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Full-Text Articles in Other Analytical, Diagnostic and Therapeutic Techniques and Equipment

Ctl+Heal: A Scoping Review On Therapeutic Alliance And Technology, Vineet Sadarangani Feb 2024

Ctl+Heal: A Scoping Review On Therapeutic Alliance And Technology, Vineet Sadarangani

Annual Research Symposium

A strong therapeutic alliance between a healthcare provider and patient is built upon a strong bond, trust, and open communication, all essential for successful healthcare outcomes. Establishing a robust therapeutic alliance relies significantly on non-verbal behaviors, including tone, facial expression, and eye contact. Traditionally, expert feedback was essential for addressing undesirable non-verbal behaviors and cultivating desirable ones; however, technological advancements have introduced the concept of technology-assisted feedback. This would eliminate the immediate need for experts, thus allowing the clinician more time to focus on their clinical skills; however, these methods are scattered across various fields of medical education, technology and …


Using Digital Assessment Technology To Detect Neuropsychological Problems In Primary Care Settings, David J Libon, Emily Frances Matusz, Stephanie Cosentino, Catherine C Price, Rod Swenson, Meagan Vermeulen, Terrie Beth Ginsberg, Adaora Obiageli Okoli-Umeweni, Leonard Powell, Robert Nagele, Sean Tobyne, Joyce Rios Gomes-Osman, Alvaro Pascual-Leone Nov 2023

Using Digital Assessment Technology To Detect Neuropsychological Problems In Primary Care Settings, David J Libon, Emily Frances Matusz, Stephanie Cosentino, Catherine C Price, Rod Swenson, Meagan Vermeulen, Terrie Beth Ginsberg, Adaora Obiageli Okoli-Umeweni, Leonard Powell, Robert Nagele, Sean Tobyne, Joyce Rios Gomes-Osman, Alvaro Pascual-Leone

Rowan-Virtua School of Osteopathic Medicine Faculty Scholarship

INTRODUCTION: Screening for neurocognitive impairment and psychological distress in ambulatory primary and specialty care medical settings is an increasing necessity. The Core Cognitive Evaluation™ (CCE) is administered/scored using an iPad, requires approximately 8 min, assesses 3- word free recall and clock drawing to command and copy, asks questions about lifestyle and health, and queries for psychological distress. This information is linked with patients' self- reported concerns about memory and their cardiovascular risks.

METHODS: A total of 199 ambulatory patients were screened with the CCE as part of their routine medical care. The CCE provides several summary indices, and scores on …


Patient And Provider Experience With Artificial Intelligence Screening Technology For Diabetic Retinopathy In A Rural Primary Care Setting, Brian M. Nolan, Emma R. Daybranch, Kerri Barton, Neil Korsen Apr 2023

Patient And Provider Experience With Artificial Intelligence Screening Technology For Diabetic Retinopathy In A Rural Primary Care Setting, Brian M. Nolan, Emma R. Daybranch, Kerri Barton, Neil Korsen

Journal of Maine Medical Center

Introduction: The development of autonomous artificial intelligence for interpreting diabetic retinopathy (DR) images has allowed for point-of-care testing in the primary care setting. This study describes patient and provider experiences and perceptions of the artificial intelligence DR screening technology called EyeArt by EyeNuk during implementation of the tool at Western Maine Primary Care in Norway, Maine.

Methods: This non-randomized, single-center, prospective observational study surveyed 102 patients and 13 primary care providers on their experience of the new screening intervention.

Results: All surveyed providers agreed that the new screening tool would improve access and annual screening rates. Some providers also identified …


Performance Of A Sars-Cov-2 Rt-Pcr Assay With Non-Traditional Specimen Types, Subathra Marimuthu, Holly Aliesky, Heather Ness, Daniya Sheikh, Sathya Rashmit, Dawn Balcom, Leslie A. Wolf Feb 2023

Performance Of A Sars-Cov-2 Rt-Pcr Assay With Non-Traditional Specimen Types, Subathra Marimuthu, Holly Aliesky, Heather Ness, Daniya Sheikh, Sathya Rashmit, Dawn Balcom, Leslie A. Wolf

The University of Louisville Journal of Respiratory Infections

During the first two years of the coronavirus disease 2019 (COVID-19) pandemic, nasopharyngeal (NP) specimens were the gold standard for clinical diagnostic testing. As information about the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) causing the pandemic continued to be shared, it was clear that the virus could be detected in other specimen types during an active infection. The University of Louisville Infectious Diseases Laboratory accepted non-traditional specimen types, most without a paired, positive NP result, for research purposes only to support local epidemiology efforts. A real-time reverse transcription-polymerase chain reaction (RT-PCR) assay originally validated for NP specimens was used …


Optimization In Mri Experiment Design And Image Reconstruction, Mark Armstrong Jan 2023

Optimization In Mri Experiment Design And Image Reconstruction, Mark Armstrong

Electronic Theses and Dissertations

Magnetic Resonance Imaging (MRI) is a non-invasive imaging modality with numerous applications due to its flexible contrast and high resolution. Recent improvements in computation power have enabled optimizations which were previously out of reach. This has led to improvements in image reconstruction and experiment design.

Compressed sensing (CS) allows for images to be reconstructed using less data than is normally required leading to faster image acquisitions. In this thesis, CS is applied to experiments tracking individual cells in time lapse MRI. The faster image acquisition with CS reduces blurring from cell motion, improving the Contrast-to-Noise ratio (CNR) of moving cells …


Increasing Continuous Positive Airway Pressure Compliance With Various Telemedicine Interventions: An Integrated Literature Review, Tracy Partington Dec 2021

Increasing Continuous Positive Airway Pressure Compliance With Various Telemedicine Interventions: An Integrated Literature Review, Tracy Partington

Doctor of Nursing Practice (DNP) Projects

Aims and Objectives. This literature review's objective was to synthesize evidence from previously published literature on telemedicine interventions' effectiveness on CPAP (Continuous Positive Airway Pressure) therapy compliance.

Background. It is estimated that 22 million Americans suffer from a form of Sleep Apnea (SA), and those up to 80 percent of the cases of moderate to severe Obstructive Sleep Apnea (OSA) are undiagnosed (Sleep Apnea, n,d). The first-line therapy for OSA is CPAP. However, CPAP therapy is associated with low compliance rates.

Design. Systematic review.

Method. A multi-database literature search was conducted to identify published literature between 2009 and 2020. …


Self-Measured Blood Pressure Monitoring: A Patient Empowerment Project, Alison Cusmano Dec 2021

Self-Measured Blood Pressure Monitoring: A Patient Empowerment Project, Alison Cusmano

Doctor of Nursing Practice Final Manuscripts

Hypertension is a public health issue estimated to affect 112 million adults by 2030. Primary care patients in an outpatient clinic in Southern California with elevated blood pressure readings in the office did not have an organized system for close follow-up. The purpose of this evidence-based project (EBP) was to educate patients on self-measured blood pressure monitoring (SMBP), Dietary Approaches to Stop Hypertension (DASH), diet interventions, and healthy weight loss to improve hypertension rates. Through these interventions, patients developed an understanding of their systolic and diastolic blood pressure goals. Nurse practitioners, medical assistants, and licensed vocational nurses screened for high …


Mobile Phone Sensors Can Discern Medication-Related Gait Quality Changes In Parkinson's Patients In The Home Environment, Albert Pierce, Niklas König Ignasiak, Wilford K. Eiteman-Pang, Cyril Rakovski, Vincent Berardi Sep 2021

Mobile Phone Sensors Can Discern Medication-Related Gait Quality Changes In Parkinson's Patients In The Home Environment, Albert Pierce, Niklas König Ignasiak, Wilford K. Eiteman-Pang, Cyril Rakovski, Vincent Berardi

Psychology Faculty Articles and Research

Patients with Parkinson's Disease (PD) experience daytime symptom fluctuations, which result in small amplitude, slow and unstable walking during times when medication attenuates. The ability to identify dysfunctional gait patterns throughout the day from raw mobile phone acceleration and gyroscope signals would allow the development of applications to provide real-time interventions to facilitate walking performance by, for example, providing external rhythmic cues. Patients (n = 20, mean Hoehn and Yahr: 2.25) had their ambulatory data recorded and were directly observed twice during one day: once after medication abstention, (OFF) and once approximately 30 min after intake of their medication …


J Mich Dent Assoc May 2021 May 2021

J Mich Dent Assoc May 2021

The Journal of the Michigan Dental Association

Every month, The Journal of the Michigan Dental Association brings news, information, and features about Michigan dentistry to our state's oral health community and the MDA's 6,200+ members. No publication reaches more Michigan dentists!

In this issue, the reader will find the following original content:

  • A cover story “3D Printing in Dentistry: Concepts, Technologies, and Applications”.
  • An interview with new MDA President Dr. Mike Maihofer.
  • The MDA award-winners for 2021.
  • A feature article, “Things to Know about the New e-Prescribing Law”.
  • News you need, Editorial and regular department articles on MDA Foundation activities, Dentistry and the Law, Staff Matters, and …


There's An App For That: Promoting Health App Use In Rural Ireland, Noor Yahya, Marcus Simon Mar 2021

There's An App For That: Promoting Health App Use In Rural Ireland, Noor Yahya, Marcus Simon

Undergraduate Research Symposium

Problem Statement: Smartphones and mobile applications (commonly referred to as apps) were first introduced in the late 20th century and early 21st century. Due to the public’s time constraints, lack of transportation, lack of medical insurance, and a growing desire for healthier lifestyles, the total global mHealth market forecast to reach 100 billion dollars in 2021 – a fivefold increase from 21 billion in 2016. mHealth apps have been successfully used for health promotion activities but barriers such as lack of knowledge and comfort in using health apps exist.

Purpose: Evaluate readiness of a rural community and the …


Voice Analysis With Iphones: A Low Cost Experimental Solution, Benjamin Van Der Woerd Dec 2019

Voice Analysis With Iphones: A Low Cost Experimental Solution, Benjamin Van Der Woerd

Electronic Thesis and Dissertation Repository

Background:

Acoustic voice analysis requires a resource intensive setup, including a soundproof booth. This project evaluates smartphone microphone and recording environment impacts on voice sample collection for acoustic voice analysis. A proprietary analysis algorithm is presented for validation.

Methods:

Microphone and recording environment were evaluated using previously collected voice samples presented in four conditions to test two microphones and two recording environments. Prospective samples were used to test the proprietary algorithm, whereby samples were analyzed using this and Praat.

Results:

Microphone and recording environment had small, clinically unimportant impacts on most measurements. The proprietary algorithm reliably analyzed sustained vowels, with …


Wavelet-Based Analysis Of Physical Activity And Sleep Movement Data From Wearable Sensors Among Obese Adults, Rahul Soangra, Vennila Krishnan Aug 2019

Wavelet-Based Analysis Of Physical Activity And Sleep Movement Data From Wearable Sensors Among Obese Adults, Rahul Soangra, Vennila Krishnan

Physical Therapy Faculty Articles and Research

Decreased physical activity in obese individuals is associated with a prevalence of cardiovascular and metabolic disorders. Physicians usually recommend that obese individuals change their lifestyle, specifically changes in diet, exercise, and other physical activities for obesity management. Therefore, understanding physical activity and sleep behavior is an essential aspect of obesity management. With innovations in mobile and electronic health care technologies, wearable inertial sensors have been used extensively over the past decade for monitoring human activities. Despite significant progress with the wearable inertial sensing technology, there is a knowledge gap among researchers regarding how to analyze longitudinal multi-day inertial sensor data …


The Chapman Bone Algorithm: A Diagnostic Alternative For The Evaluation Of Osteoporosis, Elise Levesque, Anton Ketterer, Wajiha Memon, Cameron James, Noah Barrett, Cyril Rakovski, Frank Frisch Sep 2018

The Chapman Bone Algorithm: A Diagnostic Alternative For The Evaluation Of Osteoporosis, Elise Levesque, Anton Ketterer, Wajiha Memon, Cameron James, Noah Barrett, Cyril Rakovski, Frank Frisch

Mathematics, Physics, and Computer Science Faculty Articles and Research

Osteoporosis is the most common metabolic bone disease and goes largely undiagnosed throughout the world, due to the inaccessibility of DXA machines. Multivariate analyses of serum bone turnover markers were evaluated in 226 Orange County, California, residents with the intent to determine if serum osteocalcin and serum pyridinoline cross-links could be used to detect the onset of osteoporosis as effectively as a DXA scan. Descriptive analyses of the demographic and lab characteristics of the participants were performed through frequency, means and standard deviation estimations. We implemented logistic regression modeling to find the best classification algorithm for osteoporosis. All calculations and …


Efficacy Of Smart Infusion Pumps From A Nursing Perspective, Kassi B. Zaborowski Jul 2018

Efficacy Of Smart Infusion Pumps From A Nursing Perspective, Kassi B. Zaborowski

Applied Research Projects

In today’s healthcare, intravenous (IV) therapy-related errors have become rampant and are responsible for a substantial portion of hospital injuries and deaths. In the last decade, however, since the development and implementation of “smart” IV pumps, a significant number of these IV medication errors have allegedly been reduced. The purpose of this paper is to discuss research surrounding an evaluation of the efficacy of smart IV pumps from a nursing perspective.


Validity And Reliability Of The Ymca Submaximal Cycle Test Using An Electrically Braked Ergometer, Justin Kidd May 2018

Validity And Reliability Of The Ymca Submaximal Cycle Test Using An Electrically Braked Ergometer, Justin Kidd

Senior Honors Projects, 2010-2019

Purpose: To test the effect of using an electrically braked ergometer on the validity and reliability of the YMCA submaximal cycle test.

Methods: 22 male and 13 female subjects ages 19 to 31 completed one maximal treadmill test and four submaximal cycle tests to measure and estimate VO2max, respectively. The maximal tests involved recording heart rate and VO2 during graded exercise until volitional fatigue; an actual max was verified when two out of the following criteria: respiratory Exchange Ratio > 1.1, VO2 plateau (< 150 ml/min increase in VO2 during final stage), and achievement of 90% age-predicted HR max (or completed …


Policy Of Current Hospital Translation Services And Recommendations For Future Adjustments For Spanish-Speaking Patients, Isidora Rose Beach May 2018

Policy Of Current Hospital Translation Services And Recommendations For Future Adjustments For Spanish-Speaking Patients, Isidora Rose Beach

Chancellor’s Honors Program Projects

No abstract provided.


Resource Review: 5minuteconsult, Ivan Armando Portillo Apr 2018

Resource Review: 5minuteconsult, Ivan Armando Portillo

Library Articles and Research

A product review of 5MinuteConsult, an online resource from WoltersKluwer "designed to help health care professionals and clinical students by providing information that is needed at the point-of-care".


Changing Diagnostic Methods And Increased Detection Of Verotoxigenic Escherichia Coli, Ireland, Thomas Rice, Noreen Quinn, Roy D. Sleator, Brigid Lucey Sep 2016

Changing Diagnostic Methods And Increased Detection Of Verotoxigenic Escherichia Coli, Ireland, Thomas Rice, Noreen Quinn, Roy D. Sleator, Brigid Lucey

Department of Biological Sciences Publications

The recent paradigm shift in infectious disease diagnosis from culture-based to molecular-based approaches is exemplified in the findings of a national study assessing the detection of verotoxigenic Escherichia coli infections in Ireland. The methodologic changes have been accompanied by a dramatic increase in detections of non-O157 verotoxigenic E. coli serotypes.


"What's App?" Utilizing Evidence Based Medicine Apps In The Clinical Setting, Kathryn C. O'Donovan May 2016

"What's App?" Utilizing Evidence Based Medicine Apps In The Clinical Setting, Kathryn C. O'Donovan

BU Well

The medical community has utilized evidence-based medicine, or EBM, in practice for decades, and healthcare personnel are used to the idea of utilizing research and statistics to determine the treatment of patients. However, as technology advances, the use of electronics and EBM apps has increased in the clinical setting. While there are advantages to clinicians having resources at their fingertips as they talk with patients, there are also hurdles that could harm or offend patients. So as healthcare inevitably becomes more and more electronic, can providers strike the balance needed to effectively use EBM apps in practice to provide optimum …


The Mind-Body Connection: The Association Between Adolescent Locus Of Control And Indicators Of Physical Health, C. Brahler, James Cropper Dec 2015

The Mind-Body Connection: The Association Between Adolescent Locus Of Control And Indicators Of Physical Health, C. Brahler, James Cropper

C. Jayne Brahler

Locus of control (LOC) describes an individual’s generalized beliefs or expectancies that their reinforcements are under internal versus external control (1). An individual exhibits either an internal or external LOC. This study examines the link between LOC and selected health risk factors in adolescents. A convenience sample of 167 high school physical education students completed a 13-item LOC questionnaire based on Rotter’s 1966 instrument. Various anthropometric measurements, blood pressure, body mass index (BMI), and body fat were recorded on all subjects. A subsample of 61 female students received blood chemistry analysis that included a lipid profile, hemoglobin A1c (HbA1c), Apo …


A New Method For Shear Wave Speed Estimation In Shear Wave Elastography, Aaron J. Engel, Gregory R. Bashford Dec 2015

A New Method For Shear Wave Speed Estimation In Shear Wave Elastography, Aaron J. Engel, Gregory R. Bashford

Biomedical Imaging and Biosignal Analysis Laboratory

Visualization of mechanical properties of tissue can aid in noninvasive pathology diagnosis. Shear wave elastography (SWE) measures the elastic properties of soft tissues by estimation of local shear wave propagation speed. In this paper, a new robust method for estimation of shear wave speed is introduced which has the potential for simplifying continuous filtering and real-time elasticity processing. Shear waves were generated by external mechanical excitation and imaged at a high frame rate. Three homogeneous phantoms of varying elastic moduli and one inclusion phantom were imaged. Waves propagating in separate directions were filtered and shear wave speed was estimated by …


Enabling Real-Time Ultrasound Imaging Of Soft Tissue Mechanical Properties By Simplification Of The Shear Wave Motion Equation, Aaron J. Engel, Gregory R. Bashford Jan 2015

Enabling Real-Time Ultrasound Imaging Of Soft Tissue Mechanical Properties By Simplification Of The Shear Wave Motion Equation, Aaron J. Engel, Gregory R. Bashford

Biomedical Imaging and Biosignal Analysis Laboratory

Ultrasound based shear wave elastography (SWE) is a technique used for non-invasive characterization and imaging of soft tissue mechanical properties. Robust estimation of shear wave propagation speed is essential for imaging of soft tissue mechanical properties. In this study we propose to estimate shear wave speed by inversion of the firstorder wave equation following directional filtering. This approach relies on estimation of first-order derivatives which allows for accurate estimations using smaller smoothing filters than when estimating second-order derivatives. The performance was compared to three current methods used to estimate shear wave propagation speed: direct inversion of the wave equation (DIWE), …


Functional Transcranial Doppler Ultrasound For High Temporal Resolution Measurement Of Lateralization In Visual Memory And Visual Search Cognitive Tasks, B. Hage, M. Alwatban, E. Barney, M. Mills, M. Dodd, E. Truemper, Gregory R. Bashford Jan 2015

Functional Transcranial Doppler Ultrasound For High Temporal Resolution Measurement Of Lateralization In Visual Memory And Visual Search Cognitive Tasks, B. Hage, M. Alwatban, E. Barney, M. Mills, M. Dodd, E. Truemper, Gregory R. Bashford

Biomedical Imaging and Biosignal Analysis Laboratory

Functional transcranial Doppler ultrasound (fTCD) is a noninvasive sensing modality that measures blood flow velocities in cerebral arteries (CBFV) with high temporal resolution. Few studies have examined the relationship of CBFV change during visual search and visual memory cognitive tasks. Here a protocol to compare lateralization between these two similar tasks using fTCD is demonstrated. Thirteen healthy volunteers were shown visual scenes on a computer and performed visual search and visual memory tasks while CBFV in the bilateral middle cerebral arteries was monitored with fTCD. Each subject completed 40 trials, consisting of baseline, calibration, instruction, and task periods. Lateralization was …


Comparison Of Body Composition Measures In Older Adult Males, Cody Smith Jan 2014

Comparison Of Body Composition Measures In Older Adult Males, Cody Smith

Honors Projects

Body Mass Index (BMI) is a measure created to assess population wide staistics of obesity and stratify health risk. However, there are large differences in health risk when comparing BMI with measures of body composition. BMI is not a measure of body composition. Body composition measures are used to distinguish between fat mass, fat-free mass. This percent body fat is more significantly correlated with health risk.

This study analyzed various body composition methodologies including waist circumference at the umbilicus and at the narrowest point of the abdomen, sagittal abdominal diameter, bioelectrical impedance analysis, and air displacement plethysmography. The study’s purpose …


Flowcell Systems For Single Molecule Detection, John G. K. Williams, Gregory R. Bashford, Jiyan Chen, Dan Draney, Nara Narayanan, Bambi L. Reynolds, Pamela Sheaff Apr 2012

Flowcell Systems For Single Molecule Detection, John G. K. Williams, Gregory R. Bashford, Jiyan Chen, Dan Draney, Nara Narayanan, Bambi L. Reynolds, Pamela Sheaff

Biomedical Imaging and Biosignal Analysis Laboratory

The present invention provides compounds, methods and systems for sequencing nucleic acid using single molecule detection. Using labeled NPs that exhibit charge-switching behavior, single-molecule DNA sequencing in a microchannel sorting system is realized. In operation, sequencing products are detected enabling real-time sequencing as successive detectable moieties flow through a detection channel. By electrically sorting charged molecules, the cleaved product molecules are detected in isolation without interference from unincorporated NPs and without illuminating the polymerase-DNA complex.


Two-Dimensional Blood Flow Velocity Estimation Using Apparent Speckle Pattern Angle Dependence On Scan Velocity, Tiantian Xu, Gregory R. Bashford Jan 2012

Two-Dimensional Blood Flow Velocity Estimation Using Apparent Speckle Pattern Angle Dependence On Scan Velocity, Tiantian Xu, Gregory R. Bashford

Biomedical Imaging and Biosignal Analysis Laboratory

An algorithm which measures the lateral component of blood flow velocity was developed in our previous studies based on the increase in speckle size due to relative motion between moving scatterers and spatial rate of scanner A-line acquisition (scan velocity). In this paper, the apparent dominant angle of the speckle pattern in a straight vessel was investigated and a new method of two-dimensional blood flow velocity estimation is introduced. Different scan velocities were used for data acquisition from blood flow traveling at an angle relative to the ultrasound beam. The apparent angle of the speckle pattern changes with different scan …


Monitoring Cerebral Hemodynamics With Transcranial Doppler Ultrasound During Cognitive And Exercise Testing In Adults Following Unilateral Stroke, Brian P. Watt, Judith M. Burnfield, Edward J. Truemper, Thad W. Buster, Gregory R. Bashford Jan 2012

Monitoring Cerebral Hemodynamics With Transcranial Doppler Ultrasound During Cognitive And Exercise Testing In Adults Following Unilateral Stroke, Brian P. Watt, Judith M. Burnfield, Edward J. Truemper, Thad W. Buster, Gregory R. Bashford

Biomedical Imaging and Biosignal Analysis Laboratory

An observational study was performed as a preliminary investigation into the use of transcranial Doppler ultrasound (TCD) for recording cerebral hemodynamic changes during multiple tasks. TCD is a method of measuring cerebral blood flow (CBF) using ultrasound transducers in contact with the surface of the head. Using the maximum flow envelope of the Doppler spectrum returning from the middle cerebral artery (MCA), standard clinical flow indices can be calculated and displayed in real time providing information concerning perturbations in CBF and their potential cause. These indices as well as flow velocity measurements have been recognized as useful in measuring changes …


Lateral Blood Flow Velocity Estimation Based On Ultrasound Speckle Size Change With Scan Velocity, Tiantian Xu, Gregory R. Bashford Dec 2010

Lateral Blood Flow Velocity Estimation Based On Ultrasound Speckle Size Change With Scan Velocity, Tiantian Xu, Gregory R. Bashford

Biomedical Imaging and Biosignal Analysis Laboratory

Conventional (Doppler-based) blood flow velocity measurement methods using ultrasound are capable of resolving the axial component (i.e., that aligned with the ultrasound propagation direction) of the blood flow velocity vector. However, these methods are incapable of detecting blood flow in the direction normal to the ultrasound beam. In addition, these methods require repeated pulse-echo interrogation at the same spatial location. A new method has been introduced which estimates the lateral component of blood flow within a single image frame using the observation that the speckle pattern corresponding to blood reflectors (typically red blood cells) stretches (i.e., is smeared) if the …


Charge Switch Nucleotides, John G. K. Williams, Gregory R. Bashford, Jiyan Chen, Dan Draney, Nara Narayanan, Bambi L. Reynolds, Pamela Sheaff Feb 2010

Charge Switch Nucleotides, John G. K. Williams, Gregory R. Bashford, Jiyan Chen, Dan Draney, Nara Narayanan, Bambi L. Reynolds, Pamela Sheaff

Biomedical Imaging and Biosignal Analysis Laboratory

The present invention provides compounds, methods and systems for sequencing nucleic acid using single molecule detection. Using labeled NPs that exhibit charge-switching behavior, single-molecule DNA sequencing in a microchannel sorting system is realized. In operation, sequencing products are detected enabling real-time sequencing as successive detectable moieties flow through a detection channel. By electrically sorting charged molecules, the cleaved product molecules are detected in isolation Without interference from unincorporated NPs and Without illuminating the polymerase-DNA complex.


Charge Switch Nucleotides, John G. K. Williams, Gregory R. Bashford, Jiyan Chen, Dan Draney, Nara Narayanan, Bambi Reynolds, Pamela Sheaff Dec 2009

Charge Switch Nucleotides, John G. K. Williams, Gregory R. Bashford, Jiyan Chen, Dan Draney, Nara Narayanan, Bambi Reynolds, Pamela Sheaff

Biomedical Imaging and Biosignal Analysis Laboratory

The present invention provides compounds, methods and systems for sequencing nucleic acid using single molecule detection. Using labeled NPs that exhibit charged-switching behavior, single-molecule DNA sequencing in a microchannel sorting system is realized. In operation, sequencing products are detected enabling real-time sequencing as successive detectable moieties flow through a detection channel. By electrically sorting charged molecules, the cleaved product molecules are detected in isolation Without interference from unincorporated NPs and Without illuminating the polymerase-DNA complex.