섬유소 분해효소 생성을 위한 Trichoderma viride 조절 변이주의 개발

송은경,허태린,이세영 ( Eun Kyong Song,Tae Lin Huh,Se Yong Lee ) 생화학분자생물학회 1982 BMB Reports Vol.15 No.3

An attempt were made to isolate regulatory mutants of Trichoderma viride using a plating technique devised to screen constitutive cellulase mutants and high cellulase producing mutants. With U.V. mutagenesis, 70 mutants which exhibited high cellulase activity in the presence of 2% glucose were initially isolated from Trichoderma viride QM9414, a high celluase producing U.S. Army Natick Laboratory Strain. Upon continuous culture in the liquid medium, however, most of these mutants. were reverted to the glucose sensitive strain. One of the mutant, L40, was stable even after long period of culture in the liquid medium and still showed a high cellulase activity and relative insensitivity to glucose for cellulases production. The characteristics of the mutant L40 and cellulases produced by this mutant were as. follows: 1. When cellulases were induced by Avicel, a crystalline cellulose, the mutant L40 produced approximately 47 % higher cotton activity than the parental strain QM 9414. The induction time for the cotton activity was also shortened appreciably in. the mutant. CMC activity and β-glucosidase activity, however, were not changed in their total activity or induction time. 2. The cellulases induction by Avicel were less sensitive to glucose in mutant L40 than in the parental strain QM9414. 3. When cellulases were induced by carboxy methyl cellulose, a noncrystalline cellulose, there were no appreciable changes in cellulases activities, nor in induction times. 4. When cellulases were induced by cellobiose, the mutant L40 produced approximately 40 % higher cotton activity than the parental QM9414 and the induction time was shortened appreciably in the mutant. The CMC activity was also changed in the mutant but no change in β-glucosidase activity was observed. 5. The enzymic properties of cellulases and the growth characteristics of mutant L40 and the parental QM9414 were the same.

사례보고-미국의 학교도서관 미디어의 달

송은경,Song, Eun-Gyeong 한국도서관협회 2006 圖協會報 Vol.47 No.4

현재 미국 데이비슨 초등학교에서 도서미디어 교사로 활동하고 있는 송은경씨가 4월 학교도서관 미디어의 달과 관련해 미국의 도서미디어 교사의 자격과 역할, 학교도서관 미디어의 달 활용방법, 학교도서관 미디어의 달의 각종 행사를 소개해 주었다. 우리나라 학교도서관 활성화에 좋은 참고가 되기를 바란다.

미국 내 사서교사의 전망과 사명

송은경,Song Eun-Gyeong 한국도서관협회 2003 圖協會報 Vol.44 No.3

소아 침습성 폐구균 감염증의 역학적 특성과 임상 양상

송은경,이준호,김남희,이진아,김동호,박기원,최은화,이환종,Song, Eun-Kyung,Lee, Jun-Ho,Kim, Nam-Hee,Lee, Jin-A,Kim, Dong-Ho,Park, Ki-Won,Choi, Eun-Hwa,Lee, Hoan-Jong 대한소아감염학회 2005 Pediatric Infection and Vaccine Vol.12 No.2

Purpose : To characterize the epidemiology and clinical features of invasive pneumococcal infections in Korean children. Methods : One hundred ninety four cases of invasive pneumococcal infections diagnosed at the Seoul National University Children's Hospital from October 1985 to December 2003 were analysed retrospectively. All isolates were screened for resistance to penicillin by oxacillin disc diffusion test. Serotypes were determined for 125 isolates. Results : The types of infection were bacteremia without focus 84/194(43%), meningitis 36/194(19%), pneumonia with bacteremia 36/194(19%), peritonitis 24/194(12%), other focal infections 3/194(2%). Fifty seven percent(110/194) of the episodes developed in the immunocompromised and 20%(37/194) were nosocomially acquired. The patients younger than 2 years of age was 60% in the immunocompetent patients and 25% in the immunocompromised patients. The overall case fatality rate was 7%. All the isolates by 1988 were susceptible to penicillin screened by oxacillin disk. Penicillin resistance was first detected in 1989(20%), and then increased rapidly; 89% in 1995, 69% in 1996, and 80~100% thereafter. The seven most frequently isolated serotypes were 23F, 19F, 14, 6B, 6A, 9V and 19A, which accounted for 70% of total isolates. Conclusion : S. pneumoniaeis an important cause of morbidity and mortality in children. Invasive infections caused by S. pneumoniae most often occurred in infants and young children, while they are frequent in older immunocompromised children as well. This is the largest case series on invasive pneumococcal infections in Korean children.

섬유소 분해효소 생성을 위한 Trichoderma viride 조절 변이주의 개발

송은경,허태린,이세영,Song, Eun-Kyong,Huh, Tae-Lin,Lee, Se-Yong 생화학분자생물학회 1982 한국생화학회지 Vol.15 No.3

구성변이주와 높은 섬유소 분해력을 갖는 돌연변이주를 검색하는 데 이용되는 평판배양법을 써서 Trichoderma νiride의 조절 변이주를 선별하고자 하였다. U.V.를 돌연변이 유발원으로 사용하여, U.S. Army Natick Laboratory균주로써 높은 섬유소 분해력을 갖고 있는 Trichoderma νiride QM9414로부터 2%의 glucose존재하에서도 높은 섬유소 분해력을 나타내는 돌연변이 균주 70개를 선별해서 액침배양한 결과 이들 중 대부분이 glucose에 의해 repression을 받는 것으로 나타났으나 돌연변이 균주의 하나인 L40은 오랜동안의 액침 배양 후에도 높은 섬유소분해력을 보여주었으며, 섬유소 분해효소 생성에 있어서 glucose에 의해 비교적 repession을 덜 받는 것으로 나타났다. 변이주 L40과 변이주 L40에 의해 생성된 섬유소 분해효소의 특성은 다음과 같다. 1. 결정형 섬유소인 Avicel을 유도기질로 사용하여 섬유소 분해효소를 유도하였을 때 결정형 섬유소 분해력인 cotton activity가 약 47 % 증가하였으며 효소 유도시간도 모균주인 QM9414보다 상당히 단축되었다. 비결정형 섬유소 분해력인 CMC activity와 cellobiose를 glucose로 분해하는 ${\beta}$-glucosidase activity에는 큰 변화가 없었다. 2. Avicel을 유도기질로 사용하여 섬유소 분해효소를 유도하였을 경우 돌연변이 균주인 L40이 모균인 QM9414보다 glucose에 의해 repression을 덜 받았다. 3. 비결정 섬유소인 carboxymethyl cellulose로 섬유소 분해효소를 유도했을 때는 섬유소 분해효소의 활성이나 시간이 모균주인 QM9414와 거의 비슷했다. 4. Cellobiose로 섬유소 분해효소를 유도했을 때 돌연변이주 L40의 결정형 섬유소분해력이 모균주 QM9414보다 약 40%증가하였고 효소 유도시간도 약간 단축되었으며 비결정형 섬유소 분해력인 CMC activity도 약간 증가하였으나 유도시간에는 변화가 없었고 ${\beta}$-glucosidase activity는 그 역가에 있어서나 유도시간에 있어서 별다른 변화가 없었다. 5. 변이주인 L40이 모균인 QM9414에 있어서 섬유소 분해효소의 효소적 특성과 성장상의 특정의 차이점은 없었다. An attempt were made to isolate regulatory mutants of Trichoderma viride using a plating technique devised to screen constitutive cellulase mutants and high cellulase producing mutants. With U.V. mutagenesis, 70 mutants which exhibited high cellulase activity in the presence of 2% glucose were initially isolated from Trichoderma viride QM9414, a high celluase producing U.S. Army Natick Laboratory Strain. Upon continuous culture in the liquid medium, however, most of these mutants. were reverted to the glucose sensitive strain. One of the mutant, L40, was stable even after long period of culture in the liquid medium and still showed a high cellulase activity and relative insensitivity to glucose for cellulases production. The characteristics of the mutant L40 and cellulases produced by this mutant were as. follows: 1. When cellulases were induced by Avicel, a crystalline cellulose, the mutant L40 produced approximately 47 % higher cotton activity than the parental strain QM 9414. The induction time for the cotton activity was also shortened appreciably in. the mutant. CMC activity and ${\beta}$-glucosidase activity, however, were not changed in their total activity or induction time. 2. The cellulases induction by Avicel were less sensitive to glucose in mutant L40 than in the parental strain QM9414. 3. When cellulases were induced by carboxy methyl cellulose, a noncrystalline cellulose, there were no appreciable changes in cellulases activities, nor in induction times. 4. When cellulases were induced by cellobiose, the mutant L40 produced approximately 40 % higher cotton activity than the parental QM9414 and the induction time was shortened appreciably in the mutant. The CMC activity was also changed in the mutant but no change in ${\beta}$-glucosidase activity was observed. 5. The enzymic properties of cellulases and the growth characteristics of mutant L40 and the parental QM9414 were the same.

임신성 고혈압 환자에서 1 회 순간 뇨에서의 단백 / creatinine 비

송은경,송은경(Kyung Eun Song),이훈재(Hun Jae Lee),지용일(Yong II Ji),황성욱(Seong Ook Hwang),고승권(Seung Kwon Koh),조숙(Sook Cho),임영구(Young Koo Lim),임문환(Mun Hwan Lim),김종화(Jong Hwa Kim),이우영(Woo Young Lee) 대한산부인과학회 2000 Obstetrics & Gynecology Science Vol.43 No.4

Objectives : The purpose of this study was to evaluate the clinical usefulness of the protein/creatinine ratio of a spot urine specimen for early detection of proteinuria in the pregnancy induced hypertension and to suggest optimum cut-off value of that. Study design : A spot urine specimen and 24 hour urine collection for the proteinuria were ordered for 36 women admitted to obstetric unit for pregnancy induced hypertension and ROC curve analysis was performed to evaluate the usefulness of the protein/creatinine ratio of a spot urine specimen and to suggest optimum cut-off value. Result : The protein/creatinine ratio of spot urine positively correlated well with 24 hour urine proteinuria. (r=0.4322, p=0.0085) and the optimum cut-off value of the protein/creatinine ratio of a spot urine specimen to maximize the diagnostic accuracy was 5.0(Youden's index=0.66). Conclusion : We conclude that the protein / creatinine raio of a spot urine specimen may be a simple and inexpensive method for evaluation of proteinuria in the pregnancy induced hypertension when frequent determinations are necessary. This should improve clinical care, especially when managing hypertensive pregnant women as outpatients.

섬 전체가 공원인 캐나다의 프린스 에드워드 아일랜드((Prriince Edwarrd IIslland))와 그린게이블스((Grreen Gablles))를 방문하고…

송은경,Song, Eun-Gyeong 한국도서관협회 2008 圖協會報 Vol.49 No.1

전화모니터링이 심부전 환자의 증상경험과 자기관리 이행정도에 미치는 효과

송은경(Song Eun-Kyeung) 한국성인간호학회 2005 성인간호학회지 Vol.17 No.1

Streptomyces cattleya 의 Protoplast 형성 및 재생에 관한 연구

송은경(Eun Kyung Song),박영훈(Young Hoom Park) 한국미생물생명공학회 1987 한국미생물·생명공학회지 Vol.15 No.1

지역사회 거주 독거 여성노인의 체질량 지수, 지각된 건강상태가 우울에 미치는 영향

송은경 ( Eun Kyeung Song ),손연정 ( Youn Jung Son ) 한국정신간호학회 2011 정신간호학회지 Vol.20 No.4

Purpose: This study was done to identify the prevalence of depression and determine the relationship of body mass index and perceived health status to depression for elderly women who live alone in the community. Methods: A total of 175 adults aged over 60 participated in this cross-sectional descriptive study. Perceived heath status was measured using a self-report one-item questionnaire. Body mass index was calculated as weight in kilograms divided by the square of height in meters. Depression was assessed using the korean short version of the geriatric depression scale. Hierarchical linear regression was used to identify associations between variables. Results: Approximately 61.7%of elderly women who lived alone were depressed. The mean score for depression was 7.4(SD 3.39). Hierarchical linear regression showed body mass index(β=.25, p<.001) and perceived health status(β=-.26, p<.001) were independently associated with depression adjusting for general characteristics. These two predictors accounted for 12% of the variance in depression, Conclusion: These results suggest that obesity and perceived health status are risk factors for depression in elderly women living alone. Therefore, these factors should be considered when developing intervention program for elderly women with depression.