| Location-Dependent Coronary Artery Diffusive and Convective Mass Transport Properties of a Lipophilic Drug Surrogate Measured Using Nonlinear Microscopy. | |
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MedLine Citation:
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PMID: 23224981 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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PURPOSE: Arterial wall mass transport properties dictate local distribution of biomolecules or locally delivered dugs. Knowing how these properties vary between coronary artery locations could provide insight into how therapy efficacy is altered between arterial locations. METHODS: We introduced an indocarbocyanine drug surrogate to the lumens of left anterior descending and right coronary (LADC; RC) arteries from pigs with or without a pressure gradient. Interstitial fluorescent intensity was measured on live samples with multiphoton microscopy. We also measured binding to porcine coronary SMCs in monoculture. RESULTS: Diffusive transport constants peaked in the middle sections of the LADC and RC arteries by 2.09 and 2.04 times, respectively, compared to the proximal and distal segments. There was no statistical difference between the average diffusivity value between LADC and RC arteries. The convection coefficients had an upward trend down each artery, with the RC being higher than the LADC by 3.89 times. CONCLUSIONS: This study demonstrates that the convective and diffusive transport of lipophilic molecules changes between the LADC and the RC arteries as well as along their length. These results may have important implications in optimizing drug delivery for the treatment of coronary artery disease. |
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Authors:
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Joseph T Keyes; Bruce R Simon; Jonathan P Vande Geest |
Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-12-7 |
Journal Detail:
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Title: Pharmaceutical research Volume: - ISSN: 1573-904X ISO Abbreviation: Pharm. Res. Publication Date: 2012 Dec |
Date Detail:
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Created Date: 2012-12-10 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8406521 Medline TA: Pharm Res Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Graduate Interdisciplinary Program in Biomedical Engineering, The University of Arizona, Tucson, Arizona, 85721, USA. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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