• Development and Reproduction
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• 제23권2호
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• pp.111-117
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• 2019

This study focused on the association of prostaglandins and a progestin, $17{\alpha}$, $20{\beta}P$-dihydroxy-4-pregnen-3-one ($17{\alpha}20{\beta}P$) during the ovulation process in longchin goby, Chasmichthys dolichognathus. We performed several in vitro experiments using $850-920{\mu}m$ diameter oocytes which were at the migratory nucleus stage. With the $890-920{\mu}m$ diameter oocytes, no significant difference in ovulation was observed in any of the prostaglandins (PGE1, PGE2, and $PGF2{\alpha}$) treated groups although PGE2 and $PGF2{\alpha}$ at concentrations of 50 ng/mL increased ovulation slightly compared with controls; however, $17{\alpha}20{\beta}P$ production was stimulated with PGE1 alone at low concentrations (5 ng/mL). In $850{\mu}m$ diameter oocytes, $PGF2{\alpha}$ at concentrations of 50 and 500 ng/mL resulted in a significant increase in ovulation. $17{\alpha}20{\beta}P$ (50 ng/mL) alone had no observable effect on ovulation, but in the combined of $PGF2{\alpha}$ 50 or 500 ng/mL it caused the greatest effect on ovulation. The sensitivity of oocytes to the induction of ovulation varies between 850 and $890-920{\mu}m$, it appeared to vary depending on the migration status of nucleus. These results suggest that $PGF2{\alpha}$ (or combined of $17{\alpha}20{\beta}P$) was more potent in inducing ovulation of the longchin goby.

• The Journal of Pediatrics of Korean Medicine
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• 제21권2호
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• pp.97-107
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• 2007

Objectives This experiment is about Jojoongikgi-tang(JIT) exerts anti-inflammatory effects in BV2 microglial cells, and the effect of JIT on Nitric oxide(NO) production in lipopolysaccharide(LPS)-stimulated BV2 microglial cells were also demonstrated. Methods To investigate the anti-inflammatory effects of JIT, NO production, expression level of iNOS mRNA, PGE2 synthesis, expression COX-2 mRNA, cell viability, $TNF-{\alpha}$ mRNA expression were examined. Results The expression level of inducible nitric oxide synthase(iNOS) was decreased by JIT, and the production of Prostaglandin E2(PGE2) and the expression of Cox-2 mRNA also were inhibited by JIT. Proinflammatory mediators, such as $TNF-{\alpha}$, $IL-1{\beta}$, IL-12, were inhibited by JIT in a dose-dependent manner. Conclusions JIT have anti-inflammatory effects in BV2 microglial cells and could be used in inflammatory disease.

• Archives of Pharmacal Research
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• 제27권3호
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• pp.314-318
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• 2004

Microglia are the major inflammatory cells in the central nervous system and become activated in response to brain injuries such as ischemia, trauma, and neurodegenerative diseases including Alzheimer's disease (AD). Moreover, activated microglia are known to release a variety of proinflammatory cytokines and oxidants such as nitric oxide (NO). Minocycline is a semi-synthetic second-generation tetracycline that exerts anti-inflammatory effects that are completely distinct form its antimicrobial action. In this study, the inhibitory effects of minocycline on NO and prostaglandin E$_2$ (PGE$_2$) release was examined in lipopolysaccharides (LPS)-challenged BV2 murine microglial cells. Further, effects of minocycline on inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) expression levels were also determined. The results showed that minocycline significantly inhibited NO and PGE$_2$ production and iNOS and COX-2 expression in BV2 microglial cells. These findings suggest that minocycline should be evaluated as potential therapeutic agent for various pathological conditions due to the excessive activation of microglia.

• Biomedical Science Letters
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• 제15권4호
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• pp.343-347
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• 2009

Cytochalasin D (CD) is known as a disruptor of actin cytoskeleton architecture in chondrocytes. We have studied the role of CD in retinoic acid (RA) caused dedifferentiation and inflammation responses in rabbit articular chondrocytes. We have examined the effect of CD on RA induced dedifferentiation of chondrocytes. CD inhibited RA induced dedifferentiation determined by Western blot analysis and Alcian blue staining in rabbit articular chondrocytes. Also, CD additionally reduced inflammation response molecules such as cyclooxygenase-2 (COX-2) and prostaglandin $E_2$ ($PGE_2$) in RA treated cells. Treatment of CD reduced phosphorylation of p38 by treatment of RA. Inhibiton of p38kinase with SB203580 reduced expression of COX-2 and production of $PGE_2$ by treatment of CD in RA treated cells. But, Inhibiton of p38kinase with SB203580 did not any relationship with effect of CD on RA caused dedifferentiation. In summary, our results indicate that CD regulates RA reduced expression of COX-2 and production of PGE2 via p38kinase pathway.

• Journal of Physiology & Pathology in Korean Medicine
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• 제17권3호
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• pp.804-809
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• 2003

Kagam-bojungikgitang is the water extracts prepared from Ginseng Radix, Astragali Radix. Angelicae gigantis Radix, Astractylodis Rhizoma alba, Aurantii nobilis Pericarpium, Glycyrrhizae Radix, Artemisiae iwayomogii Herba, and Scutellariae Radix. This is a modified prescription of Bojungikgitang, which has been used for the treatment of indigestion, and immunological disease in oriental countries. In this study, the effects of Kagam-bojungikgitang and Bojungikgitang on the production of prostaglandin E₂ (PGE₂) and the expression of cyclooxygenase-2 (COX-2) were examined using RAW 264.7 macrophages activated with lipopolysaccharide (LPS). Both prescriptions dose-dependently reduced the release of PGE2 and expression of COX-2 caused by stimulation of LPS without cytotoxic effect. Kagam-bojungikgitang's inhibitory effects were better than Bojungikgitang in PGE2 production and COX-2 expression. Moreover, Kagam-bojungikgitang also attenuated markedly the production of tumor necrosis factor (TNF)-α, and IL-6 than Bojungikgitang in LPS-stimulated RAW 264.7 macrophages. These results suggest that Kagam-bojungikgitang decreases PGE2 and pro-inflammatory cytokine production in macrophages and these properties may contribute to the anti-inflammatory activity of Kagam-bojungikgitang.

• The korean journal of orthodontics
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• 제20권2호
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• pp.247-266
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• 1990

The alveolar bone remodeling is essential in tooth movement by orthodontic forces. The collagen and chondroitin sulfate are acting as an important roles in bone remodeling. This study was performed to measure out the quantity of the collagen and chondroitin sulfate in the alveolar bone of rats applied by experimental orthodontic forces. The 150 Sprague-Dawley male rats were divided into the $PGE_2$ treated group, indomethacin treated group and the normal group. A 80gm force rubber band was used as a orthodontic appliance between upper incisors and right upper 1st molar, and left side of experimental rats with no appliance was regarded as a control side. The samples of alveolar bones were obtained from pressure and tension sites in all three groups. respectively, and in control sides, too. The results were as follows. 1. The change in total collagen remains stable in both pressure and tension sites of all three groups, compared with control side by the time consuming. 2. The change in soluble collagen showed the most highest level in tension site, lowest level in pressure site of $PGE_2$ treated group in 5th. experimental day. 3. The change in chondroitin sulfate showed the most highest level in pressure site, lowest level in tension site of $PGE_2$ treated group in 5th. experimental day. 4. In indomethacin treated group, the change of soluble collagen and chondroitin sulfate showed small range of variance compared with $PGE_2$ treated and normal group.

• Journal of the Korean Society of Food Science and Nutrition
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• 제44권4호
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• pp.516-523
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• 2015

This study investigated the antimutagenic and anticancer effects of Platycodon grandiflorum extract (PGE) and its fractions against carcinogenic N-nitrosodimethylamine (NDMA) and genotoxicity. The Ames Salmonella mutagenicity test employing histidine mutants of Salmonella Typhimurium TA98 and TA100 was used to examine the mutagenicity of PGE and its fractions. Bacterial reversion assay with S. Typhimurium TA98 and TA100 did not show a significantly increased number of revertant colonies. The same test was used to examine the ability of PGE and its fractions to prevent acquisition of N-methyl-N'-nitro-N-nitrosoguanidine- and 4-introquino-line-1-oxide-induced mutations. PGE and its fractions inhibited mutagenesis in a dose-dependent manner. Among the fractions, ethyl acetate fraction from PGE (PGEA) exhibited a higher antimutagenic effect than other fractions. PGE and its fractions suppressed the growth of cancer cell lines, including human cervical adenocarcinoma, human hepatocellular carcinoma, human breast adenocarcinoma, human lung carcinoma, and transformed primary human embryonic kidney cells. In addition, we evaluated the antitumor activity of PGEA and its fractions in sacorma-180 solid tumor-bearing mice. In vivo anticancer activity results showed that PGE and its fractions could more effectively suppress tumor growth than the control. PGEA showed higher in vitro and in vivo anticancer effects than PGE and other fractions, and PGEA inhibited NDMA formation. Thus, we showed that PGEA has antimutagenic and anticancer activities, making it a candidate anticancer material under these experimental conditions.

• The korean journal of orthodontics
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• 제19권2호
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• pp.25-34
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• 1989

This experiment was performed to study the effect of prostaglandin $E_2$ on tooth movement and root resorption in orthodontically treated cats. Twenty five cats were divided into five groups and closed coil springs delivered 80gm were stretched between upper canine and 3rd premolar. $10{\mu}g$ of $PGE_2$ was injected locally in the submucosal area of the upper right canine, while the left side served as a control and was injected saline 0.1ml. The distance between canine tip and central cusp tip of the 3rd premolar was measured. Scanning electron photomicrographs were made of the coronal half of the distal root surface of canines and cemental craterings were observed and quantified using point-counting volumetry. Data were analyzed by 2-way ANOVA and paired t-test. The results were as follows: 1. The rate of tooth movement of the $PGE_2$ side was increased, particularly at 1 day, compared with the control side. 2. The rate of tooth movement was minimum from 7 days to 10 days. 3. The resorption of root surface of the $PGE_2$ side was decreased from 4 days to 10 days, compared with the control side.

• Journal of Life Science
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• 제27권11호
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• pp.1315-1323
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• 2017

Turmeric is a rhizomatous herbaceous perennial plant (Curcuma longa (CL)) of the ginger family, Zingiberaceae. A yellow-pigmented fraction isolated from the rhizomes of CL contains curcuminoids belonging to the dicinnamoyl methane group. Curcumin is an important active ingredient responsible for the biological activity of CL. However, CL is not usually used as a food source due to its bitter taste. The present study was designed to determine the effect of the CL fermented by Rhizopus oryzae (FCL) on pro-inflammatory factors such as nuclear factor ${\kappa}B$ ($NF-{\kappa}B$), tumor necrosis factor alpha ($TNF-{\alpha}$), interleukin-6 (IL-6), nitric oxide (NO), prostaglandin $E_2$ ($PGE_2$), inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) in lipopolysaccharide (LPS)-induced RAW 264.7 cell line. The cell viability was determined by MTT assay. To evaluate the anti-inflammatory effect of FCL 80% EtOH extracts, IL-6 and $TNF-{\alpha}$ were measured by ELISA kit. Also, the amount of $NO/PGE_2/NF-{\kappa}B$ was measured using the $NO/PGE_2/NF-{\kappa}B$ detection kit and the iNOS/COX-2 expression was measured by Western blotting. The results showed that the FCL reduced NO, $PGE_2$, iNOS, COX-2, $NF-{\kappa}B$, IL-6 and $TNF-{\alpha}$ production without cytotoxicity. These results suggest that FCL extracts may be a developed the functional food related to anti-inflammation due to the significant effects on inflammatory factors.

• Journal of Physiology & Pathology in Korean Medicine
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• 제23권3호
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• pp.599-607
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• 2009

Prunellae Spica is the spike or whole plant of Prunella vulgaris Linne, which has been used for clearing heat from the liver, brightening the eyes and treating headache in traditional oriental medicines. This study was conducted to evaluate the inhibitory effects of the aqueous extract of Prunellae Spica (PSE; PS extract) on the production of NO and PGE2 in LPS-activated Raw 264.7 cells. Cell viability was determined by MTT assay, and all three doses of PS extract (0.03, 0.1 and 0.3 mg/ml) had no significant cytotoxicity during the entire experimental period. The cells were treated with 1 ${\mu}g/ml$ of LPS 1 h before adding PS extract, and increased NO and PGE2 production were detected in LPS-activated cells compared to control. However, these increases were dose-dependently attenuated by treatment with PS extract. The inhibition of NO by PS extract was due to the suppression of iNOS expression via inhibition of $NF{\kappa}B$ nuclear translocation and proteolytic degradation of $I{\kappa}B{\alpha}$. The decreased level of PGE2 was derived from inhibition of COX-2 activity, but expression of COX-2 protein was not affected by PS extract. Moreover, PS extract reduced the elevated production of IL-${\beta}$ and IL-6 by LPS. These results demonstrate that PS extract has inhibitory effects on the production of NO and PGE2 as a consequence of the reduction of proinflammatory cytokines, especially IL-${\beta}$ and IL-6 in LPS-activated Raw 264.7 cells.