Английская Википедия:Geraniin

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Шаблон:Chembox Geraniin is a dehydroellagitannin found in geraniums.[1] It is found for instance in Geranium thunbergii, which is one of the most popular folk medicines and also an official antidiarrheic drug in Japan.[2] It can also be found in the rind of Nephelium lappaceum (rambutan).[3]

It mediates apoptosis by cleavage of focal adhesion kinase through up-regulation of Fas ligand expression in human melanoma cells.[1]

Geraniin has also been shown to possess immunomodularity properties, as it inhibits tumor necrosis factor-alpha, and NF-κB in ovarian cancer cells. [4]

Geraniin was studied for its anticancer activity and shown to target apoptosis via inactivation of PI3K/Akt/mTOR signaling pathway involving NF-κB when treated against HT-29 human colorectal adenocarcinoma cells. [5]

It is formed with one hexahydroxydiphenic acid unit, one modified hexahydroxydiphenic acid unit (dehydrohexahydroxydiphenic acid or DHHDP) and one gallic acid unit linked to a glucose molecule. It is forming an equilibrium mixture of six-membered hemi-ketal and five-membered hemi-ketal forms.Шаблон:Citation needed

Chebulagic acid is formed from geraniin through a glutathione-mediated conversion.[6]

References

Шаблон:Reflist

Шаблон:Ellagitannin

  1. 1,0 1,1 Шаблон:Cite journal
  2. Шаблон:Cite journal
  3. Rapid isolation of geraniin from Nephelium lappaceum rind waste and its anti-hyperglycemic activity. Uma D. Palanisamy, Lai Teng Ling, Thamilvaani Manaharan, and David Appleton, Food Chemistry, 1 July 2011, Volume 127, Issue 1, Pages 21–27, Шаблон:Doi
  4. Wang X, et al. Geraniin suppresses ovarian cancer growth through inhibition of NF-κB activation and downregulation of Mcl-1 expression. J Biochem Mol Toxicol. 2017 Sep;31(9)
  5. Шаблон:Cite journal
  6. Glutathione-mediated conversion of the ellagitannin geraniin into chebulagic acid. Tanaka T, Kouno I and Nonaka G.I, Chemical and pharmaceutical bulletin, 1996, volume 44, no 1, pages 34-40, Шаблон:INIST