Inhibition of Matrix Metalloproteinases-12 (MMP-12) and Anti-oxidant Effect of Xanthohumol from Hop (Humulus lupulus L.)

  • Received : 2012.11.10
  • Accepted : 2012.12.09
  • Published : 2012.12.31

Abstract

Xanthohumol was isolated from hops (Humulus lupulus L.), and then investigated anti-oxidant effect by AAPH-induced LLC-PK1 cell and oxygen radical absorbance capacity (ORCA) assays and MMP-12 inhibitory effect by direct MMP-12 inhibition assay. The treatment of xanthohumol protected LLC-PK1 cells from AAPH-induced cell damage such as cell viability, SOD and GSH-px reduction in a dose dependant manner (0.1, 1, and $5{\mu}M$), the SOD value was 2.98, 4.51, and 5.77 U/mg protein, and GSH-px value was 30.12, 49.32, and 60.11 U/mg protein. ORAC value of xanthohumol was showed as 4320, 12004, and $14209{\mu}M$ TE/g at the concentration 0.1, 1, and $5{\mu}M$, respectively. The change of SOD and GSH-px values was significantly correlated with the results of ORAC assay, that is, AAPH-induced cell and ORCA assays. In addition, inhibition of MMP-12 that is known to play an important role in skin aging was 14%, 37%, 46%, and 79% at the concentration of 0.01, 0.1, 1, and $5{\mu}M$, respectively. On the basis of these results, xanthohumol from hops (Humulus lupulus L.) showed interesting biological and pharmacological activity such as anti-oxidant effect and anti-aging.

Acknowledgement

Supported by : Seoil University

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