نتایج جستجو برای: mexxy
تعداد نتایج: 106 فیلتر نتایج به سال:
عفونت¬های باکتریایی جزو عوامل اصلی مرگ و میر بویژه در جوامع در حال توسعه محسوب می¬شود. سودوموناس آئروژینوزا، عاملی عمده در بروز مرگ و میر در بیماران با ضعف سیستم ایمنی می¬باشد و مقاومت ذاتی به مواد ضد میکروبی سبب وخیم¬تر شدن وضعیت درمان عفونت¬های آن می¬شود. کینولون¬ها جزو بارزترین دسته مواد ضدمیکروبی سودوموناسی به شمار می¬رود. میکروارگانیسم با موتاسیون ژن¬های توپوایزومرازی و یا بیان بیشینه افلا...
Increasing prevalence and severity of multi-drug-resistant (MDR) bacterial infections has necessitated novel antibacterial strategies. Ideally, new approaches would target bacterial pathogens while exerting selection for reduced pathogenesis when these bacteria inevitably evolve resistance to therapeutic intervention. As an example of such a management strategy, we isolated a lytic bacteriophag...
Quinolone antibiotics constitute a clinically successful and widely used class of broad-spectrum antibiotics; however, the emergence and spread of resistance increasingly limits the use of fluoroquinolones in the treatment and management of microbial disease. In this study, we evaluated the quantitative contributions of quinolone target alteration and efflux pump expression to fluoroquinolone r...
BACKGROUND AND OBJECTIVES The prevalence of multidrug resistant Pseudomonas aeruginosa is the main reason of new drugs resurgence such as colistin. The main objectives of this study were to determine the antibiotic resistance pattern and the rate of colistin resistance along with its correlation with overexpression of MexAB-OprM and MexXY-OprM efflux pumps among P. aeruginosa isolates. MATERI...
Pseudomonas aeruginosa biofilms are intrinsically resistant to antimicrobial chemotherapies. At present, very little is known about the physiological changes that occur during the transition from the planktonic to biofilm mode of growth. The resistance of P. aeruginosa biofilms to numerous antimicrobial agents that are substrates subject to active efflux from planktonic cells suggests that effl...
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