Which of the following is associated with PAS positive Macrophages
**Core Concept**
PAS (Periodic Acid-Schiff) positive macrophages are associated with the accumulation of glycoproteins and glycolipids in the cytoplasm of macrophages, which is a hallmark of certain diseases. This phenomenon is often seen in conditions characterized by excessive production of mucopolysaccharides.
**Why the Correct Answer is Right**
The presence of PAS positive macrophages is typically seen in conditions like Gaucher's disease, where there is a deficiency of glucocerebrosidase enzyme, leading to the accumulation of glucocerebroside in the lysosomes of macrophages. This accumulation results in the characteristic PAS positivity. The glucocerebroside is a glycosphingolipid, which is a type of glycolipid that is usually broken down by the enzyme glucocerebrosidase. However, in Gaucher's disease, this breakdown does not occur, leading to the accumulation of glucocerebroside in the macrophages.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because it does not specifically relate to the accumulation of glycoproteins and glycolipids in macrophages.
* **Option B:** This option is incorrect because it refers to a different type of cellular reaction, which is not characterized by PAS positivity.
* **Option D:** This option is incorrect because it refers to a different type of cellular reaction, which is not associated with the accumulation of glycoproteins and glycolipids in macrophages.
**Clinical Pearl / High-Yield Fact**
Gaucher's disease is a rare genetic disorder that affects the breakdown of glycolipids in the body, leading to the accumulation of these substances in various organs, including the spleen, liver, and bone marrow. The presence of PAS positive macrophages is a key diagnostic feature of this condition.
**Correct Answer: C. Gaucher's disease**