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Gastric chief cell

Chief cell
File:Chief cells.JPG
Human chief cells near tip of black pointer
Details
Latin exocrinocytus principalis
Identifiers
Code TH H3.04.02.1.00031
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TH Template:Str mid/core.html {{#property:P1694}}
TE {{#property:P1693}}
FMA Template:FMA
Anatomical terminology

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.[1] 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.[2]

It works in conjunction with the parietal cell, which releases gastric acid, converting the pepsinogen into pepsin.

Nomenclature

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.

See also

References

  1. ^ Kitamura, N.; A. Tanimote, E. Hondo, A. Andren D.F. Cottrell, M. Sasaki, and J. Yamada. (2001). "Immunohistochemical study of the ontogeny of prochymosin--and pepsinogen-producing cells in the abomasum of sheep". Anatomia, Histologia, Embryologia. 30 (4): 231–235. PMID 11534329. doi:10.1046/j.1439-0264.2001.00326.x. 
  2. ^ Johnson. Gastrointestinal Physiology 6th Edition. Mosby. 2001

External links