Publications by authors named "G Allan Samuelson"

The standard of care for patients with Alport syndrome (AS) is angiotensin-converting enzyme (ACE) inhibitors. In autosomal recessive Alport (ARAS) mice, ACE inhibitors double lifespan. We previously showed that deletion of Itga1 in Alport mice [double-knockout (DKO) mice] increased lifespan by 50%.

View Article and Find Full Text PDF
Article Synopsis
  • Alport syndrome (AS) is a genetic disorder that causes kidney disease and potentially hearing loss, typically treated with renin-angiotensin system inhibitors, but newer treatments are needed.
  • Sparsentan, a dual receptor antagonist, demonstrated effectiveness in a mouse model for AS by reducing kidney and hearing-related issues, showing improvements in kidney function and lifespan compared to traditional treatments like losartan.
  • The study suggests that sparsentan could be a promising therapy for patients with Alport syndrome, addressing both kidney damage and hearing loss, even when treatment starts after kidney issues have developed.
View Article and Find Full Text PDF

Objectives: Telesimulation, in which learners and evaluators use technology to connect remotely to simulation-based learning activities, is effective for skills and decision-making review. Historical models in which learners are colocated with the simulation equipment have inherent issues, especially for emergency medical services (EMS) providers. This feasibility study placed the evaluators in the simulation center, whereas the learners were at a distance steering the scenario evolution through telehealth technologies.

View Article and Find Full Text PDF

In Alport mice, activation of the endothelin A receptor (ET R) in mesangial cells results in sub-endothelial invasion of glomerular capillaries by mesangial filopodia. Filopodia deposit mesangial matrix in the glomerular basement membrane (GBM), including laminin 211 which activates NF-κB, resulting in induction of inflammatory cytokines. Herein we show that collagen α1(III) is also deposited in the GBM.

View Article and Find Full Text PDF
Article Synopsis
  • * A study comparing the stria vascularis of wild-type and Alport mice using RNA sequencing found 68 genes upregulated and 61 downregulated in Alport mice, revealing an inflammatory state and disrupted metabolic pathways.
  • * Findings suggest Alport mice experience metabolic stress that contributes to their hearing loss vulnerability, and this research may inform future therapeutic strategies for similar human conditions.
View Article and Find Full Text PDF