نتایج جستجو برای: exotoxin a exoa
تعداد نتایج: 13432061 فیلتر نتایج به سال:
The presence of exotoxin in Bacillus thuringiensis was demonstrated and its quantity in the cells determined. The concentration of exotoxin in the producing microorganism is approximately half the concentration of ATP. Exotoxin is produced at such a rate that the cell excretes 1/5 to 1/4 of its exotoxin content into the medium per minute.
In pseudomonal septicaemia, serum levels of antibody to exotoxin A have been demonstrated to be an important independent predictor of survival. Previously, we have demonstrated that exotoxin A directly injures pulmonary endothelial cells, and that dibutyryl-cyclic adenosine monophosphate (Db-cAMP) can attenuate this injury. The object of this study was to examine the mechanisms of this pulmonar...
Background: Multidrug-resistant bacteria make many problems in clinical therapy, design and manufacture of synthetic drugs. Pseudomonas aeruginosa is one of the most important multidrug-resistance bacteria leads to variety infections in human especially in immunocompromised, patients with severe burns, and nosocomial infections. It Recent years, this organism makes a big challenge in clinical t...
conclusions the high rate of mdrpa and its ability to produce biofilm is an alarm for public health. the statistical analysis showed that biofilm production in the mdrpa isolates was significantly higher than that in the non–mdrpa isolates (p < 0.001). background pseudomonas aeruginosa possesses a variety of virulence factors and infections caused by multidrug-resistant p. aeruginosa (mdrpa) in...
The nature of the mitogenic activity of pyrogenic streptococcal exotoxin B, also known as streptococcal cysteine protease, has been debated in the literature. Streptococcal exotoxin B has been shown to cleave interleukin-1beta precursor and create biologically active interleukin-1beta, a major cytokine mediating inflammation and shock. This activity could mimic the mitogenicity and cytokine rel...
beta-Exotoxin I is a nonspecific insecticidal metabolite secreted by some Bacillus thuringiensis strains. Several studies of B. thuringiensis strains that have lost the capacity to produce beta-exotoxin I have suggested that there is a strong correlation between high levels of beta-exotoxin I production and the ability to synthesize crystal proteins. In this study, we showed that a mutant strai...
-Exotoxin I is a nonspecific insecticidal metabolite secreted by some Bacillus thuringiensis strains. Several studies of B. thuringiensis strains that have lost the capacity to produce -exotoxin I have suggested that there is a strong correlation between high levels of -exotoxin I production and the ability to synthesize crystal proteins. In this study, we showed that a mutant strain, B. thurin...
The effects of the exotoxin from Bacillus thuringiensis on DNA-dependent RNA polymerases from rat liver were examined. The exotoxin inhibits all RNA polymerase activity at both low and high ionic strength in intact nuclei, and soluble enzymes are similarly affected. This inhibition is relieved by ATP. Dephosphorylated exotoxin did not inhibit the soluble enzymes. Nucleolar and nucleoplasmic RNA...
Background and Objective: Saccharomyces cerevisiae is one of the probiotic yeasts that has positive effects on health. Pseudomonas aeruginosa is one of the important opportunistic pathogenic bacteria. The purpose of this study was to determine the effect of supernatant of Saccharomyces cerevisiae on preventing the growth of Pseudomonas aeruginosa and its effect on exotoxin S gene expression by ...
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