직장 카르시노이드 종양에서 Ki-67 발현의 예후적 중요성

홍수민 ( Su Min Hong ),김유선 ( You Sun Kim ),문정섭 ( Jung Seop Moon ),김진남 ( Jin Nam Kim ),오명기 ( Myoung Ki Oh ),권선옥 ( Sun Ok Kwon ),정성연 ( Seong Yeon Jeong ),홍성우 ( Seong Woo Hong ),강윤경 ( Yun Kyung Kang ) 대한소화기학회 2013 대한소화기학회지 Vol.61 No.2

Background/Aims: Rectal carcinoid tumors can be resected with endoscopy, and it is important to assess their prognostic factors. We evaluated the potential of Ki-67 expression as a prognostic factor in rectal carcinoid tumors. Methods: We retrospectively reviewed the medical records of 37 patients with rectal carcinoid tumors who got endoscopic resection from January 2001 to January 2011 at Inje University Seoul Paik Hospital. We analyzed their endoscopic and histologic findings, Ki-67 expression, clinical outcome, and prognosis. Results: The mean age (±SD) of the patients was 56.3±10.7 years, and the male : female ratio was 3.6:1. The mean tumor size was 0.5±0.4 cm, 33 patients showed grade 1 tumors (89.2%) and the average Ki-67 expression was 0.7±1.2%. Thirty five patients underwent endoscopic mucosal resection, and two required endoscopic submucosal dissection. Eight patients had positive margins after resection, but no cases of lymphovascular invasion were identified. The median follow-up duration was 21.4±25.4 months, and no recurrences were observed. Conclusions: In low grade rectal carcinoid tumors which are lack of central depression on colonoscopy, the expression of a molecular marker of malignant potential, Ki-67, was low. Therefore, endoscopic resection seemed to be a safe and effective treatment for these tumors.

Comparison of controlled ovarian stimulation outcomes for fertility preservation in women with breast cancer according to KI-67, histologic grade, pathologic type, and cancer stage

( Eun Ji Oh ),( Yeon Hee Hong ),( Seul Ki Kim ),( Jung Ryeol Lee ),( Byung Chul Jee ),( Chang Suk Suh ),( Seok Hyun Kim ) 대한산부인과학회 2020 대한산부인과학회 학술대회 Vol.106 No.-

Objective: This study aims to analyze that specific prognostic factors such as Ki-67 value, histologic grade, pathology type, and cancer stage can affect controlled ovarian stimulation outcomes(COS) for fertility preservation in women with breast cancer. Methods: This retrospective cohort study included 92 patients with breast cancer aged 21-44 who underwent COS from August 2012 to April 2020, excluding patients with previous gonadotoxic therapy history. All COS cycles were conducted letrozole-combined random start GnRH antagonist protocol. COS outcomes were compared according to prognostic factors;Ki-67 (< 30% vs. ≥ 30%), histologic grade (low vs. high), and pathologic type (intraductal carcinoma(IDC) vs. triple-negative breast cancer(TNBC)), and cancer stage (early (I, II) vs. advanced (III, IV)). Multivariate analysis was also conducted to find any parameter that can impact over 10 mature oocytes acquisition. Results: Among the 92 patients, 42 were Ki-67≥30% compared to 49 of Ki-67<30%. The number of oocytes, and initial mature oocytes were comparable between Ki-67<30% and ≥30 group. The maturation rate was significantly higher in Ki-67≥30% group than Ki-67<30% group (57.4±36.8% vs. 44.8±28.3%, p=0.041). The same results were drawn when divided according to IDC or TNBC. The maturation rate was significantly higher in TNBC than the IDC group (73.0±17.6% vs. 47.0±28.1% p=0.001). However, the histologic grade or stage did not show any difference in COS outcomes between high and low grade or early and advanced stages. With multivariate analysis, age and AMH are parameters associated with the acquisition of over 10 mature oocytes (OR 0.863, 95% CI [0.755-0.987], OR 1.408, 95% CI [1.145-1.732], respectively). Conclusion: Either Ki-67 or pathologic type can be a potential reliable marker for predicting COS outcome, especially maturation rate. Further study with larger sample size with specific conditions is necessary to clarify the correlation between breast cancer prognostic factors and COS outcomes.

서울의 PPNG 발생 빈도(1991-1992)

김재홍,윤기범,박평원,김영진,전경민,김영태,김중환,곽호,구상완,송민석,유옥,지혜구,김동원,문상은,박영립,정승호,성범진,성순제,엄주용,황정열,이기홍,이주협,전태진 대한화학요법학회 1994 대한화학요법학회지 Vol.12 No.1

The prevalence of PPNG among pretreated gonorrhea cases isolated at the STD clinic of Choong-Ku Public Health Center in Seoul has been studied and reported annually since 1981. In 1991, 123 strains of N.gonorrhoeae were isolated, among which 58(47.1%) were PPNG. In 1992, 98 starains of N.gonorrhoeae were isolated, among which 51(52.0%) were PPNG. In all, 109(49.3%) strains were found to be PPNG among 221 strains isolated between 1991-1992. The prevalence of PPNG in Seoul showed increased tendency till 1989, thereafter, it has been stationary or slightly decreasing.

김기택 시에 나타난 육식의 윤리와 아이러니

홍기정(Hong, Ki-Jung) 문학과환경학회 2013 문학과 환경 Vol.12 No.1

In these days, meat diet is problematic issues in terms of health, environmental and ethical issues. Poets in Korea focus the meat diet issue as a life-threatening problem (bioethics), the topics they are interested in is how to deal with the ethical pressure after eating living animals. The poet, Kim, Ki-Taik, criticizes unethical human behaviors for eating meats. Once people consider animals just for a menu, we make ourselves light of the life, which might make feeling of guilty. Continuously, that feeling might link with the negative logics about meat diets. However, Kim, Ki-Taik does not go to that negative logic but he also agrees we as a human instinctually want meats. Ironically, his poetry point out the meat diet’s unethical aspects which cause a sense of guilty but people as a human have no choice but to accept the fact that people eat meats. Thus, Kim, Ki-Taik claims that these ironies are the same as human’s proof of guilt. He also insists that it is inappropriate for human to take the evidence of crime, even though human natural is fundamentally evil, he believes. He tries to interpret the irony of meat diet metaphysically, to understand the reconciliation between life and death.

김치에서 분리한 Lactobacillus sp. JC-7과 Lactobacillus acidophilus 88간의 Electrofusion 최적조건 설정

조영배,최현정,백형석,전홍기 부산대학교 유전공학연구소 1997 분자생물학 연구보 Vol.13 No.-

김치 발효 숙성기간을 연장하고 신선도를 오랫동안 유지 할 수 있는 김치발효 starter의 개발을 목적으로 최적숙성기에 있는 김치로부터 bacteriocin생성능이 없는 유산균을 분리하여 동정하였으며, bacteriocin생성능이 우수한 L.acidophilus 88을 융합시키기 위해 electrofusion에 대한 최적 조건을 검토하였다. 분리균주는 Lactobacillus속으로 동정되어 Lactobacillus sp. JC-7이라 명명하였다. Electrofusion에 의해 생성된 융합주를 식별하기 위해 streptomycin(2.5㎎/ml)에 내성을 나타내는 Lactobacillus sp. JC-7변이주와 kanamycin(600㎍/ml)에 내성을 나타내는 L.acidophilus 88변이주를 분리하였다. Electrofusion을 100V/㎝, 120msec(72ohms,1670 capacitance) 에서 수행했을 때 융합효율이 가장 양호하였으며 전기장의 세기와 시간이 중가할수록 융합 효율이 현저히 감소하였다. 2가 양이온은 농도가 중가할수록 대체적으로 융합효율을 감소시키는 경향을 나타내었으나 1mM MGCl_2에서는 대조군에 비해 융합효율이 약간 증가하였다. PEG매개에 의한 융합법의 융합효율을 비교한 결과, 융합효율은 chemical fusion<electrofusion<electrofusion+20% PEG순을 나타내었다. Evaluation of Optimum Conditions for the Electrofusion between Lactobacillus sp. JC-7 Isolated from Kimchi and Lactobacillus acidophilus 88. Young-Bae Jo, Hyun-Jung Choi, Hyung-Suk Baik and Hong-Ki Jun*. Department of Microbiology, Pusan National University, Pusan 609-735,Korea-A lactic acid bacterium was isolated from kimchi. The isolated strain was identified as the genus Lactobacillus thrugh its morphological characteristics and named as Lactobacillus sp. JC-7. The optimum conditions for the electrofusion between streptomycin(2.5㎎/ml)resistant mutant of Lactobacillus acidophilus 88 and kanamycin(600㎍/ml) resistant mutant Lactobacillus sp. JC-7 were evaluated. The highest number of fusants were obtained at a capacitance value of 120msec(1670㎌), a field strength of 100V/㎝,and a pulse controller setting of 72Ω. The potimum pH of elecroporation buffer was 7.5 and the concentration of divalent cation was 1mM MG^2+. Electrofusants were efficiently obtained by addition 20% polyethylene glycol to electroporation buffer. The yield of fusion was better than that of using polyethylene glycol mediated chemical induction.

NANOARCHITECTURES: High‐Resolution Patterning of Various Large‐Area, Highly Ordered Structural Motifs by Directional Photofluidization Lithography: Sub‐30‐nm Line, Ellipsoid, Rectangle, and Circle Arrays (Adv. Funct. Mater. 10

Lee, Seungwoo,Kang, Hong Suk,Park, Jung‐,Ki WILEY‐VCH Verlag 2011 Advanced functional materials Vol.21 No.10

<P>A principal challenge in nanopatterning is to beat the resolution limit of established methods. On page 1770, Seungwoo Lee, Hong Suk Kang, and Jung‐Ki Park present the directional photofluidization of azopolymers, which allows the generation of large‐area, highly ordered nanoarchitectures with precisely controlled structural features. Additionally, this approach can offer unprecedented flexibility in control of the final feature size, and, simultaneously, its fluidic behavior under light irradiation signifi cantly reduces the line‐edge roughness </P>

Expression of Wnt Target Genes in Solid Pseudopapillary Tumor of the Pancreas: A Pilot Study

Kang, Chang Moo,Kim, Hyun Ki,Kim, Hoguen,Choi, Gi Hong,Kim, Kyung Sik,Choi, Jin Sub,Lee, Woo Jung Lippincott Williams Wilkins, Inc. 2009 PANCREAS Vol.38 No.2

OBJECTIVES:: Solid pseudopapillary tumor (SPT) of the pancreas is very rare. This study was performed to analyze the expression of Wnt signal target genes (matrix metalloproteinase-7 [MMP-7], cyclin-D1, and c-myc) and Ki-67 in resected SPTs to determine their clinicopathologic characteristics according to their expression. METHODS:: From January 1995 to December 2005, 23 patients underwent pancreatic resections for SPT of the pancreas. Among 23 formalin-fixed, paraffin-embedded tissues, 12 were evaluated as a pilot study. Immunohistochemistry was performed using various detection and antigen retrieval methods to detect MMP-7, cyclin-D1, c-myc, and Ki-67. The expression of Wnt target genes was correlated with clinicopathologic features of the patients. RESULTS:: Solid pseudopapillary tumors of the pancreas always showed cytoplasmic/nuclear accumulation of &bgr;-catenin, frequent expression of cyclin-D1, and low proliferation index. MMP-7, cyclin-D1, c-myc, and Ki-67 were not correlated with microscopic features suggesting malignant potential (P > 0.05). Tumor size was closely related to microscopic features of malignant potential and apparently has an inverse relationship with the expression of cyclin-D1 and Ki-67 (P < 0.05). CONCLUSIONS:: Low proliferative index and associated MMP-7 expression may cause an unpredictable clinical course in this tumor. Subtle changes in the intracellular environment, not pathologic (morphologic) changes, may elucidate the unpredictable clinical course of this tumor.

정신분열병에 대한 리스페리돈의 효과 및 안정성

이민수,김용구,김영훈,연병길,오병훈,윤도준,윤진상,이철,정희연,강병조,김광수,김동언,김명정,김상훈,김희철,나철,노승호,민경준,박기창,박두병,백기청,백인호,손봉기,손진욱,양병환,양창국,우행원,이정호,이종범,이홍식,임기영,전태연,정영조,정영철,정인과,정인원,지익성,채정호,한상익,한선호,한진희,서광윤 大韓神經精神醫學會 1998 신경정신의학 Vol.37 No.1

연구목적 : 본 시험의 목적은 임상시험 시작전에 연구자들을 대상으로 PANSS Workshop을 통하여 PANSS, ESRS에 대한 국내에서의 표준화 작업을 구축하고 새로운 정신병 치료제인 리스페리돈의 효과와 안정성을 재확인하여 리스페리돈 사용에 대한 적정화를 이루는데 있다. 연구방법 : 1996년 4월부터 1996년 9월까지 국내 39개 대학병원 정신과에 입원중인 혹은 증상이 악화되어 입원하는 정신분열병 환자 377명을 대상으로 다시설 개방 연구를 시행하였다. 1주일간의 약물 배설기간을 가진후, 리스페리돈을 8주간 투여하였고, 기준점, 1주, 2주, 4주, 그리고 8주후에 평가되었다. 용량은 제1일에는 리스페리돈 1mg씩 1일 2회, 제2일에는 2mg씩 1일 2회, 제3∼7일에는 3mg씩 1일 2회 투여하였다. 이후 환자의 임상상태에 따라 임의로 증량할 수 있으며, 최대 일일 16mg을 초과하지 않도록 하였다. 추체외로 증상을 조절하기 위한 투약을 허용하였다. 임상증상 및 부작용의 평가는 PANSS(Positive and Negative Syndrome Scale), CGI(Clinical Global Impression) 그리고 ESRS(Extrapyramidal Symptom Rating Scale)을 사용하였다. 연구결과 : 377명중 343명(91%)이 8주간의 연구를 완결하였다. 치료 종결시점인 8주후 PANSS 총점수가 20% 이상 호전된 경우를 약물 반응군으로 정의할때, 약물반응군은 81.3%였다. 리스페리돈에 반응하는 예측인자로는 발병연령, 이전의 입원 횟수, 유병기간이 관련 있었다. 리스페리돈은 1주후부터 PANSS양성, 음성, 및 일반정신병리 점수상에 유의한 호전을 보여 효과가 빨랐다. CGI의 경우도 기준점에 비해 1주후부터 유의한 감소를 나타내었다. ESRS의 경우, 파킨슨 평가점수는 기준점과 비교해 투여 1주, 2주, 4주후 유의하게 증가되었다가 8주후 기준점과 차이가 없었다. Dystonia 평가점수는 1주후만 유의한 증가를 보였으며, dyskinesia 평가점수는 유의한 차이가 없었다. 혈압, 맥박수의 생명징후 및 일반 혈액학 검사, 생화학적 검사, 심전도 검사에서 유의한 변화는 없었다. 결 론 : 이상의 다시설 개방 임상 연구를 통해 리스페리돈은 정신분열병 환자에서 양성증상뿐만 아니라 음성증상 및 전반적인 증상에도 효과적인 것으로 사료된다. 보다 명확한 평가를 위해서는 다른 항정신병약물과의 이중맹검 연구가 필요할 것으로 생각되며, 또한 장기적 치료에 대한 평가도 함께 이루어져야 하겠다. Objective : The purpose of this study was to investigate the efficacy and safety of risperidone in the treatment of Korean schizophrenic patients. Method : This multicenter open study included 377 schizophrenic patients drawn from 39 university hospitals. After a wash-out period of 1 week, the schizophrenic patients were treated with risperidone for 8 weeks and evaluated at 5 points ; at baseline, and 1, 2, 4 and 8 weeks of treatment. The dose was increased from 2mg/day(1mg twice daily) to 6mg/day(3mg twice daily) during the first week and adjusted to a maximum of 16mg/day over the next 7 weeks according to the patient's clinical response. Medication to control extrapyramidal symptoms was permitted. The psychiatric and neurological status of the patients was assessed by PANSS, CGI, and ESRS scales. Results : 343(91%) of 377 patients completed the 8-week trial period. Clinical improvement, as defined by a 20% or more reduction in total PANSS score at end point, was shown by 81.3% of patients. The predictors of response to risperidone were associated older age, shorter duration of illness, fewer previous hospitalization. Risperidone had rapid onset of action ; a significant decrease of the total PANSS and three PANSS factor(positive, negative, general), and CGI was already noticed at the end of first week. For the ESRS, parkinsonism rating scores were significantly increased until week 4 comparing with baseline. Dystonia rating scores were significantly increased until week 1, and dyskinesia rating scores were not significantly changed during the study. Laboratory parameters including vital sign, EKG, hematological, and biochemical values showed no significant changes during the trial. Conclusions : This study suggests that risperidone is generally safe and effective against both the positive and negative symptoms in our group of patients.

Halon 1301과 Halon 대체 소화약제를 기포제로 이용한 포 소화약제에 대한 연구

정기창,임성묵,이창섭,강영구,김홍 (사단법인)韓國火災 ·消防學會 1996 한국화재소방학회논문지 Vol.10 No.3

포 소화약제는 물보다 비중이 가벼운 액체 가연물 또는 입체면이 많은 건물에서 포 수용액을 팽창 발포시켜 대상물을 덮어 씌우거나 봉쇄해서 질식소화 시킬 수 있다. 포 소화약제로 소화성능이 탁월한 수성막포(AFFF) 소화약제를 노즐에 의해 공기와의 혼합으로 포를 형성하는 기존의 방법과 다른 방법으로 본 연구에서는 Halon 1301 및 Halon 대체 소화약제를 기포제로 사용하여 소화성능과 팽창비를 향상시킨 소화약제를 개발하게 되었다. 개발한 Halon 1301과 Halon 대체 소화약제를 기포제로 사용한 수성막포 소화약제는 적은 양의 수성막포 수용액으로 많은 양의 포를 형성하므로 휴대용 포 소화기 또는 포 소화설비 등에 유용하게 사용할 수 있다. The AFFF(Aqueous Film Forming Foam : 3M Company's Light Water) agent are synthetic compounds that foams which are similar to those produced by protein based materials. The foam extinguishing agent was used in the extinguisher was the AFFF agent. We sought, however, to make other foams by using halon 1301(CF_3Br) and halon alternatives, such as HCFC Blend A(CHClF_2 82%, CF_3CHCl_2 4.75%, CF_3CHClF 9.5%, C_10H_16 3.75%), HFC-227ea (CF_3CHFCF_3). We selected these alternatives instead of air in order to raise the expansion ratio of the AFFF agent. By these means we discovered that it is possible to increase the expansion ratio of the AFFF agent up to 44 : 1 and up to 24 : 1 when HFC-227ea was used as a halon alternatives. Therefore our new foam extinguishing agents can be used in a portable extinguishers.

작업환경을 통합한 전과정평가 기법에 관한 연구

김익,홍기정,고지연,허탁 한국전과정평가학회 2004 한국전과정평가학회지 Vol.5 No.1

일반적으로 전과정평가는 제품시스템의 전과정에서 사업장으로 들어오거나 사업장에서 배출되는 물질들을 정량화하고 이들이 외부환경에 미치는 잠재적인 영향을 평가하는 환경성평가 도구이다. 하지만 사업장에서 배출되는 물질들은 작업장의 외부환경 뿐만 아니라 작업환경에도 영향을 미친다. 이에 따라 본 연구에서는 전과정평가의 기본골격에 작업환경을 통합하여 평가할 수 있는 방법론을 개발하였다. 본 방법론에서는 서로 다른 특성을 가지는 작업환경과 외부환경의 영향을 적절하게 통합하기 위하여 시스템경계와 범주지표의 수준을 동일하게 맞출 수 있는 일반요건을 설정하였다. 시스템경계의 수준을 동일하게 하기 위하여 산업연관분석(IOA)기법을 도입하였고, 범주지표의 수준을 동일하게 조정하기 위하여 DALY, PAF, LWD와 같은 종말점 수준의 범주지표를 활용하였다. 개발한 방법론에 대한 이해를 돕기 위하여 국내에서 생산된 석유화학제품을 중심으로 사례연구를 수행하였다. A conventional life cycle assessment (LCA) framework mainly evaluates the environmental impacts associated with inputs and outputs from/to external environment of a product system. However the inputs and outputs generated from a facility influence not only the external environment but also the working environment. Therefore, this study developed the methodology that could integrates the working environment into a conventional LCA framework. It established the general requirements for adjusting the levels of the system boundary and category indicators in order to integrate appropriately the impacts of both the working environment and the external environment which have the different characteristics. Thus, this study introduced Input Output Analysis (IOA) technique in order to extend the system boundary to the life cycle of a product system, and applied the category indicator such as the number of Disability Adjusted Life Years (DALY), the Potentially Affected Fraction (PAF) and Lost Work Days (LWD) in order to assess the impacts of end point level. A case study of a petrochemical company in Korea was provided as an example for illustrating the feasibility of the methodology developed in this study.