Which of the following cells start producing collagen in case of Hepatic cirrhosis
**Core Concept**
In hepatic cirrhosis, the liver's inability to metabolize collagen precursors leads to an accumulation of these precursors in the bloodstream. As a result, various cell types are activated to produce collagen, contributing to the fibrotic process.
**Why the Correct Answer is Right**
The correct answer involves hepatic stellate cells (HSCs), which are activated in response to liver injury and play a key role in the development of cirrhosis. Upon activation, HSCs undergo a phenotypic transformation, becoming myofibroblast-like cells that produce excessive amounts of collagen. This process is mediated by the activation of various signaling pathways, including the TGF-β pathway, which promotes the expression of collagen genes.
**Why Each Wrong Option is Incorrect**
* **Option A:** Although macrophages are involved in the liver's response to injury, they are not primarily responsible for collagen production in cirrhosis.
* **Option B:** Hepatocytes are the main cell type responsible for liver function, including the production of proteins such as albumin and clotting factors. However, they are not the primary source of collagen in cirrhosis.
* **Option D:** Endothelial cells line blood vessels and are involved in various processes, including angiogenesis. However, they are not the primary cell type responsible for collagen production in cirrhosis.
**Clinical Pearl / High-Yield Fact**
The activation of hepatic stellate cells is a key event in the development of liver fibrosis, and targeting these cells may provide a therapeutic strategy for treating cirrhosis.
**Correct Answer: C. Hepatic stellate cells.**