Aloe vera gel supercritical $CO_2$ extract (AVGE) has been shown to contain five phytosterols, reduce visceral fat accumulation, and influence the metabolism of glucose and lipids in animal model experiments. Recent epidemiologic studies have shown that obesity is an established risk factor for several cancers including colorectal cancer. Therefore, we examined the effects of AVGE on intestinal polyp formation in Apc-deficient Min mice fed a high-fat diet. Male Min mice were divided into normal diet (ND), high fat diet (HFD), low dose AVGE (HFD+LAVGE) and high dose AVGE (HFD+HAVGE) groups. The ND group received AIN-93G diet and the latter 3 groups were given modified high-fat AIN-93G diet (HFD) for 7 weeks. AVGE was suspended in 0.5% carboxymethyl cellulose (CMC) and administered orally to mice in HFD+LAVGE and HFD+HAVGE groups every day (except on Sunday) for 7 weeks at a dose of 3.75 and 12.5 mg/kg body weight, respectively. ND and HFD groups received 0.5% CMC alone. Between weeks 4 and 7, body weights in the HFD and HFD+LAVGE groups were reduced more than those in the ND group. However, body weights were not reduced in the HFD+HAVGE group. Mice were sacrificed at the end of the experiment and their intestines were scored for polyps. No significant differences were observed in either the incidence and multiplicity of intestinal polyps (${\geq}0.5$ mm in a diameter) among the three groups fed HFD. However, when intestinal polyps were categorized by their size into 0.5-1.4, 1.5-2.4, or ${\geq}2.5$ mm, the incidence and multiplicity of large polyps (${\geq}2.5$ mm) in the intestine in the HFD+HAVGE group were significantly lower than those in the HFD group. We measured plasma lipid (triglycerides and total cholesterol) and adipocytokine [interleukin-6 and high molecular weight (HMW) adiponectin] levels as possible indicators of mechanisms of inhibition. The results showed that HMW adiponectin levels in the HFD group were significantly lower than those in the ND group. However, the levels in the HFD+HAVGE group were significantly higher than those in the HFD group. These results indicate that HAVGE reduced large-sized intestinal polyps and ameliorated reduction in plasma HMW adiponectin levels in Min mice fed HFD.
This study evaluated the effects of dietary anticoccidial drugs plus antibiotic growth promoters (AGPs) on parameters of immunity in commercial broiler chickens. Day-old chicks were raised on used litter from a farm with endemic gangrenous dermatitis to simulate natural pathogen exposure and provided with diets containing decoquinate (DECX) or monensin (COBN) as anticoccidials plus bacitracin methylene disalicylate and roxarsone as AGPs. As a negative control, the chickens were fed with a non-supplemented diet. Immune parameters examined were concanavalin A (ConA)-stimulated spleen cell proliferation, intestine intraepithelial lymphocyte (IEL) and spleen cell subpopulations, and cytokine/chemokine mRNA levels in IELs and spleen cells. ConA-induced proliferation was decreased at 14 d post-hatch in DECX-treated chickens, and increased at 25 and 43 d in COBN-treated animals, compared with untreated controls. In DECX-treated birds, increased percentages of $MHC2^+$ and $CD4^+$ IELS were detected at 14 d, but decreased percentages of these cells were seen at 43 d, compared with untreated controls, while increased $TCR2^+$ IELs were evident at the latter time. Dietary COBN was associated with decreased fractions of $MHC2^+$ and $CD4^+$ IELs and reduced percentages of $MHC2^+$, $BU1^+$, and $TCR1^+$ spleen cells compared with controls. The levels of transcripts for interleukin-4 (IL-4), IL-6, IL-17F, IL-13, CXCLi2, interferon-${\gamma}$ (IFN-${\gamma}$), and transforming growth factor${\beta}$4 were elevated in IELs, and those for IL-13, IL-17D, CXCLi2, and IFN-${\gamma}$ were increased in spleen cells, of DECX- and/or COBN-treated chickens compared with untreated controls. By contrast, IL-2 and IL-12 mRNAs in IELs, and IL-4, IL-12, and IL-17F transcripts in spleen cells, were decreased in DECX- and/or COBN-treated chickens compared with controls. These results suggest that DECX or COBN, in combination with bacitracin and roxarsone, modulate the development of the chicken post-hatch immune system.
Objectives : The aim of this study was to evaluate the efficacy of Hwangryunhaedok-tang (HHT) and Gungangbuja-tang (GBT) on lipopolysaccharide (LPS)-induced mouse model of inflammation. HHT and GBT are one of the representative prescriptions of cold drug and one of the representative prescriptions of hot drug, respectively. For experimental evaluation of their efficacy, we investigated the anti-inflammatory effects of HHT and GBT on LPS-induced inflammation and the mechanisms of their action. Methods : ICR mice were given a HHT (50, 500 mg/kg), GBT (100, 1000 mg/kg) extract orally on three consecutive days. On the third day, they were administered LPS intraperitoneally (35 mg/kg), 1 h after the last sample administration. Blood and liver samples were taken 6 h after the LPS challenge. Cytokine expression and inflammation-related protein factor analyses were performed by Western blotting. Results : Oral administration of HHT significantly reduced pro-inflammatory cytokines, including interleukin (IL)-6, and interferon (IFN)-${\gamma}$ in the serum. While GBT inhibited an increase of IL-6, IFN-${\gamma}$ was not affected. Immunoblot analysis showed that LPS-induced NF-${\kappa}b$ activation was inhibited by GBT, meanwhile HHT only inhibited NF-${\kappa}b$ expression at high does (500 mg/kg). In addition, HHT and GBT inhibited LPS-induced phosphorylation of Erk1/2, Jnk and p38 MAPKs. GBT also significantly inhibited i-Nos and Cox-2 expression, and HHT inhibited only i-Nos expression. Conclusions : Both of HHT and GBT showed anti-inflammatory effects against LPS-induced endotoxemia. However, HHT significantly decreased inflammatory cytokine levels, such as IL-6 and IFN-${\gamma}$ more than GBT, while GBT significantly inhibited inflammatory proteins, including NF-${\kappa}b$, MAP Kinases, i-Nos and Cox-2, more than HHT. These results suggest that HHT and GBT regulate the different mechanisms of action and pathways, presumably by regulating cytokine levels (IL-6, IFN-${\gamma}$), NF-${\kappa}b$ activation, and several pro-inflammatory gene expression, although both of HHT and GBT have anti-inflammatory effects.
Bacterial lipopolysaccharide (LPS) induces expression of pro-inflammatory cytokines and enzymes producing nitric oxide (NO) and prostaglandins (PGs) in immune cells. This process is mediated by the activation of nuclear factor kappaB (NF-${\kappa}B$). In this study, we investigated the anti-inflammatory characteristics of Codium fragile ethanolic extract (CFE) mediated by the regulation of inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) using LPS-stimulated murine macrophage RAW 264.7 cells. CFE significantly inhibited LPS-induced NO and $PGE_2$ production in a dose-dependent manner and suppressed the expression of iNOS and COX-2 proteins in LPS-stimulated RAW 264.7 cells with no cytotoxicity. Pro-inflammatory cytokines, such as interleukin (IL)-$1{\beta}$, IL-6, and tumor necrosis factor-${\alpha}$, were significantly reduced by treatment of CFE in LPS-stimulated RAW 264.7 cells. CFE inhibited the promoter activity of (NF)-${\kappa}B$ in LPS-stimulated macrophages. Treatment with CFE suppressed translocation of the NF-${\kappa}B$ p65 subunit by preventing proteolytic degradation of inhibitor of ${\kappa}B-{\alpha}$. These results indicate that the CFE-mediated inhibition of NO and $PGE_2$ production in LPS-stimulated RAW 264.7 cells is mediated through the NF-${\kappa}B$-dependent transcriptional downregulation of iNOS and COX-2, suggesting the potential of CFE as a nutraceutical with anti-inflammatory activity.
Park, Dong-Hee;Rhee, Hyung-Koo;Jung, Sung-Ki;Jung, Hee-Jae
The Journal of Internal Korean Medicine
/
v.27
no.2
/
pp.394-406
/
2006
Backgrounds and Objectives: Asthma is considered to be an inflammatory disease characterized by airway hyperresponsiveness and Pulmonary eosinophilia. And it is known the structure and function of IL-5, its receptor and the mechnism IL-5 triggered eosinophil accumulation and inflammaion of the airways. At this point of view, we assume which oriental materia medics can the splenocyte inhibit from secreting the IL-S in vitro. Material and Methosds: We used the splenocyte of mouse 8 weeks after its birth, and then cnltivated those into the 2 experimental groups and control group for 48 hours. The culture medium of experimental groups were made of $1{\mu}g/ml,\;10{\mu}g/ml$, oriental materia medics, representative. And the culture media of control group was given no oriental materia medica. Then, we assayed the quantity of cytokine-expression by the Sandwich ELISA. The quantifies of cytokine-expression of the experimental groups were compared with that of the control group which was standardized These method were used for the all of oriental materia medica treated. Results: In this study, we demonstrated that 12 oriental materia medica that inhibit the splenocyte from secreting the IL-5 in both $1{\mu}g/ml,\;and\;10{\mu}g/ml$ culture media. Those were Equiseti Herbs, Sophorae Subprostratae Radix, Moutan Radicis Cortex. Trichosanthis Radix, Buddleiae Flos. Cyperi Rhizoma. Benincasae Semen, Armeniacae Semen. Zedoariae Rhizoma, Astragali Semen, Dolichoris Semen. Lilii Bulbus, Asparagi Radix, Atractylodes Rhizoma White, Polygonati Officinallis Rhizoma. Conculusions: These findinga indicate that some oriental materia medica, specially Antipyretics, Herbs for Resolving Phlegm, Relieving Cough and Calming Wheezing and Herbs for Tonifring and Invigorating effects inhibit the splenocyte from secreting the IL-5. And further study experimented in vivo is needed for treating IL-5-driven inflammatory disease including asthma.
Objective : We aimed to identify the dose-dependent inhibitory effects of Sabaek-san(瀉白散) and Sabaeksan plus Sasam(Adenophorae Radix) 瀉白散加沙蔘) on the mRNA expressions of Interleukin(IL)-6, IL-8 and granulocyte macrophage colony stimulating factor(GM-CSF) involved in the asthma model. Materials and Methods : Through this study, BEAS-2B cell lines, human epithelial cells were used. These cells were stimulated by tumor necrosis factor(TNF)-${\alpha}$, IL-1${\beta}$ and histamine for artificial inflammatory expression. ${\beta}$-action messenger RNA(mRNA) was used for standards. After each 24hours of Sabaeksan and Sabaeksan plus Sasam treatment, total cellular RNAs were collected by treating RNA zol directly on living cells, Then the transcriptional activities of IL-6, 8 and GM-CSF were measured by RT-PCR with electrophoresis, Results : The mRNA expressions of IL-6 are significantly inhibited compared to those of controlled group at 40 and 100ug/ml of Sabaeksan extract and $100{\mu}g/ml$ of Sabaeksan plus Sasam extract (p<0.05). The mRNA expressions of IL-8 are significantly inhibited compared to that of controlled group at 2.40 and 100 ug/ml of Sabaeksan extract and $40.100{\mu}g/ml$ of Sabaeksan plus Sasam extract(p<0.05) THe mRNA expressions of GM-CSF are significantly inhibited compared to those of the controlled group at $100{\mu}g/ml$ of Sabaeksan extract adn $40.100{\mu}g/ml$ of Sabaeksan plus Sasam extract.(p<0.05) Conclusions : This study shows that Sabaeksan and Sabaeksan plus Sasam have dose-dependent inhibitory effects on the mRNA expressions of IL-6, IL-8 and GM-CSF in human epithelial cells. Therefore, these types of herb medicine may inhibit the inflammatory process of asthma. Advanced studies are required to investigate the mechanisms of inhibition by herb medicine in the asthma model.
Objectives : The aim of the current study was to investigate the effects of Sargassum (Sargassum pallidum (TURN.) C. AG.; SP) on the experimental colitis induced by 2,4,6-trinitrobenzene sulfonic acid (TNBS) in mice. Methods : ICR mice were divided into 7 groups (NOR, CON, $SS50\times5$, $SP20\times3$, $SP50\times3$, $SP20\times5$, $SP50\times5$). TNBS processing was intrarectally applied to all experimental groups on the 3rd experiment day, except the normal group (NOR). For investigating the prophylactic effect, SP at doses of 20 mg/kg ($SP20\times5$) and 50 mg/kg ($SP50\times5$) were orally administered for 5 days. The SP at doses of 20 mg/kg ($SP20\times3$) and 50 mg/kg ($SP50\times3$) were orally administered for 3 days after the colitis induction in order to check the effect of treatment. As a positive control group, sulfasalazine 50 mg/kg ($SS50\times5$) was administrated. Macroscopic findings of epithelial tissue on mice were measured by colon length and macroscopic score. Histologic findings were also checked by crypt cell, epithelial cell, inflammatory cell and edema of submucosa. We measured the ability of SP to inhibit lipid peroxidation and myeloperoxidase activity. We also measured levels of the inflammatory markers, interleukin (IL)-$1\beta$ and cyclooxygenase-2 (COX-2), its transcription factor activation, phospho-NF-${\kappa}B$ (pp65), in the colon by enzyme-linked immunosorbent assay and immunoblot analysis. We measured activation of fecal bacterial enzyme, $\beta$-glucuronidase and degradation activation of fecal glycosaminoglycan (GAG), and hyaluronic acid. Results : Oral administration of SP on mice inhibited TNBS-induced colon shortening and myeloperoxidase activity in the colon of mice as well as IL-$1\beta$ and COX-2 expression. SP also inhibited TNBS-induced lipid peroxidation and pp65 activation in the colon of mice. SP inhibited $\beta$-glucuronidase activation and fecal hyaluronic acid degradation activation as well. Conclusions : SP could be a possible herbal candidate and preventive prebiotic agent for treating inflammatory bowel disease (IBD). Further experiments to differentiate effects of SP on IBD, such as other solutions and extracting times, might be promising.
Gereltuya, Renchinkhand;Son, Ji Yoon;Magsar, Urgamal;Paik, Seung-Hee;Lee, Jo Yoon;Nam, Myoung Soo
Journal of Life Science
/
v.25
no.1
/
pp.75-83
/
2015
Curcuma longa L. (CL), a traditional medicinal plant, is well known as a functional food ingredient. The major component of CL is a curcumin of anthocyanin family that has multi-functions such as antimicrobial, anticancer, and antioxidant activity. In this study, fermented milk containing CL was prepared using a mixed strain culture (Bifidobacterium bifidus, Streptococcus thermophilus, Lactobacillus acidophilus), and its physicochemical properties were characterized. In addition, inflammatory cytokine-modulating effects of the fermented milk were also investigated. As regards the properties of fermented milk, the growth rate of lactic acid bacteria in fermented milk containing CL was found to be remarkably more rapid than control. During fermentation, caseins and whey proteins were observed to be partially hydrolyzed, and lactic acid and acetic acid were produced in larger amounts than in the control. The sensory score of fermented milk containing CL was lower than control, owing to its bitter taste and strong flavor. RAW 264.7 cells treated with CL fermented milk supernatant showed no cytotoxicity. Inflammatory cytokines such as tumor necrosis factor-alpha (TNF-${\alpha}$) and interleukin-6 (IL-6) were significantly produced by fermented milk with CL, compared to control. The secretion of nitric oxide (NO) from RAW 264.7 cells significantly increased relative to the control. Results from the present study suggested that CL could be used as a natural immunomodulating ingredient for making yogurts, beverages, and other products.
Hericium erinaceus is an edible mushroom used as a medicinal food in Asian countries. In this study, the chemopreventive effects of H. erinaceus mycelia hot water extract (HEW) were evaluated. HEW remarkably induced the luciferase activity of the antioxidant response element (ARE), located in the promoter region of phase 2 and antioxidant genes and regulated by nuclear factor E2-related factor 2 (Nrf2). The up-regulation of ARE activity by HEW corresponded with the induction of Nrf2 and the antioxidant enzyme, hemeoxygenase-1. The inhibition of cyclooxygenase-2 (COX-2) activity is a promising effective approach in cancer chemoprevention, and HEW prominently suppressed COX-2 protein expression in HepG2 cells. Furthermore, HEW showed anti-inflammatory activity by modulating inflammatory mediators such as nitric oxide (NO), inducible NO synthase, tumor necrosis factor-${\alpha}$, interleukin-$1{\beta}$, and the transcription factor, nuclear factor-${\kappa}B$, in lipopolysaccharide-stimulated RAW 264.7 cells. These results suggest that H. erinaceus possessed anti-tumor and anti-inflammatory effects via the modulation of Nrf2/ARE and inflammatory signaling pathways, and may therefore have potential use as a natural chemopreventive agent.
Starfish are a potential source of marine materials, but their unique odor can limit application. Our previous work suggested that brittle star Ophioplocus japonicus extract could be more effective as a cosmetic material by reducing its odor through a roasting process. However, the biological properties of heat-treated Ophioplocus japonicus extract (HOJE) remain poorly understood. We here examined the anti-inflammatory potential of HOJE in lipopolysaccharide (LPS)-induced RAW 264.7 cells. HOJE significantly inhibits LPS-stimulated nitric oxide (NO) production without affecting cell viability in a dose-dependent manner and suppresses LPS-induced expression of inducible nitric oxide synthases (iNOS) and pro-inflammatory cytokines such as interleukin-6 and -1β. Furthermore, treatment of pyrrolidine dithiocarbamate to inhibit nuclear factor kappa B (NF-κB) signaling accelerated the inhibitory effect of HOJE on NO production, and the translocation of NF-κB p65 from the cytosol to the nucleus was attenuated by HOJE. These results show that HOJE ameliorates inflammation partly through NF-κB signaling which consequently suggests that it has anti-inflammatory potential.
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