Digital Commons Network^™

Emotional Enhancement And Repetition Effects During Working Memory In Persons With Mild Cognitive Impairment, Lucas S. Broster

Theses and Dissertations--Clinical and Translational Science

This dissertation introduces a framework for understanding differences in how emotional enhancement effects might influence memory in aging adults and then summarizes the findings of three studies of how repetition effects and emotional enhancement effects influence working memory in older adults without cognitive impairment (NC), older adults with amnestic mild cognitive impairment (MCI), and older adults with mild Alzheimer’s disease (AD). In these experiments, individuals with AD showed cognitive impairment in terms of accuracy and reaction time, but individuals with MCI showed milder behavioral impairment that was confined to manipulations of working memory. Individuals with AD showed relative sparing of …

Pseudomonas Aeruginosa-Induced Bleb-Niche Formation In Epithelial Cells Is Independent Of Actinomyosin Contraction And Enhanced By Loss Of Cystic Fibrosis Transmembrane-Conductance Regulator Osmoregulatory Function, Amber L. Jolly, Desire Takawira, Olufolarin O. Oke, Sarah A. Whiteside, Stephanie W. Chang, Emily R. Wen, David J. Evans

Faculty Publications & Research of the TUC College of Pharmacy

The opportunistic pathogen Pseudomonas aeruginosa can infect almost any site in the body but most often targets epithelial cell-lined tissues such as the airways, skin, and the cornea of the eye. A common predisposing factor is cystic fibrosis (CF), caused by defects in the cystic fibrosis transmembrane-conductance regulator (CFTR). Previously, we showed that when P. aeruginosa enters epithelial cells it replicates intracellularly and occupies plasma membrane blebs. This phenotype is dependent on the type 3 secretion system (T3SS) effector ExoS, shown by others to induce host cell apoptosis. Here, we examined mechanisms for P. aeruginosa-induced bleb formation, focusing on its …

Climate, Environmental And Socio-Economic Change: Weighing Up The Balance In Vector-Borne Disease Transmission, Paul E. Parham, Joanna Waldock, George K. Christophides, Deborah Hemming, Folashade Agusto, Katherine J. Evans, Nina Fefferman, Holly Gaff, Abba Gumel, Shannon Ladeau

Biological Sciences Faculty Publications

Arguably one of the most important effects of climate change is the potential impact on human health. While this is likely to take many forms, the implications for future transmission of vector-borne diseases (VBDs), given their ongoing contribution to global disease burden, are both extremely important and highly uncertain. In part, this is owing not only to data limitations and methodological challenges when integrating climate-driven VBD models and climate change projections, but also, perhaps most crucially, to the multitude of epidemiological, ecological and socio-economic factors that drive VBD transmission, and this complexity has generated considerable debate over the past 10-15 …

Is Sofosbuvir Safer And More Effective Than Peginterferon For Treatment Of Chronic Hepatitis C Virus Infection In Treatment-Naïve Patients?, Nicole L. Luongo

PCOM Physician Assistant Studies Student Scholarship

Objective: The objective of this selective EBM review is to determine whether or not Sofosbuvir plus Ribavirin is safer and more effective than Peginterferon plus Ribavirin for treatment of chronic Hepatitis C Virus infection in treatment-naïve patients.

Study Design: Systematic review of three English language primary studies, published in 2013.

Data Sources: Three randomized control trials, two of which are open-label, activecontrolled and one that is double-blind, placebo-controlled, comparing Sofosbuvir and Ribavirin versus other chronic HCV modalities found via PubMed in peer-reviewed journals.

Outcomes Measured: Safety was measured by self-reported adverse events, routine laboratory tests, physical exams, vital signs, and …

Does Balneotherapy Effectively Reduce Non-Specific Chronic Low Back Pain In Adults?, Jenna Srebnik

PCOM Physician Assistant Studies Student Scholarship

OBJECTIVE: The objective of this selective EBM review is to determine whether or not balneotherapy effectively reduces non-specific chronic low back pain in adults.

STUDY DESIGN: Review of three single blind, follow up randomized controlled trials (RCT), published in 2012 and 2005.

DATA SOURCES: Three peer reviewed RCTs were found using PubMed and all compared balneotherapy against various control groups.

OUTCOMES MEASURED: Low back pain of patients was assessed using dose of analgesic consumed, visual analog pain scale (VAS) and Oswestry Low Back Pain Disability Questionnaire (OSWDQ). The tools used to assess significance of outcomes measured were Pvalues, change in …

The Effects Of Vitamin D Supplementation On Influenza, Jonah M. Spoerndle

Williams Honors College, Honors Research Projects

Recently the role of vitamin D in other non-classical capacities has been evaluated. One of these non-classical vitamin D roles is assisting in maintaining proper immune system health. One disease that has a great effect on the immune system is influenza. Vitamin D helps to prevent and limit influenza by moderating the inflammatory cytokines as well as promoting the production of monocytes that help destroy the invading materials. Through the use of vitamin D supplementation the recommended daily amount of vitamin D can be assured and optimal health could be achieved. The purpose of this project was to design a …

Novel Interventions For Hiv Self-Management In African American Women: A Systematic Review Of Mhealth Interventions, Kimberly Adams Tufts, Kaprea F. Johnson, Jewel Goodman Shepherd, Juyoung Lee, Muna S. Bait Ajzoon, Lauren B. Mahan, Miyoung Kim

Ellmer School of Nursing Faculty Publications

The purpose of this systematic review was to assess the quality of interventions using mobile health (mHealth) technology being developed for and trialed with HIV-infected African American (AA) women. We aimed to assess rigor and to ascertain if these interventions have been expanded to include the broad domain of self-management. After an extensive search using the PRISMA approach and reviewing 450 records (411 published studies and 39 ongoing trials atclinicaltrials.gov), we found little completed research that tested mHealth HIV self-management interventions for AA women. Atclinicaltrials.gov, we found several mHealth HIV intervention studies designed for women in general, forecasting a promising …

Taxonomy And Molecular Epidemiology Of Echinococcus Granulosus Sensu Lato, Thomas Romig, Dennis Ebi, Marion Wassermann

Harold W. Manter Laboratory of Parasitology: Library Materials

Echinococcus granulosus, formerly regarded as a single species with a high genotypic and phenotypic diversity, is now recognized as an assemblage of cryptic species, which differ considerably in morphology, development, host specificity (including infectivity/pathogenicity for humans) and other aspects. This diversity is reflected in the mitochondrial and nuclear genomes and has led to the construction of phylogenetic trees and hypotheses on the origin and geographic dispersal of various taxa. Based on phenotypic characters and gene sequences, E. granulosus (sensu lato) has by now been subdivided into E. granulosus sensu stricto (including the formerly identified genotypic variants G1-3), …

Evolution Of Hematophagous Habit In Triatominae (Heteroptera: Reduviidae), Fernando Otálora-Luna, Antonio J. Pérez-Sánchez, Claudia Sandoval, Elis Aldana

Harold W. Manter Laboratory of Parasitology: Library Materials

All members of Triatominae subfamily (Heteroptera: Reduviidae), potential vectors of Trypanosoma cruzi, etiologic agent of the Chagas disease, feed on blood. Through evolution, these bugs have fixed special morphological, physiological, and behavioral aptations (adaptations and exaptations) adequate to feed on blood. Phylogeny suggests that triatomines evolved from predator reduvids which in turn descended from phytophagous hemipterans. Some pleisiomorphic traits developed by the reduvid ancestors of the triatomines facilitated and modeled hematophagy in these insects. Among them, mouthparts, saliva composition, enzymes, and digestive symbionts are the most noticeable. However, the decisive step that allowed the shift from predation to hematophagy …

Tuberculosis As A Metaphor For Isolation: An Interdisciplinary Examination Of Tuberculosis, Stefanie Pavlick 15

Honor Scholar Theses

No abstract provided.

Altered Intraerythrocytic Development Phenotypes Of Artemisinin-Resistant Plasmodium Falciparum Confer A Fitness Advantage, Amanda Hott

USF Tampa Graduate Theses and Dissertations

Resistance to artemisinin combination therapies (ACTs) has emerged in southeast Asia threatening the most widely used treatment against antimalarial-resistant Plasmodium falciparum worldwide. Artemisinin resistance has been associated with a reduced rate of parasite clearance following treatment with an ACT and is attributed to increased survival of ring-stage parasites. Single nucleotide polymorphisms (SNPs) in kelch gene (K13) has been associated with delayed in vivo clearance half-life of artemisinin-resistant P. falciparum and is the only known molecular marker of resistance. The absence of reliable in vitro phenotypes for artemisinin resistance has limited our understanding of the resistance mechanism(s) and fitness costs, therefore …

The Germ Theory Of Dystopias: Fears Of Human Nature In 1984 And Brave New World, Clea D. Harris

Scripps Senior Theses

This project is an exploration of 20^th century dystopian literature through the lens of germ theory. This scientific principle, which emerged in the late 19^th century, asserts that microorganisms pervade the world; these invisible and omnipresent germs cause specific diseases which are often life threatening. Additionally, germ theory states that vaccines and antiseptics can prevent some of these afflictions and that antibiotics can treat others. This concept of a pervasive, invisible, infection-causing other is not just a biological principle, though; in this paper, I argue that one can interpret it as an ideological framework for understanding human existence …

Is The Neuraminidase Inhibitor Tamiflu Effective In The Treatment Of Influenza?, Eliyakim Hershkop

The Science Journal of the Lander College of Arts and Sciences

Influenza is a disease that has caused the deaths of tens of millions people in the last century alone. The influenza neuraminidase protein is essential in the mechanism infection. It enables the virus to leave the infected cell and proliferate. Antiviral neuraminidase inhibitor drugs can be used for treatment. The drug Tamiflu is the standard of care for both treatment and prophylaxis of influenza. The Cochrane reports of 2009 and 2014 conclude that evidence is lacking to support this. Numerous bodies disagree. Cochrane also question the accuracy and credibility of many studies and agencies in support of Tamiflu. This paper …

A Coding Variant In Tmc8 (Ever2) Is Associated With High Risk Hpv Infection And Head And Neck Cancer Risk, Caihua Liang, Karl T. Kelsey, Michael D. Mcclean, Brock C. Christensen, Carmen J. Marsit

Dartmouth Scholarship

HPV infection is a causal agent in many epithelial cancers, yet our understanding of genetic susceptibility to HPV infection and resultant cancer risk is limited. Epidermodysplasia Verruciformis is a rare condition of extreme susceptibility to cutaneous HPV infection primarily attributable to mutations in TMC6 and TMC8. Genetic variation in the TMC6/TMC8 region has been linked to beta-type HPV infection and squamous cell carcinoma of the skin, cervical cancer, HPV persistence and progression to cervical cancer. Here, we have tested the hypothesis that the common TMC8 SNP rs7208422 is associated with high-risk HPV infection and risk of head and neck …

Incomplete Adherence Among Treatment-Experienced Adults On Antiretroviral Therapy In Tanzania, Uganda And Zambia, Julie A. Denison, Olivier Koole, Sharon Tsui, Joris Menten, Kwasi Torpey, Eric Van Praag, Ya Diul Mukadi, Robert Colebunders, Andrew F. Auld, Simon G. Agolory, Jonathan Kaplan, Modest Mulenga, Gideon Kwesigabo, Fred Wabwire-Mangen, David Bangsberg

OHSU-PSU School of Public Health Faculty Publications and Presentations

Objectives—To characterize antiretroviral therapy (ART) adherence across different programmes and examine the relationship between individual and programme characteristics and incomplete adherence among ART clients in sub-Saharan Africa.

Design—A cross-sectional study.

Methods—Systematically selected ART clients (≥18 years; on ART ≥6 months) attending 18 facilities in three countries (250 clients/facility) were interviewed. Client self-reports (3-day, 30-day, Case Index ≥48 consecutive hours of missed ART), healthcare provider estimates and the pharmacy medication possession ratio (MPR) were used to estimate ART adherence. Participants from two facilities per country underwent HIV RNA testing. Optimal adherence measures were selected on the basis of degree of association …

Managing Denture Biofilm Related Diseases, Tingxi Wu, Wenyuan Shi, Zvi G. Loewy, Xuesong He

Touro College of Pharmacy (New York) Publications and Research

The oral cavity harbors more than 700 microbial species and is one of the most complex ecosystems ever described. While the majority of these microbes are considered commensal, some of them are responsible for oral infectious diseases such as dental caries, periodontitis, halitosis and stomatitis. The advancement of modern science has greatly furthered our understanding of oral microbes and their roles in host health and disease. It has also led to the development of new tools for early detection, effective treatment, and prevention of oral microbial infections. This perspective provides a general understanding of oral microbiology, and its clinical relationship …

Combating Hiv/Aids In Marginalized Communities: Papua And West Papua Provinces, Indonesia, Bani Cheema

Master's Theses

My study focuses on foreign aid and local initiatives for HIV/AIDS prevention in eastern Indonesia using the provinces of Papua and West Papua as a case study. The two provinces are home to indigenous tribal groups that are socioeconomically marginalized and most affected by the epidemic. My research investigates behavior change communication as a principal strategy undertaken by multiple organizations for HIV/AIDS prevention in this region. I take a qualitative approach by examining the effectiveness of this strategy in local communities and by revealing social and cultural barriers that impede success. Obstacles that negatively impact prevention efforts include structural violence, …

P53 And Cancer-Associated Sialylated Glygans Are Surrogate Markers Of Cancerization Of The Bladder Associated With Schistosoma Haematobium Infection, Julio Santos, Elisabete Fernandes, Jose Alexandre Ferreira, Luis Lima, Ana Tavares, Andreia Peixoto, Beatriz Parreira, Jose Manuel Correia Da Costa, Paul J. Brindley, Carlos Lopes, Lucio L. Santos

Microbiology, Immunology, and Tropical Medicine Faculty Publications

Background

Bladder cancer is a significant health problem in rural areas of Africa and the Middle East where Schistosoma haematobium is prevalent, supporting an association between malignant transformation and infection by this blood fluke. Nevertheless, the molecular mechanisms linking these events are poorly understood. Bladder cancers in infected populations are generally diagnosed at a late stage since there is a lack of non-invasive diagnostic tools, hence enforcing the need for early carcinogenesis markers.

Methodology/Principal Findings

Forty-three formalin-fixed paraffin-embedded bladder biopsies of S. haematobium-infected patients, consisting of bladder tumours, tumour adjacent mucosa and pre-malignant/malignant urothelial lesions, were screened for bladder …

Discovering A Gold Mine Of U.S. Government Information: Exploring The Hathitrust Catalog And Its Rich Veins, Bert Chapman

Libraries Faculty and Staff Presentations

The Hathitrust Catalog provides researchers at member institutions with exponentially expanded access to historical U.S. Government information resources. This presentation describes how researchers can use this resource to conduct substantive research using government information resources on public policy issues such as Internal Revenue Service program problems, infectious diseases such as Ebola, and U.S. foreign relations with the former Soviet Union/Russian Federation.

Evaluating The Effectivesness Of Information Sources Regarding Hiv Among Gold Miners In Quảng Nam, Noah Landesberg

Independent Study Project (ISP) Collection

Young migrant males in strenuous manual labor environments represent a high-­‐risk population for the transmission of HIV/AIDS. In Vietnam, gold miners are representative of this high-­‐risk population. Phước Sơn district, Quảng Nam province is home to much of Vietnam’s mining activity and has a comparatively high rate of HIV. Previous studies have been done on HIV/AIDS prevalence in Quảng Nam as well as related knowledge and practices. This analysis of a 2014 questionnaire examines the effects of varying information sources on HIV/AIDS knowledge. The sample of workers was mostly male and between 25 and 49 years old. Migrants made up …

Evaluating Current Management Of Drug-Resistanttuberculosis In Mumbai, India, Meryl Kus

Independent Study Project (ISP) Collection

This research was aimed at analyzing the current state of drug resistant tuberculosis in Mumbai and how effectively different actors in the realm of public health are managing DR-TB. The methods for this project involved a variety of semi-structured interviews as well as field observation. Key findings show a very present and largely negative private sector influence, effective NGO models for disease control, a burden of DR-TB/HIV comorbidity, and a rapid increase to transmission-based spread of DR-TB. Key implications of conclusions include the necessity of increasing the private sector’s compliance with WHO standards, adaptation of community and education based NGO …

Regulation Of C-Reactive Protein Gene Expression And Function, Avinash N. Thirumalai

Electronic Theses and Dissertations

Human C-reactive protein (CRP) is the prototypic acute phase protein whose serum concentration increases rapidly during inflammation. CRP is also associated with atherosclerosis; it is deposited at lesion sites where it may interact with modified lipoproteins. There are 2 major questions regarding CRP: 1. How is the serum concentration of CRP regulated? 2. What are the functions of CRP in atherosclerosis?

Our first aim was to determine the role of the constitutively expressed transcription factor Oct-1 in regulating CRP gene expression. We found that Oct-1 overexpression inhibited (IL-6+IL-1β)- induced CRP gene expression; maximal inhibition required the binding of Oct-1 to …

Development Of A Turkey Coccidiosis Vaccine Candidate: An Attenuated Line Of The Protozoan Parasite, Eimeria Meleagrimitis, Thilakar Rathinam

Graduate Theses and Dissertations

Coccidiosis is an economically important enteric disease of poultry caused by protozoan parasites belonging to the genus Eimeria. Drugs are most commonly used to control coccidiosis. Widespread usage of anticoccidial drugs in the field has resulted in development of drug resistant strains and consequently decreased drug efficacy. An alternative control strategy using attenuated vaccines is desired. A series of experiments was designed to identify, isolate and attenuate a strain of a common and pathogenic species of Eimeria of turkeys, E. meleagrimitis.

Sensitivity of field isolates of turkey coccidia to the anticoccidials drugs amprolium, clopidol, diclazuril, and monensin was investigated. A …

Acanthamoeba Spp. As Reservoirs For Transmission Of Norovirus, Tun-Yun Hsueh

Graduate Theses and Dissertations

Human noroviruses (HuNoV) are the most common cause of foodborne disease outbreaks in the United States and the most common food commodities implicated in HuNoV outbreaks are leafy greens; however, the vehicle of transmission and point of contamination are often unknown. Here, we hypothesize that common free-living amoebae (FLA) ubiquitous in the environment may act as reservoirs of HuNoV and facilitate the transmission of these pathogens to fresh produce. The objective of this research was to first evaluate the interaction/association between HuNoV surrogates and Acanthamoeba by incubating them together and analyzing virus titer associated with amoeba through an 8 day …

It Is Time To Focus On An Underestimated Epidemic, Gladys E. Maestre, Ricardo Nitrini

School of Medicine Publications

Contemporary dementia research has spurred remarkable interest and endogenous efforts by clinical and research teams in Latin America and the Caribbean (LAC). The combination of unprecedented high burden of dementia, low resource settings, and wide acceptance of age-related cognitive changes has put thousands of individuals and families in a vulnerable situation that requires immediate attention. This issue of Dementia & Neuropsychologia is dedicated to cognitive impairment and dementia in LAC, and presents a timely series of fourteen reviews and original articles from Argentina, Brazil, Chile, Colombia, Costa Rica, Cuba, Dominican Republic, Ecuador, Peru, Trinidad and Tobago, and Venezuela. Many of …

Enhancement Of Antimicrobial Activity Of Naturally Occuring Phenolic Compounds By Nano-Particle Mediated Delivery Against Listeria Monocytogenes, Escherichia Coli O157:H7, And Salmonella Typhimurium, Madhuram Ravichandran

Graduate Theses and Dissertations

Food-borne illnesses are of major concern in the U.S. and worldwide. Salmonella,Listeria,E. coli O157:H7 continue to be some of the major foodborne pathogens. Recurring recalls due to these pathogens demand critical antimicrobial strategies to decontaminate the food through its procession from farm to fork. In our study, we combined the effectiveness of naturally occurring phenolic compounds individually, with/ without ethylenediamine tetraacetic acid (EDTA) and/or Nisin and nanoparticle delivery to improve the antimicrobial potential of the compounds against Listeria monocytogenes (L.m.), Salmonella Typhimurium (S.T.), and Escherichia coli O157:H7 (E.c.), in brain …

The President’S National Security Agenda Curtailing Ebola, Safeguarding The Future, Lawrence O. Gostin, Henry A. Waxman, William Foege

Georgetown Law Faculty Publications and Other Works

A clear lesson of the Ebola epidemic in West Africa is the need for strong public health systems globally, including in the United States. Ebola has highlighted the dangers of weak public health systems, from the immense shortage of health workers in West Africa to the budget cuts at the U.S. Centers for Disease Control and Prevention. In response to Ebola and the broader threat of infectious disease, President Obama has proposed a $6.2 billion supplemental funding request to Congress. The supplemental would surge resources for containing and treating Ebola in West Africa -- including a reserve of funds to …

Chip-Seq And In Vivo Transcriptome Analyses Of The Aspergillus Fumigatus Srebp Srba Reveals A New Regulator Of The Fungal Hypoxia Response And Virulence, Dawoon Chung, Bridget M. Barker, Charles C. Carey, Brittney Merriman

Dartmouth Scholarship

The Aspergillus fumigatus sterol regulatory element binding protein (SREBP) SrbA belongs to the basic Helix-Loop-Helix (bHLH) family of transcription factors and is crucial for antifungal drug resistance and virulence. The latter phenotype is especially striking, as loss of SrbA results in complete loss of virulence in murine models of invasive pulmonary aspergillosis (IPA). How fungal SREBPs mediate fungal virulence is unknown, though it has been suggested that lack of growth in hypoxic conditions accounts for the attenuated virulence. To further understand the role of SrbA in fungal infection site pathobiology, chromatin immunoprecipitation followed by massively parallel DNA sequencing (ChIP-seq) was …

Autoantibodies To The Ny-Eso-1 Tumor Antigen In Metastatic Melanoma: Sialylation Of The Fc Region Of Immunoglobulin G Induces Differential Expression Signatures Of Inflammatory Molecules During Dendritic Cell Differentiation And Maturation, Martin Oaks, Nathaniel Rein, John O. Richards, James Shaffer

Journal of Patient-Centered Research and Reviews

Purpose: We tested the hypothesis that different glycoforms of antibodies from patients with metastatic melanoma have different functional effects on human dendritic cell differentiation and maturation.

Methods: Antibodies to the cancer antigen NY-ESO-1 were affinity-purified from patients with melanoma and further fractionated into different glycoforms by lectin chromatography. Sialic acid-rich and sialic acid-poor fractions of these immunoglobulin G antibodies (IgG) were added to dendritic cell cultures during both differentiation and maturation, and the resulting cellular messenger RNA (mRNA) and culture supernatants were tested by microarray and enzyme-linked immunoassay for molecules related to inflammatory pathways.

Results: We identified unique mRNA and …

Strengthening Neglected Tropical Disease Research Through Enhancing Research-Site Capacity: An Evaluation Of A Novel Web Application To Facilitate Research Collections, Tanzin Furtado, Samuel Franzen, Francois Van Loggerenberg, Gwenaelle Carn, Shannon Grahek, Megan Mcbride, Maureen Power, Barbara Savarese, Margaret Ann Snowden, Gwynn Stevens, Almarie Uys, Trudie Lang

Microbiology, Immunology, and Tropical Medicine Faculty Publications

No abstract provided.