• Archives of Pharmacal Research
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• 제21권6호
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• pp.769-773
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• 1998

Brazilin was examined for its effects on the induction of immunological tolerance. Brazilin was administered to C57BL/6 female mice for 2 consecutive days before the immunization with high dose SRBC (109 cells) which can produce immunological tolerance. Delayed type hypersensitivity, IgM plaque forming cells, ConA induced IL-2 production and mitogen- or antigen-induced proliferation of lymphocytes were measured as evaluation parameters. Administration of brazilin prior to immunization could keep the DTH and IL-2 production almost optimaly immunized levels. Brazilin also inhibited the elevation of non-specific suppressor cell activity. ConA induced proliferation of splenocytes in high dose SRBC immunized mice was significantly decreased by pretreatment of brazilin. And this might be one of the reason for augmentation of DTH by brazilin. However, IgM plaque forming cells were not affected by the treatment of brazilin. These results indicate that brazilin prevents the induction of mmunological tolerance caused by high dose SRBC by suppressing the elevation of suppressor cell activity and by inhibiting the decrease in IL-2 production in C57BL/6 female mice.

• 약학회지
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• 제38권6호
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• pp.806-813
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• 1994

These experiments were conducted to investigate the effects of Cervi cornu extract on lymphocyte blastogenesis in spleen, thymus, lymph node, born marrow cells of Balb/c mouse, haemagglutination reaction against sheep red blood cell (SRBC), plaque forming cell (PFC) assay against SRBC and IL-2 production. Lymphocyte blastogenesis was determined by $[^3H]-thymidine$ incorporation. According to the lymphcoyte blastogenesis test on the immune cell. Ceriv cornu extrat was showed a potent mitogenic activity on the spleen and lymph node cells, but had mild mitogenic activity on the thymus and born marrow cells. Mitogenic active component of Crevi cornu extract was identified to be materials where molecular weights are higher than 5,000 by membrane filteration method. Cervi cornu extrat was shown to increase mitogenic effect on the lipopolysaccharide (LPS)-stimulated spleen cells significantly, but decrease mitogenic effect on the Con A stimulated spleen cell at the concentration 0.3%, 1% and 3%. Ceriv cornu extract didn't show to be haemagglutination reaction and showed to inhibit the Con A-induced haemagglutination reaction against SREC. Result of SRBC-PEC test. Ceriv cornu extract significantly increase the number of PEC at the concentration of 0.1% and 1%. When IL-2 or IL-4 production was determined by proliferation of CTLL-2 cells. Ceriv cornu extract was not shown to stimulate the production of IL-2. From the above results, it is shown that Ceriv cornu extract increased antibody production by B cells, but nor IL-2 production by helper T cells.

• 한국환경보건학회지
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• 제21권3호
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• pp.16-22
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• 1995

This study was designed to investigate the antibody production to sheep red blood cells(SRBC) and proliferation of mitogen-stimulated spleen cells in Balb/c mice which received cadmium chloride. The mice were divided into three independent groups which were one control and two experimental groups by the cadmium treatment or not. No specific treatment was done for the control group. One of two experimental groups, which is called 'pre-treatment group' in this paper, was subcutaneously injected with low dose of cadmium chloride(0.5 mg/kg/day) for 5 consecutive days before the primary SRBC immunization. The other called 'non-pretreatment group' was only pretreated with normal saline. Both experimental groups were intraperitoneally injected with high dose of cadmium chloride(5 mg/kg) 8 hours before the primary immunization. Mice were intraperitoneally immunized twice with 2% SRBC suspension containing $10^8$ cells. The results obtained were as follows, 1. The PFG responses to SRBC were significantly increased in two experimental groups, cadmium pretreatment and non-pretreatment compared with that of control group(p<0.05). 2. The total antibody titers to SRBC in cadmium treated groups were similar to that of control group, but titers of IgG antibody were significantly elevated(p<0.01). 3. The proliferation response of spleen lymphocytes to various mitogens was suppressed in proportion to the concentration of cadmium and the degree of cadmium accumulation in liver was increased in the cadmium treated groups. These results suggest that cadmium chloride could affect on mouse immune response, especially its cell mediated immune response could be decreased while its humoral immune response could be increased, which may not be influenced by the administration methods or pretreatment of cadmium to mouse.

• 한국식품영양학회지
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• 제21권3호
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• pp.269-274
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• 2008

Plants have long been used as a food source in Korea. In this study, we investigated the combined immunomodulative effects of a water extract mixture of(pine needles, Sedum sarmentosum Bunge, hijkiaorme, buckwheat and Peril a leaves) on Balb/c mice $7{\sim}8$ weeks old. The mice were fed a chow diet ad libitum and the plant extract was orally administered every other day for four weeks at two different concentrations(50 and 500 mg/kg BW). After preparing the single-cell suspension, splenocyte proliferation was determined by the MTT(3-[4,5-di-methylthiazol-2-y]-2,5-diphenyl terazolium bromide) assay. After 48hrs of incubation with the mitogens(ConA or LPS) splenocyte from the mice groups administered 50 and 500 mg/kg BW of the plant extract showed a significant increased in proliferation compared to the control group. A hemolytic plague forming cell assay was used to indicate antibody production against sheep red blood cells(SRBC). The number of antibody-secreting cells T-dependent antigen. The result of this study suggest that supplementation with this plant extract may regulate immune function by increasing splenocyte proliferation and the number of plaque forming cells.

• 대한영양사협회학술지
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• 제11권1호
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• pp.44-50
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• 2005

Natural products are increasingly appreciated as a lead for drug discovery and development. A number of investigators have studied various activities of natural products and have found that they have not only nutritional effects but also beneficial properties to cure various diseases and to maintain good health. Job's Tear(Yul-Moo) is a grass crop that have long been used in traditional medicine and a nourishing food. Job's Tear has been reported to exhibit anti-inflammatory, stomachic, antiallergic activity, and antispastic effects and has been used in China for the treatment of warts, rheumatism, and neuralgia although its mechanism remains unclear. Previous results in our laboratory demonstrated that the ethanol extract and water extract of Job's Tear exerted an immune regulatory function on mice cells in vitro. The present study was performed to investigate the ex vivo effect of Job's Tear on immune function. Seven to eight weeks old mices(Balb/c) were fed ad libitum on chow diet and water extract of Job's Tear were orally administrated every other day for two or four weeks at two different concentrations (50 and 500mg/kg B.W.). Proliferation of mice spenocytes and antibody production to sheep red blood cells(SRBC) using hemolytic plague forming cell assay were used to indicate the immune activity. Splenocytes proliferation of Job's Tear with mitogen stimulation such as Con A and LPS was enhanced at 50 mg/kg B.W. concentrations compared to those of control group. In case of antibody production to sheep red blood cells, the number of antibody- secreting cells was increased by administration of 50mg/kg B.W. concentration in mice immunized as a T-dependent antigen. From the present study, Job's Tear water extracts may be suggested to stimulate the mice immune response by enhancing the splenocytes proliferation and the number of plague forming cells.

• 대한미생물학회지
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• 제15권1호
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• pp.63-69
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• 1980

C. parvum은 면역학적(免疫學的) 연구(硏究)에 immunomodulating agent로서 광범위(廣範圍)하게 이용(利用)되고 있기 때문에 C. parvum이 SRBC에 대(對)한 면역반응(免疫反應)에 미치는 영향(影響) 및 그 기전(機轉)을 알아보고자 본(本) 실험(實驗)을 실시(實施)한 결과(結果) 다음과 같은 성적(成績)을 얻었다. C. parvum이 SRBC에 대(對)한 DTH에 미치는 영향(影響)은 C. parvum 투여시기(投與時期)에 따라 상이(相異)한 결과(結果)를 나타내었는데 C. parvum을 SRBC로 면역전(免疫前)에 정맥내(靜脈內)로 투여(投與)했을 때 유의(有意)있는 지연성(遲延性) 과민반응(過敏反應)(DTH)의 감소(減少)를 보였으며 이러한 현상(現象)은 cyclophosphamide로 처리(處理)했을 때 완전(完全)히 소실(消失)되었다. 또한 C. parvum은 S. typhimurium의 증식(增殖)을 억제(抑制)하고 비장(脾臟) 및 간장종대(肝臟腫大)를 야기(惹起)시켰는데 이러한 사실(事實)로 미루어 C. Parvum의 DTH 감소현상(減少現象)은 suppressor T 세포(細胞) 또는 활성화(活性化)된 대식세포(大食細胞)의 중개(仲介)에 의한 것으로 사료(思料)되었다. C. parvum은 SRBC에 대(對)한 항체가(抗體價)에 유의(有意)있는 영향(影響)을 미치지 못하였다.

• Journal of Acupuncture Research
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• 제22권2호
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• pp.83-92
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• 2005

Objective: Although the effect of Ulmus davidiana Planch (UD) extracts on collagen-induced-arthritis (CIA) and bone metabolism has been studies, research on its effect on human immunomodulatory activity is further a due. The objective of the present study was to investigate the immunomodulatory activity of UD on cellular and humoral immunity. Methods : Oral administration of the ethanolic and water extracts of UD, at doses of 20, 100 and 200 mg/kg in mice, dose dependently potentiated the delayed type hypersensitivity reaction induced both by sheep red blood cells (SRBC) and oxazolone. Results : It significantly enhanced the production of circulating antibody titre in response to SRBC in mice. Extracts of UD failed to show any effect on macrophage phagocytosis. Chronic administration of UD extracts significantly ameliorated the total white blood cell count and also restored the myelosuppressive effects induced by cyclophosphamide. Conclusion : The present investigation reveals that UD extracts possesses immunomodulatory activity.

• 대한한방소아과학회지
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• 제8권1호
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• pp.1-12
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• 1994

In order to investigate the effects of Insamyangwee Tang on cell-mediated and humoral immune response, solid extract of Insamyangwee Tang (sample A), mixture of individual solid extract of Insamyangwee Tang (sample B) were administered orally for 14 days. The auther used ICR mice having a body weight of about 20-22g as experimental animals dividing them into three groups-Saline, Sample A and Sample B group. All of the mice were sensitized i.v. with $10^8$ sheep red blood cells(SRBC) and challenged i.d. with $10^8$ SRBC 4 days later. Such immune responses as delayed-type hypersensitivity(DTH), rosette forming cells(RFC), hemagglutinin titers(HA titers) and hemolysin titers(HL titers) were measured at 24 hours after challenge. The results were as follow: 1. DTH in Sample A & Sample B group was increased, as compared with Saline group, with satistical significance. 2. RFC in Sample A & Sample B group were increased, as compared with Saline group, with statistical significance. 3. HA titers in Sample A & Sample B group were not increased, as compared with Saline group, with statistical significance. 4. HL titers were increased just only in Sample A group with statistical significance. The inference from the above results is that Sample A group is better than Sample B group, and Insamyangwee Tang enhance the cell-mediated and humoral immune response.

• Environmental Analysis Health and Toxicology
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• 제5권3_4호
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• pp.37-45
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• 1990

Experiments were performed on mice to investigate the influences of cimetidine, ranitidine and famotidine on the immune response. Immune response were evaluated by antibody, Arthus reaction (Arthus), delayed type hypersensitivity (DTH), rosette forming cell (RFC), phagocyte activity and whit( blood cell (WBC) in mice, sensitized and challenged with sheep red blood cells (SRBC). The weight of liver, spleen and thymus were measured. Following results obtained in this experiment. 1) The administration of cimetidine as compared to normal group significantly decreased Arthus, Hemagglutinin titer (HA), RFC, DTH, WBC and phagocyte activity, but increased the activity of serum albumin. 2) The administration of ranitidine as compared to normal group decreased RFC and HA. 3) The administration of Famotidine as compared to normal group decreased DTH and RFC, and significantly decreased HA, Arthus and serum protein. 4) The administration of ranitidine and famotidine decreased more humoral immune response than cellular immune response, but the administration of cimetidine significantly decreased humoral and cellular immune response, WBC and phagocyte activity.

• 대한미생물학회지
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• 제14권1호
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• pp.71-78
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• 1979

Phytohemagglutinia(PHA) 단독투여(單獨投與) 및 PHA와 Cyclophosphamide(CY)의 동시투여(同時投與)가 마우스의 세포성(細胞性) 및 체액성면역(體液性免疫)에 미치는 영향(影響)을 알아보고저 면양적혈구(緬羊赤血球)(SRBC)로 마우스를 면역(免疫)하기 전에 PHA 및 CY를 투여(投與)하여 말초혈액(末梢血液)의 총(總) 백혈구수(白血球數)와 백혈구백분율검사(白血球百分率檢査), SRBC로 유도(誘導)한 족척종창반응검사(足蹠腫脹反應檢査) 및 비장세포(脾臟細胞)의 rosette 형성검사(形成檢査)를 실시(實施)하였으며 아울러 SRBC에 대(對)한 응집소항체가(凝集素抗體價) 및 용혈소항체가(溶血素抗體價)를 측정(測定)하였다. 그 결과(結果) PHA를 투여(投與)한 마우스군(群)의 면역반응(免疫反應)은 대체(大體)로 감소(減少)되었다. CY만을 투여(投與)한 마우스군(群)의 체액성면역반응(體液性免疫反應)은 감소(減少)되었으나 세포성(細胞性) 면역반응(免疫反應)은 증가(增加)되었다. 이에 반(反)하여 CY 투여전(投與前)에 PHA로 마우스를 전처리(前處理)한 경우 체액성면역반응(體液性免疫反應) 뿐만 아니라 세포성(細胞性) 면역반응(免疫反應)도 감소(減少)되었는데 이 면역반응(免疫反應)의 감소(減少)는 PHA를 CY 투여(投與) 5일전(日前)에 전처리(前處理)한 마우스군(群)에서 가장 현저(顯著)하였다.