Biomedical Engineering and Bioengineering Commons^™

Effect Of Surgical Fusion On Volitional Weight-Shifting In Individuals With Adolescent Idiopathic Scoliosis, Nikhil T. Kurapati, Joseph Krzak, Adam Graf, Sahar Hassani, Sergey Tarima, Peter F. Sturm, Kim W. Hammerberg, Purnendu Gupta, Gerald F. Harris

Biomedical Engineering Faculty Research and Publications

Study Design

Prospective.

Objectives

The goals of this study were to (1) evaluate the differences in weightbearing symmetry between individuals with adolescent idiopathic scoliosis (AIS) and typically developing controls; (2) observe the effect of posterior spinal fusion and instrumentation (PSFI) on volitional weight-shifting at 1 and 2 years postoperatively; and (3) evaluate whether lowest instrumented fusion level (ie, lowest instrumented vertebra [LIV]) in PSFI has an effect on volitional weight-shifting.

Summary of Background Data

Previous studies have conflicting findings with regard to the effect of scoliosis on postural control tasks as well as the effect of surgery. They have also …

Behavior Classification Using Multi-Site Lfp And Ecog Signals, Adam O. Hebb, Hosein M. Golshan, Sara J. Hanrahan, Joshua Nedrud, Mohammad H. Mahoor

Electrical and Computer Engineering: Graduate Student Scholarship

Abstract-Deep Brain Stimulation (DBS) is an effective therapy that alleviates the motor signs of Parkinson’s disease (PD). Existing DBS is open loop, providing a time invariant stimulation pulse train that may generate cognitive, speech, and balance side effects. A closed-loop DBS system that utilizes appropriate physiological control variables may improve therapeutic results, reduce stimulation side effects, and extend battery life of pulse generators. Furthermore, by customizing DBS to a patient’s behavioral goal, side effects of stimulation may arise only when they are non-detrimental to the patient’s current goals. Therefore, classification of human behavior using physiological signals is an …

Comparing The Tensile And Compressive Young’S Moduli Of Cortical Bone, Deshawn Hoskins, Meir Barak

The Winthrop McNair Research Bulletin

Various methods have been used in the testing of the mechanical properties of cortical bone, specifically the young’s modulus. However, in the case of the material’s Young’s modulus in compression and tension, there is a significant disagreement among the published findings that may be a result of experimental artifacts. This study attempts to solve the scientific question of whether cortical bone is stiffer in compression or tension and if so to understand why that is. Using small samples taken from the distal portion of the neck of a femur belonging to a young white tailed deer, both the Young’s moduli …

A Prototype Bioreactor Incubation System Designed To Improve Cell Response Modeling In Microgravity, Greg Duke, Ryan Longchamps, Azita Amiri

Von Braun Symposium Student Posters

No abstract provided.

Price Controls Through The Back Door: The Parallel Importation Of Pharmaceuticals, A. Bryan Baer

Georgia Journal of Law & Technology

No abstract provided.

Comparing Machine Learning And Logistic Regression Methods For Predicting Hypertension Using A Combination Of Gene Expression And Next-Generation Sequencing Data, Elizabeth Held, Joshua Cape, Nathan L. Tintle

Faculty Work Comprehensive List

Machine learning methods continue to show promise in the analysis of data from genetic association studies because of the high number of variables relative to the number of observations. However, few best practices exist for the application of these methods. We extend a recently proposed supervised machine learning approach for predicting disease risk by genotypes to be able to incorporate gene expression data and rare variants. We then apply 2 different versions of the approach (radial and linear support vector machines) to simulated data from Genetic Analysis Workshop 19 and compare performance to logistic regression. Method performance was not radically …

Robust Feedback Control Based On Low Order Models With Uncertainty Estimation For A Class Of Biomedical Problems, Hector Puebla, Miguel A. Gutierrez-Limon, Eliseo Hernandez-Martinez, Alejandra Velasco-Perez

Annual Symposium on Biomathematics and Ecology Education and Research

No abstract provided.

Surface Engineering Of Titanium Alloy To Stimulate The Bone Regeneration, Yubin Meng, Zhenduo Cui, Zhaoyang Li, Xue Li, Jin Zhao, Xubo Yuan, Xianjin Yang

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.

Aqueous Processing Of Lignocellulosic Biomass To Advanced Biofuels | Biological Engineering, Usu College Of Engineering

College of Engineering News

An important current focus of research in biology, chemistry, engineering, agriculture, and environmental sciences is the development of clean technologies that utilize cellulosic biomass as a renewable resource to the largest extent possible in a biorefinery setting to produce sustainable liquid transportation fuels and chemicals. Of all sustainable resources, only biomass can be transformed into organic fuels and chemicals that can integrate well into our current transportation infrastructure with the inherent convenience, cost, and efficiency advantages of current fuels. Cellulosic biomass can be converted to fuels and chemicals through aqueous-phase processes involving carbohydrates-derived and lignin-derived reactive intermediates deconstructed from these …

Fluorescent Materials Design At Nanoscale For Biomedical Photonics In Near Infrared Window, Kohei Soga, Masao Kamimura

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.

Recent Approaches In Designing Bioadhesive Materials Inspired By Mussel Adhesive Protein, Pegah Kord Forooshani, Bruce P. Lee

Department of Biomedical Engineering Publications

Marine mussels secret protein-based adhesives, which enable them to anchor to various surfaces in a saline, intertidal zone. Mussel foot proteins (Mfps) contain a large abundance of a unique, catecholic amino acid, Dopa, in their protein sequences. Catechol offers robust and durable adhe-sion to various substrate surfaces and contributes to the curing of the adhesive plaques. In this article, we review the unique features and the key functionalities of Mfps, catechol chemistry, and strategies for preparing catechol-functionalized poly- mers. Specifically, we reviewed recent findings on the contributions of various features of Mfps on interfacial binding, which include coacervate formation, surface …

Electro-Chemotactic Fields Induce Cooperative Movement Of Cns Cells, Shawn Mishra, Stephen Redenti, Maribel Vazquez

Publications and Research

Vision loss in adults with Age Related Macular Degeneration (AMD) is attributed to damage of retinal photoreceptor cells that initiate vision by absorbing light. Mouse models have suggested that transplantation of precursor cells may be a novel approach to restore vision. This project uses a combination of electrotactic and chemotactic stimuli to promote and guide CNS cell migration within a microdevice model.

Bd Medical Tour | Biological Engineering, Usu College Of Engineering

College of Engineering News

On October 6, 2016, 19 students, mostly from the Biological Engineering Department, traveled to Sandy, UT to tour BD Medical. Students were able to experience a medical manufacturing company first hand. They were able to see the various steps that go into the research, development, production, and quality control when producing and streamlining a product. The tour featured questions and answers about what BD Medical does, career and internship opportunities, and a walk-through of the manufacturing facility.

Automated Voxel Classification Used With Atlas-Guided Diffuse Optical Tomography For Assessment Of Functional Brain Networks In Young And Older Adults, Lin Li, Mary Cazzell, Olajide Babawale, Hanli Liu

Bioengineering Faculty Publications - Archive

No abstract provided.

Ionic Basis Of Ventricular Action Potentials, Ariel L. Escobar

Science Seminar Series

Dr. Escobar will talk about his cutting-edge approach to understanding molecular mechanisms underlying electrical activity in the heart.

Tumor Vessel Normalization After Aerobic Exercise Enhances Chemotherapeutic Efficacy., Keri L Schadler, Nicholas J Thomas, Peter Galie, Dong Ha Bhang, Kerry C Roby, Prince Addai, Jacob E Till, Kathleen Sturgeon, Alexander Zaslavsky, Christopher S Chen, Sandra Ryeom

Henry M. Rowan College of Engineering Departmental Research

Targeted therapies aimed at tumor vasculature are utilized in combination with chemotherapy to improve drug delivery and efficacy after tumor vascular normalization. Tumor vessels are highly disorganized with disrupted blood flow impeding drug delivery to cancer cells. Although pharmacologic anti-angiogenic therapy can remodel and normalize tumor vessels, there is a limited window of efficacy and these drugs are associated with severe side effects necessitating alternatives for vascular normalization. Recently, moderate aerobic exercise has been shown to induce vascular normalization in mouse models. Here, we provide a mechanistic explanation for the tumor vascular normalization induced by exercise. Shear stress, the mechanical …

Microfluidic Cantilever Detects Bacteria And Measures Their Susceptibility To Antibiotics In Small Confined Volumes, Hashem Etayash, M. F. Khan, Kamaljit Kaur, Thomas Thundat

Pharmacy Faculty Articles and Research

In the fight against drug-resistant bacteria, accurate and high-throughput detection is essential. Here, a bimaterial microcantilever with an embedded microfluidic channel with internal surfaces chemically or physically functionalized with receptors selectively captures the bacteria passing through the channel. Bacterial adsorption inside the cantilever results in changes in the resonance frequency (mass) and cantilever deflection (adsorption stress). The excitation of trapped bacteria using infrared radiation (IR) causes the cantilever to deflect in proportion to the infrared absorption of the bacteria, providing a nanomechanical infrared spectrum for selective identification. We demonstrate the in situ detection and discrimination of Listeria monocytogenes at a …

The Biotechnology Process Patent Act Of 1995: Providing Unresolved And Unrecognized Dilemmas In U.S. Patent Law, Becca Alley

Georgia Journal of Law & Technology

No abstract provided.

How Do The Social Benefits And Costs Of The Patent System Stack Up In Pharmaceuticals?, Daniel J. Gifford

Georgia Journal of Law & Technology

This paper explores the workings of the patent system in the context of the generation of new pharmaceutical products. First it identifies the relevant characteristics of the patent system and its relation to the market. The paper concedes that, in general, the patent system is probably the best way of generating new technology, in substantial part because that system uses the market to provide both incentives and rewards. The paper also identifies downsides of this patent/market system: deadweight loss and the unresponsiveness of that patent/market system to the needs of the poor. The paper then explores the social costs and …

Subcellular And In-Vivo Nano-Endoscopy, Surya Venkatasekhar Cheemalapati, John Winskas, Hao Wang, Karthik Konnaiyan, Arseny Zhdanov, Alison Roth, Swamy Rakesh Adapa, Andrew Deonarine, Rays H. Y. Jiang, Anna Pyayt

Chemical, Biological and Materials Engineering Faculty Publications

Analysis of individual cells at the subcellular level is important for understanding diseases and accelerating drug discovery. Nanoscale endoscopes allow minimally invasive probing of individual cell interiors. Several such instruments have been presented previously, but they are either too complex to fabricate or require sophisticated external detectors because of low signal collection efficiency. Here we present a nanoendoscope that can locally excite fluorescence in labelled cell organelles and collect the emitted signal for spectral analysis. Finite Difference Time Domain (FDTD) simulations have shown that with an optimized nanoendoscope taper profile, the light emission and collection was localized within ~100 nm. …