Medical Biotechnology Commons^™

Euadb: A Resource For Covid-19 Test Development And Comparison, Alyssa Woronik, Henry W. Shaffer, Karin Kiontke, Jon M. Laurent, Ronald Zambrano, Mariah Daley, Jef D. Boeke, David H. Fitch

Biology Faculty Publications

Due to the sheer number of COVID-19 (coronavirus disease 2019) cases there is a need for increased world-wide SARS-CoV-2 testing capability that is both efficient and effective. Having open and easy access to detailed information about these tests, their sensitivity, the types of samples they use, etc. would be highly useful to ensure their reproducibility, to help clients compare and decide which tests would be best suited for their applications, and to avoid costs of reinventing similar or identical tests. Additionally, this resource would provide a means of comparing the many innovative diagnostic tools that are currently being developed in …

Iatrogenic Electrocautery Damage And Cellular-Based Corrosion Of Total Joint Arthroplasty Biomaterials, Kirsten Carol Miller

Theses and Dissertations (ETD)

Introduction. The number of patients undergoing a Primary Total Knee Arthroplasty (PTKA) has been increasing steadily each year. Of those PTKA patients, 20% report long-term pain and/or some functional deficit. Cobalt-Chromium-Molybdenum (CoCrMo) alloy is one of the most used materials in Total Joint Arthroplasty (TJA) implants due the material’s high strength, high corrosion resistance, and biocompatibility. The release of metal ions and potential occurrence of metallosis in TJA has been shown to be detrimental to the longevity of the implant. The mechanisms leading to this increase in metal ion concentrations have been up for debate, with some believing it is …

Near-Field Electrospinning And Characterization Of Biodegradable Small Diameter Vascular Grafts, William E. King Iii

Theses and Dissertations (ETD)

The ideal “off the shelf” tissue engineering, small-diameter (< 6 mm inner diameter (ID)) vascular graft hinges on designing a template that facilitates transmural ingrowth of capillaries to regenerate an endothelized neointimal surface. Previous traditionally electrospun (TES) approaches to create bioresorbable vascular grafts lack the pore sizes required to facilitate transmural capillary ingrowth required for successful in situ neovascular regeneration. Therefore, the ability to create scaffolds with program-specific architectures independent of fiber diameter via the relatively recent sub-technique of near-field electrospinning (NFES) represents a promising solution to create tissue engineering vascular grafts. These programmed large pore sizes are anticipated to promote in situ regeneration and improve the outcomes as well as the quality of life of patients with arterial disease.

In this dissertation, we manufactured via NFES as well as characterized biodegradable polydioxanone (PDO) small-diameter vascular grafts. Chapter 1 introduces the need for off-the-shelf, small-diameter vascular grafts to facilitate in situ regeneration, the process and pore size limitations of TES vascular grafts, and the promising use of NFES to develop precisely tailored PDO vascular grafts. Chapter 2 describes the process of NFES and details the current progress in NFES of biomedical polymers as well as the major limitations that exist in the field. Chapters 3, 4, and 5 contain primary research …

Novel Technology Enables Diagnostic Ultrasound Machine To Treat Hepatocellular Carcinoma In Mice, Ryan Morrison, Mrigendra B. Karmacharya, Chandra M. Sehgal

Rowan-Virtua Research Day

An off-the-shelf diagnostic transducer (ULTRASONIX C5-2) was modified with custom-built circuitry to enable the transducer to produce therapeutic ultrasound in order to ablate hepatocellular carcinomas grown in immunodeficient athymic nude mice (25-35 g; Charles River Laboratories, Wilmington, MA, USA). The therapeutic antivascular ultrasound (AVUS) produced by the off-the-shelf abdominal transducer was unfocused, continuous 2.8MHz ultrasound targeting contrast-enhancing perflutren lipid microbubbles within tumor vasculature. Previous research with a dedicated physiotherapy ultrasound machine (D150 Plus, Dynatronics Corp., Salt Lake City, UT, USA) targeting similar hepatocellular carcinomas showed disrupted tumor neovasculature and irreparable dilation of tumor capillaries with subsequent intercellular edema and hemorrhage.1-3 …