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Staphylococcus aureus is a gram-positive spherically shaped bacterium, a member of the Bacillota, and is a usual member of the microbiota of the body, frequently found in the upper respiratory tract and on the skin. It is often positive for catalase and nitrate reduction and is a facultative anaerobe, meaning that it can grow without oxygen. [1]
Staphylococcus spp. also inhabit human skin, but they are facultative anaerobes. They ferment sugars, producing lactic acid as an end product. Many of these species produce carotenoid pigments, which color their colonies yellow or orange. Staphylococcus aureus is a major human pathogen. It can infect almost any tissue in the body, frequently ...
Staphylococcus species are facultative anaerobes (capable of growth both aerobically and anaerobically). [15] All species grow in the presence of bile salts. All strains of Staphylococcus aureus were once thought to be coagulase-positive, but this has since been disproven. [16] [17] [18] Growth can also occur in a 6.5% NaCl solution. [15]
S. aureus is one of the causal agents of mastitis in dairy cows. Its large capsule protects the organism from attack by the cow’s immunological defenses. Extremely high-detailed image of Staphylococcus aureus bacterial cells, captured by a transmission electron microscope, magnified 50,000 times.
In 2020 alone, one in three of the 14,000 documented infections in dialysis patients were caused by the tough-to-treat Staphylococcus aureus (staph) germ, which can enter a patient’s bloodstream ...
Staphylococcus scalded skin syndrome – Staphylococcus scalded skin syndrome is caused by toxins produced when a staph infection gets too severe. It is characterized by a fever, rash, and blisters. Methicillin-resistant Staphylococcus aureus (MRSA) – MRSA is one of the most common antibiotic-resistant strains of staph bacteria. It is more ...
English: This SEM shows a strain of Staphylococcus aureus bacteria taken from a vancomycin intermediate resistant culture (VISA). Under SEM, one can not tell the difference between bacteria that are susceptible or multidrug resistant, but with TEM, at least with VISA isolates one can see a thickening in the cell wall that may attribute to their reduced susceptibility to vancomycin.
Among these are Pseudomonas aeruginosa, which has a grape-like scent; Staphylococcus aureus, which is said to smell like old socks; and Proteus mirabilis, whose scent is alternately described as putrid [1]: 168 or like chocolate cake. [7]: 124 Other distinctive features of colonial morphology include motility and the production of pigments.