Virulence

A pathogen is the name given to a group of organisms which cause diseases within the human body and are able to do so because of their ability to invade the bodies environment. Pathogens cause damage to the tissues within the human body by replicating themselves at a fast rate in order to invade as many near by cells and give themselves a better chance of survival before the immune system starts to fight them off (Fullick, 1998, pp. 8–9). They are passed on from one person to another and that's…

pyogenes has several virulence factors that can help evade the immune system and spread into deeper tissues. One of the most important virulence factors is the fimbriae. The fimbriae contains a M-protein that blocks the binding site. This inhibits phagocytosis from the host. The M-protein also affects the heart because they contain…

Causative Agent: Toxoplasma gondii Disease: toxoplasmosis Classification of the causative agent: Toxoplasma gondii is a protozoan parasite History: Freezing meat at subzero temperatures for up to a few days does help lower the risk of infections. Virulence factors of the causative agent: Toxoplasmosis is one of the most successful parasites on earth. It has the ability to start phagocytosis, it can reform the cytoskeleton. It can be found in the intestinal tract, present as a cyst in…

processing surfaces in which that is a pathway leading to cross contamination of foods (Ciccio et al., 2015). The human beings are a major reservoir for the post-process recontamination. There are relations among the taxonomic aspects, ecosystem and the virulence factors related to Staphylococcus and its importance in the food and public health (Schelin et al., 2011). According to Ciccio et al., the food contact surfaces with presence of biofilm are respected as a health threat. Microbial…

The existence of life on earth is driven by the forces of mutation, natural selection and speciation. Mutation is changes in gene structure causing changes in characteristics. Natural selection provides the mechanism by which mutations are selected for survivability and adaptation. Changes caused by mutation and natural selection lead to speciation, in which populations of creatures become seperated from each other. A common misunderstanding about evolution and natural selection is that it's…

The urinalysis is likely to also check for molecules that promote the growth of bacteria, as well as monomers that specific strains of bacteria shed when they begin replicating inside a new host cell. Depending on the symptoms of the patient further tests and data collection may be required. If the infection were to spread to the kidneys it could cause Kidney failure and ultimately death. An ultrasound examination can be used to check for inflammation of the kidneys and bladder. There are…

Faecal contamination of water is routinely detected by microbiological analysis. The approach that has been adopted is to analyses for indicator organisms that inhabit the gut in large numbers and are excreted in human faeces. The presence of these indicator organisms in water is evidence of faecal contamination and therefore, of a risk that pathogens are present. If indicator organisms are present in large numbers, the contamination is considered to be recent and/or severe. Total coliforms,…

form in which clinically relevant V.cholerae is taken up by humans, providing a concentrated infective dose. It has single polar flagellum(monotrichous) covered with sheath that is contiguous , also acts as mechanosensor, known to contribute to virulence of the…

Chlamydia: The Silent Killer Javier Martin Waukesha County Technical College Section 11274 Instructor: Dr. Tracy Neher April 30, 2017 Chlamydia: The Silent Killer A sexually transmitted infection that affects approximately 3 million Americans per year with a yearly cost of 2.1 billion dollars for treatment and prevention is caused by the bacterial pathogen Chlamydia trachomatis. Known as the silent disease for its ability to conceal itself in the body, chlamydia…

Biochemical foundation for each of the four enzymatic assays performed on each cellular fraction. We performed various assays on each of the four log phase culture fractions, as well as the extracellular fraction from a stationary phase culture, to test the localization of the enzymes. For the protease assay, a specific soluble chromogenic substrate called azocasein was employed to determine presence of enzyme activity. The degradation of this substrate in trichloroacetic acid produces a colour…