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Emmanuel C, Oran A, Jensen ET, Fichorova RN, Gower WA, Perrin EM, Sanderson K, South AM, Gogcu S, Shenberger J, Singh R, Makker K, Thompson AL, Santos H, Fry RC, O'Shea TM. Neonatal inflammation and its association with asthma and obesity in late childhood among individuals born extremely preterm. Pediatr Res 2024:10.1038/s41390-024-03325-x. [PMID: 38914762 DOI: 10.1038/s41390-024-03325-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 04/06/2024] [Accepted: 04/27/2024] [Indexed: 06/26/2024]
Abstract
BACKGROUND Asthma and obesity are frequent outcomes among individuals born extremely preterm and are associated with decreased lifespan. Neonatal inflammation is associated with chronic neurodevelopmental disorders; however, it is less studied in association with other later childhood chronic disorders in this population. METHODS Fourteen hospitals in 5 U.S. states enrolled 1506 infants born before 28 weeks of gestation in the Extremely Low Gestational Age Newborn cohort in 2004-2014. Neonatal blood spots were collected on postnatal days 1, 7, 14, 21, and 28, and used to measure 14 inflammation-related proteins. Associations were evaluated between high (top quartile) levels of proteins and two chronic health disorders at ages 10 and 15 years: physician-diagnosed asthma and obesity (body mass index ≥95th percentile). RESULTS Few associations were found between high levels of 14 inflammation-related proteins, either on a single day or on multiple days, and either asthma or obesity. Similarly, few associations were found in analyses stratified by sex or presence/absence of prenatal inflammation. CONCLUSIONS In extremely preterm newborns, systemic elevations of inflammation-related proteins during the neonatal period were not associated with childhood asthma and obesity outcomes at 10 or 15 years of age. IMPACT In the large multi-center Extremely Low Gestational Age Newborn (ELGAN) cohort, sustained elevation of neonatal levels of inflammation-related proteins was not consistently associated with asthma or obesity outcomes at 10 or 15 years of age. This finding contrasts with reported associations of perinatal inflammation with obesity at 2 years and neurodevelopmental disorders at 2-15 years in the ELGANs, suggesting that unlike neurodevelopment, peripubertal obesity and asthma may be driven by later childhood exposures. Future research on perinatal mechanisms of childhood asthma and obesity should account for both fetal and later exposures and pathways in addition to inflammation at birth.
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Affiliation(s)
- Crisma Emmanuel
- University of North Carolina School of Nursing, Chapel Hill, NC, USA
| | - Ali Oran
- Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, The University of North Carolina, Chapel Hill, NC, USA
| | - Elizabeth T Jensen
- Department of Epidemiology and Prevention, Wake Forest University, Winston-Salem, NC, USA
| | - Raina N Fichorova
- Brigham and Women's Hospital, Boston, MA and Harvard Medical School, Boston, MA, USA
| | - William A Gower
- Department of Pediatrics, University of North Carolina School of Medicine, Chapel Hill, NC, USA
| | - Eliana M Perrin
- Department of Pediatrics, Johns Hopkins University School of Medicine and School of Nursing, Baltimore, MD, USA
| | - Keia Sanderson
- Department of Medicine-Nephrology, University of North Carolina School of Medicine, Chapel Hill, NC, USA
| | - Andrew M South
- Department of Epidemiology and Prevention, Wake Forest University, Winston-Salem, NC, USA
- Departments of Pediatrics, Wake Forest University School of Medicine, Winston-Salem, NC, USA
| | - Semsa Gogcu
- Departments of Pediatrics, Wake Forest University School of Medicine, Winston-Salem, NC, USA
| | - Jeffrey Shenberger
- Connecticut Children's Hospital, Hartford, CT and University of Connecticut School of Medicine, Farmington, CT, USA
| | - Rachana Singh
- Department of Pediatrics, Tufts University School of Medicine, Boston, MA, USA
| | - Kartikeya Makker
- Department of Pediatrics, Johns Hopkins University School of Medicine and School of Nursing, Baltimore, MD, USA
| | - Amanda L Thompson
- Department of Anthropology, University of North Carolina, Chapel Hill, NC, USA
| | - Hudson Santos
- University of Miami School of Nursing, Miami, FL, USA
| | - Rebecca C Fry
- Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, The University of North Carolina, Chapel Hill, NC, USA
| | - T M O'Shea
- Brigham and Women's Hospital, Boston, MA and Harvard Medical School, Boston, MA, USA.
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Nist MD, Pickler RH, Shoben AB, Conley YP. DNA Methylation, Inflammation, and Neurobehavior in Preterm Infants. Biol Res Nurs 2024:10998004241257664. [PMID: 38840298 DOI: 10.1177/10998004241257664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2024]
Abstract
Objectives: Inflammation contributes to disparate neurodevelopmental outcomes between preterm and term-born infants. In this context, DNA methylation may contribute to inflammation by affecting gene expression. Brain-derived neurotrophic factor (BDNF) and nuclear factor-kappa-B-inhibitor alpha (NFKBIA) are important genes for targeted DNA methylation analysis. The aims of this study were to (1) identify associations between inflammatory factors and BDNF and NFKBIA methylation, and (2) identify associations between BDNF and NFKBIA methylation and early neurobehavior in preterm infants. Methods: In a longitudinal cohort study of preterm infants born 28-31 weeks gestational age, blood samples were collected weekly for the quantification of inflammatory factors. We extracted DNA from saliva samples and quantified methylation of six BDNF cytosine-phosphate-guanine (CpG) sites and five NFKBIA CpG sites. Neurobehavior was assessed using the Neurobehavioral Assessment of the Preterm Infant. Results: Sixty-five infants were included in the analysis. In females, inflammatory factors were positively associated with BDNF methylation of most CpG sites. Interleukin-1 receptor antagonist was negatively associated with NFKBIA methylation at two CpG sites. In males, interleukin-6 was negatively associated with BDNF and NFKBIA methylation at most CpG sites. In females, BDNF methylation at two sites was inversely associated with motor performance. In males, NFKBIA methylation at one site was inversely associated with motor performance. Conclusion: This study provides evidence for the relationship between inflammation and neurobehavior in preterm infants, working mechanistically through DNA methylation. The finding of a difference between males and females suggests that female infants are potentially more vulnerable to inflammation and warrants future study.
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Affiliation(s)
| | - Rita H Pickler
- College of Nursing, The Ohio State University, Columbus, OH, USA
| | - Abigail B Shoben
- College of Public Health, The Ohio State University, Columbus, OH, USA
| | - Yvette P Conley
- School of Nursing, University of Pittsburgh, Pittsburgh, PA, USA
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Lee AC, Cherkerzian S, Tofail F, Folger LV, Ahmed S, Rahman S, Chowdhury NH, Khanam R, Olson I, Oken E, Fichorova R, Nelson CA, Baqui AH, Inder T. Perinatal inflammation, fetal growth restriction, and long-term neurodevelopmental impairment in Bangladesh. Pediatr Res 2024:10.1038/s41390-024-03101-x. [PMID: 38589559 DOI: 10.1038/s41390-024-03101-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 01/02/2024] [Accepted: 01/23/2024] [Indexed: 04/10/2024]
Abstract
BACKGROUND There are limited data on the impact of perinatal inflammation on child neurodevelopment in low-middle income countries and among growth-restricted infants. METHODS Population-based, prospective birth cohort study of 288 infants from July 2016-March 2017 in Sylhet, Bangladesh. Umbilical cord blood was analyzed for interleukin(IL)-1α, IL-1β, IL-6, IL-8, and C-reactive protein(CRP). Child neurodevelopment was assessed at 24 months with Bayley-III Scales of Infant Development. We determined associations between cord blood inflammation and neurodevelopmental outcomes, controlling for potential confounders. RESULTS 248/288 (86%) live born infants were followed until 24 months, among whom 8.9% were preterm and 45.0% small-for-gestational-age(SGA) at birth. Among all infants, elevated concentrations (>75%) of CRP and IL-6 at birth were associated with increased odds of fine motor delay at 24 months; elevated CRP was also associated with lower receptive communication z-scores. Among SGA infants, elevated IL-1α was associated with cognitive delay, IL-8 with language delay, CRP with lower receptive communication z-scores, and IL-1β with lower expressive communication and motor z-scores. CONCLUSIONS In rural Bangladesh, perinatal inflammation was associated with impaired neurodevelopment at 24 months. The associations were strongest among SGA infants and noted across several biomarkers and domains, supporting the neurobiological role of inflammation in adverse fetal development, particularly in the setting of fetal growth restriction. IMPACT Cord blood inflammation was associated with fine motor and language delays at 24 months of age in a community-based cohort in rural Bangladesh. 23.4 million infants are born small-for-gestational-age (SGA) globally each year. Among SGA infants, the associations between cord blood inflammation and adverse outcomes were strong and consistent across several biomarkers and neurodevelopmental domains (cognitive, motor, language), supporting the neurobiological impact of inflammation prominent in growth-restricted infants. Prenatal interventions to prevent intrauterine growth restriction are needed in low- and middle-income countries and may also result in long-term benefits on child development.
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Affiliation(s)
- Anne Cc Lee
- Department of Pediatrics, Brigham and Women's Hospital, Boston, MA, 02115, USA.
- Harvard Medical School, Boston, MA, 02115, USA.
| | - Sara Cherkerzian
- Department of Pediatrics, Brigham and Women's Hospital, Boston, MA, 02115, USA
- Harvard Medical School, Boston, MA, 02115, USA
| | - Fahmida Tofail
- Nutrition and Clinical Services Division, International Centre for Diarrhoeal Disease Research, Bangladesh (ICDDR,B), Dhaka, 1212, Bangladesh
| | - Lian V Folger
- Department of Pediatrics, Brigham and Women's Hospital, Boston, MA, 02115, USA
| | | | - Sayedur Rahman
- Projahnmo Research Foundation, Banani, Dhaka, 1213, Bangladesh
| | | | - Rasheda Khanam
- Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, 21205, USA
| | - Ingrid Olson
- Department of Pediatrics, Brigham and Women's Hospital, Boston, MA, 02115, USA
| | - Emily Oken
- Harvard Medical School, Boston, MA, 02115, USA
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA, 02115, USA
- Department of Population Medicine, Harvard Pilgrim Health Care Institute, Boston, MA, 02215, USA
| | - Raina Fichorova
- Harvard Medical School, Boston, MA, 02115, USA
- Department of Obstetrics, Gynecology and Reproductive Biology, Brigham and Women's Hospital, Boston, MA, 02115, USA
| | - Charles A Nelson
- Harvard Medical School, Boston, MA, 02115, USA
- Boston Children's Hospital, Boston, MA, 02115, USA
- Harvard Graduate School of Education, Boston, MA, 02138, USA
| | - Abdullah H Baqui
- Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, 21205, USA
| | - Terrie Inder
- Center for Neonatal Research, Children's Hospital of Orange County, Orange, CA, 92868, USA
- Department of Pediatrics, University of California Irvine, Irvine, CA, 92697, USA
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Marinelli T, Yi JX, O'Shea TM, Joseph RM, Hooper SR, Kuban KCK, Sakai C, Msall ME, Fry R, Singh R. Cerebral Palsy and Motor Impairment After Extreme Prematurity: Prediction of Diagnoses at Ages 2 and 10 Years. J Pediatr 2024; 271:114037. [PMID: 38580191 DOI: 10.1016/j.jpeds.2024.114037] [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: 12/31/2023] [Revised: 02/26/2024] [Accepted: 03/26/2024] [Indexed: 04/07/2024]
Abstract
OBJECTIVE To identify perinatal factors in children born extremely preterm (EP) that were associated with motor impairment (MI) at 2 and 10 years of age and develop a predictive algorithm to estimate the risk of MI during childhood. STUDY DESIGN Participants of the Extremely Low Gestational Age Newborns Study (ELGANS) were classified as: no MI, MI only at 2 years, MI only at 10 years, and MI at both 2 and 10 years, based on a standardized neurological examination at 2 and the Gross Motor Function Classification System (GMFCS) at 10 years of age. Least Absolute Shrinkage and Selection Operator (LASSO) regression was used to develop the final predictive model. RESULTS Of the 849 study participants, 64 (7.5%) had a diagnosis of MI at both 2 and 10 years and 63 (7.4%) had a diagnosis of MI at 1 visit but not the other. Of 22 total risk factors queried, 4 variables most reliably and accurately predicted MI: gestational age, weight z-score growth trajectory during neonatal intensive care unit (NICU) stay, ventriculomegaly, and cerebral echolucency on head ultrasound. By selecting probability thresholds of 3.5% and 7.0% at ages 2 and 10, respectively, likelihood of developing MI can be predicted with a sensitivity and specificity of 71.2%/72.1% at age 2 and 70.7%/70.7% at age 10. CONCLUSION In our cohort, the diagnosis of MI at 2 years did not always predict a diagnosis of MI at 10 years. Specific risk factors are predictive of MI and can estimate an individual infant's risk at NICU discharge of MI at age 10 years.
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Affiliation(s)
- Timothy Marinelli
- Department of Pediatrics, Tufts University School of Medicine, Boston, MA
| | - Joe X Yi
- Frank Porter Graham Child Development Institute, The University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - T Michael O'Shea
- Frank Porter Graham Child Development Institute, The University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - Robert M Joseph
- Department of Anatomy and Neurobiology, Boston University School of Medicine, Boston, MA
| | - Stephen R Hooper
- Frank Porter Graham Child Development Institute, The University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - Karl C K Kuban
- Department of Pediatrics and Neurology, Boston Medical Center, Boston, MA
| | - Christina Sakai
- Department of Pediatrics, Massachusetts General Hospital for Children, Boston, MA
| | - Michael E Msall
- Department of Pediatrics, Kennedy Research Center and Comer Children's Hospital, The University of Chicago Pritzker School of Medicine, Chicago, IL
| | - Rebecca Fry
- Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, The University of North Carolina, Chapel Hill, NC
| | - Rachana Singh
- Department of Pediatrics, Tufts University School of Medicine, Boston, MA.
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Molloy EJ, El-Dib M, Soul J, Juul S, Gunn AJ, Bender M, Gonzalez F, Bearer C, Wu Y, Robertson NJ, Cotton M, Branagan A, Hurley T, Tan S, Laptook A, Austin T, Mohammad K, Rogers E, Luyt K, Wintermark P, Bonifacio SL. Neuroprotective therapies in the NICU in preterm infants: present and future (Neonatal Neurocritical Care Series). Pediatr Res 2024; 95:1224-1236. [PMID: 38114609 PMCID: PMC11035150 DOI: 10.1038/s41390-023-02895-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 10/19/2023] [Accepted: 10/26/2023] [Indexed: 12/21/2023]
Abstract
The survival of preterm infants has steadily improved thanks to advances in perinatal and neonatal intensive clinical care. The focus is now on finding ways to improve morbidities, especially neurological outcomes. Although antenatal steroids and magnesium for preterm infants have become routine therapies, studies have mainly demonstrated short-term benefits for antenatal steroid therapy but limited evidence for impact on long-term neurodevelopmental outcomes. Further advances in neuroprotective and neurorestorative therapies, improved neuromonitoring modalities to optimize recruitment in trials, and improved biomarkers to assess the response to treatment are essential. Among the most promising agents, multipotential stem cells, immunomodulation, and anti-inflammatory therapies can improve neural outcomes in preclinical studies and are the subject of considerable ongoing research. In the meantime, bundles of care protecting and nurturing the brain in the neonatal intensive care unit and beyond should be widely implemented in an effort to limit injury and promote neuroplasticity. IMPACT: With improved survival of preterm infants due to improved antenatal and neonatal care, our focus must now be to improve long-term neurological and neurodevelopmental outcomes. This review details the multifactorial pathogenesis of preterm brain injury and neuroprotective strategies in use at present, including antenatal care, seizure management and non-pharmacological NICU care. We discuss treatment strategies that are being evaluated as potential interventions to improve the neurodevelopmental outcomes of infants born prematurely.
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Affiliation(s)
- Eleanor J Molloy
- Paediatrics, Trinity College Dublin, Trinity Research in Childhood Centre (TRICC), Dublin, Ireland.
- Children's Hospital Ireland (CHI) at Tallaght, Dublin, Ireland.
- Neonatology, CHI at Crumlin, Dublin, Ireland.
- Neonatology, Coombe Women's and Infants University Hospital, Dublin, Ireland.
| | - Mohamed El-Dib
- Department of Pediatrics, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Janet Soul
- Department of Neurology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Sandra Juul
- Department of Pediatrics, University of Washington, Seattle, WA, USA
| | - Alistair J Gunn
- Departments of Physiology and Paediatrics, School of Medical Sciences, University of Auckland, Private Bag 92019, Auckland, New Zealand
| | - Manon Bender
- Department of Neonatology, Wilhelmina Children's Hospital, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Fernando Gonzalez
- Department of Neurology, Division of Child Neurology, University of California, San Francisco, California, USA
| | - Cynthia Bearer
- Division of Neonatology, Department of Pediatrics, Rainbow Babies & Children's Hospital, Cleveland, Ohio, USA
- Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
| | - Yvonne Wu
- Department of Neurology, University of California San Francisco, San Francisco, California, USA
| | - Nicola J Robertson
- Institute for Women's Health, University College London, London, UK
- Centre for Clinical Brain Sciences, University of Edinburgh, Edinburgh, UK
| | - Mike Cotton
- Department of Pediatrics, Duke University, Durham, North Carolina, USA
| | - Aoife Branagan
- Paediatrics, Trinity College Dublin, Trinity Research in Childhood Centre (TRICC), Dublin, Ireland
- Neonatology, Coombe Women's and Infants University Hospital, Dublin, Ireland
| | - Tim Hurley
- Paediatrics, Trinity College Dublin, Trinity Research in Childhood Centre (TRICC), Dublin, Ireland
| | - Sidhartha Tan
- Wayne State University School of Medicine, Detroit, Michigan, USA
| | - Abbot Laptook
- Department of Pediatrics, Women and Infants Hospital, Brown University, Providence, Rhode Island, USA
| | - Topun Austin
- Department of Paediatrics, University of Cambridge, Cambridge, UK
| | - Khorshid Mohammad
- Section of Neonatology, Department of Pediatrics, University of Calgary, Calgary, Alberta, Canada
| | - Elizabeth Rogers
- Department of Pediatrics, University of California, San Francisco Benioff Children's Hospital, San Francisco, California, USA
| | - Karen Luyt
- Translational Health Sciences, University of Bristol, Bristol, UK
- Neonatology, University Hospitals Bristol and Weston NHS Foundation Trust, Bristol, UK
| | - Pia Wintermark
- Division of Neonatology, Montreal Children's Hospital, Montreal, Quebec, Canada
- McGill University Health Centre - Research Institute, Montreal, Quebec, Canada
| | - Sonia Lomeli Bonifacio
- Division of Neonatal and Developmental Medicine, Department of Pediatrics, Stanford University School of Medicine, Stanford, California, USA
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Morelli V, Heizelman RJ. Monitoring Social Determinants of Health Assessing Patients and Communities. Prim Care 2023; 50:527-547. [PMID: 37866829 DOI: 10.1016/j.pop.2023.04.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2023]
Abstract
Because of the devastating health effects of social determinants of health (SDoH), it is important for the primary care provider to assess and monitor these types of stressors. This can be done via surveys, geomapping, or various biomarkers. To date, however, each of these methods is fraught with obstacles. There are currently are no validated "best" SDoH screening tools for use in clinical practice. Nor is geomapping, a perfect solution. Although mapping can collect location specific factors, it does not account for the fact that patients may live in one area, work in another and travel frequently to a third.
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Affiliation(s)
- Vincent Morelli
- Department of Family and Community Medicine, Meharry Medical College, 3rd Floor, Old Hospital Building, 1005 Dr. D. B. Todd, Jr., Boulevard, Nashville, TN 37208-3599, USA.
| | - Robert Joseph Heizelman
- Department of Family Medicine, Medical Informatics, University of Michigan, 3rd Floor, Old Hospital Building, 1005 Dr. D. B. Todd, Jr., Boulevard, Nashville, TN 37208-3599, USA
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7
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Frazier JA, Li X, Kong X, Hooper SR, Joseph RM, Cochran DM, Kim S, Fry RC, Brennan PA, Msall ME, Fichorova RN, Hertz-Picciotto I, Daniels JL, Lai JS, Boles RE, Zvara BJ, Jalnapurkar I, Schweitzer JB, Singh R, Posner J, Bennett DH, Kuban KCK, O'Shea TM. Perinatal Factors and Emotional, Cognitive, and Behavioral Dysregulation in Childhood and Adolescence. J Am Acad Child Adolesc Psychiatry 2023; 62:1351-1362. [PMID: 37207889 PMCID: PMC10654259 DOI: 10.1016/j.jaac.2023.05.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 03/01/2023] [Accepted: 05/10/2023] [Indexed: 05/21/2023]
Abstract
OBJECTIVE This cohort study assessed perinatal factors known to be related to maternal and neonatal inflammation and hypothesized that several would be associated with emotional, cognitive, and behavioral dysregulation in youth. METHOD The Environmental influences on Child Health Outcomes (ECHO) is a research consortium of 69 pediatric longitudinal cohorts. A subset of 18 cohorts that had both Child Behavior Checklist (CBCL) data on children (6-18 years) and information on perinatal exposures including maternal prenatal infections was used. Children were classified as having the CBCL-Dysregulation Profile (CBCL-DP) if the sum of their T scores for 3 CBCL subscales (attention, anxious/depressed, and aggression) was ≥180. Primary exposures were perinatal factors associated with maternal and/or neonatal inflammation, and associations between these and outcome were assessed. RESULTS Approximately 13.4% of 4,595 youth met criteria for CBCL-DP. Boys were affected more than girls (15.1% vs 11.5%). More youth with CBCL-DP (35%) were born to mothers with prenatal infections compared with 28% of youth without CBCL-DP. Adjusted odds ratios indicated the following were significantly associated with dysregulation: having a first-degree relative with a psychiatric disorder; being born to a mother with lower educational attainment, who was obese, had any prenatal infection, and/or who smoked tobacco during pregnancy. CONCLUSION In this large study, a few modifiable maternal risk factors with established roles in inflammation (maternal lower education, obesity, prenatal infections, and smoking) were strongly associated with CBCL-DP and could be targets for interventions to improve behavioral outcomes of offspring. DIVERSITY & INCLUSION STATEMENT We worked to ensure race, ethnic, and/or other types of diversity in the recruitment of human participants. One or more of the authors of this paper self-identifies as a member of one or more historically underrepresented sexual and/or gender groups in science. We actively worked to promote sex and gender balance in our author group. The author list of this paper includes contributors from the location and/or community where the research was conducted who participated in the data collection, design, analysis, and/or interpretation of the work.
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Affiliation(s)
- Jean A Frazier
- Eunice Kennedy Shriver Center, UMass Chan Medical School, Worchester, Massachusetts.
| | - Xiuhong Li
- Johns Hopkins University, Baltimore, Maryland
| | | | | | | | - David M Cochran
- Eunice Kennedy Shriver Center, UMass Chan Medical School, Worchester, Massachusetts
| | - Sohye Kim
- Eunice Kennedy Shriver Center, UMass Chan Medical School, Worchester, Massachusetts
| | | | | | - Michael E Msall
- University of Chicago Comer Children's Hospital, Chicago, Illinois, and Kennedy Research Center on Intellectual and Neurodevelopmental Disabilities, The University of Chicago, Chicago, Illinois
| | - Raina N Fichorova
- Brigham and Women's Hospital, Boston, Massachusetts, and Harvard Medical School, Boston, Massachusetts
| | | | | | - Jin-Shei Lai
- Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Richard E Boles
- University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | | | - Isha Jalnapurkar
- Eunice Kennedy Shriver Center, UMass Chan Medical School, Worchester, Massachusetts
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8
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Kitase Y, Madurai NK, Hamimi S, Hellinger RL, Odukoya OA, Ramachandra S, Muthukumar S, Vasan V, Sevensky R, Kirk SE, Gall A, Heck T, Ozen M, Orsburn BC, Robinson S, Jantzie LL. Chorioamnionitis disrupts erythropoietin and melatonin homeostasis through the placental-fetal-brain axis during critical developmental periods. Front Physiol 2023; 14:1201699. [PMID: 37546540 PMCID: PMC10398572 DOI: 10.3389/fphys.2023.1201699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Accepted: 07/06/2023] [Indexed: 08/08/2023] Open
Abstract
Introduction: Novel therapeutics are emerging to mitigate damage from perinatal brain injury (PBI). Few newborns with PBI suffer from a singular etiology. Most experience cumulative insults from prenatal inflammation, genetic and epigenetic vulnerability, toxins (opioids, other drug exposures, environmental exposure), hypoxia-ischemia, and postnatal stressors such as sepsis and seizures. Accordingly, tailoring of emerging therapeutic regimens with endogenous repair or neuro-immunomodulatory agents for individuals requires a more precise understanding of ligand, receptor-, and non-receptor-mediated regulation of essential developmental hormones. Given the recent clinical focus on neurorepair for PBI, we hypothesized that there would be injury-induced changes in erythropoietin (EPO), erythropoietin receptor (EPOR), melatonin receptor (MLTR), NAD-dependent deacetylase sirtuin-1 (SIRT1) signaling, and hypoxia inducible factors (HIF1α, HIF2α). Specifically, we predicted that EPO, EPOR, MLTR1, SIRT1, HIF1α and HIF2α alterations after chorioamnionitis (CHORIO) would reflect relative changes observed in human preterm infants. Similarly, we expected unique developmental regulation after injury that would reveal potential clues to mechanisms and timing of inflammatory and oxidative injury after CHORIO that could inform future therapeutic development to treat PBI. Methods: To induce CHORIO, a laparotomy was performed on embryonic day 18 (E18) in rats with transient uterine artery occlusion plus intra-amniotic injection of lipopolysaccharide (LPS). Placentae and fetal brains were collected at 24 h. Brains were also collected on postnatal day 2 (P2), P7, and P21. EPO, EPOR, MLTR1, SIRT1, HIF1α and HIF2α levels were quantified using a clinical electrochemiluminescent biomarker platform, qPCR, and/or RNAscope. MLT levels were quantified with liquid chromatography mass spectrometry. Results: Examination of EPO, EPOR, and MLTR1 at 24 h showed that while placental levels of EPO and MLTR1 mRNA were decreased acutely after CHORIO, cerebral levels of EPO, EPOR and MLTR1 mRNA were increased compared to control. Notably, CHORIO brains at P2 were SIRT1 mRNA deficient with increased HIF1α and HIF2α despite normalized levels of EPO, EPOR and MLTR1, and in the presence of elevated serum EPO levels. Uniquely, brain levels of EPO, EPOR and MLTR1 shifted at P7 and P21, with prominent CHORIO-induced changes in mRNA expression. Reductions at P21 were concomitant with increased serum EPO levels in CHORIO rats compared to controls and variable MLT levels. Discussion: These data reveal that commensurate with robust inflammation through the maternal placental-fetal axis, CHORIO impacts EPO, MLT, SIRT1, and HIF signal transduction defined by dynamic changes in EPO, EPOR, MLTR1, SIRT1, HIF1α and HIF2α mRNA, and EPO protein. Notably, ligand-receptor mismatch, tissue compartment differential regulation, and non-receptor-mediated signaling highlight the importance, complexity and nuance of neural and immune cell development and provide essential clues to mechanisms of injury in PBI. As the placenta, immune cells, and neural cells share many common, developmentally regulated signal transduction pathways, further studies are needed to clarify the perinatal dynamics of EPO and MLT signaling and to capitalize on therapies that target endogenous neurorepair mechanisms.
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Affiliation(s)
- Yuma Kitase
- Division of Neonatal-Perinatal Medicine, Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Nethra K Madurai
- Division of Neonatal-Perinatal Medicine, Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Sarah Hamimi
- Division of Neonatal-Perinatal Medicine, Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Ryan L Hellinger
- Division of Pediatric Neurosurgery, Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - O Angel Odukoya
- Division of Pediatric Neurosurgery, Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Sindhu Ramachandra
- Division of Neonatal-Perinatal Medicine, Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Sankar Muthukumar
- Division of Pediatric Neurosurgery, Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Vikram Vasan
- Division of Pediatric Neurosurgery, Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Riley Sevensky
- Division of Neonatal-Perinatal Medicine, Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Shannon E Kirk
- Division of Neonatal-Perinatal Medicine, Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Alexander Gall
- Division of Neonatal-Perinatal Medicine, Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Timothy Heck
- Division of Neonatal-Perinatal Medicine, Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Maide Ozen
- Division of Neonatal-Perinatal Medicine, Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Benjamin C Orsburn
- Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Shenandoah Robinson
- Division of Pediatric Neurosurgery, Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD, United States
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Lauren L Jantzie
- Division of Neonatal-Perinatal Medicine, Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD, United States
- Division of Pediatric Neurosurgery, Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD, United States
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, United States
- Kennedy Krieger Institute, Baltimore, MD, United States
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9
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O'Shea TM, McGrath M, Aschner JL, Lester B, Santos HP, Marsit C, Stroustrup A, Emmanuel C, Hudak M, McGowan E, Patel S, Fry RC. Environmental influences on child health outcomes: cohorts of individuals born very preterm. Pediatr Res 2023; 93:1161-1176. [PMID: 35948605 PMCID: PMC9363858 DOI: 10.1038/s41390-022-02230-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 05/27/2022] [Accepted: 07/19/2022] [Indexed: 12/05/2022]
Abstract
The National Institutes of Health's Environmental influences on Child Health Outcomes (ECHO) Program was designed to address solution-oriented research questions about the links between children's early life environment and their risks of pre-, peri-, and post-natal complications, asthma, obesity, neurodevelopmental disorders, and positive health. Children born very preterm are at increased risk for many of the outcomes on which ECHO focuses, but the contributions of environmental factors to this risk are not well characterized. Three ECHO cohorts consist almost exclusively of individuals born very preterm. Data provided to ECHO from cohorts can be used to address hypotheses about (1) differential risks of chronic health and developmental conditions between individuals born very preterm and those born at term; (2) health disparities across social determinants of health; and (3) mechanisms linking early-life exposures and later-life outcomes among individuals born very preterm. IMPACT: The National Institutes of Health's Environmental Influences on Child Health Outcomes Program is conducting solution-oriented research on the links between children's environment and health. Three ECHO cohorts comprise study participants born very preterm; these cohorts have enrolled, to date, 1751 individuals born in 14 states in the U.S. in between April 2002 and March 2020. Extensive data are available on early-life environmental exposures and child outcomes related to neurodevelopment, asthma, obesity, and positive health. Data from ECHO preterm cohorts can be used to address questions about the combined effects of preterm birth and environmental exposures on child health outcomes.
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Affiliation(s)
- T Michael O'Shea
- Department of Pediatrics, University of North Carolina School of Medicine, Chapel Hill, NC, USA.
| | - Monica McGrath
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Judy L Aschner
- Department of Pediatrics, Joseph M. Sanzari Children's Hospital at Hackensack University Medical Center, Hackensack, NJ, USA
- Department of Pediatrics, Hackensack Meridian School of Medicine, Nutley, NJ, USA
- Department of Pediatrics, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Barry Lester
- Department of Pediatrics, Women & Infants Hospital, Brown University, Providence, RI, USA
- Brown Center for the Study of Children at Risk, Warren Alpert Medical School of Brown University, Women & Infants Hospital, Providence, RI, USA
- Department of Psychiatry and Human Behavior, Warren Alpert Medical School of Brown University, Providence, RI, USA
| | - Hudson P Santos
- Biobehavioral Laboratory, School of Nursing, The University of North Carolina, Chapel Hill, NC, USA
- Institute for Environmental Health Solutions, Gillings School of Global Public Health, The University of North Carolina, Chapel Hill, NC, USA
| | - Carmen Marsit
- Gangarosa Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Annemarie Stroustrup
- Departments of Pediatrics and Occupational Medicine, Epidemiology and Prevention, Zucker School of Medicine at Hofstra, Northwell Health, Cohen Children's Medical Center, New Hyde Park, NY, USA
| | - Crisma Emmanuel
- Biobehavioral Laboratory, School of Nursing, The University of North Carolina, Chapel Hill, NC, USA
| | - Mark Hudak
- Department of Pediatrics, University of Florida College of Medicine - Jacksonville, Jacksonville, FL, USA
| | - Elisabeth McGowan
- Women & Infants Hospital, Warren Alpert Medical School of Brown University, Providence, RI, USA
| | - Simran Patel
- Department of Pediatrics, University of North Carolina School of Medicine, Chapel Hill, NC, USA
| | - Rebecca C Fry
- Institute for Environmental Health Solutions, Gillings School of Global Public Health, The University of North Carolina, Chapel Hill, NC, USA
- Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, The University of North Carolina, Chapel Hill, NC, USA
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10
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The Role of Oxytocin in Abnormal Brain Development: Effect on Glial Cells and Neuroinflammation. Cells 2022; 11:cells11233899. [PMID: 36497156 PMCID: PMC9740972 DOI: 10.3390/cells11233899] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 11/29/2022] [Accepted: 11/30/2022] [Indexed: 12/07/2022] Open
Abstract
The neonatal period is critical for brain development and determinant for long-term brain trajectory. Yet, this time concurs with a sensitivity and risk for numerous brain injuries following perinatal complications such as preterm birth. Brain injury in premature infants leads to a complex amalgam of primary destructive diseases and secondary maturational and trophic disturbances and, as a consequence, to long-term neurocognitive and behavioral problems. Neuroinflammation is an important common factor in these complications, which contributes to the adverse effects on brain development. Mediating this inflammatory response forms a key therapeutic target in protecting the vulnerable developing brain when complications arise. The neuropeptide oxytocin (OT) plays an important role in the perinatal period, and its importance for lactation and social bonding in early life are well-recognized. Yet, novel functions of OT for the developing brain are increasingly emerging. In particular, OT seems able to modulate glial activity in neuroinflammatory states, but the exact mechanisms underlying this connection are largely unknown. The current review provides an overview of the oxytocinergic system and its early life development across rodent and human. Moreover, we cover the most up-to-date understanding of the role of OT in neonatal brain development and the potential neuroprotective effects it holds when adverse neural events arise in association with neuroinflammation. A detailed assessment of the underlying mechanisms between OT treatment and astrocyte and microglia reactivity is given, as well as a focus on the amygdala, a brain region of crucial importance for socio-emotional behavior, particularly in infants born preterm.
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11
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Jantzie LL. Placental mediated mechanisms of perinatal brain injury. Exp Neurol 2022; 358:114229. [PMID: 36152499 PMCID: PMC10115519 DOI: 10.1016/j.expneurol.2022.114229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Lauren L Jantzie
- Division of Neonatal-Perinatal Medicine, Departments of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD, United States of America; Neurosciences Intensive Care Nursery, Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD, United States of America; Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, United States of America; Division of Pediatric Neurosurgery, Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD, United States of America; Kennedy Krieger Institute, Baltimore, MD, United States of America
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12
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Li C, Liu X, Huang Z, Zhai Y, Li H, Wu J. Lactoferrin Alleviates Lipopolysaccharide-Induced Infantile Intestinal Immune Barrier Damage by Regulating an ELAVL1-Related Signaling Pathway. Int J Mol Sci 2022; 23:ijms232213719. [PMID: 36430202 PMCID: PMC9696789 DOI: 10.3390/ijms232213719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 11/02/2022] [Accepted: 11/03/2022] [Indexed: 11/09/2022] Open
Abstract
As the most important intestinal mucosal barrier of the main body, the innate immune barrier in intestinal tract plays especially pivotal roles in the overall health conditions of infants and young children; therefore, how to strengthen the innate immune barrier is pivotal. A variety of bioactivities of lactoferrin (LF) has been widely proved, including alleviating enteritis and inhibiting colon cancer; however, the effects of LF on intestinal immune barrier in infants and young children are still unclear, and the specific mechanism on how LF inhibits infantile enteritis by regulating immune signaling pathways is unrevealed. In the present study, we firstly performed pharmacokinetic analyses of LF in mice intestinal tissues, stomach tissues and blood, through different administration methods, to confirm the metabolic method of LF in mammals. Then we constructed in Vitro and in Vivo infantile intestinal immune barrier damage models utilizing lipopolysaccharide (LPS), and evaluated the effects of LF in alleviating LPS-induced intestinal immune barrier damage. Next, the related immune molecular mechanism on how LF exerted protective effects was investigated, through RNA-seq analyses of the mouse primary intestinal epithelial cells, and the specific genes were analyzed and screened out. Finally, the genes and their related immune pathway were validated in mRNA and protein levels; the portions of special immune cells (CD4+ T cells and CD8+ T cells) were also detected to further support our experimental results. Pharmacokinetic analyses demonstrated that the integrity of LF could reach mice stomach and intestine after oral gavage within 12 h, and the proper administration of LF should be the oral route. LF was proven to down-regulate the expression levels of inflammatory cytokines in both the primary intestinal epithelial cells and mice blood, especially LF without iron (Apo-LF), indicating LF alleviated infantile intestinal immune barrier damage induced by LPS. And through RNA-seq analyses of the mouse primary intestinal epithelial cells treated with LPS and LF, embryonic lethal abnormal vision Drosophila 1 (ELAVL1) was selected as one of the key genes, then the ELAVL1/PI3K/NF-κB pathway regulated by LF was verified to participate in the protection of infantile intestinal immune barrier damage in our study. Additionally, the ratio of blood CD4+/CD8+ T cells was significantly higher in the LF-treated mice than in the control mice, indicating that LF distinctly reinforced the overall immunity of infantile mice, further validating the strengthening bioactivity of LF on infantile intestinal immune barrier. In summary, LF was proven to alleviate LPS-induced intestinal immune barrier damage in young mice through regulating ELAVL1-related immune signaling pathways, which would expand current knowledge of the functions of bioactive proteins in foods within different research layers, as well as benefit preclinical and clinical researches in a long run.
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Affiliation(s)
- Chaonan Li
- Beijing Key Laboratory of Food Processing and Safety in Forestry, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100085, China
| | - Xinkui Liu
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing 102488, China
| | - Zhihong Huang
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing 102488, China
| | - Yiyan Zhai
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing 102488, China
| | - Huiying Li
- Beijing Key Laboratory of Food Processing and Safety in Forestry, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100085, China
- Correspondence: (H.L.); (J.W.)
| | - Jiarui Wu
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing 102488, China
- Correspondence: (H.L.); (J.W.)
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13
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Yates AG, Kislitsyna E, Alfonso Martin C, Zhang J, Sewell AL, Goikolea-Vives A, Cai V, Alkhader LF, Skaland A, Hammond B, Dimitrova R, Batalle D, Fernandes C, Edwards AD, Gressens P, Thornton C, Stolp HB. Montelukast reduces grey matter abnormalities and functional deficits in a mouse model of inflammation-induced encephalopathy of prematurity. J Neuroinflammation 2022; 19:265. [PMID: 36309753 PMCID: PMC9617353 DOI: 10.1186/s12974-022-02625-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Accepted: 10/18/2022] [Indexed: 11/30/2022] Open
Abstract
Encephalopathy of prematurity (EoP) affects approximately 30% of infants born < 32 weeks gestation and is highly associated with inflammation in the foetus. Here we evaluated the efficacy of montelukast, a cysteinyl leukotriene receptor antagonist widely used to treat asthma in children, to ameliorate peripheral and central inflammation, and subsequent grey matter neuropathology and behaviour deficits in a mouse model of EoP. Male CD-1 mice were treated with intraperitoneal (i.p.) saline or interleukin-1beta (IL-1β, 40 μg/kg, 5 μL/g body weight) from postnatal day (P)1-5 ± concomitant montelukast (1-30 mg/kg). Saline or montelukast treatment was continued for a further 5 days post-injury. Assessment of systemic and central inflammation and short-term neuropathology was performed from 4 h following treatment through to P10. Behavioural testing, MRI and neuropathological assessments were made on a second cohort of animals from P36 to 54. Montelukast was found to attenuate both peripheral and central inflammation, reducing the expression of pro-inflammatory molecules (IL-1β, IL-6, TNF) in the brain. Inflammation induced a reduction in parvalbumin-positive interneuron density in the cortex, which was normalised with high-dose montelukast. The lowest effective dose, 3 mg/kg, was able to improve anxiety and spatial learning deficits in this model of inflammatory injury, and alterations in cortical mean diffusivity were not present in animals that received this dose of montelukast. Repurposed montelukast administered early after preterm birth may, therefore, improve grey matter development and outcome in EoP.
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Affiliation(s)
- Abi G Yates
- Centre for the Developing Brain, School of Biomedical Engineering & Imaging Sciences, King's College London, London, UK
- Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Elena Kislitsyna
- Centre for the Developing Brain, School of Biomedical Engineering & Imaging Sciences, King's College London, London, UK
| | - Carla Alfonso Martin
- Centre for the Developing Brain, School of Biomedical Engineering & Imaging Sciences, King's College London, London, UK
| | - Jiaying Zhang
- Centre for the Developing Brain, School of Biomedical Engineering & Imaging Sciences, King's College London, London, UK
| | - Amy L Sewell
- Centre for the Developing Brain, School of Biomedical Engineering & Imaging Sciences, King's College London, London, UK
| | - Ane Goikolea-Vives
- Comparative Biomedical Sciences, Royal Veterinary College, Royal College Street, London, NW1 0TU, UK
| | - Valerie Cai
- Comparative Biomedical Sciences, Royal Veterinary College, Royal College Street, London, NW1 0TU, UK
| | - Lama F Alkhader
- Centre for the Developing Brain, School of Biomedical Engineering & Imaging Sciences, King's College London, London, UK
| | - Aleksander Skaland
- Centre for the Developing Brain, School of Biomedical Engineering & Imaging Sciences, King's College London, London, UK
| | - Basil Hammond
- Centre for the Developing Brain, School of Biomedical Engineering & Imaging Sciences, King's College London, London, UK
| | - Ralica Dimitrova
- Centre for the Developing Brain, School of Biomedical Engineering & Imaging Sciences, King's College London, London, UK
- Department of Forensic and Neurodevelopmental Science, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - Dafnis Batalle
- Centre for the Developing Brain, School of Biomedical Engineering & Imaging Sciences, King's College London, London, UK
- Department of Forensic and Neurodevelopmental Science, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - Cathy Fernandes
- SGDP Centre, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
- MRC Centre for Neurodevelopment Disorders, King's College London, London, UK
| | - A David Edwards
- Centre for the Developing Brain, School of Biomedical Engineering & Imaging Sciences, King's College London, London, UK
| | | | - Claire Thornton
- Centre for the Developing Brain, School of Biomedical Engineering & Imaging Sciences, King's College London, London, UK
- Comparative Biomedical Sciences, Royal Veterinary College, Royal College Street, London, NW1 0TU, UK
| | - Helen B Stolp
- Centre for the Developing Brain, School of Biomedical Engineering & Imaging Sciences, King's College London, London, UK.
- Comparative Biomedical Sciences, Royal Veterinary College, Royal College Street, London, NW1 0TU, UK.
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14
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Abstract
Individuals born extremely preterm (before 28 weeks of gestation) comprise only about 0.7% of births in the United States and an even lower proportion in other high resource countries. However, these individuals account for a disproportionate number of children with cerebral palsy, intellectual deficit, autism spectrum disorder, attention deficit hyperactivity disorder, and epilepsy. This review describes two large multiple center cohorts comprised of individuals born extremely preterm: the EPICURE cohort, recruited 1995 in the United Kingdom and the Republic of Ireland, and the Extremely Low Gestational Age Newborn (ELGAN), recruited 2002-2004 in five states in the United States. The primary focus of these studies has been neurodevelopmental disorders, but also of interest are growth, respiratory illness, and parent- and self-reported global health and well-being. Both of these studies indicate that among individuals born extremely preterm the risks of most neurodevelopmental disorders are increased. Early life factors that contribute to this risk include perinatal brain damage, some of which can be identified using neonatal head ultrasound, bronchopulmonary dysplasia, and neonatal systemic inflammation. Prenatal factors, particularly the family's socioeconomic position, also appear to contribute to risk. For most adverse outcomes, the risk is higher in males. Young adults born extremely preterm who have neurodevelopmental impairment, as compared to those without such impairment, rate their quality of life lower. However, young adults born extremely preterm who do not have neurodevelopmental impairments rate their quality of life as being similar to that of young adults born at term. Finally, we summarize the current state of interventions designed to improve the life course of extremely premature infants, with particular focus on efforts to prevent premature birth and on postnatal efforts to prevent adverse neurodevelopmental outcomes.
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Affiliation(s)
- Genevieve L Taylor
- Genevieve L Taylor MD: Department of Pediatrics, Division of Neonatal-Perinatal Medicine, University of North Carolina School of Medicine
| | - T Michael O'Shea
- T. Michael O'Shea, MD, MPH: Department of Pediatrics, Division of Neonatal-Perinatal Medicine, University of North Carolina School of Medicine.
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15
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Gall AR, Amoah SK, Kitase Y, Jantzie LL. Placental mediated mechanisms of perinatal brain injury: Evolving inflammation and exosomes. Exp Neurol 2022; 347:113914. [PMID: 34752783 PMCID: PMC8712107 DOI: 10.1016/j.expneurol.2021.113914] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Revised: 10/29/2021] [Accepted: 11/01/2021] [Indexed: 01/03/2023]
Abstract
Pregnancy is an inflammatory process that is carefully regulated by the placenta via immunomodulation and cell-to-cell communication of maternal and fetal tissues. Exosomes, types of extracellular vesicles, facilitate the intercellular communication and traffic biologically modifying cargo within the maternal-placental-fetal axis in normal and pathologic pregnancies. Chorioamnionitis is characterized by inflammation of chorioamniotic membranes that produces systemic maternal and fetal inflammatory responses of cytokine dysregulation and has been associated with brain injury and neurodevelopmental disorders. This review focuses on how pathologic placental exosomes propagate acute and chronic inflammation leading to brain injury. The evidence reviewed here highlights the need to investigate exosomes from pathologic pregnancies and those with known brain injury to identify new diagnostics, biomarkers, and potential therapeutic targets.
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Affiliation(s)
- Alexander R Gall
- Division of Neonatology, Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Stephen K Amoah
- Division of Neonatology, Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Yuma Kitase
- Division of Neonatology, Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Lauren L Jantzie
- Division of Neonatology, Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA,Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA,Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD, USA,Kennedy Krieger Institute, Baltimore, MD, USA,Corresponding author at: 600 N. Wolfe Street, CMSC Building, 6-104A, Baltimore, MD 21287, USA. (L.L. Jantzie)
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16
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Peripheral immune cells and perinatal brain injury: a double-edged sword? Pediatr Res 2022; 91:392-403. [PMID: 34750522 PMCID: PMC8816729 DOI: 10.1038/s41390-021-01818-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 08/24/2021] [Accepted: 09/14/2021] [Indexed: 01/07/2023]
Abstract
Perinatal brain injury is the leading cause of neurological mortality and morbidity in childhood ranging from motor and cognitive impairment to behavioural and neuropsychiatric disorders. Various noxious stimuli, including perinatal inflammation, chronic and acute hypoxia, hyperoxia, stress and drug exposure contribute to the pathogenesis. Among a variety of pathological phenomena, the unique developing immune system plays an important role in the understanding of mechanisms of injury to the immature brain. Neuroinflammation following a perinatal insult largely contributes to evolution of damage to resident brain cells, but may also be beneficial for repair activities. The present review will focus on the role of peripheral immune cells and discuss processes involved in neuroinflammation under two frequent perinatal conditions, systemic infection/inflammation associated with encephalopathy of prematurity (EoP) and hypoxia/ischaemia in the context of neonatal encephalopathy (NE) and stroke at term. Different immune cell subsets in perinatal brain injury including their infiltration routes will be reviewed and critical aspects such as sex differences and maturational stage will be discussed. Interactions with existing regenerative therapies such as stem cells and also potentials to develop novel immunomodulatory targets are considered. IMPACT: Comprehensive summary of current knowledge on the role of different immune cell subsets in perinatal brain injury including discussion of critical aspects to be considered for development of immunomodulatory therapies.
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17
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Tao D, Zhong T, Pang W, Li X. Saccharomyces boulardii improves the behaviour and emotions of spastic cerebral palsy rats through the gut-brain axis pathway. BMC Neurosci 2021; 22:76. [PMID: 34876019 PMCID: PMC8653608 DOI: 10.1186/s12868-021-00679-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 11/23/2021] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND Cerebral palsy (CP) is a kind of disability that influences motion, and children with CP also exhibit depression-like behaviour. Inflammation has been recognized as a contributor to CP and depression, and some studies suggest that the gut-brain axis may be a contributing factor. Our team observed that Saccharomyces boulardii (S. boulardii) could reduce the inflammatory level of rats with hyperbilirubinemia and improve abnormal behaviour. Both CP and depression are related to inflammation, and probiotics can improve depression by reducing inflammation. Therefore, we hypothesize that S. boulardii may improve the behaviour and emotions of spastic CP rats through the gut-brain axis pathway. METHODS Our new rat model was produced by resecting the cortex and subcortical white matter. Seventeen-day-old CP rats were exposed to S. boulardii or vehicle control by gastric gavage for 9 days, and different behavioural domains and general conditions were tested. Inflammation was assessed by measuring the inflammatory markers IL-6 and TNF-α. Hypothalamic-pituitary-adrenal (HPA) axis activity was assessed by measuring adrenocorticotropic hormone and corticosterone in the serum. Changes in the gut microbiome were detected by 16S rRNA. RESULTS The hemiplegic spastic CP rats we made with typical spastic paralysis exhibited depression-like behaviour. S. boulardii treatment of hemiplegic spastic CP rats improves behaviour and general conditions and significantly reduces the level of inflammation, decreases HPA axis activity, and increases gut microbiota diversity. CONCLUSIONS The model developed in this study mimics a hemiplegic spastic cerebral palsy. Damage to the cortex and subcortical white matter of 17-day-old Sprague-Dawley (SD) rats led to spastic CP-like behaviour, and the rats exhibited symptoms of depression-like behaviour. Our results indicate that S. boulardii might have potential in treating hemiplegic spastic CP rat models or as an add-on therapy via the gut-brain axis pathway.
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Affiliation(s)
- Deshuang Tao
- College of Basic Medicine, Jiamusi University, Jiamusi, Heilongjiang, China
- Jiamusi Central Hospital, Jiamusi, Heilongjiang, China
| | - Tangwu Zhong
- College of Basic Medicine, Jiamusi University, Jiamusi, Heilongjiang, China
| | - Wei Pang
- College of Rehab Medicine, Jiamusi University, Jiamusi, China
- Rehab Center for Child Cerebral Palsy, Jiamusi, Heilongjiang, China
- Institute of Pediatric Neurological Disorders, Jiamusi University, Jiamusi, China
| | - Xiaojie Li
- College of Rehab Medicine, Jiamusi University, Jiamusi, China.
- Rehab Center for Child Cerebral Palsy, Jiamusi, Heilongjiang, China.
- Institute of Pediatric Neurological Disorders, Jiamusi University, Jiamusi, China.
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18
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An Emerging Role for Epigenetics in Cerebral Palsy. J Pers Med 2021; 11:jpm11111187. [PMID: 34834539 PMCID: PMC8625874 DOI: 10.3390/jpm11111187] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 11/04/2021] [Accepted: 11/09/2021] [Indexed: 12/29/2022] Open
Abstract
Cerebral palsy is a set of common, severe, motor disabilities categorized by a static, nondegenerative encephalopathy arising in the developing brain and associated with deficits in movement, posture, and activity. Spastic CP, which is the most common type, involves high muscle tone and is associated with altered muscle function including poor muscle growth and contracture, increased extracellular matrix deposition, microanatomic disruption, musculoskeletal deformities, weakness, and difficult movement control. These muscle-related manifestations of CP are major causes of progressive debilitation and frequently require intensive surgical and therapeutic intervention to control. Current clinical approaches involve sophisticated consideration of biomechanics, radiologic assessments, and movement analyses, but outcomes remain difficult to predict. There is a need for more precise and personalized approaches involving omics technologies, data science, and advanced analytics. An improved understanding of muscle involvement in spastic CP is needed. Unfortunately, the fundamental mechanisms and molecular pathways contributing to altered muscle function in spastic CP are only partially understood. In this review, we outline evidence supporting the emerging hypothesis that epigenetic phenomena play significant roles in musculoskeletal manifestations of CP.
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19
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The Effects of Preterm Birth on Musculoskeletal Health-Related Disorders. J Clin Med 2021; 10:jcm10215082. [PMID: 34768599 PMCID: PMC8584797 DOI: 10.3390/jcm10215082] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 10/27/2021] [Accepted: 10/29/2021] [Indexed: 12/21/2022] Open
Abstract
Preterm birth is associated with various diseases and conditions which demand multidisciplinary medical care. Approximately 10% of all neonates are born prematurely with an increasing survival rate in almost all Western countries. This ongoing, yet desirable trend is creating new challenges for sufficient medical treatment regimens, which should be upheld throughout the patients’ lives. Orthopedic surgeons are focused on musculoskeletal disorders and the improvement of patients’ ability to cope with the challenges of everyday life. The most common conditions associated with preterm birth are cerebral palsy and a dysregulation of the calcium/phosphorus metabolism, which may lead to fractures. These diseases may vary greatly in their organic manifestation and clinical presentation. This demands multidisciplinary cooperation and parental support. Clinical management is aimed on the early enhancement of a patient’s physical, as well as neurological condition, and to prevent the development of secondary musculoskeletal disorders. In this article, we give an overview of the current literature on the most common musculoskeletal disorders associated with preterm birth and critically discuss state of the art diagnostic standards and treatment algorithms.
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20
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Kitase Y, Chin EM, Ramachandra S, Burkhardt C, Madurai NK, Lenz C, Hoon AH, Robinson S, Jantzie LL. Sustained peripheral immune hyper-reactivity (SPIHR): an enduring biomarker of altered inflammatory responses in adult rats after perinatal brain injury. J Neuroinflammation 2021; 18:242. [PMID: 34666799 PMCID: PMC8527679 DOI: 10.1186/s12974-021-02291-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Accepted: 10/07/2021] [Indexed: 01/12/2023] Open
Abstract
Background Chorioamnionitis (CHORIO) is a principal risk factor for preterm birth and is the most common pathological abnormality found in the placentae of preterm infants. CHORIO has a multitude of effects on the maternal–placental–fetal axis including profound inflammation. Cumulatively, these changes trigger injury in the developing immune and central nervous systems, thereby increasing susceptibility to chronic sequelae later in life. Despite this and reports of neural–immune changes in children with cerebral palsy, the extent and chronicity of the peripheral immune and neuroinflammatory changes secondary to CHORIO has not been fully characterized. Methods We examined the persistence and time course of peripheral immune hyper-reactivity in an established and translational model of perinatal brain injury (PBI) secondary to CHORIO. Pregnant Sprague–Dawley rats underwent laparotomy on embryonic day 18 (E18, preterm equivalent). Uterine arteries were occluded for 60 min, followed by intra-amniotic injection of lipopolysaccharide (LPS). Serum and peripheral blood mononuclear cells (PBMCs) were collected at young adult (postnatal day P60) and middle-aged equivalents (P120). Serum and PBMCs secretome chemokines and cytokines were assayed using multiplex electrochemiluminescent immunoassay. Multiparameter flow cytometry was performed to interrogate immune cell populations. Results Serum levels of interleukin-1β (IL-1β), IL-5, IL-6, C–X–C Motif Chemokine Ligand 1 (CXCL1), tumor necrosis factor-α (TNF-α), and C–C motif chemokine ligand 2/monocyte chemoattractant protein-1 (CCL2/MCP-1) were significantly higher in CHORIO animals compared to sham controls at P60. Notably, CHORIO PBMCs were primed. Specifically, they were hyper-reactive and secreted more inflammatory mediators both at baseline and when stimulated in vitro. While serum levels of cytokines normalized by P120, PBMCs remained primed, and hyper-reactive with a robust pro-inflammatory secretome concomitant with a persistent change in multiple T cell populations in CHORIO animals. Conclusions The data indicate that an in utero inflammatory insult leads to neural–immune changes that persist through adulthood, thereby conferring vulnerability to brain and immune system injury throughout the lifespan. This unique molecular and cellular immune signature including sustained peripheral immune hyper-reactivity (SPIHR) and immune cell priming may be a viable biomarker of altered inflammatory responses following in utero insults and advances our understanding of the neuroinflammatory cascade that leads to perinatal brain injury and later neurodevelopmental disorders, including cerebral palsy.
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Affiliation(s)
- Yuma Kitase
- Division of Neonatal-Perinatal Medicine, Department of Pediatrics, Johns Hopkins University School of Medicine, 600 N. Wolfe Street, CMSC Building, 6-104A, Baltimore, MD, USA
| | - Eric M Chin
- Department of Neurology and Developmental Medicine, Kennedy Krieger Institute, Baltimore, MD, USA
| | - Sindhu Ramachandra
- Division of Neonatal-Perinatal Medicine, Department of Pediatrics, Johns Hopkins University School of Medicine, 600 N. Wolfe Street, CMSC Building, 6-104A, Baltimore, MD, USA
| | - Christopher Burkhardt
- Division of Neonatal-Perinatal Medicine, Department of Pediatrics, Johns Hopkins University School of Medicine, 600 N. Wolfe Street, CMSC Building, 6-104A, Baltimore, MD, USA
| | - Nethra K Madurai
- Division of Neonatal-Perinatal Medicine, Department of Pediatrics, Johns Hopkins University School of Medicine, 600 N. Wolfe Street, CMSC Building, 6-104A, Baltimore, MD, USA
| | - Colleen Lenz
- Department of Neurology and Developmental Medicine, Kennedy Krieger Institute, Baltimore, MD, USA
| | - Alexander H Hoon
- Department of Neurology and Developmental Medicine, Kennedy Krieger Institute, Baltimore, MD, USA
| | - Shenandoah Robinson
- Division of Pediatric Neurosurgery, Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Lauren L Jantzie
- Division of Neonatal-Perinatal Medicine, Department of Pediatrics, Johns Hopkins University School of Medicine, 600 N. Wolfe Street, CMSC Building, 6-104A, Baltimore, MD, USA. .,Department of Neurology and Developmental Medicine, Kennedy Krieger Institute, Baltimore, MD, USA. .,Division of Pediatric Neurosurgery, Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD, USA. .,Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
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Lee S, Robinson K, Lodge M, Theroux M, Miller F, Akins R. Resistance to Neuromuscular Blockade by Rocuronium in Surgical Patients with Spastic Cerebral Palsy. J Pers Med 2021; 11:jpm11080765. [PMID: 34442409 PMCID: PMC8400439 DOI: 10.3390/jpm11080765] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 07/23/2021] [Accepted: 07/28/2021] [Indexed: 11/16/2022] Open
Abstract
Individuals with spastic cerebral palsy (CP) often exhibit altered sensitivities to neuromuscular blocking agents (NMBAs) used for surgical intubation. We assessed usage of the NMBA rocuronium in patients with spastic CP and evaluated potential modifiers of dosing including gross motor function classification system (GMFCS) level, birthweight, gestational age, and the use of anticonvulsant therapy. In a case-control study, surgical patients with spastic CP (n = 64) or with idiopathic or non-neuromuscular conditions (n = 73) were enrolled after informed consent/assent. Patient data, GMFCS level, anticonvulsant use, and rocuronium dosing for intubation and post-intubation neuromuscular blockade were obtained from medical records. Findings reveal participants with CP required more rocuronium per body weight for intubation than controls (1.00 ± 0.08 versus 0.64 ± 0.03 mg/kg; p < 0.0001). Dosing increased with GMFCS level (Spearman's rho = 0.323; p = 0.005), and participants with moderate to severe disability (GMFCS III-V) had elevated rocuronium with (1.21 ± 0.13 mg/kg) or without (0.86 ± 0.09 mg/kg) concurrent anticonvulsant therapy. Children born full-term or with birthweight >2.5 kg in the CP cohort required more rocuronium than preterm and low birthweight counterparts. Individuals with CP exhibited highly varied and significant resistance to neuromuscular blockade with rocuronium that was related to GMFCS and gestational age and weight at birth.
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Affiliation(s)
- Stephanie Lee
- Nemours Biomedical Research, Nemours-Alfred I. duPont Hospital for Children, Wilmington, DE 19803, USA; (S.L.); (K.R.); (M.L.)
| | - Karyn Robinson
- Nemours Biomedical Research, Nemours-Alfred I. duPont Hospital for Children, Wilmington, DE 19803, USA; (S.L.); (K.R.); (M.L.)
| | - Madison Lodge
- Nemours Biomedical Research, Nemours-Alfred I. duPont Hospital for Children, Wilmington, DE 19803, USA; (S.L.); (K.R.); (M.L.)
| | - Mary Theroux
- Department of Anesthesiology, Nemours-Alfred I. duPont Hospital for Children, Wilmington, DE 19803, USA;
| | - Freeman Miller
- Department of Orthopedics, Nemours-Alfred I. duPont Hospital for Children, Wilmington, DE 19803, USA;
| | - Robert Akins
- Nemours Biomedical Research, Nemours-Alfred I. duPont Hospital for Children, Wilmington, DE 19803, USA; (S.L.); (K.R.); (M.L.)
- Correspondence: ; Tel.: +1-302-651-6779
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22
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Carthy E, Ellender T. Histamine, Neuroinflammation and Neurodevelopment: A Review. Front Neurosci 2021; 15:680214. [PMID: 34335160 PMCID: PMC8317266 DOI: 10.3389/fnins.2021.680214] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Accepted: 06/18/2021] [Indexed: 12/16/2022] Open
Abstract
The biogenic amine, histamine, has been shown to critically modulate inflammatory processes as well as the properties of neurons and synapses in the brain, and is also implicated in the emergence of neurodevelopmental disorders. Indeed, a reduction in the synthesis of this neuromodulator has been associated with the disorders Tourette's syndrome and obsessive-compulsive disorder, with evidence that this may be through the disruption of the corticostriatal circuitry during development. Furthermore, neuroinflammation has been associated with alterations in brain development, e.g., impacting synaptic plasticity and synaptogenesis, and there are suggestions that histamine deficiency may leave the developing brain more vulnerable to proinflammatory insults. While most studies have focused on neuronal sources of histamine it remains unclear to what extent other (non-neuronal) sources of histamine, e.g., from mast cells and other sources, can impact brain development. The few studies that have started exploring this in vitro, and more limited in vivo, would indicate that non-neuronal released histamine and other preformed mediators can influence microglial-mediated neuroinflammation which can impact brain development. In this Review we will summarize the state of the field with regard to non-neuronal sources of histamine and its impact on both neuroinflammation and brain development in key neural circuits that underpin neurodevelopmental disorders. We will also discuss whether histamine receptor modulators have been efficacious in the treatment of neurodevelopmental disorders in both preclinical and clinical studies. This could represent an important area of future research as early modulation of histamine from neuronal as well as non-neuronal sources may provide novel therapeutic targets in these disorders.
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Affiliation(s)
- Elliott Carthy
- Department of Pharmacology, University of Oxford, Oxford, United Kingdom
| | - Tommas Ellender
- Department of Pharmacology, University of Oxford, Oxford, United Kingdom
- Department of Biomedical Sciences, University of Antwerp, Antwerp, Belgium
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23
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The impact of maternal obesity on childhood neurodevelopment. J Perinatol 2021; 41:928-939. [PMID: 33249428 DOI: 10.1038/s41372-020-00871-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Revised: 10/10/2020] [Accepted: 11/04/2020] [Indexed: 02/08/2023]
Abstract
There is growing clinical and experimental evidence to suggest that maternal obesity increases children's susceptibility to neurodevelopmental and neuropsychiatric disorders. Given the worldwide obesity epidemic, it is crucial that we acquire a thorough understanding of the available evidence, identify gaps in knowledge, and develop an agenda for intervention. This review synthesizes human and animal studies investigating the association between maternal obesity and offspring brain health. It also highlights key mechanisms underlying these effects, including maternal and fetal inflammation, alterations to the microbiome, epigenetic modifications of neurotrophic genes, and impaired dopaminergic and serotonergic signaling. Lastly, this review highlights several proposed interventions and priorities for future investigation.
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24
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Telomere length shortening in hospitalized preterm infants: A pilot study. PLoS One 2021; 16:e0243468. [PMID: 33471805 PMCID: PMC7817026 DOI: 10.1371/journal.pone.0243468] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Accepted: 11/21/2020] [Indexed: 12/18/2022] Open
Abstract
Leukocyte telomere length is a biomarker of aging-related health risks. Hospitalized preterm infants frequently experience elevated oxidative stress and inflammation, both of which contribute to telomere shortening. Our aim was to examine changes in telomere length during neonatal intensive care unit (NICU) hospitalization in a cohort of preterm infants <32 weeks' gestation. We conducted a longitudinal study of 10 infants (mean gestational age 27 weeks, range 23.5 to 29, at birth). We isolated DNA from dried blood spots and used Real Time Quantitative PCR to measure relative leukocyte telomere length in triplicate at three time points for each participant. From birth to discharge, infants experienced an average decline in relative telomere length of 0.021 units per week (95% CI -0.040, -0.0020; p = 0.03), after adjustment for gestational age at birth. Our results suggest a measurable decline in telomere length during NICU hospitalization. We speculate that telomere length change may convey information about NICU exposures that carry short- and long-term health risks.
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25
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Patel AL, Johnson TJ, Meier PP. Racial and socioeconomic disparities in breast milk feedings in US neonatal intensive care units. Pediatr Res 2021; 89:344-352. [PMID: 33188286 PMCID: PMC7662724 DOI: 10.1038/s41390-020-01263-y] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 10/01/2020] [Accepted: 10/04/2020] [Indexed: 02/06/2023]
Abstract
Very low birth weight (VLBW; <1500 g birth weight) infants are substantially more likely to be born to black than to non-black mothers, predisposing them to potentially preventable morbidities that increase the risk for costly lifelong health problems. Mothers' own milk (MOM) may be considered the ultimate "personalized medicine" since milk composition and bioactive components vary among mothers and multiple milk constituents provide specific protection based on shared exposures between mother and infant. MOM feedings reduce the risks and associated costs of prematurity-associated morbidities, with the greatest reduction afforded by MOM through to NICU discharge. Although black and non-black mothers have similar lactation goals and initiation rates, black VLBW infants are half as likely to receive MOM at NICU discharge in the United States. Black mothers are significantly more likely to be low-income, single heads of household and have more children in the home, increasing the burden of MOM provision. Although rarely considered, the out-of-pocket and opportunity costs associated with providing MOM for VLBW infants are especially onerous for black mothers. When MOM is not available, the NICU assumes the costs of inferior substitutes for MOM, contributing further to disparate outcomes. Novel strategies to mitigate these disparities are urgently needed. IMPACT: Mother's own milk exemplifies personalized medicine through its unique biologic activity. Hospital factors and social determinants of health are associated with mother's own milk feedings for very low-birth-weight infants in the neonatal intensive care unit. Notably, out-of-pocket and opportunity costs associated with providing mother's own milk are borne by mothers. Conceptualizing mother's own milk feedings as an integral part of NICU care requires consideration of who bears the costs of MOM provision-the mother or the NICU?
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Affiliation(s)
- Aloka L. Patel
- grid.262743.60000000107058297Department of Pediatrics, Rush University Children’s Hospital, Chicago, IL USA
| | - Tricia J. Johnson
- grid.262743.60000000107058297Departments of Health Systems Management, Rush University, Chicago, IL USA
| | - Paula P. Meier
- grid.262743.60000000107058297Department of Pediatrics, Rush University Children’s Hospital, Chicago, IL USA ,grid.240684.c0000 0001 0705 3621College of Nursing, Rush University Medical Center, Chicago, IL USA
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Fleiss B, Gressens P, Stolp HB. Cortical Gray Matter Injury in Encephalopathy of Prematurity: Link to Neurodevelopmental Disorders. Front Neurol 2020; 11:575. [PMID: 32765390 PMCID: PMC7381224 DOI: 10.3389/fneur.2020.00575] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Accepted: 05/19/2020] [Indexed: 12/16/2022] Open
Abstract
Preterm-born infants frequently suffer from an array of neurological damage, collectively termed encephalopathy of prematurity (EoP). They also have an increased risk of presenting with a neurodevelopmental disorder (e.g., autism spectrum disorder; attention deficit hyperactivity disorder) later in life. It is hypothesized that it is the gray matter injury to the cortex, in addition to white matter injury, in EoP that is responsible for the altered behavior and cognition in these individuals. However, although it is established that gray matter injury occurs in infants following preterm birth, the exact nature of these changes is not fully elucidated. Here we will review the current state of knowledge in this field, amalgamating data from both clinical and preclinical studies. This will be placed in the context of normal processes of developmental biology and the known pathophysiology of neurodevelopmental disorders. Novel diagnostic and therapeutic tactics required integration of this information so that in the future we can combine mechanism-based approaches with patient stratification to ensure the most efficacious and cost-effective clinical practice.
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Affiliation(s)
- Bobbi Fleiss
- School of Health and Biomedical Sciences, RMIT University, Bundoora, VIC, Australia
- Université de Paris, NeuroDiderot, Inserm, Paris, France
- PremUP, Paris, France
- Centre for the Developing Brain, School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom
| | - Pierre Gressens
- Université de Paris, NeuroDiderot, Inserm, Paris, France
- PremUP, Paris, France
- Centre for the Developing Brain, School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom
| | - Helen B. Stolp
- Centre for the Developing Brain, School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom
- Comparative Biomedical Sciences, Royal Veterinary College, London, United Kingdom
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Oldenburg KS, O’Shea TM, Fry RC. Genetic and epigenetic factors and early life inflammation as predictors of neurodevelopmental outcomes. Semin Fetal Neonatal Med 2020; 25:101115. [PMID: 32444251 PMCID: PMC7363586 DOI: 10.1016/j.siny.2020.101115] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Among individuals born very preterm, perinatal inflammation, particularly if sustained or recurring, is highly likely to contribute to adverse neurodevelopmental outcomes, including cerebral white matter damage, cerebral palsy, cognitive impairment, attention-deficit/hyperactivity disorder, and autism spectrum disorder. Antecedents and correlates of perinatal inflammation include socioeconomic disadvantage, maternal obesity, maternal infections, fetal growth restriction, neonatal sepsis, necrotizing enterocolitis, and prolonged mechanical ventilation. Genetic factors can modify susceptibility to perinatal inflammation and to neurodevelopmental disorders. Preliminary evidence supports a role of epigenetic markers as potential mediators of the presumed effects of preterm birth and/or its consequences on neurodevelopment later in life. Further study is needed of factors such as sex, psychosocial stressors, and environmental exposures that could modify the relationship of early life inflammation to later neurodevelopmental impairments. Also needed are pharmacological and non-pharmacological interventions to attenuate inflammation towards the goal of improving the neurodevelopment of individuals born very preterm.
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Affiliation(s)
- Kirsi S. Oldenburg
- Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, University of North Carolina at Chapel Hill
| | - T. Michael O’Shea
- Department of Pediatrics (Neonatology), University of North Carolina School of Medicine
| | - Rebecca C. Fry
- Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, University of North Carolina at Chapel Hill
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Abstract
Cerebral palsy (CP), defined as a group of nonprogressive disorders of movement and posture, is the most common cause of severe neurodisability in children. The prevalence of CP is the same across the globe, affecting approximately 17 million people worldwide. Cerebral Palsy is an umbrella term used to describe the disease due to its inherent heterogeneity. For instance, CP has multiple (1) causes; (2) clinical types; (3) patterns of neuropathology on brain imaging and (4) it's associated with several developmental pathologies such as intellectual disability, autism, epilepsy, and visual impairment. Understanding its physiopathology is crucial to developing protective strategies. Despite its importance, there is still insufficient progress in the areas of CP prediction, early diagnosis, treatment, and prevention. Herein we describe the current risk factors and biomarkers used for the diagnosis and prediction of CP. With the advancement in biomarker discovery, we predict that our understanding of the etiopathophysiology of CP will also increase, lending to more opportunities for developing novel treatments and prognosis.
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Affiliation(s)
- Zeynep Alpay Savasan
- Department of Obstetrics and Gynecology, Maternal Fetal Medicine Division, Beaumont Health System, Royal Oak, MI, United States; Oakland University-William Beaumont School of Medicine, Beaumont Health, Royal Oak, MI, United States.
| | - Sun Kwon Kim
- Department of Obstetrics and Gynecology, Maternal Fetal Medicine Division, Beaumont Health System, Royal Oak, MI, United States; Oakland University-William Beaumont School of Medicine, Beaumont Health, Royal Oak, MI, United States
| | - Kyung Joon Oh
- Beaumont Research Institute, Beaumont Health, Royal Oak, MI, United States; Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, South Korea; Department of Obstetrics and Gynecology, Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, South Korea
| | - Stewart F Graham
- Oakland University-William Beaumont School of Medicine, Beaumont Health, Royal Oak, MI, United States; Beaumont Research Institute, Beaumont Health, Royal Oak, MI, United States
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In-line filtration in very preterm neonates: a randomized controlled trial. Sci Rep 2020; 10:5003. [PMID: 32193413 PMCID: PMC7081338 DOI: 10.1038/s41598-020-61815-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Accepted: 02/26/2020] [Indexed: 11/30/2022] Open
Abstract
In-line filtration is increasingly used in critically-ill infants but its benefits, by preventing micro-particle infusion in very preterm neonates, remain to be demonstrated. We conducted a randomized controlled trial among very preterm infants allocated to receive either in-line filtration of all the intra-venous lines or standard care without filters. The primary outcome was differences greater than 20% in the median changes in pro-inflammatory cytokine serum concentrations measured at day 3 and day 8 (+/−1) using a Luminex multianalytic profiling technique. Major neonatal complications were analyzed as secondary predefined outcomes. We randomized 146 infants, assigned to filter (n = 73) or control (n = 73) group. Difference over 20% in pro-inflammatory cytokine concentration between day 3 and day 8 was not found statistically different between the two groups, both in intent-to-treat (with imputation) and per protocol (without imputation) analyses. The incidences of most of neonatal complications were found to be similar. Hence, this trial did not evidence a beneficial effect of in-line filtration in very preterm infants on the inflammatory response syndrome and neonatal morbidities. These data should be interpreted according to local standards in infusion preparation and central line management.
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30
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Thai JD, Gregory KE. Bioactive Factors in Human Breast Milk Attenuate Intestinal Inflammation during Early Life. Nutrients 2020; 12:E581. [PMID: 32102231 PMCID: PMC7071406 DOI: 10.3390/nu12020581] [Citation(s) in RCA: 69] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 02/15/2020] [Accepted: 02/16/2020] [Indexed: 12/14/2022] Open
Abstract
Human breast milk is well known as the ideal source of nutrition during early life, ensuring optimal growth during infancy and early childhood. Breast milk is also the source of many unique and dynamic bioactive components that play a key role in the development of the immune system. These bioactive components include essential microbes, human milk oligosaccharides (HMOs), immunoglobulins, lactoferrin and dietary polyunsaturated fatty acids. These factors all interact with intestinal commensal bacteria and/or immune cells, playing a critical role in establishment of the intestinal microbiome and ultimately influencing intestinal inflammation and gut health during early life. Exposure to breast milk has been associated with a decreased incidence and severity of necrotizing enterocolitis (NEC), a devastating disease characterized by overwhelming intestinal inflammation and high morbidity among preterm infants. For this reason, breast milk is considered a protective factor against NEC and aberrant intestinal inflammation common in preterm infants. In this review, we will describe the key microbial, immunological, and metabolic components of breast milk that have been shown to play a role in the mechanisms of intestinal inflammation and/or NEC prevention.
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Affiliation(s)
- Julie D. Thai
- Division of Newborn Medicine, Boston Children’s Hospital, Boston, MA 02115, USA
| | - Katherine E. Gregory
- Department of Pediatric Newborn Medicine, Department of Nursing, Brigham and Women’s Hospital, Boston, MA 02115, USA;
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31
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Jantzie LL, Maxwell JR, Newville JC, Yellowhair TR, Kitase Y, Madurai N, Ramachandra S, Bakhireva LN, Northington FJ, Gerner G, Tekes A, Milio LA, Brigman JL, Robinson S, Allan A. Prenatal opioid exposure: The next neonatal neuroinflammatory disease. Brain Behav Immun 2020; 84:45-58. [PMID: 31765790 PMCID: PMC7010550 DOI: 10.1016/j.bbi.2019.11.007] [Citation(s) in RCA: 70] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 10/29/2019] [Accepted: 11/17/2019] [Indexed: 01/19/2023] Open
Abstract
The rates of opioid use disorder during pregnancy have more than quadrupled in the last decade, resulting in numerous infants suffering exposure to opioids during the perinatal period, a critical period of central nervous system (CNS) development. Despite increasing use, the characterization and definition of the molecular and cellular mechanisms of the long-term neurodevelopmental impacts of opioid exposure commencing in utero remains incomplete. Thus, in consideration of the looming public health crisis stemming from the multitude of infants with prenatal opioid exposure entering school age, we undertook an investigation of the effects of perinatal methadone exposure in a novel preclinical model. Specifically, we examined the effects of opioids on the developing brain to elucidate mechanisms of putative neural cell injury, to identify diagnostic biomarkers and to guide clinical studies of outcome and follow-up. We hypothesized that methadone would induce a pronounced inflammatory profile in both dams and their pups, and be associated with immune system dysfunction, sustained CNS injury, and altered cognition and executive function into adulthood. This investigation was conducted using a combination of cellular, molecular, biochemical, and clinically translatable biomarker, imaging and cognitive assessment platforms. Data reveal that perinatal methadone exposure increases inflammatory cytokines in the neonatal peripheral circulation, and reprograms and primes the immune system through sustained peripheral immune hyperreactivity. In the brain, perinatal methadone exposure not only increases chemokines and cytokines throughout a crucial developmental period, but also alters microglia morphology consistent with activation, and upregulates TLR4 and MyD88 mRNA. This increase in neuroinflammation coincides with reduced myelin basic protein and altered neurofilament expression, as well as reduced structural coherence and significantly decreased fractional anisotropy on diffusion tensor imaging. In addition to this microstructural brain injury, adult rats exposed to methadone in the perinatal period have significant impairment in associative learning and executive control as assessed using touchscreen technology. Collectively, these data reveal a distinct systemic and neuroinflammatory signature associated with prenatal methadone exposure, suggestive of an altered CNS microenvironment, dysregulated developmental homeostasis, complex concurrent neural injury, and imaging and cognitive findings consistent with clinical literature. Further investigation is required to define appropriate therapies targeted at the neural injury and improve the long-term outcomes for this exceedingly vulnerable patient population.
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Affiliation(s)
- Lauren L. Jantzie
- Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD.,Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD.,Department of Neurology, Kennedy Krieger Institute, Baltimore, MD.,Department of Pediatrics, University of New Mexico School of Medicine, Albuquerque, NM.,Department of Neurosciences, University of New Mexico School of Medicine, Albuquerque, NM.,Correspondence: Lauren L. Jantzie, PhD, Johns Hopkins University, Department of Pediatrics, Division of Neonatal-Perinatal Medicine, 600 N. Wolfe Street, CMSC Building Room 6-104A, Baltimore, MD 21287,
| | - Jessie R. Maxwell
- Department of Pediatrics, University of New Mexico School of Medicine, Albuquerque, NM.,Department of Neurosciences, University of New Mexico School of Medicine, Albuquerque, NM
| | - Jessie C. Newville
- Department of Pediatrics, University of New Mexico School of Medicine, Albuquerque, NM.,Department of Neurosciences, University of New Mexico School of Medicine, Albuquerque, NM
| | - Tracylyn R. Yellowhair
- Division of Pediatric Neurosurgery, Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Yuma Kitase
- Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Nethra Madurai
- Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Sindhu Ramachandra
- Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Ludmila N. Bakhireva
- Substance Use Research and Education (SURE) Center, University of New Mexico College of Pharmacy, Albuquerque, NM
| | | | - Gwendolyn Gerner
- Department of Neuropsychology, Kennedy Krieger Institute, Baltimore, MD,Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Aylin Tekes
- Division of Pediatric Radiology and Pediatric Neuroradiology, Russell Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Lorraine A. Milio
- Department of Obstetrics & Gynecology, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Jonathan L. Brigman
- Department of Neurosciences, University of New Mexico School of Medicine, Albuquerque, NM
| | - Shenandoah Robinson
- Division of Pediatric Neurosurgery, Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Andrea Allan
- Department of Neurosciences, University of New Mexico School of Medicine, Albuquerque, NM
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Newville J, Maxwell JR, Kitase Y, Robinson S, Jantzie LL. Perinatal Opioid Exposure Primes the Peripheral Immune System Toward Hyperreactivity. Front Pediatr 2020; 8:272. [PMID: 32670993 PMCID: PMC7332770 DOI: 10.3389/fped.2020.00272] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Accepted: 04/29/2020] [Indexed: 11/29/2022] Open
Abstract
The increased incidence of opioid use during pregnancy warrants investigation to reveal the impact of opioid exposure on the developing fetus. Exposure during critical periods of development could have enduring consequences for affected individuals. Particularly, evidence is mounting that developmental injury can result in immune priming, whereby subsequent immune activation elicits an exaggerated immune response. This maladaptive hypersensitivity to immune challenge perpetuates dysregulated inflammatory signaling and poor health outcomes. Utilizing an established preclinical rat model of perinatal methadone exposure, we sought to investigate the consequences of developmental opioid exposure on in vitro activation of peripheral blood mononuclear cells (PBMCs). We hypothesize that PBMCs from methadone-exposed rats would exhibit abnormal chemokine and cytokine expression at baseline, with exaggerated chemokine and cytokine production following immune stimulation compared to saline-exposed controls. On postnatal day (P) 7, pup PMBCs were isolated and cultured, pooling three pups per n. Following 3 and 24 h, the supernatant from cultured PMBCs was collected and assessed for inflammatory cytokine and chemokine expression at baseline or lipopolysaccharide (LPS) stimulation using multiplex electrochemiluminescence. Following 3 and 24 h, baseline production of proinflammatory chemokine and cytokine levels were significantly increased in methadone PBMCs (p < 0.0001). Stimulation with LPS for 3 h resulted in increased tumor necrosis factor (TNF-α) and C-X-C motif chemokine ligand 1 (CXCL1) expression by 3.5-fold in PBMCs from methadone-exposed PBMCs compared to PBMCs from saline-exposed controls (p < 0.0001). Peripheral blood mononuclear cell hyperreactivity was still apparent at 24 h of LPS stimulation, evidenced by significantly increased TNF-α, CXCL1, interleukin 6 (IL-6), and IL-10 production by methadone PMBCs compared to saline control PBMCs (p < 0.0001). Together, we provide evidence of increased production of proinflammatory molecules from methadone PBMCs at baseline, in addition to sustained hyperreactivity relative to saline-exposed controls. Exaggerated peripheral immune responses exacerbate inflammatory signaling, with subsequent consequences on many organ systems throughout the body, such as the developing nervous system. Enhanced understanding of these inflammatory mechanisms will allow for appropriate therapeutic development for infants who were exposed to opioids during development. Furthermore, these data highlight the utility of this in vitro PBMC assay technique for future biomarker development to guide specific treatment for patients exposed to opioids during gestation.
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Affiliation(s)
- Jessie Newville
- Department of Neurosciences, University of New Mexico School of Medicine, Albuquerque, NM, United States
| | - Jessie R Maxwell
- Department of Neurosciences, University of New Mexico School of Medicine, Albuquerque, NM, United States.,Departments of Pediatrics, University of New Mexico School of Medicine, Albuquerque, NM, United States
| | - Yuma Kitase
- Division of Neonatal-Perinatal Medicine, Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Shenandoah Robinson
- Division of Pediatric Neurosurgery, Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD, United States.,Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Lauren L Jantzie
- Division of Neonatal-Perinatal Medicine, Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD, United States.,Division of Pediatric Neurosurgery, Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD, United States.,Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, United States.,Department of Neurology, Kennedy Krieger Institute, Baltimore, MD, United States
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Neurocognitive and social-communicative function of children born very preterm at 10 years of age: Associations with microorganisms recovered from the placenta parenchyma. J Perinatol 2020; 40:306-315. [PMID: 31624322 PMCID: PMC6985019 DOI: 10.1038/s41372-019-0505-8] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Revised: 07/18/2019] [Accepted: 08/01/2019] [Indexed: 12/11/2022]
Abstract
OBJECTIVE Infection of the placenta has been associated with preterm birth as well as neurocognitive impairment. This study aimed to determine whether specific bacterial species in the placenta of extremely preterm pregnancies are associated with neurological deficits later in life. STUDY DESIGN Using data from 807 children in the ELGAN study the risks of a low score on six neurological assessments in relation to 15 different microbes were quantified with odds ratios. RESULTS The presence of certain microbial species in the placenta was associated with lower scores on numerical and oral language assessments. Lactobacillus sp. was associated with decreased risk of a low oral language score and a composite measure of IQ and executive function. CONCLUSION Placental microorganisms were associated with neurocognitive, but not social-communicative, outcomes at age 10. In contrast, the presence of the anti-inflammatory Lactobacillus sp. in the placenta was associated with a lower risk of impaired neurocognitive functions.
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Magalhães RC, Moreira JM, Lauar AO, da Silva AAS, Teixeira AL, E Silva ACS. Inflammatory biomarkers in children with cerebral palsy: A systematic review. RESEARCH IN DEVELOPMENTAL DISABILITIES 2019; 95:103508. [PMID: 31683246 DOI: 10.1016/j.ridd.2019.103508] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 09/04/2019] [Accepted: 10/01/2019] [Indexed: 06/10/2023]
Abstract
BACKGROUND An exacerbated systemic inflammatory response has been associated with the occurrence of central nervous system injuries that may determine, in long term, motor, sensorial and cognitive disabilities. Persistence of this exacerbated inflammatory response seems to be involved in the pathophysiology of cerebral palsy (CP). METHODS A systematic search was conducted in Bireme, Embase, PubMed and Scopus including studies that were published until August 2019. The key words used were "cerebral palsy", "brain injury", "inflammation", "oxidative stress", "cytokines", "chemokines", "neuropsychomotor development", "neurodevelopment outcomes" and "child". The quality of the eligible studies was determined according to the criteria suggested by the Newcastle-Ottawa Scale (NOS). RESULTS Fourteen eligible studies aimed to investigate the association between peripheral inflammatory molecules and neurodevelopment in infants. The studies differed regarding CP-related risk factors and its classification. Inflammatory proteins were measured in blood, plasma, serum, cerebrospinal fluid or urine. In ten studies, higher circulating levels of cytokines, including IL-1β, IL-6, TNF and CXCL8/IL-8, were associated with abnormal neurological findings. CONCLUSION The investigation of the potential association between inflammatory molecules and neurological development in children with CP requires further original studies in order to clarify the influence of prenatal and perinatal inflammation on neurological outcomes.
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Affiliation(s)
- Rafael Coelho Magalhães
- Interdisciplinary Laboratory of Medical Investigation, School of Medicine, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Janaina Matos Moreira
- Interdisciplinary Laboratory of Medical Investigation, School of Medicine, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil; Department of Pediatrics, School of Medicine, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Amanda Oliveira Lauar
- Interdisciplinary Laboratory of Medical Investigation, School of Medicine, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Ariádna Andrade Saldanha da Silva
- Interdisciplinary Laboratory of Medical Investigation, School of Medicine, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Antônio Lúcio Teixeira
- Interdisciplinary Laboratory of Medical Investigation, School of Medicine, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil; Neuropsychiatry Program, Department of Psychiatry and Behavioral Sciences, McGovern Medical School, University of Texas Health Science Center at Houston, USA
| | - Ana Cristina Simões E Silva
- Interdisciplinary Laboratory of Medical Investigation, School of Medicine, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil; Department of Pediatrics, School of Medicine, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil.
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Bell KA, Matthews LG, Cherkerzian S, Palmer C, Drouin K, Pepin HL, Ellard D, Inder TE, Ramel SE, Belfort MB. Associations of Growth and Body Composition with Brain Size in Preterm Infants. J Pediatr 2019; 214:20-26.e2. [PMID: 31377040 PMCID: PMC9131302 DOI: 10.1016/j.jpeds.2019.06.062] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 05/08/2019] [Accepted: 06/25/2019] [Indexed: 12/23/2022]
Abstract
OBJECTIVE To assess the association of very preterm infants' brain size at term-equivalent age with physical growth from birth to term and body composition at term. STUDY DESIGN We studied 62 infants born at <33 weeks of gestation. At birth and term, we measured weight and length and calculated body mass index. At term, infants underwent air displacement plethysmography to determine body composition (fat and fat-free mass) and magnetic resonance imaging to quantify brain size (bifrontal diameter, biparietal diameter, transverse cerebellar distance). We estimated associations of physical growth (Z-score change from birth to term) and body composition with brain size, adjusting for potential confounders using generalized estimating equations. RESULTS The median gestational age was 29 weeks (range, 24.0-32.9 weeks). Positive gains in weight and body mass index Z-score were associated with increased brain size. Each additional 100 g of fat-free mass at term was associated with larger bifrontal diameter (0.6 mm; 95% CI, 0.2-1.0 mm), biparietal diameter (0.7 mm; 95% CI, 0.3-1.1 mm), and transverse cerebellar distance (0.3 mm; 95% CI, 0.003-0.5 mm). Associations between fat mass and brain metrics were not statistically significant. CONCLUSIONS Weight and body mass index gain from birth to term, and lean mass-but not fat-at term, were associated with larger brain size. Factors that promote lean mass accrual among preterm infants may also promote brain growth.
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Affiliation(s)
- Katherine A Bell
- Department of Pediatric Newborn Medicine, Brigham & Women's Hospital, Boston, MA.
| | - Lillian G Matthews
- Department of Pediatric Newborn Medicine, Brigham & Women's Hospital, Boston, MA
| | - Sara Cherkerzian
- Department of Pediatric Newborn Medicine, Brigham & Women's Hospital, Boston, MA
| | - Caroline Palmer
- Department of Pediatric Newborn Medicine, Brigham & Women's Hospital, Boston, MA
| | - Kaitlin Drouin
- Department of Pediatric Newborn Medicine, Brigham & Women's Hospital, Boston, MA
| | - Hunter L Pepin
- Department of Nutrition, Brigham & Women's Hospital, Boston, MA
| | - Deirdre Ellard
- Department of Nutrition, Brigham & Women's Hospital, Boston, MA
| | - Terrie E Inder
- Department of Pediatric Newborn Medicine, Brigham & Women's Hospital, Boston, MA
| | - Sara E Ramel
- Division of Neonatology, School of Medicine, University of Minnesota, Minneapolis, MN
| | - Mandy B Belfort
- Department of Pediatric Newborn Medicine, Brigham & Women's Hospital, Boston, MA
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Lucke AM, Hagan JL, Weiss MD. Does ventriculomegaly without hemorrhage impact neurologic and behavioral outcomes of premature neonates? J Perinatol 2019; 39:1577-1580. [PMID: 31488905 DOI: 10.1038/s41372-019-0492-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Accepted: 07/20/2019] [Indexed: 11/09/2022]
Affiliation(s)
- Ashley M Lucke
- Department of Pediatrics, Children's National Medical Center, George Washington University School of Medicine, Washington, DC, USA.
| | - Joseph L Hagan
- Department of Pediatrics (Neonatology), Baylor College of Medicine, Houston, TX, USA
| | - Michael D Weiss
- Department of Pediatrics (Neonatology), University of Florida, Gainesville, FL, USA
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Adelantado-Renau M, Esteban-Cornejo I, Rodriguez-Ayllon M, Cadenas-Sanchez C, Gil-Cosano JJ, Mora-Gonzalez J, Solis-Urra P, Verdejo-Román J, Aguilera CM, Escolano-Margarit MV, Verdejo-Garcia A, Catena A, Moliner-Urdiales D, Ortega FB. Inflammatory biomarkers and brain health indicators in children with overweight and obesity: The ActiveBrains project. Brain Behav Immun 2019; 81:588-597. [PMID: 31330300 DOI: 10.1016/j.bbi.2019.07.020] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Revised: 07/15/2019] [Accepted: 07/18/2019] [Indexed: 12/25/2022] Open
Abstract
INTRODUCTION Chronic inflammation plays an important role on the pathogenesis of several cardiovascular and metabolic diseases, as well as on brain function and behaviour. The aim of the present study was to examine the associations between inflammatory biomarkers and a wide range of brain health indicators (i.e., academic performance, executive function, behavioural and emotional functioning, and brain volume) in children with overweight/obesity. METHODS A total of 107 children (10.0 ± 1.1 years, 41% girls) from the ActiveBrains project were included in the analysis. Five inflammatory biomarkers were analysed in plasma: white blood cell (WBC) count, interleukin-6 (IL-6), interleukin-1β, tumor necrosis factor-α (TNF-α), and C-reactive protein (CRP). Academic performance was assessed by Woodcock-Muñoz Tests of Achievement. Executive function was assessed through the Design Fluency Test for cognitive flexibility, the Stroop test for cognitive inhibition, and the Delayed Non-Match-to-Sample task for working memory. Behavioural and emotional functioning was evaluated through the Behavior Assessment System for Children (BASC) questionnaire. Total and regional brain volume was assessed by magnetic resonance imaging. RESULTS IL-6 was inversely associated with adaptive skills (β = -0.228; p = 0.030), while TNF-α was related to mathematics (β = -0.198; p = 0.034). In addition, CRP was positively associated with externalizing (β = 0.246; p = 0.046) and internalizing problems (β = 0.234; p = 0.039), as well as the behavioural symptoms index (β = 0.236; p = 0.047). However, these significant associations disappeared after multiple comparisons correction. Inflammatory biomarkers were not associated with executive function and total brain volumes. Regarding regional brain analyses, WBC was positively associated with gray matter volume in the left middle temporal gyrus (β = 0.387; p < 0.001, k = 44), and CRP was positively associated with gray matter volume in the right superior temporal gyrus (β = 0.439; p < 0.001, k = 29). Additionally, when adjusting by total brain volume, CRP was positively associated with gray matter volume in the right supplementary motor cortex (β = 0.453; p < 0.001, k = 51). Moreover, both, IL-6 (β = 0.366; p < 0.001, k = 81) and TNF-α (β = 0.368; p < 0.001, k = 62) were positively associated with white matter volume around the right inferior frontal gyrus pars opercularis, while CRP was inversely associated with white matter volume around the left superior frontal gyrus (β = -0.482; p < 0.001, k = 82). After adjusting by total brain volume, CRP was also inversely associated with white matter volume in 3 additional clusters (β ranging from -0.473 to -0.404; p < 0.001, k = 87). CONCLUSIONS Inflammation was slightly associated with brain health (i.e., academic performance, behavioural and emotional functioning and regional brain volume) in children with overweight or obesity. Further larger longitudinal and interventional studies are warranted to elucidate the short-term and long-term effect of systemic low-grade inflammation on children's brain health.
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Affiliation(s)
| | - Irene Esteban-Cornejo
- PROFITH "PROmoting FITness and Health Through Physical Activity" Research Group, Sport and Health University Research Institute (iMUDS), Department of Physical and Sports Education, Faculty of Sport Sciences, University of Granada, Granada, Spain; Center for Cognitive and Brain Health, Department of Psychology, Northeastern University, Boston, MA, USA
| | - María Rodriguez-Ayllon
- PROFITH "PROmoting FITness and Health Through Physical Activity" Research Group, Sport and Health University Research Institute (iMUDS), Department of Physical and Sports Education, Faculty of Sport Sciences, University of Granada, Granada, Spain
| | - Cristina Cadenas-Sanchez
- PROFITH "PROmoting FITness and Health Through Physical Activity" Research Group, Sport and Health University Research Institute (iMUDS), Department of Physical and Sports Education, Faculty of Sport Sciences, University of Granada, Granada, Spain
| | - Jose Juan Gil-Cosano
- PROFITH "PROmoting FITness and Health Through Physical Activity" Research Group, Sport and Health University Research Institute (iMUDS), Department of Physical and Sports Education, Faculty of Sport Sciences, University of Granada, Granada, Spain
| | - Jose Mora-Gonzalez
- PROFITH "PROmoting FITness and Health Through Physical Activity" Research Group, Sport and Health University Research Institute (iMUDS), Department of Physical and Sports Education, Faculty of Sport Sciences, University of Granada, Granada, Spain
| | - Patricio Solis-Urra
- PROFITH "PROmoting FITness and Health Through Physical Activity" Research Group, Sport and Health University Research Institute (iMUDS), Department of Physical and Sports Education, Faculty of Sport Sciences, University of Granada, Granada, Spain; IRyS Research Group, School of Physical Education, Pontificia Universidad Católica de Valparaíso, Valparaiso, Chile
| | - Juan Verdejo-Román
- Laboratory of Cognitive and Computational Neuroscience (UCM-UPM), Centre for Biomedical Technology (CTB), Madrid, Spain; Mind, Brain, and Behavior Research Center-CIMCYC, University of Granada, Granada, Spain
| | - Concepción M Aguilera
- Department of Biochemistry and Molecular Biology II, Institute of Nutrition and Food Technology, Center for Biomedical Research, University of Granada, Granada, Spain; CIBER Fisiopatología de la Obesidad y la Nutrición (CIBEROBN), Madrid, Spain; Instituto de Investigación Biosanitaria ibs, Granada, Spain
| | | | - Antonio Verdejo-Garcia
- School of Psychological Sciences and Turner Institute for Brain and Mental Health, Monash University, Melbourne, VIC, Australia
| | - Andrés Catena
- Department of Experimental Psychology, Mind, Brain and Behavior Research Center (CIMCYC), University of Granada, Granada, Spain
| | | | - Francisco B Ortega
- PROFITH "PROmoting FITness and Health Through Physical Activity" Research Group, Sport and Health University Research Institute (iMUDS), Department of Physical and Sports Education, Faculty of Sport Sciences, University of Granada, Granada, Spain; Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge, Sweden
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Heuer LS, Croen LA, Jones KL, Yoshida CK, Hansen RL, Yolken R, Zerbo O, DeLorenze G, Kharrazi M, Ashwood P, Van de Water J. An Exploratory Examination of Neonatal Cytokines and Chemokines as Predictors of Autism Risk: The Early Markers for Autism Study. Biol Psychiatry 2019; 86:255-264. [PMID: 31279535 PMCID: PMC6677631 DOI: 10.1016/j.biopsych.2019.04.037] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Revised: 04/09/2019] [Accepted: 04/27/2019] [Indexed: 01/17/2023]
Abstract
BACKGROUND The identification of an early biomarker for autism spectrum disorder (ASD) would improve the determination of risk, leading to earlier diagnosis and, potentially, earlier intervention and improved outcomes. METHODS Data were generated from the Early Markers for Autism study, a population-based case-control study of prenatal and neonatal biomarkers of ASD. Newborn bloodspots of children with ASD (n = 370), children with developmental delay (n = 140), and general population (GP) controls (n = 378) were analyzed for 42 different immune markers using a Luminex multiplex platform. Comparisons of immune marker concentrations between groups were examined using logistic regression and partial least squares discriminant analysis. RESULTS Children with ASD had significantly increased neonatal levels of interleukin-6 (IL-6) and IL-8 compared with GP controls. An increase in IL-8 was especially significant in the ASD group with early onset compared with the GP group, with an adjusted odds ratio of 1.97 (95% confidence interval, 1.39-2.83; p = .00014). In addition, children with ASD had significantly elevated levels of eotaxin-1, interferon-γ, and IL-12p70 relative to children with developmental delay. We observed no significant differences in levels of immune markers between the developmental delay and GP groups. CONCLUSIONS Elevated levels of some inflammatory markers in newborn bloodspots indicated a higher degree of immune activation at birth in children who were subsequently diagnosed with ASD. The data from this exploratory study suggest that with further expansion, the development of neonatal bloodspot testing for cytokine/chemokine levels might lead to the identification of biomarkers that provide an accurate assessment of ASD risk at birth.
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Affiliation(s)
- Luke S Heuer
- Division of Rheumatology, Allergy, and Clinical Immunology, Department of Internal Medicine, University of California, Davis, Davis, California; MIND Institute, University of California, Davis, Davis, California
| | - Lisa A Croen
- Division of Research, Kaiser Permanente Northern California, Oakland, California
| | - Karen L Jones
- Division of Rheumatology, Allergy, and Clinical Immunology, Department of Internal Medicine, University of California, Davis, Davis, California; MIND Institute, University of California, Davis, Davis, California
| | - Cathleen K Yoshida
- Division of Research, Kaiser Permanente Northern California, Oakland, California
| | - Robin L Hansen
- MIND Institute, University of California, Davis, Davis, California; Department of Pediatrics, University of California, Davis, Davis, California
| | - Robert Yolken
- Stanley Division of Developmental Neurovirology, Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Ousseny Zerbo
- Division of Research, Kaiser Permanente Northern California, Oakland, California
| | - Gerald DeLorenze
- Division of Research, Kaiser Permanente Northern California, Oakland, California
| | - Martin Kharrazi
- Environmental Health Investigations Branch, California Department of Public Health, Richmond, California
| | - Paul Ashwood
- MIND Institute, University of California, Davis, Davis, California; Department of Medical Microbiology and Immunology, University of California, Davis, Davis, California
| | - Judy Van de Water
- Division of Rheumatology, Allergy, and Clinical Immunology, Department of Internal Medicine, University of California, Davis, Davis, California; MIND Institute, University of California, Davis, Davis, California.
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Phillips CM, Chen LW, Heude B, Bernard JY, Harvey NC, Duijts L, Mensink-Bout SM, Polanska K, Mancano G, Suderman M, Shivappa N, Hébert JR. Dietary Inflammatory Index and Non-Communicable Disease Risk: A Narrative Review. Nutrients 2019; 11:E1873. [PMID: 31408965 PMCID: PMC6722630 DOI: 10.3390/nu11081873] [Citation(s) in RCA: 167] [Impact Index Per Article: 33.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 07/30/2019] [Accepted: 08/05/2019] [Indexed: 12/13/2022] Open
Abstract
There are over 1,000,000 publications on diet and health and over 480,000 references on inflammation in the National Library of Medicine database. In addition, there have now been over 30,000 peer-reviewed articles published on the relationship between diet, inflammation, and health outcomes. Based on this voluminous literature, it is now recognized that low-grade, chronic systemic inflammation is associated with most non-communicable diseases (NCDs), including diabetes, obesity, cardiovascular disease, cancers, respiratory and musculoskeletal disorders, as well as impaired neurodevelopment and adverse mental health outcomes. Dietary components modulate inflammatory status. In recent years, the Dietary Inflammatory Index (DII®), a literature-derived dietary index, was developed to characterize the inflammatory potential of habitual diet. Subsequently, a large and rapidly growing body of research investigating associations between dietary inflammatory potential, determined by the DII, and risk of a wide range of NCDs has emerged. In this narrative review, we examine the current state of the science regarding relationships between the DII and cancer, cardiometabolic, respiratory and musculoskeletal diseases, neurodevelopment, and adverse mental health outcomes. We synthesize the findings from recent studies, discuss potential underlying mechanisms, and look to the future regarding novel applications of the adult and children's DII (C-DII) scores and new avenues of investigation in this field of nutritional research.
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Affiliation(s)
- Catherine M Phillips
- HRB Centre for Diet and Health Research, School of Public Health, Physiotherapy, and Sports Science, University College Dublin, Belfield, Dublin 4, Ireland.
- HRB Centre for Diet and Health Research, School of Public Health, University College Cork, Western Gateway Building, Western Rd, Cork, Co. Cork, Ireland.
| | - Ling-Wei Chen
- HRB Centre for Diet and Health Research, School of Public Health, Physiotherapy, and Sports Science, University College Dublin, Belfield, Dublin 4, Ireland
| | - Barbara Heude
- Research Team on the Early Life Origins of Health (EAROH), Centre for Research in Epidemiology and Statistics (CRESS), INSERM, Université de Paris, F-94807 Villejuif, France
| | - Jonathan Y Bernard
- Research Team on the Early Life Origins of Health (EAROH), Centre for Research in Epidemiology and Statistics (CRESS), INSERM, Université de Paris, F-94807 Villejuif, France
| | - Nicholas C Harvey
- MRC Lifecourse Epidemiology Unit, University of Southampton, Southampton General Hospital, Southampton SO16 6YD, UK
| | - Liesbeth Duijts
- The Generation R Study Group, Erasmus MC, University Medical Center, P.O. Box 2040, 3000 CA Rotterdam, The Netherlands
- Department of Pediatrics, Division of Respiratory Medicine and Allergology, Erasmus MC, University Medical Center, P.O. Box 2060, 3000 CB Rotterdam, The Netherlands
- Department of Pediatrics, Division of Neonatology, Erasmus MC, University Medical Center, P.O. Box 2060, 3000 CB Rotterdam, The Netherlands
| | - Sara M Mensink-Bout
- The Generation R Study Group, Erasmus MC, University Medical Center, P.O. Box 2040, 3000 CA Rotterdam, The Netherlands
- Department of Pediatrics, Division of Respiratory Medicine and Allergology, Erasmus MC, University Medical Center, P.O. Box 2060, 3000 CB Rotterdam, The Netherlands
| | - Kinga Polanska
- Department of Environmental Epidemiology, Nofer Institute of Occupational Medicine, 91-348 Lodz, Poland
| | - Giulia Mancano
- MRC Integrative Epidemiology Unit, Population Health Sciences, Bristol Medical School, University of Bristol, Bristol BS8 2BN, UK
| | - Matthew Suderman
- MRC Integrative Epidemiology Unit, Population Health Sciences, Bristol Medical School, University of Bristol, Bristol BS8 2BN, UK
| | - Nitin Shivappa
- Cancer Prevention and Control Program and Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC 29208, USA
| | - James R Hébert
- Cancer Prevention and Control Program and Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC 29208, USA
- Connecting Health Innovations LLC, Columbia, SC 29201, USA
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Stolp HB, Fleiss B, Arai Y, Supramaniam V, Vontell R, Birtles S, Yates AG, Baburamani AA, Thornton C, Rutherford M, Edwards AD, Gressens P. Interneuron Development Is Disrupted in Preterm Brains With Diffuse White Matter Injury: Observations in Mouse and Human. Front Physiol 2019; 10:955. [PMID: 31417418 PMCID: PMC6683859 DOI: 10.3389/fphys.2019.00955] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Accepted: 07/09/2019] [Indexed: 12/18/2022] Open
Abstract
Preterm brain injury, occurring in approximately 30% of infants born <32 weeks gestational age, is associated with an increased risk of neurodevelopmental disorders, such as autism spectrum disorder (ASD) and attention deficit hyperactivity disorder (ADHD). The mechanism of gray matter injury in preterm born children is unclear and likely to be multifactorial; however, inflammation, a high predictor of poor outcome in preterm infants, has been associated with disrupted interneuron maturation in a number of animal models. Interneurons are important for regulating normal brain development, and disruption in interneuron development, and the downstream effects of this, has been implicated in the etiology of neurodevelopmental disorders. Here, we utilize postmortem tissue from human preterm cases with or without diffuse white matter injury (WMI; PMA range: 23+2 to 28+1 for non-WMI group, 26+6 to 30+0 for WMI group, p = 0.002) and a model of inflammation-induced preterm diffuse white matter injury (i.p. IL-1β, b.d., 10 μg/kg/injection in male CD1 mice from P1–5). Data from human preterm infants show deficits in interneuron numbers in the cortex and delayed growth of neuronal arbors at this early stage of development. In the mouse, significant reduction in the number of parvalbumin-positive interneurons was observed from postnatal day (P) 10. This decrease in parvalbumin neuron number was largely rectified by P40, though there was a significantly smaller number of parvalbumin positive cells associated with perineuronal nets in the upper cortical layers. Together, these data suggest that inflammation in the preterm brain may be a contributor to injury of specific interneuron in the cortical gray matter. This may represent a potential target for postnatal therapy to reduce the incidence and/or severity of neurodevelopmental disorders in preterm infants.
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Affiliation(s)
- Helen B Stolp
- Department for Comparative Biomedical Sciences, Royal Veterinary College, London, United Kingdom.,Department of Perinatal Imaging & Health, Centre for the Developing Brain, School of Biomedical Engineering and Imaging Science, King's College London, London, United Kingdom
| | - Bobbi Fleiss
- Department of Perinatal Imaging & Health, Centre for the Developing Brain, School of Biomedical Engineering and Imaging Science, King's College London, London, United Kingdom.,Université de Paris, NeuroDiderot, Inserm, Paris, France.,School of Health and Biomedical Sciences, RMIT University, Melbourne, VIC, Australia
| | - Yoko Arai
- Université de Paris, NeuroDiderot, Inserm, Paris, France
| | - Veena Supramaniam
- Department of Perinatal Imaging & Health, Centre for the Developing Brain, School of Biomedical Engineering and Imaging Science, King's College London, London, United Kingdom
| | - Regina Vontell
- Department of Perinatal Imaging & Health, Centre for the Developing Brain, School of Biomedical Engineering and Imaging Science, King's College London, London, United Kingdom.,Department of Neurology, University of Miami, Miller School of Medicine, Miami, FL, United States
| | - Sebastian Birtles
- Department of Perinatal Imaging & Health, Centre for the Developing Brain, School of Biomedical Engineering and Imaging Science, King's College London, London, United Kingdom
| | - Abi G Yates
- Department of Perinatal Imaging & Health, Centre for the Developing Brain, School of Biomedical Engineering and Imaging Science, King's College London, London, United Kingdom.,Department of Pharmacology, University of Oxford, Oxford, United Kingdom
| | - Ana A Baburamani
- Department of Perinatal Imaging & Health, Centre for the Developing Brain, School of Biomedical Engineering and Imaging Science, King's College London, London, United Kingdom
| | - Claire Thornton
- Department for Comparative Biomedical Sciences, Royal Veterinary College, London, United Kingdom.,Department of Perinatal Imaging & Health, Centre for the Developing Brain, School of Biomedical Engineering and Imaging Science, King's College London, London, United Kingdom
| | - Mary Rutherford
- Department of Perinatal Imaging & Health, Centre for the Developing Brain, School of Biomedical Engineering and Imaging Science, King's College London, London, United Kingdom
| | - A David Edwards
- Department of Perinatal Imaging & Health, Centre for the Developing Brain, School of Biomedical Engineering and Imaging Science, King's College London, London, United Kingdom
| | - Pierre Gressens
- Department of Perinatal Imaging & Health, Centre for the Developing Brain, School of Biomedical Engineering and Imaging Science, King's College London, London, United Kingdom.,Université de Paris, NeuroDiderot, Inserm, Paris, France
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41
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Protective effects of delayed intraventricular TLR7 agonist administration on cerebral white and gray matter following asphyxia in the preterm fetal sheep. Sci Rep 2019; 9:9562. [PMID: 31267031 PMCID: PMC6606639 DOI: 10.1038/s41598-019-45872-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Accepted: 06/13/2019] [Indexed: 01/08/2023] Open
Abstract
Preterm brain injury is highly associated with inflammation, which is likely related in part to sterile responses to hypoxia-ischemia. We have recently shown that neuroprotection with inflammatory pre-conditioning in the immature brain is associated with induction of toll-like receptor 7 (TLR7). We therefore tested the hypothesis that central administration of a synthetic TLR7 agonist, gardiquimod (GDQ), after severe hypoxia-ischemia in preterm-equivalent fetal sheep would improve white and gray matter recovery. Fetal sheep at 0.7 of gestation received sham asphyxia or asphyxia induced by umbilical cord occlusion for 25 minutes, followed by a continuous intracerebroventricular infusion of GDQ or vehicle from 1 to 4 hours (total dose 1.8 mg/kg). Sheep were killed 72 hours after asphyxia for histology. GDQ significantly improved survival of immature and mature oligodendrocytes (2′,3′-cyclic-nucleotide 3′-phosphodiesterase, CNPase) and total oligodendrocytes (oligodendrocyte transcription factor 2, Olig-2) within the periventricular and intragyral white matter. There were reduced numbers of cells showing cleaved caspase-3 positive apoptosis and astrogliosis (glial fibrillary acidic protein, GFAP) in both white matter regions. Neuronal survival was increased in the dentate gyrus, caudate and medial thalamic nucleus. Central infusion of GDQ was associated with a robust increase in fetal plasma concentrations of the anti-inflammatory cytokines, interferon-β (IFN-β) and interleukin-10 (IL-10), with no significant change in the concentration of the pro-inflammatory cytokine, tumor necrosis factor-α (TNF-α). In conclusion, delayed administration of the TLR7 agonist, GDQ, after severe hypoxia-ischemia in the developing brain markedly ameliorated white and gray matter damage, in association with upregulation of anti-inflammatory cytokines. These data strongly support the hypothesis that modulation of secondary inflammation may be a viable therapeutic target for injury of the preterm brain.
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42
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Microorganisms in the Placenta: Links to Early-Life Inflammation and Neurodevelopment in Children. Clin Microbiol Rev 2019; 32:32/3/e00103-18. [PMID: 31043389 DOI: 10.1128/cmr.00103-18] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Prenatal exposure to various stressors can influence both early and later life childhood health. Microbial infection of the intrauterine environment, specifically within the placenta, has been associated with deleterious birth outcomes, such as preterm birth, as well as adverse neurological outcomes later in life. The relationships among microorganisms in the placenta, placental function, and fetal development are not well understood. Microorganisms have been associated with perinatal inflammatory responses that have the potential for disrupting fetal brain development. Microbial presence has also been associated with epigenetic modifications in the placenta, as well other tissues. Here we review research detailing the presence of microorganisms in the placenta and associations among such microorganisms, placental DNA methylation, perinatal inflammation, and neurodevelopmental outcomes.
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43
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Kyriklaki A, Margetaki K, Kampouri M, Koutra K, Bitsios P, Chalkiadaki G, Dermitzaki E, Venihaki M, Sarri K, Anousaki D, Kogevinas M, Chatzi L. Association between high levels of inflammatory markers and cognitive outcomes at 4 years of age: The Rhea mother-child cohort study, Crete, Greece. Cytokine 2019; 117:1-7. [PMID: 30772773 PMCID: PMC8801160 DOI: 10.1016/j.cyto.2019.01.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2018] [Revised: 12/28/2018] [Accepted: 01/16/2019] [Indexed: 01/01/2023]
Abstract
There is growing evidence associating inflammatory markers in complex, higher order neurological functions, such as cognition and memory. We examined whether high levels of various inflammatory markers are associated with cognitive outcomes at 4 years of age in a mother-child cohort in Crete, Greece (Rhea study). We included 642 children in this cross-sectional study. Levels of several inflammatory markers (IFN-γ, IL-1β, IL-6, IL-8, IL-17α, IL-10, MIP-1α, TNF-α and the ratios of IL-6 to IL-10 and TNF-α to IL-10) were determined in child serum via immunoassay. Neurodevelopment at 4 years was assessed by means of the McCarthy Scales of Children's Abilities. Multivariate linear regression analyses were used to estimate the associations between the exposures and outcomes of interest after adjustment for various confounders. Our results indicate that children with high TNF-α concentrations (≥90th percentile) in serum demonstrated decreased scores in memory (adjusted β = -4.0; 95% CI: -7.7, -0.2), working memory (adjusted β = -4.0; 95% CI: -8.0, -0.1) as well as in memory span scale (adjusted β = -4.0; 95% CI: -7.9, -0.1). We also found that children with high IFN-γ serum levels showed lower scores in memory span scale (adjusted β = -3.4; 95% CI: -7.3, -0.4). Children with elevated TNF-α/IL-10 ratio demonstrated decreased quantitative (adjusted β = -4.3; 95% CI: -8.2, -0.4), motor (adjusted β = -3.5; 95% CI: -7.5, -0.5), executive function (adjusted β = -4.8; 95% CI: -8.5, -1.1), general cognitive (adjusted β = -3.6; 95% CI: -7.3, -0.1), memory (adjusted β = -3.8; 95% CI: -7.6, -0), working memory (adjusted β = -3.5; 95% CI: -7.5, -0.5) and memory span scores (adjusted β = -5.3; 95% CI: -9.1, -1.4) The findings suggest that high levels of TNF-α may contribute to reduced memory performance at preschool age.
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Affiliation(s)
- Andriani Kyriklaki
- Department of Social Medicine, Faculty of Medicine, University of Crete, Heraklion, Crete, Greece.
| | - Katerina Margetaki
- Department of Social Medicine, Faculty of Medicine, University of Crete, Heraklion, Crete, Greece
| | - Mariza Kampouri
- Department of Social Medicine, Faculty of Medicine, University of Crete, Heraklion, Crete, Greece
| | - Katerina Koutra
- Department of Social Medicine, Faculty of Medicine, University of Crete, Heraklion, Crete, Greece
| | - Panos Bitsios
- Department of Psychiatry & Behavioral Sciences, Faculty of Medicine, University of Crete, Heraklion, Crete, Greece
| | - Georgia Chalkiadaki
- Department of Social Medicine, Faculty of Medicine, University of Crete, Heraklion, Crete, Greece
| | - Eirini Dermitzaki
- Department of Clinical Chemistry, Faculty of Medicine, University of Crete, Heraklion, Crete, Greece
| | - Maria Venihaki
- Department of Clinical Chemistry, Faculty of Medicine, University of Crete, Heraklion, Crete, Greece
| | - Katerina Sarri
- Department of Social Medicine, Faculty of Medicine, University of Crete, Heraklion, Crete, Greece
| | - Despoina Anousaki
- Department of Social Medicine, Faculty of Medicine, University of Crete, Heraklion, Crete, Greece
| | - Manolis Kogevinas
- ISGlobal, Centre for Research in Environmental Epidemiology (CREAL), Barcelona, Spain; Hospital del Mar Medical Research Institute (IMIM), Barcelona, Spain; Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública (CIBERESP), Spain
| | - Leda Chatzi
- Department of Social Medicine, Faculty of Medicine, University of Crete, Heraklion, Crete, Greece; Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, USA
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44
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Ross GS, Perlman JM. Relationships of biological and environmental factors to cognition of preterm infants in the toddler and preschool periods. Dev Psychobiol 2019; 61:1100-1106. [PMID: 31020661 DOI: 10.1002/dev.21855] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Revised: 02/25/2019] [Accepted: 03/06/2019] [Indexed: 01/12/2023]
Abstract
One hundred and nine preterm infants were studied to examine the relative effects of biologic/neurologic factors (length of hospital stay, 18 month cognitive status) and environment (socioeconomic status) on cognition in the toddler (18 months) and preschool periods (3 years). Length of hospital stay was significantly related to toddler cognitive outcome, and less so to preschool outcome. Socioeconomic status predicted only preschool cognitive outcome and not toddler outcome. Cognitive status at 18 months significantly predicted 3 year outcome, and there was relatively little change between those periods. Together, cognitive status at 18 months and socioeconomic status significantly predicted preschool IQ, accounting for 34% of the variance. Results showed that perinatal biologic risks became less salient while socioeconomic status became increasingly important at the preschool period. Relative lack of change in cognitive status indicated the importance of early cognitive evaluation in preterm infants.
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Affiliation(s)
- Gail S Ross
- Newborn Medicine, Weill Cornell Medical College, New York, New York
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45
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Yellowhair TR, Noor S, Mares B, Jose C, Newville JC, Maxwell JR, Northington FJ, Milligan ED, Robinson S, Jantzie LL. Chorioamnionitis in Rats Precipitates Extended Postnatal Inflammatory Lymphocyte Hyperreactivity. Dev Neurosci 2019; 40:1-11. [PMID: 30921800 PMCID: PMC6765467 DOI: 10.1159/000497273] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Accepted: 01/25/2019] [Indexed: 12/16/2022] Open
Abstract
Preterm birth is an important cause of perinatal brain injury (PBI). Neurological injury in extremely preterm infants often begins in utero with chorioamnionitis (CHORIO) or inflammation/infection of the placenta and concomitant placental insufficiency. Studies in humans have shown dysregulated inflammatory signaling throughout the placental-fetal brain axis and altered peripheral immune responses in children born preterm with cerebral palsy (CP). We hypothesized that peripheral immune responses would be altered in our well-established rat model of CP. Specifically, we proposed that isolated peripheral blood mononuclear cells (PBMCs) would be hyperresponsive to a second hit of inflammation throughout an extended postnatal time course. Pregnant Sprague-Dawley dams underwent a laparotomy on embryonic day 18 (E18) with occlusion of the uterine arteries (for 60 min) followed by intra-amniotic injection of lipopolysaccharide (LPS, 4 μg/sac) to induce injury in utero. Shams underwent laparotomy only, with equivalent duration of anesthesia. Laparotomies were then closed, and the rat pups were born at E22. PBMCs were isolated from pups on postnatal day 7 (P7) and P21, and subsequently stimulated in vitro with LPS for 3 or 24 h. A secreted inflammatory profile analysis of conditioned media was performed using multiplex electrochemiluminescent immunoassays, and the composition of inflammatory cells was assayed with flow cytometry (FC). Results indicate that CHORIO PBMCs challenged with LPS are hyperreactive and secrete significantly more tumor necrosis factor α (TNFα) and C-X-C chemokine ligand 1 at P7. FC confirmed increased intracellular TNFα in CHORIO pups at P7 following LPS stimulation, in addition to increased numbers of CD11b/c immunopositive myeloid cells. Notably, TNFα secretion was sustained until P21, with increased interleukin 6, concomitant with increased expression of integrin β1, suggesting both sustained peripheral immune hyperreactivity and a heightened activation state. Taken together, these data indicate that in utero injury primes the immune system and augments enhanced inflammatory signaling. The insidious effects of primed peripheral immune cells may compound PBI secondary to CHORIO and/or placental insufficiency, and thereby render the brain susceptible to future chronic neurological disease. Further understanding of inflammatory mechanisms in PBI may yield clinically important biomarkers and facilitate individualized repair strategies and treatments.
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Affiliation(s)
- Tracylyn R Yellowhair
- Department of Pediatrics, University of New Mexico School of Medicine, Albuquerque, New Mexico, USA
| | - Shahani Noor
- Department of Neurosciences, University of New Mexico School of Medicine, Albuquerque, New Mexico, USA
| | - Brittney Mares
- Department of Pediatrics, University of New Mexico School of Medicine, Albuquerque, New Mexico, USA
| | - Clement Jose
- Department of Pediatrics, University of New Mexico School of Medicine, Albuquerque, New Mexico, USA
| | - Jessie C Newville
- Department of Pediatrics, University of New Mexico School of Medicine, Albuquerque, New Mexico, USA
- Department of Neurosciences, University of New Mexico School of Medicine, Albuquerque, New Mexico, USA
| | - Jessie R Maxwell
- Department of Pediatrics, University of New Mexico School of Medicine, Albuquerque, New Mexico, USA
- Department of Neurosciences, University of New Mexico School of Medicine, Albuquerque, New Mexico, USA
| | - Frances J Northington
- Division of Newborn Medicine, Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Erin D Milligan
- Department of Neurosciences, University of New Mexico School of Medicine, Albuquerque, New Mexico, USA
| | - Shenandoah Robinson
- Division of Pediatric Neurosurgery, Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Lauren L Jantzie
- Department of Pediatrics, University of New Mexico School of Medicine, Albuquerque, New Mexico, USA,
- Department of Neurosciences, University of New Mexico School of Medicine, Albuquerque, New Mexico, USA,
- Division of Newborn Medicine, Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA,
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46
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Adverse neuropsychiatric development following perinatal brain injury: from a preclinical perspective. Pediatr Res 2019; 85:198-215. [PMID: 30367160 DOI: 10.1038/s41390-018-0222-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Revised: 10/11/2018] [Accepted: 10/15/2018] [Indexed: 02/06/2023]
Abstract
Perinatal brain injury is a leading cause of death and disability in young children. Recent advances in obstetrics, reproductive medicine and neonatal intensive care have resulted in significantly higher survival rates of preterm or sick born neonates, at the price of increased prevalence of neurological, behavioural and psychiatric problems in later life. Therefore, the current focus of experimental research shifts from immediate injury processes to the consequences for brain function in later life. The aetiology of perinatal brain injury is multi-factorial involving maternal and also labour-associated factors, including not only placental insufficiency and hypoxia-ischaemia but also exposure to high oxygen concentrations, maternal infection yielding excess inflammation, genetic factors and stress as important players, all of them associated with adverse long-term neurological outcome. Several animal models addressing these noxious stimuli have been established in the past to unravel the underlying molecular and cellular mechanisms of altered brain development. In spite of substantial efforts to investigate short-term consequences, preclinical evaluation of the long-term sequelae for the development of cognitive and neuropsychiatric disorders have rarely been addressed. This review will summarise and discuss not only current evidence but also requirements for experimental research providing a causal link between insults to the developing brain and long-lasting neurodevelopmental disorders.
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47
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Abstract
Despite notable advances in the care and survival of preterm infants, a significant proportion of preterm neonates will have life-long cognitive, behavioral, and motor deficits, and robustly effective neuroprotective strategies are still missing. These therapies must target the pathophysiologic mechanisms observed in contemporaneous infants and rely on modern epidemiology, imaging, and experimental models and assessment techniques. Two drugs, magnesium sulfate and caffeine, are already in use in several units, and although their targets are apnea of prematurity and myometrial contractility (respectively), they do offer improved odds of positive outcomes. Nevertheless, these drugs have limited efficacy, and NICU-to-NICU administration varies greatly. As such, there is an obvious need for additional specific neurotherapeutic strategies to further enhance the outcome of this very fragile population of neonates. The chapter reviews these issues, highlights bottlenecks that need to be solved for meaningful progress in the field, and proposes future innovative avenues for intervention, including delayed interventions.
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Affiliation(s)
- Bobbi Fleiss
- NeuroDiderot, INSERM, Université Paris Diderot, Sorbonne Paris Cité, Paris, France; Division of Imaging Sciences and Biomedical Engineering, Centre for the Developing Brain, King's College London, London, United Kingdom
| | - Pierre Gressens
- NeuroDiderot, INSERM, Université Paris Diderot, Sorbonne Paris Cité, Paris, France; Division of Imaging Sciences and Biomedical Engineering, Centre for the Developing Brain, King's College London, London, United Kingdom.
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48
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Neuroinflammation in preterm babies and autism spectrum disorders. Pediatr Res 2019; 85:155-165. [PMID: 30446768 DOI: 10.1038/s41390-018-0208-4] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Revised: 09/25/2018] [Accepted: 09/25/2018] [Indexed: 12/23/2022]
Abstract
Genetic anomalies have a role in autism spectrum disorders (ASD). Each genetic factor is responsible for a small fraction of cases. Environment factors, like preterm delivery, have an important role in ASD. Preterm infants have a 10-fold higher risk of developing ASD. Preterm birth is often associated with maternal/fetal inflammation, leading to a fetal/neonatal inflammatory syndrome. There are demonstrated experimental links between fetal inflammation and the later development of behavioral symptoms consistent with ASD. Preterm infants have deficits in connectivity. Most ASD genes encode synaptic proteins, suggesting that ASD are connectivity pathologies. Microglia are essential for normal synaptogenesis. Microglia are diverted from homeostatic functions towards inflammatory phenotypes during perinatal inflammation, impairing synaptogenesis. Preterm infants with ASD have a different phenotype from term born peers. Our original hypothesis is that exposure to inflammation in preterm infants, combined with at risk genetic background, deregulates brain development leading to ASD.
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49
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Nist MD, Harrison TM, Steward DK. The biological embedding of neonatal stress exposure: A conceptual model describing the mechanisms of stress-induced neurodevelopmental impairment in preterm infants. Res Nurs Health 2018; 42:61-71. [PMID: 30499161 DOI: 10.1002/nur.21923] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Accepted: 10/27/2018] [Indexed: 12/15/2022]
Abstract
The biological embedding of early life stress exposure may result in life-long neurodevelopmental impairment in preterm infants. Infants hospitalized in the neonatal intensive care unit are exposed to significant experiential, environmental, and physiologic stressors over the course of their extended hospitalization. Stress exposure during the sensitive period of brain development may alter biological processes, including functioning of the immune system, the autonomic nervous system, and the hypothalamic-pituitary-adrenal axis as well as gene expression. These alterations may subsequently affect brain structure and function. Changes to these processes may mediate the relationship between neonatal stress exposure and neurodevelopment in preterm infants and represent potential therapeutic targets to improve long-term outcomes. The purpose of this paper is to introduce a conceptual model, based on published research, that describes the mechanisms mediating stress exposure and neurodevelopment impairment in preterm infants and to provide the theoretical foundation on which to base future descriptive research, intervention studies, and clinical care.
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50
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Colella M, Zinni M, Pansiot J, Cassanello M, Mairesse J, Ramenghi L, Baud O. Modulation of Microglial Activation by Adenosine A2a Receptor in Animal Models of Perinatal Brain Injury. Front Neurol 2018; 9:605. [PMID: 30254599 PMCID: PMC6141747 DOI: 10.3389/fneur.2018.00605] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Accepted: 07/06/2018] [Indexed: 12/19/2022] Open
Abstract
Neuroinflammation has a key role in the pathogenesis of perinatal brain injury. Caffeine, a nonspecific antagonist of adenosine receptors (ARs), is widely used to treat apnea of prematurity and has been linked to a decrease in the incidence of cerebral palsy in premature infants. The mechanisms explaining its neuroprotective effect have not yet been elucidated. The objective of this study was to characterize the expression of adenosine and ARs in two neonatal rat models of neuroinflammation and to determine the effect of A2aR blockade on microglial activation assessed through inflammatory cytokine gene expression. We have used two rat models of microglial activation: the gestational low protein diet (LPD) model, associated with chronic brain injury, and postnatal ibotenate intracerebral injections, responsible for acute excitotoxicity injury. Adenosine blood levels have been measured by Tandem Mass Spectrometry. The expression of ARs in vivo was assessed using qPCR and immunohistochemistry. In vivo models have been replicated in vitro on primary microglial cell cultures exposed to A2aR agonist CGS-21680 or antagonist SCH-58261. The effects of these treatments have been assessed on the M1/M2 cytokine expressions measured by RT-qPCR. LPD during pregnancy was associated with higher adenosine levels in pups at postnatal day 1 and 4. A2aR mRNA expression was significantly increased in both cortex and magnetically sorted microglial cells from LPD animals compared to controls. CD73 expression, responsible for extracellular production of brain adenosine, was significantly increased in LPD cortex and sorted microglia cells. Moreover, CD73 protein level was increased in ibotenate treated animals. In vitro experiments confirmed that LPD or control microglial cells exposed to ibotenate display an increased expression, at both protein and molecular levels, of A2aR and M1 markers (IL-1β, IL-6, iNOS, TNFα). This pro-inflammatory profile was significantly reduced by SCH-58261, which reduces M1 markers in both LPD and ibotenate-exposed cells, with no effect on control cells. In the same experimental conditions, a partial increased of M1 cytokines was observed in response to A2aR agonist CGS-21680. These results support the involvement of adenosine and particularly of its receptor A2aR in the regulation of microglia in two different animal models of neuroinflammation.
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Affiliation(s)
- Marina Colella
- Robert Debré Hospital, PROTECT, Inserm U1141, Paris, France.,Istituto G. Gaslini, Università di Genova, Genoa, Italy
| | - Manuela Zinni
- Robert Debré Hospital, PROTECT, Inserm U1141, Paris, France
| | - Julien Pansiot
- Robert Debré Hospital, PROTECT, Inserm U1141, Paris, France
| | - Michela Cassanello
- Laboratory for the Study of Inborn Errors of Metabolism, Istituto Giannina Gaslini, Genoa, Italy
| | - Jérôme Mairesse
- Robert Debré Hospital, PROTECT, Inserm U1141, Paris, France.,Division of Neonatology and Pediatric Intensive Care, Children's University Hospital of Geneva, University of Geneva, Geneva, Switzerland
| | - Luca Ramenghi
- Neonatal Intensive Care Unit, Istituto Giannina Gaslini, Genoa, Italy
| | - Olivier Baud
- Robert Debré Hospital, PROTECT, Inserm U1141, Paris, France.,Division of Neonatology and Pediatric Intensive Care, Children's University Hospital of Geneva, University of Geneva, Geneva, Switzerland
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