• Journal of Korean Medicine Rehabilitation
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• v.21 no.1
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• pp.35-46
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• 2011

Objectives : The present study investigated inflammatory effect of Rheum undulatum L. in lipopolysaccharide-exposed rats and Raw 264.7 cells. Methods : Male rats weighting $185.39{\pm}8.21g$ fed basal diet for 1 week and 32 rats were divided into a control group and 3 experimental groups. We fed a control group of rats a basal diet and administered normal saline(100 mg/kg, 1time/1day) for 6 weeks. And we fed basal diet and administered an extract of Rheum undulatum L.(100 mg/kg, 200 mg/kg, 300 mg/kg, 1time/1day) to each experimental group of rats. We measured the plasma concentration of $IL-1{\beta}$($interleukin-1{\beta}$), IL-6 and $TNF-{\alpha}$(tumor necrosis $factor-{\alpha}$), liver cytokines, Raw 264.7 macrophages cytokines. Results : The plasma concentration of $IL-1{\beta}$, IL-6 and $TNF-{\alpha}$ peaked at 5h(hour) after LPS(lipopolysaccharides) injection, and the values of the Rheum undulatum L. extract groups were lower than those of the control group. In the increment of these cytokines concentration at 2h and 5h after LPS injection, the Rheum undulatum L. groups were lower than that of control group. The plasma concentration of IL-10 peaked at 5h after LPS injection, and the values of the Rheum undulatum L. extract groups were higher than those of the control group. In the increment of this cytokine concentration at 2h and 5h after LPS injection, the Rheum undulatum L. groups were higher than that of control group. Liver cytokines measurement was done at 5h after LPS injection. The concentration of liver $IL-1{\beta}$ and IL-6 in the Rheum undulatum L. groups was lower than that of the control group. The concentrations of liver $TNF-{\alpha}$, and IL-10 showed no significant differences among all the treatment groups. In the studies of lipopolysaccharide-exposed Raw 264.7 cells, the concentration of $IL-1{\beta}$, IL-6 and $TNF-{\alpha}$ in the lipopolysaccharide-exposed cells groups was higher than that of control group(normal group), and in the lipopolysaccharide-exposed cells groups, these values showed a tendency to decrease in the Rheum undulatum L. groups. The concentration of IL-10 in the lipopolysaccharide-exposed cells groups was higher than that of control group(normal group), and in the lipopolysaccharide-exposed cells groups, the values showed a tendency to increase in the Rheum undulatum L. groups. Conclusions : These results indicate that the Rheum undulatum L. extracts have an functional material for inflammatory activities.

• Journal of Physiology & Pathology in Korean Medicine
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• v.24 no.5
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• pp.843-847
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• 2010

Wikyung-Tang(WKT) is herbal medication used in abcess-causing respiratory disease. Previous in vitro study demonstrates that WKY presents anti-proliferative effects in A549 cells. Here we show that WKY protects mice against lipopolysaccharide(LPS)-induced acute lung injury (ALI). We pretreated mice orally with WKY(2.34 and 5.85 g/kg body weight) 1, 24 and 48 hours before intratracheal administration of LPS. For same condition, control group was pretaken orally distilled water before LPS administration. 24 hours after LPS intratracheal instillation, bronchoalveolar lavege fluids(BALF) was obtained to measure protein and proinflammatory cytokines(TNF-${\alpha}$, IL-$1{\beta}$, IL-6). Protein and proinflammatory cytokines in BALF of WKT treated groups were totally decreased. Statistically, Protein, TNF-${\alpha}$ and IL-$1{\beta}$ of high concentrate WKT treated group decreased significantly compared with control group. In conclusion, WKY had some anti-inflammatory effect in a clinically relevant model of ALI. these results indicated that WKY was effective in inhibiting ALI and might act as a potential therapeutic reagent for treating ALI in the future.

• Journal of Physiology & Pathology in Korean Medicine
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• v.26 no.3
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• pp.293-300
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• 2012

Inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) are important inflammatory mediators implicated in pathogenesis of inflammation and certain types of human cancers. The present study was designed to determine whether Red Ginseng (RG) could modulate $I{\kappa}B$-kinase, iNOS and COX-2 gene expression and immune responses in RAW 264.7 macrophages stimulated with lipopolysaccharide (LPS). RG extract suppressed the expression of LPS-induced $I{\kappa}B$, iNOS, COX-2, and immune responses in a dose-dependent manner. It also showed an anti-inflammatory effect by inhibiting NF-${\kappa}B$ immune response induced by LPS treatment. Inhibitory effect of RG on LPS-induced inflammation was mediated by suppressed phosphorylation of ERK, JNK and p38 through the regulation of the mitogen-activated protein kinase (MAPK) pathway leading to a decreased production of NO, iNOS, COX-2 and NF-${\kappa}B$. The results implied the role of RG as an inflammation regulator and its possible application for curing inflammatory diseases.

• Journal of Pharmacopuncture
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• v.15 no.1
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• pp.7-11
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• 2012

Aim: Historically, mineral compound herbal medicines have long been used in treatments of immune-related diseases in Korea, China and other Asian countries. In this study, we investigated the anti-inflammatory effect of egg white combined with chalcanthite (IS4) on lipopolysaccharide (LPS)-stimulated RAW 264.7 cells. Methods: RAW 264.7 cells cultured with LPS and various concentrations of IS4 were analyzed to determine the production of pro-inflammatory cytokines and mediators by using enzyme-linked immune sorbent assays (ELISAs). Results: IS4 concentration inhibited the production of interleukin-1beta (IL-$1{\beta}$), interleukin-6 (IL-6), and granulocyte-macrophage colony-stimulating factor (GM-CSF) induced by LPS. IS4 at high concentrations (25 and 50 ${\mu}g/ml$) inhibited, in concentration-dependent manner, the expression of tumor necrosis factor-alpha (TNF-${\alpha}$) stimulated by LPS. Conclusion: IS4 has shown an anti-inflammatory effect in RAW 264.7 cells.

• Journal of Applied Biological Chemistry
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• v.65 no.1
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• pp.23-31
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• 2022

Oxidative stress and neuroinflammation play important roles in the pathogenesis of Alzheimer's disease (AD). This study investigated the protective effects of paeoniflorin (PF) against neuronal oxidative stress and neuroinflammation in lipopolysaccharide (LPS)-induced mice. The brains of LPS-injected control group showed significantly increased neuroinflammation by activating the nuclear factor kappa B (NF-κB) pathway and increasing inflammatory mediators. However, administration of PF significantly attenuated oxidative stress by inhibiting lipid peroxidation, nitric oxide levels, and reactive oxygen species production in the brain; PF at doses of 5 and 10 mg/kg/day downregulated the expression of NF-κB pathway-related proteins and significantly decreased inflammatory mediators including inducible nitric oxide synthase and cyclooxygenase-2. Moreover, the levels of brain-derived neurotrophic factor and its receptor, tropomycin receptor kinase B, were significantly increased in PF-treated mice. Furthermore, acetylcholinesterase activity and the ration of B-cell lymphoma 2 (Bcl-2)/Bcl-2 associated X were significantly reduced by PF in the brains of LPS-induced mice, resulting in the inhibition of cholinergic dysfunction and neuronal apoptosis. Thus, we can conclude that administration of PF to mice prevents the development of LPS-induced AD pathology through the inhibition of neuronal oxidative stress and neuroinflammation, suggesting that PF has a therapeutic potential for AD.

• Restorative Dentistry and Endodontics
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• v.30 no.5
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• pp.372-384
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• 2005

The purpose of this study was to monitor the secretion of matrix metalloproteinase (MMP) and tissue inhibitor of metalloproteinase (TIMP) by human periodontal ligament (PDL) fibroblasts stimulated with Prevotella nigrescens lipopolysaccharide (LPS), and to examine the effect of calcium hydroxide treatment on P. nigrescens LPS. LPS was extracted and purified from anaerobically cultured P. nigrescens. PDL fibroblasts were stimulated by the LPS (0, 0.1, 1, 10 ${\mu}g/ml$) or LPS (10 ${\mu}g/ml$) pretreated with 12.5 mg/ml of $Ca(OH)_2$ for 3 days, for various periods of time (12, 24, 48 h). Immunoprecipitation were performed for protein level analysis of MMP-1 MMP-2 and TIMP-1. Total RNA was isolated and real-time quantitative polymerase chain reaction (PCR) was performed for quantification of MMP-1 mRNA. According to this study, the results were as follows: 1. The p개duction of MMP-1 by stimulation with P. nigrescens LPS increased in time-dependent manner, and showed maximum value at 48 h in both protein and mRNA level. But there was no dose-dependent increas. 2. MMP-2 production time-dependently increased when stimulated with 1 and 10 ${\mu}g/ml$LPS, but there was no dose-dependent increase. 3. TIMP-1 p개duction increased to 24 h, but decreased at 48 h. It increased when stimulated with 0.1 and 1${\mu}g/ml$, but suppressed at 10 ${\mu}g/ml$ .4. P. nigrescens LPS pretreated with $Ca(OH)_2$ markedly downregulated MMP-1 gene expression.

• Journal of The Korean Society of Grassland and Forage Science
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• v.33 no.4
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• pp.313-318
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• 2013

A study was conducted to determine if subacute ruminal acidosis (SARA) induced by feeding high level of non-structural carbohydrates results in increases in lipopolysaccharides (LPS) of peripheral blood in dairy cattle. In this experiment four Holstein steers, two of which having ruminal canulae with indwelling probes placed for measuring long term pH changes, were alloted into two dietary treatments in a cross-over design, where an acidogenic diet (AD) was formulated by including high amount of non-structural carbohydrates (NSC) based on corn silage and corn flake as TMR ingredients. Data for ruminal pH change and plasma LPS concentration were compared against normal diet (ND) which contained grass hay as forage and low NSC ingredients. Feeding AD for more than 14 days to animals brought about a pH change as low as less than 5.8 for more than 4 hours, which made good contrast to ND fed animals. Decreased ruminal pH also had an effect on LPS concentrations which showed significantly higher level for AD compared with ND. Therefore, plasma LPS concentration may be used as an effective indicator to verify acidosis whether it is acute or chronic. Na-bentonite and Propylene glycol, which are frequently included in dairy TMR as additives, helped decrease ruminal pH by buffering and then ultimately alleviates SARA. Therefore, it could also be helpful to lower the occurrence of laminitis which is often caused by increased blood endotoxin (LPS) concentration.

• Korean Journal of Veterinary Service
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• v.35 no.3
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• pp.191-195
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• 2012

Accumulated evidence indicate that Ginkgo biloba extract (EGb 761) acts as an antioxidant and scavenger of free radicals as well as influencing apoptotis. Earlier studies have employed the inflammatory agent lipopolysaccharide (LPS) to induce severe sepsis. In the present study, we examined whether the intraperitoneal injection of EGb 761 increases the survival rate of mice in the LPS-induced severe sepsis model. The survival rate was significantly increased by 30% in mice administered with 100 mg/kg of EGb 761 but not in mice administered with 50 mg/kg EGb 761. In addition, pre-treatment with EGb 761 increased the survival rate (30%) but post-treatment with EGb 761 did not. These results suggest that EGb 761 may have clinical potential in preventing sepsis induced mortality.

• Asian-Australasian Journal of Animal Sciences
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• v.22 no.10
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• pp.1400-1406
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• 2009

The effects of dietary copper (Cu) supplementation in broiler chickens challenged with a single injection of Salmonella typhymurium lipopolysaccharide (LPS) on the antioxidant capacity and plasma levels of ceruloplasmin (Cp) were evaluated. The broiler chickens were provided with a basal diet or diets supplemented with 8 and 50 mg/kg Cu from 1d of age. At 25d of age, 48 chickens with similar body weight were selected from each diet. Half of the chickens in each dietary treatment were injected intraperitoneally (i.p.) with LPS (1 mg/kg body weight). The other half was injected with saline, serving as the control. Body weight gain and feed consumption were significantly suppressed by LPS challenge during the first 12-h after injection, regardless of dietary Cu levels. Feed efficiency was reduced by LPS injection during the 72-h experimental period. Dietary Cu levels had no significant effect (p>0.05) on the plasma ceruloplasmin concentrations in chickens injected with saline. In contrast, high dietary level of Cu elevated plasma Cp levels in chickens with LPS challenge. Short-term LPS challenge had no significant effect on the antioxidant ability of broilers, as indicated by superoxide dismutase, ferric reducing/antioxidant power and the thiobarbituric acid reacting substances in the plasma. The result suggests that high dietary Cu level (as much as 50 mg/kg supplementation) is favorable for coping with short-term LPS challenge through upregulating plasma Cp levels.

• The Korean Journal of Physiology and Pharmacology
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• v.15 no.1
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• pp.23-29
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• 2011

Melatonin, which is the main product of the pineal gland, has well documented antioxidant and immune-modulatory effects. Macrophages produce molecules that are known to play roles in inflammatory responses. We conducted microarray analysis to evaluate the global gene expression profiles in response to treatment with melatonin in lipopolysaccharide (LPS) activated RAW 264.7 macrophage cells. In addition, eight genes were subjected to real-time reverse transcription polymerase chain reaction (RT-PCR) to confirm the results of the microarray. The cells were treated with LPS or melatonin plus LPS for 24 hr. LPS induced the up-regulation of 1073 genes and the down-regulation of 1144 genes when compared to the control group. Melatonin pretreatment of LPS-stimulated RAW 264.7 cells resulted in the down regulation of 241 genes and up regulation of 164 genes. Interestingly, among genes related to macrophage-mediated immunity, LPS increased the expression of seven genes (Adora2b, Fcgr2b, Cish, Cxcl10, Clec4n, Il1a, and Il1b) and decreased the expression of one gene (Clec4a3). These changes in expression were attenuated by melatonin. Furthermore, the results of real-time PCR were similar to those of the microarray. Taken together, these results suggest that melatonin may have a suppressive effect on LPS-induced expression of genes involved in the regulation of immunity and defense in RAW 264.7 macrophage cells. Moreover, these results may explain beneficial effects of melatonin in the treatment of various inflammatory conditions.