Staphylococcus aureus

Methicillin was first developed in 1959 as an antibiotic against penicillin-resistant Staphylococcus aureus. This beta-lactam antibiotic inhibits the synthesis of bacterial cell walls and inhibits cross-linkage between the linear peptidoglycan polymer chains, essentials for the cell wall of Gram-positive bacteria. This antibiotic is a derivative and modification to the original beta-lactam antibiotic penicillin and is penicillinase-resistant, which is effective against S. aureus bacterium’s enzyme pencillinase. However practice of this antibiotic have stopped due to the existence of MRSA. Methicillin-resistant Staphylococcus aureus (MRSA), a dangerous derivative of Staphylococcus aureus bacterium infecting unsuspected victims and continue to…

Bacteria: Staphylococcus aureus Bacteria is a funny thing in the world of the living organisms. We, as humans, often look at bacteria as a germ or something that causes harm to our body but that is not the case. The Earth happens to widely depend on bacteria. We often forget that 99% of bacteria is good for us. We need these bacteria’s so they can occupy spaces in our body where else that 1% of bad ones will invade and make us sick. The bacteria, Staphylococcus aureus, happens to be one of…

IV. Pathogenesis of Staphylococcus aureus A. Mode of Pathogenicity Staphylococcus aureus is both a commensal bacterium and a versatile pathogen. It is commensal because it can harmlessly colonize in the nares, axillae, vagina, pharynx, or damaged skin surfaces (Jenkins et al. 2015). Commensal bacteria supports the superficial layer of our body from pathogenic bacteria. For instances, S. aureus produces bacteriocins (toxins created by bacteria) that impedes pathogenic staphylococcal organism…

Methicillin-Resistant Staphylococcus Aureus For this assignment I have been asked to choose a pathogen, describe it and explain how the chain of infection can be broken. I have chosen Meticillen Resistant Staphylococcus Aureus. As a support worker in theatres MRSA can cause significant problems for us and for patients, therefore we have to have each patient screened before we operate and we have certain standard precautions we need to follow before, during and after surgery. Staphylococcus…

Prior to the commencement of the experiment, several hypotheses were made in regards to the efficacy of different household antibacterial products on two species of bacteria. The first hypothesis predicted that the most afflicted species of bacteria would be Staphylococcus aureus; the second suggested that products A and C would be more effective at killing both species of bacteria than product B; whilst the third hypothesis proposed that product A would be most active against S.aureus. The…

Staphylococcus aureus is a species of bacteria known as a major human pathogen causing a wide range of infections. Enterotoxigenic bacteria can be defined as bacteria that producing or pertaining in production of enterotoxin, thus enterotoxigenic Staphylococcus aureus is one of the bacteria that produce enterotoxin (Schelin et al., 2011). Most of previous research, an occurrence of enterotoxigenic S. aureus in food caused one the most frequent microbial diseases which known as Gastroenteritis…

Staphylococcus Aureus How it started S. aureus belongs to the Staphylococcaceae family. This special germ is a major source of pus. It was discovered and named by Scottish surgeon Alexander Ogston in 1880. He was distressed with the high rate of post- operative mortality and unwilling to accept death as a likely outcome of surgery. He was a fan and follower of the value of antisepsis advocated by Joseph Lister. Ogston abandoned the contemporary teaching that pus formation was a necessary stage…

Staphylococcus aureus is responsible for various types of infections including skin and also respiratory tract infections. S.aureus can infect tissue when if the defensive line such as the skin or mucosal barriers had been breached. The infection caused by this bacteria can be spread in different modes such as direct contact from an infected wound, contact with the hyaluronidase, an enzyme produced by the bacteria that destroys tissues or even skin to skin contact with an infected person.…

Aortic graft infection is rare and carries a poor prognosis. The conventional managements for prosthetic graft infection are surgical debridement, removal of the infected graft, and reconstruction with the new graft prosthesis. However, these approaches are not feasible for some patients with anatomical difficulty of excision or severe comorbid medical illnesses. We report a case of aortic prosthetic graft infection treated successfully with long term antibiotics without surgical intervention. A…

Impact of penicillin, novobiocin, and kanamycin on Staphylococcus aureus bacterial growth Introduction: In today’s world, bacteria are becoming more abundant and strong in terms of their resistance to antibiotics. As a result of increasing prescription potency, clinicians are supposed to be conscious of those patients who are more inclined to infection by prescribing the appropriate antibiotics on the basis of their sensitivities along with their cultures (Fleming et al., 2006). A recent case…