Medicine and Health Sciences Commons^™

Impedance Analysis Of Tissues In Nspef Treatment For Cancer Therapy, Edwin Ayobami Oshin

Biomedical Engineering Theses & Dissertations

Nanosecond pulsed electric field (nsPEF) for cancer therapy is characterized by applications of high voltage pulses with low pulsed energy to induce non-thermal effects on tissues such as tumor ablation. It nonthermally treats tissues via electroporation. Electroporation is the increase in permeabilization of a cell membrane due to the application of high pulsed electric field. The objective of this study was to investigate the effect of nsPEF on tissue by monitoring the tissue’s impedance in real-time. Potato slices (both untreated and electroporated), and tumors extracted from female BALBc mice were studied. 100ns, 1-10kV pulses were applied to the tissues using …

Tumor Immunology: Understanding The Immune System And Cancer To Enhance The Efficacy Of Cancer Immunotherapies, Natasha Malibu Lenart

Master's Theses

Tumor cells are notorious for their ability to escape immune surveillance, but developments in the understanding of the tumor microenvironment and how the immune system can be re-activated in tumors have had significant clinical impact. Commercially available and experimental methods such as adoptive cellular therapy, cytokine stimulation, and immune checkpoint blockade are promising immunotherapies for a variety of cancers, including solid tumors and hematological malignancies. However, induction of persistent, long-term anti-tumor immunity after initial treatment is infamously difficult. as a result, scientists are searching for new approaches to improve established immunotherapies. by employing combination treatments or enhancing the functionality of …

Targeting Epha2 In Hepatocellular Carcinoma: Uncovering Its Therapeutic Potential And Beyond, Hao Wang

Dissertations

Hepatocellular Carcinoma (HCC) remains one of the deadliest malignancies worldwide. One major obstacle to treatment is a lack of effective molecular-targeted therapies. Here, we identify EphA2 receptor tyrosine kinase as a clinically relevant target for HCC. EphA2 expression and signaling is enriched in human HCC and associates with poor prognosis. Loss of EphA2 suppressed the initiation and growth of HCC in vitro and in vivo. Furthermore, CRISPR/CAS9 mediated EphA2 inhibition significantly delayed tumor development in a genetically-engineered murine model of HCC. Mechanistically, we discovered that targeting EphA2 simultaneously suppresses both JAK1/STAT3 and AKT signaling, two separate oncogenic pathways in HCC. …

Examining The Role Of Metabolic Pathways As Therapeutic Modalities For Triple Negative Breast Cancer, Jeremy Andrew Johnson

Theses and Dissertations--Toxicology and Cancer Biology

Triple negative breast cancer (TNBC) comprises 15-20% of breast cancers, affects a younger patient population than other subtypes, and is very aggressive. TNBC is comprised of a diverse group of tumors that have proven refractory to targeted therapy and can be difficult to treat. Patients generally receive neoadjuvant chemotherapy (NAC), surgery, and radiotherapy. The standard of care for NAC includes a taxane, an anthracycline, and/or cyclophosphamide, and administration of NAC has resulted in pathological complete response (pCR) in 30-40% of patients. However, a majority of TNBC patients will not reach pCR and instead have residual disease (RD), which is associated …

The Effect Of Interventions On Radiotherapy-Induced Skin Toxicity: A Systematic Review, Claudia R. Figueroa

Honors Undergraduate Theses

Various studies show a variety of interventions for radiotherapy-induced skin toxicity. Radiotherapy-induced skin toxicity is the most common side effect for women with breast cancer who undergo radiotherapy sessions. Intervention agents include topical creams, barrier films, oral agents, as well as laser therapy. However, despite the variety of intervention agents available, there is still a lack of accepted guidelines to manage radiotherapy-induced skin toxicity. This thesis aims to conduct a systematic review and meta-analysis of published randomized controlled trials with the primary purpose of exploring the available intervention methods to prevent radiotherapy-induced skin toxicity and evaluate the effects of different …

The Effect Of A Sun Damage Simulation Photography App On The Skin-Protective Behavior Intentions Of Women With Children Age 18 Or Younger, James Bowlds

DNP Projects

Abstract

Background: Skin cancer is the most common form of cancer diagnosed in the U.S. annually, despite being a largely preventable disease through the limitation of ultraviolet radiation exposure. Attempts to decrease its incidence have focused on appearance-based interventions. These have been effective at improving sun-protective behaviors among various subpopulations including people of color. Anecdotal observations suggest mothers more frequently utilize sun protection for their children than on themselves.

Purpose: The purpose of this project was to gain an understanding of the sun protection practices and beliefs of Caucasian and African American mothers, to assess the response to an appearance-based …

The Association Between Testicular Cancer And Female Reproductive Cancers: A Systematic Review, Alyssa Church

Honors Undergraduate Theses

The most common neoplasm found in young to middle-aged men is testicular cancer (TCa). This disease not only poses a risk of early death, but can also affect a male's fertility and testosterone levels and can diminish one's mental health and/or quality of life. One particular line of research that is emerging in the field is a possible genetic association of TCa with female reproductive cancers. We employed a systematic review to assess the methodological quality of articles that met the inclusionary criteria. To be selected for this review, articles had to go through a primary, secondary, and tertiary screening …

Rural Disparities In Lung Cancer Mortality: An Ecologic Study In Florida, Batel Amouyal

Honors Undergraduate Theses

Lung cancer is the leading cause of cancer death in the United States and worldwide. The higher mortality among patients with lung cancer is related to cases being diagnosed in late stage where treatment is limited. Urban and rural health outcomes are potentially influenced by differences in accessibility to health care services. We are unaware of existing research examining geographic differences in or factors related to lung cancer mortality in Florida. Therefore, this study aims to examine lung cancer mortality differences between urban and rural counties in Florida. We examined all 67 counties in Florida to investigate if a rural …

Residential Radon Exposure, Its Contribution To Lung Cancer, And Social Determinants Of Radon Testing, Stacy Stanifer

Theses and Dissertations--Nursing

Lung cancer is a highly preventable form of cancer. Cigarette smoking is the leading cause of lung cancer followed by radon gas exposure and exposure to secondhand smoke. Kentucky leads the nation in both incidence and mortality from lung cancer. Tobacco use in Kentucky continues to be a major public health concern as nearly one-quarter of adults report current tobacco use and just over one-third of Kentucky homes with children lack rules which prohibit smoking in the home. Radon, a colorless, odorless radioactive gas, occurs naturally from the decay of uranium found in rocks and soil and is harmful when …

The Role Of Bca2 In Regulation Of Warburg-Like Glucose And Lactate Metabolism In Breast Cancer Cell Lines, Richard T. Arkwright Iii

Wayne State University Dissertations

Modified metabolism is a hallmark of cancer cell biology known as “The Warburg Effect,” characterized by increased glucose-consumption and lactate-production, providing the metabolites and energy necessary for rapid proliferation. Breast-cancer-associated-gene-2 (BCA2) is an E3-Ub-ligase known to modulate AMPK, the “master-regulator of energy-homeostasis.” BCA2 is an oncogene associated with poor patient-survival and breast cancer invasiveness. Phospho-proteomic analysis of siBCA2-MDA-MB-231 knockdown-(KD) revealed enrichment of Nicotinamide-Nucleotide-Adenylyl-transferase-1 (NMNAT1), an essential enzyme in nuclear NAD-synthesis and a tumor-suppressor.

Initial experiments demonstrated that glucose concentration was positively correlated with BCA2 and inversely with NMNAT1 protein expression. shBCA2-KD in MDA-MB-468/-231 reproduced the inverse correlation between BCA2 and …

The Impact Of Dietary Intake On Mortality Risk In Colorectal Cancer Survivors, Ellen Chow

Walden Dissertations and Doctoral Studies

The colorectal cancer (CRC) survivor population is increasing in the United States. The lack of effective dietary recommendations in recurrence prevention undermines the health-related quality of life of survivors. Grounded in the socioecological model, dietary behavior is a personal-level risk factor that individuals may control. This study investigated the CRC-specific mortality risk as predicted by diet quality, dietary fiber intake, and dietary fat intake in hope of contributing to future dietary recommendations. A secondary analysis using data from 1,166 CRC survivors in the Multiethnic Cohort Study was analyzed via Cox proportional hazard regression models to estimate mortality risk. Results from …

Caring For Young Adults With Cancer: A Systematic Review, Sarah M. Pelletier

All Graduate Theses, Dissertations, and Other Capstone Projects

Young adulthood is unique period of life in which critical developmental milestones are achieved amid dynamic physical, emotional, and social changes. During this period of life, young adults are charged with establishing personal and social independence. When challenged with a cancer diagnosis, the already turbulent late teens, twenties, and thirties are dramatically and permanently altered. Hence, the needs of young adults vary from that of their pediatric and older adult counterparts. The aim of this systematic review of the literature was to identify what age-specific needs must be addressed by healthcare professionals to enhance quality of care and outcomes for …

New Persistent And Chronic Opioid Use In Cancer Survivors After Curative Intent Radiation, Elena V. Fernández

Theses and Dissertations

Background: Emerging evidence suggests that as more patients are surviving cancer, new persistent opioid use (no prior exposure to opioids before cancer therapy but requiring opioid prescriptions after curative intent treatment; NPOU) is of greater concern. In patients receiving curative intent radiation (definitive radiation therapy and as treatment for cure; CIR), the extent to which patients develop NPOU or continue opioid use (COU) following CIR is not known. Neither are factors associated with NPOU or COU, opioid doses, or time to discontinuation (TTD) of opioids in 5CS known. Objectives: Describe longitudinal trends opioid use in cancer survivors who received CIR, …

Antiresorptive Bone Therapy Use In Advanced Lung Cancer And Associated Outcomes, Noor Naffakh

Theses and Dissertations--Pharmacy

Background/Rationale: Studies have shown antiresorptive agents decrease skeletal related events in metastatic non-small cell lung cancer. However, two prevalence studies have found low utilization rates of antiresorptive therapy in advanced lung cancer. The first study reported a rate of 14.8% during the 1995-2009 time period, while the second study reported a 33% usage rate during the time frame of 2002-2011. We believe these low utilization rates are associated with the poor prognosis of these patients. The prognosis of advanced lung cancer has improved significantly since these trials were conducted, and the utilization of denosumab has not been evaluated. We hypothesize …

Exercise And Nutrition Induced Weight Loss For Prostate Cancer Patients, Rebekah Louise Wilson

Theses: Doctorates and Masters

This thesis encompasses six main chapters - two reviews and four experimental chapters, in addition to a general introduction and discussion.

Review 1 (Chapter 2) is a discussion of the negative impact of obesity on prostate cancer prognosis and common prostate cancer treatments.

Review 2 (Chapter 3) is an evaluation of the current literature examining prostate cancer patients receiving androgen deprivation therapy (ADT) and how exercise and nutrition interventions can be used to induce fat loss, while preserving or improving lean mass.

Study 1 (Chapter 4) is an examination of the efficacy of a weight loss program in altering body …

The Effects Of Autophagy And Senescence On Sensitivity To Cisplatin In Head And Neck Cancer, Zara H. Siddiqui

Theses and Dissertations

While current treatments in cancer, such as chemotherapy and radiation, can generally be effective in eliminating disease in patients, there also exists the possibility of recurrence of cancer cells over time. In patients diagnosed with locally advanced head and neck carcinoma, about 50-60% develop a loco-regional recurrence within two years, and 20-30% of patients develop metastatic disease at distant sites in the body [5]. On a cellular level, one mechanism for this survival may be that natural mechanisms such as autophagy and senescence play a role in allowing cells to survive after undergoing treatment. One standard of care chemotherapy for …