Medicine and Health Sciences Commons^™

Epacs: Epigenetic Regulators That Affect Cell Survival In Cancer., Catherine Murari

Theses & Dissertations

Cyclic adenosine monophosphate (cAMP) is a second messenger responsive to many external stimuli, playing an important role in cellular gene expression, metabolism, migration, differentiation, hypertrophy, apoptosis and secretion. All of these cellular functions are important in many diseases including cancer. Most of its effects were initially attributed to the classical protein kinase A (PKA) protein, but cellular functions such as proliferation and migration were found to be PKA independent and dependent on the newly discovered exchange proteins directly activated by cAMP (EPACs). EPACs are single polypeptides that primarily function as guanine exchange factors (GEFs) for Rap proteins that allow the …

Biodegradable Hybrid Nanogels For Combination Chemotherapy, Swapnil Desale

Theses & Dissertations

Combination chemotherapy is commonly used to treat cancer, because such a therapy regimens usually involve sequential administration of multiple drugs and allow targeting different cell signaling pathway. The co-delivery of drug combination at a controlled ratio via the same vehicle is offering the advantages such as spatial-temporal synchronization of drug exposure, synergistic therapeutic effects and suppression of drug resistance. Undoubtedly, there are several molecular and pharmacological factors that determine the effectiveness of drug combinations. A rationally designed drug combination is required since certain drug ratios and the definitive exposure to the targets of interest can only be synergistic while others …

The Effects Of Ketorolac And Its Enantiomers On Breast Cancer Proliferation And Metastasis, Amanda Peretti

Biomedical Sciences ETDs

Breast cancer is the second leading cause of cancer related deaths in women. Advanced breast cancer can metastasize to the lungs, liver, bones and brain becoming fatal conditions for many patients. There is a dire need for metastasis preventing medications, however the process required for a medication to become FDA approved for clinical use is long and arduous. Studies have found promising benefits for breast cancer patients given ToradolTM, or racemic ketorolac, as an NSAID during resection surgery. However, long-term use of racemic ketorolac is not recommended. Currently FDA-approved for use in the racemic form, ketorolac has the potential to …

Targeting Oncogenic Mirnas With Small Molecules For Breast Cancer Therapy, Paloma Del C. Monroig

Dissertations & Theses (Open Access)

The crucial role of microRNAs (miRNAs) in cancer pathobiology has driven the introduction of new drug development approaches such as miRNA inhibition. In order to advance miRNA-therapeutics, there is a need to develop screening strategies that can target tumors in a specific way. Small molecule inhibitors represent an attractive approach to pursue this. However, the absence of molecular structures for most of the miRNAs makes it very difficult to predict which inhibitors can bind to them. Herein we designed a strategy to screen for small molecules by assesing whether they could directly bind/ interact with miR-10b/miR-21. As part of our …

Immunomodulation Of Myeloid-Derived Suppressor Cells By Particulate B-Glucan In Cancer., Sabrin Husein Albeituni

Electronic Theses and Dissertations

Myeloid-derived suppressor cells (MDSC) are a heterogeneous population of immature myeloid cells that promote tumor progression. In this study, we investigated the effect of dectin-1 stimulation by yeast-derived particulate β-glucan in MDSC function and differentiation in cancer. In vivo treatment of mice bearing lewis lung carcinoma and mammary cell carcinoma with particulate β-glucan decreased tumor weight and splenomegaly, and reduced the accumulation of polymorphonuclear-MDSC (PMN-MDSC) but not monocytic-MDSC (M-MDSC) in the spleen and tumor. In addition, particulate β-glucan differentially modulated the function of different MDSC subsets; it enhanced PMN-MDSC respiratory burst and apoptosis, and induced the differentiation of M-MDSC into …

The Effect Of Mindfulness Meditation On Emotional Distress In Adult Cancer Patients, Marie A. Benoit

Evidence-Based Practice Project Reports

Significant advances in cancer treatments have been made over recent decades resulting in state of the art screening and treatment options that have contributed to higher rates of cancer survivorship. However, despite the increase in cancer survivors, a cancer diagnosis continues to be associated with a significant amount of emotional distress and psychological issues that further add to the burden of the disease. The Institute of Medicine (2008), recognizes that a failure to adequately address this problem results in needless suffering and may obstruct quality of care; thereby, leading to a potentially negative impact on the disease course. Among the …

Mental Health Screening Of Veterans Diagnosed With Cancer: Analyzing Psychological Distress And Attitudes Towards Seeking Professional Psychological Help, Jessica Jean Baptiste

Seton Hall University Dissertations and Theses (ETDs)

Studies analyzing mental health care utilization in veterans with a co-occurrence of a medical and psychological diagnosis are still underrepresented in the literature. The primary purpose of this study is to examine psychological screening methods of veterans diagnosed with cancer and determining when these veterans are more likely to endorse psychological symptoms. This information can contribute to the discussion of effective ways of integrating mental health screening in specialty care settings. A correlational, causal-comparative research design is employed to answer the study research questions and hypotheses. The participants include Vietnam, Korean, and World War II veterans seeking oncology services at …

Engineering Novel Detection And Treatment Strategies For Bacterial Therapy Of Cancer, Jan T. Panteli

Doctoral Dissertations

Finding and treating cancer is difficult due to limited sensitivity and specificity of current detection and treatment strategies. Many chemotherapeutic drugs are small molecules that are limited by diffusion, making it difficult to reach cancer sites requiring high doses that lead to systemic toxicity and off-target effects. Tomographic detection techniques, like PET, MRI and CT, are good at identifying macroscopic lesions in the body but are limited in their ability to detect microscopic lesions. Biomarker detection strategies are extremely sensitive and able to identify ng/ml concentrations of protein, but are poor at discriminating between healthy and disease state levels due …

Spiritual Quality Of Life Among Geriatric Cancer Patients: A Descriptive Correlational Study, Mary R. Leyendecker

Master of Science in Nursing Theses

A solid understanding of spiritual quality of life (SQOL) is critical for healthcare providers as they strive to achieve optimum care of geriatric cancer patient. However, there is a gap in the current literature regarding SQOL in geriatric cancer patients. Therefore, the purpose of this descriptive correlational study was to describe the spiritual quality of life (SQOL) among geriatric cancer patients as it relates to their demographic characteristics and self described wellness. A convenience sample of 32 participants from a cancer center in Midwest Ohio were recruited for this study. The participants completed the World Health Organization Quality of Life-Spiritual, …

Evaluation Of Vaccination Policies Among Outpatient Oncology Clinics In Utah: A Pilot Study, Sarah Louise Stocksdale

Theses and Dissertations

Background: In Utah, all major hospital facilities have employee vaccination policies. However, the presence of health care worker vaccination policies in the Utah outpatient oncology setting was unknown. Objectives: The objectives were to identify Utah oncology outpatient employee vaccination policies and to identify what consequences, if any, were present for unvaccinated employees. Methods: This was a cross-sectional, descriptive study design in which clinic managers from outpatient oncology clinics in Utah were asked, via questionnaire, to describe the clinic's employee vaccination policy and the consequences for refusing the policy. Findings: Most vaccination policies applied to employees primarily assigned to work in …

Prevalence Of Steroid-Induced Hyperglycemia In Patients With Mantle Cell Lymphoma Receiving High Dose Steroids, Veronica Brady

Dissertations & Theses (Open Access)

Background

Hyperglycemia as a result of glucocorticoid administration (steroid-induced hyperglycemia [SIH]) occurs in 32-37% of adult patients with cancer both with and without previous history of diabetes. Patients diagnosed with mantle cell lymphoma (MCL) are often treated with chemotherapy regimens that include high dose steroids as first line therapy. Little is known about the prevalence of steroid-induced hyperglycemia in patients with MCL receiving high dose steroids. Moreover it is not known if how the resulting hyperglycemia is managed impacts time to relapse or death.

Purpose

The primary aim of this study was to determine the prevalence of SIH in MCL …

The Effect Of An Educational Intervention On Knowledge And Intent To Participate In Cervical Cancer Screening, Ann Marie Trapp

Evidence-Based Practice Project Reports

Globally, cervical cancer ranks third among cancers affecting women (Arbyn et al., 2013). In the United States, approximately 12,000 women are diagnosed with cervical cancer and approximately 4,000 women die yearly (Centers for Disease Control and Prevention, 2014). Papanicolaou (Pap) screening is an effective means of detecting precancerous cell changes of the cervix with early cervical cancer diagnosis carrying a 91% five-year survival rate (Gonzalez et al., 2012). The purpose of this evidence-based practice project was to identify interventions that increase adherence to cervical cancer screening and to implement best practices to reduce unnecessary deaths related to late diagnoses of …

Fracture Toughness Of Irradiated Bone In A Murine Model, Lynda Marie Brady

Honors Capstone Projects - All

Cancer is a prevalent and diverse disease affecting fourteen million people in the United Sates alone. While some cancers can be treated effectively with one-time operations such as surgery, other cancers require more persistent treatments, commonly chemotherapy and radiation. These latter two treatments can have extreme side-effects and long-term ramifications. One long-term side effect of radiation therapy is a higher incidence of insufficiency fractures in bones of the skeleton. The mechanism responsible for this apparent weakness in bone is not well understood. In order to quantify changes in ductility following radiation therapy, femora from mice treated with 20 Gy radiation …

Killer Cell Activation By A Novel Multifunctional Protein: An Immuno/Gene Therapy For Cancer, Ashlee Tietje

All Dissertations

One of the characteristics of advanced tumors is the evasion of the immune system. There are multiple methods that tumor cells employ to achieve this including reducing the expression of activating ligands on the cell surface and a shift in the tumor microenvironment toward pro-tumor cytokines. The purpose of this research is to develop a novel bifunctional fusion protein that will target these two deficiencies in the tumor microenvironment and activate killer cells that are already present. The proposed protein combines the extracellular domain of a ligand for the killer cell activating receptor NKG2D and Interleukin-12 (IL-12). It is hypothesized …

A Comparison Of Cyfra 21-1, Nse, And Cea For The Serodiagnosis Of Lung Cancer, A Alexandra Knopp

Honors Theses

There were 224,210 new cases of lung cancer in the US during 2014, and of those cases, there 159,260 that died from lung cancer during 2014. Since early diagnosis and treatment leads to a better prognosis, the medical community is actively looking for new, noninvasive tests for the disease. This includes the search for new and effective tumor markers. Tumor markers are used in combination with other tests to diagnose cancer. After the diagnosis, they are used to follow a patient’s case. The three tumor markers studied were neuron specific enolase (NSE), carcinoembryonic antigen (CEA), and CYFRA 21-1. In this …

Multilevel Deregulation Of Survival Mechanisms In Npm-Alk+ T-Cell Lymphoma, Deeksha Vishwamitra

Dissertations & Theses (Open Access)

The anaplastic lymphoma kinase (ALK) is a single chain transmembrane receptor tyrosine kinase that belongs to the insulin receptor superfamily. Other members of this superfamily include the insulin receptor (IR), type I insulin-like growth factor receptor (IGF-IR), and the leukocyte tyrosine kinase. The common structural finding among these tyrosine kinases is the YXXXYY motif present within their respective tyrosine kinase domains. Binding of its ligands causes ALK receptor homodimerization and protein kinase activation. ALK has been previously shown to play a significant role during early developmental stages. In human embryos, the expression of ALK is mainly seen in …

Family Care Giver Knowledge, Patient Illness Characteristics, And Unplanned Hospital Admissions In Older Adults With Cancer, Patricia Geddie

Electronic Theses and Dissertations

Unplanned hospital admissions (UHA) in older adult populations are a recurring problem in older adults with cancer. Older adults comprise approximately 60% of cancer diagnoses and receive the majority of cancer treatment. However, little is known about why older adults under treatment for cancer experience a high number of unplanned hospital admissions. A review of the literature provided few study findings and a gap in the current knowledge was identified regarding the factors associated with unplanned hospital admissions in older adults under treatment for cancer. A conceptual framework based on the literature and this researcher's clinical experienced guided this study. …

Chemotherapy-Induced Peripheral Neuropathy Education And Assessment, Kim Schmidt

Doctor of Nursing Practice (DNP) Practice Innovation Projects

Chemotherapy-induced peripheral neuropathy (CIPN) is a debilitating side effect of most chemotherapeutic agents used to treat cancer. To ensure the best possible care and outcomes for patients, nurses should be at the forefront of CIPN education and patient assessments. The purpose of this project was to evaluate an educational intervention for oncology nurses on CIPN and CIPN patient assessment by assessing the knowledge and confidence level of nurses in assessing CIPN before and after an educational session. The methodology for this project was a quasi-experimental one-group pretest multiple posttest design with a convenience sample of nurses employed by the Cancer …

Cancer Stem Cells In The Screening Of Anticancer Drugs For Central Nervous System Tumors, Sarah Elizabeth Daron-Mathis

Theses, Dissertations and Capstones

There is a growing need (in the medical field) to design personalized therapy for cancer patients. Decades of cancer research have found no silver bullet that can cure all or even most patients. This study evaluated four patients affected by central nervous system (CNS) tumors (Ependymoma and Glioblastoma), and found that tumors with the same histology had unique responses to treatment. Each sample presented different levels of heterogeneity in expressed biomarkers and responded to drugs at varying levels.

Oncologists conventionally treat cancer patients with drugs tested in large clinical trials. However, often patients do not experience positive outcomes following treatments …

Dual Pi3k/Mtor Inhibition With Bez235 Augments The Therapeutic Efficacy Of Doxorubicin In Cancer Without Influencing Cardiac Function, David E. Durrant

Theses and Dissertations

Cancer continues to be a leading cause death in the United States despite improved treatments. Cancerous lesions form after acquiring oncogenic driver mutations or losing tumor suppressor function in normal cells. Traditional therapies have included use of genotoxic substances that take advantage of the increased growth rate and loss of tumor suppressor function to cause cell death. One such drug is the anthracycline antibiotic doxorubicin (DOX). DOX interchelates into DNA and disrupts transcriptional machinery while also poisoning topoisomerase II. This results in single and double stranded DNA breaks, which if severe enough leads to either necrotic or apoptotic cell death. …

Therapeutic Animal Camp For Children Affected By Cancer, Katie Fleck

Williams Honors College, Honors Research Projects

This research project looks at the therapeutic benefits of an animal camp for children touched by cancer. Animal assisted therapy techniques were used for children to connect with animals during a week long summer camp. The benefits of working with animals are discussed, as well as research on many therapeutic activities including reiki, labyrinth walking, zentangle drawing, yoga, and drumming. Past camp attendees were recorded and interviewed about their personal experiences at camp. Caregivers of campers were also interviewed, who shared about the positive impact camp had on their family. Multiple benefits were found for this type of camp in …

Synthesis And Characterization Of Imidazolium Salt Derivatives For Anti-Tumor Activity, Ryan W. Pearce

Williams Honors College, Honors Research Projects

Several aldehydes (butanal, pentanal, hexanal, 4-hydroxybenzaldehyde) were reacted with 1,3-bis(naphthalen-2-ylmethyl)-imidazolium bromide (1) to produce novel C² substituted imidazolium salts for the potential use against non-small cell lung cancer in humans. Compounds 2-(1-hydroxypentyl)-1,3-bis(naphthalen-2-ylmethyl)-imidazolium bromide (3) and 2-(1-hydroxyhexyl)-1,3-bis(naphthalen-2-ylmethyl)-imidazolium bromide (5) were successfully synthesized with structures supported by NMR and mass spectrometry. Characterization by ¹H NMR showed evidence of 1 in both compounds. The tumor cell growth inhibition of 3 against non-small cell lung cancer lines NCI-A549, NCI-H460, HCC827, and NCI-H1975 was tested and found to be comparable to cisplatin as measured by MTT assay. …

The Metabolomic Effects Of Metformin On Colon Cancer, Jennifer W. Harris

Theses and Dissertations--Clinical and Translational Science

Metformin is an oral biguanide that is prescribed to over 120 million people worldwide for the treatment of conditions including type II diabetes mellitus, polycystic ovarian syndrome, and gestational diabetes. This hypoglycemic agent is rapidly emerging as a potential cost-effective anti-oncogenic agent. Over the past decade multiple epidemiologic studies have consistently associated metformin with decreased cancer incidence and cancer-related mortality. More recently numerous preclinical and clinical studies have demonstrated anti-cancer effects of metformin, leading to the proposal of numerous clinical trials to better understand this drug and its mechanism of action.

Previously experts believed metformin primarily targeted AMP-activated protein kinase …

Acute Promyelocytic Leukemia As A Possible Source For Ajulemic Acid Binding, Brian Christopher Monk

Honors Theses

Acute promyelocytic leukemia (APL) is a cancer that affects bone marrow, the blood-forming tissue (of the body). This type of leukemia accounts for approximately 10% of acute myeloid leukemia (AML) cases. Normally this cancer is treated with a drug called all-trans retinoic acid (ATRA), but other variations of treatment do exist. The importance of this research is that APL cells express contains a receptor, retinoic acid receptor-a (RARa), which ajulemic acid (AJA) may bind to in order to induce apoptosis in Ewing sarcoma (ES), a pediatric bone cancer. Therefore, this research will focus on the ability of AJA to induce …

The Effect Of Cannabinoids On Triple Negative Breast Cancer Cells, Haley Dahl

Honors Theses

Triple Negative Breast Cancer (TNBC) is a difficult type of cancer to treat because it is negative for progesterone, estrogen, and HER-2 receptors. Because TNBC is negative for these three receptors, it does not respond to normal hormonal therapies. The purpose of my experiment is to see if different cannabinoids, compounds from the cannabis plants, could be used as alternative treatment options. These experiments employed three different cannabinoids: ajulemic acid, cannabidiol, and hemp oil. Cell viability was measured after 72 hours of treatment using a MTT assay. The results showed that the three cannabinoids could be used to effectively destroy …

Effects Of Cobalt On Dna Double Strand Break Repair-Deficient Cells, Sean Raph Ms

All Student Scholarship

Epidemiology studies of human workers exposed to particulate cobalt have found increased incidence of lung cancer. A hallmark of lung cancer, chromosome instability(CIN) manifests as either numerical or structural abnormalities, which are thought to result from unrepaired or miss-repaired DNA double strand breaks, homologous recombination (HR) and non homologous end joining (NHEJ). Previous studies have shown that HR protects cells against metal induced CIN while NHEJ does not. We investigated whether this outcome occurs for cobalt.

Are There Delays In Receipt Of Treatment Among Appalachian Kentucky Women With Breast Cancer, Huong Thi Thanh Luu

Theses and Dissertations--Public Health (M.P.H. & Dr.P.H.)

Background: Women living in rural and under-resourced Appalachian Kentucky may experience delays in receiving cancer treatment yet such delays have not been systematically evaluated. In this analysis, we hypothesize that women diagnosed with breast cancer who live in Appalachian Kentucky would be more likely to have a treatment delay compared to those living in other Kentucky regions and adjusting for individual measures of socioeconomic status.

Methods: In this cohort study, women included in the Kentucky Cancer Registry with a diagnosis of an incident, primary breast cancer in the prior 12 months were interviewed by phone (n=1,245; response rate 26.9%). Cox …

Rna Aptamers For Molecular Chaperones Hsp27 And Hsp90, Sathishkumar Kumar Munusamy

Legacy Theses & Dissertations (2009 - 2024)

Hsp90 and Hsp27 are members of the heat shock protein family of chaperones that perform multiple roles in cellular maintenance through protein folding and inhibition of apoptosis. They are abundantly expressed in cells and are over-expressed during conditions of stress. Hsp90 requires ATP for its chaperone function while Hsp27 self-associates into higher order oligomers enclosing its substrate. Their ability to interact with other proteins or with themselves lies at the heart of their mechanisms. The specific consequences of each of their interactions on global cellular health have not yet been fully discovered. The sheer diversity of proteins that interact with …

Prostate Cancer And Afro-Caribbean Men: Experiences, Perceptions, And Beliefs, Harold Evelyn Taitt

Walden Dissertations and Doctoral Studies

Despite the high incidence of prostate cancer (PC) amongst men of African descent, there is a paucity of qualitative data that explores how Afro-Caribbean men perceive their risk, susceptibility to, and management of this disease. This phenomenological study sought to explore and analyze beliefs about PC in a sample of Afro-Caribbean men who reside in the United States (U.S.). The research questions considered the perceptions, beliefs, and lived experiences of participants. The conceptual framework is a synthesis of the health belief model (HBM) and the theory of reasoned action (TRA), primarily because the TRA allows for a culturally-based relevance and …

Clinical And Pathologic Significance Of Integrin Α6Β4 Expression In Human Malignancies, Rachel L. Stewart

Theses and Dissertations--Clinical and Translational Science

Integrins are cellular adhesion molecules that bind cells to the extracellular matrix. The integrin α6β4, a receptor for laminins, is predominantly expressed on epithelial cells where it is present at the basal surface adjacent to the basement membrane. This integrin plays a critical role in maintaining normal cellular functions, yet has also been implicated in promoting invasion and metastasis in human malignancies. While overexpression of the integrin α6β4 has been detected in select human cancers, the clinical significance of integrin α6β4 expression in a number of malignancies has not been determined. The purpose of this study was to examine integrin …