Linked Life Data

18407686

Source:http://linkedlifedata.com/resource/pubmed/id/18407686

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
2008-5-13
pubmed:abstractText
Membrane destabilizing properties and increased efflux of doxorubicin from liposomes caused by basic butylated methacrylate copolymer (BBMC), better known under its commercial trade name EUDRAGIT E, have been described in the scientific literature. Here, we investigated the effect of BBMC on suspended and filter-grown Caco2 cells with respect to apical-to-basal transport and membrane permeabilization using transport assays, trypan blue exclusion assay, measurements of transepithelial electrical resistance (TEER), confocal laser scanning microscopy, and transmission electron microscopy. The effect of inhibiting protein phosphatase 2A (PP2A) by okadaic acid was investigated by measuring TEER, but a link between PP2A and the observed effects could not be established. Overall, membrane permeabilization of Caco2 cells by BBMC was demonstrated, which went along with increased apical-to-basal transport of the model compounds mannitol, talinolol, and trospium. The effect was concentration- and time-dependent, and reversible. Enhancement occurred at polymer concentrations as low as 20 microg/mL.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
1526-4602
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
9
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1398-405
pubmed:meshHeading
pubmed:year
2008
pubmed:articleTitle
Characterization of the epithelial permeation enhancing effect of basic butylated methacrylate copolymer--in vitro studies.
pubmed:affiliation
Department of Biopharmaceutics and Pharmaceutical Technology, Johannes Gutenberg University, Saudinger Weg 5, Mainz, Germany.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't