Analytical Validation and Performance of a Blood-Based P-tau217 Diagnostic Test for Alzheimer Disease.

Background: Blood-based biomarkers, especially P-tau217, have been gaining interest as diagnostic tools to measure Alzheimer disease (AD) pathology.

Methods: We developed a plasma P-tau217 chemiluminescent immunoassay using 4G10E2 and IBA493 as antibodies, a synthetic tau peptide as calibrator, and the Quanterix SP-X imager. Analytical validation performed in a College of American Pathologists-accredited CLIA laboratory involved multiple kit lots, operators, timepoints, and imagers.

Mature-Aged People in the Rural Health Workforce System: A Systems Modelling Approach.

Objective: The median age of people in rural areas is older than those living in metropolitan areas. Harnessing the potential of the mature-aged population in rural communities may present a uniquely sustainable approach to strengthening the rural health workforce system. The objective of this study was to map the rural health workforce system in Australia and identify the current and potential role of mature-aged people in the workforce system.

Outcomes of ingested superabsorbent polymers ("water beads"): A poison center study.

Background: Superabsorbent polymers (SAPs) are hydrophilic polymers that expand many-fold from their original size after contact with water. Ingestions of "water beads" by young children have been reported to cause bowel obstruction however, the incidence of bowel obstructions is unknown.

Methods: We conducted a retrospective study analyzing ingestions reported to our regional poison center from January 1, 2002 to April 25, 2023.

The emerging role of Fusobacteria in carcinogenesis.

The Fusobacterium genus comprises Gram-negative, obligate anaerobic bacteria that typically reside in the periodontium of the oral cavity, gastrointestinal tract, and female genital tract. The association of Fusobacterial spp. with colorectal tumours is widely accepted, with further evidence that this pathogen may also be implicated in the development of other malignancies.

Simulation of cell cycle effects on DNA strand break induction due to α-particles.

Purpose: Understanding cell cycle variations in radiosensitivity is important for α-particle therapies. Differences are due to both repair response mechanisms and the quantity of initial radiation-induced DNA strand breaks. Genome compaction within the nucleus has been shown to impact the yield of strand breaks.