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Tartour AI, Chivese T, Eltayeb S, Elamin FM, Fthenou E, Seed Ahmed M, Babu GR. Prenatal psychological distress and 11β-HSD2 gene expression in human placentas: Systematic review and meta-analysis. Psychoneuroendocrinology 2024; 166:107060. [PMID: 38677195 DOI: 10.1016/j.psyneuen.2024.107060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Revised: 03/10/2024] [Accepted: 04/18/2024] [Indexed: 04/29/2024]
Abstract
BACKGROUND The placenta acts as a buffer to regulate the degree of fetal exposure to maternal cortisol through the 11-Beta Hydroxysteroid Dehydrogenase isoenzyme type 2 (11-β HSD2) enzyme. We conducted a systematic review and meta-analysis to assess the effect of prenatal psychological distress (PPD) on placental 11-β HSD2 gene expression and explore the related mechanistic pathways involved in fetal neurodevelopment. METHODS We searched PubMed, Embase, Scopus, APA PsycInfo®, and ProQuest Dissertations for observational studies assessing the association between PPD and 11-β HSD2 expression in human placentas. Adjusted regression coefficients (β) and corresponding 95% confidence intervals (CIs) were pooled based on three contextual PPD exposure groups: prenatal depression, anxiety symptoms, and perceived stress. RESULTS Of 3159 retrieved records, sixteen longitudinal studies involving 1869 participants across seven countries were included. Overall, exposure to PPD disorders showed weak negative associations with the placental 11-β HSD2 gene expression as follows: prenatal depression (β -0.01, 95% CI 0.05-0.02, I2=0%), anxiety symptoms (β -0.02, 95% CI 0.06-0.01, I2=0%), and perceived stress (β -0.01 95% CI 0.06-0.04, I2=62.8%). Third-trimester PPD exposure was more frequently associated with lower placental 11-β HSD2 levels. PPD and placental 11-β HSD2 were associated with changes in cortisol reactivity and the development of adverse health outcomes in mothers and children. Female-offspring were more vulnerable to PPD exposures. CONCLUSION The study presents evidence of a modest role of prenatal psychological distress in regulating placental 11-β HSD2 gene expression. Future prospective cohorts utilizing larger sample sizes or advanced statistical methods to enhance the detection of small effect sizes should be planned. Additionally, controlling for key predictors such as the mother's ethnicity, trimester of PPD exposure, mode of delivery, and infant sex is crucial for valid exploration of PPD effects on fetal programming.
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Affiliation(s)
- Angham Ibrahim Tartour
- Department of Population Medicine, College of Medicine, QU Health, Qatar University, P. O. Box:2713, Doha, Qatar.
| | - Tawanda Chivese
- Department of Population Medicine, College of Medicine, QU Health, Qatar University, P. O. Box:2713, Doha, Qatar
| | - Safa Eltayeb
- Qatar Biobank for Medical Research, Qatar Foundation, Doha, Qatar
| | - Fatima M Elamin
- Office of Research Ethics and Integrity, Qatar University, P. O. Box:2713, Doha, Qatar
| | - Eleni Fthenou
- Qatar Biobank for Medical Research, Qatar Foundation, Doha, Qatar
| | - Mohammed Seed Ahmed
- Department of Basic Medical Sciences, College of Medicine, QU Health, Qatar University, P. O. Box:2713, Doha, Qatar
| | - Giridhara Rathnaiah Babu
- Department of Population Medicine, College of Medicine, QU Health, Qatar University, P. O. Box:2713, Doha, Qatar
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Suleri A, Gaiser C, Cecil CAM, Dijkzeul A, Neumann A, Labrecque JA, White T, Bergink V, Muetzel RL. Examining longitudinal associations between prenatal exposure to infections and child brain morphology. Brain Behav Immun 2024; 119:965-977. [PMID: 38750701 DOI: 10.1016/j.bbi.2024.05.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 05/01/2024] [Accepted: 05/12/2024] [Indexed: 05/21/2024] Open
Abstract
BACKGROUND Maternal infection during pregnancy has been identified as a prenatal risk factor for the later development of psychopathology in exposed offspring. Neuroimaging data collected during childhood has suggested a link between prenatal exposure to maternal infection and child brain structure and function, potentially offering a neurobiological explanation for the emergence of psychopathology. Additionally, preclinical studies utilizing repeated measures of neuroimaging data suggest that effects of prenatal maternal infection on the offspring's brain may normalize over time (i.e., catch-up growth). However, it remains unclear whether exposure to prenatal maternal infection in humans is related to long-term differential neurodevelopmental trajectories. Hence, this study aimed to investigate the association between prenatal exposure to infections on child brain development over time using repeated measures MRI data. METHODS We leveraged data from a population-based cohort, Generation R, in which we examined prospectively assessed self-reported infections at each trimester of pregnancy (N = 2,155). We further used three neuroimaging assessments (at mean ages 8, 10 and 14) to obtain cortical and subcortical measures of the offspring's brain morphology with MRI. Hereafter, we applied linear mixed-effects models, adjusting for several confounding factors, to estimate the association of prenatal maternal infection with child brain development over time. RESULTS We found that prenatal exposure to infection in the third trimester was associated with a slower decrease in volumes of the pars orbitalis, rostral anterior cingulate and superior frontal gyrus, and a faster increase in the middle temporal gyrus. In the temporal pole we observed a divergent pattern, specifically showing an increase in volume in offspring exposed to more infections compared to a decrease in volume in offspring exposed to fewer infections. We further observed associations in other frontal and temporal lobe structures after exposure to infections in any trimester, though these did not survive multiple testing correction. CONCLUSIONS Our results suggest that prenatal exposure to infections in the third trimester may be associated with slower age-related growth in the regions: pars orbitalis, rostral anterior cingulate and superior frontal gyrus, and faster age-related growth in the middle temporal gyrus across childhood, suggesting a potential sensitive period. Our results might be interpreted as an extension of longitudinal findings from preclinical studies, indicating that children exposed to prenatal infections could exhibit catch-up growth. However, given the lack of differences in brain volume between various infection groups at baseline, there may instead be either a longitudinal deviation or a subtle temporal deviation. Subsequent well-powered studies that extend into the period of full brain development (∼25 years) are needed to confirm whether the observed phenomenon is indeed catch-up growth, a longitudinal deviation, or a subtle temporal deviation.
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Affiliation(s)
- Anna Suleri
- Department of Child and Adolescent Psychiatry/Psychology, Erasmus University Medical Center, the Netherlands; The Generation R Study Group, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Carolin Gaiser
- Department of Child and Adolescent Psychiatry/Psychology, Erasmus University Medical Center, the Netherlands; The Generation R Study Group, Erasmus University Medical Center, Rotterdam, the Netherlands; Department of Neuroscience, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Charlotte A M Cecil
- Department of Child and Adolescent Psychiatry/Psychology, Erasmus University Medical Center, the Netherlands; Department of Epidemiology, Erasmus University Medical Center, Rotterdam, the Netherlands; Department of Biomedical Data Sciences, Molecular Epidemiology, Leiden University Medical Center, Leiden, the Netherlands
| | - Annet Dijkzeul
- Department of Child and Adolescent Psychiatry/Psychology, Erasmus University Medical Center, the Netherlands; The Generation R Study Group, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Alexander Neumann
- Department of Child and Adolescent Psychiatry/Psychology, Erasmus University Medical Center, the Netherlands; The Generation R Study Group, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Jeremy A Labrecque
- Department of Epidemiology, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Tonya White
- Section on Social and Cognitive Developmental Neuroscience, National Institute of Mental Health, Bethesda, MD, USA
| | - Veerle Bergink
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, NY, USA; Department of Psychiatry, Erasmus University Medical Center, Rotterdam, the Netherlands.
| | - Ryan L Muetzel
- Department of Child and Adolescent Psychiatry/Psychology, Erasmus University Medical Center, the Netherlands; Department of Radiology and Nuclear Medicine, Erasmus University Medical Center, Rotterdam, the Netherlands
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Black T, Jenkins BW, Laprairie RB, Howland JG. Therapeutic potential of gamma entrainment using sensory stimulation for cognitive symptoms associated with schizophrenia. Neurosci Biobehav Rev 2024; 161:105681. [PMID: 38641090 DOI: 10.1016/j.neubiorev.2024.105681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Revised: 03/27/2024] [Accepted: 04/16/2024] [Indexed: 04/21/2024]
Abstract
Schizophrenia is a complex neuropsychiatric disorder with significant morbidity. Treatment options that address the spectrum of symptoms are limited, highlighting the need for innovative therapeutic approaches. Gamma Entrainment Using Sensory Stimulation (GENUS) is an emerging treatment for neuropsychiatric disorders that uses sensory stimulation to entrain impaired oscillatory network activity and restore brain function. Aberrant oscillatory activity often underlies the symptoms experienced by patients with schizophrenia. We propose that GENUS has therapeutic potential for schizophrenia. This paper reviews the current status of schizophrenia treatment and explores the use of sensory stimulation as an adjunctive treatment, specifically through gamma entrainment. Impaired gamma frequency entrainment is observed in patients, particularly in response to auditory and visual stimuli. Thus, sensory stimulation, such as music listening, may have therapeutic potential for individuals with schizophrenia. GENUS holds novel therapeutic potential to improve the lives of individuals with schizophrenia, but further research is required to determine the efficacy of GENUS, optimize its delivery and therapeutic window, and develop strategies for its implementation in specific patient populations.
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Affiliation(s)
- Tallan Black
- College of Pharmacy and Nutrition, University of Saskatchewan, Saskatoon, SK, Canada.
| | - Bryan W Jenkins
- Division of Behavioral Biology, Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Robert B Laprairie
- College of Pharmacy and Nutrition, University of Saskatchewan, Saskatoon, SK, Canada; Department of Pharmacology, College of Medicine, Dalhousie University, Halifax, NS, Canada
| | - John G Howland
- Department of Anatomy, Physiology, and Pharmacology, College of Medicine, University of Saskatchewan, Saskatoon, SK, Canada
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Sheng JA, Tobet SA. Maternal immune activation with toll-like receptor 7 agonist during mid-gestation alters juvenile and adult developmental milestones and behavior. J Neuroendocrinol 2024:e13417. [PMID: 38822791 DOI: 10.1111/jne.13417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 05/07/2024] [Accepted: 05/15/2024] [Indexed: 06/03/2024]
Abstract
Infections during pregnancy are associated with increased risk for adult neuropsychiatric disease, such as major depressive disorder, schizophrenia, and autism spectrum disorder. In mouse models of maternal immune activation (MIA), different toll-like receptors (TLRs) are stimulated to initiate inflammatory responses in mother and fetus. The goal of this study was to determine sex-dependent aspects of MIA using a TLR7/8 agonist, Resiquimod (RQ), on neurodevelopment. RQ was administered to timed-pregnant mice on embryonic day (E) 12.5. At E15, maternal/fetal plasma cytokines were measured by enzyme-linked immunosorbent assay (ELISA). Maternal cytokines interleukin (IL)-6 and IL-10 were higher while tumor necrosis factor (TNF)-α and IL-17 were lower in pregnant dams exposed to RQ. Fetal cytokines (E15) were altered at the same timepoint with fetal plasma IL-6 and IL-17 greater after RQ compared to vehicle, while IL-10 and TNF-α were higher in male fetuses but not female. Other timed-pregnant dams were allowed to give birth. MIA with RQ did not alter the female to male ratio of offspring born per litter. Body weights were reduced significantly in both sexes at birth, and over the next 5 weeks. Offspring from RQ-injected mothers opened their eyes 5 days later than controls. Similarly, female offspring from RQ-injected mothers exhibited pubertal delay based on vaginal opening 2-3 days later than control females. On the behavioral side, juvenile and adult male and female MIA offspring exhibited less social-like behavior in a social interaction test. Anhedonia-like behavior was greater in MIA adult female mice. This study provides support for sex-dependent influences of fetal antecedents for altered brain development and behavioral outputs that could be indicative of increased susceptibility for adult disorders through immune mechanisms. Future studies are needed to determine neural cellular and molecular mechanisms for such programming effects.
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Affiliation(s)
- Julietta A Sheng
- Department of Biomedical Sciences, Colorado State University, Fort Collins, Colorado, USA
| | - Stuart A Tobet
- Department of Biomedical Sciences, Colorado State University, Fort Collins, Colorado, USA
- Department of Psychiatry, Mass General Hospital, Harvard Medical School, Boston, Massachusetts, USA
- School of Biomedical Engineering, Colorado State University, Fort Collins, Colorado, USA
- Innovation Center on Sex Differences in Medicine, Mass General Hospital, Boston, Massachusetts, USA
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Sakaguchi K, Tawata S. Giftedness and atypical sexual differentiation: enhanced perceptual functioning through estrogen deficiency instead of androgen excess. Front Endocrinol (Lausanne) 2024; 15:1343759. [PMID: 38752176 PMCID: PMC11094242 DOI: 10.3389/fendo.2024.1343759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Accepted: 04/15/2024] [Indexed: 05/18/2024] Open
Abstract
Syndromic autism spectrum conditions (ASC), such as Klinefelter syndrome, also manifest hypogonadism. Compared to the popular Extreme Male Brain theory, the Enhanced Perceptual Functioning model explains the connection between ASC, savant traits, and giftedness more seamlessly, and their co-emergence with atypical sexual differentiation. Overexcitability of primary sensory inputs generates a relative enhancement of local to global processing of stimuli, hindering the abstraction of communication signals, in contrast to the extraordinary local information processing skills in some individuals. Weaker inhibitory function through gamma-aminobutyric acid type A (GABAA) receptors and the atypicality of synapse formation lead to this difference, and the formation of unique neural circuits that process external information. Additionally, deficiency in monitoring inner sensory information leads to alexithymia (inability to distinguish one's own emotions), which can be caused by hypoactivity of estrogen and oxytocin in the interoceptive neural circuits, comprising the anterior insular and cingulate gyri. These areas are also part of the Salience Network, which switches between the Central Executive Network for external tasks and the Default Mode Network for self-referential mind wandering. Exploring the possibility that estrogen deficiency since early development interrupts GABA shift, causing sensory processing atypicality, it helps to evaluate the co-occurrence of ASC with attention deficit hyperactivity disorder, dyslexia, and schizophrenia based on phenotypic and physiological bases. It also provides clues for understanding the common underpinnings of these neurodevelopmental disorders and gifted populations.
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Affiliation(s)
- Kikue Sakaguchi
- Research Department, National Institution for Academic Degrees and Quality Enhancement of Higher Education (NIAD-QE), Kodaira-shi, Tokyo, Japan
| | - Shintaro Tawata
- Graduate School of Human Sciences, Sophia University, Chiyoda-ku, Tokyo, Japan
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Debs SR, Conn I, Navaneethan B, Penklis AG, Meyer U, Killcross S, Weickert CS, Purves-Tyson TD. Maternal immune activation and estrogen receptor modulation induce sex-specific dopamine-related behavioural and molecular alterations in adult rat offspring. Brain Behav Immun 2024; 118:236-251. [PMID: 38431238 DOI: 10.1016/j.bbi.2024.02.034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Revised: 02/08/2024] [Accepted: 02/27/2024] [Indexed: 03/05/2024] Open
Abstract
Dopamine dysregulation contributes to psychosis and cognitive deficits in schizophrenia that can be modelled in rodents by inducing maternal immune activation (MIA). The selective estrogen receptor (ER) modulator, raloxifene, can improve psychosis and cognition in men and women with schizophrenia. However, few studies have examined how raloxifene may exert its therapeutic effects in mammalian brain in both sexes during young adulthood (age relevant to most prevalent age at diagnosis). Here, we tested the extent to which raloxifene alters dopamine-related behaviours and brain transcripts in young adult rats, both control and MIA-exposed females and males. We found that raloxifene increased amphetamine (AMPH)-induced locomotor activity in female controls, and in contrast, raloxifene reduced AMPH-induced locomotor activity in male MIA offspring. We did not detect overt prepulse inhibition (PPI) deficits in female or male MIA offspring, yet raloxifene enhanced PPI in male MIA offspring. Whereas, raloxifene ameliorated increased startle responsivity in female MIA offspring. In the substantia nigra (SN), we found reduced Drd2s mRNA in raloxifene-treated female offspring with or without MIA, and increased Comt mRNA in placebo-treated male MIA offspring relative to placebo-treated controls. These data demonstrate an underlying dopamine dysregulation in MIA animals that can become more apparent with raloxifene treatment, and may involve selective alterations in dopamine receptor levels and dopamine breakdown processes in the SN. Our findings support sex-specific, differential behavioural responses to ER modulation in MIA compared to control offspring, with beneficial effects of raloxifene treatment on dopamine-related behaviours relevant to schizophrenia found in male MIA offspring only.
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Affiliation(s)
- Sophie R Debs
- Preclinical Neuropsychiatry Laboratory, Neuroscience Research Australia, Sydney, Australia; Schizophrenia Research Laboratory, Neuroscience Research Australia, Sydney, Australia; Discipline of Psychiatry & Mental Health, Faculty of Medicine, University of New South Wales, Sydney, Australia
| | - Illya Conn
- Preclinical Neuropsychiatry Laboratory, Neuroscience Research Australia, Sydney, Australia; Schizophrenia Research Laboratory, Neuroscience Research Australia, Sydney, Australia
| | - Brendan Navaneethan
- Preclinical Neuropsychiatry Laboratory, Neuroscience Research Australia, Sydney, Australia
| | - Andriane G Penklis
- Preclinical Neuropsychiatry Laboratory, Neuroscience Research Australia, Sydney, Australia; Schizophrenia Research Laboratory, Neuroscience Research Australia, Sydney, Australia
| | - Urs Meyer
- Institute of Pharmacology and Toxicology, University of Zürich-Vetsuisse, Zürich, Switzerland; Switzerland Neuroscience Centre Zürich, Zürich, Switzerland
| | - Simon Killcross
- School of Psychology, University of New South Wales, Sydney, Australia
| | - Cynthia Shannon Weickert
- Schizophrenia Research Laboratory, Neuroscience Research Australia, Sydney, Australia; Discipline of Psychiatry & Mental Health, Faculty of Medicine, University of New South Wales, Sydney, Australia; Department of Neuroscience & Physiology, Upstate Medical University, Syracuse, USA
| | - Tertia D Purves-Tyson
- Preclinical Neuropsychiatry Laboratory, Neuroscience Research Australia, Sydney, Australia; Discipline of Psychiatry & Mental Health, Faculty of Medicine, University of New South Wales, Sydney, Australia.
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Guma E, Chakravarty MM. Immune Alterations in the Intrauterine Environment Shape Offspring Brain Development in a Sex-Specific Manner. Biol Psychiatry 2024:S0006-3223(24)01260-5. [PMID: 38679357 DOI: 10.1016/j.biopsych.2024.04.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 03/20/2024] [Accepted: 04/17/2024] [Indexed: 05/01/2024]
Abstract
Exposure to immune dysregulation in utero or in early life has been shown to increase risk for neuropsychiatric illness. The sources of inflammation can be varied, including acute exposures due to maternal infection or acute stress, or persistent exposures due to chronic stress, obesity, malnutrition, or autoimmune diseases. These exposures may cause subtle alteration in brain development, structure, and function that can become progressively magnified across the life span, potentially increasing the likelihood of developing a neuropsychiatric conditions. There is some evidence that males are more susceptible to early-life inflammatory challenges than females. In this review, we discuss the various sources of in utero or early-life immune alteration and the known effects on fetal development with a sex-specific lens. To do so, we leveraged neuroimaging, behavioral, cellular, and neurochemical findings. Gaining clarity about how the intrauterine environment affects offspring development is critically important for informing preventive and early intervention measures that may buffer against the effects of these early-life risk factors.
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Affiliation(s)
- Elisa Guma
- Section on Developmental Neurogenomics, Human Genetics Branch, National Institute of Mental Health, Bethesda, Maryland; Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Harvard Medical School, Charlestown, Massachusetts.
| | - M Mallar Chakravarty
- Computational Brain Anatomy Laboratory, Cerebral Imaging Centre, Douglas Mental Health University Institute, Montreal, Quebec, Canada; Cerebral Imaging Centre, Douglas Mental Health University Institute, Montreal, Quebec, Canada; Department of Psychiatry, McGill University, Montreal, Quebec, Canada; Department of Biomedical Engineering, McGill University, Montreal, Quebec, Canada
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8
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Faidi R, Reid AY. Early-life immune activation is a vulnerability factor for adult epileptogenesis in neurofibromatosis type 1 in male mice. Front Neurol 2024; 15:1284574. [PMID: 38685949 PMCID: PMC11056566 DOI: 10.3389/fneur.2024.1284574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Accepted: 03/28/2024] [Indexed: 05/02/2024] Open
Abstract
Introduction Patients with Neurofibromatosis type 1 (NF1), the most common neurocutaneous disorder, can develop several neurological manifestations that include cognitive impairments and epilepsy over their lifetime. It is unclear why certain patients with NF1 develop these conditions while others do not. Early-life immune activation promotes later-life seizure susceptibility, neurocognitive impairments, and leads to spontaneous seizures in some animal models of neurodevelopmental disorders, but the central nervous system immune profile and the enduring consequences of early-life immune activation on the developmental trajectory of the brain in NF1 have not yet been explored. We tested the hypothesis that early-life immune activation promotes the development of spatial memory impairments and epileptogenesis in a mouse model of NF1. Methods Male wild-type (WT) and Nf1+/- mice received systemic lipopolysaccharide (LPS) or saline at post-natal day 10 and were assessed in adulthood for learning and memory deficits in the Barnes maze and underwent EEG recordings to look for spontaneous epileptiform abnormalities and susceptibility to challenge with pentylenetetrazole (PTZ). Results Whereas early-life immune activation by a single injection of LPS acutely elicited a comparable brain cytokine signature in WT and Nf1+/- mice, it promoted spontaneous seizure activity in adulthood only in the Nf1+/- mice. Early-life immune activation affected susceptibility to PTZ-induced seizures similarly in both WT and Nf1+/-mice. There was no effect on spatial learning and memory regardless of mouse genotype. Discussion Our findings suggest second-hit environmental events such as early-life immune activation may promote epileptogenesis in the Nf1+/- mouse and may be a risk-factor for NF1-associated epilepsy.
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Affiliation(s)
- Rania Faidi
- Institute of Medical Science, University of Toronto, Toronto, ON, Canada
- Krembil Research Institute, University Health Network, Toronto, ON, Canada
| | - Aylin Y. Reid
- Institute of Medical Science, University of Toronto, Toronto, ON, Canada
- Krembil Research Institute, University Health Network, Toronto, ON, Canada
- Division of Neurology, University of Toronto, Toronto, ON, Canada
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Fortin O, DeBiasi RL, Mulkey SB. Congenital infectious encephalopathies from the intrapartum period to postnatal life. Semin Fetal Neonatal Med 2024:101526. [PMID: 38677956 DOI: 10.1016/j.siny.2024.101526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/29/2024]
Abstract
Congenital infections are a common but often underrecognized cause of fetal brain abnormalities, as well as fetal-neonatal morbidity and mortality, that should be considered by all healthcare professionals providing neurological care to fetuses and newborns. Maternal infection with various pathogens (cytomegalovirus, Toxoplasmosis, Rubella virus, Parvovirus B19, lymphocytic choriomeningitis virus, syphilis, Zika virus, varicella zoster virus) during pregnancy can be transmitted to the developing fetus, which can cause multisystem dysfunction and destructive or malformative central nervous system lesions. These can be recognized on fetal and neonatal imaging, including ultrasound and MRI. Imaging and clinical features often overlap, but some distinguishing features can help identify specific pathogens and guide subsequent testing strategies. Some pathogens can be specifically treated, and others can be managed with targeted interventions or symptomatic therapy based on expected complications. Neurological and neurodevelopmental complications related to congenital infections vary widely and are likely driven by a combination of pathophysiologic factors, alone or in combination. These include direct invasion of the fetal central nervous system by pathogens, inflammation of the maternal-placental-fetal triad in response to infection, and long-term effects of immunogenic and epigenetic changes in the fetus in response to maternal-fetal infection. Congenital infections and their neurodevelopmental impacts should be seen as an issue of public health policy, given that infection and the associated complications disproportionately affect woman and children from low- and middle-income countries and those with lower socio-economic status in high-income countries. Congenital infections may be preventable and treatable, which can improve long-term neurodevelopmental outcomes in children.
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Affiliation(s)
- Olivier Fortin
- Zickler Family Prenatal Pediatrics Institute, Children's National Hospital, Washington DC, USA
| | - Roberta L DeBiasi
- Division of Pediatric Infectious Disease, Children's National Hospital, Washington DC, USA; Department of Pediatrics, The George Washington University School of Medicine and Health Sciences, Washington DC, USA; Department of Tropical Medicine, Microbiology and Infectious Diseases, The George Washington University School of Medicine and Health Sciences, Washington DC, USA
| | - Sarah B Mulkey
- Zickler Family Prenatal Pediatrics Institute, Children's National Hospital, Washington DC, USA; Department of Pediatrics, The George Washington University School of Medicine and Health Sciences, Washington DC, USA; Department of Neurology and Rehabilitation Medicine, The George Washington University School of Medicine and Health Sciences, Washington DC, USA.
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Shao Y, Cai Y, Chen T, Hao K, Luo B, Wang X, Guo W, Su X, Lv L, Yang Y, Li W. Impaired erythropoietin-producing hepatocellular B receptors signaling in the prefrontal cortex and hippocampus following maternal immune activation in male rats. GENES, BRAIN, AND BEHAVIOR 2023; 22:e12863. [PMID: 37575018 PMCID: PMC10733575 DOI: 10.1111/gbb.12863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 08/02/2023] [Accepted: 08/02/2023] [Indexed: 08/15/2023]
Abstract
An environmental risk factor for schizophrenia (SZ) is maternal infection, which exerts longstanding effects on the neurodevelopment of offspring. Accumulating evidence suggests that synaptic disturbances may contribute to the pathology of the disease, but the underlying molecular mechanisms remain poorly understood. Erythropoietin-producing hepatocellular B (EphB) receptor signaling plays an important role in synaptic plasticity by regulating the formation and maturation of dendritic spines and regulating excitatory neurotransmission. We examined whether EphB receptors and downstream associated proteins are susceptible to environmental risk factors implicated in the etiology of synaptic disturbances in SZ. Using an established rodent model, which closely imitates the characteristics of SZ, we observed the behavioral performance and synaptic structure of male offspring in adolescence and early adulthood. We then analyzed the expression of EphB receptors and associated proteins in the prefrontal cortex and hippocampus. Maternal immune activation offspring showed significantly progressive cognitive impairment and pre-pulse inhibition deficits together with an increase in the expression of EphB2 receptors and NMDA receptor subunits. We also found changes in EphB receptor downstream signaling, in particular, a decrease in phospho-cofilin levels which may explain the reduced dendritic spine density. Besides, we found that the AMPA glutamate, another glutamate ionic receptor associated with cofilin, decreased significantly in maternal immune activation offspring. Thus, alterations in EphB signaling induced by immune activation during pregnancy may underlie disruptions in synaptic plasticity and function in the prefrontal cortex and hippocampus associated with behavioral and cognitive impairment. These findings may provide insight into the mechanisms underlying SZ.
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Affiliation(s)
- Yiqian Shao
- Henan Mental HospitalThe Second Affiliated Hospital of Xinxiang Medical UniversityXinxiangChina
- Henan Key Lab of Biological Psychiatry, International Joint Research Laboratory for Psychiatry and Neuroscience of HenanXinxiang Medical UniversityXinxiangChina
| | - Yaqi Cai
- Henan Mental HospitalThe Second Affiliated Hospital of Xinxiang Medical UniversityXinxiangChina
- Henan Key Lab of Biological Psychiatry, International Joint Research Laboratory for Psychiatry and Neuroscience of HenanXinxiang Medical UniversityXinxiangChina
| | - Tengfei Chen
- Henan Mental HospitalThe Second Affiliated Hospital of Xinxiang Medical UniversityXinxiangChina
- Henan Key Lab of Biological Psychiatry, International Joint Research Laboratory for Psychiatry and Neuroscience of HenanXinxiang Medical UniversityXinxiangChina
| | - Keke Hao
- Henan Mental HospitalThe Second Affiliated Hospital of Xinxiang Medical UniversityXinxiangChina
- Henan Key Lab of Biological Psychiatry, International Joint Research Laboratory for Psychiatry and Neuroscience of HenanXinxiang Medical UniversityXinxiangChina
| | - Binbin Luo
- Henan Mental HospitalThe Second Affiliated Hospital of Xinxiang Medical UniversityXinxiangChina
- Henan Key Lab of Biological Psychiatry, International Joint Research Laboratory for Psychiatry and Neuroscience of HenanXinxiang Medical UniversityXinxiangChina
| | - Xiujuan Wang
- Henan Mental HospitalThe Second Affiliated Hospital of Xinxiang Medical UniversityXinxiangChina
- Henan Key Lab of Biological Psychiatry, International Joint Research Laboratory for Psychiatry and Neuroscience of HenanXinxiang Medical UniversityXinxiangChina
| | - Weiyun Guo
- Henan Mental HospitalThe Second Affiliated Hospital of Xinxiang Medical UniversityXinxiangChina
- Henan Key Lab of Biological Psychiatry, International Joint Research Laboratory for Psychiatry and Neuroscience of HenanXinxiang Medical UniversityXinxiangChina
- Stem Cell and Biological Treatment Engineering Research Center of Henan, College of Life Science and TechnologyXinxiang Medical UniversityXinxiangChina
| | - Xi Su
- Henan Mental HospitalThe Second Affiliated Hospital of Xinxiang Medical UniversityXinxiangChina
- Henan Key Lab of Biological Psychiatry, International Joint Research Laboratory for Psychiatry and Neuroscience of HenanXinxiang Medical UniversityXinxiangChina
- Henan Collaborative Innovation Center of Prevention and Treatment of Mental DisorderXinxiang Medical UniversityXinxiangChina
| | - Luxian Lv
- Henan Mental HospitalThe Second Affiliated Hospital of Xinxiang Medical UniversityXinxiangChina
- Henan Key Lab of Biological Psychiatry, International Joint Research Laboratory for Psychiatry and Neuroscience of HenanXinxiang Medical UniversityXinxiangChina
- Henan Collaborative Innovation Center of Prevention and Treatment of Mental DisorderXinxiang Medical UniversityXinxiangChina
| | - Yongfeng Yang
- Henan Mental HospitalThe Second Affiliated Hospital of Xinxiang Medical UniversityXinxiangChina
- Henan Key Lab of Biological Psychiatry, International Joint Research Laboratory for Psychiatry and Neuroscience of HenanXinxiang Medical UniversityXinxiangChina
- Henan Collaborative Innovation Center of Prevention and Treatment of Mental DisorderXinxiang Medical UniversityXinxiangChina
| | - Wenqiang Li
- Henan Mental HospitalThe Second Affiliated Hospital of Xinxiang Medical UniversityXinxiangChina
- Henan Key Lab of Biological Psychiatry, International Joint Research Laboratory for Psychiatry and Neuroscience of HenanXinxiang Medical UniversityXinxiangChina
- Henan Collaborative Innovation Center of Prevention and Treatment of Mental DisorderXinxiang Medical UniversityXinxiangChina
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11
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Anshu K, Nair AK, Srinath S, Laxmi TR. Altered Developmental Trajectory in Male and Female Rats in a Prenatal Valproic Acid Exposure Model of Autism Spectrum Disorder. J Autism Dev Disord 2023; 53:4390-4411. [PMID: 35976506 DOI: 10.1007/s10803-022-05684-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/13/2022] [Indexed: 10/15/2022]
Abstract
Early motor and sensory developmental delays precede Autism Spectrum Disorder (ASD) diagnosis and may serve as early indicators of ASD. The literature on sensorimotor development in animal models is sparse, male centered, and has mixed findings. We characterized early development in a prenatal valproic acid (VPA) model of ASD and found sex-specific developmental delays in VPA rats. We created a developmental composite score combining 15 test readouts, yielding a reliable gestalt measure spanning physical, sensory, and motor development, that effectively discriminated between VPA and control groups. Considering the heterogeneity in ASD phenotype, the developmental composite offers a robust metric that can enable comparison across different animal models of ASD and can serve as an outcome measure for early intervention studies.
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Affiliation(s)
- Kumari Anshu
- Department of Neurophysiology, National Institute of Mental Health and Neurosciences (NIMHANS), Hosur Main Road, Bengaluru, Karnataka, 560029, India
- Waisman Center, University of Wisconsin-Madison, Madison, 53705, WI, USA
| | - Ajay Kumar Nair
- Department of Neurophysiology, National Institute of Mental Health and Neurosciences (NIMHANS), Hosur Main Road, Bengaluru, Karnataka, 560029, India
- Center for Healthy Minds, University of Wisconsin-Madison, Madison, 53703, WI, USA
| | - Shoba Srinath
- Department of Child and Adolescent Psychiatry, National Institute of Mental Health and Neurosciences (NIMHANS), Hosur Main Road, Bengaluru, Karnataka, 560029, India
| | - T Rao Laxmi
- Department of Neurophysiology, National Institute of Mental Health and Neurosciences (NIMHANS), Hosur Main Road, Bengaluru, Karnataka, 560029, India.
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12
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Hashimoto K. Arketamine for cognitive impairment in psychiatric disorders. Eur Arch Psychiatry Clin Neurosci 2023; 273:1513-1525. [PMID: 36786865 PMCID: PMC9925943 DOI: 10.1007/s00406-023-01570-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Accepted: 02/01/2023] [Indexed: 02/15/2023]
Abstract
Cognitive impairment has been observed in patients with various psychiatric disorders, including schizophrenia, major depressive disorder (MDD), and bipolar disorder (BD). Although modern therapeutic drugs can improve certain symptoms (i.e., psychosis, depression) in these patients, these drugs have not been found to improve cognitive impairment. The N-methyl-D-aspartate receptor antagonist (R,S)-ketamine has attracted attention as a rapidly acting antidepressant. In addition to its robust antidepressant effects, (R,S)-ketamine has been suggested to improve cognitive impairment in patients with MDD and BD, despite causing cognitive impairment in healthy control subjects. (R,S)-ketamine is a racemic mixture of equal amounts of (R)-ketamine (or arketamine) and (S)-ketamine (or esketamine). Arketamine has been found to have more potent antidepressant-like actions than esketamine in rodents. Interestingly, arketamine, but not esketamine, has been suggested to improve phencyclidine-induced cognitive deficits in mice. Furthermore, arketamine has been suggested to ameliorate cognitive deficits in rodent offspring after maternal immune activation. In the current article, it is proposed that arketamine has therapeutic potential for treating cognitive impairment in patients with psychiatric disorders. Additionally, the potential role of the gut-microbiome-brain axis in cognitive impairment in psychiatric disorders is discussed.
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Affiliation(s)
- Kenji Hashimoto
- Division of Clinical Neuroscience, Chiba University Center for Forensic Mental Health, 1-8-1 Inohana, Chiba, 260-8670, Japan.
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13
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Lesh TA, Iosif AM, Tanase C, Vlasova RM, Ryan AM, Bennett J, Hogrefe CE, Maddock RJ, Geschwind DH, Van de Water J, McAllister AK, Styner MA, Bauman MD, Carter CS. Extracellular free water elevations are associated with brain volume and maternal cytokine response in a longitudinal nonhuman primate maternal immune activation model. Mol Psychiatry 2023; 28:4185-4194. [PMID: 37582858 PMCID: PMC10867284 DOI: 10.1038/s41380-023-02213-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 07/21/2023] [Accepted: 08/02/2023] [Indexed: 08/17/2023]
Abstract
Maternal infection has emerged as an important environmental risk factor for neurodevelopmental disorders, including schizophrenia and autism spectrum disorders. Animal model systems of maternal immune activation (MIA) suggest that the maternal immune response plays a significant role in the offspring's neurodevelopment and behavioral outcomes. Extracellular free water is a measure of freely diffusing water in the brain that may be associated with neuroinflammation and impacted by MIA. The present study evaluates the brain diffusion characteristics of male rhesus monkeys (Macaca mulatta) born to MIA-exposed dams (n = 14) treated with a modified form of the viral mimic polyinosinic:polycytidylic acid at the end of the first trimester. Control dams received saline injections at the end of the first trimester (n = 10) or were untreated (n = 4). Offspring underwent diffusion MRI scans at 6, 12, 24, 36, and 45 months. Offspring born to MIA-exposed dams showed significantly increased extracellular free water in cingulate cortex gray matter starting as early as 6 months of age and persisting through 45 months. In addition, offspring gray matter free water in this region was significantly correlated with the magnitude of the maternal IL-6 response in the MIA-exposed dams. Significant correlations between brain volume and extracellular free water in the MIA-exposed offspring also indicate converging, multimodal evidence of the impact of MIA on brain development. These findings provide strong evidence for the construct validity of the nonhuman primate MIA model as a system of relevance for investigating the pathophysiology of human neurodevelopmental psychiatric disorders. Elevated free water in individuals exposed to immune activation in utero could represent an early marker of a perturbed or vulnerable neurodevelopmental trajectory.
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Affiliation(s)
- Tyler A Lesh
- Department of Psychiatry and Behavioral Sciences, University of California, Davis, CA, USA
| | - Ana-Maria Iosif
- Division of Biostatistics, Department of Public Health Sciences, University of California, Davis, CA, USA
| | - Costin Tanase
- Department of Psychiatry and Behavioral Sciences, University of California, Davis, CA, USA
| | - Roza M Vlasova
- Department of Psychiatry, University of North Carolina, Chapel Hill, NC, USA
| | - Amy M Ryan
- Department of Psychiatry and Behavioral Sciences, University of California, Davis, CA, USA
- MIND Institute, University of California, Davis, CA, USA
- California National Primate Research Center, Davis, CA, USA
| | - Jeffrey Bennett
- Department of Psychiatry and Behavioral Sciences, University of California, Davis, CA, USA
| | | | - Richard J Maddock
- Department of Psychiatry and Behavioral Sciences, University of California, Davis, CA, USA
| | - Daniel H Geschwind
- Neurogenetics Program, Department of Neurology, University of California, Los Angeles, CA, USA
| | - Judy Van de Water
- MIND Institute, University of California, Davis, CA, USA
- Rheumatology/Allergy and Clinical Immunology, University of California, Davis, CA, USA
| | - A Kimberley McAllister
- MIND Institute, University of California, Davis, CA, USA
- Center for Neuroscience, University of California, Davis, CA, USA
| | - Martin A Styner
- Department of Psychiatry, University of North Carolina, Chapel Hill, NC, USA
| | - Melissa D Bauman
- Department of Psychiatry and Behavioral Sciences, University of California, Davis, CA, USA
- MIND Institute, University of California, Davis, CA, USA
- California National Primate Research Center, Davis, CA, USA
| | - Cameron S Carter
- Department of Psychiatry and Behavioral Sciences, University of California, Davis, CA, USA.
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14
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Dabbah-Assadi F, Rashid S, Golani I, Rubinstein A, Doron R, Alon D, Palzur E, Beloosesky R, Shamir A. Long-term effects of prophylactic MgSO 4 in maternal immune activation rodent model at adolescence and adulthood. J Neurosci Res 2023; 101:316-326. [PMID: 36434794 PMCID: PMC10100175 DOI: 10.1002/jnr.25148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 11/06/2022] [Accepted: 11/07/2022] [Indexed: 11/27/2022]
Abstract
The effects of MgSO4 as an anti-inflammatory agent in pregnant women have been investigated in the last few years. Infections can cause an inflammatory reaction involving the placenta membranes and amniotic cavity. They may have short-term effects on the mother and her fetuses, like preterm birth, cerebral palsy, and developmental delay. Despite the alleged advantages of MgSO4 as a neuroprotective agent in the preterm brain, the long-term molecular and behavioral function of MgSO4 has not been fully elucidated. Here, we investigated the long-term effect of antenatal MgSO4 , during late gestation, on offspring's behavior focusing on cognitive function, motor activity, and social cognition in adolescence and adulthood, and explored its influence on brain gene expression (e.g., ErbB signaling, pro-inflammatory, and dopaminergic markers) in adulthood. A significant abnormal exploratory behavior of offspring of MgSO4 -treated dams was found compared to the control group in both adolescence and adulthood. Furthermore, we found that adult females exposed to MgSO4 under inflammation displayed working and recognition memory impairment. A reduction in IL-6 expression was detected in the prefrontal cortex, and hippocampus specimens derived from LPS-Mg-treated group. In contrast, an imbalanced expression of dopamine 1 and 2 receptors was detected only in prefrontal cortex specimens. Besides, we found that MgSO4 ameliorated the overexpression of the Nrg1 and Erbb4 receptors induced by LPS in the hippocampus. Thus, MgSO4 treatment for preventing brain injuries can adversely affect offspring cognition behavior later in life, depending on the sex and age of the offspring.
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Affiliation(s)
- Fadwa Dabbah-Assadi
- Psychobiology Research Laboratory, Mazor Mental Health Center, Akko, Israel.,The Ruth and Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - Sally Rashid
- Department of Biotechnology Engineering, ORT Braude College, Karmiel, Israel
| | - Idit Golani
- Department of Biotechnology Engineering, ORT Braude College, Karmiel, Israel
| | - Alon Rubinstein
- Faculty of Medicine in the Galilee, Bar-Ilan University, Zefat, Israel
| | - Ravid Doron
- Department of Education and Psychology, the Open University, Raanana, Israel
| | - David Alon
- Psychobiology Research Laboratory, Mazor Mental Health Center, Akko, Israel
| | - Eilam Palzur
- The Neuroscience Laboratory, Galilee Medical Center Research Institute, Nahariya, Israel
| | - Ron Beloosesky
- The Ruth and Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel.,Department of Obstetrics and Gynecology, Rambam Medical Center, Haifa, Israel
| | - Alon Shamir
- Psychobiology Research Laboratory, Mazor Mental Health Center, Akko, Israel.,The Ruth and Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
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15
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Guma E, Cupo L, Ma W, Gallino D, Moquin L, Gratton A, Devenyi GA, Chakravarty MM. Investigating the "two-hit hypothesis": Effects of prenatal maternal immune activation and adolescent cannabis use on neurodevelopment in mice. Prog Neuropsychopharmacol Biol Psychiatry 2023; 120:110642. [PMID: 36150422 DOI: 10.1016/j.pnpbp.2022.110642] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 09/14/2022] [Accepted: 09/16/2022] [Indexed: 12/09/2022]
Abstract
Prenatal exposure to maternal immune activation (MIA) and chronic adolescent cannabis use are both risk factors for neuropsychiatric disorders. However, exposure to a single risk factor may not result in major mental illness, indicating that multiple exposures may be required for illness onset. Here, we examine whether combined exposure to prenatal MIA and adolescent delta-9-tetrahydrocannabinol (THC), the main psychoactive component of cannabis, lead to enduring neuroanatomical and behavioural changes in adulthood. Mice were prenatally exposed to viral mimetic, poly I:C (5 mg/kg), or vehicle at gestational day (GD) 9, and postnatally exposed to chronic THC (5 mg/kg, intraperitoneal) or vehicle during adolescence (postnatal day [PND]28-45). Longitudinal magnetic resonance imaging (MRI) was performed pre-treatment, PND 25, post-treatment, PND 50, and in adulthood, PND85, followed by behavioural tests for anxiety-like, social, and sensorimotor gating. Post-mortem assessment of cannabinoid (CB)1 and 2 receptor expressing cells was performed in altered regions identified by MRI (anterior cingulate and somatosensory cortices, striatum, and hippocampus). Subtle deviations in neurodevelopmental trajectory and subthreshold anxiety-like behaviours were observed in mice exposed to both risk factors. Sex-dependent effects were observed in patterns of shared brain-behaviour covariation, indicative of potential sex differences in response to MIA and THC. Density of CB1 and CB2 receptor positive cells was significantly decreased in all mice exposed to MIA, THC, or both. These findings suggest that there may be a cumulative effect of risk factor exposure on gross neuroanatomical development, and that the endocannabinoid system may be sensitive to both prenatal MIA, adolescent THC, or the combination.
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Affiliation(s)
- Elisa Guma
- Computational Brain Anatomy Laboratory, Cerebral Imaging Center, Douglas Mental Health University Institute, Montreal, Quebec, Canada; Integrated Program in Neuroscience, McGill University, Montreal, Quebec, Canada; Developmental Neurogenomics Unit, Human Genetics Branch, National Institute of Mental Health, Bethesda, MD, USA.
| | - Lani Cupo
- Computational Brain Anatomy Laboratory, Cerebral Imaging Center, Douglas Mental Health University Institute, Montreal, Quebec, Canada; Integrated Program in Neuroscience, McGill University, Montreal, Quebec, Canada
| | - Weiya Ma
- Douglas Mental Health University Institute, McGill University, Montréal, Québec, Canada
| | - Daniel Gallino
- Computational Brain Anatomy Laboratory, Cerebral Imaging Center, Douglas Mental Health University Institute, Montreal, Quebec, Canada
| | - Luc Moquin
- Douglas Mental Health University Institute, McGill University, Montréal, Québec, Canada
| | - Alain Gratton
- Integrated Program in Neuroscience, McGill University, Montreal, Quebec, Canada; Department of Psychiatry, McGill University, Montreal, Quebec, Canada; Douglas Mental Health University Institute, McGill University, Montréal, Québec, Canada
| | - Gabriel A Devenyi
- Computational Brain Anatomy Laboratory, Cerebral Imaging Center, Douglas Mental Health University Institute, Montreal, Quebec, Canada; Department of Psychiatry, McGill University, Montreal, Quebec, Canada; Douglas Mental Health University Institute, McGill University, Montréal, Québec, Canada
| | - M Mallar Chakravarty
- Computational Brain Anatomy Laboratory, Cerebral Imaging Center, Douglas Mental Health University Institute, Montreal, Quebec, Canada; Integrated Program in Neuroscience, McGill University, Montreal, Quebec, Canada; Department of Psychiatry, McGill University, Montreal, Quebec, Canada; Douglas Mental Health University Institute, McGill University, Montréal, Québec, Canada; Department of Biological and Biomedical Engineering, McGill University, Montreal, Quebec, Canada.
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16
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Hall MB, Willis DE, Rodriguez EL, Schwarz JM. Maternal immune activation as an epidemiological risk factor for neurodevelopmental disorders: Considerations of timing, severity, individual differences, and sex in human and rodent studies. Front Neurosci 2023; 17:1135559. [PMID: 37123361 PMCID: PMC10133487 DOI: 10.3389/fnins.2023.1135559] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2023] [Accepted: 03/13/2023] [Indexed: 05/02/2023] Open
Abstract
Epidemiological evidence suggests that one's risk of being diagnosed with a neurodevelopmental disorder (NDD)-such as autism, ADHD, or schizophrenia-increases significantly if their mother had a viral or bacterial infection during the first or second trimester of pregnancy. Despite this well-known data, little is known about how developing neural systems are perturbed by events such as early-life immune activation. One theory is that the maternal immune response disrupts neural processes important for typical fetal and postnatal development, which can subsequently result in specific and overlapping behavioral phenotypes in offspring, characteristic of NDDs. As such, rodent models of maternal immune activation (MIA) have been useful in elucidating neural mechanisms that may become dysregulated by MIA. This review will start with an up-to-date and in-depth, critical summary of epidemiological data in humans, examining the association between different types of MIA and NDD outcomes in offspring. Thereafter, we will summarize common rodent models of MIA and discuss their relevance to the human epidemiological data. Finally, we will highlight other factors that may interact with or impact MIA and its associated risk for NDDs, and emphasize the importance for researchers to consider these when designing future human and rodent studies. These points to consider include: the sex of the offspring, the developmental timing of the immune challenge, and other factors that may contribute to individual variability in neural and behavioral responses to MIA, such as genetics, parental age, the gut microbiome, prenatal stress, and placental buffering.
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17
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Nazeri A, Krsnik Ž, Kostović I, Ha SM, Kopić J, Alexopoulos D, Kaplan S, Meyer D, Luby JL, Warner BB, Rogers CE, Barch DM, Shimony JS, McKinstry RC, Neil JJ, Smyser CD, Sotiras A. Neurodevelopmental patterns of early postnatal white matter maturation represent distinct underlying microstructure and histology. Neuron 2022; 110:4015-4030.e4. [PMID: 36243003 PMCID: PMC9742299 DOI: 10.1016/j.neuron.2022.09.020] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 08/19/2022] [Accepted: 09/15/2022] [Indexed: 11/06/2022]
Abstract
Cerebral white matter undergoes a rapid and complex maturation during the early postnatal period. Prior magnetic resonance imaging (MRI) studies of early postnatal development have often been limited by small sample size, single-modality imaging, and univariate analytics. Here, we applied nonnegative matrix factorization, an unsupervised multivariate pattern analysis technique, to T2w/T1w signal ratio maps from the Developing Human Connectome Project (n = 342 newborns) revealing patterns of coordinated white matter maturation. These patterns showed divergent age-related maturational trajectories, which were replicated in another independent cohort (n = 239). Furthermore, we showed that T2w/T1w signal variations in these maturational patterns are explained by differential contributions of white matter microstructural indices derived from diffusion-weighted MRI. Finally, we demonstrated how white matter maturation patterns relate to distinct histological features by comparing our findings with postmortem late fetal/early postnatal brain tissue staining. Together, these results delineate concise and effective representation of early postnatal white matter reorganization.
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Affiliation(s)
- Arash Nazeri
- Mallinckrodt Institute of Radiology, Washington University School of Medicine, Saint Louis, MO 63110, USA.
| | - Željka Krsnik
- Croatian Institute for Brain Research, School of Medicine, University of Zagreb School of Medicine, Zagreb 10000, Croatia
| | - Ivica Kostović
- Croatian Institute for Brain Research, School of Medicine, University of Zagreb School of Medicine, Zagreb 10000, Croatia
| | - Sung Min Ha
- Mallinckrodt Institute of Radiology, Washington University School of Medicine, Saint Louis, MO 63110, USA
| | - Janja Kopić
- Croatian Institute for Brain Research, School of Medicine, University of Zagreb School of Medicine, Zagreb 10000, Croatia
| | - Dimitrios Alexopoulos
- Department of Neurology, Washington University School of Medicine, Saint Louis, MO 63110, USA
| | - Sydney Kaplan
- Department of Neurology, Washington University School of Medicine, Saint Louis, MO 63110, USA
| | - Dominique Meyer
- Department of Neurology, Washington University School of Medicine, Saint Louis, MO 63110, USA
| | - Joan L Luby
- Department of Psychiatry, Washington University School of Medicine, Saint Louis, MO 63110, USA
| | - Barbara B Warner
- Department of Pediatrics, Washington University School of Medicine, Saint Louis, MO 63110, USA
| | - Cynthia E Rogers
- Department of Psychiatry, Washington University School of Medicine, Saint Louis, MO 63110, USA
| | - Deanna M Barch
- Mallinckrodt Institute of Radiology, Washington University School of Medicine, Saint Louis, MO 63110, USA; Department of Psychiatry, Washington University School of Medicine, Saint Louis, MO 63110, USA; Psychological & Brain Sciences, Washington University School in St. Louis, Saint Louis, MO 63130, USA
| | - Joshua S Shimony
- Mallinckrodt Institute of Radiology, Washington University School of Medicine, Saint Louis, MO 63110, USA
| | - Robert C McKinstry
- Mallinckrodt Institute of Radiology, Washington University School of Medicine, Saint Louis, MO 63110, USA
| | - Jeffrey J Neil
- Department of Neurology, Washington University School of Medicine, Saint Louis, MO 63110, USA
| | - Christopher D Smyser
- Mallinckrodt Institute of Radiology, Washington University School of Medicine, Saint Louis, MO 63110, USA; Department of Neurology, Washington University School of Medicine, Saint Louis, MO 63110, USA; Department of Pediatrics, Washington University School of Medicine, Saint Louis, MO 63110, USA
| | - Aristeidis Sotiras
- Mallinckrodt Institute of Radiology, Washington University School of Medicine, Saint Louis, MO 63110, USA; Institute for Informatics, Washington University School of Medicine, Saint Louis, MO 63108, USA.
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18
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Hanson KL, Grant SE, Funk LH, Schumann CM, Bauman MD. Impact of Maternal Immune Activation on Nonhuman Primate Prefrontal Cortex Development: Insights for Schizophrenia. Biol Psychiatry 2022; 92:460-469. [PMID: 35773097 PMCID: PMC9888668 DOI: 10.1016/j.biopsych.2022.04.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 03/30/2022] [Accepted: 04/13/2022] [Indexed: 02/02/2023]
Abstract
Late adolescence is a period of dynamic change in the brain as humans learn to navigate increasingly complex environments. In particular, prefrontal cortical (PFC) regions undergo extensive remodeling as the brain is fine-tuned to orchestrate cognitive control over attention, reasoning, and emotions. Late adolescence also presents a uniquely vulnerable period as neurodevelopmental illnesses, such as schizophrenia, become evident and worsen into young adulthood. Challenges in early development, including prenatal exposure to infection, may set the stage for a cascade of maladaptive events that ultimately result in aberrant PFC connectivity and function before symptoms emerge. A growing body of research suggests that activation of the mother's immune system during pregnancy may act as a disease primer, in combination with other environmental and genetic factors, contributing to an increased risk of neurodevelopmental disorders, including schizophrenia. Animal models provide an invaluable opportunity to examine the course of brain and behavioral changes in offspring exposed to maternal immune activation (MIA). Although the vast majority of MIA research has been carried out in rodents, here we highlight the translational utility of the nonhuman primate (NHP) as a model species more closely related to humans in PFC structure and function. In this review, we consider the protracted period of brain and behavioral maturation in the NHP, describe emerging findings from MIA NHP offspring in the context of rodent preclinical models, and lastly explore the translational relevance of the NHP MIA model to expand understanding of the etiology and developmental course of PFC pathology in schizophrenia.
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Affiliation(s)
- Kari L Hanson
- Department of Psychiatry and Behavioral Sciences, University of California, Davis, Davis, California; MIND Institute, University of California, Davis, Davis, California
| | - Simone E Grant
- Department of Psychiatry and Behavioral Sciences, University of California, Davis, Davis, California
| | - Lucy H Funk
- Department of Psychiatry and Behavioral Sciences, University of California, Davis, Davis, California
| | - Cynthia M Schumann
- Department of Psychiatry and Behavioral Sciences, University of California, Davis, Davis, California; MIND Institute, University of California, Davis, Davis, California.
| | - Melissa D Bauman
- Department of Psychiatry and Behavioral Sciences, University of California, Davis, Davis, California; MIND Institute, University of California, Davis, Davis, California; California National Primate Research Center, University of California, Davis, Davis, California.
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19
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Angrand L, Masson JD, Rubio-Casillas A, Nosten-Bertrand M, Crépeaux G. Inflammation and Autophagy: A Convergent Point between Autism Spectrum Disorder (ASD)-Related Genetic and Environmental Factors: Focus on Aluminum Adjuvants. TOXICS 2022; 10:toxics10090518. [PMID: 36136483 PMCID: PMC9502677 DOI: 10.3390/toxics10090518] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 08/19/2022] [Accepted: 08/25/2022] [Indexed: 05/10/2023]
Abstract
Autism spectrum disorder (ASD), schizophrenia, and bipolar disorder are genetically complex and heterogeneous neurodevelopmental disorders (NDDs) resulting from genetic factors and gene-environment (GxE) interactions for which onset occurs in early brain development. Recent progress highlights the link between ASD and (i) immunogenetics, neurodevelopment, and inflammation, and (ii) impairments of autophagy, a crucial neurodevelopmental process involved in synaptic pruning. Among various environmental factors causing risk for ASD, aluminum (Al)-containing vaccines injected during critical periods have received special attention and triggered relevant scientific questions. The aim of this review is to discuss the current knowledge on the role of early inflammation, immune and autophagy dysfunction in ASD as well as preclinical studies which question Al adjuvant impacts on brain and immune maturation. We highlight the most recent breakthroughs and the lack of epidemiological, pharmacokinetic and pharmacodynamic data constituting a "scientific gap". We propose additional research, such as genetic studies that could contribute to identify populations at genetic risk, improving diagnosis, and potentially the development of new therapeutic tools.
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Affiliation(s)
- Loïc Angrand
- Univ Paris Est Créteil, INSERM, IMRB, F-94010 Créteil, France; (L.A.); (J.-D.M.)
- Ecole Nationale Vétérinaire d’Alfort IMRB, F-94700 Maisons-Alfort, France
- INSERM UMR-S 1270, 75005 Paris, France;
- Sorbonne Université, Campus Pierre et Marie Curie, 75005 Paris, France
- Institut du Fer à Moulin, 75005 Paris, France
| | - Jean-Daniel Masson
- Univ Paris Est Créteil, INSERM, IMRB, F-94010 Créteil, France; (L.A.); (J.-D.M.)
- Ecole Nationale Vétérinaire d’Alfort IMRB, F-94700 Maisons-Alfort, France
| | - Alberto Rubio-Casillas
- Biology Laboratory, Autlán Regional Preparatory School, University of Guadalajara, Autlán 48900, Jalisco, Mexico;
- Autlán Regional Hospital, Health Secretariat, Autlán 48900, Jalisco, Mexico
| | - Marika Nosten-Bertrand
- INSERM UMR-S 1270, 75005 Paris, France;
- Sorbonne Université, Campus Pierre et Marie Curie, 75005 Paris, France
- Institut du Fer à Moulin, 75005 Paris, France
| | - Guillemette Crépeaux
- Univ Paris Est Créteil, INSERM, IMRB, F-94010 Créteil, France; (L.A.); (J.-D.M.)
- Ecole Nationale Vétérinaire d’Alfort IMRB, F-94700 Maisons-Alfort, France
- Correspondence:
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Shan J, Hashimoto K. Soluble Epoxide Hydrolase as a Therapeutic Target for Neuropsychiatric Disorders. Int J Mol Sci 2022; 23:ijms23094951. [PMID: 35563342 PMCID: PMC9099663 DOI: 10.3390/ijms23094951] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 04/28/2022] [Accepted: 04/28/2022] [Indexed: 12/14/2022] Open
Abstract
It has been found that soluble epoxide hydrolase (sEH; encoded by the EPHX2 gene) in the metabolism of polyunsaturated fatty acids (PUFAs) plays a key role in inflammation, which, in turn, plays a part in the pathogenesis of neuropsychiatric disorders. Meanwhile, epoxy fatty acids such as epoxyeicosatrienoic acids (EETs), epoxyeicosatetraenoic acids (EEQs), and epoxyeicosapentaenoic acids (EDPs) have been found to exert neuroprotective effects in animal models of neuropsychiatric disorders through potent anti-inflammatory actions. Soluble expoxide hydrolase, an enzyme present in all living organisms, metabolizes epoxy fatty acids into the corresponding dihydroxy fatty acids, which are less active than the precursors. In this regard, preclinical findings using sEH inhibitors or Ephx2 knock-out (KO) mice have indicated that the inhibition or deficiency of sEH can have beneficial effects in several models of neuropsychiatric disorders. Thus, this review discusses the current findings of the role of sEH in neuropsychiatric disorders, including depression, autism spectrum disorder (ASD), schizophrenia, Parkinson’s disease (PD), and stroke, as well as the potential mechanisms underlying the therapeutic effects of sEH inhibitors.
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21
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Differential effects of early or late exposure to prenatal maternal immune activation on mouse embryonic neurodevelopment. Proc Natl Acad Sci U S A 2022; 119:e2114545119. [PMID: 35286203 PMCID: PMC8944668 DOI: 10.1073/pnas.2114545119] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Prenatal exposure to maternal infection increases the risk of developing mental health disorders, such as schizophrenia and autism spectrum disorder. Exposure to maternal immune activation has been associated with a number of neuroanatomical deficits in adolescent and adult offspring, with differing effects based on the gestational timing of infection. However, little is known about how the embryo brain is affected. We show, using whole-brain MRI, that maternal immune activation significantly affects brain anatomy. When the exposure occurs early in pregnancy, volume reductions are mainly observed, while the opposite is true for exposure later in pregnancy. Furthermore, we identify alterations to the density of certain classes of neurons and glia, which have been associated with stress and inflammation in the brain. Exposure to maternal immune activation (MIA) in utero is a risk factor for neurodevelopmental and psychiatric disorders. MIA-induced deficits in adolescent and adult offspring have been well characterized; however, less is known about the effects of MIA exposure on embryo development. To address this gap, we performed high-resolution ex vivo MRI to investigate the effects of early (gestational day [GD]9) and late (GD17) MIA exposure on embryo (GD18) brain structure. We identify striking neuroanatomical changes in the embryo brain, particularly in the late-exposed offspring. We further examined the putative neuroanatomical underpinnings of MIA timing in the hippocampus using electron microscopy and identified differential effects due to MIA timing. An increase in apoptotic cell density was observed in the GD9-exposed offspring, while an increase in the density of neurons and glia with ultrastructural features reflective of increased neuroinflammation and oxidative stress was observed in GD17-exposed offspring, particularly in females. Overall, our findings integrate imaging techniques across different scales to identify differential impact of MIA timing on the earliest stages of neurodevelopment.
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Jutla A, Foss-Feig J, Veenstra-VanderWeele J. Autism spectrum disorder and schizophrenia: An updated conceptual review. Autism Res 2022; 15:384-412. [PMID: 34967130 PMCID: PMC8931527 DOI: 10.1002/aur.2659] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 11/08/2021] [Accepted: 12/12/2021] [Indexed: 12/19/2022]
Abstract
Autism spectrum disorder (ASD) and schizophrenia (SCZ) are separate disorders, with distinct clinical profiles and natural histories. ASD, typically diagnosed in childhood, is characterized by restricted or repetitive interests or behaviors and impaired social communication, and it tends to have a stable course. SCZ, typically diagnosed in adolescence or adulthood, is characterized by hallucinations and delusions, and tends to be associated with declining function. However, youth with ASD are three to six times more likely to develop SCZ than their neurotypical counterparts, and increasingly, research has shown that ASD and SCZ converge at several levels. We conducted a systematic review of studies since 2013 relevant to understanding this convergence, and present here a narrative synthesis of key findings, which we have organized into four broad categories: symptoms and behavior, perception and cognition, biomarkers, and genetic and environmental risk. We then discuss opportunities for future research into the phenomenology and neurobiology of overlap between ASD and SCZ. Understanding this overlap will allow for researchers, and eventually clinicians, to understand the factors that may make a child with ASD vulnerable to developing SCZ. LAY SUMMARY: Autism spectrum disorder and schizophrenia are distinct diagnoses, but people with autism and people with schizophrena share several characteristics. We review recent studies that have examined these areas of overlap, and discuss the kinds of studies we will need to better understand how these disorders are related. Understanding this will be important to help us identify which autistic children are at risk of developing schizophrenia.
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Affiliation(s)
- Amandeep Jutla
- Columbia University Vagelos College of Physicians and
Surgeons, 630 W 168th St, New York, NY 10032, United States,New York State Psychiatric Institute, 1051 Riverside
Drive, Mail Unit 78, New York, NY 10032, United States
| | - Jennifer Foss-Feig
- Seaver Autism Center for Research and Treatment, Icahn
School of Medicine at Mount Sinai, Department of Psychiatry, 1 Gustave L. Levy
Place, Box 1230, New York, NY 10029, United States
| | - Jeremy Veenstra-VanderWeele
- Columbia University Vagelos College of Physicians and
Surgeons, 630 W 168th St, New York, NY 10032, United States,New York State Psychiatric Institute, 1051 Riverside
Drive, Mail Unit 78, New York, NY 10032, United States,Center for Autism and the Developing Brain, New
York-Presbyterian Westchester Behavioral Health Center, 21 Bloomingdale Road, White
Plains, NY 10605, United States
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23
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Vlasova RM, Iosif AM, Ryan AM, Funk LH, Murai T, Chen S, Lesh TA, Rowland DJ, Bennett J, Hogrefe CE, Maddock RJ, Gandal MJ, Geschwind DH, Schumann CM, Van de Water J, McAllister AK, Carter CS, Styner MA, Amaral DG, Bauman MD. Maternal Immune Activation during Pregnancy Alters Postnatal Brain Growth and Cognitive Development in Nonhuman Primate Offspring. J Neurosci 2021; 41:9971-9987. [PMID: 34607967 PMCID: PMC8638691 DOI: 10.1523/jneurosci.0378-21.2021] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 07/28/2021] [Accepted: 09/06/2021] [Indexed: 11/21/2022] Open
Abstract
Human epidemiological studies implicate exposure to infection during gestation in the etiology of neurodevelopmental disorders. Animal models of maternal immune activation (MIA) have identified the maternal immune response as the critical link between maternal infection and aberrant offspring brain and behavior development. Here we evaluate neurodevelopment of male rhesus monkeys (Macaca mulatta) born to MIA-treated dams (n = 14) injected with a modified form of the viral mimic polyinosinic:polycytidylic acid at the end of the first trimester. Control dams received saline injections at the same gestational time points (n = 10) or were untreated (n = 4). MIA-treated dams exhibited a strong immune response as indexed by transient increases in sickness behavior, temperature, and inflammatory cytokines. Although offspring born to control or MIA-treated dams did not differ on measures of physical growth and early developmental milestones, the MIA-treated animals exhibited subtle changes in cognitive development and deviated from species-typical brain growth trajectories. Longitudinal MRI revealed significant gray matter volume reductions in the prefrontal and frontal cortices of MIA-treated offspring at 6 months that persisted through the final time point at 45 months along with smaller frontal white matter volumes in MIA-treated animals at 36 and 45 months. These findings provide the first evidence of early postnatal changes in brain development in MIA-exposed nonhuman primates and establish a translationally relevant model system to explore the neurodevelopmental trajectory of risk associated with prenatal immune challenge from birth through late adolescence.SIGNIFICANCE STATEMENT Women exposed to infection during pregnancy have an increased risk of giving birth to a child who will later be diagnosed with a neurodevelopmental disorder. Preclinical maternal immune activation (MIA) models have demonstrated that the effects of maternal infection on fetal brain development are mediated by maternal immune response. Since the majority of MIA models are conducted in rodents, the nonhuman primate provides a unique system to evaluate the MIA hypothesis in a species closely related to humans. Here we report the first longitudinal study conducted in a nonhuman primate MIA model. MIA-exposed offspring demonstrate subtle changes in cognitive development paired with marked reductions in frontal gray and white matter, further supporting the association between prenatal immune challenge and alterations in offspring neurodevelopment.
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Affiliation(s)
- Roza M Vlasova
- Department of Psychiatry, University of North Carolina, Chapel Hill, North Carolina, 27514
| | - Ana-Maria Iosif
- Division of Biostatistics, Department of Public Health Sciences, School of Medicine, University of California, Davis, Sacramento, California, 95817
| | - Amy M Ryan
- Department of Psychiatry and Behavioral Sciences, School of Medicine, University of California, Davis, Sacramento, California, 95817
- The MIND Institute, School of Medicine, University of California, Davis, Sacramento, California, 95817
- California National Primate Research Center, University of California, Davis, California, 95616
| | - Lucy H Funk
- Department of Psychiatry and Behavioral Sciences, School of Medicine, University of California, Davis, Sacramento, California, 95817
| | - Takeshi Murai
- California National Primate Research Center, University of California, Davis, California, 95616
| | - Shuai Chen
- Division of Biostatistics, Department of Public Health Sciences, School of Medicine, University of California, Davis, Sacramento, California, 95817
| | - Tyler A Lesh
- Department of Psychiatry and Behavioral Sciences, School of Medicine, University of California, Davis, Sacramento, California, 95817
| | - Douglas J Rowland
- Center for Genomic and Molecular Imaging, University of California, Davis, California, 95616
| | - Jeffrey Bennett
- Department of Psychiatry and Behavioral Sciences, School of Medicine, University of California, Davis, Sacramento, California, 95817
| | - Casey E Hogrefe
- California National Primate Research Center, University of California, Davis, California, 95616
| | - Richard J Maddock
- Department of Psychiatry and Behavioral Sciences, School of Medicine, University of California, Davis, Sacramento, California, 95817
| | - Michael J Gandal
- Neurogenetics Program, Department of Neurology, University of California, Los Angeles, California, 90095
| | - Daniel H Geschwind
- Neurogenetics Program, Department of Neurology, University of California, Los Angeles, California, 90095
| | - Cynthia M Schumann
- Department of Psychiatry and Behavioral Sciences, School of Medicine, University of California, Davis, Sacramento, California, 95817
- The MIND Institute, School of Medicine, University of California, Davis, Sacramento, California, 95817
| | - Judy Van de Water
- The MIND Institute, School of Medicine, University of California, Davis, Sacramento, California, 95817
- Rheumatology/Allergy and Clinical Immunology, School of Medicine, University of California, Davis, Sacramento, California, 95817
| | - A Kimberley McAllister
- The MIND Institute, School of Medicine, University of California, Davis, Sacramento, California, 95817
- Center for Neuroscience, University of California, Davis, California, 95618
| | - Cameron S Carter
- Department of Psychiatry and Behavioral Sciences, School of Medicine, University of California, Davis, Sacramento, California, 95817
| | - Martin A Styner
- Department of Psychiatry, University of North Carolina, Chapel Hill, North Carolina, 27514
- Department of Computer Science, University of North Carolina, Chapel Hill, North Carolina, 27599
| | - David G Amaral
- Department of Psychiatry and Behavioral Sciences, School of Medicine, University of California, Davis, Sacramento, California, 95817
- The MIND Institute, School of Medicine, University of California, Davis, Sacramento, California, 95817
- California National Primate Research Center, University of California, Davis, California, 95616
| | - Melissa D Bauman
- Department of Psychiatry and Behavioral Sciences, School of Medicine, University of California, Davis, Sacramento, California, 95817
- The MIND Institute, School of Medicine, University of California, Davis, Sacramento, California, 95817
- California National Primate Research Center, University of California, Davis, California, 95616
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24
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Guma E, Snook E, Spring S, Lerch JP, Nieman BJ, Devenyi GA, Chakravarty MM. Subtle alterations in neonatal neurodevelopment following early or late exposure to prenatal maternal immune activation in mice. Neuroimage Clin 2021; 32:102868. [PMID: 34749289 PMCID: PMC8573196 DOI: 10.1016/j.nicl.2021.102868] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 10/25/2021] [Accepted: 10/26/2021] [Indexed: 11/21/2022]
Abstract
Prenatal exposure to maternal immune activation (MIA) is a risk factor for a variety of neurodevelopmental and psychiatric disorders. The timing of MIA-exposure has been shown to affect adolescent and adult offspring neurodevelopment, however, less is known about these effects in the neonatal period. To better understand the impact of MIA-exposure on neonatal brain development in a mouse model, we assess neonate communicative abilities with the ultrasonic vocalization task, followed by high-resolution ex vivo magnetic resonance imaging (MRI) on the neonatal (postnatal day 8) mouse brain. Early exposed offspring displayed decreased communicative ability, while brain anatomy appeared largely unaffected, apart from some subtle alterations. By integrating MRI and behavioural assays to investigate the effects of MIA-exposure on neonatal neurodevelopment we show that offspring neuroanatomy and behaviour are only subtly affected by both early and late exposure. This suggests that the deficits often observed in later stages of life may be dormant, not yet developed in the neonatal period, or not as easily detectable using a cross-sectional approach.
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Affiliation(s)
- Elisa Guma
- Computational Brain Anatomy Laboratory, Cerebral Imaging Center, Douglas Mental Health University Institute, Montreal, Quebec, Canada; Integrated Program in Neuroscience, McGill University, Montreal, Quebec, Canada.
| | - Emily Snook
- Computational Brain Anatomy Laboratory, Cerebral Imaging Center, Douglas Mental Health University Institute, Montreal, Quebec, Canada; Department of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Shoshana Spring
- Mouse Imaging Centre, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Jason P Lerch
- Mouse Imaging Centre, The Hospital for Sick Children, Toronto, Ontario, Canada; Department of Neurosciences and Mental Health, The Hospital for Sick Children, Toronto, Ontario, Canada; Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada; Wellcome Centre for Integrative Neuroimaging, University of Oxford, Oxford, United Kingdom
| | - Brian J Nieman
- Mouse Imaging Centre, The Hospital for Sick Children, Toronto, Ontario, Canada; Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada; Translational Medicine, The Hospital for Sick Children, Toronto, Ontario, Canada; Ontario Institute for Cancer Research, Toronto, Ontario, Canada
| | - Gabriel A Devenyi
- Computational Brain Anatomy Laboratory, Cerebral Imaging Center, Douglas Mental Health University Institute, Montreal, Quebec, Canada; Department of Psychiatry, McGill University, Montreal, Quebec, Canada
| | - M Mallar Chakravarty
- Computational Brain Anatomy Laboratory, Cerebral Imaging Center, Douglas Mental Health University Institute, Montreal, Quebec, Canada; Integrated Program in Neuroscience, McGill University, Montreal, Quebec, Canada; Department of Psychiatry, McGill University, Montreal, Quebec, Canada; Department of Biological and Biomedical Engineering, McGill University, Montreal, Quebec, Canada.
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25
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Chakravarty MM, Guma E. Small animal imaging presents an opportunity for improving translational research in biological psychiatry. J Psychiatry Neurosci 2021; 46:E579-E582. [PMID: 34670841 PMCID: PMC8532952 DOI: 10.1503/jpn.210172] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Affiliation(s)
| | - Elisa Guma
- From the Computational Brain Anatomy (CoBrA) Laboratory, Cerebral Imaging Centre, Douglas Research Institute, Montreal, Que., Canada (Chakravarty, Guma); the Department of Psychiatry, McGill University, Montreal, Que., Canada (Chakravarty); the Department of Biological and Biomedical Engineering, McGill University, Montreal, Que., Canada (Chakravarty); and the Developmental Neurogenomics Unit, Human Genetics Branch, National Institute of Mental Health, Intramural Program, USA (Guma)
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26
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Guma E, Bordignon PDC, Devenyi GA, Gallino D, Anastassiadis C, Cvetkovska V, Barry AD, Snook E, Germann J, Greenwood CMT, Misic B, Bagot RC, Chakravarty MM. Early or Late Gestational Exposure to Maternal Immune Activation Alters Neurodevelopmental Trajectories in Mice: An Integrated Neuroimaging, Behavioral, and Transcriptional Study. Biol Psychiatry 2021; 90:328-341. [PMID: 34053674 DOI: 10.1016/j.biopsych.2021.03.017] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 02/23/2021] [Accepted: 03/15/2021] [Indexed: 02/06/2023]
Abstract
BACKGROUND Exposure to maternal immune activation (MIA) in utero is a risk factor for neurodevelopmental disorders later in life. The impact of the gestational timing of MIA exposure on downstream development remains unclear. METHODS We characterized neurodevelopmental trajectories of mice exposed to the viral mimetic poly I:C (polyinosinic:polycytidylic acid) either on gestational day 9 (early) or on day 17 (late) using longitudinal structural magnetic resonance imaging from weaning to adulthood. Using multivariate methods, we related neuroimaging and behavioral variables for the time of greatest alteration (adolescence/early adulthood) and identified regions for further investigation using RNA sequencing. RESULTS Early MIA exposure was associated with accelerated brain volume increases in adolescence/early adulthood that normalized in later adulthood in the striatum, hippocampus, and cingulate cortex. Similarly, alterations in anxiety-like, stereotypic, and sensorimotor gating behaviors observed in adolescence normalized in adulthood. MIA exposure in late gestation had less impact on anatomical and behavioral profiles. Multivariate maps associated anxiety-like, social, and sensorimotor gating deficits with volume of the dorsal and ventral hippocampus and anterior cingulate cortex, among others. The most transcriptional changes were observed in the dorsal hippocampus, with genes enriched for fibroblast growth factor regulation, autistic behaviors, inflammatory pathways, and microRNA regulation. CONCLUSIONS Leveraging an integrated hypothesis- and data-driven approach linking brain-behavior alterations to the transcriptome, we found that MIA timing differentially affects offspring development. Exposure in late gestation leads to subthreshold deficits, whereas exposure in early gestation perturbs brain development mechanisms implicated in neurodevelopmental disorders.
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Affiliation(s)
- Elisa Guma
- Integrated Program in Neuroscience, McGill University, Montreal, Quebec, Canada; Computational Brain Imaging Lab, Cerebral Imaging Center, Douglas Mental Health University Institute, Montreal, Quebec, Canada.
| | - Pedro do Couto Bordignon
- Department of Psychology, McGill University, Montreal, Quebec, Canada; Ludmer Center for Neuroinformatics and Mental Health, Montreal, Quebec, Canada
| | - Gabriel A Devenyi
- Department of Psychiatry, McGill University, Montreal, Quebec, Canada; Computational Brain Imaging Lab, Cerebral Imaging Center, Douglas Mental Health University Institute, Montreal, Quebec, Canada
| | - Daniel Gallino
- Computational Brain Imaging Lab, Cerebral Imaging Center, Douglas Mental Health University Institute, Montreal, Quebec, Canada
| | - Chloe Anastassiadis
- Computational Brain Imaging Lab, Cerebral Imaging Center, Douglas Mental Health University Institute, Montreal, Quebec, Canada; Institute of Medical Science & Collaborative Program in Neuroscience, University of Toronto, Toronto, Ontario, Canada
| | | | - Amadou D Barry
- Departments of Human Genetics and Epidemiology, Biostatistics and Occupational Health, McGill University, Montreal, Quebec, Canada; Ludmer Center for Neuroinformatics and Mental Health, Montreal, Quebec, Canada
| | - Emily Snook
- Computational Brain Imaging Lab, Cerebral Imaging Center, Douglas Mental Health University Institute, Montreal, Quebec, Canada; Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Jurgen Germann
- Computational Brain Imaging Lab, Cerebral Imaging Center, Douglas Mental Health University Institute, Montreal, Quebec, Canada; University Health Network, Toronto, Ontario, Canada
| | - Celia M T Greenwood
- Gerald Bronfman Department of Oncology, McGill University, Montreal, Quebec, Canada; Lady Davis Institute for Medical Research, Jewish General Hospital, McGill University, Montreal, Quebec, Canada; Departments of Human Genetics and Epidemiology, Biostatistics and Occupational Health, McGill University, Montreal, Quebec, Canada; Ludmer Center for Neuroinformatics and Mental Health, Montreal, Quebec, Canada
| | - Bratislav Misic
- Montreal Neurological Institute, McGill University, Montreal, Quebec, Canada
| | - Rosemary C Bagot
- Department of Psychology, McGill University, Montreal, Quebec, Canada; Ludmer Center for Neuroinformatics and Mental Health, Montreal, Quebec, Canada
| | - M Mallar Chakravarty
- Integrated Program in Neuroscience, McGill University, Montreal, Quebec, Canada; Department of Psychiatry, McGill University, Montreal, Quebec, Canada; Department of Biological and Biomedical Engineering, McGill University, Montreal, Quebec, Canada; Computational Brain Imaging Lab, Cerebral Imaging Center, Douglas Mental Health University Institute, Montreal, Quebec, Canada.
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27
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Amgalan A, Andescavage N, Limperopoulos C. Prenatal origins of neuropsychiatric diseases. Acta Paediatr 2021; 110:1741-1749. [PMID: 33475192 DOI: 10.1111/apa.15766] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 01/28/2021] [Accepted: 01/18/2021] [Indexed: 12/18/2022]
Abstract
AIM The main objective is to review the available evidence in the literature for developmental origins of neuropsychiatric diseases and their underlying mechanisms. We also probe emerging cutting-edge prenatal MR imaging tools and their future role in advancing our understanding the prenatal footprints of neuropsychiatric disorders. OBSERVATIONS Both human and animal studies support early intrauterine origins of neuropsychiatric disease, particularly autism spectrum disorders (ASD), attention and hyperactivity disorders, schizophrenia, depression, anxiety and mood disorders. Specific mechanisms of intrauterine injury include infection, inflammation, hypoxia, hypoperfusion, ischaemia polysubstance use/abuse, maternal mental health and placental dysfunction. CONCLUSIONS AND RELEVANCE There is ample evidence to suggest developmental vulnerability of the foetal brain to intrauterine exposures that increases and individual's risk for neuropsychiatric disease, especially the risk of ASD, depression and anxiety. Elucidating the exact timing and mechanisms of injury can be difficult and require novel, non-invasive approaches to the study emerging structural and functional brain development of the foetus. Clinical care should both emphasise maternal health during pregnancy, as well as close, continued monitoring for at risk offspring throughout young adulthood for the early identification and treatment of neuropsychiatric diseases.
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Affiliation(s)
| | - Nickie Andescavage
- Division of Neonatology Children’s National Health System Washington DC USA
- Department of Pediatrics George Washington University School of Medicine Washington DC USA
| | - Catherine Limperopoulos
- Department of Pediatrics George Washington University School of Medicine Washington DC USA
- Division of Diagnostic Imaging & Radiology Children’s National Health System Washington DC USA
- Department of Radiology George Washington University School of Medicine Washington DC USA
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28
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Interrelationships Between Oxidative Stress, Cytokines, and Psychotic Symptoms and Executive Functions in Patients With Chronic Schizophrenia. Psychosom Med 2021; 83:485-491. [PMID: 34080586 DOI: 10.1097/psy.0000000000000931] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
OBJECTIVE Accumulating evidence has demonstrated that the pathophysiology of schizophrenia is involved in various abnormalities in oxidative stress markers and cytokines closely related to synaptic plasticity. However, the interactive effects among key cytokines, oxidative stress, and executive dysfunction and symptoms of schizophrenia have not been investigated yet. METHODS A total of 189 patients with chronic schizophrenia and 60 controls were recruited in the current study. Tumor necrosis factor α (TNF-α), interleukin (IL)-8, IL-6, and IL-2 levels; catalase, glutathione peroxidase, and superoxide dismutase (SOD) activities; and malondialdehyde (MDA) levels were determined in patients and controls. Executive function was evaluated by the Wisconsin card sorting tests, the verbal fluency tests, and the Stroop word-color test. Clinical symptoms were evaluated by the Positive and Negative Syndrome Scale. RESULTS Relative to the controls, the patients had lower activities of SOD and glutathione peroxidase and levels of TNF-α, but higher levels of MDA, IL-8, IL-6, and IL-2 (all p values < .05). A significant negative relationship between SOD activity and IL-8 levels was found only in patients (β = -0.44, p = .008). Furthermore, we found that an interactive effect of low TNF-α level and high MDA level was associated with negative symptoms (β = -0.02, p = .01). Moreover, the interactive effects of IL-8 and MDA or IL-8 and SOD were correlated with executive function only in patients (β = 0.23, p = .02; β = 0.09, p = .03). CONCLUSIONS Our findings suggest that the interrelationships between oxidative stress markers and cytokines occur in schizophrenia patients, which may be the basis of their pathological mechanisms underlying clinical symptoms and cognitive dysfunction.
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29
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Davoli-Ferreira M, Thomson CA, McCoy KD. Microbiota and Microglia Interactions in ASD. Front Immunol 2021; 12:676255. [PMID: 34113350 PMCID: PMC8185464 DOI: 10.3389/fimmu.2021.676255] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Accepted: 05/12/2021] [Indexed: 12/12/2022] Open
Abstract
Autism spectrum disorders (ASD) are serious, highly variable neurodevelopmental disorders, commonly characterized by the manifestation of specific behavioral abnormalities, such as stereotypic behaviors and deficits in social skills, including communication. Although the neurobiological basis for ASD has attracted attention in recent decades, the role of microglial cells, which are the main resident myeloid cell population in the brain, is still controversial and underexplored. Microglia play several fundamental roles in orchestrating brain development and homeostasis. As such, alterations in the intrinsic functions of these cells could be one of the driving forces responsible for the development of various neurodevelopmental disorders, including ASD. Microglia are highly sensitive to environmental cues. Amongst the environmental factors known to influence their intrinsic functions, the gut microbiota has emerged as a central player, controlling both microglial maturation and activation. Strikingly, there is now compelling data suggesting that the intestinal microbiota can play a causative role in driving the behavioural changes associated with ASD. Not only is intestinal dysbiosis commonly reported in ASD patients, but therapies targeting the microbiome can markedly alleviate behavioral symptoms. Here we explore the emerging mechanisms by which altered microglial functions could contribute to several major etiological factors of ASD. We then demonstrate how pre- and postnatal environmental stimuli can modulate microglial cell phenotype and function, underpinning the notion that reciprocal interactions between microglia and intestinal microbes could play a crucial role in ASD aetiology.
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Affiliation(s)
- Marcela Davoli-Ferreira
- Department of Physiology and Pharmacology, Snyder Institute of Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Carolyn A Thomson
- Department of Physiology and Pharmacology, Snyder Institute of Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Kathy D McCoy
- Department of Physiology and Pharmacology, Snyder Institute of Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
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30
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Bhat A, Parr T, Ramstead M, Friston K. Immunoceptive inference: why are psychiatric disorders and immune responses intertwined? BIOLOGY & PHILOSOPHY 2021; 36:27. [PMID: 33948044 PMCID: PMC8085803 DOI: 10.1007/s10539-021-09801-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2020] [Accepted: 03/27/2021] [Indexed: 06/03/2023]
Abstract
There is a steadily growing literature on the role of the immune system in psychiatric disorders. So far, these advances have largely taken the form of correlations between specific aspects of inflammation (e.g. blood plasma levels of inflammatory markers, genetic mutations in immune pathways, viral or bacterial infection) with the development of neuropsychiatric conditions such as autism, bipolar disorder, schizophrenia and depression. A fundamental question remains open: why are psychiatric disorders and immune responses intertwined? To address this would require a step back from a historical mind-body dualism that has created such a dichotomy. We propose three contributions of active inference when addressing this question: translation, unification, and simulation. To illustrate these contributions, we consider the following questions. Is there an immunological analogue of sensory attenuation? Is there a common generative model that the brain and immune system jointly optimise? Can the immune response and psychiatric illness both be explained in terms of self-organising systems responding to threatening stimuli in their external environment, whether those stimuli happen to be pathogens, predators, or people? Does false inference at an immunological level alter the message passing at a psychological level (or vice versa) through a principled exchange between the two systems?
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Affiliation(s)
- Anjali Bhat
- Wellcome Centre for Human Neuroimaging, London, UK
- Division of Psychiatry, University College London, London, UK
| | - Thomas Parr
- Wellcome Centre for Human Neuroimaging, London, UK
| | - Maxwell Ramstead
- Wellcome Centre for Human Neuroimaging, London, UK
- Division of Social and Transcultural Psychiatry, Department of Psychiatry, McGill University, Montreal, Canada
- Spatial Web Foundation, Los Angeles, CA USA
| | - Karl Friston
- Wellcome Centre for Human Neuroimaging, London, UK
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Edemann-Callesen H, Winter C, Hadar R. Using cortical non-invasive neuromodulation as a potential preventive treatment in schizophrenia - A review. Brain Stimul 2021; 14:643-651. [PMID: 33819680 DOI: 10.1016/j.brs.2021.03.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2020] [Revised: 02/11/2021] [Accepted: 03/23/2021] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND Evidence suggests that schizophrenia constitutes a neurodevelopmental disorder, characterized by a gradual emergence of behavioral and neurobiological abnormalities over time. Therefore, applying early interventions to prevent later manifestation of symptoms is appealing. OBJECTIVE This review focuses on the use of cortical neuromodulation in schizophrenia and its potential as a preventive treatment approach. We present clinical and preclinical findings investigating the use of neuromodulation in schizophrenia, including the current research focusing on cortical non-invasive stimulation and its possibility as a future preventive treatment. METHODS We performed a search in Medline (PubMed) in September 2020 using a combination of relevant medical subject headings (MeSH) and text words. The search included human and preclinical trials as well as existing systematic reviews and meta-analysis. There were no restrictions on language or the date of publication. RESULTS Neurodevelopmental animal models may be used to investigate how the disease progresses and thus which brain areas ideally should be targeted at a given time point. Here, abnormalities of the prefrontal cortex have been often identified as an early and persistent impairment in schizophrenia. Currently there is insufficient evidence to either support or refute the use of neuromodulation to the cortex in adult patients with already manifested symptoms. However, preclinical results show that early non-invasive neuromodulation to the prefrontal cortex of adolescent animals, sufficiently prevents later psychosis-relevant abnormalities in adulthood. This points to the promising potential of cortical non-invasive neuromodulation as a preventive treatment when applied early in the course of the disease. CONCLUSION Preclinical translational-oriented findings indicate, that neuromodulation to cortical areas offers the possibility of targeting early neuropathology and through this diminish the progression of a later schizophrenic profile. Further studies are needed to investigate whether such early cortical stimulation may serve as a future preventive treatment in schizophrenia.
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Affiliation(s)
- Henriette Edemann-Callesen
- Department of Psychiatry and Psychotherapy, Charité Campus Mitte, Charité -Universitätsmedizin, Berlin, Germany
| | - Christine Winter
- Department of Psychiatry and Psychotherapy, Charité Campus Mitte, Charité -Universitätsmedizin, Berlin, Germany
| | - Ravit Hadar
- Department of Psychiatry and Psychotherapy, Charité Campus Mitte, Charité -Universitätsmedizin, Berlin, Germany.
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Lyall K, Ames JL, Pearl M, Traglia M, Weiss LA, Windham GC, Kharrazi M, Yoshida CK, Yolken R, Volk HE, Ashwood P, Van de Water J, Croen LA. A profile and review of findings from the Early Markers for Autism study: unique contributions from a population-based case-control study in California. Mol Autism 2021; 12:24. [PMID: 33736683 PMCID: PMC7977191 DOI: 10.1186/s13229-021-00429-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 02/23/2021] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND The Early Markers for Autism (EMA) study is a population-based case-control study designed to learn more about early biologic processes involved in ASD. METHODS Participants were drawn from Southern California births from 2000 to 2003 with archived prenatal and neonatal screening specimens. Across two phases, children with ASD (n = 629) and intellectual disability without ASD (ID, n = 230) were ascertained from the California Department of Developmental Services (DDS), with diagnoses confirmed according to DSM-IV-TR criteria based on expert clinical review of abstracted records. General population controls (GP, n = 599) were randomly sampled from birth certificate files and matched to ASD cases by sex, birth month and year after excluding individuals with DDS records. EMA has published over 20 papers examining immune markers, endogenous hormones, environmental chemicals, and genetic factors in association with ASD and ID. This review summarizes the results across these studies, as well as the EMA study design and future directions. RESULTS EMA enabled several key contributions to the literature, including the examination of biomarker levels in biospecimens prospectively collected during critical windows of neurodevelopment. Key findings from EMA include demonstration of elevated cytokine and chemokine levels in maternal mid-pregnancy serum samples in association with ASD, as well as aberrations in other immune marker levels; suggestions of increased odds of ASD with prenatal exposure to certain endocrine disrupting chemicals, though not in mixture analyses; and demonstration of maternal and fetal genetic influence on prenatal chemical, and maternal and neonatal immune marker and vitamin D levels. We also observed an overall lack of association with ASD and measured maternal and neonatal vitamin D, mercury, and brain-derived neurotrophic factor (BDNF) levels. LIMITATIONS Covariate and outcome data were limited to information in Vital Statistics and DDS records. As a study based in Southern California, generalizability for certain environmental exposures may be reduced. CONCLUSIONS Results across EMA studies support the importance of the prenatal and neonatal periods in ASD etiology, and provide evidence for the role of the maternal immune response during pregnancy. Future directions for EMA, and the field of ASD in general, include interrogation of mechanistic pathways and examination of combined effects of exposures.
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Affiliation(s)
- Kristen Lyall
- A.J. Drexel Autism Institute, Drexel University, Suite 560, 3020 Market St, Philadelphia, PA, 19104, USA.
| | - Jennifer L Ames
- Division of Research, Kaiser Permanente Northern California, Oakland, CA, USA
| | - Michelle Pearl
- Environmental Health Investigations Branch, California Department of Public Health, Richmond, CA, USA
| | - Michela Traglia
- University of California, San Francisco, San Francisco, CA, USA
| | - Lauren A Weiss
- University of California, San Francisco, San Francisco, CA, USA
| | - Gayle C Windham
- Environmental Health Investigations Branch, California Department of Public Health, Richmond, CA, USA
| | - Martin Kharrazi
- Environmental Health Investigations Branch, California Department of Public Health, Richmond, CA, USA
| | - Cathleen K Yoshida
- Division of Research, Kaiser Permanente Northern California, Oakland, CA, USA
| | - Robert Yolken
- School of Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - Heather E Volk
- Department of Mental Health, Johns Hopkins University, Baltimore, MD, USA
| | - Paul Ashwood
- UC Davis MIND Institute, University of California, Davis, Davis, CA, USA
| | - Judy Van de Water
- UC Davis MIND Institute, University of California, Davis, Davis, CA, USA
| | - Lisa A Croen
- Division of Research, Kaiser Permanente Northern California, Oakland, CA, USA
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33
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Galera C, Barbosa S, Collet O, Khalfallah O, Aouizerate B, Sutter-Dalley AL, Koehl M, Capuron L, Van der Waerden J, Melchior M, Côté S, Heude B, Glaichenhaus N, Davidovic L. Cord Serum Cytokines at Birth and Children's Anxiety-Depression Trajectories From 3 to 8 Years: The EDEN Mother-Child Cohort. Biol Psychiatry 2021; 89:541-549. [PMID: 33349450 DOI: 10.1016/j.biopsych.2020.10.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 09/23/2020] [Accepted: 10/12/2020] [Indexed: 12/23/2022]
Abstract
BACKGROUND Recent research suggests that immune dysregulation in pregnancy could be a risk factor for anxiety and depression symptoms in offspring. Whereas animal studies have demonstrated the importance of the link between perinatal cytokines and abnormal behaviors in offspring, human epidemiological studies in this area remain limited. The objectives of the study were to describe the network of cord serum cytokines at birth and test whether they are associated with subsequent anxiety and depression symptom trajectories in offspring. METHODS We used data and biological samples from 871 mother-child pairs followed up from pregnancy to 8 years of age and participating in the French mother-child cohort EDEN (a study on the pre- and early postnatal determinants of child health and development). Cord serum cytokines were measured at birth. Children's symptoms of anxiety and depression were assessed with the emotional difficulties subscore of the Strength and Difficulties Questionnaire at ages 3, 5, and 8 years, from which trajectories of anxiety-depression symptoms were derived. RESULTS Results showed a significant association between cord serum interleukin-7 at birth and the trajectories of children's anxiety-depression symptoms between ages 3 to 8 years (adjusted odds ratio, 0.73; 95% confidence interval, 0.57-0.93). The associations considered relevant confounders, including prenatal maternal depressive symptoms. CONCLUSIONS Early immune changes may contribute to subsequent anxiety and depression symptoms in childhood. Beyond the understanding of mechanisms underlying the occurrence of emotional difficulties in children, our findings open avenues for future research in human and animals.
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Affiliation(s)
- Cédric Galera
- Departments of Public Health and Neurocampus, University of Bordeaux, Bordeaux, France; Institut National de la Santé et de la Recherche Médicale, Bordeaux Population Health Center, Bordeaux, France; Centre Hospitalier Perrens, Bordeaux, France; Research Unit on Children's Psychosocial Maladjustment, Montreal, Quebec, Canada.
| | - Susana Barbosa
- Université Côte d'Azur, Nice, France; Centre National de la Recherche Scientifique, Institut de Pharmacologie Moléculaire et Cellulaire, Valbonne, France
| | - Ophélie Collet
- Departments of Public Health and Neurocampus, University of Bordeaux, Bordeaux, France; Research Unit on Children's Psychosocial Maladjustment, Montreal, Quebec, Canada
| | - Olfa Khalfallah
- Université Côte d'Azur, Nice, France; Centre National de la Recherche Scientifique, Institut de Pharmacologie Moléculaire et Cellulaire, Valbonne, France
| | - Bruno Aouizerate
- Departments of Public Health and Neurocampus, University of Bordeaux, Bordeaux, France; Centre Hospitalier Perrens, Bordeaux, France; Bordeaux INP, NutriNeuro UMR 1286, Bordeaux, France
| | - Anne-Laure Sutter-Dalley
- Institut National de la Santé et de la Recherche Médicale, Bordeaux Population Health Center, Bordeaux, France; Centre Hospitalier Perrens, Bordeaux, France
| | - Muriel Koehl
- Departments of Public Health and Neurocampus, University of Bordeaux, Bordeaux, France; Institut national de recherche pour l'agriculture, l'alimentation et l'environnement, Neurocentre Magendie U1215, and Institut National de la Santé et de la Recherche Médicale, Bordeaux, France
| | - Lucile Capuron
- Departments of Public Health and Neurocampus, University of Bordeaux, Bordeaux, France; Bordeaux INP, NutriNeuro UMR 1286, Bordeaux, France
| | - Judith Van der Waerden
- Institut Pierre Louis d'Epidémiologie et de Santé Publique, Sorbonne Université, Paris, France
| | - Maria Melchior
- Institut Pierre Louis d'Epidémiologie et de Santé Publique, Sorbonne Université, Paris, France
| | - Sylvana Côté
- Departments of Public Health and Neurocampus, University of Bordeaux, Bordeaux, France; Institut National de la Santé et de la Recherche Médicale, Bordeaux Population Health Center, Bordeaux, France; Research Unit on Children's Psychosocial Maladjustment, Montreal, Quebec, Canada; Department of Social and Preventive Medicine, University of Montreal, Montreal, Quebec, Canada
| | - Barbara Heude
- Institut National de la Santé et de la Recherche Médicale, INSERM, UMR1153 Epidemiology and Biostatistics Sorbonne Paris Cité Center, ORCHAD Team, Paris, France; Institut National de la Santé et de la Recherche Médicale, Paris, France; Paris University, Paris, France
| | - Nicolas Glaichenhaus
- Université Côte d'Azur, Nice, France; Centre National de la Recherche Scientifique, Institut de Pharmacologie Moléculaire et Cellulaire, Valbonne, France
| | - Laetitia Davidovic
- Université Côte d'Azur, Nice, France; Centre National de la Recherche Scientifique, Institut de Pharmacologie Moléculaire et Cellulaire, Valbonne, France
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Altered circadian rhythms in a mouse model of neurodevelopmental disorders based on prenatal maternal immune activation. Brain Behav Immun 2021; 93:119-131. [PMID: 33412254 DOI: 10.1016/j.bbi.2020.12.030] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Revised: 12/23/2020] [Accepted: 12/28/2020] [Indexed: 12/21/2022] Open
Abstract
Individuals with neurodevelopmental disorders, such as schizophrenia and autism spectrum disorder, exhibit various sleep and circadian rhythm disturbances that often persist and worsen throughout the lifespan. To study the interaction between circadian rhythm disruption and neurodevelopmental disorders, we utilized a mouse model based on prenatal maternal immune activation (MIA). We hypothesized that MIA exposure would lead to impaired circadian locomotor activity rhythms in adult mouse offspring. We induced MIA by injecting pregnant dams with polyinosinic:polycytidylic acid (poly IC) at embryonic day 9.5, then aged resulting offspring to adulthood. We first confirmed that poly IC injection in pregnant dams elevated plasma levels of pro- and anti-inflammatory cytokines and chemokines. We then placed adult offspring in running wheels and subjected them to various lighting conditions. Overall, poly IC-exposed male offspring exhibited altered locomotor activity rhythms, reminiscent of individuals with neurodevelopmental disorders. In particular, we report increased (subjective) day activity across 3 different lighting conditions: 12 h of light, 12 h of dark (12:12LD), constant darkness (DD) and constant light. Further data analysis indicated that this was driven by increased activity in the beginning of the (subjective) day in 12:12LD and DD, and at the end of the day in 12:12LD. This effect was sex-dependent, as in utero poly IC exposure led overall to much milder alterations in locomotor activity rhythms in female offspring than in male offspring. We also confirmed that the observed behavioral impairments in adult poly IC-exposed offspring were not due to differences in maternal behavior. These data further our understanding of the link between circadian rhythm disruption and neurodevelopmental disorders and may have implications for mitigating risk to the disorders and/or informing the development of circadian-based therapies.
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Leyrolle Q, Decoeur F, Briere G, Amadieu C, Quadros ARAA, Voytyuk I, Lacabanne C, Benmamar-Badel A, Bourel J, Aubert A, Sere A, Chain F, Schwendimann L, Matrot B, Bourgeois T, Grégoire S, Leblanc JG, De Moreno De Leblanc A, Langella P, Fernandes GR, Bretillon L, Joffre C, Uricaru R, Thebault P, Gressens P, Chatel JM, Layé S, Nadjar A. Maternal dietary omega-3 deficiency worsens the deleterious effects of prenatal inflammation on the gut-brain axis in the offspring across lifetime. Neuropsychopharmacology 2021; 46:579-602. [PMID: 32781459 PMCID: PMC8026603 DOI: 10.1038/s41386-020-00793-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 07/16/2020] [Accepted: 07/27/2020] [Indexed: 12/18/2022]
Abstract
Maternal immune activation (MIA) and poor maternal nutritional habits are risk factors for the occurrence of neurodevelopmental disorders (NDD). Human studies show the deleterious impact of prenatal inflammation and low n-3 polyunsaturated fatty acid (PUFA) intake on neurodevelopment with long-lasting consequences on behavior. However, the mechanisms linking maternal nutritional status to MIA are still unclear, despite their relevance to the etiology of NDD. We demonstrate here that low maternal n-3 PUFA intake worsens MIA-induced early gut dysfunction, including modification of gut microbiota composition and higher local inflammatory reactivity. These deficits correlate with alterations of microglia-neuron crosstalk pathways and have long-lasting effects, both at transcriptional and behavioral levels. This work highlights the perinatal period as a critical time window, especially regarding the role of the gut-brain axis in neurodevelopment, elucidating the link between MIA, poor nutritional habits, and NDD.
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Affiliation(s)
- Q. Leyrolle
- grid.488493.a0000 0004 0383 684XUniversity Bordeaux, INRAE, Bordeaux INP, NutriNeuro, UMR 1286, F-33000 Bordeaux, France ,Université de Paris, NeuroDiderot, Inserm, F-75019 Paris, France
| | - F. Decoeur
- grid.488493.a0000 0004 0383 684XUniversity Bordeaux, INRAE, Bordeaux INP, NutriNeuro, UMR 1286, F-33000 Bordeaux, France
| | - G. Briere
- grid.488493.a0000 0004 0383 684XUniversity Bordeaux, INRAE, Bordeaux INP, NutriNeuro, UMR 1286, F-33000 Bordeaux, France ,grid.503269.b0000 0001 2289 8198CNRS, Bordeaux INP, LaBRI, UMR 5800, F-33400 Talence, France
| | - C. Amadieu
- grid.488493.a0000 0004 0383 684XUniversity Bordeaux, INRAE, Bordeaux INP, NutriNeuro, UMR 1286, F-33000 Bordeaux, France
| | - A. R. A. A. Quadros
- grid.488493.a0000 0004 0383 684XUniversity Bordeaux, INRAE, Bordeaux INP, NutriNeuro, UMR 1286, F-33000 Bordeaux, France
| | - I. Voytyuk
- grid.488493.a0000 0004 0383 684XUniversity Bordeaux, INRAE, Bordeaux INP, NutriNeuro, UMR 1286, F-33000 Bordeaux, France
| | - C. Lacabanne
- grid.488493.a0000 0004 0383 684XUniversity Bordeaux, INRAE, Bordeaux INP, NutriNeuro, UMR 1286, F-33000 Bordeaux, France
| | - A. Benmamar-Badel
- grid.488493.a0000 0004 0383 684XUniversity Bordeaux, INRAE, Bordeaux INP, NutriNeuro, UMR 1286, F-33000 Bordeaux, France
| | - J. Bourel
- grid.488493.a0000 0004 0383 684XUniversity Bordeaux, INRAE, Bordeaux INP, NutriNeuro, UMR 1286, F-33000 Bordeaux, France
| | - A. Aubert
- grid.488493.a0000 0004 0383 684XUniversity Bordeaux, INRAE, Bordeaux INP, NutriNeuro, UMR 1286, F-33000 Bordeaux, France
| | - A. Sere
- grid.488493.a0000 0004 0383 684XUniversity Bordeaux, INRAE, Bordeaux INP, NutriNeuro, UMR 1286, F-33000 Bordeaux, France
| | - F. Chain
- grid.460789.40000 0004 4910 6535Micalis Institute, INRAE, AgroParisTech, Université Paris-Saclay, 78350 Jouy-en-Josas, France
| | - L. Schwendimann
- Université de Paris, NeuroDiderot, Inserm, F-75019 Paris, France
| | - B. Matrot
- Université de Paris, NeuroDiderot, Inserm, F-75019 Paris, France
| | - T. Bourgeois
- Université de Paris, NeuroDiderot, Inserm, F-75019 Paris, France
| | - S. Grégoire
- grid.462804.c0000 0004 0387 2525Centre des Sciences du Goût et de l’Alimentation, AgroSup Dijon, CNRS, INRAE, Université Bourgogne Franche-Comté, Dijon, France
| | - J. G. Leblanc
- CERELA-CONICET, San Miguel de Tucuman, 4000 Tucuman, Argentina
| | | | - P. Langella
- grid.460789.40000 0004 4910 6535Micalis Institute, INRAE, AgroParisTech, Université Paris-Saclay, 78350 Jouy-en-Josas, France
| | - G. R. Fernandes
- Rene Rachou Institute – Oswaldo Cruz Foundation, Belo Horizonte, MG Brazil
| | - L. Bretillon
- grid.462804.c0000 0004 0387 2525Centre des Sciences du Goût et de l’Alimentation, AgroSup Dijon, CNRS, INRAE, Université Bourgogne Franche-Comté, Dijon, France
| | - C. Joffre
- grid.488493.a0000 0004 0383 684XUniversity Bordeaux, INRAE, Bordeaux INP, NutriNeuro, UMR 1286, F-33000 Bordeaux, France
| | - R. Uricaru
- grid.503269.b0000 0001 2289 8198CNRS, Bordeaux INP, LaBRI, UMR 5800, F-33400 Talence, France
| | - P. Thebault
- grid.503269.b0000 0001 2289 8198CNRS, Bordeaux INP, LaBRI, UMR 5800, F-33400 Talence, France
| | - P. Gressens
- Université de Paris, NeuroDiderot, Inserm, F-75019 Paris, France ,grid.13097.3c0000 0001 2322 6764Centre for the Developing Brain, Department of Division of Imaging Sciences and Biomedical Engineering, King’s College London, King’s Health Partners, St. Thomas’ Hospital, London, SE1 7EH UK
| | - J. M. Chatel
- grid.460789.40000 0004 4910 6535Micalis Institute, INRAE, AgroParisTech, Université Paris-Saclay, 78350 Jouy-en-Josas, France
| | - S. Layé
- grid.488493.a0000 0004 0383 684XUniversity Bordeaux, INRAE, Bordeaux INP, NutriNeuro, UMR 1286, F-33000 Bordeaux, France
| | - A. Nadjar
- grid.488493.a0000 0004 0383 684XUniversity Bordeaux, INRAE, Bordeaux INP, NutriNeuro, UMR 1286, F-33000 Bordeaux, France
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Nath M, Wong TP, Srivastava LK. Neurodevelopmental insights into circuit dysconnectivity in schizophrenia. Prog Neuropsychopharmacol Biol Psychiatry 2021; 104:110047. [PMID: 32721441 DOI: 10.1016/j.pnpbp.2020.110047] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Revised: 07/01/2020] [Accepted: 07/21/2020] [Indexed: 11/30/2022]
Abstract
Schizophrenia is increasingly being recognized as a disorder of brain circuits of developmental origin. Animal models, however, have been technically limited in exploring the effects of early developmental circuit abnormalities on the maturation of the brain and associated behavioural outputs. This review discusses evidence of the developmental emergence of circuit abnormalities in schizophrenia, followed by a critical assessment on how animal models need to be adapted through optimized tools in order to spatially and temporally manipulate early developmental events, thereby providing insight into the causal contribution of developmental perturbations to schizophrenia.
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Affiliation(s)
- Moushumi Nath
- Douglas Mental Health University Institute, Department of Psychiatry, McGill University, Canada.
| | - Tak Pan Wong
- Douglas Mental Health University Institute, Department of Psychiatry, McGill University, Canada
| | - Lalit K Srivastava
- Douglas Mental Health University Institute, Department of Psychiatry, McGill University, Canada
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37
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Qiu C, Lin JC, Shi JM, Chow T, Desai VN, Nguyen VT, Riewerts RJ, Feldman RK, Segal S, Xiang AH. Association Between Epidural Analgesia During Labor and Risk of Autism Spectrum Disorders in Offspring. JAMA Pediatr 2020; 174:1168-1175. [PMID: 33044486 PMCID: PMC7551212 DOI: 10.1001/jamapediatrics.2020.3231] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
IMPORTANCE Although the safety of labor epidural analgesia (LEA) for neonates has been well documented, the long-term health effects of LEA on offspring remain to be investigated. OBJECTIVE To assess the association between maternal LEA exposure and risk of autism spectrum disorders (ASDs) in offspring. DESIGN, SETTING, AND PARTICIPANTS Data for this retrospective longitudinal birth cohort study were derived from electronic medical records from a population-based clinical birth cohort. A total of 147 895 singleton children delivered vaginally between January 1, 2008, and December 31, 2015, in a single integrated health care system were included. Children were followed up from the age of 1 year until the first date of the following occurrences: clinical diagnosis of ASD, last date of health plan enrollment, death, or the study end date of December 31, 2018. EXPOSURES Use and duration of LEA. MAIN OUTCOMES AND MEASURES The main outcome was clinical diagnosis of ASD. Cox proportional hazards regression analysis was used to estimate the hazard ratio (HR) of ASD associated with LEA exposure. RESULTS Among the cohort of 147 895 singleton children (74 425 boys [50.3%]; mean [SD] gestational age at delivery, 38.9 [1.5] weeks), 109 719 (74.2%) were exposed to maternal LEA. Fever during labor was observed in 13 055 mothers (11.9%) in the LEA group and 510 of 38 176 mothers (1.3%) in the non-LEA group. Autism spectrum disorders were diagnosed in 2039 children (1.9%) in the LEA group and 485 children (1.3%) in the non-LEA group. After adjusting for potential confounders, including birth year, medical center, maternal age at delivery, parity, race/ethnicity, educational level, household income, history of comorbidity, diabetes during pregnancy, smoking during pregnancy, preeclampsia or eclampsia, prepregnancy body mass index, gestational weight gain, gestational age at delivery, and birth weight, the HR associated with LEA vs non-LEA exposure was 1.37 (95% CI, 1.23-1.53). Relative to the unexposed group, the adjusted HR associated with LEA exposure of less than 4 hours was 1.33 (95% CI, 1.17-1.53), with LEA exposure of 4 to 8 hours was 1.35 (95% CI, 1.20-1.53), and with LEA exposure of more than 8 hours was 1.46 (95% CI, 1.27-1.69). Within the LEA group, there was a significant trend of ASD risk associated with increasing duration of LEA exposure after adjusting for covariates (HR for linear trend, 1.05 [95% CI, 1.01-1.09] per 4 hours). Adding fever to the model did not change the HR estimate associated with LEA exposure (adjusted HR for LEA vs non-LEA, 1.37 [95% CI, 1.22-1.53]). CONCLUSIONS AND RELEVANCE This study suggests that maternal LEA may be associated with increased ASD risk in children. The risk appears to not be directly associated with epidural-related maternal fever.
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Affiliation(s)
- Chunyuan Qiu
- Department of Anesthesiology, Kaiser Permanente Baldwin Park Medical Center, Baldwin Park, California
| | - Jane C. Lin
- Department of Research & Evaluation, Kaiser Permanente Southern California, Pasadena
| | - Jiaxiao M. Shi
- Department of Research & Evaluation, Kaiser Permanente Southern California, Pasadena
| | - Ting Chow
- Department of Research & Evaluation, Kaiser Permanente Southern California, Pasadena
| | - Vimal N. Desai
- Department of Anesthesiology, Kaiser Permanente Baldwin Park Medical Center, Baldwin Park, California
| | - Vu T. Nguyen
- Department of Anesthesiology, Kaiser Permanente Baldwin Park Medical Center, Baldwin Park, California,Department of Internal Medicine, Kaiser Permanente Baldwin Park Medical Center, Baldwin Park, California
| | - Robert J. Riewerts
- Department of Pediatrics, Kaiser Permanente Baldwin Park Medical Center, Baldwin Park, California
| | - R. Klara Feldman
- Department of Obstetrics & Gynecology, Kaiser Permanente Baldwin Park Medical Center, Baldwin Park, California
| | - Scott Segal
- Department of Anesthesiology, Wake Forest School of Medicine, Winston-Salem, North Carolina
| | - Anny H. Xiang
- Department of Research & Evaluation, Kaiser Permanente Southern California, Pasadena
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Reddaway J, Brydges NM. Enduring neuroimmunological consequences of developmental experiences: From vulnerability to resilience. Mol Cell Neurosci 2020; 109:103567. [PMID: 33068720 PMCID: PMC7556274 DOI: 10.1016/j.mcn.2020.103567] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Revised: 09/14/2020] [Accepted: 10/12/2020] [Indexed: 12/14/2022] Open
Abstract
The immune system is crucial for normal neuronal development and function (neuroimmune system). Both immune and neuronal systems undergo significant postnatal development and are sensitive to developmental programming by environmental experiences. Negative experiences from infection to psychological stress at a range of different time points (in utero to adolescence) can permanently alter the function of the neuroimmune system: given its prominent role in normal brain development and function this dysregulation may increase vulnerability to psychiatric illness. In contrast, positive experiences such as exercise and environmental enrichment are protective and can promote resilience, even restoring the detrimental effects of negative experiences on the neuroimmune system. This suggests the neuroimmune system is a viable therapeutic target for treatment and prevention of psychiatric illnesses, especially those related to stress. In this review we will summarise the main cells, molecules and functions of the immune system in general and with specific reference to central nervous system development and function. We will then discuss the effects of negative and positive environmental experiences, especially during development, in programming the long-term functioning of the neuroimmune system. Finally, we will review the sparse but growing literature on sex differences in neuroimmune development and response to environmental experiences. The immune system is essential for development and function of the central nervous system (neuroimmune system) Environmental experiences can permanently alter neuroimmune function and associated brain development Altered neuroimmune function following negative developmental experiences may play a role in psychiatric illnesses Positive experiences can promote resilience and rescue the effects of negative experiences on the neuroimmune system The neuroimmune system is therefore a viable therapeutic target for preventing and treating psychiatric illnesses
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Affiliation(s)
- Jack Reddaway
- Neuroscience and Mental Health Research Institute, Cardiff University, Hadyn Ellis Building, Maindy Road, Cardiff CF24 4HQ, UK
| | - Nichola M Brydges
- Neuroscience and Mental Health Research Institute, Cardiff University, Hadyn Ellis Building, Maindy Road, Cardiff CF24 4HQ, UK.
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Brydges NM, Reddaway J. Neuroimmunological effects of early life experiences. Brain Neurosci Adv 2020; 4:2398212820953706. [PMID: 33015371 PMCID: PMC7513403 DOI: 10.1177/2398212820953706] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Accepted: 08/07/2020] [Indexed: 12/18/2022] Open
Abstract
Exposure to adverse experiences during development increases the risk of psychiatric illness later in life. Growing evidence suggests a role for the neuroimmune system in this relationship. There is now substantial evidence that the immune system is critical for normal brain development and behaviour, and responds to environmental perturbations experienced early in life. Severe or chronic stress results in dysregulated neuroimmune function, concomitant with abnormal brain morphology and function. Positive experiences including environmental enrichment and exercise exert the opposite effect, promoting normal brain and immune function even in the face of early life stress. The neuroimmune system may therefore provide a viable target for prevention and treatment of psychiatric illness. This review will briefly summarise the neuroimmune system in brain development and function, and review the effects of stress and positive environmental experiences during development on neuroimmune function. There are also significant sex differences in how the neuroimmune system responds to environmental experiences early in life, which we will briefly review.
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Affiliation(s)
- Nichola M Brydges
- Neuroscience and Mental Health Research Institute, Cardiff University, Cardiff, UK
| | - Jack Reddaway
- Neuroscience and Mental Health Research Institute, Cardiff University, Cardiff, UK
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40
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Wilson HA, Creighton C, Scharfman H, Choleris E, MacLusky NJ. Endocrine Insights into the Pathophysiology of Autism Spectrum Disorder. Neuroscientist 2020; 27:650-667. [PMID: 32912048 DOI: 10.1177/1073858420952046] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Autism spectrum disorder (ASD) is a class of neurodevelopmental disorders that affects males more frequently than females. Numerous genetic and environmental risk factors have been suggested to contribute to the development of ASD. However, no one factor can adequately explain either the frequency of the disorder or the male bias in its prevalence. Gonadal, thyroid, and glucocorticoid hormones all contribute to normal development of the brain, hence perturbations in either their patterns of secretion or their actions may constitute risk factors for ASD. Environmental factors may contribute to ASD etiology by influencing the development of neuroendocrine and neuroimmune systems during early life. Emerging evidence suggests that the placenta may be particularly important as a mediator of the actions of environmental and endocrine risk factors on the developing brain, with the male being particularly sensitive to these effects. Understanding how various risk factors integrate to influence neural development may facilitate a clearer understanding of the etiology of ASD.
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Affiliation(s)
- Hayley A Wilson
- Department of Biomedical Sciences, University of Guelph, Guelph, Ontario, Canada.,Department of Integrative Biology, University of Guelph, Guelph, Ontario, Canada
| | - Carolyn Creighton
- Department of Biomedical Sciences, University of Guelph, Guelph, Ontario, Canada
| | - Helen Scharfman
- Departments of Child & Adolescent Psychiatry, Neuroscience & Physiology, and Psychiatry, New York University Langone Health, New York, NY, USA.,Center for Dementia Research, The Nathan Kline Institute for Psychiatric Research, Orangeburg, NY, USA
| | - Elena Choleris
- Department of Psychology, University of Guelph, Guelph, Ontario, Canada
| | - Neil J MacLusky
- Department of Biomedical Sciences, University of Guelph, Guelph, Ontario, Canada
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41
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Dabbah-Assadi F, Khatib N, Ginsberg Y, Weiner Z, Shamir A, Beloosesky R. Short-Term Effect of MgSO 4 on the Expression of NRG-ErbB, Dopamine, GABA, and Glutamate Systems in the Fetal Rat Brain. J Mol Neurosci 2020; 71:446-454. [PMID: 32691278 DOI: 10.1007/s12031-020-01665-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Accepted: 07/08/2020] [Indexed: 12/16/2022]
Abstract
MgSO4 has been used for the past two decades as neuroprotective treatment in a variety of preterm conditions. Despite the putative advantages of MgSO4 as a neuroprotective agent in the preterm brain, the short- and long-term molecular function of MgSO4 as a neuroprotective agent has not been fully elucidated. Neuregulin (NRG1)-ErbB4 signaling plays a critical role in embryonic brain development, in the biology of dopaminergic, GABAergic, and glutamatergic systems. We hypothesize that this pathway may be associated with the neuroprotective role of MgSO4. The current study aims to investigate the ability of MgSO4 to modulate the normal developing expression pattern of selected genes related to the NRG1-ErbB, dopaminergic, GABAergic, and glutamatergic systems. We demonstrate that overall short-term treatment of dam rats with MgSO4 affects the expression of fetal brain NRG1, NRG3, ErbB4, GAD67, tyrosine hydroxylase (TH), dopamine D2 and D1 receptors, GluN1, and GluN2B. More specifically, the administration of MgSO4 alters the expression of NRG-ErbB, GAD67, TH, and D2R at early gestation day 16 (GD16) regardless of the activation of the maternal immune system by lipopolysaccharide (LPS). Our data suggest that MgSO4 treatment may affect the expression of major neuronal systems and pathways mostly at an early gestation day. These changes might be an initial clue (foundation stone) in the molecular mechanism that underlies the beneficial effect of MgSO4 as a neuroprotective agent for the developmental brain.
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Affiliation(s)
- Fadwa Dabbah-Assadi
- Psychobiology Research Laboratory, Mazor Mental Health Center, D.N. Oshrat, 25201, Akko, Israel.,The Ruth and Bruce Rappaport Faculty of Medicine, Technion - Israel Institute of Technology, Haifa, Israel
| | - Nazar Khatib
- Department of Obstetrics and Gynecology, Rambam Medical Center, D.N. Haaleya Hashniya, 3525408, Haifa, Israel
| | - Yuval Ginsberg
- Department of Obstetrics and Gynecology, Rambam Medical Center, D.N. Haaleya Hashniya, 3525408, Haifa, Israel
| | - Ze'ev Weiner
- Department of Obstetrics and Gynecology, Rambam Medical Center, D.N. Haaleya Hashniya, 3525408, Haifa, Israel
| | - Alon Shamir
- Psychobiology Research Laboratory, Mazor Mental Health Center, D.N. Oshrat, 25201, Akko, Israel. .,The Ruth and Bruce Rappaport Faculty of Medicine, Technion - Israel Institute of Technology, Haifa, Israel.
| | - Ron Beloosesky
- The Ruth and Bruce Rappaport Faculty of Medicine, Technion - Israel Institute of Technology, Haifa, Israel. .,Department of Obstetrics and Gynecology, Rambam Medical Center, D.N. Haaleya Hashniya, 3525408, Haifa, Israel.
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42
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Thomason ME. Development of Brain Networks In Utero: Relevance for Common Neural Disorders. Biol Psychiatry 2020; 88:40-50. [PMID: 32305217 PMCID: PMC7808399 DOI: 10.1016/j.biopsych.2020.02.007] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 01/05/2020] [Accepted: 02/05/2020] [Indexed: 01/27/2023]
Abstract
Magnetic resonance imaging, histological, and gene analysis approaches in living and nonliving human fetuses and in prematurely born neonates have provided insight into the staged processes of prenatal brain development. Increased understanding of micro- and macroscale brain network development before birth has spurred interest in understanding the relevance of prenatal brain development to common neurological diseases. Questions abound as to the sensitivity of the intrauterine brain to environmental programming, to windows of plasticity, and to the prenatal origin of disorders of childhood that involve disruptions in large-scale network connectivity. Much of the available literature on human prenatal neural development comes from cross-sectional or case studies that are not able to resolve the longitudinal consequences of individual variation in brain development before birth. This review will 1) detail specific methodologies for studying the human prenatal brain, 2) summarize large-scale human prenatal neural network development, integrating findings from across a variety of experimental approaches, 3) explore the plasticity of the early developing brain as well as potential sex differences in prenatal susceptibility, and 4) evaluate opportunities to link specific prenatal brain developmental processes to the forms of aberrant neural connectivity that underlie common neurological disorders of childhood.
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Affiliation(s)
- Moriah E Thomason
- Department of Child and Adolescent Psychiatry, Department of Population Health, and Neuroscience Institute, New York University Langone Health, New York, New York.
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43
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Haddad FL, Patel SV, Schmid S. Maternal Immune Activation by Poly I:C as a preclinical Model for Neurodevelopmental Disorders: A focus on Autism and Schizophrenia. Neurosci Biobehav Rev 2020; 113:546-567. [PMID: 32320814 DOI: 10.1016/j.neubiorev.2020.04.012] [Citation(s) in RCA: 89] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Revised: 01/28/2020] [Accepted: 04/09/2020] [Indexed: 12/18/2022]
Abstract
Maternal immune activation (MIA) in response to a viral infection during early and mid-gestation has been linked through various epidemiological studies to a higher risk for the child to develop autism or schizophrenia-related symptoms.. This has led to the establishment of the pathogen-free poly I:C-induced MIA animal model for neurodevelopmental disorders, which shows relatively high construct and face validity. Depending on the experimental variables, particularly the timing of poly I:C administration, different behavioural and molecular phenotypes have been described that relate to specific symptoms of neurodevelopmental disorders such as autism spectrum disorder and/or schizophrenia. We here review and summarize epidemiological evidence for the effects of maternal infection and immune activation, as well as major findings in different poly I:C MIA models with a focus on poly I:C exposure timing, behavioural and molecular changes in the offspring, and characteristics of the model that relate it to autism spectrum disorder and schizophrenia.
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Affiliation(s)
- Faraj L Haddad
- Anatomy & Cell Biology, Schulich School of Medicine & Dentistry, The University of Western Ontario, London, ON, Canada.
| | - Salonee V Patel
- Anatomy & Cell Biology, Schulich School of Medicine & Dentistry, The University of Western Ontario, London, ON, Canada.
| | - Susanne Schmid
- Anatomy & Cell Biology, Schulich School of Medicine & Dentistry, The University of Western Ontario, London, ON, Canada.
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44
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Semple BD, Dill LK, O'Brien TJ. Immune Challenges and Seizures: How Do Early Life Insults Influence Epileptogenesis? Front Pharmacol 2020; 11:2. [PMID: 32116690 PMCID: PMC7010861 DOI: 10.3389/fphar.2020.00002] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Accepted: 01/03/2020] [Indexed: 12/16/2022] Open
Abstract
The development of epilepsy, a process known as epileptogenesis, often occurs later in life following a prenatal or early postnatal insult such as cerebral ischemia, stroke, brain trauma, or infection. These insults share common pathophysiological pathways involving innate immune activation including neuroinflammation, which is proposed to play a critical role in epileptogenesis. This review provides a comprehensive overview of the latest preclinical evidence demonstrating that early life immune challenges influence neuronal hyperexcitability and predispose an individual to later life epilepsy. Here, we consider the range of brain insults that may promote the onset of chronic recurrent spontaneous seizures at adulthood, spanning intrauterine insults (e.g. maternal immune activation), perinatal injuries (e.g. hypoxic–ischemic injury, perinatal stroke), and insults sustained during early postnatal life—such as fever-induced febrile seizures, traumatic brain injuries, infections, and environmental stressors. Importantly, all of these insults represent, to some extent, an immune challenge, triggering innate immune activation and implicating both central and systemic inflammation as drivers of epileptogenesis. Increasing evidence suggests that pro-inflammatory cytokines such as interleukin-1 and subsequent signaling pathways are important mediators of seizure onset and recurrence, as well as neuronal network plasticity changes in this context. Our current understanding of how early life immune challenges prime microglia and astrocytes will be explored, as well as how developmental age is a critical determinant of seizure susceptibility. Finally, we will consider the paradoxical phenomenon of preconditioning, whereby these same insults may conversely provide neuroprotection. Together, an improved appreciation of the neuroinflammatory mechanisms underlying the long-term epilepsy risk following early life insults may provide insight into opportunities to develop novel immunological anti-epileptogenic therapeutic strategies.
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Affiliation(s)
- Bridgette D Semple
- Department of Neuroscience, Central Clinical School, Monash University, Melbourne, VIC, Australia.,Department of Medicine, Royal Melbourne Hospital, The University of Melbourne, Parkville, VIC, Australia.,Department of Neurology, Alfred Health, Melbourne, VIC, Australia
| | - Larissa K Dill
- Department of Neuroscience, Central Clinical School, Monash University, Melbourne, VIC, Australia.,Department of Neurology, Alfred Health, Melbourne, VIC, Australia
| | - Terence J O'Brien
- Department of Neuroscience, Central Clinical School, Monash University, Melbourne, VIC, Australia.,Department of Medicine, Royal Melbourne Hospital, The University of Melbourne, Parkville, VIC, Australia.,Department of Neurology, Alfred Health, Melbourne, VIC, Australia
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45
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Knutson AO, Watters JJ. All roads lead to inflammation: Is maternal immune activation a common culprit behind environmental factors impacting offspring neural control of breathing? Respir Physiol Neurobiol 2019; 274:103361. [PMID: 31874263 DOI: 10.1016/j.resp.2019.103361] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 12/14/2019] [Accepted: 12/19/2019] [Indexed: 12/12/2022]
Abstract
Despite numerous studies investigating how prenatal exposures impact the developing brain, there remains very little known about how these in utero exposures impact the life-sustaining function of breathing. While some exposures such as alcohol and drugs of abuse are well-known to alter respiratory function, few studies have evaluated other common maternal environmental stimuli, such as maternal infection, inhalation of diesel exhaust particles prevalent in urban areas, or obstructive sleep apnea during pregnancy, just to name a few. The goals of this review article are thus to: 1) highlight data on gestational exposures that impair respiratory function, 2) discuss what is known about the potential role of inflammation in the effects of these maternal exposures, and 3) identify less studied but potential in utero exposures that could negatively impact CNS regions important in respiratory motor control, perhaps by impacting maternal or fetal inflammation. We highlight gaps in knowledge, summarize evidence related to the possible contributions of inflammation, and discuss the need for further studies of life-long offspring respiratory function both at baseline and after respiratory challenge.
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Affiliation(s)
- Andrew O Knutson
- Molecular and Environmental Toxicology Training Program and Department of Comparative Biosciences, University of Wisconsin-Madison, Madison, WI 53706, United States
| | - Jyoti J Watters
- Molecular and Environmental Toxicology Training Program and Department of Comparative Biosciences, University of Wisconsin-Madison, Madison, WI 53706, United States.
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46
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Yolken R, Stallings C, Origoni A, Katsafanas E, Sweeney K, Squire A, Dickerson F. Exposure to household pet cats and dogs in childhood and risk of subsequent diagnosis of schizophrenia or bipolar disorder. PLoS One 2019; 14:e0225320. [PMID: 31790431 PMCID: PMC6886852 DOI: 10.1371/journal.pone.0225320] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Accepted: 11/02/2019] [Indexed: 12/19/2022] Open
Abstract
Background Serious psychiatric disorders such as schizophrenia and bipolar disorder have been associated with environmental exposures in early life. Contact with household pets such as cats and dogs can serve as a source of environmental exposure during these time periods. Methods We investigated the relationship between exposure to a household pet cat or dog during the first 12 years of life and having a subsequent diagnosis of schizophrenia or bipolar disorder. These studies were performed in a cohort of 396 individuals with schizophrenia, 381 with bipolar disorder, and 594 controls. The hazards of developing schizophrenia or bipolar disorder associated with first exposure to a household pet cat or dog were calculated using Cox Proportional Hazard and multivariate logistic regression models including socio-demographic covariates. Results We found that exposure to a household pet dog was associated with a significantly decreased hazard of having a subsequent diagnosis of schizophrenia (Hazard Ratio .75, p < .002) Furthermore, a significant decreased relative risk of schizophrenia was detected following exposure at birth and during the first years of life. There was no significant relationship between household exposure to a pet dog and bipolar disorder. There were no significant associations between exposure to a household pet cat and subsequent risk of either a schizophrenia or bipolar disorder diagnosis. However, there were trends towards an increased risk of both disorders at defined periods of exposure. Conclusions Exposure to household pets during infancy and childhood may be associated with altered rates of development of psychiatric disorders in later life.
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Affiliation(s)
- Robert Yolken
- Stanley Division of Developmental Neurovirology, Johns Hopkins School of Medicine, Baltimore, Maryland, United States of America
- * E-mail:
| | - Cassie Stallings
- Sheppard Pratt Health System, Baltimore, Maryland, United States of America
| | - Andrea Origoni
- Sheppard Pratt Health System, Baltimore, Maryland, United States of America
| | - Emily Katsafanas
- Sheppard Pratt Health System, Baltimore, Maryland, United States of America
| | - Kevin Sweeney
- Sheppard Pratt Health System, Baltimore, Maryland, United States of America
| | - Amalia Squire
- Sheppard Pratt Health System, Baltimore, Maryland, United States of America
| | - Faith Dickerson
- Sheppard Pratt Health System, Baltimore, Maryland, United States of America
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47
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Jyonouchi H, Geng L. Associations between Monocyte and T Cell Cytokine Profiles in Autism Spectrum Disorders: Effects of Dysregulated Innate Immune Responses on Adaptive Responses to Recall Antigens in a Subset of ASD Children. Int J Mol Sci 2019; 20:ijms20194731. [PMID: 31554204 PMCID: PMC6801811 DOI: 10.3390/ijms20194731] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 09/19/2019] [Accepted: 09/23/2019] [Indexed: 12/17/2022] Open
Abstract
Changes in monocyte cytokine production with toll like receptor (TLR) agonists in subjects with autism spectrum disorders (ASD) were best reflected by the IL-1β/IL-10 ratios in our previous research. The IL-1β/IL-10 based subgrouping (low, normal, and high) of ASD samples revealed marked differences in microRNA expression, and mitochondrial respiration. However, it is unknown whether the IL-1β/IL-10 ratio based subgrouping is associated with changes in T cell cytokine profiles or monocyte cytokine profiles with non-TLR agonists. In ASD (n = 152) and non-ASD (n = 41) subjects, cytokine production by peripheral blood monocytes (PBMo) with TLR agonists and β-glucan, an inflammasome agonist, and T cell cytokine production by peripheral blood mononuclear cells (PBMCs) with recall antigens (Ags) (food and candida Ags) were concurrently measured. Changes in monocyte cytokine profiles were observed with β-glucan in the IL-1β/IL-10 ratio based ASD subgroups, along with changes in T cell cytokine production and ASD subgroup-specific correlations between T cell and monocyte cytokine production. Non-ASD controls revealed considerably less of such correlations. Altered innate immune responses in a subset of ASD children are not restricted to TLR pathways and correlated with changes in T cell cytokine production. Altered trained immunity may play a role in the above described changes.
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Affiliation(s)
- Harumi Jyonouchi
- Department of Pediatrics, Saint Peter's University Hospital (SPUH), New Brunswick, NJ 08901, USA.
- Department of Pediatrics, Rutgers-Robert Wood Johnson medical school, New Brunswick, NJ 08901, USA.
| | - Lee Geng
- Department of Pediatrics, Saint Peter's University Hospital (SPUH), New Brunswick, NJ 08901, USA.
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48
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Wood TC, Edye ME, Harte MK, Neill JC, Prinssen EP, Vernon AC. Mapping the impact of exposure to maternal immune activation on juvenile Wistar rat brain macro- and microstructure during early post-natal development. Brain Neurosci Adv 2019; 3:2398212819883086. [PMID: 31742236 PMCID: PMC6861131 DOI: 10.1177/2398212819883086] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Maternal immune activation is consistently associated with elevated risk for multiple psychiatric disorders in the affected offspring. Related to this, an important goal of our work is to explore the impact of maternal immune activation effects across the lifespan. In this context, we recently reported the effects of polyriboinosinic-polyribocytidylic acid-induced maternal immune activation at gestational day 15, immediately prior to birth, at gestational day 21 and again at post-natal day 21, providing a systematic assessment of plasma interleukin 6, body temperature and weight alterations in pregnant rats and preliminary evidence for gross morphological changes and microglial neuropathology in both male and female offsprings at these time points. Here, we sought to complement and extend these data by characterising in more detail the mesoscale impact of gestational polyriboinosinic-polyribocytidylic acid exposure at gestational day 15 on the neuroanatomy of the juvenile (post-natal day 21) rat brain using high-resolution, ex vivo anatomical magnetic resonance imaging in combination with atlas-based segmentation. Our preliminary data suggest subtle neuroanatomical effects of gestational polyriboinosinic-polyribocytidylic acid exposure (n = 10) relative to saline controls (n = 10) at this time-point. Specifically, we found an increase in the relative volume of the diagonal domain in polyriboinosinic-polyribocytidylic acid offspring (p < 0.01 uncorrected), which just failed to pass stringent multiple comparisons correction (actual q = 0.07). No statistically significant microstructural alterations were detectable using diffusion tensor imaging. Further studies are required to map the proximal effects of maternal immune activation on the developing rodent brain from foetal to early post-natal life and confirm our findings herein.
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Affiliation(s)
- Tobias C Wood
- Centre for Neuroimaging Sciences, Department of Neuroimaging, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - Michelle E Edye
- Division of Pharmacy and Optometry, School of Health Sciences, Faculty of Medicine, Biology and Health, University of Manchester, Manchester, UK
| | - Michael K Harte
- Division of Pharmacy and Optometry, School of Health Sciences, Faculty of Medicine, Biology and Health, University of Manchester, Manchester, UK
| | - Joanna C Neill
- Division of Pharmacy and Optometry, School of Health Sciences, Faculty of Medicine, Biology and Health, University of Manchester, Manchester, UK
| | - Eric P Prinssen
- Roche Innovation Centre Basel, Grenzacherstrasse, Switzerland
| | - Anthony C Vernon
- Maurice Wohl Clinical Neuroscience Institute, Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK.,MRC Centre for Neurodevelopmental Disorders, Guy's Hospital Campus, King's College London, London, UK
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