1
|
Premachandran H, Wilkin J, Arruda-Carvalho M. Minimizing Variability in Developmental Fear Studies in Mice: Toward Improved Replicability in the Field. Curr Protoc 2024; 4:e1040. [PMID: 38713136 DOI: 10.1002/cpz1.1040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/08/2024]
Abstract
In rodents, the first weeks of postnatal life feature remarkable changes in fear memory acquisition, retention, extinction, and discrimination. Early development is also marked by profound changes in brain circuits underlying fear memory processing, with heightened sensitivity to environmental influences and stress, providing a powerful model to study the intersection between brain structure, function, and the impacts of stress. Nevertheless, difficulties related to breeding and housing young rodents, preweaning manipulations, and potential increased variability within that population pose considerable challenges to developmental fear research. Here we discuss several factors that may promote variability in studies examining fear conditioning in young rodents and provide recommendations to increase replicability. We focus primarily on experimental conditions, design, and analysis of rodent fear data, with an emphasis on mouse studies. The convergence of anatomical, synaptic, physiological, and behavioral changes during early life may increase variability, but careful practice and transparency in reporting may improve rigor and consensus in the field. © 2024 The Authors. Current Protocols published by Wiley Periodicals LLC.
Collapse
Affiliation(s)
- Hanista Premachandran
- Department of Psychology, University of Toronto Scarborough, Toronto, Ontario, Canada
- These authors contributed equally to this work
| | - Jennifer Wilkin
- Department of Psychology, University of Toronto Scarborough, Toronto, Ontario, Canada
- These authors contributed equally to this work
| | - Maithe Arruda-Carvalho
- Department of Psychology, University of Toronto Scarborough, Toronto, Ontario, Canada
- Department of Cell and Systems Biology, University of Toronto, Toronto, Ontario, Canada
| |
Collapse
|
2
|
Kaplan HS, Logeman BL, Zhang K, Santiago C, Sohail N, Naumenko S, Ho Sui SJ, Ginty DD, Ren B, Dulac C. Sensory Input, Sex, and Function Shape Hypothalamic Cell Type Development. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.01.23.576835. [PMID: 38328205 PMCID: PMC10849564 DOI: 10.1101/2024.01.23.576835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/09/2024]
Abstract
Mammalian behavior and physiology undergo dramatic changes in early life. Young animals rely on conspecifics to meet their homeostatic needs, until weaning and puberty initiate nutritional independence and sex-specific social interactions, respectively. How neuronal populations regulating homeostatic functions and social behaviors develop and mature during these transitions remains unclear. We used paired transcriptomic and chromatin accessibility profiling to examine the developmental trajectories of neuronal populations in the hypothalamic preoptic region, where cell types with key roles in physiological and behavioral control have been identified1-6. These data reveal a remarkable diversity of developmental trajectories shaped by the sex of the animal, and the location and behavioral or physiological function of the corresponding cell types. We identify key stages of preoptic development, including the perinatal emergence of sex differences, postnatal maturation and subsequent refinement of signaling networks, and nonlinear transcriptional changes accelerating at the time of weaning and puberty. We assessed preoptic development in various sensory mutants and find a major role for vomeronasal sensing in the timing of preoptic cell type maturation. These results provide novel insights into the development of neurons controlling homeostatic functions and social behaviors and lay ground for examining the dynamics of these functions in early life.
Collapse
Affiliation(s)
- Harris S. Kaplan
- Department of Molecular and Cellular Biology, Howard Hughes Medical Institute, Center for Brain Science, Harvard University, Cambridge, MA, USA
| | - Brandon L. Logeman
- Department of Molecular and Cellular Biology, Howard Hughes Medical Institute, Center for Brain Science, Harvard University, Cambridge, MA, USA
| | - Kai Zhang
- Department of Cellular and Molecular Medicine, Center for Epigenomics, University of California, San Diego School of Medicine, La Jolla, CA 92093, USA
- Current address: Westlake Laboratory of Life Sciences and Biomedicine, School of Life Sciences, Westlake University, Hangzhou, China
| | - Celine Santiago
- Department of Neurobiology, Harvard Medical School, Howard Hughes Medical Institute, 220 Longwood Ave, Boston, MA, 02115, USA
| | - Noor Sohail
- Department of Biostatistics, Harvard Chan School of Public Health, Boston, MA, USA
| | - Serhiy Naumenko
- Department of Biostatistics, Harvard Chan School of Public Health, Boston, MA, USA
- Newborn Screening Ontario, Ottawa, ON, Canada
| | - Shannan J. Ho Sui
- Department of Biostatistics, Harvard Chan School of Public Health, Boston, MA, USA
| | - David D. Ginty
- Department of Neurobiology, Harvard Medical School, Howard Hughes Medical Institute, 220 Longwood Ave, Boston, MA, 02115, USA
| | - Bing Ren
- Department of Cellular and Molecular Medicine, Center for Epigenomics, University of California, San Diego School of Medicine, La Jolla, CA 92093, USA
| | - Catherine Dulac
- Department of Molecular and Cellular Biology, Howard Hughes Medical Institute, Center for Brain Science, Harvard University, Cambridge, MA, USA
| |
Collapse
|
3
|
Satzinger S, Willenborg S, Ding X, Klose CSN, Radtke D, Voehringer D, Eming SA. Type 2 Immunity Regulates Dermal White Adipose Tissue Function. J Invest Dermatol 2023; 143:2456-2467.e5. [PMID: 37295491 DOI: 10.1016/j.jid.2023.05.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 04/19/2023] [Accepted: 05/09/2023] [Indexed: 06/12/2023]
Abstract
Type 2 immune responses have been increasingly linked with tissue maintenance, regeneration, and metabolic homeostasis. The molecular basis of regulator and effector mechanisms of type 2 immunity in skin regeneration and homeostasis is still lacking. In this study, we analyzed the role of IL-4Rα signaling in the regeneration of diverse cellular compartments in the skin. Mutants with global IL-4Rα deficiency showed two major phenotypes: first, a pronounced atrophy of the interfollicular epidermis, and second, a significant increase in dermal white adipose tissue thickness in mice aged 3 weeks (postnatal day 21) compared with littermate controls. Notably, IL-4Rα deficiency decreased the activation of hormone-sensitive lipase, a rate-limiting step in lipolysis. Immunohistochemical and FACS analysis in IL-4/enhanced GFP reporter mice showed that IL-4 expression peaked on postnatal day 21 and that eosinophils are the predominant IL-4-expressing cells. Eosinophil-deficient mice recapitulated the lipolytic-defective dermal white adipose tissue phenotype of Il4ra-deficient mice, showing that eosinophils are necessary for dermal white adipose tissue lipolysis. Collectively, we provide mechanistic insights into the regulation of interfollicular epidermis and hormone-sensitive lipase-mediated lipolysis in dermal white adipose tissue in early life by IL-4Rα, and our findings show that eosinophils play a critical role in this process.
Collapse
Affiliation(s)
| | | | - Xiaolei Ding
- Department of Dermatology, University of Cologne, Cologne, Germany; Institute of Geriatrics (Shanghai University), Affiliated Nantong Hospital of Shanghai University (The Sixth People's Hospital of Nantong), School of Medicine, Shanghai University, Nantong, China; Shanghai Engineering Research Center of Organ Repair, School of Medicine, Shanghai University, Shanghai, China
| | - Christoph S N Klose
- Department of Microbiology, Infectious Diseases and Immunology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Daniel Radtke
- Department of Infection Biology, University Hospital Erlangen and Friedrich-Alexander Universität Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - David Voehringer
- Department of Infection Biology, University Hospital Erlangen and Friedrich-Alexander Universität Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Sabine A Eming
- Department of Dermatology, University of Cologne, Cologne, Germany; Center for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany; Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany; Institute of Zoology, Developmental Biology Unit, University of Cologne, Cologne, Germany.
| |
Collapse
|
4
|
Wu Z, Wang Q, Yang F, Wang J, Zhao Y, Perrino BA, Chen J. Functional and Transcriptomic Characterization of Postnatal Maturation of ENS and SIP Syncytium in Mice Colon. Biomolecules 2023; 13:1688. [PMID: 38136560 PMCID: PMC10741935 DOI: 10.3390/biom13121688] [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: 08/22/2023] [Revised: 10/16/2023] [Accepted: 11/14/2023] [Indexed: 12/24/2023] Open
Abstract
The interplay of the enteric nervous system (ENS) and SIP syncytium (smooth muscle cells-interstitial cells of Cajal-PDGFRα+ cells) plays an important role in the regulation of gastrointestinal (GI) motility. This study aimed to investigate the dynamic regulatory mechanisms of the ENS-SIP system on colon motility during postnatal development. Colonic samples of postnatal 1-week-old (PW1), 3-week-old (PW3), and 5-week-old (PW5) mice were characterized by RNA sequencing, qPCR, Western blotting, isometric force recordings (IFR), and colonic motor complex (CMC) force measurements. Our study showed that the transcriptional expression of Pdgfrα, c-Kit, P2ry1, Nos1, and Slc18a3, and the protein expression of nNOS, c-Kit, and ANO1 significantly increased with age from PW1 to PW5. In PW1 and PW3 mice, colonic migrating movement was not fully developed. In PW5 mice, rhythmic CMCs were recorded, similar to the CMC pattern described previously in adult mice. The inhibition of nNOS revealed excitatory and non-propulsive responses which are normally suppressed due to ongoing nitrergic inhibition. During postnatal development, molecular data demonstrated the establishment and expansion of ICC and PDGFRα+ cells, along with nitrergic and cholinergic nerves and purinergic receptors. Our findings are important for understanding the role of the SIP syncytium in generating and establishing CMCs in postnatal, developing murine colons.
Collapse
Affiliation(s)
- Zhihao Wu
- Department of General Surgery, Shanghai Children’s Medical Center, Shanghai Jiao Tong School of Medicine, Shanghai 200127, China
| | - Qianqian Wang
- Division of Gastroenterology and Hepatology, Shanghai Institute of Digestive Disease, Renji Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200001, China
| | - Fan Yang
- Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Ministry of Education, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Jiaxuan Wang
- Department of General Surgery, Shanghai Children’s Medical Center, Shanghai Jiao Tong School of Medicine, Shanghai 200127, China
| | - Yuying Zhao
- Department of General Surgery, Shanghai Children’s Medical Center, Shanghai Jiao Tong School of Medicine, Shanghai 200127, China
| | - Brian A. Perrino
- Department of Physiology and Cell Biology, School of Medicine, University of Nevada, Reno, NV 89557, USA
| | - Jie Chen
- Department of General Surgery, Shanghai Children’s Medical Center, Shanghai Jiao Tong School of Medicine, Shanghai 200127, China
| |
Collapse
|
5
|
Rodriguez-Zas SL, Southey NL, Rund L, Antonson AM, Nowak RA, Johnson RW. Prenatal and postnatal challenges affect the hypothalamic molecular pathways that regulate hormonal levels. PLoS One 2023; 18:e0292952. [PMID: 37851674 PMCID: PMC10584192 DOI: 10.1371/journal.pone.0292952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Accepted: 10/02/2023] [Indexed: 10/20/2023] Open
Abstract
This study aimed to improve our understanding of how the hypothalamus mediates the effects of prenatal and postnatal challenges on behavior and sensitivity to stimuli. A pig model of virally initiated maternal immune activation (MIA) was used to investigate potential interactions of the prenatal challenge both with sex and with postnatal nursing withdrawal. The hypothalami of 72 females and males were profiled for the effects of MIA and nursing withdrawal using RNA-sequencing. Significant differential expression (FDR-adjusted p value < 0.05) was detected in the profile of 222 genes. Genes involved in the Gene Ontology biological process of regulation of hormone levels tended to be over-expressed in individuals exposed to both challenges relative to individuals exposed to either one challenge, and most of these genes were over-expressed in MIA females relative to males across nursing levels. Differentially expressed genes included Fshb, Ttr, Agrp, Gata3, Foxa2, Tfap2b, Gh1, En2, Cga, Msx1, and Npy. The study also found that prenatal and postnatal challenges, as well as sex, impacted the regulation of neurotransmitter activity and immune effector processes in the hypothalamus. In particular, the olfactory transduction pathway genes were over-expressed in weaned MIA males, and several transcription factors were potentially found to target the differentially expressed genes. Overall, these results highlight how multiple environmental challenges can interact and affect the molecular mechanisms of the hypothalamus, including hormonal, immune response, and neurotransmitter processes.
Collapse
Affiliation(s)
- Sandra L. Rodriguez-Zas
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, United States of America
- Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, United States of America
- Neuroscience Program, University of Illinois at Urbana-Champaign, Urbana, IL, United States of America
- Department of Statistics, University of Illinois at Urbana-Champaign, Urbana, IL, United States of America
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL, United States of America
| | - Nicole L. Southey
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL, United States of America
| | - Laurie Rund
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, United States of America
| | - Adrienne M. Antonson
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, United States of America
- Neuroscience Program, University of Illinois at Urbana-Champaign, Urbana, IL, United States of America
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL, United States of America
| | - Romana A. Nowak
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, United States of America
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL, United States of America
| | - Rodney W. Johnson
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, United States of America
- Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, United States of America
- Neuroscience Program, University of Illinois at Urbana-Champaign, Urbana, IL, United States of America
| |
Collapse
|
6
|
Han W, Zheng Y, Wang L, An C. Disordered gut microbiota and changes in short-chain fatty acids and inflammatory processes in stress-vulnerable mice. J Neuroimmunol 2023; 383:578172. [PMID: 37659269 DOI: 10.1016/j.jneuroim.2023.578172] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 07/28/2023] [Accepted: 08/04/2023] [Indexed: 09/04/2023]
Abstract
Long-term exposure to chronic stress increases the incidence of depression. However, chronic stress is an associated risk factor in only a subset of individuals. Inflammation has been identified as a putative mechanism promoting stress vulnerability. Because of the gut microbiota's potential role as a source of inflammatory substances, short-chain fatty acids (SCFAs) may exert their influence on inflammation, emotional states, and cognition via the gut-brain axis. In this study, Classic behavioral tests were used to categorize C57BL/6 J mice into a CUMS-vulnerable and a CUMS-resilient group after they were exposed to chronic unpredictable mild stress (CUMS). We compared the 16S ribosomal RNA (rRNA) gene sequences retrieved from fecal samples between control, CUMS-vulnerable, and CUMS-resilient mice. SCFAs in fecal samples were detected by liquid chromatography and gas chromatography-mass spectrometry. Hippocampal cytokine production and TLR4/MYD88/NF-κB inflammatory pathway activation were evaluated using enzyme-linked immunosorbent assays (ELISAs) and western blotting. Then, we supplemented SCFAs in CUMS mice. we observed depression-like behavior and the expression of TLR4/MYD88/NF-κB inflammatory pathway in hippocampus of SCFAs supplementation mice. Susceptible mice to CUMS showed more severe symptoms of depression and anxiety, α diversity was significantly different, as well as higher expression of interleukin (IL)-1β and TLR4/MYD88/NF-κB inflammatory pathway components in the hippocampus. SCFA levels in the feces were significantly higher in CUMS-resilient mice than in control mice. Depressive behavior was reversed in CUMS-SCFAs group, and the protein level of TLR4/MYD88/NF-κB in hippocampus was decreased. Overall, these results provide new light on the possible involvement of the microbiome in the gut-brain axis development in depressive disorder and provide a theoretical basis for identifying novel therapeutic targets.
Collapse
Affiliation(s)
- Wenjuan Han
- Department of Psychiatry, The First Hospital of Hebei Medical University, The Mental Health Center of Hebei Medical University, The Mental Health Institute of Hebei Medical University, Shijiazhuang 050031, Hebei, China; Department of Psychiatry and Psychology, The Second Hospital of Hebei Medical University, Shijiazhuang 050005, Hebei, China
| | - Yaxin Zheng
- Department of Psychiatry, The First Hospital of Hebei Medical University, The Mental Health Center of Hebei Medical University, The Mental Health Institute of Hebei Medical University, Shijiazhuang 050031, Hebei, China
| | - Lan Wang
- Department of Psychiatry, The First Hospital of Hebei Medical University, The Mental Health Center of Hebei Medical University, The Mental Health Institute of Hebei Medical University, Shijiazhuang 050031, Hebei, China
| | - Cuixia An
- Department of Psychiatry, The First Hospital of Hebei Medical University, The Mental Health Center of Hebei Medical University, The Mental Health Institute of Hebei Medical University, Shijiazhuang 050031, Hebei, China.
| |
Collapse
|
7
|
Maletta T, Palummieri M, Correa J, Holahan MR. Preadolescent exposure to a sexually mature, unrelated male rat reduces postadolescent social recognition memory and CA2 c-Fos labeling. Front Behav Neurosci 2023; 17:1104866. [PMID: 36778132 PMCID: PMC9908592 DOI: 10.3389/fnbeh.2023.1104866] [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: 11/22/2022] [Accepted: 01/13/2023] [Indexed: 01/27/2023] Open
Abstract
Introduction Social memory involves social recognition: the ability to discriminate between two or more conspecifics when one has been previously encountered. The CA2 region of the hippocampus has been implicated in social memory, as lesions and dysfunction to this area lead to social memory impairments. A variety of psychogenic manipulations during postnatal sensitive developmental periods are associated with social memory impairments later in life. Methods In this study, we exposed preadolescent rats to a sexually, mature unrelated male and examined whether this was associated with changes in postadolescent social memory and c-Fos labeling in the CA2 region. Male and female Long-Evans rats were exposed to a male, adult rat on postnatal days 19-21 (P19-21). Social memory was measured during the postadolescent period and defined as increased interactions towards a novel age-matched rat in contrast to a previously-encountered age-matched rat. After the test, rats were euthanized and brain tissue was then collected to quantify c-Fos labeling within the CA2 region. Results Compared to home cage controls and controls not exposed to the adult male, male and female rats exposed to the unrelated adult during preadolescence were unable to discriminate between a novel and previously encountered conspecific during the postadolescent test showing social memory deficits. The groups that showed social recognition deficits also had significantly fewer c-Fos-positive cells within the CA2 region compared to the control groups. Discussion These findings indicate that threatening psychogenic encounters during preadolescence can have detrimental long-term effects on social memory potentially via disrupted activity in the CA2 hippocampal region.
Collapse
Affiliation(s)
- Teresa Maletta
- Department of Neuroscience, Carleton University, Ottawa, ON, Canada
| | | | - Jeff Correa
- Department of Neuroscience, Carleton University, Ottawa, ON, Canada
| | | |
Collapse
|
8
|
Ham GX, Lim KE, Augustine GJ, Leong V. Synchrony in parent-offspring social interactions across development: A cross-species review of rodents and humans. J Neuroendocrinol 2023:e13241. [PMID: 36929715 DOI: 10.1111/jne.13241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 01/26/2023] [Accepted: 01/31/2023] [Indexed: 02/11/2023]
Abstract
In humans, parent-child neural synchrony has been shown to support early communication, social attunement and learning. Further, some animal species (including rodents and bats) are now known to share neural synchrony during certain forms of social behaviour. However, very little is known about the developmental origins and sequelae of neural synchrony, and whether this neural mechanism might play a causal role in the control of social and communicative behaviour across species. Rodent models are optimal for exploring such questions of causality, with a plethora of tools available for both disruption/induction (optogenetics) and even mechanistic dissection of synchrony-induction pathways (in vivo electrical or optical recording of neural activity). However, before the benefits of rodent models for advancing research on parent-infant synchrony can be realised, it is first important to address a gap in understanding the forms of parent-pup synchrony that occur during rodent development, and how these social relationships evolve over time. Accordingly, this review seeks to identify parent-pup social behaviours that could potentially drive or facilitate synchrony and to discuss key differences or limitations when comparing mouse to human models of parent-infant synchrony. Uniquely, our review will focus on parent-pup dyadic social behaviours that have particular analogies to the human context, including instrumental, social interactive and vocal communicative behaviours. This review is intended to serve as a primer on the study of neurobehavioral synchrony across human and rodent dyadic developmental models.
Collapse
Affiliation(s)
- Gao Xiang Ham
- Psychology, School of Social Sciences, Nanyang Technological University, Singapore, Singapore
- Lee Kong China School of Medicine, Nanyang Technological University, Singapore, Singapore
| | - Kai En Lim
- School of Biological Sciences, Nanyang Technological University, Singapore, Singapore
| | - George J Augustine
- Lee Kong China School of Medicine, Nanyang Technological University, Singapore, Singapore
| | - Victoria Leong
- Psychology, School of Social Sciences, Nanyang Technological University, Singapore, Singapore
- Department of Pediatrics, University of Cambridge, Cambridge, UK
| |
Collapse
|
9
|
Dubied M, Montuire S, Navarro N. Functional constraints channel mandible shape ontogenies in rodents. ROYAL SOCIETY OPEN SCIENCE 2022; 9:220352. [PMID: 36300135 PMCID: PMC9579770 DOI: 10.1098/rsos.220352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Accepted: 08/31/2022] [Indexed: 06/16/2023]
Abstract
In mammals, postnatal growth plays an essential role in the acquisition of the adult shape. During this period, the mandible undergoes many changing functional constraints, leading to spatialization of bone formation and remodelling to accommodate various dietary and behavioural changes. The interactions between the bone, muscles and teeth drive this developmental plasticity, which, in turn, could lead to convergences in the developmental processes constraining the directionality of ontogenies, their evolution and thus the adult shape variation. To test the importance of the interactions between tissues in shaping the ontogenetic trajectories, we compared the mandible shape at five postnatal stages on three rodents: the house mouse, the Mongolian gerbil and the golden hamster, using geometric morphometrics. After an early shape differentiation, by both longer gestation and allometric scaling in gerbils or early divergence of postnatal ontogeny in hamsters in comparison with the mouse, the ontogenetic trajectories appear more similar around weaning. The changes in muscle load associated with new food processing and new behaviours at weaning seem to impose similar physical constraints on the mandible, driving the convergences of the ontogeny at that stage despite an early anatomical differentiation. Nonetheless, mice present a rather different timing compared with gerbils or hamsters.
Collapse
Affiliation(s)
- Morgane Dubied
- Biogéosciences, UMR 6282 CNRS, EPHE, Université Bourgogne Franche-Comté, 6 bd Gabriel, 21000 Dijon, France
| | - Sophie Montuire
- Biogéosciences, UMR 6282 CNRS, EPHE, Université Bourgogne Franche-Comté, 6 bd Gabriel, 21000 Dijon, France
- EPHE, PSL University, 75014 Paris, France
| | - Nicolas Navarro
- Biogéosciences, UMR 6282 CNRS, EPHE, Université Bourgogne Franche-Comté, 6 bd Gabriel, 21000 Dijon, France
- EPHE, PSL University, 75014 Paris, France
| |
Collapse
|
10
|
Bartkowska K, Tepper B, Turlejski K, Djavadian R. Postnatal and Adult Neurogenesis in Mammals, Including Marsupials. Cells 2022; 11:cells11172735. [PMID: 36078144 PMCID: PMC9455070 DOI: 10.3390/cells11172735] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2022] [Revised: 08/27/2022] [Accepted: 08/29/2022] [Indexed: 12/11/2022] Open
Abstract
In mammals, neurogenesis occurs during both embryonic and postnatal development. In eutherians, most brain structures develop embryonically; conversely, in marsupials, a number of brain structures develop after birth. The exception is the generation of granule cells in the dentate gyrus, olfactory bulb, and cerebellum of eutherian species. The formation of these structures starts during embryogenesis and continues postnatally. In both eutherians and marsupials, neurogenesis continues in the subventricular zone of the lateral ventricle (SVZ) and the dentate gyrus of the hippocampal formation throughout life. The majority of proliferated cells from the SVZ migrate to the olfactory bulb, whereas, in the dentate gyrus, cells reside within this structure after division and differentiation into neurons. A key aim of this review is to evaluate advances in understanding developmental neurogenesis that occurs postnatally in both marsupials and eutherians, with a particular emphasis on the generation of granule cells during the formation of the olfactory bulb, dentate gyrus, and cerebellum. We debate the significance of immature neurons in the piriform cortex of young mammals. We also synthesize the knowledge of adult neurogenesis in the olfactory bulb and the dentate gyrus of marsupials by considering whether adult-born neurons are essential for the functioning of a given area.
Collapse
Affiliation(s)
- Katarzyna Bartkowska
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, 02-093 Warsaw, Poland
| | - Beata Tepper
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, 02-093 Warsaw, Poland
| | - Krzysztof Turlejski
- Faculty of Biology and Environmental Sciences, Cardinal Stefan Wyszynski University in Warsaw, 01-938 Warsaw, Poland
| | - Ruzanna Djavadian
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, 02-093 Warsaw, Poland
- Correspondence:
| |
Collapse
|
11
|
Marazziti D, Diep PT, Carter S, Carbone MG. Oxytocin: An Old Hormone, A Novel Psychotropic Drug And Possible Use In Treating Psychiatric Disorders. Curr Med Chem 2022; 29:5615-5687. [PMID: 35894453 DOI: 10.2174/0929867329666220727120646] [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: 11/02/2021] [Revised: 03/17/2022] [Accepted: 04/19/2022] [Indexed: 11/22/2022]
Abstract
BACKGROUND Oxytocin is a nonapeptide synthesized in the paraventricular and supraoptic nuclei of the hypothalamus. Historically, this molecule has been involved as a key factor in the formation of infant attachment, maternal behavior and pair bonding and, more generally, in linking social signals with cognition, behaviors and reward. In the last decades, the whole oxytocin system has gained a growing interest as it was proposed to be implicated in etiopathogenesis of several neurodevelopmental and neuropsychiatric disorders. METHODS With the main goal of an in-depth understanding of the oxytocin role in the regulation of different functions and complex behaviors as well as its intriguing implications in different neuropsychiatric disorders, we performed a critical review of the current state of art. We carried out this work through PubMed database up to June 2021 with the search terms: 1) "oxytocin and neuropsychiatric disorders"; 2) "oxytocin and neurodevelopmental disorders"; 3) "oxytocin and anorexia"; 4) "oxytocin and eating disorders"; 5) "oxytocin and obsessive-compulsive disorder"; 6) "oxytocin and schizophrenia"; 7) "oxytocin and depression"; 8) "oxytocin and bipolar disorder"; 9) "oxytocin and psychosis"; 10) "oxytocin and anxiety"; 11) "oxytocin and personality disorder"; 12) "oxytocin and PTSD". RESULTS Biological, genetic, and epigenetic studies highlighted quality and quantity modifications in the expression of oxytocin peptide or in oxytocin receptor isoforms. These alterations would seem to be correlated with a higher risk of presenting several neuropsychiatric disorders belonging to different psychopathological spectra. Collaterally, the exogenous oxytocin administration has shown to ameliorate many neuropsychiatric clinical conditions. CONCLUSION Finally, we briefly analyzed the potential pharmacological use of oxytocin in patient with severe symptomatic SARS-CoV-2 infection due to its anti-inflammatory, anti-oxidative and immunoregulatory properties.
Collapse
Affiliation(s)
- Donatella Marazziti
- Department of Clinical and Experimental Medicine, Section of Psychiatry, University of Pisa, Italy.,Saint Camillus International University of Health and Medical Sciences, Rome, Italy
| | - Phuoc-Tan Diep
- Department of Histopathology, Royal Lancaster Infirmary, University Hospitals of Morecambe Bay NHS Foundation Trust, Lancaster, United Kingdom
| | - Sue Carter
- Director Kinsey Institute, Indiana University, Bloomington, IN, USA
| | - Manuel G Carbone
- Department of Medicine and Surgery, Division of Psychiatry, University of Insubria, 21100 Varese, Italy
| |
Collapse
|
12
|
Lisboa PC, Miranda RA, Souza LL, Moura EG. Can breastfeeding affect the rest of our life? Neuropharmacology 2021; 200:108821. [PMID: 34610290 DOI: 10.1016/j.neuropharm.2021.108821] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 08/17/2021] [Accepted: 09/30/2021] [Indexed: 12/31/2022]
Abstract
The breastfeeding period is one of the most important critical windows in our development, since milk, our first food after birth, contains several compounds, such as macronutrients, micronutrients, antibodies, growth factors and hormones that benefit human health. Indeed, nutritional, and environmental alterations during lactation, change the composition of breast milk and induce alterations in the child's development, such as obesity, leading to the metabolic dysfunctions, cardiovascular diseases and neurobehavioral disorders. This review is based on experimental animal models, most of them in rodents, and summarizes the impact of an adequate breast milk supply in view of the developmental origins of health and disease (DOHaD) concept, which has been proposed by researchers in the areas of epidemiology and basic science from around the world. Here, experimental advances in understanding the programming during breastfeeding were compiled with the purpose of generating knowledge about the genesis of chronic noncommunicable diseases and to guide the development of public policies to deal with and prevent the problems arising from this phenomenon. This review article is part of the special issue on "Cross talk between periphery and brain".
Collapse
Affiliation(s)
- Patricia C Lisboa
- Laboratory of Endocrine Physiology, Department of Physiological Sciences, Roberto Alcantara Gomes Biology Institute, State University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil.
| | - Rosiane A Miranda
- Laboratory of Endocrine Physiology, Department of Physiological Sciences, Roberto Alcantara Gomes Biology Institute, State University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Luana L Souza
- Laboratory of Endocrine Physiology, Department of Physiological Sciences, Roberto Alcantara Gomes Biology Institute, State University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Egberto G Moura
- Laboratory of Endocrine Physiology, Department of Physiological Sciences, Roberto Alcantara Gomes Biology Institute, State University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| |
Collapse
|
13
|
Hastings-Tolsma M, Stoffel RT, Quintana AS, Kane RR, Turner J, Wang X. Effect of Rubus idaeus L. Consumption During Pregnancy on Maternal Mice and Their Offspring. J Med Food 2021; 25:183-191. [PMID: 34714139 PMCID: PMC8867106 DOI: 10.1089/jmf.2021.0078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The trigger for human labor is a scientific mystery. This research examined Rubus idaeus (RI), commonly referred to as red raspberry, which is widely purported to be efficacious in promoting parturition processes and favorable birth outcomes. This randomized controlled trial sought to determine the influence of RI consumption during gestation on C57BL/6N Tac mice and their offspring. The aims of this study were to (1) determine differences in the length of gestation, gestational weight gain, and litter size where RI is consumed daily at varied strengths and (2) determine differences in offspring characteristics and behavior where maternal RI consumption occurred. Once paired, mice were randomly assigned to one of three groups: placebo (n = 10) receiving plain water, RI aqueous extract fluid of 1.78 mg/mL (n = 10), or RI aqueous extract fluid of 2.66 mg/mL (n = 10). All received the same standardized diet throughout gestation. Pregnant mice were weighed with chow intake and fluid consumption determined daily. Gestation length and litter size were recorded at the time of birth. Differences in offspring characteristics were also determined and included physical characteristics (weight, physical development) and neuromotor reflexes and behaviors (locomotive abilities, geotaxis reflex, cliff avoidance reflex, and swimming development). When compared with controls, high-dose RI ingestion resulted in shorter length of gestation and smaller litter size (P ≤ .05). There was also an increase in fluid consumption and a decrease in pup weights on postnatal day 4 and 5 with RI treatment (P ≤ .05). Altogether, results suggest that RI influences parturition and fecundity processes with transplacental exposure impacting offspring characteristics.
Collapse
Affiliation(s)
- Marie Hastings-Tolsma
- Louise Herrington School of Nursing, Baylor University, Dallas, Texas, USA.,Department of Nursing, University of Johannesburg, Johannesburg, South Africa
| | - Ryan T Stoffel
- Animal Program Director & Attending Veterinarian, Baylor University, Waco, Texas, USA
| | | | - Robert R Kane
- Department of Chemistry and Biochemistry, Baylor University, Waco, Texas, USA.,Director, Institute of Biomedical Studies, Baylor University, Waco, Texas, USA
| | - Jacob Turner
- Department of Mathematics & Statistics, Stephen F. Austin State University, Nacogdoches, Texas, USA
| | - Xuan Wang
- Biostatistician II, Baylor Scott & White Research Institute, Dallas, Texas, USA
| |
Collapse
|
14
|
Dubied M, Montuire S, Navarro N. Commonalities and evolutionary divergences of mandible shape ontogenies in rodents. J Evol Biol 2021; 34:1637-1652. [PMID: 34449936 DOI: 10.1111/jeb.13920] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 08/17/2021] [Accepted: 08/19/2021] [Indexed: 11/27/2022]
Abstract
In mammals, significant changes take place during postnatal growth, linked to changes in diet (from sucking to gnawing). During this period, mandible development is highly interconnected with muscle growth and the epigenetic interactions between muscle and bone control the spatialization of bone formation and remodelling in response to biomechanical strain. This mechanism contributes to postnatal developmental plasticity and may have influenced the course of evolutionary divergences between species and clades. We sought to model postnatal changes at a macroevolutionary scale by analysing ontogenetic trajectories of mandible shape across 16 species belonging mainly to two suborders of Rodents, Myomorpha and Hystricomorpha, which differ in muscle attachments, tooth growth and life-history traits. Myomorpha species present a much stronger magnitude of changes over a shorter growth period. Among Hystricomorpha, part of the observed adult shape is set up prenatally, and most postnatal trajectories are genus-specific, which agrees with nonlinear developmental trajectories over longer gestational periods. Beside divergence at large scale, we find some collinearities between evolutionary and developmental trajectories. A common developmental trend was also observed, leading to enlargement of the masseter fossa during postnatal growth. The tooth growth, especially hypselodonty, seems to be a major driver of divergences of postnatal trajectories. These muscle- and tooth-related effects on postnatal trajectories suggest opportunities for developmental plasticity in the evolution of the mandible shape, opportunities that may have differed across Rodent clades.
Collapse
Affiliation(s)
- Morgane Dubied
- Biogeosciences, UMR 6282 CNRS, EPHE, Université Bourgogne Franche-Comté, Dijon, France
| | - Sophie Montuire
- Biogeosciences, UMR 6282 CNRS, EPHE, Université Bourgogne Franche-Comté, Dijon, France.,EPHE, PSL University, Paris, France
| | - Nicolas Navarro
- Biogeosciences, UMR 6282 CNRS, EPHE, Université Bourgogne Franche-Comté, Dijon, France.,EPHE, PSL University, Paris, France
| |
Collapse
|
15
|
Influence of rearing environment on the development of social behavior in male water voles (Arvicola amphibius). Mamm Biol 2021. [DOI: 10.1007/s42991-021-00170-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
16
|
Keever-Keigher MR, Zhang P, Bolt CR, Rymut HE, Antonson AM, Caputo MP, Houser AK, Hernandez AG, Southey BR, Rund LA, Johnson RW, Rodriguez-Zas SL. Interacting impact of maternal inflammatory response and stress on the amygdala transcriptome of pigs. G3 (BETHESDA, MD.) 2021; 11:jkab113. [PMID: 33856433 PMCID: PMC8496236 DOI: 10.1093/g3journal/jkab113] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Accepted: 03/17/2021] [Indexed: 12/13/2022]
Abstract
Changes at the molecular level capacitate the plasticity displayed by the brain in response to stress stimuli. Weaning stress can trigger molecular changes that influence the physiology of the offspring. Likewise, maternal immune activation (MIA) during gestation has been associated with behavior disorders and molecular changes in the amygdala of the offspring. This study advances the understanding of the effects of pre- and postnatal stressors in amygdala gene networks. The amygdala transcriptome was profiled on female and male pigs that were either exposed to viral-elicited MIA or not and were weaned or nursed. Overall, 111 genes presented interacting or independent effects of weaning, MIA, or sex (FDR-adjusted P-value <0.05). PIGY upstream reading frame and orthodenticle homeobox 2 are genes associated with MIA-related neurological disorders, and presented significant under-expression in weaned relative to nursed pigs exposed to MIA, with a moderate pattern observed in non-MIA pigs. Enriched among the genes presenting highly over- or under-expression profiles were 24 Kyoto Encyclopedia of Genes and Genomes pathways including inflammation, and neurological disorders. Our results indicate that MIA and sex can modulate the effect of weaning stress on the molecular mechanisms in the developing brain. Our findings can help identify molecular targets to ameliorate the effects of pre- and postnatal stressors on behaviors regulated by the amygdala such as aggression and feeding.
Collapse
Affiliation(s)
- Marissa R Keever-Keigher
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61820, USA
| | - Pan Zhang
- Illinois Informatics Institute, University of Illinois at Urbana-Champaign, Urbana, IL 61820, USA
| | - Courtni R Bolt
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61820, USA
| | - Haley E Rymut
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61820, USA
| | - Adrienne M Antonson
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61820, USA
| | - Megan P Caputo
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61820, USA
| | - Alexandra K Houser
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61820, USA
| | - Alvaro G Hernandez
- High-Throughput Sequencing and Genotyping Unit, Roy J. Carver Biotechnology Center, University of Illinois at Urbana-Champaign, Urbana, IL 61820, USA
| | - Bruce R Southey
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61820, USA
| | - Laurie A Rund
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61820, USA
| | - Rodney W Johnson
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61820, USA
- Neuroscience Program, University of Illinois at Urbana-Champaign, Urbana, IL 61820, USA
| | - Sandra L Rodriguez-Zas
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61820, USA
- Illinois Informatics Institute, University of Illinois at Urbana-Champaign, Urbana, IL 61820, USA
- Neuroscience Program, University of Illinois at Urbana-Champaign, Urbana, IL 61820, USA
- Department of Statistics, University of Illinois at Urbana-Champaign, Urbana, IL 61820, USA
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL 61820, USA
| |
Collapse
|
17
|
Rymut HE, Rund LA, Bolt CR, Villamil MB, Southey BR, Johnson RW, Rodriguez-Zas SL. The Combined Effect of Weaning Stress and Immune Activation during Pig Gestation on Serum Cytokine and Analyte Concentrations. Animals (Basel) 2021; 11:2274. [PMID: 34438732 PMCID: PMC8388404 DOI: 10.3390/ani11082274] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Revised: 07/23/2021] [Accepted: 07/30/2021] [Indexed: 12/17/2022] Open
Abstract
Weaning stress can elicit changes in the metabolic, hormone and immune systems of pigs and interact with prolonged disruptions stemming from maternal immune activation (MIA) during gestation. The present study advances the characterization of the combined effects of weaning stress and MIA on blood chemistry, immune and hormone indicators that inform on the health of pigs. Three-week-old female and male offspring of control gilts or gilts infected with the porcine reproductive and respiratory syndrome virus were allocated to weaned or nursed groups. The anion gap and bilirubin profiles suggest that MIA enhances tolerance to the effects of weaning stress. Interleukin 1 beta and interleukin 2 were highest among weaned MIA females, and cortisol was higher among weaned relative to nursed pigs across sexes. Canonical discriminant analysis demonstrated that weaned and nursed pigs have distinct chemistry profiles, whereas MIA and control pigs have distinct cytokine profiles. The results from this study can guide management practices that recognize the effects of the interaction between MIA and weaning stress on the performance and health of pigs.
Collapse
Affiliation(s)
- Haley E. Rymut
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA; (H.E.R.); (L.A.R.); (C.R.B.); (B.R.S.); (R.W.J.)
| | - Laurie A. Rund
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA; (H.E.R.); (L.A.R.); (C.R.B.); (B.R.S.); (R.W.J.)
| | - Courtni R. Bolt
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA; (H.E.R.); (L.A.R.); (C.R.B.); (B.R.S.); (R.W.J.)
| | - Maria B. Villamil
- Department of Crop Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA;
| | - Bruce R. Southey
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA; (H.E.R.); (L.A.R.); (C.R.B.); (B.R.S.); (R.W.J.)
| | - Rodney W. Johnson
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA; (H.E.R.); (L.A.R.); (C.R.B.); (B.R.S.); (R.W.J.)
| | - Sandra L. Rodriguez-Zas
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA; (H.E.R.); (L.A.R.); (C.R.B.); (B.R.S.); (R.W.J.)
- Department of Crop Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA;
- Department of Statistics, University of Illinois at Urbana-Champaign, Urbana, IL 61820, USA
- Center for Digital Agriculture, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| |
Collapse
|
18
|
de Guia RM, Hassing AS, Ma T, Plucinska K, Holst B, Gerhart-Hines Z, Emanuelli B, Treebak JT. Ablation of Nampt in AgRP neurons leads to neurodegeneration and impairs fasting- and ghrelin-mediated food intake. FASEB J 2021; 35:e21450. [PMID: 33788980 DOI: 10.1096/fj.202002740r] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 01/15/2021] [Accepted: 02/01/2021] [Indexed: 12/13/2022]
Abstract
Agouti-related protein (AgRP) neurons in the arcuate nucleus of the hypothalamus regulates food intake and whole-body metabolism. NAD+ regulates multiple cellular processes controlling energy metabolism. Yet, its role in hypothalamic AgRP neurons to control food intake is poorly understood. Here, we aimed to assess whether genetic deletion of nicotinamide phosphoribosyltransferase (Nampt), a rate-limiting enzyme in NAD+ production, affects AgRP neuronal function to impact whole-body metabolism and food intake. Metabolic parameters during fed and fasted states, and upon systemic ghrelin and leptin administration were studied in AgRP-specific Nampt knockout (ARNKO) mice. We monitored neuropeptide expression levels and density of AgRP neurons in ARNKO mice from embryonic to adult age. NPY cells were used to determine effects of NAMPT inhibition on neuronal viability, energy status, and oxidative stress in vitro. In these cells, NAD+ depletion reduced ATP levels, increased oxidative stress, and promoted cell death. Agrp expression in the hypothalamus of ARNKO mice gradually decreased after weaning due to progressive AgRP neuron degeneration. Adult ARNKO mice had normal glucose and insulin tolerance, but exhibited an elevated respiratory exchange ratio (RER) when fasted. Remarkably, fasting-induced food intake was unaffected in ARNKO mice when evaluated in metabolic cages, but fasting- and ghrelin-induced feeding and body weight gain decreased in ARNKO mice when evaluated outside metabolic cages. Collectively, deletion of Nampt in AgRP neurons causes progressive neurodegeneration and impairs fasting and ghrelin responses in a context-dependent manner. Our data highlight an essential role of Nampt in AgRP neuron function and viability.
Collapse
Affiliation(s)
- Roldan Medina de Guia
- Integrative Metabolism and Environmental Influences, Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Anna S Hassing
- Integrative Metabolism and Environmental Influences, Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Tao Ma
- Integrative Metabolism and Environmental Influences, Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Kaja Plucinska
- Integrative Metabolism and Environmental Influences, Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Birgitte Holst
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Zach Gerhart-Hines
- Integrative Metabolism and Environmental Influences, Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Brice Emanuelli
- Integrative Metabolism and Environmental Influences, Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Jonas T Treebak
- Integrative Metabolism and Environmental Influences, Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| |
Collapse
|
19
|
Duan J, Huang Y, Tan X, Chai T, Wu J, Zhang H, Li Y, Hu X, Zheng P, Ji P, Zhao L, Yang D, Fang L, Song J, Xie P. Characterization of gut microbiome in mice model of depression with divergent response to escitalopram treatment. Transl Psychiatry 2021; 11:303. [PMID: 34016954 PMCID: PMC8138009 DOI: 10.1038/s41398-021-01428-1] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 04/21/2021] [Accepted: 05/04/2021] [Indexed: 12/27/2022] Open
Abstract
Depression is a common and heterogeneous mental disorder. Although several antidepressants are available to treat the patients with depression, the factors which could affect and predict the treatment response remain unclear. Here, we characterize the longitudinal changes of microbial composition and function during escitalopram treatment in chronic unpredictable mild stress (CUMS) mice model of depression based on 16 S rRNA sequencing and metabolomics. Consequently, we found that escitalopram (ESC) administration serves to increase the alpha-diversity of the gut microbiome in ESC treatment group. The microbial signatures between responder (R) and non-responder (NR) groups were significantly different. The R group was mainly characterized by increased relative abundances of genus Prevotellaceae_UCG-003, and depleted families Ruminococcaceae and Lactobacillaceae relative to NR group. Moreover, we identified 15 serum metabolites responsible for discriminating R and NR group. Those differential metabolites were mainly involved in phospholipid metabolism. Significantly, the bacterial OTUs belonging to family Lachnospiraceae, Helicobacteraceae, and Muribaculaceae formed strong co-occurring relationships with serum metabolites, indicating alternations of gut microbiome and metabolites as potential mediators in efficiency of ESC treatment. Together, our study demonstrated that the alterations of microbial compositions and metabolic functions might be relevant to the different response to ESC, which shed new light in uncovering the mechanisms of differences in efficacy of antidepressants.
Collapse
Affiliation(s)
- Jiajia Duan
- NHC Key Laboratory of Diagnosis and Treatment on Brain Functional Diseases, Chongqing Medical University, Chongqing, China
- The M.O.E. Key Laboratory of Laboratory Medical Diagnostics, the College of Laboratory Medicine, Chongqing Medical University, Chongqing, China
| | - Yu Huang
- NHC Key Laboratory of Diagnosis and Treatment on Brain Functional Diseases, Chongqing Medical University, Chongqing, China
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Xunmin Tan
- NHC Key Laboratory of Diagnosis and Treatment on Brain Functional Diseases, Chongqing Medical University, Chongqing, China
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Tingjia Chai
- NHC Key Laboratory of Diagnosis and Treatment on Brain Functional Diseases, Chongqing Medical University, Chongqing, China
- College of Biomedical Engineering, Chongqing Medical University, Chongqing, China
| | - Jing Wu
- NHC Key Laboratory of Diagnosis and Treatment on Brain Functional Diseases, Chongqing Medical University, Chongqing, China
- The M.O.E. Key Laboratory of Laboratory Medical Diagnostics, the College of Laboratory Medicine, Chongqing Medical University, Chongqing, China
| | - Hanping Zhang
- NHC Key Laboratory of Diagnosis and Treatment on Brain Functional Diseases, Chongqing Medical University, Chongqing, China
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Yifan Li
- NHC Key Laboratory of Diagnosis and Treatment on Brain Functional Diseases, Chongqing Medical University, Chongqing, China
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Xi Hu
- NHC Key Laboratory of Diagnosis and Treatment on Brain Functional Diseases, Chongqing Medical University, Chongqing, China
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Peng Zheng
- NHC Key Laboratory of Diagnosis and Treatment on Brain Functional Diseases, Chongqing Medical University, Chongqing, China
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Ping Ji
- College of Stomatology, Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory for Oral Diseases and Biomedical Sciences, Chongqing, China
| | - Libo Zhao
- Department of Neurology, Yongchuan Hospital of Chongqing Medical University, Chongqing, China
| | - Deyu Yang
- Department of Neurology, Yongchuan Hospital of Chongqing Medical University, Chongqing, China
| | - Liang Fang
- Department of Neurology, Yongchuan Hospital of Chongqing Medical University, Chongqing, China
| | - Jinlin Song
- College of Stomatology, Chongqing Medical University, Chongqing, China.
- Chongqing Key Laboratory for Oral Diseases and Biomedical Sciences, Chongqing, China.
- Key Laboratory of Psychoseomadsy, Stomatological Hospital of Chongqing Medical University, Chongqing, China.
| | - Peng Xie
- NHC Key Laboratory of Diagnosis and Treatment on Brain Functional Diseases, Chongqing Medical University, Chongqing, China.
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.
- Key Laboratory of Psychoseomadsy, Stomatological Hospital of Chongqing Medical University, Chongqing, China.
| |
Collapse
|
20
|
Hiadlovská Z, Hamplová P, Berchová Bímová K, Macholán M, Vošlajerová Bímová B. Ontogeny of social hierarchy in two European house mouse subspecies and difference in the social rank of dispersing males. Behav Processes 2021; 183:104316. [PMID: 33421530 DOI: 10.1016/j.beproc.2021.104316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 12/25/2020] [Accepted: 01/02/2021] [Indexed: 10/22/2022]
Abstract
In social species such as house mouse, being dominant is vital. Determination of dominance may start early in life and vary during ontogeny. We asked whether pre-pubertal and adolescent behaviour predicts the rank a male mouse finally obtains. Moreover, we asked how dominant vs. subordinate adults differ in exploration and propensity to emigrate. We studied fraternal pairs as the simple social units, from weaning to full-grown adulthood. By utilizing two mouse subspecies known to differ in many behavioural traits, we take into account any potential subspecific idiosyncrasies. We did not find any significant effect of future social status on any behavioural type displayed before adulthood, but the subspecies themselves differ in behaviours prevailing in particular ontogeny phases. While musculus males start as more pro-social, they later became significantly more passive. Conversely, domesticus are slightly less passive at the beginning but significantly more proactive close to adulthood and rapidly establishing hierarchy through overt conflicts. We found no difference in exploration between ranks, however, domesticus males were significantly more active in an unknown area than musculus. Most importantly, while dominant domesticus males seem to be more prone to emigration, in musculus it was the subordinate males who left base significantly more often. This is consistent with extended contests of musculus males over dominance found in this study as well as with differences in endocrinological changes we have reported previously.
Collapse
Affiliation(s)
- Zuzana Hiadlovská
- Laboratory of Mammalian Evolutionary Genetics, Institute of Animal Physiology and Genetics, Czech Academy of Sciences, Brno, Czech Republic.
| | - Petra Hamplová
- Laboratory of Mammalian Evolutionary Genetics, Institute of Animal Physiology and Genetics, Czech Academy of Sciences, Brno, Czech Republic; Department of Botany and Zoology, Faculty of Science, Masaryk University, Brno, Czech Republic.
| | - Kateřina Berchová Bímová
- Department of Applied Ecology, Faculty of Environmental Sciences, Czech University of Life Sciences, Praha, Czech Republic.
| | - Miloš Macholán
- Laboratory of Mammalian Evolutionary Genetics, Institute of Animal Physiology and Genetics, Czech Academy of Sciences, Brno, Czech Republic; Department of Botany and Zoology, Faculty of Science, Masaryk University, Brno, Czech Republic.
| | - Barbora Vošlajerová Bímová
- Laboratory of Mammalian Evolutionary Genetics, Institute of Animal Physiology and Genetics, Czech Academy of Sciences, Brno, Czech Republic.
| |
Collapse
|
21
|
Grífols R, Zamora C, Ortega-Saez I, Azkona G. Postweaning Grouping as a Strategy to Reduce Singly Housed Male Mice. Animals (Basel) 2020; 10:ani10112135. [PMID: 33212955 PMCID: PMC7698342 DOI: 10.3390/ani10112135] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Revised: 11/12/2020] [Accepted: 11/16/2020] [Indexed: 11/16/2022] Open
Abstract
Simple Summary It is important to raise laboratory mice in stable groups. However, sometimes we can find litters with only one male. Unfortunately, age is a factor to consider when grouping a newly weaned mouse with other males due to inter-male aggressiveness. Our results showed that CD1 and SCID Beige newly weaned males can be safely grouped with juvenile and pubescent mice. However, only juvenile C57BL/6J will accept a newly weaned mouse as a new member of the group. This strategy could be helpful to reduce the number of singly housed male mice used for scientific purposes. Abstract Rearing laboratory mice in groups is important since social isolation after weaning induces brain alterations, which entails behavioral abnormalities in adulthood. Age is an important factor when grouping males of different litters due to inter-male aggressiveness. The aim of this study was to determine whether newly weaned mice could safely be grouped with late juvenile or early and late pubescent mice, and whether cage cleaning, the number of the hosting group members and testosterone plasma levels have any influence. Newly weaned C57BL/6J, CD1, and SCID Beige male mice were systematically grouped with same strain late juvenile, early or late pubescent male mice in clean or dirty cages of 1, 2 or 3 hosting members. We also analyzed plasma testosterone levels at different postnatal days. Our result showed that only strain and hosting male’s age influence agonistic behavior toward newly weaned mice. Thus, in order not to house a recently weaned male alone, we would recommend grouping it with late juvenile same strain mice in all studied strains. In the same way, CD1 and SCID Beige pubescent mice will admit a newly weaned mouse in their group. However, we would not recommend grouping newly weaned and pubescent C57BL/6J males.
Collapse
Affiliation(s)
- Roger Grífols
- Charles River Laboratories in PRBB, Doctor Aiguader, 88, 08003 Barcelona, Spain; (R.G.); (C.Z.)
| | - Carolina Zamora
- Charles River Laboratories in PRBB, Doctor Aiguader, 88, 08003 Barcelona, Spain; (R.G.); (C.Z.)
| | - Iván Ortega-Saez
- Parc de Recerca Biomèdica de Barcelona (PRBB) Animal Facility, Doctor Aiguader, 88, 08003 Barcelona, Spain;
| | - Garikoitz Azkona
- Department of Basic Psychological Processes and Their Development, School of Psychology, Euskal Herriko Unibertsitatea (UPV/EHU), Tolosa Hiribidea, 70, 20018 Donostia, Spain
- Correspondence: ; Tel.: +34-943-015-437
| |
Collapse
|
22
|
Borazjani A, Couri BM, Kuang M, Balog BM, Damaser MS. Role of lysyl oxidase like 1 in regulation of postpartum connective tissue metabolism in the mouse vagina†. Biol Reprod 2020; 101:916-927. [PMID: 31403161 DOI: 10.1093/biolre/ioz148] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 05/29/2019] [Accepted: 08/08/2019] [Indexed: 12/24/2022] Open
Abstract
Pelvic organ prolapse (POP) in lysyl oxidase like-1 knockout (Loxl1 KO) mice occurs primarily in parous mice and is rare in nulliparous mice. We determined the effect of Loxl1 deficiency on postpartum regulation of connective tissue metabolism genes and degradative enzyme activity in the vagina at 20 days gestation or 4 h, 48 h, 7 days, 15 days, 25 days, 7 weeks, or 12 weeks postpartum. Nulliparous Loxl1 KO and wildtype (WT) mice aged 11, 18, or 23 weeks were controls. Gene expression and enzyme activity were assessed using real-time quantitative reverse transcription PCR and fluorescein conjugated gelatin zymography, respectively. Parity, but not aging, had a significant influence on gene expression both with time postpartum and between KO and WT mice. Mmp2, Timp1, Timp2, Timp3, Timp4, Col1a1, Col3a1, Acta2, and Bmp1 were differentially expressed between KO and WT mice. Correlational analysis of gene-gene pairs revealed 10 significant differences between parous KO and WT groups, 5 of which were due to lack of co-expression of Bmp1 in KO mice. The overall enzyme activity that could be attributed to MMPs was significantly higher in WT compared to KO mice both 25 days and 12 weeks postpartum, and MMP activity was significantly lower 15 days and 25 days postpartum compared to KO nulliparous controls, but not WT. These findings suggest that Loxl1 deficiency combined with parity has a significant impact on postpartum regulation of connective tissue metabolism, particularly as it relates to co-expression of Bmp1 and altered proteolytic activity.
Collapse
Affiliation(s)
- Ali Borazjani
- Department of Biomedical Engineering, Cleveland Clinic, Cleveland, OH, USA
| | - Bruna M Couri
- Department of Biomedical Engineering, Cleveland Clinic, Cleveland, OH, USA.,Department of Obstetrics & Gynecology, Cleveland Clinic, Cleveland, OH, USA
| | - Mei Kuang
- Department of Biomedical Engineering, Cleveland Clinic, Cleveland, OH, USA
| | - Brian M Balog
- Department of Biomedical Engineering, Cleveland Clinic, Cleveland, OH, USA
| | - Margot S Damaser
- Department of Biomedical Engineering, Cleveland Clinic, Cleveland, OH, USA.,Department of Chemical & Biomedical Engineering, Cleveland State University, Cleveland, OH, USA.,Department of Obstetrics & Gynecology, Cleveland Clinic, Cleveland, OH, USA.,Glickman Urological & Kidney Institute, Cleveland Clinic, Cleveland, OH, USA.,Louis Stokes Veterans Affairs Medical Center, Cleveland, OH, USA
| |
Collapse
|
23
|
Brynildsen JK, Sanchez V, Yohn NL, Carpenter MD, Blendy JA. Sex-specific transgenerational effects of morphine exposure on reward and affective behaviors. Behav Brain Res 2020; 395:112842. [PMID: 32745660 PMCID: PMC8941987 DOI: 10.1016/j.bbr.2020.112842] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 07/16/2020] [Accepted: 07/27/2020] [Indexed: 11/15/2022]
Abstract
Current estimates indicate that millions of people in the United States abuse opioid drugs, which may also affect their offspring. To determine whether parental exposure to morphine alters reward and affective behaviors in subsequent generations we exposed male and female C57BL/6NTac mice to morphine (75 mg) or placebo pellets for 4 weeks. Naïve mice were used as mating partners to create subsequent generations (F1 and F2). Adult male and female F1 and F2 mice were tested in the morphine conditioned place preference paradigm (CPP), marble burying (MB), acoustic startle response (ASR), and open field tests (OFT). Paternal morphine exposure resulted in significantly attenuated preference scores amongst F1 male offspring, but significantly higher preference scores amongst F1 female offspring at the lowest CPP dose tested (5 mg/kg). In contrast, maternal exposure to morphine did not affect morphine reward in the F1 generation; however, the F2 male offspring of morphine-exposed F0 females displayed significantly higher CPP preference scores. Preference scores in F2 females were not affected by F0 male or female morphine exposure. Sex-specific alterations in affective behaviors were observed only in the offspring of F0 males exposed to morphine with F1 males spending less time in the center of the open field and F1 females spending more time in the center of the open field. One generation later, affective behaviors were no longer altered in F2 males but F2 females from the F0 male morphine exposure buried more marbles in the MB test. In summary, early exposure to morphine in males and females causes lineage-specific inheritance of reward and affective behaviors.
Collapse
Affiliation(s)
- Julia K Brynildsen
- Department of Systems Pharmacology and Translational Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Victoria Sanchez
- Department of Systems Pharmacology and Translational Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Nicole L Yohn
- Department of Systems Pharmacology and Translational Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Marco D Carpenter
- Department of Systems Pharmacology and Translational Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Julie A Blendy
- Department of Systems Pharmacology and Translational Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
| |
Collapse
|
24
|
Effects of weaning age and housing conditions on phenotypic differences in mice. Sci Rep 2020; 10:11684. [PMID: 32669633 PMCID: PMC7363894 DOI: 10.1038/s41598-020-68549-3] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Accepted: 06/26/2020] [Indexed: 01/22/2023] Open
Abstract
Poor reproducibility is considered a serious problem in laboratory animal research, with important scientific, economic, and ethical implications. One possible source of conflicting findings in laboratory animal research are environmental differences between animal facilities combined with rigorous environmental standardization within studies. Due to phenotypic plasticity, study-specific differences in environmental conditions during development can induce differences in the animals’ responsiveness to experimental treatments, thereby contributing to poor reproducibility of experimental results. Here, we studied how variation in weaning age (14–30 days) and housing conditions (single versus group housing) affects the phenotype of SWISS mice as measured by a range of behavioral and physiological outcome variables. Weaning age, housing conditions, and their interaction had little effect on the development of stereotypies, as well as on body weight, glucocorticoid metabolite concentrations, and behavior in the elevated plus-maze and open field test. These results are surprising and partly in conflict with previously published findings, especially with respect to the effects of early weaning. Our results thus question the external validity of previous findings and call for further research to identify the sources of variation between replicate studies and study designs that produce robust and reproducible experimental results.
Collapse
|
25
|
Abstract
Abstract
Lactation is a critical period during which maternal nutritional and environmental challenges affect milk composition and, therefore, organ differentiation, structure, and function in offspring during the early postnatal period. Evidence to date shows that lactation is a vulnerable time during which transient insults can have lasting effects, resulting in altered health outcomes in offspring in adult life. Despite the importance of the developmental programming that occurs during this plastic period of neonatal life, there are few comprehensive reviews of the multiple challenges—especially to the dam—during lactation. This review presents milk data from rodent studies involving maternal nutritional challenges and offspring outcome data from studies involving maternal manipulations during lactation. Among the topics addressed are maternal nutritional challenges and the effects of litter size and artificial rearing on offspring metabolism and neural and endocrine outcomes. The lactation period is an opportunity to correct certain functional deficits resulting from prenatal challenges to the fetus, but, if not personalized, can also lead to undesirable outcomes related to catch up-growth and overnutrition.
Collapse
|
26
|
Does early weaning shape future endocrine and metabolic disorders? Lessons from animal models. J Dev Orig Health Dis 2020; 11:441-451. [PMID: 32487270 DOI: 10.1017/s2040174420000410] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Obesity and its complications occur at alarming rates worldwide. Epidemiological data have associated perinatal conditions, such as malnutrition, with the development of some disorders, such as obesity, dyslipidemia, diabetes, and cardiovascular diseases, in childhood and adulthood. Exclusive breastfeeding has been associated with protection against long-term chronic diseases. However, in humans, the interruption of breastfeeding before the recommended period of 6 months is a common practice and can increase the risk of several metabolic disturbances. Nutritional and environmental changes within a critical window of development, such as pregnancy and breastfeeding, can induce permanent changes in metabolism through epigenetic mechanisms, leading to diseases later in life via a phenomenon known as programming or developmental plasticity. However, little is known regarding the underlying mechanisms by which precocious weaning can result in adipose tissue dysfunction and endocrine profile alterations. Here, the authors give a comprehensive report of the different animal models of early weaning and programming that can result in the development of metabolic syndrome. In rats, for example, pharmacological and nonpharmacological early weaning models are associated with the development of overweight and visceral fat accumulation, leptin and insulin resistance, and neuroendocrine and hepatic changes in adult progeny. Sex-related differences seem to influence this phenotype. Therefore, precocious weaning seems to be obesogenic for offspring. A better understanding of this condition seems essential to reducing the risk for diseases. Additionally, this knowledge can generate new insights into therapeutic strategies for obesity management, improving health outcomes.
Collapse
|
27
|
Grieb ZA, Vitale EM, Morrell JI, Lonstein JS, Pereira M. Decreased mesolimbic dopaminergic signaling underlies the waning of maternal caregiving across the postpartum period in rats. Psychopharmacology (Berl) 2020; 237:1107-1119. [PMID: 31927604 DOI: 10.1007/s00213-019-05441-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Accepted: 12/27/2019] [Indexed: 12/26/2022]
Abstract
RATIONALE Mesolimbic dopamine (DA) signaling is essential for the high maternal caregiving characteristic of the early postpartum period, but little is known about dopamine's role in the expression of maternal caregiving thereafter. OBJECTIVES We tested the hypothesis that decreased mesolimbic dopaminergic signaling is particularly responsible for the natural decline in maternal caregiving that occurs as the postpartum period progresses. METHODS Sprague-Dawley (SD) mother rats received intraperitoneal injections of either vehicle, the DA D1 receptor agonist SKF38393, the DA D2 receptor agonist quinpirole, or both agonists twice daily from postpartum days 9 to 15. In a separate experiment involving Long-Evans (LE) rats, we examined whether DA D1 and D2 receptor mRNAs in the nucleus accumbens (NA) shell and ventral tegmental area (VTA), along with DA turnover in the VTA, decline across the postpartum period in parallel with the decreasing maternal behavior. RESULTS All drug treatments significantly maintained higher frequencies of active maternal behaviors (nesting, pup licking, retrieval) compared to vehicle. Furthermore, the majority of mothers treated with SKF38393 either alone or combined with quinpirole maintained full expression of maternal behavior during behavioral testing. D2 receptor mRNA levels were found to be lower in the late postpartum NA shell and VTA compared to early postpartum, but D1 receptor mRNA levels in the NA shell were higher in the late postpartum period. Furthermore, both late postpartum and recently parturient LE mothers had higher VTA DA turnover compared to nulliparae, suggesting changes in mesolimbic signal-to-noise ratio both at the end and beginning of motherhood. CONCLUSIONS Collectively, our results suggest that alterations in mesolimbic DA is part of the neural substrate responsible for dynamic maternal caregiving across the entire postpartum period.
Collapse
Affiliation(s)
- Zachary A Grieb
- Neuroscience Program, Michigan State University, 108 Giltner Hall, East Lansing, MI, 48824, USA. .,Neuroscience Institute, Georgia State University, 880 Petit Science Center, Atlanta, GA, 30303, USA.
| | - Erika M Vitale
- Department of Psychology, Behavioral Neuroscience Program, Michigan State University, 316 Physics Rd, East Lansing, MI, 48824, USA
| | - Joan I Morrell
- Center for Molecular and Behavioral Neuroscience, Rutgers University, 197 University Avenue, Newark, NJ, 07102, USA
| | - Joseph S Lonstein
- Neuroscience Program, Michigan State University, 108 Giltner Hall, East Lansing, MI, 48824, USA.,Department of Psychology, Behavioral Neuroscience Program, Michigan State University, 316 Physics Rd, East Lansing, MI, 48824, USA
| | - Mariana Pereira
- Center for Molecular and Behavioral Neuroscience, Rutgers University, 197 University Avenue, Newark, NJ, 07102, USA.,Department of Psychological and Brain Sciences, University of Massachusetts, 535 Tobin Hall, Amherst, MA, 01003, USA
| |
Collapse
|
28
|
Tottenham N. Early Adversity and the Neotenous Human Brain. Biol Psychiatry 2020; 87:350-358. [PMID: 31399257 PMCID: PMC6935437 DOI: 10.1016/j.biopsych.2019.06.018] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Revised: 06/20/2019] [Accepted: 06/21/2019] [Indexed: 12/20/2022]
Abstract
Human brain development is optimized to learn from environmental cues. The protracted development of the cortex and its connections with subcortical targets has been argued to permit more opportunity for acquiring complex behaviors. This review uses the example of amygdala-medial prefrontal cortex circuitry development to illustrate a principle of human development-namely, that the extension of the brain's developmental timeline allows for the (species-expected) collaboration between child and parent in co-construction of the human brain. The neurobiology underlying affective learning capitalizes on this protracted timeline to develop a rich affective repertoire in adulthood. Humans are afforded this luxuriously slow development in part by the extended period of caregiving provided by parents, and parents aid in scaffolding the process of maturation during childhood. Just as adequate caregiving is a potent effector of brain development, so is adverse caregiving, which is the largest environmental risk factor for adult mental illness. There are large individual differences in neurobiological outcomes following caregiving adversity, indicating that these pathways are probabilistic, rather than deterministic, and prolonged plasticity in human brain development may also allow for subsequent amelioration by positive experiences. The extant research indicates that the development of mental health cannot be considered without consideration of children in the context of their families.
Collapse
Affiliation(s)
- Nim Tottenham
- Department of Psychology, Columbia University, New York, New York.
| |
Collapse
|
29
|
Abstract
Animal welfare is a growing societal concern and the well-being of animals used
for experimental purposes is under particular scrutiny. The vast majority of
laboratory animals are mice living in small cages that do not offer very much
variety. Moreover, the experimental procedure often takes very little time
compared to the time these animals have been bred to the desired age or are
being held available for animal experimentation. However, for the assessment of
animal welfare, the time spent waiting for an experiment or the time spent after
finishing an experiment has also to be taken into account. In addition to
experimental animals, many additional animals (e.g. for breeding and maintenance
of genetic lines, surplus animals) are related to animal experimentation and
usually face similar living conditions. Therefore, in terms of improving the
overall welfare of laboratory animals, there is not only a need for refinement
of experimental conditions but especially for improving living conditions
outside the experiment. The improvement of animal welfare thus depends to a
large extent on the housing and maintenance conditions of all animals related to
experimentation. Given the current state of animal welfare research there is
indeed a great potential for improving the overall welfare of laboratory
animals.
Collapse
Affiliation(s)
- Lars Lewejohann
- German Federal Institute for Risk Assessment (BfR), German Centre for the Protection of Laboratory Animals (Bf3R), Berlin, Germany.,Institute of Animal Welfare, Animal Behavior and Laboratory Animal Science, Freie Universität Berlin, Germany
| | - Kerstin Schwabe
- Department of Neurosurgery, Hannover Medical School, Germany
| | - Christine Häger
- Institute for Laboratory Animal Science, Hannover Medical School, Germany
| | - Paulin Jirkof
- Department Animal Welfare and 3Rs, University of Zurich, Switzerland
| |
Collapse
|
30
|
Tabbaa M, Hammock EAD. Orally administered oxytocin alters brain activation and behaviors of pre-weaning mice. Horm Behav 2020; 118:104613. [PMID: 31654673 PMCID: PMC7015803 DOI: 10.1016/j.yhbeh.2019.104613] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Revised: 09/23/2019] [Accepted: 10/07/2019] [Indexed: 02/02/2023]
Abstract
Oxytocin (OXT) regulates adult social behavior and has been implicated in its development. Because mammalian milk contains OXT and we have recently identified OXT receptors (OXTR) in the face and oronasal cavity of pre-weaning mice, we hypothesize that orally applied OXT may impact brain activity and acute behavior in developing mice. Oral OXT may have effects in the absence of sensory stimulation or perhaps by modulating sensory input, such as whisker stimulation. The present study investigates the acute c-Fos response in the paraventricular nucleus of the hypothalamus (PVN) and along whisker sensory processing brain regions (trigeminothalamocortical circuit) to orally applied OXT, compared to saline, with and without whisker stimulation in postnatal day (P) 14 and P21 male and female mice. Acute behavioral responses were also quantified after oral OXT with whisker stimulation in a non-social context. Oral OXT with and without whisker stimulation increased c-Fos activity in the PVN of males and decreased c-Fos in the ventroposterior medial thalamus in both males and females compared to saline. Additionally, oral OXT with whisker stimulation decreased c-Fos activity across whisker sensory processing brain regions in males and females and decreased c-Fos activity in the trigeminal motor nucleus of females. Lastly, oral OXT with whisker stimulation increased males' locomotor behavior and decreased females' oromotor behavior compared to saline-treated controls. These data indicate that orally applied OXT has acute brain and behavioral effects on developing mice. OXT-modulated sensory signals may bias brain and behavior development toward the social world.
Collapse
Affiliation(s)
- Manal Tabbaa
- Department of Psychology and Program in Neuroscience, The Florida State University, Tallahassee, FL, 32306, USA
| | - Elizabeth A D Hammock
- Department of Psychology and Program in Neuroscience, The Florida State University, Tallahassee, FL, 32306, USA.
| |
Collapse
|
31
|
Parathan P, Wang Y, Leembruggen AJL, Bornstein JC, Foong JPP. The enteric nervous system undergoes significant chemical and synaptic maturation during adolescence in mice. Dev Biol 2020; 458:75-87. [DOI: 10.1016/j.ydbio.2019.10.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Revised: 10/14/2019] [Accepted: 10/15/2019] [Indexed: 12/17/2022]
|
32
|
Post-weaning infant-to-mother bonding in nutritionally independent female mice. PLoS One 2020; 15:e0227034. [PMID: 31940385 PMCID: PMC6961874 DOI: 10.1371/journal.pone.0227034] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Accepted: 12/11/2019] [Indexed: 01/22/2023] Open
Abstract
Infant-parent attachment is highly selective and continues beyond essential care in primates, most prominently in humans, and the quality of this attachment crucially determines cognitive and emotional development of the infant. Altricial rodent species such as mice (Mus musculus) display mutual recognition and communal nursing in wild and laboratory environments, but parental bonding beyond the nursing period has not been reported. We presently demonstrated that socially and nutritionally independent mice still prefer to interact selectively with their mother dam. Furthermore, we observed gender differences in the mother-infant relationship, and showed disruption of this relationship in haploinsufficient Nbea+/- mice, a putative autism model with neuroendocrine dysregulation. To our knowledge, this is the first observation of murine infant-to-mother bonding beyond the nursing period.
Collapse
|
33
|
Wang X, Tsai T, Deng F, Wei X, Chai J, Knapp J, Apple J, Maxwell CV, Lee JA, Li Y, Zhao J. Longitudinal investigation of the swine gut microbiome from birth to market reveals stage and growth performance associated bacteria. MICROBIOME 2019; 7:109. [PMID: 31362781 PMCID: PMC6664762 DOI: 10.1186/s40168-019-0721-7] [Citation(s) in RCA: 230] [Impact Index Per Article: 46.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Accepted: 07/05/2019] [Indexed: 05/24/2023]
Abstract
BACKGROUND Despite recent advances in the understanding of the swine gut microbiome at different growth stages, a comprehensive longitudinal study of the lifetime (birth to market) dynamics of the swine gut microbiome is lacking. RESULTS To fill in this gap of knowledge, we repeatedly collected a total of 273 rectal swabs from 18 pigs during lactation (day (d) 0, 11, 20), nursery (d 27, 33, 41, 50, 61), growing (d 76, 90, 104, 116), and finishing (d 130, 146, 159, 174) stages. DNA was extracted and subjected to sequencing with an Illumina Miseq sequencer targeting the V4 region of the 16S rRNA gene. Sequences were analyzed with the Deblur algorithm in the QIIME2 package. A total of 19 phyla were detected in the lifetime pig gut microbiome with Firmicutes and Bacteroidetes being the most abundant. Alpha diversity including community richness (e.g., number of observed features) and diversity (e.g., Shannon index) showed an overall increasing trend. Distinct shifts in microbiome structure along different growth stages were observed. LEfSe analysis revealed 91 bacterial features that are stage-specific. To validate these discoveries, we performed fecal microbiota transplantation (FMT) by inoculating weanling pigs with mature fecal microbiota from a growing stage pig. Similar stage-specific patterns in microbiome diversity and structures were also observed in both the FMT pigs and their littermates. Although FMT remarkably increased growth performance, it did not change the overall swine gut microbiome. Only a few taxa including those associated with Streptococcus and Clostridiaceae were enriched in the FMT pigs. These data, together with several other lines of evidence, indicate potential roles these taxa play in promoting animal growth performance. Diet, especially crude fiber from corn, was a major factor shaping the swine gut microbiome. The priority effect, i.e., the order and timing of species arrival, was more evident in the solid feed stages. CONCLUSIONS The distinct stage-associated swine gut microbiome may be determined by the differences in diet and/or gut physiology at different growth stages. Our study provides insight into mechanisms governing gut microbiome succession and also underscores the importance of optimizing stage-specific probiotics aimed at improving animal health and production.
Collapse
Affiliation(s)
- Xiaofan Wang
- Department of Animal Science, University of Arkansas, Fayetteville, AR USA
| | - Tsungcheng Tsai
- Department of Animal Science, University of Arkansas, Fayetteville, AR USA
| | - Feilong Deng
- Department of Animal Science, University of Arkansas, Fayetteville, AR USA
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan China
| | - Xiaoyuan Wei
- Department of Animal Science, University of Arkansas, Fayetteville, AR USA
| | - Jianmin Chai
- Department of Animal Science, University of Arkansas, Fayetteville, AR USA
| | - Joshua Knapp
- Department of Animal Science, University of Arkansas, Fayetteville, AR USA
| | - Jason Apple
- Department of Animal Science, University of Arkansas, Fayetteville, AR USA
| | - Charles V. Maxwell
- Department of Animal Science, University of Arkansas, Fayetteville, AR USA
| | - Jung Ae Lee
- Agricultural Statistics Laboratory, University of Arkansas, Fayetteville, AR USA
| | - Ying Li
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan China
| | - Jiangchao Zhao
- Department of Animal Science, University of Arkansas, Fayetteville, AR USA
| |
Collapse
|
34
|
Lee NS, Goodwin NL, Freitas KE, Beery AK. Affiliation, Aggression, and Selectivity of Peer Relationships in Meadow and Prairie Voles. Front Behav Neurosci 2019; 13:52. [PMID: 30941022 PMCID: PMC6433777 DOI: 10.3389/fnbeh.2019.00052] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Accepted: 03/04/2019] [Indexed: 11/16/2022] Open
Abstract
Relationships between adult peers are central to the structure of social groups. In some species, selective preferences for specific peers provide a foundation for consistent group composition. These preferences may be shaped by affiliation toward familiar individuals, and/or by aversion to unfamiliar individuals. We compared peer interactions in two vole species that form selective preferences for familiar same-sex individuals but differ in mating system. Prairie voles (Microtus ochrogaster) form pair bonds with mates and may reside in family groups. Meadow voles (Microtus pennsylvanicus) are promiscuous breeders that form communal winter groups in the wild, and exhibit greater social behavior in short day (SD) lengths in the laboratory. We characterized affiliative, anxiety-like, and aggressive interactions with familiar and novel same-sex conspecifics in meadow and prairie voles housed in summer- or winter-like photoperiods. Species differences in affective behaviors were pronounced, with prairie voles exhibiting more aggressive behavior and less anxiety-like behavior relative to meadow voles. Meadow voles housed in short (vs. long) day lengths were more affiliative and more interactive with strangers; prosocial behavior was also facilitated by a history of social housing. Prairie voles exhibited partner preferences regardless of sex or day length, indicating that selective peer preferences are the norm in prairie voles. Prairie vole females formed preferences for new same-sex social partners following re-pairing; males were often aggressive upon re-pairing. These data suggest that preferences for familiar peers in prairie voles are maintained in part by aggression toward unfamiliar individuals, as in mate partnerships. In contrast, social tolerance is an important feature of meadow vole peer affiliation, demonstrated by low aggression toward unfamiliar conspecifics, and consistent with field data on winter tolerance.
Collapse
Affiliation(s)
- Nicole S Lee
- Neuroscience and Behavior Program, University of Massachusetts, Amherst, MA, United States
| | | | | | - Annaliese K Beery
- Neuroscience and Behavior Program, University of Massachusetts, Amherst, MA, United States.,Department of Psychology, Smith College, Northampton, MA, United States.,Neuroscience Program, Smith College, Northampton, MA, United States
| |
Collapse
|
35
|
Zhang W, Zhang Y, Zheng Y, Zheng M, Sun N, Yang X, Gao Y. Progress in Research on Brain Development and Function of Mice During Weaning. Curr Protein Pept Sci 2019; 20:705-712. [PMID: 30678620 DOI: 10.2174/1389203720666190125095819] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 12/30/2018] [Accepted: 01/13/2019] [Indexed: 01/15/2023]
Abstract
Lactation is a critical phase for brain function development. New dietary experiences of mouse caused by weaning can regulate brain development and function, increase their response to food and environment, and eventually give rise to corresponding behavioral changes. Changes in weaning time induce the alteration of brain tissues morphology and molecular characteristics, glial cell activity and behaviors in the offspring. In addition, it is also sensitive to the intervention of environment and drugs during this period. That is to say, the study focused on brain development and function based on mouse weaning is critical to demonstrate the underlying pathogenesis of neuropsychiatric diseases and find new drug targets. This article mainly focuses on the developmental differentiation of the brain during lactation, especially during weaning in mice.
Collapse
Affiliation(s)
- Wenjie Zhang
- The First Clinical College, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Yueling Zhang
- Department of Operating Theatre, Binzhou People's Hospital, Binzhou, China
| | - Yuanjia Zheng
- South China Research Center for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Mingxuan Zheng
- Department of Pathogen Biology and Immunology, Xuzhou Medical University and Jiangsu Key Laboratory of Immunity and Metabolism, Xuzhou, Jiangsu, China
| | - Nannan Sun
- State Key Laboratory of Ophthalmology, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - Xiaoying Yang
- Department of Pathogen Biology and Immunology, Xuzhou Medical University and Jiangsu Key Laboratory of Immunity and Metabolism, Xuzhou, Jiangsu, China
| | - Yong Gao
- College of PIWEI institute, Guangzhou University of Chinese Medicine, Guangzhou, China
| |
Collapse
|
36
|
Beery AK. Frank Beach award winner: Neuroendocrinology of group living. Horm Behav 2019; 107:67-75. [PMID: 30439353 PMCID: PMC6371784 DOI: 10.1016/j.yhbeh.2018.11.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Revised: 10/31/2018] [Accepted: 11/09/2018] [Indexed: 01/02/2023]
Abstract
Why do members of some species live in groups while others are solitary? Group living (sociality) has often been studied from an evolutionary perspective, but less is known about the neurobiology of affiliation outside the realms of mating and parenting. Colonial species offer a valuable opportunity to study nonsexual affiliative behavior between adult peers. Meadow voles (Microtus pennsylvanicus) display environmentally induced variation in social behavior, maintaining exclusive territories in summer months, but living in social groups in winter. Research on peer relationships in female meadow voles demonstrates that these selective preferences are mediated differently than mate relationships in socially monogamous prairie voles, but are also impacted by oxytocin and HPA axis signaling. This review addresses day-length dependent variation in physiology and behavior, and presents the current understanding of the mechanisms supporting selective social relationships in meadow voles, with connections to lessons from other species.
Collapse
Affiliation(s)
- Annaliese K Beery
- Department of Psychology, Department of Biology, Program in Neuroscience, Smith College, Northampton, MA 01063, United States of America.
| |
Collapse
|
37
|
Kelly AM, Saunders AG, Ophir AG. Mechanistic substrates of a life history transition in male prairie voles: Developmental plasticity in affiliation and aggression corresponds to nonapeptide neuronal function. Horm Behav 2018; 99:14-24. [PMID: 29407458 PMCID: PMC5880752 DOI: 10.1016/j.yhbeh.2018.01.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Revised: 01/12/2018] [Accepted: 01/23/2018] [Indexed: 11/17/2022]
Abstract
Although prairie vole (Microtus ochrogaster) social behavior is well-characterized in adults, surprisingly little is known about the development of social behavior in voles. Further, the overwhelming majority of studies in prairie voles examine social behavior in a reproductive context. Here, we examine developmental plasticity in affiliation and aggression and their underlying neural correlates. Using sexually naïve males, we characterized interactions with an age-matched, novel, same-sex conspecific in four different age groups that span pre-weaning to adulthood. We found that prosocial behavior decreased and aggression increased as males matured. Additionally, pre-weaning males were more prosocial than nonsocial, whereas post-weaning males were more nonsocial than prosocial. We also examined nonapeptide neural activity in response to a novel conspecific in brain regions important for promoting sociality and aggression using the immediate early gene cFos. Assessment of developmental changes in neural activity showed that vasopressin neurons in the medial bed nucleus of the stria terminalis exhibit functional plasticity, providing a potential functional mechanism that contributes to this change in sociality as prairie voles mature. This behavioral shift corresponds to the transition from a period of allopatric cohabitation with siblings to a period of time when voles disperse and presumably attempt to establish and defend territories. Taken together our data provide a putative mechanism by which brain and behavior prepare for the opportunity to pairbond (characterized by selective affiliation with a partner and aggression toward unfamiliar conspecifics) by undergoing changes away from general affiliation and toward selective aggression, accounting for this important life history event.
Collapse
Affiliation(s)
- Aubrey M Kelly
- Department of Psychology, Cornell University, Ithaca, NY 14853, USA.
| | | | | |
Collapse
|
38
|
Bolton JL, Wiley MG, Ryan B, Truong S, Strait M, Baker DC, Yang NY, Ilkayeva O, O'Connell TM, Wroth SW, Sánchez CL, Swamy G, Newgard C, Kuhn C, Bilbo SD, Simmons LA. Perinatal western-type diet and associated gestational weight gain alter postpartum maternal mood. Brain Behav 2017; 7:e00828. [PMID: 29075574 PMCID: PMC5651398 DOI: 10.1002/brb3.828] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 07/07/2017] [Accepted: 08/06/2017] [Indexed: 12/11/2022] Open
Abstract
INTRODUCTION The role of perinatal diet in postpartum maternal mood disorders, including depression and anxiety, remains unclear. We investigated whether perinatal consumption of a Western-type diet (high in fat and branched-chain amino acids [BCAA]) and associated gestational weight gain (GWG) cause serotonin dysregulation in the central nervous system (CNS), resulting in postpartum depression and anxiety (PPD/A). METHODS Mouse dams were fed one of four diets (high-fat/high BCAA, low-fat/high BCAA, high-fat, and low-fat) prior to mating and throughout gestation and lactation. Postpartum behavioral assessments were conducted, and plasma and brain tissues assayed. To evaluate potential clinical utility, we conducted preliminary human studies using data from an extant sample of 17 primiparous women with high GWG, comparing across self-reported postpartum mood symptoms using the Edinburgh Postnatal Depression Scale (EPDS) for percent GWG and plasma amino acid levels. RESULTS Mouse dams fed the high-fat/high BCAA diet gained more weight per kcal consumed, and BCAA-supplemented dams lost weight more slowly postpartum. Dams on BCAA-supplemented diets exhibited increased PPD/A-like behavior, decreased dopaminergic function, and decreased plasma tyrosine and histidine levels when assessed on postnatal day (P)8. Preliminary human data showed that GWG accounted for 29% of the variance in EPDS scores. Histidine was also lower in women with higher EPDS scores. CONCLUSIONS These findings highlight the role of perinatal diet and excess GWG in the development of postpartum mood disorders.
Collapse
Affiliation(s)
- Jessica L Bolton
- Department of Psychology and Neuroscience Duke University Durham NC USA
| | - Melanie G Wiley
- Department of Psychology and Neuroscience Duke University Durham NC USA
| | - Bailey Ryan
- Department of Psychology and Neuroscience Duke University Durham NC USA
| | - Samantha Truong
- Department of Psychology and Neuroscience Duke University Durham NC USA
| | | | | | | | - Olga Ilkayeva
- Duke Molecular Physiology Institute Duke University School of Medicine Durham NC USA
| | - Thomas M O'Connell
- Duke Molecular Physiology Institute Duke University School of Medicine Durham NC USA
| | | | - Cristina L Sánchez
- Department of Pharmacology and Cancer Biology Duke University School of Medicine Durham NC USA
| | - Geeta Swamy
- Department of Obstetrics and Gynecology Duke University School of Medicine Durham NC USA
| | - Christopher Newgard
- Duke Molecular Physiology Institute Duke University School of Medicine Durham NC USA.,Department of Pharmacology and Cancer Biology Duke University School of Medicine Durham NC USA
| | - Cynthia Kuhn
- Department of Pharmacology and Cancer Biology Duke University School of Medicine Durham NC USA
| | - Staci D Bilbo
- Department of Psychology and Neuroscience Duke University Durham NC USA
| | | |
Collapse
|
39
|
The effect of early life experience, environment, and genetic factors on spontaneous home-cage aggression-related wounding in male C57BL/6 mice. Lab Anim (NY) 2017; 46:176-184. [PMID: 28328870 DOI: 10.1038/laban.1225] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2016] [Accepted: 12/12/2016] [Indexed: 01/08/2023]
Abstract
Aggression is a major welfare issue in mice, particularly when mice unfamiliar to each other are first placed in cages, as happens on receipt from a vendor, and following cage cleaning. Injuries from aggression are the second leading cause of unplanned euthanasia in mice, following ulcerative dermatitis. Commonly employed strategies for reducing aggression-related injury are largely anecdotal, and may even be counterproductive. Here we report a series of experiments testing potential explanations and interventions for post-shipping aggression-related injuries in C57BL/6 mice. First, we examined the effects of weaning: testing whether manipulating weaning age reduced aggression-related injuries, and if repeated mixing of weaned mice before shipping increased these injuries. Contrary to our predictions, repeated mixing did not increase post-shipping injurious aggression, and early weaning reduced aggression-related injuries. Second, we examined potential post-shipping interventions: testing whether lavender essential oil applied to the cage reduced aggression-related injuries, and whether a variety of enrichments decreased injurious aggression. Again, contrary to predictions, lavender increased wounding, and none of the enrichments reduced it. However, consistent with the effects of weaning age in the first experiment, cages with higher mean body weight showed elevated levels of aggression-related wounding. Finally, we tested whether C57BL/6 substrains and identification methods affected levels of intra-cage wounding from aggression. We found no effect of strain, but cages where mice were ear-notched for identification showed higher levels of wounding than cages where mice were tail-tattooed. Overall, these results emphasize the multifactorial nature of home-cage injurious aggression, and the importance of testing received wisdom when it comes to managing complex behavioral and welfare problems. In terms of practical recommendations to reduce aggressive wounding in the home cage, tail tattooing is recommended over ear notching and late weaning should be avoided.
Collapse
|
40
|
Richter SH, Kästner N, Loddenkemper DH, Kaiser S, Sachser N. A Time to Wean? Impact of Weaning Age on Anxiety-Like Behaviour and Stability of Behavioural Traits in Full Adulthood. PLoS One 2016; 11:e0167652. [PMID: 27930688 PMCID: PMC5145172 DOI: 10.1371/journal.pone.0167652] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Accepted: 11/17/2016] [Indexed: 12/31/2022] Open
Abstract
In mammals, weaning constitutes an important phase in the progression to adulthood. It comprises the termination of suckling and is characterized by several changes in the behaviour of both mother and offspring. Furthermore, numerous studies in rodents have shown that the time point of weaning shapes the behavioural profile of the young. Most of these studies, however, have focused on ‘early weaning’, while relatively little work has been done to study ‘late weaning’ effects. The aim of the present study was therefore to explore behavioural effects of ‘late weaning’, and furthermore to gain insights into modulating effects of weaning age on the consistency of behavioural expressions over time. In total, 25 male and 20 female C57BL/6J mice, weaned after three (W3) or four (W4) weeks of age, were subjected to a series of behavioural paradigms widely used to assess anxiety-like behaviour, exploratory locomotion, and nest building performance. Behavioural testing took place with the mice reaching an age of 20 weeks and was repeated eight weeks later to investigate the stability of behavioural expressions over time. At the group level, W4 mice behaved less anxious and more explorative than W3 animals in the Open Field and Novel Cage, while anxiety-like behaviour on the Elevated Plus Maze was modulated by a weaning-age-by-sex interaction. Furthermore, weaning age shaped the degree of behavioural stability over time in a sex-specific way. While W3 females and W4 males displayed a remarkable degree of behavioural stability over time, no such patterns were observed in W3 males and W4 females. Adding to the existing literature, we could thus confirm that effects of weaning age do indeed exist when prolonging this phase, and were furthermore able to provide first evidence for the impact of weaning age and sex on the consistency of behavioural expressions over time.
Collapse
Affiliation(s)
- S. Helene Richter
- Department of Behavioural Biology, University of Münster, Münster, Germany
- * E-mail:
| | - Niklas Kästner
- Department of Behavioural Biology, University of Münster, Münster, Germany
| | | | - Sylvia Kaiser
- Department of Behavioural Biology, University of Münster, Münster, Germany
| | - Norbert Sachser
- Department of Behavioural Biology, University of Münster, Münster, Germany
| |
Collapse
|
41
|
Lou D, Wang Q, Huang M, Zhou Z. Does age matter? Comparison of neurobehavioral effects of paraquat exposure on postnatal and adult C57BL/6 mice. Toxicol Mech Methods 2016; 26:667-673. [DOI: 10.1080/15376516.2016.1223241] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Dan Lou
- School of Public Health/MOE Key Lab of Public Health Safety/WHO Collaborating Center for Occupational Health, Fudan University, Shanghai, China
- Shanghai Municipal Center for Disease Control and Prevention, Shanghai, China
| | - Qiaochu Wang
- School of Public Health/MOE Key Lab of Public Health Safety/WHO Collaborating Center for Occupational Health, Fudan University, Shanghai, China
| | - Min Huang
- Department of Environmental Health Science, School of Public Health, Ningxia Medical University, Yinchuan, China
| | - Zhijun Zhou
- School of Public Health/MOE Key Lab of Public Health Safety/WHO Collaborating Center for Occupational Health, Fudan University, Shanghai, China
| |
Collapse
|
42
|
Maternal Weaning Modulates Emotional Behavior and Regulates the Gut-Brain Axis. Sci Rep 2016; 6:21958. [PMID: 26903212 PMCID: PMC4763306 DOI: 10.1038/srep21958] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2015] [Accepted: 02/02/2016] [Indexed: 12/19/2022] Open
Abstract
Evidence shows that nutritional and environmental stress stimuli during postnatal period influence brain development and interactions between gut and brain. In this study we show that in rats, prevention of weaning from maternal milk results in depressive-like behavior, which is accompanied by changes in the gut bacteria and host metabolism. Depressive-like behavior was studied using the forced-swim test on postnatal day (PND) 25 in rats either weaned on PND 21, or left with their mother until PND 25 (non-weaned). Non-weaned rats showed an increased immobility time consistent with a depressive phenotype. Fluorescence in situ hybridization showed non-weaned rats to harbor significantly lowered Clostridium histolyticum bacterial groups but exhibit marked stress-induced increases. Metabonomic analysis of urine from these animals revealed significant differences in the metabolic profiles, with biochemical phenotypes indicative of depression in the non-weaned animals. In addition, non-weaned rats showed resistance to stress-induced modulation of oxytocin receptors in amygdala nuclei, which is indicative of passive stress-coping mechanism. We conclude that delaying weaning results in alterations to the gut microbiota and global metabolic profiles which may contribute to a depressive phenotype and raise the issue that mood disorders at early developmental ages may reflect interplay between mammalian host and resident bacteria.
Collapse
|
43
|
Curley JP, Champagne FA. Influence of maternal care on the developing brain: Mechanisms, temporal dynamics and sensitive periods. Front Neuroendocrinol 2016; 40:52-66. [PMID: 26616341 PMCID: PMC4783284 DOI: 10.1016/j.yfrne.2015.11.001] [Citation(s) in RCA: 159] [Impact Index Per Article: 19.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2015] [Revised: 11/17/2015] [Accepted: 11/22/2015] [Indexed: 02/08/2023]
Abstract
Variation in maternal care can lead to divergent developmental trajectories in offspring with implications for neuroendocrine function and behavioral phenotypes. Study of the long-term outcomes associated with mother-infant interactions suggests complex mechanisms linking the experience of variation in maternal care and these neurobiological consequences. Through integration of genetic, molecular, cellular, neuroanatomical, and neuroendocrine approaches, significant advances in our understanding of these complex pathways have been achieved. In this review, we will consider the impact of maternal care on male and female offspring development with a particular focus on the issues of timing and mechanism. Identifying the period of sensitivity to maternal care and the temporal dynamics of the molecular and neuroendocrine changes that are a consequence of maternal care represents a critical step in the study of mechanism.
Collapse
Affiliation(s)
- James P Curley
- Department of Psychology, Columbia University, Room 406 Schermerhorn Hall, 1190 Amsterdam Avenue, New York, NY 10027, USA; Center for Integrative Animal Behavior, Columbia University, 1200 Amsterdam Avenue, New York, NY 10027, USA.
| | - Frances A Champagne
- Department of Psychology, Columbia University, Room 406 Schermerhorn Hall, 1190 Amsterdam Avenue, New York, NY 10027, USA; Center for Integrative Animal Behavior, Columbia University, 1200 Amsterdam Avenue, New York, NY 10027, USA.
| |
Collapse
|
44
|
Perkeybile AM, Delaney-Busch N, Hartman S, Grimm KJ, Bales KL. Intergenerational transmission of alloparental behavior and oxytocin and vasopressin receptor distribution in the prairie vole. Front Behav Neurosci 2015; 9:191. [PMID: 26257619 PMCID: PMC4511842 DOI: 10.3389/fnbeh.2015.00191] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2015] [Accepted: 07/07/2015] [Indexed: 01/25/2023] Open
Abstract
Variation in the early environment has the potential to permanently alter offspring behavior and development. We have previously shown that naturally occurring variation in biparental care of offspring in the prairie vole is related to differences in social behavior of the offspring. It was not, however, clear whether the behavioral differences seen between offspring receiving high compared to low amounts of parental care were the result of different care experiences or were due to shared genetics with their high-contact or low-contact parents. Here we use cross-fostering methods to determine the mode of transmission of alloparental behavior and oxytocin receptor (OTR) and vasopressin V1a receptor (V1aR) binding from parent to offspring. Offspring were cross-fostered or in-fostered on postnatal day 1 and parental care received was quantified in the first week postpartum. At weaning, offspring underwent an alloparental care test and brains were then collected from all parents and offspring to examine OTR and V1aR binding. Results indicate that alloparental behavior of offspring was predicted by the parental behavior of their rearing parents. Receptor binding for both OTR and V1aR tended to be predicted by the genetic mothers for female offspring and by the genetic fathers for male offspring. These findings suggest a different, sex-dependent, role of early experience and genetics in shaping behavior compared to receptor distribution and support the notion of sex-dependent outcomes.
Collapse
Affiliation(s)
- Allison M Perkeybile
- Department of Psychology, University of California, Davis Davis, CA, USA ; The Kinsey Institute for Research in Sex, Gender and Reproduction, Indiana University Bloomington, IN, USA
| | - Nathanial Delaney-Busch
- Department of Psychology, University of California, Davis Davis, CA, USA ; Department of Psychology, Tufts University Medford, MA, USA
| | - Sarah Hartman
- Department of Psychology, University of California, Davis Davis, CA, USA ; Department of Human Development, University of California, Davis Davis, CA, USA
| | - Kevin J Grimm
- Department of Psychology, University of California, Davis Davis, CA, USA ; Department of Psychology, Arizona State University Tempe, AZ, USA
| | - Karen L Bales
- Department of Psychology, University of California, Davis Davis, CA, USA
| |
Collapse
|
45
|
Grinevich V, Desarménien MG, Chini B, Tauber M, Muscatelli F. Ontogenesis of oxytocin pathways in the mammalian brain: late maturation and psychosocial disorders. Front Neuroanat 2015; 8:164. [PMID: 25767437 PMCID: PMC4341354 DOI: 10.3389/fnana.2014.00164] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Accepted: 12/17/2014] [Indexed: 01/02/2023] Open
Abstract
Oxytocin (OT), the main neuropeptide of sociality, is expressed in neurons exclusively localized in the hypothalamus. During the last decade, a plethora of neuroendocrine, metabolic, autonomic and behavioral effects of OT has been reported. In the urgency to find treatments to syndromes as invalidating as autism, many clinical trials have been launched in which OT is administered to patients, including adolescents and children. However, the impact of OT on the developing brain and in particular on the embryonic and early postnatal maturation of OT neurons, has been only poorly investigated. In the present review we summarize available (although limited) literature on general features of ontogenetic transformation of the OT system, including determination, migration and differentiation of OT neurons. Next, we discuss trajectories of OT receptors (OTR) in the perinatal period. Furthermore, we provide evidence that early alterations, from birth, in the central OT system lead to severe neurodevelopmental diseases such as feeding deficit in infancy and severe defects in social behavior in adulthood, as described in Prader-Willi syndrome (PWS). Our review intends to propose a hypothesis about developmental dynamics of central OT pathways, which are essential for survival right after birth and for the acquisition of social skills later on. A better understanding of the embryonic and early postnatal maturation of the OT system may lead to better OT-based treatments in PWS or autism.
Collapse
Affiliation(s)
- Valery Grinevich
- Schaller Research Group on Neuropeptides, German Cancer Research Center and CellNetwork Cluster of Excellence of the University of Heidelberg Heidelberg, Germany
| | - Michel G Desarménien
- Institute of Functional Genomics, Centre National de la Recherche Scientifique, Institut National de la Santé et de la Recherche Médicale, Université Montpellier 1, Université Montpellier 2 Montpellier, France
| | - Bice Chini
- Consiglio Nazionale delle Ricerche Institute of Neuroscience Milan, Italy
| | - Maithé Tauber
- Reference Centre for Prader-Willi Syndrome - Department of Pediatric Endocrinology, Hôpital des Enfants Centre Hospitalier Universitaire de Toulouse 330 Toulouse, France ; Institut National de la Santé et de la Recherche Médicale Unité Mixe de Recherche 1043, Paul Sabatier University Toulouse III Toulouse, France
| | - Françoise Muscatelli
- Institut de Neurobiologie de la Méditerranée Unité Mixe de Recherche U901, Institut National de la Santé et de la Recherche Médicale, Parc Scientifique de Luminy Marseille, France ; Aix-Marseille Université, Institut de Neurobiologie de la Méditerranée Unité Mixe de Recherche 901 Marseille, France
| |
Collapse
|
46
|
Donaldson ZR, Piel DA, Santos TL, Richardson-Jones J, Leonardo ED, Beck SG, Champagne FA, Hen R. Developmental effects of serotonin 1A autoreceptors on anxiety and social behavior. Neuropsychopharmacology 2014; 39:291-302. [PMID: 23907404 PMCID: PMC3870787 DOI: 10.1038/npp.2013.185] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2013] [Revised: 06/27/2013] [Accepted: 07/22/2013] [Indexed: 01/13/2023]
Abstract
The serotonin 1A receptor (5-HT1A) has a major role in modulating the effects of serotonin on mood and behavior. Previous studies have shown that knockout of 5-HT1A selectively in the raphe leads to higher levels of anxiety during adulthood. However, it remains unclear whether this phenotype is due to variation in receptor levels specifically during development or throughout life. To test the hypothesis that developmental sensitivity may underlie the effects of 5-HT1A on anxiety, we used an inducible transgenic system to selectively suppress 5-HT1A levels in serotonergic raphe neurons from post-natal days (P) 14 to P30, with a maximal reduction of 40% at P21 and return to regular levels by P30. This developmental decrease in receptor levels has long-lasting consequences, increasing anxiety and decreasing social investigation in adulthood. In addition, post-natal knockdown of autoreceptors leads to long-term increases in the excitability of serotonergic neurons, which may represent a mechanism underlying the effects of post-natal receptor variation on behavior later in life. Finally, we also examined the interplay between receptor variation and juvenile exposure to stress (applied from P14 to P21). Similar to receptor knockdown, juvenile exposure to stress led to increased anxiety phenotypes but did not exacerbate 5-HT1A knockdown-mediated anxiety levels. This work indicates that the effects of 5-HT1A autoreceptors on anxiety and social behaviors are developmentally mediated and suggests that natural variations in the expression of 5-HT1A may act during development to influence individual anxiety levels and contribute to susceptibility to anxiety disorders.
Collapse
Affiliation(s)
- Zoe R Donaldson
- Departments of Neuroscience and Psychiatry, Columbia University, New York, NY, USA,Division of Integrative Neuroscience, The New York State Psychiatric Institute, New York, NY, USA,Department of Neuroscience and Psychiatry, Columbia University, 1051 Riverside Drive, Kolb 753, New York, NY 10032, USA, Tel: +1 212 543 5173, Fax: +1 212 543 5074, E-mail: or
| | - David A Piel
- Department of Anesthesiology, Children's Hospital of Philadelphia Research Institute and University of Pennsylvania, Philadelphia, PA, USA
| | - Tabia L Santos
- Department of Neuroscience, Barnard College, New York, NY, USA
| | - Jesse Richardson-Jones
- Departments of Neuroscience and Psychiatry, Columbia University, New York, NY, USA,Division of Integrative Neuroscience, The New York State Psychiatric Institute, New York, NY, USA
| | - E David Leonardo
- Departments of Neuroscience and Psychiatry, Columbia University, New York, NY, USA,Division of Integrative Neuroscience, The New York State Psychiatric Institute, New York, NY, USA
| | - Sheryl G Beck
- Department of Anesthesiology, Children's Hospital of Philadelphia Research Institute and University of Pennsylvania, Philadelphia, PA, USA
| | | | - René Hen
- Departments of Neuroscience and Psychiatry, Columbia University, New York, NY, USA,Division of Integrative Neuroscience, The New York State Psychiatric Institute, New York, NY, USA,Department of Neuroscience and Psychiatry, Columbia University, 1051 Riverside Drive, Kolb 753, New York, NY 10032, USA, Tel: +1 212 543 5173, Fax: +1 212 543 5074, E-mail: or
| |
Collapse
|
47
|
Máté Z, Poles MZ, Szabó G, Bagyánszki M, Talapka P, Fekete E, Bódi N. Spatiotemporal expression pattern of DsRedT3/CCK gene construct during postnatal development of myenteric plexus in transgenic mice. Cell Tissue Res 2013; 352:199-206. [PMID: 23370601 DOI: 10.1007/s00441-013-1552-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2012] [Accepted: 12/16/2012] [Indexed: 01/04/2023]
Abstract
Cholecystokinin (CCK) is an early marker of both neuronal and endocrine cell lineages in the developing gastrointestinal tract. To determine the quantitative properties and the spatial distribution of the CCK-expressing myenteric neurones in early postnatal life, a transgenic mouse strain with a CCK promoter-driven red fluorescent protein (DsRedT3/CCK) was established. The cell-specific expression of DsRedT3/CCK was validated by in situ hybridization with a CCK antisense riboprobe and by in situ hybridization coupled with immunohistochemistry involving a monoclonal antibody to CCK. A gradual increase in the DsRedT3/CCK-expressing enteric neurones with clear regional differences was documented from birth until the suckling to weaning transition, in parallel with the period of rapid intestinal growth and functional maturation. To evaluate the proportion of myenteric neurones in which DsRedT3/CCK transgene expression was colocalized with the enteric neuronal marker peripherin, immunofluorescence techniques were applied. All DsRedT3/CCK neurones were peripherin-immunoreactive and the proportion of DsRedT3/CCK-expressing myenteric neurones in the duodenum was the highest after the third week of life, when the number of peripherin-immunoreactive myenteric neurones in this region had decreased. Nearly all of the DsRedT3/CCK-expressing neurones also expressed 5-hydroxytryptophan (5-HT). Thus, by utilizing a new transgenic mouse strain, we have demonstrated a small number of CCK-expressing myenteric neurones with a developmentally regulated spatiotemporal distribution. The coexistence of CCK and 5-HT in the majority of these neurones suggests their possible regulatory role in feeding at the suckling to weaning transition.
Collapse
Affiliation(s)
- Zoltán Máté
- Institute of Experimental Medicine, Hungarian Academy of Sciences, Budapest, Hungary
| | | | | | | | | | | | | |
Collapse
|
48
|
Sikora KM, Nosavanh LM, Kantheti P, Burmeister M, Hortsch M. Expression of Caytaxin protein in Cayman Ataxia mouse models correlates with phenotype severity. PLoS One 2012; 7:e50570. [PMID: 23226316 PMCID: PMC3511541 DOI: 10.1371/journal.pone.0050570] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2012] [Accepted: 10/22/2012] [Indexed: 02/06/2023] Open
Abstract
Caytaxin is a highly-conserved protein, which is encoded by the Atcay/ATCAY gene. Mutations in Atcay/ATCAY have been identified as causative of cerebellar disorders such as the rare hereditary disease Cayman ataxia in humans, generalized dystonia in the dystonic (dt) rat, and marked motor defects in three ataxic mouse lines. While several lines of evidence suggest that Caytaxin plays a critical role in maintaining nervous system processes, the physiological function of Caytaxin has not been fully characterized. In the study presented here, we generated novel specific monoclonal antibodies against full-length Caytaxin to examine endogenous Caytaxin expression in wild type and Atcay mutant mouse lines. Caytaxin protein is absent from brain tissues in the two severely ataxic Atcayjit (jittery) and Atcayswd (sidewinder) mutant lines, and markedly decreased in the mildly ataxic/dystonic Atcayji-hes (hesitant) line, indicating a correlation between Caytaxin expression and disease severity. As the expression of wild type human Caytaxin in mutant sidewinder and jittery mice rescues the ataxic phenotype, Caytaxin’s physiological function appears to be conserved between the human and mouse orthologs. Across multiple species and in several neuronal cell lines Caytaxin is expressed as several protein isoforms, the two largest of which are caused by the usage of conserved methionine translation start sites. The work described in this manuscript presents an initial characterization of the Caytaxin protein and its expression in wild type and several mutant mouse models. Utilizing these animal models of human Cayman Ataxia will now allow an in-depth analysis to elucidate Caytaxin’s role in maintaining normal neuronal function.
Collapse
Affiliation(s)
- Kristine M. Sikora
- Program in Cellular and Molecular Biology, University of Michigan, Ann Arbor, Michigan, United States of America
- Molecular & Behavioral Neuroscience Institute, University of Michigan, Ann Arbor, Michigan, United States of America
- Department of Cell and Developmental Biology, University of Michigan, Ann Arbor, Michigan, United States of America
| | - LaGina M. Nosavanh
- Department of Cell and Developmental Biology, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Prameela Kantheti
- Molecular & Behavioral Neuroscience Institute, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Margit Burmeister
- Program in Cellular and Molecular Biology, University of Michigan, Ann Arbor, Michigan, United States of America
- Molecular & Behavioral Neuroscience Institute, University of Michigan, Ann Arbor, Michigan, United States of America
- Department of Psychiatry and Human Genetics, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Michael Hortsch
- Department of Cell and Developmental Biology, University of Michigan, Ann Arbor, Michigan, United States of America
- * E-mail:
| |
Collapse
|
49
|
Lebron-Milad K, Abbs B, Milad MR, Linnman C, Rougemount-Bücking A, Zeidan MA, Holt DJ, Goldstein JM. Sex differences in the neurobiology of fear conditioning and extinction: a preliminary fMRI study of shared sex differences with stress-arousal circuitry. BIOLOGY OF MOOD & ANXIETY DISORDERS 2012; 2:7. [PMID: 22738021 PMCID: PMC3416700 DOI: 10.1186/2045-5380-2-7] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/12/2012] [Accepted: 04/16/2012] [Indexed: 01/31/2023]
Abstract
BACKGROUND The amygdala, hippocampus, medial prefrontal cortex (mPFC) and brain-stem subregions are implicated in fear conditioning and extinction, and are brain regions known to be sexually dimorphic. We used functional magnetic resonance imaging (fMRI) to investigate sex differences in brain activity in these regions during fear conditioning and extinction. METHODS Subjects were 12 healthy men comparable to 12 healthy women who underwent a 2-day experiment in a 3 T MR scanner. Fear conditioning and extinction learning occurred on day 1 and extinction recall occurred on day 2. The conditioned stimuli were visual cues and the unconditioned stimulus was a mild electric shock. Skin conductance responses (SCR) were recorded throughout the experiment as an index of the conditioned response. fMRI data (blood-oxygen-level-dependent [BOLD] signal changes) were analyzed using SPM8. RESULTS Findings showed no significant sex differences in SCR during any experimental phases. However, during fear conditioning, there were significantly greater BOLD-signal changes in the right amygdala, right rostral anterior cingulate (rACC) and dorsal anterior cingulate cortex (dACC) in women compared with men. In contrast, men showed significantly greater signal changes in bilateral rACC during extinction recall. CONCLUSIONS These results indicate sex differences in brain activation within the fear circuitry of healthy subjects despite similar peripheral autonomic responses. Furthermore, we found that regions where sex differences were previously reported in response to stress, also exhibited sex differences during fear conditioning and extinction.
Collapse
Affiliation(s)
- Kelimer Lebron-Milad
- Department of Psychiatry, Harvard Medical School & Massachusetts General Hospital, 149 13th St, Charlestown, MA, 02129, USA.
| | | | | | | | | | | | | | | |
Collapse
|
50
|
Lebron-Milad K, Abbs B, Milad MR, Linnman C, Rougemount-Bücking A, Zeidan MA, Holt DJ, Goldstein JM. Sex differences in the neurobiology of fear conditioning and extinction: a preliminary fMRI study of shared sex differences with stress-arousal circuitry. BIOLOGY OF MOOD & ANXIETY DISORDERS 2012. [PMID: 22738021 DOI: 10.1186/2045–5380–2–7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND The amygdala, hippocampus, medial prefrontal cortex (mPFC) and brain-stem subregions are implicated in fear conditioning and extinction, and are brain regions known to be sexually dimorphic. We used functional magnetic resonance imaging (fMRI) to investigate sex differences in brain activity in these regions during fear conditioning and extinction. METHODS Subjects were 12 healthy men comparable to 12 healthy women who underwent a 2-day experiment in a 3 T MR scanner. Fear conditioning and extinction learning occurred on day 1 and extinction recall occurred on day 2. The conditioned stimuli were visual cues and the unconditioned stimulus was a mild electric shock. Skin conductance responses (SCR) were recorded throughout the experiment as an index of the conditioned response. fMRI data (blood-oxygen-level-dependent [BOLD] signal changes) were analyzed using SPM8. RESULTS Findings showed no significant sex differences in SCR during any experimental phases. However, during fear conditioning, there were significantly greater BOLD-signal changes in the right amygdala, right rostral anterior cingulate (rACC) and dorsal anterior cingulate cortex (dACC) in women compared with men. In contrast, men showed significantly greater signal changes in bilateral rACC during extinction recall. CONCLUSIONS These results indicate sex differences in brain activation within the fear circuitry of healthy subjects despite similar peripheral autonomic responses. Furthermore, we found that regions where sex differences were previously reported in response to stress, also exhibited sex differences during fear conditioning and extinction.
Collapse
Affiliation(s)
- Kelimer Lebron-Milad
- Department of Psychiatry, Harvard Medical School & Massachusetts General Hospital, 149 13th St, Charlestown, MA, 02129, USA.
| | | | | | | | | | | | | | | |
Collapse
|