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- All Subjects: Biology
- Creators: School of Molecular Sciences
Description
Lyme disease is a common tick-borne illness caused by the Gram-negative bacterium Borrelia burgdorferi. An outer membrane protein of Borrelia burgdorferi, P66, has been suggested as a possible target for Lyme disease treatments. However, a lack of structural information available for P66 has hindered attempts to design medications to target the protein. Therefore, this study attempted to find methods for expressing and purifying P66 in quantities that can be used for structural studies. It was found that by using the PelB signal sequence, His-tagged P66 could be directed to the outer membrane of Escherichia coli, as confirmed by an anti-His Western blot. Further attempts to optimize P66 expression in the outer membrane were made, pending verification via Western blotting. The ability to direct P66 to the outer membrane using the PelB signal sequence is a promising first step in determining the overall structure of P66, but further work is needed before P66 is ready for large-scale purification for structural studies.
ContributorsRamirez, Christopher Nicholas (Author) / Fromme, Petra (Thesis director) / Hansen, Debra (Committee member) / Department of Physics (Contributor) / School of Molecular Sciences (Contributor) / Barrett, The Honors College (Contributor)
Created2021-05
Description
As of March 2020, there were over 112,400 patients actively waiting on the United States national organ transplant waitlist with only about 3,300 donors1. Although transplantation is an effective treatment for end-stage organ failure, the access to a procedure will vary depending on national regulations, cost of health care, extensive screening processes, and the availability of organs2. Organ shortage is a worldwide problem, and the growing insufficiency has resulted patients becoming too for ill or dying while waiting3. Due to the varying wait times and costs of procedures, some patients have begun to outsource their own transplantation through international transactions, also known as transplant tourism2. The 2004 World Health Assembly resolution recognized these trades as a significant health policy issue, while also acknowledging the inability of national health care systems to meet the needs of patients4. To address this issue, a proposal will be made such that all live kidney and liver donors will be compensated $22,500 and $12,150 respectively through a cost-neutral scheme based on annual healthcare expenditures per organ that would be eliminated by a transplant. With this proposal, it is suggested that the organ transplant waitlist would not only be significantly reduced, but potentially eliminated, and the crisis of organ shortage would be defeated.
ContributorsMartin, Starla (Author) / Kingsbury, Jeffrey (Thesis director) / Edmonds, Hallie (Committee member) / School of Molecular Sciences (Contributor) / School of Human Evolution & Social Change (Contributor) / Barrett, The Honors College (Contributor)
Created2020-05
Description
In 2017 alone, over 250,00 patients died due to medical errors and is the 3rd leading cause of death in America. These errors attributed to incorrect diagnosis and treatment of illnesses can be preventable. The solution to this major issue is the creation of an app called HealthKeep. Primary market research done during the first semester of the study included the creation of a school-wide survey across all ASU campuses that consisted of key questions for people of all ages in regards to their healthcare. These questions include how often patients of specific age ranges visit the doctor, their overall experience during appointments, and their attitudes towards the creation of a mobile health application that would be able to tabulate all your medical information neatly and securely. The overwhelming response stated that patient’s from all ranges would be open to the idea of having such an application. Further development included the creation of a business plan and application storyboard used when interviewing potential customers about the application. All of these tools aided in the first entry for Venture Devils in the first semester leading to the disappointing failure of winning funding. However, the feedback on the website created, executive summary, expanded pitch deck, and market research aided in the successful key revisions of the venture during this second semester and has resulted in placement in the final round of Pitch Playoffs where funding can be awarded.
ContributorsSiraj, Salim (Co-author) / Undrill, Grayson (Co-author) / Ott, Madison (Co-author) / Smith, Keaton (Co-author) / Byrne, Jared (Thesis director) / Sebold, Brent (Committee member) / School of Molecular Sciences (Contributor) / Barrett, The Honors College (Contributor)
Created2020-05
Description
All multicellular organisms are susceptible to developing cancer, but some organisms have varying sensitivities to the disease. One such organism is the Trichoplax adhaerens which has no documented case of cancer development. T. adhaerens cancer resistance was studied by observing physiological and morphological changes of the organism after radiation treatment. Preliminary experiments suggested that this organism is able to survive exposure to 160 gray radiation treatment almost as well as untreated organisms. The T. adhaerens have two genes, TriadG6402 and TriadG5479, similar to the human genes TP53 and MDM2 respectively. TP53 and MDM2 are the two main genes associated with apoptosis in humans: an important cell regulatory checkpoint involved in cancer prevention. PCR analysis, done after radiation treatment, showed an overexpression of the ortholog gene MDM2 in the T. adhaerens. This may suggest that T. adhaerens block apoptosis from occurring and that their ortholog gene is involved in DNA repair. It is significant to study the gene expression of TriadG6402 and TriadG54791 in T. adhaerens because these genes are well conserved in humans. Future studies of these genes in the T. adhaerens can be used to understand the evolution of the function of these genes in more complex organisms and be used for human cancer prevention.
ContributorsKulkarni, Arathi (Author) / Fortunato, Angelo (Thesis director) / Maley, Carlo (Committee member) / Department of Economics (Contributor) / School of Molecular Sciences (Contributor) / Barrett, The Honors College (Contributor)
Created2019-05
Description
Enzyme Replacement Therapy (ERT) is a treatment often used for patients with disorders that affect the production of various enzymes within the body, such as Cystic Fibrosis and Fabry Disease. ERT involves the use of artificially-produced enzymes, which can be derived from humans, pigs, and bacteria. Generally, enzymes derived from porcine and bacterial sources are much less expensive and more accessible than those derived from a human source. This, and the ethical implications that porcine enzymes carry, make the decision of choosing treatment simple to some and complex to others. Ethically, human-derived enzymes are often considered more ethical, while not conflicting with religious beliefs and practices as porcine-derived enzymes do.
In order to further compare porcine and human-derived enzymes, a determination of the enzyme effectiveness was done via digestion simulation. The digestion for both the human and porcine-derived enzymes consisted of three steps: oral, gastric, and intestinal. After the digestion, the absorbance for each enzyme class as well as a dilution curve of the formula used was read and recorded. Using the standard dilution curve and the absorbance values for each unknown, the formula and thus enzyme concentration that was lost through the reaction was able to be calculated.
The effectiveness of both the human and porcine enzymes, determined by the percent of formula lost, was 18.2% and 19.7%, respectively, with an error of 0.6% from the spectrophotometer, and an error of about 10% from the scale used for measuring the enzymes. This error was likely due to the small mass required of the enzymes and can be prevented in the future by performing the experiment at a larger scale.
In order to further compare porcine and human-derived enzymes, a determination of the enzyme effectiveness was done via digestion simulation. The digestion for both the human and porcine-derived enzymes consisted of three steps: oral, gastric, and intestinal. After the digestion, the absorbance for each enzyme class as well as a dilution curve of the formula used was read and recorded. Using the standard dilution curve and the absorbance values for each unknown, the formula and thus enzyme concentration that was lost through the reaction was able to be calculated.
The effectiveness of both the human and porcine enzymes, determined by the percent of formula lost, was 18.2% and 19.7%, respectively, with an error of 0.6% from the spectrophotometer, and an error of about 10% from the scale used for measuring the enzymes. This error was likely due to the small mass required of the enzymes and can be prevented in the future by performing the experiment at a larger scale.
ContributorsBlevins, Brianna R (Author) / Martin, Thomas (Thesis director) / McILwraith, Heide (Committee member) / College of Integrative Sciences and Arts (Contributor) / School of Molecular Sciences (Contributor) / Barrett, The Honors College (Contributor)
Created2020-05
Description
The purpose of this project is to develop a risk assessment tool for the University of California, Riverside (UCR). UCR is health enterprise that manages operations under an environment of innate and uncontrollable risks. Therefore, a risk assessment tool is highly advisable under California State Laws and federal laws. In the case of overlapping laws, federal law will always prevail unless State law explicitly states otherwise. California Health Information Privacy Manual states that California must follow numerous state guidelines and a federal set of guidelines called HIPAA (Health Insurance Portability and Accountability Act of 1996). HIPAA is put in place to protect and serve as an organizational tool to develop a stronger and more secure infrastructure of security measures within healthcare enterprises. Under HIPAA is a Security and Privacy Rule that was implemented by The U.S. Department of Health and Human Services (HHS) and will serve as the basis for the risk assessment tool I developed. The Security and Privacy Rule's main goal is to set a national standard of how electronic protected health information (ePHI) will be appropriately used and disclosed by organizations subject to this rule, also known covered entities. Covered entities include health plans, health care providers and health care clearinghouses unless specifically stated otherwise. Permitted uses and disclosures of PHI or ePHI are outlined in detail and covered entities are expected to follow all aspects of it that pertain to their role within a healthcare system. Under HHS, the Office of Civil Rights (OCR) strictly enforces the Security and Privacy Rules and can issue civil money penalties and/or other major consequences making this a sizable and critical issue in healthcare environments. Each risk and impact must be assessed to determine an overall risk score. This score will then determine what risks need to be immediately addressed and which risks are most critical to UCR. To do this, potential impacts were determined for each section. The impact score can be decided by using a chart that will be discussed in the development section. The likeliness of the risk can be determined by a UCR professional via the provided chart and an overall risk score can be assigned. From here, an action plan can be set and carried out to eliminate possible hazards and imminent risks. Once a Risk Assessment tool is developed, potential risks can be indentified and dealt with appropriately in regard to level of impact and the likelihood of the risk occurring. By reducing risk, a healthcare enterprise can gain greater financial stability, decrease loss and protect vital information that is critical to the success organization.
ContributorsAustin, Hannah N. (Author) / Riley, William (Thesis director) / Hackman, Paul (Committee member) / School of Molecular Sciences (Contributor) / W.P. Carey School of Business (Contributor) / Barrett, The Honors College (Contributor)
Created2018-05
Description
This research will focus on identifying healthcare disparities among different groups of people in Maricopa County, with a focus on the Phoenix area. It takes form in a combination of a review of previously existing data, surveying pregnant women about their health insurance situations before their pregnancies, and surveying college students in Maricopa County about their past and current health insurance situations. The pregnant women who were interview were part of a study called Metabolism Tracking During Pregnancy through the School of Nutrition and Health Promotion at Arizona State University. College students who were interviewed were recruited online and all participants were choosing to respond. This research paper will focus on policies currently in place to try to address healthcare disparities and establishing the presence of healthcare disparities that are preexisting, and using individual responses from a small sample size of minorities and women to represent the larger Phoenix population. Differences in healthcare spending for different groups of people will also be analyzed in order to establish disparities present. This research is significant because if healthcare equality is the goal, then spending distribution to each should be proportional to the size of each subpopulation.
ContributorsGeiser, Rachel (Author) / Reifsnider, Elizabeth (Thesis director) / Cortese, Denis (Committee member) / School of Molecular Sciences (Contributor) / School of International Letters and Cultures (Contributor) / School of Politics and Global Studies (Contributor) / Barrett, The Honors College (Contributor)
Created2018-05
Description
Bee communities form the keystone of many ecosystems through their pollination services. They are dynamic and often subject to significant changes due to several different factors such as climate, urban development, and other anthropogenic disturbances. As a result, the world has been experiencing a decline in bee diversity and abundance, which can have detrimental effects in the ecosystems they inhabit. One of the largest factors that impacts bees in today's world is the rapid urbanization of our planet, and it impacts the bee community in mixed ways. Not very much is understood about the bee communities that exist in urban habitats, but as urbanization is inevitably going to continue, knowledge on bee communities will need to strengthen. This study aims to determine the levels of variance in bee communities, considering multiple variables that bee communities can differ in. The following three questions are posed: do bee communities that are spatially separated differ significantly? Do bee communities that are separated by seasons differ significantly? Do bee communities that are separated temporally (by year, interannually) differ significantly? The procedure to conduct this experiment consists of netting and trapping bees at two sites at various times using the same methods. The data is then statistically analyzed for differences in abundance, richness, diversity, and species composition. After performing the various statistical analyses, it has been discovered that bee communities that are spatially separated, seasonally separated, or interannually separated do not differ significantly when it comes to abundance and richness. Spatially separated bee communities and interannually separated bee communities show a moderate level of dissimilarity in their species composition, while seasonally separated bee communities show a greater level of dissimilarity in species composition. Finally, seasonally separated bee communities demonstrate the greatest disparity of bee diversity, while interannually separated bee communities show the least disparity of bee diversity. This study was conducted over the time span of two years, and while the levels of variance of an urban area between these variables were determined, further variance studies of greater length or larger areas should be conducted to increase the currently limited knowledge of bee communities in urban areas. Additional studies on precipitation amounts and their effects on bee communities should be conducted, and studies from other regions should be taken into consideration while attempting to understand what is likely the most environmentally significant group of insects.
ContributorsPhan, James Thien (Author) / Sweat, Ken (Thesis director) / Foltz-Sweat, Jennifer (Committee member) / School of Music (Contributor) / School of Molecular Sciences (Contributor) / Barrett, The Honors College (Contributor)
Created2017-05
Description
The college textbook is the most commonly required component of almost any college course, regardless of a student's academic discipline. Professors often expect students to have access to the textbook and to use it to complete assigned readings. Textbooks often contain features that are designed to facilitate active reading, or critical engagement with the information being read, to enhance learning of the material. However, students often do not read or prioritize reading the textbook. Students who do read, tend not to read the textbook as intended or use many of the features designed to promote active reading and enhanced learning of the material. Educational studies of textbooks tend to focus on aspects related to topics more relevant to publishers or professors with less research on aspects of the textbook applicable to students at the college level. The purpose of this study is to evaluate students' textbook use and their attitudes toward the textbook in an introductory biology course. Results of this study indicate students hold positive attitudes toward their textbook in an introductory biology course and majority of students do not use components meant to facilitate active learning. Although students report completing assigned readings, students may actually be reading select portions of what is assigned in using the textbook to prepare for exams. These results suggest that students may only be using their textbook to enhance their understanding of materials they expect to be tested on. The findings of this study help to understand the role of the textbook from the perspective of the student and provide insight for improving textbook design and use in science courses at the college level.
ContributorsRudolph, Alexia Marion (Author) / Vanmali, Binaben (Thesis director) / Chen, Ying-Chih (Committee member) / Yoho, Rachel (Committee member) / Department of Psychology (Contributor) / School of Molecular Sciences (Contributor) / Barrett, The Honors College (Contributor)
Created2016-05
Description
This study investigates how the patient-provider relationship between lesbian, gay, and bisexual women and their healthcare providers influences their access to, utilization of, and experiences within healthcare environments. Nineteen participants, ages 18 to 34, were recruited using convenience and snowball sampling. Interviews were conducted inquiring about their health history and their experiences within the healthcare system in the context of their sexual orientation. The data collected from these interviews was used to create an analysis of the healthcare experiences of those who identify as queer. Although the original intention of the project was to chronicle the experiences of LGB women specifically, there were four non-binary gender respondents who contributed interviews. In an effort to not privilege any orientation over another, the respondents were collectively referred to as queer, given the inclusive and an encompassing nature of the term. The general conclusion of this study is that respondents most often experienced heterosexism rather than outright homophobia when accessing healthcare. If heterosexism was present within the healthcare setting, it made respondents feel uncomfortable with their providers and less likely to inform them of their sexuality even if it was medically relevant to their health outcomes. Gender, race, and,socioeconomic differences also had an effect on the patient-provider relationship. Non-binary respondents acknowledged the need for inclusion of more gender options outside of male or female on the reporting forms often seen in medical offices. By doing so, medical professionals are acknowledging their awareness and knowledge of people outside of the binary gender system, thus improving the experience of these patients. While race and socioeconomic status were less relevant to the context of this study, it was found that these factors have an affect on the patient-provider relationship. There are many suggestions for providers to improve the experiences of queer patients within the healthcare setting. This includes nonverbal indications of acknowledgement and acceptance, such as signs in the office that indicate it to be a queer friendly space. This will help in eliminating the fear and miscommunication that can often happen when a queer patient sees a practitioner for the first time. In addition, better education on medically relevant topics to queer patients, is necessary in order to eliminate disparities in health outcomes. This is particularly evident in trans health, where specialized education is necessary in order to decrease poor health outcomes in trans patients. Future directions of this study necessitate a closer look on how race and socioeconomic status have an effect on a queer patient's relationship with their provider.
ContributorsRajan, Sindhu (Co-author) / Bradley, Arianna (Co-author) / Larson, Michelle (Co-author) / Alvarado, Aimee (Co-author) / Ingram-Waters, Mary (Thesis director) / Arnold, Michelle (Committee member) / School of Molecular Sciences (Contributor) / School of Social Transformation (Contributor) / T. Denny Sanford School of Social and Family Dynamics (Contributor) / College of Public Service and Community Solutions (Contributor) / School of Human Evolution and Social Change (Contributor) / School of Historical, Philosophical and Religious Studies (Contributor) / School of Life Sciences (Contributor) / Barrett, The Honors College (Contributor)
Created2016-05