Resolution of inflammation caused by – rpt Q32
**Core Concept**
Inflammation is a complex biological response to tissue damage or injury, characterized by increased blood flow, vascular permeability, and leukocyte infiltration. The resolution of inflammation is a crucial process that restores tissue homeostasis and prevents excessive tissue damage.
**Why the Correct Answer is Right**
The resolution of inflammation is primarily mediated by the lipid-derived anti-inflammatory mediators, such as resolvins and protectins, which are derived from omega-3 fatty acids. These mediators act by promoting the clearance of pro-inflammatory cells, inhibiting the production of pro-inflammatory cytokines, and enhancing the function of anti-inflammatory cells, such as macrophages and regulatory T cells. The resolution of inflammation also involves the upregulation of specific receptors, such as the formyl peptide receptor-like 1 (FPRL1), which plays a crucial role in the clearance of pro-inflammatory cells.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not specify a mechanism for the resolution of inflammation. While antioxidants can reduce oxidative stress, they do not directly contribute to the resolution of inflammation.
**Option B:** This option is incorrect because it implies that the resolution of inflammation is primarily mediated by the suppression of the inflammatory response, rather than the promotion of a specific anti-inflammatory response.
**Option C:** This option is incorrect because it does not specify a known mechanism for the resolution of inflammation. While certain cytokines, such as interleukin-10 (IL-10), can have anti-inflammatory effects, they are not primarily responsible for the resolution of inflammation.
**Clinical Pearl / High-Yield Fact**
The omega-3 fatty acids, particularly EPA and DHA, have been shown to have anti-inflammatory effects and promote the resolution of inflammation. This is why they are often used as dietary supplements to reduce inflammation in conditions such as rheumatoid arthritis and asthma.
**Correct Answer: D. Lipid-derived anti-inflammatory mediators.**