1
|
Sominsky L, O'Hely M, Drummond K, Cao S, Collier F, Dhar P, Loughman A, Dawson S, Tang ML, Mansell T, Saffery R, Burgner D, Ponsonby AL, Vuillermin P. Pre-pregnancy obesity is associated with greater systemic inflammation and increased risk of antenatal depression. Brain Behav Immun 2023; 113:189-202. [PMID: 37437818 DOI: 10.1016/j.bbi.2023.07.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 06/29/2023] [Accepted: 07/05/2023] [Indexed: 07/14/2023] Open
Abstract
BACKGROUND Pre-pregnancy obesity is an emerging risk factor for perinatal depression. However, the underlying mechanisms remain unclear. We investigated the association between pre-pregnancy body mass index (BMI) and perinatal depressive symptoms in a large population-based pre-birth cohort, the Barwon Infant Study. We also assessed whether the levels of circulating inflammatory markers during pregnancy mediated this relationship. METHODS Depressive symptoms were assessed in 883 women using the Edinburgh Postnatal Depression Scale (EPDS) and psychological stress using the Perceived Stress Scale (PSS) at 28 weeks gestation and 4 weeks postpartum. Glycoprotein acetyls (GlycA), high-sensitivity C-reactive protein (hsCRP) and cytokines were assessed at 28 weeks gestation. We performed regression analyses, adjusted for potential confounders, and investigated mediation using nested counterfactual models. RESULTS The estimated effect of pre-pregnancy obesity (BMI ≥ 30 kg/m2) on antenatal EPDS scores was 1.05 points per kg/m2 increase in BMI (95% CI: 0.20, 1.90; p = 0.02). GlycA, hsCRP, interleukin (IL) -1ra and IL-6 were higher in women with obesity, compared to healthy weight women, while eotaxin and IL-4 were lower. Higher GlycA was associated with higher EPDS and PSS scores and partially mediated the association between pre-pregnancy obesity and EPDS/PSS scores in unadjusted models, but this association attenuated upon adjustment for socioeconomic adversity. IL-6 and eotaxin were negatively associated with EPDS/PSS scores, however there was no evidence for mediation. CONCLUSIONS Pre-pregnancy obesity increases the risk of antenatal depressive symptoms and is also associated with systemic inflammation during pregnancy. While discrete inflammatory markers are associated with antenatal depressive symptoms and perceived stress, their role in mediating the effects of pre-pregnancy obesity on antenatal depression requires further investigation.
Collapse
Affiliation(s)
- Luba Sominsky
- Barwon Health, Geelong, Victoria, Australia; Deakin University, IMPACT - the Institute for Mental and Physical Health and Clinical Translation, School of Medicine, Geelong, Victoria, Australia.
| | - Martin O'Hely
- Deakin University, IMPACT - the Institute for Mental and Physical Health and Clinical Translation, School of Medicine, Geelong, Victoria, Australia; Murdoch Children's Research Institute, Royal Children's Hospital, Parkville, Victoria, Australia
| | - Katherine Drummond
- The Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, Victoria, Australia
| | - Sifan Cao
- Deakin University, IMPACT - the Institute for Mental and Physical Health and Clinical Translation, School of Medicine, Geelong, Victoria, Australia
| | - Fiona Collier
- Deakin University, IMPACT - the Institute for Mental and Physical Health and Clinical Translation, School of Medicine, Geelong, Victoria, Australia
| | - Poshmaal Dhar
- Deakin University, IMPACT - the Institute for Mental and Physical Health and Clinical Translation, School of Medicine, Geelong, Victoria, Australia
| | - Amy Loughman
- Deakin University, IMPACT - the Institute for Mental and Physical Health and Clinical Translation, School of Medicine, Geelong, Victoria, Australia
| | - Samantha Dawson
- Deakin University, IMPACT - the Institute for Mental and Physical Health and Clinical Translation, School of Medicine, Geelong, Victoria, Australia
| | - Mimi Lk Tang
- Murdoch Children's Research Institute, Royal Children's Hospital, Parkville, Victoria, Australia; The University of Melbourne, Parkville, Victoria, Australia; Royal Children's Hospital, Melbourne, Victoria, Australia
| | - Toby Mansell
- Murdoch Children's Research Institute, Royal Children's Hospital, Parkville, Victoria, Australia; The University of Melbourne, Parkville, Victoria, Australia
| | - Richard Saffery
- Murdoch Children's Research Institute, Royal Children's Hospital, Parkville, Victoria, Australia
| | - David Burgner
- Murdoch Children's Research Institute, Royal Children's Hospital, Parkville, Victoria, Australia; The University of Melbourne, Parkville, Victoria, Australia; Royal Children's Hospital, Melbourne, Victoria, Australia
| | - Anne-Louise Ponsonby
- The Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, Victoria, Australia
| | - Peter Vuillermin
- Barwon Health, Geelong, Victoria, Australia; Deakin University, IMPACT - the Institute for Mental and Physical Health and Clinical Translation, School of Medicine, Geelong, Victoria, Australia; Murdoch Children's Research Institute, Royal Children's Hospital, Parkville, Victoria, Australia.
| |
Collapse
|
2
|
Pisu MG, Concas L, Siddi C, Serra M, Porcu P. The Allopregnanolone Response to Acute Stress in Females: Preclinical and Clinical Studies. Biomolecules 2022; 12:biom12091262. [PMID: 36139100 PMCID: PMC9496329 DOI: 10.3390/biom12091262] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 08/31/2022] [Accepted: 09/07/2022] [Indexed: 11/24/2022] Open
Abstract
The neuroactive steroid allopregnanolone ((3α,5α)-3-hydroxypregnan-20-one or 3α,5α-THP) plays a key role in the response to stress, by normalizing hypothalamic-pituitary-adrenal (HPA) axis function to restore homeostasis. Most studies have been conducted on male rats, and little is known about the allopregnanolone response to stress in females, despite that women are more susceptible than men to develop emotional and stress-related disorders. Here, we provide an overview of animal and human studies examining the allopregnanolone responses to acute stress in females in the context of stress-related neuropsychiatric diseases and under the different conditions that characterize the female lifespan associated with the reproductive function. The blunted allopregnanolone response to acute stress, often observed in female rats and women, may represent one of the mechanisms that contribute to the increased vulnerability to stress and affective disorders in women under the different hormonal fluctuations that occur throughout their lifespan. These studies highlight the importance of targeting neuroactive steroids as a therapeutic approach for stress-related disorders in women.
Collapse
Affiliation(s)
- Maria Giuseppina Pisu
- Neuroscience Institute, National Research Council of Italy (CNR), 09042 Cagliari, Italy
| | - Luca Concas
- Department of Life and Environment Sciences, Section of Neuroscience and Anthropology, University of Cagliari, 09042 Cagliari, Italy
| | - Carlotta Siddi
- Department of Life and Environment Sciences, Section of Neuroscience and Anthropology, University of Cagliari, 09042 Cagliari, Italy
| | - Mariangela Serra
- Department of Life and Environment Sciences, Section of Neuroscience and Anthropology, University of Cagliari, 09042 Cagliari, Italy
| | - Patrizia Porcu
- Neuroscience Institute, National Research Council of Italy (CNR), 09042 Cagliari, Italy
- Correspondence:
| |
Collapse
|
3
|
Nakagawasai O, Ambo A, Takahashi K, Onogi H, Nishimura Y, Okubo M, Nemoto W, Tan-No K. Intracerebroventricular Administration of Dermorphin-Dynorphin Analogs Producing Antidepressant-Like Effects through Activation of μ<sub>1</sub>- and κ-Opioid Receptors in Mice. Biol Pharm Bull 2022; 45:1203-1207. [DOI: 10.1248/bpb.b22-00164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Osamu Nakagawasai
- Division of Pharmacology, Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University
| | - Akihiro Ambo
- Division of Biochemistry, Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University
| | - Kohei Takahashi
- Department of Pharmacology, School of Pharmacy, International University of Health and Welfare
| | - Hiroshi Onogi
- Division of Pharmacology, Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University
| | - Yuki Nishimura
- Division of Pharmacology, Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University
| | - Myu Okubo
- Division of Pharmacology, Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University
| | - Wataru Nemoto
- Division of Pharmacology, Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University
| | - Koichi Tan-No
- Division of Pharmacology, Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University
| |
Collapse
|
4
|
Xavier S, Soch A, Younesi S, Malik S, Spencer SJ, Sominsky L. Maternal diet before and during pregnancy modulates microglial activation and neurogenesis in the postpartum rat brain. Brain Behav Immun 2021; 98:185-197. [PMID: 34418500 DOI: 10.1016/j.bbi.2021.08.223] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 08/11/2021] [Accepted: 08/14/2021] [Indexed: 01/12/2023] Open
Abstract
The implications of poor maternal diet on offspring metabolic and neuroimmune development are well established. Increasing evidence now suggests that maternal obesity and poor diet can also increase the risk of postpartum mood disorders, but the mechanisms are unknown. Here we investigated the effects of a poor, high-fat-high-sugar diet (HFSD) on peripheral and central inflammation, neurogenesis and postpartum anxiety-like behaviours. We hypothesised that long-term consumption of a HFSD pre- and post-conception would increase the levels of circulating cytokines and induce microglial activation, particularly in the arcuate nucleus of the hypothalamus (ARC), as the primary brain region involved in the integration of satiety signalling; and this would lead to increased anxiety, stress responsivity and disrupted neurogenesis. We further hypothesised that these effects would be ameliorated by consumption of a healthier diet during pregnancy - specifically a diet high in omega-3 polyunsaturated fatty acids (PUFAs). As expected, the HFSD significantly increased pre-conception body weight, elevated circulating cytokines and activated microglia in the ARC, as well as in the basolateral amygdala. The HFSD also significantly increased the numbers of immature (doublecortin (DCX)-positive) neurons in the subgranular/granular region of the hippocampus, a neurogenic response that was, surprisingly, mimicked by consumption of a diet high in omega-3 PUFAs. Despite these effects of peri-pregnancy dietary imbalance, we detected no differences in anxiety-like behaviours or hypothalamic-pituitary-adrenal (HPA) axis reactivity between the groups. A shift to a healthier diet post-conception reversed the peripheral inflammation and alleviated the microglial activation. These novel data indicate the importance of a balanced peri-pregnancy diet and highlight the need for future research into key triggers that alter the neuroimmune balance in the maternal brain.
Collapse
Affiliation(s)
- Soniya Xavier
- School of Health and Biomedical Sciences, RMIT University, Melbourne, VIC, Australia
| | - Alita Soch
- School of Health and Biomedical Sciences, RMIT University, Melbourne, VIC, Australia
| | - Simin Younesi
- School of Health and Biomedical Sciences, RMIT University, Melbourne, VIC, Australia
| | - Sajida Malik
- School of Health and Biomedical Sciences, RMIT University, Melbourne, VIC, Australia
| | - Sarah J Spencer
- School of Health and Biomedical Sciences, RMIT University, Melbourne, VIC, Australia; ARC Centre of Excellence for Nanoscale Biophotonics, RMIT University, Melbourne, VIC, Australia
| | - Luba Sominsky
- School of Health and Biomedical Sciences, RMIT University, Melbourne, VIC, Australia; Barwon Health Laboratory, Barwon Health University Hospital, Geelong, VIC, Australia; Institute for Physical and Mental Health and Clinical Transformation, School of Medicine, Deakin University, Geelong, VIC, Australia.
| |
Collapse
|
5
|
Lopizzo N, Mazzelli M, Zonca V, Begni V, D'Aprile I, Cattane N, Pariante CM, Riva MA, Cattaneo A. Alterations in 'inflammatory' pathways in the rat prefrontal cortex as early biological predictors of the long-term negative consequences of exposure to stress early in life. Psychoneuroendocrinology 2021; 124:104794. [PMID: 33429258 DOI: 10.1016/j.psyneuen.2020.104794] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Revised: 06/24/2020] [Accepted: 06/25/2020] [Indexed: 12/17/2022]
Abstract
Early life stress, especially when experienced during the first period of life, affects the brain developmental trajectories leading to an enhanced vulnerability for stress-related psychiatric disorders later in life. Although both clinical and preclinical studies clearly support this association, the biological pathways deregulated by such exposure, and the effects in shaping the neurodevelopmental trajectories, have so far been poorly investigated. By using the prenatal stress (PNS) model, a well-established rat model of early life stress, we performed transcriptomic analyses in the prefrontal cortex of rats exposed or not to PNS and sacrificed at different postnatal days (PNDs 21, 40, 62). We first investigated the long-lasting mechanisms and pathways affected in the PFC. We have decided to focus on the prefrontal cortex because we have previously shown that this brain region is highly sensitive to PNS exposure. We found that adult animals exposed to PNS show alterations in 389 genes, mainly involved in stress and inflammatory signalling. We then wanted to establish whether PNS exposure could also affect the neurodevelopmental trajectories in order to identify the most critical temporal window. We found that PNS rats show the most significant changes during adolescence (between PND 40 versus PND 21), with alterations of several pathways related to stress, inflammation and metabolism, which were maintained until adulthood.
Collapse
Affiliation(s)
- Nicola Lopizzo
- Biological Psychiatry Unit, IRCCS Istituto Centro San Giovanni di Dio Fatebenefratelli, Brescia, Italy; Department of Pharmacological and Biomolecular Sciences, University of Milan, Italy
| | - Monica Mazzelli
- Biological Psychiatry Unit, IRCCS Istituto Centro San Giovanni di Dio Fatebenefratelli, Brescia, Italy; Department of Pharmacological and Biomolecular Sciences, University of Milan, Italy
| | - Valentina Zonca
- Biological Psychiatry Unit, IRCCS Istituto Centro San Giovanni di Dio Fatebenefratelli, Brescia, Italy; Stress, Psychiatry and Immunology Laboratory, Department of Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience, King's College, London, UK
| | - Veronica Begni
- Department of Pharmacological and Biomolecular Sciences, University of Milan, Italy
| | - Ilari D'Aprile
- Biological Psychiatry Unit, IRCCS Istituto Centro San Giovanni di Dio Fatebenefratelli, Brescia, Italy
| | - Nadia Cattane
- Biological Psychiatry Unit, IRCCS Istituto Centro San Giovanni di Dio Fatebenefratelli, Brescia, Italy
| | - Carmine M Pariante
- Stress, Psychiatry and Immunology Laboratory, Department of Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience, King's College, London, UK
| | - Marco A Riva
- Department of Pharmacological and Biomolecular Sciences, University of Milan, Italy
| | - Annamaria Cattaneo
- Biological Psychiatry Unit, IRCCS Istituto Centro San Giovanni di Dio Fatebenefratelli, Brescia, Italy; Department of Pharmacological and Biomolecular Sciences, University of Milan, Italy.
| |
Collapse
|
6
|
Torgersen JK, Petitti R, Tello S, Lembo VF, Frye CA. Prenatal resident-intruder stress decreases levels of allopregnanolone in the cortex, hypothalamus, and midbrain of males, and increases levels in the hippocampus and cerebellum of female, juvenile rat offspring. Neurobiol Stress 2020; 12:100214. [PMID: 32258257 PMCID: PMC7109511 DOI: 10.1016/j.ynstr.2020.100214] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 02/22/2020] [Accepted: 02/29/2020] [Indexed: 10/25/2022] Open
Abstract
Prenatal stress (PNS) can influence behaviors associated with cognition, reward and emotional regulation, which are controlled by brain areas such as the cortex, hippocampus, hypothalamus, midbrain and cerebellum. Allopregnanolone in these regions modulates behavioral and parasympathetic effects. The current study tested whether exposing pregnant dams to 5 days of resident-intruder stress on prenatal days 15-20 for 10 min altered the levels of allopregnanolone in cortex, hypothalamus, hippocampus, midbrain, and cerebellum of male and female juvenile offspring. In cortex, hypothalamus, and midbrain of male rats exposed to prenatal stress, levels of allopregnanolone were significantly lower compared to all other groups. In the hippocampus and cerebellum, among females exposed to prenatal stress levels were significantly higher compared to all other groups. These differences in allopregnanolone levels varying by prenatal stress, sex and brain regions provide insight in potential mechanism of stress regulation and etiopathophysiology of stress-related disorders.
Collapse
Affiliation(s)
- Jennifer K Torgersen
- University at Albany - State University of New York, Comprehensive Neuropsychological Services, Albany, NY, 12203, USA
| | - Rose Petitti
- University at Albany - State University of New York, Comprehensive Neuropsychological Services, Albany, NY, 12203, USA
| | - Sedric Tello
- University at Albany - State University of New York, Comprehensive Neuropsychological Services, Albany, NY, 12203, USA
| | - Vincent F Lembo
- University at Albany - State University of New York, Comprehensive Neuropsychological Services, Albany, NY, 12203, USA
| | - Cheryl A Frye
- University at Albany - State University of New York, Comprehensive Neuropsychological Services, Albany, NY, 12203, USA
| |
Collapse
|
7
|
Sze Y, Brunton PJ. Sex, stress and steroids. Eur J Neurosci 2019; 52:2487-2515. [DOI: 10.1111/ejn.14615] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Revised: 10/01/2019] [Accepted: 10/03/2019] [Indexed: 12/14/2022]
Affiliation(s)
- Ying Sze
- Centre for Discovery Brain Sciences University of Edinburgh Edinburgh UK
| | - Paula J. Brunton
- Centre for Discovery Brain Sciences University of Edinburgh Edinburgh UK
- Zhejiang University‐University of Edinburgh Joint Institute Haining Zhejiang China
| |
Collapse
|
8
|
Wang D, Xu B, Wang J, Wang H, Guo J, Ji H, Li S, Wu R, Yang H, Lian S. Response of the maternal hypothalamus to cold stress during late pregnancy in rats. Brain Res 2019; 1722:146354. [PMID: 31356783 DOI: 10.1016/j.brainres.2019.146354] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2019] [Revised: 07/24/2019] [Accepted: 07/25/2019] [Indexed: 12/11/2022]
Abstract
Maternal stress is a key risk factor in the development of offspring. We previously identified prenatal cold stress-induced anxiety-like behavior reduced in the offspring of rats along with negative feedback regulation from the maternal hippocampus on the hypothalamic-pituitary-adrenal (HPA) axis during prenatal cold stress. However, the precise function of the maternal hypothalamus response to cold stress during late pregnancy in rats has not yet been determined. Therefore, we examined proteins in the hypothalamus that respond to aldosterone, neurodevelopment, inflammation and apoptosis. Our results show that prenatal cold stress induced the expression of mineralocorticoid receptors (MR) and 11β-hydroxysteroid dehydrogenase type 2 (11β-HSD2), suggesting prenatal cold stress may promote the elevation of aldosterone levels in the hypothalamus. Remarkably, increased expression of brain derived neurotrophic factor (BDNF) helped to replenish intracellular peptidergic stores and ensure homeostatic balance during prenatal cold stress. Furthermore, prenatal cold stress reduced the expression of c-Fos via STAT3 and ERK1/2 pathways in the hypothalamus. Moreover, prenatal cold stress induced NF-κB phosphorylation at Ser536, then promoted the expression of inducible nitric oxide synthase (iNOS) and induced an apoptosis-related protein response. Together, this study confirms that changes in the maternal hypothalamus during cold stress in late pregnancy are directly reflective of the response of the HPA to cold stress and demonstrates how the hypothalamus coordinates cold stress. We suggest mechanisms which might explain how these states might be linked with an abnormal stress response.
Collapse
Affiliation(s)
- Di Wang
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, PR China
| | - Bin Xu
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, PR China
| | - Jianfa Wang
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, PR China
| | - Hai Wang
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, PR China
| | - Jingru Guo
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, PR China
| | - Hong Ji
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, PR China
| | - Shize Li
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, PR China
| | - Rui Wu
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, PR China
| | - Huanmin Yang
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, PR China.
| | - Shuai Lian
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, PR China.
| |
Collapse
|
9
|
Barrientos RM, Brunton PJ, Lenz KM, Pyter L, Spencer SJ. Neuroimmunology of the female brain across the lifespan: Plasticity to psychopathology. Brain Behav Immun 2019; 79:39-55. [PMID: 30872093 PMCID: PMC6591071 DOI: 10.1016/j.bbi.2019.03.010] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 02/25/2019] [Accepted: 03/09/2019] [Indexed: 02/06/2023] Open
Abstract
The female brain is highly dynamic and can fundamentally remodel throughout the normal ovarian cycle as well as in critical life stages including perinatal development, pregnancy and old-age. As such, females are particularly vulnerable to infections, psychological disorders, certain cancers, and cognitive impairments. We will present the latest evidence on the female brain; how it develops through the neonatal period; how it changes through the ovarian cycle in normal individuals; how it adapts to pregnancy and postpartum; how it responds to illness and disease, particularly cancer; and, finally, how it is shaped by old age. Throughout, we will highlight female vulnerability to and resilience against disease and dysfunction in the face of environmental challenges.
Collapse
Affiliation(s)
- R M Barrientos
- Institute for Behavioral Medicine Research, Wexner Medical Centre, The Ohio State University, Columbus, OH 43210, United States; Department of Psychiatry and Behavioral Health, Wexner Medical Centre, The Ohio State University, Columbus, OH 43210, United States; Chronic Brain Injury Program, Discovery Themes Initiative, The Ohio State University, Columbus, OH 43210, United States
| | - P J Brunton
- Centre for Discovery Brain Sciences, University of Edinburgh, Hugh Robson Building, George Square, Edinburgh EH8 9XD, Scotland, UK; Zhejiang University-University of Edinburgh Joint Institute, Zhejiang University School of Medicine, International Campus, Haining, Zhejiang 314400, PR China
| | - K M Lenz
- Institute for Behavioral Medicine Research, Wexner Medical Centre, The Ohio State University, Columbus, OH 43210, United States; Department of Psychology, Department of Neuroscience, The Ohio State University, Columbus, OH 43210, United States
| | - L Pyter
- Institute for Behavioral Medicine Research, Wexner Medical Centre, The Ohio State University, Columbus, OH 43210, United States; Department of Psychiatry and Behavioral Health, Wexner Medical Centre, The Ohio State University, Columbus, OH 43210, United States
| | - S J Spencer
- School of Health and Biomedical Sciences, RMIT University, Melbourne, Vic. 3083, Australia.
| |
Collapse
|
10
|
Lambert KG, Byrnes EM. Challenges to the parental brain: Neuroethological and translational considerations. Front Neuroendocrinol 2019; 53:100747. [PMID: 31004617 DOI: 10.1016/j.yfrne.2019.04.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2018] [Revised: 03/15/2019] [Accepted: 04/16/2019] [Indexed: 02/05/2023]
Abstract
Extending from research documenting adaptive parental responses in nonthreatening contexts, the influences of various neuroethological and physiological challenges on effective parenting responses are considered in the current review. In natural habitats, rodent family units are exposed to predators, compromised resources, and other environmental stressors that disrupt HPA axis functions. With the additional physiological demands associated with caring for offspring, alterations in stress-related neuroendocrine responsiveness contribute to adaptive responses in many challenging contexts. Some environmental contexts, however, such as restricted nesting resources, result in disrupted maternal responses that have a negative impact on offspring wellbeing. Additionally, parental dysregulation associated with exposure to environmental chemicals or pharmacological substances, also compromise maternal responses with effects that often extend to future generations. Continued preclinical and clinical research elucidating parental responses to various stressors and physiological disruptors is necessary to provide valuable translational information identifying threats to effective parenting outcomes.
Collapse
Affiliation(s)
- Kelly G Lambert
- Department of Psychology, University of Richmond, VA 23173, United States.
| | - Elizabeth M Byrnes
- Cummings School of Veterinary Medicine, Tufts University, N. Grafton, MA 01536, United States
| |
Collapse
|
11
|
Melón LC, Hooper A, Yang X, Moss SJ, Maguire J. Inability to suppress the stress-induced activation of the HPA axis during the peripartum period engenders deficits in postpartum behaviors in mice. Psychoneuroendocrinology 2018; 90:182-193. [PMID: 29274662 PMCID: PMC6613202 DOI: 10.1016/j.psyneuen.2017.12.003] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Revised: 11/08/2017] [Accepted: 12/07/2017] [Indexed: 12/21/2022]
Abstract
The stress-induced activation of the hypothalamic-pituitary-adrenal (HPA) axis is normally suppressed during pregnancy. Dysregulation of the HPA axis has been proposed to play a role in postpartum depression. However, direct investigation into the relationship between the HPA axis and postpartum depression has been hindered by the lack of useful animal models. Building on our discovery of a role for the K+/Cl-co-transporter, KCC2, in the GABAergic regulation of CRH neurons in the paraventricular nucleus of the hypothalamus (PVN), critical for mounting the body's physiological response to stress, we assessed the role of KCC2 in the regulation of the HPA axis during pregnancy and the postpartum period. Here we demonstrate that the normal suppression of the stress-induced activation of the HPA axis during the peripartum period involves maintenance of KCC2 in the PVN. Mice lacking KCC2 specifically in corticosterone-releasing hormone (CRH) neurons, which govern the activity of the HPA axis (KCC2/Crh mice), exhibit dysregulation of the HPA axis and abnormal postpartum behaviors. Loss of KCC2 specifically in CRH neurons in the PVN is sufficient to reproduce the depression-like phenotype and deficits in maternal behaviors during the postpartum period. Similarly, chemogenetic activation of CRH neurons in the PVN is sufficient to induce abnormal postpartum behaviors and chemogenetic silencing of CRH neurons in the PVN can ameliorate abnormal postpartum behaviors observed in KCC2/Crh mice. This study demonstrates that dysregulation of the HPA axis is sufficient to induce abnormal postpartum behaviors and deficits in maternal behaviors in mice, providing empirical support for a role of HPA axis dysfunction in the pathophysiology of postpartum depression.
Collapse
Affiliation(s)
- Laverne Camille Melón
- Tufts University School of Medicine, Department of Neuroscience, Boston, MA 02111, United States
| | - Andrew Hooper
- Graduate Program in Neuroscience, Sackler School of Graduate Biomedical Sciences, Tufts University, Boston, MA, 02111, United States
| | - Xuzhong Yang
- Master's Program in Pharmacology & Drug Development, Sackler School of Graduate Biomedical Sciences, Tufts University, Boston, MA, 02111, United States
| | - Stephen J Moss
- Tufts University School of Medicine, Department of Neuroscience, Boston, MA 02111, United States
| | - Jamie Maguire
- Tufts University School of Medicine, Department of Neuroscience, Boston, MA 02111, United States.
| |
Collapse
|
12
|
Evaluating Stress during Pregnancy: Do We Have the Right Conceptions and the Correct Tools to Assess It? J Pregnancy 2018; 2018:4857065. [PMID: 29484210 PMCID: PMC5816839 DOI: 10.1155/2018/4857065] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Accepted: 12/19/2017] [Indexed: 01/08/2023] Open
Abstract
Gestational stress is believed to increase the risk of pregnancy failure and perinatal and adult morbidity and mortality in both the mother and her child or children. However, some contradictions might arise from methodological issues or even from differences in the philosophical grounds that guide the studies on gestational stress. Biased perspectives could lead us to use and/or design inadequate/incomplete panels of biochemical determinations and/or psychological instruments to diagnose it accurately during pregnancy, a psychoneuroimmune-endocrine state in which allostatic loads may be significant. Here, we review these notions and propose a model to evaluate and diagnose stress during pregnancy.
Collapse
|
13
|
Melón L, Hammond R, Lewis M, Maguire J. A Novel, Synthetic, Neuroactive Steroid Is Effective at Decreasing Depression-Like Behaviors and Improving Maternal Care in Preclinical Models of Postpartum Depression. Front Endocrinol (Lausanne) 2018; 9:703. [PMID: 30532739 PMCID: PMC6265503 DOI: 10.3389/fendo.2018.00703] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Accepted: 11/08/2018] [Indexed: 12/21/2022] Open
Abstract
Preclinical testing of treatments for postpartum depression (PPD) has been limited due to the lack of available animal models of such a complex disorder. To address this limitation, our laboratory has generated unique preclinical mouse models that exhibit abnormal postpartum behaviors. Mice with a loss or reduction in the expression of the GABAA receptor (GABAAR) δ subunit (Gabrd -/- or Gabrd +/-, respectively) and mice that lack the K+/Cl- co-transporter, KCC2, specifically in corticotropin-releasing hormone (CRH) neurons (KCC2/Crh mice) exhibit depression-like behaviors restricted to the postpartum period and deficits in maternal care, which serve as useful tools for testing novel therapeutic compounds. Utilizing these preclinical models, we tested the ability of a novel, synthetic, neuroactive steroid developed by SAGE Therapeutics, SGE-516, to improve abnormal postpartum behaviors. Gabrd -/-, Gabrd +/-, and KCC2/Crh dams treated with SGE-516 (450 mg/kg chow) during late pregnancy exhibit a decrease in depression-like behaviors and improvements in maternal care at 48 h postpartum. Interestingly, acute treatment with SGE-516 also exhibits robust therapeutic effects in these preclinical PPD models. We previously discovered abnormal stress reactivity associated with hypothalamic-pituitary-adrenal (HPA) axis dysregulation associated with depression-like behaviors in the preclinical PPD models, evident from an increase in stress-induced corticosterone levels and dephosphorylation and downregulation of KCC2 in the paraventricular nucleus of the hypothalamus (PVN) during the peripartum period. Here we demonstrated that SGE-516 treatment is sufficient to prevent the stress-induced increase in corticosterone and dephosphorylation and downregulation of KCC2 in the PVN. In contrast, and consistent with the distinct pharmacology of SGE-516 compared to benzodiazepines, treatment with clobazam (250 mg/kg chow) did not alter the depression-like phenotype or deficits in maternal care observed in these preclinical models of PPD. These findings are consistent with the positive double-blind, randomized, placebo-controlled trial findings of a similar compound, brexanolone, in the treatment of patients with postpartum depression. Further, these findings validate the use of these preclinical models of PPD for screening novel compounds for the treatment of postpartum depression.
Collapse
Affiliation(s)
- Laverne Melón
- TEACRS Program, Tufts University School of Medicine, Boston, MA, United States
| | | | - Mike Lewis
- SAGE Therapeutics, Cambridge, MA, United States
| | - Jamie Maguire
- Neuroscience Department, Tufts University School of Medicine, Boston, MA, United States
- *Correspondence: Jamie Maguire
| |
Collapse
|
14
|
Cao X, Liu S, Sun J, Yu M, Fang Y, Ding Z. Fentanyl-induced respiratory depression is attenuated in pregnant patients. DRUG DESIGN DEVELOPMENT AND THERAPY 2017; 11:3325-3332. [PMID: 29200828 PMCID: PMC5702171 DOI: 10.2147/dddt.s147304] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Background Respiratory depression is a complication of intravenous fentanyl administration. The effect of pregnancy on respiratory depression following opioid administration is unclear. This study investigated the effect of pregnancy on fentanyl-induced respiratory depression. Patients and methods Female patients were divided into three groups (n=20 per group): control group (non-pregnant and scheduled for laparoscopic surgery), early pregnancy group (pregnant for 45–60 days and scheduled for abortion), and postpartum group (5–7 days postpartum scheduled for complete curettage of uterine cavity). All patients received an intravenous infusion of fentanyl 2 μg/kg. Respiratory rate (RR), end-tidal pressure of carbon dioxide (PETCO2), and pulse oxygen saturation (SpO2) were recorded continuously from just before fentanyl infusion to 15 min after commencing infusion. Plasma levels of progesterone were measured. Results SpO2 levels in the early pregnancy and postpartum groups were significantly higher and the levels of RR and PETCO2 were significantly lower than the control group. RR and SpO2 levels were significantly decreased in all groups, whereas PETCO2 was significantly increased after fentanyl infusion. The rates of RR increase and SpO2 decrease were significantly faster in the control group than in the other groups. The lowest SpO2 after intravenous fentanyl administration was significantly positively correlated with plasma progesterone levels. Conclusion Pregnancy improves fentanyl-induced respiratory depression, which may be associated with the increased levels of plasma progesterone.
Collapse
Affiliation(s)
- Xiaofei Cao
- Department of Anesthesiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Shijiang Liu
- Department of Anesthesiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Jie Sun
- Department of Anesthesiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Min Yu
- Department of Anesthesiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Yin Fang
- Department of Anesthesiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Zhengnian Ding
- Department of Anesthesiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China
| |
Collapse
|
15
|
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.
Collapse
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
| |
Collapse
|
16
|
Behavioral Deficits in Juveniles Mediated by Maternal Stress Hormones in Mice. Neural Plast 2015; 2016:2762518. [PMID: 26819762 PMCID: PMC4706939 DOI: 10.1155/2016/2762518] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Revised: 08/14/2015] [Accepted: 08/25/2015] [Indexed: 12/25/2022] Open
Abstract
Maternal depression has been shown to negatively impact offspring development. Investigation into the impact of maternal depression and offspring behavior has relied on correlative studies in humans. Further investigation into the underlying mechanisms has been hindered by the lack of useful animal models. We previously characterized a mouse model which exhibits depression-like behaviors restricted to the postpartum period and abnormal/fragmented maternal care (Gabrd−/− mice). Here we utilized this unique mouse model to investigate the mechanism(s) through which maternal depression-like behaviors adversely impact offspring development. Cross-fostering experiments reveal increased anxiety-like and depression-like behaviors in mice reared by Gabrd−/− mothers. Wild type and Gabrd−/− mice subjected to unpredictable stress during late pregnancy exhibit decreased pup survival and depression-like behavior in the postpartum period. Exogenous corticosterone treatment in wild type mice during late pregnancy is sufficient to decrease pup survival and induce anxiety-like and depression-like behaviors in the offspring. Further, the abnormal behaviors in juvenile mice reared by Gabrd−/− mice are alleviated by treatment of the mothers with the corticotropin-releasing hormone (CRH) antagonist, Antalarmin. These studies suggest that hyperresponsiveness of the HPA axis is associated with postpartum depression and may mediate the adverse effects of maternal depression on offspring behavior.
Collapse
|
17
|
Fulford AJ. Endogenous nociceptin system involvement in stress responses and anxiety behavior. VITAMINS AND HORMONES 2015; 97:267-93. [PMID: 25677776 DOI: 10.1016/bs.vh.2014.12.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The mechanisms underpinning stress-related behavior and dysfunctional events leading to the expression of neuropsychiatric disorders remain incompletely understood. Novel candidates involved in the neuromodulation of stress, mediated both peripherally and centrally, provide opportunities for improved understanding of the neurobiological basis of stress disorders and may represent targets for novel therapeutic development. This chapter provides an overview of the mechanisms by which the opioid-related peptide, nociceptin, regulates the neuroendocrine stress response and stress-related behavior. In our research, we have employed nociceptin receptor antagonists to investigate endogenous nociceptin function in tonic control over stress-induced activity of the hypothalamo-pituitary-adrenal axis. Nociceptin demonstrates a wide range of functions, including modulation of psychological and inflammatory stress responses, modulation of neurotransmitter release, immune homeostasis, in addition to anxiety and cognitive behaviors. Greater appreciation of the complexity of limbic-hypothalamic neuronal networks, together with attention toward gender differences and the roles of steroid hormones, provides an opportunity for deeper understanding of the importance of the nociceptin system in the context of the neurobiology of stress and behavior.
Collapse
Affiliation(s)
- Allison Jane Fulford
- Centre for Comparative and Clinical Anatomy, University of Bristol, Bristol, BS2 8EJ, United Kingdom.
| |
Collapse
|
18
|
Monasterio N, Vergara E, Morales T. Hormonal influences on neuroimmune responses in the CNS of females. Front Integr Neurosci 2014; 7:110. [PMID: 24478642 PMCID: PMC3894525 DOI: 10.3389/fnint.2013.00110] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2013] [Accepted: 12/25/2013] [Indexed: 11/26/2022] Open
Abstract
Particular reproductive stages such as lactation impose demands on the female. To cope with these demands, her physiology goes through numerous adaptations, for example, attenuation of immune and stress responses. Hormonal fluctuation during lactation exerts a strong influence, inducing neuroplasticity in the hypothalamus and extrahypothalamic regions, and diminishing the stress and inflammatory responses. Thus, hormones confer decreased vulnerability to the female brain. This mini-review focuses on the adaptations of the immune and stress response during maternity, and on the neuroprotective actions of progesterone and prolactin and their effects on inflammation. The importance of pregnancy and lactation as experimental models to study immune responses and disease is also highlighted.
Collapse
Affiliation(s)
- Nela Monasterio
- Departamento de Neurobiología Celular y Molecular, Instituto de Neurobiología, Universidad Nacional Autónoma de México Santiago de Querétaro, México
| | - Edgar Vergara
- Departamento de Biología, Facultad de Química, Universidad Nacional Autónoma de México Ciudad de México, México
| | - Teresa Morales
- Departamento de Neurobiología Celular y Molecular, Instituto de Neurobiología, Universidad Nacional Autónoma de México Santiago de Querétaro, México
| |
Collapse
|
19
|
Voltolini C, Petraglia F. Neuroendocrinology of pregnancy and parturition. HANDBOOK OF CLINICAL NEUROLOGY 2014; 124:17-36. [PMID: 25248577 DOI: 10.1016/b978-0-444-59602-4.00002-2] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
During pregnancy, the maternal brain drives a series of adaptive mechanisms that are fundamental for allowing fetal growth and development, protecting both mother and fetus from adverse programming and timing of parturition. This neuroendocrine concept is even more complex as fetal brain and placenta also participate as regulators of maternal-placental-fetal physiology. The placenta is now seen as a neuroendocrine organ, acting as a source of several neuroactive factors that may exert their biologic effects either locally or by entering maternal and fetal circulation, thus acting in an autocrine, paracrine, and endocrine manner. A variety of hypothalamic neurohormones (GnRH, GHRH, somatostatin, CRH, oxytocin) are expressed in the placenta. When stress occurs during pregnancy, the maternal, fetal, and placental hypothalamic-pituitary-adrenal (HPA) axes are activated to stimulate a series of responses contributing to maintain physiologic conditions while at the same time avoiding the adverse effects of stress on the mother and offspring. However, when stress is excessive, a number of obstetric complications may occur, such as preterm birth, pre-eclampsia and intrauterine growth restriction, related to an impairment of the placental adaptive response.
Collapse
Affiliation(s)
- Chiara Voltolini
- Department of Molecular and Developmental Medicine, University of Siena, Siena, Italy
| | - Felice Petraglia
- Department of Molecular and Developmental Medicine, University of Siena, Siena, Italy.
| |
Collapse
|
20
|
Pajand P, Elahdadi Salmani M, Shajiee H, Abiri H, Goudarzi I, Abrari K. Stress during first pregnancy increases seizure threshold in adult male offspring. IRANIAN JOURNAL OF BASIC MEDICAL SCIENCES 2014; 17:34-40. [PMID: 24592305 PMCID: PMC3938884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/20/2013] [Accepted: 08/20/2013] [Indexed: 11/17/2022]
Abstract
OBJECTIVE(S) Stress induces many homeostatic aberrations which are followed by lifelong allostatic responses. Epilepsy is developed or influenced by different environmental factors, i.e. prenatal stress which makes many contradictory developmental changes in seizure threshold and intensity. We investigated the potential seizure response of the rat offspring to prenatal stress; the stress which was applied to their mothers. MATERIALS AND METHODS Nine day heterogeneous sequential stress (HSS) model was used before and during the first and before the second pregnancy. The kindling was induced using 13 IP injections of pentylenetetrazol (PTZ) every 48 hr to adult male Wistar rat's offspring. RESULTS The results of the present study demonstrated that, before pregnancy stress decreased the rate of kindling (P<0.05) in the offspring, while stress which was applied during pregnancy completely prevented kindling (P <0.001). Further, their convulsive latency was increased and tonic clonic seizure duration was decreased. In contrast, previous pregnancy and between pregnancies stress could not change kindling process. Although maternal separation stress did not change kindling development, it could increase convulsive intensities by elongating the duration of seizures (P<0.05) and reducing convulsion latency (P <0.05). CONCLUSION It is concluded that stress detrimental effects could be prevented by stress which was applied around first pregnancy; however this beneficial effect is weakened by before second pregnancy stress.
Collapse
Affiliation(s)
- Peyman Pajand
- Azad Islamic University-Damghan Branch, Damghan, Iran
| | - Mahmoud Elahdadi Salmani
- School of Biology, Damghan University, Damghan, Iran,Institute of Biological Sciences, Damghan University, Damghan, Iran,Corresponding author: Mahmoud Elahdadi Salmani. School of Biology, Damghan University, Damghan, Iran. Tel: +98-232-5247146, ;
| | | | - Hasan Abiri
- Azad Islamic University-Damghan Branch, Damghan, Iran
| | - Iran Goudarzi
- School of Biology, Damghan University, Damghan, Iran,Institute of Biological Sciences, Damghan University, Damghan, Iran
| | - Kataneh Abrari
- School of Biology, Damghan University, Damghan, Iran,Institute of Biological Sciences, Damghan University, Damghan, Iran
| |
Collapse
|
21
|
Missonnier S. Grossesse, stress et psychanalyse. Un débat primordial. PSYCHIATRIE DE L ENFANT 2013. [DOI: 10.3917/psye.561.0037] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
|
22
|
Anderson G, Maes M. Schizophrenia: linking prenatal infection to cytokines, the tryptophan catabolite (TRYCAT) pathway, NMDA receptor hypofunction, neurodevelopment and neuroprogression. Prog Neuropsychopharmacol Biol Psychiatry 2013; 42:5-19. [PMID: 22800757 DOI: 10.1016/j.pnpbp.2012.06.014] [Citation(s) in RCA: 101] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2012] [Revised: 06/06/2012] [Accepted: 06/18/2012] [Indexed: 02/07/2023]
Abstract
In 1995, the macrophage-T lymphocyte theory of schizophrenia (Smith and Maes, 1995) considered that activated immuno-inflammatory pathways may account for the higher neurodevelopmental pathology linked with gestational infections through the detrimental effects of activated microglia, oxidative and nitrosative stress (O&NS), cytokine-induced activation of the tryptophan catabolite (TRYCAT) pathway and consequent modulation of the N-methyl d-aspartate receptor (NMDAr) and glutamate production. The aim of the present paper is to review the current state-of-the art regarding the role of the above pathways in schizophrenia. Accumulating data suggest a powerful role for prenatal infection, both viral and microbial, in driving an early developmental etiology to schizophrenia. Models of prenatal rodent infection show maintained activation of immuno-inflammatory pathways coupled to increased microglia activation. The ensuing activation of immuno-inflammatory pathways in schizophrenia may activate the TRYCAT pathway, including increased kynurenic acid (KA) and neurotoxic TRYCATs. Increased KA, via the inhibition of the α7 nicotinic acetylcholine receptor, lowers gamma-amino-butyric-acid (GABA)ergic post-synaptic current, contributing to dysregulated glutamatergic activity. Hypofunctioning of the NMDAr on GABAergic interneurons will contribute to glutamatergic dysregulation. Many susceptibility genes for schizophrenia are predominantly expressed in early development and will interact with these early developmental driven changes in the immuno-inflammatory and TRYCAT pathways. Maternal infection and subsequent immuno-inflammatory responses are additionally associated with O&NS, including lowered antioxidants such as glutathione. This will contribute to alterations in neurogenesis and myelination. In such a scenario a) a genetic or epigenetic potentiation of immuno-inflammatory pathways may constitute a double hit on their own, stimulating wider immuno-inflammatory responses and thus potentiating the TRYCAT pathway and subsequent NMDAr dysfunction and neuroprogression; and b) antipsychotic-induced changes in immuno-inflammatory, TRYCAT and O&NS pathways would modulate the CNS glia-neuronal interactions that determine synaptic plasticity as well as myelin generation and maintenance.
Collapse
|
23
|
Fanning RA, McMorrow JP, Campion DP, Carey MF, O'Connor JJ. Opioid mediated activity and expression of mu and delta opioid receptors in isolated human term non-labouring myometrium. Eur J Pharmacol 2013; 698:170-7. [DOI: 10.1016/j.ejphar.2012.09.045] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2012] [Revised: 09/21/2012] [Accepted: 09/21/2012] [Indexed: 12/25/2022]
|
24
|
ISHIBASHI M, AKIYOSHI H, ISERI T, OHASHI F. Skin Conductance Reflects Drug-Induced Changes in Blood Levels of Cortisol, Adrenaline and Noradrenaline in Dogs. J Vet Med Sci 2013; 75:809-13. [DOI: 10.1292/jvms.12-0478] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Affiliation(s)
- Maki ISHIBASHI
- Department of Veterinary Clinical Medicine, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1–58 Rinku-ohrai-kita, Izumisano, Osaka 598–8531, Japan
| | - Hideo AKIYOSHI
- Department of Veterinary Clinical Medicine, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1–58 Rinku-ohrai-kita, Izumisano, Osaka 598–8531, Japan
| | - Toshie ISERI
- Department of Veterinary Clinical Medicine, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1–58 Rinku-ohrai-kita, Izumisano, Osaka 598–8531, Japan
| | - Fumihito OHASHI
- Department of Veterinary Clinical Medicine, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1–58 Rinku-ohrai-kita, Izumisano, Osaka 598–8531, Japan
| |
Collapse
|
25
|
Effets du stress prénatal sur le fœtus et les données périnatales : une revue critique de la littérature. EVOLUTION PSYCHIATRIQUE 2012. [DOI: 10.1016/j.evopsy.2012.01.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
26
|
Sirzen-Zelenskaya A, Gonzalez-Iglesias AE, de Monvel JB, Bertram R, Freeman ME, Gerber U, Egli M. Prolactin induces a hyperpolarising current in rat paraventricular oxytocinergic neurones. J Neuroendocrinol 2011; 23:883-93. [PMID: 21851427 PMCID: PMC3235712 DOI: 10.1111/j.1365-2826.2011.02207.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Prolactin and oxytocin are important reproductive hormones implicated in several common adaptive functions during pregnancy, pseudopregnancy and lactation. Recently, extracellular recordings of supraoptic neurones have shown that prolactin may modulate the electrical activity of oxytocinergic neurones. However, no study has been conducted aiming to establish whether prolactin directly influences this activity in oxytocinergic paraventricular neurones. In the present study, we addressed this question by studying the effects of prolactin on the electrical activity and voltage-current relationship of identified paraventricular neurones in rat brain slices. Whole-cell recordings were obtained and neurones were classified on the basis of their morphological and electrophysiological fingerprint (i.e. magnocellular or parvicellular) and neuropeptide phenotype (i.e. oxytocinergic or non-oxytocinergic). We report that prolactin elicited a hyperpolarising current in 37% of the neurones in this nucleus, of which the majority (67%) were identified as putative magnocellular oxytocin neurones and the reminder (33%) were regarded as oxytocin-negative, parvicellular neuroendocrine neurones. Our results suggest that, in addition to the well-established negative feedback loop between prolactin-secreting lactotrophs and dopaminergic neurones in the arcuate nucleus, an inhibitory feedback loop also exists between lactotrophs and oxytocinergic paraventricular neurones.
Collapse
Affiliation(s)
| | | | | | - Richard Bertram
- Department of Mathematics and Programs in Neuroscience and Molecular Biophysics, Florida State University, Tallahassee, FL
| | - Marc E. Freeman
- Department of Biological Science, Program in Neuroscience, Florida State University, Tallahassee, FL
| | - Urs Gerber
- Brain Research Institute, University of Zurich, Zurich, Switzerland
| | - Marcel Egli
- Space Biology Group, ETH Zurich, Switzerland
| |
Collapse
|
27
|
Chistyakova NV, Savost’yanov KV. The hypothalamic-pituitary-adrenal axis and genetic variants affecting its reactivity. RUSS J GENET+ 2011. [DOI: 10.1134/s1022795411080035] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
28
|
Anxiety and hypothalamic-pituitary-adrenal axis responses to psychological stress are attenuated in male rats made lean by large litter rearing. Psychoneuroendocrinology 2011; 36:1080-91. [PMID: 21349647 DOI: 10.1016/j.psyneuen.2011.01.006] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2010] [Revised: 01/12/2011] [Accepted: 01/28/2011] [Indexed: 11/21/2022]
Abstract
An excellent strategy to treat overactive responses to stress is to exploit the body's inherent stress-inhibitory mechanisms. Stress responses are known to differ between individuals depending upon their level and distribution of adiposity and their experiences in early life. For instance, we have recently shown that female rats made obese by overfeeding during the neonatal period have exacerbated responses to psychological stress. The converse may be true for those that are underfed during this period. In this investigation we hypothesized that rats made lean by neonatal underfeeding would have reduced anxiety and attenuated hypothalamic-pituitary-adrenal (HPA) axis responses to psychological stress. Our findings show that male (but not female) rats, made smaller by being suckled in a large litter, show reduced anxiety-related behaviour compared with those from normal litters when tested in the elevated plus maze. These smaller males also have attenuated activation of the paraventricular nucleus of the hypothalamus in response to the psychological stress, restraint, and corticosterone responses to restraint that return more quickly to baseline than controls. These findings are exciting from the perspective of understanding and potentially exploiting the body's inherent stress-inhibitory mechanisms to treat overactive responses to stress. They also provide an indication that being lean may be able to ameliorate overactive stress responses. Understanding the mechanisms by which these stress responses are attenuated in lean animals will be important for future strategies to treat diseases associated with overactive HPA axes in humans.
Collapse
|
29
|
Douglas AJ. Mother-offspring dialogue in early pregnancy: impact of adverse environment on pregnancy maintenance and neurobiology. Prog Neuropsychopharmacol Biol Psychiatry 2011; 35:1167-77. [PMID: 20688125 DOI: 10.1016/j.pnpbp.2010.07.024] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2010] [Revised: 07/21/2010] [Accepted: 07/25/2010] [Indexed: 12/11/2022]
Abstract
The mother-offspring dialogue begins even before implantation and is essential to signal pregnancy, establish robust contact, and maintain embryo growth and development. Any circumstance that disrupts the dialogue risks pregnancy problems. A new look at how stress impacts on pregnancy involves its adverse effects on the key pregnancy hormones of progesterone and prolactin. These effects have far-reaching consequences on pregnancy maintenance, maternal anxiety and embryo programming. This review focuses on early pregnancy and how stress might compromise the multi-layer, two-way communication between mother and embryo.
Collapse
Affiliation(s)
- Alison J Douglas
- Laboratory of Neuroendocrinology, Centre for Integrative Physiology, University of Edinburgh, United Kingdom.
| |
Collapse
|
30
|
Alexander BN, Fewell JE. Metyrapone restores the febrile response to Escherichia coli LPS in pregnant rats. Am J Physiol Regul Integr Comp Physiol 2011; 300:R1588-95. [PMID: 21490363 DOI: 10.1152/ajpregu.00785.2010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Fever, an important component of the host's defense response to immune challenge, is absent or attenuated in rats near the term of pregnancy. The present experiments were carried out to determine the role of endogenous glucocorticoids in mediating the altered core temperature (Tc) response to exogenous pyrogen (i.e., Escherichia coli LPS). For the experiments, metyrapone-a glucocorticoid synthesis inhibitor-was administered to near-term pregnant rats prior to an EC(100) dose of E. coli LPS. Administration of LPS following vehicle elicited a significant corticosterone response and resulted in a decrease in Tc (i.e., hypothermia). Prior administration of metyrapone, however, which abolished the corticosterone response and altered the pyrogenic/cryogenic cytokine response to LPS, eliminated hypothermia and restored the febrile response. Our results provide evidence that endogenous glucocorticoids play a role in mediating the altered febrile response to immune stimuli observed in rats near the term of pregnancy.
Collapse
Affiliation(s)
- Brent N Alexander
- Alberta Children’s Hospital Research Institute for Child and Maternal Health, Department of Physiology and Pharmacology, University of Calgary, Health Sciences Centre, Canada
| | | |
Collapse
|
31
|
Frye CA, Paris JJ, Osborne DM, Campbell JC, Kippin TE. Prenatal Stress Alters Progestogens to Mediate Susceptibility to Sex-Typical, Stress-Sensitive Disorders, such as Drug Abuse: A Review. Front Psychiatry 2011; 2:52. [PMID: 22022315 PMCID: PMC3195272 DOI: 10.3389/fpsyt.2011.00052] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2011] [Accepted: 09/10/2011] [Indexed: 01/06/2023] Open
Abstract
Maternal-offspring interactions begin prior to birth. Experiences of the mother during gestation play a powerful role in determining the developmental programming of the central nervous system. In particular, stress during gestation alters developmental programming of the offspring resulting in susceptibility to sex-typical and stress-sensitive neurodevelopmental, neuropsychiatric, and neurodegenerative disorders. However, neither these effects, nor the underlying mechanisms, are well understood. Our hypothesis is that allopregnanolone, during gestation, plays a particularly vital role in mitigating effects of stress on the developing fetus and may mediate, in part, alterations apparent throughout the lifespan. Specifically, altered balance between glucocorticoids and progestogens during critical periods of development (stemming from psychological, immunological, and/or endocrinological stressors during gestation) may permanently influence behavior, brain morphology, and/or neuroendocrine-sensitive processes. 5α-reduced progestogens are integral in the developmental programming of sex-typical, stress-sensitive, and/or disorder-relevant phenotypes. Prenatal stress (PNS) may alter these responses and dysregulate allopregnanolone and its normative effects on stress axis function. As an example of a neurodevelopmental, neuropsychiatric, and/or neurodegenerative process, this review focuses on responsiveness to drugs of abuse, which is sensitive to PNS and progestogen milieu. This review explores the notion that allopregnanolone may effect, or be influenced by, PNS, with consequences for neurodevelopmental-, neuropsychiatric-, and/or neurodegenerative- relevant processes, such as addiction.
Collapse
Affiliation(s)
- Cheryl A Frye
- Department of Psychology, University at Albany-State University of New York Albany, NY, USA
| | | | | | | | | |
Collapse
|
32
|
Brunton PJ, Russell JA. Allopregnanolone and suppressed hypothalamo-pituitary-adrenal axis stress responses in late pregnancy in the rat. Stress 2011; 14:6-12. [PMID: 20666638 DOI: 10.3109/10253890.2010.482628] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
In rats, late pregnancy is associated with suppressed hypothalamo-pituitary-adrenal (HPA) axis responses to a variety of stressful stimuli. The result is reduced corticosterone secretion following stress, which is considered to give some protection to the fetuses from adverse glucocorticoid programming and limits the catabolic effect of corticosterone, hence minimizing maternal energy expenditure. We have used a model of immune challenge in which systemic administration of the cytokine, interleukin-1β (IL-1β), allows study of the mechanisms underlying HPA axis hyporesponsiveness in late pregnancy. Suppressed responsiveness of parvocellular paraventricular nucleus (pPVN) corticotropin-releasing hormone neurons, and hence the HPA axis, following IL-1β in late pregnancy is evidently explained by presynaptic inhibition of noradrenaline release in the pPVN, owing to increased endogenous opioid peptide enkephalin production in brainstem nucleus tractus solitarii neurons. Allopregnanolone, a neurosteroid metabolite of progesterone, signals the pregnancy status of the animal to the brain and stimulates opioid production in the brainstem. In this review, we discuss the supporting evidence for these mechanisms.
Collapse
Affiliation(s)
- Paula J Brunton
- Laboratory of Neuroendocrinology, Centre for Integrative Physiology, University of Edinburgh, Hugh Robson Building, George Square, Edinburgh, EH8 9XD, UK.
| | | |
Collapse
|
33
|
Paris JJ, Frye CA. Juvenile offspring of rats exposed to restraint stress in late gestation have impaired cognitive performance and dysregulated progestogen formation. Stress 2011; 14:23-32. [PMID: 21034292 PMCID: PMC3103059 DOI: 10.3109/10253890.2010.512375] [Citation(s) in RCA: 36] [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] [Indexed: 01/16/2023] Open
Abstract
Gestational stress may have lasting effects on the physical and neurocognitive development of offspring. The mechanisms that may underlie these effects are of interest. Progesterone and its 5α-reduced metabolites, dihydroprogesterone and 5α-pregnan-3α-ol-20-one (3α,5α-THP), maintain pregnancy, have neurotrophic effects, and can enhance cognitive performance. We hypothesized that some of the deleterious effects of gestational stress on the cognitive performance of offspring may be related to progestogen formation. Pregnant rat dams were exposed to restraint under a bright light (thrice daily for 45 min) on gestational days 17-21 or were minimally handled controls. Dams that were exposed to restraint had lower circulating levels of 3α,5α-THP and significantly greater concentrations of corticosterone at the time of birth than did control dams. Male and female offspring, that were gestationally stressed or not, were cross-fostered to non-manipulated dams. Between postnatal days 28-30, offspring were assessed for object recognition, a prefrontal cortex (PFC)-dependent cognitive task. Restraint-exposed offspring performed more poorly in the object recognition task than did control offspring, irrespective of sex. As well, progesterone turnover to its 5α-reduced metabolites in the medial PFC (but not the diencephalon) was significantly reduced among restraint-exposed, compared to control, offspring. Progesterone turnover, and levels of 3α,5α-THP, positively correlated with performance in the object recognition task. Thus, restraint stress in late pregnancy impaired cognitive development and dysregulated progestogen formation in brain.
Collapse
Affiliation(s)
- Jason J Paris
- Department of Psychology, The University at Albany-SUNY, Albany, NY 12222, USA
| | | |
Collapse
|
34
|
Byrnes JJ, Babb JA, Scanlan VF, Byrnes EM. Adolescent opioid exposure in female rats: transgenerational effects on morphine analgesia and anxiety-like behavior in adult offspring. Behav Brain Res 2010; 218:200-5. [PMID: 21138744 DOI: 10.1016/j.bbr.2010.11.059] [Citation(s) in RCA: 79] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2010] [Revised: 11/08/2010] [Accepted: 11/29/2010] [Indexed: 10/18/2022]
Abstract
The use of narcotics by adolescent females is a growing problem, yet very little is known about the long-term consequences for either the user or her future offspring. In the current study, we utilized an animal model to examine the transgenerational consequences of opiate exposure occurring during this sensitive period. Female rats were exposed to increasing doses of morphine or its saline vehicle twice daily during adolescent development (postnatal days 30-40), after which they remained drug free. At 60 days of age, all females were mated and their adult offspring were tested for anxiety-like behavior and sensitivity to morphine. Specifically, offspring of adolescent morphine (MOR-F1)- or saline (SAL-F1)-exposed mothers were tested for acute locomotor responses in an open field, followed by testing of acute or chronic morphine analgesia on the hot plate. Open field testing indicated alterations in anxiety-like behavior in MOR-F1 female offspring, with effects dependent upon the stage of the estrus cycle. Hot plate testing revealed sex differences in baseline pain threshold and morphine sensitivity in all offspring, regardless of maternal exposure. However, when compared to their SAL-F1 counterparts, MOR-F1 male offspring demonstrated significantly increased sensitivity to the analgesic effects of acute morphine, and developed analgesic tolerance more rapidly following chronic morphine treatment. The findings indicate that prior opiate exposure during early adolescence in females produces sex-specific alterations of both emotionality and morphine sensitivity in their progeny.
Collapse
Affiliation(s)
- John J Byrnes
- Department of Biomedical Sciences, Section of Reproduction and Neuroscience, Tufts University, Cummings School of Veterinary Medicine, 200 Westboro Rd., North Grafton, MA 01536, United States
| | | | | | | |
Collapse
|
35
|
Rinaman L. Hindbrain noradrenergic A2 neurons: diverse roles in autonomic, endocrine, cognitive, and behavioral functions. Am J Physiol Regul Integr Comp Physiol 2010; 300:R222-35. [PMID: 20962208 DOI: 10.1152/ajpregu.00556.2010] [Citation(s) in RCA: 157] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Central noradrenergic (NA) signaling is broadly implicated in behavioral and physiological processes related to attention, arousal, motivation, learning and memory, and homeostasis. This review focuses on the A2 cell group of NA neurons, located within the hindbrain dorsal vagal complex (DVC). The intra-DVC location of A2 neurons supports their role in vagal sensory-motor reflex arcs and visceral motor outflow. A2 neurons also are reciprocally connected with multiple brain stem, hypothalamic, and limbic forebrain regions. The extra-DVC connections of A2 neurons provide a route through which emotional and cognitive events can modulate visceral motor outflow and also a route through which interoceptive feedback from the body can impact hypothalamic functions as well as emotional and cognitive processing. This review considers some of the hallmark anatomical and chemical features of A2 neurons, followed by presentation of evidence supporting a role for A2 neurons in modulating food intake, affective behavior, behavioral and physiological stress responses, emotional learning, and drug dependence. Increased knowledge about the organization and function of the A2 cell group and the neural circuits in which A2 neurons participate should contribute to a better understanding of how the brain orchestrates adaptive responses to the various threats and opportunities of life and should further reveal the central underpinnings of stress-related physiological and emotional dysregulation.
Collapse
Affiliation(s)
- Linda Rinaman
- Dept. of Neuroscience, University of Pittsburgh, A210 Langley Hall, Pittsburgh, PA 15260, USA.
| |
Collapse
|
36
|
Brooks VL, Dampney RAL, Heesch CM. Pregnancy and the endocrine regulation of the baroreceptor reflex. Am J Physiol Regul Integr Comp Physiol 2010; 299:R439-51. [PMID: 20504907 PMCID: PMC2928618 DOI: 10.1152/ajpregu.00059.2010] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2010] [Accepted: 05/19/2010] [Indexed: 02/07/2023]
Abstract
The purpose of this review is to delineate the general features of endocrine regulation of the baroreceptor reflex, as well as specific contributions during pregnancy. In contrast to the programmed changes in baroreflex function that occur in situations initiated by central command (e.g., exercise or stress), the complex endocrine milieu often associated with physiological and pathophysiological states can influence the central baroreflex neuronal circuitry via multiple sites and mechanisms, thereby producing varied changes in baroreflex function. During pregnancy, baroreflex gain is markedly attenuated, and at least two hormonal mechanisms contribute, each at different brain sites: increased levels of the neurosteroid 3alpha-hydroxy-dihydroprogesterone (3alpha-OH-DHP), acting in the rostral ventrolateral medulla (RVLM), and reduced actions of insulin in the forebrain. 3alpha-OH-DHP appears to potentiate baroreflex-independent GABAergic inhibition of premotor neurons in the RVLM, which decreases the range of sympathetic nerve activity that can be elicited by changes in arterial pressure. In contrast, reductions in the levels or actions of insulin in the brain blunt baroreflex efferent responses to increments or decrements in arterial pressure. Although plasma levels of angiotensin II are increased in pregnancy, this is not responsible for the reduction in baroreflex gain, although it may contribute to the increased level of sympathetic nerve activity in this condition. How these different hormonal effects are integrated within the brain, as well as possible interactions with additional potential neuromodulators that influence baroreflex function during pregnancy and other physiological and pathophysiological states, remains to be clearly delineated.
Collapse
Affiliation(s)
- Virginia L Brooks
- Dept. of Physiology and Pharmacology, L-334, Oregon Health & Science Univ., 3181 SW Sam Jackson Park Road, Portland, OR 97239, USA.
| | | | | |
Collapse
|
37
|
Solomon MB, Herman JP. Sex differences in psychopathology: of gonads, adrenals and mental illness. Physiol Behav 2009; 97:250-8. [PMID: 19275906 DOI: 10.1016/j.physbeh.2009.02.033] [Citation(s) in RCA: 196] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2009] [Revised: 02/10/2009] [Accepted: 02/20/2009] [Indexed: 10/21/2022]
Abstract
Stress-related disorders such as anxiety and depression are disproportionately prevalent in women. Women are more likely to experience depression and anxiety disorders during periods of marked hormonal fluctuations, suggesting that gonadal hormones are involved in stress pathology. Depression and anxiety are both associated with aberrant secretion of glucocorticoids, which also show marked fluctuations across the reproductive cycle and in response to gonadal steroids. Thus, interactions between gonadal and stress hormones may play a major role in predisposing females to stress-related disease. The purpose of this brief review is to highlight preclinical data regarding the role of estrogens in depression and anxiety-like behaviors. While it is evident the exogenous estrogens modulate affective behavior in rodents, there is some disagreement in the literature, perhaps related to experimental designs that vary with respect to administration parameters and stress. Beneficial effects of estrogens on mood are most likely due to estrogen receptor (ER)beta signaling. The antidepressant and anxiolytic effects of ERbeta are consistent with its role in attenuating glucocorticoid responses to stress, suggesting that estrogens, acting at ERbeta, may improve mood by suppressing glucocorticoid hyperactivity. However, additional studies demonstrate that ERbeta signaling in the hippocampus is sufficient to induce antidepressant and anxiolytic behaviors. Thus, ERbeta may improve mood via primary actions on hypothalamic (i.e., paraventricular nucleus) and/or extra-hypothalamic sites. Overall, the preclinical research suggests that selective ER modulators targeting ERbeta may be an attractive alternative or adjunct treatment to currently prescribed antidepressants or anxiolytics.
Collapse
Affiliation(s)
- Matia B Solomon
- Department of Psychiatry, University of Cincinnati, Genome, Research Institute, Reading, OH 45237, USA.
| | | |
Collapse
|
38
|
Abstract
The neuroendocrine control of prolactin secretion is unlike that of any other pituitary hormone. It is predominantly inhibited by the hypothalamus and, in the absence of a regulatory feedback hormone, it acts directly in the brain to suppress its own secretion. In addition to this short-loop feedback action in the brain, prolactin has been reported to influence a wide range of other brain functions. There have been few attempts to rationalise why a single hormone might exert such a range of distinct and seemingly unrelated neuroendocrine functions. In this review, we highlight some of the original studies that first characterised the unusual features of prolactin neuroendocrinology, and then attempt to identify areas of new progress and/or controversy. Finally, we discuss a hypothesis that provides a unifying explanation for the pleiotrophic actions of prolactin in the brain.
Collapse
Affiliation(s)
- D R Grattan
- Centre for Neuroendocrinology and Department of Anatomy and Structural Biology, University of Otago, Dunedin, New Zealand.
| | | |
Collapse
|
39
|
Brunton PJ, Russell JA, Douglas AJ. Adaptive responses of the maternal hypothalamic-pituitary-adrenal axis during pregnancy and lactation. J Neuroendocrinol 2008; 20:764-76. [PMID: 18601699 DOI: 10.1111/j.1365-2826.2008.01735.x] [Citation(s) in RCA: 207] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Over the past 40 years, it has been recognised that the maternal hypothalamic-pituitary-adrenal (HPA) axis undergoes adaptations through pregnancy and lactation that might contribute to avoidance of adverse effects of stress on the mother and offspring. The extent of the global adaptations in the HPA axis has been revealed and the underlying mechanisms investigated within the last 20 years. Both basal, including the circadian rhythm, and stress-induced adrenocorticotrophic hormone and glucocorticoid secretory patterns are altered. Throughout most of pregnancy, and in lactation, these changes predominantly reflect reduced drive by the corticotropin-releasing factor (CRF) neurones in the parvocellular paraventricular nucleus (pPVN). An accompanying profound attenuation of HPA axis responses to a wide variety of psychological and physical stressors emerges after mid-pregnancy and persists until the end of lactation. Central to this suppression of stress responsiveness is reduced activation of the pPVN CRF neurones. This is consequent on the reduced effectiveness of the stimulation of brainstem afferents to these CRF neurones (for physical stressors) and of altered processing by limbic structures (for emotional stressors). The mechanism of reduced CRF neurone responses to physical stressors in pregnancy is the suppression of noradrenaline release in the PVN by an up-regulated endogenous opioid mechanism, which is induced by neuroactive steroid produced from progesterone. By contrast, in lactation suckling the young provides a neural stimulus that dampens the HPA axis circadian rhythm and reduces stress responses. Reduced noradrenergic input activity is involved in reduced stress responses in lactation, although central prolactin action also appears important. Such adaptations limit the adverse effects of excess glucocorticoid exposure on the foetus(es) and facilitate appropriate metabolic and immune responses.
Collapse
Affiliation(s)
- P J Brunton
- Laboratory of Neuroendocrinology, Centre for Integrative Physiology, Hugh Robson Building, University of Edinburgh, Edinburgh, UK
| | | | | |
Collapse
|
40
|
Paris JJ, Frye CA. Estrous cycle, pregnancy, and parity enhance performance of rats in object recognition or object placement tasks. Reproduction 2008; 136:105-15. [PMID: 18390689 DOI: 10.1530/rep-07-0512] [Citation(s) in RCA: 93] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Ovarian hormone elevations are associated with enhanced learning/memory. During behavioral estrus or pregnancy, progestins, such as progesterone (P(4)) and its metabolite 5 alpha-pregnan-3 alpha-ol-20-one (3 alpha,5 alpha-THP), are elevated due, in part, to corpora luteal and placental secretion. During 'pseudopregnancy', the induction of corpora luteal functioning results in a hormonal milieu analogous to pregnancy, which ceases after about 12 days, due to the lack of placental formation. Multiparity is also associated with enhanced learning/memory, perhaps due to prior steroid exposure during pregnancy. Given evidence that progestins and/or parity may influence cognition, we investigated how natural alterations in the progestin milieu influence cognitive performance. In Experiment 1, virgin rats (nulliparous) or rats with two prior pregnancies (multiparous) were assessed on the object placement and recognition tasks, when in high-estrogen/P(4) (behavioral estrus) or low-estrogen/P(4) (diestrus) phases of the estrous cycle. In Experiment 2, primiparous or multiparous rats were tested in the object placement and recognition tasks when not pregnant, pseudopregnant, or pregnant (between gestational days (GDs) 6 and 12). In Experiment 3, pregnant primiparous or multiparous rats were assessed daily in the object placement or recognition tasks. Females in natural states associated with higher endogenous progestins (behavioral estrus, pregnancy, multiparity) outperformed rats in low progestin states (diestrus, non-pregnancy, nulliparity) on the object placement and recognition tasks. In earlier pregnancy, multiparous, compared with primiparous, rats had a lower corticosterone, but higher estrogen levels, concomitant with better object placement performance. From GD 13 until post partum, primiparous rats had higher 3 alpha,5 alpha-THP levels and improved object placement performance compared with multiparous rats.
Collapse
Affiliation(s)
- Jason J Paris
- The University at Albany, SUNY, 1400 Washington Avenue, Albany, New York 12222, USA
| | | |
Collapse
|
41
|
Mouihate A, Harré EM, Martin S, Pittman QJ. Suppression of the febrile response in late gestation: evidence, mechanisms and outcomes. J Neuroendocrinol 2008; 20:508-14. [PMID: 18266941 PMCID: PMC3547979 DOI: 10.1111/j.1365-2826.2008.01666.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Fever is a beneficial host defence response. However, fever caused by the immune stimulant, lipopolysaccharide (LPS), are attenuated in many species during pregnancy, particularly near term. A number of parallel mechanisms may be responsible, and these vary in magnitude according to the time of gestation, type of inflammatory stimulus and species of animal. Some studies report a reduction in the plasma levels of circulating pro-inflammatory cytokines such as tumour necrosis factor-alpha, interleukin-1beta and interleukin-6 along with increased levels of anti-inflammatory cytokines such as interleukin-1 receptor antagonist. Associated with the attenuated febrile response to LPS is a reduction in the activation of the prostaglandin synthesising enzyme, cyclo-oxygenase 2, resulting in reduced levels of the obligatory prostaglandin mediators of the febrile response in the brain. There is also a reduction in the sensitivity of the brain to the pyrogenic action of prostaglandins, which does not appear to be due to a change in the levels of hypothalamic EP3 prostaglandin receptors. The suppression of fever at term may be important for the health of the neonate because fever in pregnant mothers may be harmful to the late-term foetus and neonate.
Collapse
Affiliation(s)
- A Mouihate
- Department of Physiology and Biophysics, Hotchkiss Brain Institute, Institutes of Infection, Immunity and Inflammation and Maternal and Child Health, University of Calgary, Calgary, Alberta, Canada
| | | | | | | |
Collapse
|
42
|
Pittman QJ. Brain adaptations for a successful pregnancy. J Physiol 2008; 586:367. [PMID: 18192615 DOI: 10.1113/jphysiol.2007.149013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
|