| Optimization of a novel bioerodible device based on auto-catalyzed poly(ortho esters) for controlled delivery of tetracycline to periodontal pocket. | |
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MedLine Citation:
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PMID: 11374468 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Local delivery of antimicrobial agents in inflamed periodontal pocket has been shown to be effective in reducing periodontopathic microorganisms. This research focuses on developing and characterizing bioerodible formulations based on auto-catalyzed poly(ortho esters) (POExLAy) for modulated release of tetracycline over 2 weeks. POExLAy are a new versatile family of POE-containing lactoyl lactyl dimers in the polymer backbone. By modifying the proportion of lactic acid in the polymer, viscous or solid materials having different degradation rate can be produced. The formulations can be either injected or placed as a solid device directly into the periodontal pocket. Tetracycline-free base incorporated into these materials was released within 10-14 days depending on polymer structure. Increase in lactic acid content in the polymer tended to increase the drug release rate and to reduce the initial lag time. Tetracycline release from such bioerodible delivery system occurs predominantly by surface erosion of the polymeric matrix, leading to kinetics which can be zero order. This periodontal drug delivery system is designed to be used as an adjunct in the treatment of periodontal diseases. Clinical studies are currently in progress. |
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Authors:
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K Schwach-Abdellaoui; A Monti; J Barr; J Heller; R Gurny |
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Publication Detail:
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Type: Comparative Study; Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Biomaterials Volume: 22 ISSN: 0142-9612 ISO Abbreviation: Biomaterials Publication Date: 2001 Jun |
Date Detail:
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Created Date: 2001-05-25 Completed Date: 2001-12-05 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 8100316 Medline TA: Biomaterials Country: England |
Other Details:
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Languages: eng Pagination: 1659-66 Citation Subset: IM |
Affiliation:
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School of Pharmacy, University of Geneva, Switzerland. khadija.schwach@pharm.unige.ch |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Biocompatible Materials* Catalysis Chromatography, High Pressure Liquid Delayed-Action Preparations Drug Carriers Drug Stability Humans Lactic Acid Molecular Structure Periodontal Pocket / drug therapy*, physiopathology* Polymers / chemistry* Spectrometry, Mass, Electrospray Ionization Structure-Activity Relationship Tetracycline / administration & dosage*, chemistry* |
| Chemical | |
Reg. No./Substance:
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0/Biocompatible Materials; 0/Delayed-Action Preparations; 0/Drug Carriers; 0/Polymers; 0/poly(ortho ester); 50-21-5/Lactic Acid; 60-54-8/Tetracycline |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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