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. 1992 Nov-Dec;65(6):775–829.

The pathobiology of the human enterochromaffin-like cell.

I M Modlin 1, A K Nangia 1
PMCID: PMC2589779  PMID: 1341078

Abstract

The significance of the enterochromaffin-like (ECL) cell as a critical endocrine regulator of gastric fundic mucosal function has only recently been recognized. Although the percentage of these cells present in the human fundic mucosa is less than that in rodents, the observation that they secrete histamine and are probably important modulators of parietal cell function has resulted in their attaining some considerable biological significance. The further identification of gastrin and somatostatin receptors on the surface of the ECL cells has suggested that other neurohormonal influences may be significant in the regulation of parietal cell function, utilizing the ECL cell as an intermediate modifier. While abnormalities of ECL cells in the human stomach (hyperplasia/neoplasia) have been mostly confined to observations in patients with pernicious anemia and atrophic gastritis, the recent recognition of hyperplasia in pharmacotherapeutically induced achlorhydric or hypochlorhydric states has excited considerable interest. It has been proposed that the generation of luminal hypo- or achlorhydria by powerful acid inhibitory pharmacotherapy may result in hypergastrinemia. This condition is responsible initially for the development of hyperplasia and, subsequently, possibly even neoplasia of the ECL system of the fundic mucosa. This phenomenon seems to be prevalent in rodents but has so far been only rarely observed in humans, e.g., pernicious anemia, atrophic gastritis. In particular, patients with the gastrinoma component of the multiple endocrine neoplasia type I syndrome exhibit ECL-cell hyperplasia and neoplasia after exposure to acid inhibitory pharmacotherapy. It is therefore likely that an underlying genomic phenomenon is necessary prior to the induction of hyperplasia and subsequent neoplastic transformation. The scientific evaluation of the relationship between gastrin, ECL-cell function, and the development of hyperplasia and neoplasia may provide some important information in regard to the molecular evolution of gastrointestinal neuroendocrine disease states. It is possible that the future pharmacotherapy of acid secretory disease may require regulation not only of parietal cell but of ECL-cell function.

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Selected References

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