Portland State University. Department of Biology
Mary L. Taylor
Term of Graduation
Date of Publication
Master of Science (M.S.) in Biology
Iron proteins -- Physiological effect, Salmonella, Bacteremia
1 online resource (2, vi, 60 pages)
I have investigated the possibility that specific conalbumin (ovotransferrin) iron saturation levels enable less virulent strains of Salmonella to become more virulent. Iron starved cells of two pathogenic Salmonella strains, S. paratyphi B var. java and S. thompson, were cultured in iron limited media at 3 different iron conalbumin saturation levels. Results indicate that strains differ significantly at both low and high iron saturation conalbumin. These differences depict a growth advantage for S. paratyphi B which correlates with reports by the Centers for Disease Control that S. paratyphi B was 3 times more frequent in blood isolates than S. thompson. The ability to use protein bound iron may account for the higher involvement of S. paratyphi B in bacteremia.
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Mason, John Nicholas, "Effects of Conalbumin Bound Iron on the Growth of Salmonella paratyphi B and Salmonella thompson" (1991). Dissertations and Theses. Paper 4381.