• 한국약용작물학회지
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• 제26권1호
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• pp.8-18
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• 2018

Background: This present study was conducted to evaluate the anti-inflammatory and immune regulatory effects of Aucklandia lappa Decne (AL). Methods and Results: We measured cytotoxicity, nitric oxide (NO) content, mRNA expression (iNOS, IL-1${\alpha}$, IL-$1{\beta}$, and TNF-${\alpha}$), protein expression (iNOS, COX-2, and $I{\kappa}B$) and phagocytic activity in RAW264.7 cells. Male BALB/c mice were fed 100 mg/kg AL (Aucklandia lappa Decneon 70% ethanol extract) and 250 mg/kg AL for 4 weeks; thereafter, we observed B/T or $CD4^+/CD8^+$ lymphocyte subpopulation change, and expression patterns of $CD4^+$ and $CD8^+$ lymphocytes by immunohistochemical staining in mouse splenocytes and/or thymocytes. To determine the experimental concentration of AL, cell viability was measured by MTT assay and tested at $12.5{\mu}g/m{\ell}$ or less. AL inhibited the levels of NO, lymphokine production (IL-$1{\beta}$, and TNF-${\alpha}$), and mRNA (iNOS, IL-1${\alpha}$, IL-$1{\beta}$, and TNF-${\alpha}$) and protein (iNOS, and COX-2) expression. Additionally, the levels of $I{\kappa}B$, phagocytic activity, and splenic and thymic T lymphocytes, especially $T_H$ and $T_C$ cells were significantly increased in AL administered mice. The immuno-reactive density of $CD4^+$ and $CD8^+$ lymphocytes was stronger in AL groups than in the normal group. AL stimulated NO, iNOS, and COX-2, and regulated IL-1${\alpha}$, IL-$1{\beta}$, TNF-${\alpha}$, and $I{\kappa}B$ in macrophages treated with LPS (lipopolysaccharide). In addition, AL increased the phagocytic activity of macrophages and the immunity of mouse T ($T_H$, and $T_C$) cells. Conclusions: These results suggested that AL might show anti-inflammatory activity via the suppression of various inflammatory markers and immuno-regulatory activity.

• 동의생리병리학회지
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• 제20권2호
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• pp.428-435
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• 2006

Cortex Mori radicis has been used as a components of antidiabetics, antiasthma and diuresis in Oriental Medicine. This experiment examined the effect of an extracts, obtained from the acetone(CM-A) and aqueous(CM-W) extracts of Cortex Mori radicis, on hair growing activity of the C57BL/6N mice after topical application to skin. We investigated the number of hair follicle and mast cells, and changes of subpopulation of splenocytes and thymocytes in skin for 16 day. The results were as follows : The Hair growing effect in experimental groups was more increased in 85%(CM-A) and 90%(CM-W) than control group(10%) in hair depilated area. The number of hair follicle in experimental groups(CM-A and CM-W) was more increased than control group. Splenic B/T lymphocytes of CM-A group were decreased compare to control group. CD4/CD8 positive TH cells in splenic T lymphocytes of CM-W group were increased compare to control group. These results suggest that CM-A and CM-W may be used in treatment of alopecia areata.

• 한국약용작물학회지
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• 제10권5호
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• pp.327-332
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• 2002

This study was conducted to investigate the immuno-regulatory effect and apoptosis of L1210 and HL60 leukemia cells of methanol-extracts of Cornus kousa Burg(CKB). The proliferation of mouse splenocytes and thymocytes enhanced by the addition of $10\;{\mu}g/ml$ of CKB. CKB were administered p.o. once a day for 7 days in adult male BALB/c mice. CKB increased the splenic and thymic T lymphocytes, especially the number of $T_H$ cells markedly increased by the treatment of CKB. CKB treatment induced the apoptotic cell death in L1210 mouse leukemia and HL60 human leukemia cells. In addition, CKB also accelerated the phagocytic activity in peritoneal macrophages and increased the production of plaque forming cells. These results suggest that CKB have an various immuno-regulatory property.

• 대한의생명과학회지
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• 제2권1호
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• pp.13-20
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• 1996

최근 세포 표면의 다양한 항원들이 발견되고T세포 아형에 대한 정량적 측정이 가능하게 됨에 따라 세포성 면역기전의 규명과 이해에 획기적인 진전을 보이고 있다. T세포 아형의 phenotype은 실험 동물의 모델(model)이나 종(species)에 따라서 다양하며 차이가 나는 것으로 알려져 있다. 우리 나라의 경우 아직도 80만명 이상의 국민이 간 흡충에 감염되어 있을 것으로 추정되는 문제의 기생충이며 감염상태가 만성적일 때에는 간 경화나 간암으로까지 진행되는 흡충으로서 이에 대한 대책이 요구되고 있다. 그동안 간 흡충의 면역에 대한 연구는 체액성 면역에 대한 연구는 많은 규명과 진전이 있어 왔으나 세포성 면역에 대한 기전이나 특성에 대한 연구는 미미한 상태이다. 저자들은 이와 같은 사정을 감안하여 마우스를 실험 모델로 할 때에 요구되는 참고 자료와 기본 정보를 구하고자 하였다. 즉, 간흡충에 대한 세포 면역학적인 일부의 특성을 알아 보았으며,특히 비장 림프구 아형에 대한 phenotype의 특성을 알아 본 결과 다음과 같은 성적을 얻었다. 간흡충의 조항원을 면역증강제와 함께 복강 투여한 후 기간 별로 비장 림프구의 아형 특성을 flow cytometry로 측정한 결과, CD2, CD5 그리고 CD8는 투여 초기에는 감소하다가 투여 7주 후에 다시 증가하는 현상을 보였으며, CD4의 경우 투여 초기에는 약간 증가하다가 투여 7주 후에 다시 증가하는 성적을 보였다.

• Natural Product Sciences
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• 제13권2호
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• pp.123-127
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• 2007

We investigated effect of small black soybean fraction (SBSF) T cell-mediated responses for tumor surveillance and proliferation in leukemia cells in vitro. Each SBSF butanol fraction (SBSFBu) and SBSF chloroform fraction (SBSFCh) was administered p.o. once a day far 21 days in BALB/c mice and then levels of serum cytokines and subpopulation of lymphocytes were measured. Moreover, SBSF fraction was treated into the cultured various cell lines for proliferation in leukemia cell lines, NO production by RAW264.7 cells, and expression of p53 gene in U937 leukemia cells. These results showed that SBSFBu increased levels of serum IL-4but not IL-2 and IFN-${\gamma}$, and increased expression of CD4$^+$ T cells and CD8$^+$ T cells in splenocytes in vivo, while SBSFCh increased levels of serum IL-2 and IFN-${\gamma}$ but decreased IL-4, and increased CD8$^+$ T cells but not CD4$^+$ T cells. Moreover, both of SBSFBu and SBSFCh inhibited proliferation of HL60, U937, and L1210 leukemia cell lines in a dose-dependent manner, up-regulated NO production by RAW264.7 cells in a dose-dependent manner, and enhanced expression of p53 gene in U937 leukemia cells. Our findings indicate that SBSFBu and SBSFCh may enhance T cell-dependent immune responses, and that both of SBSFBu and SBSFCh may inhibit proliferation of leukemia cells by up-regulation of NO production and expression of p53 gene.

• 동의생리병리학회지
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• 제18권1호
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• pp.63-68
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• 2004

The purpose of this research was to investigate the effect of Sabaek-San(SBS) on the activity of immune cell and leukemia cell. The addition of SBS(1 ㎍/㎖) enhanced the proliferation of cultured-splenocytes and thymocytes. And also, administration of SBS(250, 500 mg/kg) accelerated subpopulation of splenic T lymphocytes in BALB/c mice. Administration of SBS eminently enhanced the production of IFN-γ, and IL-4. The treatment of high dose of SBS inhibit the proliferation of Jurkat cells and dose-dependently increased the apoptosis of cultured-Jurkat leukemia cells. These results suggest that SBS have a cell mediated immuno-regulatory effect.

• 대한수의학회지
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• 제50권3호
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• pp.179-185
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• 2010

The present study was undertaken to establish reference values for the composition blood lymphocyte populations and compare forty three Hanwoo neonatal calves (KC) with twenty one Holstein calves (HC) by blood cell count and immunophynotying. The percentages of CD2+, CD4+, CD8+, CD26+, ACT2+, MHC class, MHC class II and WC1+ T cells, B cells were determined by flow cytometry. The number of lymphocyte and monocyte in HC were higher than those of KC. However, the number of neutrophils was higher in HC than KC. The proportions of CD2+, CD4+, CD8+, MHC class, and WC1+ lymphocytes remained relatively stable during the study period, while there was a moderate increase in the relative percentage of CD26+, ACT2+, MHC class II and B cell from birth to approximately 3 weeks of age. Marked differences in the relative proportions of the lymphocyte subpopulations were noted between the individual calves. The present study shows that the T-cell subpopulations are present in peripheral blood of KC at levels comparable with HC, while the MHC class II and B cell population of KC increases significantly with age. The absolute number of WBC in KC was due to the decrease of absolute number of neutrophil rather than the increase of lymphocyte. The results indicated that KC have significantly higher number of neutrophils, and proportion of MHC class II and B cell than HC.

• 대한미생물학회지
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• 제10권1호
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• pp.1-8
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• 1975

Despite a number of recent studies on appendix its function appears to remain unknown. The present studies were undertaken in order to extend and confirm the previous studies concerning the role of appendix in immune response. An early hemagglutinin response of mercaptoethanol sensitive antibody(IgM antibody) in rabbit injected intravenously(i.v.) with 200mcg of bovine gamma globulin(BGG) was abolished by lethal whole body irradiation(900 r), but preserved in animals whose appendix and bone marrow were shielded during irradiation. Late formation of mercaptoethanol resistant antibody(IgG antibody) and the development of memory in bone marrow shielded animals were not affected by irradiation of the appendix. Formation of either IgM or IgG antibody to sheep red blood cells(SRBC) injected i.v. as determined by direct plaque forming cell(DPFC) technique in spleen were effectively abolished by appendectomy, thymectomy, or both followed by irradiation. When bone marrow was shielded in combination with autologous appendix reconstitution, DPFC response was about 5 times greater than the sum of two. Lysed appendix cells failed to restore the response. Lethally irradiated rabbits restored with combination of autologous appendix and thymus cells showed DPFC responses which were essentially normal. Three pools of appendix were obtained by manual separation technique and were stimulated with soluble concanavalin A(Con A), phytohemagglutinin-P(PHA) and pokeweed mitogen(PWM). Rabbit appendix cells responded to Con A, PHA and PWM. Cells of thymus dependent area(TDA) of the appendix were relatively enriched in their response to T cell mitogens compared to dome and follicle cells. The PHA/Con A responsive ratio of appenix TDA subpopulation was high, indicating that Con A responsive cells have a wider distribution among appendix. This finding showed that interfollicular area of the appendix is thymus-dependent. The present studies confirmed other evidence that the rabbit appendix cells itself are unable to form antibody and T lymphocytes in appendix TDA may be heterogenous, and that the appendix cells are synergistic with either bone marrow or thymus cells in the early hemagglutinin on splenic antibody response to BGG or SRBC.

• Tuberculosis and Respiratory Diseases
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• 제45권1호
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• pp.90-98
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• 1998

연구배경: 외인성 천식은 TH2세포에 의한 매개체의 주요 원인중 하나임이 밝혀지고 있다. 연구자 등은 증상 악화로 내원한 기관지천식 환자와 만성기관지염 환자 사이에 T 림프구 아형의 변화와 싸어토카인 (cytokine)들의 변화에 차이가 있는지 연구하고자 하였다. 방 법: 기관지 천식으로 치료중인 환자 중에서 천식 악화로 내원한 외인성 천식 15예와 만성기관지염 환자 12예, 그리고 정상인 5예를 대상으로 하였다. 환자의 병력과 임상소견, 피부반응검사, 그리고 특이 IgE 측정을 시행하고 단일항체인 CD62L를 이용하여 flow cytometer로 림프구아형을 분석하고 ELISA kit(Quantikine IL-4, IFN-$\gamma$)를 이용하여 IL-4, IFN-$\gamma$을 측정하였다. 결 과: CD4+ T 림프구는 기관지천식환자에서 $40{\pm}7.2%$ 만성기관지염 환자 $43{\pm}19.8%$, 정상인에서 $41{\pm}14%$로 기관지 천식환자와 다른 군간에 의미있는 차이는 없었다(p=0.49, p=0.75). CD62L(L-selectin) 양성 T 림프구의 세포 백분율은 기관지천식환자(n=7) 에서 $24.8{\pm}23.6%$였고, 만성기관지염환자(n=5) $17.0{\pm}16.9%$, 정상인(n=5) $16.7{\pm}16.4%$으로 기관지천식환자와 다른 군간에 의미있는 차이는 없었다(p=0.32, p=0.22). 혈청 IL-4 의 활성도는 기관지천식환자에서 $3.6{\pm}0.9pg/ml$ 만성기관지염 환자 $2.0{\pm}1.2pg/ml$, 정상인에서 $0.7{\pm}1.1pg/ml$로 기관지 천식환자에서 만성기관지염 환자군에 비하여 증가되어 있었으며 (p=0.02) 정상인보다 증가되어 있었다(p=0.006)(Fig. 4). 혈청 INF-$\gamma$의 활성도는 증가되지 않았다. 결 론: 결론적으로 CD62L 양성 T 림프구의 세포 백분율은 기관지천식환자에서 증가되어 있지 않았으며 혈청 IL-4의 활성도는 기관지천식환자에서 증가되어 있었다.

• Journal of Microbiology and Biotechnology
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• 제31권5호
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• pp.667-675
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• 2021

Streptococcus agalactiae is an important bacterial pathogen and causative agent of diseases including neonatal sepsis and meningitis, as well as infections in healthy adults and pregnant women. Although antibiotic treatments effectively relieve symptoms, the emergence and transmission of multidrug-resistant strains indicate the need for an effective immunotherapy. Effector T helper (Th) 17 cells are a relatively newly discovered subpopulation of helper CD4⁺ T lymphocytes, and which, by expressing interleukin (IL)-17A, play crucial roles in host defenses against a variety of pathogens, including bacteria and viruses. However, whether S. agalactiae infection can induce the differentiation of CD4⁺ T cells into Th17 cells, and whether IL-17A can play an effective role against S. agalactiae infections, are still unclear. In this study, we analyzed the responses of CD4⁺ T cells and their defensive effects after S. agalactiae infection. The results showed that S. agalactiae infection induces not only the formation of Th1 cells expressing interferon (IFN)-γ, but also the differentiation of mouse splenic CD4⁺ T cells into Th17 cells, which highly express IL-17A. In addition, the bacterial load of S. agalactiae was significantly increased and decreased in organs as determined by antibody neutralization and IL-17A addition experiments, respectively. The results confirmed that IL-17A is required by the host to defend against S. agalactiae and that it plays an important role in effectively eliminating S. agalactiae. Our findings therefore prompt us to adopt effective methods to regulate the expression of IL-17A as a potent strategy for the prevention and treatment of S. agalactiae infection.