In ‘C Reactive Protein’, the letter ‘C’ is sho form for ?
**Core Concept**
The C-Reactive Protein (CRP) is a protein produced by the liver in response to inflammation and infection. It is an acute-phase reactant that increases in plasma concentration in response to inflammation.
**Why the Correct Answer is Right**
The 'C' in CRP stands for **Capsular**. This refers to the protein's ability to bind to the C-polysaccharide of the pneumococcal capsule, a characteristic that was first observed when CRP was discovered. The binding of CRP to the pneumococcal capsule leads to the activation of the complement system, which helps to eliminate the pathogen.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect as there is no evidence to support the involvement of the "Capsular" polysaccharide in the discovery of CRP.
* **Option B:** This option is incorrect as the 'C' in CRP does not stand for "Complement", although CRP does interact with the complement system.
* **Option C:** This option is incorrect as the 'C' in CRP does not stand for "Cytokine", although cytokines are involved in the inflammatory response that leads to CRP production.
**Clinical Pearl / High-Yield Fact**
CRP is a widely used marker of inflammation and infection, and its measurement is often used to monitor the response to treatment in patients with conditions such as pneumonia and rheumatoid arthritis.
**Correct Answer: C. Capsular.**