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Fermented sea tangle attenuates oxidative stress in individuals with a high level of γ-glutamyltransferase: A randomized, double-blind, and placebo-controlled clinical study

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Abstract

A randomized, double-blind, placebo-controlled study of fermented sea tangle (FST) was conducted using 48 healthy volunteers with high levels of γ-glutamyltransferase (GGT). Participants (n=48) were divided into a placebo group and a FST group, which consumed FST (1.5 g/day) for 4 weeks. Serum GGT, aspartate aminotransferase (AST), alanine aminotransferase (ALT), and lactate dehydrogenase (LDH) levels were determined. Plasma 8-isoprostane, 8-hydroxydeoxyguanosine (8-OHdG), and protein carbonyl contents, which indicate lipid peroxidation, DNA damage, and oxidation of protein, were determined. Decreased serum GGT was found in FST consumption group, compared to the placebo group [mean values (IU/L): 78.71±19.14 and 116.75±38.55, respectively, p<0.001]. Administration of FST significantly (p<0.05) decreased levels of serum AST [mean values (IU/L): 31.08±7.25 and 26.79±6.53 respectively, p<0.001] and ALT [mean values (IU/L): 42.63±18.99 and 31.83±14.21, respectively, p=0.001], compared to the placebo group, and significantly (p<0.05) decreased concentrations of plasma 8-isoprostane, 8-OHdG, and protein carbonyl levels.

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Authors and Affiliations

  1. Marine Bioprocess Co., Ltd., Busan, 619-912, Korea

    Young Mi Kang & Bae-Jin Lee

  2. Department of Parasitology, Dong-A University college of Medicine, Busan, 602-714, Korea

    Jung Il Kim

  3. Test and Certification Team, Marine Bio-industry Development Center, Busan Techno-Park, Busan, 619-912, Korea

    Byung-Hyouk Nam

  4. Technical Research Institute, Daesun Distilling Co., Ltd., Busan, 619-934, Korea

    Jae-Young Cha

  5. Department of Food Science and Technology, Pukyong National University, Busan, 608-737, Korea

    Young-Mog Kim

  6. RIS Center, IACF, Silla University, Busan, 617-736, Korea

    Jae-Suk Choi & In Soon Choi

  7. Department of Biological Science, Silla University, Busan, 617-736, Korea

    In Soon Choi

  8. Department of Marine Bio-Food Sciences, Chonnam National University, Jeonnam, 550-749, Korea

    Jae-Young Je

Authors
  1. Young Mi Kang
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  2. Bae-Jin Lee
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  9. Jae-Young Je
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Correspondence to Jae-Young Je.

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Kang, Y.M., Lee, BJ., Kim, J.I. et al. Fermented sea tangle attenuates oxidative stress in individuals with a high level of γ-glutamyltransferase: A randomized, double-blind, and placebo-controlled clinical study. Food Sci Biotechnol 23, 937–941 (2014). https://doi.org/10.1007/s10068-014-0126-0

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  • DOI: https://doi.org/10.1007/s10068-014-0126-0

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