식도의 원주상피 피복 점막에서 점액유전자 발현 및 세포증식능에 대한 연구

최석채 ( Suck Chei Choi ),김용성 ( Yong Sung Kim ),김기훈 ( Ki Hoon Kim ),김헌수 ( Hun Soo Kim ),조향정 ( Hyang Jeong Jo ),윤기중 ( Ki Jung Yun ) 대한소화기기능성질환·운동학회 2007 Journal of Neurogastroenterology and Motility (JNM Vol.13 No.1

목적 : 바렛식도는 지속적인 위식도역류 등으로 원위부 식도에 정상적으로 존재하는 편평상피세포 대신에 배상세포를 포함하는 장형 원주세포로 식도 점막이 피복되는 것을 말한다. 그리고 이형성을 거쳐 선암종으로 진행할 수 있기 때문에 이형성 이전 단계인 바렛식도의 발암과정에 대한 연구가 필요하다. 이에 바렛식도와 배상세포를 포함하지 않은 원주세포만 있는 식도를 대조군으로 하여 점액유전자 및 세포증식능에 대해 비교 연구하였다. 대상 및 방법 : 임상 및 내시경적으로 바렛식도가 의심되어 원위부 식도에서 생검한 환자들 중에서 배상세포가 있어 조직학적으로 바렛식도로 증명된 25명의 환자와 배상세포가 없었던 환자들 중에서 무작위로 선택한 30예를 대조군으로 하였다. 생검 당시의 나이와 성별 그리고 MUC1, MUC2, Ki-67에 대한 면역조직화학적 염색을 시행하였다. 결과 : 바렛식도의 평균 나이 및 남자 비율은 각각 65.3±10.1세, 76.0%이였고, 대조군의 평균 나이 및 남자 비율은 각각 53.0±14.8세, 60.0%로 바렛식도의 나이가 대조군식도보다 의의있게 높았다. MUC1은 바렛식도 및 대조군 모두에서 100% 발현되었고, MUC2 발현율은 바렛식도 및 대조군에서 각각 92%, 20%이었다. Ki-67 발현율은 바렛식도 및 대조군에서 각각 80.0%, 70.0%이였고, Ki-67 발현 강도의 평균은 바렛식도 1.20±0.76, 대조군 0.77±0.57로 발현 강도에서 바렛식도가 의의있게 높았다. 결론 : 바렛식도는 원주세포만 있는 식도에서 보다 좀더 지속적인 위식도역류 등의 자극으로 생긴다. 그리고 MUC2는 주로 바렛식도에서 발현되고 세포증식능은 바렛식도에서 좀더 높으며 이는 MUC2 발현과 관련될 수 있다고 생각된다. Background/Aims: Barrett`s esophagus is characterized by the presence of metaplastic columnar epithelium with goblet cells in the distal esophagus. Barrett`s esophagus progresses through low grade dysplasia and high grade dysplasia to adenocarcinoma. We studied the patient age, the mucin gene and the proliferation activity of biopsy-proven Barrett`s esophagus and simple columnar epithelium-lined esophagus. Methods: To evaluate the mucin gene expression and proliferation activity, twenty five cases of Barrett`s esophagus and thirty cases of control esophagus were examined immunohistochemically with using the monoclonal antibodies to MUC1, MUC2 and Ki-67. Results: The Barrett`s esophagus patients were older (mean: 65.3±10.1 years) than the control patients (mean: 53.0±14.8 years). The MUC1 expression was 100% in both Barrett`s esophagus and the control esophagus. An MUC2 expression was observed in 92.0% of the Barrett`s esophagus and 20.0% of the control esophagus. The rate and intensity of the Ki-67 expression was higher in the Barrett`s esophagus (80.0%, 1.20±0.76) than that in the control esophagus (70.0%, 0.77±0.57). Conclusions: Barrett`s esophagus is a metaplastic lesion due to the more long-standing gastroesophageal reflux than that in a simple columnar epithelium-lined esophagus. The cause of increased proliferation activity in Barrett`s esophagus may be related to the MUC2 expression. (Kor J Neurogastroenterol Motil 2007;13:21-25)

간내 담관암의 초음파 및 전산화 단층촬영소견 : Ultrasound and CT Findings

김완진,김표년,김일영,홍현숙,이혜경,권귀향,김기정 순천향대학교 1995 Journal of Soonchunhyang Medical Science Vol.1 No.1

BMB Reports : Connexin32 inhibits gastric carcinogenesis through cell cycle arrest and altered expression of p21^Cip1 and p27^Kip1

( Hyang Jee ),( Su Hyung Lee ),( Jun Won Park ),( Bo Ram Lee ),( Ki Taek Nam ),( Dae Yong Kim ) 생화학분자생물학회(구 한국생화학분자생물학회) 2013 BMB Reports Vol.46 No.1

Gap junctions and their structural proteins, connexins (Cxs), have been implicated in carcinogenesis. To explore the involvement of Cx32 in gastric carcinogenesis, immunochemical analysis of Cx32 and proliferation marker Ki67 using tissue-microarrayed human gastric cancer and normal tissues was performed. In addition, after Cx32 overexpression in the human gastric cancer cell line AGS, cell proliferation, cell cycle analyses, and p21^Cip1 and p27^Kip1 expression levels were examined by bromodeoxyuridine assay, flow cytometry, real-time RT-PCR, and western blotting. Immunohistochemical study noted a strong inverse correlation between Cx32 and Ki67 expression pattern as well as their location. In vitro, overexpression of Cx32 in AGS cells inhibited cell proliferation significantly. G1 arrest, up-regulation of cell cycle-regulatory proteins p21^Cip1 and p27^Kip1 was also found at both mRNA and protein levels. Taken together, Cx32 plays some roles in gastric cancer development by inhibiting gastric cancer cell proliferation through cell cycle arrest and cell cycle regulatory proteins. [BMB Reports 2013; 46(1): 25-30]

Dietary fat increases solid tumor growth and metastasis of 4T1 murine mammary carcinoma cells and mortality in obesity-resistant BALB/c mice

Kim, Eun Ji,Choi, Mi-Ran,Park, Heesook,Kim, Minhee,Hong, Ji Eun,Lee, Jae-Yong,Chun, Hyang Sook,Lee, Ki Won,Yoon Park, Jung Han BioMed Central 2011 Breast cancer research Vol.13 No.4

<P><B>Introduction</B></P><P>High-fat diets (HFDs) are known to cause obesity and are associated with breast cancer progression and metastasis. Because obesity is associated with breast cancer progression, it is important to determine whether dietary fat <I>per se </I>stimulates breast cancer progression in the absence of obesity. This study investigated whether an HFD increases breast cancer growth and metastasis, as well as mortality, in obesity-resistant BALB/c mice.</P><P><B>Methods</B></P><P>The 4-week-old, female BALB/c mice were fed HFD (60% kcal fat) or control diet (CD, 10% kcal fat) for 16 weeks. Subsequently, 4T1 mammary carcinoma cells were injected into the inguinal mammary fat pads of mice fed continuously on their respective diets. Cell-cycle progression, angiogenesis, and immune cells in tumor tissues, proteases and adhesion molecules in the lungs, and serum cytokine levels were analyzed with immunohistochemistry, Western blotting, and enzyme-linked immunosorbent assay (ELISA). <I>In vitro </I>studies were also conducted to evaluate the effects of cytokines on 4T1 cell viability, migration, and adhesion.</P><P><B>Results</B></P><P>Spleen and gonadal fat-pad weights, tumor weight, the number and volume of tumor nodules in the lung and liver, and tumor-associated mortality were increased in the HFD group, with only slight increases in energy intake and body weight. HF feeding increased macrophage infiltration into adipose tissues, the number of lipid vacuoles and the expression of cyclin-dependent kinase (CDK)2, cyclin D1, cyclin A, Ki67, CD31, CD45, and CD68 in the tumor tissues, and elevated serum levels of complement fragment 5a (C5a), interleukin (IL)-16, macrophage colony-stimulating factor (M-CSF), soluble intercellular adhesion molecule (sICAM)-1, tissue inhibitors of metalloproteinase (TIMP)-1, leptin, and triggering receptor expressed on myeloid cells (TREM)-1. Protein levels of the urokinase-type plasminogen activator, ICAM-1, and vascular cell adhesion molecule-1 were increased, but plasminogen activator inhibitor-1 levels were decreased in the lungs of the HFD group. <I>In vitro </I>assays using 4T1 cells showed that sICAM-1 increased viability; TREM-1, TIMP-1, M-CSF, and sICAM-1 increased migration; and C5a, sICAM-1, IL-16, M-CSF, TIMP-1, and TREM-1 increased adhesion.</P><P><B>Conclusions</B></P><P>Dietary fat increases mammary tumor growth and metastasis, thereby increasing mortality in obesity-resistant mice.</P>

관상동맥질환을 동반한 모야모야병 1례

김동기,이영태,김기향,김성만,김대경,김두일,김동수 白中央醫療院 2005 仁濟醫學 Vol.26 No.1

Moyamoya disease is an occlusive intracranial arteriopathy with an abnormal cerebral vascular collateral networks. Although this disease is known to be associated with stenosis of extracranial arteries, such as the renal artery, a case associated with stenosis of the coronary artery is extremely rare. We report a case of coronary artery occlusive disease affected by Moyamoya disease. The patient was a 38-year-old female experiencing intermittent headache and exer tional chest pain. Cerebral MRI showed complete obstruction of both internal carotid arteries and abnormal cerebrovascular systems which confirmed Moyamoya disease. Coronary angiography showed a significant stenosis of left anterior descending coronary artery ostium with TIMI grade I collateral blood flow from the normal right coronary artery. After coronary artery stenting and medical treatment for headache, her subjective symptoms were relieved. In Moyamoya patient, an evaluation of the extracranial (especially coronary artery) vascular system should be considered if there are some evidences of coronary artery disease.

베체트병 환자에서 Azathioprine으로 유발된 급성 췌장염 1례

김기향,권민정,김동기,김애란,김윤정,박지훈,이영태,박보민,김동욱 白中央醫療院 2005 仁濟醫學 Vol.26 No.1

Although many drug are thought capable of initiating acute pancreatitis, following azathioprine administration represents the 5% incidence by far the highest recorded incidence to date. We report a 35-year-old male who developed acute pancreatitis in the course of treatment with azathioprine for Behcet's disease. He was admitted due to abdominal pain, diarrhea, and fever for 10 days. Serum amylase and lipase levels were 510U/L and 3702U/L respectively. The abdominal CT scan revealed diffuse enlargement of the pancreas. There was no history of alcohol use or gall bladder disease. We considered drugs, especially azathioprine, as the cause of acute pancreatitis. We diagnosed it as acute pancreatitis. The patient was treated conservatively with hydration and analgesics. The symptom subsided within four days. Five days later, azathioprine was resumed. And the patient complained of abdominal pain. The elevated levels of serum amylase and lipase confirmed the recurrence of pancreatitis. His symptom subsided when azathioprine intake the stopped, and the serum amylase and lipase levels returned to normal level within five days.

특발성 과호산구 증후군 환자의 치료 도중 발생한 간혈종 1례

이영태,김동기,박지훈,김윤정,김기향,박보민,권민정,김애란,이원식,주영돈,손창학 白中央醫療院 2005 仁濟醫學 Vol.26 No.1

Idiopathic hypereosinophilic syndrome is characterized by marked elevation of eosinophil count ( >1,500/㎣) in peripheral blood without explaining etiology. It shows tissue involvement in many organs such as liver, G-I tract, myocar dium, lung, skin, kidney and nerve. Some case of hypereosinophilic syndrome with hepatic involvement have been reported, but not much. We have recently experienced a case with idiopathic hypereosinophilic syndrome of a 40 year old man who presented with RUQ pain. By abdominal CT, ill- defined subcapsular hematoma was detected. Liver biopsy showed eosinophilic infiltration within the portal tract and sinusoid. Drain procedure and corticosteroid adminiiatbrought marked improvement of clinical manifestation, hematologic abnormality and radiologic abnormality.

ISOLATION AND CHARACTERIZATION OF MOLECULAR MARKER FOR SEVERAL RACES OF PYRICULARIA ORYZAE USING RANDOM AMPLIFIED POLYMORPHIC DNA

Hong, Sun-Min,Bae, Dong-Won,Kim, Mee-Hyang,Shim, Chang-Ki,Kang, Kyu-Young,Kim, Nam-Soo,Kim, Hee-Kyu Plant Molecular Biology & Biotechnology Research C 1994 Plant molecular biology and biotechnology research Vol.1994 No.

Primer 155(GCTGGCGCTG) was the most useful primer with distinctive polymorphic DNA pattern to distinguish between KI races and KJ races. Primer 173(CAGGCGGCGT) showed polymorphic DNA pattern to distinguish isolates of KI-100 race. The specific DNA fragment of 0.6Kb, generated from 88-62 of KJ-201 race by RAPD with primer 412)TGCGCCGCTG), was promising as a molecular marker to identify the isolate.

정지영상 압축을 위한 이진적응에 관한 연구

김향태,위승정,정재영,최호진,최봉한,이웅기 조선대학교 통계연구소 1999 統計硏究所論文誌 Vol.1 No.1

대용량 저장장치의 출현, 컴퓨터 성능 및 초고속 망의 급속한 성장, 디지털 필름스캐너의 성능 향상 및 비용 감소 덕분에 디지털 형태로 영상을 다루기 위한 요구가 점차 증대되는 추세이다. 디지털 영상은 항상 고품질을 유지해야 하므로 화소 당 비트를 높게 할당하는데 이때 소요되는 방대한 비트 수를 효과적으로 감소시켜 저장용량 및 대역폭을 줄이기 위해서는 효율적인 영상 압축이 요구된다. 본 눈문은 디지털 영상의 압축을 위한 새로운 이진적응 방식을 제안한다. 먼저 변환된 예측오류를 얻기 위해 적응예측을 하고, 모델 템플리트로부터 적당한 예측오류 값 영역을 하나의 context영역이 되도록 하는 방식으로 부호화에 적절한 수의 context 영역을 결정한다. 그리고 부호화 효율을 개선하기 위해 개별적인 context 영역에서 부호화 될 예측오류가 나타날 확률을 근접하게 추정한 후, 고 빈도 예측 심볼 집합을 이진적응에 적용하여 부호화의 효율을 개선한다.

성인남자의 내장지방량에 관한 분석

김기진,오향란 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.20 No.1

This study was performed the measurement of intra-abdominal fat, body circumference, and skinfold thickness, for the analysis of characteristics relation to obesity. Subjects were consisted of 20-30 aged adult men, as normal weight men(BMI : 18.5-24.9 ㎏/m2) and obese men(BMI : above 25 ㎏/m2). Skinfold thickness and body circumference of obese group showed significantly higher values than normal group, but hip circumference and WHR showed no significant difference between two groups. Visceral fat and VSR of obese group showed significantly higher values than normal group. Although normal group showed the normal range of BMI, but these subjects was included to visceral obesity type by the high values of visceral fat area and VSR(145.51±39.74 ㎝2 and 0.45±0.15). In the relationship of body composition variables, BMI showed a significant correlation coefficients with abdominal and thigh circumferences, visceral fat area, and VSR, and visceral fat area showed a significant correlation coefficients with BMI, abdominal and thigh circumferences, and total abdominal fat area. In these results, it was suggested that general adult subjects showed the serious tendency of visceral fat increase.