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Auto-fluorescent PAMAM-based dendritic molecules and their potential application in pharmaceutical sciences

El-Betany, Alaa M.M., Kamoun, Elbadawy A., James, Craig, Jangher, Abdulhakim, Aljayyoussi, Ghaith, Griffiths, Peter, McKeown, Neil B. and Gumbleton, Mark 2020. Auto-fluorescent PAMAM-based dendritic molecules and their potential application in pharmaceutical sciences. International Journal of Pharmaceutics 579 , 119187. 10.1016/j.ijpharm.2020.119187
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The epithelial permeation of water-soluble fluorescent PAMAM dendrons based on 7H-benz[de] benzimidazo [2,1-a] isoquinoline-7-one as a fluorescent core across epithelial cell models MDCK I and MDCK II has been quantified. Hydrodynamic radii have been derived from self-diffusion coefficients obtained via pulsed-gradient spin-echo Nuclear Magnetic Resonance (PGSE-NMR). Results indicate that these dendritic molecules are molecularly disperse, non-aggregating, and only slightly larger than their parent homologues. MDCK I permeability studies across epithelial barriers show that these dendritic molecules are biocompatible with the chosen epithelial in-vitro model and can permeate across MDCK cell monolayers. Permeability is demonstrated to be a property of dendritic size and cell barrier restrictiveness indicating that paracellular mechanisms play the predominant role in the transport of these molecules.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Pharmacy
Publisher: Elsevier
ISSN: 0378-5173
Date of First Compliant Deposit: 11 March 2020
Date of Acceptance: 26 February 2020
Last Modified: 13 Mar 2020 04:42

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