PMID- 23885956 OWN - NLM STAT- MEDLINE DCOM- 20140131 LR - 20161125 IS - 1520-5118 (Electronic) IS - 0021-8561 (Linking) VI - 61 IP - 33 DP - 2013 Aug 21 TI - Transepithelial permeability studies of flavan-3-ol-C-glucosides and procyanidin dimers and trimers across the Caco-2 cell monolayer. PG - 7932-40 LID - 10.1021/jf402019f [doi] AB - In this study the permeability of two flavanol-C-glucosides (FCglcs) and five dimeric and trimeric flavan-3-ols, namely, procyanidins (PCs), was investigated with the human colon carcinoma cell line (Caco-2) model. These compounds can be found especially in cocoa, and they are of great interest due to their assumed beneficial health effects. Transepithelial electrical resistance (TEER) and capacitance were measured online with a CellZscope device prior to and during the whole experiment to guarantee the maintenance of the barrier properties. The transport experiments with pure, single compounds (50-300 muM) from apical to basolateral side showed slight permeation of PCs A2, B2, and B5 and cinnamtannin B1 (CB1) as well as (-)-catechin-6-C-glucoside (C6Cglc) and (-)-catechin-8-C-glucoside (C8Cglc) of about 0.02-0.2% after 24 h. Transport of PC C1 could not be detected. Inhibition of P-glycoprotein (Pgp) increased the permeation of PC B2 and CB1 to the basolateral side, which indicates that Pgp counteracts the transport of these compounds. Metabolites (epicatechin, 3'- and 4'-O-epicatechin) in very small amounts were detectable only for PC B2. These are the first data concerning the permeability of flavan-3-ol-C-glucosides across the Caco-2 cell monolayer. FAU - Hemmersbach, Sarah AU - Hemmersbach S AD - Institute of Food Chemistry, Westfalische Wilhelms-Universitat Munster, Munster, Germany. FAU - Brauer, Susanne S AU - Brauer SS FAU - Huwel, Sabine AU - Huwel S FAU - Galla, Hans-Joachim AU - Galla HJ FAU - Humpf, Hans-Ulrich AU - Humpf HU LA - eng PT - Journal Article DEP - 20130808 PL - United States TA - J Agric Food Chem JT - Journal of agricultural and food chemistry JID - 0374755 RN - 0 (Biflavonoids) RN - 0 (Flavonoids) RN - 0 (Glucosides) RN - 0 (Plant Extracts) RN - 0 (Proanthocyanidins) RN - 35HDD3NRIE (flavan-3-ol) RN - 4852-22-6 (procyanidin) RN - 8R1V1STN48 (Catechin) SB - IM MH - Biflavonoids/chemistry/*metabolism MH - Caco-2 Cells MH - Catechin/chemistry/*metabolism MH - Dimerization MH - Epithelial Cells/*metabolism MH - Flavonoids/*metabolism MH - Glucosides/chemistry/*metabolism MH - Humans MH - Molecular Structure MH - Permeability MH - Plant Extracts/chemistry/*metabolism MH - Proanthocyanidins/chemistry/*metabolism EDAT- 2013/07/28 06:00 MHDA- 2014/02/01 06:00 CRDT- 2013/07/27 06:00 PHST- 2013/07/27 06:00 [entrez] PHST- 2013/07/28 06:00 [pubmed] PHST- 2014/02/01 06:00 [medline] AID - 10.1021/jf402019f [doi] PST - ppublish SO - J Agric Food Chem. 2013 Aug 21;61(33):7932-40. doi: 10.1021/jf402019f. Epub 2013 Aug 8.