Tetracycline resistance in group a streptococci: emergence on a global scale and influence on multiple-drug resistance.
نویسندگان
چکیده
A global sample of group A streptococci (GAS) revealed > or =80 separate acquisitions of tetracycline resistance. Of 244 clones, 38 and 25% displayed resistance to tetracycline and erythromycin, respectively; a relatively high proportion (15%) were resistant to both classes of drugs. tet(M) displayed a highly significant association with erm(B).
منابع مشابه
Artificial elimination of drug resistance from group A beta-hemolytic streptococci.
Ten strains of beta-hemolytic streptococci were tested for elimination of resistance to macrolide antibiotics, tetracycline, and chloramphenicol. Six of the strains lost resistance after cultivation at 41 C or addition of acriflavine (0.2 mug/ml). These results suggest that determinants governing resistance to these antibiotics are located on extrachromosomal genetic elements (plasmids) that ar...
متن کاملGenetic basis of tetracycline resistance in clinical isolates of Listeria monocytogenes.
The genetic basis of tetracycline resistance was studied in 25 clinical isolates of Listeria monocytogenes. Resistance to tetracycline was associated with resistance to minocycline and due to the presence of the tet(M) gene in 24 strains. Association of tet(M) with int-Tn, the gene encoding the protein required for the movements of Tn1545-like conjugative transposons, was found in all strains. ...
متن کاملHelicobacter pylori in Iran: A systematic review on the antibiotic resistance
Objective(s):Helicobacter pylori (H. pylori) is a pathogenic bacterium that colonizes the stomachs of approximately 50% of the world’s population. Resistance of H. pylori to antibiotics is considered as the main reason for the failure to eradicate this bacterium. The aim of this study was to determine the rate of resistant H. pylori strains to various antimicrobial agents in different areas of ...
متن کاملبررسی صحت تشخیص بالینی فارنژیت استرپتوککی در بیماران مراجعه کننده به بیمارستان‌های زنجان
Background and Objective: Streptococcal pharyngitis is one of the most common bacterial infections that its improper treatment could lead to complications such as heart and kidney problems. Although streptococcal pharyngitis makes up a low percentage of pharyngitis etiology, penicillin derivatives are prescribed for many of the patients with pharyngitis. The aim of this study was to determine t...
متن کاملAtypical anaerobic forms of Streptococcus pyogenes associated with tetracycline resistance.
The emergence of Streptococcus pyogenies resistant to the tetracycline antibiotics has been noted occasionally during the treatment of streptococcal infection of burns with oral chlortetracycline (Lowbury and Cason, 1954). These resistant strains grew well under aerobic or anaerobic conditions. More recently, however, we have isolated from a number of burned patients streptococci which failed t...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Antimicrobial agents and chemotherapy
دوره 51 5 شماره
صفحات -
تاریخ انتشار 2007