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Ma, Sun Young,Park, Jin-Hee,Jung, Hana,Ha, Sung-Min,Kim, Yeonye,Park, Dong Hyen,Lee, Deuk Hee,Lee, Sooyong,Chu, In-Ho,Jung, So Young,Kim, Il-Hwan,Choi, Il-Whan,Choi, Chang Soo,Park, Saegwang Spandidos Publications 2017 ONCOLOGY REPORTS Vol.38 No.3
<P>Snail, a zinc-finger transcriptional repressor of E-cadherin expression, is one of the key inducers of epithelial-mesenchymal transition (EMT) in epithelial cancer. In breast cancer, EMT has been associated with malignancies, including metastasis, cancer stem-like properties, and resistance to chemotherapy and radiotherapy. In this study, we analysed the role of Snail in the highly metastatic mesenchymal TUBO-P2J mouse breast cancer cells, by loss of function using short hairpin RNA. Though silencing Snail did not restore the E-cadherin expression or induce morphological changes, Snail silencing significantly ablated in vitro and in vivo metastatic potentials. In addition, Snail silencing also reduced resistance to chemotherapy drugs and cancer stem-like properties, such as CD44 expression, aldehyde dehydrogenase (ALDH) activity, colony formation, and in vivo tumour formation and growth. However, radioresistance was not decreased by silencing Snail. Collectively, this study suggested that Snail is a main regulator of the maintenance of malignancy potentials and is a good target to prevent cancer metastasis and to increase chemotherapy susceptibility.</P>
식염과 Sage oil 및 수산화인회석 배합세치제의 치은염완화와 상아질지각과민완화효과에 관한 실용실험적 연구
마득상,박덕영,문혁수,백대일,김종배,배광학 대한구강보건학회 2000 大韓口腔保健學會誌 Vol.24 No.1
This double blind clinical study was done to assess the effects of the dentifrice containing 3.0% salt, 0.15% sage oil and 17% hydroxyapatite on gingivits and dentin hypersensitivity. 156 subjects were 20-25 year old females and divided into experimental and control group. Gingival index of marginal and papillary gingivae in the bimaxillary anterior teeth and dentin hypersensitiviy index were examined 3 times : baseline, after 1 and 5 months, The gingival index's scoring criteria is the same of L e and Silness' gingival index and dental hypersensitivity was scored by 4 grade which is were severe(1) to normal(4). The obtained results were as follows: 1. The dentifrice containing 3.0% salt, 0.15% sage oil and 17% hydroxyapatite was shown to provide significant reduction of gingivitis after 5 months(p<0.05). 2. The dentifrice containing 3.0% salt, 0.15% sage oil and 17% hydroxyapatite was shown to provide significant reduction of dentin hypersensitiviy 1 month(p<0.05).
Pyrophosphate 와 hydroxyapatite 및 Vitamin - E 배합세치제의 치은염완화효과와 치석형성억제효과에 관한 연구
마득상,박덕영,백대일,문혁수,김종배 대한구강보건학회 1998 大韓口腔保健學會誌 Vol.22 No.1
80 subjects completed a 3month, double blind clinical study which examine the effects of a 3.5% tetrasodium pyrophosphate/ 0.5% hydroxyapatite on the prevention of calculus formation and gingivitis. Control dentifrice had the same formulation with experimental dentifrice exept it did not contain pyrophosphate/hydroxyapatite, The subjects were divided by experimental and control group and received an oral prophylaxis on six lower anterior teeth. After an oral prophylaxis, experimental and control dentifrices were given to subjects according to assigned groups and assigned to use these dentifrices for the next 3 months. Calculus index was checked on 6 lower anterior teeth surfaces and Gingival Index was checked on all gingiva except 6 lower anterior teeth. Calculus index and Gingival index were scored 3 times: before an oral prophylaxis, after 4 and 12 weeks of use of each dentifrice, Modified Volpe-Manhold calculus index and Gingival index of Lo¨e & Silness were used to score each index. The obtained results were as follows; 1. 3.5% tetrasodium pyrophosphate/ 0.5% hydroxyapatite dentifrice was shown to provide a statistically significant reduction of gingivitis after 12 weeks(p<0.05). 2. 3.5% tetrasodium pyrophosphate/ 0.5% hydroxyapatite dentifrice was shown to provide a statistically significant reduction of calculus formation after 12 weeks(p<0.05).
마득상,박덕영,정세환,정상호,백대일,문혁수,김종배 대한구강보건학회 1998 大韓口腔保健學會誌 Vol.22 No.1
30 adult male and female subjects completed 4-week, double-blind clinical study comparing the effect on gingivitis of the dentifrice containing 0.76% sodium monofluorophosphate and 3.0% carbamide peroxide. Subjects were divided by two balanced groups according to baseline gingivitis scores. Gingivitis index was scored by Lo¨e-Silness' Gingival index. Microhardness of tooth enamel of the dentifrice containing 0.76% sodium monofluorophosphate and 3.0% carbamide peroxide and the dentifrice containing 0.38% sodium monofluorophosphate, 0.11% sodium fluoride, 0.5% hydroxyapatite, and 3.4% tetrasodium pyrophosphate was measured by microhardness tester(Shimadzu corporation Model, HMV-2000 No. 33100410, Japan) before and after 20,000 strokes with brushing machine, Brightness of tooth enamel of the dentifrice containing 0.76% sodium monofluorophosphate and 3.0% carbamide peroxide and the dentifrice containing 0,38% sodium monofluorophosphate, 0.11% sodium fluoride, 0.5% hydroxyapatite, and 3.4% tetrasodium pyrophosphate was measured by colorimeter before and after 200 strokes with brushing machine. The obtained results were as follows: 1. The dentifrice containing 0.76% sodium monofluorophosphate and 3.0% carbamide peroxide was shown to provide a statistically significant reduction in gingivitis than the control dentifrice after 4 weeks(P <0.05). 2, There was no statistical significant change in the microhardness between the dentifrice containing 0.76% sodium monofluorophosphate and 3.0% carbamide peroxide and the control dentifrice(P≥0.05). 3. There was no statistical significance of the microhardness changes between the dentifrice containing 0.38% sodium monofluorophosphate, 0.11% sodium fluoride, 0.5% hydroxyapatite, and 3.4% tetrasodium pyrophosphate and the control dentifrice(P≥0.05). 4. There was statistical significance of the brightness changes between the dentifrice containing 0.76% sodium monofluorophosphate and 3.0% carbamide peroxide and the control dentifrice(P<0.05). 5. There was statistical significance of the brightness changes between the dentifrice containing 0.38% sodium monofluorophosphate, 0.11% sodium fluoride, 0.5% hydroxyapatite, and 3.4% tetrasodium pyrophosphate and the control dentifrice(P<0.05).
Triclosan 과 Ursodesoxycholic acid 배합세치제가 치은염완화 및 치석형성억제에 미치는 영향에 관한 연구
마득상,박덕영,이승우,김종배,백대일,문혁수,이진환,김문수 대한구강보건학회 2001 大韓口腔保健學會誌 Vol.25 No.2
The aim of this study was to examine the effect of dentifrice containing 0.3% triclosan and 0.02% ursodesoxycholic acid(UDCA) on the reduction effect of gingivitis and calculus formation. The study participants was composed of 70 women for examining gingivitis and 40 men and women for examining calculus formation. All participants were aged 20-24 years. Participants and investigators were blinded to group assignment and followed for 12 weeks on gingivitis and for 4 weeks on calculus formation. We also investigated adsorbed/remaining concentration of triclosan of dentifrice dentifrice containing 0.3% triclosan and 0.02% UDCA on hydroxyapatite disk by laboratory study. Obtained results were as follows: 1. Adsorbed concentration and remaining concentration of triclosan in dentifrice on hyroxyapatite disk was increased about 70% and 9C% respectively by addition of UDCA(P<0.01). 2. After 12 weeks of use, gingivitis index was significantly reduced(P<0.05) among participants using dentifrice containing 0.3% triclosan and 0.02% UDCA while difference of gingivitis index of control group was not significant(P>0.05). 3. After 4 weeks of use, claculus formation was significantly reduced among participants using dentifrice containing 0.3% triclosan and 0.02% UDCA compared to the control group(P<0.05).