| A model of an 'artificial stomach' for assessing the characteristics of an antacid. | |
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MedLine Citation:
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PMID: 2979268 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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A model of an 'artificial stomach' has been constructed in order to take into account some of the parameters lacking in conventional in vitro antacid evaluation, namely the interaction between secretory flux and variation in emptying fluxes, the presence of proteins, and the use of human gastric juice instead of an aqueous solution of hydrochloric acid. The 'artificial stomach' has two elements, the 'stomach' and the pH recording system. The 'stomach' includes a 'gastric' reservoir receiving secretory flux and is emptied by variable fluxes. Aluminium phosphate gel has been studied in 100 ml of 0.1 N HCl, without and with 1 or 5% meat extracts and also in 100 ml of human gastric juice. The antacid effect of 1 or 5% meat extracts has also been assessed. The antacid effect of aluminium phosphate was characterized by the pH rise of the 'gastric' contents, the buffering capacity, and the dilution of gastric contents. These factors were modulated by emptying fluxes. The same characteristics were found when antacid was studied in gastric juice. Proteins exerted a neutralizing effect and modified aluminium phosphate's antacid capacity. A mechanism for buffering capacity by cation aluminium is suggested. |
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Authors:
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J Vatier; F Lionnet; M T Vitré; M Mignon |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Alimentary pharmacology & therapeutics Volume: 2 ISSN: 0269-2813 ISO Abbreviation: Aliment. Pharmacol. Ther. Publication Date: 1988 Oct |
Date Detail:
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Created Date: 1991-12-19 Completed Date: 1991-12-19 Revised Date: 2000-12-18 |
Medline Journal Info:
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Nlm Unique ID: 8707234 Medline TA: Aliment Pharmacol Ther Country: ENGLAND |
Other Details:
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Languages: eng Pagination: 461-70 Citation Subset: IM |
Affiliation:
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Inserm U 10, C.H.U. Xavier Bichat, Paris, France. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Antacids
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pharmacology* Models, Biological Stomach / physiology* |
| Chemical | |
Reg. No./Substance:
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0/Antacids |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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