• 한국응용과학기술학회지
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• 제29권2호
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• pp.175-183
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• 2012

본 연구는 아토피 피부염을 갖는 질환동물에서 어성초를 비롯한 다양한 식물추출물을 이용하여 제조한 크림의 항아토피 피부염증에 대한 효능을 평가하였다. BALB/c 마우스 를 이용하여 아토피 피부염 유발 대조군 및 크림 처리군으로 완전 임의 배치하였다. 혈액 IgE와 히스타민 농도는 크림 처리군이 DNCB 유도 아토피 대조군에 비해서 유의하게 감소하였으며, 아토피 피부염이 심각한 상태의 마우스에서 정상적인 피부상태로 회복되었음을 관찰하였다. 본 결과는 아토피질환 모델 BALB/c 마우스에서 어성초 혼합 식물추출물의 투여가 혈액 IgE를 낮춤과 동시에 비만세포에서 생성되는 히스타민의 배출량을 억제함으로써 항아토피 효능을 갖는다는 점을 시사 해준다.

• Tuberculosis and Respiratory Diseases
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• 제46권2호
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• pp.229-240
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• 1999

연구배경: HSVtk/GCV를 이용한 유전자치료에서 면역반응은 1) adenovirus 혹은 retrovirus와 같이 벡타로 사용된 virus의 단백질, 2) 치료목적으로 이입된 HSVtk 유전자의 생성물, 3) 암세포에 대해서 일어날 수 있다. 그리고 이러한 면역반응은 cytokines의 생성 혹은 cytotoxic tumor-specific T-cell의 생성을 초래하여 bystander effect에 의한 살상효과를 증가시키거나, anti-tumor immunity를 유도하여 tumor vaccine의 효과를 나타낼 수 있다. 한편 이와는 대조적으로 면역반응용 HSVtk 유전자를 발현하는 세포들을 파괴하여 이입된 HSVtk 유전자의 발현기간을 제한함으로서 유전자치료의 효과를 감소시킬 수도 있다. 본 연구는 retrovirus 벡타로 이입한 HSVtk 유전자치료에서 면역체계가 bystander effect에 의한 살상효과에 미치는 영향을 규명하고 면역체계가 이입한 유전자의 발현에 미치는 영향을 조사하고자 하였다. 방 법: Immunocompetent mice인 Balb/c mouse와 immunodeficient mouse인 Balb/c-nude 및 SCID mouse에서 retrovirus 벡타를 사용하여 HSVtk 유전자를 이입하고 치료효과를 조사하였다. 그리고 Balb/c mouse에 면역억제제인 cyclosporin을 투여하여 면역억제제가 bystander effect 및 유전자치료 효과와 유전자의 발현기간에 미치는 영향을 조사하였다. 결 과: Balb/c mouse에 HSVtk 유전자를 이입하고 GCV를 투여한 군은 GCV를 투여하지 않은 대조군에 비해 종양의 성장이 유의하게 억제되었으나 Balb/c-nude mouse와 SCID mouse의 경우 GCV를 투여한 군과 대조군 사이에 유의한 차이가 없었다. 면역억제제인 cyclosporin을 투여한 군에서 유전자 치료 효과가 cyclosporin을 투여하지 않은 정상 mouse에 비해 치료효과가 유의하게 작았다. Cyclosporin 투여에 따른 유전자의 발현기간에는 유의한 차이가 없었다. 결 론: Retrovirus 벡타를 사용한 HSVtk 유전자치료에는 면역증강이 치료효과를 증가시킬 것으로 생각된다.

• 한방안이비인후피부과학회지
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• 제9권1호
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• pp.1-15
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• 1996

The purpose of this research was to investigate effect of water extract of DangKwi-Eum-Ja ka Sumsoo(DESE) on the cytotoxicity of human epidemloid cell, A431 cells. The effects of DESE on the proliferation of A431 cells, Balb/c 3T3 cells, mouse thymocytes and splenocnes were estimated by MTT colorimetric assay, and nitric oxide production from mouse peritoneal macrophage was estimated by Griess method. DESE inhibited the proliferation of A431 cells at $10{\mu}g/ml$, and did not affect the proliferation of Balb/c 3T3 cells. DESE decreased the cytotoxicity of mitomycin C or cisplatin on A431 cells, increased the cytotoxicity of mitomycin C or cisplatin on Balb/c 3T3 cells. DESE inhibited the proliferation of mouse thymocytes and splenocytes at $100{\mu}g/ml$. DESE did not affect the nitric oxide production from mouse peritoneal macrophage in vitro, but decreased the nitric oxide production from DESE-treated mouse peritoneal macrophage.

• Parasites, Hosts and Diseases
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• 제61권2호
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• pp.138-146
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• 2023

Toxoplasma gondii is an intracellular protozoan parasite which can infect most warm-blooded animals and humans. Among the different mouse models, C57BL/6 mice are more susceptible to T. gondii infection compared to BALB/c mice, and this increased susceptibility has been attributed to various factors, including T-cell responses. Dendritic cells (DCs) are the most prominent type of antigen-presenting cells and regulate the host immune response, including the response of T-cells. However, differences in the DC responses of these mouse strains to T. gondii infection have yet to be characterized. In this study, we cultured bone marrow-derived DCs (BMDCs) from BALB/c and C57BL/6 mice. These cells were infected with T. gondii. The activation of the BMDCs was assessed based on the expression of cell surface markers and cytokines. In the BMDCs of both mouse strains, we detected significant increases in the expression of cell surface T-cell co-stimulatory molecules (major histocompatibility complex (MHC) II, CD40, CD80, and CD86) and cytokines (tumor necrosis factor (TNF)-α, interferon (IFN)-γ, interleukin (IL)-12p40, IL-1β, and IL-10) from 3 h post-T. gondii infection. The expression of MHC II, CD40, CD80, CD86, IFN-γ, IL-12p40, and IL-1β was significantly higher in the T. gondii-infected BMDCs obtained from the C57BL/6 mice than in those from the BALB/c mice. These findings indicate that differences in the activation status of the BMDCs in the BALB/c and C57BL/6 mice may account for their differential susceptibility to T. gondii.

• Current Research on Agriculture and Life Sciences
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• 제4권
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• pp.114-118
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• 1986

본(本) 연구(硏究)는 mouse의 산자수(産仔數) 및 생시체중에 대한 유전자(遺傳子) 효과(效果)를 구명(究明)하기 위하여, BALB/c, CBA, C3H 및 C57BL의 4계통(系統)을 양면교잡(兩面交雜)시켜 생산(生産)된 후대(後代) 362마리를 대상으로 조사(調査) 분석(分析)한 것이다. 공시(供試)된 mouse는 1984년(年) 11월(月)에 경북대학교(慶北大學校) 농과대학(農科大學) 부속동물사육장(附屬動物飼育場)에서 생산(生産)되었으며, Griffing 방법(方法)에 의하여 일반결합능력(一般結合能力), 특수결합능력(特殊結合能力) 그리고 상반교잡(相反交雜) 효과(效果) 등(等)이 분석(分析)되었다. 일반결합능력(一般結合能力) 효과(效果)는 산자수(産仔數)에서 -0.4163~0.3337 그리고 생시체중(生時體重)에서 -0.0356~0.0894로 추정(推定)되었으나 유의차(有意差)는 인정되지 않았다. 특수결합능력(特殊結合能力) 효과(效果)는 산자수(産仔數)에서 -1.0388~1.7913 그리고 생시체중(生時體重)에서 -0.1144~0.1343으로 추정(推定)되었으나 유의차(有意差)는 인정되지 않았다. 상반교잡(相反交雜) 효과(效果) 추정치(推定値)는 유의성(有意性)이 인정되었는데 산자수(産仔數)의 경우 BALB/c${\times}$C3H에서 -2.36, CBA${\times}$C57BL에서 1.84, BALB/c${\times}$CBA에서 -1.50이었고, 생시체중(生時體重)의 경우 CBA${\times}$C57BL에서 -0.26 BALB/c${\times}$CBA에서 0.15 그리고 BALB/c${\times}$C57BL에서 -0.15이었다.

• 생약학회지
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• 제26권3호
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• pp.253-258
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• 1995

The purpose of this research was to investigate the effects of petroleum ether extract of Euonymus alatus (EAP) on the proliferation of human tumor cells. EAP inhibited the proliferation of HeLa, Hep G2, KHOS/NP and A431 cells. The cytotoxicity of doxorubicin on human tumor cells and Balb/c 3T3 cells were increased by the combination of EAP. EAP did not affect the proliferation of Balb/c 3T3 cells, mouse spleen cells and human lymphocytes. These results suggest that EAP has the cytotoxicity on human tumor cells without cytotoxicity on Balb/c 3T3 cells, mouse spleen cells and human lymphocytes, and increase the cytotoxicity of doxorubicin.

• IMMUNE NETWORK
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• 제23권2호
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• pp.15.1-15.17
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• 2023

Innate lymphoid cells (ILCs) are critical immune-response mediators. Although they largely reside in mucosal tissues, the kidney also bears substantial numbers. Nevertheless, kidney ILC biology is poorly understood. BALB/c and C57BL/6 mice are known to display type-2 and type-1 skewed immune responses, respectively, but it is unclear whether this extends to ILCs. We show here that indeed, BALB/c mice have higher total ILCs in the kidney than C57BL/6 mice. This difference was particularly pronounced for ILC2s. We then showed that three factors contributed to the higher ILC2s in the BALB/c kidney. First, BALB/c mice demonstrated higher numbers of ILC precursors in the bone marrow. Second, transcriptome analysis showed that compared to C57BL/6 kidneys, the BALB/c kidneys associated with significantly higher IL-2 responses. Quantitative RT-PCR also showed that compared to C57BL/6 kidneys, the BALB/c kidneys expressed higher levels of IL-2 and other cytokines known to promote ILC2 proliferation and/or survival (IL-7, IL-33, and thymic stromal lymphopoietin). Third, the BALB/c kidney ILC2s may be more sensitive to the environmental signals than C57BL/6 kidney ILC2s since they expressed their transcription factor GATA3 and the IL-2, IL-7, and IL-25 receptors at higher levels. Indeed, they also demonstrated greater responsiveness to IL-2 than C57BL/6 kidney ILC2s, as shown by their greater STAT5 phosphorylation levels after culture with IL-2. Thus, this study demonstrates previously unknown properties of kidney ILC2s. It also shows the impact of mouse strain background on ILC2 behavior, which should be considered when conducting research on immune diseases with experimental mouse models.

• Parasites, Hosts and Diseases
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• 제30권3호
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• pp.169-176
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• 1992

여섯 계통의 근교계 마우스떠에 상흡충의 기생기간과 경시적 산란력을 근거로 하여 숙주 기생충 관계의 계통별 차이를 구명하기 위해 마우스찰 20개의 간흡충 피낭유충을 경구적으로 감염시켰다. 감염 후 간흡충의 충란이 처음 검출될 때까지의 기간은 DDY 마우스에서 평균 21.2일로 가장 짧았고, GPC 21.48, BALB/c 및 DS 23.2 5, ICR 및 nude 23.4일의 순이 었다. 총산란기간 역시 DDY 마우스에서 164일로 가장 길었으며, GPC 132R, BALB/c 97일, nude 37일, DS 32일 및 ICR 28일의 순이었다. DDY 및 GPC 마우스에서는 간흡충의 산란수가 비교적 높고 안정적이었으나 나머지 4계통의 마우스에서는 관찰기간 동안 불규칙하였다. 이상의 성적으로 미루어 보아 마우스의 계통에 따라 간흡충의 숙주 기생충 관계의 차리를 확인하였고 DDY 마우스가 6계통중 가장 호적숙주임을 알았다.

• Toxicological Research
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• 제9권1호
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• pp.1-11
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• 1993

This study was carried out to investigate the immunopathological effects of 7, 12-Dimethylbenz[a]anthracene(DMBA) on mouse thymus. DMBA was administered subcutaneously to BALB/C mice by interscapular single injection of 50 or 100 ng/g of body weight. Each DMBA treatment group and additional corn oil control group of mice were studied on day 1, 3, 7, 14 and 21 following the injection of DMBA. DMBA treatment resulted in marked decreases in weights and cellularity of thymus. Thymus weights were decreased by 50.6 and 66.0% at 21 days, respectively, after treatment of 50ng/g and 100 ng/g DMBA.

• Journal of Korean Biological Nursing Science
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• 제3권1호
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• pp.53-61
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• 2001

Skin is constantly exposed to air, solar radiation, ozone and other air pollutants formulating free radicals. The reactive oxygen species(ROS), formed under these conditions, are associated with skin cancers, cutaneous photoaging, and cutaneous inflammatory disorders. In this study, we sought to establish an animal model for UVB-induced skin alteration using BALB/c mice. The level of UVB irradiation used in this model was within physiological dose. BALB/c mice were exposed to a single dose of UVB ($200mJ/cm^2$ and were sacrificed at 3, 6, 24, and 48 hours following the irradiation. The effect of a single exposure to UVB irradiation on skin catalase(CAT), superoxide dismutase(SOD), and glutathione peroxidase(GPx) activities were examined. Significant decrease in the activity of all enzymes were observed at 6 hours after irradiation(p<.05). The activity of CAT decreased more sharply than those of SOD and GPx, and then remained depressed until 48 hours after UVB irradiation, whereas the activity of GPx recovered to basal level at 48 h after UVB irradiation. Our results indicate that BALB/c mouse could be an adequate animal model of UVB irradiation experiment. These results will also provide fundamental knowledge for the effective nursing strategies in reducing UV-induced skin disorders.