Matching Items (40)
Description
The HIV pandemic spawned a global biomedical research effort which continues today. Because of multinational clinical studies, doctors and health officials possess more tools than ever before for the effective prevention and treatment of HIV/AIDS. The relationship between the United States and Sub-Saharan African nations features prominently within this global research effort. More specifically, many of the most significant HIV-related research findings emanate from clinical trials with a unique multinational configuration: the study protocol is largely designed and funded by American sources but executed at clinical research sites in Sub-Saharan African countries like South Africa and Zimbabwe. This thesis investigates the context and ethics of this configuration, with a focus on US-backed trials conducted in South Africa specifically. Using data collected from semi-structured interviews conducted at South African HIV clinical research sites, this thesis uncovers two significant ethical problems: insufficient benefits delivered to South African clinical trial participants, and informal processes occurring alongside formal protocol. By examining scope, effects, and implications of these problems, it becomes clear that although this research system delivers powerful results, there exists room for improvement.
ContributorsGill, Kohinoor Singh (Author) / Hurlbut, Ben (Thesis director) / Ripley, Charles (Committee member) / Vanig, Thanes (Committee member) / School of Politics and Global Studies (Contributor) / WPC Graduate Programs (Contributor) / Barrett, The Honors College (Contributor)
Created2016-12
Description
Phylogenetic analyses that were conducted in the past didn't have the ability or functionality to inform and implement useful public health decisions while using clustering. Models can be constructed to conduct any further analyses for the result of meaningful data to be used in the future of public health informatics. A phylogenetic tree is considered one of the best ways for researchers to visualize and analyze the evolutionary history of a certain virus. The focus of this study was to research HIV phylodynamic and phylogenetic methods. This involved identifying the fast growing HIV transmission clusters and rates for certain risk groups in the US. In order to achieve these results an HIV database was required to retrieve real-time data for implementation, alignment software for multiple sequence alignment, Bayesian analysis software for the development and manipulation of models, and graphical tools for visualizing the output from the models created. This study began by conducting a literature review on HIV phylogeographies and phylodynamics. Sequence data was then obtained from a sequence database to be run in a multiple alignment software. The sequence that was obtained was unaligned which is why the alignment was required. Once the alignment was performed, the same file was loaded into a Bayesian analysis software for model creation of a phylogenetic tree. When the model was created, the tree was edited in a tree visualization software for the user to easily interpret. From this study the output of the tree resulted the way it did, due to a distant homology or the mixing of certain parameters. For a further continuation of this study, it would be interesting to use the same aligned sequence and use different model parameter selections for the initial creation of the model to see how the output changes. This is because one small change for the model parameter could greatly affect the output of the phylogenetic tree.
ContributorsNandan, Meghana (Author) / Scotch, Matthew (Thesis director) / Liu, Li (Committee member) / Biomedical Informatics Program (Contributor) / Barrett, The Honors College (Contributor)
Created2018-05
Description
In the years following the HIV epidemic, much has changed in the way of public health, the social epidemic of stigma has remained. It is the assertion of the authors that stigma can be combatted through the propagation of accurate education and exposure to the lasting negative impacts of social stigma on persons living with HIV in the United States at present. Although individuals who are not apart of this community cannot truly understand the impacts of HIV-related stigma on those directly impacted by it, a sense of understanding and compassion may be elicited through the breakdown of social stigma into comprehensible components and the provision of stigma-inspired artwork. In addition to providing a background on the scientific basis of Human immunodeficiency virus and its spread, the authors have elected to utilize public engagement by means of an anonymous survey as well as personal interactions with HIV advocates to synthesize paintings. Responses were collected from approximately 300 survey participants via social media with no demographic information collected. It was the hope of the authors that the lack of identifying questions may prompt participants to answer freely and honestly to improve overall understanding of social perceptions of HIV and its related stigma. These paintings and resources deemed appropriate based on the results of the aforementioned survey are to be displayed on a webpage for easier access and engagement with a broader audience.Moreover, this webpage is intended to be maintained and utilized beyond the timeframe of this Undergraduate Honors Thesis for the intended purpose of promoting stigma-free HIV advocacy and education.
ContributorsRidgley, Nathan Laurence (Co-author) / Luigs, Stephanie (Co-author) / Jacobs, Bertram (Thesis director) / Salamone, Damien (Committee member) / Spencer, Glen (Committee member) / School of Molecular Sciences (Contributor) / School of Life Sciences (Contributor) / Barrett, The Honors College (Contributor)
Created2018-05
Description
Since the Acquired Immune Deficiency Syndrome (AIDS) crisis began in the early 1980s, there has been a significant amount of stigma attached to the disease and the virus that causes it, Human Immunodeficiency Virus (HIV). At the time, HIV/AIDS was viewed as a death sentence. A large part of the stigma came from the fact that in the early days of the crisis, AIDS patients were predominantly part of the LGBTQ+ community. With the discovery of effective antiretroviral therapies, today HIV can be thought of as a preventable, yet manageable, chronic illness, although it remains a huge public health concern (About HIV/AIDS, 2018). While the virus is now rarely viewed as a death sentence, there is still considerable stigma that surrounds people living with HIV/AIDS (PLWHA). Research shows that the shows and movies people watch can affect their attitudes on a variety of issues, and HIV is no exception. Because HIV is such a big threat to public health, and because people often adopt views they see in media, analyzing the ways shows and movies portray PLWHA is an important aspect in understanding where stigma surrounding HIV/AIDS comes from. The writers behind today's HIV+ characters on television and in movies all seemingly made an effort to decrease stigma, but they went about it in different ways, and with varying amounts of success. A common method to dispel stigma was to use the entertainment-education method (Singhal & Rogers, 1999), which in these cases means characters had discussions about topics like safe sex, Pre-Exposure Prophylaxis (PrEP), and the importance of getting tested. A few shows showed serodiscordant couples, which was also effective at fighting stigma. In contrast, by trying to be representative of PLWHA, some shows actually contributed to the stereotypes behind the stigma, or had characters be openly stigmatizing towards PLWHA. After analyzing what I found the shows and movies did well and what they did poorly, I'll analyze why it is important that shows maintained historical accuracy, and how doing so appeared to fight the stigma associated with HIV/AIDS. I will also evaluate what's missing \u2014 such as which high-risk groups are not represented. Ultimately, this thesis will argue that shows and movies made in the last 12 years all aimed to decrease stigma, through a variety of techniques.
ContributorsEvans, Celia Grace (Author) / Hurlbut, Ben (Thesis director) / Berkel, Cady (Committee member) / Blattman, Joseph (Committee member) / School of Life Sciences (Contributor) / Department of Psychology (Contributor) / Barrett, The Honors College (Contributor)
Created2018-12
Description
This research study was performed to demonstrate the need for more evidence-based, sexual promotion programs for lesbian, gay, bisexual, and transgender (LGBT+) youth. A qualitative study was conducted due to the lack of evidence among the younger LGBT+ demographic regarding contributing factors that lead to engagement in risky sexual behaviors. Data was collected through a formal focus group with adolescent members of the one.n.ten program in Phoenix, Arizona. An inductive coding technique was used to analyze the data, and significant statements from participants regarding experiences in the context of family, religion, school, and previous sexual health programs were included in the results. This paper will provide a review of literature about the growing LGBT+ community, increasing HIV incidence rates among young men who have sex with men (YMSM), strategies to reduce HIV rate, and the role of parents as sexual educators during and after their child's coming out process. It will also discuss the importance of positive parent-child relationships and the need for family-based sexual education programs.
ContributorsPerez, Arsenio (Author) / Berkel, Cady (Thesis director) / Wolfersteig, Wendy (Committee member) / Barrett, The Honors College (Contributor) / Department of Psychology (Contributor) / Southwest Interdisciplinary Research Center (Contributor)
Created2018-05
Description
CTB-MPR649-684 is a translational fusion protein consisting of the cholera toxin B subunit (CTB) and the conserved residues 649-684 of gp41 membrane proximal region (MPR). It is a candidate vaccine component aimed at early steps of the HIV-1 infection by blocking viral mucosal transmission. Bacterially produced CTB-MPR was previously shown to induce HIV-1 transcytosis-blocking antibodies in mice and rabbits. However, the induction of high-titer MPR specific antibodies with HIV-1 transcytosis blocking ability remains a challenge as the immuno-dominance of CTB overshadows the response to MPR. X-ray crystallography was used to investigate the structure of CTB-MPR with the goal of identifying potential solutions to improve the immune response of MPR. Various CTB-MPR variants were designed using different linkers connecting the two fusion proteins. The procedures for over-expression E. coli and purification have been optimized for each of the variants of CTB-MPR. The purity and oligomeric homogeneity of the fusion protein was demonstrated by electrophoresis, size-exclusion chromatography, dynamic light scattering, and immuno-blot analysis. Crystallization conditions for macroscopic and micro
ano-crystals have been established for the different variants of the fusion protein. Diffraction patterns were collected by using both conventional and serial femto-second crystallography techniques. The two crystallography techniques showed very interesting differences in both the crystal packing and unit cell dimensions of the same CTB-MPR construct. Although information has been gathered on CTB-MPR, the intact structure of fusion protein was not solved as the MPR region showed only weak electron density or was cleaved during crystallization of macroscopic crystals. The MPR region is present in micro
ano-crystals, but due to the severe limitation of the Free Electron Laser beamtime, only a partial data set was obtained and is insufficient for structure determination. However, the work of this thesis has established methods to purify large quantities of CTB-MPR and has established procedures to grow crystals for X-ray structure analysis. This has set the foundation for future structure determination experiments as well as immunization studies.
ano-crystals have been established for the different variants of the fusion protein. Diffraction patterns were collected by using both conventional and serial femto-second crystallography techniques. The two crystallography techniques showed very interesting differences in both the crystal packing and unit cell dimensions of the same CTB-MPR construct. Although information has been gathered on CTB-MPR, the intact structure of fusion protein was not solved as the MPR region showed only weak electron density or was cleaved during crystallization of macroscopic crystals. The MPR region is present in micro
ano-crystals, but due to the severe limitation of the Free Electron Laser beamtime, only a partial data set was obtained and is insufficient for structure determination. However, the work of this thesis has established methods to purify large quantities of CTB-MPR and has established procedures to grow crystals for X-ray structure analysis. This has set the foundation for future structure determination experiments as well as immunization studies.
ContributorsLee, Ho-Hsien (Author) / Fromme, Petra (Thesis advisor) / Mor, Tsafrir (Committee member) / Ros, Alexandra (Committee member) / Arizona State University (Publisher)
Created2015
Description
This document analyzes the use of the Principles of Design within the applied project It’s My Party, a multimedia dance theatre production, as a means to address and overcome the stigmatization of the Human Immunodeficiency Virus (HIV). Through the orchestration of dance, music, props, acting, video, and spoken word, this interdisciplinary work investigates how these production elements synthesize into a transformative theatrical experience for audiences. Outlined in this document is the eight month design process. The process included concept design, assessing, processing, customizing the message, script development, rehearsals, and video production, and concluded with an evening length production. Analyzed through the structural narrative of The Hero’s Journey, this autobiographic work details the author’s HIV-positive (HIV+) coming out story from a restorative narrative perspective. By addressing the subject of HIV from a contemporary point-of-view, this project strives to reencode the troubling associations affiliated with HIV with an empowered and hopeful understanding.
ContributorsAlvarez, Ricardo (Author) / Schupp, Karen (Thesis advisor) / Magenta, Muriel (Committee member) / Rajko, Jessica (Committee member) / Standley, Eileen (Committee member) / Arizona State University (Publisher)
Created2016
Description
The HIV-1 pandemic continues to cause millions of new infections and AIDS-related deaths each year, and a majority of these occur in regions of the world with limited access to antiretroviral therapy. Therefore, an HIV-1 vaccine is still desperately needed. The most successful HIV-1 clinical trial to date used a non-replicating canarypox viral vector and protein boosting, yet its modest efficacy left room for improvement. Efforts to derive novel vectors which can be both safe and immunogenic, have spawned a new era of live, viral vectors. One such vaccinia virus vector, NYVAC-KC, was specifically designed to replicate in humans and had several immune modulators deleted to improve immunogenicity and reduce pathogenicity. Two NYVAC-KC vectors were generated: one expressing the Gag capsid, and one with deconstructed-gp41 (dgp41), which contains an important neutralizing antibody target, the membrane proximal external region (MPER). These vectors were combined with HIV-1 Gag/dgp41 virus-like particles (VLPs) produced in the tobacco-relative Nicotiana benthamiana. Different plant expression vectors were compared in an effort to improve yield. A Geminivirus-based vector was shown to increase the amount of MPER present in VLPs, thus potentially enhancing immunogenicity. Furthermore, these VLPs were shown to interact with the innate immune system through Toll-like receptor (TLR) signaling, which activated antigen presenting cells to induce a Th2-biased response in a TLR-dependent manner. Furthermore, expression of Gag and dgp41 in NYVAC-KC vectors resulted in activation of antiviral signaling pathways reliant on TBK1/IRF3, which necessitated the use of higher doses in mice to match the immunogenicity of wild-type viral vectors. VLPs and NYVAC-KC vectors were tested in mice, ultimately showing that the best antibody and Gag-specific T cell responses were generated when both components were administered simultaneously. Thus, plant-produced VLPs and poxvirus vectors represent a highly immunogenic HIV-1 vaccine candidate that warrants further study.
ContributorsMeador, Lydia Rebecca (Author) / Mor, Tsafrir S (Thesis advisor) / Jacobs, Bertram L (Thesis advisor) / Blattman, Joseph N (Committee member) / Mason, Hugh S (Committee member) / Arizona State University (Publisher)
Created2016
Description
Viral protein U (Vpu) is a type-III integral membrane protein encoded by the Human Immunodeficiency Virus-1 (HIV- 1). It is expressed in infected host cells and plays vital roles in down-regulation of CD4 receptors in T cells and also in the budding of virions. But, there remain key structure/function questions regarding the mechanisms by which the Vpu protein contributes to HIV-1 pathogenesis and thus, it makes for an attractive target to study the structural attributes of this protein by elucidating a structural model with X-ray crystallography. This study describes a multi-pronged approach of heterologous over-expression of Vpu. The strategies of purification and biophysical/ biochemical characterization of the different versions of the protein to evaluate their potential for crystallization are also detailed. Furthermore, various strategies employed for the crystallization of Vpu by both in surfo and in cubo techniques, and the challenges faced towards the structural studies of this membrane protein by characterization with solution Nuclear magnetic resonance (NMR) spectroscopy are also described.
ContributorsDeb, Arpan (Author) / Leket-Mor, Tsafrir S (Thesis advisor) / Fromme, Petra (Committee member) / Mason, Hugh (Committee member) / Stout, Valerie (Committee member) / Arizona State University (Publisher)
Created2016
Description
Abstract: International Service Devils (ISD) is a non-profit volunteer program established and run by students at Arizona State University, Polytechnic Campus. Since 2013, International Service Devils has volunteered in Costa Rica, Guatemala, and India. This blog, written by Kali Richmond and myself, shares the experience of how we as students have established a new volunteer program in Ho Chi Minh City, Vietnam. We have described in an entertaining fashion, our entire learning process from the brainstorming and organizing, to the results of the trip itself. This includes the struggles that we had to overcome with planning and finances, as well as crediting the people and organizations who helped us along the way to overcome those obstacles. We established 2 volunteer projects as well as completed multiple community analyses for the possibility of starting a school and providing scholarships to deserving children through the Young Dreamer Network. This blog is accompanied by an approximately 15 minute video of footage and photos taken during our time in Vietnam. The video shows both the volunteer aspect as well as some of the cultural experiences that we experienced. The purpose of this documentation is to encourage international service learning as a source of experience and education for University students, and to show plausibility of setting goals similar to ours and being able to achieve them. We hope that our writing can help students get an idea of what it takes to be a leader in international service learning programs, and that our experience can help prove the worth of volunteering abroad. We want to inspire fellow students to travel with the mission to learn from wherever they go and be able to give back to those communities, as this has provided us with immense personal growth and new perspectives on education and culture.
ContributorsChacon, Zari (Co-author) / Richmond, Kali (Co-author) / Oberstein, Bruce (Thesis director) / Ostroski, Tammy (Committee member) / College of Letters and Sciences (Contributor) / Barrett, The Honors College (Contributor)
Created2017-05