• Title/Summary/Keyword: standardized material

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Anti-neuroinflammatory Effects of Quercetin-3-O-glucuronide Isolated from the Leaf of Vitis labruscana on LPS-induced Neuroinflammation in BV2 Cells (포도잎으로부터 분리된 Quercetin-3-O-glucuronide의 LPS로 유도된 BV2 미세아교세포에서의 항염증 효과)

  • Yoon, Chi-Su;Kim, Dong-Cheol;Ko, Won-Min;Kim, Kyoung-Su;Lee, Dong-Sung;Kim, Dae-Sung;Cho, Hyoung-Kwon;Seo, Jungwon;Kim, Sung Yeon;Oh, Hyuncheol;Kim, Youn-Chul
    • Korean Journal of Pharmacognosy
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    • v.45 no.1
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    • pp.17-22
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    • 2014
  • Grapes has long been used for food, and reported as containing polyphenol which has antioxidant and anti-cancer effects. Neuroinflammation is chronic inflammation at the brain, lead to neurodegenerative diseases. In this study, quercetin-3-O-glucuronide (QG) isolated from the leaf of Vitis labruscana has anti-neuroinflammatory effects. QG were investigated using MTT assay, western blot, nitric oxide (NO) assay, prostaglandin $E_2$ ($PGE_2$) assay, cytokine assay in lipopolysaccharide (LPS)-induced inflammation in BV2 cells. QG dose-dependently attenuated the expression of inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2), accordingly inhibited the production of NO and $PGE_2$. QG decreases the levels of proinflammatory cytokine such as tumor necrosis factor-${\alpha}$ (TNF-${\alpha}$), interlukin-$1{\beta}$ (IL-$1{\beta}$). Thereby, QG may offer therapeutic potential for treatment of neurodegenerative disease related to neuroinflammation.

Anti-inflammatory Effect of the Cirsium japonicum var. ussuriense 70% Ethanolic Extract in RAW264.7 Cells by Heme oxygenase-1 Expression (엉겅퀴 70% 에탄올 추출물의 RAW264.7 세포에서 Heme oxygenase-1 발현을 통한 항염증 효과)

  • Lee, Dong-Sung;Kim, Kyoung-Su;Li, Bin;Choi, Hyun-Gyu;Keo, Samell;Jun, Ki-Young;Park, Jun-Hyeong;Kim, Youn-Chul
    • Korean Journal of Pharmacognosy
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    • v.43 no.1
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    • pp.39-45
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    • 2012
  • Cirsium japonicum var. ussuriense has long been used in herbal medicine for the treatment of arthritis, dyspepsia, and bleeding in Korea. In the present study, we investigated anti-inflammatory effects of C. japonicum var. ussuriense against lipopolysaccharide(LPS)-induced activation in RAW264.7 cells by the expression of heme oxygenase (HO)-1. The 70% EtOH extract of the aerial parts of C. japonicum var. ussuriense (CJE), showed the potent anti-inflammatory effects on LPS-induced inflammation in RAW264.7 cells. The anti-inflammatory effect of CJE was demonstrated by the suppression of pro-inflammatory mediators, including pro-inflammatory enzymes (inducible nitric oxide synthase and cyclooxygenase-2). Furthermore CJE induced HO-1 expression through nuclear translocation of nuclear factor E2-related factor 2 (Nrf2) and increased HO activity in RAW264.7 macrophages. The effects of CJE on LPS-induced NO and $PGE_2$ productions were partially reversed by an HO-1 inhibitor, tin protoporphyrin (SnPP). Therefore, it is suggested that CJE-induced HO-1 expression plays a role of the resulting anti-inflammatory effects in macrophages. These results suggest that CJE may be a promising candidate for the treatment of inflammatory diseases.

Test Witness Methodology for Acquisition of the Composite Material Qualification Data (복합재 재료인증을 위한 시험입회 방법론)

  • Rhee, Seung Yun
    • Journal of Aerospace System Engineering
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    • v.9 no.3
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    • pp.8-11
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    • 2015
  • Since the late 1990's, FAA, NASA and the aerospace industry have worked together to develop the sharing system of the composite material qualification databases which were obtained through the standardized fabrication and testing procedures. The result was what is now known as the AGATE(Advanced General Aviation Transport Experiments) or NCAMP(National Center for Advanced Materials Performance) methodology, a more cost-effective concept that shifts the major responsibility for qualification and testing from the aircraft manufacturer to the material supplier. The properties of composite materials are largely dependent on the testing as well as the raw material properties and the manufacturing process including the process control parameters. Thus it is important in the composite material qualification to comply with the standardized testing procedures. In this paper, I will describe the standardized witness methodologies of certification engineers to reduce the effect of testing variability within the qualification data.

Neuroprotective Effect of the Water-insoluble fraction of Root Barks of Dictamnus dasycarpus 70% Ethanolic Extract on Glutamate-Induced Oxidative Damage in Mouse Hippocampal HT22 Cells (백선피 70% 에탄올 추출물의 비수용성 분획물의 뇌세포 보호 효과)

  • Choi, Hyun-Gyu;Lee, Dong-Sung;Li, Bin;Jun, Ki-Yong;Jeong, Gil-Saeng;Kim, Youn-Chul
    • Korean Journal of Pharmacognosy
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    • v.42 no.2
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    • pp.175-181
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    • 2011
  • Oxidative stress or accumulation of reactive oxygen species (ROS) leads neuronal cellular death and dysfunction, and it contributes to neuronal degenerative disease such as Alzheimer's disease, Parkinson's disease and stroke. Glutamate is one of the major excitatory neurotransmitter in the central nervous system (CNS). Glutamate contributes to fast synaptic transmission, neuronal plasticity, outgrowth and survival, behavior, learning and memory. In spite of these physiological functions, high concentration of glutamate causes neuronal cell damage, acute insults and chronic neuronal neurodegenerative diseases. Heme oxygenase-1 (HO-1) enzyme plays an important role of cellular antioxidant system against oxidant injury. NNMBS020, the water-insoluble fraction of the 70% EtOH extract of root barks of Dictamnus dasycarpus, showed dominant neuroprotective effects on glutamate-induced neurotoxicity in mouse hippocampal HT22 cells by induced the expression of HO-1 and increased HO activity. In mouse hippocampal HT22 cells, NNMBS020 makes the nuclear accumulation of Nrf2 and stimulates extracellular signal-regulated kinase (ERK) pathway. The ERK MAPK pathway inhibitor significantly reduced NNMBS020-induced HO-1 expression, whereas the JNK and p38 inhibitors did not. In conclusion, the water-insoluble fraction of the 70% EtOH extract of root barks of D. dasycarpus (NNMBS020) significantly protect glutamate-induced oxidative damage by induction of HO-1 via Nrf2 and ERK pathway in mouse hippocampal HT22 cells.

Neuroprotective Effects of Cambodian Plant Extracts on Glutamate-induced Cytotoxicity in HT22 Cells

  • Keo, Samell;Lee, Dong-Sung;Li, Bin;Choi, Hyun-Gyu;Kim, Kyoung-Su;Ko, Won-Min;Oh, Hyun-Cheol;Kim, Youn-Chul
    • Natural Product Sciences
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    • v.18 no.3
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    • pp.177-182
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    • 2012
  • Oxidative stress potentially induces neurotoxicity which is believed to underlie several major age-related diseases of the central nervous system. This study sought to identify the cytoprotective effects of sixty-nine Cambodian plants against glutamate-induced cell death. Cultured HT22 cells were applied as an in vitro model, and neurotoxicity was induced in these neuronal cells by exposure to a determined concentration of glutamate. Sixty-nine plant sources, as Cambodia's indigenous species, were purchased from O'reusey Market, Phnom Penh, and extracted with ethanol. These extracts were screened for cytoprotective effects against glutamate-triggered neurotoxicity in HT22 cells at concentrations of 100 and 300 ${\mu}g/ml$. Of these, eight ethanol extracts, bark of Anacardium occidentale, bark and sapwood of Bauhinia pulla, flowers of Borassus flabellifer, stems and leaves of Coix lacryma-jobi, bark and sapwood of Diospyros nitida, sapwood of Dipterocarpus obtusifolius, stems of Oryza rufipogon, and fruits of Phyllanthus emblica, showed significant cytoprotective effects against glutamate-induced cell damage and degeneration in HT22 cells.

A Study on Excavation and Transmission of Native Local Foods in the Namhae Region - Recipes and Nutrients of Various Fish Soups - (남해군의 전통 향토 음식 발굴 및 전승에 관한 연구 - 생선국 및 탕의 조리법과 영양 성분 -)

  • Kim, Jung-Suk;Kim, Sang-Ae
    • Culinary science and hospitality research
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    • v.13 no.2
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    • pp.47-58
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    • 2007
  • The purpose of this study was to develop and succeed local foods such as Yangte miyuck-gook, Getjango-tang, Boongjango-gook, Sook doenjang-gook, Mulmegi-gook and Mukjang-gook in the Namhae region. To derive standardized recipes; first, a test recipe was prepared based on the information obtained from literature material, personal interviews of Namhae natives, and surveys of restaurant recipes through restaurant owners and chefs in the Namhae area. After that, standardized recipes were made in accordance with the collected data. Then, CAN Program 2.0 was used for the nutritional evaluation. Most of these fish soups contained high percentages of protein, minerals and vitamins. Getjango-tang and boongjango-gook were higher than the other foods in most of nutrition contents, which were particularly good sources of calcium and iron.

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A Comparison of Anti-inflammatory Effects of Sophorae Flos EtOH Extracts at the Different Flowering Stages on LPS-induced Inflammation in RAW264.7 cells (LPS로 유도된 RAW264.7 세포주에서 개화정도별 괴화 EtOH 추출물의 항염증 효과 비교연구)

  • Ko, Wn-Min;Lee, Dong-Sung;Jang, Mi;Kim, Kyoung-Su;Lee, Hee-Suk;Baek, Hum-Young;Oh, Hyuncheol;Kim, Youn-Chul
    • Korean Journal of Pharmacognosy
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    • v.44 no.3
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    • pp.291-297
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    • 2013
  • Sophorae Flos (SF), a composite of flowers and flower-buds of Sophora japonica, has long been used in traditional Korean and Chinese medicines for the treatment of hemostasis and inflammation. In this study, we investigated anti-inflammatory effect of four EtOH extracts at the difference in blooming stages of flowers on LPS-induced inflammation in RAW264.7 cells. We classified the flowers of Sophora japonica with SF-1 (length of flower is shorter than calyx), SF-2 (length of calyx is shorter than flower), SF-3 (full bloom), and SF-4 (not blooming at all). We examined HPLC analysis, whether quercetin and rutin are major component of these Sophorae Flos extracts or not. As a result, SF-1 contained quercetin, but the others did not. In addition, quercetin, SF-1, and SF-4 act on the suppression of pro-inflammatory mediators including inducible nitric oxide synthase (iNOS), cyclooxygenase (COX)-2, nitric oxide (NO), prostaglandin E2 ($PGE_2$) against lipopolysaccharide (LPS)-induced activation in RAW264.7 cells. Of these, SF-1 showed the best anti-inflammatory effect. These results suggest that Sophorae Flos with the highest content of quercetin would be used for the treatment of various inflammation diseases.

한약재 품질관리의 개선방향

  • Park, Jin-Han
    • 대한한약학회:학술대회논문집
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    • 2007.11a
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    • pp.129-144
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    • 2007
  • In order for stable demand-supply and regularity of distribution, "The regulations for management of demand-supply and distribution of medicinal herbs" were established on 1995. Therefore, the medicinal herbs of good quality have been controled to be distributed in the market. However, to be wide of the purpose, the standardized sound distribution system was caused due to the governmental control on demand-supply to protect domestic farmers who produce the material for medicinal herbs, which results in the over distribution of non-standardized or illegally imported medicinal herbs. In addition, because of the distribution of faulty or poor medicinal herbs, there are chances of affecting bad effects on public health. The standardized medicinal herbs cover 514 different kinds in total, of which 69 products are specified to be standardized in the oriental medicine product companies. Also, in order to protect farmers who produce the materials for medicinal herbs, the amount of imported materials are regulated in normal times. The 14 different materials for medicinal herbs, which are allowed to be imported to a certain amount only when the shortage of goods or sudden rise of prices is to happen, are frequently introduced into domestic market as food not as medical usage, and the origin of those illegally changes to home cropped one for the distribution in the market. In addition, the system of distribution are to be disordered and the condition for the distribution of medicinal herbs of good quality can not be made since they illegally changes the usage of the materials for medicinal herbs from their original one and can not be regulated by the domestic laws.

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Design Research of the Natural Leather using a Marbling Technique (I) (Marbling 기법을 응용한 천연가죽의 디자인 연구 (I))

  • Lee, Sang-Chul;Shin, Eun-Chul;Kim, Won-Ju;Park, Soo-Min
    • Textile Coloration and Finishing
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    • v.20 no.1
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    • pp.1-7
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    • 2008
  • The study has attempted to introduce a new coating than the conventional standardized method of spray, padding and roll coating. The study has focused on finding condition for separating water and organic layer in marble bath and surface effects according to kind of raw hide. It was found that dyestuff-free was to be used in water layer and the input amount of initial insoluble pigment to be added in marble bath should be adjusted following the change of surface area of the marble bath in order to get efficient marble effect while preventing coagulation of water and organic layers. Eventually, amorphous high value-added leather could be obtained treated in process other than the conventional standardized method. Even raw hides of low grades($C{\sim}E$ grades) could be processed into amorphous marble effect that could conceal or shield surface scratches by the colorant, which eventually eliminated necessity of using excessive amount of chemicals in the coating process leading to achieving high quality marble leather of natural look.