نتایج جستجو برای: ژن gyrb
تعداد نتایج: 16650 فیلتر نتایج به سال:
Tuberculosis and other bacterial diseases represent a significant threat to human health. The DNA topoisomerases are excellent targets for chemotherapy, and DNA gyrase in particular is a well-validated target for antibacterial agents. Naphthoquinones (e.g. diospyrin and 7-methyljuglone) have been shown to have therapeutic potential, particularly against Mycobacterium tuberculosis. We have found...
نمونه هایی از برگ و سرشاخه های لیموترش، با علائم بیماری شانکر باکتریایی مرکبات در بهار و تابستان 1391، از استان ایلام جمع آوری گردید. باکتری عامل بیماری با روش های متداول از بافت آلوده جداسازی و بر اساس ویژگی های فنوتیپی و طیف سنجی رنگدانه زرد مورد شناسایی ابتدایی قرار گرفت. بیماری زایی جدایه ها روی برگ های لیموترش و گریپ فورت در شرایط آزمایشگاهی و گلخانه ای اثبات گردید. نتایج شناسایی بیماری گر...
Fluoroquinolone resistance in Mycobacterium tuberculosis has become increasingly important. A review of mutations in DNA gyrase, the fluoroquinolone target, is needed to improve the molecular detection of resistance. We performed a systematic review of studies reporting mutations in DNA gyrase genes in clinical M. tuberculosis isolates. From 42 studies that met inclusion criteria, 1220 fluoroqu...
We report an electrochemical method for the sequence-specific detection of unpurified amplification products of the gyrB gene of Salmonella typhimurium. Using an asymmetric PCR and the electrochemical E-DNA detection scheme, single-stranded amplicons were produced from as few as 90 gene copies and, without subsequent purification, rapidly identified. The detection is specific; the sensor does n...
بیماری لکه زاویه ای ختمی خواب آلود (malvaviscus pendulifloru)در چند سال متوالی در برخی از مناطق استان های مازندران و گلستان مشاهده شده است. لکه ها به قطر 3 تا 4 میلی متر، نکروزه، قهوه ای رنگ، زاویه ای شکل و بدون هاله بودند. از برگ های بیمار، یک سودوموناس اکسیداز منفی و تولید کننده لوان جداسازی گردید. جدایه ها در ویژگی های فنوتیپی ، نوع و میزان اسیدهای چرب سلولی و توالی ناحیه its شبیه به پاتووار...
During the early 1990s, a clone of multiresistant Salmonella enterica serovar Typhimurium O5 negative (var. Copenhagen) of phage type DT204c predominated in Germany and neighboring countries within the calf-fattening industry. In addition to being resistant to ampicillin, kanamycin, tetracycline, chloramphenicol, and trimethoprim, these isolates were highly resistant to nalidixic acid (MIC 128 ...
During the early 1990s, a clone of multiresistant Salmonella enterica serovar Typhimurium O5 negative (var. Copenhagen) of phage type DT204c predominated in Germany and neighboring countries within the calf-fattening industry. In addition to being resistant to ampicillin, kanamycin, tetracycline, chloramphenicol, and trimethoprim, these isolates were highly resistant to nalidixic acid (MIC 128 ...
During the early 1990s, a clone of multiresistant Salmonella enterica serovar Typhimurium O5 negative (var. Copenhagen) of phage type DT204c predominated in Germany and neighboring countries within the calf-fattening industry. In addition to being resistant to ampicillin, kanamycin, tetracycline, chloramphenicol, and trimethoprim, these isolates were highly resistant to nalidixic acid (MIC 128 ...
Aim Sequencing technology has replaced conventional methods in identifying and characterizing bacterial pathogens. We characterized 23 nonserotypeable Shigella that biochemically resembled Shigella spp. using whole genome sequencing. Materials & methods Genome sequences were analyzed using online tools based on 16S rRNA, k-mer, gyrB sequences and analysis of O-antigen arrangement was done usi...
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