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Examination Of Strain-Dependent Differences In S. Sanguinis Virulence And Growth, Shannon Baker
Examination Of Strain-Dependent Differences In S. Sanguinis Virulence And Growth, Shannon Baker
Theses and Dissertations
Streptococcus sanguinis, an abundant and benign inhabitant of the oral cavity, is an important etiologic agent of infective endocarditis, particularly in people with pre-disposing cardiac valvular damage. Although commonly isolated from patients with IE, little is known about the factors that make any particular S. sanguinis isolate more virulent than another or, indeed, whether significant differences in virulence exist among isolates. To investigate the virulence of multiple isolates, a variation of the Bar-seq (barcode sequencing) method was employed. A conserved chromosomal site was identified for subsequent insertion of a barcode identifier, unique for each strain. Barcode insertion did not …
Long-Term Effects Of Notch1 Signaling On Neural Stem Cells Following Traumatic Brain Injury, Cruz Sevilla Jr
Long-Term Effects Of Notch1 Signaling On Neural Stem Cells Following Traumatic Brain Injury, Cruz Sevilla Jr
Theses and Dissertations
Traumatic brain injury (TBI) is a devastating problem which stands as a leading cause of death and disability. The elderly is significantly affected by TBI, typically as the result of falls, and recovery is especially limited. This, in part, is associated with decreased tissue-specific stem cell regeneration and replacement of damaged cells in the aged brain. The diminished ability of the aged brain to recover is especially devastating after TBI, likely leading to permanent loss of sensory, motor, and cognitive functions. Studies have shown that the mature mammalian brain contains Neural Stem Cells (NSCs), found in specific regions of the …