An immunohistochemical study of the gastrointestinal endocrine cells in the ddY mice.
The distributions and frequencies of some endocrine cells in the gastrointestinal (GI) tract of ddY mice were studied with immunohistochemical method using 7 types of antisera against bovine chromogranin (BCG), serotonin, gastrin, cholecystokinin (CCK)-8, somatostatin, glucagon and human pancreatic polypeptide (HPP). All of 7 types of immunoreactive (IR) cells were identified. Most of IR cells in the intestinal portion were generally spherical or spindle in shape (open typed cell) while cells showing round in shape (close typed cell) were found in the intestinal gland and stomach regions occasionally. Their relative frequencies were varied according to each portion of GI tract. BCG-IR cells were demonstrated throughout whole GI tract except for the cecum and they were most predominant in the fundus and pylorus. Serotonin-IR cells were detected throughout whole GI tract and they were most predominant cell types in this species of mice. Gastrin-IR cells were restricted to the pylorus and CCK-8-IR cells were demonstrated in the pylorus, duodenum and jejunum with numerous frequencies in the pylorus. Somatostatin-IR cells were detected throughout whole GI tract except for the cecum and rectum and they showed more numerous frequencies in the stomach regions. In addition, glucagon-IR cells were restricted to the fundus, duodenum and jejunum with rare frequencies, and HPP-IR cells were restricted to the rectum only with rare frequency. In conclusion, some strain-dependent unique distributional patterns of gastrointestinal endocrine cells were found in GI tract of ddY mice.
Ku
Sae-kwang
SK
Pharmacology & Toxicology Lab., Central Research Laboratories, Dong-Wha Pharm. Ind. Co., Anyang 430-017, Korea.
Lee
Hyeung-sik
HS
Lee
Jae-hyun
JH
D000818:Animals; D015415:Biomarkers / Q000032:analysis; D002766:Cholecystokinin / Q000032:analysis; D002864:Chromogranins / Q000032:analysis; D019858:Enteroendocrine Cells / Q000166:cytology* / Q000276:immunology; D005260:Female; D005755:Gastrins / Q000032:analysis; D005934:Glucagon / Q000032:analysis; D007124:Immunoenzyme Techniques; D051379:Mice; D010191:Pancreatic Polypeptide / Q000032:analysis; D011498:Protein Precursors / Q000032:analysis; D012701:Serotonin / Q000032:analysis
D015415:Biomarkers; D002864:Chromogranins; D005755:Gastrins; C043710:PPY protein, human; D011498:Protein Precursors; D012701:Serotonin; D010191:Pancreatic Polypeptide; D005934:Glucagon; D002766:Cholecystokinin