Publications by authors named "London S"

Background: Night shift work during pregnancy has been associated with differential DNA methylation in placental tissue, but no studies have explored this association in cord blood. We aimed to examine associations of maternal night shift work with cord blood DNA methylation.

Methods: A total of 4487 mother-newborn pairs from 7 studies were included.

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Introduction: By recent estimates, 40% of children worldwide are exposed to second-hand smoke (SHS), which has been associated with adverse health outcomes. While numerous studies have linked maternal smoking during pregnancy (MSDP) to widespread differences in child blood DNA methylation (DNAm), research specifically examining postnatal SHS exposure remains sparse. To address this gap, we conducted epigenome-wide meta-analyses to identify associations of postnatal SHS and child blood DNAm.

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The Europa Imaging System (EIS) consists of a Narrow-Angle Camera (NAC) and a Wide-Angle Camera (WAC) that are designed to work together to address high-priority science objectives regarding Europa's geology, composition, and the nature of its ice shell. EIS accommodates variable geometry and illumination during rapid, low-altitude flybys with both framing and pushbroom imaging capability using rapid-readout, 8-megapixel (4k × 2k) detectors. Color observations are acquired using pushbroom imaging with up to six broadband filters.

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  • - Children born via cesarean delivery have a greater risk of various health issues compared to those born vaginally, but the exact reasons are still not fully understood.
  • - A meta-analysis involving over 12,000 participants found six specific DNA methylation markers in newborns linked to cesarean delivery, but these markers did not persist into childhood.
  • - The study indicates that cesarean delivery affects certain blood cell proportions at birth, but further research is necessary to understand its long-term impacts on child health.
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  • This study investigates the link between an epigenetic risk score (ERS) related to alcohol consumption and blood pressure traits, finding significant associations between higher ERS and increased blood pressure levels among participants.
  • In the analysis of 3,898 individuals from the Framingham Heart Study, each unit increase in the ERS correlated with a rise in systolic blood pressure (SBP) by almost 2 mm Hg and diastolic blood pressure (DBP) by about 0.68 mm Hg.
  • The research suggests that the ERS could serve as a useful tool for assessing cardiovascular risks linked to alcohol consumption, especially in cases where self-reported data may be unreliable.
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  • Low maternal vitamin D levels during pregnancy have been linked to various health issues in offspring and may affect DNA methylation, a process that influences gene expression.
  • The study examined the relationship between maternal vitamin D insufficiency (defined as less than 75 nmol/L) and DNA methylation patterns in the cord blood of newborns using data from 3738 mother-child pairs across seven cohorts.
  • Despite a significant prevalence of vitamin D insufficiency among the mothers (ranging from 44.3% to 78.5%), the research found no significant association between maternal vitamin D levels and DNA methylation at the analyzed sites after adjusting for various factors.
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Objectives: The incidence of congenital hypothyroidism (CH) has increased worldwide over the last decades, mainly due to the lowering of screening thresholds, resulting in the increased identification of newborns with transient CH. Several studies have reported the prevalence and the predictive parameters of transient CH, but reports on the long-term outcome are rare. This study aimed to assess the long-term course of neonates with transient CH.

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  • Drowning significantly contributes to global health issues, often linked to human factors like inexperience, intoxication, and adverse water conditions.
  • There's a lack of research on unusual drowning incidents involving healthy individuals, leading to a need for better understanding and assessment of these cases.
  • Proper investigation of drowning incidents is crucial, and clinicians should consider rare diagnoses, potentially involving postmortem genetic testing, to gain insights that could benefit surviving victims and their families.
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Purpose: Over 550 loci have been associated with human pulmonary function in genome-wide association studies (GWAS); however, the causal role of most remains uncertain. Single nucleotide polymorphisms in a disintegrin and metalloprotease domain 19 (ADAM19) are consistently related to pulmonary function in GWAS. Thus, we used a mouse model to investigate the causal link between Adam19 and pulmonary function.

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  • Cigarette smoking is known to alter DNA methylation at the AHRR gene, but this study investigates whether non-cigarette tobacco use, like pipe and cigar smoking, also affects AHRR methylation and health outcomes.
  • Data from four cohorts (1985-2002) revealed that exclusive non-cigarette tobacco users had lower AHRR methylation compared to those who smoked cigarettes, with non-cigarette users showing less dramatic effects.
  • The results indicate that lower AHRR methylation in non-cigarette tobacco users is linked to worse respiratory symptoms and higher mortality rates, suggesting AHRR methylation could be a marker for health risks among these smokers.
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Background: Chronic exposure to microorganisms inside homes can impact respiratory health. Few studies have used advanced sequencing methods to examine adult respiratory outcomes, especially continuous measures. We aimed to identify metagenomic profiles in house dust related to the quantitative traits of pulmonary function and airway inflammation in adults.

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Background: Brain imaging studies may provide etiologic insight into observed links between lung function and dementia and stroke.

Objective: We evaluated associations of lung function measures with brain MRI markers of vascular and neurodegenerative disease in the ARIC Neurocognitive Study, as few studies have examined the associations.

Methods: Lung function was measured at participants' midlife in 1990-1992 (mean age = 56±5 years) and later-life in 2011-2013 (mean age = 76±5 years), and brain MRI was performed in 2011-2013.

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Worldwide trends to delay childbearing have increased parental ages at birth. Older parental age may harm offspring health, but mechanisms remain unclear. Alterations in offspring DNA methylation (DNAm) patterns could play a role as aging has been associated with methylation changes in gametes of older individuals.

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Background: Dementia is a common and progressive condition whose prevalence is growing worldwide. It is challenging for healthcare systems to provide continuity in clinical services for all patients from diagnosis to death.

Aims: To test whether individuals who are most likely to need enhanced care later in the disease course can be identified at the point of diagnosis, thus allowing the targeted intervention.

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  • Scientists studied how drinking alcohol affects our DNA and blood pressure.
  • They found that for each drink a person consumes daily, blood pressure increases a bit and they are more likely to develop high blood pressure.
  • However, over time, drinking habits didn't seem to change blood pressure levels, showing that tracking alcohol effects can help understand health.
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Purpose: Over 550 loci have been associated with human pulmonary function in genome-wide association studies (GWAS); however, the causal role of most remains uncertain. Single nucleotide polymorphisms in a disintegrin and metalloprotease domain 19 () are consistently related to pulmonary function in GWAS. Thus, we used a mouse model to investigate the causal link between and pulmonary function.

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Introduction: Positive maternal mental health is associated with improved outcomes for infants, and yet the consideration of maternal mental health is often neglected in breastfeeding interventions. Breastfeeding interventions typically focus on breastfeeding promotion, and do not always include supports for the mother. This may result in isolated perceived pressure to breastfeed, the mental health impacts of which are not well understood.

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American Indian (AI) women are at risk of alcohol-exposed pregnancy (AEP) due to the higher prevalence of alcohol use disorders (AUDs) and risky drinking. The Native Changing High-Risk Alcohol Use and Increasing Contraception Effectiveness Study (Native CHOICES) was implemented in partnership with a Northern Plains Tribal community to address the effectiveness of a brief, motivational interviewing-based intervention to reduce AEP risk among adult AI women. A subgroup of the participants shared their perspectives in a qualitative interview conducted following the completion of the six-month post-baseline data collection.

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In lung, thromboxane A2 (TXA2) activates the TP receptor to induce proinflammatory and bronchoconstrictor effects. Thus, TP receptor antagonists and TXA2 synthase inhibitors have been tested as potential asthma therapeutics in humans. Th9 cells play key roles in asthma and regulate the lung immune response to allergens.

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  • Scientists studied how drinking alcohol affects our health by looking at changes in our DNA caused by alcohol, called DNA methylation.
  • They created a special score to measure the effects of alcohol on people's health using data from nearly 4,000 people.
  • They found that higher alcohol consumption was linked to increased blood pressure, but it didn't change over time or cause long-term issues with high blood pressure.
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Tuberculosis (TB) is still a major global health challenge, killing over 1.5 million people each year, and hence, there is a need to identify and develop novel treatments for Mycobacterium tuberculosis (M. tuberculosis).

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Background: Adult asthma is complex and incompletely understood. Plasma proteomics is an evolving technique that can both generate biomarkers and provide insights into disease mechanisms. We aimed to identify plasma proteomic signatures of adult asthma.

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Background: Smoking impacts DNA methylation, but data are lacking on smoking-related differential methylation by sex or dietary intake, recent smoking cessation (<1 year), persistence of differential methylation from in utero smoking exposure, and effects of environmental tobacco smoke (ETS).

Methods: We meta-analysed data from up to 15,014 adults across 5 cohorts with DNA methylation measured in blood using Illumina's EPIC array for current smoking (2560 exposed), quit < 1 year (500 exposed), in utero (286 exposed), and ETS exposure (676 exposed). We also evaluated the interaction of current smoking with sex or diet (fibre, folate, and vitamin C).

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Higher birth order is associated with altered risk of many disease states. Changes in placentation and exposures to in utero growth factors with successive pregnancies may impact later life disease risk via persistent DNA methylation alterations. We investigated birth order with Illumina DNA methylation array data in each of 16 birth cohorts (8164 newborns) with European, African, and Latino ancestries from the Pregnancy and Childhood Epigenetics Consortium.

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Polydimethylsiloxane (PDMS) organogel sponges were prepared and studied in order to understand the role of pore size in an elastomeric network on the ability to uptake and release organic solvents. PDMS organogel sponges have been produced according to sugar leaching techniques by adding two sugar templates of different forms and grain sizes (a sugar cube template and a powdered sugar template), in order to obtain materials differing in porosity, pore size distribution, and solvent absorption and liquid retention capability. These materials were compared to PDMS organogel slabs that do not contain pores.

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