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Chlorella accelerates dioxin excretion in rats.

K Morita1, T Matsueda, T Iida

  • 1Fukuoka Institute of Health and Environmental Sciences, Dazaifu City, Fukuoka 818-0135, Japan.

The Journal of Nutrition
|August 25, 1999
PubMed
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Chlorella supplementation significantly increased the fecal excretion of dioxins, including polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs). This suggests Chlorella may help reduce dioxin absorption and promote elimination in the body.

Area of Science:

  • Environmental Toxicology
  • Nutritional Science
  • Pharmacology

Background:

  • Yusho disease is caused by exposure to dioxins.
  • Polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) are persistent organic pollutants.
  • Chlorella is a type of algae with potential health benefits.

Purpose of the Study:

  • To investigate the effect of Chlorella on the fecal excretion of PCDD and PCDF congeners.
  • To evaluate Chlorella's potential in mitigating dioxin toxicity.

Main Methods:

  • Wistar rats were administered rice oil causing Yusho disease.
  • Rats were fed either a control diet or a diet supplemented with 10% Chlorella.
  • Fecal excretion of PCDD and PCDF congeners was measured over two periods (5-day and 28-day).

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Main Results:

  • Chlorella supplementation significantly increased fecal excretion of PCDD and PCDF congeners in rats.
  • Excretion levels were 0.2-11.3 times greater for PCDD and 0.3-12.8 times greater for PCDF in the Chlorella group during the initial 5 days.
  • Increased excretion was also observed in the longer-term study (0.3-3.4 times for PCDD, 0.5-2.5 times for PCDF).

Conclusions:

  • Chlorella administration enhances the fecal excretion of dioxins.
  • Chlorella may be beneficial in preventing gastrointestinal dioxin absorption.
  • Chlorella shows potential for treating dioxin exposure in humans.