Cadmium levels in a North Carolina cohort: Identifying risk factors for elevated levels during pregnancy

The objectives of this study were to examine cadmium (Cd) levels and relationships to demographics in an observational, prospective pregnancy cohort study in Durham County, North Carolina. Multivariable models were used to compare blood Cd levels across demographic characteristics. The relative risk of having a blood Cd level that exceeds the US national median (0.32 μg/l) was estimated. Overall, >60% of the women had an elevated (>0.32 μg/l) blood Cd level. Controlling for confounding variables, smoking was associated with 21% (95% CI: 15–28%) increased risk for an elevated blood Cd level. High Cd levels were also observed in non-smokers and motivated smoking status-stratified models. Race, age, education, relationship status, insurance status and cotinine level were not associated with risk of elevated Cd levels among smokers; however, older age and higher cotinine levels were associated with elevated Cd levels among non-smokers. Taken together, more than half of pregnant women in this cohort had elevated blood Cd levels. Additionally, among non-smokers, 53% of the women had elevated levels of Cd, highlighting other potential sources of exposure. This study expands on the limited data describing Cd levels in pregnant populations and highlights the importance of understanding Cd exposures among non-smokers. Given the latent health risks of both smoking and Cd exposure, this study further highlights the need to biomonitor for exposure to toxic metals during pregnancy among all women of child-bearing age

Instructional Collaborations in Diverse Cultural and Multilingual Contexts: Information Literacy Initiatives for the 21st Century

Recorded video panel presentation with slides and captionsThe growing importance of 21st century literacies in higher education is expanding the instructional reach of Latin American and Caribbean Studies (LAC) librarians in instructional courses. LAC librarians are actively pursuing creative pedagogical approaches to support curricula and research that address important areas of linguistic diversity and social justice as well as critical issues including decolonization, global citizenship dispositions, and U.S. migration/immigration. This panel will highlight the diverse LAC pedagogy and instructional practices of three LAC librarians from the Seminar on the Acquisition of Latin American Library Materials (SALALM) who will discuss their instructional design to information literacy instruction that is unique to area studies and also expanding into other areas such as digital scholarship and data services. This moderated panel will exchange ideas and approaches and reflect together on the potential of information literacy instruction to support global and critical issues.The Seminar on the Acquisition of Latin American Library Materials (SALALM

Maternal Cadmium Levels during Pregnancy Associated with Lower Birth Weight in Infants in a North Carolina Cohort

Cadmium (Cd) is a ubiquitous environmental contaminant, a known carcinogen, and understudied as a developmental toxicant. In the present study, we examined the relationships between Cd levels during pregnancy and infant birth outcomes in a prospective pregnancy cohort in Durham, North Carolina. The study participants (n = 1027) had a mean Cd level of 0.46 µg/L with a range of <0.08 to 2.52 µg/L. Multivariable models were used to establish relationships between blood Cd tertiles and fetal growth parameters, namely birth weight, low birth weight, birth weight percentile by gestational age, small for gestational age, pre-term birth, length, and head circumference. In multivariable models, high maternal blood Cd levels (≥0.50 µg/L) during pregnancy were inversely associated with birth weight percentile by gestational age (p = 0.007) and associated with increased odds of infants being born small for gestational age (p<0.001). These observed effects were independent of cotinine-defined smoking status. The results from this study provide further evidence of health risks associated with early life exposure to Cd among a large pregnancy cohort

Mercury Levels in an Urban Pregnant Population in Durham County, North Carolina

The adverse effects of prenatal mercury exposure, most commonly resulting from maternal fish consumption, have been detected at very low exposure levels. The omega-3 fatty acids found in fish, however, have been shown to support fetal brain and vision development. Using data from a prospective, cohort study of pregnant women from an inland area in the US South, we sought to understand the fish consumption habits and associated mercury levels across subpopulations. Over 30% of women had at least 1 μg/L of mercury in their blood, and about 2% had blood mercury levels above the level of concern during pregnancy (≥3.5 μg/L). Mercury levels were higher among Asian/Pacific Islander, older, higher educated, and married women. Fish consumption from any source was reported by 2/3 of the women in our study, with older women more likely to consume fish. Despite eating more fish meals per week, lower income, lower educated women had lower blood mercury levels than higher income, higher educated women. This suggests the different demographic groups consume different types of fish. Encouraging increased fish consumption while minimizing mercury exposure requires careful crafting of a complex health message

Air Pollution and Pregnancy Outcomes

Children born with low birth weight, preterm, or with fetal growth restriction may suffer from significant short and long term morbidity and mortality, making adverse pregnancy outcomes a major public health concern with significant health, social, and economic consequences for families, communities, and the nation. Despite aggressive public heath campaigns, racial and geographic disparities in pregnancy outcomes persist. Disproportionate exposure to environmental hazards may partially account for such disparities. In this chapter, we synthesize the existing literature connecting air pollution exposures and pregnancy outcomes. We begin by providing readers with background on adverse pregnancy outcomes, including their consequences and documented disparities. Next, we summarize existing research on air pollution and pregnancy outcomes with a systematic literature review, describing the state of knowledge regarding associations between each outcome and key pollutants. While the scientific literature clearly points to a detrimental association between maternal air pollution exposure and pregnancy outcomes, the literature does not yet provide a consensus understanding of the details of this association. Thus, we describe key methodological barriers and inconsistencies that make interpretation across studies challenging, noting why these issues arise, how they impact results, and how they may be addressed. Acknowledging these challenges and the need for additional research, this chapter highlights clear evidence of a negative association between air pollution and pregnancy outcomes. Future work addressing methodological issues and, perhaps most importantly, identifying causal pathways, is critical to establishing appropriate regulatory policy and protecting maternal and infant healt

A Multidimensional Approach to Characterizing Psychosocial Health During Pregnancy

Objectives Domains of psychosocial health have been separately connected to pregnancy outcomes. This study explores the relationship between five domains of psychosocial health and their joint association with prenatal health and pregnancy outcomes. Methods Women from a prospective cohort study in Durham, North Carolina were clustered based on measures of paternal support, perceived stress, social support, depression, and self-efficacy. Clusters were constructed using the K-means algorithm. We examined associations between psychosocial health and maternal health correlates, pregnancy intention, and pregnancy outcomes using Chi square tests and multivariable models. Results Three psychosocial health profiles were identified, with the first (Resilient; n = 509) characterized by low depression and perceived stress and high interpersonal support, paternal support, and self-efficacy. The second profile (Vulnerable; n = 278) was marked by high depression and perceived stress, and low interpersonal support, paternal support, and self-efficacy. The third profile (Moderate, n = 526) fell between the other profiles on all domains. Health correlates, pregnancy intention, and pregnancy outcomes varied significantly across profiles. Women with the vulnerable profile were more likely to have risky health correlates, have an unintended pregnancy, and deliver preterm. Women with the resilient profile had better birth outcomes and fewer deleterious health correlates, preconception and prenatally. Conclusions We posit that vulnerable psychosocial health, deleterious health correlates, and the stress which often accompanies pregnancy may interact to magnify risk during pregnancy. Identifying and intervening with women experiencing vulnerable psychosocial health may improve outcomes for women and their children