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Oxidative Stress as a Physiological Pain Response in Full-Term Newborns. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017; 2017:3759287. [PMID: 28133505 PMCID: PMC5241471 DOI: 10.1155/2017/3759287] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Revised: 11/29/2016] [Accepted: 12/07/2016] [Indexed: 11/23/2022]
Abstract
This research paper aims to investigate if oxidative stress biomarkers increase after a painful procedure in term newborns and if nonpharmacological approaches, or sex, influence pain degree, and the subsequent OS. 83 healthy term newborns were enrolled to receive 10% oral glucose or sensorial saturation (SS) for analgesia during heel prick (HP). The ABC scale was used to score the pain. Advanced oxidation protein products (AOPP) and total hydroperoxides (TH) as biomarkers of OS were measured at the beginning (early-sample) and at the end (late-sample) of HP. The early-sample/late-sample ratio for AOPP and TH was used to evaluate the increase in OS biomarkers after HP. Higher levels of both AOPP and TH ratio were observed in high degree pain (4–6) compared with low degree pain score (0–3) (AOPP: p = 0.049; TH: p = 0.001). Newborns receiving SS showed a significantly lower pain score (p = 0.000) and AOPP ratio levels (p = 0.021) than those without. Males showed higher TH levels at the end of HP (p = 0.005) compared to females. The current study demonstrates that a relationship between pain degree and OS exists in healthy full-term newborns. The amount of OS is gender related, being higher in males. SS reduces pain score together with pain-related OS in the newborns.
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Rosa MJ, Just AC, Guerra MS, Kloog I, Hsu HHL, Brennan KJ, García AM, Coull B, Wright RJ, Téllez Rojo MM, Baccarelli AA, Wright RO. Identifying sensitive windows for prenatal particulate air pollution exposure and mitochondrial DNA content in cord blood. ENVIRONMENT INTERNATIONAL 2017; 98:198-203. [PMID: 27843010 PMCID: PMC5139686 DOI: 10.1016/j.envint.2016.11.007] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Revised: 10/12/2016] [Accepted: 11/04/2016] [Indexed: 05/06/2023]
Abstract
INTRODUCTION Changes in mitochondrial DNA (mtDNA) can serve as a marker of cumulative oxidative stress (OS) due to the mitochondria's unique genome and relative lack of repair systems. In utero particulate matter ≤2.5μm (PM2.5) exposure can enhance oxidative stress. Our objective was to identify sensitive windows to predict mtDNA damage experienced in the prenatal period due to PM2.5 exposure using mtDNA content measured in cord blood. MATERIAL AND METHODS Women affiliated with the Mexican social security system were recruited during pregnancy in the Programming Research in Obesity, Growth, Environment and Social Stressors (PROGRESS) study. Mothers with cord blood collected at delivery and complete covariate data were included (n=456). Mothers' prenatal daily exposure to PM2.5 was estimated using a satellite-based spatio-temporally resolved prediction model and place of residence during pregnancy. DNA was extracted from umbilical cord leukocytes. Quantitative real-time polymerase chain reaction (qPCR) was used to determine mtDNA content. A distributive lag regression model (DLM) incorporating weekly averages of daily PM2.5 predictions was constructed to plot the association between exposure and OS over the length of pregnancy. RESULTS In models that included child's sex, mother's age at delivery, prenatal environmental tobacco smoke exposure, birth year, maternal education, and assay batch, we found significant associations between higher PM2.5 exposure during late pregnancy (35-40weeks) and lower mtDNA content in cord blood. CONCLUSIONS Increased PM2.5 during a specific prenatal window in the third trimester was associated with decreased mtDNA content suggesting heightened sensitivity to PM-induced OS during this life stage.
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Affiliation(s)
- Maria José Rosa
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
| | - Allan C Just
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
| | - Marco Sánchez Guerra
- Department of Neurobiology, National Institute of Perinatology, Mexico City, Mexico.
| | - Itai Kloog
- Department of Geography and Environmental Development, Ben-Gurion University of the Negev, P.O.B. 653, Beer Sheva, Israel.
| | - Hsiao-Hsien Leon Hsu
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
| | - Kasey J Brennan
- Department of Environmental Health Sciences, Columbia University Mailman School of Public Health, New York, NY, USA.
| | - Adriana Mercado García
- Center for Nutrition and Health Research, National Institute of Public Health, Ministry of Health, Cuernavaca, Morelos, Mexico.
| | - Brent Coull
- Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA, USA.
| | - Rosalind J Wright
- Kravis Children's Hospital, Department of Pediatrics, Icahn School of Medicine at Mount Sinai, New York, NY, USA; Mindich Child Health and Development Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
| | - Martha María Téllez Rojo
- Center for Nutrition and Health Research, National Institute of Public Health, Ministry of Health, Cuernavaca, Morelos, Mexico.
| | - Andrea A Baccarelli
- Department of Environmental Health Sciences, Columbia University Mailman School of Public Health, New York, NY, USA.
| | - Robert O Wright
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA; Mindich Child Health and Development Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
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Lee A, Wright RJ. Prenatal stress and childhood asthma risk: taking a broader view. Eur Respir J 2016; 47:406-9. [PMID: 26828054 DOI: 10.1183/13993003.01921-2015] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Alison Lee
- Division of Pulmonary, Critical Care and Sleep Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Rosalind J Wright
- Dept of Pediatrics, Kravis Children's Hospital, Icahn School of Medicine at Mount Sinai, New York, NY, USA The Mindich Child Health and Development Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
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De Felice A, Greco A, Calamandrei G, Minghetti L. Prenatal exposure to the organophosphate insecticide chlorpyrifos enhances brain oxidative stress and prostaglandin E2 synthesis in a mouse model of idiopathic autism. J Neuroinflammation 2016; 13:149. [PMID: 27301868 PMCID: PMC4908699 DOI: 10.1186/s12974-016-0617-4] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Accepted: 06/07/2016] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Autism spectrum disorders (ASD) are emerging as polygenic and multifactorial disorders in which complex interactions between defective genes and early exposure to environmental stressors impact on the correct neurodevelopment and brain processes. Organophosphate insecticides, among which chlorpyrifos (CPF), are widely diffused environmental toxicants associated with neurobehavioral deficits and increased risk of ASD occurrence in children. Oxidative stress and dysregulated immune responses are implicated in both organophosphate neurodevelopmental effects and ASD etiopathogenesis. BTBR T+tf/J mice, a well-studied model of idiopathic autism, show several behavioral and immunological alterations found in ASD children, and we recently showed that CPF gestational exposure strengthened some of these autistic-like traits. In the present study, we aimed at investigating whether the behavioral effects of gestational CPF administration are associated with brain increased oxidative stress and altered lipid mediator profile. METHODS Brain levels of F2-isoprostanes (15-F2t-IsoP), as index of in vivo oxidative stress, and prostaglandin E2 (PGE2), a major arachidonic acid metabolite released by immune cells and by specific glutamatergic neuron populations mainly in cortex and hippocampus, were assessed by specific enzyme-immuno assays in brain homogenates from BTBR T+tf/J and C57Bl6/J mice, exposed during gestation to either vehicle or CPF. Measures were performed in mice of both sexes, at different postnatal stages (PNDs 1, 21, and 70). RESULTS At birth, BTBR T+tf/J mice exhibited higher baseline 15-F2t-IsoP levels as compared to C57Bl6/J mice, suggestive of greater oxidative stress processes. Gestational treatment with CPF-enhanced 15-F2t-IsoP and PGE2 levels in strain- and age-dependent manner, with 15-F2t-IsoP increased in BTBR T+tf/J mice at PNDs 1 and 21, and PGE2 elevated in BTBR T+tf/J mice at PNDs 21 and 70. At PND 21, CPF effects were sex-dependent being the increase of the two metabolites mainly associated with male mice. CPF treatment also induced a reduction of somatic growth, which reached statistical significance at PND 21. CONCLUSIONS These findings indicate that the autistic-like BTBR T+tf/J strain is highly vulnerable to environmental stressors during gestational period. The results further support the hypothesis that oxidative stress might be the link between environmental neurotoxicants such as CPF and ASD. The increased levels of oxidative stress during early postnatal life could result in delayed and long-lasting alterations in specific pathways relevant to ASD, of which PGE2 signaling represents an important one.
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Affiliation(s)
- Alessia De Felice
- Section of Neurotoxicology and Neuroendocrinology, Department of Cell Biology and Neurosciences, Istituto Superiore di Sanità, Viale Regina Elena 299, I-00161, Rome, Italy
- Present address: Center for Neuroscience and Cognitive Systems @UniTn, Istituto Italiano di Tecnologia, Via Bettini 31, 38068, Rovereto (TN), Italy
| | - Anita Greco
- Section of Experimental Neurology, Department of Cell Biology and Neurosciences, Istituto Superiore di Sanità, Viale Regina Elena 299, I-00161, Rome, Italy
| | - Gemma Calamandrei
- Section of Neurotoxicology and Neuroendocrinology, Department of Cell Biology and Neurosciences, Istituto Superiore di Sanità, Viale Regina Elena 299, I-00161, Rome, Italy
| | - Luisa Minghetti
- Section of Experimental Neurology, Department of Cell Biology and Neurosciences, Istituto Superiore di Sanità, Viale Regina Elena 299, I-00161, Rome, Italy.
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Lee A, Mathilda Chiu YH, Rosa MJ, Jara C, Wright RO, Coull BA, Wright RJ. Prenatal and postnatal stress and asthma in children: Temporal- and sex-specific associations. J Allergy Clin Immunol 2016; 138:740-747.e3. [PMID: 26953156 DOI: 10.1016/j.jaci.2016.01.014] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Revised: 12/22/2015] [Accepted: 01/07/2016] [Indexed: 10/22/2022]
Abstract
BACKGROUND Temporal- and sex-specific effects of perinatal stress have not been examined for childhood asthma. OBJECTIVES We examined associations between prenatal and/or postnatal stress and children's asthma (n = 765) and effect modification by sex in a prospective cohort study. METHODS Maternal negative life events were ascertained prenatally and postpartum. Negative life event scores were categorized as 0, 1 to 2, 3 to 4, or 5 or greater to assess exposure-response relationships. We examined effects of prenatal and postnatal stress on children's asthma by age 6 years, modeling each as independent predictors, mutually adjusting for prenatal and postnatal stress, and finally considering interactions between prenatal and postnatal stress. Effect modification by sex was examined in stratified analyses and by fitting interaction terms. RESULTS When considering stress in each period independently, among boys, a dose-response relationship was evident for each level increase on the ordinal scale prenatally (odds ratio [OR], 1.38; 95% CI, 1.06-1.79; P value for trend = .03) and postnatally (OR, 1.53; 95% CI, 1.16-2.01; P value for trend = .001); among girls, only the postnatal trend was significant (OR, 1.60; 95% CI, 1.14-2.22; P value for trend = .005). Higher stress in both the prenatal and postnatal periods was associated with increased odds of receiving a diagnosis of asthma in girls (OR, 1.37; 95% CI, 0.98-1.91; Pinteraction = .07) but not boys (OR, 1.08; 95% CI, 0.82-1.42; Pinteraction = .61). CONCLUSIONS Although boys were more vulnerable to stress during the prenatal period, girls were more affected by postnatal stress and cumulative stress across both periods in relation to asthma. Understanding sex and temporal differences in response to early-life stress might provide unique insight into the cause and natural history of asthma.
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Affiliation(s)
- Alison Lee
- Division of Pulmonary, Critical Care and Sleep Medicine, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Yueh-Hsiu Mathilda Chiu
- Department of Pediatrics, Kravis Children's Hospital, Icahn School of Medicine at Mount Sinai, New York, NY; Department of Preventive Medicine, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Maria José Rosa
- Department of Preventive Medicine, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Calvin Jara
- Department of Preventive Medicine, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Robert O Wright
- Department of Preventive Medicine, Icahn School of Medicine at Mount Sinai, New York, NY; Mindich Child Health & Development Institute, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Brent A Coull
- Department of Biostatistics, Harvard School of Public Health, Boston, Mass; Department of Environmental Health, Harvard School of Public Health, Boston, Mass
| | - Rosalind J Wright
- Department of Pediatrics, Kravis Children's Hospital, Icahn School of Medicine at Mount Sinai, New York, NY; Mindich Child Health & Development Institute, Icahn School of Medicine at Mount Sinai, New York, NY.
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Dogan C, De Antonio M, Hamroun D, Varet H, Fabbro M, Rougier F, Amarof K, Arne Bes MC, Bedat-Millet AL, Behin A, Bellance R, Bouhour F, Boutte C, Boyer F, Campana-Salort E, Chapon F, Cintas P, Desnuelle C, Deschamps R, Drouin-Garraud V, Ferrer X, Gervais-Bernard H, Ghorab K, Laforet P, Magot A, Magy L, Menard D, Minot MC, Nadaj-Pakleza A, Pellieux S, Pereon Y, Preudhomme M, Pouget J, Sacconi S, Sole G, Stojkovich T, Tiffreau V, Urtizberea A, Vial C, Zagnoli F, Caranhac G, Bourlier C, Riviere G, Geille A, Gherardi RK, Eymard B, Puymirat J, Katsahian S, Bassez G. Gender as a Modifying Factor Influencing Myotonic Dystrophy Type 1 Phenotype Severity and Mortality: A Nationwide Multiple Databases Cross-Sectional Observational Study. PLoS One 2016; 11:e0148264. [PMID: 26849574 PMCID: PMC4744025 DOI: 10.1371/journal.pone.0148264] [Citation(s) in RCA: 100] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2014] [Accepted: 01/16/2016] [Indexed: 01/06/2023] Open
Abstract
Background Myotonic Dystrophy type 1 (DM1) is one of the most heterogeneous hereditary disease in terms of age of onset, clinical manifestations, and severity, challenging both medical management and clinical trials. The CTG expansion size is the main factor determining the age of onset although no factor can finely predict phenotype and prognosis. Differences between males and females have not been specifically reported. Our aim is to study gender impact on DM1 phenotype and severity. Methods We first performed cross-sectional analysis of main multiorgan clinical parameters in 1409 adult DM1 patients (>18y) from the DM-Scope nationwide registry and observed different patterns in males and females. Then, we assessed gender impact on social and economic domains using the AFM-Téléthon DM1 survey (n = 970), and morbidity and mortality using the French National Health Service Database (n = 3301). Results Men more frequently had (1) severe muscular disability with marked myotonia, muscle weakness, cardiac, and respiratory involvement; (2) developmental abnormalities with facial dysmorphism and cognitive impairment inferred from low educational levels and work in specialized environments; and (3) lonely life. Alternatively, women more frequently had cataracts, dysphagia, digestive tract dysfunction, incontinence, thyroid disorder and obesity. Most differences were out of proportion to those observed in the general population. Compared to women, males were more affected in their social and economic life. In addition, they were more frequently hospitalized for cardiac problems, and had a higher mortality rate. Conclusion Gender is a previously unrecognized factor influencing DM1 clinical profile and severity of the disease, with worse socio-economic consequences of the disease and higher morbidity and mortality in males. Gender should be considered in the design of both stratified medical management and clinical trials.
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Affiliation(s)
- Celine Dogan
- Neuromuscular Reference Center, GH Henri Mondor, AP-HP, Créteil, France, INSERM U955, UPEC university, Créteil, France
| | - Marie De Antonio
- Neuromuscular Reference Center, GH Henri Mondor, AP-HP, Créteil, France, INSERM U955, UPEC university, Créteil, France
- INSERM U1138, Centre de recherche des cordeliers, Paris Descartes university, UPMC university, Paris, France
| | - Dalil Hamroun
- Direction de la Recherche et de l'Innovation, CHU Montpellier, Montpellier, France
| | - Hugo Varet
- Neuromuscular Reference Center, GH Henri Mondor, AP-HP, Créteil, France, INSERM U955, UPEC university, Créteil, France
| | - Marianne Fabbro
- Neuromuscular Reference Center, GH Henri Mondor, AP-HP, Créteil, France, INSERM U955, UPEC university, Créteil, France
| | - Felix Rougier
- Neuromuscular Reference Center, GH Henri Mondor, AP-HP, Créteil, France, INSERM U955, UPEC university, Créteil, France
| | - Khadija Amarof
- Neuromuscular Reference Center, CHU Fort-de-France, Fort de France, France
| | | | | | - Anthony Behin
- Neuromuscular Reference Center, GH Pitié-Salpêtrière, AP-HP, Paris, France
| | - Remi Bellance
- Neuromuscular Reference Center, CHU Fort-de-France, Fort de France, France
| | | | - Celia Boutte
- Neuromuscular Reference Center, CHU Grenoble, Grenoble, France
| | - François Boyer
- Neuromuscular Reference Center, CHU Reims, Reims, France
| | | | | | - Pascal Cintas
- Neuromuscular Reference Center, CHU Toulouse, Toulouse, France
| | | | - Romain Deschamps
- Neuromuscular Reference Center, CHU Fort-de-France, Fort de France, France
| | | | - Xavier Ferrer
- Neuromuscular Reference Center, CHU Bordeaux, Bordeaux, France
| | | | - Karima Ghorab
- Neuromuscular Reference Center, CHU Limoges, Limoges, France
| | - Pascal Laforet
- Neuromuscular Reference Center, GH Pitié-Salpêtrière, AP-HP, Paris, France
| | - Armelle Magot
- Neuromuscular Reference Center, CHU Nantes, Nantes, France
| | - Laurent Magy
- Neuromuscular Reference Center, CHU Limoges, Limoges, France
| | | | | | | | | | - Yann Pereon
- Neuromuscular Reference Center, CHU Nantes, Nantes, France
| | | | - Jean Pouget
- Neuromuscular Reference Center, GH Timone, AP-HM, Marseille, France
| | | | - Guilhem Sole
- Neuromuscular Reference Center, CHU Bordeaux, Bordeaux, France
| | - Tanya Stojkovich
- Neuromuscular Reference Center, GH Pitié-Salpêtrière, AP-HP, Paris, France
| | | | - Andoni Urtizberea
- Neuromuscular Reference Center, Hôpital Marin, AP-HP, Hendaye, France
| | | | - Fabien Zagnoli
- Neuromuscular Competence Center, HIA Clermont-Tonnerre, Brest, France
| | | | | | | | - Alain Geille
- CoPil, DM1 patients group, AFM-Téléthon, Evry, France
| | - Romain K. Gherardi
- Neuromuscular Reference Center, GH Henri Mondor, AP-HP, Créteil, France, INSERM U955, UPEC university, Créteil, France
| | - Bruno Eymard
- Neuromuscular Reference Center, GH Pitié-Salpêtrière, AP-HP, Paris, France
| | - Jack Puymirat
- Human Genetic Research Unit, CHU Laval, Quebec, Canada
| | - Sandrine Katsahian
- INSERM U1138, Centre de recherche des cordeliers, Paris Descartes university, UPMC university, Paris, France
| | - Guillaume Bassez
- Neuromuscular Reference Center, GH Henri Mondor, AP-HP, Créteil, France, INSERM U955, UPEC university, Créteil, France
- * E-mail:
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Chiu YHM, Hsu HHL, Coull BA, Bellinger DC, Kloog I, Schwartz J, Wright RO, Wright RJ. Prenatal particulate air pollution and neurodevelopment in urban children: Examining sensitive windows and sex-specific associations. ENVIRONMENT INTERNATIONAL 2016; 87:56-65. [PMID: 26641520 PMCID: PMC4691396 DOI: 10.1016/j.envint.2015.11.010] [Citation(s) in RCA: 176] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2015] [Revised: 11/11/2015] [Accepted: 11/11/2015] [Indexed: 05/14/2023]
Abstract
BACKGROUND Brain growth and structural organization occurs in stages beginning prenatally. Toxicants may impact neurodevelopment differently dependent upon exposure timing and fetal sex. OBJECTIVES We implemented innovative methodology to identify sensitive windows for the associations between prenatal particulate matter with diameter ≤ 2.5 μm (PM2.5) and children's neurodevelopment. METHODS We assessed 267 full-term urban children's prenatal daily PM2.5 exposure using a validated satellite-based spatio-temporally resolved prediction model. Outcomes included IQ (WISC-IV), attention (omission errors [OEs], commission errors [CEs], hit reaction time [HRT], and HRT standard error [HRT-SE] on the Conners' CPT-II), and memory (general memory [GM] index and its components - verbal [VEM] and visual [VIM] memory, and attention-concentration [AC] indices on the WRAML-2) assessed at age 6.5±0.98 years. To identify the role of exposure timing, we used distributed lag models to examine associations between weekly prenatal PM2.5 exposure and neurodevelopment. Sex-specific associations were also examined. RESULTS Mothers were primarily minorities (60% Hispanic, 25% black); 69% had ≤12 years of education. Adjusting for maternal age, education, race, and smoking, we found associations between higher PM2.5 levels at 31-38 weeks with lower IQ, at 20-26 weeks gestation with increased OEs, at 32-36 weeks with slower HRT, and at 22-40 weeks with increased HRT-SE among boys, while significant associations were found in memory domains in girls (higher PM2.5 exposure at 18-26 weeks with reduced VIM, at 12-20 weeks with reduced GM). CONCLUSIONS Increased PM2.5 exposure in specific prenatal windows may be associated with poorer function across memory and attention domains with variable associations based on sex. Refined determination of time window- and sex-specific associations may enhance insight into underlying mechanisms and identification of vulnerable subgroups.
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Affiliation(s)
- Yueh-Hsiu Mathilda Chiu
- Kravis Children's Hospital, Department of Pediatrics, Icahn School of Medicine at Mount Sinai, New York, NY, USA; Department of Preventive Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Hsiao-Hsien Leon Hsu
- Department of Preventive Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Brent A Coull
- Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA, USA; Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - David C Bellinger
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA; Department of Neurology Research, Children's Hospital Boston, Harvard Medical School, Boston, MA, USA
| | - Itai Kloog
- Department of Geography and Environmental Development, Ben-Gurion University of the Negev, Israel
| | - Joel Schwartz
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA; Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Robert O Wright
- Department of Preventive Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA; The Mindich Child Health & Development Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Rosalind J Wright
- Kravis Children's Hospital, Department of Pediatrics, Icahn School of Medicine at Mount Sinai, New York, NY, USA; The Mindich Child Health & Development Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
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Prenatal and postnatal stress and wheeze in Mexican children: Sex-specific differences. Ann Allergy Asthma Immunol 2016; 116:306-312.e1. [PMID: 26822280 DOI: 10.1016/j.anai.2015.12.025] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2015] [Revised: 12/18/2015] [Accepted: 12/22/2015] [Indexed: 01/12/2023]
Abstract
BACKGROUND Increasing evidence links early-life exposure to psychosocial stress with adverse childhood respiratory outcomes. The influence of exposure timing has not been completely elucidated. OBJECTIVE To examine the association between prenatal and postnatal maternal stress and wheeze in 417 children enrolled in a prospective birth cohort in Mexico City. METHODS Maternal negative life event (NLE) scores were ascertained in the second or third trimester of pregnancy and at the 48-month postnatal visit. Children's respiratory outcomes, caregiver report of ever wheeze, and wheeze in the past 12 months were obtained from the International Study of Asthma and Allergies in Childhood survey administered at 48 months. Associations between prenatal and postnatal NLE scores and wheeze were analyzed using a modified Poisson regression approach adjusting for covariates. RESULTS In separate models, higher maternal psychosocial stress during pregnancy (relative risk [RR], 1.12; 95% CI, 1.00-1.26) and postnatally (RR, 1.21; 95% CI, 1.08-1.35) were associated with increased risk of wheeze in the past 12 months with an evident exposure-response relationship. There was a significant interaction between postnatal stress and sex in relation to current wheeze. In a sex-stratified model, the association between postnatal stress and risk of wheeze in the past 12 months was stronger in girls (RR, 1.35; 95% CI, 1.13-1.61) than in boys (RR, 1.11; 95% CI, 0.97-1.27) (P for interaction = .04). CONCLUSION Prenatal and postnatal stress in mothers was associated with wheeze in preschool-aged children, and the effect of postnatal stress was stronger in girls. Understanding the temporal- and sex-specific effects of stress may better inform prevention strategies.
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Leon Hsu HH, Mathilda Chiu YH, Coull BA, Kloog I, Schwartz J, Lee A, Wright RO, Wright RJ. Prenatal Particulate Air Pollution and Asthma Onset in Urban Children. Identifying Sensitive Windows and Sex Differences. Am J Respir Crit Care Med 2015; 192:1052-9. [PMID: 26176842 PMCID: PMC4642201 DOI: 10.1164/rccm.201504-0658oc] [Citation(s) in RCA: 218] [Impact Index Per Article: 24.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Accepted: 07/13/2015] [Indexed: 12/17/2022] Open
Abstract
RATIONALE The influence of particulate air pollution on respiratory health starts in utero. Fetal lung growth and structural development occurs in stages; thus, effects on postnatal respiratory disorders may differ based on timing of exposure. OBJECTIVES We implemented an innovative method to identify sensitive windows for effects of prenatal exposure to particulate matter with a diameter less than or equal to 2.5 μm (PM2.5) on children's asthma development in an urban pregnancy cohort. METHODS Analyses included 736 full-term (≥37 wk) children. Each mother's daily PM2.5 exposure was estimated over gestation using a validated satellite-based spatiotemporal resolved model. Using distributed lag models, we examined associations between weekly averaged PM2.5 levels over pregnancy and physician-diagnosed asthma in children by age 6 years. Effect modification by sex was also examined. MEASUREMENTS AND MAIN RESULTS Most mothers were ethnic minorities (54% Hispanic, 30% black), had 12 or fewer years of education (66%), and did not smoke in pregnancy (80%). In the sample as a whole, distributed lag models adjusting for child age, sex, and maternal factors (education, race and ethnicity, smoking, stress, atopy, prepregnancy obesity) showed that increased PM2.5 exposure levels at 16-25 weeks gestation were significantly associated with early childhood asthma development. An interaction between PM2.5 and sex was significant (P = 0.01) with sex-stratified analyses showing that the association exists only for boys. CONCLUSIONS Higher prenatal PM2.5 exposure at midgestation was associated with asthma development by age 6 years in boys. Methods to better characterize vulnerable windows may provide insight into underlying mechanisms.
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Affiliation(s)
| | | | - Brent A. Coull
- Department of Biostatistics
- Department of Environmental Health, and
| | - Itai Kloog
- Department of Environmental Health, and
- Department of Geography and Environmental Development, Ben-Gurion University of the Negev, Beersheba, Israel
| | - Joel Schwartz
- Department of Environmental Health, and
- Department of Epidemiology, Harvard School of Public Health, Boston, Massachusetts; and
| | - Alison Lee
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, and
| | - Robert O. Wright
- Department of Preventive Medicine
- The Mindich Child Health & Development Institute, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Rosalind J. Wright
- Kravis Children’s Hospital, Department of Pediatrics
- The Mindich Child Health & Development Institute, Icahn School of Medicine at Mount Sinai, New York, New York
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Bertin M, Chevrier C, Serrano T, Monfort C, Cordier S, Viel JF. Sex-specific differences in fetal growth in newborns exposed prenatally to traffic-related air pollution in the PELAGIE mother-child cohort (Brittany, France). ENVIRONMENTAL RESEARCH 2015; 142:680-687. [PMID: 26378737 DOI: 10.1016/j.envres.2015.09.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2015] [Revised: 09/04/2015] [Accepted: 09/05/2015] [Indexed: 06/05/2023]
Abstract
BACKGROUND Numerous studies have linked prenatal traffic-related air pollution exposure to fetal growth. Recently, several studies have suggested exploring this association independently among boys and girls because of potential sex-specific biological vulnerability to air pollution. Residence-based factors can also influence fetal growth by enhancing susceptibility to the toxic effects of air pollution and must also be considered in these relations. OBJECTIVE We examined sex-specific associations between prenatal air pollution exposure and fetal growth and explored whether they differed by the urban-rural status of maternal residence. METHODS This study relied on the PELAGIE mother-child cohort (2521 women, Brittany, France, 2002-2006). Fetal growth was assessed through birth weight, head circumference and small weight (SGA) and small head circumference (SHC) for gestational age. Nitrogen dioxide (NO2) concentrations at mothers' homes were estimated by using a land use regression model taking into account temporal variation during pregnancy. Associations between estimated NO2 concentrations and fetal growth were assessed with linear regression or logistic regression models, depending on the outcome investigated. RESULTS An interquartile range (8.8 µg m(-3)) increase in NO2 exposure estimates was associated with a 27.4 g (95% CI 0.8 to 55.6) increase in birth weight and a 0.09 cm (95% CI 0.00-0.17) significant increase in head circumference, among newborn boys only. Their risks of SGA and SHC were reduced (OR 0.70, 95% CI 0.53-0.92, OR 0.76, 95% CI 0.56-1.03, respectively, for an increase of 8.8 µg m(-3)). No statistically significant trends were observed among girls. Urban-rural status modified the effect of air pollution only for SHC and again only for newborn boys. CONCLUSION Findings from this study confirm the need to consider sex-specific associations between air pollution and fetal growth and to investigate possible mechanisms by which traffic-related air pollution may increase anthropometric parameters at birth.
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Affiliation(s)
- Mélanie Bertin
- INSERM U1085-IRSET, France; University of Rennes 1, Rennes, France; EHESP School of Public Health, Sorbone Paris Cité, Rennes, France
| | - Cécile Chevrier
- INSERM U1085-IRSET, France; University of Rennes 1, Rennes, France
| | - Tania Serrano
- INSERM U1085-IRSET, France; University of Rennes 1, Rennes, France; EHESP School of Public Health, Sorbone Paris Cité, Rennes, France
| | | | - Sylvaine Cordier
- INSERM U1085-IRSET, France; University of Rennes 1, Rennes, France
| | - Jean-François Viel
- INSERM U1085-IRSET, France; University of Rennes 1, Rennes, France; Department of Epidemiology and Public Health, University Hospital, 2 rue Henri Le Guilloux, 35033 Rennes, France.
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61
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Pedersen M, Mendez MA, Schoket B, Godschalk RW, Espinosa A, Landström A, Villanueva CM, Merlo DF, Fthenou E, Gracia-Lavedan E, van Schooten FJ, Hoek G, Brunborg G, Meltzer HM, Alexander J, Nielsen JK, Sunyer J, Wright J, Kovács K, de Hoogh K, Gutzkow KB, Hardie LJ, Chatzi L, Knudsen LE, Anna L, Ketzel M, Haugen M, Botsivali M, Nieuwenhuijsen MJ, Cirach M, Toledano MB, Smith RB, Fleming S, Agramunt S, Kyrtopoulos SA, Lukács V, Kleinjans JC, Segerbäck D, Kogevinas M. Environmental, dietary, maternal, and fetal predictors of bulky DNA adducts in cord blood: a European mother-child study (NewGeneris). ENVIRONMENTAL HEALTH PERSPECTIVES 2015; 123:374-80. [PMID: 25626179 PMCID: PMC4383575 DOI: 10.1289/ehp.1408613] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2014] [Accepted: 01/23/2015] [Indexed: 05/02/2023]
Abstract
BACKGROUND Bulky DNA adducts reflect genotoxic exposures, have been associated with lower birth weight, and may predict cancer risk. OBJECTIVE We selected factors known or hypothesized to affect in utero adduct formation and repair and examined their associations with adduct levels in neonates. METHODS Pregnant women from Greece, Spain, England, Denmark, and Norway were recruited in 2006-2010. Cord blood bulky DNA adduct levels were measured by the 32P-postlabeling technique (n = 511). Diet and maternal characteristics were assessed via questionnaires. Modeled exposures to air pollutants and drinking-water disinfection by-products, mainly trihalomethanes (THMs), were available for a large proportion of the study population. RESULTS Greek and Spanish neonates had higher adduct levels than the northern European neonates [median, 12.1 (n = 179) vs. 6.8 (n = 332) adducts per 108 nucleotides, p < 0.001]. Residence in southern European countries, higher maternal body mass index, delivery by cesarean section, male infant sex, low maternal intake of fruits rich in vitamin C, high intake of dairy products, and low adherence to healthy diet score were statistically significantly associated with higher adduct levels in adjusted models. Exposure to fine particulate matter and nitrogen dioxide was associated with significantly higher adducts in the Danish subsample only. Overall, the pooled results for THMs in water show no evidence of association with adduct levels; however, there are country-specific differences in results with a suggestion of an association in England. CONCLUSION These findings suggest that a combination of factors, including unknown country-specific factors, influence the bulky DNA adduct levels in neonates.
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Affiliation(s)
- Marie Pedersen
- Centre for Research in Environmental Epidemiology (CREAL), Barcelona, Spain
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62
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Multifactorial Origin of Neurodevelopmental Disorders: Approaches to Understanding Complex Etiologies. TOXICS 2015; 3:89-129. [PMID: 29056653 PMCID: PMC5634696 DOI: 10.3390/toxics3010089] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2014] [Revised: 03/06/2015] [Accepted: 03/18/2015] [Indexed: 12/12/2022]
Abstract
A significant body of evidence supports the multifactorial etiology of neurodevelopmental disorders (NDDs) affecting children. The present review focuses on early exposure to environmental chemicals as a risk factor for neurodevelopment, and presents the major lines of evidence derived from epidemiological studies, underlying key uncertainties and research needs in this field. We introduce the exposome concept that, encompassing the totality of human environmental exposures to multiple risk factors, aims at explaining individual vulnerability and resilience to early chemical exposure. In this framework, we synthetically review the role of variable gene backgrounds, the involvement of epigenetic mechanisms as well as the function played by potential effect modifiers such as socioeconomic status. We describe laboratory rodent studies where the neurodevelopmental effects of environmental chemicals are assessed in the presence of either a “vulnerable” gene background or adverse pregnancy conditions (i.e., maternal stress). Finally, we discuss the need for more descriptive and “lifelike” experimental models of NDDs, to identify candidate biomarkers and pinpoint susceptible groups or life stages to be translated to large prospective studies within the exposome framework.
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63
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Lakshmanan A, Chiu YHM, Coull BA, Just AC, Maxwell SL, Schwartz J, Gryparis A, Kloog I, Wright RJ, Wright RO. Associations between prenatal traffic-related air pollution exposure and birth weight: Modification by sex and maternal pre-pregnancy body mass index. ENVIRONMENTAL RESEARCH 2015; 137:268-277. [PMID: 25601728 PMCID: PMC4354711 DOI: 10.1016/j.envres.2014.10.035] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2014] [Revised: 10/29/2014] [Accepted: 10/31/2014] [Indexed: 05/15/2023]
Abstract
BACKGROUND Prenatal traffic-related air pollution exposure is linked to adverse birth outcomes. However, modifying effects of maternal body mass index (BMI) and infant sex remain virtually unexplored. OBJECTIVES We examined whether associations between prenatal air pollution and birth weight differed by sex and maternal BMI in 670 urban ethnically mixed mother-child pairs. METHODS Black carbon (BC) levels were estimated using a validated spatio-temporal land-use regression (LUR) model; fine particulate matter (PM2.5) was estimated using a hybrid LUR model incorporating satellite-derived Aerosol Optical Depth measures. Using stratified multivariable-adjusted regression analyses, we examined whether associations between prenatal air pollution and calculated birth weight for gestational age (BWGA) z-scores varied by sex and maternal pre-pregnancy BMI. RESULTS Median birth weight was 3.3±0.6kg; 33% of mothers were obese (BMI ≥30kg/m(3)). In stratified analyses, the association between higher PM2.5 and lower birth weight was significant in males of obese mothers (-0.42 unit of BWGA z-score change per IQR increase in PM2.5, 95%CI: -0.79 to -0.06) ( PM2.5×sex×obesity Pinteraction=0.02). Results were similar for BC models (Pinteraction=0.002). CONCLUSIONS Associations of prenatal exposure to traffic-related air pollution and reduced birth weight were most evident in males born to obese mothers.
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Affiliation(s)
- Ashwini Lakshmanan
- Division of Neonatal Medicine, Children’s Hospital Los Angeles, Los Angeles, CA, USA
| | | | - Brent A. Coull
- Department of Biostatistics, Harvard School of Public Health, Boston, MA, USA
- Department of Environmental Health, Harvard School of Public Health, Boston, MA, USA
| | - Allan C. Just
- Department of Environmental Health, Harvard School of Public Health, Boston, MA, USA
| | - Sarah L. Maxwell
- Channing Laboratory, Department of Medicine, Brigham and Women’s Hospital & Harvard Medical School, Boston, MA
| | - Joel Schwartz
- Department of Environmental Health, Harvard School of Public Health, Boston, MA, USA
| | - Alexandros Gryparis
- Department of Hygiene, Epidemiology and Medical Statistics, Medical School of Athens, Athens, Greece
| | - Itai Kloog
- Department of Geography and Environmental Development, Ben-Gurion University of the Negev, Beersheba, Israel
| | - Rosalind J. Wright
- Department of Pediatrics, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- The Mindich Child Health and Development Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Robert O. Wright
- Department of Preventive Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- The Mindich Child Health and Development Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
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Demarest TG, McCarthy MM. Sex differences in mitochondrial (dys)function: Implications for neuroprotection. J Bioenerg Biomembr 2014; 47:173-88. [PMID: 25293493 DOI: 10.1007/s10863-014-9583-7] [Citation(s) in RCA: 122] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Accepted: 09/14/2014] [Indexed: 12/12/2022]
Abstract
Decades of research have revealed numerous differences in brain structure size, connectivity and metabolism between males and females. Sex differences in neurobehavioral and cognitive function after various forms of central nervous system (CNS) injury are observed in clinical practice and animal research studies. Sources of sex differences include early life exposure to gonadal hormones, chromosome compliment and adult hormonal modulation. It is becoming increasingly apparent that mitochondrial metabolism and cell death signaling are also sexually dimorphic. Mitochondrial metabolic dysfunction is a common feature of CNS injury. Evidence suggests males predominantly utilize proteins while females predominantly use lipids as a fuel source within mitochondria and that these differences may significantly affect cellular survival following injury. These fundamental biochemical differences have a profound impact on energy production and many cellular processes in health and disease. This review will focus on the accumulated evidence revealing sex differences in mitochondrial function and cellular signaling pathways in the context of CNS injury mechanisms and the potential implications for neuroprotective therapy development.
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Affiliation(s)
- Tyler G Demarest
- Program in Neuroscience, University of Maryland School of Medicine, Baltimore, MD, USA,
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Ojeda NB, Intapad S, Alexander BT. Sex differences in the developmental programming of hypertension. Acta Physiol (Oxf) 2014; 210:307-16. [PMID: 24268043 DOI: 10.1111/apha.12206] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2013] [Revised: 07/29/2013] [Accepted: 11/19/2013] [Indexed: 02/06/2023]
Abstract
Experimental models of developmental programming provide proof of concept and support Barker's original findings that link birthweight and blood pressure. Many experimental models of developmental insult demonstrate a sex difference with male offspring exhibiting a higher blood pressure in young adulthood relative to their age-matched female counterparts. It is well recognized that men exhibit a higher blood pressure relative to age-matched women prior to menopause. Yet, whether this sex difference is noted in individuals born with low birthweight is not clear. Sex differences in the developmental programming of blood pressure may originate from innate sex-specific differences in expression of the renin angiotensin system that occur in response to adverse influences during early life. Sex differences in the developmental programming of blood pressure may also involve the influence of the hormonal milieu on regulatory systems key to the long-term control of blood pressure such as the renin angiotensin system in adulthood. In addition, the sex difference in blood pressure in offspring exposed to a developmental insult may involve innate sex differences in oxidative status or the endothelin system or may be influenced by age-dependent changes in the developmental programming of cardiovascular risk factors such as adiposity. Therefore, this review will highlight findings from different experimental models to provide the current state of knowledge related to the mechanisms that contribute to the aetiology of sex differences in the developmental programming of blood pressure and hypertension.
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Affiliation(s)
- N. B. Ojeda
- Department of Pediatrics; University of Mississippi Medical Center; Jackson MS USA
- Women's Health Research Center; University of Mississippi Medical Center; Jackson MS USA
| | - S. Intapad
- Department of Physiology and Biophysics; University of Mississippi Medical Center; Jackson MS USA
| | - B. T. Alexander
- Women's Health Research Center; University of Mississippi Medical Center; Jackson MS USA
- Department of Physiology and Biophysics; University of Mississippi Medical Center; Jackson MS USA
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Genome-wide gene expression profiles in antioxidant pathways and their potential sex differences and connections to vitamin C in mice. Int J Mol Sci 2013; 14:10042-62. [PMID: 23665904 PMCID: PMC3676827 DOI: 10.3390/ijms140510042] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2013] [Revised: 04/07/2013] [Accepted: 04/28/2013] [Indexed: 12/13/2022] Open
Abstract
Vitamin C (VC) is well known as an antioxidant in humans, primates and guinea pigs. Studies have suggested gender differences in VC requirements in humans, and gender differences in oxidant injury vulnerability in early life may represent a biological mechanism contributing to gender disparity in later life. Using spontaneous bone fracture (sfx) mice, which lack the gene for L-Gulonolactone oxidase (Gulo), we studied the potential sex difference in expression profiles of oxidative genes at the whole-genome level. Then, we analyzed data of gene expressions in a mouse population of recombinant inbred (RI) strains originally derived by crossing C57BL/6J (B6) and DBA/2J (D2) mice. Our data indicated that there were sex differences in the regulation of pre- and pro-oxidative genes in sfx mice. The associations of expression levels among Gulo, its partner genes and oxidative genes in the BXD (B6 × D2) RI strains showed a sex difference. Transcriptome mapping suggests that Gulo was regulated differently between female and male mice in BXD RI strains. Our study indicates the importance of investigating sex differences in Gulo and its oxidative function by using available mouse models.
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