Multimodal Blood-Based Biomarker Panel Reveals Altered Lysosomal Ionic Content in Alzheimer's Disease.

Lysosomal storage disorders (LSDs) and adult neurodegenerative disorders like Alzheimer's disease (AD) share various clinical and pathophysiological features. LSDs are characterized by impaired lysosomal activity caused by mutations in key proteins and enzymes. While lysosomal dysfunction is also linked to AD pathogenesis, its precise role in disease onset or progression remains unclear.

Impact of SARS-CoV-2 Infection on Physical Fitness in Air Force Basic Trainees.

Introduction: The impact of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection on physical fitness in previously healthy adults is not well understood. In this study, we assess the impact of SARS-CoV-2 infection on the physical fitness test (PT) scores of Air Force basic trainees.

Materials And Methods: SARS-CoV-2 testing data and trainee fitness test scores for the calendar year 2021 were obtained from U.

A signal model for fat-suppressed T-mapping and dynamic contrast-enhanced MRI with interrupted spoiled gradient-echo readout.

The conventional gradient-echo steady-state signal model is the basis of various spoiled gradient-echo (SPGR) based quantitative MRI models, including variable flip angle (VFA) MRI and dynamic contrast-enhanced MRI (DCE). However, including preparation pulses, such as fat suppression or saturation bands, disrupts the steady-state and leads to a bias in T and DCE parameter estimates. This work introduces a signal model that improves the accuracy of VFA T-mapping and DCE for interrupted spoiled gradient-echo (I-SPGR) acquisitions.