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Biomedical subjects

F A Rommel

Publications and source records attributed to F A Rommel.

12 recordsLinked to original sources
PubMed1981

Contagious equine metritis: antibody response of experimentally infected pony mares.

Intrauterine inoculation of pony mares with the bacterium that is the causative agent of contagious equine metritis (CEM) resulted in clinical disease. A humoral immune response could be detected by agglutination and complement fixation (CF), and in some cases precipitating antibody was found by immunodiffusion tests. Agglutinating antibody was the most reliable serological indicator of overt infection and was detected in 8 ot 28 mares after initial intrauterine inoculation of 3-4 x 10(5) bacteria. Seventy percent of mares given a second inoculation and all mares given a third inoculation of 3-4 x 10(5) bacteria produced detectable agglutinating antibody. Only two of five mares given the third inoculation developed detectable complement-fixing antibody. Only one mare showed evidence of reinfection after a second or third intrauterine inoculation. All of the mares given a single intrauterine inoculum of greater than or equal to 8 x 10(8) bacteria produced agglutinating antibody 10 to 30 days postinoculation (DPI) and 86% gave a positive CF test 10 to 20 DPI. Only mares with an agglutination titer of 320 or more produced precipitating antibody. Sera were considered positive in agglutination tests if they were reactive at a dilution of greater than 4 and positive in CF tests if they were reactive at a dilution of 4 or greater.

Animals↗
PubMed1980

Hemolytic complement in nonhuman primates.

Hemolytic serum complement activity was quantitatively compared in baboons, squirrel monkeys, cebus monkeys, and cotton-top marmosets. Squirrel monkeys showed the highest activity, and marmosets had the lowest activity. The complement level in squirrel monkeys and tenfold greater than marmosets and almost four times higher than that of man. Cebus monkeys had levels most similar to that of man while the baboon exhibited activity almost as low as that of the marmoset.

Animals↗
PubMed1979

Survival of contagious equine metritis bacteria in transport media.

Survival of bacteria that cause contagious equine metritis (CEM) was evaluated in Amies modified transport (AMT) medium, in AMT medium with charcoal, and in Stuart transport medium at 37, 22, 4, and -70 C. The CEM bacteria suspended in transport media survived at 22, 4, and -70 C for longer periods in AMT medium with charcoal than they did in AMT and Stuart transport media. In 1 day, the number of bacteria in exudate stored in the absence of any transport medium decreased 15-fold at 22 C and twofold at 4 C. The CEM bacteria were isolated from exudate on cotton-tipped swabs from all three transport media at 4 and -70 C on day 10, the termination of the experiment. However at 4 C, the survival of CEM bacteria was greater in AMT medium with charcoal than it was in AMT and Stuart transport media.

Animals↗
PubMed1976

The isolation of Vibrio parahaemolyticus and related vibrios from moribund aquarium lobsters.

Vibrios were isolated in pure culture from the hemolymph of 7 out of 28 dead or dying aquarium lobsters which had been acclimated to 20-22 degrees C. One isolate was identified as Vibrio parahaemolyticus, one as a related marine Vibrio (probably V. marinus), and five as Vibrio alginolyticus. No isolates of halophilic Vibrio species were made from healthy lobsters using thiosulfate citrate bile salts sucrose agar (TCBS).

Animals↗
PubMedDate not supplied

A comparison study between ragweed-specific IgG4 as measured by RAST and FAST.

A solid phase Sepharose-based RIA (IgG4 RAST) was compared to the IgG4 FAST enzyme immunoassay for measurements of Ragweed-specific IgG4. Although FAST reagents were used, a standard serum of known antibody content along with modifications in the FAST assay were necessary to attempt to develop a quantitative assay. Various assay parameters such as precision, reproducibility, sensitivity and parallelism were examined. Specificity of the monoclonal anti-IgG4 used in the FAST was not evaluated. Conditions and method of assay for the two systems differed substantially, particularly in the short incubation times for the IgG4 determinations.

Allergens↗