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심근경색 모델 흰쥐에서 스트레스가 B-type Natriuretic Peptide 발현 및 심박변이율 변화에 미치는 영향
이삼윤(Sam Youn Lee),이미경(Mi Kyoung Lee),김남호(Nam-ho Kim),주민철(Min Cheol Joo),조항정(Hyang Jeong Jo),강지숙(Ji Sook Kang),김병숙(Byung Sook Kim),윤선식(Sun Sik Yoon),최을식(Eul Sig Choi),이문영(Moon Young Lee) 대한스트레스학회 2010 스트레스硏究 Vol.18 No.3
심박변이율의 감소는 심근 경색 환자에서 예후의 악화와 관련되어 있다. 심박변이율 중 very low frequency가 심부전환자의 예후를 판단할 수 있는 독립적 인자로서 사용이 가능하다고 보고된 바 있으며, 심실의 압력 증가에 반응해서 생성되는 B-type natriuretic peptide가 심근 경색의 예후 인자로서 사용할 수 있음 역시 보고된 바 있다. 본 연구에서는 심근경색 모델을 제작하여 일정의 회복 기간을 거친 다음 다시 일정 기간의 스트레스를 겪게 한 후 심박변이율의 변화 및 심실 조직에서의 BNP 발현 정도를 비교하여 스트레스에 의한 영향을 관찰하고자 하였다. Sprague-Dawley계 수컷 흰쥐 15마리를 대상으로 하였다. 실험동물은 인위적 스트레스 및 수술을 받지 않은 대조군(CON, n=5), 심근경색 수술을 받은 후 restraint stress를 받지 않은 군(MI+No Stress, n=5), 심근경색 수술을 받은 후 1주일 동안 restraint stress를 받은 군(MI+Stress, n=5)으로 분류하였다. 심근경색 모델 제작 직후 15분 이상 심전도의 변화를 기록하였으며, 2개월 정도 후 심근경색 수술을 받은 동물을 두 군으로 나누어 그 중 한 군에는 1주일 동안 restraint stress를 가한 후 restraint stress를 가하지 않은 동물과 심박변이율을 비교 분석하였다. 심실 조직은 좌심실 전벽 부위의 위축을 관찰할 수 있었고, 대식세포에 의하여 응고, 괴사된 심근세포의 탐식과 혈관이 풍부한 육아조직 및 섬유 변화를 볼 수 있었다. 심박변이율은 심근경색 수술을 받은 직후 심박수는 유의한 증가를 보였고, standard deviation of the normal to normal intervals (SDNN), very low frequency (VLF) 및 low frequency (LF)의 유의한 감소를 보였다. 심근경색 수술을 받았던 동물에서 두 달 정도의 회복 기간을 거친 후 스트레스를 받지 않은 군은 심박수 및 기타 심박변이율 분석에서 SDNN 값을 제외하고는 정상군과 유의한 차이를 관찰할 수 없었던 반면 1주일 동안 스트레스를 받은 군에서는 심박수가 다시 유의하게 증가했을 뿐만 아니라 SDNN, VLF 및 LF 역시 정상군과 유의한 차이를 보였다. 이상의 결과를 종합하면 심근경색 동물에 대해 1주일 동안 스트레스를 가한 결과 심박변이율이 감소하고 심실에서의 BNP 발현은 더욱 증가하여 악화함을 보여주고 있다. Diminished heart rate variability (HRV) is associated with less favorable prognosis after myocardial infarction (MI). It has been reported that very low frequency (VLF) power in HRV analysis is an independent risk predictor in patients with congestive heart failure and B-type natriuretic peptide (BNP) can be used as a prognostic factor of MI. The purpose of this study was to investigate whether stress has an effect to the changes of BNP expression and/or heart rate variability in MI model in rats. Male Sprague-Dawley rats were divided into 3 groups: control group (CON), MI group (MI+No Stress), and MI followed by stress group (MI+Stress). MI+Stress group rats were raised for a two month recovery period after the operation, followed by being exposed to restraint stress for 2 hours per day for 1 week. Electrocardiogram was recorded after the operation and the last day after 1 week of stress. The frequency components of HRV were calculated in the frequency domain such as VLF, low frequency (LF), high frequency (HF) and so on. In HRV analysis, standard deviation of the normal to normal intervals (SDNN) was significantly reduced in both groups compared to the control group. VLF and LF also were significantly reduced in MI+Stress group compared to the control groups. In addition, BNP expression in western blotting was shown the strongest bands in MI+ Stress group among experimental groups. These results suggest that BNP and HRV were aggravated by stress in MI rat model. (Korean J Str Res 2010;18:275∼285)
Histone deacetylase 3 is selectively involved in L3MBTL2-mediated transcriptional repression
Yoo, Jung-Yoon,Choi, Kyung-Chul,Kang, HeeBum,Kim, Young Jun,Lee, Jeongmin,Jun, Woo Jin,Kim, Mi-Jeong,Lee, Yoo-Hyun,Lee, Ok-Hee,Yoon, Ho-Geun Elsevier 2010 FEBS letters Vol.584 No.11
<P><B>Abstract</B></P><P>This is the first report that L(3)mbt-like 2 (L3MBTL2) specifically interacts with the histone deacetylase domain of histone deacetylase 3 (HDAC3) via its MBT domain. Here, we show that L3MBTL2 selectively interacts with HDAC3, but not other class I HDACs. An in vitro peptide-binding assay demonstrated the specific association of HDAC3 with methylated histone-K20 tail and L3MBTL2. Furthermore, depletion of HDAC3 resulted in a decrease of methylated K20-H4, as well as an increase in acetylated histone H3. Consequently, HDAC3 knock-down selectively suppressed L3MBTL2-mediated transcriptional repression. Taken together, our results reveal the concerted action of both HDAC3 and L3MBTL2 in histone deacetylation and methylation-dependent transcriptional repression.</P><P><B>Structured summary</B></P><P>MINT-7719975: <I>L3MBTL2</I> (uniprotkb:Q969R5) and <I>HDAC3</I> (uniprotkb:O15379) <I>colocalize</I> (MI:0403) by <I>fluorescence microscopy</I> (MI:0416)</P><P>MINT-7719941, MINT-7719921: <I>L3MBTL2</I> (uniprotkb:Q969R5) <I>binds</I> (MI:0407) to <I>HDAC3</I> (uniprotkb:O15379) by <I>pull down</I> (MI:0096)</P><P>MINT-7719991: <I>HDAC3</I> (uniprotkb:O15379) <I>physically interacts</I> (MI:0915) with <I>L3MBTL2</I> (uniprotkb:Q969R5) by <I>anti bait coimmunoprecipitation</I> (MI:0006)</P><P>MINT-7719958: <I>L3MBTL2</I> (uniprotkb:Q969R5) <I>physically interacts</I> (MI:0915) with <I>HDAC3</I> (uniprotkb:O15379) by <I>anti tag coimmunoprecipitation</I> (MI:0007)</P><P>MINT-7719897: <I>HDAC3</I> (uniprotkb:O15379) <I>physically interacts</I> (MI:0915) with <I>L3MBTL2</I> (uniprotkb:Q969R5) by <I>two hybrid</I> (MI:0018)</P>
최미혜,김경희,김귀옥,김기숙,김수강,김정신,김춘숙,노흥진,박지연,성혜연,오명선,이선희,이원옥,이윤영,이현수,장명재,차혜경,채정선,홍상희 중앙대학교 의과대학 간호학과 간호과학연구소 2001 중앙간호논문집 Vol.5 No.1
This study was designed to exam the aged's needs for spiritual nursing care. The purpose was to serve as a basis for the development of spiritual nursing practice. The major findings are as follows : 1. The degree of needs for spiritual nursing care as area was that needs of love and relationship mean 22.0, needs of meaning and object mean 28.2, needs of forgiving mean 13.5. Total needs for spiritual nursing care mean 63.7, which was on the upper middle level. The needs of meaning and object was rated highest. 2. Among the general characteristics of the subjects, needs of love and relatiohship wasn't significanlty different. 3. Among the general characteristics of the subjects, needs of meaning and object was significantly different according to two factors : age(F=7.260, p=0.001), religion(F=5.275, p=0.001). Higher needs of meaning and object was possessed by the older than the younger, by the one who have religion than the other. 4. Among the general characteristics of the subjects, four factors made a significantly difference to needs of forgiving : sex(t=-2.851, p=0.006), age(F=8.201, p=0.001), religion(F=6.928, p=0.000), disease(t=2.327, p=0.024). Higher needs of forgiving was possessed by man than woman, by the older than the younger, by the one who have religion than the other, by the one who have disease than the other.
절수에 의한 Mongolian Gerbil 장기중량변화에 관한 분석연구
김무강,이기훈,이강이,송치원,이경열,권효정,박미선,정승혁,이행연,김명철 충남대학교 수의과대학 동물의과학연구소 2000 動物醫科學硏究誌 Vol.8 No.-
In this study, authors measured the each organ weight of the long term water deprived Mongolian gerbil, after then we calculated the mean, standard deviation, variance coefficient of the real measured organ weight and induced the organ weight change quantity, rate of quantity, deviation between measured and theological organ weight, deviation rate, sum of deviation rate, organ weight change rate, rate of organ weight by the mathematical formula. The results obtained as follow 1. The weight of the brains, lung, and testis were abruptly decreased after water deprived until the 5th day, after then slowly decreased until the 20th day. 2. The weight of the heart was decreased gradually from the first day until the 20th day. 3. The weight of the liver was abruptly decreased until the 10th day, after then the more slowly decreased until the 20th day. 4. The weight of the thymus, spleen, kidney, and pancreas were abruptly decreased until the 15th day, after then increased slowly until 20th day but the weight of the kidney was abruptly increased from the 10th day. 5. The organ weight change rate and the rate of the each day organ weight were very diversified.
( Byung Heon Kang ),( Soon Young Hwang ),( Jeong Yeop Kim ),( Yu Ah Hong ),( Mi Yeon Jung ),( Eun Ah Lee ),( Ji Eun Lee3 ),( Jae Bok Lee ),( Gang Jee Ko ),( Heui Jung Pyo ),( Young Joo Kwon ) 대한내과학회 2015 The Korean Journal of Internal Medicine Vol.30 No.6
Background/Aims: To prevent hypocalcemia after parathyroidectomy (PTX), parenteral calcium is required in addition to oral calcitriol and calcium. After switching to oral calcium, patients can be discharged from the hospital. The aim of this study was to analyze the clinical characteristics and outcomes of PTX performed at a single Korean center and to investigate the associated laboratory factors used to analyze the total amount of postoperative calcium required. Methods: We enrolled 91 hemodialysis patients undergoing PTX from November 2003 to December 2011. We collected clinical and laboratory data preoperatively, 12 and 48 hours postoperatively, at discharge, and 3 and 6 months postoperatively. Results: In total, 59 patients underwent PTX with autotransplantation (AT), 6 underwent total PTX without AT, 11 underwent subtotal PTX, and 15 underwent limited PTX. Total PTX without AT showed the lowest recurrence rate. At all postoperative time points, the mean levels of serum calcium, phosphorus, and intact parathyroid hormone (iPTH) decreased significantly, compared with preoperative levels; however, alkaline phosphatase (ALP) increased significantly from 48 hours postoperatively to discharge (p < 0.001). On multiple linear regression analysis, the total amount of injected calcium during hospitalization showed a significant correlation with preoperative ALP (p < 0.001), preoperative iPTH (p = 0.037), and Δphosphorus at 48 hours (p < 0.001). We developed an equation for estimating the total calcium requirement after PTX. Conclusions: Preoperative ALP, preoperative iPTH, and Δphosphorus at 48 hours may be significant factors in estimating the postoperative calcium requirement. The formula for postoperative calcium requirement after PTX may help to predict the duration of postoperative hospitalization.
Kyu-shik Jeong,정원일,Jae-yong Chung,Mi-young An,Chae-yong Jung,Gyoung-jae Lee,Jong-soo Kang,Byeong-cheol Kang,Young-heun Jee,Bruce H Williams,Young-oh Kwon,Da-hee Jeong 대한수의학회 2003 Journal of Veterinary Science Vol.4 No.2
Cirrhosis Occurring in a Young Woodchuck (Marmota monax) Due to Vertical Transmission of Woodchuck Hepatitis Virus (WHV)Da-hee Jeong, Won-il Jeong, Jae-yong Chung, Mi-young An, Chae-yong Jung, Gyoung-jae Lee1, Jong-soo Kang1, Byeong-cheol Kang2, Young-heun Jee3, Bruce H Williams4, Young-oh Kwon5 and Kyu-shik Jeong*College of Veterinary Medicine, Kyungpook National University, Daegu 702-701, Korea1Shinwon Scientific Co., LTD, Research Institute, Suwon, Korea2Clinical Research Institute, Seoul National University, Seoul 110-744, Korea3College of Veterinary Medicine, Jeju National University, Jeju 690-756, Korea
국내에서 유행하는 HIV의 전파 경로에 따른 Subtype 분포
이주실,남정구,김성순,강춘,최병선,김옥진,박미선,성봉모,서순덕,전수경,변승옥,신영오,조해월 대한감염학회 2001 감염 Vol.33 No.5
Background : Previous data have been reported that subtype B is prevalent in South Korea, but neither the extent nor the proportion of subtypes could be evaluated. This study was designed to analyze the distribution of HIV-1 subtypes, temporal instructions and transmission dynamics between epidemiological groups. Methods : 1,280 Koreans had been diagnosed as HIV seropositive during the period 1985 to 2000. Among them, 134 individuals were selected for this molecular epidemiological study. 134 DNAs were isolated from uncultured or cultured peripheral blood mononuclear cells. V3-V5 (0.7 kb) fragment of HIV-1 env gene was amplified by nested polymerase chain reaction and was sequenced. Results : HIV-1 isolates from thirty-seven homosexuals were all subtype B (100%). On the other hand, 66 isolates from 94 heterosexuals were subtype B (70%) and 28 were non B subtypes (30% : 13 A, 4 C, 2 D, 8 E , 1 G). Only subtype B strains were isolated from 73 males who were infected with HIV inside Korea while 16 B and 20 non B subtype strains were isolated from 36 males who were HIV infected outside of Korea. However, B and non B strains were isolated half and half from females who were infected inside Korea except one. Conclusion : The HIV-1 subtype B strains are prevalent in Korea from the early HIV infection until present in both homo and heterosexuals. Non B strains have been transmitted from men who were infected outside Korea to their spouses and casual partners. So, we need further study to monitor subtype B and non B HIV transmission in epidemiological groups of Korea, (Korean J Infect Dis 33:311∼318, 2001)
강언종,이배익,조미영,손상규,김광석,김이청,방인철 한국어류학회 2003 韓國魚類學會誌 Vol.15 No.4
대농갱이는 동자개과의 담수어로 고부가가치를 창출 할 수 있는 새로운 담수 양식 대상종으로 주목받고 있으나 현재까지 성장도 등 양식에 대한 기초정보가 밝혀지지 않았으며, 본 연구에서는 인공으로 생산한 자 ? 치어를 사육하면서 암 ? 수의 성장 차이를 비교 ? 조사하였다. 암수의 정확한 성장 차이를 구명하기 위해 본 실험은 자어 초기 조직검사에 의한 조사와 치어기부터 표지법에 의한 조사로 구분하여 실시하였다. 조직학적 판별에 의한 암수간 성장비교 시험 결과 부화 후 50일까지는 수컷과 암컷의 성장차이는 없는 것으로 나타났으나, 부화 80일 후에는 수컷(체장 72.0±6.7㎜, 체중 3.71±6.7g이 암컷(체장 64.3±6.7㎜, 체중 3.71±0.99g)보다 성장이 빠른 것으로 나타나 대농갱이는 부화 후 50일에서 80일 사이에 암 ? 수의 성장차이가 시작되는 것으로 사료되었다. 부화 80일 이후 조사는 표지법이 개체 성장에 미치는 영향을 조사한 후 본 실험에 착수하였으며 표지구는 대조구와 사이에 유으적인 성장의 차이를 보이지 않았다. 개체간 성장차이는 조직학적 판별 결과와 동일한 경향으로 수컷이 암컷보다 성장이 유의적으로 빨랐으며(P<0.05), 시험 종료 후 암컷과 수컷의 크기는 수컷이 평균 체장 17.57㎝, 체중 52.19g으로 암컷의 평균 체장 11.02㎝, 체중 16.26g보다 체장은 약 1.5배, 체중은 약 3배이상 큰 것으로 나타났다(p=0.05). 체중으로 본 성장곡선은 지수성장을 보였으며, 수컷은 Y=0.0024X^(1.738)(R^(2)=0.985), 암컷은 Y=0.0405X^(1.0316)(R^(2)=0.983)의 지수식에 밀접하게 수렵되었고 성장의 차이는 사육기간이 길어질수록 크게 나타났다. The Ussurien bullhead, Leiocassis ussuriensis, of the family Bagridae has recently been targeted for freshwater culture in Korea. In this paper we investigated sexual dimorphism in body size in rearing condition using specimens produced artificially. Tissue sections of gonads were made between 20 and 80 days after hatching to identify sex of the specimens investigated. A difference in body size between sexes was not observed in fry until they were 50 days old. Male fry 80 days old had attained 81.62f7.21 ㎜ total length, and females 72.84±8.62 ㎜ total length. After 80 days the difference in body size was analysed by tagging. Applying the tag by cutting fin tips had no affect on the growth of the fishes (P< 0.05). The growth in body size of males was significantly faster (P< 0.05) than in females, and males attained about 1.5 times more in standard length and about 3 times more in body weight than females at the end of 320 days. The growth curve of body weight was exponential and the body weight was expressed by Y = 0.0024X^(1.738) (R² = 0.985) and Y = 0.0405X^(1.0316)(R² = 0.983) in male and female, respectively, observed at monthly intervals.
고등학교 생물 I 교과서에 수록되어 있는 실험 . 관찰 방법의 적합성 조사
강미애,이천복 慶星大學校 1998 論文集 Vol.19 No.2
This study was performed to point some problems that teachers meet when they teach the experiments with high school biology I textbooks and also to suggest the solution. The results are as follow. Because of the lack of the detailed explanations on the 'method' (for example, the method of making the reagent and its concentration, the magnifying scale of the microscope), it is difficult for the teacher to guide the students to get the exact results. And the lack of diagrams, figures, and pictures with which the results are to be compared makes it difficult to judge the credibility of the result. Furthermore for a number of the experiment, it is not possible to get the results within 50 minutes. It is desirable to replace them with the plausible ones.