• 제목/요약/키워드: Fucoidan

검색결과 149건 처리시간 0.025초

Ecklonia cava Extract Containing Dieckol Suppresses RANKL-Induced Osteoclastogenesis via MAP Kinase/NF-κB Pathway Inhibition and Heme Oxygenase-1 Induction

  • Kim, Seonyoung;Kang, Seok-Seong;Choi, Soo-Im;Kim, Gun-Hee;Imm, Jee-Young
    • Journal of Microbiology and Biotechnology
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    • 제29권1호
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    • pp.11-20
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    • 2019
  • Ecklonia cava, an edible marine brown alga (Laminariaceae), is a rich source of bioactive compounds such as fucoidan and phlorotannins. Ecklonia cava extract (ECE) was prepared using 70% ethanol extraction and ECE contained 67% and 10.6% of total phlorotannins and dieckol, respectively. ECE treatment significantly inhibited receptor activator of nuclear $factor-{\kappa}B$ ligand (RANKL)-induced osteoclast differentiation of RAW 264.7 cells and pit formation in bone resorption assay (p <0.05). Moreover, it suppressed RANKL-induced $NF-{\kappa}B$ and mitogen-activated protein kinase signaling in a dose dependent manner. Downregulated osteoclast-specific gene (tartrate-resistant acid phosphatase, cathepsin K, and matrix metalloproteinase-9) expression and osteoclast proliferative transcriptional factors (nuclear factor of activated T cells-1 and c-fos) confirmed ECE-mediated suppression of osteoclastogenesis. ECE treatment ($100{\mu}g/ml$) increased heme oxygenase-1 expression by 2.5-fold and decreased intercellular reactive oxygen species production during osteoclastogenesis. The effective inhibition of RANKL-stimulated osteoclast differentiation and oxidative stress by ECE suggest that ECE has therapeutic potential in alleviating osteoclast-associated disorders.

Experiential treatment of ankylosing spondylitis using Ortho-Cellular Nutrition Therapy (OCNT)

  • Baek, Kyungsin
    • 셀메드
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    • 제12권3호
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    • pp.14.1-14.2
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    • 2022
  • Currently, a 70-year-old woman started suffering from S.I joint pain from 1973 and had severe pain in the S.I joint, wrist, and elbow from 1975 to 1977, and was diagnosed with spinal tuberculosis at a general hospital. From 1978 to 1987, she suffered from chronic fatigue and insomnia, and since January 1, 1988, she was unable to get up while lying down, suffering from whole body joint, muscle pain, and fibromyalgia. In May 1989, she was also diagnosed with ankylosing spondylitis through genetic testing at the Catholic St. Mary's Hospital Rheumatology Department in Korea, and was treated with sulfasalazine, analgesic, and immunosuppressant, methotrexate, for 12 years until 1999, but none of the drugs eliminated the pain. She was hospitalized and discharged repeatedly, and continued to receive salt water poultice and exercise therapy at home, but was unable to move at all. In 2000, after biologic treatment with Remicade injection (Remsima®), she was able to walk and move, and after that, she was continuously prescribed biologics. From 2015 to 2019, Enbrel® (Etanercept) injection was prescribed once a week, but the symptoms such as severe pain (joint and muscle, fibromyalgia), scleroderma, Sjogren's syndrome (dryness of eyes, nose and mouth), difficulty swallowing, chronic fatigue, and stiff body appeared. Around January 2018, hepatic indicators were high and lymphocytes became enlarged. However, most serious injuries were highly improved after the OCNT combination therapy using active phytonutrients, anthocyanin-fucoidan nanocomplex. Therefore, for patients with such experiences, OCNT treatment is proposed as an alternative.

생체외 모델에서 아우레오바지디움 유래 베타 글루칸이 피부창상 치유에 미치는 영향 (Effect of ${\beta}$-glucan Originated from Aureobasidium on the Dermal Wound Repair in Vitro Model)

  • 이정우;권영삼;장광호
    • 한국임상수의학회지
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    • 제30권6호
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    • pp.403-408
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    • 2013
  • 본 연구의 목적은 in vitro 실험에서 human dermal fibroblast cell을 이용한 섬유아세포 증식과 콜라겐 생성을 통한 전층피부창상치유에 대한 효과를 알아보는 것이다. In vitro 실험에서, 베타글루칸 및 양성대조물질 oncostatin M을 사용하여 처치 후 24 또는 48시간 이후 MTT assay와 세포수 관찰을 통해 섬유모세포 증식효과에 대해 평가하였다. Procollagen 생산에 대한 효과를 평가하기 위해 베타글루칸 및 양성대조물질 oncostatin M 처치 48시간 후 hydroxyproline을 HPLC를 이용하여 정량하여 평가하였다. 창상재구축에 대한 효과를 평가하기 위해 베타글루칸 및 양성대조물질 fucoidan fraction 7을 FPCL 모델을 이용하여 평가하였다. 베타글루칸 처치군은 음성대조군 대비 0.1 mg/ml 이상의 농도에서 용량의존적이고 유의적인 OD 또는 섬유아세포수의 증가가 관찰되었다. 게다가 베타글루칸 처치군은 창상면으로 유주된 세포수가 음성대조군 대비 1 mg/ml 이상의 농도에서 용량의존적이고 유의적인 증가가 관찰되었다. 그러나 베타글루칸 처치군은 음성대조군 대비 모든 용량에서 procollagen 생산에 대한 유의적인 변화가 관찰되지 않았다.

방사선을 조사한 마우스에서 비장세포에 대한 톳의 보호 작용 (Protective effect of Hizikia fusiforme on radiation-induced damage in splenocytes)

  • 김아름;빙소진;조진희;안긴내;이지혁;전유진;이병걸;지영흔
    • 대한수의학회지
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    • 제55권1호
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    • pp.21-30
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    • 2015
  • The immune system is specifically sensitive to oxidative stress induced by ionizing radiation because of its rapid proliferative activity. For this reason, an instructive immune system is one of the best ways to minimize side effects, such immunodeficiency, of gamma radiation. Over the past few decades, several natural plants with antioxidant and immunomodulatory properties have been identified as adjuncts for nontoxic and successful radiotherapy. Hizikia fusiforme extract (HFE) containing plentiful dietary fiber and fucoidan is known for its instructive antioxidant capacity, immunomodulation abilities, and immune activation. In this study, we determined whether HFE protects radiosensitive immune cells from gamma radiation-induced damage. C57BL/6 mice were irradiated with gamma-ray. The effect of HFE on the ionizing radiation damage of immune cells was then evaluated with an MTT assay, 3H-thymidine incorporation assay, and PI staining. We found that HFE stimulated the proliferation of gamma-ray irradiated immune cells without cytotoxic effects. We also observed that HFE not only decreased DNA damage but also reduced gamma radiation-induced apoptosis of the immune cells. Our results suggest that HFE can protect immune cells from gamma-ray damage and may serve as an effective, non-toxic radioprotective agent.

해조류 유래 다당류와 장 건강 (Seaweed Derived Oligosaccharides and its Health Beneficial Effects on Gut Health)

  • 양효선;이윤경
    • 한국콘텐츠학회논문지
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    • 제16권7호
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    • pp.465-475
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    • 2016
  • 전 세계적으로 염증성 장질환의 발병률이 지속적인 증가추세를 보이는 가운데, 그 원인과 기전에 대한 적극적인 연구가 진행되고 있음에도 불구하고 아직 뚜렷한 치료제의 개발은 미비한 실정이다. 염증성 장질환의 원인에는 유전적, 후생유전적, 환경적 요인 외에도 숙주의 면역상태 등이 복합적으로 영향을 미치는 것으로 보고되어 있으며 특히 환경적인 요인 중 식이는 장 건강에 큰 영향을 미친다. 인간의 소화 작용에 의해 분해되지 않고 장까지 도달하는 난소화성 식이 섬유소는 장내 미생물의 먹이로 사용되고 선택적으로 바람직한 장내 미생물인 프로바이오틱스(probiotics)의 성장에 영향을 주는 프리바이오틱스(prebiotics)의 기능을 수행함으로써 장 건강에 긍정적인 영향을 준다고 알려져 있다. 최근 풍부한 식이 섬유소롤 함유하고 있는 해조류 유래 다당류의 프리바이오틱스로의 기능이 대두되면서 장 건강 증진을 위한 기능성 물질로써의 역할과 그 기전 연구가 활발히 진행되고 있다. 본 총설에서는 해조류 유래 다당류, 주로 후코이단과 라미나린 등이 장 건강과 장내 미생물의 성장에 미치는 영향 및 염증성 장질환의 재발과 치료를 위한 잠재적인 기능성 원료로써 가능성을 in vitro와 in vivo 실험 결과를 바탕으로 논의해 보도록 하겠다.

Marine Algae and Their Potential Application as Antimicrobial Agents

  • Charway, Grace N.A.;Yenumula, Padmini;Kim, Young-Mog
    • 한국식품위생안전성학회지
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    • 제33권3호
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    • pp.151-156
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    • 2018
  • 해양생물에는 육상생물자원에서는 존재하지 않는 다양한 화합물이 많이 존재하는데 이들 화합물은 새로운 치료제 및 대체 치료법을 개발하는데 유용하게 이용될 수 있다. 현재 해조류의 다양한 생리활성에 대한 연구가 진행되고 있으며 최근에는 여러 병원성 및 인체 감염균에 대한 항균효과를 나타내어 신약개발의 보고로 다양한 연구가 진행이 되고있다. 즉, 해조류는 천연물신약 또는 새로운 치료제 개발에 중요한 생물자원이다.

Antimicrobial Properties and Cytotoxicity of Sulfated (1,3)-β-D-Glucan from the Mycelium of the Mushroom Ganoderma lucidum

  • Wan-Mohtar, Wan Abd Al Qadr Imad;Young, Louise;Abbott, Grainne M.;Clements, Carol;Harvey, Linda M.;McNeil, Brian
    • Journal of Microbiology and Biotechnology
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    • 제26권6호
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    • pp.999-1010
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    • 2016
  • Ganoderma lucidum BCCM 31549 has a long established role for its therapeutic activities. In this context, much interest has focused on the possible functions of the (1,3)-β-D-glucan (G) produced by these cultures in a stirred-tank bioreactor and extracted from their underutilized mycelium. In the existing study, we report on the systematic production of G, and its sulfated derivative (GS). The aim of this study was to investigate G and its GS from G. lucidum in terms of their antibacterial properties and cytotoxicity spectrum against human prostate cells (PN2TA) and human caucasian histiocytic lymphoma cells (U937). 1H NMR for both G and GS compounds showed β-glycosidic linkages and structural similarities when compared with two standards (laminarin and fucoidan). The existence of characteristic absorptions at 1,170 and 867 cm-1 in the FTIR (Fourier Transform Infrared Spectroscopy) for GS demonstrated the successful sulfation of G. Only GS exhibited antimicrobial activity against a varied range of test bacteria of relevance to foodstuffs and human health. Moreover, both G and GS did not show any cytotoxic effects on PN2TA cells, thus helping demonstrate the safety of these polymers. Moreover, GS showed 40% antiproliferation against cancerous U937 cells at the low concentration (60 μg/ ml) applied in this study compared with G (10%). Together, this demonstrates that sulfation clearly improved the solubility and therapeutic activities of G. The water-soluble GS demonstrates the potential multifunctional effects of these materials in foodstuffs.

FTIR characterization and antioxidant activity of water soluble crude polysaccharides of Sri Lankan marine algae

  • Fernando, I.P. Shanura;Sanjeewa, K.K. Asanka;Samarakoon, Kalpa W.;Lee, Won Woo;Kim, Hyun-Soo;Kim, Eun-A;Gunasekara, U.K.D.S.S.;Abeytunga, D.T.U.;Nanayakkara, Chandrika;de Silva, E.D.;Lee, Hyi-Seung;Jeon, You-Jin
    • ALGAE
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    • 제32권1호
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    • pp.75-86
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    • 2017
  • Polysaccharides of marine algae exhibit different structural characteristics and interesting biological functions. In this study, crude polysaccharides (CP) of eleven Sri Lankan marine algae obtained through hot water extraction and ethanol precipitation were investigated for DPPH, alkyl, and hydroxyl radical scavenging activities using electron spin resonance spectrometry and for intracellular reactive oxygen species scavenging activity in the Chang liver cell line. Characterization of CPs was done by Fourier transform infrared (FTIR) spectroscopy and by analysis of the monosaccharide composition. Time-dependent density functional theory quantum-chemical calculations at the RB3LYP/6-31G(d,p) level for constructed dimeric units of the corresponding polysaccharides were used to resolve the FTIR spectra. CPs from Chnoospora minima showed the highest DPPH and alkyl radical scavenging activities and higher intracellular reactive oxygen species scavenging effects for both AAPH and $H_2O_2$ induced ROS production in "Chang" cells. The major polysaccharide constituent in C. minima CP was identified as fucoidan and it displayed a higher sulfate content. The degree of sulfation of these polysaccharides suggests a positive correlation with the observed antioxidant properties.

미역 발효추출물의 HCT-15 대장암 세포 사멸 유도 효과 (Apoptosis Induction of HCT-15 Cells by Extracts of Undaria pinnatifida with Fermented Micro-organism)

  • 김태윤;한효상;이영종
    • 대한본초학회지
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    • 제28권4호
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    • pp.33-40
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    • 2013
  • Objectives : To study the apoptosis effects of fermented Undaria pinnatifida extracts(FUP) against HCT-15 colon cancer cells. Method : By measuring cell proliferation, DNA fragmentation, cell cycle, morphology, and western blot from FUP, the study investigated the effects of the extractions had upon the HCT-15 colon cancer cells, and concluded that the inhibiting effects upon cells were induced by apoptosis. Result : FUP effectively inhibited the growth of HCT-15 colon cancer cells. After analyzing the DNA fragmentation, the study observed a DNA ladder, while examining the cells, and found an increase of sub-G1 hypodiploid cells. On the changes regarding the nucleus of the cells, a condensation of cells and chromatin, as well as an apoptotic body was clearly observed. By observing through western blot from FUP, the study found a decreased level of Bcl-2 from HCT-15 colon cancer cells, but the increased level of Bax and cleaved caspase-3, which as a result induced apoptosis, inhibiting the growth of HCT-15 colon cancer cells. FUP increased the natural death of HCT-15 colon cancer cells by the induction of apoptosis. FUP seemed to have no suppressing effect upon HL-60/MX2 cells. However, compared to the fucoidan, the study was able to clearly observe morphological changes of HCT-15 cells apoptosis, in a 1/2 concentration. Conclusion : FUP had antiproliferative effects on different kinds of cancer cells, while proving especially efficacious against colon cancer cells.

해조류 가공식품 및 부산물을 이용한 제품 개발 (Development of Value-Added Products Using Seaweeds)

  • 박양균;강성국;정순택;김동환;김선재;박재인;김창혁;임종환;김정목
    • 한국해양바이오학회지
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    • 제2권3호
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    • pp.133-141
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    • 2007
  • 국내 해조류 자원의 이용성 증대를 위해서 해조류의 기능성, 유산균 생육 특성, 가공식품에의 이용, 생분해성 포장재의 소재, 그리고 부산물을 이용한 동물사료화 및 퇴비화 가능성의 연구 보문을 조사하였다. 기능성물질 연구에서는 유용색소 (Fucoxanthin)의 추출과 부위별 함량 및 분광학적인 특성이 있으며, 해조류로부터 alginate의 함량 조사와 최적추출조건 확립에 대한 연구를 수행하여 AASA (Acid alkali soluble alginate) 추출방법에서 3% $Na_2CO_3$ 농도와, $H_2SO_4$의 농도 0.4 N에서 가장 높은 수율을 얻었다. 톳으로부터 산알칼리 (AASA) 방법으로 추출한 알긴산에 인위적으로 sulfate를 흡착 Lactobacillus acidophilus를 접종한 후 배양하면서 유산균의 성장에 대한 영향을 살펴 본 결과 모든 농도에서 이들 배지에 S-alginate를 첨가한 것이 유산균의 성장을 증가시켰다. 미역귀 추출물로 잼을 제조하였고, 김, 미역, 다시마의 물 추출물로 물성이 우수하고 관능성적도 양호한 젤리를 제조하였다. 해조류 젤리를 상품화하는데 있어서 해조류가 갖는 해조취와 젤리색소의 안정화가 상품화의 요소로 대두되어 이를 개선할 방법도 제시되었다. 해조 간장과 된장 및 두부에서는 다당류나 무기질 등 영양적인 기능성과 관능적 기호성을 향상시킬 수 있었다. 알긴산 필름의 물성 증진을 위하여 $CaCl_2$를 필름용액에 직접 첨가 또는 필름을 $CaCl_2$용액에 침지하는 두 가지 방법에서 수분 저항성이 강한 필름을 제조할 수 있었다. 미이용 해조분말이나 해조가공 부산물로 얻어지는 해조분말을 이용하여 새로운 생분해성 포장소재로 사용할 수 있는 가능성이 있다. 해조류의 영양성분 및 아미노산 함량을 분석한 결과 사료첨가제로서 충분한 가치가 있었으나 다량의 염분 함량으로 인하여 그 가치가 평가 절하되었다. 따라서 해조류의 사료적 가치를 증진시키기 위하여 발효처리를 하였으며, 그 결과 기능성 영양소 (불포화 지방산)가 증가되는 효과가 있었다.

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