Mito-Tempo Can Protect Against the Allergic Airway Inflammation through Reducing Mitochondrial ROS Generation

( So Ri Kim ),( Yong Chul Lee ),( Dong Im Kim ),( Yang Keun Rhee ),( Heung Bum Lee ),( Seoung Ju Park ),( Chi Ryang Chung ),( Seung Yong Park ),( Mi Ran Kang ) 대한결핵 및 호흡기학회 2012 대한결핵 및 호흡기학회 추계학술대회 초록집 Vol.114 No.-

Oxidative stress is well known to be implicated in the development of asthma. The mitochondrial respiratory chain is a major site of intracellular reactive oxygen species (ROS) generation and, at the same time, an important target for the damaging effects of ROS. Mito-Tempo is a specific mitochondrial ROS inhibitor and it is known to be associated with opening of mi-tochondrial permeability transition pore and inhibition of cell necroptosis or apoptosis. However, there is little information on the protective effects of Mito-Tempo on the inflammatory airway disorders including bronchial asthma and its acute exacerbation. We investigate the effects of Mito-tempo on the allergic airway inflammation and hyperresponsiveness using the mice sensitized with OVA and LPS and then challenged with OVA (OVALPS-OVA mice). The OVALPS-OVA mice showed the typical features of neutrophilic asthma; increased airway inflammatory cells, the pathologic changes, the increased levels of Th2 cytokines in lungs of OVALPS-OVA mice, increased mitochondrial ROS generation, and increased bronchial hyperresponsiveness. Interestingly, we found that in OVALPS-OVA mice, Mito-Tempo, a novel mitochondrial targeting agent significantly reduced the increases in inflammatory cytokines, mitochondrial ROS generation, airway inflammation, and bron-chial hyperresponsiveness. These findings indicate that mitochondrial dysfunction including oxidative damage may be im-plicated in the pathogenesis of bronchial asthma and provide the therapeutic potential of a mitochondrial targeting agent, Mito-Tempo, for bronchial asthma.

오디 추출액 첨가비율에 따른 오디편의 품질특성에 관한 연구

김애정,김미원,우나리야,김명희,임영희 한국조리과학회 2003 한국식품조리과학회지 Vol.19 No.6

Oddi is a mulberry (Morus alba L) fruit which has antiinflammatory and antioxidative effects. This study was carried out to investigate the quality characteristics of Oddi-Pyun which was manufactured with various addition levels (0, 0.5, 1, 2, 4%) of Oddi extract according to the traditional Korean Kwaypun (a kind of jelly) methodology. Oddi-Pyun was made with various levels of Oddi extract, mungbean starch (9%) and sugar (30%). To establish the additional amount of mulberry fruit extract, sensory evaluation and physical test were carried out. From the results of sensory evaluation, the 2% of Oddi-Pyun was judged as the best in terms of color, flavor, hardness and elasticity. According to texture characteristics (hardness, adhesiveness, springiness, gumminess and chewiness), 1.0% and 2.0% of Oddi-Pyun were judged as the best. The contents of Ca (69.50, 74.75, 84.25, 100.60, 183.55ppm), Mg(27.37, 29.38, 34.20, 46.73, 97.45ppm) and Fe (320.23, 572.45, 680.50, 725.95, 906.50ppb) increased with increasing Oddi extract. Therefore, the optimal added amount of extract for the manufacture of Oddi-Pyun was proposed as 2% to the total weight. It was concluded that this Oddi-Pyun would be helpful to improve the health status of rheumatics and patients with similar diseases.

MTA와 4-META/MMA & TBB레진 혼합 재료의 치근단 미세누출에 관한 연구

김진철,김미리,고현정,양원경 大韓齒科保存學會 2009 Restorative Dentistry & Endodontics Vol.34 No.4

이 연구에서는 Mineral Trioxide Aggregate (MTA)와 4-methacryloxyethyl trimellitate anhydride (4-META)/methyl methacrylate (MMA) & tri-n-butylborane (TBB) 레진을 혼합하여 치근단 역충전 재료로 사용하였을 때의 미세누출을 MTA, 포틀랜드 시멘트와 비교하였다. 발치된 사람 치아의 근관형성 및 충전 후 치근단 절제와 역충전 와동을 형성하였다. MTA, Portland cement, MTA와 4-META/MMA & TBB레진을 혼합한 각각의 재료로 치근단을 역충전한 후 methylene blue dye에 72시간 동안 침적하여 염료가 침투한 길이를 10배 현미경 하에서 측정하였다. MTA와 4-META/MMA & TBB 레진 혼합 충전 군에서는 포틀랜드 시멘트나 MTA 충전군보다 통계적으로 유의하게 적은 미세 누출을 보였으며 , 포틀랜드 시멘트와 MTA 충전군의 미세 누출 정도는 통계적으로 차이가 없었다. 이 실험의 결과로 보아 MTA와 4-META/MMA & TBB레진 혼합 재료는 치근단 역충전시 포틀랜드 시멘트나 MTA에 비해 낮은 초기 미세누출을 보여, 치근단 봉쇄 효과가 우수한 것으로 사료된다. We evaluated in vitro microleakage of Mineral Trioxide Aggregate (MTA) powder with 4-methacry-loxyethyl trimellitate anhydride (4-META) / methyl methacrylate (MMA) & tri-n-butylborane (TBB) resin as a retrograde filling material by using methylene blue dye method. Fifty-two single rooted, extracted teeth were instrumented and obturated with gutta percha and AH plus sealer. The apical 3mm of each root was resected and 3mm deep ultrasonic root end preparation was done. External surface of roots was coated with nail varnish. Prepared teeth were randomly divided into five groups: Negative control: completely covered with nail varnish; Positive control: coated with nail varnish except for apical foramen; Group 1 (retrofilled with Portland cement); Group 2 (retrofilled with MTA) ; Group 3 (retrofilled with MTA powder mixed with 4-META/MMA & TBB resin). Immediately after completion of root-end filling, all specimens were submerged in methylene blue dye for 72 hours in 37℃ incubator. The roots were longitudinally sectioned and measured for extent of dye penetration by three different examiners under microscope (×10). The results were statistically analyzed using one way ANOVA and Turkey's HSD test. No leakage was evident in negative control and complete leakage in positive control group. Group 3 showed significantly less leakage than group 1 and 2 (p < 0.01). There was no significant difference between group 1 and 2 (p > 0.01). It was concluded that MTA powder with 4-META/MMA & TBB resin was excellent in reducing initial apical microleakage. 〔J Kor Acad Cons Dent 34(4):371-376, 2009〕

수종 복합레진에 있어서 효소 역할에 의한 표면 경도와 조도 변화에 관한 연구

김미리,이명종 大韓齒科保存學會 1995 Restorative Dentistry & Endodontics Vol.20 No.1

AbstractThe purpose of this study is to investigate a possible contribution of nonspecific esterases, which occur in the oral cavity, to the degradation of ester bonds in polymethacrylates. One of the problems connected with the use of composite resins for restorations is their inadequate resistance to wear. It has been shown that methacrylate hydrolysis can be cataly- zed by enzymes and that a carboxylic hydrolase (porcine liver esterase) catalyzed the hydrolysis of several mono- and dimethacrylates. The softening effect on a BISGMA/TEG- DMA polymer induced by hydrolase will accelerate the in vivo wear of the polymer.Porcine liver esterase (EC 3.1.1.1) in 3.2 mol/L (NH<아래첨자>4</아래첨자>)<아래첨자>2</아래첨자> S0<아래첨자>4</아래첨자>was obtained from Sigma Chemical Company. The esterase activity of one unit is defined as the amount of enzyme capable of hydrolyzing Ifimol ethyl butyrate per min at pH 8.0 AT 25℃. Phosphate buffer, 10mmol/L, pH 7.0, was made by adjustment of a solution of Na<아래첨자>2</아래첨자>HPO<아래첨자>4</아래첨자> with H<아래첨자>3</아래첨자>P0<아래첨자>4-</아래첨자> Composite resins used in this study are Silux Plus, Z-100, Durafil VS, and Prisma APH.Cylindrical specimens, 14mm in diameter and 3mm thick, of Silux Plus, Z-100, Durafil VS, Prisma APH were polymerized under the celluloid strip. 60 specimens were divided into 2 groups. One group was emersed only in buffer solution, the other group was emersed in buffer and enzyme solution. Silux Plus and Z-100 were divided into 2 subgroups, one subgroup was cured only Visilux 2. And the other subgroup was cured Visilux 2 and Triaid II.Thereafter, specimens were polished to its best achievable surface according to manufac- ture"s directions. The Vickers hardness of the specimens was measured after 1, 2, 4, 7, 9, 15, 50 days. The solutions were changed after each measurement. Composite resin surfa- ces were evaluated for the surface roughness with profilometer (α-step 200, Tencor instru- ments, USA) after 1 and 50 days. And then surfaces of specimens were pictured with stereosopy after 1 and 50 days.The results were as follows. 1. The surface hardness of Silux plus, durafil VS, and Prisma APH were decreased with time. But, the surface hardness of Z-100 was not decreased. 2. The surface hardness of all composite resins was decreased by esterase. 3. Composite resins, which were light-cured by Visilux 2 and concomitantly baked by oven, showed more hardened surface than light-cured by Visilux 2 only. 4. Significant surface changes were occured in Silux plus after esterase treatment.

중금속 이온 존재 하에서의 아스코르브산 자동산화반응에 대한 단백질의 영향

김미옥,유리나 울산대학교 2002 생활과학논문집 Vol.4 No.1

Effects of superoxide dismutase(SOD), catalase, and such other proteins as bovine serum albumin(BSA), ovalbumin, lysozyme, and γ-globulin on the autoxidation rates of L-ascorbic acid(AsA) in the presence of heavy metal ions in aqueous solution and buffer solution were studied. AsA was dissolved in a ultra-refined water and 0.07 M potassium phosphate buffer (pH 7.4, treated Chelex-100) at a concentration of 50μM and 5 μM Fe(Ⅲ) or 0.1 μM Cu(Ⅱ) was added, and a oxygen gas was bubbled through the solution at a flow rate of 200 ml/min at 35℃. The amount of remaining AsA in the reaction mixture was determined by using a UV spectrophotometer(at 265 nm). It was confirmed that the ratio of remaining AsA was significantly larger in the presence of SOD, catalase, BSA, ovalbumin, lysozyme, and γ-globulin than in the absence of proteins. It was suggested that the non-enzymatic effects of SOD, catalase and some other proteins might be involves in the stabilization of AsA.

폴리페놀류와 Folin-Ciocalteu 시약의 반응성에 미치는 Metal Ion의 영향

최유미, 김미리, 홍정일 서울여자대학교 자연과학연구소 2014 자연과학연구논문집 Vol.26 No.-

Curcuminoids의 pH별 저장조건에 따른 감소양상 분석

김미리,홍정일 서울여자대학교 2010 자연과학연구논문집 Vol.22 No.-

Curcuminoids from the rhizome of Curcuma longa L. are orange-yellow pigments that have been shown to have various biological activities. In the present study, changes in chemical stabilities and degradation patterns of curcuminoids, including curcumin, demethoxycurcumin (DMC), and bisdemethoxycurcumin (BMC), in different pH conditions were investigated using a reverse phase HPLC system. Among the 3 curcuminoids, stability of curcumin in weak alkaline (pH 7.4-8.0) conditions was most considerably reduced by 55-85% within 1 hr incubation. The absolute values of slope from a regression equation between residual levels of curcumin, DMC, or BMC and incubation time were 1.31, 1.08, or 0.25, respectively, during 12.5 min incubation at pH 7.4, indicating that degradation of curcumin was much faster than those of DMC and BMC. Degradation rate of curcuminoids was much higher especially at initial periods (within 12.5 min) during 24 hr incubation. Stability of curcumin was also most sensitive according to increase of incubation pH, as compared to DMC or BMC. These results suggest that stability and different degradation patterns of curcuminoids need to be carefully considered for evaluation of their bioactivity and application to food systems.

MCT 대체 마요네즈의 물성적 특성 및 기호도에 관한 연구

우나리야,안명수,김애정,김미원 혜전대학 식품산업연구소 2003 식품산업연구지 Vol.5 No.-

The study was carried on the rheological properties and sensory evaluations of mayonnaise substitued by MCT. Nowdays we are consideration of the fat replacer and fat substitutes. It was known that fat and oils had become causes for cardiac disease, obesity and cancer, so the new materials were needed for fat replacer. MCT(medium chain triglyceride) is one of the fat bsed substitutes used as fat replacer. In case of making of mayonnaise substituted by MCT, springiness of mayonnaise prepared with SO substituted by over 20% MCT increased highly, cohesiveness of mayonnaise made of 10-20% MCT substitution was similar to that made without MCT. And hardness, gumminess, and chewiness of mayonnaise prepared with 10-30% MCT substitution were similar or increased more or less to that made with SO only. In the result of color measurement by colorimeter brightness of that made with SO substituted by 10-30% MCT was similar to that made with SO only, redness was almost same without differences significantly in all samples with or without MCT, but yellowness was decreased highly over 10% MCT substitution. By the results of sensory evaluations, appearance, color, and flavor of cakes prepared with CO substituted by MCT until 100% were shown to be better, and taste was better in range of 30% MCT substitution, but texture had lower acceptability than those of cake made without MCT. While in case of mayonnaise, appearance, color, flavor, texture, and taste were obtained worse score, overall acceptance was similar in the range of 10% MCT substitution but was decreased highly upon MCT substitution ratios increase over 20% substitution than that made with SO only. Respecting that the necessity of fat substitute become real situation in dietary in the future, it will be suggested that many foods containing fats and oils will substitute by MCT and another fat replacer.

여대생들의 SNS와 소통 : 서울여자대학교 재학생의 Twitter 및 Facebook 활용을 중심으로

박미현,전유리,김유솔,신윤지,노승용 서울여자대학교 2010 여성연구논총 Vol.25 No.-

This study focuses on the characteristics of communication by such social network service (SNS) as Twitter and Facebook. In order to achieve the goal of this study, interview to students in Seoul Women's University was introduced to figure out such communicative behavior using SNS as frequency, motivation, purposes, and effects of SNS. The interview results show that students in Seoul Women's University have strong desire to communicate each other and SNS is one of digital mechanism to enhance their communication. Also, the results point out that interviewees communicative behavior using SNS can be categorized into two types of communication, network- oriented communication to promote friendship and fact-oriented communication to collect and share information. Moreover, interviewees indicate that SNS has both positive and negative (for example, privacy and security, time-consuming, false information, and addiction) aspects, as a results, users' self-control and digital competency should be improved. 소통은 인간 사회의 핵심 가운데 하나이다. 인간은 다른 사람들과 소통하고 싶어 한다. 즉, 상대방에 대해 알고 싶어 하는 동시에 자신을 알리고 싶어 하는 욕구를 가지고 있다. 인간의 소통에 대한 욕구를 충족시키는 방법은 시대의 발전에 따라 변화해왔다. 수천년 전부터 인류는 직접 만나서 언어로서 서로의 감정을 표현하고 정보를 교환하며 지내왔다. 즉, 이 시기에는 소통에서의 시간적․공간적 제약이 존재하였다. 그러나, 문자와 종이가 발명되면서 인류는 소통에서의 시간적․공간적 제약을 극복하기 시작하였다. 인류의 소통은 전화의 발명으로 한발 더 나아가게 되었으며, 디지털 혁명은 인간에게 시간적․공간적 제약을 뛰어넘는 소통을 가능하게 해 주었다. Bill Gates가 “PC는 인간이 만든 도구 중 인간에게 가장 많은 권한을 부여하는 도구라고 자신있게 말할 수 있다. PC는 소통의 도구, 창의력의 도구이며 사용자가 직접 만들어 나갈 수 있다(I think it's fair to say that personal computers have become the most empowering tool we've ever created. They're tools of communication, they're tools of creativity, and they can be shaped by their user.)”라고 주장한 바와 같이, PC와 인터넷의 급속한 발전으로 시발된 디지털 혁명은 인간의 소통에도 20세기 후반에는 상상도 할 수 없었던 큰 변화를 가져왔다. 소위 제 3의 물결(Toeffler, 1980)이라 불리는 정보화 시대의 물결을 타고 현대인들의 소통에 대한 욕구를 더욱 더 편리하게 발현 할 수 있도록 하는 수단의 변화를 가져왔다. 현 시대의 사람들이 행하는 소통의 행태는 전통적인 소통의 방법과 디지털 네트워크의 소통방법이 함께 어우러져 행해지는 모습을 보이고 있고, 이와 더불어 인터넷 등을 통한 가상 커뮤니케이션의 방법으로도 이루어지고 있다. 그리고 디지털 네트워크 기술 발전에 따른 해당 시스템의 이용자가 증가하고 있으며, 관련 시스템이나 모바일 어플리케이션도 지속적으로 개발되어 유통되고 있다. 이러한 디지털 네트워크 발전 속에서 Social Network Service(이하 SNS)가 새롭게 등장했다. 정보기기와 해당 시스템의 발전으로, 면대면 형식의 소통을 벗어나 SNS를 통한 온라인상의 소통이 가능하게 되었고, 이는 다른 소통의 방법보다 상대적으로 편리함을 제공하여 SNS 이용자들에게 폭발적인 반응을 불러일으켰다. 2010년 초 미국에서 처음 쓰이기 시작한 신조어로 ‘TGIF’가 있다. ‘TGIF’는 트위터, 구글, 아이폰, 페이스북 등 스마트 열풍의 진원지라 할 수 있는 네 가지 서비스를 통칭하는 표현이다. TGIF가 급속히 확산된 지난 2년간 세계인들은 정치․경제․사회․문화 모든 면에서 큰 변화를 겪었다. 2008년 당선된 미국의 오바마 대통령은 세계 최초의 트위터 대통령이라 할만하며, 2011년 초에 발생한 튀니지의 ‘재스민 혁명’과 이집트의 ‘키파야 혁명’ 또한 ‘TGIF’의 소산이었다. 오바마 대통령의 당선 이후 유튜브 정치(YouTube Politics)란 용어가 탄생하였고, 2011년 1월 26일 미국 오바마 대통령의 연두교서는 유튜브를 통해 세계에 생중계 되었다. 이러한 정치 분야에서의 소통 뿐만 아니라 기업이 직접 SNS계정을 만들어 네트워크상에서 자신의 고객과의 소통을 하는 기업이라는 조직 대 개인의 소통도 증가하고 있다. KT나 삼성 등의 대기업 등은 SNS를 이용한 고객과의 소통을 통해 기업이미지 제고와 고객과의 친밀함을 시도하고 있는 것은 이미 주위에서 많이 볼 수 있다.

Curcumin과 Protoporphyrin류 화합물의 상호작용에 의한 형광특성 변화

김현정,김미리,최보희,홍정일 서울여자대학교 자연과학연구소 2013 자연과학연구논문집 Vol.25 No.-

Curcumin, a dietary polyphenol from Curcuma longa L., has been reported to show many beneficial bioactivities. Protoporphyrins are widely distributed in various natural sources. They are also intermediates in the endogenous synthesis of heme and commonly form a complex with metal ions. In the present study, we investigated changes in fluorescence properties of curcumin and protoporphyrin IX (PPIX) through their interactions. Fluorescence intensity of curcumin increased concentration-dependently showing a peak emission at 535 nm with an excitation at 440 nm. Curcumin fluorescence was not changed by PPIX; the fluorescence intensity of PPIX significantly decreased in the presence of curcumin. Curcumin fluorescence decreased time-dependently; the fluorescence from PPIX was rather enhanced according to time, which was less pronounced in the presence of curcumin. Curcumin fluorescence in cells decreased markedly, which is slightly enhanced by co-treatment of PPIX. Curcumin fluorescence also decreased by zinc protoporphyrin; the fluorescence from ZnPP was also quenched by curcumin. The present results suggest a possible interaction of metal porphyrins with curcumin, which may influence on their bioactivities.