Source:http://linkedlifedata.com/resource/pubmed/id/15618650
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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
1
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| pubmed:dateCreated |
2004-12-27
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| pubmed:abstractText |
To investigate the transport function of the blood-brain barrier (BBB), we employed an in vitro model of the BBB, consisting of a co-culture of porcine brain capillary endothelial cells (BCECs) with rat astrocytes. Porcine BCECs were cultured on a filter insert with rat astrocytes on the underlying plastic well. Rat astrocytes induced characteristic BBB properties of porcine BCECs, such as gamma-glutamyl-transpeptidase activity and intercellular adhesion of porcine BCECs. Next, the transport properties of P-glycoprotein (P-gp) substrate and several anionic compounds across the co-cultured porcine BCECs were characterized. Expression of P-gp was detected by immunocytochemistry, and efflux-directed transport of the P-gp substrate [(3)H]daunomycin was observed. Luminal-to-abluminal transport of the monocarboxylic acid transporter 1 (MCT1) substrate [(14)C]benzoic acid was saturable, and the K(m) value (3.05 mM) was similar to that for brain uptake observed in vivo. Abluminal-to-luminal transport of [(14)C]benzoic acid was also saturable, indicating that the monocarboxylic acid transporter of the BBB contributes to the efflux from the brain as well as to blood-to-brain influx. Abluminal-to-luminal transport of organic anions, [(3)H]dehydroepiandrosterone sulfate, [(3)H]estrone sulfate and [(3)H]estradiol 17beta-D-glucuronide was significantly higher than the corresponding luminal-to-abluminal transport. These results demonstrate the presence of multiple efflux transport pathways in this in vitro model.
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| pubmed:language |
eng
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| pubmed:journal | |
| pubmed:status |
PubMed-not-MEDLINE
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| pubmed:issn |
1347-4367
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| pubmed:author | |
| pubmed:issnType |
Print
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| pubmed:volume |
17
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| pubmed:owner |
NLM
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| pubmed:authorsComplete |
Y
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| pubmed:pagination |
34-41
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| pubmed:year |
2002
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| pubmed:articleTitle |
Evaluation of blood-brain barrier transporters by co-culture of brain capillary endothelial cells with astrocytes.
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| pubmed:affiliation |
Faculty of Pharmaceutical Sciences, Kanazawa University, Japan.
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| pubmed:publicationType |
Journal Article
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