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AttributesValues
rdf:type
rdfs:label
  • Defined Green Tea Catechin Extract
rdfs:subClassOf
Semantic_Type
  • Pharmacologic Substance
Preferred_Name
  • Defined Green Tea Catechin Extract
UMLS_CUI
  • C0917976
ALT_DEFINITION
  • A substance being studied in the prevention of cancer. It is made from decaffeinated green tea, and contains chemicals called catechins, which are antioxidants.NCI-GLOSS
PDQ_Open_Trial_Search_ID
  • 506041
PDQ_Closed_Trial_Search_ID
  • 506041
Legacy_Concept_Name
  • Polyphenon_E
FULL_SYN
  • Polyphenon EBRNCI
  • Defined Green Tea Catechin ExtractPTNCI
  • Polyphenon EPTNCI-GLOSSCDR0000350240
DEFINITION
  • A defined, decaffeinated green tea extract, containing polyphenolic flavonol catechins, isolated from the plant Camellia sinensis with antiviral, antioxidant, and potential chemopreventive activities. The primary catechins found in green tea are epicatechin (EC), epigallocatechin (EGC), epicatechin-3 gallate (ECG), and epigallocatechin-3-gallate (EGCG), the most potent. As potential chemopreventive agents, catechins scavenge free radicals; inhibit enzymes involved in cell replication and DNA synthesis; interfere with cell-to-cell contact adhesion; and inhibit various intracellular communication pathways required for cell division. In addition, it has been postulated that EGCG may trap growth factors such platelet-derived growth factor (PDGF) on cell membranes, immobilizing growth factors on cell membranes and preventing ligand-receptor crosslinking and growth factor receptor activation.NCI
code
  • C38689
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