Addressing the Elephant in the Room: Perceptions and Treatment of Underrepresented in Medicine Physician Assistants/Associate Educators.

ABSTRACT: On Thursday, June 27, 2023, the US Supreme Court struck down race-conscious admission practices in higher education. While other demographic factors, such as the traditional Health Resources and Services Administration-disadvantaged background indicators, can be considered during the holistic admission process, explicit consideration based on race and/or ethnicity is prohibited. As a result, physician assistant/associate (PA) programs are tasked with developing novel ways to address equity, diversity, and inclusion during the admission and hiring processes. As Drumgold et al note, closing the PA workforce diversity gap is necessary to achieve health equity. Despite this, PA programs consistently struggle to attract and retain underrepresented in medicine (URiM) faculty, staff, and students. The latest PA Education Association Student Report indicates that more than 75% of applicants consider faculty and student body diversity when applying to programs. As such, addressing disparities in the recruitment, promotion, evaluation, and retention of URiM faculty is paramount. Here, the authors outline ongoing recruitment and retention challenges for URiM faculty along with institutional recommendations to ensure URiM PA faculty success and engagement.

Silicon nanowire-induced maturation of cardiomyocytes derived from human induced pluripotent stem cells.

The current inability to derive mature cardiomyocytes from human pluripotent stem cells has been the limiting step for transitioning this powerful technology into clinical therapies. To address this, scaffold-based tissue engineering approaches have been utilized to mimic heart development in vitro and promote maturation of cardiomyocytes derived from human pluripotent stem cells. While scaffolds can provide 3D microenvironments, current scaffolds lack the matched physical/chemical/biological properties of native extracellular environments. On the other hand, scaffold-free, 3D cardiac spheroids (i.e., spherical-shaped microtissues) prepared by seeding cardiomyocytes into agarose microwells were shown to improve cardiac functions. However, cardiomyocytes within the spheroids could not assemble in a controlled manner and led to compromised, unsynchronized contractions. Here, we show, for the first time, that incorporation of a trace amount (i.e., ∼0.004% w/v) of electrically conductive silicon nanowires (e-SiNWs) in otherwise scaffold-free cardiac spheroids can form an electrically conductive network, leading to synchronized and significantly enhanced contraction (i.e., >55% increase in average contraction amplitude), resulting in significantly more advanced cellular structural and contractile maturation.

Nanoencapsulation of stem cells within polyelectrolyte multilayer shells.

Mouse mesenchymal stem cells have been individually encased by polyelectrolyte layers of poly (L-lysine) and hyaluronic acid using the electrostatic layer-by-layer assembly technique, resulting in a shell consisting of nanolayers of thickness around 6-9 nm. Maintenance of cell morphology and viability were demonstrated for up to one week. Further adjustments to shell permeability and flexibility will facilitate the use of these encapsulated cells in tissue engineering and targeted-delivery applications.