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Expression of Cox-2 in lung cancer
Lim, Sung Jig,Kim, Jung Yeon 인제대학교 백병원 2002 仁濟醫學 Vol.23 No.3
Cox-2는 대장, 췌장, 폐 그리고 두경부의 종양에서 과발현되는 것으로 알려져 있으며, 또한 전이와 국소 침윤과도 관계 있는 것으로 알려져 있다. 저자들은 86 명의 비소세포성 폐암 환자를 대상으로 면역화학적 염색을 이용하여 Cox-2 단백질의 발현을 살펴보았다. 86명의 환자 중에서 59명(68.6%)에서 Cox-2의 발현을 보였다. Cox-2 발현은 성별, 진단명, 분화, 임파절 전이, 흉막 침범, 임파선 또는 혈관 색전등과 같은 임상병리학적인 요소들과는 의미있는 관계가 없었다. 단지 선암에서 진행된 병기(stage)에 따라 Cox-2 발현이 의미있게 증가하는 것으로 나타났다. Cox-2 과발현은 누적 생존율의 감소와 의미있는 관계를 보였으며, 특히 선암에서 뚜렷하였다. Cox-2 의 발현은 비소세포성 폐암, 특히 선암에서, 발생과 예후에 중요한 역할을 하는 것으로 생각된다.
증례 : 두 종류의 항체를 보유한 자가면역성 저혈당 1예
전성완 ( Sung Wan Chun ),이병완 ( Byung Wan Lee ),강은석 ( Eun Seok Kang ),차봉수 ( Bong Soo Cha ),이은직 ( Eun Jig Lee ),임승길 ( Sung Kil Lim ),이현철 ( Hyun Chul Lee ) 대한당뇨병학회 2009 임상당뇨병 Vol.10 No.2
자가항체로 인한 고인슐린성 저혈당증을 특징으로 하는 자가면역 저혈당은 인슐린 자가면역 증후군과 B형 인슐린저항성으로 나뉘며, 서로 다른 임상적 특성을 보인다. 저자들은 glucocorticoid 치료에 반응하지 않는 자가면역성 저혈당증에 대해 두 가지 종류의 인슐린 항체가 함께 존재함을 확인하고 cyclophosphamide 충격요법으로 저혈당이 호전된 73세 여자 환자 증례를 경험하였기에 문헌고찰과 함께 보고하는 바이다. Autoimmune hypoglycemia is rare kind of autoimmune disease caused by either anti-insulin antibodies (insulin autoimmune syndrome, IAS) or anti-insulin receptor antibodies (type B insulin resistance, type-B IR). We experienced an extremely rare case of the IAS accompanied by type-B IR. A 73-year-old woman presented with recurrent severe hypoglycemic symptoms at dawn for one month was admitted to the Severance hospital. She had several medical histories including 30 years of hypertension, 15 years of type 2 diabetes, and 4 years of coronary artery disease before admission. She had never received an insulin injection. Hypoglycemia was diagnosed at 10 hours in the 72-hour fasting test with glucose, insulin, and C-peptide levels of 42 mg/dL, 280.31 μU/mL, and 7.70 ng/mL, respectively. The insulin autoantibody titer was 130 μU/mL and quantitative assay for insulin receptor antibody was positive. Insulinoma was ruled out by imaging techniques and calcium stimulation test. She has no evidence of other diseases associated with altered immunity. Despite of treatment with prednisolone, symptomatic hypoglycemic events persisted at fasting state. Early induction of 300 mg cyclophosphamide therapy resulted in remission of hypoglycemia accompanied by suppressed antibody titer. The changes in autoantibodies might result in alleviation of the symptoms of hypoglycemia and improvement in insulin and C-peptide levels. (Korean Clinical Diabetes J 10:123-128, 2009)
윤상호(Yoon Sang-Ho),무하마드 아야즈(Muhammad Ayaz),김현직(Kim Hyun Jig),이정태(Lee Jung-Tae),홍민영(Hong Min-Young),임은아(Lim Eun-A),임원빈(Lim Won-Bin),라팟오스만(Rafat Hamood Othman Saeed),조상(Zhao Xiang),윤달환(Yoon Dal-Hwan),이철호 대한전자공학회 2019 대한전자공학회 학술대회 Vol.2019 No.11
By developing the method of vacuum infusion construction on based on the boat manufacturing convergence system, which can be obtained for the safety and quality advancement of the boat. Especially, the precise mixing rate of resinoid and curingagent to inject in an inner ship and deck at short time is very important, which are the best fundamental conditions to decide the stronger boat in the water. So, in this paper, we propose the method of the vacuum infusion construction that applicable for the optimal condition to make a strengthen boat bottom by several components. This one can solve the post deformability of the strengthen structure and can control the precise mixing rate of resinoid and curingagent to the resinoid fluidity and flowing rate per time. Under these condition,
이은직(Eun Jig Lee),이현철(Hyun Chul Lee),안광진(Kwang Jin Ahn),임세중(Se Joong Rim),정윤석(Yoon Sok Jung),이관우(Kwan Woo Lee),임승길(Sung Kil Lim),김경래(Kyung Rae Kim),허갑범(Kap Bum Huh),양우익(Woo Ik Yang),박찬일(Chan Il Park),최 대한내과학회 1991 대한내과학회지 Vol.41 No.6
This retrospective study concerns 73 patients with nonfunctioning pituitary adenoma who were operated on during an 9-year period from 1981 to 1989. Among them, 7 men showed positive immunocytochemistry for FSH and negative for other pituitary hormones. Six of them had elevated serum FSH levels, and LH levels were normal. Testosterone levels were low in six patients tested. Their major symptoms were visual impairment, headache, and impotence, which had developed from two months to 2 years before sugery. Primary hypogonadism could be eliminated on clinical grounds (recent onset of hypogonadism, previous fertility, and posttreatment-improvement). Transsphenoidal adenomectomies were performed in all patients, and radiation-therapies were paralleled in 6 of them. Clinical recovery occurred in all patients. One patient who did not received radiation therapy showed regrowth of tumor mass after 18 months. In remaining 6 patients, we haven't found any evidence of tumor recurrence during follow-up period from 10 months to 6.3 years. We conclude that these 7 men had primary gonadotrope adenoma of the pituitary, and present them with a literature review.
면역세포화학 염색법과 전자 현미경검사를 통한 뇌하수체 선종의 특징
이은직(Eun Jig Lee),이현철(Hyun Chul Lee),양우익(Woo Ik Yang),김경래(Kyung Rai Kim),김현만(Hyun Man Kim),안광진(Kwang Jin Ahn),정윤석(Yoon Sok Chung),임승길(Sung Kil Lim),김태승(Tae Seung Kim),박찬일(Chan Il Park),최인준(In Joon choi 대한내과학회 1992 대한내과학회지 Vol.43 No.2
Background: The development of immunocytochemistry and the application of electron microscopy improved the knowledge of the pathology and classification of the pitutiary adenomas. We investigated the characteristics of the pituitary adenomas examined by the immunocytochemistry and electron microscopy. Methods: 44 patients with the pituitary adenomas were investigated, using immunocytochemical techniques in paraffin-embedded tissue, and electron microscopy in fresh tissue. Results: The mean age was 38±13 years, and the ratio of male to female was 1: 2.4 and 18 were prolactinomas, 8 acromegalies, 3 acromegalies with hyperprolactinemia, 3 Cushing`s diaseases, 3 FSH secreting adenomas, 1 TSH secreting adenomas, and 6 nonfunctioning adenomas among 44 patients. The agreement between serum prolactin and prolactin immunocytochemistry was 77.3% if the serum prolaetin level to predict lactotrope adenoma was above 50ng/ml; however, the agreement was 93,2% if the serum prolatin level above 100ng/ml. The serum levels of prolactin and growth hormone in sparsely granulated lactotrope and somatotrope adenomas were 1149.6, 109.5ng/ml, respectively, which were higher than those (129.6, 35.9ng/ml) of densely granulated ones. Immunocytochemical and electron microscopic analysis revealed that thirteen were lactotrope adenomas (12 sparsely granulated, and 1 densely granulated), 9 somatotrope adenomas (6 sparsely granulated and 3 densely granulated), 6 gonadotrope, 4 corticotrope (3 symtomatic and 1 silent), 1 mixed somatotrope and lactotrope, 1 mammosomatotrope, 1 thyrotrope, and 9 null cell (6 nononcocytic, and 3 oncocytic) adenomas. Conclusion: The immunocytochemistry, permitting the visualization of intracellular hormones in the tissue of the pituitary adenoma, made exact histologic diagnosis. So, we have known whether the cause of hyperprolactinemia was lactotrope adenoma or functional hyperprolactinemia due to PIF inhibiton. And it was also possible to diagnose silent corticotrope adenoma and gonadotrope adenoma which had no apparent clinical manifestation. Electron microscopic examination of the pituitary adenoma diagnosed by immunocytchemistry showed ultrastructrural characteristics of the adenoma cells containing each hormones, Accordingly, we could subclassify the pituitary adenoma. However, the identification of the adenomas with somewhat similar ultrastrutural features such as null cell, gonadotrope, and thyrotrope adenoma, may be facilitated by immunocytochemistry. Accordingly, both immunocytochemistry and electron microscopy are necessary for the identification and characterization of the pituitary adenomas.
윤영직(Young Jig Yoon),허준(Joon Heo),홍충선(Choong Seon Hong),주성호(Sung Ho Ju),임용훈(Yong Hun Lim) 한국정보과학회 2007 한국정보과학회 학술발표논문집 Vol.34 No.2D
전력선을 이용한 통신 기술(Power Line Communication, PLC)은 현재 국내외에서 큰 관심을 받는 연구분야로 국내에서도 이에 대한 연구와 개발이 활발히 진행되고 있다. 이 기술은 전력선을 이용하여 음성 · 데이터 · 인터넷 등을 고속으로 이용할 수 있는 서비스를 제공하며 나아가 가정의 모든 가정기기들을 연결하는 홈네트워크를 구성할 수도 있다. 하지만 전력선 통신 기술에는 보안상 많은 문제가 존재한다. 그 이유는 전력선 통신 네트워크가 전력선과 IP망을 둘 다 사용하는 혼합형 네트워크로 구성되어 있기 때문이다. 이로 인해 기존 IP망에서 사용하던 보안 기술들을 그대로 전력선 통신 네트워크에 적용하기에는 많은 어려움이 따르며 새로운 기술을 개발하고 그것을 기존 인프라에 적용하는 것 또한 많은 어려움이 따른다. 이에 본 논문에서는 기존 IP망에서 사용하던 공개키와 대칭키 방식을 이용하여 서로 다른 네트워크로 구성되어 있는 전력선 통신 네트워크의 보안을 위한 혼합형 보안구조를 제안한다.
Yang, You-Jung,Lim, Sung-Jig,Song, Jeong-Yoon The Korea Society of Nuclear Medicine 2010 핵의학 분자영상 Vol.44 No.1
Purpose To evaluate the potential of Tc-99m diphosphonate as a tracer for sentinel lymph node biopsy in breast cancer. Methods Lymphoscintigraphs of 35 patients ($50.9{\pm}10.2$ years) with breast cancer were acquired after administering a subareolar intradermal injection of Tc-99m diphosphonate 18 h before surgery. Static images were taken within 15 min (early phase) and 15 h after injection (delayed phase). The lymphoscintigraphic identification rate was defined as the percentage of subjects studied with visible foci at axillae. Sentinel lymph node biopsies were performed using a gamma probe and by blue dye injection. Any node that was radioactive or stained with blue dye was labeled as a sentinel lymph node. Lymph nodes without radioactivity or blue dye staining were defined as nonsentinel lymph nodes. The intraoperative identification rate was defined as the percentage of patients with a radioactive sentinel lymph node. Percentages of lymphoid cells expressing S-100, CD83, and CD1a were compared. Results The lymphoscintigraphic identification rate was 94.3% (33/35) during the early phase and 96.9% (31/32) during the delayed phase, whereas the intraoperative identification rate was 94.3% (33/35). The mean percentages of lymphoid cells that stained positively for S-100 or CD83 were lower in sentinel lymph nodes than in nonsentinel lymph nodes (1.5% vs. 9.0% for S-100, and 4.5% vs. 9.3% for CD83, respectively, p=0.0286). The mean percentages of lymphoid cells in sentinel lymph nodes and non- sentinel lymph nodes expressing CD1a were 3.3% and 7.0%, respectively (p=ns). Conclusions Tc-99m diphosphonate can reliably detect regional lymph nodes in breast cancer.
임재규(Jae Kyoo Lim),이상용(Sang Yong Lee),송준희(Jun Hee Song),최준용(Jun Yong Choi),김효진(Hyo Jin Kim),김연직(Yon Jig Kim),국중하(Jung Wha Guk),허남준(Nam Jun Heo) 대한기계학회 2004 대한기계학회 춘추학술대회 Vol.2004 No.10
In recent years there has been a growing interest for the use of natural fibers in composite applications due to their low cost, environmental friendliness, and good mechanical properties. The purpose of this study is to determine the characteristic of bending strength on bamboo fiber reinforced polymer composites. The parameters of RTM process depend on the weight ratio of bamboo fiber and resin, the number of bamboo ply and amount of hardening agent. Besides the existence of pore in composites according to vacuum time investigated a effect on mechanical properties of reinforced polymer composites. Test result shows that bending strength was a maximum(approximately 850kgf/㎠) value when composite thickness was 6mm and weight ratio of resin was 13%.