Reyes, Alisha Wehdnesday Bernardo;Vu, Son Hai;Huy, Tran Xuan Ngoc;Min, Wongi;Lee, Hu Jang;Chang, Hong Hee;Lee, John Hwa;Kim, Suk
Journal of Microbiology and Biotechnology
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v.30
no.5
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pp.642-648
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2020
In this study, we investigated the effects of linoleic acid (LA) treatment on Brucella abortus infection in professional phagocyte RAW264.7 cells, particularly during the pathogen's invasion and intracellular growth in these cells, as well as in murine model BALB/c mice focusing on bacterial splenic proliferation and immunoregulatory activities. LA inhibited the growth of Brucella in a dose- and time-dependent manner. The ability of the pathogen to enter the phagocytes was inhibited as was its survival within these cells. This was accompanied by increased nitrite accumulation in these cells at 24 h post-infection. The concentration of LA used in the present study did not affect the total body weight or liver function of the mice. During Brucella infection, the total splenic weight of these animals was not changed; rather, resistance to bacterial proliferation was enhanced in the spleen. Furthermore, mice treated with LA displayed elevated levels of IL-12 and IFN-γ but reduced levels of IL-10 during infection. The findings in this study showed the regulatory role of LA against B. abortus infection suggesting its potential use in designing intervention strategy for brucellosis.
Kim, Joong-Gon;Lee, Soo-Hyun;Lee, Jae-Woo;B.S. Kwon;Kang, Chang-Yuil
Proceedings of the Korean Society of Applied Pharmacology
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1995.04a
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pp.82-82
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1995
4-lBB molecule is expressed on the surface of activated CD4$\^$+/ and CD8$\^$+/ T cells. We generated a panel of anti-4-1 B5 murine mAbs using a fusion protein consisting of the extracellular domain of human 4-1 BB fused to Glutathione S-transferase. The binding activity against cell surface 4-1 BB molecule was assessed by flow cytometry analysis. These studies showed that several anti-4-1 BB mAbs bound to 10-30% of CD4$\^$+/ and CD8$\^$+/T cells in PHA or Con A stimulated PBLs, although these mAbs interacted with only, l-2% of CD4$\^$+/ and CD8$\^$+/ T cells in normal PBLs, indicating the specificity of mAbs to the 4-l BB molecule on activated CD4$\^$+/ and CD8$\^$+/ T cells. Next, we examined the effect of an anti-4-l BB mAb (4B4-1-1) on allogeneic mixed lymphocyte reactions (MLRs). The data indicated that the antibody significantly inhibited the proliferative response at higher concentrations. When tested with several T cell mitogens, the antibody had no stimulatory or inhibitory effects on the mitogen-mediated T cell proliferation. These data suggest that 4-1 BB molecule may play a role in the regulation of antigen-mediated immune response.
Kim, Beom-Jun;Kim, Jeong-Ha;Kim, Hyun-Pyo;Heo, Moon-Young
Journal of the Society of Cosmetic Scientists of Korea
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v.24
no.3
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pp.17-23
/
1998
Inner nutshell of Castanea mollisima BL (chestnut) has been used as an anti-aging and anti-wrinkle agent from the ancient time in east Asia. In order to develop new anti-aging and anti-wrinkle, ethanolic extract of inner nutshell of Castanea mollisima BL (Cor-285) was prepared and various biological activities were evaluated. Cor-285 showed potent antioxidant activity, Especially, Cor-285 possessed potent free radical scavenging activity in vitro (IC50:7.6 g/ml) compared to gallic acid (IC50:12.5 g/ml), Cor-285 showed the preventive effect against UV-induced cytotoxicity of fibroblast at concentration of 25-250 g/ml. When Cor-285 was evaluated for its anti-allergic activity, it effectively inhibited histamine release from mast cells induced by compound 48/80 (86% inhibition at 10 mg/ml). The inhibitory activity was stronger than that of glycyrrhiznate. Cor-285 also showed in vivo inhibition against delayed hypersensitivity as well as croton-oil induced ear edema in mice when topically applied These results strongly suggest that Cor-285 may reduce immunoregulatory 1 inflammatory skin trouble. From the attempts to isolate the constituents, citropten (simple coumarin) and ellagic acid, a well known radical scavenger, were isolated. In a clinical trial of twenty healthy volunteers with aged skin,6 weeks application of Cor-285 (3% cream) decreased wrinkle about 26% and increased moisturizing 20% on the skin. All of these results indicate that Cor-285 may be an effective anti-aging and anti-wrinkle agent.
The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
/
v.28
no.4
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pp.92-110
/
2015
Objectives : The water extract of Bowon-tang composited with thePanax, AstragalusandGlycyrrhiza Radixhas been traditionally used for treatment of a sickly child and smallpox in oriental medicine. However, little is known about the regulatory effects of Bowon-tang on the production, expression and activity of immune mediators [nitric oxide, prostaglandin E2, inducible nitric oxide synthetase, cyclooxygenase-2], the macrophage activation factor production, the proliferation, subset expression, the killing activity, and the capping in immune cells.Methods : In this study, we investigated the effects of water extracts from Bowon-tang,Panax, AstragalusorGRin mouse immune cells or human Jurkat T cells. Each extract (25-200 ㎍/㎖)perse had no cytotoxic effect in unstimulated macrophages, but concentration-dependently regulated NO and PGE2production, iNOS expression, and COX-2 activity in mouse peritoneal macrophages with MAF stimulation. These regulatory effects were synergistically increased by their combination (Bowon-tang).Results : The extract of Bowon-tang concentration-dependently regulated T cell proliferation, CD4+and CD8+expression, and NK killing activity in mouse splenocytes and capping in Jurkat T cells.Conclusions : These results suggest that the water extract of Bowon-tang composited with thePanax, AstragalusandGRmay be useful for therapeutic drugs against a sickly constitution and immune diseases, probably by regulating the production of immune mediators.
Kwon, Da Hye;Cheon, Ji Min;Choi, Eun-Ok;Jeong, Jin Woo;Lee, Ki Won;Kim, Ki Young;Kim, Sung Goo;Kim, Suhkmann;Hong, Su Hyun;Park, Cheol;Hwang, Hye-Jin;Choi, Yung Hyun
Journal of Cancer Prevention
/
v.21
no.3
/
pp.144-151
/
2016
Background: Immunoregulatory elements have emerged as useful immunotherapeutic agents against cancer. In traditional medicine, Mori folium, the leaf of Morus alba L. (Moraceae), has been used for various medicinal purposes; however, the immunomodulatory effects have not been fully identified. We evaluated the immunoenhancing potential of water extract of Mori folium (WEMF) in murine RAW264.7 macrophages. Methods: RAW264.7 cells were treated with WEMF for 24 hours and cell viability was detected by an MTT method. Nitric oxide (NO) levels in the culture supernatants were assayed using Griess reagent. The productions of prostaglandin $E_2$ ($PGE_2$) and immune-related cytokines was measured using ELISA detection kits. The mRNA and protein expression levels of Inducible NO synthase, COX-2, and cytokines were assayed by reverse transcription-PCR and Western blotting, respectively. The effect of WEMF on phagocytic activity was measured using a Phagocytosis Assay Kit. Results: WEMF significantly stimulated the production of NO and $PGE_2$ as immune response parameters at noncytotoxic concentrations, which was associated with the increased expression of inducible NO synthase and COX-2. The release and expression of cytokines, such as $TNF-{\alpha}$, interleukin $(IL)-1{\beta}$, IL-6, and IL-10, were also significantly increased in response to treatment with WEMF. Moreover, WEMF promoted the macrophagic differentiation of RAW264.7 cells and the resulting phagocytosis activity. Conclusions: WEMF has the potential to modulate the immune function by regulating immunological parameters. Further studies are needed to identify the active compounds and to support the use of WEMF as an immune stimulant.
Biflavonoid is one of unique classes of naturally-occurring bioflavonoid. Previously, certain biflavonoids were found to possess the inhibitory effects on phospholipase $A_2$ activity and lymphocytes $ proliferation^1$ suggesting their anti-inflammatory/immunoregulatory potential. In this study, effects of several biflavonoids on arachidonic acid release from rat peritoneal macrophages were investigated, because arachidonic acid released from the activated macrophages is one of the indices of inflammatory conditions. When resident peritoneal macrophages labeled with $[^{3}H]$arachidonic acid were activated by phorbol 12-myristate 13-acetate(PMA) or calcium ionophore, A23187, radioactivity released in the medium was increased approximately 4.1-7.3 fold after 120 min incubation compared to the spontaneous release in the control incubation. In this condition, biflavonoids (10 uM) such as ochnaflavone, ginkgetin and isoginkgetin, showed inhibition of arachidonate release from macrophages activated by PMA (32.5-40.0% inhibition) or A23187 (21.7-41.7% inhibition). Amentoflavone showed protection only against PMA-induced arachidonate release, while apigenin, a monomer of these biflavonoids, did not show the significant inhibition up to 10 uM. Staurosporin (1 uM), a protein kinase C inhibitor, showed an inhibitory effect only against PMA-induced arachidonate release (96.8% inhibition). Inhibition of arachidonate release from the activated macrophages may contribute to an anti-inflammatory potential of biflavonoids in vivo.
Kim, Min Ju;Jo, Hee Geun;Ramakrishna, Chilakala;Lee, Seung-Jae;Lee, Dong-Sung;Cheong, Sun Hee
Korean Journal of Exercise Nutrition
/
v.25
no.4
/
pp.45-53
/
2021
[Purpose] In this study, we investigated whether a 70% ethanolic (EtOH) extract of Sargassum horneri had antioxidant and anti-inflammatory effects in lipopolysaccharide (LPS)-stimulated macrophage-like RAW 264.7 cells. [Methods] The proximate composition, fatty acids, amino acids, and dietary fiber of S. horneri, various biologically active compounds, and antioxidant activity were analyzed. [Results] The DPPH and ABTS free radical scavenging activities, as well as the reduction power, of the S. horneri extract used here were significantly increased in a concentration-dependent manner. This indicates that S. horneri contains bioactive compounds, such as phenols and flavonoids, that have excellent antioxidant activity. The cellular viability and metabolic activity results confirmed that the extract had no discernible toxicity at concentrations up to 100 ㎍/mL. The levels of nitrites and cytokines (PGE2, TNF-α and IL-6), which mediate pro-inflammatory effect, were significantly inhibited by treatment with either 50 or 100 ㎍/mL S. horneri extract, whereas that of IL-1β was significantly inhibited by treatment with 100 ㎍/mL of the extract. Similarly, the expression of iNOS and COX-2 proteins also decreased according to 50 or 100 ㎍/mL extract concentrations. NF-κB binding to DNA was also significantly inhibited by treatment with 100 ㎍/mL of extract. [Conclusion] These results suggest that 70% EtOH extracts of S. horneri can relieve inflammation caused by disease or high intensity exercise.
The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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v.21
no.3
/
pp.1-9
/
2008
Objective : Prolonged use of systemic corticosteroids negatively impacts skin barrier function. Corticosteroids have a major role in the practical management of many diseases, so it is necessary to find the drug or supplement which could keep the skin healthy during the systemic corticosteroids therapy. Seed of Trichossnthcs kiiilowii was commonly used for pulmonary disease in traditional Chinese medicine. Many studies have investigated and found that seed of Trichosanthes kirilowii has anti-bacterial, anti-HIV, anti-tumor and immunoregulatory functions. This study was performed to investigate the effect of seed of Trichosmthes kirilowii on the Skin Barrier Method : Triamcinolone 0.4mg was injected male hairless mice for 5 weeks ( 2 times a week, totally 10 times), Just before the first injection, hairless mice were divided into 3 groups; Control ( normal saline medicated group ), GroupA( seed of Trichosuuhes kirilowii qd/day medicated group ) and GroupB( seed of Trichosuuhes kiiilowii bid/day medicated group ), Body weight of all the groups were checked during the experiment, After $10^{th}$ injection, TEWL (Transeidermal water loss) of 3 groups were artificially increased by 9 times tape stripping and the changes of TEWL were checked at before stripping, right after, 2h, 4h, 6h, 24h, 48 and 72h later after stripping, AST, ALT and CBC were also checked. Indeed, stratum corneum of 3 groups were also examined and compared with that of normal hairless mouse. Results : 1. GroupB showed significantly lower body weight among three groups 2, There was no statistical difference at AST, ALT and CBC among three groups 3. GroupB was showed significantly lower TEWL than TEWL of Control at 48h later. 4 GroupB recovered it's TEWL of before tape stripping at 24h later, GroupA recovered that at 48h and Control recovered that at 72h later at the same condition 5. Stratum corneum of GroupA and GroupB were looked almost normal and healthy. On the contrary, stratum corneum of Control was looked thin and unhealthy. Conclusions : Seed of Ttichossnthes kirilowii has some effects on skin barrier function, especially TEWL of high dose corticosteroids injected hairless mouse and the efficacy seemed to be related with the dosage.
Background: Polysaccharides are the most important functional constituent in Astragalus membranaceus. The purpose of the present study was to evaluate the effect of polysaccharides isolated from the aboveground parts of A. membranaceus (AMA) and polysaccharides isolated from the roots of A. membranaceus (AMR) immune function by modulated cytotoxic T cell and Th1- and Th2-related cytokines kinetics. Methods and Results: Sprague-Dawley rats were randomly divided into exhaustive exercise case groups and non-exercise case, AMA and AMR samples were administered orally for 30 days (500 mg/kg/day and 10 mg/kg/day, respectively) and were compared to those rats in the groups fed commercial sports drink (SPD) and vehicle. Both exhaustive exercise groups and non-exercise groups had a lower ratio of $CD4^+$ and $CD8^+$ cells in the spleens of the rat fed AMA and AMR compared to those in the rats fed SPD and vehicle group. These results suggested that AMA and AMR promote an increase in the proportion of cytotoxic T cells. The IL-4-producing T lymphocytes decreased significantly in the AMR (10 mg/kg/day) group compared to SPD and vehicle, whereas the AMA group increased the IL-4 concentration more than the SPD and vehicle in exhaustive exercise group. However, the populations of IFN-${\gamma}$-producing T lymphocytes of AMR and AMA increased. AMA decreased the concentration of IFN-${\gamma}$ to inhibit the Th1 response and thereby increased the concentration of IL-4 to induce a Th2 response that was related to humoral immunity in the non-exercise group. Conclusions: These results showed that, in addition to Th1/Th2 regulation, AMR and AMA played an important immuno-modulatory role after exhaustive exercise-induced Th1/Th2 lymphocyte imbalance, which might be correlated with cytokine producing immunoregulatory cells.
The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
/
v.14
no.1
/
pp.129-153
/
2001
Background: SMG (升麻葛根湯加味方) is an herbal medicine which has been used in oriental medicine as a traditional therapeutic agent of pruritus and skin disease. Objective: This study was performed to investigate the effect of SMG on the anti-hypersensitivity and immune response in the murine of type I hypersensitivity induced by the experiment. Materials and Methods: Laboratory rats were primary sensitized with OA (ovalbumin); on day 1, rats of a Control group and Sample group (SMG group) were systemically immunized by subcutaneous injection of 1mg OA and 300mg of Al(OH)3 in a total volume of 2ml saline. The rats of the sample group were orally administered with an SMG water extract for 14 days after primary immunization. On day 14 after the systemic immunization, rats received local immunization by inhaling $0.9\%$ saline aerosol containing $2\%$(wt/vol) OA. A day after local immunization, BAL fluid and peripheral blood were collected from the rats. Total cell, lymphocyte, $CD4^+\;T\;cell,\;CD8^+\;T\;cell,\;CD4^+/CD8^+$ ratio in the BALF, and IgE, $CD4^+\;T\;cell,\;CD8^+$ T cell in the peripheral blood were measured and evaluated. Results: SMG showed a suppressive effect on the immune response in the rats. 1. Total Cells in the BALF decreased in the SMG treated group in comparison group, but statistic differences were not observed. 2. Total lymphocytes in the BALF were statistically decreased in SMG treated group in comparison to the control group. 3. CD4+ T cells in the BALF were statistically decreased in SMG treated group in comparison to the control group. 4. CD8+ T cells in the BALF were decreased in SMG treated group in comparison to the control group, but statistic differences were not observed. 5. The ratio of CD4+/CD8+ in the BALF was statistically decreased in SMG treated group in comparison to the control group. 6. The IgE level in serum was statistically decreased in SMG treated group in comparison to the control group. 7. The ratio of CD4+ and CD8+ in peripheral blood showed undetectable differences between each group of rats. From the experiment cited above, this study shows that SMG has both anti-hypersensitivity effects and immunoregulatory effects when administered to rats. Based on this experiment, it is suggested that SMG could be a useful immunomodulator and anti-allergy agent.
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