• Title/Summary/Keyword: Ki

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Significance of Ki67 and p27 Reactivities in Various Thyroid Disorders (갑상선 결절의 Ki67과 p27 발현도에 대한 분석)

  • Park Cheong-Soo;Chung Woung-Youn;Chang Hang-Seok;Lee Mi-Kyung
    • Korean Journal of Head & Neck Oncology
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    • v.15 no.1
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    • pp.3-8
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    • 1999
  • Objective: The expression of Ki67, a proliferation marker, and p27, a cyclin dependent kinases(CDKs) inhibitor, has been studied in various human neoplasms. This study was carried out to determine whether these markers are useful in distinguishing benign from malignant lesions of the thyroid or predicting biologic behavior of malignant lesions. Material and Methods: Using immunohistochemical techniques with monoclonal antibodies to Ki67 and p27, we analyzed the expression of Ki67 and p27 in various thyroid disorders(25 follicular adenomas, 47 follicular carcinomas, 16 papillary carcinomas, 20 adenomatous goiters and 40 normal thyroid tissues). The labeling indices(LIs) were determined by counting cells expressing these markers in 1000 cells per immunostained slide. Results: Neoplastic thyroid diseases showed higher expression of Ki67 and lower expression of p27 than non-neoplastic diseases(p<0.05). The expression of p27 was significantly different between follicular adenomas($LI=55.4{\pm}5.7$) and follicular carcinomas($LI=23.2{\pm}10.2$). There was, however, no significant correlation between the degree of Ki67 and p27labeling indices and types of carcinoma or clinical aggressiveness of diseases. Conclusion: The degree of Ki67 and p27 expression was useful in distinguishing between benign from malignant thyroid lesions, particulary between follicular adenoma and follicular carcinoma, but was not directly proportional to the tumor aggressiveness.

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Ultrathin Titania Coating for High-temperature Stable $SiO_2$/Pt Nanocatalysts

  • Reddy, A. Satyanarayana;Kim, S.;Jeong, H.Y.;Jin, S.;Qadir, K.;Jung, K.;Jung, C.H.;Yun, J.Y.;Cheon, J.Y.;Joo, S.H.;Terasaki, O.;Park, Jeong-Young
    • Proceedings of the Korean Vacuum Society Conference
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    • 2011.08a
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    • pp.217-217
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    • 2011
  • Recently, demand for thermally stable metal nanoparticles suitable for chemical reactions at high temperatures has increased to the point to require a solution to nanoparticle coalescence. Thermal stability of metal nanoparticles can be achieved by adopting core-shell models and encapsulating supported metal nanoparticles with mesoporous oxides [1,2]. However, to understand the role of metal-support interactions on catalytic activity and for surface analysis of complex structures, we developed a novel catalyst design by coating an ultra-thin layer of titania on Pt supported silica ($SiO_2/Pt@TiO_2$). This structure provides higher metal dispersion (~52% Pt/silica), high thermal stability (~600$^{\circ}C$) and maximization of the interaction between Pt and titania. The high thermal stability of $SiO_2/Pt@TiO_2$ enabled the investigation of CO oxidation studies at high temperatures, including ignition behavior, which is otherwise not possible on bare Pt nanoparticles due to sintering [3]. It was found that this hybrid catalyst exhibited a lower activation energy for CO oxidation because of the metal-support interaction. The concept of an ultra-thin active metal oxide coating on supported nanoparticles opens-up new avenues for synthesis of various hybrid nanocatalysts with combinations of different metals and oxides to investigate important model reactions at high-temperatures and in industrial reactions.

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The study on the interrelationship of fixing the Ki-Gu(氣口) pulse and the Yin-Yeong(人迎) pulse in front of Kwan(關) the distance of 1 Pun(分) and the development of the Kwan-Pulse(關脈) (기구인영맥(氣口人迎脈)의 '관전일분처(關前一分處)' 비정(比定)과 관맥(關脈) 형성과정(形成過程)의 상관성(相關性)에 관한 연구(硏究))

  • Kim, Jeong-Giu
    • The Journal of the Society of Korean Medicine Diagnostics
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    • v.13 no.2
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    • pp.14-23
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    • 2009
  • In the Ki-Gu(氣口) pulse and the Yin-Yeong(人迎) pulse are the arterial pulsation position of the Lung Channel of Hand-Taeuem(手太陰) and the Stomach Channel of Foot-Yangmyeong(足陽明). At the pulses we can examine the circulation of Ki-Hyeol(氣血), the balance of Uem-Yang(陰陽), the deficiency and excess of the diseases, whether the disease is in Uem-Channel(陰經) or Yang-Channel (陽經), whether the disease is internel injury or externel injury. In the Ki-Gu(氣口) pulse and the Yin-Yeong(人迎) pulse are in front of the Right-Kwan(右關) and the Left-Kwan(左關) the distance of 1 Pun(分) because of completion of the Chon-Ku-Pulse-Taking(寸口脈診). The purpose of examnation is same to . In the Kwan-Pulse(關脈) doesn't have the position. It has only the role of a gateway of the circulation of Ki-Hyeol(氣血), the balance of Uem-Yang(陰陽). And it is same to role of the Ki-Gu(氣口) pulse and the Yin-Yeong(人迎) pulse in . So we can think that the Kwan-Pulse(關脈) in and the Ki-Gu(氣口) pulse and the Yin-Yeong(人迎) pulse in are the same thing. And we must have the different standard when examine the condition of Sam-Cho(三焦) and the circulation of Ki-Hyeol(氣血), the balance of Uem-Yang(陰陽) because the position of the Kwan-Pulse(關脈) came out after the time of .

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The Effect of Tokoro Rhizoma Pharmacopuncture at $KI_{10}$ in Lipopolysaccharide Induced Acute Nephritis in Rats (음곡에 시술한 비해약침이 Lipopolysaccharide로 유도된 흰쥐의 신장염에 미치는 영향)

  • Kim, Yun Joo;Kang, Jae Hui;Lee, Hyun
    • Journal of Acupuncture Research
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    • v.31 no.2
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    • pp.39-50
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    • 2014
  • Objectives : This study was designed to evaluate the effects of Tokoro Rhizoma pharmat $KI_{10}$ in nephritis induced by lipopolysaccharide(LPS) in rat. Methods : Rats were divided into 4 groups and 3 groups(LPS, saline, Tokoro Rhizoma pharmacopuncture(TR-P) group) were injected LPS to induce nephritis. TR-P group was treated with TR at $KI_{10}$ three times for a week, saline group with normal saline. To evaluate the effects of TR at $KI_{10}$ on nephritis in rats, white blood cell(WBC), neutrophil in blood, creatinine, cytokine-induced neutrophil chemoattractant-1(CINC-1) in serum and urinary volume, creatinine in urine, renal myeloperoxidase(MPO) were measured and renal tissue was analyzed. Results : TR-P group significantly reduced WBC, neutrophil in blood, creatinine, CINC-1 in serum, creatinine in urine and renal MPO than LPS group. TR-P group increased urinary volume but, not significant. Conclusion : TR at $KI_{10}$ has a therapeutic effect on nephritis in LPS stimulated rat. Therefore, it is suggested that TR at $KI_{10}$ may be an useful therapeutics for nephritis in clinical field after further researches.

Anti-inflammatory Effect on Desmodii Herba Pharmacopuncture at $KI_{10}$ on Nephritis in Rats (음곡 금전초약침이 LPS로 유도된 흰쥐의 신장염에 미치는 영향)

  • Yoon, Kwang-Shik;Kang, Jae-Hui;Lee, Hyun
    • Journal of Acupuncture Research
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    • v.28 no.3
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    • pp.43-54
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    • 2011
  • Objectives : This study was designed to evaluate the effects of Desmodii herb pharmacopuncture (DH-HA) at $KI_{10}$(Umgok) on nephritis induced by lipopolysaccharide(LPS) in rat. Methods : Rats were injected LPS to induce nephritis. DH-HA group was treated with DH-HA at $KI_{10}$ three times for a week, NP group with 26 gauge needle, saline group with normal saline. To evaluate the effects of DH-HA at $KI_{10}$ on nephritis in rats, RBC, WBC, neutrophil in blood, TNF-a, CINC-1 in serum, creatinine and total protein in urine, renal TNF-a, renal MPO were measured and renal tissue was analyzed. Results : WBC in blood, CINC-1 in serum, renal MPO significantly reduced in DH-HA group. Conclusions : DH-HA at $KI_{10}$ is effective for nephritis in LPS-induced rats. Therefore, DH-HA at $KI_{10}$ may be useful for nephritis in clinical field.

Effects of Kambi-bun-sim-ki-eum in Irritable Bowel Syndrome (과민성대장증후군(過敏性大腸症候群)에 대한 가미분심기음(加味分心氣飮)의 임상적(臨床的) 연구(硏究) -(총체적 만족도를 중심으로)-)

  • Kim, Yoon-Bum;Yoon, Sang-Hyub
    • The Journal of Internal Korean Medicine
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    • v.21 no.3
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    • pp.355-362
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    • 2000
  • This study was performed to evaluate the effect of Kami-bun-sim-ki-eum on irritable bowel syndrome and to find the factors valuable to diagnosis of symptom-complex of them. Four major sympoms were classified in all 31 paients(female 17, male 14), which was index of abdominal, fecal, autonomic dysfunction, and gastric dysfucton and pain severity score method was used in monitoring with the effect of Kamibun-sim-ki-eum on irritable bowel syndrome before and after adminstration of 2 packs I day for 10 days. We have found that Kami-bun-sim-ki-eum was effective only in female group ,but not in male and only sex factor was recognized significantly among factors to have influenced the effect of Kami-bun-sim-ki-eum. Rate of improvement was mean 61% in female, accompanied with improvement of each symptom after administration. Therefore, we have concluded that Kami-bun-sim-ki-eum can be applyed as one of an choice medicines in treating female irritable bowel syndrone.

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Fine Needle Aspiration Cytology of Ki-1 Positive Large Cell Lymphoma- A Case Report - (Ki-1양성 대세포림프종의 세침흡인 세포학적 소견 - 1예 보고 -)

  • Kwon, Kye-Hyun;Kwak, Jeong-Ja;Jin, So-Young;Lee, Dong-Wha
    • The Korean Journal of Cytopathology
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    • v.4 no.2
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    • pp.127-132
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    • 1993
  • Ki-1 lymphoma is a sort of high grade large cell lymphoma and defined on the basis of the reactivity of the tumor cells with monoclonal antibody Ki-1. On fine needle aspiration cytology, the reported case is rare and the differential diagnosis is not easy, especially from undifferentiated carcinoma and Hodgkin's lymphoma. We experienced a case of fine needle aspiration cytology of Ki-1 positive large cell lymphoma in a 61-year old male patient. Fine needle aspiration cytology from the cervical lymph node disclosed hypercellular smears with large single cells on polymorphous lymphoid background. The tumor cells had abundant dense cytoplasm and large nuclei with Irregular profiles. Although most cells were mononuclear binucleated and multilobed/multinucleated cells were also seen Immunohistochemistry was done and revealed strong positive staining for Ki-1 antigen.

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Apoptosis and Proliferative Activity of Non-Hodgkin's Lymphoma : Correlation with Bcl-2 and P53 Protein Expression (비호지킨림프종에서 아포프토시스 및 세포증식 : Bcl-2, P53 단백발현과의 관계)

  • Oh, Yoon-Kyeong;Lee, Mi-Ja;Jeon, Ho-Jong
    • Radiation Oncology Journal
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    • v.20 no.1
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    • pp.73-80
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    • 2002
  • Purpose : Tumor growth in a given neoplasm is the net result of cell proliferation and cell loss, and apoptosis is the most significant component of continuous cell loss in most tumors. In this study, we examined non-Hodgkin's lymphoma (NHL, n=67) immunohistochemically for the presence of Bcl-2 oncoprotein and P53 protein and compared apoptotic indices (Als) and Ki-67 proliferative indices (percentages of Ki-67 positive cells). Materials and Methods : 67 patients with NHL were evaluated : 3 low-grade and 64 intermediate-grade. The phenotype was determined in 65 cases : 47 $(70\%)$ were B cell type and 18 $(27\%)$ were T ceil type. Als and Ki-67 proliferative indices were determined immunohistochemically and the overexpression of P53 and Bcl-2 protein were also evalutated. Results : The overexpressions of Bcl-2 protein and P53 protein were found in $40\%$ (26/65) and $31\%$ (20/65). The Al ranged from $0\%\;to\;15\%$ (mean 2.16, median 1.2). Cellular Bcl-2, which counteracts apoptosis, was significantly (p=0.005) associated with Als. Ki-67 proliferative indices ranged from $1\%\;to\;91\%$ (mean 55.4), and P53 was significantly (p=0.000) associated with Ki-67 proliferative indices. A positive correlation between Als and Ki-67 proliferative indices was revealed (p=0.012) in Bcl-2 positive patients. Conclusion : In NHL, we observed a correlation between Als and Bcl-2 expression, between Ki-67 proliferative indices and P53 expression, and between Als and Ki-67 proliferative indices in Bcl-2 positive patients. Our results suggest that cell apoptosis may be inseparable from cell proliferation during tumor growth.

가미귀용탕(加味歸茸湯) 및 육미지황탕(六味地黃湯) 약침(藥鍼)이 생쥐의 성장(成長)에 미치는 영향(影響)

  • Kim, Min-Jung;Hong, Kwon-Eui
    • Journal of Pharmacopuncture
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    • v.9 no.3 s.21
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    • pp.105-116
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    • 2006
  • Objectives : To investigate the effect of Ga-mee-Gwui-ryong-tang herbal acupuncture(GR-HA) at GB39 and ST36 and the effect of Yuk-mee-ji-hwang-tang herbal acupuncture(YM-HA) at GB39 and KI10 on growth in mice. Methods : Mice were divided into 7 group(n=10) ; saline-ST36, saline-GB39 and KI10, GR-HA-ST36 group treated with GR-HA at right ST36, GR-HA-GB39 group treated with GR-HA at right GB39, YM-HA-GB39 group treated with YM-HA at right GB39, YM-HA-KI10 group treated with YM-HA at right KI10. Saline-ST36 group, saline-GB39 group and saline-KI10 group were injected with saline at right ST36, GB39, KI10 respectively. Saline injection and HA were performed 3 times a week for 18 days. The length(total height, body length and tail length), weight and the protein efficiency ratio were measured as well as IGF-1 level in serum. Results : 1. GR-HA at GB39 and GR-HA at ST36 promoted growth in weight, tail length and total height but there was no statistical significance. 2. GR-HA at GB39 significantly promoted protein efficiency on the 14th day and GR-HA at ST36 on the 3rd day. 3. GR-HA at GB39 significantly increased serum IGF-1. GR-HA at ST36 increased IGF-1 slightly but with no statistical significance. 4. YM-HA at GB39 and YM-HA at KI10 promoted growth in weight, height, tail length and total height but there was no statistical relevance. 5. YM-HA at GB39 and YM-HA at KI10 significantly promoted protein efficiency on the 14th day. 6. YM-HA at GB39 and YM-HA at KI10 significantly increased serum IGF-1. Serum IGF-1 level of YM-HA-KI10 group was significantly higher than that of YM-HA-GB39 group. 7. Serum IGF-1 level of GR-HA-GB39 group was significantly higher than that of YM-HA-GB39 group. Conclusions : GR-HA and YM-HA both may promote growth. This study suggests that herbal acupuncture at GB39 is more effective with Gwui-ryong-tang than Yuk-mee ji-hwang-tang to promote growth. It also suggests that Yuk-mee ji-hwang-tang herbal acupuncture is more effective at KI10 than at GB39.

Physiological Characteristics and Anti-diabetic Effect of Lactobacillus plantarum KI69 (Lactobacillus plantarum KI69의 생리적 특성 및 항당뇨 효과)

  • Kim, Seulki;Lim, Sang-Dong
    • Journal of Dairy Science and Biotechnology
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    • v.37 no.4
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    • pp.223-236
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    • 2019
  • This study aimed to investigate the physiological characteristics and anti-diabetic effects of Lactobacillus plantarum KI69. The α-amylase and α-glucosidase inhibitory activity of L. plantarum KI69 was 91.17±2.23% and 98.71±4.23%, respectively. The propionic, acetic, and butyric acid contents of the MRS broth inoculated with L. plantarum KI69 were 8.78±1.12 ppm, 1.34±0.07% (w/v), and 0.876±0.003 g/kg, respectively. L. plantarum KI69 showed higher sensitivity to penicillin-G, oxacillin, and chloramphenicol among 16 different antibiotics and showed the highest resistance to ampicillin and vancomycin. The strain showed higher β-galactosidase, β-glucosidase, and N-acetyl-β-glucosaminidase activities than other enzymes. Additionally, it did not produce carcinogenic enzymes, such as β-glucuronidase. The survival rate of L. plantarum KI69 in 0.3% bile was 96.42%. Moreover, the strain showed a 91.45% survival rate at pH 2.0. It was resistant to Escherichia coli, Salmonella Typhimurium, Listeria monocytogenes, and Staphylococcus aureus with the rates of 15.44%, 50.79%, 58.62%, and 37.85%, respectively. L. plantarum (25.85%) showed higher adhesion ability than the positive control L. rhamnosus GG (20.87%). These results demonstrate that L. plantarum KI69 has a probiotic potential with anti-diabetic effects.