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Effect of chronically administered pentagastrin on the nude mouse
Author(s) -
Johnson Frank E.,
Laregina Marie C.,
Devine Joseph E.,
Hudd Charles A. M.
Publication year - 1988
Publication title -
journal of surgical oncology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.201
H-Index - 111
eISSN - 1096-9098
pISSN - 0022-4790
DOI - 10.1002/jso.2930390303
Subject(s) - pentagastrin , gastrin , medicine , endocrinology , pancreas , stomach , intraperitoneal injection , saline , body weight , muscle hypertrophy , gastric acid , secretion
The nude mouse has been used to evaluate the effect of gastrin on xenografted tissues, but little is known about long‐term actions of gastrin on native organs in this species. We investigated the impact of chronically administered synthetic pentagastrin on the nude mouse. Six groups of mice (eight animals each) received intraperitoneal injections twice daily for 14 days with saline or pentagastrin at 0.5, 5, 50, 500, or 5,000 g/kg. Behavior, overall health, and body weight were unaffected by this treatment. Of the seven organs examined at necropsy, only the pancreas showed a weight gain in response to pentagastrin treatment, and this occurred only at the highest dose. Total DNA content of the pancreas decreased in a dose‐related manner, indicating hypoplasia, whereas pancreatic RNA content increased, indicating hypertrophy. No effect on the stomach was observed. This work indicates that the nude mouse is less sensitive than other species to visceral growth regulation by pentagastrin, and that toxicity is low.