title: Inhibitory effects of crude drug components on the proliferation of cultured human mesangial cells.
abstract: The effects of a component of an Oriental medicine and green tea plants utilized for the traditional beverage on the proliferation of mesangial cells were determined in terms of the 3H-thymidine uptake. When magnesium lithospermate B was added to the medium of the mesangial cell culture, it suppressed the proliferation of mesangial cells at a concentration of 50 micrograms/ml. The 3H-thymidine uptake began to display an inhibitory action from the 6.25 micrograms/ml (-)-epicatechin 3-O-gallate, (-)-epigallocatechin 3-O-gallate or green tea tannin mixture, showing a more conspicuous inhibition at 50 micrograms/ml that did the magnesium lithospermate B at the corresponding concentration. In particular, (-)-epigallocatechin 3-O-gallate, the predominant component of the green tea tannin mixture, exerted an inhibitory effect at a relatively low concentration.
authors.affiliation: Research Institute for Wakan-Yaku, Toyama Medical and Pharmaceutical University, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Yokozawa
authors.forename: H
authors.initials: H
authors.lastname: Oura
authors.forename: M
authors.initials: M
authors.lastname: Iwano
authors.forename: K
authors.initials: K
authors.lastname: Dohi
authors.forename: M
authors.initials: M
authors.lastname: Hattori
mesh_terms: D002392:Catechin / Q000031:analogs & derivatives / Q000494:pharmacology; D002455:Cell Division / Q000187:drug effects; D002478:Cells, Cultured; D003864:Depression, Chemical; D004365:Drugs, Chinese Herbal / Q000494:pharmacology*; D005920:Glomerular Mesangium / Q000166:cytology / Q000187:drug effects*; D006801:Humans; D013662:Tea
chemical_list: D004365:Drugs, Chinese Herbal; D013662:Tea; C061091:lithospermate B; D002392:Catechin; C062669:epicatechin gallate; C045651:epigallocatechin gallate