• Title/Summary/Keyword: Chorioallantoic membrane (CAM) assay

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Fermented Ginseng with Bifidobacterium Inhibits Angiogenesis of Human Umbilical Endothelial Cells in vitro and in vivo

  • Ko, Yu-Jin;Park, Seung-Hee;Park, Byung-Chul;Lee, Yong-Hwa;Kim, Jung-Ae
    • Biomolecules & Therapeutics
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    • v.15 no.2
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    • pp.89-94
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    • 2007
  • Ginseng is a widely-used alternative medicine for the treatment of cancer, diabetes, and cardiovascular diseases. Active components of P. ginseng, absorbed through gastrointestinal tract are the fermented ginsenosides by intestinal microorganisms. In the present study, we investigated the inhibitory effects of fermented ginseng with bifidobacterium (FGb) on the angiogenesis by analyzing in vitro tube formation and invasion assay using human umbilical vein endothelial cells (HUVECs), and in vivo angiogenesis using chick chorioallantoic membrane (CAM) assay. Treatment with FGb inhibited tube-like structure formation in a concentration-dependent manner. In addition, FGb significantly suppressed HUVEC invasion through Matrigel. Moreover, FGb dosedependently inhibited VEGF-induced angiogenesis in a CAM assay. These results suggest that FGb is a valuable anti-angiogenic remedy.

In vivo Angiogenic Activity of Dichloromethane Extracts of Aloe vera Gel

  • Lee, Myoung-Jin;Yoon, Soo-Hong;Lee, Seung-Ki;Chung, Myung-Hee;Park, Young-In;Sung, Chung-Ki;Choi, Jae-Sue;Kim, Kyu-Won
    • Archives of Pharmacal Research
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    • v.18 no.5
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    • pp.332-335
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    • 1995
  • The angiogenic activity of Aloe vera (Aloe baradensis), known as a good healing plant, was investigated. We have extracted and fractionated dichloromethane extract (G1M1D1) and methanol soluble fraction of dichloromethane extract (G1M1D1M1) which contain low-molecular weight substances of Aloe vera gel. G1M1D1 and G1D1M1 fractions induced a radially arranged, spoke-sheel-like vasculature in chick embryo chorioallantoic membrane (CAM) assay. The angiogenic activity was dose-dependent and the angiogenic pattern in the CAM assay. The angiogenic activity was dose-dependent and the angiogenic pattern in the CAM assay was very similar to that of phorbol 12-myristate-13-acetate (PMA) used as a positive control. The modified CAM assay, e simple and accurate quantitating method, was used to quntitate the angiogenic activity of G1D1M1 fraction. Application of G1M1D1M1 fraction ($100\mug/egg$) resulted in much more intense angiogenesis than in control while slightly less intense angiogenesis than in PMA (100 ng/egg).

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In vitro test using chorioallantoic membrance vascular assay to assess the irritancy potential of surfactants (CAMVA(Choriollantoic Membrane Vascular Assay)를 이용한 계면활성제의 자극 평가에 관한 연구)

  • Go, Jae-Suk;An, Su-Seon;Park, Jong-Ho
    • Journal of the Society of Cosmetic Scientists of Korea
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    • v.21 no.1
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    • pp.67-83
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    • 1995
  • Skin irritations accompany the series of complex, physical and chemical changes. Alternative methods which reflect the biological phenomenon more sensitively are necessary for the purpose of reducing the animal tests and improving the accuracy and reliability. Chorioallantoic membrane (CAM) vascular assay is a in vitro method which utilizes the chorioallantoic membrane of hen's fertilized egg of about 10 days old. Test substances are placed directly onto the surface of the CAM and 1 hour later the CAM vasculature is subjectively evaluated to determine with a chemically related-injurious reponse including the appearance of haemorrage, congestion, coagulation, and so on. In this research, using the various surfactants, the correlations of CAMVA with in vivo models (intradermal safety test and human primary irritation test) were investigated. And CAMVA closely correlated to intradermal safety test (r=0.89) and human primary irritation test (r=0.90). From the result, it seems that CAMVA can also be used as a method for predicting the skin irritaions.

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Pharmacological activities of Dongchunghacho strains

  • Won, So-Young;Koo, Hye-Jin;Jung, Hyun-Joo;Soh, Ji-Hyun;Park, Eun-Hee
    • Proceedings of the PSK Conference
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    • 2003.10b
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    • pp.78.3-79
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    • 2003
  • Dongchunghacho (Dong-Chong-Xia-Cho in Chinese) is one of entomogenous fungi that grow as parasites mainly to pupae or larvae. It includes many different genera such as Cordyceps, Paecilomyces, Torrubiella and Podonectria. The ethanolic extract of Cordyceps scarabaeicola, prepared from its fruiting bodies, showed significant inhibitory activity on angiogensis, which was detected by chick embryo chorioallantoic membrane (CAM) assay. The ethanolic extract of media-cultured Paecilomyces japonica also showed significant anti-angiogenic activity in CAM assay. (omitted)

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Inhibition of Angiogenesis by Propolis

  • Song, Yun-Seon;Park, Eun-Hee;Jung, Kyung-Ja;Jin, Changbae
    • Archives of Pharmacal Research
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    • v.25 no.4
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    • pp.500-504
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    • 2002
  • Propolis, obtained from honeybee hives, has been used in Oriental folk medicine as an anti-inflammatory, anti-carcinogenic, and immunomodulatory agent. There is considerable evidence suggesting that angiogenesis and chronic inflammation are codependent. Blockage of angiogenesis results in an anti-inflammatory effect. Ethanol (EEP) and ether extracts of propolis (REP), and caffeic acid phenethyl ester (CAPE), an active component of propolis, were examined for their anti-angiogenic activities using the chick embryo chorioallantoic membrane (CAM), and the calf pulmonary arterial endothelial (CPAE) cell proliferation, assays. The presence of EEP, REP and CAPE inhibited angiogenesis in the CAM assay and the proliferation of CPAE cells. The results suggest that anti-angiogenic activities of EEP, REP and CAPE are also responsible for their anti-inflammatory effect.

Anti-angiogenic Activity of Ursolic Acid (우르솔릭산의 혈관형성 억제활성)

  • 손경희;이옥희;이열남;정해영;이정준;김규원
    • YAKHAK HOEJI
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    • v.37 no.5
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    • pp.532-537
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    • 1993
  • Angiogenesis refers to the formation of new capillary blood vessels, or neovascularization occurring under various physical conditions, such as development of the embryo, formation of corpus luteum, wound healing and pathological conditions including tumor growth and metastases, hemangiomas, diabetic retinopathy, rheumatoid arthritis. There are many evidences that angiogenesis is important for the progressive growth of solid tumors and also permits the shedding of metastatic tumors from the primary site. Thus, treatment of angiogenesis inhibitors might be a novel strategy for tumor growth inhibition. Normal vascular endothelial cells are in a state of differentiation and angiogenic endothelial cells migrate and proliferate, and they subsequently differentiate into vessel-forming quiescent phenotype cells, Therfore, it was speculated that a modifier of cell differentiation could also affect angiogenesis. In order to identify new antiangiogenic factors, the research was conducted to estimate the inhibitory activities of cell differentiation agents by means of chick embryo chorioallantoic membrane(CAM) assay. Hence, we have established the CAM assay for the screening of antiangiogenic agents. Using the CAM assay, we found that ursolic acid, a tumor cell differentiation-inducing agent, showed a markedly inhibitory effect on chick embryonic angiogenesis.

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알로에 성분 Ny932의 혈관생성 촉진작용과 그 작용기전

  • 김규원
    • Proceedings of the Korean Society of Toxicology Conference
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    • 1997.05a
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    • pp.57-60
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    • 1997
  • Aloe의 추출 시료들 중 혈관생성을 촉진하는 물질이 G1M1D1M1 분획에 있음을 chorioallantoic-membrane(CAM) assay, in vitro angiogenesis assay, u-PA, PAI, u-PAR, 및 matrix metalloprotease(MMP)의 유전자 발현조사, gelatin zymogram assay, modified CAM assay를 하여 확인 하였다. 그런 다음 G1M1D1M1 분획을 다시 분리하여 단일 성분인 NY932와 3종의 분획들을(U>3,000, 3,000>U>1,000, U<1,000) 얻었다. 이들 각각에 대한 혈관 생성 촉진 작용을 CAM assay 방법으로 조사한 결과 순수단일 성분인NY932가 혈관 생성 촉진 활성을 가장 높게 나타났다. 즉 NY932의 농도를 100ng, 2, 10, 35, 60 $\mu$g으로 투여하였을 때, 각각 2/18($11\%$), 4/10($49\%$), 16/22($73\%$), 15/17($88\%$), 9/9($100\%$)의 혈관생성 촉진 효과를 보였다. 따라서 순수 단일 성분인 NY932의 혈관 생성 촉진 작용기전을 규명하기 위하여 혈관 생성에 관련된 효소들[matrix metalloprotease(MMP)s, urokinase-plasminogen activator(uPA) 등]과 그 저해제들(TIMPs, PAI)의 유전자 발현을 조사하였으며, wounding migration assay등을 수행하였다.

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Inhibitory Effect of Agaricus Mixed Prescription on Metastasis and Tumor Formation

  • Chu Ji Hee;Lim Nak Cheol;Kim Sung Hoon;Ryu Ki Won
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.17 no.2
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    • pp.560-567
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    • 2003
  • Antimetastatic effects of Agaricus mixed prescription (AMP) were studied in the respect of blood-borne metastasis. For this aim, cytotoxicity against various cancer cells and normal cells, Chicken Chorioallantoic membrane (CAM) assay, cancer cell adhesion assay, platelet aggregation assay, pulmonary colonization, life span of S-180 implanted mice, and cytokine release assay were evaluated, respectively. The results were summarized as follows; AMP did not exert any cytotoxicity against all cell lines with IC50 of 25mg/ml on B16BL6. AMP disrupted formation of CAM at 1mg/ml. AMP was suppressive in adhesion assay of B16BL6. AMP also inhibited tumor induced platelet aggregation. In pulmonary colonization assay by B16BL6, the number of colonies in the lungs was significantly decreased in sample group than in control group. In animal study with S-180, the life span of AMP treated group was extended than that of control group. IL-12 was effectively increased in AMP treated group in cytokine release assay. Taken together, AMP can be possibly applied to cancer or metastasis.

Effect of human milk on the angiogenesis and endothelial cell growth (혈관현성 및 혈관내피세포의 성장에 미치는 모유의 영향)

  • Lee, Ok-Hee;Kim, Jung-Sun;Shim, Kyung-Hee;Kim, Kyu-Won;Chung, Hae-Young
    • Journal of Life Science
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    • v.5 no.3
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    • pp.117-120
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    • 1995
  • Human milk was examined for antiangiogenic activities by using the chick embryo chorioallantoic membrane (CAM) assay and endothelial cell growth. The low molecular weight (20 KD>$\sim$ ) fraction of human milk stimulated the angiogenesis and increased the endothelial cell growth. These results suggest that the increase of angiogenesis and endothelial cell growth might be attributed to several growth factors and/or angiogenic factors in low molecular fraction (20 KD>$\sim$) of human milk.

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An Anti-angiogenic Principle from Gardenia jasminoides.

  • Koo, Hye-Jin;Song, Yun-Seon;Jin, Chang-Bae;Jung, Kyung-Ja;Lee, Sang-Hyun;Shin, Kuk-Hyun;Park, Eun-Hee
    • Proceedings of the PSK Conference
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    • 2003.04a
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    • pp.145.2-145.2
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    • 2003
  • Gardenia jasminoides Ellis has been used in traditional medicine for the treatment of inflammation, jaundice, headache, fever and hypertension. The 70% ethanolic extract of gardenia fruit showed strong anti-angiogenic activity in the chick embryo chorioallantoic membrane (CAM) assay. Among hexane, ethyl acetate, n-butanol and aqueous fractions prepared from the 70% ethanolic extract, the n-butanol fraction was found to be most effective in the CAM assay. (omitted)

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