Pyogenesi

Pyogenesi is a term that refers to the formation of pus. Pus, also known as purulent exudate, is a thick, yellowish or greenish fluid produced by the body during an inflammatory response, typically to infection. It is composed of dead white blood cells, primarily neutrophils, along with liquefied tissue debris, microbes, and serum. The presence of pus usually indicates an active infection, most commonly caused by bacteria.

The process of pyogenesi begins when the body's immune system detects invading pathogens. Neutrophils, a type of white blood cell, are attracted to the site of infection. They engulf and destroy the bacteria through a process called phagocytosis. During this process, the neutrophils themselves can be damaged and die, contributing to the formation of pus. The release of enzymes by these dying cells further breaks down surrounding tissue, creating a liquefied area that eventually accumulates as pus.

Pyogenesi is a hallmark of certain types of infections, such as abscesses, boils, and cellulitis. While pus formation is a sign of the body's defense mechanisms at work, it can also cause localized pain, swelling, and redness. Medical intervention, such as drainage of the pus and antibiotic treatment, is often necessary to clear the infection and resolve the inflammation.