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백서 심근경색모델에서 시간경과와 경색의 크기에 따른 심자도의 변화
김미성(Mi Sung Kim),박영선(Young Sun Park),권순길(Sun Gil Kwon),지정훈(Jeong Hoon Ji),신종성(Jong Sung Shin),오광식(Kwang Sik Oh),양용모(Yong Mo Yang),연태진(Tae Jin Youn),김동운(Dong Woon Kim),조명찬(Myeong Chan Cho),이용호(Yong Ho 대한내과학회 2002 대한내과학회지 Vol.62 No.1
Background: Magnetocardiogram (MCG), which records the changes of magnetic fields generated by the heart`s electrical activity, theoritically can provide unique data for clinical application. To date, MCG has been investigated only at a single time point after myocardial infarction (MI) with severe left ventricular dysfunction in rats. The purpose of the present study was to investigate sequential changes of MCG after MI and to evaluate effects of infarct size on MCG. Methods: Acute MI were induced by the permanent ligation of left coronary artery in 22 rats. Magnetic fields were recorded just above a rat with Nb Superconducting Quantum Interference Device (SQUID) gradiometer inside a magnetically shielded room. MCG was measured before and immediately after surgery and it was subsequently recorded at the time points of 1, 4 and 6 hours post operatively. MCG was also measured at 1, 3, 7 and 21 days after surgery. Results: Elevation of ST segment and appearance of pathological Q wave on the MCG were evident immediately after the ligation of coronary artery and persisted to 6 hours after MI. On MCG, ST segment was depressed and T wave was inverted from 1 day after MI. In rats with small-and moderate- sized MI (infarct size〈30%), ST depression returned to near the isoelectric level and Q wave disappeared from 7 days after MI. However, ST depression and Q wave were still present in rats with larger infarct (infarct size≥30%). Conclusion: Evolutional changes of MCG were well-recognized up to 21 days after MI. Furthermore, the infarct size can be expressed by the extent of Q wave and ST segment depression on MCG. Taken together, these data indicate that MCG is a helpful modality for the diagnosis, evaluation of infarct size and follow up after MI.(Korean J Med 62:42-48, 2002)
향기요법이 통증을 주소증으로 입원한 환자의 수면장애에 미치는 영향
박수곤 ( Soo Gon Park ),양미성 ( Mi Sung Yang ),김오영 ( Oh Young Kim ),조희근 ( Hee Guen Jo ),최진봉 ( Jin Bong Choi ),김선종 ( Sun Jong Kim ),설재욱 ( Jae Uk Sul ) 한방재활의학과학회 2010 한방재활의학과학회지 Vol.20 No.4
Objectives :The purpose of this study is to investigate the effects of aroma therapy on sleep disorder patients with musculoskeletal pain. Methods :The 44 patients were divided into 2 groups: Experimental group(Exp. group) was treated with aroma therapy and control group was treated except aroma therapy. To evaluate the efficiency of aroma therapy, the Korean sleep scale A(Jin-Joo Oh, Mi-Soon Song, Sin-Mi Kim. 1998) and visual analogue scale(VAS) were applied before treatment and after 5 days treatment. Results :1. The Experimental group has improved statistical significance in sleep disorder score as compare to the control group. 2. The improvement of sleep disorder score of Exp.group has difference according to impression. 3. The improvement of sleep disorder has an effect on pain decrease. Conclusions :Aroma therapy has effects of improvement on sleep disorder with musculoskeletal pain.
악성흑색점흑색종 19예에 대한 임상 및 병리 조직학적 연구
홍원진 ( Won Jin Hong ),장홍선 ( Hong Sun Jang ),이상희 ( Sang Hee Lee ),이상은 ( Sang Eun Lee ),정기양 ( Kee Yang Chung ),노미령 ( Mi Ryung Roh ) 대한피부과학회 2016 大韓皮膚科學會誌 Vol.54 No.10
Background: Lentigo maligna melanoma (LMM) is a subtype of melanoma that typically develops on sun-damaged skin. LMM is estimated to comprise 4∼15% of melanomas, but the prevalence is known to be relatively lower in the Korean population than in the Caucasian population. Objective: To review the clinico-pathologic features and treatment outcomes of Korean patients with LMM. Methods: Nineteen patients diagnosed with LMM during 2003∼2015, in the Yonsei University Health System, were included in this study. The age and sex of the patients, lesion location, thickness (Breslow), stage, treatment methods, BRAF, NRAS, and KIT mutation status, and survival rates were analyzed. Results: Among the 19 Korean patients, 11 were male and 8 were female. The median age was 59.2 years. The most common site was the cheek (47.4%), followed by the scalp, eyelid, nose, forehead, lip, and neck. At the time of diagnosis, 13 patients were in localized stages (5 patients, stage 0; 3 patients, stage I; and 5 patients, stage II) and 6 patients were in advanced stages (3 patients, stage III; and 3 patients, stage IV). Patients in the localized stages showed better overall survival (OS) than those in the advanced stages (p=0.012). Nine patients were treated with a wide excision, and 6 using Mohs micrographic surgery. Three patients received high-dose interferon-α therapy; 6, chemotherapy; and 4, radiotherapy. Two patients in stage 0 were treated with topical ingenol mebutate. Two patients had BRAF V600E mutation; 1, NRAS G12R mutation; and 1, KIT mutation. Median OS of the patients was 40.8 months. Conclusion: Our analysis provides additional information about clinical characteristics, treatment, and prognosis of LMM in Korean patients. (Korean J Dermatol 2016;54(10):769∼775)
태양광 발전의 효율 향상을 위한 새로운 태양추적 알고리즘 개발
최정식(Jung-Sik Choi),고재섭(Jae-Sub Ko),강성준(Sung-Jun Kang),백정우(Jeong-Woo Baek),장미금(Mi-Geum Jang),김순영(Sun-Young Kim),정동화(Dong-Hwa Chung) 대한전기학회 2009 대한전기학회 학술대회 논문집 Vol.2009 No.10
This paper proposes a novel solar tracking algorithm for improving of photovoltaic(PV) efficiency with tracking method. A novel solar tracking algorithm calculates the global latitude and longitude of earth with sun. Also, it considers the refraction of atmosphere, annual oscillation and perturbation of moon. Proposed algorithm is applied the PV generation unit with tracking method and observes the azimuth and altitude. Observed data compare to korea astronomy observatory and conventional position solar algorithm(PSA) data and analyzes the accuracy. Therefore, the validity of this paper proves by analyzed data.
실용음악 전공 학생들의 발성치료 전후 성대 및 음성 특성 비교
황연신,심미란,김철준,최용석,김상연,최찬호,선동일,Hwang, Yeon Shin,Shim, Mi Ran,Kim, Chul Jun,Choi, Yong Suk,Kim, Sang Yeon,Choi, Chan Ho,Sun, Dong Il 대한후두음성언어의학회 2016 대한후두음성언어의학회지 Vol.27 No.2
Background and Objectives : Many students major in applied music singing have various difficulties in phonation when they sing or perform. But the studies about this cause are lack. The purpose of this study is whether singing voice therapy based on vocal music is effective or not to applied music singing students that have difficulties in phonation. Materials and Methods : Singing voice therapy program had been done to 8 students major in applied music singing during 7 weeks. We did laryngeal stroboscope, perceptual, acoustic and aerodynamic examination before and after singing voice therapy to this students. And we studied post examination results have differences or improvements compared to pre examination results. Results : Four male students don't have effective improvement after singing voice therapy but they shows slight improvement in aerodynamic examination values compared to pre examination values. Four female students shows improvement in aerodynamic examination values and pitch range increasing. Above all, one student's vocal nodules disappeared after singing voice therapy. Conclusion : Singing voice therapy based on music singing is very effective to the students major in applied music singing. Above all, their curriculum in applied music singing should include phonation training based on music singing before training perform and technic practices.
Novel Glycolipoproteins from Ginseng
Mi Kyung Pyo,Sun-Hye Choi,Sung Hee Hwang,Tae-Joon Shin,Byung-Hwan Lee,Sang-Mok Lee,Yoong-Ho Lim,Dong-Hyun Kim,Seung-Yeol Nah 고려인삼학회 2011 Journal of Ginseng Research Vol.35 No.1
Ginseng has been used as a general tonic agent to invigorate human body. In the present study, we isolated novel glycolipoproteins from ginseng that activate Ca²?-activated Cl- channel (CaCC) in Xenopus oocytes and transiently increase intracellular free Ca²? concentration ([Ca²?]i) in mouse Ehrlich ascites tumor cells. We named the active ingredients as gintonin. Gintonin exists in at least six different forms. The native molecular weight of gintonin is about 67 kDa but its apparent molecular weight is about 13 kDa, indicating that gintonin might be a pentamer. Gintonin is rich in hydrophobic amino acids. Its main carbohydrates are glucose and glucosamine. Its lipid components are linoleic, palmitic, oleic, and stearic acids. Gintonin actions were blocked by U73122, a phospholipase C inhibitor, 2-aminoethxydiphenyl borate, an inositol 1,4,5-trisphosphate receptor antagonist, or bis (o-aminophenoxy) ethane-N,N,N0,N0-tetracetic acid acetoxymethyl ester, a membrane permeable Ca²? chelator. In the present study, we for the fi rst time isolated novel gintonin and showed the signaling pathways on gintonin-mediated CaCC activations and transient increase of [Ca²?]i. Since [Ca²?]i as a second messenger plays a pivotal role in the regulation of diverse Ca²?-dependent intracellular signal pathways, gintonin-mediated regulations of [Ca²?]i might contribute to biological actions of ginseng.
( Mi Sung Park ),( Sun Wook Kim ),( Ki Tae Yoon ),( Seung Up Kim ),( Soo Young Park ),( Won Young Tak ),( Young Oh Kweon ),( Mong Cho ),( Beom Kyung Kim ),( Jun Yong Park ),( Do Young Kim ),( Sang Hoo 대한소화기학회 2016 Gut and Liver Vol.10 No.2
Background/Aims: To determine factors predictive of discordance in staging liver fibrosis using liver biopsy (LB) and acoustic radiation force impulse (ARFI) elastography in patients with chronic hepatitis B (CHB). Methods: Consecutive patients with CHB who underwent LB and ARFI elastography on the same day from November 2010 to March 2013 were prospectively recruited from three tertiary hospitals. Results: We analyzed 105 patients (median age of 47 years). The F0.1, F2, F3, and F4 fibrosis stages were identified in 27 (25.7%), 27 (25.7%), 21 (20.0%), and 30 (28.6%) patients, respectively. The areas under the receiver operating characteristics curves for ARFI elastography in assessing ≥F2, ≥F3, and F4 was 0.814, 0.848, and 0.752, respectively. The discordance of at least one stage between LB and ARFI was observed in 68 patients (64.8%) and of at least two stages in 16 patients (15.2%). In a multivariate analysis, advanced fibrosis stage (F3.4) was the only factor that was negatively correlated with one-stage discordance (p=0.042). Moreover, advanced fibrosis stage was negatively (p=0.016) correlated and body mass index (BMI) was positively (p=0.006) correlated with two-stage discordance. Conclusions: Advanced fibrosis stage (F3.4) was a predictor of nondiscordance between LB and ARFI elastography; BMI also influenced the accuracy of ARFI elastography. (Gut Liver 2016;10:275-282)
Midbrain atrophy in subcortical ischemic vascular dementia.
Sung, Young-Hee,Park, Ki-Hyung,Lee, Yeung-Bae,Park, Hyeon-Mi,Shin, Dong Jin,Park, Jea-Sul,Oh, Mi-Sun,Ma, Hyeo-Il,Yu, Kyung-Ho,Kang, Suk-Yun,Kim, Yun Joong,Lee, Byung-Chul Springer-Verlag [etc.] 2009 Journal of neurology: Zeitschrift für Neurolo Vol.256 No.12
<P>Magnetic resonance imaging (MRI) has revealed age-related changes in midbrain volume in normal subjects. Atrophy of the midbrain in patients with progressive supranuclear palsy (PSP) has been demonstrated using conventional brain MRI, and it was recently reported that some patients with vascular dementia also have midbrain atrophy. The aim of the present study was to investigate if the patients with subcortical ischemic vascular dementia (SIVD) have atrophic changes in the midbrain. MRIs of 23 SIVD patients, 18 probable PSP patients, and 96 controls were retrospectively analyzed. Differences in the distances between midbrain structures were compared across the patient groups and controls. We measured the anteroposterior diameter (AP), and the distance between the interpeduncular fossa and the aqueduct (IF???AQ), the aqueduct and posterior margin of the superior colliculi (AQ???SC), and the peduncular prominence and the interpeduncular fossa (PP???IF) of the midbrain. The AP diameter and IF???AQ were negatively correlated with age in normal controls (r = -0.21, p < 0.005 for AP; r = -0.14, p < 0.0001 for IF???AQ). In SIVD patients, the AP diameter and IF???AQ were both significantly smaller than in controls (p < 0.001). Changes in the midbrain found for SIVD patients were similar to those seen in PSP patients. Our results suggest that the midbrain decreases in size with normal aging, especially around the tegmental region. This change is more pronounced in patients with SIVD and in patients with PSP. Prospective functional studies are needed to ascertain the clinical relevance of midbrain atrophy in SIVD.</P>