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소맥근권(小麥根圈)에서 분리(分離)한 형광성(螢光性) Pseudomonas spp. 에 관(關)한 연구(硏究)
이명철,김용웅,김광식,Lee, Myung-Chol,Kim, Yong-Woong,Kim, Kwang-Sik 한국토양비료학회 1990 한국토양비료학회지 Vol.23 No.2
밀의 근권(根圈)에서 병원성(病原性) 사상균(絲狀菌)에 대해 길항성(拮抗性)이 높은 균주(菌株)를 분리(分離), 동정(同定)하여 연작장해(連作障害)의 피해경감과 생물방제(生物防除)의 기초자료(基礎資料)를 삼고자 그 균이 생성(生成)하는 siderophore에 의한 사상균(絲狀菌)의 생육(生育) 저해력(沮害力)을 조사한 결과(結果)를 요약(要約)하면 다음과 같다. 1. 밀의 근권(根圈)에서 형광성(螢光性) 세균(細菌)을 선별하여 R. solani, F. oxysperum, F. solani에 대한 생육저해(生育沮害)가 큰 (10mm이상) 균주(菌株)를 P. fluerescens Biovar I(Ps-1, Ps-2, Ps-5)과 Biovar II(Ps-3)로 동정(同定)되었다. 2. 선발균주(選拔菌株)가 생성(生成)하는 색소(色素)는 green-yellow 로 410nm에서 최대의 흡광도(吸光度)를 나타내었다. 3. Siderophore는 $Fe^{+3}$의 첨가시 생성량(生成量)은 현저히 감소하였으나 $Fe^{+2}$의 첨가시에는 생성량(生成量)의 감소는 보이지 않았다. 4. 선발균주(選拔菌株)중 Ps-5가 생성(生成)한 색소(色素)는 R. solani의 생육(生育)에 영향을 미치지 않았으며 $FeSO_4$의 처리시 생육(生育)이 증가되었다. 그러나 균주(菌株) Ps-1, Ps-2, Ps-3가 생성(生成)한 색소(色素)는 R. solani, F. oxysperum, F. solani에 대한 생육저해(生育沮害)는 컷으며 $Fe^{+2}$의 첨가시 저해력(沮害力)은 현저히 감소되었다. 5. 암소재배법(暗所栽培法)을 이용한 오이의 연작지토양(連作地土壤)에 오이를 파종하여 접종효과(接種效果)를 본 결과(結果) Ps-2>Ps-1>Ps-5>Ps-3의 순(順)으로 접종효과(接種效果)가 있었으며 Ps-1과 Ps-2는 captan 50ppm의 처리구 보다도 효과(效果)가 더 좋았다. Four active strains, producing siderophore and antagonizing to soil plant disease fungi, were isolated and identified from the wheat rhizosphere to reduce the injurious effects of continuous cropping and study on the biological control. The obtained results were summerized as follow. 1. Four strains of fluorescent Pseudomonas were isolated from the wheat rhizosphere and identified as Pseudomonas fluorescens Biotype A(Ps-1,2,5) and Biotype B(Ps-3) That strains inhibitied growth of R. solani, F.oxysperum and F. solani in vitro 2. Optical density of pigment was maximum at 410nm. 3. Siderophore production by identified strains was decreased with addition of $Fe^{+3}$, although not decreased with addition of $Fe^{+2}$ 4. Pigment of Ps-1, 2 and 3 strain inhibitied growth of R. slani, F. oxysperum and F. solani but pigment of Ps-5 strain did not inhibitie growth of R. solani 5. Effect of inoculation was in order of Ps-2, 1, 5 and 3 strain through the dark culture method, and effect of Ps-1 and Ps-2 was greater than that of treatment of captan 50ppm.
비심장 수술 환자에서 수술 전후 심장사건의 위험도 평가를 위한 심근관류 SPECT 의 유용성
이명철,임석태,이동수,강원준,정준기 대한핵의학회 1999 핵의학 분자영상 Vol.33 No.3
Purpose: We investigated whether myocardial SPECT had additional usefulness to clinical, functional or surgical indices for the preoperative evaluation of cardiac risks in noncardiac surgery. Materials and Methods: 118 patients (M: F=66:52, 62.7±10.5 years) were studied retrospectively. Eighteen underwent vascular surgeries and 100 nonvascular surgeries. Rest T1-201/stress Tc-99m-MIBI SPECT was performed before operation and cardiac events (hard event: cardiac death and myocardial infarction; soft event: ischemic ECG change, congestive heart failure and unstable angina) were surveyed through perioperative periods (14.6±5.6 days). Clinical risk indices, functional capacity, surgery procedures and SPECT findings were tested for their predictive values of perioperative cardiac events. Results: Peri-operative cardiac events occurred in 25 patients (3 hard events and 22 soft events). Clinical risk indices, surgical procedure risks and SPECT findings but functional capacity were predictive of cardiac events. Reveible perfusion decrease was a better predictor than persistent decrease. Multivariate analysis sorted` out surgical procedure risk (p=0.0018) and SPECT findings (p=0.0001) as significant risk factors. SPECT could re-stratify perioperative cardiac risks in patients ranked with surgical procedures. Conclusion: We conclude that myocardial SPECT provides additional predictive value to surgical type risks as well as clinical indexes or functional capacity for the prediction of preoperative cardiac events in noncardiac surgery.
박병윤,이영호,이명철 大韓成形外科學會 1987 Archives of Plastic Surgery Vol.14 No.1
There are two approach methods in reduction of mandibular fracture, one is external approach and the other is intraoral approach. Most surgeon have been used external approach but intraoral approach gives many benefits. The authors performed interosseous fixation of various sites of 10 cases of mandibular fracture through intraoral approach and concluded that advantages of this method are; 1. no external scar 2. complete reduction (alignment) 3. decreased rate of malunion, maloclusion 4. fewer possibility of facial nerve injury 5. shorter operation time.