Induction of heme oxygenase-1 protects against podocyte apoptosis under diabetic conditions

Lee, Sang Choel,Han, Seung Hyeok,Li, Jin Ji,Lee, Sun Ha,Jung, Dong-Sub,Kwak, Seung-Jae,Kim, Seung Hye,Kim, Dong Ki,Yoo, Tae-Hyun,Kim, Jin Hyun,Chang, Se-Ho,Han, Dae Suk,Kang, Shin-Wook International Society of Nephrology 2009 Kidney international Vol.76 No.8

Heme oxygenase-1 (HO-1) is an anti-oxidant enzyme normally upregulated in response to oxidant injury. Here we determined the role of HO-1 in podocyte apoptosis in glomeruli of streptozotocin-treated rats and in immortalized mouse podocytes cultured in media containing normal or high glucose. HO-1 expression, its activity, the ratio of Bax/Bcl-2 protein, and active caspase-3 fragments were all significantly higher in isolated glomeruli of diabetic rats and in high glucose–treated podocytes. These increases were inhibited by zinc protoporphyrin treatment of the rats or by HO-1 siRNA treatment of the podocytes in culture. The number of apoptotic cells was also significantly increased in the glomeruli of diabetic rats and in high glucose–treated podocytes. Inhibition of HO-1 accentuated the increase in apoptotic cells both in vivo and in vitro. Our findings suggest that HO-1 expression protects against podocyte apoptosis under diabetic conditions.

2010 해남, 평창, 원주지역 갈대 등 야초류의 이용실태와 사료가치 평가

서성(Sung Seo),한대덕(Dae Duk Han),장선식(Sun Sik Jang),김원호(Won Ho Kim),정민웅(Min Woong Jung),최진혁(Jin Hyuck Choi),김진숙(Jin Sook Kim),김하영(Ha Young Kim),이종경(Joung Kyong Lee) 한국초지조사료학회 2012 한국초지조사료학회지 Vol.32 No.1

본 연구는 부존 조사료자원 이용으로 수입사료를 줄이고 사료비를 절감하고자 2010년도에 전남 해남(간척지), 강원 평창(강변), 원주(섬강변), 전남 영광(와탄강변) 등 4개 지역에서 갈대와 억새 등 야초 자생지를 탐색하고, 수확·이용실태 조사와 함께 사료가치를 분석하였다. 전남 해남 해남목장 내 갈대(Phragmites communis) 위주의 야초 자생지는 300 ha로 예년에는 2회 곤포작업하여 연간 사일리지로 2,300~2,500톤(ha당 8톤)을 생산하였으나 2010년도는 1회 곤포조제로 사일리지 2,000톤(ha당 7톤)을 생산하였다. 유통가격은 롤 당 53천원으로 ㎏당 110원이었다. 곤포는 전량 자가소비하며, 외부 작업단에 롤 당 26천원의 작업비를 지불하였다. 연간 조수입은 2억 2,260만원이며, 소득은 1억원 수준(345천원/ha)이었다. 초장 150 ㎝의 갈대는 조단백질 8.4%, 상대사료가치 71.9 (건초 5등급), 건물 소화율 60.1%로 사료가치는 볏짚에 비해 약간 나은 것으로 평가되었다. 갈대 사일리지의 사료가치와 유기산 함량은 동일 지역에서 동일한 재료로 사일리지를 조제하더라도 수확시기에 따라 차이가 컸으며(CP 4.7~6.4%, RFV 62.2~78.9, 건물 소화율 41.9~53.9%), 갈대 사일리지의 품질은 수단그라스에 비해 불량하였다. 강원 평창 강변 자생갈대의 사료가치는 초장이 79, 117, 121, 142㎝로 생육이 진행됨에 따라 낮아져, 조단백질은 각각 13.9%에서 7.6%로, 상대사료가치는 90.7 (건초 3등급)에서 76.1 (건초 4등급)로, 건물 소화율은 72.9%에서 54.7%로 감소하였다. 원주 섬강 주변 야초류는 곤포수확 작업에 어려움이 있었으며, 초장 130 cm의 갈대는 조단백질 8.5%, 상대사료가치 82.3 (건초 4등급), 건물 소화율 70.2%로 사료가치는 높았으며, 220㎝의 성숙한 갈대는 조단백질 10.2%, 상대사료가치 65.1 (건초 5등급), 건물 소화율 48.9%로 볏짚 대비 조금 나은 것으로 평가되었다. 전남영광지역에서는 와탄천 주변에 자생하는 갈대를 수거 이용하고자 시도하였으나 경제성이 없어 중단하였다. 이상의 결과를 종합하여볼 때, 갈대, 억새 등 야초류는 현 상태에서 최대한 수거·이용하되, 사료가치를 유지하고 가축 기호성이 양호한 시기에 수확하는 것이 중요하며, 최소한 볏짚과 비슷하거나 그 이상의 사료가치를 기대하기 위해서는 7월 중순 이전(늦어도 7월까지)에 수확·이용하는 것이 권장된다. This study was carried out in 2010 to investigate the utilization and forage quality of native grasses, such as Phragmites communis which might reduce the cost of feeding domestic cattle. The regions surveyed were the Haenam ranch in Haenam, Pyeongchang, Wonju, and Yeonggwang. In Haenam, yearly silage production harvested from 300 ha was 2,000 MT (7 MT/ha). All of those round bale silages were self-consumed in that region, and marketing price was 50,000 55,000 won per roll (110 won/㎏). Phragmites communis of 150 ㎝ in length contained 8.4% crude protein (CP) with relative feed value (RFV) 71.9 and 60.1% in vitro dry matter digestibility (IVDMD), which was somewhat more favorable than forage quality of rice straw. The silage quality of Phragmites communis varied greatly by the time of harvest (CP 4.7 6.4%, RFV 62.2 78.9, and IVDMD 41.9 53.9%), even with the same district and of the same original forage materials. Generally, the quality of Phragmites communis silage of was poorer than that of sorghum * sudangrass hybrid. In Pyeongchang, forage quality of Phragmites communis was decreased from 13.9% to 7.6% in CP, 90.7 to 76.1 in RFV, and 72.9% to 54.7% in IVDMD, as plant was getting mature, from 79 ㎝ to 117 ㎝, 121 ㎝ or to 142 ㎝ in length. In Wonju, the quality values of Phragmites communis of 130 ㎝ in length were 8.5% CP, 82.3 RFV and 70.2% IVDMD, while those of matured grasses of 220 ㎝ in length were lower (10.2% CP, 65.1 RFV and 48.9% IVDMD), but this was a little more favorable than quality of rice straw. In Yeonggwang, feeding Phragmites communis was tried in a Hanwoo feed, but stopped due to low profitability. In conclusion, the overall quality of most native grasses including Phragmites communis in this survey was poor. Therefore, we recommend that Phragmites communis and native grasses should be harvested on June or July to obtain richer forage quality in forage values than rice straw.

유전 알고리즘과 개선된 자율 적응 군집화 알고리즘을 이용한 영상 영역화

하성욱,윤호성,서석배,강대성 東亞大學校 附設 情報通信硏究所 1997 情報通信硏究所論文誌 Vol.5 No.1

This paper proposes the new image segmentation method using AACA(advaneced adaptive clustering algorithm) and GA(genetic algorithm). The solution in the general GA is able to be moving because of stochastic reproduction. To cope with these problems, we proposes GBR(great bast reinsertion) and the technique that resolves the premature convergence problem. We also proposes image segmentation method for optimizing vigilance parameter and cluster value. Finally, We uses the new method that removes the small regions in the segmented results. The experimental results show that the proposed algorithm(SGACA; segmentation using genetic adaptive clustering algorithm) gives better performance than the AACA ones.

수근 주상골 단독 탈구 : 1례 보고 A Case Report

하대호,김상수,송정인 圓光大學校 醫科學硏究所 1999 圓光醫科學 Vol.15 No.1

Isolated dislocation of the carpal scaphoid is extremely rare. Case report of isolated and complete volar dislocation of the carpal scaphoid have been reported rarely. On examination, the wrist was moderately swollen and tender over its volar aspect. Radiographs showed isolated, complete volar dislocation of the scaphoid. It was realigned and stabilized following; open reduction with K-wire fixation. The patient had been got neurolysis due to median nerve compression symptom(carpal tunnel syndrome) after postoperative four weeks. At six weeks, the K-wires were removed and the patient was allowed to range of motion exercise. 20 months after injury, the wrist was asymptomatic and had a range of active motion without instability. There was no roentgenographic evidence of scapholunate dissociation or avascular necrosis.

메틸水銀의 心筋毒性에 대한 苦蔘의 影響

송호준,하대호,유교상,박승택,이강창,서부일 대한본초학회 2002 大韓本草學會誌 Vol.17 No.2

Objectives : To evaluate the toxic effect of methylmercuric chloride(MMC) and the protective effect of Sophorae Radix(SR) in cultured mouse myocardial cells, cytotoxicity was measured by MTT assay Methods : Cultured myocardial cells were incubated for 72 hours in the media containing 5~40 ㎛ concentrations of MMC. And also, the protective effect of SR was determined by sulforhodamine B(SRB) for protein sythesis and radioactive assay for DNA sythesis in these cultures. Results : Cell viability was significantly decreased in a dose-dependent manner after cultured myocardial cells were exposed to 20 ㎛ MMC for 72 hours. In the neuroprotective effect of SR on MMC-induced cytotoxicity, SR blocked the MMC-induced myotoxocity in these cultures. Conclusion : It suggests that MMC is toxic against cultured mouse myocardial cells and SR is effective in blocking the meurotoxicity induced by MMC.

Studies on processing and storage of eel, Anguilla japonica 1.Changes in free amino acids during processing : 제1보. 가공중의 유리아미노산의 변화

송대진,하진환,이응호 제주대학교 해양연구소 1982 해양자원연구소연구보고 Vol.6 No.-

유방의 양성 및 악성질환에서 bcl-2의 표출

황호현,김대중,김의한,양승하 순천향의학연구소 1998 Journal of Soonchunhyang Medical Science Vol.4 No.2

Breast carcinoma is common malignant tumor in korea and many oncogens have been found in tumor cells. bcl-2 prevent apoptosis and located in mitochondria, endoplasmic reticulum, and nuclear membrane. To evaluate the expression of bcl-2 according to histopathologic features and the relation between bcl-2 and prognosis in breast carcinoma, we have performed immunohistochemical staining, using mouse anti-bcl-2, for 27 cases of benign disease and 49 cases of breast carcinoma. The results were as follows; 1) The expression rates were 77.9% in benign disease and 55.1% in breast carcinoma. 2) In benign disease, expression rate of fibroadenoma, atypical ductal hyperplasia, and intraductal papilloma were 85.7%, respectively, and adenosis 50%, tubular adenoma 0%, and lactating adenosis 100%. But there were no significant difference. 3) In breast carcinoma, expression rate of ductal carcinoma in situ was 100%(3/3) and infiltrating carcinoma 52.2%(24/46), but there were no significant difference. 4) Expression rate of bcl-2 according to histologic grade on breast carcinoma was 68.8% of grade Ⅰ, 54.2% of grade Ⅱ, and 33.3% of grade without significant difference. Expression rate of lymph node metastatic cases was 43.8% and non-metastatic cases 66.8% without significant differnece. Above results showed that bcl-2 expression in breast carcinoma may be related to good prognosis of patients. But further continued study should be followed with more cases.

상황버섯(Phellinus linteus)으로부터 Ergosterol의 분리

류하나,유종수,송명종,이대영,김동현,노영덕,김인호,백남인 경희대학교식량자원개발연구소 2007 硏究論文集 Vol.26 No.1

상황버섯을 80% MeOH 용액으로 추출하고, 추출물을 EtOAc, n-BuOH 및 물로 분배, 추출하였다. 이 중 EtOAc 분획을 silica gel 및 octadecylsilica gel(ODS) column chromatography로 정제하여 1종의 sterol 화합물을 분리하였다. 화합물의 화학구조는 NMR, MS 및 IR 등의 스펙트럼 데이터를 해석하여, ergosta-7,22E-diene-3β,5α,6β-triol(cerevisterol, 1)로 동정하였다. 이 화합물은 상황버섯에서 처음 분리 보고 되었다. Phellinus linteus was extracted with 80% aqueous MeOH, and the concentrated extract was partitioned with EtOAc, n-BuOH and H_(2)O. The repeated silica gel and ODS column chromatographies of the EtOAc fraction led to the isolation of one sterol. From the result of spectral data including NMR, MS and IR, the chemical structure of the sterol was determined as ergosta-7,22E-diene-3β,5α,6β-triol (cerevisterol, 1). Compound 1 was isolated from the Phellinus linteus for the first time in this study.

만성 B형 간질환에서 라미부딘 초치료 후의 재발 양상과 재치료 효과

박종호,박능화,신정우,방성조,김대현,주광로,김도하 대한간학회 2003 Clinical and Molecular Hepatology(대한간학회지) Vol.9 No.3

목적: 만성 B형 간염 환자에 라미부딘은 효과적이지만 서양의 보고와 달리 국내에서는 치료 종료 후 재발률이 높은 것으로 알려져 있다. 그러나 라미부딘 치료 종료 후의 재발 양상이나 재발군에서 라미부딘의 재투여에 대한 치료 효과는 알려져 있지 않다. 본 연구에서는 치료 종료 후 재발 양상과 재발군에서 라미부딘 재치료 효과를 알아보고자 하였다. 대상과 방법: 만성 B형 간질환으로 진단받고 라미부딘을 치료받은 환자 중 치료에 반응한 후 투약을 중지한 121명 중에서 재발한 42명(만성 간염 36예, 대상성 간경변 6예)을 대상으로 하였다. 라미부딘을 1일 100 ㎎씩 6개월(평균 16개월, 범위: 6-35개월) 이상 투여하였다. 평균 연령은 39.7세였고 남녀 비는 35:7이었다. 재치료 전 혈청 ALT 평균치는 437 IU/L, AST 평균치는 227 IU/L, HBV DNA 평균치는 519 pg/mL였다. 치료반응군에서는 치료 반응이 있은 뒤 추가로 라미부딘을 투여하여 적어도 2개월 이상 반응이 유지된 후 투약을 중지하고 재발 유무를 추적 관찰하였다. 겨로가: HBeAg이 혈청전환된 192예 중 121예(63%)에서 투여를 중단하였으며 평균 추적 기간은 8.9개월(범위: 1-40개월)이었다. 66명(54.5%)에서 재발하였으며 평균 재발 시기는 5.7개월(범위: 1-33개월)이었다. 50예(75.8%)에서는 HBeAg 양성 만성 간질환으로, 16예(24.2%)는 HBeAg 음성 만성 간질환으로 재발하였다. 누적 재발률은 1개월 후 6%, 3개월 후 27%, 6개월 후 47%, 12개월 후 60%, 18개월 후 64%, 24개월 후 66%이었다. 재발과 관련된 예측 인자로는 연령, 치료 전 정량적 HBeAg치, HBV DNA치가 의미 있는 인자였으며 30세 이하의 25명 중 5명만이 재발하였다. 재발한 66명 중에서 혈청 ALT치가 지속으로 상승된 42예(64%)에서 라미부딘을 재투여 하였다. 31예(73.8%)에서 반응이 있었으며 누적 치료 반응률은 6개월 62%, 9개월 69%, 12개월 72%였다. Breakthrough는 6예(14.3%)에서 일어났으며 전부 HBeAg 양성 만성 간질환 환자였다. 적어도 24개월 이상 치료반응이 유지된 21예에서 투여를 중지하였으며 이 중 11예(52.4%)에서 재발하였다. 재치료한 HBeAg 양성군과 음성군 간에 치료반응률, breakthrough률, 재발률 등도 유의한 차이는 없었다. 라미부딘 재투여의 치료 반응 예측 인자로는 라미부딘 투여기간(p=0.003)이 유의하였으며 breakthrough와 관련된 인자는 없었다. 결론: 라미부딘 초치료 후 재발률은 높았으며 재발 형태는 HBeAg 양성뿐만 아니라 HBeAg 음성 만성 B형 간질환의 형태로도 나타났다. 라미부딘 재치료는 초치료보다는 높은 치료 반응률을 보였으나 breakthrough률과 재발률은 초치료와 비슷하였다. Background/Aims: The post-treatment relapse patterns and efficacy of lamivudine re-treatment for relapsed patients have not been clarified. The aims of this study were to evaluate the relapse patterns after discontinuing therapy and the effects of lamivudine re-treatment for relapsed patients after HBeAg seroconversion. Methods: Therapy was discontinued after HBeAg seroconversion in 121 patients. Sixty-six patients were relapsed and included in this study. The duration of lamivudine re-treatment therapy was from 6-35 (mean:16) months. Post-retreatment monitoring continued for 1-40 (mean:8.9) months. Results: Among the relapsed 66 patients, 50 (75.8%) had HBeAg reappearance while 16 (24.2%) remained HBeAg negative and anti-HBe positive. The cumulative relapse rates at 3, 6, 12 and 24 months were 27%, 47%, 60% and 66% respectively. Forty-two relapsers received lamivudine re-treatment. Among them, 33 were HBeAg positive and 9 were HBeAg negative and anti-HBe positive, Response was achieved in 31 of the 42 patients (73.8%). The cumulative response rates at 6, 9 and 12 months were 62%, 69% and 72%, respectively. Six patients (14.3%) developed viral breakthrough. All patients were HBeAg positive chronic hepatitis B. The duration of lamivudine re-treatment was the only predictable factor for response of lamivudine re-treatment. Therapy was discontinued after response in 21 patients. Eleven patients were relapsed, including 6 who were HBeAg positive and 5 who were HBeAg negative. Predictive factors for post-retreatment relapse were age and the duration of additional lamivudine therapy after response. Conclusions: The response rate of lamivudine re-treatment was significantly higher than in initial lamivudine treatments. The breakthrough and relapse rates, however, were similar in both initial and retreated lamivudine therapy.(Korean J Hepatol 2003;9:188-197)

성인에서 장기간 Furosemide오용과 연관된 신수질 석회화

김윤구,이윤하,이규백,장세호,김대중,오하영,김보현,김미경,조윤숙 대한신장학회 1996 대한신장학회잡지 Vol.15 No.4