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- W1968606390 abstract "Pseudomonas aeruginosa is the major pulmonary pathogen that causes morbidity and mortality in burned, immunocompromised and cystic fibrosis patients. Among the various virulence factors, type IV-pili, play a major role in mediating bacteria-host cells interactions, in formation of biofilm and for twiching motility.These pili are composed of pilin, 15000-16000 molecular weight monomeric subunit, synthesized from pilA gene. The N-terminal region of pilin protein is strong conserved and is important for the oligomerization.The C-terminal region is less conserved and contains a disulfide-bonded loop (DSL) structure that is thought to interact with the eukaryotic glycolipid receptor “asialo GM1”. Analysis of pilin allele distribution among isolates from various sources revealed the presence of six groups of pilin allels characterized by different DSL sequence and different associated accessory genes in pilA chromosomal locus. 81 P. aeruginosa isolates were recovered from cystic fibrosis patients during a 3 years period. 30 of these strains were grown and their genomic DNA was prepared using a rapid method for gram-negative bacteria. PCR primers were used for amplification of pilA and adjacent sequences revealing the presence of three different amplification products. One of these is highly homologous with pilA gene of PA14 strain, the others are identical to PA103 and PAK pilA genes. Our study revealed in the prevalence of isolates with group II pilin genes from Cystic Fibrosis compared with other groups that are predominant in previous studies." @default.
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- W1968606390 date "2007-06-30" @default.
- W1968606390 modified "2023-10-17" @default.
- W1968606390 title "Caratterizzazione di isolati di Pseudomonas aeruginosa provenienti da pazienti affetti da fibrosi cistica" @default.
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- W1968606390 doi "https://doi.org/10.4081/mm.2007.2620" @default.
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