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Trypsin과 chymotrypsin이 호산구 화학주성 및 활성화에 미치는 효과
이명구 ( Myung Goo Lee ),김명빈 ( Myung Bin Kim ),김진환 ( Jin Hwan Kim ),윤택중 ( Taek Joong Yun ),최정은 ( Jeong Eun Choi ),김동환 ( Dong Hwan Kim ),모은경 ( Eun Kyung Mo ),박명재 ( Myung Jae Park ),현인규 ( In Gyu Hyun ),정기석 대한결핵 및 호흡기학회 1996 Tuberculosis and Respiratory Diseases Vol.43 No.3
Er:YAG 레이저로 처리한 상아질에 대한단일 단계 접착시스템의 결합
이명구 ( Myung Goo Lee ),조영곤 ( Young Gon Cho ) 조선대학교 치의학연구원 2013 Oral Biology Research (Oral Biol Res) Vol.37 No.1
The purpose of this study was to evaluate the influence of Er:YAG laser irradiation on the microshear bond strength (μSBS) of three single-step adhesive systems to dentin. Materials and Methods: The occlusal dentin surfaces of 30 extracted teeth were exposed. Samples were divided into six groups according to laser irradiation of dentin surface and type of single-step adhesive system (LP group: Adper Prompt L-Pop (3M ESPE Dental Products), LP-L group: Er:YAG laser (KEY Laser 3, KaVo)+Adper Prompt L-Pop, GB group: G-Bond (GC Corporation), GB-L group: Er:YAG laser+G-Bond, AB group: ALL-Bond SE (Bisco Inc.), AB-L group: Er:YAG laser+ALL-Bond SE). The bonded specimens were subjected to μSBS test, and the resin-dentin interfaces were observed under field emission scanning electron microscope. Results: There were no significant differences among the μSBS of LP, GB, and AB groups, whereas the μSBS of the LP-L and AB-L groups were significantly higher than that of the GB-L group (p<0.05). More adhesive failures were seen in the laser-irradiated groups than in the non-irradiated groups. All other groups, except the GB-L group, showed close adaptation at the interface of dentin and composite resin. Conclusion: Use of Er:YAG laser irradiation can reduce the bonding strength of composite resin to dentin depending on the type of single-step adhesive system.
폐렴경과 중 순환 호중구의 Respiratory Burst 활성도 변화
이재명 ( Jae Myung Lee ),이종민 ( Jong Min Lee ),김동규 ( Dong Gyu Kim ),최정은 ( Jeong Eun Choi ),모은경 ( Eun Kyung Mo ),박명재 ( Myung Jae Park ),이명구 ( Myung Goo Lee ),현인규 ( In Gyu Hyun ),정기석 ( Ki Suck Jung ),박찬정 ( 대한결핵 및 호흡기학회 1996 Tuberculosis and Respiratory Diseases Vol.43 No.5
폐렴진단에 있어서 Protected Specimen Brushing 의 역할
이재명(Jae Myung Lee),김동규(Dong Kyu Kim),최정은(Jeong Eun Choi),김동환(Dong Hwan Kim),모은경(Eun Kyung Mo),박명재(Myung Jae Park),이명구(Myung Goo Lee),현인규(In Gyu Hyun),정기석(Ki Suck Jung) 대한내과학회 1997 대한내과학회지 Vol.53 No.2
Objectives: Culture of sputum is apt to be contaminated through oral cavity and proximal airway. Therefore, identification of true etiologic agents by sputum culture is not always reliable. In order to differentiate the pulmonary infection from non-infectious disease and to identify the true etiologic agent of acute pulmonary infection, we used PSB(Protected Specimen Brushing) and evaluated the efficacy of PSB. Methods: In 168 patients with acute febrile illness with pulmonary infiltrations(male 106, female: 61, mean age: 49.5±17.6), we performed PSB via a bronchoscope and compared the results along with blood culture and sputum culture. Protected specimen brush was introduced through biopsy channel of bronchoscope and was rotated within the purulent secretions. Tip of the brush was severed with aseptic technique and was immersed in 1cc of Ringer's lactate solution and vigorously mixed for 1 minute. The specimen was submitted for quantitative culture within 15 minutes and was regarded positive culture if colony forming units were above 10³/ml. Results: Using PSB for the diagnosis of pulmonary infection, sensitivity was 71.1% and specificity was 84.296. PSB was helpful in identifing true etiologic agent among several potentially pathogenic organisms. Using PSB for the diagnosis of UAP (ventilator associated pneumonia), sensitivity was 72.4% and specificity was 100%. Conclusion: Use of PSB can be a helpful method for the diagnosis of pulmonary infection and identification of its etiologic agents.
폐렴의 진단에서 정량적 기관지폐포 세척액 배양의 유용성
한태호(Tae Ho Hahn),장명국(Myoung Kuk Jang),김성균(Seong Gyun Kim),이자영(Ja Young Lee),이재명(Jae Myung Lee),김동규(Dong Kyu Kim),최정은(Jeong Eun Choi),모은경(Eun Kyung Mo),박명재(Myung Jae Park),이명구(Myung Goo Lee),현인규(In Gyu 대한내과학회 1998 대한내과학회지 Vol.54 No.6
Background: The aim of this study is to evaluate the usefulness of quantitative culture of bronchoalveolar lavage (BAL) fluid for the diagnosis of bacterial pneumonia and identification of causative agents. Methods: Study group consisted of 30 epiaodes in 28 patients, enrolled from January 1995 through June 1996. Inclusion criteria were 1) presence of respiratory symptoms such as cough, sputum or dyspnea 2) increased peripheral blood leukocyte count (≥11,000/mm³) 3) Fever (≥38.3ºC) 4) purulent sputum 5) new or progressive infiltrate on chest radiography. For the diagnosis of pneumonia and its causative agents, sputum smear and culture, blood culture and BAL fluid studies were performed. BAL fluid studies included differential count of white blood cell, BAL fluid smear and culture, detection of elastin fibers and presence of intracellular organisms (ICO). Quantitative culture of BAL fluid was considered positive if colony forming units was more than 1.0×10(4)/ml. Positive criteria for ICO was presence of microorganism in more than five per 100 of phagocytes, Result: Recruited were 22 males and 6 females. The mean age was 57.5±13.5 years (range 25-84), Of 30 episodes underwent BAL fluid studies, 19 cases were diagnosed to be bacterial pneumonia, S. aureus (7 cases) was the most common causative agent and was followed by P. aeruginosa (4), E. cloacae (2), A baumanii (1), H. influenzae (1) and a-hemolytic Streptococcus (1). Sensitivity of quantitative culture of BAL fluid for the diagnosis of bacterial pneumonia was 68.4% and its specificity was 63.6%. Elastin fibers were detected in 5 cases (31%) and ICO over 5% in 3 cases (15.7%). When criteria of quantitative culture of BAL fluid, detection of ICO and elastin fibers were applied together, diagnostic rate of pneumonia was 84.2% (16/19). Conclusion: Quantitative culture of BAL fluid was sensive and specific compared to sputum and b1ood culture for the diagnosis of bacterial pneumonia, It was suggested that detection of ICO and elastic fibers in BAL fluid could raise the diagnostic rate of bacterial pneumonia.