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Effects of paternal deprivation in social rodents. RUSSIAN JOURNAL OF THERIOLOGY 2022. [DOI: 10.15298/rusjtheriol.21.2.03] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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2
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Leblanc É, Dégeilh F, Beauchamp MH, Bernier A. Disorganized attachment behaviors in infancy as predictors of brain morphology and peer rejection in late childhood. COGNITIVE, AFFECTIVE & BEHAVIORAL NEUROSCIENCE 2022; 22:833-848. [PMID: 35146642 DOI: 10.3758/s13415-022-00987-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 01/19/2022] [Indexed: 06/14/2023]
Abstract
Studies show robust links between disorganized attachment in infancy and socioemotional maladjustment in childhood. Little is known, however, about the links between disorganized attachment and brain development, and whether attachment-related differences in brain morphology translate into meaningful variations in child socioemotional functioning. This study examined the links between infants' disorganized attachment behaviors toward their mothers, whole-brain regional grey matter volume and thickness, and peer rejection in late childhood. Thirty-three children and their mothers took part in this study. The Strange Situation Procedure was used to assess mother-infant attachment when infants were 18 months old. Magnetic resonance imaging was performed when they were 10 years old to assess cortical thickness and grey matter volumes. Children and teachers reported on peer rejection 1 year later, as an indicator of socioemotional maladjustment. Results indicated that disorganized attachment was not associated with grey matter volumes. However, children who exhibited more disorganized attachment behaviors in infancy had significantly thicker cortices in bilateral middle and superior frontal gyri, and extending to the inferior frontal gyrus, as well as the orbitofrontal and insular cortices in the right hemisphere in late childhood. Moreover, children with thicker cortices in these regions experienced greater peer rejection, as rated by themselves and their teachers. Although preliminary, these results are the first to indicate that disorganized attachment may play a role in cortical thickness development and that changes in cortical thickness are associated with differences in child socioemotional functioning.
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Affiliation(s)
- Élizabel Leblanc
- Department of Psychology, University of Montreal, P.O. Box 6128, Downtown Station, Montreal, QC, H3C 3J7, Canada
| | - Fanny Dégeilh
- Department of Psychology, University of Montreal, P.O. Box 6128, Downtown Station, Montreal, QC, H3C 3J7, Canada
- Sainte-Justine Research Center, Montreal, QC, Canada
- University of Rennes, CNRS, Inria, Inserm, IRISA UMR 6074, Empenn Team ERL U 1228, Rennes, France
| | - Miriam H Beauchamp
- Department of Psychology, University of Montreal, P.O. Box 6128, Downtown Station, Montreal, QC, H3C 3J7, Canada
- Sainte-Justine Research Center, Montreal, QC, Canada
| | - Annie Bernier
- Department of Psychology, University of Montreal, P.O. Box 6128, Downtown Station, Montreal, QC, H3C 3J7, Canada.
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3
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Rogers FD, Freeman SM, Anderson M, Palumbo MC, Bales KL. Compositional variation in early-life parenting structures alters oxytocin and vasopressin 1a receptor development in prairie voles (Microtus ochrogaster). J Neuroendocrinol 2021; 33:e13001. [PMID: 34189787 PMCID: PMC8486352 DOI: 10.1111/jne.13001] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 05/31/2021] [Accepted: 05/31/2021] [Indexed: 12/27/2022]
Abstract
Paternal absence can significantly alter bio-behavioural development in many biparental species. This effect has generally been demonstrated by comparing the development of offspring reared under biparental care with those reared by a single mother. However, studies employing this design conflate two significant modifications to early-life experience: removal of father-specific qualities and the general reduction of offspring-directed care. In the socially monogamous prairie vole (Microtus ochrogaster), the experience of paternal absence without substitution during development inhibits partner preference formation in adulthood, a hallmark of social monogamy, in females and males. Employing alloparents as substitutes for fathers, our previous work demonstrated that paternal absence affects pair-bond formation in female offspring via reduced quantity of care, although it affects pair-bond formation in male offspring by means of a missing paternal quality (or qualities). Here, we present evidence that paternal absence (with and without alloparental substitution) may alter the ontogeny of neural oxytocin receptor (OXTR) and/or vasopressin 1a receptor (AVPR1a) distribution in male and female prairie voles. Compared to biparentally reared controls (BPC), male offspring reared in mother only (MON) and maternal-plus-alloparental (MPA) conditions show lower densities of OXTR in the central amygdala; and MPA males show lower densities of OXTR in the caudate putamen and nucleus accumbens. Early-life experience was not associated with differences in AVPR1a density in males. However, MON and MPA females show greater densities of AVPR1a in the medial amygdala than BPC; and MPA females show greater densities of AVPR1a in the ventromedial nucleus of the hypothalamus. We also demonstrate with corticosterone concentrations that MON and MPA offspring are not differentially susceptible to a stressor (ie, social isolation) than BPC offspring. These findings suggest that paternal absence, although likely not a salient early-life stressor, has neuroendocrine consequences for offspring, some of which may affect partner preference formation.
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Affiliation(s)
- Forrest D Rogers
- Psychology Graduate Program, University of California, Davis, CA, USA
- Department of Psychology, University of California, Davis, CA, USA
| | - Sara M Freeman
- Department of Psychology, University of California, Davis, CA, USA
- California National Primate Research Center, Davis, CA, USA
- Department of Biology, Utah State University, Logan, UT, USA
| | - Marina Anderson
- Department of Psychology, University of California, Davis, CA, USA
- California National Primate Research Center, Davis, CA, USA
| | - Michelle C Palumbo
- Department of Psychology, University of California, Davis, CA, USA
- California National Primate Research Center, Davis, CA, USA
- Department of Behavioral Neuroscience, Oregon Health & Science University, Portland, OR, USA
| | - Karen L Bales
- Department of Psychology, University of California, Davis, CA, USA
- California National Primate Research Center, Davis, CA, USA
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Kocahan S, Akillioglu K, Sencar L, Sahin L, Cevik OS, Taskin E, Guven C, Boga A, Polat S. Living with female rats exposed to restraint stress during pregnancy caused depressive‐like behavior in male rats and stress‐induced apoptosis. Int J Dev Neurosci 2021; 81:643-654. [DOI: 10.1002/jdn.10142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 06/09/2021] [Accepted: 07/02/2021] [Indexed: 11/11/2022] Open
Affiliation(s)
- Sayad Kocahan
- Department of Physiology, Faculty of Medicine University of Adiyaman Adiyaman Turkey
- International Scientific Center Baku State University Baku Azerbaijan
| | - Kubra Akillioglu
- Department of Physiology, Faculty of Medicine University of Cukurova Adana Turkey
| | - Leman Sencar
- Department of Histology, Faculty of Medicine University of Cukurova Adana Turkey
| | - Leyla Sahin
- Department of Physiology, Faculty of Medicine University of Mersin Mersin Turkey
| | - Ozge Selin Cevik
- Department of Physiology, Faculty of Medicine University of Mersin Mersin Turkey
| | - Eylem Taskin
- Department of Physiology, Faculty of Medicine University of Omer HalisDemir Nigde Turkey
| | - Celal Guven
- Department of Biophysics, Faculty of Medicine University of Omer HalisDemir Nigde Turkey
| | - Ayper Boga
- Department of Physiology, Faculty of Medicine University of Cukurova Adana Turkey
| | - Sait Polat
- Department of Histology, Faculty of Medicine University of Cukurova Adana Turkey
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Parental Education and Left Lateral Orbitofrontal Cortical Activity during N-Back Task: An fMRI Study of American Adolescents. Brain Sci 2021; 11:brainsci11030401. [PMID: 33809905 PMCID: PMC8004246 DOI: 10.3390/brainsci11030401] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2021] [Accepted: 03/19/2021] [Indexed: 12/03/2022] Open
Abstract
Introduction. The Orbitofrontal Cortex (OFC) is a cortical structure that has implications in cognition, memory, reward anticipation, outcome evaluation, decision making, and learning. As such, OFC activity correlates with these cognitive brain abilities. Despite research suggesting race and socioeconomic status (SES) indicators such as parental education may be associated with OFC activity, limited knowledge exists on multiplicative effects of race and parental education on OFC activity and associated cognitive ability. Purpose. Using functional brain imaging data from the Adolescent Brain Cognitive Development (ABCD) study, we tested the multiplicative effects of race and parental education on left lateral OFC activity during an N-Back task. In our study, we used a sociological rather than biological theory that conceptualizes race and SES as proxies of access to the opportunity structure and exposure to social adversities rather than innate and non-modifiable brain differences. We explored racial variation in the effect of parental educational attainment, a primary indicator of SES, on left lateral OFC activity during an N-Back task between Black and White 9–10 years old adolescents. Methods. The ABCD study is a national, landmark, multi-center brain imaging investigation of American adolescents. The total sample was 4290 9–10 years old Black or White adolescents. The independent variables were SES indicators, namely family income, parental education, and neighborhood income. The primary outcome was the average beta weight for N-Back (2 back versus 0 back contrast) in ASEG ROI left OFC activity, measured by functional Magnetic Resonance Imaging (fMRI) during an N-Back task. Ethnicity, age, sex, subjective SES, and family structure were the study covariates. For data analysis, we used linear regression models. Results. In White but not Black adolescents, parental education was associated with higher left lateral OFC activity during the N-Back task. In the pooled sample, we found a significant interaction between race and parental education on the outcome, suggesting that high parental education is associated with a larger increase in left OFC activity of White than Black adolescents. Conclusions. For American adolescents, race and SES jointly influence left lateral OFC activity correlated with cognition, memory, decision making, and learning. Given the central role of left lateral OFC activity in learning and memory, our finding calls for additional research on contextual factors that reduce the gain of SES for Black adolescents. Cognitive inequalities are not merely due to the additive effects of race and SES but also its multiplicative effects.
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Neural meaning making, prediction, and prefrontal-subcortical development following early adverse caregiving. Dev Psychopathol 2021; 32:1563-1578. [PMID: 33427163 DOI: 10.1017/s0954579420001169] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Early adversities that are caregiving-related (crEAs) are associated with a significantly increased risk for mental health problems. Recent neuroscientific advances have revealed alterations in medial prefrontal cortex (mPFC)-subcortical circuitry following crEAs. While this work has identified alterations in affective operations (e.g., perceiving, reacting, controlling, learning) associated with mPFC-subcortical circuitry, this circuitry has a much broader function extending beyond operations. It plays a primary role in affective meaning making, involving conceptual-level, schematized knowledge to generate predictions about the current environment. This function of mPFC-subcortical circuitry motivates asking whether mPFC-subcortical phenotypes following crEAs support semanticized knowledge content (or the concept-level knowledge) and generate predictive models. I present a hypothesis motivated by research findings across four different lines of work that converge on mPFC-subcortical neuroanatomy, including (a) the neurobiology supporting emotion regulation processes in adulthood, (b) the neurobiology that is activated by caregiving cues during development, (c) the neurobiology that is altered by crEAs, and (d) the neurobiology of semantic-based meaning making. I hypothesize that the affective behaviors following crEAs result in part from affective semantic memory processes supported by mPFC-subcortical circuitry that over the course of development, construct affective schemas that generate meaning making and guide predictions. I use this opportunity to review some of the literature on mPFC-subcortical circuit development following crEAs to illustrate the motivation behind this hypothesis. Long recognized by clinical science and cognitive neuroscience, studying schema-based processes may be particularly helpful for understanding how affective meaning making arises from developmental trajectories of mPFC-subcortical circuitry.
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7
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There are More than Two Sides to Antisocial Behavior: The Inextricable Link between Hemispheric Specialization and Environment. Symmetry (Basel) 2020. [DOI: 10.3390/sym12101671] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Human functions and traits are linked to cerebral networks serving different emotional and cognitive control systems, some of which rely on hemispheric specialization and integration to promote adaptive goal-directed behavior. Among the neural systems discussed in this context are those underlying pro- and antisocial behaviors. The diverse functions and traits governing our social behavior have been associated with lateralized neural activity. However, as with other complex behaviors, specific hemispheric roles are difficult to elucidate. This is due largely to environmental and contextual influences, which interact with neural substrates in the development and expression of pro and antisocial functions. This paper will discuss the reciprocal ties between environmental factors and hemispheric functioning in the context of social behavior. Rather than an exhaustive review, the paper will attempt to familiarize readers with the prominent literature and primary questions to encourage further research and in-depth discussion in this field.
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de Schultz T, Bock J, Braun K. Paternal Deprivation and Female Biparental Family Rearing Induce Dendritic and Synaptic Changes in Octodon degus: I. Medial Prefrontal Cortex. Front Synaptic Neurosci 2020; 12:38. [PMID: 33013347 PMCID: PMC7498658 DOI: 10.3389/fnsyn.2020.00038] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Accepted: 07/31/2020] [Indexed: 12/31/2022] Open
Abstract
In most mammalian species parent-offspring interactions during early life periods primarily comprise social contacts with the mother, whereas the role of males in parental care is one of the most overlooked and understudied topics. The present study addressed the hypothesis that the complete deprivation of paternal care delays or permanently retards synaptic connectivity in the brain, particularly in the medial prefrontal cortex (mPFC) of the offspring in a sex-specific manner. Another aim of this study was to address the question whether and in which way replacing the father with a female caregiver (in our experiments the “aunt”) can “buffer” the detrimental effects of paternal deprivation on neuronal development. The comparison of: (a) single mother rearing; (b) biparental rearing by father and mother; and (c) biparental rearing by two female caregivers revealed that: (i) paternal care represents a critical environmental factor for synaptic and dendritic development of pyramidal neurons in the vmPFC of their offspring; (ii) a second female caregiver (“aunt”) does not “buffer” the neuronal consequences of paternal deprivation; and that (iii) neuronal development in the vmPFC is differentially affected in male and female offspring in response to different family constellations.
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Affiliation(s)
- Tony de Schultz
- Department of Zoology, Developmental Neurobiology, Institute of Biology, Otto von Guericke University Magdeburg, Magdeburg, Germany
| | - Joerg Bock
- PG "Epigenetics and Structural Plasticity," Institute of Biology, Otto von Guericke, University Magdeburg, Magdeburg, Germany.,Center for Behavioral Brain Sciences, Magdeburg, Germany
| | - Katharina Braun
- Department of Zoology, Developmental Neurobiology, Institute of Biology, Otto von Guericke University Magdeburg, Magdeburg, Germany.,Center for Behavioral Brain Sciences, Magdeburg, Germany
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9
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Abstract
In recent decades, human sociocultural changes have increased the numbers of fathers that are involved in direct caregiving in Western societies. This trend has led to a resurgence of interest in understanding the mechanisms and effects of paternal care. Across the animal kingdom, paternal caregiving has been found to be a highly malleable phenomenon, presenting with great variability among and within species. The emergence of paternal behaviour in a male animal has been shown to be accompanied by substantial neural plasticity and to be shaped by previous and current caregiving experiences, maternal and infant stimuli and ecological conditions. Recent research has allowed us to gain a better understanding of the neural basis of mammalian paternal care, the genomic and circuit-level mechanisms underlying paternal behaviour and the ways in which the subcortical structures that support maternal caregiving have evolved into a global network of parental care. In addition, the behavioural, neural and molecular consequences of paternal caregiving for offspring are becoming increasingly apparent. Future cross-species research on the effects of absence of the father and the transmission of paternal influences across generations may allow research on the neuroscience of fatherhood to impact society at large in a number of important ways.
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10
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Rogers FD, Bales KL. Revisiting paternal absence: Female alloparental replacement of fathers recovers partner preference formation in female, but not male
prairie voles
(
Microtus ochrogaster
). Dev Psychobiol 2019; 62:573-590. [DOI: 10.1002/dev.21943] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 10/16/2019] [Accepted: 11/14/2019] [Indexed: 12/23/2022]
Affiliation(s)
- Forrest Dylan Rogers
- Psychology Graduate Program University of California Davis CA USA
- Department of Psychology University of California Davis CA USA
| | - Karen Lisa Bales
- Department of Psychology University of California Davis CA USA
- California National Primate Research Center Davis CA USA
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11
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Sadeghi S, Pouretemad HR, Khosrowabadi R, Fathabadi J, Nikbakht S. Effects of parent-child interaction training on children who are excessively exposed to digital devices: A pilot study. Int J Psychiatry Med 2019; 54:408-423. [PMID: 31033367 DOI: 10.1177/0091217419837070] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
ObjectiveIn the last decade, the use of digital devices among children has increased. This study examines the effects of parent–child interaction training on the amount of time children use digital devices, conflict and closeness in parent–child relationships, executive functions, and the electroencephalogram absolute power in children who excessively use the digital devices.MethodThe sample group consisted of 12 children (24 to 47 months) who spent more than half of their waking hours using digital devices. Parents were trained to intensive interaction with the child for two months. Electroencephalogram absolute power, parent–child interaction, the amount of time children use digital devices, and children’s executive function skills were assessed.ResultsParent–child intensive interaction reduces the use of digital devices; decrease the conflicts and increase the closeness in parent–child relationships; decrease executive functioning problems; and increase the absolute power of alpha and alpha 2 (F3), beta 1 (F3), and beta and beta 2 (F3, Fp2).ConclusionThese findings provide evidence of the negative effects of the excessive use of digital devices in children, the importance of parent–child interaction, and its positive impacts on cognitive and brain functions in children. It might contribute to better understand the importance of parent–child interaction in the early years.
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Affiliation(s)
- Saeid Sadeghi
- Department of Clinical and Health Psychology, Shahid Beheshti University, Tehran, Iran
| | - Hamid Reza Pouretemad
- Department of Clinical and Health Psychology, Shahid Beheshti University, Tehran, Iran.,Institute for Cognitive and Brain Sciences, Shahid Beheshti University, Tehran, Iran
| | - Reza Khosrowabadi
- Institute for Cognitive and Brain Sciences, Shahid Beheshti University, Tehran, Iran
| | - Jalil Fathabadi
- Department of Educational and Developmental Psychology, Shahid Beheshti University, Tehran, Iran
| | - Sedighe Nikbakht
- Department of Pediatric Neurology, Tehran University of Medical Sciences, Tehran, Iran
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12
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Brenhouse HC, Bath KG. Bundling the haystack to find the needle: Challenges and opportunities in modeling risk and resilience following early life stress. Front Neuroendocrinol 2019; 54:100768. [PMID: 31175880 PMCID: PMC6708473 DOI: 10.1016/j.yfrne.2019.100768] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Revised: 05/21/2019] [Accepted: 06/04/2019] [Indexed: 12/16/2022]
Abstract
Various forms of early life adversity (ELA) have been linked with increased risk for negative health outcomes, including neuropsychiatric disorders. Understanding how the complex interplay between types, timing, duration, and severity of ELA, together with individual differences in genetic, socio-cultural, and physiological differences can mediate risk and resilience has proven difficult in population based studies. Use of animal models provides a powerful toolset to isolate key variables underlying risk for altered neural and behavioral maturational trajectories. However, a lack of clarity regarding the unique features of differing forms of adversity, lab differences in the implementation and reporting of methods, and the ability compare across labs and types of ELA has led to some confusion. Here, we highlight the diversity of approaches available, current challenges, and a possible ways forward to increase clarity and drive more meaningful and fruitful implementation and comparison of these approaches.
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Affiliation(s)
- Heather C Brenhouse
- Psychology Department, Northeastern University, 125 Nightingale Hall, Boston, MA 02115, United States.
| | - Kevin G Bath
- Department of Cognitive, Linguistic, and Psychological Sciences, Brown University, 190 Thayer St. Box 1821, Providence, RI 02912, United States
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Bauer CM, Correa LA, Ebensperger LA, Romero LM. Stress, sleep, and sex: A review of endocrinological research in Octodon degus. Gen Comp Endocrinol 2019; 273:11-19. [PMID: 29545088 DOI: 10.1016/j.ygcen.2018.03.014] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/24/2017] [Revised: 02/20/2018] [Accepted: 03/11/2018] [Indexed: 10/17/2022]
Abstract
The Common Degu (Octodon degus) is a small rodent endemic to central Chile. It has become an important model for comparative vertebrate endocrinology because of several uncommon life-history features - it is diurnal, shows a high degree of sociality, practices plural breeding with multiple females sharing natal burrows, practices communal parental care, and can easily be studied in the laboratory and the field. Many studies have exploited these features to make contributions to comparative endocrinology. This review summarizes contributions in four major areas. First are studies on degu stress responses, focusing on seasonal changes in glucocorticoid (GC) release, impacts of parental care on offspring GC responses, and fitness consequences of individual variations of GC responses. These studies have helped confirm the ecological relevance of stress responses. Second are studies exploring diurnal circadian rhythms of melatonin and sex steroids. These studies have formed important work translating circadian biology from nocturnal laboratory rodents to diurnal humans. Third are studies that exploit the open nature of degu natural habitat, combined with laboratory studies, to explore the impact of testosterone on agonistic behavior. Studies have focused primarily on male:male, female:female, male:female, and parental behaviors. Fourth, are contributions to the study of female masculinization from male siblings in the uterus. These studies have focused on both the behavioral consequences of masculinization and the impact of those behaviors on fitness. Taken together, the studies reviewed here have formed a strong foundation for further studies in the degu so that future studies can address how endocrinological components underlie new mechanistic connections to the ecological effects on behavior and fitness.
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Affiliation(s)
- Carolyn M Bauer
- Biology Department, Adelphi University, Garden City, NY, USA.
| | - Loreto A Correa
- Escuela de Medicina Veterinaria, Facultad de Ciencias, Universidad Mayor, Santiago, Chile; Departamento de Ecología, Facultad de Ciencias Biológicas, P. Universidad Católica de Chile, Santiago, Chile
| | - Luis A Ebensperger
- Departamento de Ecología, Facultad de Ciencias Biológicas, P. Universidad Católica de Chile, Santiago, Chile
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14
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WANG B, LI L, HE Z, WANG L, ZHANG S, QIAO H, JIA R, TAI F. Effects of reproductive experience on paternal behavior, levels of testosterone, prolactin in serum and dendritic spines in medial prefrontal cortex of mandarin voles. Integr Zool 2018; 13:711-722. [DOI: 10.1111/1749-4877.12354] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Bo WANG
- Institute of Brain and Behavioral Sciences, College of Life Sciences; Shaanxi Normal University; Xi'an Shaanxi China
- Genetic Engineering Laboratory, College of Biological and Environmental engineering; Xi'an University; Xi'an Shaanxi China
| | - Laifu LI
- Institute of Brain and Behavioral Sciences, College of Life Sciences; Shaanxi Normal University; Xi'an Shaanxi China
| | - Zhixiong HE
- Institute of Brain and Behavioral Sciences, College of Life Sciences; Shaanxi Normal University; Xi'an Shaanxi China
| | - Limin WANG
- Institute of Brain and Behavioral Sciences, College of Life Sciences; Shaanxi Normal University; Xi'an Shaanxi China
| | - Siyi ZHANG
- Institute of Brain and Behavioral Sciences, College of Life Sciences; Shaanxi Normal University; Xi'an Shaanxi China
| | - Hui QIAO
- Institute of Brain and Behavioral Sciences, College of Life Sciences; Shaanxi Normal University; Xi'an Shaanxi China
| | - Rui JIA
- Institute of Brain and Behavioral Sciences, College of Life Sciences; Shaanxi Normal University; Xi'an Shaanxi China
| | - Fadao TAI
- Institute of Brain and Behavioral Sciences, College of Life Sciences; Shaanxi Normal University; Xi'an Shaanxi China
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15
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Rymer TL, Pillay N. An integrated understanding of paternal care in mammals: lessons from the rodents. J Zool (1987) 2018. [DOI: 10.1111/jzo.12575] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- T. L. Rymer
- School of Animal, Plant and Environmental Sciences; University of the Witwatersrand; Johannesburg South Africa
- College of Science and Engineering; James Cook University; Cairns QLD Australia
- Centre for Tropical Environmental and Sustainability Sciences; James Cook University; Cairns QLD Australia
| | - N. Pillay
- School of Animal, Plant and Environmental Sciences; University of the Witwatersrand; Johannesburg South Africa
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Glasper ER, Hyer MM, Hunter TJ. Enduring Effects of Paternal Deprivation in California Mice ( Peromyscus californicus): Behavioral Dysfunction and Sex-Dependent Alterations in Hippocampal New Cell Survival. Front Behav Neurosci 2018; 12:20. [PMID: 29487509 PMCID: PMC5816956 DOI: 10.3389/fnbeh.2018.00020] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Accepted: 01/23/2018] [Indexed: 12/28/2022] Open
Abstract
Early-life experiences with caregivers can significantly affect offspring development in human and non-human animals. While much of our knowledge of parent-offspring relationships stem from mother-offspring interactions, increasing evidence suggests interactions with the father are equally as important and can prevent social, behavioral, and neurological impairments that may appear early in life and have enduring consequences in adulthood. In the present study, we utilized the monogamous and biparental California mouse (Peromyscus californicus). California mouse fathers provide extensive offspring care and are essential for offspring survival. Non-sibling virgin male and female mice were randomly assigned to one of two experimental groups following the birth of their first litter: (1) biparental care: mate pairs remained with their offspring until weaning; or (2) paternal deprivation (PD): paternal males were permanently removed from their home cage on postnatal day (PND) 1. We assessed neonatal mortality rates, body weight, survival of adult born cells in the dentate gyrus of the hippocampus, and anxiety-like and passive stress-coping behaviors in male and female young adult offspring. While all biparentally-reared mice survived to weaning, PD resulted in a ~35% reduction in survival of offspring. Despite this reduction in survival to weaning, biparentally-reared and PD mice did not differ in body weight at weaning or into young adulthood. A sex-dependent effect of PD was observed on new cell survival in the dentate gyrus of the hippocampus, such that PD reduced cell survival in female, but not male, mice. While PD did not alter classic measures of anxiety-like behavior during the elevated plus maze task, exploratory behavior was reduced in PD mice. This observation was irrespective of sex. Additionally, PD increased some passive stress-coping behaviors (i.e., percent time spent immobile) during the forced swim task—an effect that was also not sex-dependent. Together, these findings demonstrate that, in a species where paternal care is not only important for offspring survival, PD can also contribute to altered structural and functional neuroplasticity of the hippocampus. The mechanisms contributing to the observed sex-dependent alterations in new cell survival in the dentate gyrus should be further investigated.
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Affiliation(s)
- Erica R Glasper
- Department of Psychology, University of Maryland, College Park, College Park, MD, United States.,Program in Neuroscience and Cognitive Science, University of Maryland, College Park, College Park, MD, United States
| | - Molly M Hyer
- Program in Neuroscience and Cognitive Science, University of Maryland, College Park, College Park, MD, United States
| | - Terrence J Hunter
- Department of Psychology, University of Maryland, College Park, College Park, MD, United States
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Transgenerational transmission of pregestational and prenatal experience: maternal adversity, enrichment, and underlying epigenetic and environmental mechanisms. J Dev Orig Health Dis 2016; 7:588-601. [PMID: 27488022 DOI: 10.1017/s2040174416000416] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Transgenerational transmission refers to positive and negative adaptations in brain function and behavior that affect following generations. In this paper, empirical findings regarding the transgenerational transmission of maternal adversity during three critical periods - childhood, pregestational adulthood and pregnancy - will be reviewed in terms of pregnancy outcomes, maternal care, offspring behavior and development, and physiological functioning. Research on the transgenerational transmission of enrichment and the implications for interventions to ameliorate the consequences of adversity will also be presented. In the final section, underlying epigenetic and environmental mechanisms that have been proposed to explain how experience is transferred across generations through transgenerational transmission will be reviewed. Directions for future research are suggested throughout.
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18
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Gettler LT. Becoming DADS: Considering the Role of Cultural Context and Developmental Plasticity for Paternal Socioendocrinology. CURRENT ANTHROPOLOGY 2016. [DOI: 10.1086/686149] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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19
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Bauer CM, Ebensperger LA, León C, Ramírez-Estrada J, Hayes LD, Romero LM. Postnatal Development of the Degu (Octodon degus) Endocrine Stress Response Is Affected by Maternal Care. ACTA ACUST UNITED AC 2016; 325:304-17. [DOI: 10.1002/jez.2018] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2016] [Revised: 03/30/2016] [Accepted: 04/15/2016] [Indexed: 01/15/2023]
Affiliation(s)
| | - Luis A. Ebensperger
- Departamento de Ecología, Facultad de Ciencias Biológicas; Pontificia Universidad Católica de Chile; Santiago Chile
| | - Cecilia León
- Departamento de Ecología, Facultad de Ciencias Biológicas; Pontificia Universidad Católica de Chile; Santiago Chile
| | - Juan Ramírez-Estrada
- Departamento de Ecología, Facultad de Ciencias Biológicas; Pontificia Universidad Católica de Chile; Santiago Chile
| | - Loren D. Hayes
- Department of Biological and Environmental Sciences; University of Tennessee at Chattanooga; Chattanooga Tennessee
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20
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Bales KL, Saltzman W. Fathering in rodents: Neurobiological substrates and consequences for offspring. Horm Behav 2016; 77:249-59. [PMID: 26122293 PMCID: PMC4691427 DOI: 10.1016/j.yhbeh.2015.05.021] [Citation(s) in RCA: 100] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2015] [Revised: 05/27/2015] [Accepted: 05/28/2015] [Indexed: 01/08/2023]
Abstract
This article is part of a Special Issue "Parental Care". Paternal care, though rare among mammals, is routinely displayed by several species of rodents. Here we review the neuroanatomical and hormonal bases of paternal behavior, as well as the behavioral and neuroendocrine consequences of paternal behavior for offspring. Fathering behavior is subserved by many of the same neural substrates which are also involved in maternal behavior (for example, the medial preoptic area of the hypothalamus). While gonadal hormones such as testosterone, estrogen, and progesterone, as well as hypothalamic neuropeptides such as oxytocin and vasopressin, and the pituitary hormone prolactin, are implicated in the activation of paternal behavior, there are significant gaps in our knowledge of their actions, as well as pronounced differences between species. Removal of the father in biparental species has long-lasting effects on behavior, as well as on these same neuroendocrine systems, in offspring. Finally, individual differences in paternal behavior can have similarly long-lasting, if more subtle, effects on offspring behavior. Future studies should examine similar outcome measures in multiple species, including both biparental species and closely related uniparental species. Careful phylogenetic analyses of the neuroendocrine systems presumably important to male parenting, as well as their patterns of gene expression, will also be important in establishing the next generation of hypotheses regarding the regulation of male parenting behavior.
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Affiliation(s)
- Karen L Bales
- Department of Psychology, University of California, Davis, USA; California National Primate Research Center, USA.
| | - Wendy Saltzman
- Department of Biology, University of California, Riverside, USA
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21
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Tost H, Champagne FA, Meyer-Lindenberg A. Environmental influence in the brain, human welfare and mental health. Nat Neurosci 2015; 18:1421-31. [PMID: 26404717 DOI: 10.1038/nn.4108] [Citation(s) in RCA: 176] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2015] [Accepted: 08/14/2015] [Indexed: 12/12/2022]
Abstract
The developing human brain is shaped by environmental exposures--for better or worse. Many exposures relevant to mental health are genuinely social in nature or believed to have social subcomponents, even those related to more complex societal or area-level influences. The nature of how these social experiences are embedded into the environment may be crucial. Here we review select neuroscience evidence on the neural correlates of adverse and protective social exposures in their environmental context, focusing on human neuroimaging data and supporting cellular and molecular studies in laboratory animals. We also propose the inclusion of innovative methods in social neuroscience research that may provide new and ecologically more valid insight into the social-environmental risk architecture of the human brain.
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Affiliation(s)
- Heike Tost
- Department of Psychiatry and Psychotherapy, Central Institute of Mental Health, University of Heidelberg, Medical Faculty Mannheim, Mannheim, Germany
| | | | - Andreas Meyer-Lindenberg
- Department of Psychiatry and Psychotherapy, Central Institute of Mental Health, University of Heidelberg, Medical Faculty Mannheim, Mannheim, Germany
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22
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Coen CW, Kalamatianos T, Oosthuizen MK, Poorun R, Faulkes CG, Bennett NC. Sociality and the telencephalic distribution of corticotrophin-releasing factor, urocortin 3, and binding sites for CRF type 1 and type 2 receptors: A comparative study of eusocial naked mole-rats and solitary Cape mole-rats. J Comp Neurol 2015; 523:2344-71. [PMID: 25921928 DOI: 10.1002/cne.23796] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Revised: 04/02/2015] [Accepted: 04/14/2015] [Indexed: 02/06/2023]
Abstract
Various aspects of social behavior are influenced by the highly conserved corticotrophin-releasing factor (CRF) family of peptides and receptors in the mammalian telencephalon. This study has mapped and compared the telencephalic distribution of the CRF receptors, CRF1 and CRF2 , and two of their ligands, CRF and urocortin 3, respectively, in African mole-rat species with diametrically opposed social behavior. Naked mole-rats live in large eusocial colonies that are characterized by exceptional levels of social cohesion, tolerance, and cooperation in burrowing, foraging, defense, and alloparental care for the offspring of the single reproductive female. Cape mole-rats are solitary; they tolerate conspecifics only fleetingly during the breeding season. The telencephalic sites at which the level of CRF1 binding in naked mole-rats exceeds that in Cape mole-rats include the basolateral amygdaloid nucleus, hippocampal CA3 subfield, and dentate gyrus; in contrast, the level is greater in Cape mole-rats in the shell of the nucleus accumbens and medial habenular nucleus. For CRF2 binding, the sites with a greater level in naked mole-rats include the basolateral amygdaloid nucleus and dentate gyrus, but the septohippocampal nucleus, lateral septal nuclei, amygdalostriatal transition area, bed nucleus of the stria terminalis, and medial habenular nucleus display a greater level in Cape mole-rats. The results are discussed with reference to neuroanatomical and behavioral studies of various species, including monogamous and promiscuous voles. By analogy with findings in those species, we speculate that the abundance of CRF1 binding in the nucleus accumbens of Cape mole-rats reflects their lack of affiliative behavior.
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Affiliation(s)
- Clive W Coen
- Reproductive Neurobiology, Division of Women's Health, School of Medicine, King's College London, London SE1 1UL, United Kingdom
| | - Theodosis Kalamatianos
- Reproductive Neurobiology, Division of Women's Health, School of Medicine, King's College London, London SE1 1UL, United Kingdom
| | - Maria K Oosthuizen
- Reproductive Neurobiology, Division of Women's Health, School of Medicine, King's College London, London SE1 1UL, United Kingdom.,Department of Zoology and Entomology, University of Pretoria, Pretoria, 0002, South Africa
| | - Ravi Poorun
- Reproductive Neurobiology, Division of Women's Health, School of Medicine, King's College London, London SE1 1UL, United Kingdom
| | - Christopher G Faulkes
- School of Biological and Chemical Sciences, Queen Mary, University of London, London E1 4NS, United Kingdom
| | - Nigel C Bennett
- Department of Zoology and Entomology, University of Pretoria, Pretoria, 0002, South Africa
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23
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Early-life experience, epigenetics, and the developing brain. Neuropsychopharmacology 2015; 40:141-53. [PMID: 24917200 PMCID: PMC4262891 DOI: 10.1038/npp.2014.140] [Citation(s) in RCA: 180] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Revised: 06/03/2014] [Accepted: 06/05/2014] [Indexed: 02/07/2023]
Abstract
Development is a dynamic process that involves interplay between genes and the environment. In mammals, the quality of the postnatal environment is shaped by parent-offspring interactions that promote growth and survival and can lead to divergent developmental trajectories with implications for later-life neurobiological and behavioral characteristics. Emerging evidence suggests that epigenetic factors (ie, DNA methylation, posttranslational histone modifications, and small non-coding RNAs) may have a critical role in these parental care effects. Although this evidence is drawn primarily from rodent studies, there is increasing support for these effects in humans. Through these molecular mechanisms, variation in risk of psychopathology may emerge, particularly as a consequence of early-life neglect and abuse. Here we will highlight evidence of dynamic epigenetic changes in the developing brain in response to variation in the quality of postnatal parent-offspring interactions. The recruitment of epigenetic pathways for the biological embedding of early-life experience may also have transgenerational consequences and we will describe and contrast two routes through which this transmission can occur: experience dependent vs germline inheritance. Finally, we will speculate regarding the future directions of epigenetic research and how it can help us gain a better understanding of the developmental origins of psychiatric dysfunction.
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24
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Abstract
The term “conduct problems” refers to a pattern of repetitive rule-breaking behavior, aggression, and disregard for others. Such problems have received increased attention recently, owing to violent events perpetrated by youth and modifications in the Diagnostic and Statistical Manual of Mental Disorders (DSM) criteria for conduct disorder, a syndrome involving recurrent conduct problems in children and adolescents. Youth conduct problems are predictive of an increased risk of substance abuse, criminal behavior, and educational disruption; they also incur a considerable societal burden from interpersonal suffering and financial costs. This review summarizes current data on youth conduct problems and highlights promising avenues for research. Prior reviews have summarized either the clinical literature on outcome, treatment, and familial aggregation or the neurocognitive literature on mechanisms and pathophysiology.– The current review differs by more tightly integrating clinical and neurocognitive perspectives.
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Affiliation(s)
- R James R Blair
- From the National Institute of Mental Health Intramural Research Program, National Institutes of Health, Bethesda, MD
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25
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Blair RJR. Psychopathic traits from an RDoC perspective. Curr Opin Neurobiol 2014; 30:79-84. [PMID: 25464372 DOI: 10.1016/j.conb.2014.09.011] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2014] [Revised: 09/26/2014] [Accepted: 09/29/2014] [Indexed: 12/19/2022]
Abstract
In this review an RDoC approach is applied to psychopathic traits. Two core neuro-cognitive systems relevant to the emergence of psychopathic traits are considered. These are the response to other individuals' emotional displays and reinforcement-based decision-making.
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Affiliation(s)
- R J R Blair
- Section of Affective Cognitive Neuroscience, National Institute of Mental Health, National Institutes of Health, Department of Health and Human Services, Bethesda, MD, USA.
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26
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Kolb B, Mychasiuk R, Gibb R. Brain development, experience, and behavior. Pediatr Blood Cancer 2014; 61:1720-3. [PMID: 24376085 DOI: 10.1002/pbc.24908] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2013] [Accepted: 11/25/2013] [Indexed: 12/14/2022]
Abstract
Brain development progresses through a series of stages beginning with neurogenesis and progressing to neural migration, maturation, synaptogenesis, pruning, and myelin formation. This review examines the literature on how early experiences alter brain development, including environmental events such as sensory stimuli, early stress, psychoactive drugs, parent-child relationships, peer relationships, intestinal flora, diet, and radiation. This sensitivity of the brain to early experiences has important implications for understanding neurodevelopmental disorders as well as the effect of medical interventions in children.
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Affiliation(s)
- Bryan Kolb
- Canadian Centre for Behavioural Neuroscience, University of Lethbridge, Lethbridge, Canada
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27
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Braun K, Champagne FA. Paternal influences on offspring development: behavioural and epigenetic pathways. J Neuroendocrinol 2014; 26:697-706. [PMID: 25039356 DOI: 10.1111/jne.12174] [Citation(s) in RCA: 94] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2014] [Revised: 07/08/2014] [Accepted: 07/09/2014] [Indexed: 12/25/2022]
Abstract
Although mammalian parent-offspring interactions during early life are primarily through the mother, there is increasing evidence for the impact of fathers on offspring development. A critical issue concerns the pathways through which this paternal influence is achieved. In the present review, we highlight the literature suggesting several of these routes of paternal effects in mammals. First, similar to mothers, fathers can influence offspring development through the direct care of offspring, as has been observed in biparental species. Second, there is growing evidence that, even in the absence of contact with offspring, fathers can transmit environmentally-induced effects (i.e. behavioural, neurobiological and metabolic phenotypes induced by stress, nutrition and toxins) to offspring and it has been speculated that these effects are achieved through inherited epigenetic variation within the patriline. Third, fathers may also impact the quality of mother-infant interactions and thus achieve an indirect influence on offspring. Importantly, these pathways of paternal influence are not mutually exclusive but rather serve as an illustration of the complex mechanisms through which parental influence is achieved. These influences may serve to transmit traits across generations, thus leading to a transgenerational transmission of neurobiological and behavioural phenotypes.
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Affiliation(s)
- K Braun
- Department of Zoology/Developmental Neurobiology, Institute of Biology, Otto von Guericke University, Magdeburg, Germany
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28
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Lutz PE, Turecki G. DNA methylation and childhood maltreatment: from animal models to human studies. Neuroscience 2014; 264:142-56. [PMID: 23933308 PMCID: PMC5293537 DOI: 10.1016/j.neuroscience.2013.07.069] [Citation(s) in RCA: 91] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2013] [Revised: 07/27/2013] [Accepted: 07/29/2013] [Indexed: 11/21/2022]
Abstract
Childhood maltreatment (CM) has estimated prevalence among Western societies between 10% and 15%. As CM associates with increased risk of several psychiatric disorders, early age of illness onset, increased comorbidity and negative clinical outcome, it imposes a major public health, social and economic impact. Although the clinical consequences of CM are well characterized, a major challenge remains to understand how negative early-life events can affect brain function over extended periods of time. We review here both animal and human studies indicating that the epigenetic mechanism of DNA methylation is a crucial mediator of early-life experiences, thereby maintaining life-long neurobiological sequelae of CM, and strongly determining psychopathological risk.
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Affiliation(s)
- P-E Lutz
- McGill Group for Suicide Studies, Douglas Mental Health University Institute, Montréal, Québec, Canada
| | - G Turecki
- McGill Group for Suicide Studies, Douglas Mental Health University Institute, Montréal, Québec, Canada.
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29
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Wu R, Song Z, Wang S, Shui L, Tai F, Qiao X, He F. Early paternal deprivation alters levels of hippocampal brain-derived neurotrophic factor and glucocorticoid receptor and serum corticosterone and adrenocorticotropin in a sex-specific way in socially monogamous mandarin voles. Neuroendocrinology 2014; 100:119-28. [PMID: 25116057 DOI: 10.1159/000366441] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Accepted: 07/31/2014] [Indexed: 11/19/2022]
Abstract
In monogamous mammals, fathers play an important role in the development of the brain and typical behavior in offspring, but the exact nature of this process is not well understood. In particular, little research has addressed whether the presence or absence of paternal care alters levels of hippocampal glucocorticoid receptor (GR) and brain-derived neurotrophic factor (BDNF), and basal levels of serum corticosterone (CORT) and adrenocorticotropin (ACTH). Here, we explored this concept using socially monogamous mandarin voles (Microtus mandarinus), a species in which fathers display high levels of paternal care toward their pups. Our immunohistochemical study shows that paternal deprivation (PD) significantly decreased levels of GR and BDNF protein in the CA1 and CA2/3 of the hippocampus. In the dental gyrus, decreases in GR and BDNF induced by PD were evident in females but not in males. Additionally, enzyme-linked immunosorbent assay results show that PD significantly upregulated levels of serum CORT and ACTH in females, but not males. These findings demonstrate that PD alters HPA axis activity in a sex-specific way. The changes in stress hormones documented here may be associated with alteration in hippocampal BDNF and GR levels.
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Affiliation(s)
- Ruiyong Wu
- Institute of Brain and Behavioral Sciences, College of Life Sciences, Shaanxi Normal University, Xi'an, China
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30
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Abstract
Conduct disorder is a childhood behaviour disorder that is characterized by persistent aggressive or antisocial behaviour that disrupts the child's environment and impairs his or her functioning. A proportion of children with conduct disorder have psychopathic traits. Psychopathic traits consist of a callous-unemotional component and an impulsive-antisocial component, which are associated with two core impairments. The first is a reduced empathic response to the distress of other individuals, which primarily reflects reduced amygdala responsiveness to distress cues; the second is deficits in decision making and in reinforcement learning, which reflects dysfunction in the ventromedial prefrontal cortex and striatum. Genetic and prenatal factors contribute to the abnormal development of these neural systems, and social-environmental variables that affect motivation influence the probability that antisocial behaviour will be subsequently displayed.
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31
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Kumazawa-Manita N, Katayama M, Hashikawa T, Iriki A. Three-dimensional reconstruction of brain structures of the rodent Octodon degus: a brain atlas constructed by combining histological and magnetic resonance images. Exp Brain Res 2013; 231:65-74. [PMID: 23995563 PMCID: PMC3824219 DOI: 10.1007/s00221-013-3667-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2013] [Accepted: 07/30/2013] [Indexed: 12/18/2022]
Abstract
Degus (Octodon degus) are rodents that are becoming more widely used in the neuroscience field. Degus display several more complex behaviors than rats and mice, including complicated social behaviors, vocal communications, and tool usage with superb manual dexterity. However, relatively little information is known about the anatomy of degu brains. Therefore, for these complex behaviors to be correlated with specific brain regions, a contemporary atlas of the degu brain is required. This manuscript describes the construction of a three-dimensional (3D) volume rendered model of the degu brain that combines histological and magnetic resonance images. This atlas provides several advantages, including the ability to visualize the surface of the brain from any angle. The atlas also permits virtual cutting of brain sections in any plane and provides stereotaxic coordinates for all sections, to be beneficial for both experimental surgeries and radiological studies. The reconstructed 3D atlas is freely available online at: http://brainatlas.brain.riken.jp/degu/modules/xoonips/listitem.php?index_id=24 .
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Affiliation(s)
- Noriko Kumazawa-Manita
- Laboratory for Symbolic Cognitive Development, RIKEN, Brain Science Institute, Wako, Saitama, 351-0198, Japan,
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32
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Gos T, Schulkin J, Gos A, Bock J, Poeggel G, Braun K. Paternal deprivation affects the functional maturation of corticotropin-releasing hormone (CRH)- and calbindin-D28k-expressing neurons in the bed nucleus of the stria terminalis (BNST) of the biparental Octodon degus. Brain Struct Funct 2013; 219:1983-90. [PMID: 23913254 PMCID: PMC4223576 DOI: 10.1007/s00429-013-0617-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2013] [Accepted: 07/23/2013] [Indexed: 01/06/2023]
Abstract
While the critical role of maternal care on the development of brain and behavior of the offspring has been extensively studied, our knowledge about the importance of paternal care for brain development of his offspring is still comparatively scarce. The aim of this study in the biparental caviomorph rodent Octodon degus was to analyze the impact of paternal care on the development of corticotropin-releasing hormone (CRH)-expressing neurons in the bed nucleus of the stria terminalis (BNST) and hypothalamic paraventricular nucleus (PVN). Both brain areas are key players in neuronal circuits that regulate hypothalamic–pituitary–adrenal axis (HPA) activity. At the age of postnatal day (PND) 21, we found that paternal deprivation resulted in a decreased density of CRH-containing neurons in the medial, but not in the lateral BNST, whereas no changes were observed in the PVN. These deprivation-induced changes were still prominent in adulthood. At PND 21, the density of Ca-binding protein calbindin D28K (CaBP-D28K)-expressing neurons was specifically increased in the medial, but not lateral BNST of father-deprived animals. In contrast, adult father-deprived animals show significantly decreased density of CaBP-D28K-expressing neurons in the lateral, but not medial BNST. Taken together, these results may have important implications for our understanding of the experience-driven development of neural circuits that regulate HPA activity mediating acute responses to stress and chronic anxiety.
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Affiliation(s)
- Tomasz Gos
- Institute of Forensic Medicine, Medical University of Gdansk, ul. Sklodowskiej-Curie 3a, 80-210, Gdansk, Poland
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33
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Hostetler CM, Ryabinin AE. The CRF system and social behavior: a review. Front Neurosci 2013; 7:92. [PMID: 23754975 PMCID: PMC3668170 DOI: 10.3389/fnins.2013.00092] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2013] [Accepted: 05/14/2013] [Indexed: 01/10/2023] Open
Abstract
The corticotropin-releasing factor (CRF) system plays a key role in a diversity of behaviors accompanying stress, anxiety and depression. There is also substantial research on relationships between social behaviors and the CRF system in a variety of taxa including fish, birds, rodents, and primates. Some of these relationships are due to the broad role of CRF and urocortins in stress and anxiety, but these peptides also modulate social behavior specifically. For example, the social interaction (SI) test is often used to measure anxiety-like behavior. Many components of the CRF system including CRF, urocortin1, and the R1 receptor have been implicated in SI, via general effects on anxiety as well as specific effects depending on the brain region. The CRF system is also highly responsive to chronic social stressors such as social defeat and isolation. Animals exposed to these stressors display a number of anxiety- and stress-related behaviors, accompanied by changes in specific components the CRF system. Although the primary focus of CRF research on social behavior has been on the deleterious effects of social stress, there are also insights on a role for CRF and urocortins in prosocial and affiliative behaviors. The CRF system has been implicated in parental care, maternal defense, sexual behavior, and pair bonding. Species differences in the ligands and CRF receptors have been observed in vole and bird species differing in social behavior. Exogenous administration of CRF facilitates partner preference formation in monogamous male prairie voles, and these effects are dependent on both the CRF R1 and R2 receptors. These findings are particularly interesting as studies have also implicated the CRF and urocortins in social memory. With the rapid progress of social neuroscience and in understanding the complex structure of the CRF system, the next challenge is in parsing the exact contribution of individual components of this system to specific social behaviors.
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Affiliation(s)
- Caroline M Hostetler
- Department of Behavioral Neuroscience, Oregon Health and Science University Portland, OR, USA
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34
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Tarragon E, Lopez D, Estrada C, Ana GC, Schenker E, Pifferi F, Bordet R, Richardson JC, Herrero MT. Octodon degus: a model for the cognitive impairment associated with Alzheimer's disease. CNS Neurosci Ther 2013; 19:643-8. [PMID: 23710760 DOI: 10.1111/cns.12125] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2013] [Revised: 04/18/2013] [Accepted: 04/19/2013] [Indexed: 12/12/2022] Open
Abstract
Octodon degus (O. degus) is a diurnal rodent that spontaneously develops several physiopathological conditions, analogous in many cases to those experienced by humans. In light of this, O. degus has recently been identified as a very valuable animal model for research in several medical fields, especially those concerned with neurodegenerative diseases in which risk is associated with aging. Octodon degus spontaneously develops β-amyloid deposits analogous to those observed in some cases of Alzheimer's disease (AD). Moreover, these deposits are thought to be the key feature for AD diagnosis, and one of the suggested causes of cell loss and cognitive deficit. This review aims to bring together information to support O. degus as a valuable model for the study of AD.
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Affiliation(s)
- Ernesto Tarragon
- Clinical & Experimental Neuroscience (NiCE) and Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), School of Health Sciences (Medicine), University Jaume I of Castellon, Castellon de la Plana, Spain
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35
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Mychasiuk R, Harker A, Ilnytskyy S, Gibb R. Paternal stress prior to conception alters DNA methylation and behaviour of developing rat offspring. Neuroscience 2013; 241:100-5. [PMID: 23531434 DOI: 10.1016/j.neuroscience.2013.03.025] [Citation(s) in RCA: 80] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2012] [Revised: 03/08/2013] [Accepted: 03/09/2013] [Indexed: 01/28/2023]
Abstract
Although there has been an abundance of research focused on offspring outcomes associated with maternal experiences, there has been limited examination of the relationship between paternal experiences and offspring brain development. As spermatogenesis is a continuous process, experiences that have the ability to alter epigenetic regulation in fathers may actually change developmental trajectories of offspring. The purpose of this study was to examine the effects of paternal stress prior to conception on behaviour and the epigenome of both male and female developing rat offspring. Male Long-Evans rats were stressed for 27 consecutive days and then mated with control female rats. Early behaviour was tested in offspring using the negative geotaxis task and the open field. At P21 offspring were sacrificed and global DNA methylation levels in the hippocampus and frontal cortex were analysed. Paternal stress prior to conception altered behaviour of all offspring on the negative geotaxis task, delaying acquisition of the task. In addition, male offspring demonstrated a reduction in stress reactivity in the open field paradigm spending more time than expected in the centre of the open field. Paternal stress also altered DNA methylation patterns in offspring at P21, global methylation was reduced in the frontal cortex of female offspring, but increased in the hippocampus of both male and female offspring. The results from this study clearly demonstrate that paternal stress during spermatogenesis can influence offspring behaviour and DNA methylation patterns, and these affects occur in a sex-dependent manner. Development takes place in the centre of a complex interaction between maternal, paternal, and environmental influences, which combine to produce the various phenotypes and individual differences that we perceive.
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Affiliation(s)
- R Mychasiuk
- University of Lethbridge, Lethbridge, AB, Canada.
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Kolb B, Mychasiuk R, Muhammad A, Li Y, Frost DO, Gibb R. Experience and the developing prefrontal cortex. Proc Natl Acad Sci U S A 2012; 109 Suppl 2:17186-93. [PMID: 23045653 PMCID: PMC3477383 DOI: 10.1073/pnas.1121251109] [Citation(s) in RCA: 330] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The prefrontal cortex (PFC) receives input from all other cortical regions and functions to plan and direct motor, cognitive, affective, and social behavior across time. It has a prolonged development, which allows the acquisition of complex cognitive abilities through experience but makes it susceptible to factors that can lead to abnormal functioning, which is often manifested in neuropsychiatric disorders. When the PFC is exposed to different environmental events during development, such as sensory stimuli, stress, drugs, hormones, and social experiences (including both parental and peer interactions), the developing PFC may develop in different ways. The goal of the current review is to illustrate how the circuitry of the developing PFC can be sculpted by a wide range of pre- and postnatal factors. We begin with an overview of prefrontal functioning and development, and we conclude with a consideration of how early experiences influence prefrontal development and behavior.
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Affiliation(s)
- Bryan Kolb
- Department of Neuroscience, Canadian Centre for Behavioural Neuroscience, University of Lethbridge, Lethbridge, AB, Canada.
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Braun K, Seidel K, Holetschka R, Groeger N, Poeggel G. Paternal deprivation alters the development of catecholaminergic innervation in the prefrontal cortex and related limbic brain regions. Brain Struct Funct 2012; 218:859-72. [PMID: 22706761 DOI: 10.1007/s00429-012-0434-1] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2012] [Accepted: 05/22/2012] [Indexed: 01/11/2023]
Abstract
The impact of paternal care on the development of catecholaminergic fiber innervations in the prefrontal cortex, nucleus accumbens, hippocampus and the amygdala was quantitatively investigated in the biparental Octodon degus. Two age (juvenile, adult) and rearing groups: (1) degus reared without father and (2) degus raised by both parents were compared. Juvenile father-deprived animals showed significantly elevated densities of TH-immunoreactive fibers in all analyzed regions, except in the orbitofrontal cortex, as compared to biparentally reared animals. This difference between the two rearing groups was still evident in adulthood in the prelimbic and infralimbic cortices and in the hippocampal formation. Interestingly, the elevated TH fiber density in both nucleus accumbens subregions was reversed in adulthood, i.e. adult father-deprived animals showed strongly reduced TH fiber densities as compared to biparentally reared animals. We show here that paternal care plays a critical role in the functional maturation of catecholaminergic innervation patterns in prefrontal and limbic brain circuits.
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Affiliation(s)
- Katharina Braun
- Department of Zoology/Developmental Neurobiology, Institute for Biology, Otto-von-Guericke University, Leipziger Str 44, 39120 Magdeburg, Germany.
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Tactile stimulation during development alters behaviour and neuroanatomical organization of normal rats. Behav Brain Res 2012; 231:86-91. [DOI: 10.1016/j.bbr.2012.02.043] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2012] [Revised: 02/21/2012] [Accepted: 02/25/2012] [Indexed: 11/18/2022]
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Braun K. The prefrontal-limbic system: development, neuroanatomy, function, and implications for socioemotional development. Clin Perinatol 2011; 38:685-702. [PMID: 22107898 DOI: 10.1016/j.clp.2011.08.013] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Abstract
The knowledge that neonatal emotional experience and associated learning processes are critical in the maturation of prefronto-limbic circuits emphasizes the importance of preterm and neonatal care. The further improvement of care and intervention strategies requires a deeper understanding of epigenetic mechanisms mediating experience-induced synaptic reorganization underlying the emergence of emotional and cognitive behavioral traits. Interdisciplinary research efforts are needed in which pediatricians and developmental biologists and psychologists merge their knowledge, concepts, and methodology. The hope is that the translational relevance of research efforts can be improved through a greater interaction between basic and clinical scientists.
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Affiliation(s)
- Katharina Braun
- Department of Zoology and Developmental Neurobiology, Institute of Biology, Otto von Guericke University Magdeburg, Leipziger Street 44, Magdeburg, Germany.
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