AC biosusceptometry in the study of drug delivery

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Data

2005-06-15

Autores

Cora, L. A.
Romeiro, Fernando Gomes [UNESP]
Stelzer, M.
Americo, M. F.
Oliveira, R. B.
Baffa, O.
Miranda, JRA

Título da Revista

ISSN da Revista

Título de Volume

Editor

Elsevier B.V.

Resumo

Conventionally, pharmaceutical substances are administered orally because the gastrointestinal tract possesses the appropriate features for drug absorption. Nevertheless, the gastrointestinal tract physiology is complex and influenced by many factors. These factors must be completely understood for the optimization of oral drug delivery systems. Although in vitro tests provide information about release and drug absorption profiles, in vivo studies are essential, due to the biological variability. Several techniques have been employed in an attempt to conveniently characterize the behavior of solid dosage forms in vivo. The noninvasive biomagnetic technique of alternate current biosusceptometry (ACB) has been used in studies focusing on gastrointestinal motility and, more recently, to evaluate the performance of magnetic dosage forms. This article will discuss the main characteristics of AC biosusceptometry and its applicability for determination of the relationship between the human gastrointestinal tract and orally administered pharmaceutical dosage forms. (c) 2005 Elsevier B.V. All rights reserved.

Descrição

Palavras-chave

AC susceptometer, gastrointestinal motility, solid dosage forms, biomagnetic measurement, magnetic marker, magnetic tracer

Como citar

Advanced Drug Delivery Reviews. Amsterdam: Elsevier B.V., v. 57, n. 8, p. 1223-1241, 2005.