Staphylococcus of adhering to an insert or living

Topic: ScienceMedicine
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Last updated: May 18, 2019

Staphylococcus aureus is a serious a public health and modern healthcare concern. S. aureus has remained an important human pathogen causing a wound, respiratory tract, skin and tissue infections, pneumonia, septicemia, and endocarditis, toxic shock syndrom, a device related infections as sporadic and epidemical (1-3). Burn injury is one of the most common types of harmful forms of trauma that require crucial care medicine (4, 5). Burn injury patients are at high risk of infections (6).

The incidence of bacterial wound contamination has a direct relationship with the risk of sepsis (6, 7). Staphylococcus species and Pseudomonas aeruginosa are two of the most commonly isolated microorganisms from burn wounds around the world (4, 8).The deployment of multidrug resistance by S.

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aureus particularly Methicillin-resistant Staphylococcus aureus challenging clinicians and infection control organization through the worldwide (9, 10). The development of strains resistant to methicillin and other antibacterial agent has become an important problem in the hospitals and community, because of the higher mortality (11). The capability of  S.aureus to colonization on epithelial surfaces has been found to be associated with the production of biofilm (12, 13). Biofilm is structure community of bacteria, which formed of multiple layers, the cluster enclosed in an exopolysaccharide glycocalyx and able of adhering to an insert or living surface (14, 15). The result of studies showed that the initial step of Staphylococcal infection is the attachment to the surface of various materials, including medical devices and host tissue (16). Biofilm is the basis for persistent or chronic bacterial infections and is considered to be a two-step manner, the bacteria in primary step adhere to any other and then develop a biofilm (14, 17).

This step is mediated by a polysaccharide intercellular adhesion (PIA( and the intercellular adhesion (ica) locus consisting of the genes (ica A, ica B, ica C , ica D) encodes the proteins required for the synthesis of a polysaccharide intercellular adhesion (PIA(  and capsular polysaccharide adhesin (PSA) which are the important biofilm components in staphylococcal species (12, 14, 17, 18). S. aureus generates a variety of extracellular protein toxins, Consist of enterotoxins, exfoliative toxin A-B, hemolysins and Panton-Valentine leukocidin. Some strains of S.

aureus producing one or both of two ETA or ETB, have been associated with a group of impetiginous staphylococcal diseases correlated to as staphylococcal scalded-skin syndrome (19).The current study was carried out to determine the antibiotic resistance and biofilm production among the strains of S. aureus isolated from burn patients.


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