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Gustison ML, Muñoz-Castañeda R, Osten P, Phelps SM. Sexual coordination in a whole-brain map of prairie vole pair bonding. eLife 2024; 12:RP87029. [PMID: 38381037 PMCID: PMC10942618 DOI: 10.7554/elife.87029] [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] [Indexed: 02/22/2024] Open
Abstract
Sexual bonds are central to the social lives of many species, including humans, and monogamous prairie voles have become the predominant model for investigating such attachments. We developed an automated whole-brain mapping pipeline to identify brain circuits underlying pair-bonding behavior. We identified bonding-related c-Fos induction in 68 brain regions clustered in seven major brain-wide neuronal circuits. These circuits include known regulators of bonding, such as the bed nucleus of the stria terminalis, paraventricular hypothalamus, ventral pallidum, and prefrontal cortex. They also include brain regions previously unknown to shape bonding, such as ventromedial hypothalamus, medial preoptic area, and the medial amygdala, but that play essential roles in bonding-relevant processes, such as sexual behavior, social reward, and territorial aggression. Contrary to some hypotheses, we found that circuits active during mating and bonding were largely sexually monomorphic. Moreover, c-Fos induction across regions was strikingly consistent between members of a pair, with activity best predicted by rates of ejaculation. A novel cluster of regions centered in the amygdala remained coordinated after bonds had formed, suggesting novel substrates for bond maintenance. Our tools and results provide an unprecedented resource for elucidating the networks that translate sexual experience into an enduring bond.
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Affiliation(s)
- Morgan L Gustison
- Department of Integrative Biology, The University of Texas at AustinAustinUnited States
- Department of Psychology, Western UniversityLondonCanada
| | - Rodrigo Muñoz-Castañeda
- Cold Spring Harbor LaboratoryCold Spring HarborUnited States
- Appel Alzheimer's Disease Research Institute, Feil Family Brain and Mind Research Institute, Weill Cornell MedicineNew YorkUnited States
| | - Pavel Osten
- Cold Spring Harbor LaboratoryCold Spring HarborUnited States
| | - Steven M Phelps
- Department of Integrative Biology, The University of Texas at AustinAustinUnited States
- Institute for Neuroscience, The University of Texas at AustinAustinUnited States
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Khodadadi M, Helluy X, Güntürkün O, Behroozi M. Segmented spin-echo echo-planar imaging improves whole-brain BOLD functional MRI in awake pigeon brains. NMR IN BIOMEDICINE 2024; 37:e5034. [PMID: 37681398 DOI: 10.1002/nbm.5034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 08/10/2023] [Accepted: 08/18/2023] [Indexed: 09/09/2023]
Abstract
Functional magnetic resonance imaging (fMRI) in awake small animals such as pigeons or songbirds opens a new window into the neural fundaments of cognitive behavior. However, high-field fMRI in the avian brain is challenging due to strong local magnetic field inhomogeneities caused by air cavities in the skull. A spoiled gradient-echo fMRI sequence has already been used to map the auditory network in songbirds, but due to susceptibility artifacts only 50% of the whole brain could be recorded. Since whole-brain fMRI coverage is vital to reveal whole-brain networks, an MRI sequence that is less susceptible to these artifacts was required. This was recently achieved in various bird species by using a rapid acquisition with relaxation enhancement (RARE) sequence. Weak blood oxygen level-dependent (BOLD) sensitivity, low temporal resolution, and heat caused by the long train of RF refocusing pulses are the main limits of RARE fMRI at high magnetic fields. To go beyond some of these limitations, we here describe the implementation of a two-segmented spin-echo echo-planar imaging (SE-EPI). The proposed sequence covers the whole brain of awake pigeons. The sequence was applied to investigate the auditory network in awake pigeons and assessed the relative merits of this method in comparison with the single-shot RARE sequence. At the same imaging resolution but with a volume acquisition of 3 s versus 4 s for RARE, the two-segmented SE-EPI provided twice the strength of BOLD activity compared with the single-shot RARE sequence, while the image signal-to-noise ratio (SNR) and in particular the temporal SNR were very similar for the two sequences. In addition, the activation patterns in two-segmented SE-EPI data are more symmetric and larger than single-shot RARE results. Two-segmented SE-EPI represents a valid alternative to the RARE sequence in avian fMRI research since it yields more than twice the BOLD sensitivity per unit of time with much less energy deposition and better temporal resolution, particularly for event-related experiments.
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Affiliation(s)
- Mina Khodadadi
- Department of Biopsychology, Institute of Cognitive Neuroscience, Faculty of Psychology, Ruhr-University Bochum, Bochum, Germany
- Department of Basic Sciences, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Xavier Helluy
- Department of Biopsychology, Institute of Cognitive Neuroscience, Faculty of Psychology, Ruhr-University Bochum, Bochum, Germany
- Department of Neurophysiology, Faculty of Medicine, Ruhr University Bochum, Bochum, Germany
| | - Onur Güntürkün
- Department of Biopsychology, Institute of Cognitive Neuroscience, Faculty of Psychology, Ruhr-University Bochum, Bochum, Germany
- Research Center One Health Ruhr, Research Alliance Ruhr, Ruhr University Bochum, Bochum, Germany
| | - Mehdi Behroozi
- Department of Biopsychology, Institute of Cognitive Neuroscience, Faculty of Psychology, Ruhr-University Bochum, Bochum, Germany
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Gustison ML, Muñoz-Castañeda R, Osten P, Phelps SM. Sexual coordination in a whole-brain map of prairie vole pair bonding. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.07.26.550685. [PMID: 37546974 PMCID: PMC10402037 DOI: 10.1101/2023.07.26.550685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/08/2023]
Abstract
Sexual bonds are central to the social lives of many species, including humans, and monogamous prairie voles have become the predominant model for investigating such attachments. We developed an automated whole-brain mapping pipeline to identify brain circuits underlying pair-bonding behavior. We identified bonding-related c-Fos induction in 68 brain regions clustered in seven major brain-wide neuronal circuits. These circuits include known regulators of bonding, such as the bed nucleus of the stria terminalis, paraventricular hypothalamus, ventral pallidum, and prefrontal cortex. They also include brain regions previously unknown to shape bonding, such as ventromedial hypothalamus, medial preoptic area and the medial amygdala, but that play essential roles in bonding-relevant processes, such as sexual behavior, social reward and territorial aggression. Contrary to some hypotheses, we found that circuits active during mating and bonding were largely sexually monomorphic. Moreover, c-Fos induction across regions was strikingly consistent between members of a pair, with activity best predicted by rates of ejaculation. A novel cluster of regions centered in the amygdala remained coordinated after bonds had formed, suggesting novel substrates for bond maintenance. Our tools and results provide an unprecedented resource for elucidating the networks that translate sexual experience into an enduring bond.
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Affiliation(s)
- Morgan L. Gustison
- Department of Integrative Biology, The University of Texas at Austin; Austin, TX, USA
- Department of Psychology, Western University, ON, Canada
| | - Rodrigo Muñoz-Castañeda
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, USA
- Appel Alzheimer's Disease Research Institute, Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, New York, NY
| | - Pavel Osten
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, USA
| | - Steven M. Phelps
- Department of Integrative Biology, The University of Texas at Austin; Austin, TX, USA
- Institute for Neuroscience, The University of Texas at Austin; Austin, TX, USA
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Kenkel WM, Ortiz RJ, Yee JR, Perkeybile AM, Kulkarni P, Carter CS, Cushing BS, Ferris CF. Neuroanatomical and functional consequences of oxytocin treatment at birth in prairie voles. Psychoneuroendocrinology 2023; 150:106025. [PMID: 36709631 PMCID: PMC10064488 DOI: 10.1016/j.psyneuen.2023.106025] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 01/06/2023] [Accepted: 01/07/2023] [Indexed: 01/15/2023]
Abstract
Birth is a critical period for the developing brain, a time when surging hormone levels help prepare the fetal brain for the tremendous physiological changes it must accomplish upon entry into the 'extrauterine world'. A number of obstetrical conditions warrant manipulations of these hormones at the time of birth, but we know little of their possible consequences on the developing brain. One of the most notable birth signaling hormones is oxytocin, which is administered to roughly 50% of laboring women in the United States prior to / during delivery. Previously, we found evidence for behavioral, epigenetic, and neuroendocrine consequences in adult prairie vole offspring following maternal oxytocin treatment immediately prior to birth. Here, we examined the neurodevelopmental consequences in adult prairie vole offspring following maternal oxytocin treatment prior to birth. Control prairie voles and those exposed to 0.25 mg/kg oxytocin were scanned as adults using anatomical and functional MRI, with neuroanatomy and brain function analyzed as voxel-based morphometry and resting state functional connectivity, respectively. Overall, anatomical differences brought on by oxytocin treatment, while widespread, were generally small, while differences in functional connectivity, particularly among oxytocin-exposed males, were larger. Analyses of functional connectivity based in graph theory revealed that oxytocin-exposed males in particular showed markedly increased connectivity throughout the brain and across several parameters, including closeness and degree. These results are interpreted in the context of the organizational effects of oxytocin exposure in early life and these findings add to a growing literature on how the perinatal brain is sensitive to hormonal manipulations at birth.
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Affiliation(s)
- William M Kenkel
- Department of Psychological & Brain Sciences, University of Delaware, Newark, DE, USA; Department of Psychology, Center for Translational NeuroImaging, Northeastern University, Boston, MA, USA.
| | - Richard J Ortiz
- Department of Psychology, Center for Translational NeuroImaging, Northeastern University, Boston, MA, USA; Department of Chemistry and Biochemistry, New Mexico State University, Las Cruces, NM, USA; Department of Biological Sciences, University of Texas at El Paso, El Paso, TX, USA
| | - Jason R Yee
- Department of Psychology, Center for Translational NeuroImaging, Northeastern University, Boston, MA, USA; Institute of Animal Welfare Science, University of Veterinary Medicine, Vienna, Austria
| | - Allison M Perkeybile
- Department of Psychology, Center for Translational NeuroImaging, Northeastern University, Boston, MA, USA; Department of Psychology, University of Virginia, Charlottesville, VA, USA
| | - Praveen Kulkarni
- Department of Psychology, Center for Translational NeuroImaging, Northeastern University, Boston, MA, USA
| | - C Sue Carter
- Department of Psychology, University of Virginia, Charlottesville, VA, USA
| | - Bruce S Cushing
- Department of Biological Sciences, University of Texas at El Paso, El Paso, TX, USA
| | - Craig F Ferris
- Department of Psychology, Center for Translational NeuroImaging, Northeastern University, Boston, MA, USA
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Kenkel WM, Kingsbury MA, Reinhart JM, Cetinbas M, Sadreyev RI, Carter CS, Perkeybile AM. Lasting consequences on physiology and social behavior following cesarean delivery in prairie voles. Horm Behav 2023; 150:105314. [PMID: 36731301 PMCID: PMC10023354 DOI: 10.1016/j.yhbeh.2023.105314] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Revised: 01/10/2023] [Accepted: 01/12/2023] [Indexed: 02/04/2023]
Abstract
Cesarean delivery is associated with diminished plasma levels of several 'birth-signaling' hormones, such as oxytocin and vasopressin. These same hormones have been previously shown to exert organizational effects when acting in early life. For example, our previous work found a broadly gregarious phenotype in prairie voles exposed to oxytocin at birth. Meanwhile, cesarean delivery has been previously associated with changes in social behavior and metabolic processes related to oxytocin and vasopressin. In the present study, we investigated the long-term neurodevelopmental consequences of cesarean delivery in prairie voles. After cross-fostering, vole pups delivered either via cesarean or vaginal delivery were studied throughout development. Cesarean-delivered pups responded to isolation differently in terms of their vocalizations (albeit in opposite directions in the two experiments), huddled in less cohesive groups under warmed conditions, and shed less heat. As young adults, we observed no differences in anxiety-like or alloparental behavior. However, in adulthood, cesarean-delivered voles of both sexes failed to form partner preferences with opposite sex conspecifics. In a follow-up study, we replicated this deficit in partner-preference formation among cesarean-delivered voles and were able to normalize pair-bonding behavior by treating cesarean-delivered vole pups with oxytocin (0.25 mg/kg) at delivery. Finally, we detected minor differences in regional oxytocin receptor expression within the brains of cesarean-delivered voles, as well as microbial composition of the gut. Gene expression changes in the gut epithelium indicated that cesarean-delivered male voles have altered gut development. These results speak to the possibility of unintended developmental consequences of cesarean delivery, which currently accounts for 32.9 % of deliveries in the U.S. and suggest that further research should be directed at whether hormone replacement at delivery influences behavioral outcomes in later life.
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Affiliation(s)
- William M Kenkel
- Department of Psychological and Brain Sciences, University of Delaware, Newark, DE, United States of America.
| | - Marcy A Kingsbury
- Department of Pediatrics, Massachusetts General Hospital, Cambridge, MA, United States of America
| | - John M Reinhart
- Department of Psychology and Neuroscience, Baylor University, Waco, TX, United States of America
| | - Murat Cetinbas
- Department of Molecular Biology, Massachusetts General Hospital, Boston, MA, United States of America; Department of Genetics, Massachusetts General Hospital, Boston, MA, United States of America
| | - Ruslan I Sadreyev
- Department of Molecular Biology, Massachusetts General Hospital, Boston, MA, United States of America; Harvard Medical School, Department of Pathology, Massachusetts General Hospital, Boston, MA, United States of America
| | - C Sue Carter
- Department of Psychology, University of Virginia, Charlottesville, VA, United States of America
| | - Allison M Perkeybile
- Department of Psychology, University of Virginia, Charlottesville, VA, United States of America
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López-Gutiérrez MF, Mejía-Chávez S, Alcauter S, Portillo W. The neural circuits of monogamous behavior. Front Neural Circuits 2022; 16:978344. [PMID: 36247729 PMCID: PMC9559370 DOI: 10.3389/fncir.2022.978344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Accepted: 09/07/2022] [Indexed: 11/13/2022] Open
Abstract
The interest in studying the neural circuits related to mating behavior and mate choice in monogamous species lies in the parallels found between human social structure and sexual behavior and that of other mammals that exhibit social monogamy, potentially expanding our understanding of human neurobiology and its underlying mechanisms. Extensive research has suggested that social monogamy, as opposed to non-monogamy in mammals, is a consequence of the neural encoding of sociosensory information from the sexual partner with an increased reward value. Thus, the reinforced value of the mate outweighs the reward value of mating with any other potential sexual partners. This mechanism reinforces the social relationship of a breeding pair, commonly defined as a pair bond. In addition to accentuated prosocial behaviors toward the partner, other characteristic behaviors may appear, such as territorial and partner guarding, selective aggression toward unfamiliar conspecifics, and biparental care. Concomitantly, social buffering and distress upon partner separation are also observed. The following work intends to overview and compare known neural and functional circuits that are related to mating and sexual behavior in monogamous mammals. We will particularly discuss reports on Cricetid rodents of the Microtus and Peromyscus genus, and New World primates (NWP), such as the Callicebinae subfamily of the titi monkey and the marmoset (Callithrix spp.). In addition, we will mention the main factors that modulate the neural circuits related to social monogamy and how that modulation may reflect phenotypic differences, ultimately creating the widely observed diversity in social behavior.
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Ortiz RJ, Wagler AE, Yee JR, Kulkarni PP, Cai X, Ferris CF, Cushing BS. Functional Connectivity Differences Between Two Culturally Distinct Prairie Vole Populations: Insights Into the Prosocial Network. BIOLOGICAL PSYCHIATRY. COGNITIVE NEUROSCIENCE AND NEUROIMAGING 2022; 7:576-587. [PMID: 34839018 DOI: 10.1016/j.bpsc.2021.11.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 10/21/2021] [Accepted: 11/08/2021] [Indexed: 12/17/2022]
Abstract
BACKGROUND The goal of this study was to elucidate the fundamental connectivity-resting-state connectivity-within and between nodes in the olfactory and prosocial (PS) cores, which permits the expression of social monogamy in males; and how differential connectivity accounts for differential expression of prosociality and aggression. METHODS Using resting-state functional magnetic resonance imaging, we integrated graph theory analysis to compare functional connectivity between two culturally/behaviorally distinct male prairie voles (Microtusochrogaster). RESULTS Illinois males display significantly higher levels of prosocial behavior and lower levels of aggression than KI (Kansas dam and Illinois sire) males, which are associated with differences in underlying neural mechanisms and brain microarchitecture. Shared connectivity 1) between the anterior hypothalamic area and the paraventricular nucleus and 2) between the medial preoptic area and bed nucleus of the stria terminalis and the nucleus accumbens core suggests essential relationships required for male prosocial behavior. In contrast, Illinois males displayed higher levels of global connectivity and PS intracore connectivity, a greater role for the bed nucleus of the stria terminalis and anterior hypothalamic area, which were degree connectivity hubs, and greater PS and olfactory intercore connectivity. CONCLUSIONS These findings suggest that behavioral differences are associated with PS core degree of connectivity and postsignal induction. This transgenerational system may serve as powerful mental health and drug abuse translational model in future studies.
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Affiliation(s)
- Richard J Ortiz
- Department of Biological Sciences, The University of Texas at El Paso, El Paso, Texas
| | - Amy E Wagler
- Department of Mathematical Sciences, The University of Texas at El Paso, El Paso, Texas
| | - Jason R Yee
- Department of Psychology, Center for Translational NeuroImaging, Northeastern University, Boston, Massachusetts
| | - Praveen P Kulkarni
- Department of Psychology, Center for Translational NeuroImaging, Northeastern University, Boston, Massachusetts
| | - Xuezhu Cai
- Department of Psychology, Center for Translational NeuroImaging, Northeastern University, Boston, Massachusetts
| | - Craig F Ferris
- Department of Psychology, Center for Translational NeuroImaging, Northeastern University, Boston, Massachusetts
| | - Bruce S Cushing
- Department of Biological Sciences, The University of Texas at El Paso, El Paso, Texas.
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Coleman JR, Madularu D, Ortiz RJ, Athanassiou M, Knudsen A, Alkislar I, Cai X, Kulkarni PP, Cushing BS, Ferris CF. Changes in brain structure and function following chronic exposure to inhaled vaporised cannabis during periadolescence in female and male mice: A multimodal MRI study. Addict Biol 2022; 27:e13169. [PMID: 35470553 DOI: 10.1111/adb.13169] [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: 04/22/2021] [Revised: 03/04/2022] [Accepted: 03/08/2022] [Indexed: 11/28/2022]
Abstract
BACKGROUND AND AIMS Social norms and legality surrounding the use of medical and recreational cannabis are changing rapidly. The prevalence of cannabis use in adolescence is increasing. The aim of this study was to assess any sex-based neurobiological effects of chronically inhaled, vaporised cannabis on adolescent female and male mice. METHODS Female and male mice were exposed daily to vaporised cannabis (10.3% Δ-9-tetrahydrocannabinol [THC] and 0.05% cannabidiol [CBD]) or placebo from postnatal day 23 to day 51. Following cessation of treatment, mice were examined for changes in brain structure and function using noninvasive multimodal magnetic resonance imaging (MRI). Data from voxel-based morphometry, diffusion weighted imaging and rest state functional connectivity were registered to and analysed with a 3D mouse atlas with 139 brain areas. Following imaging, mice were tested for their preference for a novel object. RESULTS The effects were sexually dimorphic with females showing a unique distribution and inverse correlation between measures of fractional anisotropy and apparent diffusion coefficient localised to the forebrain and hindbrain. In contrast males displayed significant increased functional coupling with the thalamus, hypothalamus and brainstem reticular activating system as compared with controls. Cannabis males also presented with altered hippocampal coupling and deficits in cognitive function. CONCLUSION Chronic exposure to inhaled vaporised cannabis had significant effects on brain structure and function in early adulthood corroborating much of the literature. Females presented with changes in grey matter microarchitecture, while males showed altered functional connectivity in hippocampal circuitry and deficits in object recognition.
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Affiliation(s)
- James R. Coleman
- Center for Translational NeuroImaging Northeastern University Boston Massachusetts USA
| | - Dan Madularu
- Center for Translational NeuroImaging Northeastern University Boston Massachusetts USA
| | - Richard J. Ortiz
- Department of Biological Sciences University of Texas at El Paso El Paso Texas USA
| | - Maria Athanassiou
- Centre de recherche de l'Institut Universitaire en Santé Mentale de Montréal Montreal Québec Canada
| | - Alexa Knudsen
- Center for Translational NeuroImaging Northeastern University Boston Massachusetts USA
| | - Ilayda Alkislar
- Center for Translational NeuroImaging Northeastern University Boston Massachusetts USA
| | - Xuezhu Cai
- Center for Translational NeuroImaging Northeastern University Boston Massachusetts USA
| | - Praveen P. Kulkarni
- Center for Translational NeuroImaging Northeastern University Boston Massachusetts USA
| | - Bruce S. Cushing
- Department of Biological Sciences University of Texas at El Paso El Paso Texas USA
| | - Craig F. Ferris
- Center for Translational NeuroImaging Northeastern University Boston Massachusetts USA
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9
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Ferris CF. Applications in Awake Animal Magnetic Resonance Imaging. Front Neurosci 2022; 16:854377. [PMID: 35450017 PMCID: PMC9017993 DOI: 10.3389/fnins.2022.854377] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 03/09/2022] [Indexed: 12/16/2022] Open
Abstract
There are numerous publications on methods and applications for awake functional MRI across different species, e.g., voles, rabbits, cats, dogs, and rhesus macaques. Each of these species, most obviously rhesus monkey, have general or unique attributes that provide a better understanding of the human condition. However, much of the work today is done on rodents. The growing number of small bore (≤30 cm) high field systems 7T- 11.7T favor the use of small animals. To that point, this review is primarily focused on rodents and their many applications in awake function MRI. Applications include, pharmacological MRI, drugs of abuse, sensory evoked stimuli, brain disorders, pain, social behavior, and fear.
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Derksen M, Rhemrev V, van der Veer M, Jolink L, Zuidinga B, Mulder T, Reneman L, Nederveen A, Feenstra M, Willuhn I, Denys D. Animal studies in clinical MRI scanners: A custom setup for combined fMRI and deep-brain stimulation in awake rats. J Neurosci Methods 2021; 360:109240. [PMID: 34097929 DOI: 10.1016/j.jneumeth.2021.109240] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2020] [Revised: 03/30/2021] [Accepted: 06/01/2021] [Indexed: 11/26/2022]
Abstract
BACKGROUND In humans, functional magnetic resonance imaging (fMRI) cannot be used to its full potential to study the effects of deep-brain stimulation (DBS) on the brain due to safety reasons. Application of DBS in small animals is an alternative, but was hampered by technical limitations thus far. NEW METHOD We present a novel setup that extends the range of available applications by studying animals in a clinical scanner. We used a 3 T-MRI scanner with a custom-designed receiver coil and a restrainer to measure brain activity in awake rats. DBS electrodes made of silver were used to minimize electromagnetic artifacts. Before scanning, rats were habituated to the restrainer. RESULTS Using our novel setup, we observed minor DBS-electrode artifacts, which did not interfere with brain-activity measurements significantly. Movement artifacts were also minimal and were not further reduced by restrainer habituation. Bilateral DBS in the dorsal part of the ventral striatum (dVS) resulted in detectable increases in brain activity around the electrodes tips. COMPARISON WITH EXISTING METHODS This novel setup offers a low-cost alternative to dedicated small-animal scanners. Moreover, it can be implemented in widely available clinical 3 T scanners. Although spatial and temporal resolution was lower than what is achieved in anesthetized rats in high-field small-animal scanners, we obtained scans in awake animals, thus, testing the effects of bilateral DBS of the dVS in a more physiological state. CONCLUSIONS With this new technical setup, the neurobiological mechanism of action of DBS can be explored in awake, restrained rats in a clinical 3 T-MRI scanner.
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Affiliation(s)
- Maik Derksen
- The Netherlands Institute for Neuroscience, Royal Netherlands Academy of Arts and Sciences, Amsterdam, the Netherlands; Department of Psychiatry, Amsterdam University Medical Centers (location AMC), University of Amsterdam, Amsterdam, the Netherlands
| | - Valerie Rhemrev
- The Netherlands Institute for Neuroscience, Royal Netherlands Academy of Arts and Sciences, Amsterdam, the Netherlands
| | - Marijke van der Veer
- The Netherlands Institute for Neuroscience, Royal Netherlands Academy of Arts and Sciences, Amsterdam, the Netherlands
| | - Linda Jolink
- The Netherlands Institute for Neuroscience, Royal Netherlands Academy of Arts and Sciences, Amsterdam, the Netherlands
| | - Birte Zuidinga
- The Netherlands Institute for Neuroscience, Royal Netherlands Academy of Arts and Sciences, Amsterdam, the Netherlands
| | - Tosca Mulder
- The Netherlands Institute for Neuroscience, Royal Netherlands Academy of Arts and Sciences, Amsterdam, the Netherlands
| | - Liesbeth Reneman
- Department of Radiology and Nuclear Medicine, Amsterdam University Medical Centers (location AMC), University of Amsterdam, Amsterdam, the Netherlands
| | - Aart Nederveen
- Department of Radiology and Nuclear Medicine, Amsterdam University Medical Centers (location AMC), University of Amsterdam, Amsterdam, the Netherlands
| | - Matthijs Feenstra
- The Netherlands Institute for Neuroscience, Royal Netherlands Academy of Arts and Sciences, Amsterdam, the Netherlands; Department of Psychiatry, Amsterdam University Medical Centers (location AMC), University of Amsterdam, Amsterdam, the Netherlands
| | - Ingo Willuhn
- The Netherlands Institute for Neuroscience, Royal Netherlands Academy of Arts and Sciences, Amsterdam, the Netherlands; Department of Psychiatry, Amsterdam University Medical Centers (location AMC), University of Amsterdam, Amsterdam, the Netherlands.
| | - Damiaan Denys
- The Netherlands Institute for Neuroscience, Royal Netherlands Academy of Arts and Sciences, Amsterdam, the Netherlands; Department of Psychiatry, Amsterdam University Medical Centers (location AMC), University of Amsterdam, Amsterdam, the Netherlands
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Rodriguez CI, Vergara VM, Davies S, Calhoun VD, Savage DD, Hamilton DA. Detection of prenatal alcohol exposure using machine learning classification of resting-state functional network connectivity data. Alcohol 2021; 93:25-34. [PMID: 33716098 DOI: 10.1016/j.alcohol.2021.03.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 02/28/2021] [Accepted: 03/01/2021] [Indexed: 01/07/2023]
Abstract
Fetal Alcohol Spectrum Disorder (FASD), a wide range of physical and neurobehavioral abnormalities associated with prenatal alcohol exposure (PAE), is recognized as a significant public health concern. Advancements in the diagnosis of FASD have been hindered by a lack of consensus in diagnostic criteria and limited use of objective biomarkers. Previous research from our group utilized resting-state functional magnetic resonance imaging (fMRI) to measure functional network connectivity (FNC), which revealed several sex- and region-dependent alterations in FNC as a result of moderate PAE relative to controls. Considering that FNC is sensitive to moderate PAE, this study explored the use of FNC data and machine learning methods to detect PAE among a sample of rodents exposed to alcohol prenatally and controls. We utilized previously acquired resting state fMRI data collected from adult rats exposed to moderate levels of prenatal alcohol (PAE) or a saccharin control solution (SAC) to assess FNC of resting state networks extracted by spatial group independent component analysis (GICA). FNC data were subjected to binary classification using support vector machine (SVM) -based algorithms and leave-one-out-cross validation (LOOCV) in an aggregated sample of males and females (n = 48; 12 male PAE, 12 female PAE, 12 male SAC, 12 female SAC), a males-only sample (n = 24; 12 PAE, 12 SAC), and a females-only sample (n = 24; 12 PAE, 12 SAC). Results revealed that a quadratic SVM (QSVM) kernel was significantly effective for PAE detection in females. QSVM kernel-based classification resulted in accuracy rates of 62.5% for all animals, 58.3% for males, and 79.2% for females. Additionally, qualitative evaluation of QSVM weights implicates an overarching theme of several hippocampal and cortical networks in contributing to the formation of correct classification decisions by QSVM. Our results suggest that binary classification using QSVM and adult female FNC data is a potential candidate for the translational development of novel and non-invasive techniques for the identification of FASD.
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Abstract
Prairie voles have emerged as an important rodent model for understanding the neuroscience of social behavior. Prairie voles are well known for their capacity for pair bonding and alloparental care. These behavioral phenomena overlap with human social behavior but are not commonly observed in traditional rodent models. In this article, we highlight the many benefits of using prairie voles in neuroscience research. We begin by describing the advantages of using diverse and non-traditional study models. We then focus on social behaviors, including pair bonding, alloparental care, and peer interactions, that have brought voles to the forefront of social neuroscience. We describe many additional features of prairie vole biology and behavior that provide researchers with opportunities to address an array of research questions. We also survey neuroethological methods that have been used with prairie voles, from classic to modern techniques. Finally, we conclude with a discussion of other vole species, particularly meadow voles, and their own unique advantages for neuroscience studies. This article provides a foundation for researchers who are new to working with voles, as well as for experienced neuroscientists who want to expand their research scope. © 2021 Wiley Periodicals LLC.
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Affiliation(s)
- William M. Kenkel
- Department of Psychological & Brain Sciences, University of Delaware, Newark, DE 19716
| | - Morgan L. Gustison
- Department of Integrative Biology, University of Texas at Austin, Austin, TX 78712 USA
| | - Annaliese K. Beery
- Department of Integrative Biology, University of California, Berkeley, Berkeley, CA 94720 USA
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López-Gutiérrez MF, Gracia-Tabuenca Z, Ortiz JJ, Camacho FJ, Young LJ, Paredes RG, Díaz NF, Portillo W, Alcauter S. Brain functional networks associated with social bonding in monogamous voles. eLife 2021; 10:e55081. [PMID: 33443015 PMCID: PMC7847304 DOI: 10.7554/elife.55081] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2020] [Accepted: 01/11/2021] [Indexed: 12/30/2022] Open
Abstract
Previous studies have related pair-bonding in Microtus ochrogaster, the prairie vole, with plastic changes in several brain regions. However, the interactions between these socially relevant regions have yet to be described. In this study, we used resting-state magnetic resonance imaging to explore bonding behaviors and functional connectivity of brain regions previously associated with pair-bonding. Thirty-two male and female prairie voles were scanned at baseline, 24 hr, and 2 weeks after the onset of cohabitation. By using network-based statistics, we identified that the functional connectivity of a corticostriatal network predicted the onset of affiliative behavior, while another predicted the amount of social interaction during a partner preference test. Furthermore, a network with significant changes in time was revealed, also showing associations with the level of partner preference. Overall, our findings revealed the association between network-level functional connectivity changes and social bonding.
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Affiliation(s)
| | - Zeus Gracia-Tabuenca
- Instituto de Neurobiología, Universidad Nacional Autónoma de MéxicoQuerétaroMexico
| | - Juan J Ortiz
- Instituto de Neurobiología, Universidad Nacional Autónoma de MéxicoQuerétaroMexico
| | - Francisco J Camacho
- Instituto de Neurobiología, Universidad Nacional Autónoma de MéxicoQuerétaroMexico
| | - Larry J Young
- Silvio O Conte Center for Oxytocin and Social Cognition, Center for Translational Social Neuroscience, Yerkes National Primate Research Center, Department of Psychiatry and Behavioral Sciences, Emory UniversityAtlantaUnited States
| | - Raúl G Paredes
- Instituto de Neurobiología, Universidad Nacional Autónoma de MéxicoQuerétaroMexico
- Escuela Nacional de Estudios Superiores, Unidad Juriquilla, Universidad Nacional Autónoma de MéxicoQuerétaroMexico
| | - Néstor F Díaz
- Instituto Nacional de Perinatología Isidro Espinosa de los ReyesCiudad de MéxicoMexico
| | - Wendy Portillo
- Instituto de Neurobiología, Universidad Nacional Autónoma de MéxicoQuerétaroMexico
| | - Sarael Alcauter
- Instituto de Neurobiología, Universidad Nacional Autónoma de MéxicoQuerétaroMexico
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Lawson CM, Rentrup KFG, Cai X, Kulkarni PP, Ferris CF. Using multimodal MRI to investigate alterations in brain structure and function in the BBZDR/Wor rat model of type 2 diabetes. Animal Model Exp Med 2020; 3:285-294. [PMID: 33532703 PMCID: PMC7824967 DOI: 10.1002/ame2.12140] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 09/13/2020] [Accepted: 09/21/2020] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND This is an exploratory study using multimodal magnetic resonance imaging (MRI) to interrogate the brain of rats with type 2 diabetes (T2DM) as compared to controls. It was hypothesized there would be changes in brain structure and function that reflected the human disorder, thus providing a model system by which to follow disease progression with noninvasive MRI. METHODS The transgenic BBZDR/Wor rat, an animal model of T2MD, and age-matched controls were studied for changes in brain structure using voxel-based morphometry, alteration in white and gray matter microarchitecture using diffusion weighted imaging with indices of anisotropy, and functional coupling using resting-state BOLD functional connectivity. Images from each modality were registered to, and analyzed, using a 3D MRI rat atlas providing site-specific data on over 168 different brain areas. RESULTS There was an overall reduction in brain volume focused primarily on the somatosensory cortex, cerebellum, and white matter tracts. The putative changes in white and gray matter microarchitecture were pervasive affecting much of the brain and not localized to any region. There was a general increase in connectivity in T2DM rats as compared to controls. The cerebellum presented with strong functional coupling to pons and brainstem in T2DM rats but negative connectivity to hippocampus. CONCLUSION The neuroradiological measures collected in BBBKZ/Wor rats using multimodal imaging methods did not reflect those reported for T2DB patients in the clinic. The data would suggest the BBBKZ/Wor rat is not an appropriate imaging model for T2DM.
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Affiliation(s)
| | | | - Xuezhu Cai
- Center for Translational NeuroImagingNortheastern UniversityBostonMAUSA
| | | | - Craig F. Ferris
- Center for Translational NeuroImagingNortheastern UniversityBostonMAUSA
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15
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Ortiz R, Yee JR, Kulkarni PP, Solomon NG, Keane B, Cai X, Ferris CF, Cushing BS. Differences in Diffusion-Weighted Imaging and Resting-State Functional Connectivity Between Two Culturally Distinct Populations of Prairie Vole. BIOLOGICAL PSYCHIATRY: COGNITIVE NEUROSCIENCE AND NEUROIMAGING 2020; 7:588-597. [PMID: 33239258 DOI: 10.1016/j.bpsc.2020.08.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 08/07/2020] [Accepted: 08/18/2020] [Indexed: 02/07/2023]
Abstract
BACKGROUND We used the highly prosocial prairie vole to test the hypothesis that higher-order brain structure-microarchitecture and functional connectivity (FC)-would differ between males from populations with distinctly different levels of prosocial behavior. Specifically, we studied males from Illinois (IL), which display high levels of prosocial behavior, and first generation males from Kansas dams and IL males (KI), which display the lowest level of prosocial behavior and higher aggression. Behavioral differences between these males are associated with overexpression of estrogen receptor alpha in the medial amygdala and bed nucleus of the stria terminalis and neuropeptide expression in the paraventricular nucleus. METHODS We compared apparent diffusion coefficient, fractional anisotropy, and blood oxygen level-dependent resting-state FC between males. RESULTS IL males displayed higher apparent diffusion coefficient in regions associated with prosocial behavior, including the bed nucleus of the stria terminalis, paraventricular nucleus, and anterior thalamic nuclei, while KI males showed higher apparent diffusion coefficient in the brainstem. KI males showed significantly higher fractional anisotropy than IL males in 26 brain regions, with the majority being in the brainstem reticular activating system. IL males showed more blood oxygen level-dependent resting-state FC between the bed nucleus of the stria terminalis, paraventricular nucleus, and medial amygdala along with other brain regions, including the hippocampus and areas associated with social and reward networks. CONCLUSIONS Our results suggest that gray matter microarchitecture and FC may play a role the expression of prosocial behavior and that differences in other brain regions, especially the brainstem, could be involved. The differences between males suggests that this system represents a potentially valuable model system for studying emotional differences and vulnerability to stress and addiction.
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Affiliation(s)
- Richard Ortiz
- Department of Biological Sciences, University of Texas at El Paso, El Paso, Texas
| | - Jason R Yee
- Center for Translational NeuroImaging, Department of Psychology, Northeastern University, Boston, Massachusetts
| | - Praveen P Kulkarni
- Center for Translational NeuroImaging, Department of Psychology, Northeastern University, Boston, Massachusetts
| | | | - Brian Keane
- Department of Biological Sciences, Miami University, Hamilton, Ohio
| | - Xuezhu Cai
- Center for Translational NeuroImaging, Department of Psychology, Northeastern University, Boston, Massachusetts
| | - Craig F Ferris
- Center for Translational NeuroImaging, Department of Psychology, Northeastern University, Boston, Massachusetts
| | - Bruce S Cushing
- Department of Biological Sciences, University of Texas at El Paso, El Paso, Texas.
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16
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Prounis GS, Ophir AG. One cranium, two brains not yet introduced: Distinct but complementary views of the social brain. Neurosci Biobehav Rev 2020; 108:231-245. [PMID: 31743724 PMCID: PMC6949399 DOI: 10.1016/j.neubiorev.2019.11.011] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Revised: 10/04/2019] [Accepted: 11/15/2019] [Indexed: 12/16/2022]
Abstract
Social behavior is pervasive across the animal kingdom, and elucidating how the brain enables animals to respond to social contexts is of great interest and profound importance. Our understanding of 'the social brain' has been fractured as it has matured. Two drastically different conceptualizations of the social brain have emerged with relatively little awareness of each other. In this review, we briefly recount the history behind the two dominant definitions of a social brain. The divide that has emerged between these visions can, in part, be attributed to differential attention to cortical or sub-cortical regions in the brain, and differences in methodology, comparative perspectives, and emphasis on functional specificity or generality. We discuss how these factors contribute to a lack of communication between research efforts, and propose ways in which each version of the social brain can benefit from the perspectives, tools, and approaches of the other. Interface between the two characterizations of social brain networks is sure to provide essential insight into what the social brain encompasses.
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Affiliation(s)
- George S Prounis
- Department of Psychology, Cornell University, Ithaca, NY, 14853, USA
| | - Alexander G Ophir
- Department of Psychology, Cornell University, Ithaca, NY, 14853, USA.
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17
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Paulson C, Chien D, Lin F, Seidlits S, Cai Y, Sargolzaei S, Harris NG, Giza CC. A Novel Modular Headmount Design for non-invasive Scalp EEG Recordings in Awake Animal Models. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2019; 2018:5422-5425. [PMID: 30441563 DOI: 10.1109/embc.2018.8513686] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
We have designed and developed a novel, noninvasive modular headmount to be used for awake animal scalp electroencephalography (EEG). The design is based on a developing rat that will accommodate rapid head growth. Desired characteristics include non-invasiveness, adjustable quantity and positioning, light weight, and tolerability by the animal. Axial Dependent Modular Electrode Mount (ADMEM), as designed here, addresses the aforementioned constraints by using light-weight and adjustable materials. The initial prototype of ADMEM has been tested in vivo with rat pups, using the open field test to assess for stress and anxiety at two post-installation time-points: one day after ADMEM installation (acute time-point) and four days after ADMEM installation (sub-acute time-point). There was no significant difference in normal developmental weight gain between Control and ADMEM rat groups. Although no significant difference was found in the level of anxiety between groups at the acute time-point, the ADMEM group spent significantly less time in the center of the open field test, suggesting higher anxiety. The test also showed no difference in the measured traveled distances between Control and ADMEM groups on either time-points.
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18
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Kenkel WM, Perkeybile AM, Yee JR, Carter CS. Rewritable fidelity: How repeated pairings and age influence subsequent pair-bond formation in male prairie voles. Horm Behav 2019; 113:47-54. [PMID: 31042456 PMCID: PMC6589101 DOI: 10.1016/j.yhbeh.2019.04.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2018] [Revised: 03/04/2019] [Accepted: 04/27/2019] [Indexed: 11/15/2022]
Abstract
The prairie vole has proven a valuable animal model for the neurobiological study of social monogamy and pair bonding. Previous research has focused almost exclusively on virgin prairie voles forming pair-bonds for the first time - a paradigm with limited relevance to human social behavior. In the present study, we used stud males to assess the impact of repeated pair-bond formation and dissolution on the behaviors and neurobiology relevant to subsequent pair-bond formation. Stud males were tested for behavioral and neurobiological effects of repeated pair-bonding after the 1st, 5th, and 10th pairing. Aged breeder males that experienced minimal pair-bond dissolution were included to control for the effects of aging. Results showed that male prairie voles readily form new pair-bonds after repeated pair-bond dissolution. In terms of social monogamy, old age was associated with males spending less time in close social contact with unfamiliar females. There were no effects of age nor number of lifetime pairings on depressive-like behavior or paternal behavior toward pups. Within the brain, the patterns of oxytocin (OTR) and vasopressin type 1a (V1aR) receptors were largely unaffected, with the following exceptions: 1) males with only a single pairing had higher OTR densities in the paraventricular thalamus and bed nucleus of the stria terminalis; 2) there was an age-related increase in the density of OTR in the caudate putamen and an age-related decline in the density of V1aR in the cortical amygdala. The present findings have translational relevance to human social behavior in the context of aging and social experience.
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Affiliation(s)
- William M Kenkel
- Neuroscience Institute, Georgia State University, United States of America; Kinsey Institute, Indiana University, United States of America.
| | | | - Jason R Yee
- University of Veterinary Medicine, Vienna, Austria
| | - C Sue Carter
- Kinsey Institute, Indiana University, United States of America
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19
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Kenkel WM, Perkeybile AM, Yee JR, Pournajafi-Nazarloo H, Lillard TS, Ferguson EF, Wroblewski KL, Ferris CF, Carter CS, Connelly JJ. Behavioral and epigenetic consequences of oxytocin treatment at birth. SCIENCE ADVANCES 2019; 5:eaav2244. [PMID: 31049395 PMCID: PMC6494504 DOI: 10.1126/sciadv.aav2244] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2018] [Accepted: 03/18/2019] [Indexed: 05/21/2023]
Abstract
Oxytocin is used in approximately half of all births in the United States during labor induction and/or augmentation. However, the effects of maternal oxytocin administration on offspring development have not been fully characterized. Here, we used the socially monogamous prairie vole to examine the hypothesis that oxytocin exposure at birth can have long-term developmental consequences. Maternally administered oxytocin increased methylation of the oxytocin receptor (Oxtr) in the fetal brain. As adults, oxytocin-exposed voles were more gregarious, with increased alloparental caregiving toward pups and increased close social contact with other adults. Cross-fostering indicated that these effects were the result of direct action on the offspring, rather than indirect effects via postnatal changes in maternal behavior. Male oxytocin-exposed offspring had increased oxytocin receptor density and expression in the brain as adults. These results show that long-term effects of perinatal oxytocin may be mediated by an epigenetic mechanism.
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Affiliation(s)
- W. M. Kenkel
- Kinsey Institute, Indiana University, Lindley Hall, 150 S. Woodlawn Avenue, Bloomington, IN 47405, USA
- Neuroscience Institute, Georgia State University, 100 Piedmont Ave SE, Atlanta GA 30303, USA
- Corresponding author.
| | - A.-M. Perkeybile
- Kinsey Institute, Indiana University, Lindley Hall, 150 S. Woodlawn Avenue, Bloomington, IN 47405, USA
| | - J. R. Yee
- Kinsey Institute, Indiana University, Lindley Hall, 150 S. Woodlawn Avenue, Bloomington, IN 47405, USA
- Department of Psychology, Northeastern University, Boston, MA 02115, USA
| | - H. Pournajafi-Nazarloo
- Kinsey Institute, Indiana University, Lindley Hall, 150 S. Woodlawn Avenue, Bloomington, IN 47405, USA
| | - T. S. Lillard
- Department of Psychology, University of Virginia, Charlottesville, VA 22903, USA
| | - E. F. Ferguson
- Department of Psychology, University of Virginia, Charlottesville, VA 22903, USA
| | - K. L. Wroblewski
- Department of Psychology, University of Virginia, Charlottesville, VA 22903, USA
| | - C. F. Ferris
- Department of Psychology, Northeastern University, Boston, MA 02115, USA
| | - C. S. Carter
- Kinsey Institute, Indiana University, Lindley Hall, 150 S. Woodlawn Avenue, Bloomington, IN 47405, USA
| | - J. J. Connelly
- Department of Psychology, University of Virginia, Charlottesville, VA 22903, USA
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20
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Mo S, Feng S, Chen H. [Research on the rest functional magnetic resonance imaging before and after smoking cessation]. SHENG WU YI XUE GONG CHENG XUE ZA ZHI = JOURNAL OF BIOMEDICAL ENGINEERING = SHENGWU YIXUE GONGCHENGXUE ZAZHI 2018; 35:87-91. [PMID: 29745606 PMCID: PMC10307547 DOI: 10.7507/1001-5515.201609026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 09/13/2016] [Indexed: 11/03/2022]
Abstract
The aim of this paper is to reveal the change of the brain function for nicotine addicts after smoking cessation, and explore the basis of neural physiology for the nicotine addicts in the process of smoking cessation. Fourteen subjects, who have a strong dependence on nicotine, have agreed to give up smoking and insist on completing the test, and 11 volunteers were recruited as the controls. The resting state functional magnetic resonance imaging and the regional homogeneity (ReHo) algorithm have been used to study the neural activity before and after smoking cessation. A two factors mixed design was used to investigate within-group effects and between-group effects. After 2 weeks' smoking cessation, the increased ReHo value were exhibited in the brain area of supplementary motor area, paracentral lobule, calcarine, cuneus and lingual gyrus. It suggested that the synchronization of neural activity was enhanced in these brain areas. And between-group interaction effects were appeared in supplementary motor area, paracentral lobule, precentral gyrus, postcentral gyrus, and superior frontal gyrus. The results indicate that the brain function in supplementary motor area of smoking addicts would be enhanced significantly after 2 weeks' smoking cessation.
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Affiliation(s)
- Shaofeng Mo
- Affiliated Hospital of Guilin Medical University, Guilin, Guangxi 541001, P.R.China
| | - Sihao Feng
- Affiliated Hospital of Guilin Medical University, Guilin, Guangxi 541001, P.R.China
| | - Hongbo Chen
- School of Life and Environmental Sciences, Guilin University of Electronic Technology, Guilin, Guangxi 541004,
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21
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Ortiz JJ, Portillo W, Paredes RG, Young LJ, Alcauter S. Resting state brain networks in the prairie vole. Sci Rep 2018; 8:1231. [PMID: 29352154 PMCID: PMC5775431 DOI: 10.1038/s41598-017-17610-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Accepted: 11/24/2017] [Indexed: 12/20/2022] Open
Abstract
Resting state functional magnetic resonance imaging (rsfMRI) has shown the hierarchical organization of the human brain into large-scale complex networks, referred as resting state networks. This technique has turned into a promising translational research tool after the finding of similar resting state networks in non-human primates, rodents and other animal models of great value for neuroscience. Here, we demonstrate and characterize the presence of resting states networks in Microtus ochrogaster, the prairie vole, an extraordinary animal model to study complex human-like social behavior, with potential implications for the research of normal social development, addiction and neuropsychiatric disorders. Independent component analysis of rsfMRI data from isoflurane-anestethized prairie voles resulted in cortical and subcortical networks, including primary motor and sensory networks, but also included putative salience and default mode networks. We further discuss how future research could help to close the gap between the properties of the large scale functional organization and the underlying neurobiology of several aspects of social cognition. These results contribute to the evidence of preserved resting state brain networks across species and provide the foundations to explore the use of rsfMRI in the prairie vole for basic and translational research.
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Affiliation(s)
- Juan J Ortiz
- Instituto de Neurobiología, Universidad Nacional Autónoma de México. Boulevard Juriquilla 3001, Queretaro, 76230, Mexico
| | - Wendy Portillo
- Instituto de Neurobiología, Universidad Nacional Autónoma de México. Boulevard Juriquilla 3001, Queretaro, 76230, Mexico
| | - Raul G Paredes
- Instituto de Neurobiología, Universidad Nacional Autónoma de México. Boulevard Juriquilla 3001, Queretaro, 76230, Mexico
| | - Larry J Young
- Department of Psychiatry and Behavioral Sciences, Silvio O. Conte Center for Oxytocin and Social Cognition, Center for Translational Social Neuroscience, Yerkes National Primate Research Center, Emory University, 954 Gatewood Rd., Atlanta, GA, 30322, USA
| | - Sarael Alcauter
- Instituto de Neurobiología, Universidad Nacional Autónoma de México. Boulevard Juriquilla 3001, Queretaro, 76230, Mexico.
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Stevenson TJ, Alward BA, Ebling FJP, Fernald RD, Kelly A, Ophir AG. The Value of Comparative Animal Research: Krogh's Principle Facilitates Scientific Discoveries. ACTA ACUST UNITED AC 2017; 5:118-125. [PMID: 32743064 DOI: 10.1177/2372732217745097] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Biomedical research is dominated by relatively few nonhuman animals to investigate healthy and disease conditions. Research has overrelied on these models due to their well-described genomes, the capability to control specific genes, and the high rate of reproduction. However, recent advances in large-scale molecular sequencing experiments have revealed, in some cases, the limited similarities in experimental outcomes observed in common rodents (i.e., mice) compared with humans. The value of more varied comparative animal models includes examples such as long-term body weight regulation in seasonally breeding hamsters as a means to help understand the obesity epidemic, vocal learning in songbirds to illuminate language acquisition and maintenance, and reproduction in cichlid fish to discover novel genes conserved in humans. Studying brain genes in prairie voles and cichlids advanced knowledge about social behavior. Taken together, experiments on diverse animal species highlight nontraditional systems for advancing our understanding of human health and well-being.
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Madularu D, Mathieu AP, Kumaragamage C, Reynolds LM, Near J, Flores C, Rajah MN. A non-invasive restraining system for awake mouse imaging. J Neurosci Methods 2017. [PMID: 28634149 DOI: 10.1016/j.jneumeth.2017.06.008] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND Preclinical neuroimaging allows for the assessment of brain anatomy, connectivity and function in laboratory animals, such as mice and rats. Most of these studies are performed under anesthesia to avoid movement during the scanning sessions. METHOD Due to the limitations associated with anesthetized imaging, recent efforts have been made to conduct rodent imaging studies in awake animals, habituated to the restraint systems used in these instances. As of now, only one such system is commercially available for mouse scanning (Animal Imaging Research, Boston, MA, USA) integrating the radiofrequency coil electronics with the restraining element, an approach which, although effective in reducing head motion during awake imaging, has some limitations. In the current report, we present a novel mouse restraining system that addresses some of these limitations. RESULTS/COMPARISON TO OTHER METHODS The effectiveness of the restraining system was evaluated in terms of three-dimensional linear head movement across two consecutive functional MRI scans (total 20min) in 33 awake mice. Head movement was minimal, recorded in roughly 12% of the time-series. Respiration rate during the acclimation procedure dropped while the bolus count remained unchanged. Body movement during functional acquisitions did not have a significant effect on magnetic field (B0) homogeneity. CONCLUSION/NOVELTY Compared to the commercially available system, the benefit of the current design is two-fold: 1) it is compatible with a range of commercially-available coils, and 2) it allows for the pairing of neuroimaging with other established techniques involving intracranial cannulation (i.e. microinfusion and optogenetics).
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Affiliation(s)
- Dan Madularu
- Department of Psychiatry, Faculty of Medicine, McGill University, Montreal, QC, Canada; Brain Imaging Centre, Douglas Mental Health University Institute, McGill University, Montreal, QC, Canada.
| | - Axel P Mathieu
- Brain Imaging Centre, Douglas Mental Health University Institute, McGill University, Montreal, QC, Canada
| | - Chathura Kumaragamage
- Brain Imaging Centre, Douglas Mental Health University Institute, McGill University, Montreal, QC, Canada; Department of Biomedical Engineering, McGill University, Montreal, QC, Canada
| | - Lauren M Reynolds
- Integrated Program in Neuroscience, McGill University, Montreal, QC, Canada
| | - Jamie Near
- Department of Psychiatry, Faculty of Medicine, McGill University, Montreal, QC, Canada; Department of Biomedical Engineering, McGill University, Montreal, QC, Canada
| | - Cecilia Flores
- Department of Psychiatry, Faculty of Medicine, McGill University, Montreal, QC, Canada
| | - M Natasha Rajah
- Department of Psychiatry, Faculty of Medicine, McGill University, Montreal, QC, Canada; Brain Imaging Centre, Douglas Mental Health University Institute, McGill University, Montreal, QC, Canada; Department of Psychology, Faculty of Arts, McGill University, Montreal, QC, Canada
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