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Biomedical subjects

M J Raff

Publications and source records attributed to M J Raff.

At least 55 records · Page 3Linked to original sources
PubMed1980

Splenic abscess.

Fourteen cases of splenic abscess are reported and 159 cases previously cited in the literature are reviewed. The incidence, predisposing factors, pathogenesis, clinical features, bacteriology and radiologic findings are discussed. Infective endocarditis was the most common single antecedent infection. Hemoglobinopathies, non-penetrating abdominal trauma, and gastrointestinal malignancy appear to predispose the spleen to abscess formation. Emphasis is placed on clinical features and radiologic findings to aid practitioners in diagnosing this uncommon but often fatal infection. Also emphasized is the necessity for prompt surgical intervention when splenic abscess is suspected. An approach to the antimicrobial therapy in different clinical settings is outlined.

Abscess↗
PubMed1980

R-factor responsible for an outbreak of multiply antibiotic-resistant Klebsiella pneumoniae.

Seven serotypes of Klebsiella pneumoniae isolated from different patients demonstrated resistance to the same eight antibiotics. A plasmid carrying resistance determinants to these antibiotics and mercury salts could be transferred in toto to a plasmidless strain of Escherichia coli. All E. coli transconjugants showed the same antibiotic resistance pattern. Digestion with restriction endonucleases yielded patterns that were identical for each of the R-factor transferred from the multiply resistant serotypes. Moreover, deoxyribonucleic acid-deoxyribonucleic acid hybridization demonstrated identity between the probe, pMAC20 (an R-factor from one serotype), and all R-factors isolated from the multiply resistant strains of K. pneumoniae and the E. coli transconjugants tested.

Anti-Bacterial Agents↗