Virulence factors and genetic variability of Staphylococcus aureus strains isolated from raw sheep's milk cheese

Spanu, Vincenzo; Spanu, Carlo; Virdis, S.; Cossu, F; Scarano, Christian; Santis, E.P.L. De

doi:10.1016/j.ijfoodmicro.2011.10.015

Cited by 48 publications

(45 citation statements)

References 30 publications

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“…It was also shown that all MRSA strains harbored SGF, SGFa and SGFb prophage types; therefore, the presence of sea, sek and seq genes was not surprising. This finding was not in agreement with those of other studies, in which the prevalence of these genes was significantly lower (12,15,(32)(33)(34)(35)(36)(37)(38)(39)(40)(41). On the other hand, the high prevalence of sea, sek and seq genes was shown in MRSA strains isolated from patients in a referral hospital in Tehran, Iran (42).…”

Section: Discussioncontrasting

confidence: 76%

Isolation of Methicillin-Resistant Staphylococcus aureus Strains Producing Enterotoxins A, K and Q From Chicken Meat in Isfahan, Iran, 2014

Rahimi

Karimi

2016

Arch Clin Infect Dis

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Section: Discussioncontrasting

confidence: 76%

Isolation of Methicillin-Resistant Staphylococcus aureus Strains Producing Enterotoxins A, K and Q From Chicken Meat in Isfahan, Iran, 2014

Rahimi

Karimi

2016

Arch Clin Infect Dis

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“…These variations could be due to the origin of these strains and also the location and geographical situation of different countries (30). Like other reports (9,12,(31)(32)(33)(34)(35), here all strains were grouped into different patterns consisting of multiple virulence genes. One explanation for the presence of multiple toxins in most strains is that these genes are often structurally linked.…”

Section: Discussionsupporting

confidence: 60%

Characteristics of Virulence Factors in Methicillin-Resistant Staphylococcus aureus Strains Isolated From a Referral Hospital in Tehran, Iran

Rahimi

Karimi

2016

Arch Clin Infect Dis

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Background: Methicillin-resistant Staphylococcus aureus (MRSA) has been known as one of the most important nosocomial pathogens that able to produce a variety of virulence factors. Objectives: In this study, we aimed to describe the prevalence, presence of different virulence factors, staphylococcal cassette chromosome mec (SCCmec) and prophage typing of MRSA strains isolated from a referral hospital in Tehran, Iran. Materials and Methods: A total of 279 S. aureus strains were collected from a referral hospital in Tehran during August to December of 2013. All isolates were confirmed using species specific primers and were tested for susceptibility to oxacillin and cefoxitin disks by the recommendations of clinical and laboratory standards institute (CLSI). The staphylococcal enterotoxin (sea-seq) and pvl, hlb and sak genes were detected and typed using prophage typing and SCCmec typing methods. Results: Out of the 279 S. aureus isolates, 91 (32.6%) strains were confirmed as MRSA. Totally, 6 enterotoxin and 2 virulence factor genes were detected in MRSA strains. The sea, sek, seq and hlb genes were present in all MRSA and sak, seg, sei and sel were detected in 85%, 35%, 23% and 44% of the strains. Only SCCmec type III and type 3 ccr and 2 different prophage patterns were identified among the strains. Conclusions: Our results show the presence of clonal groups of enterotoxin-producing MRSA strains in this hospital in Tehran. The presence of bacteriophage encoded virulence factors and resistance to oxacillin enable bacteria to produce a broad spectrum range of diseases.

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“…Given that Vancomycin and oxacillin are important antibiotics for human, isolates.Our results indicated high resistance rate for oxacillin which is responsible for methicillin resistance. This may be an indication for contamination or even infection by human isolates (Spanu et al, 2012). Moreover, the difference of animal welfare system and the medication by the antimicrobial drugs caused this high prevalence of antimicrobial resistance (Guler et al, 2005).…”

Section: Discussionmentioning

confidence: 99%

Characterization of Coa Gene and Antimicrobial Profiles of Staphylococcus Aureus Isolated from Bovine Clinical and Subclinical mastitis

Younis¹,

Sadat²,

Maghawry³

2018

Adv. Anim. Vet. Sci.

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Virulence factors and genetic variability of Staphylococcus aureus strains isolated from raw sheep's milk cheese

Cited by 48 publications

References 30 publications

Isolation of Methicillin-Resistant Staphylococcus aureus Strains Producing Enterotoxins A, K and Q From Chicken Meat in Isfahan, Iran, 2014

Isolation of Methicillin-Resistant Staphylococcus aureus Strains Producing Enterotoxins A, K and Q From Chicken Meat in Isfahan, Iran, 2014

Characteristics of Virulence Factors in Methicillin-Resistant Staphylococcus aureus Strains Isolated From a Referral Hospital in Tehran, Iran

Characterization of Coa Gene and Antimicrobial Profiles of Staphylococcus Aureus Isolated from Bovine Clinical and Subclinical mastitis

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