Pneumococci with increased resistance to penicillin.
نویسندگان
چکیده
منابع مشابه
Screening pneumococci for penicillin resistance.
Eighty-four pneumococci with various MICs of penicillin (38 with MICs of less than or equal to 0.06 micrograms/ml [susceptible], 35 with MICs of 0.12 to 1.0 micrograms/ml [relatively resistant], and 11 with MICs of greater than 1.0 micrograms/ml [resistant] ) were screened by a disk diffusion test using oxacillin and methicillin to see how well they distinguished penicillin-susceptible strains ...
متن کاملCarriage of penicillin resistant pneumococci.
A survey of 303 urban and 156 rural children showed nasopharyngeal carriage of relatively resistant Streptococcus pneumoniae organisms in 14.2% and 19.2% of children, respectively. These organisms have minimum inhibitory concentrations for penicillin in the range of 0.12-1 microgram/ml. An analysis of 40 relatively resistant S. pneumoniae strains showed resistance to co-trimoxazole in 47.5%, tr...
متن کاملPhenotypes and genes of resistance of pneumococci to penicillin isolated from children.
UNLABELLED (Full text is available at http://www.manu.edu.mk/prilozi). In recent decades, the increase of Streptococcus pneumoniae strains resistant to beta-lactams, to other classes of antimicrobial drugs and especially to penicillin (penicillin-resistant pneumococcus - PRP) has further complicated the treatment of pneumococcal infection. Penicillin resistance in pneumococci is due to the deve...
متن کاملA problem with the recognition of penicillin-resistant pneumococci.
A strain of Streptococcus pneumoniae requiring 0.25 mg/1 penicillin to inhibit its growth was isolated from the antrum of a child who had no history of either foreign contacts or previous treatment with penicillin. The penicillin resistance was recognised by chance because the disc used contained substantially less than its stated content of 1.5 unit. When discs containing 2 units were used the...
متن کاملA biological price of antibiotic resistance: major changes in the peptidoglycan structure of penicillin-resistant pneumococci.
Pneumococcal strains with greatly elevated levels of resistance to penicillin have by now been described with increasing frequency worldwide. The mechanism of antibiotic resistance in these strains involves the molecular remodeling of cell wall synthetic enzymes (penicillin binding proteins). We have now analyzed the peptidoglycan structures of 10 penicillin-susceptible and 10 penicillin-resist...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: BMJ
سال: 1973
ISSN: 0959-8138,1468-5833
DOI: 10.1136/bmj.3.5876.405-a