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Current Drug Metabolism

Editor-in-Chief

ISSN (Print): 1389-2002
ISSN (Online): 1875-5453

The Role of Blood-Brain Barrier Studies in the Pharmaceutical Industry

Author(s): Andreas Reichel

Volume 7, Issue 2, 2006

Page: [183 - 203] Pages: 21

DOI: 10.2174/138920006775541525

Price: $65

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Abstract

The blood-brain barrier (BBB) remains one of the greatest challenges for the discovery and development of treatments for CNS disorders, which to this day remains one of the riskiest disease areas in terms of clinical success rates. Although the BBB is currently seen predominantly as a permeability obstacle for CNS drug delivery, it is becoming increasingly clear that the BBB has many more implications for the pharmaceutical industry impacting on CNS pharmacology and pathology, CNS pharmacokinetics and pharmacodynamics, and adverse CNS effects, to name but a few areas. The present review does not intend to summarize the activities in the field of BBB research per se, which has been accomplished by a number of excellent recent reviews, but instead to provide an overview of the role of BBB studies from a pharmaceutical industry perspective. This review will elaborate on the specific needs in terms of BBB-related issues across the different drug discovery and development phases, i.e. target identification and validation, lead generation and optimization, candidate selection and profiling, preclinical development and clinical studies. The specific approaches taken will be discussed in terms of specific requirements, questions to be asked, feasibility, interpretability, and impact. It becomes clear that few of the existing BBB models fully meet the requirements of the industrialized drug discovery process, highlighting the need for an array of new or modified tools and approaches that are more effective in helping make decisions which are more specifically tailored to the various stages of the lengthy process from target to the clinic. In looking at the numerous ongoing activities in the area of BBB research from the drug discovery and development point of view, an attempt has been made to place a stronger emphasis on the applicability of particular techniques and approaches, to identify gaps and areas for future activities. In order to materialize the considerable knowledge gained in recent years, the review is intended to foster an increased awareness of the need to better integrate basic academic research with the specific requirements of the pharmaceutical industry for the search of effective and safe new CNS medicines.

Keywords: Blood-Brain Barrier, Drug Discovery and Development, Drug Delivery, In vitro, In vivo, CNS, CSF, Pharmacokinetics


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