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구상일,변윤섭,황태규,이순용 인제대학교 1996 仁濟醫學 Vol.17 No.2
MELAS 증후군은 사립체뇌근병증의 하나로서 주로 중추 신경계와 골격근을 침범하여 편측 마비, 편측 감각 소실, 편측 시야 결손, 구어 장애, 인지 능력 저하 등의 반복되는 뇌졸중 증상, 저신장, 두통, 근무력감, 청각 장애, 내당능 저하, 신경병증들의 소견을 보이는 질환이다. 저자들은 보행 장애를 주소로 입원한 10세 남아에서 근생검을 시행하여 MELAS 증후군으로 진단된 1례를 치험하였기에 문헌고찰과 함께 보고한다. Mitochondrial diseases include three distinct syndrome: mitochondrial myopathy, encephalopathy, lactic acidosis and stroke-like episodes(MELAS) : myoclonus epilepsyassociated ragged-red fibers( MERRF) : and chronic progressive external ophthalmoplegia(CPEO). MELAS syndrome is rare but clinicopathologically distinctive mitochondrial disorder. We have recenttly seen a 10-year-old male patient who showed limb weakness, lactic academia and recurrent strokes with subsequent hemiparesis. We now report a case of MELAS syndrome confirmed by demonstrating abnormal mitochondria in muscle biopsy.
Cryptotanshinone for Treating Acne Vulgaris
( Nae-gyu Kang ),( Ji-eun Park ),( Young-sook Song ),( Jung-ah Kim ),( Mun-eok Park ),( Yong-hwa Lee ),( Jong-tae Lee ),( Wan-goo Cho ),( Seh-hoon Kang ) 대한화장품학회 2002 대한화장품학회지 Vol.28 No.1
Tests of stability and toxicity, and clinical evaluation of anti-acne activity suggest that cryptotanshinone, a constituent of the roots of Salvia miltiorrhiza Bunge, is an effective active ingredient for acne vulgaris treatments. Acne vulgaris, called acne or pimples, is the most common disease of the pilosebaceous follicle unit of the skin. It affects nearly 80% of people between the ages of 11 and 30. Approximately 30% of teenagers have acne of sufficient severity to require medical treatment. Acne is a follicular disorder of the skin. It occurs in specialized pilosebaceous units on the face and body. Acne develops when these specialized follicles undergo pathologic alterations that result in the formation of non-inflammatory lesions (comedones) and inflammatory lesions (papules, pustules and nodules). An abnormality of keratinizing epithelium of these follicles, thought to be due to the action of sebum synthesized and secreted by the androgen-sensitive sebaceous glands, leads to inflammation induced by the follicular bacterium Propionibacterium acnes. Therapy involves treatments that modify these pathogenic factors and includes drugs with antikeratinizing, antibacterial and antiseborrheic actions. Acne vulgaris is a very frequent disease, seen primarily in adolescents, involving the sebaceous follicles. Acne vulgaris is characterized by a great variety of clinical inflammatory and non-inflammatory lesions: comedones, papules, pustules, nodules, cysts and scars. Acne vulgaris is a multi-factorial disease. Although its pathogenicity is unclear, extensive studies have shown that hyperseborrhea, superinfection by P. acnes and endocrinologic androgenic changes play a role in the development of acne vulgaris.
Shape Memory Effect and Superelasticity of an Equiatomic Ti-Ni Alloy with Surface Sulfide Layers
Nam, Tae Hyun,Hur, Shin Goo,Lee, Jae Hwa,Cho, Gyu Bong Trans Tech Publications, Ltd. 2006 Materials science forum Vol.510 No.-
<P>Shape memory characteristics and superelasticity of an equiatomic Ti-Ni alloy with surface sulfide layers were investigated by means of thermal cycling tests under constant load, tensile tests, and scanning electron microscopy. Martensitic transformation start temperature (Ms) increased by sulfidation, which is ascribed to a compressive stress imposed by surface sulfide layers. Surface sulfide layers were found to make transformation elongation be small when their thickness was less than 5 ㎛. This is ascribed to the fact that the surface sulfide layers were not detached from substrates and constrained martensitic transformation. When thickness of the surface sulfide layers was 35 ㎛, transformation elongation was not affected by them because they were detached during transformation. Superelastic recovery decreased by the sulfide layers when their thickness was about 5 ㎛, while it did not change when the thickness was about 35 ㎛.</P>
알루미늄 거푸집을 이용한 모의구조체의 표면 마감성에 관한 연구
김태청 ( Tae Cheong Kim ),이동규 ( Dong Gyu Lee ),백대현 ( Dae Hyun Baek ),한민철 ( Min Cheol Han ),한천구 ( Cheon Goo Han ) 한국건축시공학회 2008 한국건축시공학회 학술발표대회 논문집 Vol.8 No.1
This study analyzed the effect of increasing the number of times using aluminum form to the surface quality of concrete through small sized test, and the result was summarized as following. At the early stage, there was no remarkable change between aluminum and coated plywood form, and the surface quality of concrete both forms slightly declined corresponding with increasing the number of times using.As void on the surface corresponding to the number of times, the voids ranged 0.1∼1mm were increased corresponding to increasing the number of times using forms, and the other range voids were also increased according to increasing the number of times using forms. It was confirmed that the surface of concrete was damaged gradually. For comparison with aluminum and coated plywood form though this experimental results, there might be no difference, if release agent was used properly.
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.