• 제목, 요약, 키워드: nude mice

검색결과 245건 처리시간 0.033초

Hair Growth Promoting Effect of Radish Crude Saponin Extract on Athymic Nude Mice

  • Kim, Hyun-Kyoung
    • International journal of advanced smart convergence
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    • v.8 no.1
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    • pp.184-195
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    • 2019
  • This study investigates the hair restoration efficacy of selected radish saponin extracts on nude mice. Nude mice genetically predisposed to pattern balding were used in this study. Our study revealed the underlying mechanism of stimulating hair growth in athymic nude mice by repair the nu/nu follicular keratin differentiation defect. Thus, the topical application of radish saponin may represent a novel strategy for the management and therapy of certain forms of alopecia. The term of hair density of PEE treated nude mice were significantly increase as compared with of control nude mice. Histological observation of skin sample showed no hair follicle or only distorted hair follicles were observed in the control samples, in contrast, by the PEE treatment groups showed a fully formed and increased the number of hair follicles up to three times higher than that of control group in terms of the number of hair follicles in nude mouse skin.PEE treated mice the number of BrdU-labeled keratinocytes per anagen follicle increased significantly, especially in the follicular bulbs and outer root sheath compared with the control mice. Moreover, PEE-treated nude mice also exhibited a significant increase in the number of BrdU-labeled epidermal keratinocyte proliferation.

근교계 nude 및 DS 마우스 폐강삼출세포와 혈청의 간흡충 감염에 대한 면역이입의 시도 (Attempts to Transfer Immunity against Clonorchis in Nude and DS Mice)

  • 최동익;정동일;강덕희
    • The Korean Journal of Parasitology
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    • v.29 no.4
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    • pp.371-380
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    • 1991
  • 간흡충 피낭유충의 경구감염 또는 간흡충 성충의 대사산물의 피내주사로 감작한 근교계 nude 및 DS 마우스의 복강삼출세포와 혈청이 간흡충 감염에 대한 면역을 동승(syngeneic) 마우스에 이입하는지 여부를 구명하기 위해 대조군 마우스에서의 EpG, 부하충체수 및 모장당 plaque 형성세포수를 기준으로 감작군에서의 그 성적과 비교하였다. Challenge 감염후 EpG의 변동은 감작군과 비감작 대조군 마우스와 nude 및 DS 마우스와의 사이에 유의한 차를 인정할 수 없었다. 간흡충 성충의 회수률에서는 감작군과 비감작 대조군 사이에 유의적 차를 인정할 수 없었으나 nude 마우스는 DS 마우스에 비하여 다소 높은 회수률을 나타내었다. 비장에서 plaque 형성세포는 복강 삼출세포 $5{\times}10^5$와 Group II DS 마우스의 혈청 0.1 ml를 복강에 감작한 제4군에서만 소수 검출할 수 있었다. 이상의 성적으로 미루어 보아 세포성 면역계에 결손이 있다고 알려진 근교계 nude 및 DS의 복강삼출세포와 혈청에 의해서는 간흡충에 대한 면역이 이전되지 않음을 확인하였다.

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구강암 연구를 위한 동물실험모델의 개발(I) (MAKING IN VIVO MODEL TO STUDY ABOUT HUMAN ORAL CANCER (I))

  • 박형국;김용각
    • Maxillofacial Plastic and Reconstructive Surgery
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    • v.19 no.3
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    • pp.300-310
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    • 1997
  • 편평상피세포암종은 악성종양 중 가장 중요한 비중을 차지하고 있는 암종이다. 하지만 편평상피세포암종의 세포주는 다른 악성종양에 비하여 아직까지 많이 개발되어지지 않았다. 또한 동물실험모델을 만들기 위한 이종이식에 있어서 편평상피세포암종은 매우 낮은 생착율을 보이고 있다. 구강암 중에서도 편평상피세포암종은 가장 많은 부분을 차지하나, 개발된 세포주는 그리 많지 않으며, 더 더욱이 동물실험 모델의 제작은 쉽지 않아, 새로운 치료 약제의 개발이나 치료 방법 개발 등에 많은 제약이 있어왔다. 본 실험에서는 수종의 구강 편평상피세포암종의 세포주를 배양하였고, 특별히 고안된 사육시설을 이용하여 BALB/C nude mice를 사육하였다. 여러 농도의 구강암 세포주를 nude mice의 등에 피하로 이식하였다. 어떤 세포주는 계속적인 성장을 보였으나 어떤 세포주는 완전히 흡수되기도 하였다. 5주 이상을 관찰하였으며, 이식된 종양의 크기를 측정하고, 부피를 계산하였다. 또한 또 다른 동물모델의 제작 방법으로서 특별히 고안된 cap을 nude mice의 등에 이식하고, 그 안에 구강암 세포주를 배지와 함께 이식하였으며, 1주 후에 cap을 제거하였고, 4주 이상을 관찰하였으며, 성장하는 종양의 모습과 크기를 관찰하였다. 본 연구는 구강암 연구에 적절한 동물실험모델을 개발하여 다른 악성종양에 비해 동물실험적으로 연구할 기회가 적었던 구강암 영역의 연구를 활발히 하며, 향후 한국인의 구강암연구에 가장 적절한 동물실험모델을 개발하여, 보다 진보된 구강암 치료방법의 개발 및 신약 등의 개발에 이용하기 위함이다.

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Evaluation of the Potential Risk of Porcine Endogenous Retrovirus (PERV) Infection in Nude Mice

  • Bae, Eun-Hye;Jung, Yong-Tae
    • Journal of Microbiology and Biotechnology
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    • v.21 no.4
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    • pp.387-390
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    • 2011
  • Nude mice (BALB/c) were grafted with human 293 cells and PERV (porcine endogenous retrovirus)-IRES-EGFP (a packageable retroviral vector plasmid containing an internal ribosome entry site-enhanced green fluorescent protein)-producing pig PK15 cells in order to determine whether the pig cells could transmit PERV-IRES-EGFP to mice and human 293 cells in vivo. None of the transplanted human 293 cell lines were infected by PERV, but PCR analysis identified PERV-B provirus integration into both the heart and salivary gland of the inoculated nude mice. Our data indicate that hearts and salivary glands can be used to identify PERV-B receptors.

Histologic study of bone-forming capacity on polydeoxyribonucleotide combined with demineralized dentin matrix

  • Kim, Seok-Kon;Huh, Chang-Kyu;Lee, Jae-Hoon;Kim, Kyung-Wook;Kim, Moon-Young
    • Maxillofacial Plastic and Reconstructive Surgery
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    • v.38
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    • pp.7.1-7.5
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    • 2016
  • Background: This study examined the osteoinductive activity of demineralized dentin matrix (DDM) from human and polydeoxyribonucleotide (PDRN) for nude mice. Methods: Twenty healthy nude mice, weighing about 15~20 g, were used for the study. DDM from human and PDRN were prepared and implanted subcutaneously into the dorsal portion of the nude mice. The nude mice were sacrificed at 1, 2, and 4 weeks after grafting and evaluated histologically by hematoxylin-eosin and Masson's trichrome staining. The specimens were also evaluated via a histomorphometric study. Results: The DDM and PDRN induced new bone, osteoblasts, and fibroblasts in soft tissues. The histological findings showed bone-forming cells like osteoblasts and fibroblasts at 1, 2, and 4 weeks. New bone formation was observed in the histomorphometric study. In particular, the ratio of new bone formation was the highest at 2 weeks compared with the first week and fourth week. Conclusions: In this study, we showed that the PDRN used in this experimental model was able to induce bone regeneration when combined to the DDM.

HepG2 세포주를 이식한 BALB/c Nude Mice에서 흑삼의 고형암 개선효과 (Ameliorate Effect of Black Ginseng on HepG2 Cell transplanted in BALB/c Nude Mice)

  • 강신정;한정순;김애정
    • 한국식품영양학회지
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    • v.28 no.2
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    • pp.241-246
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    • 2015
  • The aim of this study was to examine the ameliorating effect of black ginseng on the growth of the HepG2 cell transplanted tumor in BALB/c nude mice. 27 male BALB/c nude mice (all six weeks old) were randomly divided into three groups: the control group, the first treatment group (HepG2300RG, using 300 mg/kg red ginseng), and the second treatment group (HepG2300BG, using 300 mg/kg black ginseng). The HepG2300BG in the HePG2 cells showed increased mean survival time than that of red ginseng group. The size and volume of the tumor in the 300BG group showed significant reduction compared to those of the HepG2300RG group (p<0.05). The body weight and liver weight of the HepG2300RG group was not significantly different with control and HepG2300BG group. The serum levels of ALT and AST in the HepG2300RG and HepG2300BG group were significantly lower than those of the control group. In conclusion, these results suggest that the black ginseng may have possible anti-tumor activities.

Saponin-SOD가 SNUC-4 Cell에 의해 유발편 대장암 Nude Mice의 암 성장 억제 효과 (Tumor-Suppressing Effects of Saponin-SOD in Nude Mice)

  • 박수진;강명화
    • 동아시아식생활학회지
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    • v.14 no.4
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    • pp.338-342
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    • 2004
  • This study was performed to measure the antioxidant effects of red ginseng extracts which antioxidation had been promoted through enzyme hydrolysis. In order to observe their tumor-suppressing effects, an anti-cancer medicine and Saponin-SOD, which was a highly antioxidant beverage made from red ginseng saponin adding SOD-like rice (with embryo buds) extracts, were administered to nude mice with large intestine cancer induced. There was a significant increase in the content of phenolic compounds as the enzyme was added. The red ginseng extracts showed a high electron-donating ability with the passage of time. The electron-donating ability was particularly high in the enzyme-treated red ginseng extract, and also observed as high in Saponin-SOD. The lipid-peroxide generation was inhibited depending on the concentration of Saponin-SOD added; the addition of 0.625% Saponin-SOD served to decrease the inhibition level up to 65% compared with the case of no addition (100%). As a result, it could be assumed that Saponin-SOD would strongly inhibit the oxidation of ghost membrane. After the cancer was induced in nude mice through the injection of SNUC-4 cell, there was a significant inhibition in the growth of tumors in nude mice into which Saponin-SOD were injected; the growth of tumors was gradually decreasing with the passage of time after the cancer induction. In particular, when Saponin-SOD was administered together with an anti-cancer medicine, the synergic effect was observed. In conclusion, Saponin-SOD, when used with an anti-cancer medicine, is expected to reduce the amount of free radical and lipid peroxide, which are known to cause harmful effects occurring from the internal application of medicine.

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Establishment of a Pancreatic Cancer Stem Cell Model Using the SW1990 Human Pancreatic Cancer Cell Line in Nude Mice

  • Pan, Yan;Gao, Song;Hua, Yong-Qiang;Liu, Lu-Ming
    • Asian Pacific Journal of Cancer Prevention
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    • v.16 no.2
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    • pp.437-442
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    • 2015
  • Aim: To establish a pancreatic cancer stem cell model using human pancreatic cancer cells in nude mice to provide a platform for pancreatic cancer stem cell research. Materials and Methods: To establish pancreatic cancer xenografts using human pancreatic cancer cell line SW1990, nude mice were randomly divided into control and gemcitabine groups. When the tumor grew to a volume of $125mm^3$, they treated with gemcitabine at a dose of 50mg/kg by intraperitoneal injection of 0.2ml in the gemcitabine group, while the mice in control group were treated with the same volume of normal saline. Gemcitabine was given 2 times a week for 3 times. When the model was established, the proliferation of pancreatic cancer stem cells was observed by clone formation assay, and the protein and/or mRNA expression of pancreatic stem cell surface markers including CD24, CD44, CD133, ALDH, transcription factors containing Oct-4, Sox-2, Nanog and Gli, the key nuclear transcription factor in Sonic Hedgehog signaling pathway was detected by Western blot and/or RT-PCR to verify the reliability of this model. Results: This model is feasible and safe. During the establishment, no mice died and the weight of nude mice maintained above 16.5g. The clone forming ability in gemcitabine group was stronger than that of the control group (p<0.01). In gemcitabine group, the protein expression of pancreatic cancer stem cell surface markers including CD44, and ALDH was up-regulated, the protein and mRNA expression of nuclear transcription factor including Oct-4, Sox-2 and Nanog was also significantly increased (P<0.01). In addition, the protein expression of key nuclear transcription factor in Sonic Hedgehog signaling pathway, Gli-1, was significantly enhanced (p<0.01). Conclusions: The pancreatic cancer stem cell model was successfully established using human pancreatic cancer cell line SW1990 in nude mice. Gemcitabine could enrich pancreatic cancer stem cells, simultaneously accompanied by the activation of Sonic Hedgehog signaling pathway.

마우스에 있어서의 Tyzzer병(病) 감염방어기구(感染防禦機構) (Protection Mechanism of Infection Against Tyzzer's Disease)

  • 이영순;이장락
    • 대한수의학회지
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    • v.20 no.1
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    • pp.33-38
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    • 1980
  • 1. In adult ICR-SLC mice, significant increase in the occurrence of the Tyzzer's disease was noted when the reticuloendothelial system was blockaded with the carbon particles. The most suitable bloakading time was 2 hours before inoculating Tyzzer's organisms, the route was intraperitoneal and the dose was 3mg/body. 2. Survival rate of the experimental group ICR-SLC suckling mice receiving BCG ($3{\times}10^8$) 6 days prior to intraperitoneal inoculation of Tyzzer's organisms was 80 percent, but the control group was 17%. 3. In comparing the survival rate of the nude/nude mice with the nude/+ mice, the former congenitally thymus deficient mice are 11 percent, but the latter are 67 percent.

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Bone Induction by Demineralized Dentin Matrix in Nude Mouse Muscles

  • Kim, Kyung-Wook
    • Maxillofacial Plastic and Reconstructive Surgery
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    • v.36 no.2
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    • pp.50-56
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    • 2014
  • Purpose: This study examined the osteoinductive activity of demineralized human dentin matrix for nude mice. Methods: Twenty healthy nude mice weighing about 15 to 20 g were used for study. Demineralized human dentin matrix was prepared and implanted into the dorsal portion of nude mice (subcutaneous), which were sacrificed at two, four, and eight weeks after demineralized dentin matrix grafting and evaluated histologically by H&E and Masson trichrome staining. The specimens were also evaluated histomorphometrically. Results: The demineralized dentin matrix induced bone and cartilage formation independently in soft tissues. Histological examination showed bone-forming cells such as osteoblasts and fibroblasts at two, four, and eight weeks. Conclusion: These results suggest that demineralized human dentin matrix has osteoinductive ability, and is a good alternative to autogenous bone graft materials.