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Diphlorethohydroxycarmalol Attenuates Methylglyoxal-Induced Oxidative Stress and Advanced Glycation End Product

Seon-Heui Cha1,2,3, Yongha Hwang1,2, Soo-Jin Heo4

  • 1College of Pharmacy, Gachon University, Incheon 21936, Republic of Korea.

Oxidative Medicine and Cellular Longevity
|June 1, 2018
PubMed

Insights

Diphlorethohydroxycarmalol (DPHC), a seaweed polyphenol, protects human kidney cells from damage caused by methylglyoxal. This compound reduces oxidative stress and advanced glycation, offering potential for preventing diabetic nephropathy.

Area of Science:

  • Biochemistry
  • Cell Biology
  • Pharmacology

Background:

  • Diabetic nephropathy is a major cause of end-stage renal disease.
  • Oxidative stress is a key factor in diabetic kidney damage.
  • Methylglyoxal (MGO) is implicated in the pathogenesis of diabetic complications.

Purpose of the Study:

  • To investigate the protective effects of diphlorethohydroxycarmalol (DPHC) against MGO-induced oxidative stress in human embryonic kidney (HEK) cells.
  • To explore the underlying mechanisms of DPHC's protective action.

Main Methods:

  • HEK cells were treated with MGO and/or DPHC.
  • Cytotoxicity and reactive oxygen species (ROS) production were measured.
  • Nrf2 activation, antioxidant enzyme mRNA expression, and glyoxalase-1 mRNA expression were assessed.
  • Advanced glycation end product (AGE) formation was quantified.

Main Results:

  • DPHC significantly inhibited MGO-induced cytotoxicity and ROS production in HEK cells.
  • DPHC treatment activated the Nrf2 transcription factor, increasing antioxidant and detoxification enzyme expression.
  • DPHC attenuated MGO-induced AGE formation by increasing glyoxalase-1 mRNA expression.

Conclusions:

  • DPHC exhibits protective effects against MGO-induced kidney cell damage by mitigating oxidative stress and AGE formation.
  • DPHC demonstrates potential as a therapeutic agent for preventing diabetic nephropathy.

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