What Is Cell Regeneration?
Regeneration (regeneration) refers to the proliferation of the same kind of cells that occurs to repair a defect. Explanation: Regeneration is a type of cell proliferation; This type of proliferation is essentially to repair defects, not to absorb necrotic substances or eliminate inflammatory factors (such as locally proliferated macrophages, etc.); It is exactly the same as the defective parenchymal cells. The regeneration is divided into physiological regeneration and pathological regeneration.
Cell regeneration
- According to the strength of regeneration ability, human cells can be divided into three categories:
- Labile cells are a large class of cells that have a strong ability to regenerate. Under physiological conditions, this
- Stable cells have a strong potential for regeneration. Under physiological conditions, it is in the stationary phase (G0) of the cell cycle and does not proliferate. However, when it is damaged or stimulated, it enters the pre-synthesis stage (G1), begins to divide and proliferate, and participates in regeneration and repair.
- These cells include parenchymal cells of various glands and adenoid organs, such as the mucosal glands of the digestive tract, urinary tract, and reproductive tract, liver, pancreas, salivary glands, endocrine glands, sweat glands, sebaceous gland parenchymal cells, and renal tubules. Epithelial cells and so on.
- Permanent cells are cells that do not have the ability to regenerate. Such cells leave the cell cycle after birth and permanently stop mitosis. This category includes nerve cells (including central neurons and peripheral ganglion cells). In addition, myocardial cells and skeletal muscle cells have very poor regeneration capabilities. There is no practical significance for regeneration and repair. Once the damage is damaged, they are permanently lost and replaced. To scar repair.