Drugs online research references
Antimicrob Agents Chemother. 1994 Nov;38(11):2628-32.
Susceptibilities of Mycoplasma hominis, Mycoplasma pneumoniae, and Ureaplasma urealyticum to new glycylcyclines in comparison with those to older tetracyclines.
Kenny GE, Cartwright FD.
Department of Pathobiology, School of Public Health and Community Medicine, University of Washington, Seattle 98195.
The glycylcyclines are new tetracycline derivatives that include the N,N-dimethylglycylamido derivative of minocycline (DMG-MINO) and the N,N-dimethylglycylamido derivative of 6-demethyl-6-deoxytetracycline (DMG-DMDOT). The susceptibilities of Mycoplasma pneumoniae, Mycoplasma hominis, and Ureaplasma urealyticum to DMG-MINO, DMG-DMDOT, tetracycline, doxycycline, and minocycline were determined by the agar dilution method. The glycylcyclines with MICs at which 50% of the isolates are inhibited of 0.25 to 0.5 micrograms/ml for M. pneumoniae were two- to fourfold more active than tetracycline and had the same activity as minocycline and doxycycline. Tetracycline-susceptible M. hominis strains were four- to eightfold more susceptible to the glycylcyclines (0.12 to 0.25 micrograms/ml) than to tetracycline. Strains of M. hominis known to be resistant to tetracycline, doxycycline, and minocycline because of the tet(M) determinant were as susceptible to the glycylcyclines as the tetracycline-susceptible strains. For tetracycline-susceptible U. urealyticum strains, the glycylcyclines showed the same activity as tetracycline (MICs at which 50% of the isolates are inhibited of 1 to 2 micrograms/ml). Tetracycline-resistant strains of U. urealyticum were resistant to doxycycline and minocycline and showed variable susceptibility to the glycylcyclines (range, 0.5 to 32 micrograms/ml). In view of the increasing resistance of M. hominis and U. urealyticum strains to tetracyclines, the glycylcyclines have promise, pending assessment of their pharmacokinetic and safety profiles.
online pharmacy ref source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=7872759&dopt=Abstract
Antimicrob Agents Chemother. 1994 Nov;38(11):2651-4.
In vitro antimycoplasmal activities of rufloxacin and its metabolite MF 922.
Furneri PM, Bisignano G, Cerniglia G, Nicoletti G, Cesana M, Tempera G.
Institute of Microbiology, University of Catania, Italy.
The in vitro activities of rufloxacin and its metabolite, MF 922, were compared with those of ofloxacin, ciprofloxacin, erythromycin, and minocycline against Mycoplasma pneumoniae, Mycoplasma hominis, Mycoplasma fermentans, and Ureaplasma urealyticum. Rufloxacin, MF 922, and ciprofloxacin shared similar activities against all mycoplasmas tested. (MICs for 90% of isolates tested [MIC90s], 0.5 to 4 micrograms/ml. Ofloxacin had the lowest MIC90s for U. urealyticum, M. fermentans, and M. hominis (MIC90s, 0.25 to 1 micrograms/ml) and erythromycin had the lowest MIC90 for M. pneumoniae (MIC90, 0.004 micrograms/ml).
online pharmacy ref source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=7872762&dopt=Abstract
Am J Respir Crit Care Med. 1995 Mar;151(3 Pt 1):791-4.
Temporal evolution of pleural fibrosis induced by intrapleural minocycline injection.
Sassoon CS, Light RW, Vargas FS, Gruer SE, Wang NS.
Department of Medicine, Veterans Affairs Medical Center, Long Beach, CA 90822.
Minocycline is as effective as tetracycline in inducing pleural fibrosis, but the long-term pleural changes induced by minocycline are unknown. The objective of this study was to evaluate in rabbits the evolution of the pleural changes induced by the intrapleural instillation of minocycline. Under light anesthesia, minocycline at 10 mg/kg in a total volume of 2 ml of bacteriostatic saline solution was injected into the right pleural space of 25 male rabbits. The animals were sacrificed in groups of five at 15 d and 1, 2, 4, and 6 mo. Macroscopic and microscopic examinations of the pleura were performed for evidence of pleural fibrosis and inflammation. Similarly, the underlying lung was also examined for microscopic alveolar fibrosis and inflammation. During the 6-mo observation period there was no significant change in the degree of pleural fibrosis. In contrast, microscopic pleural inflammation, alveolar fibrosis, and alveolar inflammation all decreased significantly over the observation period. In conclusion, intrapleural minocycline injection results in persistent pleural fibrosis at 6 mo. It remains to be determined whether the pleural fibrosis will persist beyond this period.
online pharmacy ref source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=7881672&dopt=Abstract
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