نتایج جستجو برای: e coli rosettade3
تعداد نتایج: 1122850 فیلتر نتایج به سال:
We consider of the antimicrobial activity on the Ag nanoparticles(Ag NPs) aqueous solutions, which was prepared using a stabilizer, such as poly(N vinyl 2 pyrrolidone PVP , for Staphylococcus aureus) S aureus and Escherichia coli E coli by measuring the minimum inhibitory concentration MIC . Antimicrobial effect of Ag NPs for S aureus and E coli was investigated using disk diffusion method Also...
آلکالوئید های گیاهی گروه های بزرگی از تولیدات طبیعی را تشکیل می دهند، که ترکیبات فعال دارویی فراوانی را مهیا می سازند. ریشه های برخی از گیاهان خانواده سولاناسه توانایی تولید آلکالوئیدهای تروپانی (hyoscyamus niger) مانند گیاه بنگدانه (solanaceae) مانند هیوسیامین و اسکوپولامین را دارند. این دو آلکالوئید عمدتاً در سلول های ریشه های کامبیون جوان تولید می شوند. آن ه ا عمدت اً بدلیل تأثیر رو ی سیست...
ظهور باکتری های مقاوم به عوامل ضد میکروبی تهدیدی علیه سلامت جامعه بوده و پزشکان را با مشکل مواجه کرده است. افزایش سریع مقاومت باکتری ها به این عوامل، درمان بیماری های عفونی را مشکل ساخته است. e. coli یکی از شایعترین باکتری های مولد عفونت های دستگاه ادراری بوده که بوسیله آنتی بیوتیک های گروه کینولون نظیر سیپروفلوکساسین درمان می شود. اگرچه گزارشاتی مبنی بر ظهور انواع مقاوم آن نسبت به سیپروفلوکسا...
Background: Escherichia coli O157:H7 is a Gram-negative and facultative anaerobic food-borne bacterial pathogen. The major purpose of this study was to evaluate physicochemical characteristics of nanoliposome garlic Essential Oil (EO) and its antibacterial effect on E. coli O157:H7. Methods: Nanoliposome garlic EO was prepared by ethanol injection method and its physicochemical properties were...
Introduction: Antibiotic resistance, especially in Gram-negative uropathogens such as Escherichia coli, is the main barrier to treat urinary tract infection (UTI). In recent years, the dramatically increased resistance of E. coli to quinolones, a group of widely used antibiotics, has become a significant concern. Methods: In this descriptive cross-sectional study, we collected 261 E. coli isola...
Background and objectives: Urinary tract infection (UTI) is the most prevalent infection and Escherichia coli (E. coli) is one of the main causes of UTI worldwide. Integrons are mobile genetic elements considered to be responsible for dissemination of multi-drug resistance infections. Therefore, the aims of this study were to investigate the antibiotic resistance patterns and distribution of cl...
Background and objectives: Bacteriocins are generally active antimicrobial peptides effective against bacteria closely related to the producer. Escherichia coli produce two bacteriocins: colicins and microcins. Microcin J25 (Mcc J25) is an antibacterial peptide that inhibits bacterial transcription by disrupting the nucleotide-uptake channel of bacterial RNA polymerase. The objective of this st...
Background and Aims: Pistacia atlantica is one of the medicinal plants native to Iran and known for its antimicrobial properties. Therefore, the present study aimed to investigate the antibacterial and antifungal effects of the aqueous extract of P. atlantica leaves on clinical isolates of Escherichia coli and Candida albicans in vivo. Materials and Methods: In this descriptive-cross-sectional...
The present study aimed to evaluate the antibiotic resistance pattern of Escherichia coli strains isolatedfrom animals to ascertain the levels of antibiotic resistance pervasiveness. A total of 28 E. coli strains wereisolated from faecal samples and the antibiotic resistance pattern of E. coli strains was determined by meansof disc diffusion assay. The resistance pattern determined for all stra...
Enterotoxigenic Escherichia coli (ETEC) produces different virulence factors allowing the bacterium to colonize and develop watery diarrhea. Proteomics studies have also introduced new protein belonging to the secretion pathways, antigen 43 (Ag43), which plays important role in E. coli pathogenesis. The objective of this study was to investigate O-types and virulence factors o...
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