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Obesity and Hypogonadism-A Narrative Review Highlighting the Need for High-Quality Data in Adolescents. CHILDREN-BASEL 2019; 6:children6050063. [PMID: 31052376 PMCID: PMC6560454 DOI: 10.3390/children6050063] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Revised: 04/26/2019] [Accepted: 04/28/2019] [Indexed: 12/30/2022]
Abstract
The prevalence of obesity continues to rise in adult and pediatric populations throughout the world. Obesity has a direct impact on all organ systems, including the reproductive system. This review summarizes current knowledge about the effects of obesity on the male reproductive system across age, highlighting the need for more data in children and adolescents. Male hypogonadism is commonly seen in patients with obesity and affects the onset, duration, and progression of puberty. Different pathophysiologic mechanisms include increased peripheral conversion of testosterone to estrone and increased inflammation due to increased fat, both of which lead to suppression of the hypothalamic-pituitary-gonadotropin (HPG) axis and delayed development of secondary sexual characteristics in adolescent males. Evaluation of the HPG axis in obesity includes a thorough history to exclude other causes of hypogonadism and syndromic associations. Evaluation should also include investigating the complications of low testosterone, including increased visceral fat, decreased bone density, cardiovascular disease risk, and impaired mood and cognition, among others. The mainstay of treatment is weight reduction, but medications such as testosterone and clomiphene citrate used in adults, remain scarcely used in adolescents. Male hypogonadism associated with obesity is common and providers who care for adolescents and young adults with obesity should be aware of its impact and management.
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Loch Batista R, Inácio M, Prado Arnhold IJ, Gomes NL, Diniz Faria JA, Rodrigues de Moraes D, Frade Costa EM, Domenice S, Bilharinho Mendonça B. Psychosexual Aspects, Effects of Prenatal Androgen Exposure, and Gender Change in 46,XY Disorders of Sex Development. J Clin Endocrinol Metab 2019; 104:1160-1170. [PMID: 30388241 DOI: 10.1210/jc.2018-01866] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Accepted: 10/29/2018] [Indexed: 12/20/2022]
Abstract
CONTEXT In 46,XY disorders of sexual development (DSD) patients, several factors may affect psychosexual development, leading to gender identity discrepancy and gender change later in life. Prenatal sexual steroid exposure and external genital virilization are considered to influence human psychosexual development, but their roles not completely understood yet. DESIGN A total of 144 individuals (18 to 60 years of age) with a clinical/molecular diagnosis of 46,XY DSD from a single tertiary center were enrolled. Psychosexual outcomes (gender role, gender identity, and sexual orientation) were assessed using questionnaires and psychological test. The Sinnecker score was used for genital virilization measurement. Prenatal androgen exposure was estimated according to 46,XY DSD etiology. RESULTS We found a positive association between prenatal androgen exposure and male psychosexual outcomes. Alternatively, prenatal estrogen exposure, age of gonadectomy, and the degree of external genital virilization did not influence any psychosexual outcome. There were 19% (n = 27) with gender change, which was associated with prenatal androgen exposure (P < 0.001) but not with the external genital virilization. The median age of gender change was 15 years, but most of the patients reported the desire for gender change earlier. CONCLUSIONS Prenatal androgen exposure influenced psychosexual development in 46,XY DSD favoring male psychosexuality in all psychosexual outcomes, whereas the degree of external genital virilization did not influence these outcomes. The organizational effect of sexual steroids on psychosexuality at puberty appears to be weak in comparison with the prenatal effects. Prenatal androgen exposure also influenced female-to-male gender change frequency. All 46,XY DSD conditions with prenatal androgen exposure must be followed for gender issues in their management.
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Affiliation(s)
- Rafael Loch Batista
- Developmental Endocrinology Unit, Laboratório de Hormônios e Genética Molecular/LIM42, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Marlene Inácio
- Psychology Department, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Ivo Jorge Prado Arnhold
- Developmental Endocrinology Unit, Laboratório de Hormônios e Genética Molecular/LIM42, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Nathália Lisboa Gomes
- Developmental Endocrinology Unit, Laboratório de Hormônios e Genética Molecular/LIM42, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - José Antônio Diniz Faria
- Developmental Endocrinology Unit, Laboratório de Hormônios e Genética Molecular/LIM42, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Daniela Rodrigues de Moraes
- Developmental Endocrinology Unit, Laboratório de Hormônios e Genética Molecular/LIM42, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Elaine Maria Frade Costa
- Developmental Endocrinology Unit, Laboratório de Hormônios e Genética Molecular/LIM42, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Sorahia Domenice
- Developmental Endocrinology Unit, Laboratório de Hormônios e Genética Molecular/LIM42, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Berenice Bilharinho Mendonça
- Developmental Endocrinology Unit, Laboratório de Hormônios e Genética Molecular/LIM42, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
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Dir AL, Hummer TA, Aalsma MC, Hulvershorn LA. Pubertal influences on neural activation during risky decision-making in youth with ADHD and disruptive behavior disorders. Dev Cogn Neurosci 2019; 36:100634. [PMID: 30889545 PMCID: PMC6560631 DOI: 10.1016/j.dcn.2019.100634] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 02/27/2019] [Accepted: 03/05/2019] [Indexed: 01/24/2023] Open
Abstract
OBJECTIVE Risk-taking during adolescence is a leading cause of mortality; Neuroscience research examining pubertal effects on decision-making is needed to better inform interventions, particularly among youth with attention-deficit/hyperactivity (ADHD) and disruptive behavior disorders (DBD), who are particularly prone to risky decision-making. We examined effects of pubertal development on risky decision-making and neural activation during decision-making among youth with ADHD/DBDs. METHOD Forty-six 11-12-year-olds (29.4% girls; 54.9% white; Tanner M(SD) = 2.08(1.32)) who met DSM-5 criteria for ADHD/DBD completed the Balloon Analog Risk Task (BART) during fMRI scanning. We examined effects of Tanner stage, sex, and age on risky decision-making (mean wager at which individuals stopped balloon inflation) and neural activation in the middle frontal gyrus and the ventral striatum during the choice and outcome phases of decision-making. RESULTS Those in earlier pubertal stages made riskier decisions during the BART compared to those in later Tanner stages (β=-0.62, p = .02). Later pubertal stage was associated with greater activation in the left middle frontal gyrus (β=0.61, p = .03) during the choice phase and in the right ventral striatum in response to rewards (β=0.59, p = .03). CONCLUSION Youth with ADHD/DBD in later stages of puberty, regardless of age, show greater ventral striatal activation in response to rewards.
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Affiliation(s)
- Allyson L Dir
- Department of Pediatrics, Section of Adolescent Medicine, Indiana University School of Medicine, Indianapolis, IN, United States; Adolescent Behavioral Health Research Program, Indiana University School of Medicine, Indianapolis, IN, United States.
| | - Tom A Hummer
- Department of Psychiatry, Indiana University School of Medicine, Indianapolis, IN, United States
| | - Matthew C Aalsma
- Department of Pediatrics, Section of Adolescent Medicine, Indiana University School of Medicine, Indianapolis, IN, United States; Adolescent Behavioral Health Research Program, Indiana University School of Medicine, Indianapolis, IN, United States
| | - Leslie A Hulvershorn
- Adolescent Behavioral Health Research Program, Indiana University School of Medicine, Indianapolis, IN, United States; Department of Psychiatry, Indiana University School of Medicine, Indianapolis, IN, United States
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204
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Downstream consequences of pubertal timing for young women's body beliefs. J Adolesc 2019; 72:162-166. [PMID: 30927567 DOI: 10.1016/j.adolescence.2019.02.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2019] [Revised: 02/24/2019] [Accepted: 02/25/2019] [Indexed: 11/23/2022]
Abstract
INTRODUCTION Puberty is a critical biopsychosocial event that has long-term consequences for adolescents' behavior and well-being. Research has shown that developing earlier than one's peers may worsen adolescent girls' body image, in part due to weight redistribution and increases in adiposity resulting from pubertal development. However, research has yet to examine if pubertal timing is associated with girls' body beliefs related to self-objectification, self-sexualization, and positive body image beyond the adolescent years. We address that issue here. METHODS Participants were 287 undergraduate White women (Mage = 18.62, SDage = 0.93) from the United States who completed surveys containing a retrospective report of pubertal timing and several scales assessing their current body beliefs. RESULTS Regression analyses demonstrated that earlier pubertal timing was linked to greater body surveillance, greater sex appeal self-worth, and less body appreciation, but not to body shame or enjoyment of sexualization, which were negatively related to age. CONCLUSIONS This study provides preliminary evidence that pubertal timing has downstream consequences for a variety of women's body beliefs. However, older women reported less body shame and less enjoyment of sexualization than younger women, suggesting possible age (and not puberty-) related developmental trends in these two body beliefs. These findings highlight a need for future work with larger, more diverse samples and longitudinal data.
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205
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Sharma R, Kearns MM, Sarr F, Ismail N. The adaptive immune and stress responses of adult female CD1 mice following exposure to a viral mimetic. Immunol Lett 2019; 208:30-38. [PMID: 30880119 DOI: 10.1016/j.imlet.2019.03.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Revised: 03/07/2019] [Accepted: 03/11/2019] [Indexed: 01/01/2023]
Abstract
Exposure to a bacterial endotoxin during puberty induces long-term changes to reproductive and non-reproductive behaviours. While the underlying mechanisms remain unknown, we have recently shown that there are age and sex differences in acute immune and stress responses following immune challenge. Given that it is unclear whether viral infections result in similar age and sex differences, the objective of this study was to examine the acute immune and stress responses following exposure to polyinosinic:polycytidylic acid (poly(I:C)), a viral mimetic, in CD1 mice and to investigate the role of gonadal hormones in these responses. CD1 male and female mice underwent sham-surgery or gonadectomy at 5 or 9 weeks of age. Following one week of recovery, at 6 (pubertal group) or 10 (adult group) weeks of age, mice were treated with either saline or poly(I:C). Poly(I:C) treatment induced greater sickness behaviour in males compared to females and increased peripheral corticosterone in adult mice relative to their pubertal counterparts. Changes in body temperature and central c-Fos expression were more prominent in adult females. Gonadectomy worsened poly(I:C)-induced sickness behaviour and altered body temperature in both sexes. The results demonstrate that adult females display the most pronounced acute changes in body temperature, corticosterone release, and c-Fos expression but show the fastest recovery in sickness behavior, indicating that, compared to males, females display an adaptive physiological response following immune stress due to higher circulating estradiol and progesterone.
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Affiliation(s)
- Rupali Sharma
- School of Psychology, Faculty of Social Sciences, University of Ottawa, Canada
| | | | - Fatou Sarr
- School of Psychology, Faculty of Social Sciences, University of Ottawa, Canada
| | - Nafissa Ismail
- School of Psychology, Faculty of Social Sciences, University of Ottawa, Canada.
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206
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Rodriguez-Ruiz C, Muñoz-Reyes JA, Iglesias-Julios M, Sanchez-Pages S, Turiegano E. Sex Affects the Relationship Between Third Party Punishment and Cooperation. Sci Rep 2019; 9:4288. [PMID: 30862895 PMCID: PMC6414674 DOI: 10.1038/s41598-019-40909-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Accepted: 02/22/2019] [Indexed: 11/09/2022] Open
Abstract
Prosocial third-party punishment (3PP) is a punitive behavior against antisocial individuals, which might explain extended cooperativeness in humans. 3PP shows sexual dimorphism, being more frequent in men than in women. We studied whether sexually dimorphic features related to sexual hormones during development (facial dimorphism and 2D:4D) influence the tendency to engage in 3PP in a sample of 511 women and 328 men. After playing a Prisoner's Dilemma, participants had to decide whether to penalize the defection of a third player who had exploited his/her counterpart's cooperation. In line with previous studies, we observe that men are more prone to engage in 3PP than women. We find that this sex difference is due to cooperative men being more likely to punish than cooperative women. In addition, men with higher facial masculinity are less likely to engage in 3PP, whereas no features influence 3PP in women. We discuss the possibility that sex differences in the motivations and fitness implications underlying 3PP might be driving the observed results.
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Affiliation(s)
| | - José Antonio Muñoz-Reyes
- Laboratorio de Comportamiento Animal y Humano, Centro de Estudios Avanzados, Universidad de Playa Ancha, Valparaíso, Chile
| | - Marta Iglesias-Julios
- Champalimaud Neuroscience Programme, Champalimaud Centre for the Unknown, Lisbon, Portugal
| | | | - Enrique Turiegano
- Biology Department, Universidad Autónoma de Madrid. C/Darwin 2, 28029, Madrid, Spain.
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207
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Holman PJ, Baglot SL, Morgan E, Weinberg J. Effects of prenatal alcohol exposure on social competence: Asymmetry in play partner preference among heterogeneous triads of male and female rats. Dev Psychobiol 2019; 61:513-524. [PMID: 30843198 DOI: 10.1002/dev.21842] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Revised: 12/03/2018] [Accepted: 12/27/2018] [Indexed: 01/05/2023]
Abstract
Social behavior deficits associated with prenatal alcohol exposure (PAE) are frequently described in terms of impaired social competence, which can be defined as the effectiveness in social interaction and the ability to employ social skills successfully within different interpersonal contexts. Play behavior-which peaks during adolescence-is critical for developing social competence, as well as for motor, cognitive, and emotional development. Studies of play behavior typically utilize protocols where animals interact in dyads. However, less is understood about how the social environment may shape PAE-related social behavior deficits, particularly in more complex social contexts. Here, we assess play partner preference utilizing a novel approach in which adolescent male and female animals interact within same-sex triads comprised of animals from mixed prenatal treatments to determine how play partner identity and social group composition interact to shape behavior. When triads included one PAE animal and two control animals (i.e., control animals had the option to play either with a fellow control or a PAE playmate), we observed play target asymmetry whereby controls preferentially played with fellow controls. Notably, these results were consistent for triads of both males and females, with subtle differences in frequency of initiations versus reciprocations. We found no play target asymmetry, however, when triads included two PAE animals and one control animal or different configurations of control and pair-fed animals. Taken together, play target asymmetry resulting from ineffective social interactions, including a failure to engage with, respond to, and/or solicit play from control play partners appropriately, suggests that PAE negatively impacts the development of social competence.
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Affiliation(s)
- Parker J Holman
- Department of Cellular & Physiological Sciences, University of British Columbia, Vancouver, BC, Canada
| | - Samantha L Baglot
- Department of Cellular & Physiological Sciences, University of British Columbia, Vancouver, BC, Canada
| | - Erin Morgan
- Department of Cellular & Physiological Sciences, University of British Columbia, Vancouver, BC, Canada
| | - Joanne Weinberg
- Department of Cellular & Physiological Sciences, University of British Columbia, Vancouver, BC, Canada
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208
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Differences in Sensitivity to Environment Depending on Catechol-O-Methyltransferase (COMT) Gene? A Meta-analysis of Child and Adolescent Gene-by-Environment Studies. J Youth Adolesc 2019; 48:655-667. [PMID: 30830534 DOI: 10.1007/s10964-019-01004-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Accepted: 02/18/2019] [Indexed: 12/15/2022]
Abstract
To date, several gene-by-environment (G×E) meta-analyses have been conducted to provide cumulative G×E evidence from previous inconsistent empirical studies; however, these meta-analyses have mainly focused on the serotonin transporter gene (5-HTTLPR). The present study aimed to conduct the first meta-analysis that tested whether and how an important dopaminergic gene-the catechol-O-methyltransferase (COMT) gene contributed to differences in child and adolescent environmental sensitivity. A total of 22 studies with 20,528 participants involving in various developmental outcomes (e.g., externalizing problems, emotional problems, cognitive development and social behaviors) met the inclusion criteria. The pooled effect size of environment-outcome associations in the Met-allele carriers (r = 0.11, 95% CI = [0.07, 0.15], p < .001) did not significantly differ from that in the Val/Val homozygotes (r = 0.14, 95% CI = [0.08, 0.20], p < 0.001) (Qcontrast (1) = 0.37, p = 0.54). The aggregated Liptak-Stouffer Z-score that combined the p-values of the COMT-environment interaction yield a nonsignificant result (p = 0.52). Moreover, outcome domain, sample age, ethnicity and assessment methods for the environment and the outcome did not moderate the effect sizes. Thus far, the COMT Val158Met polymorphism fails to explain the differences in sensitivity to environment. Future studies might incorporate more factors, such as polygenic effects of genetic pathways, epigenetics (EpiG) processing and sexual dimorphism, into the COMT-environment interaction equation.
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209
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Arambula SE, Reinl EL, El Demerdash N, McCarthy MM, Robertson CL. Sex differences in pediatric traumatic brain injury. Exp Neurol 2019; 317:168-179. [PMID: 30831070 DOI: 10.1016/j.expneurol.2019.02.016] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Revised: 02/21/2019] [Accepted: 02/28/2019] [Indexed: 02/08/2023]
Abstract
The response of the developing brain to traumatic injury is different from the response of the mature, adult brain. There are critical developmental trajectories in the young brain, whereby injury can lead to long term functional abnormalities. Emerging preclinical and clinical literature supports the presence of significant sex differences in both the response to and the recovery from pediatric traumatic brain injury (TBI). These sex differences are seen at all pediatric ages, including neonates/infants, pre-pubertal children, and adolescents. As importantly, the response to neuroprotective therapies or treatments can differ between male and females subjects. These sex differences can result from several biologic origins, and may manifest differently during the various phases of brain and body development. Recognizing and understanding these potential sex differences is crucial, and should be considered in both preclinical and clinical studies of pediatric TBI.
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Affiliation(s)
- Sheryl E Arambula
- Department of Pharmacology, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Erin L Reinl
- Department of Pharmacology, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Nagat El Demerdash
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Margaret M McCarthy
- Department of Pharmacology, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Courtney L Robertson
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA; Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA.
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210
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Worthman CM, Dockray S, Marceau K. Puberty and the Evolution of Developmental Science. JOURNAL OF RESEARCH ON ADOLESCENCE : THE OFFICIAL JOURNAL OF THE SOCIETY FOR RESEARCH ON ADOLESCENCE 2019; 29:9-31. [PMID: 30869841 PMCID: PMC6961839 DOI: 10.1111/jora.12411] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
In recent decades, theoretical and methodological advances have operated synergistically to advance understanding of puberty and prompt increasingly comprehensive models that engage with the temporal, psychosocial, and biological dimensions of this maturational milepost. This integrative overview discusses these theoretical and methodological advances and their implications for research and intervention to promote human development in the context of changing maturational schedules and massive ongoing social transformations.
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211
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Aylwin CF, Toro CA, Shirtcliff E, Lomniczi A. Emerging Genetic and Epigenetic Mechanisms Underlying Pubertal Maturation in Adolescence. JOURNAL OF RESEARCH ON ADOLESCENCE : THE OFFICIAL JOURNAL OF THE SOCIETY FOR RESEARCH ON ADOLESCENCE 2019; 29:54-79. [PMID: 30869843 DOI: 10.1111/jora.12385] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The adolescent transition begins with the onset of puberty which, upstream in the brain, is initiated by the gonadotropin-releasing hormone (GnRH) pulse generator that activates the release of peripheral sex hormones. Substantial research in human and animal models has revealed a myriad of cellular networks and heritable genes that control the GnRH pulse generator allowing the individual to begin the process of reproductive competence and sexual maturation. Here, we review the latest knowledge in neuroendocrine pubertal research with emphasis on genetic and epigenetic mechanisms underlying the pubertal transition.
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212
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Erol A, Ho AMC, Winham SJ, Karpyak VM. Sex hormones in alcohol consumption: a systematic review of evidence. Addict Biol 2019; 24:157-169. [PMID: 29280252 PMCID: PMC6585852 DOI: 10.1111/adb.12589] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Revised: 10/20/2017] [Accepted: 11/20/2017] [Indexed: 02/02/2023]
Abstract
Sex hormones play an important role in establishing sex‐distinctive brain structural and functional variations that could contribute to the sex differences in alcohol consumption behavior. Here, we systematically reviewed articles that studied sex hormone impacts on alcohol consumption and alcohol use disorder (AUD). An extensive literature search conducted in MEDLINE, PubMed, Scopus and CINAHL databases identified 776 articles, which were then evaluated for pre‐specified criteria for relevance and quality assurance. A total of 50 articles, including 19 human studies and 31 animal studies, were selected for this review. Existing evidence supports the association of increased testosterone level and increased risk for alcohol use and AUD in males but results are inconclusive in females. In contrast, the evidence supports the association of increased estrogen level and increased alcohol use in females, with mixed findings reported in males. Much less is known about the impact of progestins on alcohol use and misuse in human subjects. Future observational and experimental studies conducted in both sexes with a comprehensive hormone panel are needed to elucidate the impact of the interplay between various sex hormone levels during various developmental stages on alcohol use‐related phenotypes and AUD.
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Affiliation(s)
- Almila Erol
- Department of Psychiatry and Psychology; Mayo Clinic; Rochester MN USA
- Department of Psychiatry; Ataturk Education and Research Hospital; Turkey
| | - Ada M.-C. Ho
- Department of Psychiatry and Psychology; Mayo Clinic; Rochester MN USA
- Department of Molecular Pharmacology and Experimental Therapeutics; Mayo Clinic; Rochester MN USA
| | - Stacey J. Winham
- Department of Health Sciences Research; Mayo Clinic; Rochester MN USA
| | - Victor M. Karpyak
- Department of Psychiatry and Psychology; Mayo Clinic; Rochester MN USA
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213
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Goddings AL, Beltz A, Peper JS, Crone EA, Braams BR. Understanding the Role of Puberty in Structural and Functional Development of the Adolescent Brain. JOURNAL OF RESEARCH ON ADOLESCENCE : THE OFFICIAL JOURNAL OF THE SOCIETY FOR RESEARCH ON ADOLESCENCE 2019; 29:32-53. [PMID: 30869842 DOI: 10.1111/jora.12408] [Citation(s) in RCA: 91] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Over the past two decades, there has been a tremendous increase in our understanding of structural and functional brain development in adolescence. However, understanding the role of puberty in this process has received much less attention. This review examines this relationship by summarizing recent research studies where the role of puberty was investigated in relation to brain structure, connectivity, and task-related functional magnetic resonance imaging (fMRI). The studies together suggest that puberty may contribute to adolescent neural reorganization and maturational advancement, and sex differences also emerge in puberty. The current body of work shows some mixed results regarding impact and exact direction of pubertal influence. We discuss several limitations of current studies and propose future directions on how to move the field forward.
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Affiliation(s)
| | | | - Jiska S Peper
- Leiden University
- Leiden Institute for Brain and Cognition
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214
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Brown JA, Wisco JJ. The components of the adolescent brain and its unique sensitivity to sexually explicit material. J Adolesc 2019; 72:10-13. [PMID: 30754014 DOI: 10.1016/j.adolescence.2019.01.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Revised: 11/18/2018] [Accepted: 01/22/2019] [Indexed: 11/18/2022]
Abstract
INTRODUCTION The focus of this brief literature review is to explore whether there is a relationship between the unique anatomical and physiological paradigms of the adolescent brain and an increased sensitivity to sexually explicit material. METHODS The EBSCO Research Data bases were searched using the following key terms: adolescence, adolescent brain development, neuroplasticity, sexually explicit material, sexualization, and pornography. RESULTS The literature highlighted several components of the adolescent brain that are different than the mature brain. These include: an immature prefrontal cortex and over-responsive limbic and striatal circuits, heightened period for neuroplasticity, overactive dopamine system, a pronounced HPA axis, augmented levels of testosterone, and the unique impact of steroid hormones. The physiological response to sexually explicit material is delineated. The overlap of key areas associated with the unique adolescent brain development and sexually explicit material is noteworthy. A working model summary that compares the response of the adult and adolescent brain to the same sexually explicit stimulus is outlined. CONCLUSIONS The literature suggests that the adolescent brain may indeed be more sensitive to sexually explicit material, but due to a lack of empirical studies this question cannot be answered definitively. Suggestions for future research are given to further advance the work in this applicable field of today.
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Affiliation(s)
| | - Jonathan J Wisco
- Department of Anatomy and Neurobiology, Boston University School of Medicine, Boston, MA 02118, USA; Department of Physiology and Developmental Biology, Neuroscience Center, Brigham Young University, Provo, UT 84602, USA; Department of Neurobiology and Anatomy, University of Utah Medical School, Salt Lake City, UT 84132, USA
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215
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Sharma R, van Mil S, Melanson B, Thomas BJ, Rooke J, Mallet JF, Matar C, Schwarz JM, Ismail N. Programming Effects of Pubertal Lipopolysaccharide Treatment in Male and Female CD-1 Mice. THE JOURNAL OF IMMUNOLOGY 2019; 202:2131-2140. [DOI: 10.4049/jimmunol.1801351] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Accepted: 01/22/2019] [Indexed: 12/22/2022]
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LeMoult J, Humphreys KL, King LS, Colich NL, Price AN, Ordaz SJ, Gotlib IH. Associations Among Early Life Stress, Rumination, Symptoms of Psychopathology, and Sex in Youth in the Early Stages of Puberty: a Moderated Mediation Analysis. JOURNAL OF ABNORMAL CHILD PSYCHOLOGY 2019; 47:199-207. [PMID: 29774495 PMCID: PMC6604804 DOI: 10.1007/s10802-018-0430-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
Despite the high prevalence and substantial costs of early life stress (ELS), the mechanisms through which ELS confers risk for psychopathology are poorly understood, particularly among youth who are in an earlier stage of the transition through puberty. We sought to advance our understanding of the link between ELS and psychopathology by testing whether rumination mediates the relation between ELS and symptoms of psychopathology in youth in the early stages of puberty, and whether sex moderates this mediation. We assessed levels of ELS, both brooding and reflection subtypes of rumination, and internalizing and externalizing symptoms in 170 youth in the early stages of puberty (56% girls) ages 9-13 years. Brooding, but not reflection, mediated the relation between ELS and both internalizing and externalizing symptoms. Importantly, however, sex moderated the relation among ELS, brooding, and symptoms. Specifically, brooding mediated the relation between ELS and both internalizing and externalizing symptoms for girls, but not for boys. Findings support the formulation that brooding is a mechanism linking ELS to multiple forms of behavioral and emotional problems exclusively in girls in the early stages of puberty.
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Affiliation(s)
- Joelle LeMoult
- University of British Columbia, 2136 West Mall, Vancouver, BC, V6T 1Z4, Canada.
| | | | - Lucy S King
- Stanford University, Bldg. 420, Jordan Hall, Stanford, CA, 94305, USA
| | - Natalie L Colich
- Stanford University, Bldg. 420, Jordan Hall, Stanford, CA, 94305, USA
| | | | - Sarah J Ordaz
- Stanford University, Bldg. 420, Jordan Hall, Stanford, CA, 94305, USA
| | - Ian H Gotlib
- Stanford University, Bldg. 420, Jordan Hall, Stanford, CA, 94305, USA
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217
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No evidence for detrimental effect of chemical castration on working ability in Swiss military dogs. Appl Anim Behav Sci 2019. [DOI: 10.1016/j.applanim.2018.10.019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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218
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Sex differences in incentive-sensitization produced by intermittent access cocaine self-administration. Psychopharmacology (Berl) 2019; 236:625-639. [PMID: 30368583 PMCID: PMC6401254 DOI: 10.1007/s00213-018-5091-5] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2018] [Accepted: 10/21/2018] [Indexed: 10/28/2022]
Abstract
RATIONALE Intermittent Access (IntA) cocaine self-administration, which models intermittent patterns of cocaine use in humans during the transition to addiction, is especially effective in producing incentive-sensitization and other addiction-like behavior in male rats. However, female rats show more robust psychomotor sensitization than males, and following initial use, women develop problematic patterns of drug use more readily than men. We hypothesized, therefore, that female rats might be more susceptible to the incentive-sensitization produced by IntA experience. OBJECTIVE To assess changes in motivation for cocaine, using a behavioral economic indicator of cocaine demand ("elasticity" of demand curves), and other addiction-like behavior, as a function of IntA cocaine self-administration experience in male and female rats. RESULTS IntA experience produced a progressive increase in motivation for cocaine in both males and females, as indicated by a decrease in the elasticity of cocaine demand curves, and this persisted undiminished following 14 days of abstinence. However, IntA produced a more rapid and greater increase in motivation for cocaine (incentive-sensitization) in females than males. Females also consumed more cocaine than males, although this did not predict changes in motivation. On the other hand, there were no sex differences in the preferred level of cocaine consumption when cost was low (Q0), nor in cocaine- or cue-induced reinstatement of drug-seeking behavior. CONCLUSIONS The observation that females are more susceptible to incentive-sensitization when intermittently exposed to cocaine may provide a mechanism for the more rapid development of problematic drug use in females ("telescoping effect") reported in clinical studies.
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Carmona S, Martínez-García M, Paternina-Die M, Barba-Müller E, Wierenga LM, Alemán-Gómez Y, Pretus C, Marcos-Vidal L, Beumala L, Cortizo R, Pozzobon C, Picado M, Lucco F, García-García D, Soliva JC, Tobeña A, Peper JS, Crone EA, Ballesteros A, Vilarroya O, Desco M, Hoekzema E. Pregnancy and adolescence entail similar neuroanatomical adaptations: A comparative analysis of cerebral morphometric changes. Hum Brain Mapp 2019; 40:2143-2152. [PMID: 30663172 DOI: 10.1002/hbm.24513] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Revised: 12/18/2018] [Accepted: 01/03/2019] [Indexed: 12/20/2022] Open
Abstract
Mapping the impact of pregnancy on the human brain is essential for understanding the neurobiology of maternal caregiving. Recently, we found that pregnancy leads to a long-lasting reduction in cerebral gray matter volume. However, the morphometric features behind the volumetric reductions remain unexplored. Furthermore, the similarity between these reductions and those occurring during adolescence, another hormonally similar transitional period of life, still needs to be investigated. Here, we used surface-based methods to analyze the longitudinal magnetic resonance imaging data of a group of 25 first-time mothers (before and after pregnancy) and compare them to those of a group of 25 female adolescents (during 2 years of pubertal development). For both first-time mothers and adolescent girls, a monthly rate of volumetric reductions of 0.09 mm3 was observed. In both cases, these reductions were accompanied by decreases in cortical thickness, surface area, local gyrification index, sulcal depth, and sulcal length, as well as increases in sulcal width. In fact, the changes associated with pregnancy did not differ from those that characterize the transition during adolescence in any of these measures. Our findings are consistent with the notion that the brain morphometric changes associated with pregnancy and adolescence reflect similar hormonally primed biological processes.
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Affiliation(s)
- Susanna Carmona
- Sección de Neuroimagen, Laboratorio de Imagen Médica, Centro de Investigación Biomédica en Red de Salud Mental, Madrid, Spain.,Sección de Neuroimagen, Laboratorio de Imagen Médica, Unidad de Medicina y Cirugía Experimental, Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain.,Faculty of Health Sciences, Universitat Oberta de Catalunya, Barcelona, Spain
| | - Magdalena Martínez-García
- Sección de Neuroimagen, Laboratorio de Imagen Médica, Centro de Investigación Biomédica en Red de Salud Mental, Madrid, Spain.,Sección de Neuroimagen, Laboratorio de Imagen Médica, Unidad de Medicina y Cirugía Experimental, Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain
| | - María Paternina-Die
- Sección de Neuroimagen, Laboratorio de Imagen Médica, Unidad de Medicina y Cirugía Experimental, Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain.,Departamento de Bioingeniería e Ingeniería Aeroespacial, Universidad Carlos III de Madrid, Leganés, Spain
| | - Erika Barba-Müller
- Institute of Mental Health Vidal i Barraquer, Ramon Llull University, Barcelona, Spain
| | - Lara M Wierenga
- Brain and Development Laboratory, Leiden University, Leiden, The Netherlands.,Leiden Institute for Brain and Cognition, Leiden University, Leiden, The Netherlands
| | - Yasser Alemán-Gómez
- Center for Psychiatric Neuroscience, Department of Psychiatry, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland.,Department of Radiology, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland
| | - Clara Pretus
- Neuroimaging of mental disorders group, Hospital del Mar Research Institute, Barcelona, Spain.,Unitat de Recerca en Neurociència Cognitiva, Department of Psychiatry and Forensic Medicine, Universitat Autònoma de Barcelona, Spain
| | - Luis Marcos-Vidal
- Sección de Neuroimagen, Laboratorio de Imagen Médica, Unidad de Medicina y Cirugía Experimental, Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain.,Departamento de Bioingeniería e Ingeniería Aeroespacial, Universidad Carlos III de Madrid, Leganés, Spain
| | - Laura Beumala
- Unitat de Recerca en Neurociència Cognitiva, Department of Psychiatry and Forensic Medicine, Universitat Autònoma de Barcelona, Spain
| | - Romina Cortizo
- Unitat de Recerca en Neurociència Cognitiva, Department of Psychiatry and Forensic Medicine, Universitat Autònoma de Barcelona, Spain
| | - Cristina Pozzobon
- Assisted Medicine Reproduction, IVI Clinic Barcelona, Barcelona, Spain
| | - Marisol Picado
- Neuroimaging of mental disorders group, Hospital del Mar Research Institute, Barcelona, Spain.,Unitat de Recerca en Neurociència Cognitiva, Department of Psychiatry and Forensic Medicine, Universitat Autònoma de Barcelona, Spain
| | - Florencio Lucco
- Assisted Medicine Reproduction, IVI Clinic Barcelona, Barcelona, Spain
| | - David García-García
- Sección de Neuroimagen, Laboratorio de Imagen Médica, Unidad de Medicina y Cirugía Experimental, Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain
| | - Juan Carlos Soliva
- Unitat de Recerca en Neurociència Cognitiva, Department of Psychiatry and Forensic Medicine, Universitat Autònoma de Barcelona, Spain
| | - Adolf Tobeña
- Unitat de Recerca en Neurociència Cognitiva, Department of Psychiatry and Forensic Medicine, Universitat Autònoma de Barcelona, Spain
| | - Jiska S Peper
- Brain and Development Laboratory, Leiden University, Leiden, The Netherlands.,Leiden Institute for Brain and Cognition, Leiden University, Leiden, The Netherlands
| | - Eveline A Crone
- Brain and Development Laboratory, Leiden University, Leiden, The Netherlands.,Leiden Institute for Brain and Cognition, Leiden University, Leiden, The Netherlands
| | | | - Oscar Vilarroya
- Neuroimaging of mental disorders group, Hospital del Mar Research Institute, Barcelona, Spain.,Unitat de Recerca en Neurociència Cognitiva, Department of Psychiatry and Forensic Medicine, Universitat Autònoma de Barcelona, Spain
| | - Manuel Desco
- Sección de Neuroimagen, Laboratorio de Imagen Médica, Centro de Investigación Biomédica en Red de Salud Mental, Madrid, Spain.,Sección de Neuroimagen, Laboratorio de Imagen Médica, Unidad de Medicina y Cirugía Experimental, Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain.,Departamento de Bioingeniería e Ingeniería Aeroespacial, Universidad Carlos III de Madrid, Leganés, Spain.,Unidad de Imagen Avanzada, Centro Nacional de Investigaciones Cardiovasculares Carlos III (F.S.P), Madrid, Spain
| | - Elseline Hoekzema
- Brain and Development Laboratory, Leiden University, Leiden, The Netherlands.,Leiden Institute for Brain and Cognition, Leiden University, Leiden, The Netherlands
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220
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Yang D, Zhang W, Zhu Y, Liu P, Tao B, Fu Y, Chen Y, Zhou L, Liu L, Gao X, Liu X, Rubin LH, Sweeney JA, Yan Z. Initiation of the Hypothalamic-Pituitary-Gonadal Axis in Young Girls Undergoing Central Precocious Puberty Exerts Remodeling Effects on the Prefrontal Cortex. Front Psychiatry 2019; 10:332. [PMID: 31133903 PMCID: PMC6524415 DOI: 10.3389/fpsyt.2019.00332] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2019] [Accepted: 04/29/2019] [Indexed: 02/05/2023] Open
Abstract
Central precocious puberty (CPP) has been shown to exert significant effects on psychosocial development. These early puberty-related hormones and psychosocial functional changes are considered to be associated with specific brain development. However, the biological mechanisms underlying the sculpting of human brain architecture and modulation of psychosocial transformation by puberty-related hormonal maturation remain elusive, especially during the early phase of CPP. The current investigation aims to specify the brain regions in which early hormone-related maturation effects occur during CPP and their relationships with psychological functions. 65 young girls (aged 4.3-8.0 years) underwent structural imaging on a 3T MR system, completed psychological tests and performed the gonadotropin-releasing hormone (GnRH) stimulation test to identify hormonal manifestations of hypothalamic-pituitary-gonadal axis (HPG axis) activation. Based on the GnRH test, 28 young girls were identified with CPP, whereas the other 37 girls were identified with non-central precocious puberty (NCPP). Cortical parameters were calculated and compared between the two groups after adjusting for age, weight, and height. Brain regions showing group differences were extracted and correlated with serum hormone levels and psychological parameters. The CPP girls showed thinner cortices primarily in the right rostral middle frontal cortex. This morphological difference was positively correlated with stimulated estradiol (E2) levels. Further, higher E2 levels were significantly associated with higher hyperactivity scores. Premature HPG axis activation in CPP girls at an early stage appears to exert remodeling effects on brain anatomy, primarily in the prefrontal cortex, which may affect psychological development following the emergence of robust changes in sex hormones.
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Affiliation(s)
- Di Yang
- Department of Radiology, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China.,Department of Radiology, Zhejiang Hospital, Hangzhou, China
| | - Wenjing Zhang
- Department of Radiology, the Center for Medical Imaging, West China Hospital of Sichuan University, Chengdu, China
| | - Yaxin Zhu
- Department of Radiology, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Peining Liu
- Department of Child Health Care, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Bo Tao
- Department of Radiology, the Center for Medical Imaging, West China Hospital of Sichuan University, Chengdu, China
| | - Yuchuan Fu
- Department of Radiology, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Yu Chen
- Department of Radiology, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Lu Zhou
- Department of Radiology, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Lu Liu
- Department of Radiology, the Center for Medical Imaging, West China Hospital of Sichuan University, Chengdu, China
| | - Xin Gao
- Department of Radiology, the Center for Medical Imaging, West China Hospital of Sichuan University, Chengdu, China.,Department of Radiology, People's Hospital of Deyang City, Deyang, China
| | - Xiaozheng Liu
- Department of Radiology, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Leah H Rubin
- Department of Psychiatry, University of Illinois at Chicago, Chicago, IL, United States
| | - John A Sweeney
- Department of Radiology, the Center for Medical Imaging, West China Hospital of Sichuan University, Chengdu, China.,Department of Psychiatry and Behavioral Neuroscience, University of Cincinnati, Cincinnati, OH, United States
| | - Zhihan Yan
- Department of Radiology, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
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221
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Sfärlea A, Dehning S, Keller LK, Schulte-Körne G. Alexithymia predicts maladaptive but not adaptive emotion regulation strategies in adolescent girls with anorexia nervosa or depression. J Eat Disord 2019; 7:41. [PMID: 31798880 PMCID: PMC6883686 DOI: 10.1186/s40337-019-0271-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Accepted: 10/30/2019] [Indexed: 01/03/2023] Open
Abstract
BACKGROUND Among adolescent girls, anorexia nervosa (AN) and major depression (MD) are common and often comorbid mental health problems. Both disorders are characterised by difficulties in recognising and verbalising (alexithymia) as well as regulating one's emotions, but research in adolescent patients is scarce and little is known about the relation between alexithymia and difficulties in emotion regulation. The aims of this study were to investigate alexithymia and emotion regulation skills in adolescents with AN, adolescents with MD, and healthy adolescents, and to determine whether alexithymia functions as a predictor for emotion regulation skills. METHODS Emotion regulation strategies, alexithymia, and depressive symptoms were assessed by questionnaire measures in 12-18 year old girls with AN (n = 26), girls with MD (n = 25), and healthy girls (n = 35). Groups were compared with respect to the these variables and multiple regression analyses were calculated separately for adaptive and maladaptive emotion regulation strategies in order to examine if alexithymia predicted emotion regulation over and above age and depressive symptoms. RESULTS Girls with AN or MD both reported using adaptive emotion regulation strategies less frequently and maladaptive emotion regulation skills more frequently as well as higher levels of alexithymia compared to healthy girls. Alexithymia positively predicted maladaptive emotion regulation strategies, while depressive symptoms negatively predicted adaptive emotion regulation strategies. CONCLUSIONS The results suggest that different mechanisms may underlie the lack of adaptive and the surplus of maladaptive emotion regulation strategies in adolescent psychiatric patients.
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Affiliation(s)
- Anca Sfärlea
- 1Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, University Hospital, LMU Munich, Pettenkoferstr. 8a, 80336 Munich, Germany
| | - Sandra Dehning
- 1Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, University Hospital, LMU Munich, Pettenkoferstr. 8a, 80336 Munich, Germany
| | - Lena Katharina Keller
- 1Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, University Hospital, LMU Munich, Pettenkoferstr. 8a, 80336 Munich, Germany.,2Faculty of Medicine, Institute of Medical Psychology, LMU, Munich, Germany
| | - Gerd Schulte-Körne
- 1Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, University Hospital, LMU Munich, Pettenkoferstr. 8a, 80336 Munich, Germany
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222
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Gender differences in brain processes during inhibition of manual movements programs. Ann Neurosci 2019; 26:4-9. [PMID: 31975766 PMCID: PMC6894627 DOI: 10.5214/ans.0972.7531.260103] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Revised: 11/20/2018] [Accepted: 11/22/2018] [Indexed: 11/17/2022] Open
Abstract
Background Motor response suppression can be regarded as an important aspect of the
executive control, as a way of changing the behavioral pattern depending on
the internal state or external factors. Purpose The aim of our study was to examine whether there were differences in the
ability of cortical inhibition of triggered motor program (in the context of
the Stop-Signal task) between females and males. Methods We examined differences in the patterns of event-related EEG
synchronization/desynchronization (ERS/ERD) in young volunteers under the
conditions of complete inhibition of the triggered motor program of a manual
movement. Thirty-six male and thirty-eight female (ages of 19 to 21) took
part in the tests. The ERS and ERD indices were estimated within the EEG
frequency range 8–35 Hz in frontal, central and parietal leads. Results In both gender groups, as a global pattern, the prevalence of connected
phenomena with the EEG synchronization event in the range of α-activity of
the EEG, apparently associated with inhibition of the running motor program
was noted. Conclusion Cortical electrical activity acquired certain specific features of the
frequency-spatial organization, which could indicate the course of somewhat
different brain processes of men and women.
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223
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Peters AT, Burkhouse KL, Kujawa A, Afshar K, Fitzgerald KD, Monk CS, Hajcak G, Phan KL. Impact of pubertal timing and depression on error-related brain activity in anxious youth. Dev Psychobiol 2019; 61:69-80. [PMID: 30043447 PMCID: PMC6318038 DOI: 10.1002/dev.21763] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Revised: 06/18/2018] [Accepted: 06/18/2018] [Indexed: 01/07/2023]
Abstract
Anxiety disorders are associated with enhanced error-related negativity (ERN) across development but it remains unclear whether alterations in brain electrophysiology are linked to the timing of puberty. Pubertal timing and alterations of prefrontal and limbic development are implicated in risk for depression, but the interplay of these factors on the ERN-anxiety association has not been assessed. We examined the unique and interactive effects of pubertal timing and depression on the ERN in a sample of youth 10-19 years old with anxiety disorders (n = 30) or no history of psychopathology (n = 30). Earlier pubertal maturation was associated with an enhanced ERN. Among early, but not late maturing youth, higher depressive symptoms were associated with a reduced ERN. The magnitude of neural reactivity to errors is sensitive to anxiety, depression, and development. Early physical maturation and anxiety may heighten neural sensitivity to errors yet predict opposing effects in the context of depression.
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Affiliation(s)
- Amy T. Peters
- University of Illinois at Chicago, Department of Psychiatry, 1747 W Roosevelt Road, Chicago, IL, 60608
| | - Katie L. Burkhouse
- University of Illinois at Chicago, Department of Psychiatry, 1747 W Roosevelt Road, Chicago, IL, 60608
| | - Autumn Kujawa
- Vanderbilt University, Department of Psychology and Human Development, 230 Appleton Place, Nashville, TN 37203
| | - Kaveh Afshar
- University of Illinois at Chicago, Department of Psychiatry, 1747 W Roosevelt Road, Chicago, IL, 60608
| | - Kate D. Fitzgerald
- University of Michigan, Department of Psychiatry, 1500 E Medical Center Drive, Ann Arbor, MI 48109
| | - Christopher S. Monk
- University of Michigan, Department of Psychiatry, 1500 E Medical Center Drive, Ann Arbor, MI 48109
- University of Michigan, Department of Psychology, 530 Church Street, Ann Arbor, MI 48109
| | - Greg Hajcak
- Florida State University, Department of Psychology and Biomedical Sciences, 1107 W. Call Street, Tallahassee, FL 32306
| | - K. Luan Phan
- University of Illinois at Chicago, Department of Psychiatry, 1747 W Roosevelt Road, Chicago, IL, 60608
- University of Illinois-Chicago, Department of Anatomy and Cell Biology & Graduate Program in Neuroscience, 840 S Wood St, Chicago, IL 60612
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Kaczkurkin AN, Raznahan A, Satterthwaite TD. Sex differences in the developing brain: insights from multimodal neuroimaging. Neuropsychopharmacology 2019; 44:71-85. [PMID: 29930385 PMCID: PMC6235840 DOI: 10.1038/s41386-018-0111-z] [Citation(s) in RCA: 196] [Impact Index Per Article: 39.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Revised: 05/21/2018] [Accepted: 05/23/2018] [Indexed: 12/20/2022]
Abstract
Youth (including both childhood and adolescence) is a period when the brain undergoes dramatic remodeling and is also a time when neuropsychiatric conditions often emerge. Many of these illnesses have substantial sex differences in prevalence, suggesting that sex differences in brain development may underlie differential risk for psychiatric symptoms between males and females. Substantial evidence documents sex differences in brain structure and function in adults, and accumulating data suggests that these sex differences may be present or emerge during development. Here we review the evidence for sex differences in brain structure, white matter organization, and perfusion during development. We then use these normative differences as a framework to understand sex differences in brain development associated with psychopathology. In particular, we focus on sex differences in the brain as they relate to anxiety, depression, psychosis, and attention-deficit/hyperactivity symptoms. Finally, we highlight existing limitations, gaps in knowledge, and fertile avenues for future research.
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Affiliation(s)
- Antonia N Kaczkurkin
- Department of Psychiatry, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Armin Raznahan
- Developmental Neurogenomics Unit, National Institute of Mental Health, Bethesda, MD, 20814, USA
| | - Theodore D Satterthwaite
- Department of Psychiatry, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA.
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225
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Foley JE, Ram N, Susman EJ, Weinraub M. Changes to sleep-wake behaviors are associated with trajectories of pubertal timing and tempo of secondary sex characteristics. J Adolesc 2018; 68:171-186. [DOI: 10.1016/j.adolescence.2018.07.017] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2018] [Revised: 07/26/2018] [Accepted: 07/30/2018] [Indexed: 11/24/2022]
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226
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Ho RA, Hall GB, Noseworthy MD, DeMatteo C. An Emotional Go/No-Go fMRI study in adolescents with depressive symptoms following concussion. Int J Psychophysiol 2018; 132:62-73. [DOI: 10.1016/j.ijpsycho.2017.09.021] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Revised: 09/18/2017] [Accepted: 09/25/2017] [Indexed: 01/04/2023]
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227
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Muñoz Centifanti LC, Boydston L, Wee C, Demetriou V, MacLellan S, Anastassiou-Hadjicharalambous X. Pubertal timing and callous-unemotional traits in girls: Associations across two samples from the UK and Cyprus. J Adolesc 2018; 69:52-61. [PMID: 30248585 DOI: 10.1016/j.adolescence.2018.08.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 08/01/2018] [Accepted: 08/31/2018] [Indexed: 12/15/2022]
Abstract
INTRODUCTION Girls remain an understudied group when examining delinquency. Callous-unemotional traits are chief among personality traits that relate to delinquency. Some suggest, however, that girls who evince callous-unemotional traits delay their delinquent behavior until adolescence. This transitional period encompasses physical factors that relate to engagement in risky decision making, but we don't know how these factors relate to callous-unemotional traits. Early pubertal timing shows positive associations with delinquency; we tested if this was also the case for callous-unemotional traits. METHODS We tested associations among pubertal timing (i.e., maturity and menarche age), delinquency, and callous-unemotional traits within girls (ages 11-18 years) sampled from two European countries (UK and Cyprus). We also tested the interaction between callous-unemotional traits and pubertal timing in statistically predicting delinquency to test if associations between early puberty and delinquency were moderated by callous-unemotional traits. RESULTS Greater callous-unemotional traits were surprisingly negatively related to early pubertal timing. Those girls in the delayed menarche group had the highest level of callous-unemotional traits, higher than the typical and early menarche groups. Only callous-unemotional traits statistically predicted variance in delinquency and no moderation was evident. CONCLUSIONS The implications are that callous-unemotional traits and the transition to puberty may be particularly important for girls' adjustment in adolescence, particularly if menarche is delayed allowing girls to avoid punishment by capitalizing on their immaturity.
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228
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Patterson MW, Mann FD, Grotzinger AD, Tackett JL, Tucker-Drob EM, Harden KP. Genetic and environmental influences on internalizing psychopathology across age and pubertal development. Dev Psychol 2018; 54:1928-1939. [PMID: 30234342 DOI: 10.1037/dev0000578] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Symptoms of anxiety and depression are commonly comorbid and partially share a genetic etiology. Mean levels of anxiety and depression increase over the transition to adolescence, particularly in girls, suggesting a possible role of pubertal development in the activation of underlying genetic risks. The current study examined how genetic and environmental influences on anxiety and depression differed by chronological age and pubertal status. We analyzed composite scores from child self-reports and parent informant-reports of internalizing symptomology in a racially and socioeconomically diverse sample of 1,913 individual twins from 1,006 pairs (ages 8-20 years) from the Texas Twin Project. Biometric models tested age and pubertal status as moderators of genetic and environmental influences shared between and specific to anxiety and depression to determine whether etiology of internalizing symptomology differs across development as a function of age or puberty. Genetic influences did not increase as a function of age or puberty, but instead shared environmental effects decreased with age. In an exploratory model that considered the moderators simultaneously, developmental differences in etiology were reflected in genetic and environmental effects unique to depression. Results suggest that genetic variance in internalizing problems is relatively constant during adolescence, with environmental influences more varied across development. (PsycINFO Database Record
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Affiliation(s)
| | - Frank D Mann
- Department of Psychology, University of Minnesota
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Segovia-Siapco G, Pribis P, Oda K, Sabaté J. Soy isoflavone consumption and age at pubarche in adolescent males. Eur J Nutr 2018; 57:2287-2294. [PMID: 28712053 DOI: 10.1007/s00394-017-1504-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Accepted: 07/07/2017] [Indexed: 10/19/2022]
Abstract
PURPOSE Isoflavones have estrogenic properties that may adversely affect pubertal development of boys. We examined if soy isoflavone consumption is associated with age at pubarche (first onset of pubic hair) in a male population with a wide range of soy intake. METHODS Boys aged 12-18 years (n = 248) who attended schools around Adventist universities in Southern California and Michigan self-reported their age at pubarche. Intake of soy isoflavones was assessed using a validated Web-based food frequency questionnaire; consumption levels were designated as low, moderate, and high. Descriptives, time-to-event analysis, and Cox proportional hazards regression that controlled for confounders were performed. RESULTS Energy-adjusted mean intakes were 0.8-54.9 mg/d for total isoflavones, 0.4-22.1 mg/d for daidzein, and 0.4-28.0 mg/d for genistein. Moderate and high total soy isoflavone intake were significantly associated with earlier adjusted median age at pubarche: 12.58 years [RR (95% CI): 1.58 (1.06, 2.36)] for moderate and 12.50 years [RR (95% CI): 1.63 (1.03, 2.60)] for high vs. 13.00 years for low consumers. Similarly, daidzein and genistein consumption was also significantly associated with age at pubarche. No significant associations were found for facial hair for any of the isoflavones. CONCLUSIONS Age at pubarche in this male population widely exposed to soy is within the reported range for boys' pubarcheal age; moderate/high consumers tend to have it earlier compared to low consumers. Further studies are needed to ascertain that substantial exposure to soy isoflavones does not adversely affect pubertal development of boys.
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Affiliation(s)
- Gina Segovia-Siapco
- Center for Nutrition, Healthy Lifestyle, & Disease Prevention, School of Public Health, Loma Linda University, 24951 North Circle Drive, Loma Linda, CA 92350, USA.
| | - Peter Pribis
- Department of Individual, Family & Community Education, College of Education, University of New Mexico, Hokona Hall 157 MSC05 3040, Albuquerque, NM 87131-0001, USA
| | - Keiji Oda
- Center for Nutrition, Healthy Lifestyle, & Disease Prevention, School of Public Health, Loma Linda University, 24951 North Circle Drive, Loma Linda, CA 92350, USA
| | - Joan Sabaté
- Center for Nutrition, Healthy Lifestyle, & Disease Prevention, School of Public Health, Loma Linda University, 24951 North Circle Drive, Loma Linda, CA 92350, USA
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Holman PJ, Ellis L, Morgan E, Weinberg J. Prenatal alcohol exposure disrupts male adolescent social behavior and oxytocin receptor binding in rodents. Horm Behav 2018; 105:115-127. [PMID: 30110605 PMCID: PMC6246826 DOI: 10.1016/j.yhbeh.2018.08.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2018] [Revised: 07/21/2018] [Accepted: 08/08/2018] [Indexed: 12/22/2022]
Abstract
Social behavior deficits resulting from prenatal alcohol exposure (PAE) emerge early in life and become more pronounced across development. Maturational changes associated with adolescence, including pubertal onset, can have significant consequences for social behavior development, making adolescence a unique period of increased vulnerability to social behavior dysfunction. Unfortunately, little is known about the underlying neurobiology supporting PAE-related social behavior impairments, particularly in the context of adolescence, when the transition to a more complex social environment may exacerbate existing deficits in social behavior function. Here we perform a comprehensive evaluation of social behavior development in PAE animals during two different periods in adolescence using three separate but related tests of social behavior in increasingly complex social contexts: the social interaction test, the social recognition memory test (i.e. habituation-dishabituation test), and the social discrimination test. Additionally, we investigated the underlying neurobiology of the oxytocin (OT) and vasopressin (AVP) systems following PAE, given their well-documented role in mediating social behavior. Our results demonstrate that compared to controls, early adolescent PAE animals showed impairments on the social recognition memory test and increased OT receptor binding in limbic networks, while late adolescent PAE animals exhibited impairments on the social discrimination test and increased OTR binding in forebrain reward systems. Taken together, these data indicate that PAE impairs adolescent social behavior - especially with increasing complexity of the social context - and that impairments are associated with altered development of the OT but not the AVP system.
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Affiliation(s)
- Parker J Holman
- Department of Cellular & Physiological Sciences, University of British Columbia, Vancouver, Canada.
| | - Linda Ellis
- Department of Cellular & Physiological Sciences, University of British Columbia, Vancouver, Canada
| | - Erin Morgan
- Department of Cellular & Physiological Sciences, University of British Columbia, Vancouver, Canada
| | - Joanne Weinberg
- Department of Cellular & Physiological Sciences, University of British Columbia, Vancouver, Canada
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231
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Social support rescues acute stress-induced cognitive impairments by modulating ERK1/2 phosphorylation in adolescent mice. Sci Rep 2018; 8:12003. [PMID: 30104581 PMCID: PMC6089908 DOI: 10.1038/s41598-018-30524-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Accepted: 07/24/2018] [Indexed: 12/05/2022] Open
Abstract
Social support can relieve stress-induced behavioural outcomes, although its underlying molecular mechanisms are not fully understood. Here, we evaluated whether social interactions can prevent the restraint stress (RS)-induced cognitive impairments in male adolescent mice by utilizing molecular, cellular, and behavioural approaches. Acute RS in adolescent ICR mice impaired the working memory in the Y-maze test and memory consolidation and retrieval in the novel-object-recognition test (NORT). In addition, RS increased the extracellular signal-regulated kinases 1/2 phosphorylation (p-ERK1/2) in the prefrontal cortex (PFC) and corticosterone levels in the plasma. Interestingly, these outcomes were normalized by the presence of a conspecific animal (social support) during RS. RS also significantly upregulated the expression levels of known stress-relevant genes such as Egr1, Crh, and Crhr1, which were normalized by social support. Systemic injection of SL327 (an inhibitor of MEK1/2 that also blocks its downstream signal ERK1/2) prior to RS rescued the working memory impairments and the increased p-ERK1/2 while normalizing the expression of Egr1. Our results suggest that social support can alleviate the RS-induced cognitive impairments partly by modulating ERK1/2 phosphorylation and gene transcription in the PFC, and provide novel insights into the molecular mechanisms of the stress-buffering effects of social support.
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232
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Pinares-Garcia P, Stratikopoulos M, Zagato A, Loke H, Lee J. Sex: A Significant Risk Factor for Neurodevelopmental and Neurodegenerative Disorders. Brain Sci 2018; 8:E154. [PMID: 30104506 PMCID: PMC6120011 DOI: 10.3390/brainsci8080154] [Citation(s) in RCA: 102] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Revised: 08/08/2018] [Accepted: 08/10/2018] [Indexed: 12/11/2022] Open
Abstract
Males and females sometimes significantly differ in their propensity to develop neurological disorders. Females suffer more from mood disorders such as depression and anxiety, whereas males are more susceptible to deficits in the dopamine system including Parkinson's disease (PD), attention-deficit hyperactivity disorder (ADHD) and autism. Despite this, biological sex is rarely considered when making treatment decisions in neurological disorders. A better understanding of the molecular mechanism(s) underlying sex differences in the healthy and diseased brain will help to devise diagnostic and therapeutic strategies optimal for each sex. Thus, the aim of this review is to discuss the available evidence on sex differences in neuropsychiatric and neurodegenerative disorders regarding prevalence, progression, symptoms and response to therapy. We also discuss the sex-related factors such as gonadal sex hormones and sex chromosome genes and how these might help to explain some of the clinically observed sex differences in these disorders. In particular, we highlight the emerging role of the Y-chromosome gene, SRY, in the male brain and its potential role as a male-specific risk factor for disorders such as PD, autism, and ADHD in many individuals.
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Affiliation(s)
- Paulo Pinares-Garcia
- Brain and Gender laboratory, Centre for Endocrinology and Metabolism, Hudson Institute of Medical Research, Clayton, Victoria 3168, Australia.
- Department of Anatomy and Developmental Biology, Monash University, Clayton, Victoria 3168, Australia.
| | - Marielle Stratikopoulos
- Brain and Gender laboratory, Centre for Endocrinology and Metabolism, Hudson Institute of Medical Research, Clayton, Victoria 3168, Australia.
- Department of Anatomy and Developmental Biology, Monash University, Clayton, Victoria 3168, Australia.
| | - Alice Zagato
- Brain and Gender laboratory, Centre for Endocrinology and Metabolism, Hudson Institute of Medical Research, Clayton, Victoria 3168, Australia.
- School of Life and Environmental Sciences, Deakin University, Burwood, Victoria 3125, Australia.
| | - Hannah Loke
- Brain and Gender laboratory, Centre for Endocrinology and Metabolism, Hudson Institute of Medical Research, Clayton, Victoria 3168, Australia.
| | - Joohyung Lee
- Brain and Gender laboratory, Centre for Endocrinology and Metabolism, Hudson Institute of Medical Research, Clayton, Victoria 3168, Australia.
- Department of Anatomy and Developmental Biology, Monash University, Clayton, Victoria 3168, Australia.
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233
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Onaolapo OJ, Onaolapo AY. Melatonin, adolescence, and the brain: An insight into the period-specific influences of a multifunctional signaling molecule. Birth Defects Res 2018; 109:1659-1671. [PMID: 29251845 DOI: 10.1002/bdr2.1171] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Accepted: 10/31/2017] [Indexed: 12/21/2022]
Abstract
Melatonin is a neurohormone that is involved in the modulation of a wide range of physiological processes, including maintenance of the circadian rhythm, mediation of photoperiodic information, regulation of the sleep-wake cycle, synchronization of cell physiology, antioxidant defense, and immune-modulation. Although there are reports of increasing use of melatonin in the management of a number of health conditions, evidence exists that is suggestive of deleterious effects of melatonin administration on brain and reproductive development in the prepubertal and pubertal periods that are within the teenage years. In this review, we examine the influences of endogenous and exogenous melatonin on the adolescent brain, with specific reference to its involvement in the evolution of brain functions, brain structure, sleep regulation, and modulation of behaviors in health or disease.
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Affiliation(s)
- O J Onaolapo
- Behavioral Neuroscience/Neuropharmacology Unit, Department of Pharmacology, Ladoke Akintola University of Technology, Osogbo, Osun State, Nigeria
| | - A Y Onaolapo
- Behavioral Neuroscience/Neurobiology Unit, Department of Anatomy, Ladoke Akintola University of Technology, Ogbomoso, Oyo State, Nigeria
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234
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Domonkos E, Hodosy J, Ostatníková D, Celec P. On the Role of Testosterone in Anxiety-Like Behavior Across Life in Experimental Rodents. Front Endocrinol (Lausanne) 2018; 9:441. [PMID: 30127767 PMCID: PMC6088149 DOI: 10.3389/fendo.2018.00441] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Accepted: 07/17/2018] [Indexed: 11/13/2022] Open
Abstract
Testosterone affects brain functions and might explain some of the observed behavioral sex differences. Animal models may help in elucidating the possible involvement of sex hormones in these sex differences. The effects of testosterone have been intensively investigated, especially in anxiety models. Numerous experiments have brought inconsistent results with either anxiolytic or anxiogenic effects. Besides methodological variations, contradictory findings might be explained by the divergent metabolism of testosterone and its recognition by neurons during prenatal and postnatal development. Gonadectomy and subsequent supplementation have been used to study the role of sex hormones. However, the variable duration of hypogonadism might affect the outcomes and the effect of long-term androgen deficiency is understudied. Testosterone can be metabolized to dihydrotestosterone strengthening the androgen signaling, but also to estradiol converting the androgen to estrogen activity. Moreover, some metabolites of testosterone can modulate γ-aminobutyric acid and serotonergic neurotransmission. Here we review the currently available experimental data in experimental rodents on the effects of testosterone on anxiety during development. Based on the experimental results, females are generally less anxious than males from puberty to middle-age. The anxiety-like behavior of females and males is likely influenced by early organizational effects, but might be modified by activational effects of testosterone and its metabolites. The effects of sex hormones leading to anxiogenesis or anxiolysis depend on factors affecting hormonal status including age. The biological and several technical issues make the study of effects of testosterone on anxiety very complex and should be taken into account when interpreting experimental results.
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Affiliation(s)
- Emese Domonkos
- Faculty of Medicine, Institute of Molecular Biomedicine, Comenius University, Bratislava, Slovakia
| | - Július Hodosy
- Faculty of Medicine, Institute of Molecular Biomedicine, Comenius University, Bratislava, Slovakia
- Faculty of Medicine, Institute of Physiology, Comenius University, Bratislava, Slovakia
| | - Daniela Ostatníková
- Faculty of Medicine, Institute of Physiology, Comenius University, Bratislava, Slovakia
| | - Peter Celec
- Faculty of Medicine, Institute of Molecular Biomedicine, Comenius University, Bratislava, Slovakia
- Faculty of Medicine, Institute of Pathophysiology, Comenius University, Bratislava, Slovakia
- Department of Molecular Biology, Faculty of Natural Sciences, Comenius University, Bratislava, Slovakia
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235
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Simone JJ, Baumbach JL, McCormick CM. Sex-specific effects of CB1 receptor antagonism and stress in adolescence on anxiety, corticosterone concentrations, and contextual fear in adulthood in rats. Int J Dev Neurosci 2018; 69:119-131. [PMID: 30063953 DOI: 10.1016/j.ijdevneu.2018.07.011] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Revised: 07/23/2018] [Accepted: 07/26/2018] [Indexed: 02/07/2023] Open
Abstract
There is a paucity of research regarding the role of endogenous cannabinoid signalling in adolescence on brain and behaviour development. We previously demonstrated effects of repeated CB1 receptor antagonism in adolescence on socioemotional behaviours and neural protein expression 24-48 h after the last drug administration in female rats, with no effect in males. Here we investigate whether greater effects would be manifested after a lengthier delay. In Experiment 1, male and female rats were administered either 1 mg / kg of the CB1 receptor-selective antagonist AM251, vehicle (VEH), or did not receive injections (NoINJ) daily on postnatal days (PND) 30-44 either alone (no adolescent confinement stress; noACS), or in tandem with 1 h ACS. On PND 70, adolescent AM251 exposure reduced anxiety in an elevated plus maze in males, irrespective of ACS, with no effects in females. On PND 73, there were no group differences in either sex in plasma corticosterone concentrations before or after 30 min of restraint stress, although injection stress resulted in higher baseline concentrations in males. Brains were collected on PND 74, with negligible effects of either AM251 or ACS on protein markers of synaptic plasticity and of the endocannabinoid system in the hippocampus and medial prefrontal cortex. In Experiment 2, rats from both sexes were treated with vehicle or AM251 on PND 30-44 and were tested for contextual fear conditioning and extinction in adulthood. AM251 females had greater fear recall than VEH females 24 h after conditioning, with no group differences in within- or between-session fear extinction. There were no group differences in long-term extinction memory, although AM251 females froze more during a reconditioning trial compared with VEH females. There were no group differences on any of the fear conditioning measures in males. Together, these findings indicate a modest, sex-specific role of CB1 receptor signalling in adolescence on anxiety-like behaviour in males and conditioned fear behaviour in females.
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Affiliation(s)
- Jonathan J Simone
- Department of Biological Sciences, Brock University, 1812 Sir Isaac Brock Way, St. Catharines, Ontario, L2S 3A1, Canada.
| | - Jennet L Baumbach
- Department of Psychology, Brock University, 1812 Sir Isaac Brock Way, St. Catharines, Ontario, L2S 3A1, Canada.
| | - Cheryl M McCormick
- Department of Biological Sciences, Brock University, 1812 Sir Isaac Brock Way, St. Catharines, Ontario, L2S 3A1, Canada; Department of Psychology, Brock University, 1812 Sir Isaac Brock Way, St. Catharines, Ontario, L2S 3A1, Canada; Center for Neuroscience, Brock University, 1812 Sir Isaac Brock Way, St. Catharines, Ontario, L2S 3A1, Canada.
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236
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Girls' pubertal development is associated with white matter microstructure in late adolescence. Neuroimage 2018; 181:659-669. [PMID: 30056197 DOI: 10.1016/j.neuroimage.2018.07.050] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Revised: 07/18/2018] [Accepted: 07/20/2018] [Indexed: 01/04/2023] Open
Abstract
Patterns of pubertal maturation have been linked to vulnerability for emotion dysregulation disorders in girls, as well as white matter (WM) development, suggestive of a potential mechanism between pubertal maturation and emotional health. Because pubertal processes begin at varying ages (i.e., status, timing) and proceed at varying rates (i.e., tempo), identifying individual differences in the pubertal course associated with subsequent WM microstructure development may reveal clues about neurobiological mechanisms of girls' emotional well-being. In a prospective cohort study of 107 girls, we examined associations between pubertal status at age 9, pubertal timing and tempo from ages 9-15, and WM microstructure at age 19. Tract-based spatial statistics revealed that girls with more advanced pubertal status at age 9, specific to gonadal-related physical changes, had higher fractional anisotropy, and lower mean diffusivity (MD) and radial diffusivity in tracts relevant to cognitive control and emotion regulation (e.g., the superior longitudinal fasciculus, external capsule, and uncinate fasciculus). Additionally, girls with earlier pubertal timing showed lower MD in the left anterior cingulum bundle. Tempo was unrelated to WM measures. These findings implicate specific aspects of pubertal maturation in subsequent neural signatures, suggesting possible neuroendocrine mechanisms relevant to emotional development. Future work incorporating longitudinal neuroimaging in parallel with pubertal measures may contribute to the understanding of individual variation in pubertal course and WM development.
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237
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van Rijn S. Salivary testosterone in relation to social cognition and social anxiety in children and adolescents with 47,XXY (Klinefelter syndrome). PLoS One 2018; 13:e0200882. [PMID: 30036387 PMCID: PMC6056033 DOI: 10.1371/journal.pone.0200882] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Accepted: 07/05/2018] [Indexed: 11/30/2022] Open
Abstract
Background Approximately 1 in 650 boys are born with an extra X chromosome. Boys and men with 47,XXY (Klinefelter syndrome) are at risk for neurodevelopmental disorders and specific cognitive impairments. This study was focused on social anxiety and social cognition. The aim was to assess if these aspects of the phenotype are related to testosterone deficiency, which is typically seen in 47,XXY from puberty onwards. Methods In the study 20 boys with 47,XXY and 25 non-clinical controls between 8 and 19 years participated. None had ever used testosterone supplements. Cognitive tests measuring the labeling of facial expressions and perspective taking (Theory of Mind) were administered. Self-report questionnaires were used to assess social anxiety. Testosterone was measured in saliva. Results Within the 47,XXY group lower levels of salivary testosterone were significantly associated with higher levels of social anxiety. The correlation was strong, andindependent of age and pubertal development. However, salivary levels of testosterone were uncorrelated to social cognitive skills. Discussion These findings point out that lower testosterone levels might contribute to high social anxiety in 47,XXY, suggesting that anxiety should be monitored in pubertal boys with XXY presenting with testosterone deficiency. This should be done in addition to exploring cognitive behavioral therapy or psychopharmacologic treatments targeting anxiety, which are more evidence based. In contrast, testosterone levels were not associated with social cognitive functioning, suggesting that other mechanisms are driving vulnerabilities in this domain.
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Affiliation(s)
- Sophie van Rijn
- Leiden University, Clinical Child and Adolescent Studies, Leiden, The Netherlands
- Leiden Institute for Brain and Cognition, Leiden, The Netherlands
- * E-mail:
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238
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Bell MR. Comparing Postnatal Development of Gonadal Hormones and Associated Social Behaviors in Rats, Mice, and Humans. Endocrinology 2018; 159:2596-2613. [PMID: 29767714 PMCID: PMC6692888 DOI: 10.1210/en.2018-00220] [Citation(s) in RCA: 132] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Accepted: 05/08/2018] [Indexed: 12/20/2022]
Abstract
Postnatal development includes dramatic changes in gonadal hormones and the many social behaviors they help regulate, both in rodents and humans. Parental care-seeking is the most salient social interaction in neonates and infants, play and prosocial behaviors are commonly studied in juveniles, and the development of aggression and sexual behavior begins in peripubertal stages but continues through late adolescence into adulthood. Although parental behaviors are shown after reproductive success in adulthood, alloparenting behaviors are actually high in juveniles as well. These behaviors are sensitive to both early-life organizational effects of gonadal hormones and later-life activational regulation. However, changes in circulating gonadal hormones and the display of the previous behaviors over development differ between rats, mice, and humans. These endpoints are of interest to endocrinologist, toxicologists, and neuroscientists because of their relevance to mental health disorders and their vulnerability to effects of endocrine-disrupting chemical exposure. As such, the goal of this mini-review is to succinctly describe and relate the postnatal development of gonadal hormones and social behaviors to each other, over time, and across animal models. Ideally, this will help identify appropriate animal models and age ranges for continued study of both normative development and in contexts of environmental disruption.
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Affiliation(s)
- Margaret R Bell
- Department of Biological Sciences, DePaul University, Chicago, Illinois
- Department of Health Sciences, DePaul University, Chicago, Illinois
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239
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Klump KL, Fowler N, Mayhall L, Sisk CL, Culbert KM, Burt SA. Estrogen moderates genetic influences on binge eating during puberty: Disruption of normative processes? JOURNAL OF ABNORMAL PSYCHOLOGY 2018; 127:458-470. [PMID: 29927265 DOI: 10.1037/abn0000352] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Puberty is a critical period for changes in genetic effects for binge eating in girls. Previous twin studies show increases in genetic influences on binge eating from prepuberty (∼0%) to midpuberty and beyond (∼50%). However, little is known about the factors that drive these shifts in genetic effects. A small pilot study showed that pubertal activation of estrogen may contribute to increases in genetic influences, possibly via hormonally induced changes in gene expression. However, large-scale studies investigating hormone effects on genetic risk are lacking. Thus, the purpose of the present study was to examine the effects of estrogen on genetic influences for binge eating in 964 female twins (ages 8-16 years) from the Michigan State University Twin Registry. Binge eating was assessed with the Minnesota Eating Behaviors Survey, whereas afternoon saliva samples were assayed for estradiol levels using standard enzyme immunoassays. Twin moderation models showed substantial differences in genetic influences on binge eating across estradiol levels. Stronger genetic effects were observed at lower (rather than higher) estradiol levels, even when controlling for the effects of age, body mass index, the physical changes of puberty, and the onset of menses. Overall, findings suggest that comparatively lower levels of estradiol during this critical period may disrupt normative developmental processes and enhance genetic influences on binge eating. (PsycINFO Database Record
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240
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Lewis G, Ioannidis K, van Harmelen AL, Neufeld S, Stochl J, Lewis G, Jones PB, Goodyer I. The association between pubertal status and depressive symptoms and diagnoses in adolescent females: A population-based cohort study. PLoS One 2018; 13:e0198804. [PMID: 29912985 PMCID: PMC6005470 DOI: 10.1371/journal.pone.0198804] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Accepted: 05/27/2018] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND There is an association between puberty and depression, but many things remain poorly understood. When assessing puberty in females, most studies combine indicators of breast and pubic hair development which are controlled by different hormonal pathways. The contributions of pubertal timing (age at onset) and pubertal status (stage of development, irrespective of timing) are also poorly understood. We tested the hypothesis that stage of breast development in female adolescents, controlled largely by increased estradiol, would be more strongly associated with depression than pubic hair development which occurs in both males and females, and is controlled by adrenal androgens. We investigated whether this association was independent of pubertal timing. METHODS ROOTS is an ongoing cohort of 1,238 adolescents (54% female) recruited in Cambridgeshire (UK) at age 14.5, and followed-up at ages 16 and 17.5. Depression was assessed using the Mood and Feelings Questionnaire (MFQ) and clinical interview. Breast and pubic hair development were assessed at 14.5, using Tanner rating scales. RESULTS For each increase in Tanner breast stage at 14.5, depressive symptoms increased by 1.4 MFQ points (95% CI 0.6 to 2.3), irrespective of age at onset. Pubic hair status was only associated with depressive symptoms before adjustment for breast status, and was not associated with depression in males. The same pattern was observed longitudinally, and for depression diagnoses. LIMITATIONS We did not directly measure hormone levels, our findings are observational, and the study had a relatively low response rate. CONCLUSIONS Females at more advanced stages of breast development are at increased risk of depression, even if their age at pubertal onset is not early. Alongside social and psychological factors, hormones controlling breast but not pubic hair development may contribute to increased incidence of female depression during puberty.
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Affiliation(s)
- Gemma Lewis
- Division of Psychiatry, University College London, London, United Kingdom
| | | | | | - Sharon Neufeld
- Department of Psychiatry, University of Cambridge, Cambridge, United Kingdom
| | - Jan Stochl
- Department of Psychiatry, University of Cambridge, Cambridge, United Kingdom
| | - Glyn Lewis
- Division of Psychiatry, University College London, London, United Kingdom
| | - Peter B. Jones
- Department of Psychiatry, University of Cambridge, Cambridge, United Kingdom
| | - Ian Goodyer
- Department of Psychiatry, University of Cambridge, Cambridge, United Kingdom
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241
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You C, Vandegrift B, Brodie MS. Ethanol actions on the ventral tegmental area: novel potential targets on reward pathway neurons. Psychopharmacology (Berl) 2018; 235:1711-1726. [PMID: 29549390 PMCID: PMC5949141 DOI: 10.1007/s00213-018-4875-y] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Accepted: 03/06/2018] [Indexed: 12/14/2022]
Abstract
The ventral tegmental area (VTA) evaluates salience of environmental stimuli and provides dopaminergic innervation to many brain areas affected by acute and chronic ethanol exposure. While primarily associated with rewarding and reinforcing stimuli, recent evidence indicates a role for the VTA in aversion as well. Ethanol actions in the VTA may trigger neuroadaptation resulting in reduction of the aversive responses to alcohol and a relative increase in the rewarding responses. In searching for effective pharmacotherapies for the treatment of alcohol abuse and alcoholism, recognition of this imbalance may reveal novel strategies. In addition to conventional receptor/ion channel pharmacotherapies, epigenetic factors that control neuroadaptation to chronic ethanol treatment can be targeted as an avenue for development of therapeutic approaches to restore the balance. Furthermore, when exploring therapies to address reward/aversion imbalance in the action of alcohol in the VTA, sex differences have to be taken into account to ensure effective treatment for both men and women. These principles apply to a VTA-centric approach to therapies, but should hold true when thinking about the overall approach in the development of neuroactive drugs to treat alcohol use disorders. Although the functions of the VTA itself are complex, it is a useful model system to evaluate the reward/aversion imbalance that occurs with ethanol exposure and could be used to provide new leads in the efforts to develop novel drugs to treat alcoholism.
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Affiliation(s)
- Chang You
- Department of Physiology and Biophysics, University of Illinois at Chicago, 835 S. Wolcott Ave, Room E-202, M/C 901, Chicago, IL, 60612, USA
- Center for Alcohol Research in Epigenetics, Department of Psychiatry, University of Illinois at Chicago, Chicago, IL, 60612, USA
| | - Bertha Vandegrift
- Department of Physiology and Biophysics, University of Illinois at Chicago, 835 S. Wolcott Ave, Room E-202, M/C 901, Chicago, IL, 60612, USA
- Center for Alcohol Research in Epigenetics, Department of Psychiatry, University of Illinois at Chicago, Chicago, IL, 60612, USA
| | - Mark S Brodie
- Department of Physiology and Biophysics, University of Illinois at Chicago, 835 S. Wolcott Ave, Room E-202, M/C 901, Chicago, IL, 60612, USA.
- Center for Alcohol Research in Epigenetics, Department of Psychiatry, University of Illinois at Chicago, Chicago, IL, 60612, USA.
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Childhood maltreatment as risk factor for lifetime depression: The role of different types of experiences and sensitive periods. ACTA ACUST UNITED AC 2018. [DOI: 10.1016/j.mhp.2018.03.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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243
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Tsai MC, Strong C, Chen WT, Lee CT, Lin CY. Longitudinal impacts of pubertal timing and weight status on adolescent Internet use: Analysis from a cohort study of Taiwanese youths. PLoS One 2018; 13:e0197860. [PMID: 29795649 PMCID: PMC5967734 DOI: 10.1371/journal.pone.0197860] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Accepted: 05/09/2018] [Indexed: 11/24/2022] Open
Abstract
Aim To investigate the longitudinal impacts of pubertal timing and weight status on Internet use in adolescents. Methods Three waves of data on a longitudinal cohort of 7th grade students (N = 2430) were retrieved from the Taiwan Youth Project. Univariate and multivariate regression models were applied using crude and adjusted odds ratios (OR) with 95% confidence intervals (CI) to examine the concomitant impacts of pubertal timing and weight status on adolescent Internet use. Results The dataset identified 210 (8.7%) students using the Internet for more than 20 hours/week, and 81 (3.3%) were viewing pornographic material online. Early maturing and thin-weight adolescents were at 35% and 46% increased risks of spending long hours on Internet use, respectively. While early puberty was associated with online pornography viewing among males (adjusted OR 1.84, 95% CI 1.04–3.28), early puberty was contrarily a protective factor against online gaming in females (adjusted OR 0.59, 95% CI 0.36–0.96). Conclusion Early puberty was found to be positively related to adolescent Internet use. Appropriate health education and guidance regarding Internet use should be provided to those with different developing needs.
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Affiliation(s)
- Meng-Che Tsai
- Department of Pediatrics, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
- * E-mail: (MCT); (CTL)
| | - Carol Strong
- Department of Public Health, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Wan-Ting Chen
- Department of Counseling and Guidance, College of Education, National University of Tainan, Tainan, Taiwan
| | - Chih-Ting Lee
- Department of Family Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
- * E-mail: (MCT); (CTL)
| | - Chung-Ying Lin
- Department of Rehabilitation Sciences, Faculty of Health and Social Sciences, The Hong Kong Polytechnic University, Kowloon, Hong Kong
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244
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Del Río JP, Alliende MI, Molina N, Serrano FG, Molina S, Vigil P. Steroid Hormones and Their Action in Women's Brains: The Importance of Hormonal Balance. Front Public Health 2018; 6:141. [PMID: 29876339 PMCID: PMC5974145 DOI: 10.3389/fpubh.2018.00141] [Citation(s) in RCA: 86] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2017] [Accepted: 04/27/2018] [Indexed: 12/19/2022] Open
Abstract
Sex hormones significantly impact women's lives. Throughout the different stages of life, from menarche to menopause and all stages in between, women experience dramatic fluctuations in the levels of progesterone and estradiol, among other hormones. These fluctuations affect the body as a whole, including the central nervous system (CNS). In the CNS, sex hormones act via steroid receptors. They also have an effect on different neurotransmitters such as GABA, serotonin, dopamine, and glutamate. Additionally, studies show that sex hormones and their metabolites influence brain areas that regulate mood, behavior, and cognitive abilities. This review emphasizes the benefits a proper hormonal balance during the different stages of life has in the CNS. To achieve this goal, it is essential that hormone levels are evaluated considering a woman's age and ovulatory status, so that a correct diagnosis and treatment can be made. Knowledge of steroid hormone activity in the brain will give women and health providers an important tool for improving their health and well-being.
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Affiliation(s)
| | | | | | | | | | - Pilar Vigil
- Reproductive Health Research InstituteSantiago, Chile
- Vicerrectoría de ComunicacionesPontificia Universidad Católica de Chile, Santiago, Chile
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245
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Fiol-Veny A, De la Torre-Luque A, Balle M, Bornas X. Diminished heart rate complexity in adolescent girls: a sign of vulnerability to anxiety disorders? ANXIETY STRESS AND COPING 2018; 31:375-386. [PMID: 29768021 DOI: 10.1080/10615806.2018.1475004] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
BACKGROUND AND OBJECTIVES Diminished heart rate variability has been found to be associated with high anxiety symptomatology. Since adolescence is the period of onset for many anxiety disorders, this study aimed to determine sex- and anxiety-related differences in heart rate variability and complexity in adolescents. METHODS We created four groups according to sex and anxiety symptomatology: high-anxiety girls (n = 24) and boys (n = 25), and low-anxiety girls (n = 22) and boys (n = 24) and recorded their cardiac function while they performed regular school activities. A series of two-way (sex and anxiety) MANOVAs were performed on time domain variability, frequency domain variability, and non-linear complexity. RESULTS We obtained no multivariate interaction effects between sex and anxiety, but highly anxious participants had lower heart rate variability than the low-anxiety group. Regarding sex, girls showed lower heart rate variability and complexity than boys. CONCLUSIONS The results suggest that adolescent girls have a less flexible cardiac system that could be a marker of the girls' vulnerability to developing anxiety disorders.
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Affiliation(s)
- Aina Fiol-Veny
- a University Research Institute on Health Sciences (IUNICS) , University of the Balearic Islands , Palma , Spain
| | - Alejandro De la Torre-Luque
- a University Research Institute on Health Sciences (IUNICS) , University of the Balearic Islands , Palma , Spain
| | - Maria Balle
- a University Research Institute on Health Sciences (IUNICS) , University of the Balearic Islands , Palma , Spain
| | - Xavier Bornas
- a University Research Institute on Health Sciences (IUNICS) , University of the Balearic Islands , Palma , Spain
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246
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Ma Z, Ma Y, Zhang N. Development of brain-wide connectivity architecture in awake rats. Neuroimage 2018; 176:380-389. [PMID: 29738909 DOI: 10.1016/j.neuroimage.2018.05.009] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Accepted: 05/02/2018] [Indexed: 12/13/2022] Open
Abstract
Childhood and adolescence are both critical developmental periods, evidenced by complex neurophysiological changes the brain undergoes and high occurrence rates of neuropsychiatric disorders during these periods. Despite substantial progress in elucidating the developmental trajectories of individual neural circuits, our knowledge of developmental changes of whole-brain connectivity architecture in animals is sparse. To fill this gap, here we longitudinally acquired rsfMRI data in awake rats during five developmental stages from juvenile to adulthood. We found that the maturation timelines of brain circuits were heterogeneous and system specific. Functional connectivity (FC) tended to decrease in subcortical circuits, but increase in cortical circuits during development. In addition, the developing brain exhibited hemispheric functional specialization, evidenced by reduced inter-hemispheric FC between homotopic regions, and lower similarity of region-to-region FC patterns between the two hemispheres. Finally, we showed that whole-brain network development was characterized by reduced clustering (i.e. local communication) but increased integration (distant communication). Taken together, the present study has systematically characterized the development of brain-wide connectivity architecture from juvenile to adulthood in awake rats. It also serves as a critical reference point for understanding circuit- and network-level changes in animal models of brain development-related disorders. Furthermore, FC data during brain development in awake rodents contain high translational value and can shed light onto comparative neuroanatomy.
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Affiliation(s)
- Zilu Ma
- Department of Biomedical Engineering, The Pennsylvania State University, University Park, PA 16802, USA
| | - Yuncong Ma
- Department of Biomedical Engineering, The Pennsylvania State University, University Park, PA 16802, USA
| | - Nanyin Zhang
- Department of Biomedical Engineering, The Pennsylvania State University, University Park, PA 16802, USA.
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247
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Byne W, Karasic DH, Coleman E, Eyler AE, Kidd JD, Meyer-Bahlburg HF, Pleak RR, Pula J. Gender Dysphoria in Adults: An Overview and Primer for Psychiatrists. Transgend Health 2018; 3:57-70. [PMID: 29756044 PMCID: PMC5944396 DOI: 10.1089/trgh.2017.0053] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Regardless of their area of specialization, adult psychiatrists are likely to encounter gender-variant patients; however, medical school curricula and psychiatric residency training programs devote little attention to their care. This article aims to assist adult psychiatrists who are not gender specialists in the delivery of respectful, clinically competent, and culturally attuned care to gender-variant patients, including those who identify as transgender or transsexual or meet criteria for the diagnosis of Gender Dysphoria (GD) as defined by The Diagnostic and Statistical Manual of Mental Disorders (5th edition). The article will also be helpful for other mental health professionals. The following areas are addressed: evolution of diagnostic nosology, epidemiology, gender development, and mental health assessment, differential diagnosis, treatment, and referral for gender-affirming somatic treatments of adults with GD.
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Affiliation(s)
- William Byne
- Mental Illness Research Education and Clinical Center, James J Peters VA Medical Center, Bronx, New York
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai and Center for Transgender Medicine and Surgery at Mount Sinai, New York, New York
| | - Dan H. Karasic
- Department of Psychiatry, University of California, San Francisco, San Francisco, California
| | - Eli Coleman
- Program in Human Sexuality, Department of Family Medicine and Community Health, University of Minnesota Medical School, Minneapolis, Minnesota
| | - A. Evan Eyler
- Departments of Psychiatry and Family Medicine, University of Vermont College of Medicine, Burlington, Vermont
| | - Jeremy D. Kidd
- Department of Psychiatry, Division on Substance Use Disorders, College of Physicians and Surgeons of Columbia University, New York, New York
| | - Heino F.L. Meyer-Bahlburg
- Division of Gender, Sexuality, and Health, New York State Psychiatric Institute/Department of Psychiatry, College of Physicians and Surgeons of Columbia University, New York, New York
| | - Richard R. Pleak
- Department of Psychiatry, Division of Child and Adolescent Psychiatry, Hofstra North Shore-LIJ School of Medicine, Albert Einstein College of Medicine, Zucker Hillside Hospital, Ambulatory Care Pavilion, Glen Oaks, New York
| | - Jack Pula
- Department of Psychiatry, Division of Gender, Sexuality and Health, College of Physicians and Surgeons of Columbia University, New York, New York
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248
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Gorday JY, Meyer A. Linking puberty and error-monitoring: Relationships between self-reported pubertal stages, pubertal hormones, and the error-related negativity in a large sample of children and adolescents. Dev Psychobiol 2018; 60:483-490. [PMID: 29630723 DOI: 10.1002/dev.21625] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Accepted: 02/09/2018] [Indexed: 12/18/2022]
Abstract
The error-related negativity (ERN) is a negative deflection in the event-related potential occurring when individuals make mistakes. The ERN has been proposed as a biomarker for anxiety and a substantial amount of research suggests the ERN increases across development. Further, the ERN may relate to individual differences and the development of cognitive control. Despite the large quantity of research on this topic, there have been no studies focusing on the relationship between pubertal hormones and the ERN. Previous work suggests developmental increases may begin sooner for girls than for boys, suggesting that puberty may impact the ERN. The current study examined the relationship between pubertal hormones and the ERN amplitude in a sample of 99 females between 8 and 14 years old. Each participant and the parent who accompanied them completed the Pubertal Developmental Scale (PDS) to assess the degree to which pubertal indicators are present. Participants also completed a Go/NoGo Task while EEG was recorded and participants provided saliva samples for hormone assays. Results indicated that ERN was significantly related to both the dehydroepiandrosterone (DHEA) hormone and PDS scores. A simultaneous multivariate regression suggested that DHEA levels significantly predict the ERN, even when controlling for age, behavioral variables, and PDS. These findings suggest that ERN amplitude is related to DHEA levels, further linking puberty to developmental increases in the ERN. Future research should examine this relationship in the context of developmental increases in anxiety symptoms.
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Affiliation(s)
- Julia Y Gorday
- Department of Psychology, Florida State University, Tallahassee, Florida
| | - Alexandria Meyer
- Department of Psychology, Florida State University, Tallahassee, Florida
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249
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Poulsen R, Cedergreen N, Hayes T, Hansen M. Nitrate: An Environmental Endocrine Disruptor? A Review of Evidence and Research Needs. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:3869-3887. [PMID: 29494771 DOI: 10.1021/acs.est.7b06419] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Nitrate is heavily used as an agricultural fertilizer and is today a ubiquitous environmental pollutant. Environmental endocrine effects caused by nitrate have received increasing attention over the last 15 years. Nitrate is hypothesized to interfere with thyroid and steroid hormone homeostasis and developmental and reproductive end points. The current review focuses on aquatic ecotoxicology with emphasis on field and laboratory controlled in vitro and in vivo studies. Furthermore, nitrate is just one of several forms of nitrogen that is present in the environment and many of these are quickly interconvertible. Therefore, the focus is additionally confined to the oxidized nitrogen species (nitrate, nitrite and nitric oxide). We reviewed 26 environmental toxicology studies and our main findings are (1) nitrate has endocrine disrupting properties and hypotheses for mechanisms exist, which warrants for further investigations; (2) there are issues determining actual nitrate-speciation and abundance is not quantified in a number of studies, making links to speciation-specific effects difficult; and (3) more advanced analytical chemistry methodologies are needed both for exposure assessment and in the determination of endocrine biomarkers.
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Affiliation(s)
- Rikke Poulsen
- Department of Plant and Environmental Sciences , University of Copenhagen , Thorvaldsensvej 40 , 1871 Frederiksberg , Denmark
| | - Nina Cedergreen
- Department of Plant and Environmental Sciences , University of Copenhagen , Thorvaldsensvej 40 , 1871 Frederiksberg , Denmark
| | - Tyrone Hayes
- Laboratory for Integrative Studies in Amphibian Biology, Molecular Toxicology, Group in Endocrinology, Energy and Resources Group, Museum of Vertebrate Zoology, and Department of Integrative Biology , University of California , Berkeley , California 94720 , United States
| | - Martin Hansen
- Department of Plant and Environmental Sciences , University of Copenhagen , Thorvaldsensvej 40 , 1871 Frederiksberg , Denmark
- Laboratory for Integrative Studies in Amphibian Biology, Molecular Toxicology, Group in Endocrinology, Energy and Resources Group, Museum of Vertebrate Zoology, and Department of Integrative Biology , University of California , Berkeley , California 94720 , United States
- Department of Environmental and Civil Engineering , University of California , Berkeley , California 94720 , United States
- Department of Environmental Science , Aarhus University , 4000 Roskilde , Denmark
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250
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Harris KM, McDade TW. The Biosocial Approach to Human Development, Behavior, and Health Across the Life Course. THE RUSSELL SAGE FOUNDATION JOURNAL OF THE SOCIAL SCIENCES : RSF 2018; 4:2-26. [PMID: 30923747 PMCID: PMC6434524 DOI: 10.7758/rsf.2018.4.4.01] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Social and biological phenomena are widely recognized as determinants of human development, health, and socioeconomic attainments across the life course, but our understanding of the underlying pathways and processes remains limited. To address this gap, we define the "biosocial approach" as one that conceptualizes the biological and social as mutually constituting, and that draws on models and methods from the biomedical and social/behavioral sciences. By bringing biology into the social sciences, we can illuminate mechanisms through which socioeconomic, psychosocial, and other contextual factors shape human development and health. Human biology is a social biology, and biological measures can therefore identify aspects of social contexts that are harmful, as well as beneficial, with respect to well-being. By bringing social science concepts and study designs to biology and biomedicine, we encourage an epistemological shift that foregrounds social/contextual factors as important determinants of human biology and health. The biosocial approach also underscores the importance of the life course, as assessments of both biological and social features throughout human development over time, and across generations, are needed to achieve a full understanding of social and physical well-being. We conclude with a brief review of the papers in the volume, which showcase the value of a biosocial approach to understanding the pathways linking social stratification, biology, and health across the life course.
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Affiliation(s)
| | - Thomas W McDade
- Northwestern University, 1810 Hinman Avenue, Evanston, IL 60208, /467-4304,
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