Pathophysiology
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, 2
Pathophysiology
Discussion 1
Inflammation is a complex biological reaction that occurs at the site of injury by
pathogens, damaged tissues, or chemical agents. It is an inflammatory response intended to
remove the initial cause of cell damage, dead cells, and tissues and to initiate repair (Chen et al.,
2018). The process of inflammation during an infection involves the following steps and factors.
The first step is the Recognition of pathogens. There are a number of cells in the human body
called macrophages, which can have receptors that can detect structures on pathogenic organisms
like bacteria and viruses. This Recognition results in their becoming mobilized or awakened in
some way. Another step that takes place during an infection is the release of inflammatory
mediators. Some of the chemicals emitted by cells like the activated macrophage include
histamine, bradykinin, cytokines, and prostaglandins, which trigger inflammation. These
mediators relax blood vessels and increase the walls' permeability to other immune cells and
fluids.
The next inflammatory process during an infection is Vasodilation and Increased
Permeability. This involves migrating fluids, proteins, and cells to the region where the pathogen
invades the body (Megha et al., 2021). This results in increased vascular permeability and blood
flow that ensures neutrophil antibodies and other fluids from the blood can pass through blood
vessel walls and access the infected tissues. This leads to what is commonly referred to as
inflammation, swelling, reddening, heat, and pain. Another related benefit is the ability to
remove pathogens and damaged tissue. Neutrophils and macrophages are examples of
neutrophils that engulf and kill pathogens. Through liquefaction, fluids, dead cells, and