Medicine and Health Sciences Commons^™

Unravelling The Potential Applications Of Extracellular Vesicles For The Clinical Management Of Melanoma Patients, Michael Edward Clark

Theses: Doctorates and Masters

Metastatic melanoma is the third most common cancer in Australia with global incidence increasing. After decades without effective systemic treatments for advanced melanoma, the advent of targeted and immune therapies has substantially improved patient survival. While this is encouraging, further research is needed as the majority of patients treated with targeted therapy ultimately develop drug resistance. Immunotherapy can achieve durable responses in many patients however, not all patients respond to current single or a combination of immune checkpoint inhibitors. Considering the cost and potential toxicities to patients being treated with these therapies, there is an urgent need to develop biomarkers …

Assessment Of The Clinical Validity Of Ctdna Analysis For Melanoma Management, Anda-Gabriela Marsavela

Theses: Doctorates and Masters

Metastatic melanoma is responsible for almost 80% of all skin cancer-related deaths and the incidence of people affected continues to rise worldwide. The emergence of targeted therapy and immune-checkpoint inhibitors has improved the clinical management of melanoma, but durable survival benefit is only seen in a minority of patients. The use of these very expensive systemic therapies on all appropriate patients also poses a high economic burden on health systems across numerous countries. Currently, surveillance for treatment failure is not optimal. Thus, reliable and accurate biomarkers of patient disease status are urgently required.

Circulating tumour DNA (ctDNA) analysis has emerged …

Quantifying The Heterogeneity Of The Immunoglobulin G N-Glycome In An Ageing Australian Population: The Busselton Healthy Ageing Study, Alyce Russell

Theses: Doctorates and Masters

The use of immunoglobulin G N-glycomics to study chronic non-communicable disorders and other complex phenotypes emerged following the Human Genome Project. The consortium discovered that most phenotypes were too complex to be explained by genetics alone. Thus, the biological importance of epigenetics was recognised; heritable modifications to gene expression rather than the genome itself. Nglycosylation is a form of epigenetic regulation known as a post-translational modification. It stabilises the immunoglobulin G structure and alters downstream responses elicited by the antibody and is extensively studied as a candidate biomarker in the post-genomic era.

The N-glycosylation of immunoglobulin G itself is complex, …

Epidemiological Model Of The Transmission And Spread Of Hepatitis B Pandemic In Ghana, Kwaafo Akoto Awuah-Mensah

Theses: Doctorates and Masters

The world's attention to the burden and spread of hepatitis B has increased signicantly in the recent past. A number of interventions by way of treatment and immunisation have been initiated to fight the pandemic, especially in high prevalence regions such as Africa and Asia. Lack of good quality information about hepatitis B is a major hindrance to policy direction and comprehensive implementation of interventions in Sub-Saharan Africa designated as an endemic region. Limited studies on hepatitis B, coupled with lack of adequate health care systems and infrastructure, have led to ignorance or misconceptions and stigmatisation about the disease and …

The Utility Of Multidisciplinary Rehabilitation As A Treatment Strategy For Circadian Rhythm And Sleep Disturbances In Premanifest Huntington’S Disease, Danielle Megan Bartlett

Theses: Doctorates and Masters

Background: Huntington’s disease (HD) is a rare, neurodegenerative disease caused by an expanded cytosine-adenine-guanine (CAG) sequence in the Huntingtin gene, resulting in the production of an aberrant protein, mutant huntingtin (mHTT). The mHTT protein exhibits a toxic loss and gain in function, leading to degeneration of neurons in the brain. Consequently, the classic triad of motor, cognitive and mood features of the disease develop. Among the earliest features of HD are circadian rhythm and sleep disturbances. These anomalies present many years prior to formal clinical diagnosis of HD and, while it has been postulated that these disturbances arise as a …

A Nested Environmental Approach To Typhoid Epidemiology In Central Division, Fiji, Aaron Jenkins

Theses: Doctorates and Masters

Many current disease threats involve interactions within and between nested subsystems of biological organisation. Typhoid fever is a serious disease threat in the South Pacific region, with Fiji reporting the highest annual number of cases, yet risk factors in this setting have been poorly studied. While localised behaviours have dominated perspectives on typhoid transmission, interactions between distal ecological conditions, conditions of the residential environment and localised behaviour deserve greater attention for their potential to influence transmission. This thesis demonstrates a nested approach to typhoid epidemiology using a fivefold methodology to explore how regional, river basin, residential, socio-cultural and behavioural subsystems …

The Clinical Utility Of Multidisciplinary Rehabilitation In Individuals With Huntington’S Disease, Travis Miles Cruickshank

Theses: Doctorates and Masters

Background

Huntington’s disease (HD) is a chronic neurodegenerative disorder characterised by a progressive loss of cognitive function, motor control and psychiatric features. Individuals also display a variety of systemic features. Progressive neuronal dysfunction and neuronal cell death are thought to underlie the onset and progression of many clinical features of HD.

Despite scientific progress, there is still no cure or disease modifying therapy for HD, and available pharmaceutical agents only provide partial relief of motor and psychiatric features. An emerging body of evidence indicates that lifestyle enrichment may delay the onset and progression of clinical features, and exert favourable effects …

The N-Glycosylation Of Immunoglobulin G As A Novel Biomarker Of Parkinson’S Disease, Alyce Christine Russell

Theses: Doctorates and Masters

For neurodegenerative diseases, interventions during the early stages of the disease, before significant neurodegeneration has occurred, are associated with an increased probability of slowing or halting the disease process. In order to intervene early, it is essential that an accurate diagnosis is obtained and that disease progression can be monitored. This is particularly relevant for Parkinson’s disease (PD; International Classification of Diseases version 10) because significant neurodegeneration has already occurred by the time the clinical motor symptoms are present. Therefore, the development of translatable, high-throughput biomarkers for large scale population screening is a crucial area of research. Of promise are …

The Identity Of The Heart Patient In The Context Of The Gift Economy: Heartnet And Media Framing, Lynsey Uridge

Theses: Doctorates and Masters

This health communication research examines the identity levels of the heart patient on a therapeutic website HeartNET through an empirical investigation of site interactions as manifestations of a gift economy. The thesis also explores the media’s representation of heart health in both television and print.

This research utilised a longitudinal qualitative ethnographic and netnographic approach involving twenty-six participants who completed two in-depth interviews. The first one-on-one interview occurred during the early stages of the participants’ heart journey, explored their heart story and use of interactive technology for heart health support. The second interview occurred six to twelve months later, and …

Plasma Insulin-Degrading Enzyme: Characterisation And Evaluation As A Potential Biomarker For Alzheimer's Disease, Michelle Tegg

Theses: Doctorates and Masters

Alzheimer’s disease (AD) is increasing in prevalence due to increasing lifespan and altered lifestyle. It is the fourth major cause of death in Western countries, resulting in significant economic and social impact (Von Strauss, et al., 1999; Goate, 1997). There are no blood biomarkers currently accepted for the diagnosis of AD, and the identification of suitable biomarkers would eventually reduce the necessity for invasive, expensive and slow diagnostic procedures, as well as facilitate prognostic studies. An AD blood test would decrease the need for delaying diagnosis due to ambivalent presentation, and allow therapeutic intervention to commence at an earlier …

Investigating The Impact Of Cd147 And Its Expression On Neurodegenaration And Alzheimer's Disease (Ad), Limbikani J. Kanyenda

Theses: Doctorates and Masters

CD147, also known as basigin, extracellular matrix metalloproteinase inducer, neurothelin, tumour cell-derived collagenase stimulatory factor, M6, HT7, OX47 or gp42, is a transmembrane glycoprotein of the immunoglobulin super-family. It is expressed in many neuronal and non-neuronal tissues with high expression in the hippocampus, pre-frontal cortex, thyroid, heart, early erythroid, amygdala and placenta. This protein is involved in various cellular and biological functions such as lymphocyte migration and maturation, tissue repair, cancer progression, T and B lymphocyte activation and induction of extracellular matrix metalloproteinase. The CD147 protein interacts with with cyclophilin A, cyclophilin B, sterol carrier protein, caveolin-1 and integrins, and …

New Perspectives On Melanoma: The Role Of Pax3, Sandra Medic

Theses: Doctorates and Masters

Background: Cutaneous melanoma is an aggressive form of skin cancer, arising in cutaneous melanocytes. The transcription factor PAX3 is critical for the proper development of neural crest lineages including melanocytes. Melanocytic cells show continued PAX3 expression from melanoblast formation in the neural crest to their differentiation into melanocytes. While many studies clarify the importance of PAX3 in embryonic development of melanocytes, less well understood, and more perplexing, is the continued PAX3 expression in adult skin melanocytes. By contrast PAX3 is frequently found in melanomas and naevi, and its expression correlates with melanoma staging. In this study we explore the multiple …

Occupational Respiratory Health Surveillance At Minara Resources, Murrin Murrin Mine Site, Martyn Cross

Theses: Doctorates and Masters

This thesis outlines the results of occupational respiratory health surveillance at Minara Resources, Murrin Murrin mine site. The research was conducted as part of a collaborative agreement between Edith Cowan University and Minara Resources, the overarching title of which was ‗Establishing best practice protocols in the management of occupational and environmental health in a high-risk mining and ore-processing environment‘. To form the basis of this research it was hypothesised that although the chemical hazards had been adequately identified, and the occupational exposures in each work area at Murrin Murrin were generally well below their respective occupational exposure levels, it was …

Networks And Narratives: An Exploration Of Their Relationship And Potential For Understanding The Actual Experiences Of Women With Hiv/Aids, Purity N. Irungu

Theses: Doctorates and Masters

This study set out to examine literature relating to social network theory and narrative theory in order to explore how their potential connection could be used in future to understand and improve the actual life-experiences of women infected by the Human Immunodeficiency Virus (HIV) and Acquired Immune Deficiency Syndrome (AIDS). The thesis was done entirely by library research using secondary sources but is original in its intent. It includes a critical examination of some of the work of earlier researchers, including Lockhart's (2000) anthropological study of the social construction of `risk' of AIDS in urban Tanzania. Much previous research studied …

Resistance Exercise In Men Receiving Androgen Deprivation Therapy For Prostate Cancer, Daniel A. Galvao

Theses: Doctorates and Masters

This thesis encompasses two literature reviews (chapter 2 & 3) and two experimental chapters (4 and 5) examining the available literature on exercise and cancer, resistance training and its anabolic responses in older men and women, the side effects of Androgen Deprivation Therapy (ADT) for prostate cancer and finally, the role of resistance exercise as a clinical intervention to counteract such changes as an adjuvant therapy.

Fear, Frustration And The Will To Overcome: A Social History Of Poliomyelitis In Western Australia, John H. Smith

Theses: Doctorates and Masters

This thesis investigates community responses to Poliomyelitis, and the Impact of the disease on those who experienced It, particularly during the epidemics that occurred In Western Australia between 1938 and 1956. The research sources an.: W.A. Health Department records, held mostly at the Battye Library, records held by Australian Archives and Royal Perth Hospital, newspaper reports, comparative studies from several states in Australia and overseas, oral history interviews, biographies and personal records. The history of polio has several layers and the presence or the disease In the community evoked varied and ambiguous reactions, summarised here as fear, frustration and the …