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Medicine and Health Sciences Commons

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Medical Sciences

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Theses/Dissertations

2019

Metabolism

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Full-Text Articles in Medicine and Health Sciences

Monocyte Anti-Inflammatory Activity Is Dictated By Metabolic Status During Staphylococcus Aureus Biofilm Infection, Kelsey J. Yamada May 2019

Monocyte Anti-Inflammatory Activity Is Dictated By Metabolic Status During Staphylococcus Aureus Biofilm Infection, Kelsey J. Yamada

Theses & Dissertations

Staphylococcus aureus biofilms represent a significant cause of morbidity and economic burden and are often associated with nosocomial infections, including medically implanted devices. In particular, prosthetic joint infections (PJIs) are a growing concern due to the continued increase in orthopedic procedures. Staphylococcal species cause >50% of all PJIs, while S. aureus represents the most invasive and associated with the most morbidity. S. aureus-associated biofilm infections are recalcitrant to antibiotic therapy, due to both the acquisition of genetic elements and metabolic dormancy. Furthermore, S. aureus biofilm infections remain chronic because they cannot be cleared by the immune system. Recent studies …


The Role Of The St6gal-I Sialyltrasferase In Protecting Tumor Cells From Hypoxic Stress, Robert Brent Jones Jan 2019

The Role Of The St6gal-I Sialyltrasferase In Protecting Tumor Cells From Hypoxic Stress, Robert Brent Jones

All ETDs from UAB

An emerging concept in cancer biology is that surface glycosylation can play important roles in the regulation of cancer development and progression. Our group and others have shown that ST6Gal-I, a sialyltransferase that adds α2-6-linked sialic acids to N-glycosylated proteins, is upregulated in many cancers. Furthermore, data has indicated that ST6Gal-I acts as a pro-survival factor in a variety of settings, including resistance to chemotherapeutic drugs, radiotherapy resistance, and serum deprivation. The work presented in this dissertation adds to this understanding of ST6Gal-I’s role as a potent pro-survival factor and explores ST6Gal-I’s function in aiding tumor cells to survive hypoxic …