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Brooks J, Maeda T, Ringhofer M, Yamamoto S. Oxytocin homogenizes horse group organization. iScience 2024; 27:110356. [PMID: 39071893 PMCID: PMC11277748 DOI: 10.1016/j.isci.2024.110356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Revised: 05/17/2024] [Accepted: 06/20/2024] [Indexed: 07/30/2024] Open
Abstract
The oxytocinergic system has been suggested to make up an important part of the endocrine basis of group cohesion. However, controlled studies in open-group settings have not been performed. We here investigated the impact of exogenous intranasal oxytocin on the group-level social organization of 5 groups of horses (N = 58; 12 mares and 46 geldings) through GPS tracking and social network analysis. We find oxytocin flattened social differentiation across levels. Most strikingly, oxytocin did not simply reinforce existing bonds but selectively shifted social preferences toward homogenization - individuals and pairs who otherwise rarely associated spent more time close together, while individuals and pairs with the highest baseline association instead spent more time further apart. This resulted in a more distributed structure and lower clustering coefficient at the network level. These effects reinforce and extend oxytocin's role in collective behavior, social organization, and the evolution of group-based sociality across taxa.
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Affiliation(s)
- James Brooks
- Institute for Advanced Study, Kyoto University, Kyoto, Japan
- Wildlife Research Center, Kyoto University, Kyoto, Japan
| | - Tamao Maeda
- Wildlife Research Center, Kyoto University, Kyoto, Japan
- Research Center for Integrative Evolutionary Science, The Graduate University of Advanced Science (SOKENDAI), Hayama, Japan
| | - Monamie Ringhofer
- Department of Animal Sciences, Teikyo University of Science, Tokyo, Japan
| | - Shinya Yamamoto
- Institute for Advanced Study, Kyoto University, Kyoto, Japan
- Wildlife Research Center, Kyoto University, Kyoto, Japan
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2
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Chadaeva I, Kozhemyakina R, Shikhevich S, Bogomolov A, Kondratyuk E, Oshchepkov D, Orlov YL, Markel AL. A Principal Components Analysis and Functional Annotation of Differentially Expressed Genes in Brain Regions of Gray Rats Selected for Tame or Aggressive Behavior. Int J Mol Sci 2024; 25:4613. [PMID: 38731836 PMCID: PMC11083694 DOI: 10.3390/ijms25094613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Revised: 04/18/2024] [Accepted: 04/19/2024] [Indexed: 05/13/2024] Open
Abstract
The process of domestication, despite its short duration as it compared with the time scale of the natural evolutionary process, has caused rapid and substantial changes in the phenotype of domestic animal species. Nonetheless, the genetic mechanisms underlying these changes remain poorly understood. The present study deals with an analysis of the transcriptomes from four brain regions of gray rats (Rattus norvegicus), serving as an experimental model object of domestication. We compared gene expression profiles in the hypothalamus, hippocampus, periaqueductal gray matter, and the midbrain tegmental region between tame domesticated and aggressive gray rats and revealed subdivisions of differentially expressed genes by principal components analysis that explain the main part of differentially gene expression variance. Functional analysis (in the DAVID (Database for Annotation, Visualization and Integrated Discovery) Bioinformatics Resources database) of the differentially expressed genes allowed us to identify and describe the key biological processes that can participate in the formation of the different behavioral patterns seen in the two groups of gray rats. Using the STRING- DB (search tool for recurring instances of neighboring genes) web service, we built a gene association network. The genes engaged in broad network interactions have been identified. Our study offers data on the genes whose expression levels change in response to artificial selection for behavior during animal domestication.
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Affiliation(s)
- Irina Chadaeva
- Institute of Cytology and Genetics SB RAS, Novosibirsk 630090, Russia
| | | | | | - Anton Bogomolov
- Institute of Cytology and Genetics SB RAS, Novosibirsk 630090, Russia
- Department of Natural Sciences, Novosibirsk State University, Novosibirsk 630090, Russia
| | - Ekaterina Kondratyuk
- Institute of Cytology and Genetics SB RAS, Novosibirsk 630090, Russia
- Siberian Federal Scientific Centre of Agro-BioTechnologies, Russian Academy of Sciences, Krasnoobsk 630501, Russia
- Research Institute of Clinical and Experimental Lymphology-Branch of Institute of Cytology and Genetics, Novosibirsk 630117, Russia
| | - Dmitry Oshchepkov
- Institute of Cytology and Genetics SB RAS, Novosibirsk 630090, Russia
- Department of Natural Sciences, Novosibirsk State University, Novosibirsk 630090, Russia
| | - Yuriy L Orlov
- Institute of Biodesign and Complex Systems Modeling, Sechenov First Moscow State Medical University (Sechenov University), Moscow 119991, Russia
- Agrarian and Technological Institute, Peoples' Friendship University of Russia, Moscow 117198, Russia
| | - Arcady L Markel
- Institute of Cytology and Genetics SB RAS, Novosibirsk 630090, Russia
- Department of Natural Sciences, Novosibirsk State University, Novosibirsk 630090, Russia
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3
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Piotrowska D, Potasiewicz A, Popik P, Nikiforuk A. Pro-social and pro-cognitive effects of LIT-001, a novel oxytocin receptor agonist in a neurodevelopmental model of schizophrenia. Eur Neuropsychopharmacol 2024; 78:30-42. [PMID: 37866191 DOI: 10.1016/j.euroneuro.2023.09.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 08/17/2023] [Accepted: 09/25/2023] [Indexed: 10/24/2023]
Abstract
Social and cognitive dysfunctions are the most persistent symptoms of schizophrenia. Since oxytocin (OXT) is known to play a role in social functions and modulates cognitive processes, we investigated the effects of a novel, nonpeptide, selective OXT receptor agonist, LIT-001, in a neurodevelopmental model of schizophrenia. Administration of methylazoxymethanol acetate (MAM; 22 mg/kg) on the 17th day of rat pregnancy is known to cause developmental disturbances of the brain, which lead to schizophrenia-like symptomatology in the offspring. Here, we examined the effects of acutely administered LIT-001 (1, 3, and 10 mg/kg) in MAM-exposed males and females on social behaviour, communication and cognition. We report that MAM-treated adult male and female rats displayed reduced social behaviour, ultrasonic communication and novel object recognition test performance. LIT-001 partially reversed these deficits, increasing the total social interaction time and the number of 'positive', highly-modulated 50 kHz ultrasonic calls in male rats. The compound ameliorated MAM-induced deficits in object discrimination in both sexes. Present results confirm the pro-social activity of LIT-001 and demonstrate its pro-cognitive effects following acute administration.
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Affiliation(s)
- Diana Piotrowska
- Department of Behavioural Neuroscience and Drug Development, Maj Institute of Pharmacology, Polish Academy of Sciences, Krakow, Poland.
| | - Agnieszka Potasiewicz
- Department of Behavioural Neuroscience and Drug Development, Maj Institute of Pharmacology, Polish Academy of Sciences, Krakow, Poland
| | - Piotr Popik
- Department of Behavioural Neuroscience and Drug Development, Maj Institute of Pharmacology, Polish Academy of Sciences, Krakow, Poland
| | - Agnieszka Nikiforuk
- Department of Behavioural Neuroscience and Drug Development, Maj Institute of Pharmacology, Polish Academy of Sciences, Krakow, Poland
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4
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Chadaeva IV, Filonov SV, Zolotareva KA, Khandaev BM, Ershov NI, Podkolodnyy NL, Kozhemyakina RV, Rasskazov DA, Bogomolov AG, Kondratyuk EY, Klimova NV, Shikhevich SG, Ryazanova MA, Fedoseeva LA, Redina ОЕ, Kozhevnikova OS, Stefanova NA, Kolosova NG, Markel AL, Ponomarenko MP, Oshchepkov DY. RatDEGdb: a knowledge base of differentially expressed genes in the rat as a model object in biomedical research. Vavilovskii Zhurnal Genet Selektsii 2023; 27:794-806. [PMID: 38213701 PMCID: PMC10777291 DOI: 10.18699/vjgb-23-92] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 09/11/2023] [Accepted: 09/15/2023] [Indexed: 01/13/2024] Open
Abstract
The animal models used in biomedical research cover virtually every human disease. RatDEGdb, a knowledge base of the differentially expressed genes (DEGs) of the rat as a model object in biomedical research is a collection of published data on gene expression in rat strains simulating arterial hypertension, age-related diseases, psychopathological conditions and other human afflictions. The current release contains information on 25,101 DEGs representing 14,320 unique rat genes that change transcription levels in 21 tissues of 10 genetic rat strains used as models of 11 human diseases based on 45 original scientific papers. RatDEGdb is novel in that, unlike any other biomedical database, it offers the manually curated annotations of DEGs in model rats with the use of independent clinical data on equal changes in the expression of homologous genes revealed in people with pathologies. The rat DEGs put in RatDEGdb were annotated with equal changes in the expression of their human homologs in affected people. In its current release, RatDEGdb contains 94,873 such annotations for 321 human genes in 836 diseases based on 959 original scientific papers found in the current PubMed. RatDEGdb may be interesting first of all to human geneticists, molecular biologists, clinical physicians, genetic advisors as well as experts in biopharmaceutics, bioinformatics and personalized genomics. RatDEGdb is publicly available at https://www.sysbio.ru/RatDEGdb.
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Affiliation(s)
- I V Chadaeva
- Institute of Cytology and Genetics of the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - S V Filonov
- Institute of Cytology and Genetics of the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia Novosibirsk State University, Novosibirsk, Russia
| | - K A Zolotareva
- Institute of Cytology and Genetics of the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - B M Khandaev
- Institute of Cytology and Genetics of the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - N I Ershov
- Institute of Cytology and Genetics of the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - N L Podkolodnyy
- Institute of Cytology and Genetics of the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia Novosibirsk State University, Novosibirsk, Russia
| | - R V Kozhemyakina
- Institute of Cytology and Genetics of the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - D A Rasskazov
- Institute of Cytology and Genetics of the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - A G Bogomolov
- Institute of Cytology and Genetics of the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - E Yu Kondratyuk
- Institute of Cytology and Genetics of the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia Siberian Federal Scientific Centre of Agro-BioTechnologies of the Russian Academy of Sciences, Krasnoobsk, Novosibirsk region, Russia
| | - N V Klimova
- Institute of Cytology and Genetics of the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - S G Shikhevich
- Institute of Cytology and Genetics of the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - M A Ryazanova
- Institute of Cytology and Genetics of the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - L A Fedoseeva
- Institute of Cytology and Genetics of the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - О Е Redina
- Institute of Cytology and Genetics of the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - O S Kozhevnikova
- Institute of Cytology and Genetics of the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - N A Stefanova
- Institute of Cytology and Genetics of the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - N G Kolosova
- Institute of Cytology and Genetics of the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - A L Markel
- Institute of Cytology and Genetics of the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia Novosibirsk State University, Novosibirsk, Russia
| | - M P Ponomarenko
- Institute of Cytology and Genetics of the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - D Yu Oshchepkov
- Institute of Cytology and Genetics of the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
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Værøy H, Lahaye E, Dubessy C, Benard M, Nicol M, Cherifi Y, Takhlidjt S, do Rego JL, do Rego JC, Chartrel N, Fetissov SO. Immunoglobulin G is a natural oxytocin carrier which modulates oxytocin receptor signaling: relevance to aggressive behavior in humans. DISCOVER MENTAL HEALTH 2023; 3:21. [PMID: 37983005 PMCID: PMC10587035 DOI: 10.1007/s44192-023-00048-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Accepted: 10/12/2023] [Indexed: 11/21/2023]
Abstract
Oxytocin is a neuropeptide produced mainly in the hypothalamus and secreted in the CNS and blood. In the brain, it plays a major role in promoting social interactions. Here we show that in human plasma about 60% of oxytocin is naturally bound to IgG which modulates oxytocin receptor signaling. Further, we found that IgG of violent aggressive inmates were characterized by lower affinity for oxytocin, causing decreased oxytocin carrier capacity and reduced receptor activation as compared to men from the general population. Moreover, peripheral administration of oxytocin together with human oxytocin-reactive IgG to resident mice in a resident-intruder test, reduced c-fos activation in several brain regions involved in the regulation of aggressive/defensive behavior correlating with the attack number and duration. We conclude that IgG is a natural oxytocin carrier protein modulating oxytocin receptor signaling which can be relevant to the biological mechanisms of aggressive behavior.
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Affiliation(s)
- Henning Værøy
- Department of Psychiatric Research, Akershus University Hospital, 1478, Nordbyhagen, Norway.
| | - Emilie Lahaye
- INSERM 1239, Neuroendocrine, Endocrine and Germinal Differentiation and Communication Laboratory, University of Rouen Normandie, 76000, Rouen, France
| | - Christophe Dubessy
- INSERM 1239, Neuroendocrine, Endocrine and Germinal Differentiation and Communication Laboratory, University of Rouen Normandie, 76000, Rouen, France
- INSERM US51, CNRS UAR 2026, Imagine Platform PRIMACEN- HeRacLeS, Institute for Research and Innovation in Biomedicine (IRIB), University of Rouen Normandie, 76000, Rouen, France
| | - Magalie Benard
- INSERM US51, CNRS UAR 2026, Imagine Platform PRIMACEN- HeRacLeS, Institute for Research and Innovation in Biomedicine (IRIB), University of Rouen Normandie, 76000, Rouen, France
| | - Marion Nicol
- INSERM 1239, Neuroendocrine, Endocrine and Germinal Differentiation and Communication Laboratory, University of Rouen Normandie, 76000, Rouen, France
| | - Yamina Cherifi
- INSERM 1239, Neuroendocrine, Endocrine and Germinal Differentiation and Communication Laboratory, University of Rouen Normandie, 76000, Rouen, France
| | - Saloua Takhlidjt
- INSERM 1239, Neuroendocrine, Endocrine and Germinal Differentiation and Communication Laboratory, University of Rouen Normandie, 76000, Rouen, France
| | - Jean-Luc do Rego
- INSERM US51, CNRS UAR 2026, Behavioral Analysis Platform SCAC-HeRacLeS, Institute for Research and Innovation in Biomedicine (IRIB), University of Rouen Normandie, 76000, Rouen, France
| | - Jean-Claude do Rego
- INSERM US51, CNRS UAR 2026, Behavioral Analysis Platform SCAC-HeRacLeS, Institute for Research and Innovation in Biomedicine (IRIB), University of Rouen Normandie, 76000, Rouen, France
| | - Nicolas Chartrel
- INSERM 1239, Neuroendocrine, Endocrine and Germinal Differentiation and Communication Laboratory, University of Rouen Normandie, 76000, Rouen, France
| | - Sergueï O Fetissov
- INSERM 1239, Neuroendocrine, Endocrine and Germinal Differentiation and Communication Laboratory, University of Rouen Normandie, 76000, Rouen, France.
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Brooks J, Kano F, Kawaguchi Y, Yamamoto S. Oxytocin promotes species-relevant outgroup attention in bonobos and chimpanzees. Horm Behav 2022; 143:105182. [PMID: 35537292 DOI: 10.1016/j.yhbeh.2022.105182] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 04/20/2022] [Accepted: 04/22/2022] [Indexed: 11/30/2022]
Abstract
Previous research has found that oxytocin (OT) is associated with intergroup behaviour in humans as well as wild chimpanzees, and that exogenous OT affects Pan social attention. The two Pan species, bonobos and chimpanzees, differ drastically from one another in their intensity of intergroup competition, with lethal intergroup aggression often led by males in chimpanzees and more tolerant associations often centered around females in bonobos. However, it remains unclear how exogenous OT changes the two species' responses to ingroup and outgroup individuals. In this study, after intranasal administration of nebulized OT or placebo control, chimpanzees and bonobos viewed image pairs of ingroup and outgroup conspecifics while their eye movements were tracked with an eye-tracker. Although the overall effect of OT was small, we found that OT shifted bonobos' and chimpanzees' attention to outgroup images of the sex primarily involved in intergroup encounters in each species. Specifically, OT selectively shifted attention towards outgroup photos of female conspecifics in bonobos, and those of outgroup male conspecifics in chimpanzees. This suggests that OT generally promotes outgroup attention in both bonobos and chimpanzees but this effect is restricted to the sex most relevant in intergroup relations. These results suggest that, although OT may have a generally conserved role in hominid intergroup behaviour, it may act in species-relevant ways under the influence of their socio-ecological backgrounds.
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Affiliation(s)
- James Brooks
- Wildlife Research Center, Kyoto University, 6068203 Kyoto, Japan; Kumamoto Sanctuary, Kyoto University, 8693201 Kumamoto, Japan.
| | - Fumihiro Kano
- Kumamoto Sanctuary, Kyoto University, 8693201 Kumamoto, Japan; Center for the Advanced Study of Collective Behaviour, University of Konstanz, 78464 Konstanz, Germany; Max-Planck Institute of Animal Behavior, 78315 Radolfzell, Germany.
| | - Yuri Kawaguchi
- Messerli Research Institute, University of Veterinary Medicine Vienna, A-1210 Vienna, Austria; Japan Society for the Promotion of Science (JSPS), 1020083 Tokyo, Japan; Primate Research Institute, Kyoto University, 4848506 Inuyama, Japan
| | - Shinya Yamamoto
- Wildlife Research Center, Kyoto University, 6068203 Kyoto, Japan; Insitute for Advanced Study, Kyoto University, 6068501 Kyoto, Japan
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Moskaliuk VS, Kozhemyakina RV, Bazovkina DV, Terenina E, Khomenko TM, Volcho KP, Salakhutdinov NF, Kulikov AV, Naumenko VS, Kulikova E. On an association between fear-induced aggression and striatal-enriched protein tyrosine phosphatase (STEP) in the brain of Norway rats. Pharmacotherapy 2022; 147:112667. [DOI: 10.1016/j.biopha.2022.112667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 01/14/2022] [Accepted: 01/24/2022] [Indexed: 11/28/2022]
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Fear, love, and the origins of canid domestication: An oxytocin hypothesis. COMPREHENSIVE PSYCHONEUROENDOCRINOLOGY 2022; 9:100100. [PMID: 35755921 PMCID: PMC9216449 DOI: 10.1016/j.cpnec.2021.100100] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2021] [Revised: 11/14/2021] [Accepted: 11/14/2021] [Indexed: 12/22/2022] Open
Abstract
The process of dog domestication likely involved at least two functional stages. The initial stage occurred when subpopulations of wolves became synanthropes, benefiting from life nearby or in human environments. The second phase was characterized by the evolution of novel forms of interspecific cooperation and social relationships between humans and dogs. Here, we discuss possible roles of the oxytocin system across these functional stages of domestication. We hypothesize that in early domestication, oxytocin played important roles in attenuating fear and stress associated with human contact. In later domestication, we hypothesize that oxytocin's most critical functions were those associated with affiliative social behavior, social engagement, and cooperation with humans. We outline possible neurobiological changes associated with these processes and present a Siberian fox model of canid domestication in which these predictions can be tested. Lastly, we identify limitations of current studies on the neuroendocrinology of domestication and discuss challenges and opportunities for future research. We propose various roles for oxytocin across canid domestication. In early domestication, oxytocin primarily regulated fear and anxiety toward humans. In late domestication, oxytocin facilitated interspecific social bonds and cooperation. Comparative neurobiology is critical for understanding oxytocin's roles in domestication. Experimentally domesticated Siberian foxes provide a powerful model for these studies.
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Damián JP, de Soto L, Espindola D, Gil J, van Lier E. Intranasal oxytocin affects the stress response to social isolation in sheep. Physiol Behav 2020; 230:113282. [PMID: 33306978 DOI: 10.1016/j.physbeh.2020.113282] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 12/05/2020] [Accepted: 12/07/2020] [Indexed: 12/22/2022]
Abstract
Oxytocin (OT) is a neuropeptide hormone that modulates several social behaviors and can affect the anxiety and stress response. The aim of this study was to determine if administration of intranasal OT affects the stress response to social isolation in sheep. Twenty adult Merino ewes were assigned to two groups; 1) Control group (CG, n = 10), which received an intranasal administration of isotonic saline and 2) Oxytocin-treated group (OTG, n = 10), which received an intranasal administration of OT (24 IU) 40 min before the animals were placed in the social isolation test. During the social isolation test (10 min), the behavior of the sheep was recorded, and blood samples were obtained before and after the test for the determination of cortisol, glucose and serum proteins, and heart rate and surface temperature were recorded. The OTG ewes had a higher cortisol concentration (P = 0.04) after social isolation, tended to vocalize more (P = 0.06) during isolation, and tended to have lower globulin concentrations (P = 0.10) than the CG ewes. Contrary to what we expected, the administration of intranasal OT increased the stress response to social isolation in ewes, which was evidenced by endocrine (greater increase in cortisol concentration), physiological (a tendency to present lower concentration of globulins in blood) and behavioral (a tendency to vocalize more) indicators. This study suggests that the administration of intranasal OT increased the stress response to isolation possibly by strengthening the social bond among ewes.
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Affiliation(s)
- Juan Pablo Damián
- Departamento de Biociencias Veterinarias, Unidad de Bioquímica, Facultad de Veterinaria, Universidad de la República, Lasplaces 1550, Montevideo, CP 11600, Uruguay.
| | - Leticia de Soto
- Departamento de Biociencias Veterinarias, Unidad de Bioquímica, Facultad de Veterinaria, Universidad de la República, CENUR Litoral Norte, Salto, Universidad de la República, Rivera 1350, Salto, CP 50000, Uruguay
| | - Delfa Espindola
- Departamento de Biociencias Veterinarias, Unidad de Bioquímica, Facultad de Veterinaria, Universidad de la República, Lasplaces 1550, Montevideo, CP 11600, Uruguay
| | - Jorge Gil
- Laboratorio de Reproducción Animal "Dr. Alfredo Ferraris", CENUR Litoral Norte, Facultad de Veterinaria, EEMAC, Universidad de la República, Ruta 3 km 363, Paysandú, CP 60000, Uruguay
| | - Elize van Lier
- Departamento de Producción Animal y Pasturas, Facultad de Agronomía, Universidad de la República, Avda. Garzón 780, Montevideo, CP 12900, Uruguay; Estación Experimental Facultad de Agronomía Salto, Ruta 31, km 21, Salto, CP 50000, Uruguay
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10
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Kozhemyakina RV, Shikhevich SG, Konoshenko MY, Gulevich RG. Adolescent oxytocin treatment affects resident behavior in aggressive but not tame adult rats. Physiol Behav 2020; 224:113046. [PMID: 32619528 DOI: 10.1016/j.physbeh.2020.113046] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 06/28/2020] [Accepted: 06/30/2020] [Indexed: 11/26/2022]
Abstract
There are indications that exposing adolescent rodents to oxytocin (OT) promotes social activity and reduces anxiety in adulthood. Adult male gray rats selected for elimination and enhancement of the aggressive response to humans, when exposed to OT, showed divergent changes in the resident behavior towards the intruder. It could be assumed that adolescent administration of both OT and antagonist of OT receptor (OTR) would also have different long-term effects on resident behavior and startle reflex in adult aggressive and tame rats. The aim of this work is to study the long-term effects of adolescent administration of both OT and antagonist of OT receptor (OTR) on resident behavior and startle reflex in adult tame and aggressive male gray rats. Starting at the age of 28 days, the animals received nasal applications of 5 μL of oxytocin solution (1 μg / μL) or saline for 5 days (daily). At the age of two months, the acoustic startle amplitude was assessed in two series of 5 acoustic stimuli. The resident-intruder test was performed one week later. Antagonist of OT receptor l-368,899 was administered intraperitoneally (i.p.) once at a dose of 5 mg/kg at the age of 30-33 days. Subsequent startle reflex tests were performed 20 days later, at the age of 50-53 days. A week later, the resident-intruder test was performed on the same rats. The startle amplitude in aggressive rats of the control group (in two series of acoustic stimuli) and those having received saline (in the first series) was larger than in the corresponding tame groups. Oxytocin and saline solutions did not significantly affect the startle amplitude compared to control animals. After saline administration, the attack latency in tame rats was longer than in aggressive rats (P <0.05). Oxytocin treatment caused a prolongation of this period in aggressive males compared with control animals receiving saline solution (P <0.01). In addition, oxytocin administration in aggressive males caused an increase in the time of social behavior, which did not include aggressive and same-sex behavior, as compared with the corresponding control animals (P <0.05). Exogenous oxytocin receptor antagonist (l-368,899) did not affect the startle amplitude and behavior in the resident-intruder test in aggressive and tame male rats. Adolescent OT treatment causes a prolongation of both the attack latency and social behavior in the resident-intruder test in adult aggressive male rats, but does not affect these parameters in tame rats.
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Affiliation(s)
- R V Kozhemyakina
- Laboratory of Evolutionary Genetics, Institute of Cytology and Genetics, Siberian Branch, Russian Academy of Sciences, 10 Lavrent'ev Ave, Novosibirsk 630090, Russia.
| | - S G Shikhevich
- Laboratory of Evolutionary Genetics, Institute of Cytology and Genetics, Siberian Branch, Russian Academy of Sciences, 10 Lavrent'ev Ave, Novosibirsk 630090, Russia.
| | - M Yu Konoshenko
- Institute of Chemical Biology and Fundamental Medicine, Novosibirsk, Russia.
| | - R G Gulevich
- Laboratory of Evolutionary Genetics, Institute of Cytology and Genetics, Siberian Branch, Russian Academy of Sciences, 10 Lavrent'ev Ave, Novosibirsk 630090, Russia.
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Anpilov S, Shemesh Y, Eren N, Harony-Nicolas H, Benjamin A, Dine J, Oliveira VEM, Forkosh O, Karamihalev S, Hüttl RE, Feldman N, Berger R, Dagan A, Chen G, Neumann ID, Wagner S, Yizhar O, Chen A. Wireless Optogenetic Stimulation of Oxytocin Neurons in a Semi-natural Setup Dynamically Elevates Both Pro-social and Agonistic Behaviors. Neuron 2020; 107:644-655.e7. [PMID: 32544386 PMCID: PMC7447984 DOI: 10.1016/j.neuron.2020.05.028] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 05/06/2020] [Accepted: 05/20/2020] [Indexed: 12/11/2022]
Abstract
Complex behavioral phenotyping techniques are becoming more prevalent in the field of behavioral neuroscience, and thus methods for manipulating neuronal activity must be adapted to fit into such paradigms. Here, we present a head-mounted, magnetically activated device for wireless optogenetic manipulation that is compact, simple to construct, and suitable for use in group-living mice in an enriched semi-natural arena over several days. Using this device, we demonstrate that repeated activation of oxytocin neurons in male mice can have different effects on pro-social and agonistic behaviors, depending on the social context. Our findings support the social salience hypothesis of oxytocin and emphasize the importance of the environment in the study of social neuromodulators. Our wireless optogenetic device can be easily adapted for use in a variety of behavioral paradigms, which are normally hindered by tethered light delivery or a limited environment. A small, wireless device is used for optogenetic activation in a complex environment PVN oxytocin neurons were activated repeatedly over 2 days in a group setting Repeated activation in a group setting elicited both pro-social and agonistic behavior Findings support the social salience hypothesis of oxytocin neuro-modulation
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Affiliation(s)
- Sergey Anpilov
- Department of Neurobiology, Weizmann Institute of Science, Rehovot 7610001, Israel; Department of Stress Neurobiology and Neurogenetics, Max Planck Institute of Psychiatry, Munich 80804, Germany
| | - Yair Shemesh
- Department of Neurobiology, Weizmann Institute of Science, Rehovot 7610001, Israel; Department of Stress Neurobiology and Neurogenetics, Max Planck Institute of Psychiatry, Munich 80804, Germany
| | - Noa Eren
- Department of Neurobiology, Weizmann Institute of Science, Rehovot 7610001, Israel; Department of Stress Neurobiology and Neurogenetics, Max Planck Institute of Psychiatry, Munich 80804, Germany
| | - Hala Harony-Nicolas
- Sagol Department of Neurobiology, University of Haifa, Haifa 3498838, Israel
| | - Asaf Benjamin
- Department of Neurobiology, Weizmann Institute of Science, Rehovot 7610001, Israel; Department of Stress Neurobiology and Neurogenetics, Max Planck Institute of Psychiatry, Munich 80804, Germany
| | - Julien Dine
- Department of Neurobiology, Weizmann Institute of Science, Rehovot 7610001, Israel; Department of Stress Neurobiology and Neurogenetics, Max Planck Institute of Psychiatry, Munich 80804, Germany
| | - Vinícius E M Oliveira
- Department of Behavioural and Molecular Neurobiology, Regensburg Center of Neuroscience, University of Regensburg, Regensburg 93053, Germany
| | - Oren Forkosh
- Department of Neurobiology, Weizmann Institute of Science, Rehovot 7610001, Israel; Department of Stress Neurobiology and Neurogenetics, Max Planck Institute of Psychiatry, Munich 80804, Germany
| | - Stoyo Karamihalev
- Department of Neurobiology, Weizmann Institute of Science, Rehovot 7610001, Israel; Department of Stress Neurobiology and Neurogenetics, Max Planck Institute of Psychiatry, Munich 80804, Germany
| | - Rosa-Eva Hüttl
- Department of Neurobiology, Weizmann Institute of Science, Rehovot 7610001, Israel; Department of Stress Neurobiology and Neurogenetics, Max Planck Institute of Psychiatry, Munich 80804, Germany
| | - Noa Feldman
- Department of Neurobiology, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Ryan Berger
- Department of Neurobiology, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Avi Dagan
- Department of Neurobiology, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Gal Chen
- Department of Neurobiology, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Inga D Neumann
- Department of Behavioural and Molecular Neurobiology, Regensburg Center of Neuroscience, University of Regensburg, Regensburg 93053, Germany
| | - Shlomo Wagner
- Sagol Department of Neurobiology, University of Haifa, Haifa 3498838, Israel
| | - Ofer Yizhar
- Department of Neurobiology, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Alon Chen
- Department of Neurobiology, Weizmann Institute of Science, Rehovot 7610001, Israel; Department of Stress Neurobiology and Neurogenetics, Max Planck Institute of Psychiatry, Munich 80804, Germany.
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Ilchibaeva TV, Tsybko AS, Kondaurova EM, Kovetskaya AI, Kozhemyakina RV, Naumenko VS. Expression Patterns of Serotonin Receptors 1А and 7 in the Brain of Rats with Genetically Determined Fear-Induced Aggressive Behavior or the Lack of Aggression. NEUROCHEM J+ 2020. [DOI: 10.1134/s1819712420020051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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