News tagged with abscesses

Genome blueprint for horse and human vaccines

Two strains of Streptococcus bacteria, that have evolved to cause potentially fatal infections in either horses or humans, use the same box of tricks to cause disease. Exploiting their genetic similarities could lead to novel ...

Jul 14, 2011
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Preventing needless dental emergencies

The number of patients hospitalized for dental infections that could have been prevented with regular care or in-office root canals rose nearly 42 percent from 2000 to 2008, according to a first-of-its-kind study. In contrast, ...

Nov 10, 2014
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Experts warn of misbehaving tooth fairy

Opinions of the tooth fairy as kind and giving may need to be revised following "mounting reports of less child-friendly activity", says a paper published in the BMJ Christmas edition and appearing online today.

Dec 13, 2012
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Abscess

An abscess (Latin: abscessus) is a collection of pus (dead neutrophils) that has accumulated in a cavity formed by the tissue in which the pus resides due to an infectious process (usually caused by bacteria or parasites) or other foreign materials (e.g., splinters, bullet wounds, or injecting needles). It is a defensive reaction of the tissue to prevent the spread of infectious materials to other parts of the body. One example of an abscess is a BCG-oma, which is caused because of incorrect administration of the BCG vaccine.

The organisms or foreign materials kill the local cells, resulting in the release of cytokines. The cytokines trigger an inflammatory response, which draws large numbers of white blood cells to the area and increases the regional blood flow.

The final structure of the abscess is an abscess wall, or capsule, that is formed by the adjacent healthy cells in an attempt to keep the pus from infecting neighboring structures. However, such encapsulation tends to prevent immune cells from attacking bacteria in the pus, or from reaching the causative organism or foreign object.

Abscesses must be differentiated from empyemas, which are accumulations of pus in a preexisting rather than a newly formed anatomical cavity.

This text uses material from Wikipedia, licensed under CC BY-SA

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