• Title/Summary/Keyword: Immunity responses

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Immunity Responses of the Spatholubus Suberectus Dunn to the Synovial Cells Isolated from Patients with Rheumatoid Arthritis (류마토이드 관절염 환자 골막세포에 대한 계혈등의 면역반응)

  • Seo Hae Gyoung;Oh Min Suck;Kim Dong Hee
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.17 no.3
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    • pp.780-786
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    • 2003
  • This study was carried out to know the immunity responses of the Spatholubus suberectus Dunn(hereinafter referred to STSD) to the synovial cells isolated from patients with rheumatoid arthritis. Various experiments were performed in vitro to analyse the immunity effects of STSD. Gene expression and production of pro-inflammatory cytokines such as IL-1β, IL-6, TNF-α, iNOS and COX-2 were determined by RT-PCR and ELISA kit. And also the binding activity of NF-kB and AP-1 were measured by Electromobility shift assay (EMSA) and the production of ROS was measured by flow cytometry. The results were obtained as follows 1. The gene expression and production of pro-inflammatory cytokines IL-1β, IL-6, TNF-α were reduced significantly. 2. The gene expression of iNOS and COX-2 were reduced. 3. The binding activity of NF-kB and AP-1 were inhibited. 4. The production of ROS in human synovial cells was reduced significantly. Comparison of the results for this study showed that STSD had immunomodulatory effects of suppressing or enhancing. So we expect that STSD should be used as a effective drugs for not only rheumatoid arthritis but also another auto-immune disease. Therefore we have to survey continuously in looking for the effective substance and mechanism in the future.

The Effects of Hand Reflexology on Saeng-Chi and Immunity in ESRD Patients (손 반사요법이 말기 신부전증 환자의 생기와 면역 반응에 미치는 영향)

  • Oh Sei-Young
    • Journal of Korean Academy of Fundamentals of Nursing
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    • v.9 no.2
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    • pp.213-225
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    • 2002
  • The purpose of this study was to identify the Effect of Hand Reflexology on Saeng-chi of physiologic, emotional & motivational responses and Immunity in ESRD patients who received hemodialysis in two general hospital from June to September. 2001 A two group quasi-experimental research with pre and post test design was used. The number of participants in the experimental group was 23, and in the control group, 20 The Hand Reflexology Intervention was developed by the researcher based on hand reflexology by Carter & Weber and Chi-massage by Chia. The Hand Reflexology was applied to both hands for 10 minutes per day. and 5 days by 5 times. To evaluate the effects of the program, Pre and Post evaluations were done. In the physiologic response, the PR was decreased at the 1st times post treatment and at the 5th. In addition BP was decreased at the 1st time, but not the 5th. After 5 treatments, there were significant increase in Hb and significant decreases in the BUN and Cr. levels in the experimental group. In the emotional and motivational responses, there were significant increases in vigor, mood, uplifts and self care agency scores in the experimental group, but there was no significant difference in the Rosenberg's self esteem score. In the experimental group, significantly increased CD4, and h/s ratios were found, also NK cells were significantly decreased, and there was a decrease in the CD8. However, no significant differences between groups were observed. There were significant increases in CD32, CD33, CD34 in the experimental group. The self care agency score correlated negatively with the CD8. From the above results, Hand Reflexology is shown to be an effective mind-body nursing intervention for enhancing Saeng-chi responses and affecting some of the immune responses. However, Immune cell activation and differentiation with hand reflexology will be achieved with future study.

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Antimicrobial Peptides in Innate Immunity against Mycobacteria

  • Shin, Dong-Min;Jo, Eun-Kyeong
    • IMMUNE NETWORK
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    • v.11 no.5
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    • pp.245-252
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    • 2011
  • Antimicrobial peptides/proteins are ancient and naturally-occurring antibiotics in innate immune responses in a variety of organisms. Additionally, these peptides have been recognized as important signaling molecules in regulation of both innate and adaptive immunity. During mycobacterial infection, antimicrobial peptides including cathelicidin, defensin, and hepcidin have antimicrobial activities against mycobacteria, making them promising candidates for future drug development. Additionally, antimicrobial peptides act as immunomodulators in infectious and inflammatory conditions. Multiple crucial functions of cathelicidins in antimycobacterial immune defense have been characterized not only in terms of direct killing of mycobacteria but also as innate immune regulators, i.e., in secretion of cytokines and chemokines, and mediating autophagy activation. Defensin families are also important during mycobacterial infection and contribute to antimycobacterial defense and inhibition of mycobacterial growth both in vitro and in vivo. Hepcidin, although its role in mycobacterial infection has not yet been characterized, exerts antimycobacterial effects in activated macrophages. The present review focuses on recent efforts to elucidate the roles of host defense peptides in innate immunity to mycobacteria.

The Effects of Saenghyuldan(shengxiedan) on Bone Marrow Failure (생혈단의 골수부전 치료효과에 대한 실험적 연구)

  • 이연월;손창규;조종관
    • The Journal of Korean Medicine
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    • v.22 no.1
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    • pp.33-45
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    • 2001
  • Objectives: This experimental study was carried out to prove the effect of Saenghyuldan(SHD; shengxiedan) on bone marrow failure induced by cyclophosphamide(CY) and irradiation in mice. Methods: The following were performed; immunopathology, histopathlogical findings of bone marrow and in the smear of myelocyte. hematopoietic cytokine(IL-3, GM-CSF, TPO), hematopoietic stem cell colony assay, humoral immunity(LPS mitogen response), cell-mediated immunity (Con A mitogen response) and nonspecific immunity(macrophage adherence & phagocytosis) in vitro or vivo. Results: SHD showed a protective effect on bone marrow failure induced by cyclophosphamide(CY) and irradiation in mice. SHD increased lymphoproliferative responses to LPS and Con A, and activated macrophage adherence and phagocytosis to SRBC. Conclusions: We expect that SHD can be used to treat bone marrow failure and immune suppression induced by the chemotherapy or radiation.

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Positive and negative regulation of the Drosophila immune response

  • Aggarwal, Kamna;Silverman, Neal
    • BMB Reports
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    • v.41 no.4
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    • pp.267-277
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    • 2008
  • Insects mount a robust innate immune response against a wide array of microbial pathogens. The hallmark of the Drosophila humoral immune response is the rapid production of anti-microbial peptides in the fat body and their release into the circulation. Two recognition and signaling cascades regulate expression of these antimicrobial peptide genes. The Toll pathway is activated by fungal and many Gram-positive bacterial infections, whereas the immune deficiency (IMD) pathway responds to Gram-negative bacteria. Recent work has shown that the intensity and duration of the Drosophila immune response is tightly regulated. As in mammals, hyperactivated immune responses are detrimental, and the proper down-modulation of immunity is critical for protective immunity and health. In order to keep the immune response properly modulated, the Toll and IMD pathways are controlled at multiple levels by a series of negative regulators. In this review, we focus on recent advances identifying and characterizing the negative regulators of these pathways.

Pattern-Recognition Receptor Signaling Initiated From Extracellular, Membrane, and Cytoplasmic Space

  • Lee, Myeong Sup;Kim, Young-Joon
    • Molecules and Cells
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    • v.23 no.1
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    • pp.1-10
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    • 2007
  • Invading pathogens are recognized by diverse germline-encoded pattern-recognition receptors (PRRs) which are distributed in three different cellular compartments: extracellular, membrane, and cytoplasmic. In mammals, the major extracellular PRRs such as complements may first encounter the invading pathogens and opsonize them for clearance by phagocytosis which is mediated by membrane-associated phagocytic receptors including complement receptors. The major membrane-associated PRRs, Toll-like receptors, recognize diverse pathogens and generate inflammatory signals to coordinate innate immune responses and shape adaptive immune responses. Furthemore, certain membrane-associated PRRs such as Dectin-1 can mediate phagocytosis and also induce inflammatory response. When these more forefront detection systems are avoided by the pathogens, cytoplasmic PRRs may play major roles. Cytoplasmic caspase-recruiting domain (CARD) helicases such as retinoic acid-inducible protein I (RIG-I)/melanoma differentiation-associated gene 5 (MDA5), mediate antiviral immunity by inducing the production of type I interferons. Certain members of nucleotide-binding oligomerization domain (NOD)-like receptors such as NALP3 present in the cytosol form inflammasomes to induce inflammatory responses upon ligand recognition. Thus, diverse families of PRRs coordinately mediate immune responses against diverse types of pathogens.

Identification of CM1 as a Pathogenic Factor in Inflammatory Diseases and Cancer

  • Bae, Se-Yeon;Kim, Hyem-In;Yu, Yeon-Sil;Lee, Na-Eun;Kong, Joo-Myoung;Kim, Hang-Rae;Hwang, Young-Il;Song, Yeong-Wook;Kang, Jae-Seung;Lee, Wang-Jae
    • IMMUNE NETWORK
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    • v.11 no.3
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    • pp.175-181
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    • 2011
  • Background: CM1 (centrocyte/-blast marker 1) was defined by a mAb against concavabalin-A (ConA) activated PBMC. It is expressed in germinal center of human tonsil and on the surface of activated PBMC as well as cancer cells. Recently, increased productions of pro-inflammatory mediators were detected from activated PBMC by CM1 ligation. Methods: However, there is a limitation to explain the exact role of CM1 on inflammation and its related mechanisms, since the identity of CM1 is still not clarified. In our previous study, we have already confirmed that soluble form of CM1 was produced by Raji. Therefore, we performed Q-TOF analysis after immunoprecipitation of concentrated Raji culture supernatant using anti-CM1 mAbs. Results: As a result, we found that CM1 is identical to enolase-1(ENO1), a glycolytic enzyme, and we confirmed that results by silencing ENO1 using siRNA. It was also confirmed through competition assay between anti-CM1 and anti-ENO1 mAbs. Finally, we investigated the possible role of CM1 in inflammatory response and cancer. The ligation of CM1 on Raji cells with anti-CM1 mAbs induces the extensive production of prostaglandin $E_2(PGE_2)$. In addition, the increased activity of matrix metalloproteinase (MMP)-2/9 was shown in NCI-N87, stomach cancer cell line by CM1 stimulation. Conclusion: CM1 is identical to ENO1 and it might be an important role in the regulation of inflammatory responses.

THE IMMUNE SUPPRESSIVE EFFECT FROM THE STRESS OF MAXILLOFACIAL OPERATIONS (구강악안면 영역의 수술이 인체내 세포면역성 억제에 미치는 영향)

  • Kim, Soung-Min;Lee, Suk-Keun
    • Journal of the Korean Association of Oral and Maxillofacial Surgeons
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    • v.29 no.2
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    • pp.108-115
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    • 2003
  • Suppression of cellular immunity is the host responses to surgical stress. When the body is exposed to surgical stress, decreased immunocyte function is one of the surgical stress-induced biologic responses. In all patients exposed to the surgical stress, peripheral blood lymphocyte numbers and function were suppressed until at least 2 weeks postoperatively. This immunosuppression was mainly due to a decrease of helper-inducer T cells, cytotoxic T cells, natural killer cells, and an increase of suppressor T cells. The blood levels of interleukin-6(IL-6) cytokine increase in response to surgical stress and cause an increase of so-called acute phase reactants, including C-reactive protein(CRP). In the previously damaged patients group, expected to early stress expose, immunosuppression was more developed than other normal groups. Cellular immunosuppression by surgical stress was mainly due to an increase of lymphocyte subsets that depress cellular immunity coupled with a decrease of the subsets that promote it. Overproduction of CRP in response to surgical stress may play an important role in the development of immunosuppression.

Effects of Hand Massage with Aroma Oil on Stress Responses and Serum Immunity of Registered Nurse during the Night Duty (아로마 손 마사지가 밤 근무 간호사의 스트레스 반응 및 IgA에 미치는 효과)

  • Lee, Hea-Sook;Hwang, Hea-Sook;Kim, Young-Ah
    • The Journal of Korean Academic Society of Nursing Education
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    • v.13 no.2
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    • pp.169-176
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    • 2007
  • Purpose: The purpose of this study was to verify the effect of aromatherapy hand massage on stress responses and serum Immunity of RN's before the night duty. Method: The data were collected during the period from Oct. 10 to Nov. 15, 2005 at S-Hospital in Seoul. There were forty-eight subjects, 24 for the experimental and 24 for the control group. A Pre & post test were conducted to measure pulse rate, perceived stress(level and score) and a blood sample for cortisol and IgA. In the experimental group, lavender and geranium were used. Data were analyzed by descriptive statistics, $x^2$-test and t-test with SPSS program. Result: The pulse rate was reduced but there were no significant differences between the two groups. Scores of subjective stress(VAS) decreased significantly after aromatherapy hand massage and the level of serum Cortisol was reduced significantly. The level of serum IgA was elevated significantly. Conclusion: Aromatherapy hand massage could be a useful intervention to reduce stress and elevate the immunity of nurses during the night duty.

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Study of the immunosuppressive activity of methanolic extract of Madhuca longifolia (Koenig)

  • V., Chitra;Ganesh, Dhawle;Shrinivas, Sharma
    • Advances in Traditional Medicine
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    • v.10 no.3
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    • pp.150-154
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    • 2010
  • The immunosuppressive activity of the Methanol extract of bark of Madhuca longifolia (Koenig) consisting of a mixture of saponins, flavonoids, tannins, steroids, phenol and glycosides was studied on the immune responses in mice. Methanol extract of Madhuca longifolia (MLL) was administered orally at doses of 50, 100 and 150 mg/kg/day to healthy mice divided into four groups consisting of six animals each. The assessment of immunomodulatory activity was carried out by testing the humoral (antibody titre) and cellular (foot pad swelling) immune responses to the antigenic challenge by sheep RBCs. Furthermore, the effect on hematological parameters as well as relative organ weight was determined. On oral administration MML showed a significant decrease delayed type hypersensitivity (DTH) response whereas the humoral response to sheep RBCs was unaffected. Thus MLL significantly suppressed the cellular immunity by decreasing the footpad thickness response to sheep RBCs in sensitized mice. With a dose of 100 and 150 mg/kg/day the DTH response was $7.66{\pm}2.75$ and $6.41{\pm}1.21$ respectively in comparison to corresponding value of $14.50{\pm}2.38$ for untreated control group. These differences in DTH response were statistically significant (P < 0.05). The study demonstrates that MLL shows preferential suppression of the components of cell-mediated immunity and shows no effect on the humoral immunity.