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Ayayee PA, Wong RY. Zebrafish ( Danio rerio) behavioral phenotypes not underscored by different gut microbiota. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.05.29.596447. [PMID: 38853862 PMCID: PMC11160693 DOI: 10.1101/2024.05.29.596447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2024]
Abstract
Different animal behavioral phenotypes maintained and selectively bred over multiple generations may be underscored by dissimilar gut microbial community compositions or not have any significant dissimilarity in community composition. Operating within the microbiota-gut-brain axis framework, we anticipated differences in gut microbiome profiles between zebrafish (Danio rerio) selectively bred to display the bold and shy personality types. This would highlight gut microbe-mediated effects on host behavior. To this end, we amplified and sequenced a fragment of the 16S rRNA gene from the guts of bold and shy zebrafish individuals (n=10) via Miseq. We uncovered no significant difference in within-group microbial diversity nor between-group microbial community composition of the two behavioral phenotypes. Interestingly, though not statistically different, we determined that the gut microbial community of the bold phenotype was dominated by Burkholderiaceae, Micropepsaceae, and Propionibacteriaceae. In contrast, the shy phenotype was dominated by Beijerinckaceae, Pirelullacaeae, Rhizobiales_Incertis_Sedis, and Rubinishaeraceae. The absence of any significant difference in gut microbiota profiles between the two phenotypes would suggest that in this species, there might exist a stable "core" gut microbiome, regardless of behavioral phenotypes, and or possibly, a limited role for the gut microbiota in modulating this selected-for host behavior. This is the first study to characterize the gut microbial community of distinct innate behavioral phenotypes of the zebrafish (that are not considered dysbiotic states) and not rely on antibiotic or probiotic treatments to induce changes in behavior. Such studies are crucial to our understanding of the modulating impacts of the gut microbiome on normative animal behavior.
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Affiliation(s)
- Paul A Ayayee
- Department of Biology, University of Nebraska at Omaha, Omaha, NE, USA
| | - Ryan Y Wong
- Department of Biology, University of Nebraska at Omaha, Omaha, NE, USA
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Bhattacharjee D, Guðjónsdóttir AR, Chova PE, Middelburg E, Jäckels J, de Groot NG, Wallner B, Massen JJ, Pflüger LS. Behavioral, physiological, and genetic drivers of coping in a non-human primate. iScience 2024; 27:108890. [PMID: 38318385 PMCID: PMC10838955 DOI: 10.1016/j.isci.2024.108890] [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: 09/19/2023] [Revised: 11/17/2023] [Accepted: 01/09/2024] [Indexed: 02/07/2024] Open
Abstract
Animals experience stressful situations, from predation to social conflicts, but mostly deal with them successfully. This adaptive mechanism, coping, reduces the adverse effects of stressors, and its failure may result in reduced fitness. Substantial inter-individual variation in coping is observed, yet little is known about how behavioral, physiological and genetic drivers regulate coping holistically and contribute to such variations. We assessed behavioral coping styles (n=30), emotional arousal (n=12), and personalities (n=32) of long-tailed macaques (Macaca fascicularis) and also investigated the association of coping with a valine/methionine polymorphism encoded by a critical human stress regulatory gene, catechol-O-methyltransferase (COMT) (n=26). Personality and the human equivalent COMT Val/Met polymorphism were associated with "nonaggression-based" and "aggression-based" coping styles. Compared to nonaggression-based, aggression-based copers maintained higher average facial temperatures, indicating potentially lower emotional arousal, as measured using infrared thermography. These findings demonstrate a complex interplay of various proximate mechanisms governing coping in a non-human primate.
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Affiliation(s)
- Debottam Bhattacharjee
- Animal Behaviour and Cognition, Department of Biology, Utrecht University, Padualaan 8, 3584 CH Utrecht, the Netherlands
- Department of Infectious Diseases and Public Health, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, 31 To Yuen Street, Hong Kong SAR, China
- Centre for Animal Health and Welfare, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, 31 To Yuen Street, Hong Kong SAR, China
| | - Aníta Rut Guðjónsdóttir
- Animal Behaviour and Cognition, Department of Biology, Utrecht University, Padualaan 8, 3584 CH Utrecht, the Netherlands
| | - Paula Escriche Chova
- Animal Behaviour and Cognition, Department of Biology, Utrecht University, Padualaan 8, 3584 CH Utrecht, the Netherlands
| | - Esmee Middelburg
- Animal Behaviour and Cognition, Department of Biology, Utrecht University, Padualaan 8, 3584 CH Utrecht, the Netherlands
| | - Jana Jäckels
- Department of Behavioral and Cognitive Biology, University of Vienna, Djerassiplatz 1, 1030 Vienna, Austria
- Department of Evolutionary Anthropology, University of Vienna, Djerassiplatz 1, 1030 Vienna, Austria
| | - Natasja G. de Groot
- Department of Comparative Genetics & Refinement, Biomedical Primate Research Centre, 2288 GJ Rijswijk, the Netherlands
| | - Bernard Wallner
- Department of Evolutionary Anthropology, University of Vienna, Djerassiplatz 1, 1030 Vienna, Austria
- Austrian Research Center for Primatology, Ossiach 16, 9570 Ossiach, Austria
| | - Jorg J.M. Massen
- Animal Behaviour and Cognition, Department of Biology, Utrecht University, Padualaan 8, 3584 CH Utrecht, the Netherlands
- Austrian Research Center for Primatology, Ossiach 16, 9570 Ossiach, Austria
| | - Lena S. Pflüger
- Department of Behavioral and Cognitive Biology, University of Vienna, Djerassiplatz 1, 1030 Vienna, Austria
- Austrian Research Center for Primatology, Ossiach 16, 9570 Ossiach, Austria
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Zhao Y, Duan M, Lin X, Li W, Liu H, Meng K, Liu F, Hu W, Luo D. Molecular underpinnings underlying behaviors changes in the brain of juvenile common carp (Cyrinus carpio) in response to warming. J Adv Res 2023:S2090-1232(23)00322-3. [PMID: 37956862 DOI: 10.1016/j.jare.2023.10.017] [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: 07/25/2023] [Revised: 10/15/2023] [Accepted: 10/31/2023] [Indexed: 11/15/2023] Open
Abstract
INTRODUCTION Global warming is increasing interest in how aquatic animals can adjust their physiological performance and cope with temperature changes. Therefore, understanding the behavioral changes and molecular underpinnings in fish under warming is crucial for both the individual and groups survival. This could provide experimental evidence and resource for evaluating the impact of global warming. OBJECTIVE Three genetic families of common carp (Cyprinus carpio) were generated. These juveniles were constructed short-term (4 days) and long-term (30 days) warming groups to investigate the effects of warming on behavioral responses and to elucidate the potential underlying mechanisms of warming-driven behavior. METHODS Behavioral tests were used to explore the effects of short- and long-term exposure to warming on the swimming behavior of C. carpio. Brain transcriptome combined with measurement of nervous system activity was used to further investigated the comprehensive neuromolecular mechanisms under warming. RESULTS Long-term warming groups had a more significant impact on the decline of swimming behavior in juvenile C. carpio. Furthermore, brain comparative transcriptomic analysis combined with measurement of nervous system activity revealed that genes involved in cytoskeletal organization, mitochondrial regulation, and energy metabolism are major regulators of behavior in the juvenile under warming. Importantly, especially in the long-term warming groups, enrichment analysis of associated gene expression suggested functional alterations of synaptic transmission and signal transduction leading to swimming function impairment in the central nervous system, as revealed by behavioral tests. CONCLUSIONS Our study provides evidence of the neurogenomic mechanism underlying the decreased swimming activity in juvenile C. carpio under warming. These findings have important implications for understanding the impacts of climate change on aquatic ecosystems and the organisms that inhabit them.
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Affiliation(s)
- Yuanli Zhao
- Key Laboratory of Breeding Biotechnology and Sustainable Aquaculture, Institute of Hydrobiology, The Innovative Academy of Seed Design, Hubei Hongshan Laboratory, Guangdong Laboratory for Lingnan Modern Agriculture, Chinese Academy of Sciences, Wuhan 430072, China
| | - Ming Duan
- Key Laboratory of Breeding Biotechnology and Sustainable Aquaculture, Institute of Hydrobiology, The Innovative Academy of Seed Design, Hubei Hongshan Laboratory, Guangdong Laboratory for Lingnan Modern Agriculture, Chinese Academy of Sciences, Wuhan 430072, China; University of Chinese Academy of Sciences, Beijing 101408, China
| | - Xing Lin
- Key Laboratory of Breeding Biotechnology and Sustainable Aquaculture, Institute of Hydrobiology, The Innovative Academy of Seed Design, Hubei Hongshan Laboratory, Guangdong Laboratory for Lingnan Modern Agriculture, Chinese Academy of Sciences, Wuhan 430072, China; University of Chinese Academy of Sciences, Beijing 101408, China
| | - Weiwei Li
- Key Laboratory of Breeding Biotechnology and Sustainable Aquaculture, Institute of Hydrobiology, The Innovative Academy of Seed Design, Hubei Hongshan Laboratory, Guangdong Laboratory for Lingnan Modern Agriculture, Chinese Academy of Sciences, Wuhan 430072, China; University of Chinese Academy of Sciences, Beijing 101408, China
| | - Hairong Liu
- Key Laboratory of Breeding Biotechnology and Sustainable Aquaculture, Institute of Hydrobiology, The Innovative Academy of Seed Design, Hubei Hongshan Laboratory, Guangdong Laboratory for Lingnan Modern Agriculture, Chinese Academy of Sciences, Wuhan 430072, China
| | - Kaifeng Meng
- Key Laboratory of Breeding Biotechnology and Sustainable Aquaculture, Institute of Hydrobiology, The Innovative Academy of Seed Design, Hubei Hongshan Laboratory, Guangdong Laboratory for Lingnan Modern Agriculture, Chinese Academy of Sciences, Wuhan 430072, China; College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China
| | - Fei Liu
- Key Laboratory of Breeding Biotechnology and Sustainable Aquaculture, Institute of Hydrobiology, The Innovative Academy of Seed Design, Hubei Hongshan Laboratory, Guangdong Laboratory for Lingnan Modern Agriculture, Chinese Academy of Sciences, Wuhan 430072, China
| | - Wei Hu
- Key Laboratory of Breeding Biotechnology and Sustainable Aquaculture, Institute of Hydrobiology, The Innovative Academy of Seed Design, Hubei Hongshan Laboratory, Guangdong Laboratory for Lingnan Modern Agriculture, Chinese Academy of Sciences, Wuhan 430072, China; University of Chinese Academy of Sciences, Beijing 101408, China
| | - Daji Luo
- Key Laboratory of Breeding Biotechnology and Sustainable Aquaculture, Institute of Hydrobiology, The Innovative Academy of Seed Design, Hubei Hongshan Laboratory, Guangdong Laboratory for Lingnan Modern Agriculture, Chinese Academy of Sciences, Wuhan 430072, China; University of Chinese Academy of Sciences, Beijing 101408, China.
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Bresnahan ST, Galbraith D, Ma R, Anton K, Rangel J, Grozinger CM. Beyond conflict: Kinship theory of intragenomic conflict predicts individual variation in altruistic behaviour. Mol Ecol 2023; 32:5823-5837. [PMID: 37746895 DOI: 10.1111/mec.17145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 09/08/2023] [Accepted: 09/11/2023] [Indexed: 09/26/2023]
Abstract
Behavioural variation is essential for animals to adapt to different social and environmental conditions. The Kinship Theory of Intragenomic Conflict (KTIC) predicts that parent-specific alleles can support different behavioural strategies to maximize allele fitness. Previous studies, including in honey bees (Apis mellifera), supported predictions of the KTIC for parent-specific alleles to promote selfish behaviour. Here, we test the KTIC prediction that for altruism-promoting genes (i.e. those that promote behaviours that support the reproductive fitness of kin), the allele with the higher altruism optimum should be selected to be expressed while the other is silenced. In honey bee colonies, workers act altruistically when tending to the queen by performing a 'retinue' behaviour, distributing the queen's mandibular pheromone (QMP) throughout the hive. Workers exposed to QMP do not activate their ovaries, ensuring they care for the queen's brood instead of competing to lay unfertilized eggs. Due to the haplodiploid genetics of honey bees, the KTIC predicts that response to QMP is favoured by the maternal genome. We report evidence for parent-of-origin effects on the retinue response behaviour, ovarian development and gene expression in brains of worker honey bees exposed to QMP, consistent with the KTIC. Additionally, we show enrichment for genes with parent-of-origin expression bias within gene regulatory networks associated with variation in bees' response to QMP. Our study demonstrates that intragenomic conflict can shape diverse social behaviours and influence expression patterns of single genes as well as gene networks.
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Affiliation(s)
- Sean T Bresnahan
- Department of Entomology, Center for Pollinator Research, Huck Institutes of the Life Sciences, Pennsylvania State University, University Park, Pennsylvania, USA
- Intercollege Graduate Degree Program in Molecular, Cellular, and Integrative Biosciences, Huck Institutes of the Life Sciences, Pennsylvania State University, University Park, Pennsylvania, USA
| | - David Galbraith
- Department of Entomology, Center for Pollinator Research, Huck Institutes of the Life Sciences, Pennsylvania State University, University Park, Pennsylvania, USA
| | - Rong Ma
- Department of Entomology, Center for Pollinator Research, Huck Institutes of the Life Sciences, Pennsylvania State University, University Park, Pennsylvania, USA
| | - Kate Anton
- Department of Entomology, Center for Pollinator Research, Huck Institutes of the Life Sciences, Pennsylvania State University, University Park, Pennsylvania, USA
| | - Juliana Rangel
- Department of Entomology, Texas A&M University, College Station, Texas, USA
| | - Christina M Grozinger
- Department of Entomology, Center for Pollinator Research, Huck Institutes of the Life Sciences, Pennsylvania State University, University Park, Pennsylvania, USA
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Tan JK, Nazar FH, Makpol S, Teoh SL. Zebrafish: A Pharmacological Model for Learning and Memory Research. Molecules 2022; 27:7374. [PMID: 36364200 PMCID: PMC9657833 DOI: 10.3390/molecules27217374] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 10/26/2022] [Accepted: 10/27/2022] [Indexed: 08/25/2023] Open
Abstract
Learning and memory are essential to organism survival and are conserved across various species, especially vertebrates. Cognitive studies involving learning and memory require using appropriate model organisms to translate relevant findings to humans. Zebrafish are becoming increasingly popular as one of the animal models for neurodegenerative diseases due to their low maintenance cost, prolific nature and amenability to genetic manipulation. More importantly, zebrafish exhibit a repertoire of neurobehaviors comparable to humans. In this review, we discuss the forms of learning and memory abilities in zebrafish and the tests used to evaluate the neurobehaviors in this species. In addition, the pharmacological studies that used zebrafish as models to screen for the effects of neuroprotective and neurotoxic compounds on cognitive performance will be summarized here. Lastly, we discuss the challenges and perspectives in establishing zebrafish as a robust model for cognitive research involving learning and memory. Zebrafish are becoming an indispensable model in learning and memory research for screening neuroprotective agents against cognitive impairment.
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Affiliation(s)
- Jen Kit Tan
- Department of Biochemistry, Faculty of Medicine, Universiti Kebangsaan Malaysia (UKM), UKM Medical Center, Kuala Lumpur 56000, Malaysia
| | - Faris Hazwan Nazar
- Department of Biochemistry, Faculty of Medicine, Universiti Kebangsaan Malaysia (UKM), UKM Medical Center, Kuala Lumpur 56000, Malaysia
| | - Suzana Makpol
- Department of Biochemistry, Faculty of Medicine, Universiti Kebangsaan Malaysia (UKM), UKM Medical Center, Kuala Lumpur 56000, Malaysia
| | - Seong Lin Teoh
- Department of Anatomy, Faculty of Medicine, Universiti Kebangsaan Malaysia (UKM), UKM Medical Center, Kuala Lumpur 56000, Malaysia
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6
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Earhart ML, Blanchard TS, Strowbridge N, Bugg WS, Schulte PM. Gene expression and latitudinal variation in the stress response in Fundulus heteroclitus. Comp Biochem Physiol A Mol Integr Physiol 2022; 268:111188. [PMID: 35304270 DOI: 10.1016/j.cbpa.2022.111188] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 03/10/2022] [Accepted: 03/11/2022] [Indexed: 10/18/2022]
Abstract
Atlantic killifish, Fundulus heteroclitus, are intertidal marsh fish found along the east coast of North America. Associated with the thermal gradient along this coast, northern and southern killifish populations are known to differ in morphology, behavior, and physiology, including in their cortisol stress response. Our goal was to explore population differences in the stress response and identify underlying molecular mechanisms. We measured responses to both acute and repeated stress in plasma cortisol, stress axis mRNA expression, and body condition in northern and southern killifish. Following an acute stressor, the southern population had higher cortisol levels than the northern population but there was no difference between populations following repeated stress. In the brain, both corticotropin releasing factor and its binding protein had higher expression in the southern than the northern population, but the northern population showed more changes in mRNA levels following a stressor. In the head kidney, Melanocortin 2 Receptor and steroidogenic acute regulatory protein mRNA levels were higher in the southern population suggesting a larger capacity for cortisol synthesis than in the northern fish. Lastly, the glucocorticoid receptor GR1 mRNA levels were greater in the liver of southern fish, suggesting a greater capacity to respond to cortisol, and GR2 had differential expression in the head kidney, suggesting an interpopulation difference in stress axis negative feedback loops. Southern, but not northern, fish were able to maintain body condition following stress, suggesting that these differences in the stress response may be important for adaptation across latitudes.
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Affiliation(s)
- Madison L Earhart
- Department of Zoology, University of British Columba, Vancouver, Canada.
| | - Tessa S Blanchard
- Department of Zoology, University of British Columba, Vancouver, Canada
| | - Nicholas Strowbridge
- Department of Zoology, University of British Columba, Vancouver, Canada; Institute of Biodiversity, Animal Health & Comparative Medicine, College of Medical, Veterinary & Life Sciences, University of Glasglow, Glasglow, UK
| | - William S Bugg
- Department of Zoology, University of British Columba, Vancouver, Canada; Department of Biological Sciences, University of Manitoba, Winnipeg, Canada
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Gururajan A, Bastiaanssen TFS, Ventura Silva AP, Moloney GM, Cryan JF. The impact of psychosocial defeat stress on the bed nucleus of the stria terminalis transcriptome in adult male mice. Eur J Neurosci 2021; 55:67-77. [PMID: 34904308 DOI: 10.1111/ejn.15567] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2021] [Revised: 11/07/2021] [Accepted: 12/05/2021] [Indexed: 01/07/2023]
Abstract
The bed nucleus of the stria terminalis (BNST) is a focal point for the convergence of inputs from canonical stress-sensitive structures to fine-tune the response to stress. However, its role in mediating phenotypes of stress resilience or susceptibility is yet to be fully defined. In this study, we carried out unbiased RNA-sequencing to analyse the BNST transcriptomes of adult male mice, which were classified as resilient or susceptible following a 10-day chronic psychosocial defeat stress paradigm. Pairwise comparisons revealed 20 differentially expressed genes in resilience (6) and susceptible (14) mice compared with controls. An in silico validation of our data against an earlier study revealed significant concordance in gene expression profiles associated with resilience to chronic stress. Enrichment analysis revealed that resilience is linked to functions including retinoic acid hydrolase activity, phospholipase inhibitor and tumour necrosis factor (TNF)-receptor activities, whereas susceptibility is linked to alterations in amino acid transporter activity. We also identified differential usage of 134 exons across 103 genes associated with resilience and susceptibility; enrichment analysis for genes with differential exon usage in resilient mice was linked to functions including adrenergic receptor binding mice and oxysterol binding in susceptible mice. Our findings highlight the important and underappreciated role of the BNST in stress resilience and susceptibility and reveal research avenues for follow-up investigations.
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Affiliation(s)
- Anand Gururajan
- Department of Anatomy and Neuroscience, University College Cork, Cork, Ireland.,APC Microbiome Ireland, University College Cork, Cork, Ireland.,School of Psychology, Faculty of Science, University of Sydney, Sydney, New South Wales, Australia
| | - Thomaz F S Bastiaanssen
- Department of Anatomy and Neuroscience, University College Cork, Cork, Ireland.,APC Microbiome Ireland, University College Cork, Cork, Ireland
| | - Ana Paula Ventura Silva
- Department of Anatomy and Neuroscience, University College Cork, Cork, Ireland.,APC Microbiome Ireland, University College Cork, Cork, Ireland
| | - Gerard M Moloney
- Department of Anatomy and Neuroscience, University College Cork, Cork, Ireland.,APC Microbiome Ireland, University College Cork, Cork, Ireland
| | - John F Cryan
- Department of Anatomy and Neuroscience, University College Cork, Cork, Ireland.,APC Microbiome Ireland, University College Cork, Cork, Ireland
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Kabelik D, Julien AR, Ramirez D, O'Connell LA. Social boldness correlates with brain gene expression in male green anoles. Horm Behav 2021; 133:105007. [PMID: 34102460 PMCID: PMC8277760 DOI: 10.1016/j.yhbeh.2021.105007] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 05/01/2021] [Accepted: 05/22/2021] [Indexed: 11/27/2022]
Abstract
Within populations, some individuals tend to exhibit a bold or shy social behavior phenotype relative to the mean. The neural underpinnings of these differing phenotypes - also described as syndromes, personalities, and coping styles - is an area of ongoing investigation. Although a social decision-making network has been described across vertebrate taxa, most studies examining activity within this network do so in relation to exhibited differences in behavioral expression. Our study instead focuses on constitutive gene expression in bold and shy individuals by isolating baseline gene expression profiles that influence social boldness predisposition, rather than those reflecting the results of social interaction and behavioral execution. We performed this study on male green anole lizards (Anolis carolinensis), an established model organism for behavioral research, which provides a crucial comparison group to investigations of birds and mammals. After identifying subjects as bold or shy through repeated reproductive and agonistic behavior testing, we used RNA sequencing to compare gene expression profiles between these groups within various forebrain, midbrain, and hindbrain regions. The ventromedial hypothalamus had the largest group differences in gene expression, with bold males having increased expression of neuroendocrine and neurotransmitter receptor and calcium channel genes compared to shy males. Conversely, shy males express more integrin alpha-10 in the majority of examined regions. There were no significant group differences in physiology or hormone levels. Our results highlight the ventromedial hypothalamus as an important center of behavioral differences across individuals and provide novel candidates for investigations into the regulation of individual variation in social behavior phenotype.
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Affiliation(s)
- David Kabelik
- Department of Biology & Program in Neuroscience, Rhodes College, Memphis, TN 38112, USA.
| | - Allison R Julien
- Department of Biology & Program in Neuroscience, Rhodes College, Memphis, TN 38112, USA
| | - Dave Ramirez
- Department of Biology, Stanford University, Stanford, CA 94305, USA
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Baker MR, Wong RY. Npas4a expression in the teleost forebrain is associated with stress coping style differences in fear learning. Sci Rep 2021; 11:12074. [PMID: 34103598 PMCID: PMC8187387 DOI: 10.1038/s41598-021-91495-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Accepted: 05/21/2021] [Indexed: 12/14/2022] Open
Abstract
Learning to anticipate potentially dangerous contexts is an adaptive behavioral response to coping with stressors. An animal's stress coping style (e.g. proactive-reactive axis) is known to influence how it encodes salient events. However, the neural and molecular mechanisms underlying these stress coping style differences in learning are unknown. Further, while a number of neuroplasticity-related genes have been associated with alternative stress coping styles, it is unclear if these genes may bias the development of conditioned behavioral responses to stressful stimuli, and if so, which brain regions are involved. Here, we trained adult zebrafish to associate a naturally aversive olfactory cue with a given context. Next, we investigated if expression of two neural plasticity and neurotransmission-related genes (npas4a and gabbr1a) were associated with the contextual fear conditioning differences between proactive and reactive stress coping styles. Reactive zebrafish developed a stronger conditioned fear response and showed significantly higher npas4a expression in the medial and lateral zones of the dorsal telencephalon (Dm, Dl), and the supracommissural nucleus of the ventral telencephalon (Vs). Our findings suggest that the expression of activity-dependent genes like npas4a may be differentially expressed across several interconnected forebrain regions in response to fearful stimuli and promote biases in fear learning among different stress coping styles.
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Affiliation(s)
- Matthew R Baker
- Department of Biology, University of Nebraska at Omaha, Omaha, USA
| | - Ryan Y Wong
- Department of Biology, University of Nebraska at Omaha, Omaha, USA.
- Department of Psychology, University of Nebraska at Omaha, 6001 Dodge St, Omaha, NE, 68182, USA.
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10
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Krick MV, Desmarais E, Samaras A, Guéret E, Dimitroglou A, Pavlidis M, Tsigenopoulos C, Guinand B. Family-effects in the epigenomic response of red blood cells to a challenge test in the European sea bass (Dicentrarchus labrax, L.). BMC Genomics 2021; 22:111. [PMID: 33563212 PMCID: PMC7871408 DOI: 10.1186/s12864-021-07420-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Accepted: 01/31/2021] [Indexed: 12/13/2022] Open
Abstract
Abstract Background In fish, minimally invasive blood sampling is widely used to monitor physiological stress with blood plasma biomarkers. As fish blood cells are nucleated, they might be a source a potential new markers derived from ‘omics technologies. We modified the epiGBS (epiGenotyping By Sequencing) technique to explore changes in genome-wide cytosine methylation in the red blood cells (RBCs) of challenged European sea bass (Dicentrarchus labrax), a species widely studied in both natural and farmed environments. Results We retrieved 501,108,033 sequencing reads after trimming, with a mean mapping efficiency of 73.0% (unique best hits). Minor changes in RBC methylome appeared to manifest after the challenge test and a family-effect was detected. Only fifty-seven differentially methylated cytosines (DMCs) close to 51 distinct genes distributed on 17 of 24 linkage groups (LGs) were detected between RBCs of pre- and post-challenge individuals. Thirty-seven of these genes were previously reported as differentially expressed in the brain of zebrafish, most of them involved in stress coping differences. While further investigation remains necessary, few DMC-related genes associated to the Brain Derived Neurotrophic Factor, a protein that favors stress adaptation and fear memory, appear relevant to integrate a centrally produced stress response in RBCs. Conclusion Our modified epiGBS protocol was powerful to analyze patterns of cytosine methylation in RBCs of D. labrax and to evaluate the impact of a challenge using minimally invasive blood samples. This study is the first approximation to identify epigenetic biomarkers of exposure to stress in fish. Supplementary Information The online version contains supplementary material available at 10.1186/s12864-021-07420-9.
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Affiliation(s)
- Madoka Vera Krick
- UMR UM CNRS IRD EPHE ISEM- Institut des Sciences de l'Evolution de Montpellier, Montpellier, France
| | - Erick Desmarais
- UMR UM CNRS IRD EPHE ISEM- Institut des Sciences de l'Evolution de Montpellier, Montpellier, France
| | | | - Elise Guéret
- UMR UM CNRS IRD EPHE ISEM- Institut des Sciences de l'Evolution de Montpellier, Montpellier, France.,Univ. Montpellier, CNRS, INSERM, Montpellier, France.,Montpellier GenomiX, France Génomique, Montpellier, France
| | | | - Michalis Pavlidis
- Department of Biology, University of Crete, 70013, Heraklion, Greece
| | - Costas Tsigenopoulos
- Hellenic Centre for Marine Research (HCMR), Institute of Marine Biology, Biotechnology and Aquaculture (IMBBC), 715 00, Heraklion, Greece
| | - Bruno Guinand
- UMR UM CNRS IRD EPHE ISEM- Institut des Sciences de l'Evolution de Montpellier, Montpellier, France.
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Pereira PDC, Henrique EP, Porfírio DM, Crispim CCDS, Campos MTB, de Oliveira RM, Silva IMS, Guerreiro LCF, da Silva TWP, da Silva ADJF, Rosa JBDS, de Azevedo DLF, Lima CGC, Castro de Abreu C, Filho CS, Diniz DLWP, Magalhães NGDM, Guerreiro-Diniz C, Diniz CWP, Diniz DG. Environmental Enrichment Improved Learning and Memory, Increased Telencephalic Cell Proliferation, and Induced Differential Gene Expression in Colossoma macropomum. Front Pharmacol 2020; 11:840. [PMID: 32595498 PMCID: PMC7303308 DOI: 10.3389/fphar.2020.00840] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Accepted: 05/21/2020] [Indexed: 01/06/2023] Open
Abstract
Fish use spatial cognition based on allocentric cues to navigate, but little is known about how environmental enrichment (EE) affects learning and memory in correlation with hematological changes or gene expression in the fish brain. Here we investigated these questions in Colossoma macropomum (Teleostei). Fish were housed for 192 days in either EE or in an impoverished environment (IE) aquarium. EE contained toys, natural plants, and a 12-h/day water stream for voluntary exercise, whereas IE had no toys, plants, or water stream. A third plus maze aquarium was used for spatial and object recognition tests. Compared with IE, the EE fish showed greater learning rates, body length, and body weight. After behavioral tests, whole brain tissue was taken, stored in RNA-later, and then homogenized for DNA sequencing after conversion of isolated RNA. To compare read mapping and gene expression profiles across libraries for neurotranscriptome differential expression, we mapped back RNA-seq reads to the C. macropomum de novo assembled transcriptome. The results showed significant differential behavior, cell counts and gene expression in EE and IE individuals. As compared with IE, we found a greater number of cells in the telencephalon of individuals maintained in EE but no significant difference in the tectum opticum, suggesting differential plasticity in these areas. A total of 107,669 transcripts were found that ultimately yielded 64 differentially expressed transcripts between IE and EE brains. Another group of adult fish growing in aquaculture conditions were either subjected to exercise using running water flow or maintained sedentary. Flow cytometry analysis of peripheral blood showed a significantly higher density of lymphocytes, and platelets but no significant differences in erythrocytes and granulocytes. Thus, under the influence of contrasting environments, our findings showed differential changes at the behavioral, cellular, and molecular levels. We propose that the differential expression of selected transcripts, number of telencephalic cell counts, learning and memory performance, and selective hematological cell changes may be part of Teleostei adaptive physiological responses triggered by EE visuospatial and somatomotor stimulation. Our findings suggest abundant differential gene expression changes depending on environment and provide a basis for exploring gene regulation mechanisms under EE in C. macropomum.
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Affiliation(s)
- Patrick Douglas Corrêa Pereira
- Laboratório de Biologia Molecular e Neuroecologia, Instituto Federal de Educação, Ciência e Tecnologia do Pará, Bragança, Brazil
| | - Ediely Pereira Henrique
- Laboratório de Biologia Molecular e Neuroecologia, Instituto Federal de Educação, Ciência e Tecnologia do Pará, Bragança, Brazil
| | - Danillo Monteiro Porfírio
- Laboratório de Investigação em Neurodegeneração e Infecção, Instituto de Ciências Biológicas, Hospital Universitário João de Barros Barreto, Universidade Federal do Pará, Belém, Brazil
| | | | - Maitê Thaís Barros Campos
- Laboratório de Investigação em Neurodegeneração e Infecção, Instituto de Ciências Biológicas, Hospital Universitário João de Barros Barreto, Universidade Federal do Pará, Belém, Brazil
| | - Renata Melo de Oliveira
- Laboratório de Investigação em Neurodegeneração e Infecção, Instituto de Ciências Biológicas, Hospital Universitário João de Barros Barreto, Universidade Federal do Pará, Belém, Brazil
| | - Isabella Mesquita Sfair Silva
- Laboratório de Investigação em Neurodegeneração e Infecção, Instituto de Ciências Biológicas, Hospital Universitário João de Barros Barreto, Universidade Federal do Pará, Belém, Brazil
| | - Luma Cristina Ferreira Guerreiro
- Laboratório de Investigação em Neurodegeneração e Infecção, Instituto de Ciências Biológicas, Hospital Universitário João de Barros Barreto, Universidade Federal do Pará, Belém, Brazil
| | - Tiago Werley Pires da Silva
- Laboratório de Investigação em Neurodegeneração e Infecção, Instituto de Ciências Biológicas, Hospital Universitário João de Barros Barreto, Universidade Federal do Pará, Belém, Brazil
| | | | - João Batista da Silva Rosa
- Laboratório de Biologia Molecular e Neuroecologia, Instituto Federal de Educação, Ciência e Tecnologia do Pará, Bragança, Brazil
| | | | - Cecília Gabriella Coutinho Lima
- Laboratório de Biologia Molecular e Neuroecologia, Instituto Federal de Educação, Ciência e Tecnologia do Pará, Bragança, Brazil
| | - Cintya Castro de Abreu
- Laboratório de Biologia Molecular e Neuroecologia, Instituto Federal de Educação, Ciência e Tecnologia do Pará, Bragança, Brazil
| | - Carlos Santos Filho
- Laboratório de Biologia Molecular e Neuroecologia, Instituto Federal de Educação, Ciência e Tecnologia do Pará, Bragança, Brazil
| | | | - Nara Gyzely de Morais Magalhães
- Laboratório de Biologia Molecular e Neuroecologia, Instituto Federal de Educação, Ciência e Tecnologia do Pará, Bragança, Brazil
| | - Cristovam Guerreiro-Diniz
- Laboratório de Biologia Molecular e Neuroecologia, Instituto Federal de Educação, Ciência e Tecnologia do Pará, Bragança, Brazil
| | - Cristovam Wanderley Picanço Diniz
- Laboratório de Investigação em Neurodegeneração e Infecção, Instituto de Ciências Biológicas, Hospital Universitário João de Barros Barreto, Universidade Federal do Pará, Belém, Brazil
| | - Daniel Guerreiro Diniz
- Laboratório de Investigação em Neurodegeneração e Infecção, Instituto de Ciências Biológicas, Hospital Universitário João de Barros Barreto, Universidade Federal do Pará, Belém, Brazil
- Laboratório de Microscopia Eletrônica, Instituto Evandro Chagas, Belém, Brazil
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12
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Nouri M, Nasr-Esfahani MH, Tarrahi MJ, Amani R. The Effect of Lycopene Supplementation on Mood Status and Quality of Life in Infertile Men: A Randomized, Double-Blind, Placebo-Controlled Clinical Trial. INTERNATIONAL JOURNAL OF FERTILITY & STERILITY 2020; 14:17-22. [PMID: 32112630 PMCID: PMC7139232 DOI: 10.22074/ijfs.2020.5888] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Accepted: 08/10/2019] [Indexed: 12/20/2022]
Abstract
Background Infertility is a major worldwide problem which is caused by several factors such as environmental,
physiological, and genetic conditions. Lycopene is considered to be one of the most important antioxidants that can
contribute to reducing or preventing the psychological damage that leads to infertility. Thus, the aim of this study
was to evaluate the effect of lycopene supplementation on depression, anxiety and stress scales and quality of life in
infertile men. Materials and Methods In this randomized clinical trial, 44 infertile men with oligozoospermia were randomly
divided into the following two groups: the experimental group was supplemented with 25 mg lycopene, once per day for
12 weeks, and the control group received a placebo, for 12 weeks. Anthropometric and dietary data, physical activity,
mood status, including depression, anxiety, stress, and quality of life scores were recorded pre- and post-intervention.
Depression, anxiety and stress were assessed using a 21-item questionnaire (DASS-21) and quality of life was
examined using the WHO 26-qustion questionnaire (WHOQOL). Results The baseline age and body mass index (BMI) were not significantly different between the two groups (age: 31.89
± 2.51 and 32.15 ± 2.16 years old for intervention and placebo, respectively; P=0.732 and BMI: 27.20 ± 1.68 and 26.53 ±
1.53; for intervention and placebo, respectively; P=0.206). There were no significant differences in depression, anxiety and
stress values between the two groups; however, depression score significantly decreased in both groups compared to the
baseline levels (P=0.028 and P=0.031). No significant differences were observed in four domains of quality of life, except
for psychological domain that was improved in the lycopene group compared to the baseline values (P=0.049). Conclusion Short term supplementation of lycopene had no effect on mood status and quality of life, except for
psychological status in infertile men (Registration number: IRCT20171105037249N1).
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Affiliation(s)
- Mehran Nouri
- Students' Research Committee, School of Nutrition and Food Science, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mohammad Hossein Nasr-Esfahani
- Department of Reproductive Biotechnology, Reproductive Biomedicine Research Centre, Royan Institute for Biotechnology, ACECR, Isfahan, Iran.,Isfahan Fertility and Infertility Center, Isfahan, Iran
| | - Mohammad Javad Tarrahi
- Department of Epidemiology and Biostatistics, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Reza Amani
- Department of Clinical Nutrition, School of Nutrition and Food Science, Food Security Research Center, Isfahan University of Medical Sciences, Isfahan, Iran. Electronic Address:
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13
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Contextual fear learning and memory differ between stress coping styles in zebrafish. Sci Rep 2019; 9:9935. [PMID: 31289317 PMCID: PMC6617452 DOI: 10.1038/s41598-019-46319-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Accepted: 06/26/2019] [Indexed: 11/25/2022] Open
Abstract
Animals frequently overcome stressors and the ability to learn and recall these salient experiences is essential to an individual’s survival. As part of an animal’s stress coping style, behavioral and physiological responses to stressors are often consistent across contexts and time. However, we are only beginning to understand how cognitive traits can be biased by different coping styles. Here we investigate learning and memory differences in zebrafish (Danio rerio) displaying proactive and reactive stress coping styles. We assessed learning rate and memory duration using an associative fear conditioning paradigm that trained zebrafish to associate a context with exposure to a natural olfactory alarm cue. Our results show that both proactive and reactive zebrafish learn and remember this fearful association. However, we note significant interaction effects between stress coping style and cognition. Zebrafish with the reactive stress coping style acquired the fear memory at a significantly faster rate than proactive fish. While both stress coping styles showed equal memory recall one day post-conditioning, reactive zebrafish showed significantly stronger recall of the conditioned context relative to proactive fish four days post-conditioning. Through understanding how stress coping strategies promote biases in processing salient information, we gain insight into mechanisms that can constrain adaptive behavioral responses.
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14
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Wong RY, French J, Russ JB. Differences in stress reactivity between zebrafish with alternative stress coping styles. ROYAL SOCIETY OPEN SCIENCE 2019; 6:181797. [PMID: 31218026 PMCID: PMC6549991 DOI: 10.1098/rsos.181797] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Accepted: 04/25/2019] [Indexed: 06/09/2023]
Abstract
Animals experience stress in a variety of contexts and the behavioural and neuroendocrine responses to stress can vary among conspecifics. The responses across stressors often covary within an individual and are consistently different between individuals, which represent distinct stress coping styles (e.g. proactive and reactive). While studies have identified differences in peak glucocorticoid levels, less is known about how cortisol levels differ between stress coping styles at other time points of the glucocorticoid stress response. Here we quantified whole-body cortisol levels and stress-related behaviours (e.g. depth preference, movement) at time points representing the rise and recovery periods of the stress response in zebrafish lines selectively bred to display the proactive and reactive coping style. We found that cortisol levels and stress behaviours are significantly different between the lines, sexes and time points. Further, individuals from the reactive line showed significantly higher cortisol levels during the rising phase of the stress response compared with those from the proactive line. We also observed a significant correlation between individual variation of cortisol levels and depth preference but only in the reactive line. Our results show that differences in cortisol levels between the alternative stress coping styles extend to the rising phase of the endocrine stress response and that cortisol levels may explain variation in depth preferences in the reactive line. Differences in the timing and duration of cortisol levels may influence immediate behavioural displays and longer lasting neuromolecular mechanisms that modulate future responses.
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Affiliation(s)
- Ryan Y. Wong
- Department of Biology, University of Nebraska Omaha, Omaha, NE 68182, USA
- Department of Psychology, University of Nebraska Omaha, Omaha, NE 68182, USA
| | - Jeffrey French
- Department of Biology, University of Nebraska Omaha, Omaha, NE 68182, USA
- Department of Psychology, University of Nebraska Omaha, Omaha, NE 68182, USA
| | - Jacalyn B. Russ
- Department of Biology, University of Nebraska Omaha, Omaha, NE 68182, USA
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15
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Huang V, Butler AA, Lubin FD. Telencephalon transcriptome analysis of chronically stressed adult zebrafish. Sci Rep 2019; 9:1379. [PMID: 30718621 PMCID: PMC6361922 DOI: 10.1038/s41598-018-37761-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Accepted: 12/13/2018] [Indexed: 11/09/2022] Open
Abstract
Chronic stress leads to disruptions in learning and memory processes. The effects of chronic stress experience on the adult zebrafish brain, particularly the memory associated telencephalon brain region, is unclear. The goal of this study was to identify gene expression changes in the adult zebrafish brain triggered by chronic unpredictable stress. Transcriptome analysis of the telencephalon revealed 155 differentially expressed genes. Of these genes, some are critical genes involved in learning and memory, such as cdk5 and chrna7, indicating effects of chronic unpredictable stress on zebrafish memory. Interestingly, several genes were annotated in the Orange domain, which is an amino acid sequence present in eukaryotic DNA-binding transcription repressors. Furthermore, we identified hsd11b2, a cortisol inactivating gene, as chronic stress-responsive in the whole zebrafish brain. Collectively, these findings suggest that memory associated gene expression changes in adult zebrafish telencephalon are affected by chronic stress experience.
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Affiliation(s)
- Victoria Huang
- Department of Neurobiology, University of Alabama at Birmingham, Birmingham, AL, 35294, USA
| | - Anderson A Butler
- Department of Neurobiology, University of Alabama at Birmingham, Birmingham, AL, 35294, USA
| | - Farah D Lubin
- Department of Neurobiology, University of Alabama at Birmingham, Birmingham, AL, 35294, USA.
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16
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Volgin AD, Yakovlev OA, Demin KA, de Abreu MS, Alekseeva PA, Friend AJ, Lakstygal AM, Amstislavskaya TG, Bao W, Song C, Kalueff AV. Zebrafish models for personalized psychiatry: Insights from individual, strain and sex differences, and modeling gene x environment interactions. J Neurosci Res 2018; 97:402-413. [PMID: 30320468 DOI: 10.1002/jnr.24337] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Revised: 08/16/2018] [Accepted: 09/17/2018] [Indexed: 12/30/2022]
Abstract
Currently becoming widely recognized, personalized psychiatry focuses on unique physiological and genetic profiles of patients to best tailor their therapy. However, the role of individual differences, as well as genetic and environmental factors, in human psychiatric disorders remains poorly understood. Animal experimental models are a valuable tool to improve our understanding of disease pathophysiology and its molecular mechanisms. Due to high reproduction capability, fully sequenced genome, easy gene editing, and high genetic and physiological homology with humans, zebrafish (Danio rerio) are emerging as a novel powerful model in biomedicine. Mounting evidence supports zebrafish as a useful model organism in CNS research. Robustly expressed in these fish, individual, strain, and sex differences shape their CNS responses to genetic, environmental, and pharmacological manipulations. Here, we discuss zebrafish as a promising complementary translational tool to further advance patient-centered personalized psychiatry.
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Affiliation(s)
- Andrey D Volgin
- Almazov National Medical Research Centre, Ministry of Healthcare of Russian Federation, St. Petersburg, Russia.,Institute of Translational Biomedicine, St. Petersburg State University, St. Petersburg, Russia.,Military Medical Academy, St Petersburg, Russia
| | - Oleg A Yakovlev
- Almazov National Medical Research Centre, Ministry of Healthcare of Russian Federation, St. Petersburg, Russia.,Institute of Translational Biomedicine, St. Petersburg State University, St. Petersburg, Russia.,Military Medical Academy, St Petersburg, Russia
| | - Konstantin A Demin
- Almazov National Medical Research Centre, Ministry of Healthcare of Russian Federation, St. Petersburg, Russia.,Institute of Translational Biomedicine, St. Petersburg State University, St. Petersburg, Russia
| | - Murilo S de Abreu
- Bioscience Institute, University of Passo Fundo (UPF), Passo Fundo, Brazil.,Postgraduate Program in Pharmacology, Federal University of Santa Maria, Santa Maria, Brazil
| | - Polina A Alekseeva
- Almazov National Medical Research Centre, Ministry of Healthcare of Russian Federation, St. Petersburg, Russia
| | - Ashton J Friend
- Tulane University School of Science and Engineering, New Orleans, Louisiana
| | - Anton M Lakstygal
- Almazov National Medical Research Centre, Ministry of Healthcare of Russian Federation, St. Petersburg, Russia.,Institute of Translational Biomedicine, St. Petersburg State University, St. Petersburg, Russia
| | - Tamara G Amstislavskaya
- Laboratory of Translational Biopsychiatry, Scientific Research Institute of Physiology and Basic Medicine, Novosibirsk, Russia
| | - Wandong Bao
- School of Pharmacy, Southwest University, Chongqing, China
| | - Cai Song
- Research Institute of Marine Drugs and Nutrition, Guangdong Ocean University, Zhanjiang, China
| | - Allan V Kalueff
- School of Pharmacy, Southwest University, Chongqing, China.,Ural Federal University, Ekaterinburg, Russia.,ZENEREI Research Center, Slidell, Louisiana.,Institute of Experimental Medicine, Almazov National Medical Research Centre, Ministry of Healthcare of Russian Federation, St. Petersburg, Russia.,Granov Russian Scientific Center of Radiology and Surgical Technologies, Ministry of Healthcare of Russian Federation, St. Petersburg, Russia.,Scientific Research Institute of Physiology and Basic Medicine, Novosibirsk, Russia.,Laboratory of Biological Psychiatry, Institute of Translational Biomedicine, St. Petersburg State University, St. Petersburg, Russia
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17
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Repeatability and reliability of exploratory behavior in proactive and reactive zebrafish, Danio rerio. Sci Rep 2018; 8:12114. [PMID: 30108258 PMCID: PMC6092368 DOI: 10.1038/s41598-018-30630-3] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Accepted: 08/02/2018] [Indexed: 12/12/2022] Open
Abstract
Behavioral responses to novel situations often vary and can belong to a suite of correlated behaviors. Characteristic behaviors of different personality types (e.g. stress coping styles) are generally consistent across contexts and time. Here, we compare the repeatability and reliability of exploratory behaviors between zebrafish strains selectively bred to display contrasting behavioral responses to stressors that represent the proactive-reactive axis. Specifically, we measure exploratory behavior of individual fish in an open field test over five weeks. We quantified the stationary time, average swimming speed and time spent by a fish in the center area. We found a number of strain differences for each behavioral measure. Stationary time was the most repeatable and reliable measure for assessing proactive-reactive behavioral differences. Reactive zebrafish generally showed the highest reliability and repeatability of exploratory behavior compared to proactive zebrafish and a separate wild caught strain. Given the increased interest in the evolutionary consequences and proximate mechanisms of consistent individual differences, it will be important to continue to investigate how different selective pressures may influence expression of stress coping styles and their effects on the consistency of an animal’s behavior.
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18
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Soares MC, Gerlai R, Maximino C. The integration of sociality, monoamines and stress neuroendocrinology in fish models: applications in the neurosciences. JOURNAL OF FISH BIOLOGY 2018; 93:170-191. [PMID: 30043474 DOI: 10.1111/jfb.13757] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Accepted: 07/12/2018] [Indexed: 06/08/2023]
Abstract
Animal-focused research has been crucial for scientific advancement, but rodents are still taking a starring role. Starting as merely supporting evidence found in rodents, the use of fish models has slowly taken a more central role and expanded its overall contributions in areas such as social sciences, evolution, physiology and recently in translational medical research. In the neurosciences, zebrafish Danio rerio have been widely adopted, contributing to our understanding of the genetic control of brain processes and the effects of pharmacological manipulations. However, discussion continues regarding the paradox of function versus structure, when fishes and mammals are compared and on the potentially evolutionarily conserved nature of behaviour across fish species. From a behavioural standpoint, we explore aversive-stress and social behaviour in selected fish models and refer to the extensive contributions of stress and monoaminergic systems. We suggest that, in spite of marked neuroanatomical differences between fishes and mammals, stress and sociality are conserved at the behavioural and molecular levels. We also suggest that stress and sociality are mediated by monoamines in predictable and non-trivial ways and that monoamines could bridge the relationship between stress and social behaviour. To reconcile the level of divergence with the level of similarity, we need neuroanatomical, pharmacological, behavioural and ecological studies conducted in the laboratory and in nature. These areas need to add to each other to enhance our understanding of fish behaviour and ultimately how this all may lead to better model systems for translational studies.
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Affiliation(s)
- Marta C Soares
- Centro de Investigação em Biodiversidade e Recursos Genéticos - CIBIO, Universidade do Porto, Vairão, Portugal
| | - Robert Gerlai
- Department of Psychology, University of Toronto Mississauga, Mississauga, Canada
| | - Caio Maximino
- Laboratório de Neurociências e Comportamento 'Frederico Guilherme Graeff', Instituto de Estudos em Saúde e Biológicas - IESB, Universidade Federal do Sul e Sudeste do Pará, Marabá, Brazil
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19
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Abstract
Dominance hierarchies are common across the animal kingdom and have important consequences for reproduction and survival. Animals of lower social status cope with repeated social defeat using proactive and reactive behaviours. However, there remains a paucity of information on how an individual’s coping behaviours changes over time or what neural mechanisms are involved. We used a resident-intruder paradigm in the African cichlid fish Astatotilapia burtoni to investigate the neural correlates of these two opposing behaviour groups. Fish initially used both proactive and reactive behaviours, but had a dramatic increase in use of proactive behaviours during the third interaction, and this was followed by cessation of proactive behaviours and exclusive use of reactive coping. By quantifying neural activation in socially-relevant brain regions, we identify a subset of brain nuclei, including those homologous to the mammalian amygdala, showing higher activation in fish displaying proactive but not reactive behaviours. Fish displaying reactive behaviours had greater neural activation in the superior raphe, suggesting a possible conserved function during social defeat across vertebrates. These data provide the first evidence on the involvement of specific brain regions underlying proactive and reactive coping in fishes, indicating that these nuclei have conserved functions during social defeat across taxa.
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20
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Song C, Liu BP, Zhang YP, Peng Z, Wang J, Collier AD, Echevarria DJ, Savelieva KV, Lawrence RF, Rex CS, Meshalkina DA, Kalueff AV. Modeling consequences of prolonged strong unpredictable stress in zebrafish: Complex effects on behavior and physiology. Prog Neuropsychopharmacol Biol Psychiatry 2018; 81:384-394. [PMID: 28847526 DOI: 10.1016/j.pnpbp.2017.08.021] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Revised: 08/17/2017] [Accepted: 08/19/2017] [Indexed: 12/12/2022]
Abstract
Chronic stress is the major pathogenetic factor of human anxiety and depression. Zebrafish (Danio rerio) have become a novel popular model species for neuroscience research and CNS drug discovery. The utility of zebrafish for mimicking human affective disorders is also rapidly growing. Here, we present a new zebrafish model of clinically relevant, prolonged unpredictable strong chronic stress (PUCS). The 5-week PUCS induced overt anxiety-like and motor retardation-like behaviors in adult zebrafish, also elevating whole-body cortisol and proinflammatory cytokines - interleukins IL-1β and IL-6. PUCS also elevated whole-body levels of the anti-inflammatory cytokine IL-10 and increased the density of dendritic spines in zebrafish telencephalic neurons. Chronic treatment of fish with an antidepressant fluoxetine (0.1mg/L for 8days) normalized their behavioral and endocrine phenotypes, as well as corrected stress-elevated IL-1β and IL-6 levels, similar to clinical and rodent data. The CNS expression of the bdnf gene, the two genes of its receptors (trkB, p75), and the gfap gene of glia biomarker, the glial fibrillary acidic protein, was unaltered in all three groups. However, PUCS elevated whole-body BDNF levels and the telencephalic dendritic spine density (which were corrected by fluoxetine), thereby somewhat differing from the effects of chronic stress in rodents. Together, these findings support zebrafish as a useful in-vivo model of chronic stress, also calling for further cross-species studies of both shared/overlapping and distinct neurobiological responses to chronic stress.
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Affiliation(s)
- Cai Song
- Institute for Marine Drugs and Nutrition, Zhanjiang City Key Laboratory, College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 3452001, Guangdong, China; Graduate Institute of Neural and Cognitive Science, China Medical University and Hospital, Taichung 00001, Taiwan.
| | - Bai-Ping Liu
- Institute for Marine Drugs and Nutrition, Zhanjiang City Key Laboratory, College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 3452001, Guangdong, China
| | - Yong-Ping Zhang
- Institute for Marine Drugs and Nutrition, Zhanjiang City Key Laboratory, College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 3452001, Guangdong, China
| | - Zhilan Peng
- Institute for Marine Drugs and Nutrition, Zhanjiang City Key Laboratory, College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 3452001, Guangdong, China
| | - JiaJia Wang
- Institute for Marine Drugs and Nutrition, Zhanjiang City Key Laboratory, College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 3452001, Guangdong, China
| | - Adam D Collier
- ZENEREI Institute and the International Zebrafish Neuroscience Research Consortium (ZNRC), Slidell, LA 70458, USA
| | - David J Echevarria
- ZENEREI Institute and the International Zebrafish Neuroscience Research Consortium (ZNRC), Slidell, LA 70458, USA; Department of Psychology, University of Southern Mississippi, Hattiesburg, MS 39406, USA
| | - Katerina V Savelieva
- ZENEREI Institute and the International Zebrafish Neuroscience Research Consortium (ZNRC), Slidell, LA 70458, USA
| | - Robert F Lawrence
- Afraxis, Inc. 6605 Nancy Ridge Rd. Suite 224, San Diego, CA 92121, USA
| | - Christopher S Rex
- Afraxis, Inc. 6605 Nancy Ridge Rd. Suite 224, San Diego, CA 92121, USA
| | - Darya A Meshalkina
- Institute of Translational Biomedicine, St. Petersburg State University, St. Petersburg 3960002, Russia
| | - Allan V Kalueff
- Institute for Marine Drugs and Nutrition, Zhanjiang City Key Laboratory, College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 3452001, Guangdong, China; ZENEREI Institute and the International Zebrafish Neuroscience Research Consortium (ZNRC), Slidell, LA 70458, USA; Institute of Translational Biomedicine, St. Petersburg State University, St. Petersburg 3960002, Russia; Ural Federal University, Ekaterinburg 620002, Russia.
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21
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Backström T, Winberg S. Serotonin Coordinates Responses to Social Stress-What We Can Learn from Fish. Front Neurosci 2017; 11:595. [PMID: 29163002 PMCID: PMC5669303 DOI: 10.3389/fnins.2017.00595] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Accepted: 10/10/2017] [Indexed: 12/20/2022] Open
Abstract
Social interaction is stressful and subordinate individuals are often subjected to chronic stress, which greatly affects both their behavior and physiology. In teleost fish the social position of an individual may have long-term effects, such as effects on migration, age of sexual maturation or even sex. The brain serotonergic system plays a key role in coordinating autonomic, behavioral and neuroendocrine stress responses. Social subordination results in a chronic activation of the brain serotonergic system an effect, which seems to be central in the subordinate phenotype. However, behavioral effects of short-term acute activation of the serotonergic system are less obvious. As in other vertebrates, divergent stress coping styles, often referred to as proactive and reactive, has been described in teleosts. As demonstrated by selective breeding, stress coping styles appear to be partly heritable. However, teleost fish are characterized by plasticity, stress coping style being affected by social experience. Again, the brain serotonergic system appears to play an important role. Studies comparing brain gene expression of fish of different social rank and/or displaying divergent stress coping styles have identified several novel factors that seem important for controlling aggressive behavior and stress coping, e.g., histamine and hypocretin/orexin. These may also interact with brain monoaminergic systems, including serotonin.
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Affiliation(s)
- Tobias Backström
- Institute of Integrated Natural Sciences, University Koblenz-Landau, Koblenz, Germany
| | - Svante Winberg
- Department of Neuroscience, Uppsala University, Uppsala, Sweden
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22
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Semenova S, Rozov S, Panula P. Distribution, properties, and inhibitor sensitivity of zebrafish catechol-O-methyl transferases (COMT). Biochem Pharmacol 2017; 145:147-157. [PMID: 28844929 DOI: 10.1016/j.bcp.2017.08.017] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Accepted: 08/14/2017] [Indexed: 12/24/2022]
Abstract
Catechol-O-methyltransferase (COMT; EC 2.1.1.6) is an enzyme with multiple functions in vertebrates. COMT methylates and thus inactivates catecholamine neurotransmitters and metabolizes xenobiotic catechols. Gene polymorphism rs4680 that influences the enzymatic activity of COMT affects cognition and behavior in humans. The zebrafish is widely used as an experimental animal in many areas of biomedical research, but most aspects of COMT function in this species have remained uncharacterized. We hypothesized that both comt genes play essential roles in zebrafish. Both comt-a and comt-b were widely expressed in zebrafish tissues, but their relative abundance varied considerably. Homogenates of zebrafish organs, including the brain, showed enzymatic COMT activity that was the highest in the liver and kidney. Treatment of larval zebrafish with the COMT inhibitor Ro41-0960 shifted the balance of catecholamine metabolic pathways towards increased oxidative metabolism. Whole-body concentrations of dioxyphenylacetic acid (DOPAC), a product of dopamine oxidation, were increased in the inhibitor-treated larvae, although the dopamine levels were unchanged. Thus, COMT is likely to participate in the processing of catecholamine neurotransmitters in the zebrafish, but the inhibition of COMT in larval fish is compensated efficiently and does not have pronounced effects on dopamine levels.
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Affiliation(s)
- Svetlana Semenova
- Department of Anatomy and Neuroscience Center, University of Helsinki, FI-00014 Helsinki, Finland
| | - Stanislav Rozov
- Department of Anatomy and Neuroscience Center, University of Helsinki, FI-00014 Helsinki, Finland
| | - Pertti Panula
- Department of Anatomy and Neuroscience Center, University of Helsinki, FI-00014 Helsinki, Finland.
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23
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Benowitz KM, McKinney EC, Cunningham CB, Moore AJ. Relating quantitative variation within a behavior to variation in transcription. Evolution 2017; 71:1999-2009. [PMID: 28542920 DOI: 10.1111/evo.13273] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Revised: 05/27/2017] [Accepted: 04/21/2017] [Indexed: 12/14/2022]
Abstract
Many studies have shown that variation in transcription is associated with changes in behavioral state, or with variation within a state, but little has been done to address if the same genes are involved in both. Here, we investigate the transcriptional basis of variation in parental provisioning using two species of burying beetle, Nicrophorus orbicollis and Nicrophorus vespilloides. We used RNA-seq to compare transcription in parents that provided high amounts of provisioning behavior versus low amounts in males and females of each species. We found no overarching transcriptional patterns distinguishing high from low caring parents, and no informative transcripts that displayed particularly large expression differences in either sex. However, we did find subtler gene expression differences between high and low provisioning parents that are consistent across both sexes and species. Furthermore, we show that transcripts previously implicated in transitioning into parental care in N. vespilloides had high variance in the levels of transcription and were unusually likely to display differential expression between high and low provisioning parents. Thus, quantitative behavioral variation appears to reflect many transcriptional differences of small effect. Furthermore, the same transcripts required for the transition between behavioral states are also related to variation within a behavioral state.
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Affiliation(s)
- Kyle M Benowitz
- Department of Genetics, University of Georgia, Athens, Georgia, 30602
| | | | - Christopher B Cunningham
- Department of Genetics, University of Georgia, Athens, Georgia, 30602.,Department of Biosciences, Swansea University, Swansea, SA2 8PP, UK
| | - Allen J Moore
- Department of Genetics, University of Georgia, Athens, Georgia, 30602
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24
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Chaube R, Rawat A, Inbaraj RM, Bobe J, Guiguen Y, Fostier A, Joy KP. Identification and characterization of a catechol-o-methyltransferase cDNA in the catfish Heteropneustes fossilis: Tissue, sex and seasonal variations, and effects of gonadotropin and 2-hydroxyestradiol-17β on mRNA expression. Gen Comp Endocrinol 2017; 246:129-141. [PMID: 27939670 DOI: 10.1016/j.ygcen.2016.12.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Revised: 12/03/2016] [Accepted: 12/06/2016] [Indexed: 11/18/2022]
Abstract
Catechol-O-methyltransferase (COMT) is involved in the methylation and inactivation of endogenous and xenobiotic catechol compounds, and serves as a common biochemical link in the catecholamine and catecholestrogen metabolism. Studies on cloning, sequencing and function characterization comt gene in lower vertebrates like fish are fewer. In the present study, a full-length comt cDNA of 1442bp with an open-reading frame (ORF) of 792bp, and start codon (ATG) at nucleotide 162 and stop codon (TAG) at nucleotide 953 was isolated and characterized in the stinging catfish Heteropneustes fossilis (accession No. KT597925). The ORF codes for a protein of 263 amino acid residues, which is also validated by the catfish transcriptome data analysis. The catfish Comt shared conserved putative structural regions important for S-adenosyl methionine (AdoMet)- and catechol-binding, transmembrane regions, two glycosylation sites (N-65 and N-91) at the N-terminus and two phosphorylation sites (Ser-235 and Thr-240) at the C-terminus. The gene was expressed in all tissues examined and the expression showed significant sex dimorphic distribution with high levels in females. The transcript was abundant in the liver, brain and gonads and low in muscles. The transcripts showed significant seasonal variations in the brain and ovary, increased progressively to the peak levels in spawning phase and then declined. The brain and ovarian comt mRNA levels showed periovulatory changes after in vivo and in vitro human chorionic gonadotropin (hCG) treatments with high fold increases at 16 and 24h in the brain and at 16h in the ovary. The catecholestrogen 2-hydroxyE2 up regulated ovarian comt expression in vitro with the highest fold increase at 16h. The mRNA and protein was localized in the follicular layer of the vitellogenic follicles and in the cytoplasm of primary follicles. The data were discussed in relation to catecholamine and catecholestrogen-mediated functions in the brain and ovary of the stinging catfish.
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Affiliation(s)
- R Chaube
- Department of Zoology, Banaras Hindu University, Varanasi 221005, India
| | - A Rawat
- Department of Zoology, Banaras Hindu University, Varanasi 221005, India
| | - R M Inbaraj
- Department of Zoology, Madras Christian College, Chennai 600059, India
| | - J Bobe
- INRA LPGP UR037, Fish Physiology and Genomics, Campus de Beaulieu, F-35042 Rennes Cedex, France
| | - Y Guiguen
- INRA LPGP UR037, Fish Physiology and Genomics, Campus de Beaulieu, F-35042 Rennes Cedex, France
| | - A Fostier
- INRA LPGP UR037, Fish Physiology and Genomics, Campus de Beaulieu, F-35042 Rennes Cedex, France
| | - K P Joy
- Department of Biotechnology, Cochin University of Science and Technology, Kochi 682022, India.
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25
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Bao W, Greenwold MJ, Sawyer RH. Using scale and feather traits for module construction provides a functional approach to chicken epidermal development. Funct Integr Genomics 2017; 17:641-651. [PMID: 28477104 DOI: 10.1007/s10142-017-0561-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Revised: 04/16/2017] [Accepted: 04/19/2017] [Indexed: 10/19/2022]
Abstract
Gene co-expression network analysis has been a research method widely used in systematically exploring gene function and interaction. Using the Weighted Gene Co-expression Network Analysis (WGCNA) approach to construct a gene co-expression network using data from a customized 44K microarray transcriptome of chicken epidermal embryogenesis, we have identified two distinct modules that are highly correlated with scale or feather development traits. Signaling pathways related to feather development were enriched in the traditional KEGG pathway analysis and functional terms relating specifically to embryonic epidermal development were also enriched in the Gene Ontology analysis. Significant enrichment annotations were discovered from customized enrichment tools such as Modular Single-Set Enrichment Test (MSET) and Medical Subject Headings (MeSH). Hub genes in both trait-correlated modules showed strong specific functional enrichment toward epidermal development. Also, regulatory elements, such as transcription factors and miRNAs, were targeted in the significant enrichment result. This work highlights the advantage of this methodology for functional prediction of genes not previously associated with scale- and feather trait-related modules.
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Affiliation(s)
- Weier Bao
- Department of Biological Sciences, University of South Carolina, Columbia, SC, 29208, USA.
| | - Matthew J Greenwold
- Department of Biological Sciences, University of South Carolina, Columbia, SC, 29208, USA
| | - Roger H Sawyer
- Department of Biological Sciences, University of South Carolina, Columbia, SC, 29208, USA
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26
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Porseryd T, Volkova K, Reyhanian Caspillo N, Källman T, Dinnetz P, Porsh Hällström I. Persistent Effects of Developmental Exposure to 17α-Ethinylestradiol on the Zebrafish ( Danio rerio) Brain Transcriptome and Behavior. Front Behav Neurosci 2017; 11:69. [PMID: 28473760 PMCID: PMC5397488 DOI: 10.3389/fnbeh.2017.00069] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Accepted: 04/03/2017] [Indexed: 11/18/2022] Open
Abstract
The synthetic estrogen 17α-ethinylestradiol (EE2) is an endocrine disrupting compound of concern due to its persistence and widespread presence in the aquatic environment. Effects of developmental exposure to low concentrations of EE2 in fish on reproduction and behavior not only persisted to adulthood, but have also been observed to be transmitted to several generations of unexposed progeny. To investigate the possible biological mechanisms of the persistent anxiogenic phenotype, we exposed zebrafish embryos for 80 days post fertilization to 0, 3, and 10 ng/L EE2 (measured concentrations 2.14 and 7.34 ng/L). After discontinued exposure, the animals were allowed to recover for 120 days in clean water. Adult males and females were later tested for changes in stress response and shoal cohesion, and whole-brain gene expression was analyzed with RNA sequencing. The results show increased anxiety in the novel tank and scototaxis tests, and increased shoal cohesion in fish exposed during development to EE2. RNA sequencing revealed 34 coding genes differentially expressed in male brains and 62 in female brains as a result of EE2 exposure. Several differences were observed between males and females in differential gene expression, with only one gene, sv2b, coding for a synaptic vesicle protein, that was affected by EE2 in both sexes. Functional analyses showed that in female brains, EE2 had significant effects on pathways connected to the circadian rhythm, cytoskeleton and motor proteins and synaptic proteins. A large number of non-coding sequences including 19 novel miRNAs were also differentially expressed in the female brain. The largest treatment effect in male brains was observed in pathways related to cholesterol biosynthesis and synaptic proteins. Circadian rhythm and cholesterol biosynthesis, previously implicated in anxiety behavior, might represent possible candidate pathways connecting the transcriptome changes to the alterations to behavior. Further the observed alteration in expression of genes involved in synaptogenesis and synaptic function may be important for the developmental modulations resulting in an anxiety phenotype. This study represents an initial survey of the fish brain transcriptome by RNA sequencing after long-term recovery from developmental exposure to an estrogenic compound.
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Affiliation(s)
- Tove Porseryd
- School of Natural Sciences, Technology and Environmental Studies, Södertörn UniversityHuddinge, Sweden
| | - Kristina Volkova
- School of Natural Sciences, Technology and Environmental Studies, Södertörn UniversityHuddinge, Sweden.,Örebro Life Science Center, School of Science and Technology, Örebro UniversityÖrebro, Sweden
| | - Nasim Reyhanian Caspillo
- School of Natural Sciences, Technology and Environmental Studies, Södertörn UniversityHuddinge, Sweden.,Örebro Life Science Center, School of Science and Technology, Örebro UniversityÖrebro, Sweden
| | - Thomas Källman
- National Bioinformatics Infrastructure Sweden, Uppsala UniversityUppsala, Sweden.,Science for Life Laboratory and Department of Medical Biochemistry and Microbiology, Uppsala UniversityUppsala, Sweden
| | - Patrik Dinnetz
- School of Natural Sciences, Technology and Environmental Studies, Södertörn UniversityHuddinge, Sweden
| | - Inger Porsh Hällström
- School of Natural Sciences, Technology and Environmental Studies, Södertörn UniversityHuddinge, Sweden
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27
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Øverli Ø, Sørensen C. On the Role of Neurogenesis and Neural Plasticity in the Evolution of Animal Personalities and Stress Coping Styles. BRAIN, BEHAVIOR AND EVOLUTION 2016; 87:167-174. [DOI: 10.1159/000447085] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Individual variation in how animals react to stress and environmental change has become a central topic in a wide range of biological disciplines, from evolutionary ecology to biomedicine. Such variation manifests phenotypically as correlated trait-clusters (referred to as coping styles, behavioral syndromes, shyness-boldness, or personality traits). Thresholds for switching from active coping (fight-flight) to inhibition and passive behavior when exposed to stress depend on experience and genetic factors. Comparative research has revealed a range of neuroendocrine-behavioral associations which are conserved throughout the vertebrate subphylum, including factors affecting perception, learning, and memory of stimuli and events. Here we review conserved aspects of the contribution of neurogenesis and other aspects of neural plasticity to stress coping. In teleost fish, brain cell proliferation and neurogenesis have received recent attention. This work reveals that brain cell proliferation and neurogenesis are associated with heritable variation in stress coping style, and they are also differentially affected by short- and long-term stress in a biphasic manner. Routine-dependent and inflexible behavior in proactive individuals is associated with limited neural plasticity. These evolutionarily conserved relationships hold the potential to illuminate the biological background for stress-related neurobiological disorders.
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28
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Abstract
Behavioral displays or physiological responses are often influenced by intrinsic and extrinsic mechanisms in the context of the organism's evolutionary history. Understanding differences in transcriptome profiles can give insight into adaptive or pathological responses. We utilize high throughput sequencing (RNA-sequencing) to characterize the neurotranscriptome profiles in both males and females across four strains of zebrafish (Danio rerio). Strains varied by previously documented differences in stress and anxiety-like behavioral responses, and generations removed from wild-caught individuals. Here we describe detailed methodologies and quality controls in generating the raw RNA-sequencing reads that are publically available in NCBI's Gene Expression Omnibus database (GSE61108).
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Affiliation(s)
- Ryan Y Wong
- Department of Biology, University of Nebraska at Omaha, Omaha, NE 68182, USA
| | - John Godwin
- Department of Biological Sciences, W.M. Keck Center for Behavioral Biology, Box 7617, North Carolina State University, Raleigh, NC 27695-7617, USA
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