Biomaterial Database

The influence of changes in buccal potential difference on the buccal absorption of propranolol. 1989

A Hitoglou-Makedou, and A Hedges, and P Turner

Department of Clinical Pharmacology, St Bartholomew's Hospital, London, UK.

A buccal potential difference (b.p.d.) exists across the mucous membrane of the mouth, which can be made less negative by contact with aspirin. The influence of changing the b.p.d. with aspirin on the buccal absorption of propranolol from a series of buffers of pH5-10 has been studied in eight volunteers. The study confirmed that the buccal absorption of propranolol was markedly pH dependent, but pretreatment of the buccal membrane with aspirin had no influence on the absorption of propranolol.

UI	MeSH Term	Description	Entries
D009061	Mouth Mucosa	Lining of the ORAL CAVITY, including mucosa on the GUMS; the PALATE; the LIP; the CHEEK; floor of the mouth; and other structures. The mucosa is generally a nonkeratinized stratified squamous EPITHELIUM covering muscle, bone, or glands but can show varying degree of keratinization at specific locations.	Buccal Mucosa,Oral Mucosa,Mucosa, Mouth,Mucosa, Oral
D011433	Propranolol	A widely used non-cardioselective beta-adrenergic antagonist. Propranolol has been used for MYOCARDIAL INFARCTION; ARRHYTHMIA; ANGINA PECTORIS; HYPERTENSION; HYPERTHYROIDISM; MIGRAINE; PHEOCHROMOCYTOMA; and ANXIETY but adverse effects instigate replacement by newer drugs.	Dexpropranolol,AY-20694,Anaprilin,Anapriline,Avlocardyl,Betadren,Dociton,Inderal,Obsidan,Obzidan,Propanolol,Propranolol Hydrochloride,Rexigen,AY 20694,AY20694,Hydrochloride, Propranolol
D002021	Buffers	A chemical system that functions to control the levels of specific ions in solution. When the level of hydrogen ion in solution is controlled the system is called a pH buffer.	Buffer
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000042	Absorption	The physical or physiological processes by which substances, tissue, cells, etc. take up or take in other substances or energy.
D013050	Spectrometry, Fluorescence	Measurement of the intensity and quality of fluorescence.	Fluorescence Spectrophotometry,Fluorescence Spectroscopy,Spectrofluorometry,Fluorescence Spectrometry,Spectrophotometry, Fluorescence,Spectroscopy, Fluorescence