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F P Roland

Publications and source records attributed to F P Roland.

12 recordsLinked to original sources
PubMed1977

Salt-starch xylose lysine deoxycholate agar. A single medium for the isolation of sodium and non-sodium dependent enteric gram-negative bacilli.

Salt dependent gram-negative bacilli responsible for gastroenteritis and tissue infections are often not recovered because proper media for isolation are not used. A salt-starch XLD agar with 1.5% NaC1 and 0.5% starch medium has been found to permit the isolation of pathogenic Enterobacteriaceae, non-Enterobacteriaceae gram-negative bacilli, and salt-dependent gram-negative bacilli, among which is Vibrio parahemolyticus. As far as the Enterobacteriaceae are concerned, the selectivity and sensitivity of the medium are the same as with standard media with the added advantage of isolating salt-dependent organisms, thereby saving time and money. It can be used for routine blood cultures, investigation of sea water, seafood and tissue infections related to marine activities.

Agar↗
PubMed1977

Interaction of blood with enterobacteriaceae: hemolysis, hemagglutination, fibrinolysis.

One thousand eighty enterobacteriaceae, isolated during a period of three months, were tested for the presence of hemolysis, hemagglutination and fibrinolysis on human erythrocytes and plasma. The fibrinolysis on human erythrocytes and plasma. The Escherichia coli have the greatest diversity of action on the blood. Of 481 strains, 32.9% were hemolytic, 21.9% fibrinolytic, and 10.5% hemagglutinating. Of 190 strains of Klebsiella, 95.2% were fibrinolytic. Of 53 strains of Enterobacter, 90.6% were fibrinolytic, and of 53 strains of Enterobacter hafniae, 66% were fibrinolytic. Of seven strains of Serratia, 28.5% were hemolytic and 14.3% fibrinolytic. The Proteae were mostly fibrinolytic: 60.5% of 141 strains, with three strains being hemolytic and fibrinolytic. Of 19 strains of Citrobacter, 52.6% were fibrinolytic only. Providenica, Salmonella and Shigella did not interact with human blood. The patterns of blood interactions with the different species of Enterobacteriaceae are of value in the evaluation of the pathogenesis of the infections and septicemias they cause. Their study is an essential step in the understanding of the sequence of events leading to severe disturbances of the blood-clotting mechanism.

Enterobacteriaceae↗