인공방광대치술을 받은 환자에서의 대사 산증 발생

김새인,이동현,김광현,류동열,김승정,강덕희,최규복,이신아 이화여자대학교 의과학연구소 2015 EMJ (Ewha medical journal) Vol.38 No.3

Objectives: Metabolic acidosis frequently develops in patients after neobladder reconstruction. However, the incidence of metabolic acidosis in patients with neobladder and the factors associated with the development of metabolic acidosis have not been well elucidated. We aimed to investigate the incidence and the potential predictors for the development of metabolic acidosis after neobladder reconstruction with intestinal segment. Methods: We included patients who underwent neobladder reconstruction using intestinal segment at Ewha Womans University Mokdong Hospital between January 1, 2005 and December 31, 2014. A subgroup of patients according to the time of metabolic acidosis occurrence was further analyzed in order to characterize predictors for metabolic acidosis. Results: Metabolic acidosis was encountered in 79.4% of patients with neobladder during follow up period. When patients were divided into 2 groups according to anion gap (AG), total CO2 (18.9±2.1 mEq/L vs. 20.0±1.3 mEq/L, P=0.001) and chloride (106.6±4.9 mE/L vs. 109.4±3.6 mEq/L, P<0.001) were significant different between groups with AG>12 and AG≤12. Furthermore, when patients were divided into 3 groups; patients with metabolic acidosis at postoperative day (POD) 1; from POD 2 to 14 days; after 14 days, there was significant difference among those subgroups. Conclusion: Our study showed the rate of metabolic acidosis in patients underwent neobladder reconstruction and the difference between patients with metabolic acidosis and those without metabolic acidosis for the first time in Korea. In the future, well designed prospective study will be needed to prevent metabolic acidosis after neobladder reconstruction.

烏貝散이 HCI-aspirin 으로 유발된 십이지장궤양에 미치는 조직학적 영향

구세광,이형식,김종대,한상원,김상찬,이재현 慶山大學校 基礎科學硏究所 1999 基礎科學 Vol.3 No.-

오패산이 HCI-aspirin tm으로 유발된 rat 십이지장궤양에 미치는 조직학적 영향을 관찰하기 위하여, 오패산을 1,3 및 5일 동안 경구투여하고 십이지장의 조직학적 변화를 관찰하였던 바 다음과 같은 결과를 얻었다. 실험 전 기간동안 대조군에서는 십이지장 융모의 위축과 붕괴가 관찰되었으며, 조직학적으로는 점막상피의 변성 및 탈락이 관찰되었고 점막고유층에서는 염증세포의 침윤(infilteration)의 소견이 관찰된 반면 오패산 투여군의 투여 1일에서는 대조군과 유사하게 관찰되었으나, 투여 3일후부터 점막상피의 첨부에서 경미한 카타르성 물질이 관찰된 이외에 정상군과 유사한 소견을 나타내었다. 이상에서 오패산이 십이지장궤양의 치유를 촉진시키는 것으로 관찰되었다. In order to study, the histological effects of Opeaesan on the duodenal ulcer induced by HCI-aspirin tm in rate, experiments were done by oral administration and observed histological profiles of the ulcerative lesions. Ulcerative lesions were unmerously detected in control groups especially in pylorus-duodenal junctions. Histologically, very severe injury to duodenal epithelium wer observed in control groups and these injuries were increased with time intervals. But in the Opaesan-administration groups, no gross lesion of ulcer were demonstrated and histologically minor injury to the mucosal epithelium were observed. Among the Opaesan treatment groups, most slight injuries to duodenal mucosa were detected in 5 days after administration when the histological profiles were similar to that of normal groups. According to these result, it is suggested that Opaesan should be used in treatment of the duodenal ulcer but the funcitonal mechanisms were unknown.

構造用鋼의 熱處理溫度에 따른 衝擊特性에 관한 硏究

吳世旭,安光珠 동아대학교 공과대학 부설 한국자원개발연구소 1983 硏究報告 Vol.7 No.1

It is not enough to determine the impact property by the absorbed impact energy only, so the measurement of impact load has been urged. In impact test the charpy specimen with U type notch were used to determine the impact properties. The specimens were tempered from 100℃ to 800℃ after quenching. Experiments were carried out for such characteristics as impact load, impact value, loading, period, deflection and reduction rate of loading speed. The experimental results are summarized as follows; 1. By comparing with tempering temperature at maximum load between impact and static, tempering temperature of impact specimen is higher than those of the static specimen. 2. Static ratio(γ) between impact and static loading are; γ=1.17~1.60 for spring steel. γ=1.02~1.23 for SM20C steel. 3. The transition tempering temperature in impact value and velocity reduction rate is 300℃.

이차 전기영동을 이용한 프로테오믹 접근을 통한 정맥 압박이 혈장 프로테옴에 미치는 영향

양광익,박선아,오형근,정두신,박형국,성기범,안무영,홍세용 순천향대학교 2006 Journal of Soonchunhyang Medical Science Vol.12 No.1

The human proteomics-based approaches, which examine the expressed proteins of a tissue or cell type, are increasingly being used. Venous occlusion is commonly employed for stimulating tissue-plasminogen activator (t-PA) and plasminogen activator inhibitor-1 (PAI-l) release from venous endothelial cells, and this has been regarded as a parameter of the individual fibrinolytic capacity of plasma. The present work involved a detailed investigation of the plasma proteome and fibrinolytic activity in normal subjects, with the aim of determining whether correlations exist between various parameters of the fibhnolytic system before and after venous occlusion. We analyzed fibhnolytic parameters and plasma proteome before and after 15-min periods of venous occlusion in the forearm in 10 healthy 3rd-decade volunteers. Proteome analysis was performed using two-dimensional gels. The tryptic digests of some proteins were confirmed by MALDI-TOF and the MS-Fit algorithm. The fibrinolytic response as measured by the absolute amount of t-PA after venous occlusion was increased by venous occlusion (5.5 vs 9.6 ng/㎗, p<0.05), as was PAI-l (46.8 vs 56.1 ng/㎗, p<0.05). However, two-dimensional electrophoresis finding was virtually nonspecific and inconsistent after venous occlusion in healthy male subjects. Venous occlusion does not influence plasma proteome in healthy males. Although the fibhnolytic response to venous occlusion is attributed to an increase in free tUPA antigen, this change is not correlated with plasma proteome.

構造用鋼의 破壞靭性과 疲勞强度 및 크랙傳播에 관한 硏究

吳世旭,安光珠 동아대학교 공과대학 부설 한국자원개발연구소 1983 硏究報告 Vol.7 No.1

This Study has been concentrated on fracture toughness and the relations between fatigue limit, crack growth rate, stress intensity factor and crack propagation along the cross section of Structural steel through experiments. The following results are obtained. The fracture toughness and fatigue fimit of laminated steel is higher than SPS6 steel and the crack growth rate of laminated steel is lower than SPS6 steel. The relations beween fatigue crack growth rate dL/dN and stress intensity factor, K are dL/dN=5.0×10^(-10)K^(2.56) for SPS6 dL/dN=4.3×10^(-8) K^(1.76) for laminated steel

본태성 고혈압 환자에서 양측 신혈류의 비교

양광익,양동호,홍세용 대한고혈압학회 1997 대한고혈압학회지 Vol.3 No.1

3.5% NaCl 水溶液의 溫度變化가 SS41鋼의 腐蝕疲勞破壞에 미치는 影響

吳世旭,姜鎬珉,金廣泳,都映旼 東亞大學校 海洋資源硏究所 1988 硏究論文集 Vol.1 No.1

Corrosion fatigue test was performed under rotary bending in 3.5% NaCl aqueous solution having a temperature from 278°K to 318°K in order to investigate the effects of aqueous solution temperature on the corrosion fatigue fracture of SS41 steel. Fatigue life was remarkebly decreased with an increase in aqueous solution temperature. Fatigue life reductions for high stress level were somewhat smaller than those for low stress level, but S-N curves were nearly become parallel lines. Corrosion fatigue crack propagations were accelerated with an increase in aqueous solution temperature. The corrosion fatigue result at aqueous solution temperature of 303°K was showed about the same behaviour as those at 318°K in both S-N curve and da/dN-ΔK curve, which was considered as consequence of limiting diffusion current density(??). As aqueous solution temperature was increased, corrosion was gradually activated in view of fractured surface.

한국재래산양 신생자의 위장관에서 chromogranin A 면역반응세포에 대한 분포 및 출현빈도에 관한 연구

이형식,구세광,이재현 慶山大學校 基礎科學硏究所 1999 基礎科學 Vol.3 No.2

한국재래산양 신생자의 위장관에서 chromogranin(Cg) A 면역반응세포의 각 부위별 출현 분포와 빈도를 면역조직화학적으로 관찰한 결과 Cg A 면역반응세포는 위장관전 부위에서 관찰되었다. 부위별 분포는 유문부(148.0/1㎟)에서 가장 높은 빈도로 출현하였고, 직장(135.0/1㎟), 위저부(106.0/1㎟), 결장(82.0/1㎟), 십이지장(67.0/1㎟), 공장(62.0/1㎟) 및 회장(33.0/1㎟)의 순으로 관찰되었다. 이들 면역반응세포들은 주로 위저부, 유문부, 십이지장, 회장 및 결장부위에서는 점막샘에 다수, 점막 상피에 소수 관찰되었으며, 공장과 결장에서는 점막 전체에 산재되어 관찰있었다. The regional distribution and relative frequency of chromogranin(Cg) A-immunoreactive cells in gastrointestinal tract of the neonate of the Korean native goat were studied with immunohistochemical methods. Cg A-immunoreactive cells were detected throughout the gastrointestinal tract and they were situated to the mucosal gland and mucosal epithelium, and these cells were most predominant in the pylorus(148.0/1㎟), rectum(135.0/1㎟), fundus(106.0/1㎟), colon(82.0/1㎟), duodenum(67.0/1㎟), jejunum(62.0/1㎟), and ileum(33.0/1㎟) were followed in that order.

한국재래산양 태자의 위장관에서 Chromogranin A 면역반응세포에 대한 분포 및 출현빈도에 관한 연구

이형식,구세광,이재현 慶山大學校 基礎科學硏究所 1997 基礎科學 Vol.1 No.2

임신 180일령의 한국재래산양 태자의 위장관에서 chromogranin A(CgA) 면역반응세포의 각 부위별 출현 분포와 빈도를 면역조직화학적으로 관찰하였던 바, CgA 면역반응세포는 위장관 전 부위에서 관찰되었다. 부위별 분포는 직장(104.0/1㎟)에서 가장 높은 빈도로 출현하였고, 회장(66.6/1㎟), 십이지장(62.1/1㎟), 위저부(53.3/1㎟), 유문부(46.0/1㎟), 결장(34.9/1㎟) 및 공장(30.0/1㎟)의 순으로 관찰되었다. 이들 면역반응세포들은 주로 위저부, 유문부, 십이지장, 회장 및 결장부위에서는 점막샘에 다수, 점막 상피에 소수 분포하였으며, 공장과 결장에서는 점막 전체에 산재되어 있었다. The regional distribution and relative frequency of chromogranin A(CgA)-immunoreactive cells in gastrointestinal tract of the fetus(180 days of gestation) of the Korean native goat were studied with immunohistochemical methods. CgA-immunoreactive cells were detected throughout the gastrointestinal tract and they were situated to the mucosal glands and mucosal epithelia. These cells were most predominant in the rectum(104.0/1㎟), and ileum(66.6/1㎟), duodenum (62.1/1㎟), fundus(53.3/1㎟), pylorus(46.0/1㎟), colon(34.9/1㎟), and jejunum(30.0/1㎟) were followed in that order.

Compocasting 법으로 제조된 AS91D/SiC_p composite 의 특성 평가

이경태,김세광,김영직 成均館大學校 科學技術硏究所 1994 論文集 Vol.45 No.2

The properties of SiC particle reinforced metal matrix composites(MMCs) of magnesuim alloy were investigated. MMCs was produced by compocasting method and specimens were fabricated by pressing of slurry. These specimens were evaluated in tensile strength, hardness, wear resistance, oxidation properties. The hardness and tensile strength were increased with SiC_p contents. Up to 5 % addition of SiC_p the wear resistancewas improved. It was deteriorated however above 5 % addition because of adhesive wear. Under isothermal oxidation conditions, oxidation resistance was improved with SiC_p.