we identified Wistar rats as resilient or susceptible to SDS. Susceptible animals showed increased depressive-like behaviors with resting tachycardia and decreased heart rate variability (HRV) due to increased sympathetic tone in the heart and a less effective baroreflex. In contrast, resilient rats were protected from these alterations by increased vagal tone, resulting in greater HRV values. To our knowledge, our study is the first to indicate that harmful cardiovascular outcomes are related to depressive-like behaviors in susceptible rats and to suggest a mechanism by which resilient rats are protected from these changes. Also, our results suggest that enhanced HRV and vagal tone may be an important trait in resilient individuals. Cardiovascular alterations are correlated to depressive-like behaviors. Susceptible rats show increased sympathetic tone to the heart and lower HRV. Baroreflex effectiveness in susceptible rats is impaired. Resilient rats show an increased vagal tone to the heart and greater values of HRV.
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Affiliation(s)
- Gessynger Morais-Silva
- São Paulo State University (UNESP), School of Pharmaceutical Sciences, Laboratory of Pharmacology, Araraquara, SP, Brazil.,Joint Graduate Program in Physiological Sciences (PIPGCF), UFSCar/UNESP, São Carlos/Araraquara, SP, Brazil
| | - Willian Costa-Ferreira
- São Paulo State University (UNESP), School of Pharmaceutical Sciences, Laboratory of Pharmacology, Araraquara, SP, Brazil.,Joint Graduate Program in Physiological Sciences (PIPGCF), UFSCar/UNESP, São Carlos/Araraquara, SP, Brazil
| | - Lucas Gomes-de-Souza
- São Paulo State University (UNESP), School of Pharmaceutical Sciences, Laboratory of Pharmacology, Araraquara, SP, Brazil.,Joint Graduate Program in Physiological Sciences (PIPGCF), UFSCar/UNESP, São Carlos/Araraquara, SP, Brazil
| | - Jacqueline C Pavan
- São Paulo State University (UNESP), School of Pharmaceutical Sciences, Laboratory of Pharmacology, Araraquara, SP, Brazil
| | - Carlos C Crestani
- São Paulo State University (UNESP), School of Pharmaceutical Sciences, Laboratory of Pharmacology, Araraquara, SP, Brazil.,Joint Graduate Program in Physiological Sciences (PIPGCF), UFSCar/UNESP, São Carlos/Araraquara, SP, Brazil
| | - Marcelo T Marin
- São Paulo State University (UNESP), School of Pharmaceutical Sciences, Laboratory of Pharmacology, Araraquara, SP, Brazil.,Joint Graduate Program in Physiological Sciences (PIPGCF), UFSCar/UNESP, São Carlos/Araraquara, SP, Brazil
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5
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Grippo AJ. Opinion: "Heart Rate Variability, Health and Well-Being: A Systems Perspective" Research Topic. Front Public Health 2017; 5:246. [PMID: 28993803 PMCID: PMC5622597 DOI: 10.3389/fpubh.2017.00246] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Accepted: 08/29/2017] [Indexed: 01/06/2023] Open
Affiliation(s)
- Angela J Grippo
- Department of Psychology, Northern Illinois University, DeKalb, IL, United States
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6
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Carnevali L, Montano N, Statello R, Sgoifo A. Rodent models of depression-cardiovascular comorbidity: Bridging the known to the new. Neurosci Biobehav Rev 2017; 76:144-153. [DOI: 10.1016/j.neubiorev.2016.11.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Revised: 10/27/2016] [Accepted: 11/09/2016] [Indexed: 12/22/2022]
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7
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Adolescent vulnerability to cardiovascular consequences of chronic emotional stress: Review and perspectives for future research. Neurosci Biobehav Rev 2017; 74:466-475. [DOI: 10.1016/j.neubiorev.2016.03.027] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Revised: 03/28/2016] [Accepted: 03/29/2016] [Indexed: 12/26/2022]
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8
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McNeal N, Anderson EM, Moenk D, Trahanas D, Matuszewich L, Grippo AJ. Social isolation alters central nervous system monoamine content in prairie voles following acute restraint. Soc Neurosci 2017; 13:173-183. [PMID: 28008793 DOI: 10.1080/17470919.2016.1276473] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Animal models have shown that social isolation and other forms of social stress lead to depressive- and anxiety-relevant behaviors, as well as neuroendocrine and physiological dysfunction. The goal of this study was to investigate the effects of prior social isolation on neurotransmitter content following acute restraint in prairie voles. Animals were either paired with a same-sex sibling or isolated for 4 weeks. Plasma adrenal hormones and ex vivo tissue concentrations of monoamine neurotransmitters and their metabolites were measured following an acute restraint stressor in all animals. Isolated prairie voles displayed significantly increased circulating adrenocorticotropic hormone levels, as well as elevated serotonin and dopamine levels in the hypothalamus, and potentially decreased levels of serotonin in the frontal cortex. However, no group differences in monoamine levels were observed in the hippocampus or raphe. The results suggest that social stress may bias monoamine neurotransmission and stress hormone function to subsequent acute stressors, such as restraint. These findings improve our understanding of the neurobiological mechanisms underlying the consequences of social stress.
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Affiliation(s)
- Neal McNeal
- a Department of Psychology , Northern Illinois University , DeKalb , IL , USA
| | - Eden M Anderson
- a Department of Psychology , Northern Illinois University , DeKalb , IL , USA
| | - Deirdre Moenk
- a Department of Psychology , Northern Illinois University , DeKalb , IL , USA
| | - Diane Trahanas
- a Department of Psychology , Northern Illinois University , DeKalb , IL , USA
| | - Leslie Matuszewich
- a Department of Psychology , Northern Illinois University , DeKalb , IL , USA
| | - Angela J Grippo
- a Department of Psychology , Northern Illinois University , DeKalb , IL , USA
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9
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Crestani CC. Emotional Stress and Cardiovascular Complications in Animal Models: A Review of the Influence of Stress Type. Front Physiol 2016; 7:251. [PMID: 27445843 PMCID: PMC4919347 DOI: 10.3389/fphys.2016.00251] [Citation(s) in RCA: 74] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Accepted: 06/09/2016] [Indexed: 01/22/2023] Open
Abstract
Emotional stress has been recognized as a modifiable risk factor for cardiovascular diseases. The impact of stress on physiological and psychological processes is determined by characteristics of the stress stimulus. For example, distinct responses are induced by acute vs. chronic aversive stimuli. Additionally, the magnitude of stress responses has been reported to be inversely related to the degree of predictability of the aversive stimulus. Therefore, the purpose of the present review was to discuss experimental research in animal models describing the influence of stressor stimulus characteristics, such as chronicity and predictability, in cardiovascular dysfunctions induced by emotional stress. Regarding chronicity, the importance of cardiovascular and autonomic adjustments during acute stress sessions and cardiovascular consequences of frequent stress response activation during repeated exposure to aversive threats (i.e., chronic stress) is discussed. Evidence of the cardiovascular and autonomic changes induced by chronic stressors involving daily exposure to the same stressor (predictable) vs. different stressors (unpredictable) is reviewed and discussed in terms of the impact of predictability in cardiovascular dysfunctions induced by stress.
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Affiliation(s)
- Carlos C Crestani
- Faculdade de Ciências Farmacêuticas, UNESP - Univ Estadual Paulista Araraquara, Brasil
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10
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Yamasaki T, Oda R, Imai K, Taniguchi D, Toyama S, Seno T, Arai Y, Ikoma K, Fujiwara H, Tokunaga D, Kawahito Y, Kubo T. Efficacy of MRP8/14 as a Marker of Disease Activity in Rheumatoid Arthritis. ACTA ACUST UNITED AC 2016. [DOI: 10.4236/ojra.2016.62006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Scotti MAL, Carlton ED, Demas GE, Grippo AJ. Social isolation disrupts innate immune responses in both male and female prairie voles and enhances agonistic behavior in female prairie voles (Microtus ochrogaster). Horm Behav 2015; 70:7-13. [PMID: 25639952 PMCID: PMC4409529 DOI: 10.1016/j.yhbeh.2015.01.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2014] [Revised: 01/21/2015] [Accepted: 01/23/2015] [Indexed: 12/12/2022]
Abstract
Psychosocial stress, specifically social isolation, is an important risk factor for the development of a variety of psychological and physiological disorders. Changes in immune function have been hypothesized to mediate this relationship. The current study used the prairie vole (Microtus ochrogaster) model of isolation-induced depressive-like behavior to test whether social isolation led to changes in innate immune function. Specifically, we used hemolytic complement (CH50) and bacteria killing assays to assess innate immunity, in paired or singly housed male and female prairie voles. Further, in a second experiment we tested whether females exposed to an additional short-term social stressor, a resident-intruder trial, would show changes in immune function as well as enhanced hypothalamic pituitary axis (HPA) activity as indicated by elevated plasma corticosterone levels. Socially isolated animals, regardless of sex, had significantly reduced CH50s and bacteria killing ability. Socially isolated females exposed to a resident-intruder stressor also showed reduced CH50s and bacteria killing ability as well as significant increases in aggressive behavior, however, they did not show elevated circulating corticosterone levels. Collectively, these data will help inform our understanding of the relationship between social isolation and physiological and psychological health.
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Affiliation(s)
- Melissa-Ann L Scotti
- Department of Psychiatry, University of Illinois at Chicago, Chicago, IL 60612, USA; Department of Psychology, Northern Illinois University, DeKalb, IL 60115, USA.
| | | | - Gregory E Demas
- Department of Biology, Indiana University, Bloomington, IN 47405, USA
| | - Angela J Grippo
- Department of Psychology, Northern Illinois University, DeKalb, IL 60115, USA
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Beery AK, Kaufer D. Stress, social behavior, and resilience: insights from rodents. Neurobiol Stress 2015; 1:116-127. [PMID: 25562050 PMCID: PMC4281833 DOI: 10.1016/j.ynstr.2014.10.004] [Citation(s) in RCA: 239] [Impact Index Per Article: 26.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2014] [Accepted: 10/24/2014] [Indexed: 11/20/2022] Open
Abstract
The neurobiology of stress and the neurobiology of social behavior are deeply intertwined. The social environment interacts with stress on almost every front: social interactions can be potent stressors; they can buffer the response to an external stressor; and social behavior often changes in response to stressful life experience. This review explores mechanistic and behavioral links between stress, anxiety, resilience, and social behavior in rodents, with particular attention to different social contexts. We consider variation between several different rodent species and make connections to research on humans and non-human primates.
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Affiliation(s)
- Annaliese K. Beery
- Department of Psychology, Department of Biology, Neuroscience Program, Smith College, Northampton, MA, USA
| | - Daniela Kaufer
- Department of Integrative Biology, Helen Wills Neuroscience Institute, University of California, Berkeley, CA, USA
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13
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Grippo AJ, Moffitt JA, Henry MK, Firkins R, Senkler J, McNeal N, Wardwell J, Scotti MAL, Dotson A, Schultz R. Altered Connexin 43 and Connexin 45 protein expression in the heart as a function of social and environmental stress in the prairie vole. Stress 2015; 18:107-14. [PMID: 25338193 PMCID: PMC4675659 DOI: 10.3109/10253890.2014.979785] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Exposure to social and environmental stressors may influence behavior as well as autonomic and cardiovascular regulation, potentially leading to depressive disorders and cardiac dysfunction including elevated sympathetic drive, reduced parasympathetic function, and ventricular arrhythmias. The cellular mechanisms that underlie these interactions are not well understood. One mechanism may involve alterations in the expression of Connexin43 (Cx43) and Connexin45 (Cx45), gap junction proteins in the heart that play an important role in ensuring efficient cell-to-cell coupling and the maintenance of cardiac rhythmicity. The present study investigated the hypothesis that long-term social isolation, combined with mild environmental stressors, would produce both depressive behaviors and altered Cx43 and Cx45 expression in the left ventricle of prairie voles - a socially monogamous rodent model. Adult, female prairie voles were exposed to either social isolation (n = 22) or control (paired, n = 23) conditions (4 weeks), alone or in combination with chronic mild stress (CMS) (1 week). Social isolation, versus paired control conditions, produced significantly (p < 0.05) increased depressive behaviors in a 5-min forced swim test, and CMS exacerbated (p < 0.05) these behaviors. Social isolation (alone) reduced (p < 0.05) total Cx43 expression in the left ventricle; whereas CMS (but not isolation) increased (p < 0.05) total Cx45 expression and reduced (p < 0.05) the Cx43/Cx45 ratio, measured via Western blot analysis. The present findings provide insight into potential cellular mechanisms underlying altered cardiac rhythmicity associated with social and environmental stress in the prairie vole.
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Affiliation(s)
- Angela J. Grippo
- Department of Psychology, Northern Illinois University, DeKalb, IL
| | - Julia A. Moffitt
- Department of Physiology and Pharmacology, Des Moines University, Des Moines, IA
- Department of Kinesiology, St. Ambrose University, Davenport, IA
| | - Matthew K. Henry
- Department of Physiology and Pharmacology, Des Moines University, Des Moines, IA
| | - Rachel Firkins
- Department of Physiology and Pharmacology, Des Moines University, Des Moines, IA
| | - Jonathan Senkler
- Department of Physiology and Pharmacology, Des Moines University, Des Moines, IA
| | - Neal McNeal
- Department of Psychology, Northern Illinois University, DeKalb, IL
| | - Joshua Wardwell
- Department of Psychology, Northern Illinois University, DeKalb, IL
| | - Melissa-Ann L. Scotti
- Department of Psychology, Northern Illinois University, DeKalb, IL
- Department of Psychiatry and Brain-Body Center, University of Illinois at Chicago, Chicago, IL
| | - Ashley Dotson
- Department of Psychology, Northern Illinois University, DeKalb, IL
| | - Rachel Schultz
- Department of Psychology, Northern Illinois University, DeKalb, IL
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15
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The effects of environmental enrichment on depressive and anxiety-relevant behaviors in socially isolated prairie voles. Psychosom Med 2014; 76:277-84. [PMID: 24804886 PMCID: PMC4020982 DOI: 10.1097/psy.0000000000000052] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
OBJECTIVES Social isolation is associated with depression, anxiety, and negative health outcomes. Environmental enrichment, including environmental and cognitive stimulation with inanimate objects and opportunities for physical exercise, may be an effective strategy to include in treatment paradigms for affective disorders as a function of social isolation. In a rodent model-the socially monogamous prairie vole-we investigated the hypothesis that depression- and anxiety-related behaviors after social isolation would be prevented and remediated with environmental enrichment. METHODS Experiment 1 investigated the preventive effects of environmental enrichment on negative affective behaviors when administered concurrently with social isolation. Experiment 2 investigated the remediating effects of enrichment on negative affective behaviors when administered after a period of isolation. Behaviors were measured in three operational tests: open field, forced swim test (FST), and elevated plus maze. RESULTS In isolated prairie voles, enrichment prevented depression-relevant (immobility in FST, group × housing interaction, p = .049) and anxiety-relevant behaviors (exploration in open field, group × housing interaction, p = .036; exploration in elevated plus maze, group × housing interaction, p = .049). Delayed enrichment also remediated these behaviors in isolated animals (immobility in FST, main effect of housing, p = .001; exploration in open field, main effect of housing, p = .047; exploration in elevated plus maze, main effect of housing, p = .001) and was slightly more effective than physical exercise alone in remediating anxiety-relevant behaviors. CONCLUSIONS These findings provide insight into the beneficial effects of an enriched environment on depression- and anxiety-relevant behaviors using a translational rodent model of social isolation.
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The socially stressed heart. Insights from studies in rodents. Neurosci Biobehav Rev 2014; 39:51-60. [DOI: 10.1016/j.neubiorev.2013.12.005] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2013] [Revised: 11/15/2013] [Accepted: 12/17/2013] [Indexed: 02/01/2023]
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Disruption of social bonds induces behavioral and physiological dysregulation in male and female prairie voles. Auton Neurosci 2013; 180:9-16. [PMID: 24161576 DOI: 10.1016/j.autneu.2013.10.001] [Citation(s) in RCA: 99] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2013] [Revised: 10/02/2013] [Accepted: 10/03/2013] [Indexed: 01/12/2023]
Abstract
The social disruption of losing a partner may have particularly strong adverse effects on psychological and physiological functioning. More specifically, social stressors may play a mediating role in the association between mood disorders and cardiovascular dysfunction. This study investigated the hypothesis that the disruption of established social bonds between male and female prairie voles would produce depressive behaviors and cardiac dysregulation, coupled with endocrine and autonomic nervous system dysfunction. In Experiment 1, behaviors related to depression, cardiac function, and autonomic nervous system regulation were monitored in male prairie voles during social bonding with a female partner, social isolation from the bonded partner, and a behavioral stressor. Social isolation produced depressive behaviors, increased heart rate, heart rhythm dysregulation, and autonomic imbalance characterized by increased sympathetic and decreased parasympathetic drive to the heart. In Experiment 2, behaviors related to depression and endocrine function were measured following social bonding and social isolation in both male and female prairie voles. Social isolation produced similar levels of depressive behaviors in both sexes, as well as significant elevations of adrenocorticotropic hormone and corticosterone. These alterations in behavioral and physiological functioning provide insight into the mechanisms by which social stressors negatively influence emotional and cardiovascular health in humans.
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Edmondson D, Newman JD, Whang W, Davidson KW. Emotional triggers in myocardial infarction: do they matter? Eur Heart J 2013; 34:300-6. [PMID: 23178642 PMCID: PMC3549526 DOI: 10.1093/eurheartj/ehs398] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2012] [Revised: 10/02/2012] [Accepted: 10/31/2012] [Indexed: 02/06/2023] Open
Abstract
Considerable excitement and interest have arisen recently concerning the role that acute emotional triggers may play in precipitating a myocardial infarction (MI). Observational studies have found repeatedly that patients report excessive anger, anxiety, sadness, grief, or acute stress immediately prior to onset of MI, and recent meta-analyses summarizing these findings reported strong associations between MI occurrence and many of these acute emotions. However, it is unclear whether and through what mechanisms acute emotional triggers might influence MI, and whether there is any clinical utility in knowing if or how emotions trigger MI. We debate whether emotional triggers matter by reviewing the recent evidence for the association between acute emotional triggers and MI and by describing the potential pathophysiological characteristics and mechanisms underlying this association and the preventive strategies that could be used to mitigate the risk of acute MI. We also examine whether the study of emotional triggers could influence clinical risk management or changes in clinical practice/management. We offer suggestions for research that might shed light on whether emotional triggers could initiate a paradigm shift in preventive cardiology, or whether acute emotional triggers are either intractable catalysts for, or merely an epiphenomenon of, some MIs.
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Affiliation(s)
| | | | | | - Karina W. Davidson
- Center for Behavioral Cardiovascular Health, Department of Medicine, Columbia University Medical Center, New York, NY, USA
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Salińska A, Włostowski T, Zambrzycka E. Effect of dietary cadmium and/or lead on histopathological changes in the kidneys and liver of bank voles Myodes glareolus kept in different group densities. ECOTOXICOLOGY (LONDON, ENGLAND) 2012; 21:2235-43. [PMID: 22855305 PMCID: PMC3475967 DOI: 10.1007/s10646-012-0979-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 07/14/2012] [Indexed: 05/08/2023]
Abstract
Bank voles free living in a contaminated environment are known to be more sensitive to cadmium (Cd) toxicity than the rodents exposed to Cd under laboratory conditions, but the reasons for this difference are poorly defined. The present work was designed to determine whether dietary lead (Pb), a common environmental co-contaminant, and/or animal density that affects various physiological processes, would influence susceptibility to Cd toxicity in the kidneys and liver of these animals. For 6 weeks, the female bank voles were kept individually or in a group of six and provided with diet containing environmentally relevant concentrations of Cd [<0.1 μg/g (control) and 60 μg/g dry wt] and Pb [<0.2 μg/g (control) and 300 μg/g dry wt] alone or in combination. At the end of exposure period, histopathology and analyses of metallothionein, glutathione and zinc that are linked to a protective effect against Cd toxicity, as well as Cd, Pb, copper, iron and lipid peroxidation were carried out. Histopathological changes in the kidneys (a focal glomerular swelling and proximal tubule degeneration) and liver (a focal hepatocyte swelling, vacuolation and inflammation) occurred exclusively in some bank voles kept in a group and exposed to Cd alone (2/6) or Cd + Pb (4/6). The observed toxicity in grouped bank voles appeared not to be based on altered (1) tissue disposition of Cd and/or Pb, (2) metallothionein, glutathione and zinc concentrations, or (3) tissue copper, iron and lipid peroxidation. The data indicate that high population density in combination with environmental Pb may be responsible for an increased susceptibility to Cd toxicity observed in bank voles free living in a contaminated environment; the mechanism by which animal density affects Cd toxicity deserves further study.
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Affiliation(s)
- Aneta Salińska
- Institute of Biology, University of Białystok, Świerkowa 20B, 15-950 Białystok, Poland
| | - Tadeusz Włostowski
- Institute of Biology, University of Białystok, Świerkowa 20B, 15-950 Białystok, Poland
| | - Elżbieta Zambrzycka
- Institute of Chemistry, University of Białystok, Hurtowa 1, 15-950 Białystok, Poland
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The integration of depressive behaviors and cardiac dysfunction during an operational measure of depression: investigating the role of negative social experiences in an animal model. Psychosom Med 2012; 74:612-9. [PMID: 22753634 PMCID: PMC3392416 DOI: 10.1097/psy.0b013e31825ca8e5] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE There is a bidirectional association between depression and cardiovascular disease. The neurobiological mechanisms underlying this association may involve an inability to cope with disrupted social bonds. This study investigated in an animal model the integration of depressive behaviors and cardiac dysfunction after a disrupted social bond and during an operational measure of depression, relative to the protective effects of intact social bonds. METHODS Depressive behaviors in the forced swim test and continuous electrocardiographic parameters were measured in 14 adult, female socially monogamous prairie voles (rodents), after 4 weeks of social pairing or isolation. RESULTS After social isolation, animals exhibited (all values are mean ± standard error of the mean; isolated versus paired, respectively) increased heart rate (416 ± 14 versus 370 ± 14 bpm, p < .05) and reduced heart rate variability (3.3 ± 0.2 versus 3.9 ± 0.2 ln(ms(2))). During the forced swim test, isolated animals exhibited greater helpless behavior (immobility = 106 ± 11 versus 63 ± 11 seconds, p < .05), increased heart rate (530 ± 22 versus 447 ± 15 bpm, p < .05), reduced heart rate variability (1.8 ± 0.4 versus 2.7 ± 0.2 ln(ms(2)), p < .05), and increased arrhythmias (arrhythmic burden score = 181 ± 46 versus 28 ± 12, p < .05). CONCLUSIONS The display of depressive behaviors during an operational measure of depression is coupled with increased heart rate, reduced heart rate variability, and increased arrhythmias, indicative of dysfunctional behavioral and physiological stress coping abilities as a function of social isolation. In contrast, social pairing with a sibling is behaviorally protective and cardioprotective. The present results can provide insight into a possible social mechanism underlying the association between depression and cardiovascular disease in humans.
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Chronic social isolation in the prairie vole induces endothelial dysfunction: implications for depression and cardiovascular disease. Physiol Behav 2012; 106:476-84. [PMID: 22469565 DOI: 10.1016/j.physbeh.2012.03.019] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2012] [Accepted: 03/17/2012] [Indexed: 01/07/2023]
Abstract
Humans with depression show impaired endothelium-dependent vasodilation; one recent demonstration of which was in the form of a reduced acetylcholine (ACh)-induced relaxation of adrenergically-precontracted small arteries biopsied from older depressed patients. Results from such uses of ACh in general have been validated as the most predictive marker of endothelium-related cardiovascular diseases. Accordingly, we examined vascular reactivity to ACh in the socially isolated prairie vole, a new animal model relevant to human depression and cardiovascular disease. Thoracic aortas were carefully dissected from female prairie voles after one month of social isolation (versus pairing with a sibling). Only aortas that contracted to the adrenergic agent phenylephrine (PE) and then relaxed to ACh were evaluated. Among those, ACh-induced relaxations were significantly reduced by social isolation (p<0.05), with maximum relaxation reaching only 30% (of PE-induced precontraction) compared to 47% in aortas from paired (control) animals. Experimental removal of the endothelium from an additional set of aortic tissues abolished all ACh relaxations including that difference. In these same tissues, maximally-effective concentrations of the nitric oxide-donor nitroprusside still completely relaxed all PE-induced precontraction of the endothelial-free smooth muscle, and to the same degree in tissues from isolated versus paired animals. Finally, in the absence of PE-induced precontraction ACh did not relax but rather contracted aortic tissues, and to a significantly greater extent in tissues from socially isolated animals if the endothelium was intact (p<0.05). Thus, social isolation in the prairie vole may (1) impair normal release of protective anti-atherosclerotic factors like nitric oxide from the vascular endothelium (without altering the inherent responsiveness of the vascular smooth muscle to such factors) and (2) cause the endothelium to release contracting factors. To our knowledge this is the first demonstration of this phenomenon in an animal model of depression induced solely by social isolation. These findings have implications for understanding mechanisms involved in depression and cardiovascular disease.
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Grippo AJ, Pournajafi-Nazarloo H, Sanzenbacher L, Trahanas DM, McNeal N, Clarke DA, Porges SW, Sue Carter C. Peripheral oxytocin administration buffers autonomic but not behavioral responses to environmental stressors in isolated prairie voles. Stress 2012; 15:149-61. [PMID: 21854168 PMCID: PMC3397123 DOI: 10.3109/10253890.2011.605486] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Negative social experiences such as social stressors and isolation influence mental and physical illnesses, including affective disorders and heart disease. Studies focused on socially monogamous prairie voles can provide insight into neurobiological systems that underlie the consequences of negative social interactions. Female prairie voles were exposed to 28 days of social isolation or pairing with a female sibling (control). Voles were administered daily oxytocin [20 μg/50 μl, subcutaneous (sc)] or saline vehicle (50 μl, sc) for 14 days and exposed to two behavioral stressors [elevated plus maze (EPM) and resident-intruder test]. Brain tissue was collected for analysis of central peptide levels in the hypothalamic paraventricular nucleus (PVN). Isolation produced autonomic changes [increased heart rate (HR) and decreased HR variability) during both acute stressors and increased anxiety behaviors in the EPM. Oxytocin injection prevented the autonomic consequences of the acute stressors in isolated prairie voles, but did not affect the behaviors tested under the present conditions. Oxytocin had no effect on the behavioral or autonomic responsiveness in paired prairie voles. Oxytocin injection may exert a beneficial effect on autonomic responses to stressors in isolated animals through increasing the number of oxytocin-containing neurons and decreasing the number of corticotropin-releasing hormone-containing neurons in the PVN. Oxytocinergic mechanisms may serve to compensate for autonomic responses associated with chronic isolation and exposure to both social and non-social acute stressors.
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Affiliation(s)
- Angela J Grippo
- Department of Psychology, Northern Illinois University, DeKalb, IL 60115, USA.
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Grippo AJ. The Utility of Animal Models in Understanding Links between Psychosocial Processes and Cardiovascular Health. SOCIAL AND PERSONALITY PSYCHOLOGY COMPASS 2011; 5:164-179. [PMID: 21949540 PMCID: PMC3178448 DOI: 10.1111/j.1751-9004.2011.00342.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A bidirectional association between mood disorders and cardiovascular disease has been described; however, the neurobiological mechanisms that underlie this link have not been fully elucidated. The purpose of this review is first to describe some of the important behavioral neurobiological processes that are common to both mood and cardiovascular disorders. Second, this review focuses on the value of conducting research with animal models (primarily rodents) to investigate potential behavioral, physiological, and neural processes involved in the association of mood disorders and cardiovascular disease. In combination with findings from human research, the study of mechanisms underlying mood and cardiovascular regulation using animal models will enhance our understanding of the association of depression and cardiovascular disease, and can promote the development of novel interventions for individuals with these comorbid conditions.
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Affiliation(s)
- Angela J. Grippo
- Department of Psychology, Northern Illinois University, DeKalb, IL 60115, USA
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