By D. S. Stephens, Zell A. McGee (auth.), Professor Dr. Dr. med. Dieter Adam, Professor Dr. med. Helmut Hahn, Professor Dr. med. Wolfgang Opferkuch (eds.)
The moment foreign Symposium on "The impression of Antibiotics at the Host Parasite dating" was once held in Munich, F. R. G. , from March 28 to 30,1985. the themes of the assembly handled the elements of alterations in bacterial metabolism and constitution which happen less than the effect of antibiotics, and with the results of such adjustments at the antibacterial host resistance. The impression on pathogenicity elements, alterations within the outer membrane of micro organism, in addition to the impression at the person elements of the defence procedure have been analysed intimately. furthermore, those reviews confirmed that antibiotics proved to be a great device for the exam of bacterial body structure, in order that, 50 years after the creation of antibiotics, extra vital wisdom will be won concerning the impression of those components on micro organism. contemplating the observations mentioned, apparently justifiable to postulate that new antibiotics might be in many instances verified with appreciate to their attainable results on antiinfectious resistance. after all, a consensus should be came across on which to base equipment and standards employ€d. The symposium documented an expanding curiosity of microbiologists and clini cians for this box of analysis. it's going to now not were attainable to arrange it with no the gigantic aid of the Paul Ehrlich Society in addition to of Squibb-Von Heyden Pharma, Inc. specific aid in regards to the association has been given through Werner Kremer of Squibb-Von Heyden Pharma.
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Additional resources for The Influence of Antibiotics on the Host-Parasite Relationship II
Schindler PRG, Teuber M (1975) Action of polymyxin B on bacterial membranes: morphological changes in the cytoplasm and in outer membrane of Salmonella typhimurium and Escherichia coli 13. Antimicrob Agents Chemother 8: 95-104 10. Vaara M, Vaara T (1983) Polycations as outer membrane-disorganizing agents. Antimicrob Agents Chemother 24: 114-122 11. Newton B A (1953) The release of soluble constituents from washed cells of Pseudomonas aeruginosa by the action of polymyxin. J Gen Microbiol 9: 54-64 12.
Pneumoniae is increased when bacterial cells are grown in the presence of cephalosporins . In this study, we have obtained preliminary evidence that filamented bacteria, because of ~-lactam action are more liable to phagocytosis than non filamented cells by rabbit PMNs. Similar observations have been reported by other workers . In addition to any direct lytic activity of ~-lactam antibiotics, it appears that in an iron restricted in vivo environment some strains of pathogens may be handicapped by an action on surface antigens and iron uptake.
1. Ciprofloxacin at concentrations of 0,1 mcg/ml showed a rapid bactericidal effect with E. coli. After 3 hours the initial number of viable bacteria were reduced by about 5 logs. 025 mcg/ ml reduced the number ob viable bacteria by 99% within 2 hours. A strong bactericidal effect was also seen with Pseudomonas at 2,0 mcg/ml. Also 0,5 mcg/ml killed more than 99% of the initial inoculum within 2 hours. With Staphylococcus, a slower killing effect was observed even at the high concentration of 4 mcg/ml although 0,5 mcg/ml resulted in a good bactericidal effect already, which reached its maximum after 5 hours.
The Influence of Antibiotics on the Host-Parasite Relationship II by D. S. Stephens, Zell A. McGee (auth.), Professor Dr. Dr. med. Dieter Adam, Professor Dr. med. Helmut Hahn, Professor Dr. med. Wolfgang Opferkuch (eds.)