• Title/Summary/Keyword: Prostaglandin E

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Inhibitory Effects of Extracts from Arabis glabra on Lipopolysaccharide Induced Nitric Oxide and Prostaglandin E2 Production in RAW264.7 Macrophages (RAW264.7 대식세포에서 장대나물 추출물의 Nitric oxide 및 Prostaglandin E2생성 저해효과)

  • Nam, Jung-Hwan;Seo, Jong-Taek;Kim, Yul-Ho;Kim, Ki-Deog;Yoo, Dong-Lim;Lee, Jong-Nam;Hong, Su-Young;Kim, Su-Jeong;Sohn, Hwang-Bae;Kim, Hyun-Sam;Kim, Bo-Sung;Shin, Ji-Sun;Lee, Kyung-Tea;Park, Hee-Jhun
    • Korean Journal of Plant Resources
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    • v.28 no.5
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    • pp.568-573
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    • 2015
  • Arabis glabra is a localized common rhizomatous flowering plant, This plant is often used in Korean traditional systems of medicine as a remedy for blood cleaning, detoxification, abscess, gastrospasm, arthritis, contraction and diarrhea. Generally drugs that are used for arthritis have antinociceptive and anti-inflammatory properties. However, validity of the anti-inflammatory activity has not been scientifically investigated so far. Therefore, the aim of this study was to investigate the anti-inflammatory potential of A. glabra using the ethanolic extract and its sub-fractions. To evaluate the anti-inflammatory effects, we examined the inflammatory mediators such as nitric oxide (NO) and prostaglandin E2 (PGE2) on RAW 264.7macrophages. Our results indicated that hexane and chloroform fraction significantly inhibited the LPS-induced NO and PGE2 production in the cells. The hexane fraction inhibitory activity for NO tests with IC50 values showed in 21.0 ㎍/㎖. The chloroform fraction inhibitory activity for PGE2 tests with IC50 values showed in 18.0 ㎍/㎖. These efficacy are expected to be able to present the potential for the development of health functional food for the prevention inflammatory diseases because it has sufficient preventive medical possibilities. Further, it is determined that it is necessary to further study the mechanism of cytokine and protein expression associated with inflammation.

Estrus Behavior and Superovulatory Response in Black Bengal Goats (Capra hircus) Following Administration of Prostaglandin and Gonadotropins

  • Mishra, O.P.;Gawande, P.G.;Nema, R.K.;Tiwari, S.K.
    • Asian-Australasian Journal of Animal Sciences
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    • v.17 no.10
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    • pp.1374-1377
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    • 2004
  • The present study was conducted to explore the possibilities of estrus induction and superovulation in a native Indian breed of goats called 'Black Bengal'. Forty-two adult non-pregnant females were divided in two groups, of which 18 goats were subjected to a superovulatory treatment comprising of equine chorionic gonadotropin (eCG), Prostaglandin (PGF2$\alpha$) and human chorionic gonadotropin (hCG) to induce superovulation. The remaining 24 goats received no treatment and served as controls for the parameter under study as well as recipients for embryo transfer studies. The average duration of estrus was found to be significantly increased in treated goats (34.2${\pm}$3.4 h) compared to controls 3.0${\pm}$2.4 h). The average duration between PGF administration and occurrence of estrus was 2.0${\pm}$5.2 h. After mid ventral laparotomy, superovulatory responses indicated a significant increase in the number of follicles, which was 8.27${\pm}$0.37 in the treatment group compared to 4.16${\pm}$0.17 in the control group. The number of corpora lutea was also significantly increased in treated animals compared to control (2.90${\pm}$0.86 vs. 0.74${\pm}$0.04) respectively per ovary per goat.

HQSAR Study of Microsomal Prostaglandin E2 Synthase (mPGES-1) Inhibitors

  • San Juan, Amor A.;Cho, Seung-Joo;Cho, Hoon
    • Bulletin of the Korean Chemical Society
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    • v.27 no.10
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    • pp.1531-1536
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    • 2006
  • Microsomal prostaglandin $E_2$ synthase (mPGES-1) is an enzyme that is associated with inflammation, pain, fever and cancer. Hologram quantitative structure activity relationship (HQSAR) was conducted on the series of MK-886 compounds acting as mPGES-1 inhibitors. A training set with 24 compounds was used to establish the HQSAR model. The best model was chosen based on the cross-validated correlation coefficient ($q^2$=0.884) and the correlation coefficient($r^2$=0.976). The model was utilized to predict the activity of the eight-test set of compounds giving the predictive $r^2$ value of 0.845. The descriptors of the model are based on fragment distinction (atoms, bond and connectivity) and fragment size (2-5 atoms). The atomic contribution maps generated from HQSAR were useful in identifying the important structural features responsible for the inhibitory activity of MK-886 inhibitors. Based on the generated model, the presence of hydrophobic biphenyl group seems to enhance inhibition of mPGES-1 that is in agreement with the previous experiments. In addition, it seems important for a halogen to be substituted to the biphenyl ring and for an acyl group to be attached to the indole moiety for enhanced activity.

Anti-inflammatory Effects of Smilacis Glabrae Rhizoma in Raw 264.7 Cells (토복령(土茯笭)의 Raw 264.7 세포에 대한 항염효과)

  • Oh, Sung-Won;Kim, Byoung-Woo
    • The Journal of Internal Korean Medicine
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    • v.30 no.2
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    • pp.288-297
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    • 2009
  • Objective : Inflammatory cytokines have a close relationship to insulin dependent diabetes mellitus (IDDM). The inhibitory effect of Smilacis Glabrae Rhizoma (SGR) were examined on production of nitric oxide (NO), prostaglandin $E_2$ $(PGE_2)$, synthase (iNOS), cyclooxygenase-2 (COX-2), tumor necrosis factor-${\alpha}$ (TNF-${\alpha}$) and NF-${\kappa}$B activation in Raw 264.7 cells. Methods: Raw 264.7 cells were pretreated with SGR(20, 50, 100 ${\mu}g$/ml), and then cultured with lipopolysaccharides (LPS). Cell viability was measured by MTT assay; inhibition of NO, $PGE_2$, and TNF-${\alpha}$ production were measured by Griess reagent and enzyme-linked immunosorbent assay(ELISA). Induction of COX-2 and iNOS were determined by western blotting analysis. Inhibition of NF-${\kappa}$B was measured by immunofluorescence assay (IFA). Results: SGR inactivated NF-${\kappa}$B, and inhibited the production of NO, iNOS, and $PGE_2$. Inhibition of COX-2 and TNF-${\alpha}$ could not be confirmed. Conclusions: From the above result. SGR was found to have an anti-inflammatory effect of inhibition of NO, iNOS, and $PGE_2$ production via inhibition of NF-${\kappa}$B.

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