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Pentadecapeptide BPC 157, Cimetidine, Ranitidine, Bromocriptine, and Atropine Effect in Cysteamine Lesions in Totally Gastrectromized Rats (A Model for Cytoprotective Studies)

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Abstract

A superior effectiveness in various lesionassays was noted for the novel pentadecapeptide BPC 157,originated from human gastric juice protein (BPC) andclaimed to be a cytoprotective agent. From this viewpoint, as a previously untreatedexperimental improvement to create an acid-freeenvironmental for cytoprotection studies, totalgastrectomy was done 24 hr before the ulcerogenicprocedure. In the absence of stomach and gastric acid, the damagingeffects of cysteamine (400 mg/kg subcutaneously, death24 hr thereafter), to date thought to be an acid-relatedduodenal ulcerogen, and the BPC 157 cytoprotective effect (10 mug or 10 ng/kg intraperitoneally)were further challenged. BPC 157 was compared withreference agents [cimetidine (50), ranitidine (10),omeprazole (10), bromocriptine (10) and atropine (10) (mg/kg intraperitoneally, 1 hr beforecysteamine] known to be also cytoprotective. In naiverats, with intact stomach, all of them showed a strongbeneficial effect. Interestingly, in gastrectomizedanimals, the application of BPC 157 or the referenceagents before cysteamine significantly prevented theotherwise severe duodenal lesion development noted inthe control gastrectomized cysteamine rats. In groups without cysteamine, no lesions were noted(laparotomy, gastrectomy only, 24 or 48 hr postsurgicalperiod), nor was lesion potentiation seen incysteamine-treated laparotomized animals. In summary,these findings -- equal damaging effect ofcysteamine and equal protection of pentadecapeptide BPC157 and reference agents in gastrectomized and rats withintact stomach -- seem to be particularly relevantfor a cytoprotective viewpoint. Without a stomach,the cysteamine damaging effect was convincingly definedas an essential gastric acid-independent injury(analogous to ethanol gastric lesions). Likewise, a high “cytoprotective capacity,”apparently acid independent, common for all testedagents (novel pentadecapeptide BPC 157, cimetidine,ranitidine, omeprazole and atropine) could be clearlystressed.

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  1. Predrag Sikiric
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  2. Darko Mikus
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  3. Sven Seiwerth
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Sikiric, P., Mikus, D., Seiwerth, S. et al. Pentadecapeptide BPC 157, Cimetidine, Ranitidine, Bromocriptine, and Atropine Effect in Cysteamine Lesions in Totally Gastrectromized Rats (A Model for Cytoprotective Studies). Dig Dis Sci 42, 1029–1037 (1997). https://doi.org/10.1023/A:1018893220943

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