What is the main function of prostaglandin during inflammation?

• A. Stimulate leukocyte production
• B. Promote vasoconstriction
• C. Increase blood vessel permeability
• D. Initiate clot formation

Answer: (C)

Prostaglandins play a critical role in the inflammatory response, particularly by increasing blood vessel permeability. This increase allows essential immune cells, nutrients, and other substances to move from the bloodstream into the affected tissues more easily. As a result, prostaglandins facilitate the delivery of leukocytes and other components necessary for a proper immune response, thus contributing to the overall healing process during inflammation. Their action helps to ensure that the body can effectively combat pathogens, manage tissue damage, and initiate repair processes.

In contrast, while leukocyte production is an important aspect of the immune response, it is not primarily mediated by prostaglandins. Vasoconstriction generally opposes the effects of inflammation, as the response to injury typically involves vasodilation and increased blood flow. Additionally, although clot formation is a key part of the hemostatic response, it is primarily driven by other factors, such as platelets and clotting factors, rather than directly by prostaglandins. Thus, the primary function of prostaglandins during inflammation is to enhance blood vessel permeability, facilitating a more robust inflammatory and healing response.