Developing Topics.

Background: Inadequate glymphatic clearance through perivascular spaces (PVS) is hypothesized to contribute to the formation of white matter hyperintensities (WMH). However, longitudinal evidence for such a mechanistic link in aging remains limited. Using multivariate modelling, we investigated the interrelationship between PVS and WMH over time to elucidate potential cascades of early cerebrovascular alterations and tested whether AD-biomarkers and inflammatory markers associated with vascular disease can explain individual variability in their occurrence and progression.

Activity Space Mapping and Pre-Exposure Prophylaxis Uptake Among Gay, Bisexual, and Other Sexual Minority Men in Small Cities and Towns in the United States.

In the US, gay, bisexual, and other sexual minoritized men (GBSMM) remain disproportionately impacted by HIV, and continue to experience unmet needs for pre-exposure prophylaxis (PrEP). A growing body of literature has underscored the need to consider the geographic factors of HIV prevention, particularly beyond administrative boundaries and towards localized spaces that influence the accessibility and utilization of health-promoting resources. Therefore, the purpose of this study is to examine the associations of driving times from activity spaces to PrEP offering facilities and individual PrEP uptake.

Blocking IL1RAP on cancer-associated fibroblasts in pancreatic ductal adenocarcinoma suppresses IL-1-induced neutrophil recruitment.

Background: Pancreatic ductal adenocarcinoma (PDAC) represents a major clinical challenge due to its tumor microenvironment, which exhibits immune-suppressive properties that facilitate cancer progression, metastasis, and therapy resistance. Interleukin 1 (IL-1) signaling has been implicated as a driver in this process. Mechanistically, both IL-1α and IL-1β bind to the IL-1 receptor type 1, forming a complex with IL-1-receptor accessory protein (IL1RAP), which triggers downstream signaling pathways.

The development of the Agricultural Producer Barriers to Care Scale (APBCS).

Purpose: The purpose of this study was to identify and test the factor structure of the Agricultural Producer Barriers to Care Scale (APBCS), which assesses barriers to engaging with health care in rural US farmers.

Methods: Respondents (n = 1045) completed an online survey that was distributed digitally and in-person by researchers and community partners at farming events and via farm-related social media. Exploratory and Confirmatory Factor Analysis were used to assess the underlying factor structure of the APBCS, and McDonald's omega coefficients were calculated to test the reliability of each factor and the instrument as a whole.

Blood-based quantification of Aβ oligomers indicates impaired clearance from brain in ApoE ε4 positive subjects.

Background: Quantification of Amyloid beta (Aβ) oligomers in plasma enables early diagnosis of Alzheimer's Disease (AD) and improves our understanding of underlying pathologies. However, quantification necessitates an extremely sensitive and selective technology because of very low Aβ oligomer concentrations and possible interference from matrix components.

Methods: In this report, we developed and validated a surface-based fluorescence distribution analysis (sFIDA) assay for quantification of Aβ oligomers in plasma.