• Title, Summary, Keyword: anti-oxidant

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Alteration of hepatic anti-oxidant systems by 4-nonylphenol, a metabolite of alkylphenol polyethoxylate detergents, in Far Eastern catfish Silurus asotus

  • Park, Kwan Ha
    • Environmental Analysis Health and Toxicology
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    • v.30
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    • pp.6.1-6.7
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    • 2015
  • Objectives This study aimed to estimate the effects of 4-nonylphenol (NP), a ubiquitously present surfactant in aquatic environments, on the anti-oxidant systems of the liver in the Far Eastern catfish Silurus asotus. Methods Changes in biochemical parameters involved in glutathione (GSH)-related and other anti-oxidant systems were analyzed following 4 weeks of 4-NP administration (0.1 and 1.0 mg/kg diet) via a formulated diet to catfish. Results 4-NP exposure induced an elevation in hepatic lipid peroxide levels and an accompanying decrease in reduced state GSH after 2 weeks, suggesting pro-oxidant effects of the chemical in catfish. This oxidative stress was associated with an inhibition of the GSH-utilizing enzyme glutathione peroxidase at the same time point. This inhibition was restored after 4 weeks. The activities of other anti-oxidant enzymes, i.e., glutathione reductase, superoxide dismutase and catalase were increased after 4 weeks. These enzyme increases occurred more strongly at the higher 4-NP concentration (1.0 mg/kg diet). Conclusions 4-NP given to catfish at 0.1 to 1.0 mg/kg diet, concentrations relevant to environmental levels, depletes the endogenous anti-oxidant molecule GSH and temporarily inhibits GSH-related anti-oxidant enzymes. Such declines in anti-oxidant capacity and elevated oxidative stress seem to be compensated eventually by subsequent activation of various anti-oxidant enzyme systems.

Vitamin C Is an Essential Factor on the Anti-viral Immune Responses through the Production of Interferon-${\alpha}/{\beta}$ at the Initial Stage of Influenza A Virus (H3N2) Infection

  • Kim, Yejin;Kim, Hyemin;Bae, Seyeon;Choi, Jiwon;Lim, Sun Young;Lee, Naeun;Kong, Joo Myung;Hwang, Young-Il;Kang, Jae Seung;Lee, Wang Jae
    • IMMUNE NETWORK
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    • v.13 no.2
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    • pp.70-74
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    • 2013
  • L-ascorbic acid (vitamin C) is one of the well-known antiviral agents, especially to influenza virus. Since the in vivo antiviral effect is still controversial, we investigated whether vitamin C could regulate influenza virus infection in vivo by using Gulo (-/-) mice, which cannot synthesize vitamin C like humans. First, we found that vitamin C-insufficient Gulo (-/-) mice expired within 1 week after intranasal inoculation of influenza virus (H3N2/Hongkong). Viral titers in the lung of vitamin C-insufficient Gulo (-/-) mice were definitely increased but production of anti-viral cytokine, interferon (IFN)-${\alpha}/{\beta}$, was decreased. On the contrary, the infiltration of inflammatory cells into the lung and production of pro-inflammatory cytokines, tumor necrosis factor (TNF)-${\alpha}$ and interleukin (IL)-${\alpha}/{\beta}$, were increased in the lung. Taken together, vitamin C shows in vivo antiviral immune responses at the early time of infection, especially against influenza virus, through increased production of IFN-${\alpha}/{\beta}$.

Comparison of anti-oxidant activities of seventy herbs that have been used in Korean traditional medicine

  • Ko, Seong-Hee;Choi, Seong-Won;Ye, Sang-Kyu;Yoo, Sang-Ho;Kim, Hyun-Sook;Chung, Myung-Hee
    • Nutrition Research and Practice
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    • v.2 no.3
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    • pp.143-151
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    • 2008
  • Many herbs have been used as therapeutics in Korean traditional medicine. In view of their clinical indications, anti-oxidant activity may contribute to their pharmacological effects. However, anti-oxidant information on these plants has not been available. In this study, seventy herbs which have been used in Korean traditional medicine were selected and screened for anti-oxidant activity using their water extracts. The anti-oxidant activity was assessed by their ability to inhibit three oxidation reactions; luminol/Fenton reagent, 2, 7-dichlorodihydrofluorescein(DCHF)/Fenton reagent and DCHF/peroxynitrite. In each assay, 70 herbs were divided into two groups; anti-oxidant group which inhibited the respective oxidation reaction and was majority(about 60 herbs), and pro-oxidant group which enhanced the oxidation reaction but was minority(more or less 10 herbs). When the herbs were listed in the order of their anti-oxidant strength, the orders obtained from each assay were found to be quite similar. The upper top rankers(more or less 10 herbs) in each assay showed strong activity compared to the others. The uppermost rankers in each assay were Rubus coreanus Miquel/Rubus schizostylus(覆盆子), Schisandra chinensis Baillon/Schizandra chinensis(五味子) and Terminalia chebula Retziusl Terminalia chebula(訶子). Of the pro-oxidant herbs, about 4-5 herbs were strongly pro-oxidant, which enhanced the control oxidation reactions to 150-300%. But the meaning of this observation is not known since few of them in one assay were also anti-oxidant in other assays. The results obtained in the present study may serve as information for understanding pharmacological effects of these herbs and developing new drugs from them.

A Study on the Anti-microbial Effect on S. mutans and Anti-oxidant Effect of Zanthoxylum pericarpium Extract (산초 추출물의 S. mutans 항균활성 및 항산화 효능 연구)

  • Lee, Sang-Gon;Park, Chan-Ik
    • The Korea Journal of Herbology
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    • v.26 no.4
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    • pp.181-185
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    • 2011
  • Objectives : The Zanthoxylum pericarpium has been used as oriental spicy seasoning and a medicinal plant from old times. This study was performed to determine the anti-oxidant efficacy of Zanthoxylum pericarpium extract and the anti-microbial effects. Methods : We got Zanthoxylum pericarpium extract using PSE (pressurized solvent extraction) method. The anti-microbial effect of Zanthoxylum pericarpium extract was assessed on Streptococcus mutans(S. mutans) and anti-oxidant effect of the extract was assessed by measuring DPPH radical scavenging activity and SOD like activity. Results : 1. Zanthoxylum pericarpium extract had high anti-microbial activity on S. mutans. 2. DPPH radical scavenging activity significantly increased in the Zanthoxylum pericarpium extract. 3. SOD like activity also significantly increased in the Zanthoxylum pericarpium extract. Conclusions : The PSE extract from Zanthoxylum pericarpium has good anti-microbial and anti-oxidant effects in a concentration-dependent manner.

The Comparison of Antioxidant Capacities and Catechin Contents of Korean Commercial Green, Oolong, and Black Teas (국내 시판되는 녹차, 우롱차 및 홍차의 카테킨 함량과 항산화능 비교)

  • Lee, Min-June;Kwon, Dae-Joong;Park, Ok-Jin
    • Journal of the Korean Society of Food Culture
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    • v.22 no.4
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    • pp.449-453
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    • 2007
  • Using green tea(GT), oolong tea(OT), black tea(BT) and green tea bag(GTB) out of tea products in market, this study quantified polyphenol and catechins as anti-oxidant substances and analyzed their respective anti-oxidant capacities. As a result, more epigallocathechin(EGC) was found in GT and GTB as well as caffein(CAF) in GT and BT. GT contained more epigallocathechin gallate(EGCG) than other tea types. Both FRAP and ORAC, as two methods of analyzing anti-oxidant capacities, showed that GTB had highest anti-oxidant capacities, while OT had lowest of all. By brand, it was found that all the 3 brands of GT had similarly high anti-oxidant capacities, but there were differences in the anti-oxidant activities of GTB and BT depending on brand. Out of catechin components, it was found that epicatechin(EC), epicathechin gallate(ECG) and EGCG were major components affecting anti-oxidant capacities.

Anti-inflammatory and Anti-cancer Effects of Agricultural Produce Grown with Organic Germanium-enriched Water (유기 게르마늄 농축수로 재배한 농산물의 항염 및 함암효과)

  • Lee, Myeong-Seon
    • Journal of the Korean Society of Food Culture
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    • v.36 no.1
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    • pp.103-109
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    • 2021
  • The study was conducted to identify the anti-inflammatory and anti-cancer effects in sprouts of mouse-eyed bean (Rhynchosia nulubilis), ginseng (Panax ginseng), perilla (Perilla frutescens), broccoli (Brassica oleracea var. italica), and lettuce (Lactuca sativa) grown with organic germanium concentrate. Western blot analysis was performed to assess the anti-inflammatory activity of the extract. All extracts exhibited noticeable anti-oxidant activity, indicating a significant correlation between the germanium content and anti-oxidant activity (p<0.05). In particular, rat-eyed bean sprouts with the highest germanium content showed significant anti-inflammatory activity (p<0.05) by significantly inhibiting the expression of the inflammatory complexes, NLRP3, cytokines IL-1β and caspase-1. Ginseng and broccoli sprouts showed strong anti-cancer properties and had high anti-oxidant effects (p<0.001). Germanium-concentrated water allows the mass production of agricultural products containing high concentrations of organic germanium. Agricultural produce grown with germanium concentrate add organic germanium to various physiological active ingredients, increasing the anti-oxidant and anti-cancer effects. These results strongly suggest that agricultural products containing high germanium concentrations can be used as novel health supplements to improve health.

Anti-Oxidant Activities of Paeoniflorin Derivatives

  • Kim, Su-Ah;Jang, Eun-Seo;Lee, A-Yeon;Lee, Su-Jeong;Balcos, Marie-Carmel;Kim, June-Hyun
    • Proceedings of the Plant Resources Society of Korea Conference
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    • pp.121-121
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    • 2018
  • We previously showed that the root extract of Paeonia lactiflora Red Charm might have anti-oxidant activities, however it was not clear which components might be involved in this activity. Our boinformatics analysis indicated the root extracts of Paeonia lactiflora Red Charm has a couple of potential anti-oxidant materials. One of them is paeoniflorin. We hypothesized that one of components present in Paeonia lactiflora Red Charm, paeoniflorin and its derivatives might be related to anti-oxidant activity. In this study, we compared paeoniflorin and its derivatives with the root extract of Paeonia lactiflora Red Charm using DPPH assays to measure its antioxidant activities. Paeoniflorin showed the highest radical scavenging activity(%) in $1000{\mu}g/m{\ell}$. its derivative showed the high levels radical scavenging activity(%) in $600{\mu}g/m{\ell}$, $800{\mu}g/m{\ell}$, $1000{\mu}g/m{\ell}$ similar to ascorbic acid. Taken together, these results suggest that Paeoniflorin and its derivatives may play a role in anti-oxidant acitivity in the root extracts of Paeonia lactiflora. Much of future studies may be needed to develop a potential new anti-oxidant candidates with anti-aging and anti-cancer effects.

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Anti-inflammatory and Anti-Oxidant Effects of Oxypaeoniflorin, Paeoniflorin and Paeonia lactiflora cv. 'Red Charm' Flower Petal Extracts in Macrophage Cells

  • Kim, Soo-Ah;Jang, Eun-Seo;Lee, A-Yeon;Lee, Soo-Jung;Kim, June-Hyun
    • Korean Journal of Plant Resources
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    • v.33 no.3
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    • pp.153-162
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    • 2020
  • The root extracts of Paeonia lactiflora cv. 'Red Charm' has been studied by many groups, however, little attention has been paid to its flower petal. Paeonia is the genus in the Paeoniaceae family. 'Red Charm' Paeonia is a soft-stemmed herbaceous peony hybrid of P. officinalis and P. lactiflora. We previously showed the flower petal extract of Red Charm might have anti-oxidant and anti-inflammatory activities, however, it was not clear which components might be involved in this activity. Bioinformatics analysis previously indicated these extracts have potential anti-oxidant materials. One of them is identified as paeoniflorin, which is major component in root extract of Red Charm. In this study, we compared paeoniflorin and oxypaeoniflorin using DPPH assays to measure its anti-oxidant activities. Oxypaeoniflorin showed higher levels of radical scavenging activity, similar to ascorbic acid control, whereas paeoniflorin did not. Furthermore, nitric oxide assay showed they have similar anti-inflammatory effects. Taken together, these results suggest oxypaeoniflorin may play a more important role in the anti-oxidant activity of the flower petal and root extracts of Red Charm, compared to paeoniflorin. Further studies may be able to provide a platform to develop potential dual effects therapeutics for oxidant-mediated and inflammation-mediated disease in the near future.

Cosmeceutical effect from native medicinal plants of blue belt Ulleung islands (청정해역 울릉도자생약초를 이용한 화장품 약리활성 연구)

  • Bae, Hae-Byoung;Kim, Jin-Chul;Lee, Jin-Tae
    • The Korea Journal of Herbology
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    • v.26 no.2
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    • pp.67-73
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    • 2011
  • Objectives : The purpose of this research was total polyphenol contents, anti-oxidant activities, anti-inflammatory activities and anti-wrinkle activities of Ulleung islands plants for application as a cosmeceutical ingredients Methods : We were experimented total polyphenol contents, anti-oxidant activities, anti-inflammatory activity and anti-wrinkle activities. Results : In the physiological activities, most Ulleung islands plants is showed the highest anti-oxidant, anti-inflammatory activity in ABTS+ radical cation scavenging activity, hydrogen peroxide($H_2O_2$) scavenging activity, nitric oxide scavenging activity. All experiment of the water and ethanol extract from the Ulleung islands plants ingredients were gradually increased as well. Conclusions : These results suggest that extracts from Ulleung islands plants can be used in natural ingredient in food or cosmetic industry.

Anti-oxidant and Anti-inflammatory Effects of Rutin and Its Metabolites

  • Kim, Ji Hye;Park, Sang Hee;Beak, Eun Ji;Han, Chang Hee;Kang, Nam Joo
    • Current Research on Agriculture and Life Sciences
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    • v.31 no.3
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    • pp.165-169
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    • 2013
  • Rutin is one of the major flavonoids found in buckwheat (Fagopyrum esculentum Moench). While rutin is already known to exhibit anti-oxidative, anti-inflammatory, and anti-carcinogenic activities. However, the health beneficial function of rutin metabolites is not well understood. In DPPH radical scavenging assays, the present study found that 3,4-dihydroxyphenyl acetic acid had the highest total anti-oxidant activity, followed by 3,4-dihydroxyphenylacetic acid, rutin, homovanillic acid, and 3-hydroxyphenyl acetic acid. Further, 3,4-dihydroxyphenylacetic acid strongly reduced LPS-induced IL-6 production in RAW 264.7 cells, compared with other metabolites. Therefore, these results suggest that rutin metabolites have potential to be utilized as food ingredients with anti-oxidant and anti-inflammatory activities.

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