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Articles 1 - 5 of 5
Full-Text Articles in Medicine and Health Sciences
The Role Of Micrornas In The Pathophysiology Of Neonatal Hypoxic-Ischemic Brain Injury, Eric S. Peeples
The Role Of Micrornas In The Pathophysiology Of Neonatal Hypoxic-Ischemic Brain Injury, Eric S. Peeples
Theses & Dissertations
Neonatal hypoxic-ischemic brain injury (HIBI) is a devastating injury resulting from impaired blood flow and oxygen delivery to the brain at or around the time of birth. The subsequent metabolic failure and cellular injury in the brain can be partially attenuated by rapid initiation of therapeutic hypothermia, but even with prompt induction of hypothermia, more than one in four survivors suffer from major developmental disabilities – an indication of the critical need for more effective therapies. MicroRNAs (miRNA) may be able to act as therapeutic targets in neonatal HIBI; however, very little is known about the endogenous expression of miRNAs …
Development Of Long-Acting Antiviral Drug Nanoformulations, Denise Cobb
Development Of Long-Acting Antiviral Drug Nanoformulations, Denise Cobb
Theses & Dissertations
Antiretroviral therapy (ART) has improved the quality and duration of life for people living with human immunodeficiency virus (HIV) infection. However, opportunities to improve its profile abound. ART is limited by putative viral reservoir penetrance, emergence of viral mutations, inherent toxicities, and regimen non-adherence. These highlight the need improved drug delivery schemes. Previously, our lab has demonstrated that targeting mononuclear phagocytes for antiretroviral drug delivery extends drug half-life and improves penetrance into viral reservoirs, addressing these limitations of ART. Herein, we developed synthetic and biologic antiretroviral (ARV) drug nanocarriers improve the pharmacokinetic (PK) and pharmacodynamic (PD) profiles of ARVs through …
Exosomes Secreted Under Hypoxia Enhance Stemness In Ewing’S Sarcoma And Transform Microenvironment Cells, Matthew J. Kling
Exosomes Secreted Under Hypoxia Enhance Stemness In Ewing’S Sarcoma And Transform Microenvironment Cells, Matthew J. Kling
Theses & Dissertations
Intercellular communication between tumor cells and stroma within the hypoxic microenvironment promote aggressiveness and poor patient prognoses in ways that remain unclear. Here we show that hypoxic Ewing’s sarcoma (EWS) cells release exosomes that promote sphere formation, a stem-like phenotype, in EWS cells by enhancing survival and a cancer-associated phenotype in fibroblasts (CAFs). Given that hypoxia enriches for stem-like cells, we exposed EWS cells to hypoxia and hypoxic EWS-derived exosomes and assessed the stem cell phenotype. Hypoxia and hypoxic EWS-derived exosomewere found to enhance TIC formation in vitro and in vivo by reprogramming EWS cells. Analysis of the hypoxic exosomal …
The Role Of Extracellular Vesicles In Cancer-Related Fatigue And Its Co-Occurring Symptoms, Dilorom M. Sass
The Role Of Extracellular Vesicles In Cancer-Related Fatigue And Its Co-Occurring Symptoms, Dilorom M. Sass
Theses & Dissertations
Cancer survivors report many debilitating symptoms associated with cancer and its treatments. About 30% will report long-term cancer-related fatigue (CRF) which often co-occurs with depressive symptoms, sleep disturbances, cognitive fatigue, and poor overall health-related quality of life. The underlying causes of these co-occurring symptoms have been related to systemic processes such as inflammation. Extracellular vesicles (EVs) contain systemic markers such as genetic and protein materials that inform about cell-to-cell interactions that influence immune signaling and inflammatory processing. No study to date has explored the associations of EVs with cancer-related symptoms. So, the purpose of this dissertation was to investigate the …
Delivery Of Small Molecule And Rna Using Synthetic Polymeric Micelles And Multifunctional Exosomes For The Treatment Of Type 1 Diabetes, Yang Peng
Theses & Dissertations
Type 1 diabetes is one of the most challenging chronic autoimmune diseases. The destruction and dysfunction of insulin-secreting β cells are the results of inflammatory infiltration and the synergistic effect of multiple immune cells. The aim of this dissertation is to develop novel and reliable therapeutic approaches to advance the treatment of T1D: including chemical modification of a broad-spectrum immunosuppressant, co-application of small molecule based immune intervention and siRNA based β cell preservative therapy, and administration of a PI3K-δ/γ dual inhibitor to specifically target immune cells, utilizing synthetic polymeric micelles or natural produced multi-functional exosomes derived from human bone marrow …