Gastric chief cell
Human chief cells near tip of black pointer
A gastric chief cell (or peptic cell, or gastric zymogenic cell) is a type of cell in the stomach that releases pepsinogen and gastric lipase and is the cell responsible for secretion of chymosin in ruminants. The cell stains basophilic upon H&E staining due to the large proportion of rough endoplasmic reticulum in its cytoplasm. Gastric chief cells are generally located deep in the mucosal layer of the stomach lining.
Chief cells release the zymogen (enzyme precursor) pepsinogen when stimulated by a variety of factors including cholinergic activity from the vagus nerve and acidic condition in the stomach. Gastrin and secretin may also act as secretagogues.
The terms chief cell and zymogenic cell are often used without the word "gastric" to name this type of cell. However those terms can also be used to describe other cell types (for example, parathyroid chief cells). Chief cells are also known as peptic cells.
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- Johnson. Gastrointestinal Physiology 6th Edition. Mosby. 2001
- Anatomy Atlases - Microscopic Anatomy, plate 01.05
- Histology image: 22201loa – Histology Learning System at Boston University - "Ultrastructure of the Cell: chief cells and enteroendocrine cell"
- Histology image: 11304loa – Histology Learning System at Boston University - "Digestive System: Alimentary Canal: fundic stomach, gastric glands, base"
- "chief cell" at Dorland's Medical Dictionary
- Physiology: 6/6ch4/s6ch4_8 - Essentials of Human Physiology