Ganoderma lucidum, an oriental polypore fungus and medicinal mushroom, has a long history of use for promoting health and longevity in Korea, China, and other Asian countries. This study was aimed at determining the anti-inflammatory activity and mechanism of action of Ganoderma lucidum in murine macrophage RAW 264.7 cells. Ganoderma lucidum was extracted with ethanol and freeze-dried. The anti-inflammatory effect (nitrite production) of Ganoderma lucidum extracts was tested using a nitric oxide (NO) colorimetric assay. Semi-quantitative reverse transcription polymerase chain reaction (RT-PCR) was performed to quantify the mRNA expression of cytokines including tumor necrosis factor-${\alpha}$ ($TNF-{\alpha}$), interleukin $(IL)-1{\beta}$, and IL-6. Western blotting was performed to measure the expression levels of inflammation-related proteins, such as inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2), nuclear factor kappa B ($NF-{\kappa}B$) p65, and phosphorylated $NF-{\kappa}B$ p65. The NO colorimetric assay showed that NO production increased with the treatment of lipopolysaccharide in (LPS)-activated RAW 264.7 macrophages and decreased with the cotreatment of Ganoderma lucidum extracts and LPS. Ganoderma lucidum extracts repressed the mRNA expressions of cytokines, which were increased after the LPS treatment. In addition, Ganoderma lucidum extracts inhibited the LPS-induced expression of iNOS and COX-2 and the LPS-induced phosphorylation of $NF-{\kappa}B$ p65. These results suggest that the Ganoderma lucidum extracts exert an anti-inflammatory activity by inhibiting $NF-{\kappa}B$ related proteins and cytokines.
Han, A Reum;Yang, Ji Woong;Na, Jung-Min;Choi, Soo Young;Cho, Sung-Woo
BMB Reports
/
v.52
no.7
/
pp.439-444
/
2019
Although hypoxic/ischemic injury is thought to contribute to the incidence of Alzheimer's disease (AD), the molecular mechanism that determines the relationship between hypoxia-induced ${\beta}$-amyloid ($A{\beta}$) generation and development of AD is not yet known. We have now investigated the protective effects of N,4,5-trimethylthiazol-2-amine hydrochloride (KHG26702), a novel thiazole derivative, on oxygen-glucose deprivation (OGD)-reoxygenation (OGD-R)-induced $A{\beta}$ production in SH-SY5Y human neuroblastoma cells. Pretreatment of these cells with KHG26702 significantly attenuated OGD-R-induced production of reactive oxygen species and elevation of levels of malondialdehyde, prostaglandin $E_2$, interleukin 6 and glutathione, as well as superoxide dismutase activity. KHG26702 also reduced OGD-R-induced expression of the apoptotic protein caspase-3, the apoptosis regulator Bcl-2, and the autophagy protein becn-1. Finally, KHG26702 reduced OGD-R-induced $A{\beta}$ production and cleavage of amyloid precursor protein, by inhibiting secretase activity and suppressing the autophagic pathway. Although supporting data from in vivo studies are required, our results indicate that KHG26702 may prevent neuronal cell damage from OGD-R-induced toxicity.
Background: Frequent overdose of paracetamol (APAP) has become the major cause of acute liver injury. The present study was designed to evaluate the potential protective effects of ginsenoside Rk1 on APAP-induced hepatotoxicity and investigate the underlying mechanisms for the first time. Methods: Mice were treated with Rk1 (10 mg/kg or 20 mg/kg) by oral gavage once per d for 7 d. On the 7th d, allmice treated with 250mg/kg APAP exhibited severeliverinjury after 24 h, and hepatotoxicitywas assessed. Results: Our results showed that pretreatment with Rk1 significantly decreased the levels of serum alanine aminotransferase, aspartate aminotransferase, tumor necrosis factor, and interleukin-$1{\beta}$ compared with the APAP group. Meanwhile, hepatic antioxidants, including superoxide dismutase and glutathione, were elevated compared with the APAP group. In contrast, a significant decrease in levels of the lipid peroxidation product malondialdehyde was observed in the ginsenoside Rk1-treated group compared with the APAP group. These effects were associated with a significant increase of cytochrome P450 E1 and 4-hydroxynonenal levels in liver tissues. Moreover, ginsenoside Rk1 supplementation suppressed activation of apoptotic pathways by increasing Bcl-2 and decreasing Bax protein expression levels, which was shown using western blotting analysis. Histopathological observation also revealed that ginsenoside Rk1 pretreatment significantly reversed APAP-induced necrosis and inflammatory infiltration in liver tissues. Biological indicators of nitrative stress, such as 3-nitrotyrosine, were also inhibited after pretreatment with Rk1 compared with the APAP group. Conclusion: The results clearly suggest that the underlying molecular mechanisms in the hepatoprotection of ginsenoside Rk1 in APAP-induced hepatotoxicity may be due to its antioxidation, antiapoptosis, anti-inflammation, and antinitrative effects.
You, Bo Ram;Yoo, Jae-Myung;Baek, Seong Yeon;Kim, Mee Ree
Nutrition Research and Practice
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v.13
no.3
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pp.189-195
/
2019
BACKGROUND/OBJECTIVES: Although aged black garlic has various biological activities such as anti-allergy, anti-inflammation and neuroprotection, effect of aged black garlic on chemically contact dermatitis is unclarified. MATERIALS/METHODS: To evaluate anti-dermatitic activity of aged black garlic extract, we investigated effects of a fraction of aged black garlic extract (BG10) on both in vivo and in vitro. RESULTS: BG10 almost inhibited formation of nitric monoxide and interleukin-6 (IL-6; $IC_{50}$, $7.07{\mu}g/mL$) at $25{\mu}g/mL$, and dose-dependently reduced production of tumor necrosis $factor-{\alpha}$ ($TNF-{\alpha}$; $IC_{50}$, $52.07{\mu}g/mL$) and prostaglandin $E_2$ ($IC_{50}$, $38.46{\mu}g/mL$) in lipopolysaccharide-stimulated RAW264.7 cells. In addition, BG10 significantly inhibited the expression of inducible nitric oxide synthase, cyclooxygenase-2 and nuclear $NF-{\kappa}B$, and improved that of cytosolic levels of $NF-{\kappa}B$ and $I{\kappa}B{\alpha}$ in the cells. Consistent with in vitro studies, BG10 (0.5 mg/mL) not only reduced ear edema but also suppressed the formation of IL-6 and $TNF-{\alpha}$ induced by 12-O-tetradecanoylphorbol-13-acetate in ear tissues of mice. CONCLUSIONS: These findings suggest BG10 has anti-dermatitic activity through inhibiting activation of macrophages. Therefore, such effects of BG10 may provide information for the application of aged black garlic for prevention and therapy of contact dermatitis.
Kim, Nan-Ee;Kim, Yeon-Soo;Jee, Seon-Young;Hwangbo, Min
The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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v.32
no.2
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pp.11-23
/
2019
Objectives : The purpose of this study is to investigate the anti-inflammatory effect of Cheongsimyanggyeoksan(CYS) water extract in vitro and in vivo. Methods : To evaluate the anti-inflammatory effect of CYS, Raw 264.7 cells were pretreated with $3-300{\mu}g/m{\ell}$ of CYS for 1h, and then exposed to $1{\mu}g/m{\ell}$ of LPS. The cell viability was detected by MTT assay. Productions of nitric oxide(NO) and pro-inflammatory cytokines were measured in culture media. Protein levels of inducible nitric oxide synthase(iNOS) and Nuclear factor-${\kappa}$B($NF-{\kappa}B$) were determined by immunoblot analysis. The effect of CYS on acute inflammation in vivo was evaluated thorugh measurment of carrageenan-induced paw edema. Results : In vitro study, cell viability assay CYS treatment of $3-300{\mu}g/m{\ell}$ has no cytotoxicity in Raw 264.7 cells. LPS-induced NO production was significantly inhibited by pretreatment with $30-300{\mu}g/m{\ell}$ of CYS. Production of interleukin-6, -$1{\beta}$ and tumor necrosis factor-${\alpha}$ by LPS were significantly decreased by CYS pretreatment. CYS reduced LPS-mediated iNOS expression. Moreover, CYS significantly induced $I-{\kappa}B{\alpha}$ expression and reduced $NF-{\kappa}B$ expression. In vivo study, CYS significantly reduced the increases of paw swelling. Conclusions : These results suggest the clinical basis of CYS for the treatment of inflammatory diseases.
Nho, Jong Hyun;Lee, Hyeun Joo;Lee, E Na;Woo, Kyeong Wan;Jang, Ji Hun;Kim, Sun Ra;Cho, Hyun Woo;Noh, Se Eung;Jung, Ho Kyung
Korean Journal of Medicinal Crop Science
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v.28
no.6
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pp.471-480
/
2020
Background: The roots of Cirsium japonicum var. ussuriense (RCJ) have been used as traditional medicine in Korea for hematuria and hematemesis. These extracts exert anti-oxidative and anti-inflammatory effects by scavenging for free radical and regulating the inflammatory response. However, the effect of RCJ on rheumatoid arthritis (RA) has not been elucidated. Thus, we evaluated the water extract of RCJ (WRCJ) using type II collagen-induced RA models. Methods and Results: RA was induced by immunization with type II collagen. All experimental materials were orally administered daily for three weeks. The positive control group was administered with 0.2 mg/kg methotrexate (n = 7), while the experimental group was administered with WRCJ (100 or 500 mg/kg, n = 7). Serum levels of TNF-alpha, Interleukin 6 (IL-6), and type II collagen IgG (CII) were measured using ELISA. Administration of 500 mg/kg WRCJ decreased the levels of TNF-alpha, IL-6, and CII. Moreover, WRCJ treatment diminished swelling of hind legs and infiltration of inflammatory cells in RA models' synovial membrane. Conclusions: These results indicate that WRCJ could improve RA, reduce inflammatory indicators and synovial inflammation. However, further experiments are required to determine how WRCJ can influence the signal transduction pathway in RA.
Yoon, Hyun Suk;Kim, Yong Tae;Shim, Bong Suk;Yoon, Hana
Urogenital Tract Infection
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v.13
no.3
/
pp.51-57
/
2018
Purpose: The effects of Lactobacillus fermentation extract (LFE) on cystitis induced by Escherichia coli lipopolysaccharide (LPS) in the mouse bladder were investigated by pathological analyses and measurement of the levels of tumor necrosis factor-alpha ($TNF-{\alpha}$) and interleukin-18 (IL-18). Materials and Methods: LFE was administered orally ($5{\mu}g/L$) to mice for 10 days after which the study group (n=12) received transurethral injection of $5{\mu}g/L$ LPS. The bladder tissue was then harvested after 24 hours and subjected to hematoxylin and eosin staining. A semi-quantitative score was used to evaluate inflammation (bladder inflammation index, BII). $TNF-{\alpha}$ immunohistochemical staining and multiplex cytokine assays were also performed. $TNF-{\alpha}$ and IL-18 levels were determined. The results were compared with those of the control group (n=12). Results: The BII in the control and study groups was $2.7{\pm}0.5$ and $1.1{\pm}0.7$, respectively, with the control group scores differing significantly from the study group scores (p<0.001). $TNF-{\alpha}$ immunohistochemical staining results were similar. The $TNF-{\alpha}$ levels determined by the multiplex cytokine assay were $2.82{\pm}1.35pg/mg$ and $1.55{\pm}0.56pg/mg$ for the control and study groups, respectively, and the difference between these groups was statistically significant (p=0.007). Conclusions: Oral administration of LFE appears to have a preventive effect against the inflammatory responses and $TNF-{\alpha}$ expression induced by transurethral instillation of LPS in the mouse bladder. Further studies are required to determine the clinical application of this finding.
Journal of Physiology & Pathology in Korean Medicine
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v.35
no.1
/
pp.15-21
/
2021
Donggwaja (Benincasae Semen), the seed of Benincasa hispida (Thunb.) Cogn., has been used in Korean traditional medicine to control the body heat and water retention caused by various diseases. Both the symptoms targeted by the herbal medicine in clinic and studies with disease mouse models support the potential anti-inflammatory effect of Donggwaja. However, it is less understood how Donggwaja exerts its possible anti-inflammatory effect. Here, we present evidence that Donggwaja suppresses macrophage inflammatory reactions via expressing tumor necrosis factor a-induced protein 3 (TNFAIP3 or A20) and suppressing NF-kB activity. The ethanol extract of Donggwaja (EED) showed no toxicity when added to RAW 264.7 cells less than 100mg/ml. When treating the cells for 16 h, EED significantly suppressed the nuclear localization of NF-kB, suggesting that EED suppresses NF-kB activity. Concordantly, a semi-quantitative RT-PCR analysis showed that EED decreased the expression of prototypic pro-inflammatory cytokines, such as tumor necrosis factor (TNF)-a, IL(interleukin)-6, and IL-1b. EED induced in RAW 264.7 cells the expression of A20, a ubiquitin modulator that suppresses inflammatory signaling cascades initiated from TLR4 and TNF and IL-1 receptors, while not affecting the induction of Nrf2, an anti-inflammatory factor that could suppress the effect of NF-kB. These results suggest that EED exerts its suppressive effect on inflammation, at least in part, by expressing anti-inflammatory factor A20 and suppressing pro-inflammatory factor NF-kB activity.
In this study, the survival capacity (acid and bile salt tolerance, and adhesion to gut epithelial cells) and probiotic properties (enzyme activity-inhibition and anti-inflammatory activities, inhibition of adipogenesis, and stress hormone level reduction) of Lactiplantibacillus plantarum LRCC5314, isolated from kimchi (Korean traditional fermented cabbage), were investigated. LRCC5314 exhibited very stable survival at ph 2.0 and in 0.2% bile acid with 89.9% adhesion to Caco-2 intestinal epithelial cells after treatment for 2 h. LRCC5314 also inhibited the activities of α-amylase and α-glucosidase, which are involved in elevating postprandial blood glucose levels, by approximately 72.9% and 51.2%, respectively. Treatment of lipopolysaccharide (LPS)-stimulated RAW 264.7 cells with the LRCC5314 lysate decreased the levels of the inflammatory factors nitric oxide, tumor necrosis factor (TNF-α), interleukin (IL)-1β, and interferon-γ by 88.5%, 49.3%, 97.2%, and 99.8%, respectively, relative to those of the cells treated with LPS alone. LRCC5314 also inhibited adipogenesis in differentiating preadipocytes (3T3-L1 cells), showing a 14.7% decrease in lipid droplet levels and a 74.0% decrease in triglyceride levels, as well as distinct reductions in the mRNA expression levels of adiponectin, FAS, PPAR/γ, C/EBPα, TNF-α, and IL-6. Moreover, LRCC5314 reduced the level of cortisol, a hormone with important effect on stress, by approximately 35.6% in H295R cells. L. plantarum LRCC5314 is identified as a new probiotic with excellent in vitro multifunctional properties. Subsequent in vivo studies may further demonstrate its potential as a functional food or pharmabiotic.
Ranaweera, Sachithra S.;Dissanayake, Chanuri Y.;Natraj, Premkumar;Lee, Young Jae;Han, Chang-Hoon
Journal of Veterinary Science
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v.21
no.6
/
pp.91.1-91.15
/
2020
Background: Sulforaphane (SFN) is an isothiocyanate compound present in cruciferous vegetables. Although the anti-inflammatory effects of SFN have been reported, the precise mechanism related to the inflammatory genes is poorly understood. Objectives: This study examined the relationship between the anti-inflammatory effects of SFN and the differential gene expression pattern in SFN treated ob/ob mice. Methods: Nitric oxide (NO) level was measured using a Griess assay. The inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) expression levels were analyzed by Western blot analysis. Pro-inflammatory cytokines (tumor necrosis factor [TNF]-α, interleukin [IL]-1β, and IL-6) were measured by enzyme-linked immunosorbent assay (ELISA). RNA sequencing analysis was performed to evaluate the differential gene expression in the liver of ob/ob mice. Results: The SFN treatment significantly attenuated the iNOS and COX-2 expression levels and inhibited NO, TNF-α, IL-1β, and IL-6 production in lipopolysaccharide (LPS)-stimulated RAW 264.7 cells. RNA sequencing analysis showed that the expression levels of 28 genes related to inflammation were up-regulated (> 2-fold), and six genes were down-regulated (< 0.6-fold) in the control ob/ob mice compared to normal mice. In contrast, the gene expression levels were restored to the normal level by SFN. The protein-protein interaction (PPI) network showed that chemokine ligand (Cxcl14, Ccl1, Ccl3, Ccl4, Ccl17) and chemokine receptor (Ccr3, Cxcr1, Ccr10) were located in close proximity and formed a "functional cluster" in the middle of the network. Conclusions: The overall results suggest that SFN has a potent anti-inflammatory effect by normalizing the expression levels of the genes related to inflammation that were perturbed in ob/ob mice.
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