نتایج جستجو برای: exotoxin a exoa
تعداد نتایج: 13432061 فیلتر نتایج به سال:
Background: Pseudomonas aeruginosa has emerged as one of the most important nasocomial pathogen resulting in morbidity and mortality rates. The aim of this research was to PCR identification of P. aeruginosa isolated from tracheal samples based on the amplification of I lipoprotein (oprI) for detection of genus and L lipoprotein (oprL) for detection of species and Exotoxin A (toxA) gene. ...
Streptococcal mitogenic exotoxin Z (SMEZ), a superantigen derived from Streptococcus pyogenes, provoked expansion of human lymphocytes expressing the Vbeta 2, 4, 7 and 8 motifs of T-cell receptor. SMEZ was pyrogenic in rabbits and stimulated the expression of the T-cell activation markers CD69 and cutaneous lymphocyte-associated antigen. A variety of cytokines was released by human mononuclear ...
Diphtheria toxin (DT) and Pseudomonas aeruginosa exotoxin A have the same molecular mechanism of toxicity; both toxins ADP-ribosylate a modified histidine residue in elongation factor 2. To help identify amino acids involved in this reaction, sequences in DT that share homology with P. aeruginosa exotoxin A were synthesized and examined for a role in the ADP-ribosyltransferase reaction. By usin...
Toxic shock syndrome-associated staphylococcal and streptococcal exotoxins were tested for an ability to induce the production of tumor necrosis factor (TNF). Staphylococcal enterotoxins B and C1, along with streptococcal pyrogenic exotoxin A, all induced TNF production in a dose-dependent manner, with production peaking on the average at 3 days but continuing over the 6 days tested. This time ...
اهداف: به طور کلی استخراج dna از باکتریهای گرم مثبت بسیار مشکل و پرهزینه است. هدف از این مطالعه استفاده از پلیاتیلن گلیکول 200 به منظور استخراج dna از باکتری گرم مثبت لاکتوباسیلوس اسیدوفیلوس و باکتری گرم منفی سودوموناس آئروژینوزا و انجام pcr روی آنها به منظور جست وجو به ترتیب برای ژنهای lacto و exoa بود. مواد و روشها: در این مطالعه سویه استاندارد باکتری گرم مثبت لاکتوباسیلوس اسیدوفیلوس و ب...
A 2.7-kilobase DNA fragment carrying the entire exotoxin A (ETA) structural gene was divided into three nonoverlapping probes. Two probes covering the ETA structural gene were used in colony hybridization experiments to determine whether sequences homologous to the ETA gene could be detected in genera other than Pseudomonas or in Pseudomonas species other than Pseudomonas aeruginosa. The majori...
Background and Objective: Pseudomonas aeroginosa is the most common pathogen associated with nosocomial infections and possesses virulence factors which contribute to the bacterial invasion and toxicity such as alginate, exoenzyme S, exotoxin A and elastase. The aim of this study was to determine the prevalence of algD, exoS, toxA and lasB genes in Pseudomonas aeruginosa samples isolated from p...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید