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Full-Text Articles in Cell Biology

Establishing And Validating Methods To Assess The Influence Of Exercise On Circulating Exosome Profiles In Sedentary Older Adults, Heather Quiriarte Mar 2021

Establishing And Validating Methods To Assess The Influence Of Exercise On Circulating Exosome Profiles In Sedentary Older Adults, Heather Quiriarte

LSU Master's Theses

Aging is associated with progressing cellular structural and functional changes, and sedentary behavior can exacerbate these hallmarks of aging. Routine exercise is known to have beneficial effects on physiological systems, but the exact molecular mechanisms behind the health benefits are unclear. Emerging evidence suggests extracellular vesicles called exosomes are involved in the intercommunication between cells and organs following exercise by delivering their cargo such as proteins and miRNAs. miRNA profiles in older adults following acute and chronic exercise need further exploration. Specifically, the effects of regular low-intensity physical activity (LPA) breaks in sedentary time on proteins and miRNA packaged in …


5-Lipoxygenase (5-Lox)-5-Lipoxygenase Activating Protein (Flap)-Nanodisc Complex: A Model For The 5-Lox-Flap Interaction, Erin Elizabeth Schexnaydre Mar 2018

5-Lipoxygenase (5-Lox)-5-Lipoxygenase Activating Protein (Flap)-Nanodisc Complex: A Model For The 5-Lox-Flap Interaction, Erin Elizabeth Schexnaydre

LSU Doctoral Dissertations

Leukotrienes (LT) are lipid mediators of the inflammatory response that play important roles in diseases such as asthma and atherosclerosis. Leukotriene A4 (LTA4) is synthesized from arachidonic acid (AA) by 5-lipoxygenase (5-LOX) with the help of 5-lipoxygenase activating protein (FLAP), a trimeric nuclear transmembrane protein. Exactly how 5-LOX and FLAP interact is not well understood, however FLAP is essential for the production of leukotrienes in vivo. I used nanodiscs (NDs), engineered membrane systems, as a tool to study the 5-LOX-FLAP interaction. FLAP was incorporated into NDs with a phospholipid composition to mimic of the nuclear membrane. Structural features …