title: Beneficial effects of Gosha-jinki-gan and green tea extract in rats with chemical cystitis.
abstract: The aim of this study was to characterize pharmacological effects of gosha-jinki-gan (GJG) and green tea extract (GTE), on urodynamic parameters, bladder receptors, and urinary cytokines in rats with cyclophosphamide (CYP)-induced cystitis. Urodynamic parameters in CYP-treated rats were measured using the cystometric method. Muscarinic and purinergic receptors in rat tissues were measured by radioreceptor assays. Urinary cytokine levels were measured with ELISA kits. GJG and GTE were orally administered to rats once a day for 7 days. The GJG treatment significantly ameliorated changes in urodynamic parameters in CYP-treated rats. Similar treatment with GTE slightly attenuated changes in urodynamic parameters. The maximal number of binding sites for [³H]NMS and [³H]αβ-MeATP in the bladder was significantly lower in CYP-treated rats than in sham rats. Such a reduction in receptor density was significantly attenuated by the GJG treatment. GTE treatment also significantly attenuated the down-regulation of muscarinic receptors, but not P2X receptors in bladders of rats with CYP-induced cystitis. The elevation in urinary cytokine levels in CYP-treated rats was effectively attenuated by GJG treatment. The elevation in cytokine levels in CYP-treated rats was alleviated by GTE treatment. In conclusion, GJG may be a pharmacologically useful plant extract for cystitis.
authors.affiliation: Department of Pharmacokinetics and Pharmacodynamics, School of Pharmaceutical Sciences, University of Shizuoka, Japan.
authors.forename: Sweety
authors.initials: S
authors.lastname: Nasrin
authors.forename: Ayaka
authors.initials: A
authors.lastname: Osano
authors.forename: Yoshihiko
authors.initials: Y
authors.lastname: Ito
authors.forename: Shizuo
authors.initials: S
authors.lastname: Yamada
mesh_terms: D000818:Animals; D000970:Antineoplastic Agents / Q000008:administration & dosage / Q000009:adverse effects*; D028241:Camellia sinensis; D003520:Cyclophosphamide / Q000008:administration & dosage / Q000009:adverse effects*; D018856:Cystitis, Interstitial / Q000139:chemically induced* / Q000188:drug therapy*; D004195:Disease Models, Animal; D004365:Drugs, Chinese Herbal / Q000008:administration & dosage / Q000627:therapeutic use*; D005260:Female; D007274:Injections, Intraperitoneal; D008517:Phytotherapy; D010936:Plant Extracts / Q000008:administration & dosage / Q000627:therapeutic use*; D018515:Plant Leaves; D051381:Rats; D017207:Rats, Sprague-Dawley; D016896:Treatment Outcome
chemical_list: D000970:Antineoplastic Agents; D004365:Drugs, Chinese Herbal; D010936:Plant Extracts; C119642:gosha-jinki-gan; D003520:Cyclophosphamide