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Biomedical subjects

R R Marples

Publications and source records attributed to R R Marples.

98 records · Page 6Linked to original sources
PubMed1969

Effects of systemic demethylchlortetracycline on human cutaneous microflora.

The aerobic flora of the axilla and forehead of 20 normal human subjects was studied through a 3-week course of 600 mg of demethylchlortetracycline daily and a 3-week follow-up. In general in the axilla, an initial fall in bacterial density was followed by recovery in numbers due to the proliferation of resistant coagulase-negative cocci and diminution of the lipophilic diphtheroid group of bacteria within 1 week of treatment. During the remainder of the treatment period, the flora was essentially stable in both density and composition. In the follow-up phase, the initial flora was slowly re-established but resistant cocci persisted for more than 3 weeks. On the forehead the fall in density was slower and recovery during treatment was incomplete. Resistant coagulase-negative cocci became dominant and persisted through the follow-up phase. In two individuals, temporary colonization of the axilla by Staphylococcus aureus was seen.

Axilla↗
PubMed1969

Violagabriellae variant of Staphylococcus epidermidis on normal human skin.

Twenty-seven strains of a reddish violet pigment-producing variety of Staphylococcus epidermidis have been recovered from normal human skin. They closely resemble the previously unique Castellani strain, named Micrococcus violagabriellae, which was placed by K. J. Steel in S. epidermidis. These strains are classified as S. epidermidis by using the Baird-Parker schema; however, besides the pigment produced, they also differ from S. epidermidis in proteolytic activity and effect on litmus milk. The variety seems to be part of the normal flora of the human axilla.

Adult↗