• Title/Summary/Keyword: Mouse Size

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Combination Culture of Rotifer Brachionus rotundiformis and Copepod Apocylops sp. (로티퍼 Brachionus rotundiformis와 코페포다 Apocyclops sp.의 혼합 배양)

  • Jung, Min-Min;Rho, Sum
    • Journal of Aquaculture
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    • v.11 no.4
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    • pp.449-455
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    • 1998
  • The small size food organism(under the size 150${\mu}m$) is needed as food for early stage of marine fish larvae of small mouse (e.g the group of grouper). This study was investigated to develop a method for copepod Apocyclops sp. culture in combination with the rotifer B. rachionus for stable culture of copepod species and harvest of various size food organisms. The culture conditions as temperature, salinity, culture volume, photo period, culture preiod and observation interval were 25${\circ}C$, 22ppt, 40ml, all dark except to observation time, 16 days and every two day during the experimental period, respectively. The Tetraselmis suecica was used as the food for the two testing orgtanisms. After every two day counting, theses two organisms were transferred to fresh culture tanks with Tetraselmis suecica of $7{\times}10^5$cells/ml. In the mixed culture of B. rotundiformis and A. sp., growth of rotifer was suppressed by mixed culture with A. sp. whereas the growth of copepod Apocyclops was promoted in the mixed culture with rotifer B. rotundiformis (the maximum density was 22 individuals/ml through the 16 culture days). Moreover, the number of copepod nauplius were promoted about 2 times in the mixed culture compared to the numbers in single species culture. With this combination culture, the havested two food organisms of variable sizes. This size variation of food organisms was useful tools for larval rearing of small mouse marine fish larvae and next step food organism size of post hatched larvae.

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A Study on the Structural Relationship between Benefit, Consumer-Brand Relationship and Brand Attachment (제품 편익과 소비자-브랜드 관계 및 브랜드 애착, 구전 간의 구조적 관계에 관한 연구)

  • Lim, Jae-Moon
    • Management & Information Systems Review
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    • v.29 no.1
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    • pp.117-144
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    • 2010
  • This paper planned to review positively the influence of leading variables - Functional benefits, Emotional benefits, Self-expressive benefits over Consumer-brand relationship, and the structural relationship between Consumer-brand relationship and Brand attachment, Word-of-mouse. For it, we verified our hypothesis utilizing Hierarchial chi-square analysis that was available to statistically verify the size between 2 paths out of Structural models As the result of research, Emotional benefits was more influential than Functional benefits in the formation of Consumer-brand relationship. Additionally, the influential difference between Emotional benefits and Self-expressive benefits was not found in the formation of Consumer-brand relationship. In other words, both Emotional benefits and Functional benefits were proved to have a positive influence on forming Consumer-brand relationship. On the other hand, Self expressive benefits played a more influential role than Functional benefit in the formation of Consumer-brand relationship. The fact was also proved that the higher the formation level of Consumer -brand relationship was, the greater positive influence over Brand attachment and Word-of-mouse Through the above results, it is more desirable to establish brand strategy for forming Consumer-brand relationship through Emotional benefits and Self expressive benefits rather than Functional benefits. Additionally, the Consumer-brand relationship formed by Value benefit is expected not only to get the level of attachment, showing like love, toward the brand deeper, but also to achieve the effect of positive, long term communication through voluntary Word-of-mouse.

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The Anticancer Effects and Drug Metabolic Enzyme Change by Intraperitoneal Injection of Agrimonia Pilosa Ledeb (선학초 (짚신나물) 복강주사의 항암효과 탐색 및 약물 대사효소의 변화)

  • Choi, Jung-Won;Jang, Bo-Hyung;Lee, Ju-Ah;Ko, Ho-Yeon;Jung, Hee;Jun, Chan-Yong;Park, Jong-Hyung;Kim, Ji-Hye;Ko, Seong-Gyu;Choi, You-Kyung
    • The Journal of Korean Medicine
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    • v.30 no.4
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    • pp.129-141
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    • 2009
  • Objective: This study was to investigate the anti-tumor effect, safety, safety, mechanism and metabolizing enzyme of Agrimonia pilosa LEDEB (APL) in female C57B/L mouse tumor (in vivo). Method: First, to evaluate the antitumor activity of APL, we divided the mice into four groups: normal, control, APL50 (50mg/kg), and APL100 (100mg/kg). LLC-obtained American Type Culture Collection was used. LLC had been inoculated to induce tumors. To measure the anti-tumor effect of APL, we calibrated tumor size and weight. To analyze the mechanism of anti-tumor in APL, we used western blotting and to observe metabolizing enzyme in APL we used to real-time PCR. Result: APL50 and APL100 significantly inhibited tumor growth from 12 days after medicine injected. APL did not induce caspase-dependent apoptosis in LLC-bearing mouse tumor. In APL100, it decreased 41% and 71% in CYP2D22 and CYP3A11, respectively. Conclusion: These results suggest that APL has some anti-tumor effects in female C57B/L mouse tumor. APL should be used carefully with other drugs related with CYP2D22 and CYP3A11.

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The Anticancer Effects and Drug Metabolic Enzyme Change by Oral Intake of Agrimonia Pilosa Ledeb (선학초(짚신나물) 경구투여시 항암효과 탐색 및 약물 대사효소의 변화)

  • Rhee, Si-Hyung;Jung, Hee;Lee, Ju-Ah;Go, Ho-Yeon;Choi, Yu-Kyung;Park, Jong-Hyung;Kim, Ji-Hye;Ko, Seong-Kyu;Jun, Chan-Yong
    • Journal of Society of Preventive Korean Medicine
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    • v.13 no.2
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    • pp.51-64
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    • 2009
  • Objective : This research was aimed to investigate the anti-tumor effect, safety, mechanism and metabolizing enzyme of Agrimonia pilosa LEDEB(APL) in female C57B/L mouse. Methods : At first, to evaluate the anti-tumor activity of APL, we divided into four groups, normal, control, APL100(100mg/kg), APL150(150mg/kg). LLC obtained American Type Culture Collection was used. LLC had been inoculated to induce tumor. To measure the anti-tumor effect of APL, we calibrate tumor size and weight. To study for mechanism of anti-tumor in APL, we used western blotting and to know metabolizing enzyme in APL we used to real-time PCR. Results : APL100, APL150 inhibited tumor growth after medicine injected. APL did not only induced caspase-dependent apoptosis in LLC-bearing mouse tumor. In APL100, it were decreased 72% in CYP3A11. In APL150, it were decreased 62%, 75% in CYP3A11 and MRP1a respectively. Conclusion : These results suggests that APL has some anti-tumor effects in female C57B/L mouse tumor. APL should be careful use with other drugs related with CYP3A11 or MRP1a.

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The Efficacy of β-cyclodextrin/polyethyleneimine/silk Fibroin Hydrogel in Healing Burnt Wound (사이클로덱스트린/폴리에틸렌이민/실크 피브로인 수화겔의 화상치유효능)

  • Seo, Seung Ree;Lee, Mi Sun;Kim, Jin-Chul
    • Applied Chemistry for Engineering
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    • v.22 no.6
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    • pp.599-604
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    • 2011
  • In this study, we investigated the efficacy of ${\beta}$-cyclodextrin (${\beta}CD$) hydrorogel containing silk fibroin (SF) on healing burnt wound. Tosyl ${\beta}CD$ was conjugated to polyethyleneimine (PEI) using epichlorohydrin (EPI) as a cross-linker. The ${\beta}CD/PEI/SF$ hydrogel was applied on the back of mouse and then the efficacy of hydrogel was compared with both positive control group and negative control group. There was no wound healing efficacy showed neither in the drug loaded ${\beta}CD/PEI/SF$ hydrogel group nor in the drug unloaded ${\beta}CD/PEI/SF$ hydrogel group. On the other hand, in the positive control group, a significant reduction of the wound size after the usage of OTC hydrorogel was obtained. The burn-healing histological result showed a similar phenomenon. After hematoxylin-eosin staining the skin induced by burning, and the epithelial growth observed in the dermis, the efficacy of ${\beta}CD/PEI/SF$ hydrogel in healing burnt wound could not be clearly identified.

Comparative Efficacy for Dressing Methods of Iodine on Infected Full Thickness Skin Wound in the Mouse (흰 쥐의 감염된 전층피부 결손에서 Iodine의 드레싱 방법에 따른 창상치유 효과의 비교)

  • Lee, Jong-Hoon;Kim, Yo-Han;Min, Kyung-Hee;Hong, Sung-Hee;Lee, Won-Mi;Chae, Jeong-Don;Jun, Jin-Hyun
    • Archives of Plastic Surgery
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    • v.37 no.3
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    • pp.213-219
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    • 2010
  • Purpose: Iodine has been used for the prevention or management of wound infection as a topical agent. Although iodine was widely used mainly by Betadine$^{(R)}$ and cadexomer iodine, there was no comparative study on the efficacies of dressing methods of iodine. And also it's wound healing effect was not yet clear. The purpose of this study is to compare antibacterial effects and wound healing effects associated with various dressing methods of iodine on infected full thickness skin defect in the mouse. Methods: One full thickness skin defects in the mice (n=60) were developed on the back and left open for twenty-four hours. Sixty mice were divided into four groups : group S (dressing with Betadine$^{(R)}$ soaking, n=15), group T (dressing with Betadine$^{(R)}$ topping, n=15), group I (dressing with Iodosorb$^{(R)}$, n=15), group G (control group, dressing with dry gauze, n=15). The size of the wound defects and the grades of wound healing were evaluated in 4, 7, 10 days, and antibacterial effect was evaluated with restricted zone in Mueller Hinton agar by disk diffusion method. Results: After the wound was left open for twenty-four hours, many Staphylococcus aureus were cultured. The wound defect size was decreased in order of Betadine$^{(R)}$ soaking, Iodosorb$^{(R)}$, Betadine$^{(R)}$ topping and gauze dressing group in all days, but difference among experimental groups was not statistically significant. The grade score of wound healing was increased in order of Betadine$^{(R)}$ soaking, Iodosorb$^{(R)}$, Betadine$^{(R)}$ topping and gauze dressing group, and the difference was statistically significant. Antibacterial effect for S. aureus was increased in order of Iodosorb$^{(R)}$, Betadine$^{(R)}$ soaking, Betadine$^{(R)}$ topping and gauze dressing group, and the difference was statistically significant. Conclusion: Selection of the effective dressing method of iodine for infected wounds remains a controversial decision. According to this study, Iodosorb$^{(R)}$ may be most effective method for antibacterial effect and Betadine$^{(R)}$ soaking may be most effective method for infected wound healing. However, further study is necessary to evaluate the clinical efficacy of dressing methods of iodine and to search for the mechanisms that explain their effects.

Comparison of Antibacterial Ointments for Antibacterial and Wound Healing Effect on Infected Full Thickness Skin Defect in the Mouse (흰 쥐의 감염된 전층피부결손에 대한 항균연고들의 항균효과 및 창상치유 효과의 비교)

  • Jeon, So-Yeon;Lee, Jong-Hoon;Min, Kyung-Hee;Hong, Sung-Hee;Lee, Won-Mi;Chae, Jeong-Don;Jun, Jin-Hyun
    • Archives of Plastic Surgery
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    • v.37 no.2
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    • pp.115-121
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    • 2010
  • Purpose: Many topical agents had been used for contaminated wound treatment. Although antimicrobial ointments were widely used as topical agents, their comparative antibacterial and wound healing effects were largely unreported. The purpose of this study was to compare antibacterial effects and wound healing effects of common topical ointments on infected full thickness skin defect in the mouse. Methods: One full thickness skin defects in the mice (n=60) were developed on the back and left open for twenty-four hours. Sixty mice were divided into four groups: group B (dressing with Bactroban$^{(R)}$, n=15), group I (dressing with Iodosorb$^{(R)}$, n=15), group T (dressing with Terramycin$^{(R)}$, n=15), group G (control group, dressing with dry gauze, n=15). The size of wound defects and the grades of wound healing were evaluated at 4, 7, 10 days, and antibacterial effect was evaluated with restricted zone in Mueller Hinton agar by disk diffusion method. After the wound was left open for twenty-four hours, many Staphylococcus aureus was cultured. The wound defect size was decreased in order of Bactroban$^{(R)}$ (B), Iodosorb$^{(R)}$ (I), Terramycin$^{(R)}$ and gauze dressing group in all days, but difference among experimental groups was not statistically significant. The grade score of wound healing was increased in order of Bactroban$^{(R)}$, Iodosorb$^{(R)}$, Terramycin$^{(R)}$ and gauze dressing group, and the difference was statistically significant. Antibacterial effect for was increased in order of Bactroban$^{(R)}$, Iodosorb$^{(R)}$, Terramycin$^{(R)}$ and gauze dressing group, and the difference was statistically significant. Conclusion: Topical antimicrobial ointments application was effective against wound infections by S. aureus. Bactroban$^{(R)}$ may be an optimal topical treatment for infected wounds according to this study. However, further study is necessary to evaluate the clinical efficacy of antimicrobial ointments and to search for the mechanisms that explain their effects.

Growth and development of Gymnophalloides seoi in immunocompetent and immunosuppressed C3H/HeN mice

  • Chai, Jong-Yil;Chung, Won-Jae;Kook, Jina;Seo, Min;Park, Yun-Kyu;Guk, Sang-Mee;Choi, Min-Ho;Lee, Soon-Hyung
    • Parasites, Hosts and Diseases
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    • v.37 no.1
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    • pp.21-26
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    • 1999
  • The growth and development of Gymnophalloides seoi were studied in C3H/HeN mice and effects of immunosuppression of the host on the worm development were observed. Two hundred metacercariae of G. seoi were orally administered to each mouse, and worms were recovered on days 1, 3, 5, 7, 14 and 21 post-infection (PI). The worm recovery rate was significantly higher in immunosuppressed (ImSP) mice than in immunocompetent (ImCT) mice except on days 1 and 3 PI. The worms attained sexual maturity by day 3 PI with eggs in the uterus, and worm dimensions and the number of uterine eggs continuously increased until day 14 PI in ImSP mice. Worms recovered from ImSP mice were significantly larger in size than those from ImCT mice on days 1 and 3 PI, and the number of uterine eggs was significantly larger in ImSP mice on days 5 and 7 PI. Genital organs such as the ovary, testes, and vitellaria, that were already developed in the metacercarial stage. grew a little in size until day 14 PI. The results show that the C3H/HeN mouse is, though not excellent, a suitable laboratory host for G. seoi.

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Potentiating Dietary Green Tea Extracts Anti-Tumor Activity of Cisplatin in BALB/c Mice Bearing CT26 Colon Carcinoma (대장암(CT 26) 생쥐에서 녹차추출물 음용에 의한 시스플라틴 항암작용 증강효과)

  • Lee, Byoung-Rai;Park, Pyoung-Sim
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.41 no.8
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    • pp.1100-1105
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    • 2012
  • Green tea intake is known to have preventive effects against cancer. In this study, we evaluated the tumor suppressive effects of dietary green tea extracts (GTE) as a modulator on cisplatin in an established colon cancer mouse model. The cisplatin-induced cytotoxicity was determined with cell viability of the mouse colon cancer cell line (CT26) in vitro. The influence of GTE on the anti-tumor activity of cisplatin was evaluated by measuring tumor size with digital calipers in mice bearing CT26 colon carcinomas. The CT26 cell viability decreased to 93% at a $20{\mu}g/mL$ concentration of cisplatin. However, cell viability decreased to 15% with a combination of $20{\mu}g/mL$ cisplatin and GTE ($75{\mu}g/mL$). There were no apparent changes in cisplatin-induced cytotoxicity with GTE and epigallocathechin gallate (EGCG) treatments. Tumor size decreased in dietary GTE combining intra-peritoneal cisplatin-injected tumors bearing mice compared with cisplatin or GTE alone administered to tumor-bearing mice. These experiments showed that dietary GTE has a potentiating effect on the cisplatin anti-tumor activity of an established mice colon cancer model. Therefore, the GTE may be a candidate for modulators in anticancer treatments with cisplatin.

Preferences and animal welfare of mice for type of bedding material (마우스 사육에 있어서 깔짚의 종류에 따른 물리적.화학적 성상의 변화에 관한 연구)

  • Lim Jun-Sung;Shin Dong-Seok;Cho Jin-Youn;Kim Hyun-Seok;Kim Min-Su;Im Hyun;Ahn Jae-Bum;Song Ji-Yae;Kim Hyeon-Cheol;Jung Ki-Soo;Lee Mi-Sook;Park Young-Jae;Shin Myung-Kyun
    • Korean Journal of Veterinary Service
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    • v.29 no.1
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    • pp.71-77
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    • 2006
  • The type of bedding material has been reported affect the environment and animal well-being. Therefore, it has an impact on the health. So, bedding material is the most Important factor in mouse environments. If it is not properly treated, experimental results are unreliable. In this study, various types of bedding material were evaluated in terms of physical characteristics and preference. It was found that bedding material consisting of large fibrous particles and wide inter-particular gap were preferred. The characteristics of bedding material were further investigated by scanning the size and shape of particles. The results show that physical characteristics such as shape, ammonia absorption, particle size effect on experimental data.