Search results
Results From The WOW.Com Content Network
PRN is pertactin, a virulence factor of the bacterium that causes pertussis: pt. perstetur: continue pulv. pulvis: powder p.v., PV per vaginam: vaginally q quaque: every, per q.1 h, q.1° quaque 1 hora: every 1 hour (can replace 1 with other numbers) q4PM at 4:00 pm (can replace 4 with other numbers) mistaken to mean every 4 hours q.a.d. quaque ...
The cytolytic peptide Candidalysin is produced during hyphal formation by Candida albicans; it is an example of a virulence factor from a fungus. Other virulence factors include factors required for biofilm formation (e.g. sortases) and integrins (e.g. beta-1 and 3). [7]
Capsules allow adhesion to surfaces and help enable the bacteria to evade the host immune system. [6] The water content in the capsule gives the protection against drying out. The capsule is considered a virulence factor because it enhances the ability of bacteria to cause disease (e.g. prevents phagocytosis).
Virulence is a pathogen's or microorganism's ability to cause damage to a host. In most cases, especially in animal systems, virulence refers to the degree of damage caused by a microbe to its host. [1] The pathogenicity of an organism—its ability to cause disease—is determined by its virulence factors.
S. pyogenes has several virulence factors that enable it to attach to host tissues, evade the immune response, and spread by penetrating host tissue layers. [18] A carbohydrate-based bacterial capsule composed of hyaluronic acid surrounds the bacterium, protecting it from phagocytosis by neutrophils. [2]
Virulence factors are molecules, cellular structures and regulatory systems that enable bacteria to evade the body's immune defenses (e.g. urease, staphyloxanthin), move towards, attach to, and/or invade human cells (e.g. type IV pili, adhesins, internalins), coordinate the activation of virulence genes (e.g. quorum sensing), and cause disease ...
Polysaccharide capsule. N. meningitidis has a polysaccharide capsule that surrounds the outer membrane of the bacterium and protects against soluble immune effector mechanisms within the serum . It is considered to be an essential virulence factor for the bacteria. [ 5 ]
[7] [8] Several virulence factors are thought to contribute to E. faecalis infections. A plasmid -encoded hemolysin , called the cytolysin , is important for pathogenesis in animal models of infection, and the cytolysin in combination with high-level gentamicin resistance is associated with a five-fold increase in risk of death in human ...