Awareness and Collaboration Across Stakeholder Groups Important for eConsent Achieving Value-Driven Adoption.

Background: While the shift to digital technologies is pervasive across multiple industries, the informed consent process for clinical trials remains largely paper-based. Given the inefficiencies in the traditional process and the increasing complexity of clinical studies, the current approach at times may raise challenges with respect to quality, compliance, participant understanding, and trial retention. Electronic informed consent (eConsent) is an enabling clinical technology to potentially address these issues by using multimedia components to create an interactive participant experience and improve data quality.

Accelerating Adoption of Patient-Facing Technologies in Clinical Trials: A Pharmaceutical Industry Perspective on Opportunities and Challenges.

Background: Patient-facing digital technologies (also called "Patient Technology" [PT]) have the potential to serve a variety of functions in clinical trials, such as capturing clinical endpoints, engaging patients, and facilitating remote study conduct. However, these technologies are not yet accepted as mainstream research tools, and the opportunities, challenges, and facilitators associated with their implementation in clinical trials have not been fully characterized.

Methods: In order to understand the factors affecting PT adoption, the TransCelerate Patient Technology Initiative conducted a series of surveys, interviews, and focus groups with approximately 600 subject matter experts, including pharmaceutical company representatives, clinical trial investigators at a number of trial sites worldwide, and clinical trial participants.

Salicylic acid-based poly(anhydride-ester) nerve guidance conduits: Impact of localized drug release on nerve regeneration.

Nerve guidance conduits (NGCs) can serve as physical scaffolds aligning and supporting regenerating cells while preventing scar tissue formation that often interferes with the regeneration process. Numerous studies have focused on functionalizing NGCs with neurotrophic factors, for example, to support nerve regeneration over longer gaps, but few directly incorporate therapeutic agents. Herein, we fabricated NGCs from a polyanhydride comprised of salicylic acid (SA), a nonsteroidal anti-inflammatory drug, then performed in vitro and in vivo assays.

The effect of glycomimetic functionalized collagen on peripheral nerve repair.

Increasing evidence suggests that the improper synaptic reconnection of regenerating axons is a significant cause of incomplete functional recovery following peripheral nerve injury. In this study, we evaluate the use of collagen hydrogels functionalized with two peptide glycomimetics of naturally occurring carbohydrates-polysialic acid (PSA) and human natural killer cell epitope epitope (HNK-1)-that have been independently shown to encourage nerve regeneration and axonal targeting. Our novel biomaterial was used to bridge a critical gap size (5 mm) in a mouse femoral nerve injury model.

Neural cell type-specific responses to glycomimetic functionalized collagen.

Despite their noted functional role, glycans have had limited therapeutic use due to difficulties in synthesis and quick degradation in vivo. The recent discovery of glycomimetics has provided new opportunities for their application. In this study, we have functionalized type I collagen with peptide mimics of two glycans: (1) polysialic acid (PSA) and (2) an epitope first discovered on human natural killer cells (HNK-1).

Nanoporous membrane-sealed microfluidic devices for improved cell viability.

Cell-laden microfluidic devices have broad potential in various biomedical applications, including tissue engineering and drug discovery. However, multiple difficulties encountered while culturing cells within devices affecting cell viability, proliferation, and behavior has complicated their use. While active perfusion systems have been used to overcome the diffusive limitations associated with nutrient delivery into microchannels to support longer culture times, these systems can result in non-uniform oxygen and nutrient delivery and subject cells to shear stresses, which can affect cell behavior.

Microfluidic generation of haptotactic gradients through 3D collagen gels for enhanced neurite growth.

We adapted a microfluidic system used previously to generate durotactic gradients of stiffness in a 3D collagen gel, to produce haptotactic gradients of adhesive ligands through the collagen gel. Oligopeptide sequences that included bioactive peptide sequences from laminin, YIGSR, or IKVAV, were grafted separately onto type I collagen using 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide (EDC). Solutions of peptide-grafted collagen and untreated collagen were then used as source and sink input solutions, respectively, in an H-shaped microfluidic network fabricated using traditional soft lithography.