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Full-Text Articles in Life Sciences

Biophysical Studies Of Styrene-Maleic Acid Copolymer Stabilized Membrane Mimetics, Diane Yu May 2013

Biophysical Studies Of Styrene-Maleic Acid Copolymer Stabilized Membrane Mimetics, Diane Yu

University Scholar Projects

Traditional methods of isolating membrane proteins involve the use of detergents that destabilize the membrane environment. Biophysical studies of membrane proteins are challenged by the requirement of a stable membrane platform. Lipodisq® nanoparticles are novel membrane mimetics that consist of 3:1 styrene-maleic acid copolymer encircling phospholipids to form discoidal species on the order of 10 nm in diameter. Bacteriorhodopsin was previously incorporated into Lipodisq® nano-particles from its native purple membrane without the addition of detergent. In this study, dynamic light scattering was used to investigate the stability of empty Lipodisq® nano-particles over time. These data show that Lipodisq® nano-particles are …


The Effects Of Aging And Injury On The Murine Ependymal Barrier And Subventricular Zone, John Jeffrey Peters May 2013

The Effects Of Aging And Injury On The Murine Ependymal Barrier And Subventricular Zone, John Jeffrey Peters

University Scholar Projects

Previous research has shown that numerous age-related changes occur in the subventricular zone (SVZ) and diminish the neurogenic output of the region. Here, various agerelated changes in the structure of the lateral ventricle, the ependymal barrier, and the SVZ were examined. It was found that the walls of the lateral ventricles move together, adhere, and eventually fuse. This results in a degradation of the SVZ. Other changes associated with aging were found, including ependymal cell stretching, heightened, ependymal repair, changes in CSF flow velocity and dynamics, and altered ependymal cell polarity. These changes may be related to the process of …