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Aqueous kava extracts do not affect liver function tests in rats.

Yadhu N Singh1, Ashwini K Devkota

  • 1College of Pharmacy, South Dakota State University, Brookings, SD, USA. Yadhu_Singh@sdstate.edu

Planta Medica
|July 17, 2003
PubMed
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Kava (Piper methysticum) consumption did not harm rat liver function. Studies showed no increase in liver enzymes or lipid peroxidation, suggesting kava is not hepatotoxic.

Area of Science:

  • Pharmacology
  • Hepatology
  • Ethnobotany

Background:

  • Kava (Piper methysticum) is a traditional plant used for its psychoactive properties.
  • Concerns exist regarding kava's potential hepatotoxicity.
  • Understanding kava's effects on liver function is crucial for its safe use.

Purpose of the Study:

  • To investigate the potential hepatotoxic effects of kava aqueous infusion in a rat model.
  • To assess the impact of kava on key liver function enzymes and lipid peroxidation.

Main Methods:

  • Rats were administered kava extracts at 200 or 500 mg/kg of kavalactones daily for two or four weeks.
  • Serum liver enzymes (ALT, AST, ALP, LDH) and liver homogenate malondialdehyde were measured.
  • Statistical analysis was performed to determine significant changes.

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Main Results:

  • No significant elevation in serum liver enzymes (ALT, AST, ALP, LDH) was observed.
  • Malondialdehyde levels in liver homogenates did not increase, indicating no enhanced lipid peroxidation.
  • Some enzyme levels were significantly reduced, suggesting a potential protective effect.

Conclusions:

  • Kava aqueous infusion, at the tested dosages and durations, did not demonstrate hepatotoxicity in rats.
  • The findings suggest kava may not pose a significant risk to liver function.
  • Further research into kava's potential hepatoprotective mechanisms is warranted.