151
|
Díaz-Estrada VX, Barradas-Moctezuma M, Herrera-Covarrubias D, Manzo J, Coria-Avila GA. Nature and nurture of sexual partner preference: Teachings from prenatal administration of acetaminophen in male rats. Horm Behav 2020; 124:104775. [PMID: 32422195 DOI: 10.1016/j.yhbeh.2020.104775] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Revised: 04/09/2020] [Accepted: 05/12/2020] [Indexed: 11/16/2022]
Abstract
The organizational-activational hypothesis indicates that activation of adult sexual behavior in males depends on organization of the masculine brain during the perinatal sensitive period. In the medial preoptic area such masculinization depends on a neuroendocrine cascade that includes exposure to testosterone, aromatization to estradiol, activation of estrogen receptors, synthesis of cyclooxygenase (COX), increase of prostaglandins, release of glutamate, and activation of AMPA receptors that result in the formation of more dendritic spines. Thus, in the present study we assessed the sexual partner preference (SPP) of adult male rats prenatally treated with acetaminophen (APAP), an analgesic/antipyretic drug that inhibits COX-2 and is commonly used and prescribed during pregnancy. Female rats received either saline (2 ml/kg s.c.) or APAP (50 mg/kg s.c.) every 12 h, during days 16-20 of pregnancy. At postnatal day PD60 half of the male offspring were exposed to sexual experience with receptive females during 5 trials, and the other half remained sexually naïve. At PD90 all them were tested for SPP with one sexually receptive female and one stud male. The results indicated that only APAP-naïve males failed to display SPP. However, APAP-experienced males displayed SPP for females. We discuss the effects of prenatal APAP in the disruption of unconditioned responses towards females (nature mechanisms), and the effects of sexual experience (nurture mechanisms) in the development of conditioned heterosexual preference.
Collapse
Affiliation(s)
- V X Díaz-Estrada
- Centro de Investigaciones Cerebrales, Universidad Veracruzana, 91190 Xalapa, Veracruz, Mexico
| | - M Barradas-Moctezuma
- Centro de Investigaciones Cerebrales, Universidad Veracruzana, 91190 Xalapa, Veracruz, Mexico
| | - D Herrera-Covarrubias
- Centro de Investigaciones Cerebrales, Universidad Veracruzana, 91190 Xalapa, Veracruz, Mexico
| | - J Manzo
- Centro de Investigaciones Cerebrales, Universidad Veracruzana, 91190 Xalapa, Veracruz, Mexico
| | - G A Coria-Avila
- Centro de Investigaciones Cerebrales, Universidad Veracruzana, 91190 Xalapa, Veracruz, Mexico.
| |
Collapse
|
152
|
Stenson AF, Nugent NR, van Rooij SJH, Minton ST, Compton AB, Hinrichs R, Jovanovic T. Puberty drives fear learning during adolescence. Dev Sci 2020; 24:e13000. [PMID: 32497415 DOI: 10.1111/desc.13000] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 03/16/2020] [Accepted: 05/07/2020] [Indexed: 12/13/2022]
Abstract
Risk for adverse outcomes, including the onset of mental illness, increases during adolescence. This increase may be linked to both new exposures, such as violence at home or in the community, or to physiological changes driven by puberty. There are significant sex differences in adolescent risk, for instance, anxiety disorders are significantly more prevalent in girls than boys. Fear learning is linked to mental health and may develop during adolescence, but the role of puberty in adolescent-specific change has not yet been systematically evaluated. We conducted a longitudinal study of fear learning that tested fear-potentiated startle (FPS) in 78 children (40 girls) aged 8-16 years. Participants completed two to three visits that included a differential fear conditioning task and self-report of both pubertal status and violence exposure. We tested for effects of sex, pubertal status, and violence exposure on FPS over time with latent growth curve models. We also examined the association between FPS and later anxiety symptoms. We found significant changes in FPS to the threat cue, but not the safety cue, across visits. Higher pubertal status was significantly associated with increased FPS to threat cues at each visit, whereas sex and violence exposure were not. FPS to threat during the baseline visit also predicted later anxiety symptoms. These findings suggest that puberty drives increased fear response to threat cues similarly for girls and boys, and that this effect may not be significantly impacted by individual differences in violence exposure during early adolescence.
Collapse
Affiliation(s)
- Anaïs F Stenson
- Department of Psychiatry and Behavioral Neurosciences, Wayne State University School of Medicine, Detroit, MI, USA.,Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine, Atlanta, GA, USA
| | - Nicole R Nugent
- Departments of Psychiatry and Human Behavior, Pediatrics, and Emergency Medicine, Warren Alpert Medical School of Brown University, Providence, RI, USA
| | - Sanne J H van Rooij
- Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine, Atlanta, GA, USA
| | - Sean T Minton
- Department of Psychiatry and Behavioral Neurosciences, Wayne State University School of Medicine, Detroit, MI, USA.,Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine, Atlanta, GA, USA
| | - Alisha B Compton
- Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine, Atlanta, GA, USA
| | - Rebecca Hinrichs
- Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine, Atlanta, GA, USA
| | - Tanja Jovanovic
- Department of Psychiatry and Behavioral Neurosciences, Wayne State University School of Medicine, Detroit, MI, USA.,Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine, Atlanta, GA, USA
| |
Collapse
|
153
|
Knight EL, Sarkar A, Prasad S, Mehta PH. Beyond the challenge hypothesis: The emergence of the dual-hormone hypothesis and recommendations for future research. Horm Behav 2020; 123:104657. [PMID: 31863735 PMCID: PMC7311256 DOI: 10.1016/j.yhbeh.2019.104657] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 12/12/2019] [Accepted: 12/16/2019] [Indexed: 11/20/2022]
Abstract
The challenge hypothesis makes specific predictions about the association between testosterone and status-seeking behaviors, but the findings linking testosterone to these behaviors are often inconsistent. The dual-hormone hypothesis was developed to help explain these inconsistencies. Specifically, according to this hypothesis, testosterone's association with status-seeking behavior depends on levels of cortisol. Here, we (1) describe the dual-hormone hypothesis in relation to the challenge hypothesis; (2) review recent studies that tested the dual-hormone hypothesis as well as meta-scientific evidence of heterogeneous dual-hormone findings across studies; (3) discuss potential explanations for this heterogeneity, including methodological considerations, contextual factors, and individual differences; and (4) provide recommendations for new work aimed at testing and extending the dual-hormone hypothesis.
Collapse
Affiliation(s)
- Erik L Knight
- Center for Healthy Aging, Pennsylvania State University, United States of America; Department of Biobehavioral Health, Pennsylvania State University, United States of America.
| | - Amar Sarkar
- Trinity College, University of Cambridge, United Kingdom; Leverhulme Centre for Human Evolutionary Studies, Department of Archaeology, University of Cambridge, United Kingdom
| | - Smrithi Prasad
- Marshall School of Business, University of Southern California, United States of America
| | - Pranjal H Mehta
- Department of Experimental Psychology, University College London, United Kingdom
| |
Collapse
|
154
|
Campisi SC, Zasowski C, Shah S, Shah A, Bradley-Ridout G, Korczak DJ, Szatmari P. Assessing the Evidence of Micronutrients on Depression among Children and Adolescents: An Evidence Gap Map. Adv Nutr 2020; 11:908-927. [PMID: 32193537 PMCID: PMC7360446 DOI: 10.1093/advances/nmaa021] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Revised: 01/13/2020] [Accepted: 02/12/2020] [Indexed: 12/15/2022] Open
Abstract
There is some evidence indicating that nutrition may have the ability to prevent, treat, and/or influence the severity of depression. The aims of this evidence gap map (EGM) are to provide an overview and to determine evidence gaps in the existing research on micronutrients and their impact on depression among children and adolescents. We conducted a comprehensive search in multiple databases of primary and secondary literature assessing the impact of micronutrients on depression-related outcomes such as unipolar depression, major depressive disorders, dysthymia, acute depression, and mood disorders. Abstracts and full-text articles were dual-screened based on predefined eligibility criteria. A total of 30 primary research publications were included in the EGM. About 47% of included studies focused on late adolescents (15-19 y), ∼40% on early adolescents (10-14 y), and ∼13% on children aged 6-9 y. Among the included studies, 8 studies examined a single micronutrient intervention and 22 studies examined micronutrient concentrations (either intake or serum), and their impact on depression. The most frequently studied micronutrients were vitamin D (n = 8), zinc (n = 8), iron (n = 6), folate (n = 7), and vitamin B-12 (n = 5). More longitudinal studies and trials are needed to determine the role of micronutrients in the etiology and treatment of depression among children and adolescents.
Collapse
Affiliation(s)
- Susan C Campisi
- Centre for Global Child Health, Hospital for Sick Children, Toronto, Canada
- Department of Nutritional Sciences, Faculty of Medicine, University of Toronto, Canada
| | - Clare Zasowski
- School of Nutrition, Ryerson University, Faculty of Community Service, Toronto, Canada
| | - Shailja Shah
- Cundill Centre for Child and Youth Depression, Centre for Addiction and Mental Health Toronto, Canada
| | - Ashka Shah
- School of Medicine, Royal College of Surgeons in Ireland, Dublin, Ireland
| | | | - Daphne J Korczak
- Department of Psychiatry, Faculty of Medicine, University of Toronto, Canada
- Department of Psychiatry, Hospital for Sick Children, Canada
| | - Peter Szatmari
- Cundill Centre for Child and Youth Depression, Centre for Addiction and Mental Health Toronto, Canada
- Department of Psychiatry, Faculty of Medicine, University of Toronto, Canada
- Department of Psychiatry, Hospital for Sick Children, Canada
| |
Collapse
|
155
|
Pirwani AF, Fang Z, Li B, Smith A, Northoff G, Ismail N. The effects of gastrointestinal symptoms on structural grey matter volume in youth. Int J Dev Neurosci 2020; 80:477-488. [PMID: 32479685 DOI: 10.1002/jdn.10044] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Revised: 05/22/2020] [Accepted: 05/25/2020] [Indexed: 12/17/2022] Open
Abstract
Previous neuroimaging studies have examined the association between changes in brain structure and gastrointestinal symptoms (GIS), seen in disorders such as Irritable Bowel Syndrome and Irritable Bowel Disease. Studies in adults have found changes in white and grey matter volume (GMV) in patients with various gastrointestinal disorders. However, it is unclear whether GIS-related structural changes in the brain are limited to adults or could be present throughout the lifespan. Given that gastrointestinal disorders are typically diagnosed between 4 and 18 years old, we investigated GIS-induced morphological changes in pre-adolescents (8-10), adolescents (12-16 years) and young adults (17-21 years). Using a voxel-based morphometry (VBM) analysis, we compared regional grey matter volume (GMV) between participants with GIS and controls, using structural brain images from the Philadelphia Neurodevelopmental Cohort (PNC) database. A total of 211 participants (107 participants with GISs and 104 control participants) who had undergone structural magnetic resonance imaging were analysed. VBM analysis was used to objectively analyse GMV across the whole brain and compare between participants with GIS and controls. Participants experiencing GIS showed smaller GMV in regions within the limbic system/basal ganglia (bilateral caudate, bilateral ventral hippocampus, bilateral amygdala and bilateral superior orbital frontal cortex), and larger GMV in regions within the pain-matrix (thalamus, bilateral putamen, right mid-frontal gyrus) compared to controls. These differences were most prominent in the adolescent and young adult groups compared to pre-adolescents. In conclusion, the structural differences found in participants with GIS support the need for further research into the neurophysiological impact of these symptoms.
Collapse
Affiliation(s)
- Atiqa F Pirwani
- Neuroimmunology, Stress and Endocrinology (NISE) Lab, Faculty of Social Science, School of Psychology, University of Ottawa, Ottawa, ON, Canada
| | - Zhuo Fang
- University of Ottawa Brain and Mind Research Institute, Ottawa, ON, Canada.,Brain Imaging Group (BIG) Lab, Faculty of Social Science, School of Psychology, University of Ottawa, Ottawa, ON, Canada
| | - Bo Li
- Advanced Research Institute of Multidisciplinary Science, Beijing Institute of Technology, Beijing, China.,Beijing Key Laboratory for Separation and Analysis in Biomedicine and Pharmaceuticals, School of Life Science, Beijing Institute of Technology, Beijing, China
| | - Andra Smith
- Brain Imaging Group (BIG) Lab, Faculty of Social Science, School of Psychology, University of Ottawa, Ottawa, ON, Canada
| | - Georg Northoff
- University of Ottawa Brain and Mind Research Institute, Ottawa, ON, Canada.,Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Nafissa Ismail
- Neuroimmunology, Stress and Endocrinology (NISE) Lab, Faculty of Social Science, School of Psychology, University of Ottawa, Ottawa, ON, Canada.,University of Ottawa Brain and Mind Research Institute, Ottawa, ON, Canada
| |
Collapse
|
156
|
Mutwill AM, Zimmermann TD, Hennicke A, Richter SH, Kaiser S, Sachser N. Adaptive reshaping of the hormonal phenotype after social niche transition in adulthood. Proc Biol Sci 2020; 287:20200667. [PMID: 32517608 DOI: 10.1098/rspb.2020.0667] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Phenotypic plasticity allows individuals to adjust traits to the environment. Whether long-term adjustments of the phenotype occur during later life stages is largely unknown. To address this question, we examined whether hormonal phenotypes that are shaped by the environment during adolescence can still be reshaped in full adulthood. For this, guinea pig males were either housed in mixed-sex colonies or in heterosexual pairs. In adulthood, males were individually transferred to pair housing with a female. This way, a social niche transition was induced in colony-housed males, but not in pair-housed males. Before transfer, corresponding to findings in adolescence, adult colony-housed males showed significantly higher baseline testosterone levels and lower cortisol responsiveness than pair-housed males. One month after transfer, the hormonal phenotype of colony-housed males was changed towards that of pair-housed males: animals showed comparable baseline testosterone levels and cortisol responsiveness was significantly increased in colony-housed males. This endocrine readjustment builds the basis for an adaptive behavioural tactic in the new social situation. Thus, an adaptive change of the behavioural phenotype may still occur in adulthood via modification of underlying mechanisms. This suggests a greater role for developmental plasticity in later life stages than is commonly presumed.
Collapse
Affiliation(s)
- Alexandra M Mutwill
- Department of Behavioural Biology, University of Münster, 48149 Münster, Germany.,Münster Graduate School of Evolution, University of Münster, 48149 Münster, Germany
| | - Tobias D Zimmermann
- Department of Behavioural Biology, University of Münster, 48149 Münster, Germany
| | - Antonia Hennicke
- Department of Behavioural Biology, University of Münster, 48149 Münster, Germany
| | - S Helene Richter
- Department of Behavioural Biology, University of Münster, 48149 Münster, Germany.,Münster Graduate School of Evolution, University of Münster, 48149 Münster, Germany
| | - Sylvia Kaiser
- Department of Behavioural Biology, University of Münster, 48149 Münster, Germany.,Münster Graduate School of Evolution, University of Münster, 48149 Münster, Germany
| | - Norbert Sachser
- Department of Behavioural Biology, University of Münster, 48149 Münster, Germany.,Münster Graduate School of Evolution, University of Münster, 48149 Münster, Germany
| |
Collapse
|
157
|
Abstract
The hippocampus is central to spatial learning and stress responsiveness, both of which differ in form and function in males versus females, yet precisely how the hippocampus contributes to these sex differences is largely unknown. In reproductively mature individuals, sex differences in the steroid hormone milieu undergirds many sex differences in hippocampal-related endpoints. However, there is also evidence for developmental programming of adult hippocampal function, with a central role for androgens as well as their aromatized byproduct, estrogens. These include sex differences in cell genesis, synapse formation, dendritic arborization, and excitatory/inhibitory balance. Enduring effects of steroid hormone modulation occur during two developmental epochs, the first being the classic perinatal critical period of sexual differentiation of the brain and the other being adolescence and the associated hormonal changes of puberty. The cellular mechanisms by which steroid hormones enduringly modify hippocampal form and function are poorly understood, but we here review what is known and highlight where attention should be focused.
Collapse
|
158
|
Renczés E, Borbélyová V, Keresztesová L, Ostatníková D, Celec P, Hodosy J. The age-dependent effect of pre-pubertal castration on anxiety-like behaviour in male rats. Andrologia 2020; 52:e13649. [PMID: 32436231 DOI: 10.1111/and.13649] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Accepted: 04/28/2020] [Indexed: 11/28/2022] Open
Abstract
Adolescence is considered to be a critical period of sex hormone action (re)organising the brain and determining the behavioural phenotype. Such organisational effects in the brain might be the cause of sex differences in some behavioural features. In this experiment, we aimed to examine the role of pubertal sex hormones in development of anxiety in male rats. Male rats underwent gonadectomy prior to puberty onset, and were tested for explorative and anxiety-like behaviour in adolescence as well as in young adulthood. In adolescence, but not in adulthood, gonadectomised rats spend by 50% more time (p < .05) in the centre zone of the open-field than sham-operated counterparts. Young adult gonadectomised rats showed approximately 1.5-fold greater exploratory activity, in both open field (p < .001) and elevated plus maze (p < .01), in comparison with young adult control rats. Our results indicate that pre-pubertal castration may have test-specific anxiolytic effect in adolescent male rats, and it may attenuate the decline in explorative behaviour in young adult males. These differences in short- and long-term effects of gonadectomy could explain some contradictory results of previous studies on the role of testosterone in anxiety-like behaviour of male rodents. Thus, the age-specific consequences of pre-pubertal hormone deprivation should be considered.
Collapse
Affiliation(s)
- Emese Renczés
- Institute of Molecular Biomedicine, Faculty of Medicine, Comenius University in Bratislava, Bratislava, Slovakia
| | - Veronika Borbélyová
- Institute of Molecular Biomedicine, Faculty of Medicine, Comenius University in Bratislava, Bratislava, Slovakia
| | - Lenka Keresztesová
- Institute of Molecular Biomedicine, Faculty of Medicine, Comenius University in Bratislava, Bratislava, Slovakia
| | - Daniela Ostatníková
- Institute of Physiology, Faculty of Medicine, Comenius University in Bratislava, Bratislava, Slovakia
| | - Peter Celec
- Institute of Molecular Biomedicine, Faculty of Medicine, Comenius University in Bratislava, Bratislava, Slovakia.,Institute of Pathophysiology, Faculty of Medicine, Comenius University in Bratislava, Bratislava, Slovakia.,Department of Molecular Biology, Faculty of Natural Sciences, Comenius University in Bratislava, Bratislava, Slovakia
| | - Július Hodosy
- Institute of Molecular Biomedicine, Faculty of Medicine, Comenius University in Bratislava, Bratislava, Slovakia.,Institute of Physiology, Faculty of Medicine, Comenius University in Bratislava, Bratislava, Slovakia
| |
Collapse
|
159
|
Massa MG, Correa SM. Sexes on the brain: Sex as multiple biological variables in the neuronal control of feeding. Biochim Biophys Acta Mol Basis Dis 2020; 1866:165840. [PMID: 32428559 DOI: 10.1016/j.bbadis.2020.165840] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Revised: 05/05/2020] [Accepted: 05/13/2020] [Indexed: 12/21/2022]
Abstract
Neuronal interactions at the level of vagal, homeostatic, and hedonic circuitry work to regulate the neuronal control of feeding. This integrative system appears to vary across sex and gender in the animal and human worlds. Most feeding research investigating these variations across sex and gender focus on how the organizational and activational mechanisms of hormones contribute to these differences. However, in limited studies spanning both the central and peripheral nervous systems, sex differences in feeding have been shown to manifest not just at the level of the hormonal, but also at the chromosomal, epigenetic, cellular, and even circuitry levels to alter food intake. In this review, we provide a brief orientation to the current understanding of how these neuronal systems interact before dissecting selected studies from the recent literature to exemplify how feeding physiology at all levels can be affected by the various components of sex.
Collapse
Affiliation(s)
- Megan G Massa
- Department of Integrative Biology and Physiology, University of California, Los Angeles, CA, United States of America; Laboratory of Neuroendocrinology of the Brain Research Institute, University of California, Los Angeles, CA, United States of America; Neuroscience Interdepartmental Doctoral Program, University of California, Los Angeles, CA, United States of America.
| | - Stephanie M Correa
- Department of Integrative Biology and Physiology, University of California, Los Angeles, CA, United States of America; Laboratory of Neuroendocrinology of the Brain Research Institute, University of California, Los Angeles, CA, United States of America.
| |
Collapse
|
160
|
Asher L, England GCW, Sommerville R, Harvey ND. Teenage dogs? Evidence for adolescent-phase conflict behaviour and an association between attachment to humans and pubertal timing in the domestic dog. Biol Lett 2020; 16:20200097. [PMID: 32396785 PMCID: PMC7280042 DOI: 10.1098/rsbl.2020.0097] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
The relationship between parent and child changes around adolescence, with children believed to have: (i) an earlier puberty if they have less secure attachments to their carer; (ii) a phase of increased conflict behaviour toward their carer; and (iii) heightened conflict behaviour when carer attachments are less secure. We find support for analogous associations in adolescent dogs based on behaviour and reproductive timing of potential guide dogs. Bitches with behaviour indicative of insecure attachments pre-adolescence became reproductively capable earlier. Providing the first empirical evidence to our knowledge in support of adolescent-phase behaviour in dogs, we found a passing phase of carer-specific conflict-like behaviour during adolescence (reduced trainability and responsiveness to commands), an effect that was more pronounced in dogs with behaviour indicative of less secure attachments. These results indicate a possibility for cross-species influence on reproductive development and highlight adolescence as a vulnerable time for dog–owner relationships.
Collapse
Affiliation(s)
- Lucy Asher
- Centre for Behaviour and Evolution, School of Natural and Environmental Sciences, Newcastle University, Agriculture Building, Newcastle NE1 7RU, UK
| | - Gary C W England
- School of Veterinary Medicine and Science, University of Nottingham, Sutton Bonington Campus, Leicestershire LE12 5RD, UK
| | - Rebecca Sommerville
- The Royal (Dick) School of Veterinary Studies, University of Edinburgh, Easter Bush Campus, Bush Farm Road, Edinburgh, Midlothian EH25 9RG, UK.,Behaviour by Becca, Lexington Building, Bow Quarter, London E3 2UF, UK
| | - Naomi D Harvey
- School of Veterinary Medicine and Science, University of Nottingham, Sutton Bonington Campus, Leicestershire LE12 5RD, UK
| |
Collapse
|
161
|
Shirazi TN, Self H, Cantor J, Dawood K, Cárdenas R, Rosenfield K, Ortiz T, Carré J, McDaniel MA, Blanchard R, Balasubramanian R, Delaney A, Crowley W, Breedlove SM, Puts D. Timing of peripubertal steroid exposure predicts visuospatial cognition in men: Evidence from three samples. Horm Behav 2020; 121:104712. [PMID: 32059854 PMCID: PMC8817672 DOI: 10.1016/j.yhbeh.2020.104712] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 01/23/2020] [Accepted: 02/05/2020] [Indexed: 10/25/2022]
Abstract
Experiments in male rodents demonstrate that sensitivity to the organizational effects of steroid hormones decreases across the pubertal window, with earlier androgen exposure leading to greater masculinization of the brain and behavior. Similarly, some research suggests the timing of peripubertal exposure to sex steroids influences aspects of human psychology, including visuospatial cognition. However, prior studies have been limited by small samples and/or imprecise measures of pubertal timing. We conducted 4 studies to clarify whether the timing of peripubertal hormone exposure predicts performance on male-typed tests of spatial cognition in adulthood. In Studies 1 (n = 1095) and 2 (n = 173), we investigated associations between recalled pubertal age and spatial cognition in typically developing men, controlling for current testosterone levels in Study 2. In Study 3 (n = 51), we examined the relationship between spatial performance and the age at which peripubertal hormone replacement therapy was initiated in a sample of men with Isolated GnRH Deficiency. Across Studies 1-3, effect size estimates for the relationship between spatial performance and pubertal timing ranged from. -0.04 and -0.27, and spatial performance was unrelated to salivary testosterone in Study 2. In Study 4, we conducted two meta-analyses of Studies 1-3 and four previously published studies. The first meta-analysis was conducted on correlations between spatial performance and measures of the absolute age of pubertal timing, and the second replaced those correlations with correlations between spatial performance and measures of relative pubertal timing where available. Point estimates for correlations between pubertal timing and spatial cognition were -0.15 and -0.12 (both p < 0.001) in the first and second meta-analyses, respectively. These associations were robust to the exclusion of any individual study. Our results suggest that, for some aspects of neural development, sensitivity to gonadal hormones declines across puberty, with earlier pubertal hormone exposure predicting greater sex-typicality in psychological phenotypes in adulthood. These results shed light on the processes of behavioral and brain organization and have implications for the treatment of IGD and other conditions wherein pubertal timing is pharmacologically manipulated.
Collapse
Affiliation(s)
- Talia N Shirazi
- Department of Anthropology, Pennsylvania State University, Carpenter Building, University Park, PA 16802, USA
| | - Heather Self
- Department of Anthropology, Pennsylvania State University, Carpenter Building, University Park, PA 16802, USA
| | - James Cantor
- Centre for Addition and Mental Health, 2 Carlton Street, suite 1820, Toronto, Ontario M5B 1J3, Canada
| | - Khytam Dawood
- Department of Psychology, Pennsylvania State University, Moore Building, University Park, PA 16802, USA
| | - Rodrigo Cárdenas
- Department of Psychology, Pennsylvania State University, Moore Building, University Park, PA 16802, USA
| | - Kevin Rosenfield
- Department of Anthropology, Pennsylvania State University, Carpenter Building, University Park, PA 16802, USA
| | - Triana Ortiz
- Department of Psychology, Nipissing University, 100 College Drive, North Bay, Ontario P1B 8L7, Canada
| | - Justin Carré
- Department of Psychology, Nipissing University, 100 College Drive, North Bay, Ontario P1B 8L7, Canada
| | - Michael A McDaniel
- Department of Management, Virginia Commonwealth University, Arlington, VA 22209, USA
| | - Ray Blanchard
- Department of Psychiatry, University of Toronto, 250 College, Toronto, Ontario M5T 1L8, Canada
| | | | - Angela Delaney
- Reproductive Physiology and Pathophysiology Group, National Institutes of Health, 10 Center Drive, Bethesda, MD 20814, USA
| | - William Crowley
- Reproductive Endocrine Unit, Massachusetts General Hospital, 55 Fruit St, Boston, MA 02114, USA
| | - S Marc Breedlove
- Department of Neuroscience, Michigan State University. 240 Giltner Hall, East Lansing, MI 48824, USA
| | - David Puts
- Department of Anthropology, Pennsylvania State University, Carpenter Building, University Park, PA 16802, USA.
| |
Collapse
|
162
|
Arnold AP. Sexual differentiation of brain and other tissues: Five questions for the next 50 years. Horm Behav 2020; 120:104691. [PMID: 31991182 PMCID: PMC7440839 DOI: 10.1016/j.yhbeh.2020.104691] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Revised: 01/13/2020] [Accepted: 01/15/2020] [Indexed: 12/16/2022]
Abstract
This paper is part of the celebration of the 50th anniversary of founding of the journal Hormones and Behavior, the official journal of the Society for Behavioral Neuroendocrinology. All sex differences in phenotypic development stem from the sexual imbalance in X and Y chromosomes, which are the only known differences in XX and XY zygotes. The sex chromosome genes act within cells to cause differences in phenotypes of XX and XY cells throughout the body. In the gonad, they determine the type of gonad, leading to differences in secretion of testicular vs. ovarian hormones, which cause further sex differences in tissue function. These current ideas of sexual differentiation are briefly contrasted with a hormones-only view of sexual differentiation of the last century. The multiple, independent action of diverse sex-biasing agents means that sex-biased factors can be synergistic, increasing sex differences, or compensatory, making the two sexes more equal. Several animal models have been fruitful in demonstrating sex chromosome effects, and interactions with gonadal hormones. MRI studies of human brains demonstrate variation in brain structure associated with both differences in gonadal hormones, and in the number of X and Y chromosomes. Five unanswered questions are posed as a challenge to future investigators to improve understanding of sexual differentiation throughout the body.
Collapse
Affiliation(s)
- Arthur P Arnold
- Department Integrative Biology and Physiology, University of California, Los Angeles, United States of America.
| |
Collapse
|
163
|
Zhang S, Zhang S, Zhu D, Jiao Z, Zhao X, Sun M, Che Y, Feng X. Effects of 17β-trenbolone exposure on sex hormone synthesis and social behaviours in adolescent mice. CHEMOSPHERE 2020; 245:125679. [PMID: 31869672 DOI: 10.1016/j.chemosphere.2019.125679] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Revised: 12/11/2019] [Accepted: 12/15/2019] [Indexed: 06/10/2023]
Abstract
17β-Trenbolone (17β-TBOH) is an endocrine disruptor that has been widely reported in aquatic organisms. However, little is known about the effect of 17β-TBOH on mammals, particularly on the development of adolescents. Through a series of behavioural experiments, exposure to at 80 μg kg -1 d -1 and 800 μg kg -1 d -1 17β-TBOH during puberty (from PND 28 to 56, male mice) increased anxiety-like behaviours. Exposure to the low dose of 80 μg kg -1 d -1 resulted in a clear social avoidance behaviour in mice. The two doses affected testicular development and endogenous androgen synthesis in male mice. In addition, 17β-TBOH exposure altered the differentiation of oligodendrocytes and the formation of the myelin sheath in the medial prefrontal cortex (mPFC). These results reveal the effects of 17β-TBOH on the behaviours, gonadal and neurodevelopment of adolescent mammals. In addition, the inhibition of the secretion of endogenous hormones and decrease in the formation of the myelin sheath in mPFC may be associated with the 17β-TBOH-induced behavioural changes in mice.
Collapse
Affiliation(s)
- Shaozhi Zhang
- College of Life Science, The Key Laboratory of Bioactive Materials, Ministry of Education, State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, 300071, China
| | - Shuyu Zhang
- The Institute of Robotics and Automatic Information Systems, Nankai University, Tianjin, 300071, China
| | - Dashuai Zhu
- School of Medicine, Nankai University, Tianjin, 300071, China
| | - Zihao Jiao
- The Institute of Robotics and Automatic Information Systems, Nankai University, Tianjin, 300071, China
| | - Xin Zhao
- The Institute of Robotics and Automatic Information Systems, Nankai University, Tianjin, 300071, China
| | - Mingzhu Sun
- The Institute of Robotics and Automatic Information Systems, Nankai University, Tianjin, 300071, China.
| | - Yongzhe Che
- School of Medicine, Nankai University, Tianjin, 300071, China.
| | - Xizeng Feng
- College of Life Science, The Key Laboratory of Bioactive Materials, Ministry of Education, State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, 300071, China.
| |
Collapse
|
164
|
Ho TC, Colich NL, Sisk LM, Oskirko K, Jo B, Gotlib IH. Sex differences in the effects of gonadal hormones on white matter microstructure development in adolescence. Dev Cogn Neurosci 2020; 42:100773. [PMID: 32452463 PMCID: PMC7058897 DOI: 10.1016/j.dcn.2020.100773] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2019] [Revised: 01/27/2020] [Accepted: 02/13/2020] [Indexed: 11/17/2022] Open
Abstract
Adolescence is characterized by rapid brain development in white matter (WM) that is attributed in part to surges in gonadal hormones. To date, however, there have been few longitudinal investigations relating changes in gonadal hormones and WM development in adolescents. We acquired diffusion-weighted MRI to estimate mean fractional anisotropy (FA) from 10 WM tracts and salivary testosterone from 51 females and 29 males (ages 9-14 years) who were matched on pubertal stage and followed, on average, for 2 years. We tested whether interactions between sex and changes in testosterone levels significantly explained changes in FA. We found positive associations between changes in testosterone and changes in FA within the corpus callosum, cingulum cingulate, and corticospinal tract in females (all ps<0.05, corrected) and non-significant associations in males. We also collected salivary estradiol from females and found that increases in estradiol were associated with increases in FA in the left uncinate fasciculus (p = 0.04, uncorrected); however, this effect was no longer significant after accounting for changes in testosterone. Our findings indicate there are sex differences in how changes in testosterone relate to changes in WM microstructure of tracts that support impulse control and emotion regulation across the pubertal transition.
Collapse
Affiliation(s)
- Tiffany C Ho
- Stanford University, Department of Psychology, Stanford, CA, United States; Stanford University, Department of Psychiatry and Behavioral Sciences, Stanford, CA, United States; University of California, San Francisco, Department of Psychiatry & Weill Institute for Neurosciences, San Francisco, CA, United States.
| | - Natalie L Colich
- University of Washington, Department of Psychology, Seattle, WA, United States
| | - Lucinda M Sisk
- Stanford University, Department of Psychology, Stanford, CA, United States; Yale University, Department of Psychology, New Haven, CT, United States
| | - Kira Oskirko
- Stanford University, Department of Psychology, Stanford, CA, United States
| | - Booil Jo
- Stanford University, Department of Psychiatry and Behavioral Sciences, Stanford, CA, United States
| | - Ian H Gotlib
- Stanford University, Department of Psychology, Stanford, CA, United States
| |
Collapse
|
165
|
Simone JJ, Baumbach JL, McPherson J, McCormick CM. Adolescent CB1 receptor antagonism influences subsequent social interactions and neural activity in female rats. Int J Dev Neurosci 2020; 80:319-333. [PMID: 32220094 DOI: 10.1002/jdn.10028] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Revised: 03/18/2020] [Accepted: 03/19/2020] [Indexed: 01/05/2023] Open
Abstract
We previously demonstrated that repeated exposure to the CB1 receptor antagonist/inverse agonist AM251 in adolescence (PND 30-44) increased social interactions in female rats when tested 48 h after the final exposure to the antagonist. Here, we investigated whether the increased sociality would be present after a longer drug washout period (5 days) in both male and female rats (experiment 1), and sought to identify candidate brain regions that may explain the observed differences in social behaviours between AM251 and vehicle-treated female rats (experiment 2). While drug-free, adolescent AM251 treatment increased social interactions in females and not in males. AM251 female rats had increased neural activity (as measured by the expression of early growth response protein-1; EGR-1) in the nucleus accumbens shell and cingulate gyrus of the medial prefrontal cortex, with no observed differences in EGR-1 expression in the dorsal hippocampus, nucleus accumbens core, or prelimbic and infralimbic subdivisions of the medial prefrontal cortex relative to vehicle rats. Together, these results demonstrate a sex-specific role of adolescent endocannabinoid signalling in the normative development of social behaviours and provide further support for adolescence as a vulnerable period for the effects of altered endocannabinoid signalling.
Collapse
Affiliation(s)
- Jonathan J Simone
- Department of Biological Sciences, Brock University, St. Catharines, ON, Canada
| | - Jennet L Baumbach
- Department of Psychology, Brock University, St. Catharines, ON, Canada
| | | | - Cheryl M McCormick
- Department of Biological Sciences, Brock University, St. Catharines, ON, Canada.,Department of Psychology, Brock University, St. Catharines, ON, Canada.,Centre for Neuroscience, Brock University, St. Catharines, ON, Canada
| |
Collapse
|
166
|
Kraus S, Trillmich F, Guenther A. Within-Family Environment and Cross-Fostering Stress Affect Behavior and Physiology in Wild Cavies ( Cavia aperea). Front Psychol 2020; 11:178. [PMID: 32116966 PMCID: PMC7026460 DOI: 10.3389/fpsyg.2020.00178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Accepted: 01/27/2020] [Indexed: 11/29/2022] Open
Abstract
Stability of personality traits is well-documented for a wide variety of animals. However, previous results also suggest that behavioral phenotypes are plastic during early ontogeny and can be adaptively shaped to the social environment. In cavies (Cavia aperea), it has already been documented that the size at birth relative to siblings (size rank) greatly influences various behavioral and physiological traits that last at least until independence. The aim of the current study was (1) to investigate if behavioral and physiological differences between pups of the same litter persist until after independence and influence development long-lasting, (2) to determine the potential plasticity in response to changes in the early within-family environment by cross-fostering pups either to the same, a lower, or a higher size rank in a foster-family. We measured three behavioral traits (number of interactions with a novel object, distance moved in an open field, struggle docility) and two physiological traits (resting metabolic rate and basal cortisol levels). We predicted that cross-fostering into a litter where pups occupy the same size rank would not change the expression of traits. Cross-fostering to a different size rank should not influence the expression of traits if repeatability measures indicate low plasticity. Alternatively, if the traits are plastic, animals should adjust trait expression to fit with the size rank occupied in the foster litter. Initial differences in struggle docility, distance moved in an open field and in baseline cortisol concentration between pups of different size-ranks did not remain stable beyond independence. In addition, we found remarkable plasticity of the measured traits in response to cross-fostering to the same, a smaller or larger size-rank, suggesting that differences between pups are more the result of social constraints leading to adaptive shaping of individual phenotypes within a family. We also found a significant influence of the cross-fostering procedure itself. Cross-fostered individuals were less bold, grew slower and showed elevated resting metabolic rates. This finding suggests a cautious interpretation of previous cross-fostering studies and stresses the need for proper control groups to reliably separate the effect of cross-fostering per se from those induced by an experimental treatment.
Collapse
Affiliation(s)
- Sabine Kraus
- Department of Animal Behaviour, Bielefeld University, Bielefeld, Germany
| | - Fritz Trillmich
- Department of Animal Behaviour, Bielefeld University, Bielefeld, Germany
| | - Anja Guenther
- Department of Animal Behaviour, Bielefeld University, Bielefeld, Germany.,Max Planck Institute for Evolutionary Biology, Plön, Germany
| |
Collapse
|
167
|
Day DB, Collett BR, Barrett ES, Bush NR, Swan SH, Wang C, Sathyanarayana S. Prenatal sex hormones and behavioral outcomes in children. Psychoneuroendocrinology 2020; 113:104547. [PMID: 31901731 PMCID: PMC7759302 DOI: 10.1016/j.psyneuen.2019.104547] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 12/12/2019] [Accepted: 12/12/2019] [Indexed: 01/07/2023]
Abstract
Abnormal sex hormone levels in utero have been associated with child behavioral problems, but it is unclear if normal variation in prenatal sex hormones is associated with subsequent behavior in childhood. We assessed maternal sex hormones, including serum estrone (E1), estradiol (E2), estriol (E3), free testosterone (FT), and total testosterone (TT), during early pregnancy (gestational week 6-21 (mean = 11.1)) and evaluated child behavior at ages 4-5 using the Behavioral Assessment System for Children (BASC-2) and Social Responsiveness Scale (SRS-2) in 404 mother/child pairs (211 girls, 193 boys) within The Infant Development and Environment Study, a multi-site pregnancy cohort study. Associations between hormones and composite scores were evaluated using multiple linear regressions in both sexes combined, and separate models assessed effect modification by sex with the addition of interaction terms. A 10-fold increase in maternal FT or TT was associated in both sexes with a 4.3-point (95 % CI: 0.5, 8.2) or 4.4-point (0.8, 8.0) higher BASC-2 internalizing composite T score, respectively. In addition, a 10-fold increase in FT or TT was associated with a 3.8-point (0.04, 7.5) or 4.0-point (0.5, 7.5) higher behavioral symptoms index composite score. In models evaluating effect modification by sex, a 10-fold increase in E1 was associated with a 4.3-point (1.2, 7.4) decrease in adaptive skills composite score in girls only (interaction p = 0.04). We observed associations between testosterone and internalizing behaviors and behavioral symptoms index in both sexes, as well as a female-specific association between E1 and adaptive skills. Sex hormones during pregnancy may play a key role in influencing later-life behavior, and additional studies should further examine different periods of susceptibility to hormonal signals.
Collapse
Affiliation(s)
- Drew B Day
- Seattle Children's Research Institute, Seattle, WA, United States.
| | - Brent R Collett
- Seattle Children’s Research Institute, Seattle, WA,University of Washington, Seattle, WA
| | | | - Nicole R Bush
- University of California, San Francisco, San Francisco, CA
| | - Shanna H Swan
- Icahn School of Medicine at Mount Sinai, New York, NY
| | - Christina Wang
- Lundquist Institute, Harbor-UCLA Medical Center, Torrance, CA
| | - Sheela Sathyanarayana
- Seattle Children’s Research Institute, Seattle, WA,University of Washington, Seattle, WA
| | | |
Collapse
|
168
|
Early menarche as a risk factor for suicidal ideation in girls: The Korea youth risk behavior web-based survey. Psychiatry Res 2020; 285:112706. [PMID: 31810746 DOI: 10.1016/j.psychres.2019.112706] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Revised: 10/07/2019] [Accepted: 11/24/2019] [Indexed: 10/25/2022]
Abstract
Puberty, at which point girls experience menarche, is a biologically and psychologically unstable period. This study investigated the association between early menarche and suicidal ideation in girls. This study analyzed data from approximately 35,000 girls from the Korea Youth Risk Behavior Web-Based Survey every year from 2011 to 2015. The odds ratios of suicidal ideation were compared between the early and average menarche groups. Generally, the odds ratios of suicidal ideation in girls with early menarche were significantly higher than those with average menarche.
Collapse
|
169
|
Köllner MG, Bleck K. Exploratory Evidence of Sex-Dimorphic Associations of the Ulna-to-Fibula Ratio, a Potential Marker of Pubertal Sex Steroid Exposure, with the Implicit Need for Power. ADAPTIVE HUMAN BEHAVIOR AND PHYSIOLOGY 2020. [DOI: 10.1007/s40750-020-00130-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Abstract
Objectives
We propose a novel marker of pubertal organizing hormone effects on the brain, long bone length, and assess its relationships to implicit motives, especially the implicit need for power (nPower).
Methods
In a partly exploratory approach, we tested 126 participants (after exclusions; 53 men, 73 women), in a cross-sectional design using the Picture-Story Exercise (nPower, activity inhibition), standard anthropometric measurements (BMI, height), and calipers to assess bone length of the ulna and fibula.
Results
Results indicated that a sex-dimorphic (d = 0.55) Ulna-to-Fibula Ratio (UFR), which is independent of body height, best captures the variance in our data. While we did not find bivariate relationships between long bone length and nPower, a sex-dimorphic interaction of nPower and activity inhibition on UFR-asymmetry (UFRr-l; right versus left UFR) emerged. High UFRr-l scores were related to the inhibited power motive (high nPower, high activity inhibition) in men, while for women the pattern was (non-significantly) reversed. In addition, UFR was predicted by a sex-dimorphic effect of nPower, with low UFR scores being associated with a higher nPower in men and a tendency for high UFR scores being related to lower nPower in women.
Conclusions
We discuss our results regarding UFR’s potential as a sex-dimorphic marker of the organizing effects of pubertal steroid hormones on the motivational brain beyond hand and face parameters routinely used in current research. Finally, we examine how our findings fit recent results obtained for the relationship between 2D:4D digit ratio or facial width-to-height ratio and nPower.
Collapse
|
170
|
Hoekzema E, Tamnes CK, Berns P, Barba-Müller E, Pozzobon C, Picado M, Lucco F, Martínez-García M, Desco M, Ballesteros A, Crone EA, Vilarroya O, Carmona S. Becoming a mother entails anatomical changes in the ventral striatum of the human brain that facilitate its responsiveness to offspring cues. Psychoneuroendocrinology 2020; 112:104507. [PMID: 31757430 DOI: 10.1016/j.psyneuen.2019.104507] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 10/31/2019] [Accepted: 11/01/2019] [Indexed: 10/25/2022]
Abstract
In mothers, offspring cues are associated with a powerful reinforcing value that motivates maternal care. Animal studies show that this is mediated by dopamine release into the nucleus accumbens, a core component of the brain's reward system located in the ventral striatum (VStr). The VStr is also known to respond to infant signals in human mothers. However, it is unknown whether pregnancy modifies the anatomy or functionality of this structure, and whether such modifications underlie its strong reactivity to offspring cues. Therefore, we analyzed structural and functional neuroimaging data from a unique pre-conception prospective cohort study involving first-time mothers investigated before and after their pregnancy as well as nulliparous control women scanned at similar time intervals. First, we delineated the anatomy of the VStr in each subject's neuroanatomical space and examined whether there are volumetric changes in this structure across sessions. Then, we tested if these changes could predict the mothers' brain responses to visual stimuli of their infants. We found decreases in the right VStr and a trend for left VStr reductions in the women who were pregnant between sessions compared to the women who were not. Furthermore, VStr volume reductions across pregnancy were associated with infant-related VStr responses in the postpartum period, with stronger volume decreases predicting stronger functional activation to offspring cues. These findings provide the first indications that the transition to motherhood renders anatomical adaptations in the VStr that promote the strong responsiveness of a mother's reward circuit to cues of her infant.
Collapse
Affiliation(s)
- Elseline Hoekzema
- Brain and Development Research Center, Leiden University, Leiden, the Netherlands; Leiden Institute for Brain and Cognition (LIBC), Leiden University, Leiden, the Netherlands.
| | - Christian K Tamnes
- PROMENTA Research Center, Department of Psychology, University of Oslo, Oslo, Norway; NORMENT, Division of Mental Health and Addiction, Oslo University Hospital & Institute of Clinical Medicine, University of Oslo, Oslo, Norway; Department of Psychiatry, Diakonhjemmet Hospital, Oslo, Norway
| | - Puck Berns
- Brain and Development Research Center, Leiden University, Leiden, the Netherlands; Leiden Institute for Brain and Cognition (LIBC), Leiden University, Leiden, the Netherlands
| | - Erika Barba-Müller
- Unitat de Recerca en Neurociència Cognitiva, Departament de Psiquiatria i Medicina Legal, Universitat Autònoma de Barcelona, Barcelona, Spain
| | | | - Marisol Picado
- Unitat de Recerca en Neurociència Cognitiva, Departament de Psiquiatria i Medicina Legal, Universitat Autònoma de Barcelona, Barcelona, Spain
| | | | - Magdalena Martínez-García
- Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain; Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Madrid, Spain
| | - Manuel Desco
- Departamento de Bioingeniería e Ingeniería Aeroespacial, Universidad Carlos III de Madrid, Spain; Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain; Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Madrid, Spain; Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), Spain
| | | | - Eveline A Crone
- Brain and Development Research Center, Leiden University, Leiden, the Netherlands; Leiden Institute for Brain and Cognition (LIBC), Leiden University, Leiden, the Netherlands
| | - Oscar Vilarroya
- Unitat de Recerca en Neurociència Cognitiva, Departament de Psiquiatria i Medicina Legal, Universitat Autònoma de Barcelona, Barcelona, Spain; Fundació IMIM, Barcelona, Spain
| | - Susanna Carmona
- Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain; Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Madrid, Spain; Departamento de Bioingeniería e Ingeniería Aeroespacial, Universidad Carlos III de Madrid, Spain
| |
Collapse
|
171
|
Smith BL, Laaker CJ, Lloyd KR, Hiltz AR, Reyes TM. Adolescent microglia play a role in executive function in male mice exposed to perinatal high fat diet. Brain Behav Immun 2020; 84:80-89. [PMID: 31765789 PMCID: PMC8634520 DOI: 10.1016/j.bbi.2019.11.010] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Revised: 11/09/2019] [Accepted: 11/17/2019] [Indexed: 12/20/2022] Open
Abstract
In humans, excessive gestational weight gain during pregnancy is associated with an increased risk for executive function deficits in the offspring. Our previous work has confirmed this finding in mice, as offspring from dams fed a 60% high fat (HF) diet during breeding, gestation, and lactation demonstrate impulsive-like behavior in the 5 choice serial reaction time task (5CSRTT). Because the prefrontal cortex (PFC), which plays a key role in executive function, undergoes substantial postnatal adolescent pruning and microglia are actively involved in synaptic refinement, we hypothesized that microglia may play a role in mediating changes in brain development after maternal HF diet, with a specific focus on microglial activity during adolescence. Therefore, we treated male and female offspring from HF or control diet (CD) dams with PLX3397-formulated diet (PLX) to ablate microglia during postnatal days 23-45. After PLX removal and microglial repopulation, adult mice underwent testing to evaluate executive function. Adolescent PLX treatment did increase the control male dropout rate in learning the basic FR1 task, but otherwise had a minimal effect on behavior in control offspring. In males, HF offspring learned faster and performed better on a simple operant task (fixed ratio 1) without an effect of PLX. However, in HF offspring this increase in FR1 responding was associated with more impulsive errors in the 5CSRTT while PLX eliminated this association and decreased impulsive errors specifically in HF offspring. This suggests that adolescent PLX treatment improves executive function and particularly impulsive behavior in adult male HF offspring, without an overall effect of perinatal diet. In females, maternal HF diet impaired reversal learning but PLX had no effect on performance. We then measured gene expression in adult male PFC, nucleus accumbens (NAC), and amygdala (AMG), examining targets related to synaptic function, reward, and inflammation. Maternal HF diet increased PFC synaptophysin and AMG psd95 expression. PFC synaptophysin expression was correlated with more impulsive errors in the 5CSRTT in the HF offspring only and PLX treatment eliminated this correlation. These data suggest that adolescent microglia may play a critical role in mediating executive function after perinatal high fat diet in males.
Collapse
Affiliation(s)
- Brittany L Smith
- Department of Pharmacology & Systems Physiology, University of Cincinnati, Cincinnati, OH, USA
| | - Collin J Laaker
- Department of Pharmacology & Systems Physiology, University of Cincinnati, Cincinnati, OH, USA
| | - Kelsey R Lloyd
- Department of Pharmacology & Systems Physiology, University of Cincinnati, Cincinnati, OH, USA
| | - Adam R Hiltz
- Department of Pharmacology & Systems Physiology, University of Cincinnati, Cincinnati, OH, USA
| | - Teresa M Reyes
- Department of Pharmacology & Systems Physiology, University of Cincinnati, Cincinnati, OH, USA.
| |
Collapse
|
172
|
Muñoz-Reyes JA, Polo P, Valenzuela N, Pavez P, Ramírez-Herrera O, Figueroa O, Rodriguez-Sickert C, Díaz D, Pita M. The Male Warrior Hypothesis: Testosterone-related Cooperation and Aggression in the Context of Intergroup Conflict. Sci Rep 2020; 10:375. [PMID: 31942026 PMCID: PMC6962424 DOI: 10.1038/s41598-019-57259-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Accepted: 12/20/2019] [Indexed: 12/28/2022] Open
Abstract
The Male Warrior Hypothesis (MWH) establishes that men's psychology has been shaped by inter-group competition to acquire and protect reproductive resources. In this context, sex-specific selective pressures would have favored cooperation with the members of one's group in combination with hostility towards outsiders. We investigate the role of developmental testosterone, as measured indirectly through static markers of prenatal testosterone (2D:4D digit ratio) and pubertal testosterone (body musculature and facial masculinity), on both cooperation and aggressive behavior in the context of intergroup conflict among men. Supporting the MWH, our results show that the intergroup conflict scenario promotes cooperation within group members and aggression toward outgroup members. Regarding the hormonal underpinnings of this phenomenon, we find that body musculature is positively associated with aggression and cooperation, but only for cooperation when context (inter-group competition) is taken into account. Finally, we did not find evidence that the formidability of the group affected individual rates of aggression or cooperation, controlling for individual characteristics.
Collapse
Affiliation(s)
- J A Muñoz-Reyes
- Laboratorio de Comportamiento Animal y Humano, Centro de Estudios Avanzados, Universidad de Playa Ancha, Valparaíso, Chile.
| | - P Polo
- Laboratorio de Comportamiento Animal y Humano, Centro de Estudios Avanzados, Universidad de Playa Ancha, Valparaíso, Chile
| | - N Valenzuela
- Laboratorio de Comportamiento Animal y Humano, Centro de Estudios Avanzados, Universidad de Playa Ancha, Valparaíso, Chile.,Departamento de Ciencias Biológicas, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Viña del Mar, Chile
| | - P Pavez
- Laboratorio de Comportamiento Animal y Humano, Centro de Estudios Avanzados, Universidad de Playa Ancha, Valparaíso, Chile
| | - O Ramírez-Herrera
- Laboratorio de Comportamiento Animal y Humano, Centro de Estudios Avanzados, Universidad de Playa Ancha, Valparaíso, Chile
| | - O Figueroa
- Laboratorio de Comportamiento Animal y Humano, Centro de Estudios Avanzados, Universidad de Playa Ancha, Valparaíso, Chile.,Centro de Investigación en Complejidad Social, Facultad de Gobierno, Universidad del Desarrollo, Santiago, Chile
| | - C Rodriguez-Sickert
- Centro de Investigación en Complejidad Social, Facultad de Gobierno, Universidad del Desarrollo, Santiago, Chile
| | - D Díaz
- Facultad de Ciencias Económicas, Universidad de Chile, Santiago, Chile
| | - M Pita
- Departamento de Biología, Universidad Autónoma de Madrid, Madrid, Spain
| |
Collapse
|
173
|
Hochberg Z, Konner M. Emerging Adulthood, a Pre-adult Life-History Stage. Front Endocrinol (Lausanne) 2020; 10:918. [PMID: 31993019 PMCID: PMC6970937 DOI: 10.3389/fendo.2019.00918] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Accepted: 12/17/2019] [Indexed: 01/20/2023] Open
Abstract
The duration of human maturation has been underestimated; an additional 4-6-year pre-adult period of "emerging adulthood," should be included in models of human maturation. It is a period of brain maturation, learning about intimacy and mutual support, intensification of pre-existing friendships, family-oriented socialization, and the attainment of those social skills that are needed for mating and reproduction. We propose that emerging adulthood is a life-history stage that is a foundation of the high reproductive success of human beings. The period of emerging adulthood has an evolutionary context and developmental markers, and we present evidence that supports the idea that emerging adults require protection because they are still learning and maturing.
Collapse
Affiliation(s)
- Ze′ev Hochberg
- Faculty of Medicine, Technion Israel Institute of Technology, Haifa, Israel
| | - Melvin Konner
- Program in Neuroscience and Behavioral Biology, Emory University, Atlanta, GA, United States
| |
Collapse
|
174
|
Fuhrmann D, Simpson-Kent IL, Bathelt J, Kievit RA. A Hierarchical Watershed Model of Fluid Intelligence in Childhood and Adolescence. Cereb Cortex 2020; 30:339-352. [PMID: 31211362 PMCID: PMC7029679 DOI: 10.1093/cercor/bhz091] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 03/18/2019] [Accepted: 04/04/2019] [Indexed: 11/13/2022] Open
Abstract
Fluid intelligence is the capacity to solve novel problems in the absence of task-specific knowledge and is highly predictive of outcomes like educational attainment and psychopathology. Here, we modeled the neurocognitive architecture of fluid intelligence in two cohorts: the Centre for Attention, Leaning and Memory sample (CALM) (N = 551, aged 5-17 years) and the Enhanced Nathan Kline Institute-Rockland Sample (NKI-RS) (N = 335, aged 6-17 years). We used multivariate structural equation modeling to test a preregistered watershed model of fluid intelligence. This model predicts that white matter contributes to intermediate cognitive phenotypes, like working memory and processing speed, which, in turn, contribute to fluid intelligence. We found that this model performed well for both samples and explained large amounts of variance in fluid intelligence (R2CALM = 51.2%, R2NKI-RS = 78.3%). The relationship between cognitive abilities and white matter differed with age, showing a dip in strength around ages 7-12 years. This age effect may reflect a reorganization of the neurocognitive architecture around pre- and early puberty. Overall, these findings highlight that intelligence is part of a complex hierarchical system of partially independent effects.
Collapse
Affiliation(s)
- Delia Fuhrmann
- MRC Cognition and Brain Sciences Unit, University of Cambridge, Cambridge, UK
| | - Ivan L Simpson-Kent
- MRC Cognition and Brain Sciences Unit, University of Cambridge, Cambridge, UK
| | - Joe Bathelt
- MRC Cognition and Brain Sciences Unit, University of Cambridge, Cambridge, UK
| | - Rogier A Kievit
- MRC Cognition and Brain Sciences Unit, University of Cambridge, Cambridge, UK
| |
Collapse
|
175
|
Beking T, Burke SM, Geuze RH, Staphorsius AS, Bakker J, Groothuis AGG, Kreukels BPC. Testosterone effects on functional amygdala lateralization: A study in adolescent transgender boys and cisgender boys and girls. Psychoneuroendocrinology 2020; 111:104461. [PMID: 31630051 DOI: 10.1016/j.psyneuen.2019.104461] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Revised: 09/16/2019] [Accepted: 09/18/2019] [Indexed: 01/05/2023]
Abstract
The influence of testosterone on the development of human brain lateralization has been subject of debate for a long time, partly because studies investigating this are necessarily mostly correlational. In the present study we used a quasi-experimental approach by assessing functional brain lateralization in trans boys (female sex assigned at birth, diagnosed with Gender Dysphoria, n = 21) before and after testosterone treatment, and compared these results to the functional lateralization of age-matched control groups of cisgender boys (n = 20) and girls (n = 21) around 16 years of age. The lateralization index of the amygdala was determined with functional magnetic resonance imaging (fMRI) during an emotional face matching task with angry and fearful faces, as the literature indicates that boys show more activation in the right amygdala than girls during the perception of emotional faces. As expected, the lateralization index in trans boys shifted towards the right amygdala after testosterone treatment, and the cumulative dose of testosterone treatment correlated significantly with amygdala lateralization after treatment. However, we did not find any significant group differences in lateralization and endogenous testosterone concentrations predicted rightward amygdala lateralization only in the cis boys, but not in cis girls or trans boys. These inconsistencies may be due to sex differences in sensitivity to testosterone or its metabolites, which would be a worthwhile course for future studies.
Collapse
Affiliation(s)
- T Beking
- University of Groningen, Department Clinical & Developmental Neuropsychology. Grote Kruisstraat 2/1, 9712 TS, Groningen, the Netherlands.
| | - S M Burke
- Leiden University, Brain & Development Research Centre, Department of Developmental and Educational Psychology. Wassenaarseweg 52, 2333 AK, Leiden, the Netherlands.
| | - R H Geuze
- University of Groningen, Department Clinical & Developmental Neuropsychology. Grote Kruisstraat 2/1, 9712 TS, Groningen, the Netherlands.
| | - A S Staphorsius
- Amsterdam University Medical Centers, Location VU, Department of Internal Medicine, Center of Expertise on Gender Dysphoria. PO Box 7057, 1007 MB, Amsterdam, the Netherlands.
| | - J Bakker
- Liège University, GIGA Neurosciences, Avenue Hippocrate 15, B36, 4000, Liège, Belgium.
| | - A G G Groothuis
- University of Groningen, Groningen Institute for Evolutionary Life Sciences, Nijenborgh 7, 9747 AG, Groningen, the Netherlands.
| | - B P C Kreukels
- Amsterdam University Medical Centers, Location VU, Department of Medical Psychology, Center of Expertise on Gender Dysphoria, PO Box 7057, 1007 MB, Amsterdam, the Netherlands.
| |
Collapse
|
176
|
Arakawa H. Sensorimotor developmental factors influencing the performance of laboratory rodents on learning and memory. Behav Brain Res 2019; 375:112140. [PMID: 31401145 PMCID: PMC6741784 DOI: 10.1016/j.bbr.2019.112140] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 07/31/2019] [Accepted: 08/01/2019] [Indexed: 02/08/2023]
Abstract
Behavioral studies in animal models have advanced our knowledge of brain function and the neural mechanisms of human diseases. Commonly used laboratory rodents, such as mice and rats, provide a useful tool for studying the behaviors and mechanisms associated with learning and memory processes which are cooperatively regulated by multiple underlying factors, including sensory and motor performance and emotional/defense innate components. Each of these factors shows unique ontogeny and governs the sustainment of behavioral performance in learning tasks, and thus, understanding the integrative processes of behavioral development are crucial in the accurate interpretation of the functional meaning of learning and memory behaviors expressed in commonly employed behavioral test paradigms. In this review, we will summarize the major findings in the developmental processes of rodent behavior on the basis of the emergence of fundamental components for sustaining learning and memory behaviors. Briefly, most sensory modalities (except for vision) and motor abilities are functional at the juvenile stage, in which several defensive components, including active and passive defensive strategies and risk assessment behavior, emerge. Sex differences are detectable from the juvenile stage through adulthood and are considerable factors that influence behavioral tests. The test paradigms addressed in this review include associative learning (with an emphasis on fear conditioning), spatial learning, and recognition. This basic background information will aid in accurately performing behavioral studies in laboratory rodents and will therefore contribute to reducing inappropriate interpretations of behavioral data and further advance research on learning and memory in rodent models.
Collapse
Affiliation(s)
- Hiroyuki Arakawa
- Department of Anatomy and Neurobiology, University of Maryland School of Medicine, 20 Penn St. HSF2/S251, Baltimore, MD, 21201, USA.
| |
Collapse
|
177
|
Effects of intraperitoneal and intracerebroventricular injections of oxytocin on social and emotional behaviors in pubertal male mice. Physiol Behav 2019; 212:112701. [DOI: 10.1016/j.physbeh.2019.112701] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 09/27/2019] [Accepted: 10/04/2019] [Indexed: 12/20/2022]
|
178
|
Li M, Zhao C, Xie S, Liu X, Zhao Q, Zhang Z, Gong G. Effects of hypogonadism on brain development during adolescence in girls with Turner syndrome. Hum Brain Mapp 2019; 40:4901-4911. [PMID: 31389646 DOI: 10.1002/hbm.24745] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Revised: 07/18/2019] [Accepted: 07/21/2019] [Indexed: 01/19/2023] Open
Abstract
Gonadal steroids play an important role in brain development, particularly during puberty. Girls with Turner syndrome (TS), a genetic disorder characterized by the absence of all or part of the second X chromosome, mostly present a loss of ovarian function and estrogen deficiency, as well as neuroanatomical abnormalities. However, few studies have attempted to isolate the indirect effects of hormones from the direct genetic effects of X chromosome insufficiency. Brain structural (i.e., gray matter [GM] morphology and white matter [WM] connectivity) and functional phenotypes (i.e., resting-state functional measures) were investigated in 23 adolescent girls with TS using multimodal MRI to assess the role of hypogonadism in brain development in TS. Specifically, all girls with TS were divided into a hormonally subnormal group and an abnormal subgroup according to their serum follicle-stimulating hormone (FSH) levels, with the karyotypes approximately matched between the two groups. Statistical analyses revealed significant effects of the "group-by-age" interaction on GM volume around the left medial orbitofrontal cortex and WM diffusion parameters around the bilateral corticospinal tract, anterior thalamic radiation, left superior longitudinal fasciculus, and cingulum bundle, but no significant "group-by-age" or group differences were observed in resting-state functional measures. Based on these findings, estrogen deficiency has a nontrivial impact on the development of the brain structure during adolescence in girls with TS. Our present study provides novel insights into the mechanism by which hypogonadism influences brain development during adolescence in girls with TS, and highlights the important role of estrogen replacement therapy in treating TS.
Collapse
Affiliation(s)
- Min Li
- Department of Pediatrics, China-Japan Friendship Hospital, Beijing, China
| | - Chenxi Zhao
- State Key Laboratory of Cognitive Neuroscience and Learning &IDG/McGovern Institute for Brain Research, Beijing Normal University, Beijing, China
| | - Sheng Xie
- Department of Radiology, China-Japan Friendship Hospital, Beijing, China
| | - Xiwei Liu
- Department of Radiology, China-Japan Friendship Hospital, Beijing, China
| | - Qiuling Zhao
- Department of Pediatrics, China-Japan Friendship Hospital, Beijing, China
| | - Zhixin Zhang
- Department of Pediatrics, China-Japan Friendship Hospital, Beijing, China
| | - Gaolang Gong
- State Key Laboratory of Cognitive Neuroscience and Learning &IDG/McGovern Institute for Brain Research, Beijing Normal University, Beijing, China
| |
Collapse
|
179
|
Engel ML, Gunnar MR. The development of stress reactivity and regulation during human development. INTERNATIONAL REVIEW OF NEUROBIOLOGY 2019; 150:41-76. [PMID: 32204834 DOI: 10.1016/bs.irn.2019.11.003] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Adverse experiences during childhood can have long-lasting impacts on physical and mental health. At the heart of most theories of how these effects are transduced into health impacts is the activity of stress-mediating systems, most notably the hypothalamic-pituitary-adrenocortical (HPA) axis. Here we review the anatomy and physiology of the axis, models of stress and development, the development of the axis prenatally through adolescence, the role of experience and sensitive periods in shaping its regulation, the social regulation of the axis at different points in development, and finally conclude with suggestions for future research. We conclude that it is clear that early adversity sculpts the stress system, but we do not understand which dimensions have the most impact and at what points in early development. It is equally clear that secure attachment relationships buffer the developing stress system; however, the mechanisms of social buffering and how these may change with development are not yet clear. Another critical issue that is not understood is when and for whom adversity will result in hypo- vs hyperactivity of stress-mediating systems. These and other issues are important for advancing our understanding of how early adversity "gets under the skin" and shapes human physical and mental health.
Collapse
Affiliation(s)
- Melissa L Engel
- Department of Psychology, Emory University, Atlanta, GA, United States
| | - Megan R Gunnar
- Institute of Child Development, University of Minnesota, Minneapolis, MN, United States.
| |
Collapse
|
180
|
Abstract
PURPOSE OF REVIEW Females experience eating disorders at substantially higher rates than males. Although sociocultural factors have traditionally been thought to underlie this sex disparity, accumulating evidence implicates differential exposure to gonadal hormones early in life. Gonadal hormones also impact within-sex variability in disordered eating, helping to explain why not all women develop an eating disorder, and some men do. We review recent findings regarding these gonadal hormone effects and their implications for the etiology of eating disorders. RECENT FINDINGS Males are exposed to significantly higher testosterone levels than females perinatally, and this exposure appears to protect against later binge eating in males relative to females. Within-sex, higher estradiol levels among females and higher testosterone levels among males appear to be protective. Progesterone exhibits minimal direct phenotypic effects on disordered eating but appears to counteract the protective effects of estrogen in adult females. Importantly, gonadal hormone effects may be moderated by psychosocial factors. SUMMARY Evidence suggests that gonadal hormones play a critical role in the etiology of disordered eating. Overall, higher testosterone and estrogen appear to be protective across development. Additional research is needed to identify mechanisms underlying these effects and further explore interactions between hormonal and psychosocial risk.
Collapse
|
181
|
Koss KJ. Understanding the Neurobiological Implications of Maltreatment: A Commentary on the Special Issue. CHILD MALTREATMENT 2019; 24:452-457. [PMID: 31426661 DOI: 10.1177/1077559519869843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
A large body of evidence demonstrates the deleterious effects of childhood maltreatment that span across multiple levels of functioning and throughout development. This commentary highlights the important research in this special issue of Child Maltreatment that advances our understanding of the neural and physiological implications of maltreatment. Throughout, the commentary calls attention to critical issues in the study of maltreatment and neurobiological processes for future work in this area.
Collapse
Affiliation(s)
- Kalsea J Koss
- Department of Human Development and Family Science, University of Georgia, Athens, GA, USA
| |
Collapse
|
182
|
Sigl-Glöckner J, Maier E, Takahashi N, Sachdev R, Larkum M, Brecht M. Effects of Sexual Experience and Puberty on Mouse Genital Cortex revealed by Chronic Imaging. Curr Biol 2019; 29:3588-3599.e4. [PMID: 31630949 DOI: 10.1016/j.cub.2019.08.062] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Revised: 08/09/2019] [Accepted: 08/22/2019] [Indexed: 12/17/2022]
Abstract
The topographic map in layer 4 of somatosensory cortex is usually specified early postnatally and stable thereafter. Genital cortex, however, undergoes a sex-hormone- and sexual-touch-dependent pubertal expansion. Here, we image pubertal development of genital cortex in Scnn1a-Tg3-Cre mice, where transgene expression has been shown to be restricted to layer 4 neurons with primary sensory cortex identity. Interestingly, during puberty, the number of Scnn1a+ neurons roughly doubled within genital cortex. The increase of Scnn1a+ neurons was gradual and rapidly advanced by initial sexual experience. Neurons that gained Scnn1a expression comprised stellate and pyramidal neurons in layer 4. Unlike during neonatal development, pyramids did not retract their apical dendrites during puberty. Calcium imaging revealed stronger genital-touch responses in Scnn1a+ neurons in males versus females and a developmental increase in responsiveness in females. The first sexual interaction is a unique physical experience that often creates long-lasting memories. We suggest such experience uniquely alters somatosensory body maps.
Collapse
Affiliation(s)
- Johanna Sigl-Glöckner
- Bernstein Center for Computational Neuroscience Berlin, Humboldt-Universität zu Berlin, Philippstr. 13, Haus 6, 10115 Berlin, Germany
| | - Eduard Maier
- Bernstein Center for Computational Neuroscience Berlin, Humboldt-Universität zu Berlin, Philippstr. 13, Haus 6, 10115 Berlin, Germany
| | - Naoya Takahashi
- Institute for Biology, Humboldt-Universität zu Berlin, Charitéplatz 1, 10437 Berlin, Germany
| | - Robert Sachdev
- Institute for Biology, Humboldt-Universität zu Berlin, Charitéplatz 1, 10437 Berlin, Germany
| | - Matthew Larkum
- Institute for Biology, Humboldt-Universität zu Berlin, Charitéplatz 1, 10437 Berlin, Germany
| | - Michael Brecht
- Bernstein Center for Computational Neuroscience Berlin, Humboldt-Universität zu Berlin, Philippstr. 13, Haus 6, 10115 Berlin, Germany.
| |
Collapse
|
183
|
Beauchamp KG, Shaffer KA, Fisher PA, Berkman ET. Brief, computerized inhibitory control training to leverage adolescent neural plasticity: A pilot effectiveness trial. APPLIED NEUROPSYCHOLOGY. CHILD 2019; 8:366-382. [PMID: 30265572 PMCID: PMC6438765 DOI: 10.1080/21622965.2018.1495567] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Revised: 06/27/2018] [Accepted: 06/28/2018] [Indexed: 10/28/2022]
Abstract
Adolescence is a time of heightened neural plasticity. Many brain networks show protracted development through this period, such as those underlying inhibitory control (IC), a neurocognitive skill implicated in risk-taking and therefore relevant to public health. Although IC appears to be trainable in adults and young children, whether and how IC may be malleable during adolescence is not fully understood. In this pilot RCT, we tested the effects of a school-based IC training paradigm (versus active control) on IC performance and neural function in adolescents (N = 19) aged 15 to 17 recruited from a low-income school district. We also examined the extent to which training effects transferred to a nontrained IC task and real-world risk behavior, as well as potential moderation effects by early adversity exposure. Training altered brain function related to attention during IC preparation and implementation, though it did not alter IC performance in the training group compared to the control group. There was limited evidence of training transfer. Results have implications for translational neuroscience research in adolescents.
Collapse
Affiliation(s)
- Kathryn G Beauchamp
- Department of Psychology, University of Oregon , Eugene , Oregon , USA
- Center for Translational Neuroscience, University of Oregon , Eugene , Oregon , USA
| | - Kelsey A Shaffer
- Department of Psychological Sciences, College of William and Mary , Williamsburg , Virginia , USA
| | - Philip A Fisher
- Department of Psychology, University of Oregon , Eugene , Oregon , USA
- Center for Translational Neuroscience, University of Oregon , Eugene , Oregon , USA
| | - Elliot T Berkman
- Department of Psychology, University of Oregon , Eugene , Oregon , USA
- Center for Translational Neuroscience, University of Oregon , Eugene , Oregon , USA
| |
Collapse
|
184
|
Probiotic consumption during puberty mitigates LPS-induced immune responses and protects against stress-induced depression- and anxiety-like behaviors in adulthood in a sex-specific manner. Brain Behav Immun 2019; 81:198-212. [PMID: 31212008 DOI: 10.1016/j.bbi.2019.06.016] [Citation(s) in RCA: 95] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2019] [Revised: 05/31/2019] [Accepted: 06/12/2019] [Indexed: 12/20/2022] Open
Abstract
Puberty/adolescence is a significant period of development and a time with a high emergence of psychiatric disorders. During this period, there is increased neuroplasticity and heightened vulnerability to stress and inflammation. The gut microbiome regulates stress and inflammatory responses and can alter brain chemistry and behaviour. However, the role of the gut microbiota during pubertal development remains largely uninvestigated. The current study examined gut manipulation with probiotics during puberty in CD1 mice on lipopolysaccharide (LPS)-induced immune responses and enduring effects on anxiety- and depression-like behaviours and stress-reactivity in adulthood. Probiotics reduced LPS-induced sickness behaviour at 12 h in females and at 48 h following LPS treatment in males. Probiotics also reduced LPS-induced changes in body weight at 48 h post-treatment in females. Probiotic treatment also prevented LPS-induced increases in pro- and anti-inflammatory peripheral cytokines at 8 h following LPS treatment, reduced central cytokine mRNA expression in the hypothalamus, hippocampus and PFC, and prevented LPS-induced changes to in the gut microbiota. A single exposure to LPS during puberty resulted in enduring depression-like behaviour in female mice, and anxiety-like behaviour in male mice in adulthood. However, pubertal exposure to probiotics prevented enduring LPS-induced depression-like behaviour in females and anxiety-like behaviors in males. Moreover, probiotics altered toll-like receptor-4 activity in the paraventricular nucleus of the hypothalamus (PVN) in males in response to a novel stressor in adulthood. Our results suggest that the gut microbiome plays an important role in pubertal neurodevelopment. These findings indicate that exposure to probiotics during puberty mitigates inflammation and decreases stress-induced vulnerabilities to emotional behaviours later in life, in a sex-specific manner.
Collapse
|
185
|
Toenders YJ, van Velzen LS, Heideman IZ, Harrison BJ, Davey CG, Schmaal L. Neuroimaging predictors of onset and course of depression in childhood and adolescence: A systematic review of longitudinal studies. Dev Cogn Neurosci 2019; 39:100700. [PMID: 31426010 PMCID: PMC6969367 DOI: 10.1016/j.dcn.2019.100700] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 08/05/2019] [Accepted: 08/05/2019] [Indexed: 11/24/2022] Open
Abstract
Major depressive disorder (MDD) often emerges during adolescence with detrimental effects on development as well as lifetime consequences. Identifying neurobiological markers that are associated with the onset or course of this disorder in childhood and adolescence is important for early recognition and intervention and, potentially, for the prevention of illness onset. In this systematic review, 68 longitudinal neuroimaging studies, from 34 unique samples, that examined the association of neuroimaging markers with onset or changes in paediatric depression published up to 1 February 2019 were examined. These studies employed different imaging modalities at baseline; structural magnetic resonance imaging (MRI), diffusion tensor imaging (DTI), functional MRI (fMRI) or electroencephalography (EEG). Most consistent evidence across studies was found for blunted reward-related (striatal) activity (fMRI and EEG) as a potential biological marker for both MDD onset and course. With regard to structural brain measures, the results were highly inconsistent, likely caused by insufficient power to detect complex mediating effects of genetic and environmental factors in small sample sizes. Overall, there were a limited number of samples, and confounding factors such as sex and pubertal development were often not considered, whereas these factors are likely to be relevant especially in this age range.
Collapse
Affiliation(s)
- Yara J Toenders
- Orygen, The National Centre of Excellence in Youth Mental Health, 35 Poplar Road, Parkville, Victoria 3052, Australia; Centre for Youth Mental Health, The University of Melbourne, 35 Poplar Road, Parkville, Victoria 3052, Australia
| | - Laura S van Velzen
- Orygen, The National Centre of Excellence in Youth Mental Health, 35 Poplar Road, Parkville, Victoria 3052, Australia; Centre for Youth Mental Health, The University of Melbourne, 35 Poplar Road, Parkville, Victoria 3052, Australia
| | - Ivonne Z Heideman
- Orygen, The National Centre of Excellence in Youth Mental Health, 35 Poplar Road, Parkville, Victoria 3052, Australia
| | - Ben J Harrison
- Melbourne Neuropsychiatry Centre, Department of Psychiatry, The University of Melbourne & Melbourne Health, Level 3, Alan Gilbert Building, 161 Barry St, Carlton, Victoria 3053, Australia
| | - Christopher G Davey
- Orygen, The National Centre of Excellence in Youth Mental Health, 35 Poplar Road, Parkville, Victoria 3052, Australia; Centre for Youth Mental Health, The University of Melbourne, 35 Poplar Road, Parkville, Victoria 3052, Australia
| | - Lianne Schmaal
- Orygen, The National Centre of Excellence in Youth Mental Health, 35 Poplar Road, Parkville, Victoria 3052, Australia; Centre for Youth Mental Health, The University of Melbourne, 35 Poplar Road, Parkville, Victoria 3052, Australia.
| |
Collapse
|
186
|
Carmichael O, Stuchlik P, Pillai S, Biessels GJ, Dhullipudi R, Madden-Rusnak A, Martin S, Hsia DS, Fonseca V, Bazzano L. High-Normal Adolescent Fasting Plasma Glucose Is Associated With Poorer Midlife Brain Health: Bogalusa Heart Study. J Clin Endocrinol Metab 2019; 104:4492-4500. [PMID: 31058974 PMCID: PMC6736207 DOI: 10.1210/jc.2018-02750] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Accepted: 04/30/2019] [Indexed: 12/24/2022]
Abstract
CONTEXT It is unclear how adolescent glycemic status relates to brain health in adulthood. OBJECTIVE To assess the association between adolescent fasting plasma glucose (FPG) and MRI-based brain measures in midlife. DESIGN Between 1973 and 1992, the Bogalusa Heart Study (BHS) collected FPG from children, 3 to 18 years old, and followed up between 1992 and 2018. Cognitive tests and brain MRI were collected in 2013 to 2016 and 2018. SETTING Observational longitudinal cohort study. PARTICIPANTS Of 1298 contacted BHS participants, 74 completed screening, and 50 completed MRI. MAIN OUTCOME MEASURES Mean FPG per participant at ages <20, 20 to 40, and over 40 years old; brain white matter hyperintensity (WMH) volume, gray matter volume, and functional MRI (fMRI) activation to a Stroop task; tests of logical and working memory, executive function, and semantic fluency. RESULTS At MRI, participants were middle aged (51.3 ± 4.4 years) and predominantly female (74%) and white (74%). Mean FPG was impaired for zero, two, and nine participants in pre-20, 20 to 40, and over-40 periods. The pre-20 mean FPG above the pre-20 median value (i.e., above 83.5 mg/dL) was associated with greater WMH volume [mean difference: 0.029% of total cranial volume, CI: (0.0059, 0.052), P = 0.015] and less fMRI activation [-1.41 units (-2.78, -0.05), P = 0.043] on midlife MRI compared with below-median mean FPG. In controlling for over-40 mean FPG status did not substantially modify the associations. Cognitive scores did not differ by pre-20 mean FPG. CONCLUSIONS High-normal adolescent FPG may be associated with preclinical brain changes in midlife.
Collapse
Affiliation(s)
- Owen Carmichael
- Pennington Biomedical Research Center, Baton Rouge, Louisiana
- Correspondence and Reprint Requests: Owen Carmichael, PhD, Pennington Biomedical Research Center, 6400 Perkins Road, Baton Rouge, Louisiana 70808. E-mail:
| | | | | | - Geert-Jan Biessels
- Department of Neurology, Brain Center Rudolf Magnus, University Medical Center Utrecht, University Utrecht, Utrecht, Netherlands
| | - Ram Dhullipudi
- Pennington Biomedical Research Center, Baton Rouge, Louisiana
| | | | - Shane Martin
- Pennington Biomedical Research Center, Baton Rouge, Louisiana
| | - Daniel S Hsia
- Pennington Biomedical Research Center, Baton Rouge, Louisiana
| | - Vivian Fonseca
- Section of Endocrinology, Tulane University Health Sciences Center, New Orleans, Louisiana
| | - Lydia Bazzano
- Department of Epidemiology, Tulane University School of Public Health and Tropical Medicine, New Orleans, Louisiana
| |
Collapse
|
187
|
Yohn CN, Ashamalla SA, Bokka L, Gergues MM, Garino A, Samuels BA. Social instability is an effective chronic stress paradigm for both male and female mice. Neuropharmacology 2019; 160:107780. [PMID: 31536736 DOI: 10.1016/j.neuropharm.2019.107780] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 09/11/2019] [Accepted: 09/14/2019] [Indexed: 10/26/2022]
Abstract
Despite stress-associated disorders having a higher incidence rate in females, preclinical research mainly focuses on males. Chronic stress paradigms, such as chronic social defeat and chronic corticosterone (CORT) administration, were mainly designed and validated in males and subsequent attempts to use these paradigms in females has demonstrated sex differences in the behavioral and HPA axis response to stress. Here, we assessed the behavioral response to chronic CORT exposure and developed a social stress paradigm, social instability stress (SIS), which exposes adult mice to unstable social hierarchies every 3 days for 7 weeks. Sex differences in response to chronic CORT emerged, with negative valence behaviors induced in CORT treated males, not females. SIS effectively induces negative valence behaviors in the open field, light dark, and novelty suppressed feeding tests, increases immobility in the forced swim test, and activates the hypothalamus-pituitary-adrenal (HPA) axis in both males and females. Importantly, while there were effects of estrous cycle on behavior, this variability did not impact the overall effects of SIS on behavior, suggesting estrous does not need to be tracked while utilizing SIS. Furthermore, the effects of SIS on negative valence behaviors were also reversed following chronic antidepressant treatment with fluoxetine (FLX) in both males and females. SIS also reduced adult hippocampal neurogenesis in female mice, while chronic FLX treatment increased adult hippocampal neurogenesis in both males and females. Overall, these data demonstrate that the SIS paradigm is an ethologically valid approach that effectively induces chronic stress in both adult male and adult female mice.
Collapse
Affiliation(s)
- Christine N Yohn
- Behavioral & Systems Neuroscience, Department of Psychology, Rutgers, The State University of New Jersey, 152 Frelinghuysen Rd, Piscataway, NJ, USA
| | - Sandra A Ashamalla
- Behavioral & Systems Neuroscience, Department of Psychology, Rutgers, The State University of New Jersey, 152 Frelinghuysen Rd, Piscataway, NJ, USA
| | - Leshya Bokka
- Behavioral & Systems Neuroscience, Department of Psychology, Rutgers, The State University of New Jersey, 152 Frelinghuysen Rd, Piscataway, NJ, USA
| | - Mark M Gergues
- Behavioral & Systems Neuroscience, Department of Psychology, Rutgers, The State University of New Jersey, 152 Frelinghuysen Rd, Piscataway, NJ, USA
| | - Alexander Garino
- Behavioral & Systems Neuroscience, Department of Psychology, Rutgers, The State University of New Jersey, 152 Frelinghuysen Rd, Piscataway, NJ, USA
| | - Benjamin A Samuels
- Behavioral & Systems Neuroscience, Department of Psychology, Rutgers, The State University of New Jersey, 152 Frelinghuysen Rd, Piscataway, NJ, USA.
| |
Collapse
|
188
|
Xie X, Liu P, Chen T, Wang Y, Liu X, Ye P, Xiang W, Yan Z. Influence of the hypothalamus-pituitary-gonadal axis reactivation and corresponding surging sex hormones on the amplitude of low-frequency oscillations in early pubertal girls: A resting state fMRI study. J Affect Disord 2019; 256:288-294. [PMID: 31200166 DOI: 10.1016/j.jad.2019.05.062] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2018] [Revised: 04/11/2019] [Accepted: 05/27/2019] [Indexed: 10/26/2022]
Abstract
BACKGROUND There has been a myriad of neuroimaging studies that have suggested that pubertal stages and sex steroid fluctuations contribute to pubertal brain maturation. Investigations on the influence of hypothalamus-pituitary-gonadal (HPG) axis reactivation and the correlated elevated sex hormones on brain maturation have not unraveled these interactions to date. Here, we aimed to explore the impact of the reactivated HPG axis on spontaneous brain activity changes, by analyzing the amplitude of low-frequency fluctuation (ALFF) in developing girls aged 8-11 years old. METHODS The gonadotropin-releasing hormone (GnRH) stimulation test was used to determine the HPG axis status and categorize subjects into two groups (HPG+ or HPG- group). Intelligence quotient (IQ) and the parent-rated Child Behavior Checklist (CBCL) were used to evaluate cognitive and behavioral performance. Two-sample t-tests were used to compare intergroup differences, the relations between brain areas' activities, age and hormonal levels were conducted by Pearson or Spearman correlation analyses. RESULTS Compared with the HPG- group, the HPG+ group showed decreased ALFF values in the left superior temporal gyrus (STG) but increased ALFF values in the right superior frontal gyrus (SFG). In addition, in the HPG+ group, prolactin (PRL) levels were positively correlated with ALFF values in the right SFG, and there was significant negative correlation between ALFF values in the left STG and CBCL activities scores. LIMITATIONS Due to the cross-sectional design of the present study, further study is needed to determine the relationships between age, reawakening of the HPG axis and related sex hormones and spontaneous brain activity change. CONCLUSIONS These findings suggested that the reactivated HPG axis and elevated PRL level could affect changes in brain activity and this effect may be the neuroendocrine basis of mood, cognition, and social behavior changes in early pubertal girls.
Collapse
Affiliation(s)
- Xiaoling Xie
- Department of Radiology, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Peining Liu
- Department of Child Healthcare, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Tao Chen
- Department of Radiology, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Yu Wang
- Department of Radiology, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Xiaozheng Liu
- Department of Radiology, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Peipei Ye
- Department of Radiology, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Wei Xiang
- Department of Radiology, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Zhihan Yan
- Department of Radiology, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China.
| |
Collapse
|
189
|
Krizman J, Bonacina S, Kraus N. Sex differences in subcortical auditory processing emerge across development. Hear Res 2019; 380:166-174. [DOI: 10.1016/j.heares.2019.07.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 07/01/2019] [Accepted: 07/04/2019] [Indexed: 01/26/2023]
|
190
|
Lee G, Kim J, Kim Y, Yoo S, Park JH. Identifying and monitoring neurons that undergo metamorphosis-regulated cell death (metamorphoptosis) by a neuron-specific caspase sensor (Casor) in Drosophila melanogaster. Apoptosis 2019; 23:41-53. [PMID: 29224041 DOI: 10.1007/s10495-017-1435-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Activation of caspases is an essential step toward initiating apoptotic cell death. During metamorphosis of Drosophila melanogaster, many larval neurons are programmed for elimination to establish an adult central nervous system (CNS) as well as peripheral nervous system (PNS). However, their neuronal functions have remained mostly unknown due to the lack of proper tools to identify them. To obtain detailed information about the neurochemical phenotypes of the doomed larval neurons and their timing of death, we generated a new GFP-based caspase sensor (Casor) that is designed to change its subcellular position from the cell membrane to the nucleus following proteolytic cleavage by active caspases. Ectopic expression of Casor in vCrz and bursicon, two different peptidergic neuronal groups that had been well-characterized for their metamorphic programmed cell death, showed clear nuclear translocation of Casor in a caspase-dependent manner before their death. We found similar events in some cholinergic neurons from both CNS and PNS. Moreover, Casor also reported significant caspase activities in the ventral and dorsal common excitatory larval motoneurons shortly after puparium formation. These motoneurons were previously unknown for their apoptotic fate. Unlike the events seen in the neurons, expression of Casor in non-neuronal cell types, such as glial cells and S2 cells, resulted in the formation of cytoplasmic aggregates, preventing its use as a caspase sensor in these cell types. Nonetheless, our results support Casor as a valuable molecular tool not only for identifying novel groups of neurons that become caspase-active during metamorphosis but also for monitoring developmental timing and cytological changes within the dying neurons.
Collapse
Affiliation(s)
- Gyunghee Lee
- Laboratory of Neurogenetics, Department of Biochemistry and Cellular and Molecular Biology and NeuroNet Research Center, University of Tennessee, Knoxville, TN, 37996, USA
| | - Jaeman Kim
- Department of Biological Science, Mokpo National University, Muan-gun, Jeonnam, Republic of Korea
| | - Yujin Kim
- Department of Life Sciences, Yeungnam University, Gyeongsan, Gyeongbuk, 38541, Republic of Korea
| | - Siuk Yoo
- Department of Life Sciences, Yeungnam University, Gyeongsan, Gyeongbuk, 38541, Republic of Korea
| | - Jae H Park
- Laboratory of Neurogenetics, Department of Biochemistry and Cellular and Molecular Biology and NeuroNet Research Center, University of Tennessee, Knoxville, TN, 37996, USA.
| |
Collapse
|
191
|
Puberty and functional brain development in humans: Convergence in findings? Dev Cogn Neurosci 2019; 39:100690. [PMID: 31450015 PMCID: PMC6969369 DOI: 10.1016/j.dcn.2019.100690] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 07/28/2019] [Accepted: 08/01/2019] [Indexed: 12/27/2022] Open
Abstract
Although there is a long history of studying the influence of pubertal hormones on brain function/structure in animals, this research in human adolescents is young but burgeoning. Here, we provide a comprehensive review of findings from neuroimaging studies investigating the relation between pubertal and functional brain development in humans. We quantified the findings from this literature in which statistics required for standard meta-analyses are often not provided (i.e., effect size in fMRI studies). To do so, we assessed convergence in findings within content domains (reward, facial emotion, social information, cognitive processing) in terms of the locus and directionality (i.e., positive/negative) of effects. Face processing is the only domain with convergence in the locus of effects in the amygdala. Social information processing is the only domain with convergence of positive effects; however, these effects are not consistently present in any brain region. There is no convergence of effects in either the reward or cognitive processing domains. This limited convergence in findings across domains is not the result of null findings or even due to the variety of experimental paradigms researchers employ. Instead, there are critical theoretical, methodological, and analytical issues that must be addressed in order to move the field forward.
Collapse
|
192
|
Chen P, Hong W. Neural Circuit Mechanisms of Social Behavior. Neuron 2019; 98:16-30. [PMID: 29621486 DOI: 10.1016/j.neuron.2018.02.026] [Citation(s) in RCA: 246] [Impact Index Per Article: 49.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2017] [Revised: 02/11/2018] [Accepted: 02/26/2018] [Indexed: 12/31/2022]
Abstract
We live in a world that is largely socially constructed, and we are constantly involved in and fundamentally influenced by a broad array of complex social interactions. Social behaviors among conspecifics, either conflictive or cooperative, are exhibited by all sexually reproducing animal species and are essential for the health, survival, and reproduction of animals. Conversely, impairment in social function is a prominent feature of several neuropsychiatric disorders, such as autism spectrum disorders and schizophrenia. Despite the importance of social behaviors, many fundamental questions remain unanswered. How is social sensory information processed and integrated in the nervous system? How are different social behavioral decisions selected and modulated in brain circuits? Here we discuss conceptual issues and recent advances in our understanding of brain regions and neural circuit mechanisms underlying the regulation of social behaviors.
Collapse
Affiliation(s)
- Patrick Chen
- Department of Biological Chemistry and Department of Neurobiology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Weizhe Hong
- Department of Biological Chemistry and Department of Neurobiology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA.
| |
Collapse
|
193
|
McCallum-Loudeac J, Anderson G, Wilson MJ. Age and Sex-Related Changes to Gene Expression in the Mouse Spinal Cord. J Mol Neurosci 2019; 69:419-432. [PMID: 31267314 DOI: 10.1007/s12031-019-01371-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2019] [Accepted: 06/25/2019] [Indexed: 02/07/2023]
Abstract
The spinal cord is essential for neuronal communication between the brain and rest of the body. To gain further insight into the molecular changes underpinning maturation of the mouse spinal cord, we analysed gene expression differences between 4 weeks of age (prior to puberty onset) and adulthood (8 weeks). We found 800 genes were significantly differentially expressed between juvenile and adult spinal cords. Gene ontology analysis revealed an overrepresentation of genes with roles in myelination and signal transduction among others. The expression of a further 19 genes was sexually dimorphic; these included both autosomal and sex-linked genes. Given the presence of steroid hormone receptors in the spinal cord, we also looked at the impact of two major steroid hormones, oestradiol and dihydrotestosterone (DHT) on spinal cord gene expression for selected genes. In gonadectomised male animals, implants with oestradiol and DHT produced significant changes to spinal cord gene expression. This study provides an overview of the global gene expression changes that occur as the spinal cord matures, over a key period of maturation. This confirms that both age and sex are important considerations in studies involving the spinal cord.
Collapse
Affiliation(s)
- Jeremy McCallum-Loudeac
- Department of Anatomy, School of Biomedical Sciences, University of Otago, P.O. Box 56, Dunedin, 9054, New Zealand
| | - Greg Anderson
- Department of Anatomy, School of Biomedical Sciences, University of Otago, P.O. Box 56, Dunedin, 9054, New Zealand
| | - Megan J Wilson
- Department of Anatomy, School of Biomedical Sciences, University of Otago, P.O. Box 56, Dunedin, 9054, New Zealand.
| |
Collapse
|
194
|
Family income from birth through adolescence: Implications for positive youth development. JOURNAL OF APPLIED DEVELOPMENTAL PSYCHOLOGY 2019. [DOI: 10.1016/j.appdev.2019.101055] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
195
|
Stress-induced disturbances along the gut microbiota-immune-brain axis and implications for mental health: Does sex matter? Front Neuroendocrinol 2019; 54:100772. [PMID: 31302116 DOI: 10.1016/j.yfrne.2019.100772] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/17/2019] [Revised: 06/07/2019] [Accepted: 07/09/2019] [Indexed: 12/17/2022]
Abstract
Women are roughly twice as likely as men to suffer from stress-related disorders, especially major depression and generalized anxiety. Accumulating evidence suggest that microbes inhabiting the gastrointestinal tract (the gut microbiota) interact with the host brain and may play a key role in the pathogenesis of mental illnesses. Here, the possibility that sexually dimorphic alterations along the gut microbiota-immune-brain axis could play a role in promoting this female bias of mood and anxiety disorders will be discussed. This review will also analyze the idea that gut microbes and sex hormones influence each other, and that this reciprocal crosstalk may come to modulate inflammatory players along the gut microbiota-immune-brain axis and influence behavior in a sex-dependent way.
Collapse
|
196
|
Abstract
At the onset of puberty, ovarian hormones increase inhibitory tone in the prefrontal cortex. Inhibitory maturation is a hallmark of the initiation of developmental windows of neural plasticity; pubertal hormones may trigger the opening of an adolescent critical period for experience-dependent rewiring of circuits underlying executive function.
Collapse
|
197
|
Sheu JR, Hsieh CY, Jayakumar T, Tseng MF, Lee HN, Huang SW, Manubolu M, Yang CH. A Critical Period for the Development of Schizophrenia-Like Pathology by Aberrant Postnatal Neurogenesis. Front Neurosci 2019; 13:635. [PMID: 31275109 PMCID: PMC6591536 DOI: 10.3389/fnins.2019.00635] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Accepted: 06/03/2019] [Indexed: 11/18/2022] Open
Abstract
Schizophrenia is a complex and serious mental disorder, and patients with schizophrenia are characterized by psychological hallucinations, deregulated emotionality, and cognitive impairment. Evidence indicated that postnatal neurogenesis in the hippocampus is profoundly impaired in schizophrenic individuals but the role of such dysregulated neurodevelopmental processing in the pathophysiological progress of schizophrenia has not been well investigated. Here in this study, by using the rodent model of schizophrenia through maternal immune activation of poly (I:C) injection, we aimed to examine whether the postnatal neurogenesis might be involved in the development of schizophrenia-like pathology. Through the comprehensive behavioral analyses of multiple core symptoms of schizophrenia at different developmental stages (6-, 9-, and 12-weeks after birth) of the affected offspring, we found a delayed onset of schizophrenia-like behaviors in poly (I:C) animals through the development. Meanwhile, there is an age-dependent alteration of postnatal neurogenesis in the poly (I:C) animals along different development stages by which the aberrant dendritic elaboration functionally correlated with the schizophrenia-like symptoms in 9-week-old of age for the animals. Interestingly, increase in the neurogenesis during a critical period of neurodevelopment exacerbates the schizophrenia-like pathology. Conversely, temporal suppression of aberrant postnatal neurogenesis during the same period of neurodevelopment ameliorates the occurrence of schizophrenia-like symptoms. Together, these findings strongly suggested the aberrant dendritic growth of postnatal neurogenesis during the critical time window of development is essential for controlling the pathophysiological progression of schizophrenia-like symptoms. And pharmacological treatments that adjust these abnormalities may provide potential therapeutic benefits toward patients with schizophrenia in clinic.
Collapse
Affiliation(s)
- Joen-Rong Sheu
- Department of Pharmacology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan.,Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Cheng-Ying Hsieh
- Department of Pharmacology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Thanasekaran Jayakumar
- Department of Pharmacology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Mei-Fang Tseng
- Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Hsing-Ni Lee
- Department of Pharmacology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Shin-Wei Huang
- Department of Pharmacology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Manjunath Manubolu
- Department of Evolution, Ecology and Organismal Biology, The Ohio State University, Columbus, OH, United States
| | - Chih-Hao Yang
- Department of Pharmacology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| |
Collapse
|
198
|
Slavny RJM, Sebastian CL, Pote H. Age-related changes in cognitive biases during adolescence. J Adolesc 2019; 74:63-70. [PMID: 31170599 DOI: 10.1016/j.adolescence.2019.04.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Revised: 04/24/2019] [Accepted: 04/25/2019] [Indexed: 10/26/2022]
Abstract
INTRODUCTION Age has been found to moderate the relation between cognitive biases and psychopathology, yet little is known about normative age-related change in these biases during adolescence. Adolescence might be a key developmental period for changes in negatively biased information-processing, and understanding the trajectories of these processes in a typically developing population is a pre-requisite for further comprehending their association with psychopathology. METHODS This study explores the effect of age on seven cognitive biases in a diverse community sample from the United Kingdom (N = 540) aged 10-17 years (309 were female) using self-report measures. RESULTS Age demonstrated a positive linear association with three biases: threat interpretation, negative attributions and overgeneralizing scores. CONCLUSIONS Important changes take place during adolescence that may increase young people's negative cognitive biases. Empirical data on normative age-related changes in cognitive biases should be integrated into theoretical models of biased information-processing and psychopathology.
Collapse
Affiliation(s)
- Rachel J M Slavny
- Autism Research Centre, Department of Psychiatry, University of Cambridge, Douglas House, 18B Trumpington Road, Cambridge CB2 8AH, UK; Department of Psychology, Royal Holloway, University of London, Egham, UK.
| | | | - Helen Pote
- Department of Psychology, Royal Holloway, University of London, Egham, UK.
| |
Collapse
|
199
|
Smelror RE, Jørgensen KN, Lonning V, Kelleher I, Cannon M, DeRosse P, Malhotra AK, Karlsgodt KH, Andreassen OA, Lundberg M, Edbom T, Cleland N, Ueland T, Myhre AM, Rund BR, Agartz I. Healthy Adolescent Performance With Standardized Scoring Tables for the MATRICS Consensus Cognitive Battery: A Multisite Study. Schizophr Bull 2019; 45:773-783. [PMID: 30239900 PMCID: PMC6581217 DOI: 10.1093/schbul/sby131] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE The aim of this study was to develop standardized scores and scoring tables for test performance in healthy adolescents for the Measurement and Treatment Research to Improve Cognition in Schizophrenia (MATRICS) Consensus Cognitive Battery (MCCB) for each year from 11 to 19 years of age, by sex, with T scores and percentile ranks. METHODS A total of 502 healthy participants (aged 11-19 years) from 7 cohorts from Ireland, Norway, Sweden, and United States, were included in this multisite study. Regression-predicted means for the MCCB tests, except the social cognition subtest, were calculated using the MCCB test scores as outcome variables and age, age2, sex, age × sex as predictors. The regression-predicted means for each combination of age and sex were added with the residuals from the entire cohort to yield the expected distribution of that group. Age effects were examined using regression models with age and age2 as predictors. Sex differences were examined using Student's t-tests. RESULTS Significant positive age effects were found for all tests, except for the Brief Visuospatial Memory Test, revised (BVMT-R; measure of visual learning). Females performed significantly better than males on BACS Symbol coding (measure of speed of processing) and BVMT-R, while males performed significantly better than females on NAB Mazes (measure of reasoning and problem solving). Based on the regression-predicted distributions of scores, 19 standardized scoring tables for each test and domain were created. CONCLUSIONS With the results from this study, we have developed an accessible standardized data set of healthy adolescent test performance for the MCCB.
Collapse
Affiliation(s)
- Runar Elle Smelror
- NORMENT, KG Jebsen Centre for Psychosis Research, Institute of Clinical Medicine, University of Oslo, Oslo, Norway,Department of Psychiatric Research, Diakonhjemmet Hospital, Oslo, Norway,To whom correspondence should be addressed; Department of Psychiatric Research, Diakonhjemmet Hospital, University of Oslo, PO Box 85, Vinderen, 0319 Oslo, Norway; tel: +47-95744029, fax: +47-22495862, e-mail:
| | - Kjetil Nordbø Jørgensen
- NORMENT, KG Jebsen Centre for Psychosis Research, Institute of Clinical Medicine, University of Oslo, Oslo, Norway,Department of Psychiatric Research, Diakonhjemmet Hospital, Oslo, Norway
| | - Vera Lonning
- NORMENT, KG Jebsen Centre for Psychosis Research, Institute of Clinical Medicine, University of Oslo, Oslo, Norway,Department of Psychiatric Research, Diakonhjemmet Hospital, Oslo, Norway
| | - Ian Kelleher
- Department of Psychiatry, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Mary Cannon
- Department of Psychiatry, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Pamela DeRosse
- Department of Psychiatry, The Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY
| | - Anil K Malhotra
- Department of Psychiatry, The Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY,Center for Psychiatric Neuroscience, The Feinstein Institute for Medical Research, Manhasset, NY,Division of Psychiatry Research, The Zucker Hillside Hospital, Division of Northwell Health, Glen Oaks, NY
| | - Katherine H Karlsgodt
- Department of Psychology, University of California, Los Angeles, CA,Department of Psychiatry, University of California, Los Angeles, CA
| | - Ole A Andreassen
- NORMENT, KG Jebsen Centre for Psychosis Research, Institute of Clinical Medicine, University of Oslo, Oslo, Norway,Division of Mental Health and Addiction, Oslo University Hospital, Oslo, Norway
| | - Mathias Lundberg
- Centre for Psychiatric Research, Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden,Department of Clinical Science and Education, Södersjukhuset, Internal medicine, Karolinska Institutet, Stockholm, Sweden
| | - Tobias Edbom
- Centre for Psychiatric Research, Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Neil Cleland
- Centre for Psychiatric Research, Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Torill Ueland
- NORMENT, KG Jebsen Centre for Psychosis Research, Institute of Clinical Medicine, University of Oslo, Oslo, Norway,Division of Mental Health and Addiction, Oslo University Hospital, Oslo, Norway,Department of Psychology, University of Oslo, Oslo, Norway
| | | | - Bjørn Rishovd Rund
- Department of Psychology, University of Oslo, Oslo, Norway,Research Department, Vestre Viken Hospital Trust, Drammen, Norway
| | - Ingrid Agartz
- NORMENT, KG Jebsen Centre for Psychosis Research, Institute of Clinical Medicine, University of Oslo, Oslo, Norway,Department of Psychiatric Research, Diakonhjemmet Hospital, Oslo, Norway,Centre for Psychiatric Research, Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
| |
Collapse
|
200
|
Mahfouda S, Moore JK, Siafarikas A, Hewitt T, Ganti U, Lin A, Zepf FD. Gender-affirming hormones and surgery in transgender children and adolescents. Lancet Diabetes Endocrinol 2019; 7:484-498. [PMID: 30528161 DOI: 10.1016/s2213-8587(18)30305-x] [Citation(s) in RCA: 74] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Revised: 09/25/2018] [Accepted: 10/15/2018] [Indexed: 12/19/2022]
Abstract
The Endocrine Society Clinical Practice Guidelines on the treatment of gender incongruent people recommend the use of gender-affirming cross-sex hormone (CSH) interventions in transgender children and adolescents who request this treatment, who have undergone psychiatric assessment, and have maintained a persistent transgender identity. The intervention can help to affirm gender identity by inducing masculine or feminine physical characteristics that are congruent with an individual's gender expression, while aiming to improve mental health and quality-of-life outcomes. Some transgender individuals might also wish to access gender-affirming surgeries during adolescence; however, research to inform best clinical practice for surgeons and other medical professionals is scarce. This Review explores the available published evidence on gender-affirming CSH and surgical interventions in transgender children and adolescents, amalgamating findings on mental health outcomes, cognitive and physical effects, side-effects, and safety variables. The small amount of available data suggest that when clearly indicated in accordance with international guidelines, gender-affirming CSHs and chest wall masculinisation in transgender males are associated with improvements in mental health and quality of life. Evidence regarding surgical vaginoplasty in transgender females younger than age 18 years remains extremely scarce and conclusions cannot yet be drawn regarding its risks and benefits in this age group. Further research on an international scale is urgently warranted to clarify long-term outcomes on psychological functioning and safety.
Collapse
Affiliation(s)
- Simone Mahfouda
- Centre and Discipline of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, Division of Psychiatry and Clinical Neurosciences and Division of Paediatrics and Child Health, School of Medicine, Faculty of Health and Medical Sciences, University of Western Australia, Perth, WA 6009, Australia; Telethon Kids Institute, University of Western Australia, Perth, WA 6009, Australia; School of Psychological Sciences, Faculty of Sciences, University of Western Australia, Perth, WA 6009, Australia
| | - Julia K Moore
- Centre and Discipline of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, Division of Psychiatry and Clinical Neurosciences and Division of Paediatrics and Child Health, School of Medicine, Faculty of Health and Medical Sciences, University of Western Australia, Perth, WA 6009, Australia; Gender Diversity Service, Child and Adolescent Mental Health Service, Child and Adolescent Health Service, Perth, WA, Australia
| | - Aris Siafarikas
- Telethon Kids Institute, University of Western Australia, Perth, WA 6009, Australia; Division of Paediatrics and Child Health, School of Medicine, Faculty of Health and Medical Sciences, University of Western Australia, Perth, WA 6009, Australia; Department of Endocrinology and Diabetes, Perth Children's Hospital, Perth, WA, Australia
| | - Timothy Hewitt
- Department of Plastic and Reconstructive Surgery, Perth Children's Hospital, Perth, WA, Australia
| | - Uma Ganti
- Department of Endocrinology and Diabetes, Perth Children's Hospital, Perth, WA, Australia
| | - Ashleigh Lin
- Telethon Kids Institute, University of Western Australia, Perth, WA 6009, Australia
| | - Florian Daniel Zepf
- Centre and Discipline of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, Division of Psychiatry and Clinical Neurosciences and Division of Paediatrics and Child Health, School of Medicine, Faculty of Health and Medical Sciences, University of Western Australia, Perth, WA 6009, Australia; Telethon Kids Institute, University of Western Australia, Perth, WA 6009, Australia; Department of Child and Adolescent Psychiatry, Psychosomatic Medicine and Psychotherapy, Jena University Hospital, Friedrich Schiller University Jena, Germany.
| |
Collapse
|