• Archives of Pharmacal Research
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• 제22권3호
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• pp.255-261
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• 1999

The effect of biphenyl dimethyl dicarboxylate (PMC) on the cellular and nonspecific immunosuppressions by ketoconazole (KCZ) was investigated in ICR mice. PMC at a dose of 6 mg/kg was administered orally to mice daily for 14 consecutive days. KCZ was suspended in RPMI 1640 medium and orally administered at 160 mg/kg/day 2 hrs after the administration of PMC. Immune responses of the delayed-type hypersensitively (DTH) reaction to sheep red blood cells (SRBC), phagocytic activity and natural killer (NK) cell activity were evaluated. DTH reaction to SRBC was enhanced to normal level by the combination of PMC and KCZ, as compared with treatment of KCZ alone. In the combination of PMC and KCZ, as compared with treatment of KCZ alone, there were also significant increases in activities of natural killer (NK) cells and phagocytes along with circulating leukocytes. These findings indicate that PMC shows a significant restoration from the immunotoixc status induced by KCZ.

• 대한수의학회지
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• 제36권4호
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• pp.839-844
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• 1996

카드뮴이 마우스의 체액성 면역능에 미치는 영향을 평가하고자 BALB/c 마우스를 대상으로 0, 25, 50, 100 및 200ppm의 카드뮴이 첨가된 음료를 6~7주간 자유급식시킨 후 면양적혈구로 면역시켜 마우스의 항체생산능에 대한 카드뮴의 영향을 평가하였다. 1. 1차 면역동물 비장세포중 용혈반형성 세포수는 대조군에 비하여 모든 실험군에서 유의하게 감소하였다(p<0.01). 그러나 2차 면역동물 비장세포중 용혈반형성 세포수는 대조군에 비하여 실험군에서 다소 증가하였다. 2. 2차 면역반응에서의 SRBC에 대한 총항체가는 대조군에 비하여 실험군에서 증가하는 경향을 보였으며, IgG 항체반응은 50ppm 투여군을 제외하고 모든 실험군에서 조금씩 증가하였다. 3. 혈청내 $IgG_1$ 및 IgE 농도는 대조군에 비하여 모든 실험군에서 증가하였는데 특히 $IgG_1$의 증가가 지명하였다. 이상의 결과를 전보와 연계시켜 보면 카드뮴이 농도에 따라서는 생체내의 세포성 면역에서 중요한 역할을 하는 대식세포와 T세포 아군의 기능 또는 분포도 등을 변화시킴으로써 항체생산능에 영향을 미칠 수 있음을 시사한다.

• 동의생리병리학회지
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• 제19권1호
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• pp.69-74
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• 2005

In Oriental medicine the primordial Qi and the defensive Qi are considered as important for immunity. Therefore it is anticipated that the improvement of the primordial Qi and the defensive Qi can enhance the ability of immune cells. This experiment was conducted to investigate how Ginseng Radix, Astragali Radix, Atractylodis Rhizoma Alba, Glycyrrhizae Radix, representative of Qi tonifying herbs, affect the immune system in terms of controlling and balancing immune cells. Using the MTS assay, increased proliferations were observed from herbal treated cells, among which Gins-eng showed the highest proliferation. When splenocytes were activated with anti-CD3 plus herbal extracts, levels of IFN-g and IL-4 were increased but those of IL-2 showed little change compared with the control cells. Levels of IL-2, IFN-g and IL-4 were increased in purified CD4 T cells when activated with anti-CD3/anti-CD28 but at $100\;{\mu}g/ml$ of Astragali and Atractylodis, levels of IL-2 were decreased by 11% and 42%, respectively and those of IFN-g were decreased by 55% and 12%, respectively. Under Th1/Th2 polarizing conditions, levels of IFN-g in Th1 cells treated with herbal extracts were all decreased but when it comes to IL-4, its levels were increased in Ginseng and Glycyrrhizae treated cells but decreased in Astragali and Atractylodis treated cells. Taken together, the data show that compared with other qi tonifying herbs, Ginseng and Glycyrrhizae have a tendency to favor Th2 cell differentiation in vitro.

• 생약학회지
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• 제22권4호
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• pp.233-239
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• 1991

Phellinus linteus was examined for its anticancer activity using an animal model. Water extract of Phellinus linteus was prepared from artificially cultivated mycelia. Neither toxicity nor abnormal changes of hematological parameters were observed in the rat given orally with high doses of drug extract for 15 days. ICR mice were transplanted with Sarcoma-180 tumor cells intraperitoneally and drug extract was daily given to the mice from 1 day after tumer transplantation for 3 weeks. Administration of drug extract significantly prolonged the survival duration of Sarcoma 180-transplanted mice. For the better understanding of the anticancer activity, we have examined the effect of the drug extract administration on various killer cell functions, such as natural killer(NK) cells, cytotoxic T-lymphocytes (CTL) and macrophages which have been known to be main effector cells in immune responses against tumors. The results from the 4 hr $^{51}Cr-release$ assay have shown that the drug extract augments mouse NK cell activity but neither CTL nor macrophages. It is possible, then, that the anticancer activity of the Phellinus linteus may be associated with augmentation of NK cell function in the cancerated hosts.

• BMB Reports
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• 제47권2호
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• pp.60-68
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• 2014

Psoriasis is a chronic inflammatory disorder characterized by an erythematous scaly plaque of the skin and is occasionally accompanied by systemic complications. In the psoriatic lesions, an increased number of cytokine-producing dendritic cells and activated T cells are observed, which indicate that psoriasis is a prototype of an immune-mediated dermatosis. During the last decade, emerging studies demonstrate novel roles for the dendritic cell subsets in the process of disease initiation and maintenance of psoriasis. In addition, recently discovered anti-psoriatic therapies, which specifically target inflammatory cytokines produced by lesional dendritic cells, bring much better clinical improvement compared to conventional treatments. These new therapies implicate the crucial importance of dendritic cells in psoriasis pathogenesis. This review will summarize and discuss the dendritic cell subsets of the human skin and their pathophysiological involvement in psoriasis based on mouse- and patient-oriented studies.

• 한국발생생물학회지:발생과생식
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• 제7권1호
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• pp.15-22
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• 2003

Fas는 세포자연사를 유도하는 세포 표면 수용체 단백질로서 면역계에서 중요한 역할을 한다. 이러한 Fas mRNA는 림프조직뿐만 아니 라 비 림프조직에서도 발현한다. 한편 대다수의 난포들은 세포자연사와 연관된 기 작을 통해 난포폐쇄로 진행되는 것으로 알려지고 있으나, 난포폐쇄에 관한 기작은 아직 규명되지 않았다. 따라서 본 연구의 목적은 먼저 생쥐의 난소의 과립세포와 난자에서 Fas와 Fas ligand의 발현 여부를 알아보고, Fas와 Fas ligand발현과 난포폐쇄와의 상관 관계를 알아보고자 하였다. RT-PCR을 수행한 결과, 난소내 과립세포와 난자에서 Fas와 Fas ligand mRNA가 모두 발현하는 것을 확인할 수 있었다. 면역조직화학적 염색 결과 또한, 원시 난포를 제외한 모든 발달 중인 난포의 과립세포와 난자들에서 Fas와 Fas ligand가 검출되는 것을 확인하였고, 특히 폐쇄를 보이는 난포에서 강한 발현을 보였다. 한편, 난소에서 세포자연사를 확인하기 위해 TUNEL 염색을 수행한 결과, TUNEL 양성을 보이는 과립세포와 난자의 수는 건강한 정상 난포에 비해 폐쇄난포에서 증가하는 것을 관찰할 수 있었다. 이상의 결과들은 난소내 과립세포와 난자에서 Fas와 Fas ligand 발현과 난포폐쇄와 상관 관계가 있음을 보여주고 있으며, 이러한 Fas와 Fas ligand가 생쥐 난소내 난포폐쇄 유발에 관여하고 있을 것으로 사료된다

• Journal of Microbiology and Biotechnology
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• 제29권11호
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• pp.1693-1706
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• 2019

Atopic dermatitis (AD) is a chronic inflammatory skin disease of mainly infants and children. Currently, the development of safe and effective treatments for AD is urgently required. The present study was conducted to investigate the immunomodulatory effects of yeast-extracted β-1,3/1,6-glucan and/or Lactobacillus plantarum (L. plantarum) LM1004 against AD-like symptoms. To purpose, β-1,3/1,6-glucan and/or L. plantarum LM1004 were orally administered to AD-induced animal models of rat (histamine-induced vasodilation) and mouse (pruritus and contact dermatitis) exhibiting different symptoms of AD. We then investigated the treatment effects on AD-like symptoms, gene expression of immune-related factors, and gut microbiomes. Oral administration of β-1,3/1,6-glucan (0.01 g/kg initial body weight) and/or 2 × 10¹² cells/g L. plantarum LM1004 (0.01 g/kg initial body weight) to AD-induced animal models showed significantly reduced vasodilation in the rat model, and pruritus, edema, and serum histamine in the mouse models (p < 0.05). Interestingly, β-1,3/1,6-glucan and/or L. plantarum LM1004 significantly decreased the mRNA levels of Th2 and Th17 cell transcription factors, while the transcription factors of Th1 and Treg cells, galactin-9, filaggrin increased, which are indicative of enhanced immunomodulation (p < 0.05). Moreover, in rats with no AD induction, the same treatments significantly increased the relative abundance of phylum Bacteroidetes and the genus Bacteroides. Furthermore, bacterial taxa associated with butyrate production such as, Lachnospiraceae and Ruminococcaceae at family, and Roseburia at genus level were increased in the treated groups. These findings suggest that the dietary supplementation of β-1,3/1,6-glucan and/or L. plantarum LM1004 has a great potential for treatment of AD as well as obesity in humans through mechanisms that might involve modulation of host immune systems and gut microbiota.

• 한국미생물학회:학술대회논문집
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• 한국미생물학회 2008년도 International Meeting of the Microbiological Society of Korea
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• pp.62-64
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• 2008

A major hurdle to the development of RNA interference as therapy for HIV infection is the delivery of siRNA to T lymphocytes which are difficult cells to transfect even in vitro. We have employed a single chain antibody to the pan T cell surface antigen CD7 was conjugated to an oligo-9-arginine peptide (scFvCD7-9R) for T cell-specific siRNA delivery in NOD/SCIDIL2${\gamma}$-/- mice reconstituted with human peripheral blood lymphocytes (Hu-PBL). Using a novel delivery, we first show that scFvCD7-9R efficiently delivered CD4 siRNA into human T cells in vitro. In vivo administration to Hu-PBL mice resulted in reduced levels of surface CD4 expression on T cells. Mice infected with HIV-1 and treated on a weekly basis with scFvCD7-9R-siRNA complexes targeting a combination of viral genes and the host coreceptor molecule CCR5 successfully maintained CD4/CD3 T cell ratios up to 4 weeks after infection in contrast to control mice that displayed a marked reduction in CD4 T cell numbers. p24 antigen levels were undetectable in 3 of the 4 protected mice. scFvCD7-9R/antiviral siRNA treatment also helped maintain CD4 T cell numbers with reduced plasma viral loads in Hu-PBL mice reconstituted with PBMC from donors seropositive for HIV, indicating that this method can contain viral replication even in established HIV infections. Our results show that scFvCD7-9R could be further developed as a potential therapeutic for HIV-1 infection.

• Parasites, Hosts and Diseases
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• 제27권2호
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• pp.79-86
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• 1989

Naegleria fowleri로 면역시킨 마우스의 혈청이나 비장세포를 다른 마우스에 주입시켜 N. fowleri 감염에 대한 면역효과가 나타나는지 살펴보았다. 또 어미 마우스를 N. fowleri로 면역시 킨 다음 면역시키지 않은 어미에서 태어난 새끼 마우스에게 면역시킨 마우스의 모유를 먹게한 뒤 모유를 통한 면역 효과의 전달 여부를 관찰하였다. 면역시킨 마우스의 비장세포나 정상 마우스의 혈청을 다른 마우스에 주입시킨 경우 감염 후 사망률이 감소하였으나 혈중 IgG는 증가되지 않았다. 한편, 면역시킨 마우스의 혈청이나 정상 마우스의 비장세포를 준 경우 혈중 보G가 증가되고 감염 후 생존 기간은 연장되었으나 결국은 모든 마우스가 사망하였다. 즉 면역시킨 마우스 또는 정상 마우스의 혈청이나 비장세포를 다른 마우스에 주입시키면 사망률이 감소되거나 생존 기간이 연장됨을 알 수 있었다. 또 면역시킨 어미 마우스의 혈중, 모유 내, 또는 그 모유를 먹은 새끼 마우스의 혈 중에서, N. fowleri에 대한 IgG는 증가되었으나 IgA는 증가하지 않았으며 증가된 항체도 감염 후 의 사망률이나 생존 기간에는 큰 영향을 주지 않았다.

• Toxicological Research
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• 제28권3호
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• pp.159-164
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• 2012

Allergic skin inflammation such as atopic dermatitis (AD) is characterized by edema and infiltration with various inflammatory cells such as mast cells, basophils, eosinophils and T cells. Thymic stromal lymphopoietin (TSLP) is produced mainly by epidermal keratinocytes, as well as dermal fibroblasts and mast cells in the skin lesions of AD. Omega-3 polyunsaturated fatty acids in fish oil can reduce inflammation in allergic patients. Fermentation has a tremendous capacity to transform chemical structures. The antiinflammatory effects of fish oil have been described in many diseases, but the beneficial effects by which fermented olive flounder oil (FOF) modulates the allergic response is poorly understood. In this study, we produced FOF and tested its ability to suppress the various allergic inflammatory responses. The ability of FOF to modulate the immune system was investigated using a mouse model of AD. The FOF-treated group showed significantly decreased immunoglobulin E (IgE) and histamine in serum. Also, the increased TSLP expression was significantly inhibited in the FOF group; the FOF-treated group was not appreciably different from the hydrocort cream treatment group. In addition, FOF treatment resulted in a smaller spleen size with reduced the thickness and length compared to the induction group. Splenocytes from mice treated with FOF produced significantly less IFN-${\gamma}$, IL-4, T-box transcription factor (T-bet) and GATA binding protein 3 (GATA3) expression compared with the induction group. These results suggest that FOF may be effective in treating the allergic symptoms of AD. 5.