Selective plane illumination microscope dedicated to volumetric imaging in microfluidic chambers.

In this article, we are presenting an original selective plane illumination fluorescence microscope dedicated to image "Organ-on-chip"-like biostructures in microfluidic chips. In order to be able to morphologically analyze volumetric samples in development at the cellular scale inside microfluidic chambers, the setup presents a compromise between relatively large field of view (∼ 200 µm) and moderate resolution (∼ 5 µm). The microscope is based on a simple design, built around the chip and its microfluidic environment to allow 3D imaging inside the chip. In particular, the sample remains horizontally avoiding to disturb the fluidics phenomena. The experimental setup, its optical characterization and the first volumetric images are reported.

Women's Wellness Through Equity and Leadership (WEL): A Program Evaluation.

BACKGROUND AND OBJECTIVES: The Women's Wellness through Equity and Leadership (WEL) program was developed as a collaboration between 6 major medical associations in the United States. The goal was to contribute to the creation of equitable work environments for women physicians. The purpose of the current study was to evaluate the pilot implementation of WEL. METHODS: Participants included a diverse group of 18 early career to midcareer women physicians from across medical specialties, 3 from each partner organization. WEL was developed as an 18-month program with 3 series focused on wellness, equity, and leadership and included monthly virtual and in-person meetings. After institutional board review approval, a mixed-methods evaluation design was incorporated, which included postseries and postprogram surveys and in-depth telephone interviews. RESULTS: Participants delineated several drivers of program success, including peer support and/or networks; interconnectedness between the topics of wellness, equity, and leadership; and diversity of participants and faculty. Areas for improvement included more opportunities to connect with peers and share progress and more structured mentorship. Regarding program impact, participants reported increased knowledge and behavior change because of their participation. CONCLUSIONS: This longitudinal, cohort initiative resulted from a successful collaboration between 6 medical associations. Evaluation findings suggest that providing opportunities for women physicians to connect with and support each other while building knowledge and skills can be an effective way to advance wellness, equity, and leadership for women in medicine.

Improved human islets' viability and functionality with mesenchymal stem cells and arg-gly-asp tripeptides supplementation of alginate micro-encapsulated islets in vitro.

INTRODUCTION: The extension of islet transplantation to a wider number of type 1 diabetes patients is compromised by severe adverse events related to the immunosuppressant therapy required for allogenic islet transplantation. In this context, microencapsulation offers the prospects of immunosuppressive-free therapy by physically isolating islets from the immune system. However, current biomaterials need to be optimized to: improve biocompatibility, guaranty the maintenance of graft viability and functionality, and prevent fibrosis overgrowth around the capsule in vivo. Accumulating evidence suggest that mesenchymal stem cells (MSCs) and anchor points consisting of tripeptides arg-gly-asp (RGD) have cytoprotective effects on pancreatic islets. Here, we investigated the effect of supplementing reference M-rich alginate microcapsules with MSCs and RGD-G rich alginate on bioprocessing as well as on human pancreatic islets viability and functionality. METHODS: We characterized the microcapsules components, and then for the new microcapsule composite product: we analyzed the empty capsules biocompatibility and then investigated the benefits of MSCs and RGD-G rich alginate on viability and functionality on the encapsulated human pancreatic islets in vitro. We performed viability tests by confocal microscopy and glucose stimulated insulin secretion (GSIS) test in vitro to assess the functionality of naked and encapsulated islets. RESULTS: Encapsulation in reference M-rich alginate capsules induced a reduction in viability and functionality compared to naked islets. This side-effect of encapsulation was in part counteracted by the presence of MSCs but the restoration was complete with the combination of both MSCs and the RGD-G rich alginate. CONCLUSIONS: The present findings show that bioprocessing a favorable composite environment inside the M-rich alginate capsule with both MSCs and RGD-G rich alginate improves human islets survival and functionality in vitro.

New Automatized Method of 3D Multiculture Viability Analysis Based on Confocal Imagery: Application to Islets and Mesenchymal Stem Cells Co-Encapsulation.

Co-encapsulation of pancreatic islets with mesenchymal stem cells in a three-dimensional biomaterial's structure is a promising technique to improve transplantation efficacy and to decrease immunosuppressant therapy. Currently, evaluation of graft quality after co-encapsulation is only based on insulin secretion. Viability measurement in a 3D conformation structure involving two different cell types is complex, mainly performed manually, highly time consuming and examiner dependent. Standardization of encapsulated graft viability analysis before transplantation is a key point for the translation of the method from the bench side to clinical practice. In this study, we developed an automated analysis of islet viability based on confocal pictures processing of cells stained with three probes (Hoechst, propidium iodide, and PKH67). When compared with results obtained manually by different examiners, viability results show a high degree of similarity (under 3% of difference) and a tight correlation (r = 0.894; p < 0.001) between these two techniques. The automated technique offers the advantage of reducing the analysis time by 6 and avoids the examiner's dependent variability factor. Thus, we developed a new efficient tool to standardize the analysis of islet viability in 3D structure involving several cell types, which is a key element for encapsulated graft analysis in clinical practice.

The AAP Resilience in the Face of Grief and Loss Curriculum.

A career in pediatrics can bring great joy and satisfaction. It can also be challenging and lead some providers to manifest burnout and depression. A curriculum designed to help pediatric health providers acquire resilience and adaptive skills may be a key element in transforming times of anxiety and grief into rewarding professional experiences. The need for this curriculum was identified by the American Academy of Pediatrics Section on Medical Students, Residents and Fellowship Trainees. A working group of educators developed this curriculum to address the professional attitudes, knowledge, and skills essential to thrive despite the many stressors inevitable in clinical care. Fourteen modules incorporating adult learning theory were developed. The first 2 sections of the curriculum address the knowledge and skills to approach disclosure of life-altering diagnoses, and the second 2 sections focus on the provider's responses to difficult patient care experiences and their needs to develop strategies to maintain their own well-being. This curriculum addresses the intellectual and emotional characteristics patient care medical professionals need to provide high-quality, compassionate care while also addressing active and intentional ways to maintain personal wellness and resilience.