نتایج جستجو برای: antibiotic marker free strains

تعداد نتایج: 848093  

E. Rahimi , M. Ansari , M. Moumeni , M. Raissy ,

 The present study was aimed to evaluate the antimicrobial resistance and the presence of antibiotic resistance genes in Vibrios spp. isolated from seafood. A total of 72 isolates of Vibrio in 6 species including V. parahaemolyticus, V. vulnificus, V. alginolyticus, V. harveyi, V. mimicus and V. cholerae were examined. The results revealed that all isolates were expressing multiple an...

2005
Lance B. Price Elizabeth Johnson Rocio Vailes Ellen Silbergeld

The use of fluoroquinolones (FQs) in poultry production is an important issue in public health today. In February 2002, two prominent U.S. poultry companies pledged to stop using FQs for flock-wide treatment. One year later, we began a survey of Campylobacter isolates on chicken products from these two companies and from two producers claiming total abstention from antibiotic use. Using both st...

2013
Claudia E Vickers Sarah F Bydder Yuchan Zhou Lars K Nielsen

BACKGROUND Manipulations in Saccharomyces cerevisiae classically depend on use of auxotrophy selection markers. There are several disadvantages to this in a microbial cell factory setting: (1) auxotrophies must first be engineered in prototrophic strains, and many industrial strains are polyploid/aneuploid prototrophs (2) available strain auxotrophies must be paired with available repair plasmi...

ژورنال: Medical Laboratory Journal 2010

Bachground and objectives: Hospital surfaces can serve as reservoirs of potential pathogen bacteria. Staff hands are the most important source of transmission in hospital. The prevalence of β–lactamase producer bacteria in staff hands and hospital surfaces, increase antibiotic resistance nosocomial infection. The aim of this study was to survey the spread of beta-lactam resistance St...

Journal: :Applied and environmental microbiology 2013
Kia Vest Petersen Jan Martinussen Peter Ruhdal Jensen Christian Solem

We present a tool for repetitive, marker-free, site-specific integration in Lactococcus lactis, in which a nonreplicating plasmid vector (pKV6) carrying a phage attachment site (attP) can be integrated into a bacterial attachment site (attB). The novelty of the tool described here is the inclusion of a minimal bacterial attachment site (attB(min)), two mutated loxP sequences (lox66 and lox71) a...

2015
Ralitsa Georgieva Lyubomira Yocheva Lilia Tserovska Galina Zhelezova Nina Stefanova Akseniya Atanasova Antonia Danguleva Gergana Ivanova Nikolay Karapetkov Nevenka Rumyan Elena Karaivanova

Antimicrobial activity and antibiotic susceptibility were tested for 23 Lactobacillus and three Bifidobacterium strains isolated from different ecological niches. Agar-well diffusion method was used to test the antagonistic effect (against Staphylococcus aureus, Escherichia coli, Bacillus cereus and Candida albicans) of acid and neutralized (pH 5.5) lyophilized concentrated supernatants (cell-f...

ژورنال: Medical Laboratory Journal 2016
Ansari , Hossein, Bizhanzadeh , Mehdi, Khodadadi , Pouya, Zarinpour, Vajiheh, Moshfe , Abdolali , Najafi, Akram ,

ABSTRACT         Background and Objective: Antibiotic-resistant Staphylococcus aureus strains have become a problem in treatment of infections caused by S. aureus. This study aimed to evaluate antibiotic resistance in S. aureus isolates from raw milk and detect femA gene in these isolates, as a confirmatory test for identification of S. aureus species. ...

2013
Ming-Feng Lin Ming-Li Liou Chi-Chao Tu Hui-Wen Yeh Chung-Yu Lan

BACKGROUND The aims of this study were to understand the molecular epidemiology of integron-associated gene cassettes in Acinetobacter baumannii across four hospitals in northern Taiwan and to clarify the relationship between the presence of integrons and antibiotic-resistant phenotypes. METHODS Sixty-five A. baumannii isolates, collected from the patients of four regional hospitals in northe...

2017
Smrutiti Jena Sasmita Panda Kinshuk C. Nayak Durg V. Singh

We examined the presence of virulence and antibiotic resistance genes, SCCmec types and determined the genomic diversity among ocular S. epidermidis isolates (patients-23, healthy controls-29). PCR determined the presence of antibiotic resistance genes, virulence genes and SCCmec types among all isolates. MLST and PFGE determined the genomic relatedness among them. All isolates of S. epidermidi...

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