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Full-Text Articles in Medicine and Health Sciences

Psychosocial Determinants Of Medication Adherence Among Hiv-Positive Individuals In Mexico City, Anthony Vajda Apr 2018

Psychosocial Determinants Of Medication Adherence Among Hiv-Positive Individuals In Mexico City, Anthony Vajda

Counseling & Human Services Theses & Dissertations

This dissertation examined the relationships among disclosure, social support, exposure to violence, impulsivity, depression, stressors, and medication adherence, using a correlational design and a sequential logistic regression. The researcher used two samples of 146 from an archival data set of participants to create two subsets of the data (Data Set 1 & Data Set 2). These participants had been diagnosed with a mental illness and were prescribed a medication regimen for HIV treatment at the time of intake in a specialized clinic in Mexico City. Archival data was obtained through a demographic intake questionnaire and the use of valid and …


Physiological Tremor In Handgun Aiming And Shooting Tasks, Kyle J. Kellran Apr 2018

Physiological Tremor In Handgun Aiming And Shooting Tasks, Kyle J. Kellran

Human Movement Studies & Special Education Theses & Dissertations

When holding an outstretched limb or aiming at a target, humans produce small involuntary fluctuations that may hamper performance. Current strategies for minimizing the impact of tremulous oscillations predominantly include both extrinsic and intrinsic support. The aim of the current dissertation is to better understand the parameters of physiological tremor associated with handgun aiming with the end goal of improving shooting accuracy. Experiment 1 focused on handgun aiming and the influence of different arm posture adopted during aiming. Experiment 2 expanded upon the findings of experiment 1 by comparing tremor during finger pointing, handgun aiming, and handgun shooting. Experiment 3 …


Current Radiation Safety Practices Of United States Dental Hygienists, Kimberly Lintag Apr 2018

Current Radiation Safety Practices Of United States Dental Hygienists, Kimberly Lintag

Dental Hygiene Theses & Dissertations

Problem: The purpose of this study was to determine licensed dental hygienists’ current radiation safety practices.

Methods: Data was collected with a 22 item, IRB exempt online survey administered to a sample of 1,500 U.S. dental hygienists who were subscribers of a professional journal. Questions focused on respondents’ use of ADA selection criteria guidelines, policies implemented by their dental practice, and hand-held portable x-ray device use and training. A response rate of 38% (N=566) was obtained. Cross tabulations were obtained using logistic regression and general linear models for significance at a 0.05 level.

Results: A majority of respondents had an …


The Effect Of The Behavioral Analysis Feedback Model On Improving Performance Of Nursing Students During Clinical Rotations, Melanie Elizabeth Ross Apr 2018

The Effect Of The Behavioral Analysis Feedback Model On Improving Performance Of Nursing Students During Clinical Rotations, Melanie Elizabeth Ross

STEMPS Theses & Dissertations

This study explored the effects the Behavioral Analysis Feedback (BAF) Model had on improving nursing student’s performance. Research studies surrounding feedback primarily centered on frameworks designed as models for delivering feedback as well as the timing for delivering feedback. In addition, past research has also focused on individual elements that affect performance with little regard to environmental elements. The BAF Model was conceptualized based on the importance of providing feedback to nursing students while emphasizing three individual and three environmental elements that have the potential to influence behavior.

This multiple measure, single-case study utilized a quasi-experimental pre-post intervention study design. …


Behavioral Determinants Of Exercise-Related Injury Prevention Program Participation, Emily M. Hartley Apr 2018

Behavioral Determinants Of Exercise-Related Injury Prevention Program Participation, Emily M. Hartley

Health Services Research Dissertations

Lower extremity injuries are common among the physically active population. There are many negative consequences associated with these injuries which have led to a shift in clinical practice towards prevention. Exercise-related injury prevention programs (ERIPPs) were created to prevent musculoskeletal injuries that occur due to participation in physical activity. However, one of the major limitations to their effectiveness is the compliance of the users to complete the prescribed exercises. It is imperative to better understand the reasons why compliance is low to develop implementation strategies and improve compliance rates.

The overarching purpose of this dissertation was to gain a better …


Families Communicating About Health: Conceptualization And Validation Of The Family Health Communication Quotient Scale, Erin E. Gafner Apr 2018

Families Communicating About Health: Conceptualization And Validation Of The Family Health Communication Quotient Scale, Erin E. Gafner

Communication & Theatre Arts Theses

Research on family health communication is based in part on the assumption that families actually communicate about a wide variety of topics pertaining to their health and wellness (or lack thereof). However, whether they do communicate about health and wellness, and exactly what they communicate about concerning health and wellness as well as how often, remains undocumented. To begin to address this problem of documenting the extent to which families talk about health and wellness, this study adapted Warren and Neer’s (1986) Family Sex Communication Quotient to create and report the preliminary validation of a new measurement instrument called the …


College Of Health Sciences E-Newsletter, March 2018, Irvin B. Harrell (Editor) Mar 2018

College Of Health Sciences E-Newsletter, March 2018, Irvin B. Harrell (Editor)

Ellmer College of Health Sciences Newsletters

March 2018 issue of Old Dominion University's College of Health Sciences Newsletter.


Gas Plasma Pre-Treatment Increases Antibiotic Sensitivity And Persister Eradication In Methicillin-Resistant Staphylococcus Aureus, Li Guo, Ruobing Xu, Yiming Zhao, Dingxin Liu, Zhijie Liu, Xiaohua Wang, Hailan Chen, Michael G. Kong Mar 2018

Gas Plasma Pre-Treatment Increases Antibiotic Sensitivity And Persister Eradication In Methicillin-Resistant Staphylococcus Aureus, Li Guo, Ruobing Xu, Yiming Zhao, Dingxin Liu, Zhijie Liu, Xiaohua Wang, Hailan Chen, Michael G. Kong

Bioelectrics Publications

Methicillin-resistant Staphylococcus aureus (MRSA) is a major cause of serious nosocomial infections, and recurrent MRSA infections primarily result from the survival of persister cells after antibiotic treatment. Gas plasma, a novel source of ROS (reactive oxygen species) and RNS (reactive nitrogen species) generation, not only inactivates pathogenic microbes but also restore the sensitivity of MRSA to antibiotics. This study further found that sublethal treatment of MRSA with both plasma and plasma-activated saline increased the antibiotic sensitivity and promoted the eradication of persister cells by tetracycline, gentamycin, clindamycin, chloramphenicol, ciprofloxacin, rifampicin, and vancomycin. The short-lived ROS and RNS generated by plasma …


Utilization, Receptivity And Reactivity To Interactive Voice Response Daily Monitoring In Risky Drinking Smokers Who Are Motivated To Quit, Amy M. Cohn, Hoda Elmasry, Sarah J. Ehlke Mar 2018

Utilization, Receptivity And Reactivity To Interactive Voice Response Daily Monitoring In Risky Drinking Smokers Who Are Motivated To Quit, Amy M. Cohn, Hoda Elmasry, Sarah J. Ehlke

Psychology Faculty Publications

INTRODUCTION Interactive Voice Response (IVR) technology has become an increasingly popular and valid method for collecting Ecological Momentary Assessment (EMA) data on a variety of health-risk behaviors, including daily alcohol use and cigarette smoking, and for stimulating behavior change. However, very little research has evaluated the parameters of IVR compliance and reactivity in respondents who may have greater problem severity than samples previously examined in published IVR studies. This study examined the prevalence and correlates of use, receptivity and reactivity to IVR monitoring in 77 untreated risky drinking smokers who were motivated to quit within the next 6 months.

METHODS …


Exploring The Influence Of The Peer Educator Role On Physical Activity, Exercise Patterns, Physical Fitness, Daily Functioning, And Health Harming Habits In People Living With Hiv, Stephanie Jen, Jacob Wait, Amanda Pedrazoli, Kenneisha Edmonds Feb 2018

Exploring The Influence Of The Peer Educator Role On Physical Activity, Exercise Patterns, Physical Fitness, Daily Functioning, And Health Harming Habits In People Living With Hiv, Stephanie Jen, Jacob Wait, Amanda Pedrazoli, Kenneisha Edmonds

Undergraduate Research Symposium

With the progression of standardized HIV treatment and antiretroviral drugs, the outcomes for people living with HIV (PLHIV) have improved from a death sentence to a manageable chronic disease. Although PLHIV are living longer than before, they experience multi-morbidities more frequently and earlier than persons without HIV. These morbidities, such as type-2 diabetes, cardiovascular diseases, and obesity, are associated with sedentary lifestyles. It is well-established in the research of the general population that regular physical activity is a health promotion behavior that can prevent and/or mitigate the onset and severity of chronic diseases. Also recent meta-analyses have linked exercise to …


College Of Health Sciences Newsletter, February 2018, Irvin B. Harrell (Editor) Feb 2018

College Of Health Sciences Newsletter, February 2018, Irvin B. Harrell (Editor)

Ellmer College of Health Sciences Newsletters

February 2018 issue of Old Dominion University's College of Health Sciences Newsletter.


Inactivation Of Myeloma Cancer Cells By Helium And Argon Plasma Jets: The Effect Comparison And The Key Reactive Species, Zeyu Chen, Qingjie Cui, Chen Chen, Dehui Xu, Dingxin Liu, H. L. Chen, Michael G. Kong Feb 2018

Inactivation Of Myeloma Cancer Cells By Helium And Argon Plasma Jets: The Effect Comparison And The Key Reactive Species, Zeyu Chen, Qingjie Cui, Chen Chen, Dehui Xu, Dingxin Liu, H. L. Chen, Michael G. Kong

Bioelectrics Publications

In plasma cancer therapy, the inactivation of cancer cells under plasma treatment is closely related to the reactive oxygen and nitrogen species (RONS) induced by plasmas. Quantitative study on the plasma-induced RONS that related to cancer cells apoptosis is critical for advancing the research of plasma cancer therapy. In this paper, the effects of several reactive species on the inactivation of LP-1 myeloma cancer cells are comparatively studied with variable working gas composition, surrounding gas composition, and discharge power. The results show that helium plasma jet has a higher cell inactivation efficiency than argon plasma jet under the same discharge …


Human Factors And Simulation In Emergency Medicine, Emily M. Hayden, Ambrose H. Wong, Jeremy Ackerman, Margaret K. Sande, Charles Lei, Leo Kobayashi, Michael Cassara, Dylan D. Cooper, Kimberly Perry, William E. Lewandowski, Mark W. Scerbo Feb 2018

Human Factors And Simulation In Emergency Medicine, Emily M. Hayden, Ambrose H. Wong, Jeremy Ackerman, Margaret K. Sande, Charles Lei, Leo Kobayashi, Michael Cassara, Dylan D. Cooper, Kimberly Perry, William E. Lewandowski, Mark W. Scerbo

Psychology Faculty Publications

This consensus group from the 2017 Academic Emergency Medicine Consensus Conference "Catalyzing System Change through Health Care Simulation: Systems, Competency, and Outcomes" held in Orlando, Florida, on May 16, 2017, focused on the use of human factors (HF) and simulation in the field of emergency medicine (EM). The HF discipline is often underutilized within EM but has significant potential in improving the interface between technologies and individuals in the field. The discussion explored the domain of HF, its benefits in medicine, how simulation can be a catalyst for HF work in EM, and how EM can collaborate with HF professionals …


Use Of An Optical Scanning Device To Monitor The Progress Of Noninvasive Treatments For Chest Wall Deformity: A Pilot Study, Robert E. Kelly Jr., Robert J. Obermeyer, Ann Kuhn, Frazier W. Frantz, Mohammad F. Obeid, Nahom Kidane, Frederic D. Mckenzie Jan 2018

Use Of An Optical Scanning Device To Monitor The Progress Of Noninvasive Treatments For Chest Wall Deformity: A Pilot Study, Robert E. Kelly Jr., Robert J. Obermeyer, Ann Kuhn, Frazier W. Frantz, Mohammad F. Obeid, Nahom Kidane, Frederic D. Mckenzie

Computational Modeling & Simulation Engineering Faculty Publications

Background: The nonsurgical treatment of chest wall deformity by a vacuum bell or external brace is gradual, with correction taking place over months. Monitoring the progress of nonsurgical treatment of chest wall deformity has relied on the ancient methods of measuring the depth of the excavatum and the protrusion of the carinatum. Patients, who are often adolescent, may become discouraged and abandon treatment. Methods: Optical scanning was utilized before and after the intervention to assess the effectiveness of treatment. The device measured the change in chest shape at each visit. In this pilot study, patients were included if they were …


Gender Disparities In The Association Between Socio-Demographics And Non-Communicable Disease Risk Factors Among Adults With Disabilities In Shanghai, China, Youran Zhang, Gang Chen, Qi Zhang, Jun Lu, Huijiong Yu Jan 2018

Gender Disparities In The Association Between Socio-Demographics And Non-Communicable Disease Risk Factors Among Adults With Disabilities In Shanghai, China, Youran Zhang, Gang Chen, Qi Zhang, Jun Lu, Huijiong Yu

Community & Environmental Health Faculty Publications

BACKGROUND. Non-communicable disease (NCD) risk factors can co-exist with disability and cause a greater burden on the health status of adults with disabilities. A lack of egalitarian social policies in China may result in gender disparities in the NCD risk factors of adults with disabilities. However, little is known about the gender disparities in the association between socio-demographics and NCD risk factors among adults with disabilities in China; consequently, we examined this association among adults with disabilities in Shanghai, China.

METHODS. We used the health examination data of 44,896 adults with disabilities in Shanghai in 2014. Descriptive analyses and …


Health Professions Students' Attitudes Toward Teamwork Before And After An Interprofessional Education Co-Curricular Experience, Shelley C. Mishoe, Kimberly Adams Tufts, Leigh Ann Diggs, James D. Blando, Denise Claiborne, Johanna M. Hoch, Martha L. Walker Jan 2018

Health Professions Students' Attitudes Toward Teamwork Before And After An Interprofessional Education Co-Curricular Experience, Shelley C. Mishoe, Kimberly Adams Tufts, Leigh Ann Diggs, James D. Blando, Denise Claiborne, Johanna M. Hoch, Martha L. Walker

Community & Environmental Health Faculty Publications

Background: Effective interprofessional collaboration may positively impact clinical outcomes, patient satisfaction, and cost effectiveness. However, educational silos and discipline-specific socialization have reinforced each health profession’s independent values, attitudes, and problem-solving approaches.

Methods and Findings: Students’ (N = 376) attitudes about teamwork were measured with the Interprofessional Attitudes Scale, Teamwork, Roles, and Responsibilities subscale using a pretest-posttest design. Experiential learning strategies and a case study approach were used to introduce students to the roles and responsibilities of the students’ disciplines. There was a positive mean difference in pretest-posttest measures (p < .001) with a moderate effect size (r = .27).

Conclusions: Providing opportunities for pre-licensure health sciences …


Life In Hampton Roads Survey Press Release #4: Health, Health Care, And Other Health Related Issues, Social Science Research Center, Old Dominion University Jan 2018

Life In Hampton Roads Survey Press Release #4: Health, Health Care, And Other Health Related Issues, Social Science Research Center, Old Dominion University

Life in Hampton Roads Survey Report

[Introductory paragraph]

This report examines regional and sub-regional measures of health and health related issues from the 2018 Life In Hampton Roads survey (LIHR 2018) conducted by the Old Dominion University Social Science Research Center. Data from prior years is also provided when available to show comparisons in responses over time. Responses were weighted by city population, race, age, gender, and phone usage (cell versus land-line) to be representative of the Hampton Roads region. For additional information on survey methodology, and analyses of other issues, please see the SSRC website at www.odu.edu/ssrc. The health of Hampton Roads residents is …


Research Agenda In Developing Core Reference Ontology For Human Intelligence/Machine-Intelligence Electronic Medical Records System, Ziniya Zahedi, Teddy Steven Cotter Jan 2018

Research Agenda In Developing Core Reference Ontology For Human Intelligence/Machine-Intelligence Electronic Medical Records System, Ziniya Zahedi, Teddy Steven Cotter

Engineering Management & Systems Engineering Faculty Publications

Beginning around 1990, efforts were initiated in the medical profession by the U.S. government to transition from paper based medical records to electronic medical records (EMR). By the late 1990s, EMR implementation had already encountered multiple barriers and failures. Then President Bush set forth the goal of implementing electronic health records (EHRs), nationwide within ten years. Again, progress toward EMR implementation was not realized. President Obama put new emphasis on promoting EMR and health care technology. The renewed emphasis did not overcome many of the original problems and induced new failures. Retrospective analyses suggest that failures were induced because programmers …


Postprofessional Athletic Training Students' Perceptions Concerning The Health Care Competencies, Cailee E. Welch Bacon, Bonnie L. Van Lunen, Dorice A. Hankemeier Jan 2018

Postprofessional Athletic Training Students' Perceptions Concerning The Health Care Competencies, Cailee E. Welch Bacon, Bonnie L. Van Lunen, Dorice A. Hankemeier

Rehabilitation Sciences Faculty Publications

Context: Over a decade ago, the Institute of Medicine indicated that all health care professionals should be educated in several health care competency areas (quality improvement, health care informatics, interprofessional education and collaborative practice, evidence-based practice, and patient-centered care). Despite this initiative, athletic training has only recently incorporated these competencies throughout education.

Objective: To assess postprofessional athletic training students' perceived abilities and importance regarding 6 core competencies.

Design: Cross-sectional. Setting: Self-reported paper survey. Patients or Other

Participants: A total of 221 from a convenience sample of 258 postprofessional athletic training students (85.7%) completed the survey (82 males, 138 females; age …


Mental Health And Drivers Of Need In Emergent And Non-Emergent Emergency Department (Ed) Use: Do Living Location And Non-Emergent Care Sources Matter?, Moira C. Mcmanus, Robert J. Cramer, Maureen Boshier, Muge Akpinar-Elci, Bonnie Van Lunen Jan 2018

Mental Health And Drivers Of Need In Emergent And Non-Emergent Emergency Department (Ed) Use: Do Living Location And Non-Emergent Care Sources Matter?, Moira C. Mcmanus, Robert J. Cramer, Maureen Boshier, Muge Akpinar-Elci, Bonnie Van Lunen

Community & Environmental Health Faculty Publications

Emergency department (ED) utilization has increased due to factors such as admissions for mental health conditions, including suicide and self-harm. We investigate direct and moderating influences on non-emergent ED utilization through the Behavioral Model of Health Services Use. Through logistic regression, we examined correlates of ED use via 2014 New York State Department of Health Statewide Planning and Research Cooperative System outpatient data. Consistent with the primary hypothesis, mental health admissions were associated with emergent use across models, with only a slight decrease in effect size in rural living locations. Concerning moderating effects, Spanish/Hispanic origin was associated with increased likelihood …


Student Readiness: Examining The Impact Of A University Outdoor Orientation Program, Eddie Hill, Timothy Posey, Edwin Gómez, Stephen L. Shapiro Jan 2018

Student Readiness: Examining The Impact Of A University Outdoor Orientation Program, Eddie Hill, Timothy Posey, Edwin Gómez, Stephen L. Shapiro

Human Movement Studies & Special Education Faculty Publications

This study examined the impact of a university outdoor orientation program on participants’ transition to higher education. Researchers focused on participants’ experiences during the program, utilizing a mixed-methods approach to measure resilience and well-being. Pre- and posttest instruments consisted of two pre-established scales and a series of open-ended questions, which were administered during a 4-day university outdoor orientation program. Findings indicated significant improvement of resilience and well-being in participants through outdoor orientation program involvement. Additionally, direct content analysis identified major themes related to resilience, well-being, and readiness for college.


Youth Leisure-Time Physical Activity From The Perspectives Of Young Adults With Visual Impairments, Justin A. Haegele Jan 2018

Youth Leisure-Time Physical Activity From The Perspectives Of Young Adults With Visual Impairments, Justin A. Haegele

Human Movement Studies & Special Education Faculty Publications

The purpose of this study was to examine the meaning that young adults with visual impairments ascribe to their youth leisure-time physical activity experiences. This study adopted an interpretative phenomenological analysis (IPA) research approach. Ten participants (aged 21-34 years; eight women, two men) with visual impairments were included in this study. Semi-structured, audio-taped telephone interviews acted as the primary source of data for this study. Data were analyzed thematically using a four-step process informed by IPA and three interrelated themes were constructed: (a) "I just always felt normal when I was doing them": Preferences for unstructured activities, (b) "They didn't …


Improving Public Health Readiness For Sea Level Rise: A New Initiative In Coastal Virginia, Steven M. Becker Jan 2018

Improving Public Health Readiness For Sea Level Rise: A New Initiative In Coastal Virginia, Steven M. Becker

Community & Environmental Health Faculty Publications

Sea level has been rising around the world, and in recent decades, the rate has been accelerating. Because rising seas have the potential to directly or indirectly affect the health of vast numbers of coastal communities and inhabitants, public health agencies and professionals—in conjunction with other fields—have a pivotal role to play in helping to protect populations, reduce and prevent health impacts, and foster resilience. This article discusses a novel effort that has been undertaken in Coastal Virginia to help prepare the next generation of public health professionals to grapple with sea level rise issues. The effort grew out of …


Wic Participation And Breastfeeding After The 2009 Wic Revision: A Propensity Score Approach, Kelin Li, Ming Wen, Megan Reynolds, Qi Zhang Jan 2018

Wic Participation And Breastfeeding After The 2009 Wic Revision: A Propensity Score Approach, Kelin Li, Ming Wen, Megan Reynolds, Qi Zhang

Community & Environmental Health Faculty Publications

In this study, we examined the association between participation in the Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) and breastfeeding outcomes before and after the 2009 revisions. Four-thousand-three-hundred-and-eight WIC-eligible children younger than 60 months were included from the 2005-2014 National Health and Nutrition Examination Survey (NHANES). We compared two birth cohorts with regard to their associations between WIC participation and being ever-breastfed and breastfed at 6 months. We estimated the average effect of the treatment for the treated to assess the causal effect of WIC participation on breastfeeding based on propensity score matching. The results showed that …


Wild-Type P53 Enhances Endothelial Barrier Function By Mediating Rac1 Signalling And Rhoa Inhibition, Nektarios Barabutis, Christiana Dimitropoulou, Betsy Gregory, John D. Catravas Jan 2018

Wild-Type P53 Enhances Endothelial Barrier Function By Mediating Rac1 Signalling And Rhoa Inhibition, Nektarios Barabutis, Christiana Dimitropoulou, Betsy Gregory, John D. Catravas

Bioelectrics Publications

Inflammation is the major cause of endothelial barrier hyper-permeability, associated with acute lung injury and acute respiratory distress syndrome. This study reports that p53 "orchestrates" the defence of vascular endothelium against LPS, by mediating the opposing actions of Rac1 and RhoA in pulmonary tissues. Human lung microvascular endothelial cells treated with HSP90 inhibitors activated both Rac1- and P21-activated kinase, which is an essential element of vascular barrier function. 17AAG increased the phosphorylation of both LIMK and cofilin, in contrast to LPS which counteracted those effects. Mouse lung microvascular endothelial cells exposed to LPS exhibited decreased expression of phospho-cofilin. 17AAG treatment …


Alteration Of Metabolite Profiling By Cold Atmospheric Plasma Treatment In Human Myeloma Cells, Dehui Xu, Yujing Xu, Ning Ning, Qingjie Cui, Zhijie Liu, Xiaohua Wang, Dingxin Liu, Hailan Chen, Michael G. Kong Jan 2018

Alteration Of Metabolite Profiling By Cold Atmospheric Plasma Treatment In Human Myeloma Cells, Dehui Xu, Yujing Xu, Ning Ning, Qingjie Cui, Zhijie Liu, Xiaohua Wang, Dingxin Liu, Hailan Chen, Michael G. Kong

Bioelectrics Publications

BACKGROUND: Despite new progress of chemotherapy in multiple myeloma (MM) clinical treatment, MM is still a refractory disease and new technology is needed to improve the outcomes and prolong the survival. Cold atmospheric plasma is a rapidly developed technology in recent years, which has been widely applied in biomedicine. Although plasma could efficiently inactivate various tumor cells, the effects of plasma on tumor cell metabolism have not been studied yet.

METHODS: In this study, we investigated the metabolite profiling of He plasma treatment on myeloma tumor cells by gas-chromatography time-of-flight (GC-TOF) mass-spectrometry. Meanwhile, by bioinformatic analysis such as GO and …


Nano-Pulse Stimulation Ablates Orthotopic Rat Hepatocellular Carcinoma And Induces Innate And Adaptive Memory Immune Mechanisms That Prevent Recurrence, Brittany P. Lassiter, Siqi Guo, Stephen J. Beebe Jan 2018

Nano-Pulse Stimulation Ablates Orthotopic Rat Hepatocellular Carcinoma And Induces Innate And Adaptive Memory Immune Mechanisms That Prevent Recurrence, Brittany P. Lassiter, Siqi Guo, Stephen J. Beebe

Bioelectrics Publications

Nano-pulse stimulation (NPS), previously called nsPEFs, induced a vaccine-like effect after ablation of orthotopic N1-S1 hepatocellular carcinoma (HCC), protecting rats from subsequent challenges with N1-S1 cells. To determine immunity, immune cell phenotypes were analyzed in naïve, treated and protected rats. NPS provides a positive, post-ablation immuno-therapeutic outcome by alleviating immunosuppressive T regulatory cells (Treg) in the tumor microenvironment (TME), allowing dendritic cell influx and inducing dynamic changes in natural killer cells (NKs), NKT-cells and T-lymphocytes in blood, spleen and liver. NPS induced specific increases in NKs and NKT-cells expressing CD8 and activation receptors CD314-NKG2D and CD161 (NK1.1) in the TME …


Tumor Cell Death After Electrotransfer Of Plasmid Dna Is Associated With Cytosolic Dna Sensor Upregulation, Katarina Znidar, Masa Bosnjak, Nina Semenova, Olga N. Pakhomova, Loree Heller, Maja Cemazar Jan 2018

Tumor Cell Death After Electrotransfer Of Plasmid Dna Is Associated With Cytosolic Dna Sensor Upregulation, Katarina Znidar, Masa Bosnjak, Nina Semenova, Olga N. Pakhomova, Loree Heller, Maja Cemazar

Bioelectrics Publications

Cytosolic DNA sensors are a subgroup of pattern recognition receptors (PRRs) and are activated by the abnormal presence of the DNA in the cytosol. Their activation leads to the upregulation of pro-inflammatory cytokines and chemokines and can also induce cell death. The presence of cytosolic DNA sensors and inflammatory cytokines in TS/A murine mammary adenocarcinoma and WEHI 164 fibrosarcoma cells was demonstrated using real time reverse transcription polymerase chain reaction (RT-PCR), western blotting and enzyme-linked immunosorbent assay (ELISA). After electrotransfer of plasmid DNA (pDNA) using two pulse protocols, the upregulation of DNA-depended activator of interferon regulatory factor or Z-DNA binding …


Cold Atmospheric Plasma As A Potential Tool For Multiple Myeloma Treatment, Dehui Xu, Yujing Xu, Qingjie Cui, Dingxin Liu, Zhijie Liu, Xiaohua Wang, Yanjie Yang, Niaojuan Feng, Rong Liang, Hailan Chen, Kai Ye, Michael G. Kong Jan 2018

Cold Atmospheric Plasma As A Potential Tool For Multiple Myeloma Treatment, Dehui Xu, Yujing Xu, Qingjie Cui, Dingxin Liu, Zhijie Liu, Xiaohua Wang, Yanjie Yang, Niaojuan Feng, Rong Liang, Hailan Chen, Kai Ye, Michael G. Kong

Bioelectrics Publications

Multiple myeloma (MM) is a fatal and incurable hematological malignancy thus new therapy need to be developed. Cold atmospheric plasma, a new technology that could generate various active species, could efficiently induce various tumor cells apoptosis. More details about the interaction of plasma and tumor cells need to be addressed before the application of gas plasma in clinical cancer treatment. In this study, we demonstrate that He+O2 plasma could efficiently induce myeloma cell apoptosis through the activation of CD95 and downstream caspase cascades. Extracellular and intracellular reactive oxygen species (ROS) accumulation is essential for CD95-mediated cell apoptosis in response …


Upregulation Of Dna Sensors In B16.F10 Melanoma Spheroid Cells After Electrotransfer Of Pdna, Katarina Znidar, Masa Bosnjak, Tanja Jesenko, Loree C. Heller, Maja Cemazar Jan 2018

Upregulation Of Dna Sensors In B16.F10 Melanoma Spheroid Cells After Electrotransfer Of Pdna, Katarina Znidar, Masa Bosnjak, Tanja Jesenko, Loree C. Heller, Maja Cemazar

Bioelectrics Publications

Increased expression of cytosolic DNA sensors, a category of pattern recognition receptor, after control plasmid DNA electrotransfer was observed in our previous studies on B16.F10 murine melanoma cells. This expression was correlated with the upregulation of proinflammatory cytokines and chemokines and was associated with cell death. Here, we expanded our research to include the influence of features of cells in a 3-dimensional environment, which better represents the tumors’ organization in vivo. Our results show that lower number of cells were transfected in spheroids compared to 2-dimensional cultures, that growth was delayed after electroporation alone or after electrotransfer of plasmid …