Publications by authors named "Elizabeth C Matsui"

A growing literature within the field of air pollution exposure assessment addresses the issue of environmental justice. Leveraging the increasing availability of exposure datasets with broad spatial coverage and high spatial resolution, a number of works have assessed inequalities in exposure across racial/ethnic and other socioeconomic groupings. However, environmental justice research presents the additional need to evaluate exposure inequity-inequality that is systematic, unfair, and avoidable-which may be framed in several ways.

View Article and Find Full Text PDF

Background: Latinx children in the United States experience disparities in asthma control and asthma-related functional outcomes compared to non-Latinx White children, including more school absences, emergency department visits, and hospitalizations for asthma. Stress appears to play a role in asthma control, but interventions designed to address the role of stress in asthma control for Latinx children are limited.

Method: The current randomized controlled trial tests the effects of Adapt 2 Asthma (A2A), a family-based coping skills and asthma management intervention tailored to the stressors, strengths, and cultural beliefs of Latinx families, compared to an asthma self-management control arm (the Asthma Plan for Kids; APK).

View Article and Find Full Text PDF
Article Synopsis
  • Pesticides, particularly chlorpyrifos, may negatively affect respiratory health and contribute to asthma symptoms among low-income, Black children in Baltimore City, with limited existing research on this issue.
  • A study involving 148 children with asthma measured various pesticide biomarker concentrations in their urine over a year, linking higher levels of specific biomarkers to increased asthma-related symptoms and healthcare needs.
  • Findings indicated that exposure to higher levels of chlorpyrifos (TCPY) was significantly associated with worsened asthma symptoms, including increased coughing, wheezing, and chest tightness, suggesting a potential harmful impact of these pesticides on pediatric respiratory health.
View Article and Find Full Text PDF

In the United States, Black and Latino children with asthma are more likely than White children with asthma to require emergency department visits or hospitalizations because of an asthma exacerbation. Although many cite patient-level socioeconomic status and access to health care as primary drivers of disparities, there is an emerging focus on a major root cause of disparities-systemic racism. Current conceptual models of asthma disparities depict the historical and current effects of systemic racism as the foundation for unequal exposures to social determinants of health, environmental exposures, epigenetic factors, and differential healthcare access and quality.

View Article and Find Full Text PDF

Background: Certain environmental allergen exposures are more common in disadvantaged communities and may contribute to differences in susceptibility to upper respiratory infections (URIs).

Objectives: We examined associations between indoor allergens and: (1) URI; (2) URI + cold symptoms; (3) URI + cold symptoms + pulmonary eosinophilic inflammation (fraction of exhaled nitric oxide ≥20 ppb); and (4) URI + cold symptoms + reduced lung function (percent predicted forced expiratory volume in 1 second of <80%).

Methods: We used data from the Environmental Control as Add-on Therapy for Childhood Asthma (ECATCh) study.

View Article and Find Full Text PDF
Article Synopsis
  • Emerging research indicates that endocrine disrupting chemicals (EDCs) found in personal care products can negatively impact health, particularly for Black individuals who use more products and have high asthma rates.
  • This study investigates the link between EDC exposure and product usage in 110 Black children with asthma, aged 8-17, in Baltimore City, examining their recent consumer habits and urine concentrations of specific EDCs.
  • Results show that using air fresheners, scented candles, and canned foods is associated with higher levels of certain EDCs, highlighting a potential risk factor for these children’s health.
View Article and Find Full Text PDF

Addressing patient adherence is a key element in ensuring positive health outcomes and improving health-related quality of life for patients with atopic and immunologic disorders. Understanding the complex etiologies of patient nonadherence and identifying real-world solutions is important for clinicians, patients, and systems to design and effect change. This review serves as an important resource for defining key issues related to patient nonadherence and outlines solutions, resources, knowledge gaps, and advocacy areas across five domains: health care access, financial considerations, socioenvironmental factors, health literacy, and psychosocial factors.

View Article and Find Full Text PDF

Background: The extent to which incidence rates of asthma-related emergency department (ED) visits vary from neighborhood to neighborhood and predictors of neighborhood-level asthma ED visit burden are not well understood.

Objective: We aimed to describe the census tract-level spatial distribution of asthma-related ED visits in Central Texas and identify neighborhood-level characteristics that explain variability in neighborhood-level asthma ED visit rates.

Methods: Conditional autoregressive models were used to examine the spatial distribution of asthma-related ED visit incidence rates across census tracts in Travis County, Texas, and assess the contribution of census tract characteristics to their distribution.

View Article and Find Full Text PDF

Background: Asthma exacerbations are an important cause of emergency department visits but much remains unknown about the role of environmental triggers including viruses and allergenic pollen. A better understanding of spatio-temporal variation in exposure and risk posed by viruses and pollen types could help prioritize public health interventions.

Objective: Here we quantify the effects of regionally important Cupressaceae pollen, tree pollen, other pollen types, rhinovirus, seasonal coronavirus, respiratory syncytial virus, and influenza on asthma-related emergency department visits for people living near eight pollen monitoring stations in Texas.

View Article and Find Full Text PDF

Many vulnerable people lose their health or lives each year as a result of unhealthy environmental conditions that perpetuate medical conditions within the scope of allergy and immunology specialists' expertise. While detrimental environmental factors impact all humans globally, the effect is disproportionately more profound in impoverished neighborhoods. Environmental injustice is the inequitable exposure of disadvantaged populations to environmental hazards.

View Article and Find Full Text PDF

The share of Black or Latinx residents in a census tract remains associated with asthma-related emergency department (ED) visit rates after controlling for socioeconomic factors. The extent to which evident disparities relate to the within-city heterogeneity of long-term air pollution exposure remains unclear. To investigate the role of intraurban spatial variability of air pollution in asthma acute care use disparity.

View Article and Find Full Text PDF

Background: Racial disparities in atopic disease (atopic dermatitis [AD], asthma, and allergies) prevalence are well documented. Despite strong associations between race and socioeconomic deprivation in the United States, and socioeconomic status (SES) and atopic diseases, the extent to which SES explains these disparities is not fully understood.

Objective: We sought to identify racial disparities in childhood atopic disease prevalence and determine what proportion of those disparities is mediated by SES.

View Article and Find Full Text PDF

Importance: Housing status is an important health determinant, yet little is known about unstable housing among individuals receiving dialysis.

Objective: To determine factors associated with unstable housing among US veterans receiving dialysis and to estimate the association of unstable housing with risk of death.

Design, Setting, And Participants: This retrospective cohort study used data from the US Veterans Health Administration (VHA) and the US Renal Data System for patients who initiated dialysis between October 1, 2012, and December 31, 2018.

View Article and Find Full Text PDF

Background: It is unclear whether there are racial/ethnic disparities in the risk of upper respiratory viral infection acquisition and/or lower respiratory manifestations.

Methods: We studied all children and children with asthma aged 6 to 17 years in the National Health and Nutrition Examination Survey (2007-2012) to evaluate (1) the association between race/ethnicity and upper respiratory infection (URI) and (2) whether race/ethnicity is a risk factor for URI-associated pulmonary eosinophilic inflammation or decreased lung function.

Results: Children who identified as Black (adjusted odds ratio [aOR], 1.

View Article and Find Full Text PDF

Determining biomarkers of responses to environmental exposures and evaluating whether they predict respiratory outcomes may help optimize environmental and medical approaches to childhood asthma. Relative mitochondrial (mt) DNA abundance and other potential mitochondrial indicators of oxidative stress may provide a sensitive metric of the child's shifting molecular responses to its changing environment. We leveraged two urban childhood cohorts (Environmental Control as Add-on Therapy in Childhood Asthma (ECATCh); Columbia Center for Children's Environmental Health (CCCEH)) to ascertain whether biomarkers in buccal mtDNA associate with airway inflammation and altered lung function over 6 months of time and capture biologic responses to multiple external stressors such as indoor allergens and fine particulate matter (PM).

View Article and Find Full Text PDF

Importance: Structural racism has been implicated in the disproportionally high asthma morbidity experienced by children living in disadvantaged, urban neighborhoods. Current approaches designed to reduce asthma triggers have modest impact.

Objective: To examine whether participation in a housing mobility program that provided housing vouchers and assistance moving to low-poverty neighborhoods was associated with reduced asthma morbidity among children and to explore potential mediating factors.

View Article and Find Full Text PDF

Environmental justice is the concept that all people have the right to live in a healthy environment, to be protected against environmental hazards, and to participate in decisions affecting their communities. Communities of color and low-income populations live, work, and play in environments with disproportionate exposure to hazards associated with allergic disease. This unequal distribution of hazards has contributed to health disparities and is largely the result of systemic racism that promotes segregation of neighborhoods, disinvestment in predominantly racial/ethnic minority neighborhoods, and discriminatory housing, employment, and lending practices.

View Article and Find Full Text PDF

Objective: People of color and lower socioeconomic status groups in the USA, including those of Mexican origin, are exposed to higher concentrations of air pollution, including fine particulate matter (PM). Associations were examined between neighborhood air pollution levels and the psychosocial and demographic characteristics of linguistically isolated Mexican-origin immigrant families. Housing mobility and changes in air pollution levels due to changes in residence were also examined.

View Article and Find Full Text PDF

Background: There are marked disparities in asthma-related emergency department (ED) visit rates among children by race and ethnicity. Following the implementation of coronavirus disease 2019 (COVID-19) prevention measures, asthma-related ED visits rates declined substantially. The decline has been attributed to the reduced circulation of upper respiratory viruses, a common trigger of asthma exacerbations in children.

View Article and Find Full Text PDF

Background: Air trapping is an obstructive phenotype that has been associated with more severe and unstable asthma in children. Air trapping has been defined using pre- and postbronchodilator spirometry. The causes of air trapping are not completely understood.

View Article and Find Full Text PDF