Oncology Commons^™

Association Between Gastroduodenal Ulcer And Age Of Diagnosis Of Head And Neck, Gastroduodenal And Pancreatic Cancer, Rukevwe Madusor

Capstone Experience

Background: Cancer is the second leading cause of death in the United States and remains a major public health problem worldwide. Epidemiological studies have demonstrated that insulin like growth factor-1 (IGF-1) is linked to ulcers and most cancers. Although studies have investigated the role of IGF1 in ulcer healing and cancer pathogenesis, the link between ulcer and cancer remains unclear. Hence, we assessed the relationship between ulcers and cancers.

Methods: This study consists of a sample of 180 cancer patients obtain by convenience sampling who were seen at Nebraska Medicine and were enrolled in the integrated cancer repository for cancer …

Letter: When Less Is More: Dexamethasone Dosing For Brain Tumors, Minesh Mehta

Minesh Mehta

No abstract provided.

Prediction Of Anal Cancer Recurrence After Chemoradiotherapy Using Quantitative Image Features Extracted From Serial (18)F-Fdg Pet/Ct, Michael Chuong

Michael Chuong

No abstract provided.

Lack Of Efficacy Of The Neutropenic Diet In Decreasing Infections Among Cancer Patients: A Systematic Review, Muni Rubens, Anshul Saxena, Peter Mcgranaghan, Emir Veledar, Ana Viamonte Ros, Rupesh Kotecha

Rupesh Kotecha

No abstract provided.

Choking On Adenocarcinoma, Andre Sahakian Md, Rajesh Gulati Md

Internal Medicine

No abstract provided.

Prediction Of Anal Cancer Recurrence After Chemoradiotherapy Using Quantitative Image Features Extracted From Serial (18)F-Fdg Pet/Ct, Michael Chuong

All Publications

No abstract provided.

Nivolumab Induced Myasthenia Gravis, Elizabeth Henderson Md, Imad Ikhawn Md, Dharti R. Patel Md, Monicka Felix

Internal Medicine

No abstract provided.

Oxidative Phosphorylation: A Critical Feature And Novel Therapeutic Target In Melanoma Brain Metastases, Grant Fischer

Dissertations & Theses (Open Access)

We recently showed via RNA-sequencing (RNA-seq) analysis of clinical samples that melanoma brain metastases (MBMs) have higher expression of oxidative phosphorylation (OXPHOS) genes (including PPARGC1A or PGC1α) than patient-matched extracranial metastases (ECMs). Thus, the central hypothesis of this dissertation is that OXPHOS plays a critical role in the pathogenesis of MBMs.

RNA-seq analysis identified increased expression of OXPHOS genes in intracranial (ICr) vs. subcutaneous (SQ) xenografts of 4 different human melanoma cell lines. Increased OXPHOS in the ICr xenografts was confirmed by direct metabolite analysis and [U-¹³C]-glucose tracing analysis. Together, these studies indicate that the brain TME …

Tracking Treatment Response And Resistance To Parp Inhibition (Talazoparib) In Hereditary Pancreatic Cancer., Jennifer Goldstein

Dissertations & Theses (Open Access)

polyADP ribose polymerase (PARP) inhibitors are a class of drugs that block the PARP enzymes, involved in the repair of singe-stranded DNA breaks through the base excision repair pathway. PARP inhibition leads to replication-associated double stranded DNA breaks, which are repaired by homologous recombination (HR). In tumors with HR defects (i.e. BRCA mutants), there is a shift to error-prone DNA repair and subsequent genomic instability and cell death.

In 2014, Olaparib became the first FDA-approved PARP inhibitor for the treatment of BRCA-mutant ovarian cancer. In the phase III POLO (Pancreas cancer OLaparib Ongoing) trial presented at the American Society …

Segmental Distribution Of Hepatocellular Carcinoma Correlates With Microvascular Invasion In Liver Explants Undergoing Transplantation, Yasir Al-Azzawai, Eva Rouanet, Ryan J. Hendrix, Lidia Spaho, Hesham Malik, Deepika Devuni, Gyongyi Szabo, Graham Barnard

Gyongyi Szabo

Introduction: Microvascular invasion (MVI) in hepatocellular carcinoma (HCC) patients is a poor prognostic factor after liver transplantation and/or resection. Any correlation between MVI and segmental location of HCC has yet to be studied. Our aim is to evaluate the segmental location of HCC and any correlation with the presence of MVI, portal vein thrombosis (PVT) in explanted livers, and the recurrence of HCC after transplantation. Another objective of the study is to assess the treatment history (ablation or transarterial chemoembolization (TACE)) and size of the tumor with respect to the risk of MVI.

Methods: A single center, retrospective chart review, …

Survival And Prognostic Factors In Patients With Gastrointestinal Cancers And Brain Metastases: Have We Made Progress?, Michael Chuong, Minesh Mehta

Minesh Mehta

No abstract provided.

Management Of Patients With Brain Metastases From Non-Small Cell Lung Cancer And Adverse Prognostic Features: Multi-National Radiation Treatment Recommendations Are Heterogeneous, Minesh Mehta

Minesh Mehta

No abstract provided.

Occult Renal Cell Carcinoma Presenting As A Palpable Supraclavicular Virchow's Node, Luke Perry, Jandie Schwartz, Gus Slotman, Omar Al Ustwani, Nandini Kulkarni

Rowan-Virtua Research Day

Occult papillary renal cell carcinoma (RCC) is a rare disease process in which there is evidence of metastatic kidney cancer, but no primary kidney tumor can be found on physical exam or imaging. The papillary subtype of RCC accounts for 10-15% of RCC’s. These lesions infrequently present as occult disease. A Virchow’s node can be positive for multiple cancer types, most notably gastric cancer, but also gallbladder, pancreas, kidneys, testicular, and prostate cancer. We describe a case of occult papillary renal cell carcinoma diagnosed by biopsy of a Virchow’s node.

Recurrent Renal Cell Carcinoma Post Radical Nephrectomy: A Case Report, Amarnath Polepalle D.O., Neethi Dasu D.O., Adam Freilich D.O., Jayram Krishnan D.O.

Rowan-Virtua Research Day

This is a case of a 73-year-old Caucasian male presenting with an asymptomatic right adrenal mass.

Renal Cell Carcinoma (RCC) constitutes 80 to 85% of primary renal neoplasms. At presentation, up to 25% of patients with RCC will have evidence of metastases or locally advanced disease. [1] Patients will rarely present with any symptoms since the majority of patients are incidentally diagnosed due to radiologic procedures performed for other indications. RCC is considered the most lethal of urologic cancers because a patient without intervention who has stage IV metastatic disease has a 5-year survival rate of 23% in comparison to …

Atypical Presentation Of Stemi With Cardiac Tamponade Related To Malignancy, Matthew J. Johnson, Rohan Penmetcha

Rowan-Virtua Research Day

Cardiac tamponade and myocardial infarction are rare as the initial presentation of a malignancy. Here, we describe a case with an atypical presentation of a myocardial infarction due to a thrombus in the right coronary artery occurring in the setting of a pericardial effusion causing tamponade physiology related to malignancy. We present this unique case of myocardial infarction and cardiac tamponade as this was not caused by a type-A aortic dissection. In conclusion, we suggest that malignancy be considered in the differential diagnosis when these findings present together.

A Mathematical Investigation On Tumor-Immune Dynamics: The Impact Of Vaccines On The Immune Response, Jonathan Quinonez, Neethi Dasu, Mahboobi Qureshi

Rowan-Virtua Research Day

Mathematical models analyzing tumor-immune interactions provide a framework by which to address specific scenarios in regard to tumor-immune dynamics. Important aspects of tumor-immune surveillance to consider is the elimination of tumor cells from a host’s cell-mediated immunity as well as the implications of vaccines derived from synthetic antigen. In present studies, our mathematical model examined the role of synthetic antigen to the strength of the immune system. The constructed model takes into account accepted knowledge of immune function as well as prior work done by de Pillis et al. All equations describing tumor-immune growth, antigen presentation, immune response, and interaction …

A Rare Case Of A Non- Functioning Pancreatic Neuroendocrine Tumor, Yaser Khalid, Neethi Dasu, Richard Gordon

Rowan-Virtua Research Day

Pancreatic neuroendocrine tumors (PNET) are very rare and represent about 1–2% of all pancreatic tumors. Non-functional PNET (NF-PNET) is incidentally discovered in most cases. Most NF-PNETs are found at an advanced stage because patients are mostly asymptomatic. We present a case of 32-yr-old female who initially presented with increasing abdominal girth, decreased mobility, and lower extremity swelling up to the hip and was found to have an advanced NF-PNET with metastatic disease to the pelvis and liver. There have been few studies directed toward early detection and management; Computed tomography (CT) is the imaging modality of choice as well as …

Neuroblastoma In Adolescents And Children Older Than 10 Years: Unusual Clinicopathologic And Biologic Features, Laura Mccarthy, Katherine Chastain, Terrie Flatt, Eugenio Taboada, Robert E. Garola, John Herriges, Linda D. Cooley, Atif Ahmed

Posters

This poster describes four cases of neuroblastoma diagnosed since 2008 in children greater than 10 years and presents their clinical, histologic and biologic features, emphasizing unusual clinicopathologic characteristics and the role of DNA microarray analysis and Next Generation Sequencing in their management.

Gracilis Myocutaneous Flap For Perineal Defect Reconstruction After Left Hemivulvectomy For Locally Invasive Vulvar Cancer – A Case Report And A Literature Review, Nicolae Bacalbasa, Irina Balescu, Andreea Mereuta, Alina Tanase, Adriana Ghelmene, Mihaela Vilcu, Iulian Brezean

Journal of Mind and Medical Sciences

Performing radical surgery for locally advanced vulvar cancer is usually associated with the occurrence of large perineal defects. In order to provide a better healing process of the perineal wound, different reconstructive techniques have been proposed.

We present the case of a 63-year-old female patient diagnosed with locally advanced vulvar cancer for which a left hemivulvectomy with bilateral inguinal lymph node dissection was performed. After completion of the resection phase, the reconstruction with gracilis myocutaneous flap was performed. The patient developed a non-union of the flap. However, it slowly healed without any surgical re-intervention.

Gracilis myocutaneous flap seems to be …

Ten-Year Outcomes Of Moderately Hypofractionated (70 Gy In 28 Fractions) Intensity Modulated Radiotherapy For Localized Prostate Cancer, Rupesh Kotecha

Rupesh Kotecha

No abstract provided.

State Of The Art: The Evolving Role Of Rt In Combined Modality Therapy For Gbm, Minesh Mehta

Minesh Mehta

No abstract provided.

Health Effects Of A Vegan Diet And Pediatric Cancer Prevention, Lindsay Wisehart

Senior Honors Theses

Veganism is a diet which excludes consumption of all animal products. With proper planning and vitamin supplementation to ensure adequate intake of protein, fat, calcium, zinc, iron, and vitamins D and B12, a vegan diet is widely accepted as suitable for growing and developing children. The decreased levels of dairy, red and processed meats, fat, and protein, and increased levels of fruits and vegetables characteristic of a vegan diet have been shown to reduce risk of mortality and a number of diseases including adult and childhood cancer. Childhood cancer is the second leading cause of childhood death in Western society. …

Management Of Patients With Brain Metastases From Non-Small Cell Lung Cancer And Adverse Prognostic Features: Multi-National Radiation Treatment Recommendations Are Heterogeneous, Minesh Mehta

All Publications

No abstract provided.

Coordinating An Oncology Precision Medicine Clinic Within An Integrated Health System: Lessons Learned In Year One, Michael A. Thompson, Jennifer J. Godden, Deborah Wham, Antony Ruggeri, Michael P. Mullane, Amanda Wilson, Shamsuddin Virani, Scott M. Weissman, Brenda Ramczyk, Pamela Vanderwall, James L. Weese

Journal of Patient-Centered Research and Reviews

Precision medicine is a term describing strategies to promote health and prevent and treat disease based on an individual’s genetic, molecular, and lifestyle characteristics. Oncology precision medicine (OPM) is a cancer treatment approach targeting cancer-specific genetic and molecular alterations. Implementation of an OPM clinical program optimally involves the support and collaboration of multiple departments, including administration, medical oncology, pathology, interventional radiology, genetics, research, and informatics. In this review, we briefly introduce the published evidence regarding OPM’s potential effect on patient outcomes and discuss what we have learned over the first year of operating an OPM program within an integrated health …

Yoga-Specific Enhancement Of Quality Of Life Among Women With Breast Cancer: Systematic Review And Exploratory Meta-Analysis Of Randomized Controlled Trials, Daline El-Hashimi, Kevin M. Gorey

Social Work Publications

Physical activities during and after cancer treatment have favorable psychosocial effects. Increasingly, yoga has become a popular approach to improving the quality of life (QoL) of women with breast cancer. However, the extant synthetic evidence on yoga has not used other exercise comparison conditions. This meta-analysis aimed to systematically assess yoga-specific effects relative to any other physical exercise intervention (eg, aerobics) for women with breast cancer. QoL was the primary outcome of interest. Eight randomized controlled trials with 545 participants were included. The sample-weighted synthesis at immediate postintervention revealed marginally statistically and modest practically significant differences suggesting yoga’s potentially greater …

The Mitochondrial Deoxyguanosine Kinase Is Required For Cancer Cell Stemness In Lung Adenocarcinoma, Shengchen Lin, Chongbiao Huang, Jianwei Sun, Oana Bollt, Xiuchao Wang, Eric Martine, Jiaxin Kang, Matthew D. Taylor, Bin Fang, Pankaj K. Singh, John Koomen, Jihui Hao, Shengyu Yang

Journal Articles: Eppley Institute

The mitochondrial deoxynucleotide triphosphate (dNTP) is maintained by the mitochondrial deoxynucleoside salvage pathway and dedicated for the mtDNA homeostasis, and the mitochondrial deoxyguanosine kinase (DGUOK) is a rate-limiting enzyme in this pathway. Here, we investigated the role of the DGUOK in the self-renewal of lung cancer stem-like cells (CSC). Our data support that DGUOK overexpression strongly correlates with cancer progression and patient survival. The depletion of DGUOK robustly inhibited lung adenocarcinoma tumor growth, metastasis, and CSC self-renewal. Mechanistically, DGUOK is required for the biogenesis of respiratory complex I and mitochondrial OXPHOS, which in turn regulates CSC self-renewal through AMPK-YAP1 signaling. …

Mitochondrial Superoxide Disrupts The Metabolic And Epigenetic Landscape Of Cd4, Cassandra M. Moshfegh, Christopher W. Collins, Venugopal Gunda, A. Vasanthakumar, J. Z. Cao, Pankaj K. Singh, L. A. Godley, Adam J. Case

Journal Articles: Eppley Institute

While the role of mitochondrial metabolism in controlling T-lymphocyte activation and function is becoming more clear, the specifics of how mitochondrial redox signaling contributes to T-lymphocyte regulation remains elusive. Here, we examined the global effects of elevated mitochondrial superoxide (O₂^-) on T-lymphocyte activation using a novel model of inducible manganese superoxide dismutase (MnSOD) knock-out. Loss of MnSOD led to specific increases in mitochondrial O₂^- with no evident changes in hydrogen peroxide (H₂O₂), peroxynitrite (ONOO^-), or copper/zinc superoxide dismutase (CuZnSOD) levels. Unexpectedly, both mitochondrial and glycolytic metabolism showed significant reductions …

Selective Inhibition Of Histone Deacetylases 1/2/6 In Combination With Gemcitabine: A Promising Combination For Pancreatic Cancer Therapy, Richard S. Laschanzky, Lisa E. Humphrey, Jihyun Ma, Lynette M. Smith, Thomas J. Enke, Surendra K. Shukla, Aneesha Dasgupta, Pankaj K. Singh, Gillian M. Howell, Michael G. Brattain, Quan P. Ly, Adrian R. Black, Jennifer D. Black

Journal Articles: Eppley Institute

Pancreatic ductal adenocarcinoma (PDAC) has a five-year survival rate of <10% due in part to a lack of effective therapies. Pan-histone deacetylase (HDAC) inhibitors have shown preclinical efficacy against PDAC but have failed in the clinic due to toxicity. Selective HDAC inhibitors may reduce toxicity while retaining therapeutic efficacy. However, their use requires identification of the specific HDACs that mediate the therapeutic effects of HDAC inhibitors in PDAC. We determined that the HDAC1/2/3 inhibitor Mocetinostat synergizes with the HDAC4/5/6 inhibitor LMK-235 in a panel of PDAC cell lines. Furthermore, while neither drug alone synergizes with gemcitabine, the combination of Mocetinostat, LMK-235, and gemcitabine showed strong synergy. Using small interfering (si)RNA-mediated knockdown, this synergy was attributed to inhibition of HDACs 1, 2, and 6. Pharmacological inhibition of HDACs 1 and 2 with Romidepsin and HDAC6 with ACY-1215 also potently synergized with gemcitabine in a panel of PDAC cell lines, and this drug combination potentiated the antitumor effects of gemcitabine against PDAC xenografts in vivo. Collectively, our data show that inhibition of multiple HDACs is required for therapeutic effects of HDAC inhibitors and support the development of novel strategies to inhibit HDACs 1, 2, and 6 for PDAC therapy.

Fascin Controls Metastatic Colonization And Mitochondrial Oxidative Phosphorylation By Remodeling Mitochondrial Actin Filaments, Shengchen Lin, Chongbiao Huang, Venugopal Gunda, Jianwei Sun, Srikumar P. Chellappan, Zengxun Li, Victoria Izumi, Bin Fang, John Koomen, Pankaj K. Singh, Jihui Hao, Shengyu Yang

Journal Articles: Eppley Institute

The deregulation of the actin cytoskeleton has been extensively studied in metastatic dissemination. However, the post-dissemination role of the actin cytoskeleton dysregulation is poorly understood. Here, we report that fascin, an actin-bundling protein, promotes lung cancer metastatic colonization by augmenting metabolic stress resistance and mitochondrial oxidative phosphorylation (OXPHOS). Fascin is directly recruited to mitochondria under metabolic stress to stabilize mitochondrial actin filaments (mtF-actin). Using unbiased metabolomics and proteomics approaches, we discovered that fascin-mediated mtF-actin remodeling promotes mitochondrial OXPHOS by increasing the biogenesis of respiratory Complex I. Mechanistically, fascin and mtF-actin control the homeostasis of mtDNA to promote mitochondrial OXPHOS. The …

Human Islet Response To Selected Type 1 Diabetes-Associated Bacteria: A Transcriptome-Based Study, Ahmed M. Abdellatif, Heather Jensen Smith, Robert Z. Harms, Nora Sarvetnick

Journal Articles: Eppley Institute

Type 1 diabetes (T1D) is a chronic autoimmune disease that results from destruction of pancreatic β-cells. T1D subjects were recently shown to harbor distinct intestinal microbiome profiles. Based on these findings, the role of gut bacteria in T1D is being intensively investigated. The mechanism connecting intestinal microbial homeostasis with the development of T1D is unknown. Specific gut bacteria such as Bacteroides dorei (BD) and Ruminococcus gnavus (RG) show markedly increased abundance prior to the development of autoimmunity. One hypothesis is that these bacteria might traverse the damaged gut barrier, and their constituents elicit a response from human islets that causes …