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Zepf FD, König L, Kaiser A, Ligges C, Ligges M, Roessner V, Banaschewski T, Holtmann M. [Beyond NICE: Updated Systematic Review on the Current Evidence of Using Puberty Blocking Pharmacological Agents and Cross-Sex-Hormones in Minors with Gender Dysphoria]. ZEITSCHRIFT FUR KINDER- UND JUGENDPSYCHIATRIE UND PSYCHOTHERAPIE 2024; 52:167-187. [PMID: 38410090 DOI: 10.1024/1422-4917/a000972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
Beyond NICE: Updated Systematic Review on the Current Evidence of Using Puberty Blocking Pharmacological Agents and Cross-Sex-Hormones in Minors with Gender Dysphoria Abstract: Objective: The suppression of physiological puberty using puberty-blocking pharmacological agents (PB) and prescribing cross-sex hormones (CSH) to minors with gender dysphoria (GD) is a current matter of discussion, and in some cases, PB and CSH are used in clinical practice for this particular population. Two systematic reviews (one on PB, one on CSH treatment) by the British National Institute for Clinical Excellence (NICE) from 2020 indicated no clear clinical benefit of such treatments regarding critical outcome variables. In particular, these two systematic NICE reviews on the use of PB and CSH in minors with GD detected no clear improvements of GD symptoms. Moreover, the overall scientific quality of the available evidence, as discussed within the above-mentioned two NICE reviews, was classified as "very low certainty" regarding modified GRADE criteria. Method: The present systematic review presents an updated literature search on this particular topic (use of PB and CSH in minors with GD) following NICE principles and PICO criteria for all relevant new original research studies published since the release of the two above-mentioned NICE reviews (updated literature search period was July 2020-August 2023). Results: The newly conducted literature search revealed no newly published original studies targeting NICE-defined critical and important outcomes and the related use of PB in minors with GD following PICO criteria. For CSH treatment, we found two new studies that met PICO criteria, but these particular two studies had low participant numbers, yielded no significant additional clear evidence for specific and clearly beneficial effects of CSH in minors with GD, and could be classified as "low certainty" tfollowing modified GRADE criteria. Conclusions: The currently available studies on the use of PB and CSH in minors with GD have significant conceptual and methodological flaws. The available evidence on the use of PB and CSH in minors with GD is very limited and based on only a few studies with small numbers, and these studies have problematic methodology and quality. There also is a lack of adequate and meaningful long-term studies. Current evidence doesn't suggest that GD symptoms and mental health significantly improve when PB or CSH are used in minors with GD. Psychotherapeutic interventions to address and reduce the experienced burden can become relevant in children and adolescents with GD. If the decision to use PB and/or CSH is made on an individual case-by-case basis and after a complete and thorough mental health assessment, potential treatment of possibly co-occurring mental health problems as well as after a thoroughly conducted and carefully executed individual risk-benefit evaluation, doing so as part of clinical studies or research projects, as currently done in England, can be of value in terms of generation of new research data. The electronic supplement (ESM) 1 is an adapted and abreviated English version of this work.
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Affiliation(s)
- Florian D Zepf
- Department of Child and Adolescent Psychiatry, Psychosomatic Medicine and Psychotherapy, Jena University Hospital, Friedrich Schiller University Jena, Jena, Germany
- German Center for Mental Health (DZPG), Site Jena-Magdeburg-Halle, Jena, Germany
| | - Laura König
- Department of Child and Adolescent Psychiatry, Psychosomatic Medicine and Psychotherapy, Jena University Hospital, Friedrich Schiller University Jena, Jena, Germany
- German Center for Mental Health (DZPG), Site Jena-Magdeburg-Halle, Jena, Germany
| | - Anna Kaiser
- Central Institute of Mental Health, Medical Faculty Mannheim/Heidelberg University, Mannheim, Germany
| | - Carolin Ligges
- Department of Child and Adolescent Psychiatry, Psychosomatic Medicine and Psychotherapy, Jena University Hospital, Friedrich Schiller University Jena, Jena, Germany
- German Center for Mental Health (DZPG), Site Jena-Magdeburg-Halle, Jena, Germany
| | - Marc Ligges
- Department of Child and Adolescent Psychiatry, Psychosomatic Medicine and Psychotherapy, Jena University Hospital, Friedrich Schiller University Jena, Jena, Germany
- German Center for Mental Health (DZPG), Site Jena-Magdeburg-Halle, Jena, Germany
| | - Veit Roessner
- Department of Child and Adolescent Psychiatry, TU Dresden, Dresden, Germany
- German Center for Child and Adolescent Health (DZJK), partner site Leipzig-Dresden, Germany
| | - Tobias Banaschewski
- Central Institute of Mental Health, Medical Faculty Mannheim/Heidelberg University, Mannheim, Germany
- German Center for Mental Health (DZPG), partner site Mannheim-Heidelberg-Ulm, Germany
| | - Martin Holtmann
- LWL-Universitätsklinik Hamm der Ruhr-Universität Bochum, Hamm, Germany
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2
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Tyborowska A, Volman I, Niermann HCM, Dapprich AL, Smeekens S, Cillessen AHN, Toni I, Roelofs K. Developmental shift in testosterone influence on prefrontal emotion control. Dev Sci 2024; 27:e13415. [PMID: 37341037 DOI: 10.1111/desc.13415] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 05/03/2023] [Accepted: 05/09/2023] [Indexed: 06/22/2023]
Abstract
A paradox of testosterone effects is seen in adolescents versus adults in social emotional approach-avoidance behavior. During adolescence, high testosterone levels are associated with increased anterior prefrontal (aPFC) involvement in emotion control, whereas during adulthood this neuro-endocrine relation is reversed. Rodent work shows that, during puberty, testosterone transitions from a neuro-developmental to a social-sexual activating hormone. In this study, we explored whether this functional transition is also present in human adolescents and young adults. Using a prospective longitudinal design, we investigated the role of testosterone on neural control of social emotional behavior during the transitions from middle to late adolescence and into young adulthood. Seventy-one individuals (tested at ages 14, 17, and 20 years) performed an fMRI-adapted approach-avoidance (AA) task involving automatic and controlled actions in response to social emotional stimuli. In line with predictions from animal models, the effect of testosterone on aPFC engagement decreased between middle and late adolescence, and shifted into an activational role by young adulthood-impeding neural control of emotions. This change in testosterone function was accompanied by increased testosterone-modulated amygdala reactivity. These findings qualify the testosterone-dependent maturation of the prefrontal-amygdala circuit supporting emotion control during the transition from middle adolescence into young adulthood.
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Affiliation(s)
- Anna Tyborowska
- Behavioural Science Institute, Radboud University, Nijmegen, Netherlands
- Donders Institute for Brain, Cognition and Behaviour, Radboud University, Nijmegen, Netherlands
- Department of Psychiatry, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Centre, Nijmegen, Netherlands
| | - Inge Volman
- Department of Psychiatry, University of Oxford, Oxford, UK
- Wellcome Centre for Integrative Neuroimaging (WIN), Centre for Functional MRI of the Brain (FMRIB), Nuffield Department of Clinical Neurosciences, John Radcliffe Hospital, University of Oxford, Oxford, UK
| | - Hannah C M Niermann
- Behavioural Science Institute, Radboud University, Nijmegen, Netherlands
- Donders Institute for Brain, Cognition and Behaviour, Radboud University, Nijmegen, Netherlands
| | - Anna L Dapprich
- Behavioural Science Institute, Radboud University, Nijmegen, Netherlands
| | - Sanny Smeekens
- Behavioural Science Institute, Radboud University, Nijmegen, Netherlands
- Faculty of Psychology and Educational Sciences, Open University of the Netherlands, Heerlen, Netherlands
- Pro Persona, Nijmegen, Netherlands
| | | | - Ivan Toni
- Donders Institute for Brain, Cognition and Behaviour, Radboud University, Nijmegen, Netherlands
| | - Karin Roelofs
- Behavioural Science Institute, Radboud University, Nijmegen, Netherlands
- Donders Institute for Brain, Cognition and Behaviour, Radboud University, Nijmegen, Netherlands
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3
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Picci G, Ott LR, Penhale SH, Taylor BK, Johnson HJ, Willett MP, Okelberry HJ, Wang Y, Calhoun VD, Stephen JM, Wilson TW. Developmental changes in endogenous testosterone have sexually-dimorphic effects on spontaneous cortical dynamics. Hum Brain Mapp 2023; 44:6043-6054. [PMID: 37811842 PMCID: PMC10619376 DOI: 10.1002/hbm.26496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2022] [Revised: 04/18/2023] [Accepted: 09/13/2023] [Indexed: 10/10/2023] Open
Abstract
The transition from childhood to adolescence is associated with an influx of sex hormones, which not only facilitates physical and behavioral changes, but also dramatic changes in neural circuitry. While previous work has shown that pubertal hormones modulate structural and functional brain development, few of these studies have focused on the impact that such hormones have on spontaneous cortical activity, and whether these effects are modulated by sex during this critical developmental window. Herein, we examined the effect of endogenous testosterone on spontaneous cortical activity in 71 typically-developing youth (ages 10-17 years; 32 male). Participants completed a resting-state magnetoencephalographic (MEG) recording, structural MRI, and provided a saliva sample for hormone analysis. MEG data were source-reconstructed and the power within five canonical frequency bands (delta, theta, alpha, beta, and gamma) was computed. The resulting power spectral density maps were analyzed via vertex-wise ANCOVAs to identify spatially specific effects of testosterone and sex by testosterone interactions, while covarying out age. We found robust sex differences in the modulatory effects of testosterone on spontaneous delta, beta, and gamma activity. These interactions were largely confined to frontal cortices and exhibited a stark switch in the directionality of the correlation from the low (delta) to high frequencies (beta/gamma). For example, in the delta band, greater testosterone related to lower relative power in prefrontal cortices in boys, while the reverse pattern was found for girls. These data suggest testosterone levels are uniquely related to the development of spontaneous cortical dynamics during adolescence, and such levels are associated with different developmental patterns in males and females within regions implicated in executive functioning.
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Affiliation(s)
- Giorgia Picci
- Institute for Human Neuroscience, Boys Town National Research HospitalBoys TownNebraskaUSA
- Center for Pediatric Brain Health, Boys Town National Research HospitalBoys TownNebraskaUSA
| | - Lauren R. Ott
- Institute for Human Neuroscience, Boys Town National Research HospitalBoys TownNebraskaUSA
- Center for Pediatric Brain Health, Boys Town National Research HospitalBoys TownNebraskaUSA
| | - Samantha H. Penhale
- Institute for Human Neuroscience, Boys Town National Research HospitalBoys TownNebraskaUSA
- Center for Pediatric Brain Health, Boys Town National Research HospitalBoys TownNebraskaUSA
| | - Brittany K. Taylor
- Institute for Human Neuroscience, Boys Town National Research HospitalBoys TownNebraskaUSA
- Center for Pediatric Brain Health, Boys Town National Research HospitalBoys TownNebraskaUSA
| | - Hallie J. Johnson
- Institute for Human Neuroscience, Boys Town National Research HospitalBoys TownNebraskaUSA
- Center for Pediatric Brain Health, Boys Town National Research HospitalBoys TownNebraskaUSA
| | - Madelyn P. Willett
- Institute for Human Neuroscience, Boys Town National Research HospitalBoys TownNebraskaUSA
- Center for Pediatric Brain Health, Boys Town National Research HospitalBoys TownNebraskaUSA
| | - Hannah J. Okelberry
- Institute for Human Neuroscience, Boys Town National Research HospitalBoys TownNebraskaUSA
- Center for Pediatric Brain Health, Boys Town National Research HospitalBoys TownNebraskaUSA
| | - Yu‐Ping Wang
- Department of Biomedical EngineeringTulane UniversityNew OrleansLouisianaUSA
| | - Vince D. Calhoun
- Tri‐Institutional Center for Translational Research in Neuroimaging and Data Science (TReNDS), Georgia State University, Georgia Institute of TechnologyEmory UniversityAtlantaGeorgiaUSA
| | | | - Tony W. Wilson
- Institute for Human Neuroscience, Boys Town National Research HospitalBoys TownNebraskaUSA
- Center for Pediatric Brain Health, Boys Town National Research HospitalBoys TownNebraskaUSA
- Department of Pharmacology & NeuroscienceCreighton UniversityOmahaNebraskaUSA
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4
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Woodhill BM, Samuels CA. 21st Century Neo-Androgyny: What Is Androgyny Anymore and Why We Should Still Care. Psychol Rep 2023; 126:2322-2344. [PMID: 35343328 DOI: 10.1177/00332941221076759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The notion of psychological androgyny as a research tool loiters on in an incapacitated state. The lack of a general theory and the belief that the biological gender differences are insignificant to non-existent has been the seeds for its de-construction. Over the decades, the testing of ideas associated with androgyny has declined. Indeed, the debates over its usefulness as a construct ended long ago. The judgment nowadays is that debating the constructs of masculinity, femininity, and androgyny as behavioral traits has been long settled, and a contemporary revisiting of androgyny is not warranted. However, from another contemporary viewpoint, if androgyny is to have any future, it needs a new theory devoid of masculinity and femininity. We present a novel theory with the potential to do just that. This article details a new de-gendered theory of psychological androgyny, neo-androgyny, as a candidate to replace traditional models that are now considered outdated and irrelevant. We present five potential factors for inclusion in a de-gendered model: social efficacy, creativity, capability, eminence, and determination. We review these factors concerning the future of androgyny theory.
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Affiliation(s)
| | - Curtis A Samuels
- University of California, Berkeley, CA, USA; University of Connecticut, Storrs, CT, USA
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5
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Shahanoor Z, Sultana R, Savenkova M, Karatsoreos IN, Romeo RD. Metabolic dysfunctions following chronic oral corticosterone are modified by adolescence and sex in mice. Physiol Behav 2023; 269:114289. [PMID: 37422081 PMCID: PMC10530018 DOI: 10.1016/j.physbeh.2023.114289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 06/22/2023] [Accepted: 07/05/2023] [Indexed: 07/10/2023]
Abstract
Adolescence is a period of development in which shifts in responses to glucocorticoids is well-documented. Obesity and metabolic syndrome are substantial health issues whose rates continue to rise in both adult and adolescent populations. Though many interacting factors contribute to these dysfunctions, how these shifts in glucocorticoid responses may be related remain unknown. Using a model of oral corticosterone (CORT) exposure in male and female mice, we demonstrate differential responses during adolescence (30-58 days of age) or adulthood (70-98 day of age) in endpoints relevant to metabolic function. Our data indicate that CORT resulted in significant weight gain in adult- and adolescent-exposed females and adult-exposed males, but not adolescent-exposed males. Despite this difference, all animals treated with high levels of CORT showed significant increases in white adipose tissue, indicating a dissociation between weight gain and adiposity in adolescent-treated males. Similarly, all experimental groups showed significant increases in plasma insulin, leptin, and triglyceride levels, further suggesting potential disconnects between overt weight gain, and underlying metabolic dysregulation. Finally, we found age- and dose-dependent changes in the expression of hepatic genes important in glucocorticoid receptor and lipid regulation, which showed different patterns in males and females. Thus, altered transcriptional pathways in the liver might be contributing differentially to the similar metabolic phenotype observed among these experimental groups. We also show that despite little CORT-induced changes in the hypothalamic levels of orexin-A and NPY, we found that food and fluid intake were elevated in adolescent-treated males and females. These data indicate chronic exposure to elevated glucocorticoid levels results in metabolic dysfunction in both males and females, which can be further modulated by developmental stage.
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Affiliation(s)
- Ziasmin Shahanoor
- Departments of Psychology and Neuroscience and Behavior, Barnard College of Columbia University, New York, NY, 10027, United States
| | - Razia Sultana
- Departments of Psychology and Neuroscience and Behavior, Barnard College of Columbia University, New York, NY, 10027, United States
| | - Marina Savenkova
- Department of Integrative Physiology and Neuroscience, Washington State University, Pullman, WA 99164, United States
| | - Ilia N Karatsoreos
- Department of Psychological and Brain Sciences, University of Massachusetts, Amherst, MA 01003, United States
| | - Russell D Romeo
- Departments of Psychology and Neuroscience and Behavior, Barnard College of Columbia University, New York, NY, 10027, United States.
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6
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Pittet F, Hinde K. Meager Milk: Lasting Consequences for Adult Daughters of Primiparous Mothers Among Rhesus Macaques (Macaca mulatta). Integr Comp Biol 2023; 63:569-584. [PMID: 37170073 PMCID: PMC10503474 DOI: 10.1093/icb/icad022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2023] [Revised: 04/21/2023] [Accepted: 04/24/2023] [Indexed: 05/13/2023] Open
Abstract
Among mammals, primipara who initiate reproduction before full maturity can be constrained in their maternal investment, both due to fewer somatic resources and tradeoffs between their own continued development and reproductive effort. Primipara are particularly limited in their capacity to synthesize milk during lactation, the costliest aspect of reproduction for most mammals, especially primates due to long periods of postnatal development. Due to reduced milk transfer, Firstborns may be at elevated risk for long-term consequences of deficits in early life endowment from their primiparous mothers. Here we investigated mass, growth, stature, and lactation performance among N = 273 adult daughters across N = 335 reproductions, who were their own mother's Firstborn or Laterborn progeny, among rhesus macaques (Macaca mulatta) at the California National Primate Research Center. We further explored mass during infancy of the offspring of Firstborn and Laterborn mothers. Firstborns had accelerated growth during infancy, but had slowed growth during juvenility, compared to Laterborns. Although both Firstborns and Laterborns were the same age at reproductive debut, Firstborns had lower body mass, an effect that persisted throughout the reproductive career. Available milk energy, the product of milk energetic density and milk yield, was on average 16% lower for Firstborns compared to Laterborns, a difference that was only partially mediated by their lower mass. Despite differences in their mothers' energy provision through milk, the mass of infants of Firstborn and Laterborn mothers did not differ at peak lactation, suggesting that infants of Firstborns devote a higher proportion of milk energy to growth than infants of Laterborns. To date few studies have explored how early life conditions shape capacities to synthesize milk and milk composition. Our findings contribute new information among primates on how early life maternal endowments are associated with persistent effects long after the period of maternal dependence well into reproductive maturity.
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Affiliation(s)
- Florent Pittet
- Neuroscience and Behavior Unit, California National Primate Research Center, University of California, Davis, CA 95616, USA
| | - Katie Hinde
- School of Human Evolution and Social Change, Tempe, AZ 85287, USA
- Center for Evolution and Medicine, Arizona State University, Tempe, AZ 85287, USA
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7
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Yoest KE, Henry MG, Velisek HA, Veenema AH. Development of social recognition ability in female rats: Effect of pubertal ovarian hormones. Horm Behav 2023; 151:105347. [PMID: 36966657 DOI: 10.1016/j.yhbeh.2023.105347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 02/28/2023] [Accepted: 03/02/2023] [Indexed: 04/28/2023]
Abstract
The ability to recognize previously encountered conspecifics is crucial for social interaction. This social recognition ability is well characterized in adult rodents of both sexes but remains largely unexplored in juveniles. Using the social discrimination test of social recognition with short intervals (30 min and 1 h), we first found that juvenile female rats do not display a difference in investigation directed toward a novel vs. familiar stimulus rat. Using the social discrimination test with a 30-minute interval, we then showed that social recognition is established by the time of adolescence in female rats. Based on these findings, we hypothesized that social recognition is dependent on the initiation of ovarian hormone release during puberty. To test this, we ovariectomized females prior to puberty and found that prepubertal ovariectomy prevented the development of social recognition ability in adulthood. Administration of estradiol benzoate, 48 h prior to testing, to juvenile females or prepubertally ovariectomized adult females did not restore social recognition, suggesting that ovarian hormones organize the neural circuitry regulating this behavior during adolescence. These findings provide the first evidence of an effect of pubertal development on social recognition ability in female rats and highlight the importance of considering sex and age when interpreting results from behavioral paradigms initially designed for use in adult males.
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Affiliation(s)
- Katie E Yoest
- Department of Psychology, Michigan State University, East Lansing, MI, United States of America
| | - Morgen G Henry
- Department of Psychology, Michigan State University, East Lansing, MI, United States of America
| | - Haley A Velisek
- Department of Psychology, Michigan State University, East Lansing, MI, United States of America
| | - Alexa H Veenema
- Department of Psychology, Michigan State University, East Lansing, MI, United States of America; Neuroscience Program, Michigan State University, East Lansing, MI, United States of America.
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8
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Walker DM, Zhou X, Cunningham AM, Ramakrishnan A, Cates HM, Lardner CK, Peña CJ, Bagot RC, Issler O, Van der Zee Y, Lipschultz AP, Godino A, Browne CJ, Hodes GE, Parise EM, Torres-Berrio A, Kennedy PJ, Shen L, Zhang B, Nestler EJ. Crystallin Mu in Medial Amygdala Mediates the Effect of Social Experience on Cocaine Seeking in Males but Not in Females. Biol Psychiatry 2022; 92:895-906. [PMID: 36182529 PMCID: PMC9828478 DOI: 10.1016/j.biopsych.2022.06.026] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 05/31/2022] [Accepted: 06/20/2022] [Indexed: 01/12/2023]
Abstract
BACKGROUND Social experiences influence susceptibility to substance use disorder. The adolescent period is associated with the development of social reward and is exceptionally sensitive to disruptions to reward-associated behaviors by social experiences. Social isolation (SI) during adolescence alters anxiety- and reward-related behaviors in adult males, but little is known about females. The medial amygdala (meA) is a likely candidate for the modulation of social influence on drug reward because it regulates social reward, develops during adolescence, and is sensitive to social stress. However, little is known regarding how the meA responds to drugs of abuse. METHODS We used adolescent SI coupled with RNA sequencing to better understand the molecular mechanisms underlying meA regulation of social influence on reward. RESULTS We show that SI in adolescence, a well-established preclinical model for addiction susceptibility, enhances preference for cocaine in male but not in female mice and alters cocaine-induced protein and transcriptional profiles within the adult meA particularly in males. To determine whether transcriptional mechanisms within the meA are important for these behavioral effects, we manipulated Crym expression, a sex-specific key driver gene identified through differential gene expression and coexpression network analyses, specifically in meA neurons. Overexpression of Crym, but not another key driver that did not meet our sex-specific criteria, recapitulated the behavioral and transcriptional effects of adolescent SI. CONCLUSIONS These results show that the meA is essential for modulating the sex-specific effects of social experience on drug reward and establish Crym as a critical mediator of sex-specific behavioral and transcriptional plasticity.
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Affiliation(s)
- Deena M Walker
- Nash Family Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Xianxiao Zhou
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, New York; Mount Sinai Center for Transformative Disease Modeling, Icahn School of Medicine at Mount Sinai, New York, New York; Icahn Genomics Institute, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Ashley M Cunningham
- Nash Family Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Aarthi Ramakrishnan
- Nash Family Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Hannah M Cates
- Nash Family Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Casey K Lardner
- Nash Family Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Catherine J Peña
- Nash Family Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Rosemary C Bagot
- Nash Family Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Orna Issler
- Nash Family Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Yentl Van der Zee
- Nash Family Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Andrew P Lipschultz
- Nash Family Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Arthur Godino
- Nash Family Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Caleb J Browne
- Nash Family Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Georgia E Hodes
- Nash Family Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Eric M Parise
- Nash Family Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Angelica Torres-Berrio
- Nash Family Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Pamela J Kennedy
- Department of Psychology, University of California, Los Angeles, Los Angeles, California
| | - Li Shen
- Nash Family Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Bin Zhang
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, New York; Mount Sinai Center for Transformative Disease Modeling, Icahn School of Medicine at Mount Sinai, New York, New York; Icahn Genomics Institute, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Eric J Nestler
- Nash Family Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, New York.
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9
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Drea CM, Davies CS. Meerkat manners: Endocrine mediation of female dominance and reproductive control in a cooperative breeder. Horm Behav 2022; 145:105245. [PMID: 35988450 DOI: 10.1016/j.yhbeh.2022.105245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 07/18/2022] [Accepted: 08/08/2022] [Indexed: 11/16/2022]
Abstract
This article is part of a Special Issue (Hormones and Hierarchies). To gain more balanced understanding of sexual selection and mammalian sexual differentiation processes, this review addresses behavioral sex differences and hormonal mediators of intrasexual competition in the meerkat (Suricata suricatta) - a cooperative breeder unusual among vertebrates in its female aggression, degree of reproductive skew, and phenotypic divergence. Focused on the evolution, function, mechanism, and development of female dominance, the male remains a key reference point throughout. Integrated review of endocrine function does not support routine physiological suppression in subordinates of either sex, but instead a ramp up of weight, reproduction, aggression, and sex steroids, particularly androgens, in dominant females. Important and timely questions about female competition are thus addressed by shifting emphasis from mediators of reproductive suppression to mediators of reproductive control, and from organizational and activational roles of androgens in males to their roles in females. Unusually, we ask not only how inequity is maintained, but how dominance is acquired within a lifetime and across generations. Antiandrogens administered in the field to males and pregnant dominant females confirm the importance of androgen-mediated food competition. Moreover, effects of maternal endocrine milieu on offspring development reveal a heritable, androgenic route to female aggression, likely promoting reproductive priority along dominant matrilines. Integrating endocrine measures with long-term behavioral, ecological, morphological, and life-history data on normative and experimental individuals, across life stages and generations, provides better appreciation of the role of naturally circulating androgens in regulating the female phenotype, and sheds new light on the evolution of female dominance, reproductive inequity, and cooperative breeding.
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Affiliation(s)
- Christine M Drea
- Department of Evolutionary Anthropology, Duke University, Durham, NC 27708-0383, USA; Kalahari Research Trust, Kuruman River Reserve, Northern Cape, South Africa.
| | - Charli S Davies
- Department of Evolutionary Anthropology, Duke University, Durham, NC 27708-0383, USA; Kalahari Research Trust, Kuruman River Reserve, Northern Cape, South Africa
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10
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Abstract
AbstractAll mammals experience different life stages as they develop, each of which is characterised by particular physical and behavioural changes. Despite the emergence of sophisticated behaviour analysis techniques, the ways in which social behaviour varies by life stage, and how this is influenced by an individual’s sex, is relatively understudied in most social mammals other than primates and elephants. Understanding the social requirements of mammals should be a central and critical component to their conservation, captive management and welfare. Here, we apply social network analysis techniques to understand how social behaviour differs with life stage in the giraffe, a gregarious fission–fusion mammal. We studied two wild populations of giraffes in Kenya and found that adolescents have significantly stronger associations with adolescents of their own sex first and foremost, then adults of their own sex. Other associations were significantly lower than would be expected, or non-significant. Our results suggest that adolescence in both male and female giraffes shares similar features to adolescence in other social mammal species. We discuss how the application of such knowledge might improve the management and welfare of captive giraffes.
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11
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Hormonal contraceptives as disruptors of competitive behavior: Theoretical framing and review. Front Neuroendocrinol 2022; 66:101015. [PMID: 35835214 DOI: 10.1016/j.yfrne.2022.101015] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 06/16/2022] [Accepted: 07/06/2022] [Indexed: 12/14/2022]
Abstract
Emerging evidence suggests that hormonal contraceptives (HCs) impact psychological outcomes through alterations in neurophysiology. In this review, we first introduce a theoretical framework for HCs as disruptors of steroid hormone modulation of socially competitive attitudes and behaviors. Then, we comprehensively examine prior research comparing HC users and non-users in outcomes related to competition for reproductive, social, and financial resources. Synthesis of 46 studies (n = 16,290) led to several key conclusions: HC users do not show the same menstrual cycle-related fluctuations in self-perceived attractiveness and some intrasexual competition seen in naturally-cycling women and, further, may show relatively reduced status- or achievement-oriented competitive motivation. However, there a lack of consistent or compelling evidence that HC users and non-users differ in competitive behavior or attitudes for mates or financial resources. These conclusions are tentative given the notable methodological limitations of the studies reviewed. Implications and recommendations for future research are discussed.
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12
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Xu J, Hao L, Chen M, He Y, Jiang M, Tian T, Wang H, Wang Y, Wang D, Han ZR, Tan S, Men W, Gao J, He Y, Tao S, Dong Q, Qin S. Developmental Sex Differences in Negative Emotion Decision-Making Dynamics: Computational Evidence and Amygdala-Prefrontal Pathways. Cereb Cortex 2021; 32:2478-2491. [PMID: 34643680 DOI: 10.1093/cercor/bhab359] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 09/02/2021] [Accepted: 09/02/2021] [Indexed: 11/13/2022] Open
Abstract
Sex differences in human emotion and related decision-making behaviors are recognized, which can be traced back early in development. However, our understanding of their underlying neurodevelopmental mechanisms remains elusive. Using developmental functional magnetic resonance imaging and computational approach, we investigated developmental sex differences in latent decision-making dynamics during negative emotion processing and related neurocognitive pathways in 243 school-aged children and 78 young adults. Behaviorally, girls exhibit higher response caution and more effective evidence accumulation, whereas boys show more impulsive response to negative facial expression stimuli. These effects parallel sex differences in emotion-related brain maturity linking to evidence accumulation, along with age-related decrease in emotional response in the basolateral amygdala and medial prefrontal cortex (MPFC) in girls and an increase in the centromedial amygdala (CMA) in boys. Moreover, girls exhibit age-related decreases in BLA-MPFC coupling linked to evidence accumulation, but boys exhibit increases in CMA-insula coupling associated with response caution. Our findings highlight the neurocomputational accounts for developmental sex differences in emotion and emotion-related behaviors and provide important implications into the neurodevelopmental mechanisms of sex differences in latent emotional decision-making dynamics. This informs the emergence of sex differences in typical and atypical neurodevelopment of children's emotion and related functions.
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Affiliation(s)
- Jiahua Xu
- State Key Laboratory of Cognitive Neuroscience and Learning & IDG/McGovern Institute for Brain Research, Beijing Normal University, Beijing, 100875, China.,Key Laboratory of Beijing Key Laboratory of Brain Imaging and Connectomics, Beijing Normal University, Beijing, 100875, China
| | - Lei Hao
- State Key Laboratory of Cognitive Neuroscience and Learning & IDG/McGovern Institute for Brain Research, Beijing Normal University, Beijing, 100875, China.,Key Laboratory of Beijing Key Laboratory of Brain Imaging and Connectomics, Beijing Normal University, Beijing, 100875, China
| | - Menglu Chen
- State Key Laboratory of Cognitive Neuroscience and Learning & IDG/McGovern Institute for Brain Research, Beijing Normal University, Beijing, 100875, China.,Key Laboratory of Beijing Key Laboratory of Brain Imaging and Connectomics, Beijing Normal University, Beijing, 100875, China
| | - Ying He
- State Key Laboratory of Cognitive Neuroscience and Learning & IDG/McGovern Institute for Brain Research, Beijing Normal University, Beijing, 100875, China.,Key Laboratory of Beijing Key Laboratory of Brain Imaging and Connectomics, Beijing Normal University, Beijing, 100875, China
| | - Min Jiang
- State Key Laboratory of Cognitive Neuroscience and Learning & IDG/McGovern Institute for Brain Research, Beijing Normal University, Beijing, 100875, China.,Key Laboratory of Beijing Key Laboratory of Brain Imaging and Connectomics, Beijing Normal University, Beijing, 100875, China
| | - Ting Tian
- State Key Laboratory of Cognitive Neuroscience and Learning & IDG/McGovern Institute for Brain Research, Beijing Normal University, Beijing, 100875, China.,Key Laboratory of Beijing Key Laboratory of Brain Imaging and Connectomics, Beijing Normal University, Beijing, 100875, China
| | - Hui Wang
- Faculty of Psychology, School of Artificial Intelligence, Beijing Normal University, Beijing, 100875, China
| | - Yanpei Wang
- State Key Laboratory of Cognitive Neuroscience and Learning & IDG/McGovern Institute for Brain Research, Beijing Normal University, Beijing, 100875, China
| | - Daoyang Wang
- State Key Laboratory of Cognitive Neuroscience and Learning & IDG/McGovern Institute for Brain Research, Beijing Normal University, Beijing, 100875, China.,Department of Psychology, Hangzhou Normal University, Hangzhou, 311121, China
| | - Zhuo Rachel Han
- State Key Laboratory of Cognitive Neuroscience and Learning & IDG/McGovern Institute for Brain Research, Beijing Normal University, Beijing, 100875, China.,Key Laboratory of Beijing Key Laboratory of Brain Imaging and Connectomics, Beijing Normal University, Beijing, 100875, China
| | - Shuping Tan
- Beijing HuiLongGuan Hospital, Peking University, Beijing, 100096, China
| | - Weiwei Men
- Center for MRI Research, Academy for Advanced Interdisciplinary Studies & McGovern Institute for Brain Research, Peking University, Beijing, 100871, China
| | - Jiahong Gao
- Center for MRI Research, Academy for Advanced Interdisciplinary Studies & McGovern Institute for Brain Research, Peking University, Beijing, 100871, China
| | - Yong He
- State Key Laboratory of Cognitive Neuroscience and Learning & IDG/McGovern Institute for Brain Research, Beijing Normal University, Beijing, 100875, China.,Key Laboratory of Beijing Key Laboratory of Brain Imaging and Connectomics, Beijing Normal University, Beijing, 100875, China
| | - Sha Tao
- State Key Laboratory of Cognitive Neuroscience and Learning & IDG/McGovern Institute for Brain Research, Beijing Normal University, Beijing, 100875, China
| | - Qi Dong
- State Key Laboratory of Cognitive Neuroscience and Learning & IDG/McGovern Institute for Brain Research, Beijing Normal University, Beijing, 100875, China
| | - Shaozheng Qin
- State Key Laboratory of Cognitive Neuroscience and Learning & IDG/McGovern Institute for Brain Research, Beijing Normal University, Beijing, 100875, China.,Key Laboratory of Beijing Key Laboratory of Brain Imaging and Connectomics, Beijing Normal University, Beijing, 100875, China.,Chinese Institute for Brain Research, Beijing, 102206, China
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13
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Patisaul HB. REPRODUCTIVE TOXICOLOGY: Endocrine disruption and reproductive disorders: impacts on sexually dimorphic neuroendocrine pathways. Reproduction 2021; 162:F111-F130. [PMID: 33929341 PMCID: PMC8484365 DOI: 10.1530/rep-20-0596] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Accepted: 04/30/2021] [Indexed: 11/08/2022]
Abstract
We are all living with hundreds of anthropogenic chemicals in our bodies every day, a situation that threatens the reproductive health of present and future generations. This review focuses on endocrine-disrupting compounds (EDCs), both naturally occurring and man-made, and summarizes how they interfere with the neuroendocrine system to adversely impact pregnancy outcomes, semen quality, age at puberty, and other aspects of human reproductive health. While obvious malformations of the genitals and other reproductive organs are a clear sign of adverse reproductive health outcomes and injury to brain sexual differentiation, the hypothalamic-pituitary-gonadal (HPG) axis can be much more difficult to discern, particularly in humans. It is well-established that, over the course of development, gonadal hormones shape the vertebrate brain such that sex-specific reproductive physiology and behaviors emerge. Decades of work in neuroendocrinology have elucidated many of the discrete and often very short developmental windows across pre- and postnatal development in which this occurs. This has allowed toxicologists to probe how EDC exposures in these critical windows can permanently alter the structure and function of the HPG axis. This review includes a discussion of key EDC principles including how latency between exposure and the emergence of consequential health effects can be long, along with a summary of the most common and less well-understood EDC modes of action. Extensive examples of how EDCs are impacting human reproductive health, and evidence that they have the potential for multi-generational physiological and behavioral effects are also provided.
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Affiliation(s)
- Heather B Patisaul
- Department of Biological Sciences, Center for Human Health and the Environment, North Carolina State University, Raleigh, North Carolina, USA
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14
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Kolmogorova D, Ah-Yen EG, Taylor BC, Vaggas T, Liang J, Davis T, Ismail N. Sex-specific responses of the pubertal neuroimmune axis in CD-1 mice. Brain Behav Immun Health 2021; 13:100229. [PMID: 34589744 PMCID: PMC8474685 DOI: 10.1016/j.bbih.2021.100229] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Accepted: 02/18/2021] [Indexed: 12/30/2022] Open
Abstract
The mechanistic relationship between the sexually dimorphic neuroimmune system and the sex-specific outcomes of a pubertal immune challenge is unclear. Therefore, we examined sex differences in the progression of cytotoxic microglial responses and blood-brain barrier (BBB) disruption to a peripubertal lipopolysaccharide (LPS) treatment in brain regions relevant to stress responses and cognitive function. Six-week-old (i.e., stress-sensitive pubertal period) male and female CD-1 mice were treated with LPS (1.5 mg/kg body weight, ip) or 0.9% saline (LPS-matched volume, ip). Sex and treatment differences in microglial (Iba1+) and apoptotic neuronal (caspase-3+/NeuN+) and non-neuronal (caspase-3+/NeuN−) expression were examined in the hippocampus, medial prefrontal cortex (mPFC), and paraventricular nucleus 24 h (sickness), one week (symptomatic recovery) and four weeks (early adulthood) post-treatment (n = 8/group). Microglial morphology was quantified with fractal analyses. Group differences in BBB permeability to 14C-sucrose were examined 24 h (whole-brain, hippocampus, prefrontal cortex, hypothalamus, and cerebellum) and one week (whole-brain) post-treatment. The acute effects of pubertal LPS were specific to females (i.e., global BBB disruption, altered microglial expression and morphology in the mPFC and hippocampus, increased hippocampal apoptosis). The residual effects of pubertal LPS-induced sickness observed in microglia persisted into adulthood in a sex- and region-specific manner. In addition to highlighting these sex-specific responses of the pubertal neuroimmune system, we report baseline region-specific sex differences in microglia spanning puberty through adulthood. We propose that these sex differences in neuroimmune-neurovascular interactions during the stress-sensitive pubertal period create sex biases in stress-related disorders of brain and behaviour. Pubertal LPS alters baseline sex differences in microglial numbers and morphology. Pubertal CD-1 mice mount sexually dimorphic neuroimmune responses to systemic LPS. Treatment effects on microglial expression and morphology differ by sex and region. The acute LPS-induced effects were specific to females.
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Affiliation(s)
- Daria Kolmogorova
- NISE Laboratory, School of Psychology, University of Ottawa, Ottawa, Ontario, Canada
| | - Emily Grace Ah-Yen
- NISE Laboratory, School of Psychology, University of Ottawa, Ottawa, Ontario, Canada
| | | | - Tiffany Vaggas
- School of Biosciences, Cardiff University, Cardiff, Wales, United Kingdom
| | - Jacky Liang
- NISE Laboratory, School of Psychology, University of Ottawa, Ottawa, Ontario, Canada
| | - Tama Davis
- NISE Laboratory, School of Psychology, University of Ottawa, Ottawa, Ontario, Canada
| | - Nafissa Ismail
- NISE Laboratory, School of Psychology, University of Ottawa, Ottawa, Ontario, Canada.,Brain and Mind Research Institute, University of Ottawa, Ottawa, Ontario, Canada
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15
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Wunram HL, Oberste M, Hamacher S, Neufang S, Grote N, Krischer MK, Bloch W, Schönau E, Bender S, Fricke O. Immunological Effects of an Add-On Physical Exercise Therapy in Depressed Adolescents and Its Interplay with Depression Severity. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:6527. [PMID: 34204400 PMCID: PMC8296386 DOI: 10.3390/ijerph18126527] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Revised: 05/26/2021] [Accepted: 05/27/2021] [Indexed: 12/30/2022]
Abstract
BACKGROUND Pro-inflammatory cytokines (PICs) have gained attention in the pathophysiology and treatment of depressive disorders. At the same time, the therapeutic effect of physical activity seems to work via immunomodulatory pathways. The interventional study "Mood Vibes" analyzed the influence of exercise on depression severity (primary endpoint) in depressive adolescents; the influence of PICs on the clinical outcome was analyzed as a secondary endpoint. METHODS Clinically diagnosed depressed adolescents (N = 64; 28.1% male; mean age = 15.9; mean BMI = 24.6) were included and participated either in Whole Body Vibration (WBV) (n = 21) or bicycle ergometer training (n = 20) in addition to treatment-as-usual (TAU). Patients in the control treatment group received TAU only (n = 23). The PICs (interleukin-6-IL-6 and tumor necrosis factor-α-TNF-α) were analyzed before intervention, after 6 weeks of training (t1), and 8 weeks post-intervention (t2). The effects of the treatment on depression severity were rated by self-rating "Depression Inventory for Children and Adolescents" (DIKJ). RESULTS Basal IL-6 decreased in all groups from t0 to t1, but it increased again in WBV and controls at t2. TNF-α diminished in ergometer and controls from baseline to t1. PIC levels showed no correlation with depression severity at baseline. The influence on DIKJ scores over time was significant for IL-6 in the WBV group (p = 0.008). Sex had an impact on TNF-α (p < 0.001), with higher concentrations in male patients. Higher body mass index was associated with higher IL-6 concentrations over all measurement points (p < 0.001). CONCLUSIONS The positive effects of an intensive add-on exercise therapy on adolescent depression seem to be partly influenced by immunomodulation. A small sample size and non-randomized controls are limitations of this study.
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Affiliation(s)
- Heidrun Lioba Wunram
- Department of Child and Adolescent Psychiatry Psychosomatic and Psychotherapy, University Hospital of Cologne, 50937 Cologne, Germany; (N.G.); (M.K.K.); (S.B.)
| | - Max Oberste
- Institute of Medical Statistics and Computational Biology (IMSB), University of Cologne, 50937 Cologne, Germany; (M.O.); (S.H.)
- Department for Molecular and Cellular Sports Medicine, German Sport University Cologne, 50933 Cologne, Germany
| | - Stefanie Hamacher
- Institute of Medical Statistics and Computational Biology (IMSB), University of Cologne, 50937 Cologne, Germany; (M.O.); (S.H.)
| | - Susanne Neufang
- Department of Psychiatry and Psychotherapy, Medical Faculty Heinrich-Heine University, 40225 Düsseldorf, Germany;
| | - Nils Grote
- Department of Child and Adolescent Psychiatry Psychosomatic and Psychotherapy, University Hospital of Cologne, 50937 Cologne, Germany; (N.G.); (M.K.K.); (S.B.)
| | - Maya Kristina Krischer
- Department of Child and Adolescent Psychiatry Psychosomatic and Psychotherapy, University Hospital of Cologne, 50937 Cologne, Germany; (N.G.); (M.K.K.); (S.B.)
| | - Wilhelm Bloch
- Institute of Movement and Neuroscience, German Sport University Cologne, 50933 Cologne, Germany;
| | - Eckhard Schönau
- Children’s Hospital, University Hospital of Cologne & UniReha, University Hospital of Cologne, 50933 Cologne, Germany;
| | - Stephan Bender
- Department of Child and Adolescent Psychiatry Psychosomatic and Psychotherapy, University Hospital of Cologne, 50937 Cologne, Germany; (N.G.); (M.K.K.); (S.B.)
| | - Oliver Fricke
- Department of Child and Adolescent Psychiatry, Psychotherapy and Child Neurology, Gemeinschaftskrankenhaus Herdecke & Chair of Child and Adolescent Psychiatry, Witten/Herdecke University, 58313 Witten/Herdecke, Germany;
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16
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Culbert KM, Sisk CL, Klump KL. A Narrative Review of Sex Differences in Eating Disorders: Is There a Biological Basis? Clin Ther 2021; 43:95-111. [PMID: 33375999 PMCID: PMC7902379 DOI: 10.1016/j.clinthera.2020.12.003] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 12/04/2020] [Accepted: 12/07/2020] [Indexed: 12/12/2022]
Abstract
PURPOSE Eating disorders and their core symptoms (eg, binge eating, body weight/shape concerns) disproportionately affect females, and these sex-differentiated effects become prominent during and after puberty. Although psychosocial influences such as heightened sociocultural pressures for thinness in girls and women contribute to this sex imbalance, biological factors could also play an important role. METHODS This narrative review summarizes evidence of biological factors underlying the sex-differentiated prevalence of eating pathology as well as within-sex variability in risk. FINDINGS There are sex differences in the pubertal emergence of genetic effects on eating pathology (adrenarche in males; gonadarche in females), and at least some genetic contributions to eating pathology seem to vary between the sexes. Furthermore, sex steroid hormones (eg, testosterone, estradiol, progesterone) are leading contributors to differential risk for eating pathology in males and females across the life span. Emerging data suggest that between-sex and within-sex variability in risk might occur via hormone-driven modulation (activation/deactivation) of genetic influences and neural responsiveness to food-related cues. IMPLICATIONS There is a biological basis to heightened risk for eating pathology in females, relative to males, as well as unique biological influences within each sex. Findings from this review highlight the importance of studying both sexes and considering sex-specific biological mechanisms that may underlie differential risk for eating pathology.
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Affiliation(s)
- Kristen M Culbert
- Department of Family Medicine and Public Health Sciences, Wayne State University School of Medicine, Detroit, MI, USA.
| | - Cheryl L Sisk
- Neuroscience Program, Michigan State University, East Lansing, MI, USA
| | - Kelly L Klump
- Department of Psychology, Michigan State University, East Lansing, MI, USA
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17
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Culbert KM, Shope MM, Sisk CL, Klump KL. Low testosterone is associated with dysregulated eating symptoms in young adult men. Int J Eat Disord 2020; 53:1469-1479. [PMID: 32643144 DOI: 10.1002/eat.23320] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2020] [Revised: 05/18/2020] [Accepted: 05/19/2020] [Indexed: 11/08/2022]
Abstract
OBJECTIVE Extant animal and human data indicate that natural variation in circulating levels of testosterone may contribute to differential risk for dysregulated eating among males. Indeed, testosterone ablation in postpubertal male rodents results in stimulatory effects on sweet-taste preferences, and lower levels of circulating testosterone in adolescent boys have been found to predict dysregulated eating symptoms during mid-to-late puberty. Nonetheless, no prior study has examined whether lower testosterone is associated with dysregulated eating in adulthood. The current study examined this possibility. METHOD Participants were 154 young adult men (ages = 18-33) from a large Southwestern University. The Eating Disorder Examination Questionnaire, Eating Pathology Symptoms Inventory, and Loss of Control Over Eating Scale were used to assess three types of dysregulated eating symptoms: eating concerns, binge eating, and loss-of-control eating. Afternoon saliva samples were assayed for testosterone using high-sensitive enzyme immunoassays. RESULTS Consistent with animal data and prior research in adolescent boys, men with lower testosterone reported significantly higher levels of dysregulated eating symptoms even after controlling for depressive symptoms, body mass index, and age. DISCUSSION Lower testosterone concentrations might serve as a sex-specific biological factor that contributes to dysregulated eating among men.
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Affiliation(s)
- Kristen M Culbert
- Department of Family Medicine and Public Health Sciences, Wayne State University School of Medicine, Detroit, Michigan, USA
| | - Megan M Shope
- Department of Psychology, University of Nevada, Las Vegas, Nevada, USA
| | - Cheryl L Sisk
- Neuroscience Program, Michigan State University, East Lansing, Michigan, USA
| | - Kelly L Klump
- Department of Psychology, Michigan State University, East Lansing, Michigan, USA
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18
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Moore SR, Humphreys KL, Colich NL, Davis EG, Lin DTS, MacIsaac JL, Kobor MS, Gotlib IH. Distinctions between sex and time in patterns of DNA methylation across puberty. BMC Genomics 2020; 21:389. [PMID: 32493224 PMCID: PMC7268482 DOI: 10.1186/s12864-020-06789-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Accepted: 05/20/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND There are significant sex differences in human physiology and disease; the genomic sources of these differences, however, are not well understood. During puberty, a drastic neuroendocrine shift signals physical changes resulting in robust sex differences in human physiology. Here, we explore how shifting patterns of DNA methylation may inform these pathways of biological plasticity during the pubertal transition. In this study we analyzed DNA methylation (DNAm) in saliva at two time points across the pubertal transition within the same individuals. Our purpose was to compare two domains of DNAm patterns that may inform processes of sexual differentiation 1) sex related sites, which demonstrated differences between males from females and 2) time related sites in which DNAm shifted significantly between timepoints. We further explored the correlated network structure sex and time related DNAm networks and linked these patterns to pubertal stage, assays of salivary testosterone, a reliable diagnostic of free, unbound hormone that is available to act on target tissues, and overlap with androgen response elements. RESULTS Sites that differed by biological sex were largely independent of sites that underwent change across puberty. Time-related DNAm sites, but not sex-related sites, formed correlated networks that were associated with pubertal stage. Both time and sex DNAm networks reflected salivary testosterone levels that were enriched for androgen response elements, with sex-related DNAm networks being informative of testosterone levels above and beyond biological sex later in the pubertal transition. CONCLUSIONS These results inform our understanding of the distinction between sex- and time-related differences in DNAm during the critical period of puberty and highlight a novel linkage between correlated patterns of sex-related DNAm and levels of salivary testosterone.
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Affiliation(s)
- Sarah Rose Moore
- Department of Medical Genetics, University of British Columbia
- BC Children's Hospital Research Institute, 938 W 28th Ave, Vancouver, BC, V5Z 4H4, Canada.
| | - Kathryn Leigh Humphreys
- Department of Psychology and Human Development, Vanderbilt University, 230 Appleton Pl, Nashville, TN, 37203, USA
| | - Natalie Lisanne Colich
- Department of Psychology, University of Washington Seattle, Guthrie Hall (GTH), 119A 98195-1525, Seattle, WA, 98105, USA
| | - Elena Goetz Davis
- Department of Psychology, Stanford University, 450 Jane Stanford Way, Stanford, CA, 94305, USA
| | - David Tse Shen Lin
- Department of Medical Genetics, University of British Columbia
- BC Children's Hospital Research Institute, 938 W 28th Ave, Vancouver, BC, V5Z 4H4, Canada
| | - Julia Lynn MacIsaac
- Department of Medical Genetics, University of British Columbia
- BC Children's Hospital Research Institute, 938 W 28th Ave, Vancouver, BC, V5Z 4H4, Canada
| | - Michael Steffen Kobor
- Department of Medical Genetics, University of British Columbia
- BC Children's Hospital Research Institute, 938 W 28th Ave, Vancouver, BC, V5Z 4H4, Canada
| | - Ian Henry Gotlib
- Department of Psychology, Stanford University, 450 Jane Stanford Way, Stanford, CA, 94305, USA
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19
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Morishita M, Koiso R, Tsukahara S. Actions of Peripubertal Gonadal Steroids in the Formation of Sexually Dimorphic Brain Regions in Mice. Endocrinology 2020; 161:5821543. [PMID: 32303738 DOI: 10.1210/endocr/bqaa063] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Accepted: 04/16/2020] [Indexed: 11/19/2022]
Abstract
The calbindin-sexually dimorphic nucleus (CALB-SDN) and calbindin-principal nucleus of the bed nucleus of the stria terminalis (CALB-BNSTp) show male-biased sex differences in calbindin neuron number. The ventral part of the BNSTp (BNSTpv) exhibits female-biased sex differences in noncalbindin neuron number. We previously reported that prepubertal gonadectomy disrupts the masculinization of the CALB-SDN and CALB-BNSTp and the feminization of the BNSTpv. This study aimed to determine the action mechanisms of testicular androgens on the masculinization of the CALB-SDN and CALB-BNSTp and whether ovarian estrogens are the hormones that have significant actions in the feminization of the BNSTpv. We performed immunohistochemical analyses of calbindin and NeuN, a neuron marker, in male mice orchidectomized on postnatal day 20 (PD20) and treated with cholesterol, testosterone, estradiol, or dihydrotestosterone during PD20-70, female mice ovariectomized on PD20 and treated with cholesterol or estradiol during PD20-70, and PD70 mice gonadectomized on PD56. Calbindin neurons number in the CALB-SDN and CALB-BNSTp in males treated with testosterone or dihydrotestosterone, but not estradiol, was significantly larger than that in cholesterol-treated males. Noncalbindin neuron number in the BNSTpv in estradiol-treated females was significantly larger than that in cholesterol-treated females. Gonadectomy on PD56 had no significant effect on neuron numbers. Additionally, an immunohistochemical analysis revealed the expression of androgen receptors in the CALB-SDN and CALB-BNSTp of PD30 males and estrogen receptors-α in the BNSTpv of PD30 females. These results suggest that peripubertal testicular androgens act to masculinize the CALB-SDN and CALB-BNSTp without aromatization, and peripubertal ovarian estrogens act to feminize the BNSTpv.
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Affiliation(s)
- Masahiro Morishita
- Division of Life Science, Graduate School of Science and Engineering, Saitama University, Saitama, Japan
| | - Ryoma Koiso
- Division of Life Science, Graduate School of Science and Engineering, Saitama University, Saitama, Japan
| | - Shinji Tsukahara
- Division of Life Science, Graduate School of Science and Engineering, Saitama University, Saitama, Japan
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20
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Martins GW, Chagas GS, Patrício FC, Lira ADO, Fragoso J, Santos AB, Leandro CG. Can the frequency of defensive posture adoption influence the expression of active behavior of adult rats? Behav Processes 2020; 177:104151. [PMID: 32473278 DOI: 10.1016/j.beproc.2020.104151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 04/27/2020] [Accepted: 05/24/2020] [Indexed: 11/29/2022]
Abstract
During the youth, rats spend a long time in play fighting (PF), and asymmetries are observed in terms of the frequency of adoption of the supine posture. This study investigated the effects of asymmetry in adopting supine posture during PF on the time spent in locomotor activity-related contextual behaviors during youth and adulthood. Male Wistar rats were divided into three groups according to the number of times of their adoption of a defensive supine (S) posture: low (LS, n = 10), intermediary (IS, n = 10) and high (HS, n = 10). Rats aged 21-62 days were placed in voluntary physical active cages (VPAC) with running wheels. The time spent in social play (SP), play fighting (PF), voluntary physical activity (VPA), spontaneous physical activity (SPA) and resting (Rest) were recorded daily. During adulthood (63-92 days of age), rats were placed individually in the VPAC, with daily quantification of VPA. The average time spent in PF was not different among the groups, but was age-dependent. LS and IS rats spent more time in VPA than the HS rats, between days 49-62 (intragroup analyses) and 72-78 (individual analyses) days of age. However, LS and IS animals spent less time in SPA than HS rats from 42-48 days of age. In conclusion, the expressions of VPA and SPA are influenced by the asymmetries in adoption of the supine posture of members within a social group, remaining even after the separation of the social groups.
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Affiliation(s)
- Gerffeson Willian Martins
- Department of Physical Education and Sports Science, CAV, Federal University of Pernambuco, 55608-680, Recife, PE, Brazil; Laboratory of Nutrition, Physical Activity and Neuroplasticity - Academic Center of Vitória - Federal University of Pernambuco, Vitória De Santo Antão, 55608-680, PE, Brazil.
| | - Guilherme Souza Chagas
- Department of Physical Education and Sports Science, CAV, Federal University of Pernambuco, 55608-680, Recife, PE, Brazil
| | - Franciele Conceição Patrício
- Department of Physical Education and Sports Science, CAV, Federal University of Pernambuco, 55608-680, Recife, PE, Brazil
| | - Allan de Oliveira Lira
- Department of Nutrition, Federal University of Pernambuco, 50670-901, Recife, PE, Brazil
| | - Jéssica Fragoso
- Department of Nutrition, Federal University of Pernambuco, 50670-901, Recife, PE, Brazil
| | - Adriano Bento Santos
- Department of Physical Education and Sports Science, CAV, Federal University of Pernambuco, 55608-680, Recife, PE, Brazil
| | - Carol Gois Leandro
- Department of Physical Education and Sports Science, CAV, Federal University of Pernambuco, 55608-680, Recife, PE, Brazil; Laboratory of Nutrition, Physical Activity and Neuroplasticity - Academic Center of Vitória - Federal University of Pernambuco, Vitória De Santo Antão, 55608-680, PE, Brazil.
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Hampson E. A brief guide to the menstrual cycle and oral contraceptive use for researchers in behavioral endocrinology. Horm Behav 2020; 119:104655. [PMID: 31843564 DOI: 10.1016/j.yhbeh.2019.104655] [Citation(s) in RCA: 69] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Accepted: 12/08/2019] [Indexed: 12/18/2022]
Abstract
There is increasing evidence that reproductive hormones exert regulatory effects in the central nervous system that can influence behavioral, cognitive, perceptual, affective, and motivational processes. These effects occur in adults and post-pubertal individuals, and can be demonstrated in humans as well as laboratory animals. Large changes in 17β-estradiol and progesterone occur over the ovarian cycle (i.e., the menstrual cycle) and afford a way for researchers to explore the central nervous system (CNS) effects of these hormones under natural physiological conditions. Increasingly, oral contraceptives are also being studied, both as another route to understanding the CNS effects of reproductive hormones and also as pharmacological agents in their own right. This mini-review will summarize the basic physiology of the menstrual cycle and essential facts about oral contraceptives to help novice researchers to use both paradigms effectively.
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Affiliation(s)
- Elizabeth Hampson
- Department of Psychology and Graduate Program in Neuroscience, University of Western Ontario, London, ON N6A 5C2, Canada.
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22
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Beltz AM, Moser JS. Ovarian hormones: a long overlooked but critical contributor to cognitive brain structures and function. Ann N Y Acad Sci 2020; 1464:156-180. [DOI: 10.1111/nyas.14255] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Revised: 08/13/2019] [Accepted: 09/18/2019] [Indexed: 12/23/2022]
Affiliation(s)
- Adriene M. Beltz
- Department of PsychologyUniversity of Michigan Ann Arbor Michigan
| | - Jason S. Moser
- Department of PsychologyMichigan State University East Lansing Michigan
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23
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Gürbüz P, Düzova H, Yildiz A, Çakan P, Kaya GB, Bağ HGG, Durhan M, Gül CC, Taşlidere AÇ. Effects of noopept on cognitive functions and pubertal process in rats with diabetes. Life Sci 2019; 233:116698. [PMID: 31356906 DOI: 10.1016/j.lfs.2019.116698] [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: 06/07/2019] [Revised: 07/24/2019] [Accepted: 07/25/2019] [Indexed: 12/25/2022]
Abstract
AIM Type 1 diabetes (T1DM) is a common chronic disease in childhood. Increasing insulin resistance in puberty gives rise to higher doses of insulin usage in treatment. Of this reason new approaches in treatment are needed. Noopept researches suggest it to have anti-diabetic properties. We tried to determine the effects of noopept on pubertal diabetes. MAIN METHOD The research was made with 60 prepubertal, 28 day-old, male, Sprague Dawley rats. The rats were divided into randomised 6 groups (n = 10/group). i) Control, ii) Diabetes Control, iii) Noopept Control, iv) Diabetes + Noopept, v) Diabetes + Insulin, vi) Diabetes + Insulin + Noopept. T1DM model was induced by streptozotocin on postnatal 28th day. 0.5 mg/kg noopept and 1 IU insulin were administered intraperitoneally for 14 days. Blood glucose and body weight measurements, puberty follow-up and MWM tests were performed. Hippocampus, hypothalamus and testis were evaluated histologically. Hypothalamic GnRH and kisspeptin were studied immunohistochemically. Serum LH, FSH and insulin, hippocampal homogenate NGF and BDNF levels were determined by ELISA. KEY FINDINGS Delayed puberty was normalized by noopept (p < 0.05). Blood glucose levels were lower in noopept-administered diabetic groups (p < 0.05). Noopept decreased HOMA-IR in insulin administered diabetic group (p < 0.05). Number of degenerated cells in hippocampus and testis were higher in diabetes control group when compared with other groups (p < 0.05). GnRH immunoreactivity in Diabetes + Noopept group was increased when compared to insulin + noopept group (p = 0.018). There was no difference in kisspeptin, serum LH, FSH, hippocampal NGF-BDNF levels and spatial learning assessment among groups (p > 0.05). SIGNIFICANCE Noopept may have positive effect in treatment of pubertal diabetes.
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Affiliation(s)
- Perihan Gürbüz
- Inonu University, Faculty of Medicine, Department of Physiology, Malatya, Turkey.
| | - Halil Düzova
- Inonu University, Faculty of Medicine, Department of Physiology, Malatya, Turkey
| | - Azibe Yildiz
- Inonu University, Faculty of Medicine, Department of Histology and Embryology, Malatya, Turkey
| | - Pınar Çakan
- Inonu University, Faculty of Medicine, Department of Physiology, Malatya, Turkey
| | - Gül Büşra Kaya
- Inonu University, Faculty of Medicine, Department of Physiology, Malatya, Turkey
| | - Harika Gözde Gözükara Bağ
- Inonu University, Faculty of Medicine, Department of Biostatistics and Medical Informatics, Malatya, Turkey
| | - Merve Durhan
- Inonu University, Faculty of Medicine, Department of Medical Biology and Genetics, Malatya, Turkey
| | - Cemile Ceren Gül
- Inonu University, Faculty of Medicine, Department of Histology and Embryology, Malatya, Turkey
| | - Aslı Çetin Taşlidere
- Inonu University, Faculty of Medicine, Department of Histology and Embryology, Malatya, Turkey
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24
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Luoto S, Krams I, Rantala MJ. A Life History Approach to the Female Sexual Orientation Spectrum: Evolution, Development, Causal Mechanisms, and Health. ARCHIVES OF SEXUAL BEHAVIOR 2019; 48:1273-1308. [PMID: 30229521 DOI: 10.1007/s10508-018-1261-0] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2017] [Revised: 05/29/2018] [Accepted: 06/14/2018] [Indexed: 05/12/2023]
Abstract
Women's capacity for sexual fluidity is at least as interesting a phenomenon from the point of view of evolutionary biology and behavioral endocrinology as exclusively homosexual orientation. Evolutionary hypotheses for female nonheterosexuality have failed to fully account for the existence of these different categories of nonheterosexual women, while also overlooking broader data on the causal mechanisms, physiology, ontogeny, and phylogeny of female nonheterosexuality. We review the evolutionary-developmental origins of various phenotypes in the female sexual orientation spectrum using the synergistic approach of Tinbergen's four questions. We also present femme-specific and butch-specific hypotheses at proximate and ultimate levels of analysis. This review article indicates that various nonheterosexual female phenotypes emerge from and contribute to hormonally mediated fast life history strategies. Life history theory provides a biobehavioral explanatory framework for nonheterosexual women's masculinized body morphology, psychological dispositions, and their elevated likelihood of experiencing violence, substance use, obesity, teenage pregnancy, and lower general health. This pattern of life outcomes can create a feedback loop of environmental unpredictability and harshness which destabilizes intrauterine hormonal conditions in mothers, leading to a greater likelihood of fast life history strategies, global health problems, and nonheterosexual preferences in female offspring. We further explore the potential of female nonheterosexuality to function as an alloparental buffer that enables masculinizing alleles to execute their characteristic fast life history strategies as they appear in the female and the male phenotype. Synthesizing life history theory with the female sexual orientation spectrum enriches existing scientific knowledge on the evolutionary-developmental mechanisms of human sex differences.
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Affiliation(s)
- Severi Luoto
- English, Drama and Writing Studies, University of Auckland, Arts 1, Building 206, Room 616, 14A Symonds St., Auckland, 1010, New Zealand.
- School of Psychology, University of Auckland, Auckland, New Zealand.
| | - Indrikis Krams
- Department of Zoology and Animal Ecology, University of Latvia, Riga, Latvia
- Institute of Ecology and Earth Sciences, University of Tartu, Tartu, Estonia
| | - Markus J Rantala
- Department of Biology & Turku Brain and Mind Center, University of Turku, Turku, Finland
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25
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Abstract
Nobel laureate Nikolaas Tinbergen provided clear criteria for declaring a neuroscience problem solved, criteria which despite the passage of more than 50 years and vastly expanded neuroscience tool kits remain applicable today. Tinbergen said for neuroscientists to claim that a behavior is understood, they must correspondingly understand its (i) development and its (ii) mechanisms and its (iii) function and its (iv) evolution. Now, all four of these domains represent hotbeds of current experimental work, each using arrays of new techniques which overlap only partly. Thus, as new methodologies come online, from single-nerve-cell RNA sequencing, for example, to smart FISH, large-scale calcium imaging from cortex and deep brain structures, computational ethology, and so on, one person, however smart, cannot master everything. Our response to the likely “fracturing” of neuroscience recognizes the value of ever larger consortia. This response suggests new kinds of problems for (i) funding and (ii) the fair distribution of credit, especially for younger scientists.
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26
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Molina-García L, Barrios A. Sex differences in learning — shared principles across taxa. CURRENT OPINION IN PHYSIOLOGY 2018. [DOI: 10.1016/j.cophys.2018.05.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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27
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Hodges TE, Louth EL, Bailey CDC, McCormick CM. Adolescent social instability stress alters markers of synaptic plasticity and dendritic structure in the medial amygdala and lateral septum in male rats. Brain Struct Funct 2018; 224:643-659. [DOI: 10.1007/s00429-018-1789-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Accepted: 11/03/2018] [Indexed: 10/27/2022]
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28
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Arnocky S, Carré JM, Bird BM, Moreau BJP, Vaillancourt T, Ortiz T, Marley N. The Facial Width-to-Height Ratio Predicts Sex Drive, Sociosexuality, and Intended Infidelity. ARCHIVES OF SEXUAL BEHAVIOR 2018; 47:1375-1385. [PMID: 28929303 DOI: 10.1007/s10508-017-1070-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Revised: 03/18/2017] [Accepted: 08/29/2017] [Indexed: 05/09/2023]
Abstract
Previous research has linked the facial width-to-height ratio (FWHR) to a host of psychological and behavioral characteristics, primarily in men. In two studies, we examined novel links between FWHR and sex drive. In Study 1, a sample of 145 undergraduate students revealed that FWHR positively predicted sex drive. There were no significant FWHR × sex interactions, suggesting that FWHR is linked to sexuality among both men and women. Study 2 replicated and extended these findings in a sample of 314 students collected from a different Canadian city, which again demonstrated links between the FWHR and sex drive (also in both men and women), as well as sociosexuality and intended infidelity (men only). Internal meta-analytic results confirm the link between FWHR and sex drive among both men and women. These results suggest that FWHR may be an important morphological index of human sexuality.
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Affiliation(s)
- Steven Arnocky
- Department of Psychology, Nipissing University, North Bay, ON, P1B 8L7, Canada.
| | - Justin M Carré
- Department of Psychology, Nipissing University, North Bay, ON, P1B 8L7, Canada
| | - Brian M Bird
- Department of Psychology, Simon Fraser University, Burnaby, BC, Canada
| | - Benjamin J P Moreau
- Medical Sciences, Northern Ontario School of Medicine, Thunder Bay, ON, Canada
| | - Tracy Vaillancourt
- Counselling Psychology, Faculty of Education, University of Ottawa, Ottawa, ON, Canada
| | - Triana Ortiz
- Department of Psychology, Nipissing University, North Bay, ON, P1B 8L7, Canada
| | - Nicole Marley
- Department of Psychology, Nipissing University, North Bay, ON, P1B 8L7, Canada
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29
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Importance of investing in adolescence from a developmental science perspective. Nature 2018; 554:441-450. [PMID: 29469094 DOI: 10.1038/nature25770] [Citation(s) in RCA: 422] [Impact Index Per Article: 70.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Accepted: 01/23/2018] [Indexed: 12/17/2022]
Abstract
This review summarizes the case for investing in adolescence as a period of rapid growth, learning, adaptation, and formational neurobiological development. Adolescence is a dynamic maturational period during which young lives can pivot rapidly-in both negative and positive directions. Scientific progress in understanding adolescent development provides actionable insights into windows of opportunity during which policies can have a positive impact on developmental trajectories relating to health, education, and social and economic success. Given current global changes and challenges that affect adolescents, there is a compelling need to leverage these advances in developmental science to inform strategic investments in adolescent health.
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30
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Webb E, Moon J, Dyrszka L, Rodriguez B, Cox C, Patisaul H, Bushkin S, London E. Neurodevelopmental and neurological effects of chemicals associated with unconventional oil and natural gas operations and their potential effects on infants and children. REVIEWS ON ENVIRONMENTAL HEALTH 2018; 33:3-29. [PMID: 29068792 DOI: 10.1515/reveh-2017-0008] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Accepted: 07/28/2017] [Indexed: 05/05/2023]
Abstract
Heavy metals (arsenic and manganese), particulate matter (PM), benzene, toluene, ethylbenzene, xylenes (BTEX), polycyclic aromatic hydrocarbons (PAHs) and endocrine disrupting chemicals (EDCs) have been linked to significant neurodevelopmental health problems in infants, children and young adults. These substances are widely used in, or become byproducts of unconventional oil and natural gas (UOG) development and operations. Every stage of the UOG lifecycle, from well construction to extraction, operations, transportation and distribution can lead to air and water contamination. Residents near UOG operations can suffer from increased exposure to elevated concentrations of air and water pollutants. Here we focus on five air and water pollutants that have been associated with potentially permanent learning and neuropsychological deficits, neurodevelopmental disorders and neurological birth defects. Given the profound sensitivity of the developing brain and central nervous system, it is reasonable to conclude that young children who experience frequent exposure to these pollutants are at particularly high risk for chronic neurological diseases. More research is needed to understand the extent of these concerns in the context of UOG, but since UOG development has expanded rapidly in recent years, the need for public health prevention techniques, well-designed studies and stronger state and national regulatory standards is becoming increasingly apparent.
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Affiliation(s)
- Ellen Webb
- Center for Environmental Health, 2201 Broadway, Suite 302, Oakland, CA 94612, USA
| | | | - Larysa Dyrszka
- Physicians for Social Responsibility, Glen Spey, NY, USA
| | | | - Caroline Cox
- Center for Environmental Health, Oakland, CA, USA
| | - Heather Patisaul
- North Carolina State University College of Sciences, Raleigh, NC, USA
| | - Sheila Bushkin
- Institute for Health and the Environment, Albany, NY, USA
| | - Eric London
- Institute for Basic Research, New York, NY, USA
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31
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Albin RL. Tourette syndrome: a disorder of the social decision-making network. Brain 2018; 141:332-347. [PMID: 29053770 PMCID: PMC5837580 DOI: 10.1093/brain/awx204] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Revised: 06/08/2017] [Accepted: 07/21/2017] [Indexed: 12/11/2022] Open
Abstract
Tourette syndrome is a common neurodevelopmental disorder defined by characteristic involuntary movements, tics, with both motor and phonic components. Tourette syndrome is usually conceptualized as a basal ganglia disorder, with an emphasis on striatal dysfunction. While considerable evidence is consistent with these concepts, imaging data suggest diffuse functional and structural abnormalities in Tourette syndrome brain. Tourette syndrome exhibits features that are difficult to explain solely based on basal ganglia circuit dysfunctions. These features include the natural history of tic expression, with typical onset of tics around ages 5 to 7 years and exacerbation during the peri-pubertal years, marked sex disparity with higher male prevalence, and the characteristic distribution of tics. The latter are usually repetitive, somewhat stereotyped involuntary eye, facial and head movements, and phonations. A major functional role of eye, face, and head movements is social signalling. Prior work in social neuroscience identified a phylogenetically conserved network of sexually dimorphic subcortical nuclei, the Social Behaviour Network, mediating many social behaviours. Social behaviour network function is modulated developmentally by gonadal steroids and social behaviour network outputs are stereotyped sex and species specific behaviours. In 2011 O'Connell and Hofmann proposed that the social behaviour network interdigitates with the basal ganglia to form a greater network, the social decision-making network. The social decision-making network may have two functionally complementary limbs: the basal ganglia component responsible for evaluation of socially relevant stimuli and actions with the social behaviour network component responsible for the performance of social acts. Social decision-making network dysfunction can explain major features of the neurobiology of Tourette syndrome. Tourette syndrome may be a disorder of social communication resulting from developmental abnormalities at several levels of the social decision-making network. The social decision-making network dysfunction hypothesis suggests new avenues for research in Tourette syndrome and new potential therapeutic targets.
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Affiliation(s)
- Roger L Albin
- Department of Neurology, University of Michigan, Ann Arbor, MI, 48109, USA
- Neurology Service and GRECC, VAAAHS, Ann Arbor, MI, 48105, USA
- University of Michigan Morris K. Udall Parkinson’s Disease Research Center, University of Michigan, Ann Arbor, MI 48109, USA
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32
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Suleiman AB, Galván A, Harden KP, Dahl RE. Becoming a sexual being: The 'elephant in the room' of adolescent brain development. Dev Cogn Neurosci 2017; 25:209-220. [PMID: 27720399 PMCID: PMC6987766 DOI: 10.1016/j.dcn.2016.09.004] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2016] [Revised: 08/25/2016] [Accepted: 09/26/2016] [Indexed: 12/11/2022] Open
Abstract
The onset of adolescence is a time of profound changes in motivation, cognition, behavior, and social relationships. Existing neurodevelopmental models have integrated our current understanding of adolescent brain development; however, there has been surprisingly little focus on the importance of adolescence as a sensitive period for romantic and sexual development. As young people enter adolescence, one of their primary tasks is to gain knowledge and experience that will allow them to take on the social roles of adults, including engaging in romantic and sexual relationships. By reviewing the relevant human and animal neurodevelopmental literature, this paper highlights how we should move beyond thinking of puberty as simply a set of somatic changes that are critical for physical reproductive maturation. Rather, puberty also involves a set of neurobiological changes that are critical for the social, emotional, and cognitive maturation necessary for reproductive success. The primary goal of this paper is to broaden the research base and dialogue about adolescent romantic and sexual development, in hopes of advancing understanding of sex and romance as important developmental dimensions of health and well-being in adolescence.
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Affiliation(s)
- Ahna Ballonoff Suleiman
- University of California Berkeley-Institute for Human Development, 1121 Tolman Hall #1690, Berkeley, CA 94720-1690, USA.
| | - Adriana Galván
- University of California Los Angeles, Department of Psychology, 1285 Franz Hall, Box 951563 Los Angeles, CA 90095-1563, USA
| | - K Paige Harden
- University of Austin, Texas, Population Research Center, 305 E. 23rd St., Stop G1800, Austin, TX 78712-1699, USA
| | - Ronald E Dahl
- University of California Berkeley-Institute for Human Development, 1121 Tolman Hall #1690, Berkeley, CA 94720-1690, USA
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33
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Patisaul HB. Endocrine disruption by dietary phyto-oestrogens: impact on dimorphic sexual systems and behaviours. Proc Nutr Soc 2017; 76:130-144. [PMID: 27389644 PMCID: PMC5646220 DOI: 10.1017/s0029665116000677] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A wide range of health benefits have been ascribed to soya intake including a lowered risk of osteoporosis, heart disease, breast cancer, and menopausal symptoms. Because it is a hormonally active diet, however, soya can also be endocrine disrupting, suggesting that intake has the potential to cause adverse health effects in certain circumstances, particularly when exposure occurs during development. Consequently, the question of whether or not soya phyto-oestrogens are beneficial or harmful to human health is neither straightforward nor universally applicable to all groups. Possible benefits and risks depend on age, health status, and even the presence or absence of specific gut microflora. As global consumption increases, greater awareness and consideration of the endocrine-disrupting properties of soya by nutrition specialists and other health practitioners is needed. Consumption by infants and small children is of particular concern because their hormone-sensitive organs, including the brain and reproductive system, are still undergoing sexual differentiation and maturation. Thus, their susceptibility to the endocrine-disrupting activities of soya phyto-oestrogens may be especially high. As oestrogen receptor partial agonists with molecular and cellular properties similar to anthropogenic endocrine disruptors such as bisphenol A, the soya phyto-oestrogens provide an interesting model for how attitudes about what is 'synthetic' v. what is 'natural,' shapes understanding and perception of what it means for a compound to be endocrine disrupting and/or potentially harmful. This review describes the endocrine-disrupting properties of soya phyto-oestrogens with a focus on neuroendocrine development and behaviour.
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Affiliation(s)
- Heather B Patisaul
- Department of Biological Sciences,Center for Human Health and the Environment,NC State University,Raleigh,NC 27695,USA
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34
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Ding X, Li X, Shu Q, Wu R, Hu G, Li M. Time-dependent sensitization of antipsychotic effect in adolescent male and female rats. Behav Brain Res 2017; 328:186-194. [PMID: 28412306 DOI: 10.1016/j.bbr.2017.04.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Revised: 04/05/2017] [Accepted: 04/07/2017] [Indexed: 12/28/2022]
Abstract
Many behavioral and biological effects of a psychoactive drug often undergo time-dependent change following even one single drug exposure. The present study examined whether one or two exposures of haloperidol, olanzapine or clozapine would also induce a time-dependent change in their behavioral effects in adolescent rats, and whether such a change vary between sexes. Adolescent Sprague-Dawley rats (<40days old) were first treated with one single injection of haloperidol (0.05 and 0.1mg/kg, sc), clozapine (10.0 and 20.0mg/kg, sc), 2 injections of olanzapine (1.0 and 2.0mg/kg, sc) or vehicle, and tested in a conditioned avoidance response (CAR) model or a PCP (3.20mg/kg, sc)-induced hyperlocomotion model to assess the drug's antipsychotic-like behavioral effects. One or three weeks later, rats were challenged with the drug and their avoidance responses and the PCP-induced hyperlocomotion were re-assessed. One-trial haloperidol and 2-trial olanzapine induced a sensitization, while 1-trial clozapine induced a tolerance effect. The 1-trial haloperidol sensitization was significantly higher at the 3-week time point than at 1-week point, especially in the females. Clozapine tolerance in the conditioned avoidance response model also exhibited the time-dependent increase in both sex groups. Olanzapine sensitization in the PCP model showed a time-dependent change in a sex-dependent fashion. Overall, the time-dependent antipsychotic sensitization and tolerance can be demonstrated in adolescent animals. Many pharmacological (e.g. specific drugs, drug doses), individual (e.g. male versus female) and environmental (e.g. specific behavioral models) factors play a role in the modulation of the strength of antipsychotic sensitization and tolerance.
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Affiliation(s)
- Xiaojing Ding
- Jiangsu Key Laboratory of Neurodegeneration, Department of Pharmacology, Nanjing University of Chinese Medicine, 138 Xianlin Avenue, Nanjing, Jiangsu 210023, China; Department of Psychology, University of Nebraska-Lincoln, Lincoln, NE 68588-0308, USA
| | - Xiaonan Li
- Jiangsu Key Laboratory of Neurodegeneration, Department of Pharmacology, Nanjing Medical University, 140 Hanzhong Road, Nanjing, Jiangsu 210029, China; Department of Psychology, University of Nebraska-Lincoln, Lincoln, NE 68588-0308, USA
| | - Qing Shu
- Department of Pharmacology, The Affiliated Drum Tower Hospital of Nanjing University Medical School, 321 Zhongshan Road, Nanjing 210008, China; Department of Psychology, University of Nebraska-Lincoln, Lincoln, NE 68588-0308, USA
| | - Ruiyong Wu
- College of Bioscience and Biotechnology, Yangzhou University, Yangzhou, Jiangsu 225009, China; Department of Psychology, University of Nebraska-Lincoln, Lincoln, NE 68588-0308, USA
| | - Gang Hu
- Jiangsu Key Laboratory of Neurodegeneration, Department of Pharmacology, Nanjing University of Chinese Medicine, 138 Xianlin Avenue, Nanjing, Jiangsu 210023, China; Jiangsu Key Laboratory of Neurodegeneration, Department of Pharmacology, Nanjing Medical University, 140 Hanzhong Road, Nanjing, Jiangsu 210029, China.
| | - Ming Li
- Department of Psychology, University of Nebraska-Lincoln, Lincoln, NE 68588-0308, USA.
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35
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Nelson EE. Learning through the ages: How the brain adapts to the social world across development. COGNITIVE DEVELOPMENT 2017. [DOI: 10.1016/j.cogdev.2017.02.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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36
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Hodes GE, Walker DM, Labonté B, Nestler EJ, Russo SJ. Understanding the epigenetic basis of sex differences in depression. J Neurosci Res 2017; 95:692-702. [PMID: 27870456 PMCID: PMC5130105 DOI: 10.1002/jnr.23876] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Revised: 07/13/2016] [Accepted: 07/14/2016] [Indexed: 12/27/2022]
Abstract
Epigenetics refers to potentially heritable processes that can mediate both lasting and transient changes in gene expression in the absence of genome sequence alterations. The field of epigenetics has introduced a novel understanding of the mechanisms through which the environment can shape an individual and potentially its offspring. This Mini-Review examines the current literature exploring the role of epigenetics in the development of mood disorders such as depression. Depression is twofold more common in females, yet the majority of preclinical research has been conducted exclusively in male subjects. Here we discuss what is known about sex differences in epigenetic regulation and function and how this may contribute to the etiology and onset of mood disorders. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Georgia E. Hodes
- Fishberg Department of Neuroscience and Freidman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, New York 10029
| | - Deena M. Walker
- Fishberg Department of Neuroscience and Freidman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, New York 10029
| | - Benoit Labonté
- Fishberg Department of Neuroscience and Freidman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, New York 10029
| | - Eric J. Nestler
- Fishberg Department of Neuroscience and Freidman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, New York 10029
| | - Scott J. Russo
- Fishberg Department of Neuroscience and Freidman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, New York 10029
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Koss WA, Frick KM. Sex differences in hippocampal function. J Neurosci Res 2016; 95:539-562. [DOI: 10.1002/jnr.23864] [Citation(s) in RCA: 99] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2016] [Revised: 06/28/2016] [Accepted: 07/11/2016] [Indexed: 12/25/2022]
Affiliation(s)
- Wendy A. Koss
- Department of Psychology; University of Wisconsin-Milwaukee; Milwaukee Wisconsin
| | - Karyn M. Frick
- Department of Psychology; University of Wisconsin-Milwaukee; Milwaukee Wisconsin
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Guyer AE, Silk JS, Nelson EE. The neurobiology of the emotional adolescent: From the inside out. Neurosci Biobehav Rev 2016; 70:74-85. [PMID: 27506384 PMCID: PMC5074886 DOI: 10.1016/j.neubiorev.2016.07.037] [Citation(s) in RCA: 146] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2015] [Revised: 06/01/2016] [Accepted: 06/16/2016] [Indexed: 12/20/2022]
Abstract
Adolescents are commonly portrayed as highly emotional, with their behaviors often hijacked by their emotions. Research on the neural substrates of adolescent affective behavior is beginning to paint a more nuanced picture of how neurodevelopmental changes in brain function influence affective behavior, and how these influences are modulated by external factors in the environment. Recent neurodevelopmental models suggest that the brain is designed to promote emotion regulation, learning, and affiliation across development, and that affective behavior reciprocally interacts with age-specific social demands and different social contexts. In this review, we discuss current findings on neurobiological mechanisms of adolescents' affective behavior and highlight individual differences in and social-contextual influences on adolescents' emotionality. Neurobiological mechanisms of affective processes related to anxiety and depression are also discussed as examples. As the field progresses, it will be critical to test new hypotheses generated from the foundational empirical and conceptual work and to focus on identifying more precisely how and when neural networks change in ways that promote or thwart adaptive affective behavior during adolescence.
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Affiliation(s)
- Amanda E Guyer
- Department of Human Ecology and Center for Mind and Brain, University of California, Davis, CA 95618, United States.
| | - Jennifer S Silk
- Department of Psychology, University of Pittsburgh, Pittsburgh, PA 15260, United States
| | - Eric E Nelson
- Section on Developmental Affective Neuroscience, National Institute of Mental Health, Bethesda, MD 20892, United States
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Callens N, Van Kuyk M, van Kuppenveld JH, Drop SLS, Cohen-Kettenis PT, Dessens AB. Recalled and current gender role behavior, gender identity and sexual orientation in adults with Disorders/Differences of Sex Development. Horm Behav 2016; 86:8-20. [PMID: 27576114 DOI: 10.1016/j.yhbeh.2016.08.008] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Revised: 08/24/2016] [Accepted: 08/25/2016] [Indexed: 01/08/2023]
Abstract
The magnitude of sex differences in human brain and behavior and the respective contributions of biology versus socialization remain a topic of ongoing study in science. The preponderance of evidence attests to the notion that sexual differentiation processes are at least partially hormonally mediated, with high levels of prenatal androgens facilitating male-typed and inhibiting female-typed behaviors. In individuals with Disorders/Differences of Sex Development (DSD), hormonal profiles or sensitivities have been altered due to genetic influences, presumably affecting gender(ed) activity interests as well as gender identity development in a minority of the affected population. While continued postnatal androgen exposure in a number of DSD syndromes has been associated with higher rates of gender dysphoria and gender change, the role of a number of mediating and moderating factors, such as initial gender assignment, syndrome severity and clinical management remains largely unclear. Limited investigations of the associations between these identified influences and gendered development outcomes impede optimization of clinical care. Participants with DSD (n=123), recruited in the context of a Dutch multi-center follow-up audit, were divided in subgroups reflecting prenatal androgen exposure, genital appearance at birth and gender of rearing. Recalled childhood play and playmate preferences, gender identity and sexual orientation were measured with questionnaires and semi-structured interviews. Data were compared to those of control male (n=46) and female participants (n=79). The findings support that (a) prenatal androgen exposure has large effects on (gendered) activity interests, but to a much lesser extent on sexual orientation and that (b) initial gender of rearing remains a better predictor of gender identity contentedness than prenatal androgen exposure, beyond syndrome severity and medical treatment influences. Nonetheless, 3.3% of individuals with DSD in our sample self-reported gender dysphoria from an early age and changed gender, which further underlines the need for thorough long- term follow-up and specific clinical support.
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Affiliation(s)
- Nina Callens
- Department of Pediatrics, Division of Pediatric Endocrinology, University Hospital Ghent and Ghent University, Ghent, Belgium; Department of Pediatrics, Division of Pediatric Endocrinology, Sophia Children's Hospital and Erasmus Medical Center, Rotterdam, The Netherlands
| | - Maaike Van Kuyk
- Department of Medical Psychology, Radboud University Medical Center - Amalia Children's Hospital Nijmegen, The Netherlands
| | - Jet H van Kuppenveld
- Department of Medical Psychology, Radboud University Medical Center - Amalia Children's Hospital Nijmegen, The Netherlands
| | - Stenvert L S Drop
- Department of Pediatrics, Division of Pediatric Endocrinology, Sophia Children's Hospital and Erasmus Medical Center, Rotterdam, The Netherlands
| | - Peggy T Cohen-Kettenis
- Department of Medical Psychology and Medical Social Work, Vrije Universiteit Medical Center, Amsterdam, The Netherlands; Center of Expertise on Gender Dysphoria, Vrije Universiteit Medical Center, Amsterdam, The Netherlands
| | - Arianne B Dessens
- Department of Pediatrics, Division of Pediatric Endocrinology, Sophia Children's Hospital and Erasmus Medical Center, Rotterdam, The Netherlands.
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Vigil P, Del Río JP, Carrera BÁ, ArÁnguiz FC, Rioseco H, Cortés ME. Influence of sex steroid hormones on the adolescent brain and behavior: An update. LINACRE QUARTERLY 2016; 83:308-329. [PMID: 27833209 DOI: 10.1080/00243639.2016.1211863] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
This review explains the main effects exerted by sex steroids and other hormones on the adolescent brain. During the transition from puberty to adolescence, these hormones participate in the organizational phenomena that structurally shape some brain circuits. In adulthood, this will propitiate some specific behavior as responses to the hormones now activating those neural circuits. Adolescence is, then, a critical "organizational window" for the brain to develop adequately, since steroid hormones perform important functions at this stage. For this reason, the adolescent years are very important for future behaviors in human beings. Changes that occur or fail to occur during adolescence will determine behaviors for the rest of one's lifetime. Consequently, understanding the link between adolescent behavior and brain development as influenced by sex steroids and other hormones and compounds is very important in order to interpret various psycho-affective pathologies. Lay Summary : The effect of steroid hormones on the development of the adolescent brain, and therefore, on adolescent behavior, is noticeable. This review presents their main activational and organizational effects. During the transition from puberty to adolescence, organizational phenomena triggered by steroids structurally affect the remodeling of brain circuits. Later in adulthood, these changes will be reflected in behavioral responses to such hormones. Adolescence can then be seen as a fundamental "organizational window" during which sex steroids and other hormones and compounds play relevant roles. The understanding of the relationship between adolescent behavior and the way hormones influence brain development help understand some psychological disorders.
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Affiliation(s)
- Pilar Vigil
- Pontificia Universidad Católica de Chile, Vicerrectoría de Comunicaciones, Santiago, Chile; Biomedical Division, Reproductive Health Research Institute, Santiago, Chile
| | - Juan Pablo Del Río
- Biomedical Division, Reproductive Health Research Institute, Santiago, Chile; Universidad de los Andes, Facultad de Medicina, Escuela de Medicina, Santiago, Chile
| | - BÁrbara Carrera
- Biomedical Division, Reproductive Health Research Institute, Santiago, Chile
| | | | - Hernán Rioseco
- Biomedical Division, Reproductive Health Research Institute, Santiago, Chile
| | - Manuel E Cortés
- Biomedical Division, Reproductive Health Research Institute, Santiago, Chile; Universidad Bernardo O Higgins, Facultad de Salud, Departamento de Ciencias Químicas y Biológicas, Santiago, Chile
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