title: Molecular characterization of Panton-Valentine leukocidin-positive community-acquired methicillin-resistant Staphylococcus aureus isolates in Egypt.
abstract: Community-acquired methicillin-resistant Staphylococcus aureus (CA-MRSA) expressing Panton-Valentine leukocidin (PVL) have been characterized worldwide, but it has not been done in Egypt. In this study, we analyzed the molecular characteristics of PVL+CA-MRSA in Egypt, compared their genetic patterns with that of PVL+ methicillin-susceptible S. aureus and PVL+CA-MRSA from different countries, and investigated the allelic variations among their lukS-PV and lukF-PV gene sequences. The prevalence of PVL+MRSA was 19.04%. They belonged to different genetic clones with multi-locus sequence types (MLST) 30, 80, and the novel type 1010. ST80 strains showed unique antibiotic resistance profile that was distinguishable from the European ST80 clone: they had no resistance to tetracycline and fusidic acid. Two nonsynonymous substitutions in the lukS-PV gene region and two haplotype variants among these isolates were detected. We revealed that PVL is a good marker for CA-MRSA infections and that PVL+ isolates belonged to different genotypes.
authors.affiliation: Department of Microbiology and Immunology, Faculty of Pharmacy, Suez Canal University, Ismailia, Egypt. shymaa21@yahoo.com
authors.forename: Shymaa
authors.initials: S
authors.lastname: Enany
authors.forename: Eishin
authors.initials: E
authors.lastname: Yaoita
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Yoshida
authors.forename: Mohamed
authors.initials: M
authors.lastname: Enany
authors.forename: Tadashi
authors.initials: T
authors.lastname: Yamamoto
mesh_terms: D000483:Alleles; D019943:Amino Acid Substitution / Q000235:genetics; D001426:Bacterial Proteins / Q000235:genetics; D001427:Bacterial Toxins / Q000096:biosynthesis*; D015373:Bacterial Typing Techniques; D016000:Cluster Analysis; D017714:Community-Acquired Infections / Q000453:epidemiology* / Q000382:microbiology*; D016172:DNA Fingerprinting; D004269:DNA, Bacterial / Q000737:chemistry / Q000235:genetics; D004534:Egypt / Q000453:epidemiology; D016521:Electrophoresis, Gel, Pulsed-Field; D005098:Exotoxins / Q000096:biosynthesis*; D005838:Genotype; D006801:Humans; D007956:Leukocidins / Q000096:biosynthesis* / Q000235:genetics; D055624:Methicillin-Resistant Staphylococcus aureus / Q000145:classification* / Q000235:genetics* / Q000302:isolation & purification; D008826:Microbial Sensitivity Tests; D017720:Molecular Epidemiology; D008969:Molecular Sequence Data; D015995:Prevalence; D017422:Sequence Analysis, DNA; D013203:Staphylococcal Infections / Q000453:epidemiology* / Q000382:microbiology*
chemical_list: D001426:Bacterial Proteins; D001427:Bacterial Toxins; D004269:DNA, Bacterial; D005098:Exotoxins; D007956:Leukocidins; C078284:Panton-Valentine leukocidin; C108483:leukocidin S-component protein, Staphylococcus; C074300:LukF protein, Staphylococcus aureus