Hexane Fraction from Sargassum fulvellum Inhibits Lipopolysaccharide-Induced Inducible Nitric Oxide Synthase Expression in RAW 264.7 Cells via NF-κB Pathways

2013 ◽  
Vol 41 (03) ◽  
pp. 565-584 ◽  
Author(s):  
Wi-Gyeong Gwon ◽  
Min-Sup Lee ◽  
Jong-Soon Kim ◽  
Jae-Il Kim ◽  
Chi-Won Lim ◽  
...  

Sargassum fulvellum (Turner) C. Agardh has been used to treat various inflammatory diseases, including lump, dropsy, swollen and painful scrotum, and urination problems for several centuries with no side effects. This study aims to investigate the anti-inflammatory effect of the hexane fraction of S. fulvellum (HFS) in lipopolysaccharide (LPS)-stimulated RAW 264.7 cells and phorbol 12-myristate 13-acetate (PMA)-induced mouse-ear edema. The anti-inflammatory activity of HFS in LPS-stimulated RAW 264.7 cells was investigated by assessing the inhibition of nitric oxide (NO) and pro-inflammatory cytokine production during Griess reaction and enzyme-linked immunosorbent assay (ELISA), respectively. The molecular mechanisms that underlie the anti-inflammatory action of HFS were investigated by analyzing the activation of transcription factor and its upstream signaling proteins. Additionally, an in vivo study of the anti-inflammatory effect of HFS was carried out using PMA-induced mouse-ear edema. HFS inhibited LPS-induced NO production in a dose-dependent manner and suppressed the expression of inducible NO synthase (iNOS) in the RAW 264.7 cells. Further, HFS reduced the production of pro-inflammatory cytokines in the LPS-stimulated RAW 264.7 cells. HFS significantly inhibited LPS-induced nuclear factor kappa B (NF-κB) transcriptional activity and NF-κB translocation into the nucleus by preventing degradation of inhibitor κB-α. Moreover, HFS inhibited the activation of Akt and mitogen-activated protein kinases (MAPKs) in the LPS-stimulated RAW 264.7 cells. Furthermore, HFS suppressed PMA-induced mouse-ear edema. The above data indicate that the anti-inflammatory effects of HFS on LPS-stimulated cells are associated with the suppression of NF-κB through the inhibition of MAPKs and Akt phosphorylation.

2016 ◽  
Vol 44 (3) ◽  
pp. 236-245 ◽  
Author(s):  
Bo-Kyeong Kang ◽  
Min-Ji Kim ◽  
Da-Hyun Jeong ◽  
Koth-Bong-Woo-Ri Kim ◽  
Nan-Young Bae ◽  
...  

2017 ◽  
Vol 45 (2) ◽  
pp. 101-109 ◽  
Author(s):  
Min-Ji Kim ◽  
Nan-Young Bae ◽  
Hyeun-Deok Choi ◽  
Koth-Bong-Woo-Ri Kim ◽  
Sun-Hee Park ◽  
...  

2018 ◽  
Vol 773 ◽  
pp. 360-364 ◽  
Author(s):  
Sroisiri Thaweboon ◽  
Boonyanit Thaweboon ◽  
Rattiporn Kaypetch

This study aimed to investigate the antifungal, anti-inflammatory and cytotoxic effects of Zingiber cassumunar gel. The gel was prepared from essential oil of Zingiber cassumunar rhizome by the Thailand Institute of Scientific and Technological Research. Antifungal activity of the gel was firstly determined by the well diffusion method against Candida albicans ATCC 10238 and candida strain isolated from the patient’s lesion. Then, the Agar overlay technique was used to test the cytotoxicity of Z. cassumunar gel on mouse fibroblasts (ATCC clone 929) according to ISO 7405. For anti-inflammatory effect of the gel, TPA (carrageenan lambda type IV, 12-O-tetradecanoylphorbol-13- acetate)-induced mouse ear edema method was used. The results of well diffusion showed that Z. cassumunar gel was quite a potent antifungal agent against both strains of tested C. albicans with inhibition zones of 12-13 mm. In the cytotoxicity test, the gel exhibited no toxicity to cell culture. In addition, topical administration of Z. cassumunar gel could decrease mouse ear edema induced by TPA. At 30 and 60 min-time points, Z. cassumunar gel showed higher anti-inflammatory activity than triamcinolone which was used as reference anti-inflammatory drug. In conclusion, gel prepared from Z. cassumunar oil showed antifungal activity against both strains of C. albicans. In addition, its anti-inflammatory effect was demonstrated within 30 min by the TPA-induced mouse ear edema model. The gel was non-toxic to cell culture after 24-h incubation. Further studies are needed to clarify the safety and benefit of this gel for clinical use in the treatment of candidal infection and inflammation.


2017 ◽  
Vol 45 (2) ◽  
pp. 110-117 ◽  
Author(s):  
Min-Ji Kim ◽  
Min-Ju Kim ◽  
Koth Bong Woo Ri Kim ◽  
Sun Hee Park ◽  
Hyeun Deok Choi ◽  
...  

Molecules ◽  
2020 ◽  
Vol 25 (18) ◽  
pp. 4058 ◽  
Author(s):  
Hyung Jin Lim ◽  
Seon Gyeong Bak ◽  
Eun Jae Park ◽  
Sae-Kwang Ku ◽  
Soyoung Lee ◽  
...  

Many studies have reported the biological activities of retrofractamide C (RAC). However, few studies have investigated the anti-inflammatory effect of RAC. In the present study, we investigated the anti-inflammatory effect of RAC using lipopolysaccharide (LPS)-induced J774A.1 cells and a xylene-induced mouse ear edema model. Treatment with RAC decreased LPS-induced nitric oxide (NO) and prostaglandin E2 (PGE2) secretion and inducible NO synthase (iNOS) and cyclooxygenase 2 (COX2) protein expression. It also downregulated the LPS-induced production of interleukin-1β (IL-1β) and interleukin-6 (IL-6) but not tumor necrosis factor α (TNF-α). In the LPS-induced signaling pathway, RAC inhibited the phosphorylation of extracellular signal-regulated kinase (ERK) and nuclear factor kappa light chain enhancer of activated B cells (NF-κB) but not c-Jun N-terminal kinase (JNK) or p38. In a xylene-induced mouse ear edema model, RAC treatment alleviated edema formation and inflammatory cell infiltration. In conclusion, the present study indicates that RAC has the potential to have anti-inflammatory effects and could be a prospective functional food.


2018 ◽  
Vol 19 (7) ◽  
pp. 2027 ◽  
Author(s):  
Jingyu He ◽  
Xianyuan Lu ◽  
Ting Wei ◽  
Yaqian Dong ◽  
Zheng Cai ◽  
...  

Hedyotis diffusa is a folk herb that is used for treating inflammation-related diseases in Asia. Previous studies have found that iridoids in H. diffusa play an important role in its anti-inflammatory activity. This study aimed to investigate the anti-inflammatory effect and potential mechanism of five iridoids (asperuloside (ASP), asperulosidic acid (ASPA), desacetyl asperulosidic acid (DAA), scandoside methyl ester (SME), and E-6-O-p-coumaroyl scandoside methyl ester (CSME)) that are presented in H. diffusa using lipopolysaccharide (LPS)—induced RAW 264.7 cells. ASP and ASPA significantly decreased the production of nitric oxide (NO), prostaglandin E2 (PGE2), tumor necrosis factor-α (TNF-α), and interleukin-6 (IL-6) in parallel with the inhibition of inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2), TNF-α, and IL-6 mRNA expression in LPS-induced RAW 264.7 cells. ASP treatment suppressed the phosphorylation of the inhibitors of nuclear factor-kappaB alpha (IκB-α), p38, extracellular signal-regulated kinase (ERK), and c-Jun N-terminal kinase (JNK). The inhibitory effect of ASPA was similar to that of ASP, except for p38 phosphorylation. In summary, the anti-inflammatory effects of ASP and ASPA are related to the inhibition of inflammatory cytokines and mediators via suppression of the NF-κB and mitogen-activated protein kinase (MAPK) signaling pathways, which provides scientific evidence for the potential application of H. diffusa.


2018 ◽  
Vol 13 (5) ◽  
pp. 1934578X1801300
Author(s):  
You Chul Chung ◽  
Sung-Min Park ◽  
Jin Hwa Kim ◽  
Geun Soo Lee ◽  
Jung No Lee ◽  
...  

The Trifolium pratense L. (red clover), which blossoms, leaves and stems can be used as medicines for treatment of burns, skin diseases, diabetes and other diseases. Recently study shown that pratol (7-hydroxy-4-methoxyflavone), an O-methylated flavone in T. pratense has been evaluated to induce melanogenesis in B16F10 melanoma cells. However, the anti-inflammatory effect of pratol has not been reported. In this study, we investigated the effects of pratol on anti-inflammation. We also studied the mechanism of action of pratol in LPS-stimulated RAW 264.7 cells. The cells were treated with various concentration of pratol (25, 50, or 100 μM) and 25 μM ammonium pyrrolidinedithiocarbamate (APDC) was used as control. The results in LPS-stimulated RAW 264.7 cells showed that pratol significantly reduced nitric oxide (NO) and prostaglandin E2 (PGE2) production without any cytotoxic. In addition, pratol strongly decreased the expression of inducible nitric oxide synthase (iNOS) and cyclooygenase (COX-2). Furthermore, pratol reduced proinflammatory cytokines such as tumour necrosis factor (TNF)-α, interleukin (IL)-1β and IL-6. We also found that pratol strongly inhibited activation of nuclear factor kappa B (NF-κB) by reducing the p65 phosphorylation and protecting inhibitory factor kappa B alpha (IκBα) degradation. The results suggest that, pratol may be used to treat or prevent inflammatory diseases such as dermatitis, arthritis, cardiovascular and cancer.


2013 ◽  
Vol 5 (3) ◽  
pp. 1217-1225 ◽  
Author(s):  
Hyeong-Seon Lee ◽  
Dinesh Bilehal ◽  
Gyeong-Seon Lee ◽  
Deok-Seon Ryu ◽  
Hyun-Kyung Kim ◽  
...  

2013 ◽  
Vol 2013 ◽  
pp. 1-11 ◽  
Author(s):  
Min-Ji Bak ◽  
Van Long Truong ◽  
Hey-Sook Kang ◽  
Mira Jun ◽  
Woo-Sik Jeong

In the present study, the anti-inflammatory effect and underlying mechanisms of wild grape seeds procyanidins (WGP) were examined using lipopolysaccharide- (LPS-) stimulated RAW 264.7 cells. We used nitric oxide (NO) and prostaglandin E2(PGE2) and reactive oxygen species (ROS) assays to examine inhibitory effect of WGP and further investigated the mechanisms of WGP suppressed LPS-mediated genes and upstream expression by Western blot and confocal microscopy analysis. Our data indicate that WGP significantly reduced NO, PGE2, and ROS production and also inhibited the expression of proinflammatory mediators such as inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) protein expressions. Consistently, WGP significantly reduced LPS-stimulated expression of proinflammatory cytokines such as tumor necrosis factorα(TNF-α) and interleukin- (IL-) 1β. Moreover, WGP prevented nuclear translocation of nuclear factor-κB (NFκB) p65 subunit by reducing inhibitoryκB-α(IκBα) and NFκB phosphorylation. Furthermore, we found that WGP inhibited LPS-induced phosphorylation of p38 mitogen-activated protein kinase (MAPK). Taken together, our results demonstrated that WGP exerts potent anti-inflammatory activity through the inhibition of iNOS and COX-2 by regulating NFκB and p38 MAPK pathway.


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