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Strategies to Improve Stability and Bioavailability of Peptide Drugs

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Peptides play a major role in a diversity of biological functions, such as hormones, growth factors and neuropeptides. However, the development of peptides as therapeutic drugs has been limited by their poor metabolic stability and their inability to readily cross membrane barriers such as the intestinal and blood-brain barriers. The aim of peptide medicinal chemistry is to develop strategies to overcome these problems. Recent progress in chemical synthesis and design have resulted in several strategies for producing modified peptides and mimetics with lower susceptibility to proteolysis and improved bioavailability, which has increased the probability of obtaining useful drugs structurally related to parent peptides. This review describes different experimental approaches to transforming a peptide into a potential drug and provides examples of the usefulness of these strategies.
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Keywords: Peptide Drugs; blood-brain barriers

Document Type: Review Article

Affiliations: Department of Neurology, University of Texas Medical Branch, 301 University Boulevard, Galveston, TX 77555, USA.

Publication date: January 1, 2004

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