• Title/Summary/Keyword: Cellular immune response

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Stratum Corneum Lipids as Bioactive Materials for Atopic Dermatitis (생체활성 각질층 지질 - 아토피 피부염 관리를 중심으로 -)

  • Park Byeong Deog;Youm Jong Kyung;Ahn Sung Ku;Lee Seung Hun
    • Journal of the Society of Cosmetic Scientists of Korea
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    • v.30 no.3 s.47
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    • pp.345-352
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    • 2004
  • There are two paradigms to explain the atopic dermatitis. The first is outside-inside paradigm and the second is inside-outside paradigm. According to the outside-inside paradigm the best way to treat the atopic dermatitis is recovery of skin barrier function. The barrier function is maintained by the specific structure of stratum corneum, which is constructed from corneocytes and intercellular lipids. In terms of lipid structures of SC in atopic dermatitis and lamellar ichthyosis, they contain more fluid hexagonal gel structures in SC and show deficiencies in free fatty acids, especially long chains and certain ceramides. With this reason, moisturizer which has the lamellar structure and restoring function of intrinsic intercellualr long periodicity phase can maintain and restore the lamellar structure of intercellular lipids in SC. The moisturizers containing ceramide or pseudoceramide also seem to be reasonable therapy for atopic dermatitis and several skin diseases, which interrelated with impaired skin harrier. By the way, according to the inside-outside paradigm, immune response including helper T cells, IgE, eosinophils is related. It is effective treatment of atopic dermititis to restore imbalance between Th1 and Th2 cells. Even though several kinds of immune-suppressor were introduced, these can affect the intrinsic immune function. SPC and S1P, metabolites of ceramide, would be interesting because they have the function of wound healing and immune modulating properties.

Effect of bee pollen extract on activation of dendritic cells and induction of Th1 immune response (꿀벌 꽃가루 열수 추출물의 수지상 세포 활성화 및 Th1 반응에 미치는 효과)

  • Cho, Eun-Ji;Kim, Yi-Eun;Byun, Eui-Hong
    • Korean Journal of Food Science and Technology
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    • v.50 no.4
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    • pp.444-450
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    • 2018
  • Dendritic cells (DCs) are potent antigen-presenting cells that play a pivotal role in modulating both innate and adaptive immunity. This study examined the immunomodulatory activities of hot-water extracts of bee pollen (BPW) in bone-marrow derived DCs (BMDC) and mice splenocytes. BMDCs isolated from mice were treated with 250 and $500{\mu}g/mL$ BPW for 24 h. BPW, up to $500{\mu}g/mL$, did not display any cellular toxicity against BMDCs. In fact, it functionally induced BMDC activation via augmentation of CD80, CD86, and major histocompatibility complex (MHC) class I/II expression and pro-inflammatory cytokine (tumor necrosis factor; $TNF-{\alpha}$, interleukin; IL-6, and $IL-1{\beta}$) production. Interestingly, BPW treatment significantly increased the production of interferon $(IFN)-{\gamma}$ in splenocytes, suggesting its possible contribution to Th1 polarization in immune response. Taken together, these findings suggest that BPW may regulate innate and adaptive immunity via DC activation and Th1 polarization in immune responses.

A Review : On Exercise Performance Induction Gene Factors Change (운동이 유전자 조절물질에 미치는 영향에 관한 고찰)

  • Um, Ki-Mai;Yang, Yoon-Kwon;Kim, Tae-Woo
    • Journal of Korean Physical Therapy Science
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    • v.8 no.1
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    • pp.745-758
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    • 2001
  • The purpose of study to phenomenological examine and the mechanism regarding the gene(DNA, RNA, Protein) and sports to studied, analyzed. and evaluated. This review considers the evidence for genetic effects in several determinants of endurance performance and resistance performance, namely: body measurements and physique, body fat pulmonary functions, cardiac and circulatory functions, muscle characteristics. substrate utilization, maximal aerobic power and other. Moreover, the response to aerobic training of indicators aerobic work metabolism and endurance performance is reviewed, with emphasis on the specificity of the response and the individual differences observed in training ability. This study indicate that improvement of 'Enhancer Action' in RNA genes changed by exercise or sports. Moreover exercise was effect on Central Dogma with DNA makes RNA makes Protein. and think that occurred with exercise influence on skeletal muscle into cell have to Myosin Heavy Chain (MHC) changed was after exercise performance, which accompanied into skeletal muscle that were exercise-induces gene-modulation that is, take gene mutations. This study known that existed hormone(epinephrine)-immune system with interaction. Exercise were altered insulin binding and MAP Kinase signaling increased into immune cells. This review suggested that the high rate of glutamine utilization by cells of the immune system serves to maintain a high intra cellular concentration of the intermediates of biosynthetic pathways such that optimal rates of DNA, RNA and protein synthesis can be maintained. In the absence of glutamine, lymphocytes do not proliferate in vitro: proliferation increase greatly as the glutamine concentration increase. Glutamine is synthesized in skeletal muscle. Skeletal muscle and plasma glutamine levels are lowered by sepsis, injury, bums, surgery and endurance exercise and in the overtrained athlete. The study of result show that production of ET-1 is markedly increased tissue specifically in the heart by exercise without appreciable changes in endothelin-converting enzyme and endothelial receptor expressions, suggest that myocardial ET-1 may participate in modulation of cardiac function during exercise. Conclusionally, this study indicate that improvement of 'Enhancer Action' in RNA genes changed by exercise or sports. Moreover exercise was effect on Central Dogma with DNA makes RNA makes Protein. This study is expected to contribute the area of sports science, medicine, hereafter more effort is required to establish the relation between gene alters and exercise amount.

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Ginseng berry polysaccharides on inflammation-associated colon cancer: inhibiting T-cell differentiation, promoting apoptosis, and enhancing the effects of 5-fluorouracil

  • Wang, Chong-Zhi;Hou, Lifei;Wan, Jin-Yi;Yao, Haiqiang;Yuan, Jinbin;Zeng, Jinxiang;Park, Chan Woong;Kim, Su Hwan;Seo, Dae Bang;Shin, Kwang-Soon;Zhang, Chun-Feng;Chen, Lina;Zhang, Qi-Hui;Liu, Zhi;Sava-Segal, Clara;Yuan, Chun-Su
    • Journal of Ginseng Research
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    • v.44 no.2
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    • pp.282-290
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    • 2020
  • Background: Ginseng is a commonly used herbal medicine in treating various medical conditions. Chronic gut inflammation is a recognized factor for the development of colorectal cancer (CRC). In this project, Asian ginseng berry polysaccharide preparations were used to assess their effects on CRC and related immune regulation mechanisms. Methods: Ginseng berry polysaccharide extract (GBPE) and purified ginseng berry polysaccharide portion (GBPP) were used to evaluate their activities on human HCT-116 and HT-29 CRC cell proliferation. Interleukin-8 secretion analysis was performed on HT-29 cells. Naive CD4 cell isolation and T-helper cell differentiation were performed and determined using flow cytometry for Th1 and Treg in addition to cell cycle and apoptotic investigation. Results: GBPE and GBPP significantly inhibited interleukin-8 secretion and cancer cell proliferation, inhibited CD4+IFN-γ+ cell (Th1) differentiation, and decreased CD4+FoxP3+ cell (Treg) differentiation. Compared to the GBPE, GBPP showed more potent antiinflammatory activities on the malignant cells. This is consistent with the observation that GBPP can also inhibit Th1-cell differentiation better, suggesting that it has an important role in antiinflammation, whereas Treg cells hinder the body's immune response against malignancies. Supported by cell cycle and apoptosis data, GBPE and GBPP, at various degrees, remarkably enhanced the anticancer activities of 5-fluorouracil. Conclusion: Data from this project suggested that Asian ginseng berry potentially has clinical utility in managing enteric inflammation and suppressing CRC through immunomodulation mechanisms.

육계에서 멜라토닌의 주기적인 변화와 면역성 및 생산성에 미치는 영향에 대한 고찰

  • 류명선;김상호;류경선
    • Proceedings of the Korea Society of Poultry Science Conference
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    • 2000.11a
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    • pp.81-84
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    • 2000
  • Effects of different photoperiod regimens on the cellular and humoral immunity in broiler chickens were studied(Exp 1). Total one hundred ninety two one-day-old commercial broiler chicks(Cobb$\times$Cobb) were raised between constant lighting(CL) and intermittent lighting (1h light: 3h darkness(IL; 1l; 3D) Body weight, feed intake and feed conversion were measured for seven week. Peripheral blood and splenic lymphocyte activities were tested at 3 and 5 wk of age by performing a mitogen cellproliferation assay with a polyclonal T-cell mitogen, concanavalin A (Con A), and B-cell mitogen, lipopolysaccharide (LPS). To investigate the effect of photoperiod on the humoral immunity, chicks were immunized with sheep red blood cell(SRBC) and iinactivated Newcastle disease virus(NDV) vaccine. Total immunoglobulin G(IgG) concentration was also determined. Diurnal change of melatonin was tested in sera. In experiment 2, 0.1ml melatonin were subcutaneously injected from three to five weeks old if immunomodulation effect of lighting regimen was due to the melatonin or not. Injections of melatonin were made at 0700h and the dosage was 10ng (M2), 100ng(M3), 1$\mu\textrm{g}$(M4) per bird daily, respectively. control were quivalent injections of vehicle(M1). Lymphocyte activities were tested and humoral immunities were examined at 5 weeks of age. Blood melatonin concentration was determined at 0h, 1, h, 2h, and 3h posterior to injection at five weeks old. It was higher in CL chicks than IL chickens during the subsequent period of 3 to 5 wk of age. However, weight gain of chicks raised IL were significantly higher at 6 wk of age than CL(P<0.05). Antibody response to NDV was not affected by both photoperiod regimens and melatonin injection, whereas anti-SRMB titer and IgG concentration were enhanced. Lymphocyte activity of chickens raised under IL was sighificantly higher than those of chickens raised under CL. Melatonin injection also increased lymphocyte activity. When peripheral blood lymphocytes were used, proliferation response to LPS and Con A were significantly increased in M2 and respectively. The results of this experiments suggest that IL improved host immune response and melatonin have immunomodulatory roles.

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Changes in Blood Cell Morphology and Number of Red Spotted Grouper, Epinephelus akaara in Response to Thermal Stress

  • Rahman, Md Mofizur;Kim, Hyung Bae;Baek, Hea Ja
    • Development and Reproduction
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    • v.23 no.2
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    • pp.139-148
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    • 2019
  • Rising of water temperature due to global warming is a great concern to aquaculturists and fishery biologists. Hence, the present study aimed to investigate the effects of high water temperature on juvenile red spotted grouper, Epinephelus akaara based on the evaluation of stress responses in blood. E. akaara juveniles were exposed to different thermal conditions ($25^{\circ}C$, $28^{\circ}C$, $31^{\circ}C$, and $34^{\circ}C$) for 6 weeks following 2 weeks of acclimation at $25^{\circ}C$. Blood cell morphology and number were examined at three sampling points (2, 7, and 42 days) from a total of 180 fish. Major erythrocytic cellular abnormalities (ECA) observed in blood smears of thermally stressed groups ($31^{\circ}C$ and $34^{\circ}C$) after 6 weeks were echinocytes, teardrop-like cells, swollen cells and vacuolated cells. Both red and white blood cell number (RBC and WBC) were significantly (p<0.05) elevated in $31^{\circ}C$ and $34^{\circ}C$ group after 6 weeks thermal exposure. Differential leucocytes number showed significant increases in neutrophil (N) and decreases in lymphocytes (L) in the highest temperature ($34^{\circ}C$). Different N:L ratio was observed at different thermal conditions which can be used as a reliable alternative to measure stress response. Taken together, these results suggest that higher temperature ($31^{\circ}C$ and $34^{\circ}C$) can interfere the immune system of red spotted grouper by altering the blood cell morphology and number.

Low pH stress responsive transcriptome of seedling roots in wheat (Triticum aestivum L.)

  • Hu, Haiyan;He, Jie;Zhao, Junjie;Ou, Xingqi;Li, Hongmin;Ru, Zhengang
    • Genes and Genomics
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    • v.40 no.11
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    • pp.1199-1211
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    • 2018
  • Soil acidification is one of major problems limiting crop growth and especially becoming increasingly serious in China owing to excessive use of nitrogen fertilizer. Only the STOP1 of Arabidopsis was identified clearly sensitive to proton rhizotoxicity and the molecular mechanism for proton toxicity tolerance of plants is still poorly understood. The main objective of this study was to investigate the transcriptomic change in plants under the low pH stress. The low pH as a single factor was employed to induce the response of the wheat seedling roots. Wheat cDNA microarray was used to identify differentially expressed genes (DEGs). A total of 1057 DEGs were identified, of which 761 genes were up-regulated and 296 were down-regulated. The greater percentage of up-regulated genes involved in developmental processes, immune system processes, multi-organism processes, positive regulation of biological processes and metabolic processes of the biological processes. The more proportion of down-regulation genes belong to the molecular function category including transporter activity, antioxidant activity and molecular transducer activity and to the extracellular region of the cellular components category. Moreover, most genes among 41 genes involved in ion binding, 17 WAKY transcription factor genes and 17 genes related to transport activity were up-regulated. KEGG analysis showed that the jasmonate signal transduction and flavonoid biosynthesis might play important roles in response to the low pH stress in wheat seedling roots. Based on the data, it is can be deduced that WRKY transcription factors might play a critical role in the transcriptional regulation, and the alkalifying of the rhizosphere might be the earliest response process to low pH stress in wheat seedling roots. These results provide a basis to reveal the molecular mechanism of proton toxicity tolerance in plants.

Enhanced Immune Cell Functions and Cytokine Production after in vitro Stimulation with Arabinoxylans Fraction from Rice Bran

  • Choi, Eun-Mi;Kim, Ah-Jin;Hwang, Jae-Kwan
    • Food Science and Biotechnology
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    • v.14 no.4
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    • pp.479-486
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    • 2005
  • Arabinoxylan, a complex polysaccharide in cereal cell walls, has recently received research attention as a biological response modifier. The immunomodulating effect of arabinoxylans from rice bran (AXrb) was studied using a combined process of extrusion and commercial hemicellulase treatment in order to elucidate the augmentation mechanism of cell-mediated immunity in vitro. The cytotoxicity of mouse spleen lymphocytes against YAC-1 tumor cells was significantly enhanced by treatment with AXrb at $10-100\;{\mu}g/mL$. In an attempt to investigate the mechanism by which AXrb enhance NK cytotoxicity, we examined the effect of AXrb on cytokine production by spleen lymphocytes. Culture supernatants of the cells incubated with AXrb were collected and analyzed for IL-2 and IFN-${\gamma}$ synthesis by ELISA. IL-2 and IFN-${\gamma}$ production were increased significantly. These results suggest that AXrb may induce Th1 immune responses. Macrophages play an important role in host defenses against tumors by killing them and producing secretory products, which protect against bacterial, viral infection and malignant cell growth. AXrb were examined for their ability to induce secretory and cellular responses in murine peritoneal macrophages. When macrophages were treated with various concentrations ($10-100\;{\mu}g/mL$) of AXrb, AXrb induced tumoricidal activity, as well as increasing phagocytosis and the production of NO, $H_2O_2$, TNF-${\alpha}$, IL-$1{\beta}$, and IL-6. These results indicate that reactive oxygen species, reactive nitrogen species, and inflammatory cytokines are likely to be the major mediators of tumoricidal activity in AXrb-treated macrophages. Therefore, AXrb may be useful in cancer immunotherapy and it is anticipated that AXrb obtained using extrusion and subsequent enzyme treatment can be used as an ingredient in nutraceuticals and cereal-based functional food.

Distinct Humoral and Cellular Immunity Induced by Alternating Prime-boost Vaccination Using Plasmid DNA and Live Viral Vector Vaccines Expressing the E Protein of Dengue Virus Type 2

  • George, Junu A.;Eo, Seong-Kug
    • IMMUNE NETWORK
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    • v.11 no.5
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    • pp.268-280
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    • 2011
  • Background: Dengue virus, which belongs to the Flavivirus genus of the Flaviviridae family, causes fatal dengue hemorrhagic fever (DHF) and dengue shock syndrome (DSS) with infection risk of 2.5 billion people worldwide. However, approved vaccines are still not available. Here, we explored the immune responses induced by alternating prime-boost vaccination using DNA vaccine, adenovirus, and vaccinia virus expressing E protein of dengue virus type 2 (DenV2). Methods: Following immunization with DNA vaccine (pDE), adenovirus (rAd-E), and/or vaccinia virus (VV-E) expressing E protein, E protein-specific IgG and its isotypes were determined by conventional ELISA. Intracellular CD154 and cytokine staining was used for enumerating CD4+ T cells specific for E protein. E protein-specific CD8+ T cell responses were evaluated by in vivo CTL killing activity and intracellular IFN-${\gamma}$ staining. Results: Among three constructs, VV-E induced the most potent IgG responses, Th1-type cytokine production by stimulated CD4+ T cells, and the CD8+ T cell response. Furthermore, when the three constructs were used for alternating prime-boost vaccination, the results revealed a different pattern of CD4+ and CD8+ T cell responses. i) Priming with VV-E induced higher E-specific IgG level but it was decreased rapidly. ii) Strong CD8+ T cell responses specific for E protein were induced when VV-E was used for the priming step, and such CD8+ T cell responses were significantly boosted with pDE. iii) Priming with rAd-E induced stronger CD4+ T cell responses which subsequently boosted with pDE to a greater extent than VV-E and rAd-E. Conclusion: These results indicate that priming with live viral vector vaccines could induce different patterns of E protein-specific CD4+ and CD8+ T cell responses which were significantly enhanced by booster vaccination with the DNA vaccine. Therefore, our observation will provide valuable information for the establishment of optimal prime-boost vaccination against DenV.

The Effect of Bupleuri Radix Herbal-acupuncture Solution on Immune Responses to Adjuvant Induced Arthritis in Mice (시호약침(柴胡藥鍼)이 생쥐의 Adjuvant 유발(誘發) 관절염(關節炎)에 미치는 영향)

  • Koo, Min-Suck;Yoon, Jong-Hwa;Kim, Kyoung-Ho;Jang, Jun-Hyeok;Lee, Sung-Deck;Kim, Kap-Sung
    • Journal of Acupuncture Research
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    • v.19 no.3
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    • pp.51-63
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    • 2002
  • Objective : The purpose of this study is to investigated that effect of Bupleuri Radix Herbal-acupuncture solution (BRHS) on the celluar immune response in mice with adjuvant induced arthritis, performed several experimental items : those are paw edema, IL-1b, IL-6, IL-8, PNF-a and $PGE_2$. Methods : All the male Sprague Daeley mice used in this study were bred and maintained in our pathogen-free mouse colony and were 8 weeks of age at the start of the experiment. The experimental model of arthritis was induced by injection of $50{\mu}g/{\mu}{\ell}$ adjuvant(mineral oil mixed Mycobacterium butyricum). Bupleuri Radix Herbal-acupuncture solution (BRHS) was injected into $ST_{36}$(足三理) of mice daily for 21 days. Immunohistological analysis was carried out to assess paw edema, IL-$1{\beta}$, IL-6, IL-8, PNF-${\alpha}$ and $PGE_2$expression in synovial membrance and sera Bupleuri Radix Herbal-acupuncture solution(BRHS) injected. Results : At day 21 post arthritis onset, immunohistological studies using monoclonal antibodies showed that Bupleuri Radix Herbal-acupuncture solution (BRHS) group had decreased expression of IL-$1{\beta}$, IL-6, IL-8, PNF-${\alpha}$ and $PGE_2$ at inflamatory cytokines production and edema compared with control group. Conclusion : Bupleuri Radix Herbal-acupuncture solution (BRHS) inhibited infammatory cytokines production and edema in adjuvant induced arthritic mice. Thus, Herbal-acupuncture solution may have prevention.

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