Medical Pathology Commons^™

Yap And The Hippo Pathway In Pediatric Cancer., Atif Ahmed, Abdalla D. Mohamed, Melissa Gener, Weijie Li, Eugenio Taboada

Manuscripts, Articles, Book Chapters and Other Papers

The Hippo pathway is an important signaling pathway that controls cell proliferation and apoptosis. It is evolutionarily conserved in mammals and is stimulated by cell-cell contact, inhibiting cell proliferation in response to increased cell density. During early embryonic development, the Hippo signaling pathway regulates organ development and size, and its functions result in the coordinated balance between proliferation, apoptosis, and differentiation. Its principal effectors, YAP and TAZ, regulate signaling by the embryonic stem cells and determine cell fate and histogenesis. Dysfunction of this pathway contributes to cancer development in adults and children. Emerging studies have shed light on the upregulation …

Immunodeficiency-Associated Lymphoid Hyperplasia As A Cause Of Intussusception In A Case Of Activated Pi3k-Δ Syndrome., Daniel Mettman, Isabelle Thiffault, Chitra Dinakar, Carol J. Saunders

Manuscripts, Articles, Book Chapters and Other Papers

Activated PI3K-δ syndrome refers to a recently described primary immunodeficiency syndrome consisting of recurrent sinopulmonary infections, lymphadenopathy, mucosal lymphoid aggregates, increased susceptibility to Epstein-Barr virus and cytomegalovirus, and increased incidence of B-cell lymphomas. Variants in PIK3CD, which encodes the phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit delta isoform, enhance membrane association and kinase activity, resulting in increased signal transduction through the PI3K-Akt pathway. Whole-exome sequencing revealed a pathogenic PIK3CD variant in a patient with history of immunologic impairment, recurrent sinopulmonary infections, and lymphoid hyperplasia presenting as intussusception. This case illustrates that while lymphoid hyperplasia secondary to immunodeficiency is most often unsurprising and …

The Pathogenesis Of Natural Killer/T Cell Lymphoma, Bei Jiang

Theses & Dissertations

Extranodal natural killer/T-cell lymphomas (NKTCL) are uncommon lymphomas with poor prognosis. In order to gain a better understanding of the molecular pathogenesis of NKTCL, we obtained and compared the global gene expression profile, global somatic mutation profile, and global methylation profile of normal NK cells, malignant NK cell lines, and NKTCL patient samples. We showed that the JAK-STAT pathway was constitutively activated in NKTCL through the cooperation between activation of signal transducer and activator of transcription proteins (STATs) via activating mutations and inactivation of STAT suppressor protein suppressor of cytokine signaling 6 (SOCS6) through promoter hypermethylation. Activating STAT3 and STAT5B …

Hepatic Fibrosis And Immune Phenotype Vary By Hcv Viremia In Hcv/Hiv Co-Infected Subjects: A Women's Interagency Hiv Study., Seema N Desai, Jennifer L Dodge, Alan L Landay, Marshall J Glesby, Patricia S. Latham, Maria C Villacres, Audrey L French, Stephen J Gange, Ruth M Greenblatt, Marion G Peters

Pathology Faculty Publications

HCV and HIV independently lead to immune dysregulation. The mechanisms leading to advanced liver disease progression in HCV/HIV coinfected subjects remain unclear.

In this cross-sectional study, we assessed the association of HCV viremia, liver fibrosis, and immune response patterns in well-characterized HIV phenotypes: Elite controllers (Elites), HIV controlled (ARTc), and HIV uncontrolled (ARTuc) matched by age and race. Groups were stratified by HCV RNA status. Regulatory T-cell frequencies, T-cell activation (HLADR+CD38+), apoptosis (Caspase-3+), and intracellular cytokines (interferon-γ, IL-2, IL-17) were assessed using multiparametric flow-cytometry. Liver fibrosis was scored by AST to platelet ratio index (APRI).

We found liver fibrosis (APRI) …

Routine Screening For Abdominal Aortic Aneurysm: Is It For Everyone?, Catherine E. Nowak

Physician Assistant Capstones, 2016 to 2019

Objective: Determine whether routine abdominal ultrasound screening in all men ages 65 and over, not just those who are symptomatic or at risk, would be beneficial in reducing the mortality rate from abdominal aortic aneurysms (AAA). Design: Systematic literature review. Methods: The clinical question investigated is whether routine ultrasound screening of AAA for men over age 65 reduces AAA-related mortality as compared to not routinely screening. Searches were done through PubMed using the keywords: screening, abdominal aortic aneurysm, reduce, and mortality. Citations used by the USPSTF AAA screening guidelines were also added to the literature search. In PubMed, further limitations …

The Hormonal Regulation Of The Claudin Genes In The Ovary, Sean Gadson, April Binder, Kenneth Korach, Katherine Hamilton

All Master's Theses

The ovary is a dynamic organ that responds to many hormonal signals. When these hormonal signals are disrupted, ovarian dysfunction can occur. One such example is Polycystic Ovarian Syndrome (PCOS). PCOS patients suffer from high levels of testosterone. Excess testosterone may misregulate genes in the ovary and disrupt ovarian function. The Claudin (Cldn) 3 and Cldn11 genes have been shown to be regulated by androgens in the testis, while studies in ovarian cancer cells suggests a coregulatory mechanism for the expressions of Cldn3 and Cldn4 in the ovary. The objective of this study was to characterize the hormonal …

Perceptions And Attitudes Of A Sample Of Primary Care Patients Receiving Psychological Care From Their Pcp, Nadine Henzes Gowarty

PCOM Psychology Dissertations

With millions of Americans suffering from a mental health disorder and slightly more than half receiving treatment, the demand for psychological services far outweighs the number of practitioners available to provide direct care. Therefore, the majority of all primary-care visits are based on psychosocial factors; one third of a PCP’s caseloads consist of patients with mental-health problems. Given the fact that PCPs provide comprehensive psychosocial care, it is important to determine the beliefs and perceptions of their patients. Results from this study identified numerous factors that influence the relationship between patients receiving mental health care from their PCP. Specifically, if …

Cross-Sectional Survey Of Relevant Literatures As To The Current Proposed Disease Mechanisms And Treatments Of Amyotrophic Lateral Sclerosis (Als), Zachary Sanford

Marshall Journal of Medicine

Amyotrophic Lateral Sclerosis (ALS), more commonly referred to as Lou Gehrig’s disease, is a progressively degenerative neuromuscular disorder affecting both the upper and lower motor neurons and preferentially affecting males in their forties to seventies. Although the pathology of ALS has been clearly elucidated elsewhere, the precise mechanisms by which the disease progresses and the means by which it is acquired are still poorly understood areas of medicine. Current genomic and proteomic studies in human and animal models have yielded exciting and promising new findings that may help elucidate this pathology. It is the purpose of this review article to …

Myasthenia Gravis, Abbe R. Feaver

Nursing Student Class Projects (Formerly MSN)

Myasthenia gravis (MG) is a chronic autoimmune neuromuscular disease characterized by ocular, bulbar, facial, and skeletal muscle weakness due to a defect in the transmission of nerve to muscle impulses at the neuromuscular junction (Mestecky, 2013, p. 110). Approximately 14-20 in 100,000 people are diagnosed with myasthenia gravis in the United States (Leis, Moore, Kofler, Beric, De Visser, 2014, p. 112). Typically, diagnosis occurs in middle-aged adults with women generally acquiring the disease at a younger age than men (Mestecky, 2013, p. 110). MG has the potential to greatly affect the quality of life of a patient. Although the disease …

Neurocysticercosis, Abigail Hill

Nursing Student Class Projects (Formerly MSN)

Neurocysticercosis (NCC) is one of the most common parasitic infections of the central nervous system in humans and is the most serious clinical manifestation of cysticercosis. NCC is caused by the ingestion of the larval form of the pork tapeworm Taenia solium. NCC is endemic in low income developing countries where pigs are commonly raised, including the countries of Central America, South America, and parts of Africa and Asia. (Naddaf, Seeger, & Stafstrom, 2014). The parasite Taenia solium encysts in the brain and can express a broad range of symptoms including seizures, headache, hydrocephalus, encephalitis, stroke and mental health and …

Prevalence Of Sepsis In Pediatric Populations, Brittany Barnes

Nursing Student Class Projects (Formerly MSN)

Sepsis and more specifically septic shock in the pediatric population is a diagnosis that is full of complexities. There are instances where a neutropenic oncology patient observes a better outcome than a previously healthy patient who is suffering from the same pathogen related sepsis. Sepsis is the 10th leading cause of death according to the Center for Disease Control and Prevention, and each year between 20,000 and 42,000 children are diagnosed with severe sepsis (Riley & Wheeler, 2012). Even with significant advances in medical treatment, sepsis is still associated with high morbidity and mortality rates. A retrospective study of patient …

Marfan Syndrome In Athletes, Chelsey Hastings

Nursing Student Class Projects (Formerly MSN)

Genetic disorders are widely misunderstood in our society and can lead to early mortality. Marfan syndrome (MFS) is a genetic disorder that affects connective tissue (Harris, Croce, & Tian, 2014). Antoine Marfan, a French pediatrician, first described this disease in 1896 (Elshershari & Harris, 2014). MFS can manifest in several different organ systems. The cardiovascular complications of aortic dilation and dissection often account for the morbidity associated with this disease (Harris et al., 2014). Understanding the inheritance, pathophysiology, and treatment of MFS is important for the advanced practice nurse (APN). Prevalence of the disease is approximately two per 10,000 individuals, …

Granulomatosis With Polyangiitis (Wegner’S) : Often Mistaken For Tuberculosis, Dawn Palumbo

Nursing Student Class Projects (Formerly MSN)

The exact cause of GPA has yet to be identified. Dinić et al. (2013) defines GPA/WG as “anti-neutrophil cytoplasmic antibodies (ANCAs)- associated systemic vasculitis of unknown etiology” (p. 887). According to Alam, Dastider, Ahmed, and Rabbani (2012) both cellular and humoral immunity are thought to be involved in the pathogenesis of wegener’s granulomatosis. “ The initial pathologic lesion is granuloma believed to be caused by cellular immune process. The strong association on C-ANCA with this disease suggests the role of humoral immunity” (Alam et al., 2014, p. 98). Huang et al. (2013) suggest, “The main pathological features of limited Wegeners’ …

Basal Cell Carcinoma—A Preventable Disease, Jamie Weaver

Nursing Student Class Projects (Formerly MSN)

Basal cell carcinoma (BCC) is a nonmelanoma skin cancer. According to the Skin Cancer Foundation, “BCC is the most frequently occurring form of all skin cancers. More than one out of every three new cancers is a skin cancer, and the vast majority are BCC’s” (www.skincancer.org). Exposure to ultraviolet (UV) rays is one of the main risk factors in developing a BCC. People with a lighter skin tone are at a higher risk of developing a BCC than those with a darker skin tone.

Nash: Non-Alcoholic Steatohepatitis, Jennifer Heck

Nursing Student Class Projects (Formerly MSN)

Non-alcoholic fatty liver disease (NAFLD) is a chronic liver disease which refers to the presence of hepatic steatosis without significant intake of alcohol. Non-alcoholic fatty liver disease develops in a variety of forms from reversible simple steatosis to non-alcoholic steatohepatitis (NASH), which if left unchecked can progress to liver fibrosis, cirrhosis and even develop into hepatocellular carcinoma (Mells et al., 2014). NAFLD is thought to be nonthreatening, but with progression over several years could lead to NASH. A strong link between obesity and NASH has been shown. In addition to obesity, insulin resistance (type II diabetes mellitus), and hyperlipidemia all …

Non-Valvular Atrial Fibrillation And Stroke: Novel Oral Anticoagulants Versus Vitamin K Antagonists, Kathryn A. Viglietta

Nursing Student Class Projects (Formerly MSN)

Atrial fibrillation (afib) is the most common sustained cardiac arrhythmia and second most common cardiovascular condition in adults in the United States (Zarraga & Kron, 2012). •2.2 million affected, increases risk of stroke 4 to 6 times (National Institute of Neurological Disorders and Stroke [NINDS], 2015). •Vitamin K antagonists (VKAs) have been mainstay of therapy for over 60 years (King, Holley& Moores, 2013). •Limitations with VKAs such as variability in response, need for frequent lab draws, food and drug interactions which decrease patients adherence and under prescribing by physicians (Halperin & Goyette, 2012). •Novel oral anticoagulants (NOACs) have been approved …

Gout, Lorrie Listebarger

Nursing Student Class Projects (Formerly MSN)

Gout is a syndrome caused by an inflammatory response creating an over production of uric acid increasing uric acid levels in the blood and body fluids. Gout is defined as a disorder resulting from tissue deposition of MSU crystals (in joints, bursae, bone, and certain other soft tissues, such as ligaments, tendons and occasionally, skin) and/or crystallization of uric acid within the renal collecting system (tubules and renal pelvis) that typically occurs in acid urine” (Terkeltaub & Edwards, 2013, p. 20). Gout is among the oldest diseases affecting approximately 3.9% of adults in America (Terkeltaub & Edwards, 2013, p. xv). …

Diabetic Ketoacidosis, Mario Bianconi

Nursing Student Class Projects (Formerly MSN)

According to “Statistics About Diabetes” (2014), in 2012, 29.1 million Americans, or 9.3% of the population, had diabetes. Additionally, of the 29.1 million, 21 million of the population were diagnosed, and 8.1 million were undiagnosed. With such a high prevalence, it is imperative that the hospital nurse is aware not only how to treat diabetes, but also how to look for complications of diabetes. One of the severe complications of diabetes is Diabetic Ketoacidosis, or DKA. DKA occurs as a result of prolonged untreated diabetes. It is the result of the body not being able to produce, or use, insulin …

Neuroleptic Malignant Syndrome: A Pathophysicological Dilemma, Samantha Davis

Nursing Student Class Projects (Formerly MSN)

Neuroleptic malignant syndrome (NMS) is a rare disease occurring from an adverse reaction to anti-psychotic use. The diagnosis and predictability of the disease is extremely difficult as it mimics other syndromes (Margetić & Aukst-Margetić, 2010). The disease onset can occur when initiating medications, escalating doses, or adding an adjunctive anti-psychotic to the regimen. Although causing the unpredictability, the disease can occur at any dose (Paul, Michael, John, & Lenox, 2012). Further increasing the difficulty of diagnostics, signs and symptoms are very wide spread. The Diagnostic and Statistical Manual of Mental Disorders created a tool to assist in the clinical setting; …

Raynaud’S Phenomenon, Sarah Gasper

Nursing Student Class Projects (Formerly MSN)

Raynaud’s phenomenon (RP) is a widely prevalent clinical disorder commonly seen in outpatient settings. It is characterized by episodic vasospastic attacks of the digital arteries and arterioles that limit blood flow to the extremities, causing severe pain. Temperature changes and stress are the primary triggers that exacerbate this disease. The classic biphasic color changes of RP are pallor, cyanosis, and erythema and commonly affect the fingers and toes and more rarely, the nose, nipples, ears, lips, and penis. RP is divided into subcategories. Primary Raynaud’s phenomenon (PRP) is when no underlying medical disease exists and the condition happens spontaneously. It …

Polycystic Ovarian Syndrome, Tameka Todd

Nursing Student Class Projects (Formerly MSN)

The main goal of this project was to educate peers on the pathophysiology of a disease or disorder of choice. The topic to be discussed is Polycystic Ovarian Syndrome (PCOS). This topic was chosen based on personal interest in women’s health issues. PCOS is a metabolic disease affecting 5-10 percent of women of childbearing age (Morgan, 2013). Characteristics of PCOS include enlarged ovaries consisting of multiple small cysts surrounding the outer ovary, with unknown cause (Morgan, 2013). Leading to the ovaries producing an increased amount of androgen (male hormones) (Morgan, 2013).

Multiple Sclerosis And The Implications Of Anesthesia, Timothy B. Maiden

Nursing Student Class Projects (Formerly MSN)

Multiple Sclerosis (MS) is an autoimmune process characterized by inflammation and demyelination of axons in the brain and spinal cord (Schneider, 2005). According to Maclean (2010), MS is one of the most common debilitating neurological disorders in young adults. My intent of this research project is to explain the pathophysiological process and become familiar with the implications of anesthesia related to MS. This research will enable me to prepare a safe, individualized anesthetic plan, taking all essential precautions when caring for a patient with multiple sclerosis.

Chagas Disease: Immigrating Into The United States, Angela Metzger

Nursing Student Class Projects (Formerly MSN)

Chagas Disease is starting to make a profound entrance into our communities within the United States. The influx of the immigrant population is the principal cause of the accumulation in the number of reported cases. (Center for Disease Control and Prevention, 2014). The Trypanosoma cruzi is a parasite that causes Chagas disease. The triatomine blood sucking insect enjoys the mucosal membranes of their pray, both humans and animals. The most common regions of the penetrating bite are the conjunctiva of the eye or around the mouth. It is through the feces of the vector entering the inoculation site that initiates …

Exploring The Pathophysiological Concepts Of Ebola Virus, Andrew T. Wasson

Nursing Student Class Projects (Formerly MSN)

The Ebola virus is a member of the filoviridae family. Five distinctive species of ebolavirus have been identified, four of which are known to cause disease in humans (Martines, Ng, Greer, Rollin, and Zaki, 2014). The specific species known to cause disease in humans are Zaire, Sudan, Ivory Coast, and Bundibugyo (Bray & Chertow, 2014). Bah et al. (2015) report that the Zaire ebolavirus (EBOV) was the cause of the most recent West African outbreak and carries the highest human mortality rate among the five known species, with up to 90% of cases being fatal. Ebola is a filamentous, enveloped, …

Maggot Therapy For Treating Diabetic Foot Ulcers, Amber Nikolaus

Nursing Student Class Projects (Formerly MSN)

Diabetes mellitus, Type 1 and Type 2, are associated with numerous debilitating consequences. One of the most common and serious complication is diabetic foot ulcers (DFU) (Baltzis, Elftheriadou, and Veves, 2014, p.817). DFUs are “caused by loss of glycemic control, peripheral neuropathy, peripheral vascular disease, and immunosuppression” and account for greater than 80,000 amputations per year in the United States (Aumiller & Dollahite, 2015, p.28). Approximately 15% of people with diabetes have diabetic foot ulcers (Aumiller & Dollahite, 2015, p.28) and studies demonstrate that 45% to 55% of patients presenting with neuropathic and ischemic diabetic foot ulcers will die within …

Chikungunya Virus: More Than A Mosquito Bite, Abigail Shaw

Nursing Student Class Projects (Formerly MSN)

Chikungunya fever is a viral infection caused by the Chikungunya virus (CHIKV). Although seldom fatal, CHIKV causes high fevers, polyarthralgia, and rash. The mosquito-borne virus has spread rapidly in the last ten years, causing over three million cases of CHIKV worldwide (Powers, 2015). The recent outbreak initiated in Africa and the islands of the Indian Ocean in 2004 has quickly spread to Asia, Europe and the Americas (CDC, 2015). According to the CDC (2015), until 2014, cases in the United States had only been linked to foreign travel outside of the Americas. As the outbreak has grown, cases of local …

Identifying Acute Organ Dysfunction As A Marker Of Severe Sepsis, Daniell Mcsweeney

Nursing Student Class Projects (Formerly MSN)

The current definition of sepsis is suspected or documented infection plus at least one systemic manifestation of infection. Severe sepsis has been defined as sepsis plus evidence of organ dysfunction. Identifying acute organ dysfunction is a marker of severe sepsis. This topic was chosen after witnessing a number a patients fall into septic shock before severe sepsis was diagnosed and treatment initiated. Diagnosis of severe sepsis is important for specific protocol to be implemented in a timely fashion. The current differentiation between sepsis and severe sepsis is evidence of organ dysfunction. There are many examples of organ dysfunction that are …

Raising Awareness: Polycystic Kidney Disease, Dana Dendinger

Nursing Student Class Projects (Formerly MSN)

A young male patient was recently admitted to the intensive care unit at a local hospital with hypertensive urgency and acute renal failure of unknown etiology. A renal ultrasound showed polycystic kidneys and upon further investigation, it was discovered that the patient’s mother passed away last year from end stage renal failure related to polycystic kidney disease (PKD). The aforementioned case and the recent study into inherited disorders are what prompted further investigation into PKD. Liebau and Serra (2013) explain that “inherited cystic kidney diseases, autosomal dominant polycystic kidney disease (ADPKD) and autosomal recessive polycystic kidney disease (ARPKD), are the …

Juvenile Myoclonic Epilepsy, April Britton

Nursing Student Class Projects (Formerly MSN)

Juvenile myoclonic epilepsy (JME) is one of the most common epilepsies of childhood (Korff, Nordli, & Eichler, 2014). JME typically occurs in otherwise healthy teenagers, and is characterized by one or more of the following seizure types: myoclonic jerks, generalized tonic clonic seizures, and absence seizures (Korff, Nordli, & Eichler, 2014). JME is thought to have genetically mediated factors (Park, Shahid, & Jammoul, 2015). JME is considered to be gender equal (Korff, Nordli, & Eichler, 2014). Most JME patients are diagnosed between 12 and 18 years of age (Korff, Nordli, & Eichler, 2014). Triggers linked to onset of seizure activity …

Thrombotic Thrombocytopenia Purpura, Ann Oliva

Nursing Student Class Projects (Formerly MSN)

Patients with Thrombotic Thrombocytopenia Purpura, or TTP, are often times seen in the emergency department and subsequently admitted to the inpatient or the critical care unit. The problems that TTP patients can present with vary greatly and astute nursing assessment plus knowledge of the pathophysiology behind the diagnosis is vital to deliver excellent nursing care. Thrombotic Thrombocytopenia Purpura or TTP is a rare but potentially fatal condition that occurs as result of decreased levels of ADAMTS-13, a cleaving protease for von Willebrand factor (vWF), which causes platelet aggregation and microvascular thrombi and subsequent end-organ damage, along with thrombocytopenia, hemolytic anemia, …