AE type of amyloid is seen in –
**Core Concept**
Amyloidosis is a group of diseases characterized by the deposition of amyloid fibrils, a specific type of protein, in various tissues. There are several types of amyloidosis, each with distinct clinical features and underlying mechanisms. One of these types is AA amyloidosis, which is associated with chronic inflammation and infection.
**Why the Correct Answer is Right**
AA amyloidosis is characterized by the deposition of serum amyloid A (SAA) protein, which is produced in response to chronic inflammation and infection. SAA is a group of apolipoproteins that bind to high-density lipoprotein (HDL) and are involved in the transport of lipids in the bloodstream. In AA amyloidosis, the chronic production of SAA leads to its deposition in tissues, resulting in amyloid fibrils that can cause tissue damage and organ dysfunction.
**Why Each Wrong Option is Incorrect**
* **Option A:** Not mentioned in the context of amyloidosis.
* **Option B:** Associated with hereditary transthyretin amyloidosis, not AA amyloidosis.
* **Option C:** Associated with primary (AL) amyloidosis, not AA amyloidosis.
**Clinical Pearl / High-Yield Fact**
AA amyloidosis is often seen in patients with chronic inflammatory diseases such as rheumatoid arthritis, tuberculosis, and chronic infections. Early recognition and treatment of these underlying conditions can help prevent the development of AA amyloidosis.
**Correct Answer:** D.