Mother-child Pairs Research Articles

Organic food consumption during pregnancy and symptoms of neurodevelopmental disorders at 8 years of age in the offspring: the Norwegian Mother, Father and Child Cohort Study (MoBa)

BackgroundPartially driven by public concerns about modern food production practices, organic food has gained popularity among consumers. However, the impact of organic food consumption during pregnancy on offspring health is scarcely studied. We aimed to investigate the association between maternal intake of organic food during pregnancy and symptoms of attention deficit/hyperactivity disorder (ADHD) and autism spectrum disorder (ASD) in offspring at 8 years of age.MethodsThis study was based on the Norwegian Mother, Father and Child Cohort Study (MoBa) and the Medical Birth Registry of Norway (MBRN). The total study sample included 40,707 mother–child pairs (children born 2002–2009). Organic food consumption during pregnancy was assessed by six questions from a food frequency questionnaire in mid-pregnancy (sum score 0–18). Symptoms of ADHD and ASD in the offspring aged 8 years were measured by ADHD (0–54) and ASD (0–39) symptom scores based on the Parent/Teacher Rating Scale for Disruptive Behaviour disorders and the Social Communication Questionnaire. Associations between maternal intake of organic food during pregnancy and symptoms of ADHD and ASD in the offspring were analyzed using regression models with adjustment for covariates such as maternal anxiety and depression, including sibling analysis.ResultsMean ADHD and ASD symptom scores in the offspring differed only slightly by maternal intake of organic food. The covariate-adjusted unstandardized regression coefficient (adjusted(Adj)beta) with 95% confidence interval for the ADHD symptom score with one unit increase in organic food sum score was 0.03 (0.01, 0.05). Similarly, Adjbeta for autism symptom score was 0.07 (0.04, 0.10). For ADHD, the adjusted estimates weakened when adjusting for maternal symptoms of ADHD. The sibling analyses showed no significant results with Adjbeta − 0.07 (− 0.15, 0.01) and − 0.001 (− 0.12, 0.12) for ADHD and ASD outcomes, respectively.ConclusionsWe observed weak positive associations between frequent maternal organic food consumption during pregnancy and offspring ADHD and ASD symptom levels at 8 years of age. This trend weakened or disappeared after adjusting for maternal symptoms of ADHD, and in sibling analyses, suggesting that the associations mainly reflect genetic confounding. Our study indicates that consumption of organic food during pregnancy should neither be considered a risk factor nor protective against symptoms of ADHD and ASD in offspring.

Evolutionary development of mother-child scaffolding for moral comprehension.

This evolutionary developmental study employed an experimental recursive narrative ecological niche, comparing scaffolded mother-child (5-year-old) pairs to unassisted controls as they independently viewed and discussed a realistic fictional family video depicting a father-daughter emotional conflict over the girl's risky behavior, which violated harm/care and fairness/justice moral foundation norms. A microgenetic analysis was conducted on a selected variant pair that demonstrated high adaptive fitness in the niche by employing developmentally advanced cooperative scaffolding tools. The conversational ecosystem phase was characterized by repeated maternal theory-oriented "why" questions and coordinated child causal responses, forming a joint epistemic investigation that facilitated the child's moral understanding of the characters' responsibilities and motives. The pair used quasi-justice procedures to gather evidence, judge, and construct moral attributes for the characters. Their conversational mechanism was supported by mutual mindreading, mental time travel, and empathic communications, as they interacted simultaneously with each other and the story characters. A narrative ecological scaffolding theory emerged, establishing a standard for cooperative epistemic scaffolding between the mother and the child. Future training programs should utilize the Zone of Proximal Development method to instruct similar parent-child pairs.

Associations of 1.5- and 3-year phthalate exposure levels with early adiposity rebound and overweight/obesity in Japanese children: An adjunct study of the Japan Environment and Children's Study

The relationship between early childhood phthalate exposure and early adiposity rebound (EAR) is unclear. This study aimed to investigate the association between 1.5- and 3-year phthalate exposure and EAR and overweight/obesity in 7.5-year-old Japanese children. A total of 452 mother–child pairs were enrolled from the Aichi Regional Cohort of the Japan Environment and Children's Study. The children were followed up at birth and at 1.5, 2, 3, 4, 5, 6, and 7.5 years of age for physical examination. Human biomonitoring of 16 urinary metabolites of eight phthalates was performed at 1.5 and 3 years of age. Latent class mixed models, binary logistic regression, and quantile g-computation were performed to identify body mass index (BMI) trajectories and investigate the relationships of single or mixed phthalate exposure with EAR and overweight/obesity. A one-unit increase in log10-transformed 3-year-old Σdi(2-ethylhexyl) phthalate (ΣDEHP) exposure levels was significantly associated with 6-year-old BMI in girls. The 1.5-year mono-iso-butyl phthalate and 3-year Σdi-isodecyl phthalate exposure levels were significantly associated with the repeated measures of longitudinal BMIs in girls. Single phthalate exposure showed null associations with EAR or overweight/obesity in the 7.5-year-old children. Σdi-isononyl phthalate, ΣDEHP, and mono-n-butyl phthalate exhibited the highest proportion of partial positive weights of being in the EAR trajectory after confounder adjustment. Phthalate mixture exposure in 1.5- and 3-year-old children was not significantly associated with EAR. Early childhood phthalate exposure was not related to EAR or overweight/obesity in 7.5-year-old Japanese children. However, few phthalates were positively associated with longitudinal BMIs in girls.

Effects of Mozart–Orff parent–child music therapy among mothers and their preschool children with autism spectrum disorder: A mixed-methods randomised controlled trial

BackgroundAutism spectrum disorder (ASD) negatively impacts mental health, particularly in mothers of autistic children who experience heightened stress. Applied behaviour analysis (ABA) and music therapy are recognised interventions for improving ASD symptoms. However, the specific benefits of parent–child music therapy and ABA for autistic children and their mothers remain uncertain. This study evaluated the effects of parent–child music therapy on preschool autistic children and their mothers.MethodA randomised controlled trial was conducted with 100 mother–child pairs assigned to either the control group receiving ABA or the intervention group receiving both music therapy and ABA. Qualitative interviews were conducted post-intervention for 12 mothers.ResultsChildren in the intervention group exhibited lower scores for ASD symptoms than those in the control group. Moreover, mothers in the intervention group demonstrated reduced dysfunctional parent–child interaction, lower overall parental stress, significantly improved family functioning, and increased levels of hope compared with those in the control group. Mothers held positive views regarding music therapy.ConclusionsCombining ABA with parent–child music therapy can alleviate ASD symptoms in children and reduce stress in mothers. Improved parent–child interaction and enhanced family functioning further support the benefits of this combined approach. Parent–child music therapy, combined with ABA demonstrated positive outcomes for autistic children, including reduced ASD symptoms, improved parent–child interaction, decreased parental stress, enhanced family functioning, and increased hope. These findings highlight the potential of incorporating music therapy as a valuable component in the comprehensive treatment of ASD.Trial registrationThis study was registered in the Chinese Clinical Trial registry (05/07/2021, ChiCTR2100048261, https://www.chictr.org.cn/showproj.html?proj=128957). Ethical approval was obtained from the Research Ethics Committee of Fujian Medical University and the study hospital (Fujian Provincial Maternity and Child Health Hospital; 2017 − 105), and informed consent was obtained from all subjects and/or their legal guardian(s).

Prenatal Exposure to Source-Specific Fine Particulate Matter and Autism Spectrum Disorder.

In this study, associations between prenatal exposure to fine particulate matter (PM2.5) from 9 sources and development of autism spectrum disorder (ASD) were assessed in a population-based retrospective pregnancy cohort in southern California. The cohort included 318,750 mother-child singleton pairs. ASD cases (N = 4559) were identified by ICD codes. Source-specific PM2.5 concentrations were estimated from a chemical transport model with a 4 × 4 km2 resolution and assigned to maternal pregnancy residential addresses. Cox proportional hazard models were used to estimate the hazard ratios (HR) of ASD development for each individual source. We also adjusted for total PM2.5 mass and in a separate model for all other sources simultaneously. Increased ASD risk was observed with on-road gasoline (HR [CI]: 1.18 [1.13, 1.24]), off-road gasoline (1.15 [1.12, 1.19]), off-road diesel (1.08 [1.05, 1.10]), food cooking (1.05 [1.02, 1.08]), aircraft (1.04 [1.01, 1.06]), and natural gas combustion (1.09 [1.06, 1.11]), each scaled to standard deviation increases in concentration. On-road gasoline and off-road gasoline were robust for other pollutant groups. PM2.5 emitted from different sources may have different impacts on ASD. The results also identify PM source mixtures for toxicological investigations that may provide evidence for future public health policies.

Gestational exposure to organophosphate esters and autism spectrum disorder and other non-typical development in a cohort with elevated familial likelihood

BackgroundGestational exposure to organophosphate esters (OPEs) is known to affect offspring neurodevelopment in animal studies. However, epidemiological evidence is inconsistent. MethodsParticipants were 277 mother-child pairs from MARBLES (Markers of Autism Risk in Babies – Learning Early Signs), a cohort with elevated familial likelihood of autism spectrum disorder (ASD). Nine OPE biomarker concentrations were quantified in maternal urine collected during the 2nd or 3rd trimesters of pregnancy. At age 3 years, children underwent clinical assessment for ASD and were classified into ASD, other non-typical development (non-TD), or typical development (TD). Multinomial logistic regression was used to estimate associations between each OPE biomarker and relative risk ratios for ASD and non-TD compared to TD. We examined effect modification by child sex and socioeconomic status. We also conducted a secondary analysis by using a continuous measure of ASD symptom severity as an outcome. Quantile-based g-computation was performed to examine the associations for an OPE mixture. ResultsOverall, no significant association was observed between the concentrations of each OPE biomarker or their mixture and relative risk for either ASD or non-TD. Effect modifications by child sex and maternal education were not observed. When the analysis was stratified by homeownership, among non-homeowners, ASD likelihood was increased with increased levels of bis(1-chloro-2-propyl) phosphate, bis(butoxyethyl) phosphate, and sum of di-n-butyl phosphate and di-iso-butyl phosphate (DBUP/DIBP) (pint < 0.10). Higher DBUP/DIBP were associated with increased ASD symptom severity scores. ConclusionThere was no clear evidence of gestational OPE exposure in association with relative risk for ASD; however, potential effect modification by homeownership was observed. Although our cohort includes children with elevated familial likelihood of ASD, this is the first study investigating the association between gestational OPE exposure and clinically-diagnosed ASD. Further research is needed to confirm our findings in the general population.

Association of maternal pre-pregnancy BMI, gestational weight gain, and gestational diabetes mellitus with BMI trajectory in early childhood: a prospective cohort study

Objective: To examine the associations of pre-pregnancy body mass index (BMI), gestational weight gain, and gestational diabetes mellitus (GDM) with early childhood BMI trajectories. Methods: A total of 1 227 mother-child pairs from the Peking University Birth Cohort in Tongzhou were included in this study. In the cohort, maternal pre-pregnancy weight, height, gestational weight gain, and GDM diagnosis were collected. The children were followed up at birth and at 1, 3, 6, 9, 12, 18, 24, 30, and 36 months of age to obtain height/length and weight data. The longitudinal data-based k-means clustering algorithm was used to identify early childhood BMI trajectory groups. The associations of maternal pre-pregnancy BMI, gestational weight gain, and GDM with early childhood BMI trajectories were analyzed using the logistic regression model. We further explored whether there is an interaction effect between pre-pregnancy overweight/obesity and excessive gestational weight gain on the risk of the high BMI trajectory in early childhood through multiplicative and additive interaction analyses. Results: The prevalence rates of overweight and obesity before pregnancy were 21.2% (260 cases) and 6.6% (81 cases) respectively. The prevalence of excessive gestational weight gain and GDM was 57.7% (708 cases) and 30.9% (379 cases). The early childhood BMI trajectories were named low, medium, and high trajectories, accounting for 30.5%, 45.4% and 24.1%, respectively. After controlling potential confounding factors, it was found that pre-pregnancy overweight (OR=1.54, 95%CI: 1.12-2.12), obesity (OR=2.33, 95%CI: 1.41-3.85), and excessive gestational weight gain (OR=1.47, 95%CI: 1.10-1.97) were risk factors for being in the high BMI trajectory in early childhood. GDM was not significantly associated with early childhood BMI trajectories (P>0.05). Compared with the independent effects of pre-pregnancy overweight/obesity (OR=1.90, 95%CI: 1.17-3.09) and excessive gestational weight gain (OR=1.45, 95%CI: 1.03-2.04), the risk of being in the high BMI trajectory in early childhood was greater when the two factors coexisted (OR=2.38, 95%CI: 1.60-3.54). However, both the multiplicative and additive models showed no interaction effect between pre-pregnancy overweight/obesity and excessive gestational weight gain. Conclusions: Maternal pre-pregnancy overweight/obesity and excessive gestational weight gain are independent risk factors for children being in the high BMI trajectory in early childhood, providing scientific evidence for obesity prevention.

Problematic screen exposure and oral health in preschool children: a comparison study

ObjectivesRecent studies have highlighted the association between problematic screen exposure (PSE) in preschool children and various health issues. This study aims to determine the relationship between PSE and oral/dental health as well as parafunctional oral habits in this population.MethodsHealthy children aged 3 to 6 years who visited the pediatric dentistry outpatient clinic were included in the study. PSE was evaluated using the parent-reported ‘Seven-in-Seven-Screen-Exposure Questionnaire’. An intraoral examination was conducted to record the number of decated, missing, and filled teeth, along with scores from the International Caries Detection and Assessment System II (ICDAS II), as well as dental plaque and gingival indices.ResultsA total of 210 mother–child pairs were included in the study, comprising 70 pairs with PSE and 140 pairs without PSE. The sociodemographic characteristics, frequency of daily tooth brushing behaviors, use of children's toothpaste, and regular dental examinations were statistically evaluated between the PSE and non-PSE group (p > 0.05). Additionally, there was no statistically significant difference between the groups in terms of having abnormal oral habits (p > 0.05). In the PSE group, the median scores for gingival and plaque index were significantly higher (p = 0.011 and p = 0.006, respectively). The median number of decayed teeth was significantly higher in the PSE group (p = 0.039).ConclusionsTurkish preschool children with PSE were found to have a significantly higher likelihood of experiencing poor oral health. Consequently, it is essential to conduct oral health examinations for Turkish preschool children exhibiting PSE. The study may have clinical implications for the evaluation of preschool children with problematic media use within dental practice.

The fetal origins of metabolic health: exploring the association between newborn biological age and metabolism hormones in childhood

BackgroundTelomere length (TL), mitochondrial DNA copy number (mtDNAcn), and DNA methylation age (DNAmAge) are common aging biomarkers. However, research on the associations between these three markers at birth and subsequent metabolic status was limited. This study aimed to evaluate the association between TL, mtDNAcn, and DNAmAge in newborns and the variation in metabolic hormones of children at 3 years old.MethodsThis research involved 895 mother–child pairs from a birth cohort in China, with TL and mtDNAcn measured using quantitative real-time PCR, DNA methylation (DNAm) assessed using Infinium MethylationEPIC Beadchip, and DNAm age (DNAmAge) determined using Horvath’s epigenetic clock. Insulin and leptin levels were measured via electrochemiluminescence assay. Multivariable adjusted linear regression and restricted cubic spline (RCS) analysis were utilized to examine the association between aging markers and metabolic hormones.ResultsThe linear regression analysis indicated the percentage change of metabolism hormones for per doubling of aging biomarkers alterations and found significant associations between DNAmAge and insulin levels (adjusted percent change (95% CI), − 13.22 (− 23.21 to − 1.94)), TL and leptin levels (adjusted percent change (95% CI), 15.32 (1.32 to 31.24)), and mtDNAcn and leptin levels (adjusted percent change (95% CI), − 14.13 (− 21.59 to − 5.95)). The RCS analysis revealed significant non-linear associations between TL (Ln transformed) and insulin (Ln transformed) (P = 0.024 for nonlinearity), as well as DNAmAge (Ln transformed) and leptin (Ln transformed) (P = 0.043 for nonlinearity). Specifically, for TL and insulin, a positive association was observed when TL (Ln transformed) was less than − 0.05, which transitioned to an inverse association when TL (Ln transformed) was greater than − 0.05. Regarding DNAmAge and leptin, there was a sharp decline when DNAmAge (Ln transformed) was less than − 1.35, followed by a plateau between − 1.35 and − 0.67 and then a further decline when DNAmAge (Ln transformed) was greater than − 0.67.ConclusionsIn this prospective birth cohort study, variation in metabolic hormones of children at 3 years old was associated with TL, mtDNAcn, and DNAmAge at birth. These findings suggested that TL, mtDNAcn, and DNAmAge might play a role in the biological programming of metabolic health from birth.

Pre-pregnancy BMI, gestational weight gain, and telomere length in amniotic fluid: a causal graph analysis.

Previous investigations have suggested a potential association between pre-pregnancy body mass index (BMI) and gestational weight gain (GWG) with telomere length (TL) in various tissues of pregnant women and newborns. Nonetheless, as association does not imply causation, our objective was to investigate the causal connections among pre-pregnancy BMI, GWG, and TL in amniotic fluid. The analysis included 136 mother-child pairs from the Mamma & Bambino cohort, and three causal graph models were developed to depict the interconnections between pre-pregnancy BMI, GWG, and TL. Causal graph analysis was conducted utilizing the do-operator to estimate the causal effect of GWG and the controlled direct effect of pregestational BMI. We revealed that transitioning from non-adequate to adequate GWG had a positive impact on the probability of having "long" TL (i.e., a value greater than the population median) in all three models. When considering the effect of pre-pregnancy BMI, the highest probability of "long" TL was observed in normal weight women with adequate GWG. In contrast, the effect of adequate GWG became minimal among overweight women. These results shed light on the potential causality between pre-pregnancy BMI, GWG, and TL in amniotic fluid, emphasizing the importance of appropriate weight management before and during pregnancy for optimal TL outcomes.

Association Between a Mother's Cervical Cancer Screening and Child's Human Papillomavirus (HPV) Vaccination Status.

To investigate the association between maternal cervical cancer (CC) screening status and child human papillomavirus (HPV) vaccination uptake. To understand if child sex or social deprivation index (SDI) modify this association. We used a national cohort of children linked to at least one parent using electronic health record (EHR) data from a network of community health centers across the United States. We used SDI scores and child sex as moderating variables. We performed the analysis (1) for the whole sample (with SDI and child sex added as covariates), (2) stratified by SDI quartile (with child sex added as a covariate), and (3) stratified by SDI quartile and child sex, to examine whether associations vary by SDI quartile and by child sex. N = 52,919 linked mother-child pairs. Mother's receipt of CC screening was positively associated with the linked child's odds of receiving HPV vaccination [adjusted odds ratio (AOR) 1.39, 95% confidence interval (CI) 1.32, 1.47]. Neither sex or SDI modified this association. There were no significant differences in odds of HPV vaccination in children between SDI quartiles or between male and female children. An effective way to improve rates of HPV vaccination among children and adolescents may be to target attention towards increasing CC screening rates among mothers. Further, focusing resources and efforts on CC screenings and care of both mothers and their children may be more worthwhile than isolated efforts targeting HPV vaccination for children and adolescents.

Investigating Exposure and Hazards of Micro- and Nanoplastics During Pregnancy and Early Life (AURORA Project): Protocol for an Interdisciplinary Study.

Micro- and nanoplastics (MNPs) are emerging pollutants of concern with ubiquitous presence in global ecosystems. MNPs pose potential implications for human health; however, the health impacts of MNP exposures are not yet understood. Recent evidence suggests that MNPs can cross the placental barrier, underlying the urgent need to understand their impact on reproductive health and development. The Actionable eUropean ROadmap for early-life health Risk Assessment of micro- and nanoplastics (AURORA) project will investigate MNP exposures and their biological and health effects during pregnancy and early life, which are critical periods due to heightened vulnerability to environmental stressors. The AURORA project will enhance exposure assessment capabilities for measuring MNPs, MNP-associated chemicals, and plastic additives in human tissues, including placenta and blood. In this interdisciplinary project, we will advance methods for in-depth characterization and scalable chemical analytical strategies, enabling high-resolution and large-scale toxicological, exposure assessment, and epidemiological studies. The AURORA project performs observational studies to investigate determinants and health impacts of MNPs by including 800 mother-child pairs from 2 existing birth cohorts and 110 women of reproductive age from a newly established cohort. This will be complemented by toxicological studies using a tiered-testing approach and epidemiological investigations to evaluate associations between maternal and prenatal MNP exposures and health perturbations, such as placental function, immune-inflammatory responses, oxidative stress, accelerated aging, endocrine disruption, and child growth and development. The ultimate goal of the AURORA project is to create an MNP risk assessment framework and identify the remaining knowledge gaps and priorities needed to comprehensively assess the impact of MNPs on early-life health. In the first 3 years of this 5-year project (2021-2026), progress was made toward all objectives. This includes completion of recruitment and data collection for new and existing cohorts, development of analytical methodological protocols, and initiation of the toxicological tiered assessments. As of September 2024, data analysis is ongoing and results are expected to be published starting in 2025. As plastic pollution increases globally, it is imperative to understand the impact of MNPs on human health, particularly during vulnerable developmental stages such as early life. The contributions of the AURORA project will inform future risk assessment. DERR1-10.2196/63176.

Prevalence of early initiation of breastfeeding and its associated factors among women in Mauritania: evidence from a national survey

BackgroundTimely initiation of breastfeeding is crucial for positive health outcomes for babies and mothers. Understanding the factors influencing timely initiation of breastfeeding is vital for reducing child morbidities and mortalities in Mauritania. This study, therefore, assessed the prevalence of early initiation of breastfeeding and its associated factors among women in Mauritania, providing significant insights for improving maternal and child health in the country.MethodsWe performed a secondary analysis of the 2019–2021 Mauritania Demographic and Health Survey data. A weighted sample of 4,114 mother-child pairs was included in the study. We used percentage to present the prevalence of early initiation of breastfeeding. A four-modelled multilevel binary logistic regression was used to examine the factors associated with early initiation of breastfeeding. The regression results were presented using adjusted odds ratio (aOR) with their respective 95% confidence interval (CI). Stata software version 17.0 was used to perform all the analyses.ResultsThe prevalence of early initiation of breastfeeding was 57.3% (95% CI 54.5, 60.00). Birth order was associated with early initiation of breastfeeding with the highest odds among those in the fourth birth order (aOR 1.61; 95% CI 1.08, 2.39). Mothers who practiced skin-to-skin contact were more likely to initiate breastfeeding early than those who did not (aOR 1.46; 95% CI 1.14, 1.87). There were regional disparities in the early initiation of breastfeeding. The odds of timely initiation of breastfeeding was lower among women who were delivered by caesarean section (aOR 0.22; 95%CI 0.14, 0.36), those who were working (aOR 0.57; 95% CI 0.45, 0.73), those who had four or more antenatal care visits (aOR 0.67; 95%CI 0.47, 0.94)], and those in the richest wealth quintile (aOR 0.61; 95% CI 0.38, 0.98) compared to those who had normal delivery, those who were not working, those who had zero antenatal care visits, and those in the poorest wealth quintile households, respectively.ConclusionOur study found a relatively low prevalence of early initiation of breastfeeding among women in Mauritania. Factor such as birth order, region of residence, mother and newborn skin-to-skin contact after birth, antenatal care visits, caesarean delivery, employment status, and wealth index were associated with early initiation of breastfeeding. Improving optimal breastfeeding practices, such as early initiation of breastfeeding in Mauritania, should be given adequate attention. There is a need for interventions such as baby-friendly facilities, providing an enabling environment for mothers to breastfeed their newborns early. Addressing regional health access disparities is important to improve early initiation of breastfeeding and other maternal, newborn, and child health interventions.

Decomposing the variance: The unique and shared associations of fine and ultrafine particulate matter exposed during pregnancy with child autism spectrum disorder

While fine particulate matter (PM2.5) has been associated with autism spectrum disorder (ASD), few studies focused on ultrafine particles (PM0.1). Given that fine and ultrafine particles can be highly correlated due to shared emission sources, challenges remain to distinguish their health effects. In a retrospective cohort of 318,371 mother-child pairs (4549 ASD cases before age 5) in Southern California, pregnancy average PM2.5 and PM0.1 were estimated using a California-based chemical transport model and assigned to residential addresses. The correlation between PM2.5 and PM0.1 was 0.87. We applied a two-step variance decomposition approach: first, decomposing PM2.5 and PM0.1 into the shared and unique variances using ordinary least squares linear regression (OLS) and Deming regression considering errors in both exposures; then assessing associations between decomposed PM2.5 and PM0.1 and ASD using Cox proportional hazard models adjusted for covariates. Prenatal PM2.5 and PM0.1 each was associated with increased ASD risk. OLS decomposition showed that associations were driven mainly by their shared variance, not by their unique variance. Results from Deming regression considering assumptions of measurement errors were consistent with those from OLS. This decomposition approach has potential to disentangle health effects of correlated exposures, such as PM2.5 and PM0.1 from common emissions sources.

Comparative Analysis of Caries Risk Factors in Mother-Child Pairs

Comparative Analysis of Caries Risk Factors in Mother-Child Pairs

Associations of Pregnancy Dietary Quality and Diversity with Childhood Celiac Disease

BackgroundHigh gluten and low dietary fiber in pregnancy intake is associated with an increased risk of celiac disease (CeD) in the child. Early life higher dietary quality is suggested to reduce the subsequent risk of CeD. ObjectivesThe aim was to investigate associations of pregnancy dietary quality and diversity with child risk of CeD. MethodsIn The Norwegian Mother, Father and Child Cohort Study, 85,122 mother-child pairs had available data from a validated pregnancy food frequency questionnaire. Pregnancy dietary quality and diversity were estimated by a Pregnancy Healthy Eating Index [mean 99.3, standard deviation (SD) 9.9, range 48.8–128.3], and a Diet Diversity Score (mean 7.0, SD 1.0, range 1.6–9.8), respectively. Child CeD was captured by ≥2 diagnostic codes in the Norwegian Patient Registry. Logistic regression was used to estimate associations between pregnancy dietary quality, diversity and child CeD, adjusted for socioeconomic factors, and parents CeD [adjusted odds ratio (aOR), 95% confidence intervals (CI)]. CeD-susceptible human leukocyte antigen haplotypes (DQ2/DQ8) were present in 30,718 (45.5%). ResultsUp to mean age 16.0 (SD 1.8, 12.4–19.8) y, 1363 (1.6%) children were diagnosed with CeD. Lower as well as higher pregnancy dietary quality associated with a reduced risk of CeD in the child (<5th percentile aOR = 0.67, 95% CI: 0.48, 0.93, >95th percentile aOR = 0.71, 95% CI: 0.52, 0.98, respectively, nonlinear squared term P = 0.011). Analyses on genetically susceptible children, adjustments for pregnancy iron supplementation, gluten, and dietary fiber intake, and child early life dietary quality, gluten intake and iron supplementation, supported the finding. Pregnancy dietary diversity was not associated with child CeD (aOR = 1.00, 95% CI: 0.94, 1.07/score). ConclusionsIn this population-based study, lower as well as higher pregnancy dietary quality associated with a reduced risk of CeD diagnosis in the child. In contrast, no such association was observed with maternal dietary diversity.

Sri Lanka Child Growth Cohort (SLCGC): a population-based study on growth faltering of children

PurposeThis paper aims to describe the study design and baseline characteristics of the Sri Lanka Child Growth Cohort (SLCGC), which was established to assess the timing, pattern and determinants of...

Oxidative stress as a potential mechanism linking gestational phthalates exposure to cognitive development in infancy

BackgroundGestational exposure to phthalates, endocrine disrupting chemicals widely used in consumer products, has been associated with poor recognition memory in infancy. Oxidative stress may represent one pathway linking this association. Hence, we examined whether exposure to phthalates was associated with elevated oxidative stress during pregnancy, and whether oxidative stress mediates the relationship between phthalate exposure and recognition memory. MethodsOur analysis included a subset of mother-child pairs enrolled in the Illinois Kids Development Study (IKIDS, N = 225, recruitment years 2013–2018). Concentrations of 12 phthalate metabolites were quantified in 2nd trimester urine samples. Four oxidative stress biomarkers (8-isoprostane-PGF2α, 2,3-dinor-5,6-dihydro-8-isoPGF2α, 2,3-dinor-8-isoPGF2α, and prostaglandin-F2α) were measured in 2nd and 3rd trimester urine. Recognition memory was evaluated at 7.5 months, with looking times to familiar and novel stimuli recorded via infrared eye-tracking. Novelty preference (proportion of time looking at a novel stimulus when paired with a familiar one) was considered a measure of recognition memory. Linear mixed effect models were used to estimate associations between monoethyl phthalate (MEP), sum of di(2-ethylhexyl) phthalate metabolites (ΣDEHP), sum of di(isononyl) phthalate metabolites (ΣDINP), and sum of anti-androgenic phthalate metabolites (ΣAA) and oxidative stress biomarkers. Mediation analysis was performed to assess whether oxidative stress biomarkers mediated the effect of gestational phthalate exposure on novelty preference. ResultsThe average maternal age at delivery was 31 years and approximately 50 % of participants had a graduate degree. A natural log unit increase in ΣAA, ΣDINP, and ΣDEHP was associated with a statistically significant increase in 8-isoPGF2α, 2,3-dinor-5,6-dihydro-8-isoPGF2α, and 2,3-dinor-8-isoPGF2α. The association was greatest in magnitude for ΣAA and 2,3-dinor-5,6-dihydro-8-isoPGF2α (β = 0.45, 95 % confidence interval = 0.14, 0.76). The relationship between ΣAA, ΣDINP, ΣDEHP, and novelty preference was partially mediated by 2,3-dinor-8-isoPGF2α. ConclusionsGestational exposure to some phthalates is positively associated with oxidative stress biomarkers, highlighting one mechanistic pathway through which these chemicals may impair early cognitive development.

Perinatal maternal depression and the risk of childhood asthma in offspring: A meta-analysis.

Previous studies have yielded conflicting results regarding the link between maternal perinatal depression and asthma in children. To provide a clearer understanding of this relationship, a comprehensive meta-analysis was carried out to evaluate the association mentioned above. A comprehensive review of observational studies was conducted by searching electronic databases including Medline, Embase, and Web of Science. The data were combined using a randomized-effects model taking into account potential variations. Subgroup analyses were performed to evaluate the possible impact of study characteristics on outcomes. Ten cohort studies, which included 833,230 mother-child pairs, were examined in the analysis. Maternal depressive symptoms during the perinatal period were associated with an increased risk of asthma in offspring (risk ratio [RR]: 1.24, 95% confidence interval [CI]: 1.19 to 1.30, p < 0.001; I2 = 0%). Further sensitivity analyses restricted to multivariate studies (RR: 1.24, 95% CI: 1.19 to 1.30, p < 0.001; I2 = 0%) or studies where asthma was diagnosed in children aged three years or older (RR: 1.24, 95% CI: 1.19 to 1.30, p < 0.001; I2 = 0%) revealed consistent outcomes. Subgroup analyses according to study design, methods for the diagnosis of maternal depression, timing for the evaluation of maternal depression, methods for the validation of asthma in offspring, adjustment of maternal smoking during pregnancy and of maternal asthma, or study quality score showed similar results (p for subgroup difference all > 0.05). Maternal perinatal depression appears to be significantly linked to a higher occurrence of childhood asthma in children.

Associations between maternal diet, family eating habits and preschool children’s dietary patterns: insights from the UPBEAT trial

BackgroundDietary behaviours in early life often track across the life course, influencing the development of adverse health outcomes such as obesity and cardiovascular disease. This study aimed to explore the between dietary patterns (DP) in preschool children and maternal DP and family eating habits.MethodsWe conducted a secondary analysis of 488 mother-child pairs from the UK pregnancy Better Eating and Activity Trial (UPBEAT) at 3-year follow-up. Previously published DP from mothers and children (derived from food-frequency questionnaires and exploratory factor analysis) were used. Mothers’ DP were “Fruits-Vegetables”, “African-Caribbean”, “Processed and Snacks”, and children’s DP were “Prudent”, “Processed-Snacking”, and “African-Caribbean”. Family meal environments were evaluated using a 5-point Likert scale.ResultsLinear regression models revealed that child’s prudent pattern was positively associated with maternal Fruits-Vegetables (B = 0.18 (0.08, 0.27)), Snacks patterns (B = 0.10 (0.01, 0.18)), and eating the same foods during meals (B = 0.25 (0.07, 0.43)). Child’s Processed-Snacking pattern was directly associated with maternal Processed (B = 0.22 (0.13, 0.30)) and Snacks (B = 0.27 (0.18, 0.36)) patterns, receiving food as reward (B = 0.22 (0.04, 0.39)) and watching TV during meals (B = 0.27 (0.09, 0.45)). Finally, the child African-Caribbean pattern was directly associated with that from the mother (B = 0.41 (0.33, 0.50)) and watching TV during meals (B = 0.15 (0.09, 0.30)), and inversely associated with maternal processed (B=-0.09 (-0.17, -0.02)) and snacking (B=-0.08 (-0.15, -0.04)) patterns.ConclusionsUnhealthy dietary patterns in childhood are directly linked to similar maternal patterns and family meal behaviours, such as television viewing and food rewards. These findings highlight targetable behaviours for public health interventions.