Association of Urinary Cadmium Concentration With Cognitive Impairment in US Adults: A Longitudinal Cohort Study.

BACKGROUND AND OBJECTIVES: Studies have indicated that cadmium (Cd) exposure is associated with neurotoxicity. However, data linking Cd exposure to cognitive impairment are sparse. We aimed to investigate the association between urinary Cd concentration and cognitive impairment in US adults. METHODS: The REasons for Geographic and Racial Differences in Stroke (REGARDS) study is an ongoing population-based prospective cohort study that enrolled 30,239 Black and White US adults aged 45 years or older at baseline (2003-2007). In a randomly selected subcohort of REGARDS participants who were free of cognitive impairment or stroke at baseline, certain trace element concentrations, including urinary creatinine-corrected Cd, were measured using biospecimens collected and stored at baseline. During an average of 10 years of follow-up, global cognitive impairment was assessed annually using the Six-Item Screener, and domain-based cognitive impairment, including verbal learning, memory, and executive function, was evaluated every other year using the Enhanced Cognitive Battery. Multivariable-adjusted logistic regression models were used to examine the association between urinary Cd concentration and the odds of global or domain-based cognitive impairment. RESULTS: A total of 2,172 participants (mean age: 64.1 ± 9.0 years; female: 54.8%; Black participants: 38.7%) with available data on urinary Cd concentration, including 195 cases of global cognitive impairment and 53 cases of domain-based cognitive impairment, were included in the analyses. While there was no association between Cd and cognitive impairment in the full sample, there was a significant positive association of urinary Cd concentration with global cognitive impairment among White but not Black participants. The odds of cognitive impairment for White participants in the high urinary Cd concentration group (≥median) were doubled compared with those in the low urinary Cd group (odds ratio 2.07, 95% CI 1.18-3.64). Sex, age, region, smoking pack-years, alcohol consumption, and other related metals did not materially modify the associations of interest. DISCUSSION: Findings from this prospective cohort study suggest that urinary Cd concentrations are associated with global cognitive impairment among White but not Black individuals. Further studies with repeatedly measured Cd exposure, larger sample sizes, and longer duration are needed to confirm our findings and explore the potential explanations for the observed racial discrepancy, such as the impact of smoking.

Analysis of ductal carcinoma in situ by self-reported race reveals molecular differences related to outcome.

BACKGROUND: Ductal carcinoma in situ (DCIS) is a non-obligate precursor to invasive breast cancer (IBC). Studies have indicated differences in DCIS outcome based on race or ethnicity, but molecular differences have not been investigated. METHODS: We examined the molecular profile of DCIS by self-reported race (SRR) and outcome groups in Black (n = 99) and White (n = 191) women in a large DCIS case-control cohort study with longitudinal follow up. RESULTS: Gene expression and pathway analyses suggested that different genes and pathways are involved in diagnosis and ipsilateral breast outcome (DCIS or IBC) after DCIS treatment in White versus Black women. We identified differences in ER and HER2 expression, tumor microenvironment composition, and copy number variations by SRR and outcome groups. CONCLUSIONS: Our results suggest that different molecular mechanisms drive initiation and subsequent ipsilateral breast events in Black versus White women.

Myxospore density of Kudoa inornata varies significantly within symmetrical white muscle tissue replicates of its fish host, the spotted seatrout, Cynoscion nebulosus.

The spotted seatrout, Cynoscion nebulosus, is a popular game fish in the southeastern USA. It is estimated that nearly 90% of the adult population in South Carolina estuaries are infected in their skeletal muscle by the myxosporean, Kudoa inornata. However, little is known about this parasite's biology, including the distribution and densities of myxospores within tissues of infected fish, which we expect affect the physiology of their hosts. In order to correlate densities with physiological parameters in future studies, we quantified the myxospores density in muscle and characterized the variation among individual fish. Naïve juvenile seatrout was experimentally infected via presumed K. inornata actinospores exposure to raw seawater. A plug of muscle was extracted from two bilaterally symmetrical regions in the epaxial fillet from fresh and frozen carcasses. Variation in density data was calculated both within and among individuals. Within individuals, density counts were compared between left- and right-side biopsies. There was no significant difference between fresh and frozen plugs, and variation among individuals accounted for the greatest proportion of variation at 68.8%, while variation within individuals was substantial at 25.6%. Simulation and correlation tests confirmed that bilaterally symmetrical replicates varied significantly within individuals. When sampled from areas surrounding the initial biopsies, myxospore density estimates were more similar than between sides. Our findings have important implications for sampling design, particularly for studies investigating physiological parameters at the cellular or molecular level in association with parasite infection.

Optimal Pair Matching Combined with Machine Learning Predicts a Significant Reduction in Myocardial Infarction Risk in African Americans Following Omega-3 Fatty Acid Supplementation.

Conflicting clinical trial results on omega-3 highly unsaturated fatty acids (n-3 HUFA) have prompted uncertainty about their cardioprotective effects. While the VITAL trial found no overall cardiovascular benefit from n-3 HUFA supplementation, its substantial African American (AfAm) enrollment provided a unique opportunity to explore racial differences in response to n-3 HUFA supplementation. The current observational study aimed to simulate randomized clinical trial (RCT) conditions by matching 3766 AfAm and 15,553 non-Hispanic White (NHW) individuals from the VITAL trial utilizing propensity score matching to address the limitations related to differences in confounding variables between the two groups. Within matched groups (3766 AfAm and 3766 NHW), n-3 HUFA supplementation's impact on myocardial infarction (MI), stroke, and cardiovascular disease (CVD) mortality was assessed. A weighted decision tree analysis revealed belonging to the n-3 supplementation group as the most significant predictor of MI among AfAm but not NHW. Further logistic regression using the LASSO method and bootstrap estimation of standard errors indicated n-3 supplementation significantly lowered MI risk in AfAm (OR 0.17, 95% CI [0.048, 0.60]), with no such effect in NHW. This study underscores the critical need for future RCT to explore racial disparities in MI risk associated with n-3 HUFA supplementation and highlights potential causal differences between supplementation health outcomes in AfAm versus NHW populations.

The War on Drugs, Racialized Capitalism, and Health Care Utilization Among White People Who Use Drugs in 22 Rural Appalachian Counties.

Objectives. To analyze War on Drugs encounters and their relationships to health care utilization among White people who use drugs (PWUD) in 22 Appalachian rural counties in Kentucky, West Virginia, Ohio, and North Carolina. Methods. We recruited White PWUD using chain referral sampling in 2018 to 2020. Surveys asked about criminal-legal encounters, unmet health care needs, and other covariates. We used generalized estimating equations to regress unmet need on criminal-legal encounters in multivariable models. Results. In this sample (n = 957), rates of stop and search, arrest, incarceration, and community supervision were high (44.0%, 26.8%, 36.3%, and 31.1%, respectively), as was unmet need (68.5%). Criminal-legal encounters were unrelated to unmet need (stops: adjusted prevalence ratio [APR] = 1.13; 95% confidence interval [CI] = 0.97, 1.32; arrest: APR = 0.95; 95% CI = 0.78, 1.15; incarceration: APR = 1.01; 95% CI = 0.89, 1.14; community supervision: APR = 0.99; 95% CI = 0.90, 1.09). Conclusions. Contrasting with findings from predominantly Black urban areas, criminal-legal encounters and unmet need were unrelated among White Appalachian PWUD. Research should explore whether and under what conditions White supremacy's benefits might buffer adverse impacts of the War on Drugs in Appalachia. (Am J Public Health. 2024;114(10):1086-1096. https://doi.org/10.2105/AJPH.2024.307744).

A protein risk score for all-cause and respiratory-specific mortality in non-Hispanic white and African American individuals who smoke.

Protein biomarkers are associated with mortality in cardiovascular disease, but their effect on predicting respiratory and all-cause mortality is not clear. We tested whether a protein risk score (protRS) can improve prediction of all-cause mortality over clinical risk factors in smokers. We utilized smoking-enriched (COPDGene, LSC, SPIROMICS) and general population-based (MESA) cohorts with SomaScan proteomic and mortality data. We split COPDGene into training and testing sets (50:50) and developed a protRS based on respiratory mortality effect size and parsimony. We tested multivariable associations of the protRS with all-cause, respiratory, and cardiovascular mortality, and performed meta-analysis, area-under-the-curve (AUC), and network analyses. We included 2232 participants. In COPDGene, a penalized regression-based protRS was most highly associated with respiratory mortality (OR 9.2) and parsimonious (15 proteins). This protRS was associated with all-cause mortality (random effects HR 1.79 [95% CI 1.31-2.43]). Adding the protRS to clinical covariates improved all-cause mortality prediction in COPDGene (AUC 0.87 vs 0.82) and SPIROMICS (0.74 vs 0.6), but not in LSC and MESA. Protein-protein interaction network analyses implicate cytokine signaling, innate immune responses, and extracellular matrix turnover. A blood-based protein risk score predicts all-cause and respiratory mortality, identifies potential drivers of mortality, and demonstrates heterogeneity in effects amongst cohorts.

Trends in US Pediatric Asthma Hospitalizations, by Race and Ethnicity, 2012-2020.

Introduction: Some racial and ethnic minority communities have long faced a higher asthma burden than non-Hispanic White communities. Prior research on racial and ethnic pediatric asthma disparities found stable or increasing disparities, but more recent data allow for updated analysis of these trends. Methods: Using 2012-2020 National Inpatient Sample data, we estimated the number of pediatric asthma hospitalizations by sex, age, and race and ethnicity. We converted these estimates into rates using data from the US Census Bureau and then conducted meta-regression to assess changes over time. Because the analysis spanned a 2015 change in diagnostic coding, we performed separate analyses for periods before and after the change. We also excluded 2020 data from the regression analysis. Results: The number of pediatric asthma hospitalizations decreased over the analysis period. Non-Hispanic Black children had the highest prevalence (range, 9.8-36.7 hospitalizations per 10,000 children), whereas prevalence was lowest among non-Hispanic White children (range, 2.2-9.4 hospitalizations per 10,000 children). Although some evidence suggests that race-specific trends varied modestly across groups, results overall were consistent with a similar rate of decrease across all groups (2012-2015, slope = -0.83 [95% CI, -1.14 to -0.52]; 2016-2019, slope = -0.35 [95% CI, -0.58 to -0.12]). Conclusion: Non-Hispanic Black children remain disproportionately burdened by asthma-related hospitalizations. Although the prevalence of asthma hospitalization is decreasing among all racial and ethnic groups, the rates of decline are similar across groups. Therefore, previously identified disparities persist. Interventions that consider the specific needs of members of disproportionately affected groups may reduce these disparities.

Description and pathology of a new genus and species of fish blood fluke (Digenea: Aporocotylidae Odhner, 1912) infecting white mullet, Mugil curema Valenciennes, 1836 (Mugiliformes: Mugilidae) in Mobile Bay (northern Gulf of Mexico) with a phylogenetic analysis.

Three fish blood flukes (Aporocotylidae Odhner, 1912) infect mullets (Mugiliformes: Mugilidae): Cardicola mugilis Yamaguti, 1970 and Plethorchis acanthus Martin, 1975 infect striped mullet, Mugil cephalus Linnaeus, 1758 in the Central Pacific Ocean (Hawaiian Islands) and Brisbane River (Australia), respectively; Cardicola brasiliensis Knoff & Amato, 1992 infects Lebranche mullet, Mugil liza Valenciennes, 1836 from the Southwestern Atlantic Ocean (Brazil). White mullets were cast-netted from the mouth of Deer River, a coastal saltmarsh of Mobile Bay, in the north-central Gulf of Mexico and examined for blood fluke infections. Specimens of Mugilitrema labowskiae Warren & Bullard n. gen., n. sp. were found infecting the endocardial surface and inter-trabecular spaces of the atrium, ventricle, and bulbous arteriosus. The new genus and species differ from all other aporocotylids by having the combination of two post-caecal testes, a uterus with straight ascending and descending portions, and a common genital pore. The 28S analysis recovered the new species and P.acanthus as sister taxa and Aporocotylidae as monophyletic. Carditis associated with intense infections comprised endocardial hyperplasia, resulting in a thickened cardiac endothelium. Probable dead or deteriorating eggs in the myocardium were encapsulated by granulomas composed of epithelioid histiocytes. Live eggs infected the afferent artery of gill filaments and were associated with varied hyperplasia of the overlying epithelium and haemorrhaging from the afferent artery in high-intensity infections. The new species is the first aporocotylid infecting a mullet from the northwestern Atlantic Ocean and only the second description of demonstrable endocarditis attributed to an adult fish blood fluke infection.

Temporal Trends of Infant Mortality Secondary to Congenital Heart Disease: National CDC Cohort Analysis (1999-2020).

BACKGROUND: Infant mortality continues to be a significant problem for patients with congenital heart disease (CHD). Limited data exist on the recent trends of mortality in infants with CHD. METHODS: The CDC WONDER (Centers for Disease Control and Prevention Wide-Ranging Online Data for Epidemiologic Research) was queried to identify deaths occurring within the United States with CHD listed as one of the causes of death between 1999 and 2020. Subsequently, trends were calculated using the Joinpoint regression program (version 4.9.1.0; National Cancer Institute). RESULTS: A total of 47,015 deaths occurred in infants due to CHD at the national level from the year 1999 to 2020. The overall proportional infant mortality (compared to all deaths) declined (47.3% to 37.1%, average annual percent change [AAPC]: -1.1 [95% CI -1.6 to -0.6, p < 0.001]). There was a significant decline in proportional mortality in both Black (45.3% to 34.3%, AAPC: -0.5 [-0.8 to -0.2, p = 0.002]) and White patients (55.6% to 48.6%, AAPC: -1.2 [-1.7 to -0.7, p = 0.001]), with a steeper decline among White than Black patients. A statistically significant decline in the proportional infant mortality in both non-Hispanic (43.3% to 33.0%, AAPC: -1.3% [95% CI -1.9 to -0.7, p < 0.001]) and Hispanic (67.6% to 57.7%, AAPC: -0.7 [95% CI -0.9 to -0.4, p < 0.001]) patients was observed, with a steeper decline among non-Hispanic infant population. The proportional infant mortality decreased in males (47.5% to 53.1%, AAPC: -1.4% [-1.9 to -0.9, p < 0.001]) and females (47.1% to 39.6%, AAPC: -0.9 [-1.9 to 0.0, p = 0.05]). A steady decline in for both females and males was noted. CONCLUSION: Our study showed a significant decrease in CHD-related mortality rate in infants and age-adjusted mortality rate (AAMR) between 1999 and 2020. However, sex-based, racial/ethnic disparities were noted, with female, Black, and Hispanic patients showing a lesser decline than male, White, and non-Hispanic patients.

Lower PrEP Retention among Young and Black Clients Accessing PrEP at a Cluster of Safety Net Clinics for Gay and Bisexual Men.

Young men of color who have sex with men are vulnerable to HIV and experience poor PrEP uptake and retention. We conducted a secondary data analysis and calculated adjusted Prevalence Odds Ratios (aPORs) for PrEP retention along with 95% CIs at 90, 180, and 360 days at an organization running safety net clinics in Texas for gay and bisexual men. We found statistically significant association with age, race, in-clinic versus telehealth appointments, and having healthcare insurance. White clients had an aPOR of 1.29 [1.00, 1.67] as compared to Black clients at 90 days. Age group of 18-24 had a lower aPOR than all other age groups except 55 or older at all three time periods. Clients who met providers in person had an aPOR of 2.6 [2.14, 3.19] at 90, 2.6 [2.2, 3.30] at 180 days and 2.84 [2.27, 3.54] at 360 days. Our findings highlight the need for population-specific targeted interventions.

Lower PrEP retention for black and young MSM in TexasOur study findings suggest that of all clients who start PrEP, Black clients and younger clients had a higher chance of not continuing PrEP as compared to White clients and older clients respectively. This analysis was done for a clinic that pre-dominantly offers services to gay and bisexual men. We also found that those who were attending clinic in person had higher chances of continuing. Further those who are insured also had higher chances of continuing.

Place-based, intersectional variation in caregiving patterns and health outcomes among informal caregivers in the United States.

Introduction: Informal caregiving is a critical component of the healthcare system despite numerous impacts on informal caregivers' health and well-being. Racial and gender disparities in caregiving duties and health outcomes are well documented. Place-based factors, such as neighborhood conditions and rural-urban status, are increasingly being recognized as promoting and moderating health disparities. However, the potential for place-based factors to interact with racial and gender disparities as they relate to caregiving attributes jointly and differentially is not well established. Therefore, the primary objective of this study was to jointly assess the variability in caregiver health and aspects of the caregiving experience by race/ethnicity, sex, and rural-urban status. Methods: The study is a secondary analysis of data from the 2021 and 2022 Behavioral Risk Factor Surveillance System (BRFSS) from the Centers for Disease Control and Prevention. Multivariable logistic regression or Poisson regression models assessed differences in caregiver attributes and health measures by demographic group categorized by race/ethnicity, sex, and rural-urban status. Results: Respondents from rural counties were significantly more likely to report poor or fair health (23.2% vs. 18.5%), have obesity (41.5% vs. 37.1%), and have a higher average number of comorbidities than urban caregivers. Overall, rural Black male caregivers were 43% more likely to report poor or fair health than White male caregivers (OR 1.43, 95% CI 1.21, 1.69). Urban female caregivers across all racial groups had a significantly higher likelihood of providing care to someone with Alzheimer's disease than rural White males (p < 0.001). Additionally, there were nuanced patterns of caregiving attributes across race/ethnicity*sex*rural-urban status subgroups, particularly concerning caregiving intensity and length of caregiving. Discussion: Study findings emphasize the need to develop and implement tailored approaches to mitigate caregiver burden and address the nuanced needs of a diverse population of caregivers.

Complete genome sequence of an umbravirus from white snakeroot (Ageratina altissima).

Complete genome sequencing of a virus from a white snakeroot plant (Ageratina altissima (L.) King & H. Rob.) collected in the Great Smoky Mountains National Park, USA, revealed a quadricistronic organization resembling that of umbraviruses. ORFs 1 and 2 are putatively translated via a -1 ribosomal frameshift mechanism as a single polypeptide with a role in viral replication, whereas the 3'-proximal and extensively overlapping ORFs 3 and 4 code for proteins involved in long distance trafficing and cell-to-cell movement within the host. Sequence comparisons and phylogenetic analysis strongly suggested that this virus is a previously undescribed member of the genus Umbravirus (family Tombusviridae), for which the name "white snakeroot virus A" (WSVA) is proposed. In addition, we identified and initiated characterization of its possible helper virus, a putative new member of the genus Luteovirus.

Vanishing twins, spared cohorts, and the birthweight of periviable infants born to Black and white women in the United States.

Pregnancies ending before 26 weeks contribute 1% of births but 40% of infant deaths in the United States. The rate of these "periviable" births to non-Hispanic (NH) Black women exceeds four times that for NH whites. Small male periviable infants remain most likely to die. NH white periviable males weigh more than their NH Black counterparts. We argue that male infants born from twin gestations, in which one fetus died in utero (i.e., the vanishing twin syndrome), contribute to the disparity. We cannot directly test our argument because "vanishing" typically occurs before clinical recognition of pregnancy. We, however, describe and find associations that would emerge in vital statistics were our argument correct. Among male periviable singleton births from 288 monthly conception cohorts (January 1995 through December 2018), we found an average NH white advantage of 30 grams (759 grams versus 729 grams). Consistent with our argument, however, cohorts signaling relatively few survivors of the vanishing twin syndrome showed no disparity.

Analysis of pancreatic cancer treatment and survival disparities in Florida throughout the Covid-19 pandemic.

INTRODUCTION: Pancreatic ductal adenocarcinoma (PDAC) is currently the third-leading cause of cancer-related death in the United States. African Americans (AAs) with PDAC have worse survival in comparison to other racial groups. The COVID-19 pandemic caused significant stress to the healthcare system. We aim to evaluate the pandemic's impact on already known disparities in newly diagnosed patients with PDAC in Florida. METHODS: This is a retrospective analysis of newly diagnosed patients with PDAC in the OneFlorida+ Data Trust based upon date of diagnosis: Pre-pandemic (01/01/2017- 09/30/2019), Transition (10/01/2019-02/28/2020), and Pandemic (03/1/2020-10/31/2020). Primary endpoints are time to treatment initiation and rate of surgery and secondary endpoint is survival time. Disparities due to age, sex, race, and income were also evaluated. Chi-squared or Fisher's exact test when necessary, Kruskal-Wallis test, and Kaplan-Meier analysis with log-rank test were performed to compare the differences between the comparative groups for categorical, quantitative, and survival outcomes, respectively. Multivariable regression analyses were conducted to estimate the effects of cofactors. RESULTS: 934 patients with a median age of 67 years were included. There were 47.8% females and 52.2% males; 19.4% AA, 70.2% Caucasian, 10.4% Other race; median income was $53,551. While we observed a significant reduction in the diagnosis rate of new PDAC cases during the pandemic, there were no significant differences in demographic distributions among the three cohorts. Time to treatment did not significantly change from the pre-pandemic to the pandemic, and no difference was observed across all demographics. Rate of surgery increased significantly from the pre-pandemic (35.8%) to the pandemic (55.6%). AAs in the pre-pandemic cohort had a significantly lower rate of surgery of 25.0% compared to 41.7% in Caucasians. AAs, patients ≥ 67 years, and income < $53,000 had significantly higher hazards to death and shorter median survival time (mST). CONCLUSIONS: While no differences in time to initial treatment are observed among the newly diagnosed PDAC patients, there remain significant disparities in the rate of surgery and overall survival. Observing a significant reduction in diagnosis rate and analyzing disparities can provide insight into the effect of a resource-restricting pandemic for patients with newly diagnosed PDAC.

Racial/ethnic differences in risk of suicidal ideation and suicide attempts in a nationally representative sample of U.S. adolescents.

BACKGROUND: Suicidal ideation (SI) and suicide attempts (SA) are risk factors for suicide which peak during adolescence; however, evidence focused on differences in SI and SA risk among racial/ethnic minority youth is limited despite increasing suicide rates among several racial/ethnic minority groups. METHODS: We analyzed a representative sample of adolescents aged 12-17 with prior depressive symptoms (n = 32,617) from the cross-sectional National Surveys on Drug Use and Health (2008-2019). Survey-weighted adjusted logistic regressions estimated the association of race/ethnicity with self-reported lifetime SI and SA, controlling for sociodemographics, lifetime substance use, lifetime major depressive episode, and self-rated health. RESULTS: Compared to white adolescents, Black and Hispanic adolescents had a 2.5 % (p = 0.04) and 4.2 % (p < 0.001) lower likelihood of reporting SI. However, among participants reporting SI, Black and Hispanic adolescents had a 3.2 % (p = 0.03) and 3.1 % (p = 0.03) higher likelihood of reporting SA than white adolescents. Multiracial adolescents were 5.9 % (p = 0.03) more likely to report SA than white adolescents. LIMITATIONS: Although racial/ethnic minority groups are less likely to self-report mental health symptoms, we could only assess SI/SA among adolescents self-reporting prior depressive symptoms, and we could only assess SA among adolescents self-reporting SI due to survey methods. CONCLUSIONS: Variation in the racial/ethnic distribution of suicidality supports theories conceptualizing separate pathways for SI and SA. This underscores the need for greater attention to racial/ethnic differences in suicide-related research, surveillance, and prevention efforts, including ensuring that mental health risk assessments directly evaluate SA in addition to SI in order to better identify high-risk racial/ethnic minority youth.

Ethno-racial differences in depressive symptom endorsement: Evaluation of brief forms of the Geriatric Depression Scale in older adults.

BACKGROUND: Depression among older adults is a pressing public health concern, necessitating accurate assessment tools. The Geriatric Depression Scale (GDS) offers a brief and efficient means of screening depressive symptoms, yet its performance across ethno-racial groups remains understudied. This study aimed to compare the ability of various brief forms of the GDS to detect depressive symptoms and to assess potential ethno-racial differences in symptom endorsement among White, Black/African-American, and American Indian/Alaska Native older adults. METHODS: Data were obtained from the Wisconsin Alzheimer's Disease Research Center (ADRC) clinical cohort, comprising 555 cognitively healthy individuals at risk for dementia. We used participants' baseline data for this cross-sectional analysis. Depressive symptoms were assessed using multiple brief forms of the GDS, derived from a systematic review and meta-analysis. We examined internal consistency and correlations with global Clinical Dementia Rating (CDR) scores. We conducted Kruskal-Wallis tests and post hoc pairwise comparisons to assess ethno-racial group differences in symptom endorsement. RESULTS: Descriptive statistics revealed a predominance of female and White participants, with notable representation from Black and American Indian/Alaska Native groups. All GDS versions demonstrated moderate to high internal consistency. Significant positive correlations were observed between GDS scores and global CDR scores. Ethno-racial group differences in depressive symptom endorsement were evident, with Black participants consistently reporting higher levels of symptoms across most GDS versions. However, American Indian/Alaska Native participants endorsed significantly fewer symptoms than Black participants in one GDS version. CONCLUSION: The study highlights the importance of considering ethno-racial differences in depressive symptomatology when assessing older adults. While the GDS demonstrates overall reliability, variations in symptom endorsement across different ethno-racial groups underscore the need for culturally sensitive assessment tools and interventions. Future research should further explore these group differences and develop tailored approaches to depression screening and treatment in diverse older adult populations.

The timing and severity of clozapine-associated neutropenia in the US: Is the risk overstated?

BACKGROUND: Concern about clozapine-associated neutropenia contributes to clozapine's underutilization and racial disparities in access. People with African ancestry are more likely to have lower normative absolute neutrophil counts (ANC), associated with the Duffy null genetic polymorphism. Recent data on clozapine-associated neutropenia in the US are lacking. METHODS: Patients prescribed clozapine in the Johns Hopkins Medicine electronic medical record (EMR) between 2013 and 2023 were identified. Duffy null Associated Neutrophil Count (DANC) was assigned if there were two ANC's < 2000 cells/µL, >30 days apart, before starting clozapine. Rates of neutropenia, timing of first neutropenia, and demographic differences were explored. RESULTS: 974 received clozapine and had ANC's available, with 63.9 % male, 51.1 % White, and 39 % Black. 287 were presumed to start clozapine during the study period, and were 62.4 % male, 46 % White, and 44.9 % Black. No patients developed severe neutropenia. 59 (6.1 %) developed mild or moderate neutropenia. 19 (6.6 %) new starts had presumed DANC, and none developed neutropenia. 11 of 16 presumed new starts who developed neutropenia did so within eight months. No demographic differences were found between groups for presumed new starts. For non-new starts, where DANC assignment was not possible, Black patients were more likely than White patients to develop neutropenia (OR 3.48, 95 % CI [1.65, 7.73]). DISCUSSION: To our knowledge, this is the first observational study of clozapine-associated neutropenia in the US in the past decade, and it includes a substantial proportion of Black patients. ANC monitoring requirements may be too strict, contributing to clozapine underutilization.

Racialized environments and syringe services program implementation: County-level factors.

OBJECTIVE: Racialized health inequities in substance use-related harms might emerge from differential access to syringe service programs (SSPs). To explore this, we examined the association between county-level racialized environments, other factors, and (1) SSP presence, and (2) per capita syringe and (3) naloxone distribution. METHODS: 2021 US National Survey of SSP data (n=295/412;72 % response rate) was used to identify SSP presence and the sum of syringes and naloxone doses distributed in 2020 by county. Study measures included racial residential segregation (RRS; i.e., divergence and dissimilarity indexes for Black:Non-Hispanic White & Hispanic:Non-Hispanic White) and covariates (i.e., demographic proportions, urban/suburban/rural classifications, 2020 US presidential Republican vote share, and overdose mortality from 2019). We used logit Generalized Estimating Equations to determine factors associated with county-level SSP presence, and zero inflated negative binomial regression models to determine factors associated with per capita syringe and naloxone distribution. RESULTS: SSPs were reported in 9 % (283/3106) of US counties. SSP presence was associated with higher divergence and dissimilarity indexes, urban and suburban counties, higher opioid overdose mortality, and lower 2020 Republican presidential vote share. Per capita syringes distributed was associated with lower RRS (divergence and Hispanic:White dissimilarity), lower racially minoritized population proportions and rural counties, while per capita naloxone distribution was associated with lower Hispanic and "other" population proportions, and rural counties. CONCLUSIONS: Racialized environments are associated with SSP presence but not the scope of those programs. Preventing HIV and HCV outbreaks, and overdose deaths requires addressing community level factors that influence SSP implementation and accessibility.

Disparities and protective factors in pandemic-related mental health outcomes: a Louisiana-based study.

Introduction: The COVID-19 pandemic has had a wide-ranging impact on mental health. Diverse populations experienced the pandemic differently, highlighting pre-existing inequalities and creating new challenges in recovery. Understanding the effects across diverse populations and identifying protective factors is crucial for guiding future pandemic preparedness. The objectives of this study were to (1) describe the specific COVID-19-related impacts associated with general well-being, (2) identify protective factors associated with better mental health outcomes, and (3) assess racial disparities in pandemic impact and protective factors. Methods: A cross-sectional survey of Louisiana residents was conducted in summer 2020, yielding a sample of 986 Black and White adults. The exposure was overall pandemic impact, measured using the Epidemic-Pandemic Impacts Inventory, and the outcome was general well-being (GWB), measured with the General Well-Being Schedule. Potential protective factors included social support, resilience, and social cohesion. Linear regression models were constructed to examine the association between pandemic impact and GWB, with each protective factor added as an effect modifier. These relationships were further assessed for differences by race. Results: Pandemic stressors can be grouped into social, health, work, finance, and family-related impacts. Black persons displayed higher levels of pandemic impact as well as lower levels of social support, resilience, and social cohesion (p < 0.0001), highlighting existing racial disparities, though Black respondents and White respondents exhibited no differences in general-well being. Social support, resilience, and social cohesion were identified as protective factors for both groups (p < 0.0001, respectively), but these protective effects deteriorated as pandemic impacts increased. The addition of a pandemic impact by race interaction term was also significant in each model (p = 0.0020, p < 0.0001, and p = 0.0095, respectively) and showed that the protective effects of social support and resilience deteriorated more rapidly for Black persons than White persons, while the protective effects of social cohesion deteriorated more rapidly for White persons than Black persons. Discussion: This study emphasizes the importance of psychosocial resources in buffering the mental health impact of pandemics. It also suggests greater vulnerability for marginalized communities lacking access to crucial support systems. Findings underscore the need for targeted interventions that bolster access to social support, promote resilience, and strengthen social cohesion, particularly within minority groups. Additionally, policymakers should consider proactive measures to assist in recovery and mitigate the disproportionate impact of future crises on vulnerable populations.

Characterization of Ptau181 Among a Diverse Community-Based Cohort: A HABS-HD Study.

Background: Examination of Alzheimer's disease (AD) related biomarkers among diverse communities has remained limited. Objective: The aim of this study was to expand on prior work to provide a characterization of ptau181 among a diverse community sample. Consideration was taken regarding the impact of comorbidities on ptau181 levels including medical. Methods: 3,228 (n = 770 African American [AA], n = 1,231 Hispanic, and n = 1,227 non-Hispanic white [NHW]) Health and Aging Brain Study- Health Disparities (HABS-HD) participants were included in this study. ANCOVAs were conducted to examine differences in ptau181 levels across race and ethnic groups. Violin plots were also generated stratified by APOEɛ4 carrier status, Amyloid PET positivity status, medical comorbidity (hypertension, dyslipidemia, chronic kidney disease [CKD], and diabetes) and by cognitive diagnosis. Results: Ptau181 levels were found to differ between Hispanics and NHW after covarying for age, sex, and APOEɛ4 status. Amyloid PET positivity was associated with higher ptau181 levels across all groups. APOEɛ4 positivity status was only significantly associated with ptau181 levels among AAs. Across all race and ethnic groups, those with a diagnosis of CKD had higher levels of ptau181. When stratified by cognitive diagnosis, cognitively unimpaired Hispanics had higher ptau181 if they also had a diagnosis of CKD or diabetes. p-values ≤0.01. Conclusions: Differences in ptau181 levels were shown in a diverse community sample. Medical comorbidities had a differing effect on ptau181 levels particularly among Hispanics even without cognitive impairment. Findings support the need for future work to consider comorbid conditions when examining the utility of ptau181.