objective(s): streptococcus pyogenes produces extracellular hyaluronidase enzyme. this enzyme is directly associated with the spread of the organism during infection. the objective of the present study was to clone and express the nucleotide sequence of the enzyme which is involved in hyaluronidase enzymatic activity. materials and methods: the enzymatic region of hyaluronidase gene was detecte...

The aim of this research is to evaluate the current streptokinase thrombolytic treatment and to identify or improve new techniques that will base new approaches with a higher efficiency in this area of expertise. In order to be as realistic as possible a new method was set up using magnetic vectorized nanoparticles streptokinase and human blood thrombus. The experimental data confirm the maximu...

The aim of the present study was to find possible relationships between physical exercise and oxidative stress in thoroughbreds during official races. For this purpose six healthy and trained thoroughbreds were used. Blood samples were collected from all horses at rest immediately after the race, and 30 and 180 min. after the race. The following parameters were assessed on obtained serum using ...

In the course of some experimental work it was noticed that the addition of glycine to broth cultures or aqueous suspensions of bacteria resulted, after some hours, in the apparent lysis of the cells. Closer examination of the phenomenon revealed that the first visible action was an immediate increase in the turbidity of the cell suspension, depending in degree upon the concentration of the gly...

Phage lambda lyses the host Escherichia coli at a precisely scheduled time after induction. Lysis timing is determined by the action of phage holins, which are small proteins that induce hole formation in the bacterium's cytoplasmic membrane. We present a two-stage nucleation model of lysis timing, with the nucleation of condensed holin rafts on the inner membrane followed by the nucleation of ...

Helicobacter pylori is a bacterium recognized as the major cause of peptic ulcer and chronic gastritis. Recently, a proteome-based approach was developed to investigate pathogenic factors related to H. pylori. In this preliminary study, H. pylori strains were isolated from gastric biopsies of patients with chronic gastritis and duodenal ulcers. A partial proteomic analysis of H. pylori strains ...

,Pitotal of 224 subjects in grades 6, 8, high school,.and college .solvedpeoblems requiring comprehension of the logical connectives and, or only. if, And if and only if, as well'as the terms is and is not. Half the subjects were required merely-to encode the connectives; the other half were required to: combine. as well as encode theM. Problems1,,were pre7. eien,ted in two replicetions-( er. t...

Since 1960, Schindler and Schuhardt have reported several studies on a unique substance which rapidly and specifically lyses staphylococci but has no effect on bacteria of other genera.`' This agent, termed lysostaphin, contains at least two enzymes, a peptidase and an N-acetyl-glucosaminidase.' The specific antistaphylococcal effect is thought to be due to the peptidase which cleaves genus-spe...