• 제목/요약/키워드: glycosaminoglycan

검색결과 110건 처리시간 0.024초

Pharmacological Activities of a New Glycosaminoglycan, Acharan Sulfate Isolated from the Giant African Snail Achatina fulica

  • Shim, Jin-Young;Lee, Yeon-Sil;Jung, Sang-Hoon;Choi, Hyung-Seok;Shin, Kuk-Hyun;Kim, Yeong-Shik
    • Archives of Pharmacal Research
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    • 제25권6호
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    • pp.889-894
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    • 2002
  • Acharan sulfate (AS) is a glycosaminoglycan (GAG) prepared from the giant African snail, Achatina fulica. In this study, some biological activities of AS were evaluated on the basis of structural similarities to heparin/heparan sulfate and the biological functions of GAGs. We demonstrated that it exhibited strong immunostimulating activities as measured by carbon clearance test in mice and in vivo phagocytosis. It also exhibited a significant hypoglycemic activity in epinephrine (EP)-induced hyperglycemia as well as antifatigue effects by weight-loaded forced swimming test. And it showed hypolipidemic activities in cholesterol-rich mixture induced hyperlipidemia in rats. The above results indicate that AS has diverse biological activities and suggest therapeutically important target molecules.

Antibody derived from insect glycosaminoglycan

  • Ahn, Mi Young;Hwang, Jae Sam;Yoon, Hyung Joo;Yun, Eun Young
    • International Journal of Industrial Entomology and Biomaterials
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    • 제29권2호
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    • pp.214-219
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    • 2014
  • We prepared antibodies from insect glycosaminoglycans (GAGs) and assayed the titer. Nine polyclonal antibodies against insect GAGs were raised for development of an ELISA in biological fluids (mice serum). The 3th booster collection of antiserum of BALB/c mice as a primarily antibody was assayed for titer determination by ELISA method. In sandwich ELISA of GAGs derived from Isaria sinclairii or other insects, antiserum from insect GAGs gave satisfactory results for so potent antibody(100: 1~1000:1) raising (manufacturing) agent in range of 10 ng/ml.

Anti-inflammatory Effect of Isaria sinclairii Glycosaminoglycan in an Adjuvant-treated Arthritis Rat Model

  • Ahn, Mi Young;Jee, Sang Duck;Hwang, Jae Sam;Yun, Eun Young;Ahn, Kwang Seok;Kim, Yeong Shik
    • Toxicological Research
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    • 제29권3호
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    • pp.195-201
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    • 2013
  • The anti-inflammatory effects of glycosaminoglycan (GAG) derived from Isaria sinclairii (IS) and of IS extracts were investigated in a complete Freund's adjuvant (CFA)-treated chronic arthritis rat model. Groups of rats were treated orally with 30 mg/kg one of the following: [1] saline control, extracts of [2] water-IS, [3] methanol-IS, [4] butanol-IS, [5] ethyl acetate-IS, or [6] Indomethacin(R) as the positive control for a period of two weeks. The anti-paw edema effects of the individual extracts were in the following order: water-IS ex. > methanol ex. > butanol ex. > ethyl acetate ex. The water/methanol extract from I. sinclairii remarkably inhibited UV-mediated upregulation of NF-${\kappa}B$ activity in transfected HaCaT cells. GAG as a water-soluble alcohol precipitated fraction also produced a noticeable anti-edema effect. This GAG also inhibited the pro-inflammatory cytokine levels of prostaglandin $E_2$-stimulated lipopolysaccharide in LAW 264.7 cells, cytokine TNF-${\alpha}$ production in splenocytes, and atherogenesis cytokine levels of vascular endothelial growth factor (VEGF) production in HUVEC cells in a dose-dependent manner. In the histological analysis, the LV dorsal root ganglion, including the articular cartilage, and linked to the paw-treated IS GAG, was repaired against CFA-induced cartilage destruction. Combined treatment with Indomethacin(R) (5 mg/kg) and IS GAG (10 mg/kg) also more effectively inhibited CFA-induced paw edema at 3 hr, 24 hr, and 48 hr to levels comparable to the anti-inflammatory drug, indomethacin. Thus, the IS GAG described here holds great promise as an anti-inflammatory drug in the future.

참당귀 추출분말이 Monosodium Iodoacetate로 유발된 흰쥐의 골관절염에 대한 효과 (Effect of Angelica gigas extract powder on progress of osteoarthritis induced by monosodium iodoacetate in rats)

  • 권진환;한민석;이부민;이용문
    • 분석과학
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    • 제28권1호
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    • pp.72-77
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    • 2015
  • 참당귀 추출물의 골관절염에 대한 억제 또는 치료효과를 알고자 monosodium iodoacetate로 유발한 흰쥐의 골관절염 모델을 사용하여 30마리 6주령 SD흰쥐를 정상군(normal), 비처리군(untreated) 및 참당귀 처리군(treated)으로 각각 10마리씩 나누어 실험하였다. 실험기간 동안 실험 개시일부터 4일 간격으로 체중 변화를 측정하였다. 3주간 참당귀 추출물 처리 후 관절연골 내의 glycosaminoglycan (GAG)의 함량 및 proteoglycan (PG) 함량을 측정 비교하였다. 그 결과, 참당귀 추출물은 MIA로 증가한 GAG를 완화시켰으며, PG의 함량을 회복시켰다. 또한, 활액에서의 TNF-a함량은 미약하게 감소하였다. 한편, 경골 관절연골을 분리하여 Safranin-O 염색으로 관절연골 상태를 확인한 결과, MIA 처리로 유발된 관절연골 소실을 억제하였다. 이 참당귀 추출물을 HPLC로 분석한 결과, 주요 성분인 decursin 및 decursinol angelate의 총 함량은 $10.5{\pm}0.2%$이었다.

Glycosaminoglycan Degradation-Inhibitory Lactic Acid Bacteria Ameliorate 2,4,6-Trinitrobenzenesulfonic Acid-Induced Colitis in Mice

  • Lee, Bo-Mi;Lee, Jung-Hee;Lee, Hye-Sung;Bae, Eun-Ah;Huh, Chul-Sung;Ahn, Young-Tae;Kim, Dong-Hyun
    • Journal of Microbiology and Biotechnology
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    • 제19권6호
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    • pp.616-621
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    • 2009
  • To evaluate the effects of lactic acid bacteria (LAB) in inflammatory bowel diseases (IBD), we measured the inhibitory effect of several LAB isolated from intestinal microflora and commercial probiotics against the glycosaminoglycan (GAG) degradation by intestinal bacteria. Bifidobacterium longum HY8004 and Lactobacillus plantarum AK8-4 exhibited the most potent inhibition. These LAB inhibited colon shortening and myeloperoxidase production in 2,4,6-trinitrobenzenesulfonic acid (TNBS)-induced experimental colitic mice. These LAB also blocked the expression of the proinflammatory cytokines, IL-$1{\beta}$ and TNF-$\alpha$, as well as of COX-2, in the colon. LAB also blocked activation of the transcription factor, NF-${\kappa}B$, and expression of TLR-4 induced by TNBS. In addition, LAB reduced the TNBS-induced bacterial degradation activities of chondroitin sulfate and hyaluronic acid. These findings suggest that GAG degradation-inhibitory LAB may improve colitis by inhibiting inflammatory cytokine expression via TLR-4-linked NF-${\kappa}B$ activation and by inhibiting intestinal bacterial GAG degradation.

실험적 치아이동시 glycosaminoglycan의 발현에 관한 연구 (A Study on the Expression of Glycosaminoglycans in the Experimental Tooth Movement of Rat and in Cultured Periodontal Ligament Cells)

  • 이경환;이종진;강경화;김은철;김상철
    • 대한치과교정학회지
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    • 제31권4호
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    • pp.447-458
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    • 2001
  • 치아이동시 골대사에 있어 glycosaminoglycan의 역할에 대해 알아보고자 glycosaminoglycan의 주요 구성 성분인 chondroitin 4-sulfate(CH-4S)의 치주조직 내에서의 면역반응 정도 및 분포 양상을 백서 치아의 실험적 이동 과정에서 면역조직화학적으로 관찰하였다. 또한 사람 치주인대세포를 배양하여 여러 종류의 cytokine을 투여한 후 CH-4S의 발현 양상의 변화를 Western blot analysis를 통해 확인하여 다음과 같은 결과를 얻었다. 1. 치아이동에 반응하는 치수, 치주인대, 골모세포, 파골세포, 골세포 부위에서의 CH-4S 발현이 대조군보다 많았으나 상아질, 백악질에서의 CH-4S의 발현은 견인력 적용 기간에 관계없이 대조군과 큰 차이가 없었다. 2. 치수에서 CH-4S의 발현은 교정력을 가한 1일째에 크게 증가하였다가 7일째부터 감소되었으며 14일째에는 대조군과 차이가 없었다. 3. 치주인대에서 CH-4S의 발현은 주로 치조골 면을 따라 견인측에서 나타났는데 교정력을 가한 1일째에 가장 많은 발현을 보인 후 4일째부터 감소하기 시작하였다. 4. 골모세포와 파골세포 및 골세포에서 CH-4S의 발현은 4일째에 가장 많은 발현을 보였고 7일째 이후에는 크게 감소하였다. 3. 치주인대세포에 PDGF-BB를 투여한 경우 3일째에 가장 많은 CH-4S의 발현을 보였다. 6. 치주인대세포에 $TNF-\alpha$ 처리 시 배양 1일째에 CH-4S의 발현 감소를 보였다. 7. 치주인대세포에 PDGF-BB와 $TGF-\beta$를 혼합 투여 한 경우가 PDGF-BB 및 $TGF-\beta$를 단독 투여한 경우 보다 배양3일째에 CH-4S의 발현이 많았고 LPS나 $TNF-\alpha$ 투여군은 유사한 발현 감소를 보였다. 이상과 같이 교정적 치아이동시 시기 및 부위에 따라 glycosaminoglycan의 발현이 차이를 보이며, 치주인대세포에서도 cytokine의 자극에 따라 glycosaminoglycan의 발현이 변화하는 것으로 보아, glycosaminoglycan이 골대사에 있어 중요한 조절 인자로서의 역할을 하는 것으로 여겨진다.

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Change of Glycosaminoglycan Distribution and Collagen Fibers Arrangement on Temporomandibular Joint Following Anterior Disc Displacement of the Rabbits

  • Kim, Uk-Kyu;Chung, In-Kyo;Kim, Kyu-Cheon
    • Maxillofacial Plastic and Reconstructive Surgery
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    • 제34권3호
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    • pp.173-179
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    • 2012
  • Purpose: This study was to determine the effects of surgical induction of anterior disc displacement (ADD) on the distribution of glycosaminoglycan (GAG) and collagen fiber arrangement in the rabbit temporomandibular joint (TMJ) tissues including articular cartilage of condyle, disc, retrodiscal tissue, and articular eminence. Methods: We used van Gieson staining and Alcian blue critical electrolyte concentration (CEC) method to observe change of collagen fibers on disc and to measure GAG up to 10 weeks in TMJ tissues after surgical induction of ADD on 25 rabbits. Results: CEC measurements for GAG showed 0.3 M, 0.4 M, 0.6 M, and 0.8 M at 1 week, 2 weeks, 3, 4, and 8 weeks, 10 weeks, respectively. This result indicated that GAGs shifted to highly sulphated ones as time passed. Disruption of collagen fiber arrangement in the disk occurred at 10 days and aggravated at 3 weeks. Conclusion: Our study showed degenerative osteoarthritis changes in rabbit TMJ following surgical induction of ADD up to 10-week period.

계배 발생중의 단백질 및 당점액질 합성에 대한 4NQO의 영향 (Effects of 4-Nitroquinoline-1-oxide on Synthetic Patterns of Protein and Glycosaminoglycan during Chick Development)

  • Hah, Jae-Chung;Han, Bog-Key
    • 한국동물학회지
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    • 제26권4호
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    • pp.283-294
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    • 1983
  • 발암물질의 영향하에서 단백질 합성의 변화를 알고자 발암원의 일종인 4NQO를 발생중의 계배 난황난에 주입하여 연구하였다. 각 장기에서 발생의 진행과 병행하여 단백질과 당점액질의 합성양상에 변화가 있었으며 대조군에 비하여 4NQO 처리군에서 일반적으로 각 단백질과 당점액질이 감소되는 경향을 보였다. 이러한 4NQO의 영향은 조직간에 특이적이었으며 심근에서는 큰 변화를 볼 수 없었으나 특히 4NQO 처리 24시간후의 허파와 사낭근에서는 현저한 감소를 나타내었다. 이로써 4NQO는 조직특이적이기는 하나 단백질과 당점액질의 합성에 영향을 비친다는 것을 알 수 있었다.

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