title: [The effects of twenty-one traditional Chinese medicines on tyrosinase].
abstract: OBJECTIVE
  To study the effects of 21 kinds of traditional Chinese medicines on tyrosinase.
  
  
  METHODS
  The catalytic reactive velocity of tyrosinase was determined by vision spectrophotometry so as to evaluate the upregulation of traditional Chinese medicines extracts.
  
  
  RESULTS
  21 time-curves of catalytic reaction of tyrosinase were obtained.
  
  
  CONCLUSIONS
  13 kinds of traditional Chinese medicines extracts in vitro showed a upregulation to tyrosinase activity (P < 0.01). Scutellaria baicalensis and Cremastra appendiculata showed a better upregulation to tyrosinase activity.
authors.affiliation: Jinan City Hospital for Skin Diseases Prevention, Jinan 250001, China.
authors.forename: Jun
authors.initials: J
authors.lastname: Yan
authors.forename: Changsheng
authors.initials: C
authors.lastname: Li
authors.forename: Shengli
authors.initials: S
authors.lastname: Chen
authors.forename: Junren
authors.initials: J
authors.lastname: Zhang
authors.forename: Tianen
authors.initials: T
authors.lastname: Zhao
mesh_terms: D002384:Catalysis; D004365:Drugs, Chinese Herbal / Q000145:classification / Q000302:isolation & purification / Q000494:pharmacology*; D004789:Enzyme Activation; D007700:Kinetics; D007980:Levodopa / Q000737:chemistry / Q000378:metabolism; D014442:Monophenol Monooxygenase / Q000737:chemistry / Q000378:metabolism*; D010946:Plants, Medicinal / Q000737:chemistry*; D013053:Spectrophotometry / Q000379:methods; D013997:Time Factors
chemical_list: D004365:Drugs, Chinese Herbal; D007980:Levodopa; D014442:Monophenol Monooxygenase