is one of the most important species among beta-haemolytic streptococci, causing human infections of different localization. It is isolated from clinical specimens relatively frequently. In this study, the frequency and co-occurrence of toxin genes (, , , , , ) among 147 strains were evaluated, using real-time PCR. In addition, the relationship between the occurrence of these genes and the origin of strains from selected clinical material was assessed. The gene was present with the highest incidence (98.6%), while the gene was the least frequent (8.2%) among the tested strains. Based on the presence of the detected genes, the distribution of 17 genotypes was determined. The most common (21.8%), was (-) (+) (-) (-) (-) (-) genotype. Furthermore, significant variation in the presence of some genes and genotypes of toxins in strains isolated from different types of clinical material was found. There is a considerable variety and disproportion between the frequency of individual genes and genotypes of toxins in strains. The relationship between the origin of isolates and the presence of toxins genes indicates their pathogenic potential in the development of infections of selected localization.
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| http://dx.doi.org/10.3390/biomedicines10040799 | DOI Listing |
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