نتایج جستجو برای: toxin genes
تعداد نتایج: 473001 فیلتر نتایج به سال:
Bacillus cereus is a versatile organism which causes two distinct types of food poisoning by producing toxins. Toxin formation in B. very much complex process involving co-regulation multiple genes exerting control at transcriptional, translational and post-translational level such regulations too are often influenced extrinsic factors. A comprehensive understanding factors crucial for holistic...
methods this experimental study was conducted on iranian children communities from may to november 2014. forty stool samples were obtained from laboratories and investigated for heat-labile toxin (lt). specific primers were designed and the dig -labeled pcr products were bounded to streptavidin-coated wells of a microtiter plate and detected by anti-dig-peroxidase conjugate. an internal biotin-...
Background: Foodborne outbreaks associated with shiga toxin-producing Escherichia coli (STEC) have been well documented worldwide. STECs are major causative agents of gastroenteritis in humans that may be complicated by hemorrhagic colitis (HC), hemolytic uremic syndrome (HUS), and thrombotic thrombocytopenia purpura (TTP). OBJECTIVES: The aim of this study was to investigate the presence of vi...
Background and Objective: Secreted toxins of the burn wounds caused by Pseudomonas aeruginosa play an important role in spreading infection. The antibiotic resistance pattern may have an effect on the increased toxicity of this bacterium. Therefore, the aim of this study was to determine the relationship between the presence of P. aeruginosa toxins isolated from burn wounds and the antibiotic r...
methods campylobacter jejuni atcc 33291 and seven isolates donated from instituto de biotecnologia were used in this study. the presence of cdt genes in c. jejuni strains was determined by pcr. to evaluate the effect of cdt, hela cells were treated with bacterial lysate, and the damage and morphological changes were analyzed by microscopy, immunofluorescence staining, and flow cytometry. to eva...
Introduction: Acinetobacter baumannii is one of the most important nosocomial and community-acquired pathogens that is resistant to many antibiotics. Toxin-antitoxin systems are regulatory systems that maintain bacteria and serve as new targets for Antimicrobial therapies are considered. The prevalence and transcription of these systems in clinical isolates is still unknown. The aim of this stu...
Background and Objective: In Indonesia, diphtheria cases caused by Corynebacterium diphtheriae are still occurring until today. One of the causes is probably the diphtheria toxin repressor (dtxR) gene which influences toxin expression. Therefore, in this study the characterization of the gene was performed to determine the mutations that affect the DtxR protein. Methods: The dtxR genes of ...
Although the widespread distribution of venomous marine worms around the world, the structural and toxinologcal studies of their toxins are still limited.This study was aimed to evaluate the toxicity of poisonous marine worms. Touching the cilium of Chloeia flava and Sipuncula marine worms cause painful inflammation of the skin. Many species of nemertines prey their victims by a flexible prob...
We describe a comprehensive detection system for 18 kinds of classical and newly described staphylococcal superantigenic toxin genes using four sets of multiplex PCR. Superantigenic toxin genotyping of Staphylococcus aureus for 69 food poisoning isolates and 97 healthy human nasal swab isolates revealed 32 superantigenic toxin genotypes and showed that many S. aureus isolates harbored multiple ...
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