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Gołyszny M, Zieliński M, Obuchowicz E. Acute Stress Affects the Relaxin/Insulin-Like Family Peptide Receptor 3 mRNA Expression in Brain of Pubertal Male Wistar Rats. Dev Psychobiol 2024; 66:e22523. [PMID: 38970242 DOI: 10.1002/dev.22523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 05/13/2024] [Accepted: 06/13/2024] [Indexed: 07/08/2024]
Abstract
The current literature suggests that relaxin-3/relaxin/insulin-like family peptide receptor 3 (RLN-3/RXFP-3) system is involved in the pathophysiology of affective disorders because the results of anatomical and pharmacological studies have shown that the RLN-3 signaling pathway plays a role in modulating the stress response, anxiety, arousal, depression-like behavior, and neuroendocrine homeostasis. The risk of developing mental illnesses in adulthood is increased by exposure to stress in early periods of life. The available data indicate that puberty is especially characterized by the development of the neural system and emotionality and is a "stress-sensitive" period. The presented study assessed the short-term changes in the expression of RLN-3 and RXFP-3 mRNA in the stress-dependent brain regions in male pubertal Wistar rats that had been subjected to acute stress. Three stressors were applied from 42 to 44 postnatal days (first day: a single forced swim; second day: stress on an elevated platform that was repeated three times; third day: restraint stress three times). Anxiety (open field, elevated plus maze test) and anhedonic-like behavior (sucrose preference test) were estimated during these tests. The corticosterone (CORT) levels and blood morphology were estimated. We found that the RXFP-3 mRNA expression decreased in the brainstem, whereas it increased in the hypothalamus 72 h after acute stress. These molecular changes were accompanied by the increased levels of CORT and anxiety-like behavior detected in the open field test that had been conducted earlier, that is, 24 h after the stress procedure. These findings shed new light on the neurochemical changes that are involved in the compensatory response to adverse events in pubertal male rats and support other data that suggest a regulatory interplay between the RLN-3 pathway and the hypothalamus-pituitary-adrenal axis activity in the mechanisms of anxiety-like behavior.
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Affiliation(s)
- Miłosz Gołyszny
- Department of Pharmacology, Faculty of Medical Sciences in Katowice, Medical University of Silesia, Katowice, Poland
| | - Michał Zieliński
- Department of Pharmacology, Faculty of Medical Sciences in Katowice, Medical University of Silesia, Katowice, Poland
| | - Ewa Obuchowicz
- Department of Pharmacology, Faculty of Medical Sciences in Katowice, Medical University of Silesia, Katowice, Poland
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Developmental effects of environmental enrichment on selective and auditory sustained attention. Psychoneuroendocrinology 2020; 111:104479. [PMID: 31704636 DOI: 10.1016/j.psyneuen.2019.104479] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Revised: 08/23/2019] [Accepted: 10/11/2019] [Indexed: 01/29/2023]
Abstract
Environmental enrichment (EE) has been used as a positive manipulation in different disease models. However, there is conflicting evidence reported in the literature about the effects of EE. Additionally, the time period that would be most beneficial in implementing environmental enrichment as an intervention is not clear. Our study aimed to systematically compare the prenatal, juvenile, mid-adolescence, and adulthood developmental trajectory to further the understanding of enriched environment's effects on selective and auditory sustained attention, corresponding to behavioral (conceived) and physiological-reflexive (non-conceived) measures. Rats were exposed for 21 days to enriched environment during various developmental periods and compared to age-matched controls. All groups were tested for long-term effects (at postnatal day 120 and onward) on selective and sustained attention. We found that the exposure to enriched environment during mid-adolescence has yielded the most significant and long-term pattern of effects, including selective and auditory sustained attention performance, increased foraging-like behavior and a significant decrease in corticosterone level. Similarly, the exposure to EE at juvenile period improved selective attention, increased foraging-like behavior, and reduced anxiety levels as reflected in the open field as well as in low corticosterone levels. These results specify a crucial period along the developmental trajectory for applying environmental enrichment. Mid-adolescence is suggested, in future basic and translational studies, as the sensitive time period that induces the most beneficial and long-term effects of EE on attention. The current findings suggest that the exposure to EE during mid-adolescence should be further considered and studied as behavioral alternative intervention, or as adjuvant behavioral therapy, aimed to decrease the probability to develop ADHD in post-adolescence period. This suggestion is highly relevant due to the debate regarding the pros and cons of screens usage (e.g. Facebook, online games, etc.) during early life that decreases environmental enrichment, especially, direct social interaction.
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Stress sensitization among severely neglected children and protection by social enrichment. Nat Commun 2019; 10:5771. [PMID: 31852902 PMCID: PMC6920417 DOI: 10.1038/s41467-019-13622-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Accepted: 11/12/2019] [Indexed: 12/24/2022] Open
Abstract
Childhood adversity may sensitize certain individuals to later stress which triggers or amplifies psychopathology. The current study uses data from a longitudinal randomized controlled trial to examine whether severe early neglect among children reared in institutions increases vulnerability to the effects of later stressful life events on externalizing problems in adolescence, and whether social enrichment in the form of high-quality foster care buffers this risk. Children abandoned to Romanian institutions were randomly assigned to a foster care intervention or care-as-usual during early childhood. A sample of never-institutionalized children served as a comparison group. Here we report that, among those with prolonged institutional rearing, more stressful life events in preadolescence predicted higher externalizing problems in adolescence. This effect was not observed for never-institutionalized children or those in foster care, thus providing experimental evidence that positive caregiving experiences protect against the stress-sensitizing effects of childhood neglect on externalizing problems in adolescence. Early adversity may sensitize people to the effects of later stress, amplifying psychopathology risk. Here, the authors show this stress sensitization effect for adolescents who experienced prolonged institutional deprivation in childhood, but not those assigned to foster care intervention.
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Green A, Esser MJ, Perrot TS. Developmental expression of anxiety and depressive behaviours after prenatal predator exposure and early life homecage enhancement. Behav Brain Res 2017; 346:122-136. [PMID: 29183765 DOI: 10.1016/j.bbr.2017.11.028] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Revised: 11/20/2017] [Accepted: 11/22/2017] [Indexed: 01/25/2023]
Abstract
Stressful events during gestation can have sex-specific effects on brain and behaviour, and may contribute to some of the differences observed in adult stress responding and psychopathology. We investigated the impact of a novel repeated prenatal psychological stress (prenatal predator exposure - PPS) during the last week of gestation in rats on offspring behaviours related to social interaction (play behaviour), open field test (OFT), forced swim test (FST) and sucrose preference test (SP) during the juvenile period and in adulthood. We further examined the role of postnatal environmental, using an enhanced housing condition (EHC), to prevent/rescue any changes. Some effects on anxiety, anhedonia, and stress-related coping behaviours (e.g., OFT, SP and OFT) did not emerge until adulthood. PPS increased OFT anxiety behaviours in adult males, and some OFT and SP behaviours in adult females. Contrary to this, EHC had few independent effects; most were apparent only when combined with PPS. In keeping with age-group differences, juvenile behaviours did not necessarily predict the same adult behaviours although juvenile OFT rearing and freezing, and juvenile FST immobility did predict adult FST immobility and sucrose preference, suggesting that some aspects of depressive behaviours may emerge early and predict adult vulnerability or coping behaviours. Together, these results suggest an important, though complex, role for early life psychological stressors and early life behaviours in creating an adult vulnerability to anxiety or depressive disorders and that environmental factors further modulate the effects of the prenatal stressors.
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Affiliation(s)
- Amanda Green
- Department of Psychology and Neuroscience, Dalhousie University, Halifax, Nova Scotia, Canada.
| | - Michael J Esser
- Department of Pediatrics, Alberta Children's Hospital Research Institute, University of Calgary, Calgary, Alberta, Canada
| | - Tara S Perrot
- Department of Psychology and Neuroscience, Dalhousie University, Halifax, Nova Scotia, Canada; Brain Repair Centre, Dalhousie University, Halifax, Nova Scotia, Canada
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Stamps JA, Krishnan V. Age-dependent changes in behavioural plasticity: insights from Bayesian models of development. Anim Behav 2017. [DOI: 10.1016/j.anbehav.2017.01.013] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Carneiro de Oliveira PE, Leão RM, Bianchi PC, Marin MT, Planeta CDS, Cruz FC. Stress-Induced Locomotor Sensitization to Amphetamine in Adult, but not in Adolescent Rats, Is Associated with Increased Expression of ΔFosB in the Nucleus Accumbens. Front Behav Neurosci 2016; 10:173. [PMID: 27672362 PMCID: PMC5018519 DOI: 10.3389/fnbeh.2016.00173] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Accepted: 08/30/2016] [Indexed: 12/18/2022] Open
Abstract
While clinical and pre-clinical evidence suggests that adolescence is a risk period for the development of addiction, the underlying neural mechanisms are largely unknown. Stress during adolescence has a huge influence on drug addiction. However, little is known about the mechanisms related to the interaction among stress, adolescence and addiction. Studies point to ΔFosB as a possible target for this phenomenon. In the present study, adolescent and adult rats (postnatal day 28 and 60, respectively) were restrained for 2 h once a day for 7 days. Three days after their last exposure to stress, the animals were challenged with saline or amphetamine (1.0 mg/kg i.p.) and amphetamine-induced locomotion was recorded. Immediately after the behavioral tests, rats were decapitated and the nucleus accumbens was dissected to measure ΔFosB protein levels. We found that repeated restraint stress increased amphetamine-induced locomotion in both the adult and adolescent rats. Furthermore, in adult rats, stress-induced locomotor sensitization was associated with increased expression of ΔFosB in the nucleus accumbens. Our data suggest that ΔFosB may be involved in some of the neuronal plasticity changes associated with stress induced-cross sensitization with amphetamine in adult rats.
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Affiliation(s)
- Paulo E Carneiro de Oliveira
- Laboratory of Pharmacology, School of Pharmaceutical Sciences, São Paulo State University-UNESP Araraquara, Brazil
| | - Rodrigo M Leão
- Laboratory of Pharmacology, School of Pharmaceutical Sciences, São Paulo State University-UNESP Araraquara, Brazil
| | - Paula C Bianchi
- Laboratory of Pharmacology, School of Pharmaceutical Sciences, São Paulo State University-UNESPAraraquara, Brazil; Joint Graduate Program in Physiological Sciences, UFSCar/UNESP, Faculdade de Odontologia de AraraquaraAraraquara, Brazil
| | - Marcelo T Marin
- Laboratory of Pharmacology, School of Pharmaceutical Sciences, São Paulo State University-UNESPAraraquara, Brazil; Joint Graduate Program in Physiological Sciences, UFSCar/UNESP, Faculdade de Odontologia de AraraquaraAraraquara, Brazil
| | - Cleopatra da Silva Planeta
- Laboratory of Pharmacology, School of Pharmaceutical Sciences, São Paulo State University-UNESPAraraquara, Brazil; Joint Graduate Program in Physiological Sciences, UFSCar/UNESP, Faculdade de Odontologia de AraraquaraAraraquara, Brazil
| | - Fábio C Cruz
- Laboratory of Pharmacology, School of Pharmaceutical Sciences, São Paulo State University-UNESP Araraquara, Brazil
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Bennett GA, Palliser HK, Walker D, Hirst J. Severity and timing: How prenatal stress exposure affects glial developmental, emotional behavioural and plasma neurosteroid responses in guinea pig offspring. Psychoneuroendocrinology 2016; 70:47-57. [PMID: 27155257 DOI: 10.1016/j.psyneuen.2016.04.011] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Revised: 04/13/2016] [Accepted: 04/13/2016] [Indexed: 11/18/2022]
Abstract
Prenatal stress has been associated with a variety of developmental changes in offspring, notably those associated with brain development and subsequent risk for neuropathologies later in life. Recently, the importance of the timing and the severity of the stressor during pregnancy has been emphasized with neurosteroids including allopregnanolone implicated in the regulation of stress and also for endogenous neuroprotection in offspring. Prenatal stress was induced using strobe light exposure in pregnant guinea pigs (term 71days) in three defined stress exposure groups (Gestational Age (GA)35-65, GA50-65 and GA60-65). Stress was induced for 2h (9-11am) every 5days via strobe light exposure. A fetal cohort were euthanased at term with fetal brains and plasma collected. Anxiety-like behaviour was evaluated at 18 days of age in a separate cohort of offspring with brains and plasma collected at 21days of age. Markers for mature oligodendrocytes and reactive astrocytes were measured in the CA1 region of the hippocampus and the subcortical white matter. The neurosteroid allopregnanolone was measured by radioimmunoassay in offspring plasma. In the CA1 region of the hippocampus, fetuses from all stress groups showed reduced expression of mature oligodendrocytes and reactive astrocytes. By juvenility, all male stress exposure groups had recovered to levels of unaffected controls with the exception of the GA35-65 stress group. In juvenile females, mature oligodendrocyte marker expression was reduced in all stress groups and reactive astrocyte expression was reduced in the GA35-65 and GA60-65 stress groups by juvenility. Increased reactive astrocyte expression was also apparent in the subcortical white matter in both sexes both at term and at juvenility. Prenatally stressed offspring spent less time exploring in the object exploration test and also entered the inner zone of the open field less than controls at 18days of age. Circulating allopregnanolone concentrations were significantly reduced in GA35-65 and GA 60-65 stress exposed fetuses with those in the GA35-65 stress group remaining reduced by juvenility. This study has shown the effects of differing levels of prenatal stress severity and timing on glial development, emotional behaviour and plasma allopregnanolone concentrations in offspring.
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Affiliation(s)
- Greer A Bennett
- Mothers and Babies Research Centre, Hunter Medical Research Institute, Newcastle, NSW, Australia; School of Biomedical Sciences and Pharmacy, University of Newcastle, NSW, Australia.
| | - Hannah K Palliser
- Mothers and Babies Research Centre, Hunter Medical Research Institute, Newcastle, NSW, Australia; School of Biomedical Sciences and Pharmacy, University of Newcastle, NSW, Australia
| | - David Walker
- Hudson Institute of Medical Research, Clayton, VIC, Australia
| | - Jonathan Hirst
- Mothers and Babies Research Centre, Hunter Medical Research Institute, Newcastle, NSW, Australia; School of Biomedical Sciences and Pharmacy, University of Newcastle, NSW, Australia
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Latsko MS, Farnbauch LA, Gilman TL, Lynch JF, Jasnow AM. Corticosterone may interact with peripubertal development to shape adult resistance to social defeat. Horm Behav 2016; 82:38-45. [PMID: 27108196 DOI: 10.1016/j.yhbeh.2016.04.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2016] [Revised: 04/15/2016] [Accepted: 04/16/2016] [Indexed: 01/06/2023]
Abstract
Studies of social stress in adult mice have revealed two distinct defeat-responsive behavioral phenotypes; "susceptible" and "resistant," characterized by social avoidance and social interaction, respectively. Typically, these phenotypes are observed at least 1day after the last defeat in adults, but may extend up to 30days later. The current study examined the impact of peripubertal social defeat on immediate (1day) and adult (30day) social stress phenotypes and neuroendocrine function in male C57BL/6 mice. Initially, peripubertal (P32) mice were resistant to social defeat. When the same mice were tested for social interaction again as adults (P62), two phenotypes emerged; a group of mice were characterized as susceptible evidenced by significantly lower social interaction, whereas the remaining mice exhibited normal social interaction, characteristic of resistance. A repeated analysis of corticosterone revealed that the adult (P62) resistant mice had elevated corticosterone following the social interaction test as juveniles. This was when all mice, regardless of adult phenotype, displayed equivalent levels of social interaction. Peripubertal corticosterone was positively correlated with adult social interaction levels in defeated mice, suggesting early life stress responsiveness impacts adult social behavior. In addition, adult corticotropin-releasing factor (CRF) mRNA in the paraventricular nucleus of the hypothalamus (PVN) was elevated in all defeated mice, but there were no differences in CRF mRNA expression between the phenotypes. Thus, there is a delayed appearance of social stress-responsive phenotypes suggesting that early life stress exposure, combined with the resultant physiological responses, may interact with pubertal development to influence adult social behavior.
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Affiliation(s)
- Maeson S Latsko
- Department of Psychological Sciences, Kent State University, Kent, OH 44242, United States
| | - Laure A Farnbauch
- Department of Psychological Sciences, Kent State University, Kent, OH 44242, United States
| | - T Lee Gilman
- Department of Psychological Sciences, Kent State University, Kent, OH 44242, United States
| | - Joseph F Lynch
- Department of Psychological Sciences, Kent State University, Kent, OH 44242, United States
| | - Aaron M Jasnow
- Department of Psychological Sciences, Kent State University, Kent, OH 44242, United States.
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Rotenberg S, McGrath JJ. Inter-relation between autonomic and HPA axis activity in children and adolescents. Biol Psychol 2016; 117:16-25. [PMID: 26835595 DOI: 10.1016/j.biopsycho.2016.01.015] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2014] [Revised: 01/27/2016] [Accepted: 01/27/2016] [Indexed: 11/30/2022]
Abstract
Stress research in youth typically considers either the autonomic nervous system or HPA axis. However, these systems are highly coordinated and physically interconnected. We examined whether the inter-relation between cardio-autonomic and HPA axis measures was better associated with perceived stress than their singular associations. Children and adolescents (N=201) collected saliva samples to measure cortisol (AUCAG, AUCI, maximum), wore an electrocardiogram monitor for 24h to derive heart rate variability (HRV; LF, HF, LF/HF ratio), and completed the Perceived Stress Scale. The interaction between sympathovagal modulation (LF, LF/HF ratio) and cortisol awakening response (AUCAG, AUCI, maximum) explained significantly greater variance in perceived stress than either stress system alone. Higher sympathovagal modulation combined with higher cortisol awakening response was associated with greater perceived stress. Findings suggest that the inter-relation between cardio-autonomic and HPA axis activity may advance our understanding of how stress impacts health.
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Ardi Z, Albrecht A, Richter-Levin A, Saha R, Richter-Levin G. Behavioral profiling as a translational approach in an animal model of posttraumatic stress disorder. Neurobiol Dis 2016; 88:139-47. [PMID: 26804028 DOI: 10.1016/j.nbd.2016.01.012] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2015] [Revised: 01/12/2016] [Accepted: 01/19/2016] [Indexed: 12/28/2022] Open
Abstract
Diagnosis of psychiatric disorders in humans is based on comparing individuals to the normal population. However, many animal models analyze averaged group effects, thus compromising their translational power. This discrepancy is particularly relevant in posttraumatic stress disorder (PTSD), where only a minority develop the disorder following a traumatic experience. In our PTSD rat model, we utilize a novel behavioral profiling approach that allows the classification of affected and unaffected individuals in a trauma-exposed population. Rats were exposed to underwater trauma (UWT) and four weeks later their individual performances in the open field and elevated plus maze were compared to those of the control group, allowing the identification of affected and resilient UWT-exposed rats. Behavioral profiling revealed that only a subset of the UWT-exposed rats developed long-lasting behavioral symptoms. The proportion of affected rats was further enhanced by pre-exposure to juvenile stress, a well-described risk factor of PTSD. For a biochemical proof of concept we analyzed the expression levels of the GABAA receptor subunits α1 and α2 in the ventral, dorsal hippocampus and basolateral amygdala. Increased expression, mainly of α1, was observed in ventral but not dorsal hippocampus of exposed animals, which would traditionally be interpreted as being associated with the exposure-resultant psychopathology. However, behavioral profiling revealed that this increased expression was confined to exposed-unaffected individuals, suggesting a resilience-associated expression regulation. The results provide evidence for the importance of employing behavioral profiling in animal models of PTSD, in order to better understand the neural basis of stress vulnerability and resilience.
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Affiliation(s)
- Ziv Ardi
- Sagol Department of Neurobiology, University of Haifa, Israel; The Institute for the Study of Affective Neuroscience (ISAN), University of Haifa, Israel.
| | - Anne Albrecht
- Sagol Department of Neurobiology, University of Haifa, Israel; The Institute for the Study of Affective Neuroscience (ISAN), University of Haifa, Israel
| | - Alon Richter-Levin
- The Institute for the Study of Affective Neuroscience (ISAN), University of Haifa, Israel
| | - Rinki Saha
- Sagol Department of Neurobiology, University of Haifa, Israel; The Institute for the Study of Affective Neuroscience (ISAN), University of Haifa, Israel
| | - Gal Richter-Levin
- Sagol Department of Neurobiology, University of Haifa, Israel; The Institute for the Study of Affective Neuroscience (ISAN), University of Haifa, Israel; Psychology Department, University of Haifa, Israel
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Helmreich DL, Fudge JL. Letter to the Editor. Psychoneuroendocrinology 2015; 60:57. [PMID: 26135200 DOI: 10.1016/j.psyneuen.2015.04.025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2015] [Revised: 04/22/2015] [Accepted: 04/29/2015] [Indexed: 11/20/2022]
Affiliation(s)
- Dana L Helmreich
- Department of Psychiatry, University of Rochester Medical Center, United States
| | - Julie L Fudge
- Department of Psychiatry, University of Rochester Medical Center, United States; Department of Neurobiology and Anatomy, University of Rochester Medical Center, United States.
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Debost JC, Petersen L, Grove J, Hedemand A, Khashan A, Henriksen T, Mors O, Hollegaard M, Hougaard D, Nyegaard M, Børglum A, Mortensen PB. Investigating interactions between early life stress and two single nucleotide polymorphisms in HSD11B2 on the risk of schizophrenia. Psychoneuroendocrinology 2015; 60:18-27. [PMID: 26115144 DOI: 10.1016/j.psyneuen.2015.05.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Revised: 05/28/2015] [Accepted: 05/29/2015] [Indexed: 01/22/2023]
Abstract
BACKGROUND To examine the risk of schizophrenia in a Danish population after exposure to early life stress, and whether this risk is modified by DNA sequence variation, specifically two single nucleotide polymorphisms (SNPs) (rs5479 and rs56303414) from the gene HSD11B2. This gene encodes the enzyme 11-β hydroxysteroid dehydrogenase type 2 which converts active cortisol into inactive cortisone. METHODS A two-stage analysis involving (1) a population-based cohort study, and (2) a nested case-control study using genotype information. Stage 1 included 1,141,447 people; here, we calculated incidence rate ratios (IRR) for the risk of schizophrenia among children of mothers who experienced loss or serious illness of close relatives before, during, and after pregnancy. In stage 2, we genotyped rs5479 and rs56303414 among 1275 schizophrenia cases and 1367 controls, and investigated interactions between genotypes and early life stress on the risk of schizophrenia. RESULTS In stage 1, no increased risk of schizophrenia was found in offspring after exposure during pregnancy, but offspring exposed to early life stress at age 0-2 years had a significantly increased risk of schizophrenia (adjusted IRR 1.18, 95% confidence interval 1.07-1.31). For rs5479, the minor allele was nucleotide A, and the major allele was nucleotide C. No interaction was found between rs5479 and exposure during pregnancy. Individuals with the minor A allele of rs5479, however, had a significantly increased risk of schizophrenia after exposure to early life stress at age 3-9 years (adjusted IRR 2.06, 1.04-4.06). No interaction was found between rs56303414 and exposure in any of the time periods. CONCLUSION No association was found between exposure to early life stress during pregnancy and schizophrenia in the offspring investigated, whereas individuals exposed to early life stress within the first two years of life had an increased risk. No interaction was found between HSD11B2 and exposure during pregnancy, but individuals with the A allele of rs5479 had an increased risk of schizophrenia after exposure at age 3-9 years.
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Affiliation(s)
- Jean-Christophe Debost
- National Center for Register-based Research, Department of Economics and Business, Aarhus University, Denmark; The Lundbeck Foundation Initiative for Integrative Psychiatric Research, iPSYCH, Denmark.
| | - Liselotte Petersen
- National Center for Register-based Research, Department of Economics and Business, Aarhus University, Denmark; The Lundbeck Foundation Initiative for Integrative Psychiatric Research, iPSYCH, Denmark
| | - Jakob Grove
- The Lundbeck Foundation Initiative for Integrative Psychiatric Research, iPSYCH, Denmark; Department of Biomedicine, Aarhus University, Denmark; Bioinformatics Research Centre, Aarhus University, Aarhus, Denmark; iSEQ, Centre for Integrative Sequencing, Aarhus University, Aarhus, Denmark
| | - Anne Hedemand
- The Lundbeck Foundation Initiative for Integrative Psychiatric Research, iPSYCH, Denmark; Department of Biomedicine, Aarhus University, Denmark; Bioinformatics Research Centre, Aarhus University, Aarhus, Denmark
| | - Ali Khashan
- The Irish Centre for Fetal and Neonatal Translational Research (INFANT), Department of Obstetrics and Gynaecology, University College Cork, Cork, Ireland; Department of Epidemiology and Public Health, University College Cork, Cork, Ireland
| | - Tine Henriksen
- Perinatal Epidemiology Research Unit, Department of Pediatrics, Aarhus University Hospital, Denmark
| | - Ole Mors
- The Lundbeck Foundation Initiative for Integrative Psychiatric Research, iPSYCH, Denmark; iSEQ, Centre for Integrative Sequencing, Aarhus University, Aarhus, Denmark; Centre for Psychiatric Research, Aarhus University Hospital, Risskov, Denmark
| | - Mads Hollegaard
- Danish Centre for Neonatal Screening, Statens Serum Institut, Denmark
| | - David Hougaard
- Danish Centre for Neonatal Screening, Statens Serum Institut, Denmark
| | - Mette Nyegaard
- The Lundbeck Foundation Initiative for Integrative Psychiatric Research, iPSYCH, Denmark; Department of Biomedicine, Aarhus University, Denmark; iSEQ, Centre for Integrative Sequencing, Aarhus University, Aarhus, Denmark
| | - Anders Børglum
- The Lundbeck Foundation Initiative for Integrative Psychiatric Research, iPSYCH, Denmark; Department of Biomedicine, Aarhus University, Denmark; iSEQ, Centre for Integrative Sequencing, Aarhus University, Aarhus, Denmark
| | - Preben Bo Mortensen
- National Center for Register-based Research, Department of Economics and Business, Aarhus University, Denmark; The Lundbeck Foundation Initiative for Integrative Psychiatric Research, iPSYCH, Denmark
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Cymerblit-Sabba A, Aga-Mizrachi S, Zubedat S, Grinstein D, Avital A. In the letter to the editor from Fudge and Helmreich, the authors related to our recent publication (Cymerblit-Sabbaet al., 2015). Psychoneuroendocrinology 2015; 58:152-3. [PMID: 25996883 DOI: 10.1016/j.psyneuen.2015.04.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2015] [Accepted: 04/29/2015] [Indexed: 11/24/2022]
Affiliation(s)
- A Cymerblit-Sabba
- Department of Physiology, The Rappaport Faculty of Medicine, Technion - Israel Institute of Technology, Haifa, Israel
| | - S Aga-Mizrachi
- Department of Physiology, The Rappaport Faculty of Medicine, Technion - Israel Institute of Technology, Haifa, Israel
| | - S Zubedat
- Department of Physiology, The Rappaport Faculty of Medicine, Technion - Israel Institute of Technology, Haifa, Israel
| | - D Grinstein
- Department of Physiology, The Rappaport Faculty of Medicine, Technion - Israel Institute of Technology, Haifa, Israel
| | - A Avital
- Department of Physiology, The Rappaport Faculty of Medicine, Technion - Israel Institute of Technology, Haifa, Israel.
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Malta A, de Moura EG, Ribeiro TA, Tófolo LP, Abdennebi-Najar L, Vieau D, Barella LF, de Freitas Mathias PC, Lisboa PC, de Oliveira JC. Protein-energy malnutrition at mid-adulthood does not imprint long-term metabolic consequences in male rats. Eur J Nutr 2015; 55:1423-33. [PMID: 26133298 DOI: 10.1007/s00394-015-0960-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2014] [Accepted: 06/10/2015] [Indexed: 12/25/2022]
Abstract
PURPOSE The long-term effects of the development of chronic metabolic diseases such as type 2 diabetes and obesity have been associated with nutritional insults in critical life stages. In this study, we evaluated the effect of a low-protein diet on metabolism in mid-adulthood male rats. METHODS At 90 days of age, Wistar male rats were fed a low-protein diet (4.0 %, LP group) for 30 days, whereas control rats were fed a normal-protein diet (20.5 %, NP group) throughout their lifetimes. To allow for dietary rehabilitation, from 120 to 180 days of age, the LP rats were fed a normal-protein diet. Then, we measured body composition, fat stores, glucose-insulin homeostasis and pancreatic islet function. RESULTS At 120 days of age, just after low-protein diet treatment, the LP rats displayed a strong lean phenotype, hypoinsulinemia, as assessed under fasting and glucose tolerance test conditions, as well as weak pancreatic islet insulinotropic response to glucose and acetylcholine (p < 0.01). At 180 days of age, after poor-protein diet rehabilitation, the LP rats displayed a slight lean phenotype (p < 0.05), which was associated with a high body weight gain (p < 0.001). Additionally, fat pad accumulation, glycemia and insulinemia, as well as the pancreatic islet insulinotropic response, were not significantly different between the LP and NP rats (p > 0.05). CONCLUSIONS Taken together, the present data suggest that the effects of dietary restriction as a stressor in adulthood are reversible with dietary rehabilitation, indicating that adulthood is not a sensitive or critical time window for metabolic programming.
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Affiliation(s)
- Ananda Malta
- Laboratory of Secretion Cell Biology, Department of Biotechnology, Genetic and Cell Biology, State University of Maringa/UEM, Block H67, Room 19, Colombo Avenue 5790, Maringá, PR, 87020-900, Brazil
| | - Egberto Gaspar de Moura
- Laboratory of Endocrine Physiology, Department of Physiological Sciences, Biology Institute, State University of Rio de Janeiro, Rio De Janeiro, RJ, Brazil
| | - Tatiane Aparecida Ribeiro
- Laboratory of Secretion Cell Biology, Department of Biotechnology, Genetic and Cell Biology, State University of Maringa/UEM, Block H67, Room 19, Colombo Avenue 5790, Maringá, PR, 87020-900, Brazil
| | - Laize Peron Tófolo
- Laboratory of Secretion Cell Biology, Department of Biotechnology, Genetic and Cell Biology, State University of Maringa/UEM, Block H67, Room 19, Colombo Avenue 5790, Maringá, PR, 87020-900, Brazil
| | | | - Didier Vieau
- Maternal Perinatal Undernutrition Team, Perinatal Environment and Growth Laboratory, Lille-North of France University, University of Sciences and Technologies of Lille, Villeneuve d'Ascq Cedex, France
| | - Luiz Felipe Barella
- Laboratory of Secretion Cell Biology, Department of Biotechnology, Genetic and Cell Biology, State University of Maringa/UEM, Block H67, Room 19, Colombo Avenue 5790, Maringá, PR, 87020-900, Brazil
| | - Paulo Cezar de Freitas Mathias
- Laboratory of Secretion Cell Biology, Department of Biotechnology, Genetic and Cell Biology, State University of Maringa/UEM, Block H67, Room 19, Colombo Avenue 5790, Maringá, PR, 87020-900, Brazil
| | - Patrícia Cristina Lisboa
- Laboratory of Endocrine Physiology, Department of Physiological Sciences, Biology Institute, State University of Rio de Janeiro, Rio De Janeiro, RJ, Brazil
| | - Júlio Cezar de Oliveira
- Laboratory of Secretion Cell Biology, Department of Biotechnology, Genetic and Cell Biology, State University of Maringa/UEM, Block H67, Room 19, Colombo Avenue 5790, Maringá, PR, 87020-900, Brazil.
- Laboratory of Endocrine Physiology, Department of Physiological Sciences, Biology Institute, State University of Rio de Janeiro, Rio De Janeiro, RJ, Brazil.
- Health Sciences Institute, Federal University of Mato Grosso, Sinop, MT, Brazil.
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