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Induction of clusterin Expression by Neuronal Cell Death in Zebrafish

Journal of Genetics and Genomics 2014年第11期41卷 583-589页

作者： Yun-mi Jeong Tae-Eun Jin jung-Hwa Choi mi-Sun Lee Hyun-Taek Kim Kyu-Seok Hwang Doo-Sang Park Hyun-Woo Oh Joong-Kook Choi Vladimir Korzh Melitta Schachner Kwan-Hee You Cheol-Hee Kim Department of Biology Chungnam National University Korea Research Institute of Bioscience and Biotechnology Department of Biochemistry College of MedicineChungbuk National University Institute of Molecular and Cell Biology Agency for ScienceTechnology and Research Keck Center for Collaborative Neuroscience and Department of Cell Biology and Neuroscience Rutgers University Center for Neuroscience Shantou University Medical College

Clusterin, a protein associated with multiple functions, is expressed in a wide variety of mammalian tissues. Although clusterin is known to be involved in neurodegenerative diseases, ageing, and tumorigenesis, a detailed analysis of the consequences of gain- or loss-of- function approaches has yet to be performed to understand the underlying mechanisms of clusterin functions. Since clusterin levels change in neurological diseases, it is likely that clusterin contributes to cell death and degeneration in general. Zebrafish was investigated as a model system to study human diseases. During development, zebrafish clusterin was expressed in the notochord and nervous system. Embryonic overexpression of clusterin by mRNA microinjection did not affect axis formation, whereas its knock-down by anti-sense morpholino treatment resulted in neuronal cell death. To analyze the function of clusterin in neurodegeneration, a transgenic zebrafish was investigated, in which nitroreductase expression is regulated under the control of a neuron-specifc huC promoter which is active between the stages of early neuronal precursors and mature neurons. Nitroreductase turns metronidazole into a cytotoxic agent that induces cell death within 12 h. After metronidazole treatment, transgenic zebrafish showed neuron-specific cell death. Interestingly, we also observed a dramatic induction of clusterin expression in the brain and spinal cord in these fish, suggesting a direct or indirect role of clusterin in neuronal cell death and thus, more generally, in neurodegeneration.

关键词： Clusterin Neuronal cell death Neurodegeneration Zebrafish

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Gastric angiodysplasia in a hereditary hemorrhagic telangiectasia type 2 patient

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World Journal of Gastroenterology 2012年第15期18卷 1840-1844页

作者： minsu Ha Yoon Jae Kim Kwang An Kwon Ki Baik Hahm mi-jung Kim Dong Kyu Kim Young Jae Lee S Paul Oh Department of Gastroenterology Gachon University Gil Medical CenterIncheon 402-751South Korea World Class University program Lee Gil Ya Cancer and Diabetes InstituteGachon University of Medicine and ScienceIncheon 402-751South Korea Lee Gil Ya Cancer and Diabetes Institute Gachon University of Medicine and ScienceIncheon 402-751South Korea

Hereditary hemorrhagic telangiectasia(HHT)is a rare autosomal-dominantly inherited disease that occurs in approximately one in 5000 to 8000 *** diagnosis of HHT is made when a person presents three of the following four criteria:family history,recurrent nosebleeds,mucocutaneous telangiectasis,and arteriovenous malformations(AVM)in the brain,lung,liver and gastrointestinal(GI)*** epistaxis is themost common presenting symptom,AVMs affecting the lungs,brain and GI tract provoke a more serious *** mutations in endoglin,activin receptor-like kinase 1(ACVRL1;ALK1),and SMAD4,the genes involved in the transforming growth factor-βfamily signaling cascade,cause *** report here the case of a 63 year-old male patient who presented melena and GI bleeding episodes,proven to be caused by bleeding from multiple gastric *** revealed multiple angiodysplasia throughout the *** argon plasma coagulation was performed to control bleeding from a gastric *** patient has been admitted several times with episodes of hemoptysis and *** year ago,the patient was hospitalized due to right-sided weakness,which was caused by left basal ganglia hemorrhage as the part of HHT *** family history,the patient's mother and elder sister had died,due to intracranial hemorrhage,and his eldest son has been suffered from recurrent epistaxis for 20 years.A genetic study revealed a mutation in exon 3 of ALK1(c.199C>T;***67Trp)in the proband and his eldest son presenting epistaxis.

关键词： Hereditary hemorrhagic telangiectasia Angiodysplasia Intracranial hemorrhage Epistaxis Activin receptor-like kinase 1

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Asymptomatic lymphangioma involving the spleen and retroperitoneum in adults

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World Journal of Gastroenterology 2009年第44期15卷 5620-5623页

作者： Sook Hee Chung Young Sook Park Yun Ju Jo Seong Hwan Kim Dae Won Jun Byoung Kwan Son Jun Young jung Dae Hyun Baek Dong Hee Kim Yoon Young jung Won mi Lee Department of Internal Medicine Eulji General Hospital Eulji University School of MedicineSeoul 139-711South Korea Department of General Surgery Eulji General HospitalEulji University School of MedicineSeoul 139-711 South Korea Department of Radiology Eulji General HospitalEulji University School of MedicineSeoul 139-711 South Korea Department of Pathology Eulji General Hospital Eulji University School of MedicineSeoul 139-711 South Korea

Lymphangioma, a benign neoplasm of the lymphatic system, is common in children but rare in adults. Its clinical manifestations include abdominal pain, nausea, vomiting and a palpable mass. However, abdominal sonography or abdominal computed tomography （CT） scan can also incidentally reveal lymphangioma. A larger or symptomatic lymphangioma is treated with total resection to prevent recurrence, infection, torsion and enlargement. Although lymphangioma rarely becomes malignant, its prognosis is generally good. We report a cystic lymphangioma of the spleen and retroperitoneum, which was incidentally found in a 56-year-old man who was hospitalized due to a colon mass. Physical examination showed no specific findings. Abdominal CT revealed a 5.7 cm, non-enhanced multilobulated cystic mass with multiple sepia in the spleen and a 10 cm lobulated cystic mass in the paraaortic area. Splenectomy and retroperitoneal resection of the cystic mass were conducted. The endothelium of splenic and retroperitoneal cyst was immunohistochemically stained with D2-40 antibody. The patient was finally diagnosed with splenic cystic and retroperitoneal cavernous lymphangioma.

关键词： Lymphangioma Retroperitoneum Spleen

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Risk of sedation for diagnostic esophagogastroduodenoscopy in obstructive sleep apnea patients

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World Journal of Gastroenterology 2013年第29期19卷 4745-4751页

作者： Jae Myung Cha jung Won Jeun Kwan mi Pack Joung Il Lee Kwang Ro Joo Hyun Phil Shin Won-Chul Shin Department of Internal Medicine Kyung Hee University Hospital at Gang Dong Seoul 134-727 South Korea Department of Neurology Kyung Hee University Hospital at Gang Dong Seoul 134-727 South Korea

AIM: To investigate whether patients with obstructive sleep apnea (OSA) are at risk of sedation-related complications during diagnostic esophagogastroduodenoscopy (EGD). METHODS: A prospective study was performed in consecutive patients with OSA, who were confirmed with full-night polysomnography between July 2010 and April 2011. The occurrence of cardiopulmonary complications related to sedation during diagnostic EGD was compared between OSA and control groups. RESULTS: During the study period, 31 patients with OSA and 65 controls were enrolled. Compared with the control group, a higher dosage of midazolam was administered (P = 0.000) and a higher proportion of deep sedation was performed (P = 0.024) in the OSA group. However, all adverse events, including sedation fail-ure, paradoxical responses, snoring or apnea, hypoxia, hypotension, oxygen or flumazenil administration, and other adverse events were not different between the two groups (all P > 0.1). Patients with OSA were not predisposed to hypoxia with multivariate logistic regression analysis (P = 0.068). CONCLUSION: In patients with OSA, this limited sized study did not disclose an increased risk of cardiopulmonary complications during diagnostic EGD under sedation.

关键词： Conscious sedation Obstructive sleep apnea Endoscopy Complications Safety

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Self-efficacy for managing hypertension and comorbid conditions

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World Journal of Hypertension 2019年第3期9卷 30-41页

作者： mi jung Lee Sergio Romero HuanGuang Jia Craig A Velozo Ann L Gruber-Baldini Lisa M Shulman Department of Occupational Therapy University of FloridaGainesvilleFL 32610United States NF/SG VHS Center of Innovation on Disability and Rehabilitation Research-GNVGainesvilleFL 32601United States Division of Occupational Therapy Medical University of South CarolinaCharlestonSC 29425United States Department of Epidemiology and Public Health University of Maryland School of MedicineBaltimoreMD 21201United States Department of Neurology University of Maryland School of MedicineBaltimoreMD 21201United States

BACKGROUND Self-efficacy is defined an individual’s belief in completing necessary actions to achieve the desired *** individuals with hypertension and other chronic conditions,self-efficacy has been an essential factor to predict adherence to treatment *** To examine self-efficacy for managing chronic conditions in individuals with *** A total of 1087 individuals with chronic conditions in two groups(hypertension and non-hypertension groups)were selected in this *** two groups’selfefficacy for managing chronic conditions were investigated using the five domains of patient reported outcomes measurement information system selfefficacy for managing chronic conditions measures(PROmiS-SE);daily activities,emotions,medication and treatment,social interactions,and ***,the relationships between self-efficacy and other health-related outcomes for the hypertension group were examined using structural equation *** Among 1087 participants,437 reported having *** hypertension and non-hypertension groups were statistically different in self-efficacy for managing daily activities[F(1,598)=5.63,PmiS-SE(managing daily activities and emotions)significantly predict global physical health(P<0.001 and P<0.01 sequentially),and one domain(managing emotions)significantly predicts mental health(P<0.001).Hypertension patients’general quality of life was significantly predicted by global physical health(P<0.001)and mental health(P<0.001).CONCLUSION The hypertension group reported deficits in self-efficacy in managing daily activities as compared to the non-hypertension *** this hypertension group,self-efficacy functioned as an indirect predictor of general quality of life,mediated by global physical and mental health.

关键词： Hypertension Self-efficacy Self-management Chronic conditions

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Nontarget screening using passive air and water sampling with a level Ⅱ fugacity model to identify unregulated environmental contaminants

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Journal of Environmental Sciences 2017年第12期29卷 84-91页

作者： In-Young Chung Yu-mi Park Hyun-Jeoung Lee Hyuk Kim Dong-Hoon Kim Il-Gyu Kim Sang-min Kim Young-Sun Do Kwang-Seol Seok jung-Hwan Kwon Chemical Research Division Environmental Health Research Department National Institute of Environmental ResearchIncheon Division of Environmental Science and Ecological Engineering Korea University

It is thought that there are many unregulated anthropogenic chemicals in the *** risk assessment of chemicals, it is essential to estimate the predicted environmental concentrations. As an effort of identifying residual organic contaminants in air and water in Korea, nontarget screening using two-dimensional gas chromatography time-of-flight mass spectrometry（GC × GC-TOFMS） was conducted at 10 sites using polyurethane foam passive air sampler and at 6 sites using polydimethyl siloxane（PDMS） passive water sampler in three different seasons in 2014. More than 600 chemical peaks were identified satisfying the identification criteria in air and water samples, respectively, providing a list for further investigation. Chemical substances with reported national emission rates in2014（n = 149） were also screened for potential existence in the environment using a level Ⅱ fugacity model. Most of chemical substances classified as not detectable were not identified with detection frequency greater than 20% by nontarget screening, indicating that a simple equilibrium model has a strong potential to be used to exclude chemicals that are not likely to remain in the environment after emissions from targeted monitoring.

关键词： Nontarget screening GC × GC-TOFMS Passive sampling Pollutant release and transfer register(PRTR) Fugacity model

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Low grade chondrosarcoma of the nasal septum

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World Journal of Clinical Cases 2013年第1期1卷 64-66页

作者： Dong Hoon Lee Se Hee jung Tae mi Yoon Joon Kyoo Lee Young Eun Joo Sang Chul Lim Department of Otolaryngology-Head and Neck Surgery Chonnam National University Medical School and Hwasun Hospital Hwasun Jeonnam 519-809 South Korea Department of Radiology Chonnam National University Medical School and Hwasun Hospital Hwasun Jeonnam 519-809 South Korea Department of Research Institute of Medical Sciences Chonnam National University Medical School and Hwasun Hospital Hwasun Jeonnam 519-809 South Korea

Chondrosarcoma of the nasal septum is extremely rare. In some cases, it may be diff icult to preoperatively differentiate low grade chondrosarcoma from benign cartilaginous tumors such as chondroma. We report a case of low grade chondrosarcoma of the nasal septum with characteristic radiologic f indings. Characteristic radiologic f indings such as calcif ications on computed tomography scan and a ring-and-arc pattern on enhanced T1 weighted image were useful in the preoperative diagnosis of low grade chondrosarcoma of the septum. Awareness of radiologic f indings of low grade chondrosarcoma can help to make an accurate diagnosis and perform appropriate excision, leading to successful local control.

关键词： Chondrosarcoma Nasal septum Endoscopic surgical procedure Computed tomography Radiology

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Hemorrhagic hemangioma in the liver:A case report

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World Journal of Gastroenterology 2015年第23期21卷 7326-7330页

作者： Jeong min Kim Woo Jin Chung Byoung Kuk Jang Jae Seok Hwang Yong Hoon Kim jung Hyeok Kwon mi Sun Choi Department of Internal Medicine Keimyung University School of Medicine Department of Hepatobiliary Surgery Keimyung University School of Medicine Department of Radiology Keimyung University School of Medicine Department of Pathology Keimyung University School of Medicine

Hemangioma is the most common type of benign tumor that arises in the liver. Although rupture and hemorrhage of hepatic hemangioma are rare complications, they can be the cause of mortality. The authors report a case of hemorrhagic hepatic hemangioma: in a 54-yearold woman who was admitted with epigastric *** had taken oral contraceptives several weeks *** results of a blood examination were normal. An abdominal computed tomography scan revealed a tumor in hepatic segment 4, and a hemorrhage inside the cystic mass was suspected. The mass was removed laparoscopically to confirm the tumor properties and control the hemorrhage. The pathologic findings of the resected mass were consistent with hepatic hemangioma with intratumoral hemorrhage. The patient was discharged 8 d after the surgery, without further complications or complaints, and the patient's condition was found to have improved during follow-up.

关键词： Hemangioma Liver Hemorrhage Tumor Complication

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Lymphovascular invasion in more than one-quarter of small rectal neuroendocrine tumors

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World Journal of Gastroenterology 2016年第42期22卷 9400-9410页

作者： mi jung Kwon Ho Suk Kang Jae Seung Soh Hyun Lim Jong Hyeok Kim Choong Kee Park Hye-Rim Park Eun Sook Nam Department of Pathology Hallym University Sacred Heart Hospital Department of Internal Medicine Hallym University Sacred Heart Hospital Department of Pathology Kangdong Sacred Heart Hospital Hallym University College of Medicine

AIM To identify the frequency, clinicopathological risk factors, and prognostic significance of lymphovascular invasion(LVI) in endoscopically resected small rectal neuroendocrine tumors(NETs).METHODS Between June 2005 and December 2015, 104 cases of endoscopically resected small(≤ 1 cm) rectal NET specimens at Hallym University Sacred Heart Hospital in Korea were retrospectively evaluated. We compared the detected rate of LVI in small rectal NET specimens by two methods: hematoxylin and eosin(H&E) and ancillary immunohistochemical staining(D2-40 and Elastica van Gieson); in addition, LVI detection ratedifference between endoscopic procedures were also evaluated. Patient characteristics, prognosis and endoscopic resection results were reviewed by medical *** We observed LVI rates of 25.0% and 27.9% through H&E and ancillary immunohistochemical staining. The concordance rate between H&E and ancillary studies was 81.7% for detection of LVI, which showed statistically strong agreement between two methods(κ = 0.531, P 5 mm, P = 0.007), tumor grade 2(P = 0.006). Among those factors, tumor grade 2 was the only independent predictive factor for the presence of LVI(HR = 4.195, 95%CI: 1.321-12.692, P = 0.015). No recurrence was observed over 28.8 mo regardless of the presence of *** LVI may be present in a high percentage of small rectal NETs, which may not be associated with short-term prognosis.

关键词： Rectum Neuroendocrine tumor Lymphatic Immunohistochemistry Prognosis

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Assessing significant fibrosis using imaging-based elastography in chronic hepatitis B patients: Pilot study

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World Journal of Gastroenterology 2019年第25期25卷 3256-3267页

作者： Hee Sun Park Won Hyeok Choe Hye Seung Han mi Hye Yu Young Jun Kim Sung Il jung Jeong Han Kim So Young Kwon Department of Radiology Konkuk University School of MedicineSeoul 05030South Korea Department of Internal Medicine Konkuk University School of MedicineSeoul 05030South Korea Department of Pathology Konkuk University School of MedicineSeoul 05030South Korea

BACKGROUND Accurate detection of significant fibrosis(fibrosis stage 2 or higher on the METAVIR scale)is important especially for chronic hepatitis B(CHB)patients with high viral loads but with normal or mildly elevated alanine aminotransferase(ALT)levels because the presence of significant fibrosis is accepted as the indication for antiviral *** biopsy is the reference standard for diagnosing significant fibrosis,but it is an invasive ***,noninvasive imaging-based measurements,such as magnetic resonance elastography(MRE)or two-dimensional shear-wave elastography(2DSWE),have been proposed for the quantitative assessment of liver *** To explore MRE and 2D-SWE to identify fibrosis stage,and to compare their performance with that of serum-based *** The study enrolled 63 treatment-na?ve CHB patients with high viral loads but with normal or mildly elevated ALT levels who underwent liver biopsy before a decision was made to initiate antiviral *** and 2D-SWE were performed,and serum-based indices,such as FIB-4 and aspartate transaminase to platelet ratio index(APRI),were *** diagnostic performances of MRE,2D-SWE,FIB-4,and APRI for assessing significant fibrosis(≥F2)and cirrhosis(F4)were evaluated with liver histology as the reference standard,using receiver operating characteristic *** The liver fibrosis stage was F0/F1 in 19,F2 in 14,F3 in 14,and F4 in 16 patients,*** significantly discriminated F2 from F0/1(P=0.022),whereas 2D-SWE showed a broad overlap in distinguishing those *** showed a higher correlation coefficient value with fibrosis stage than 2D-SWE with fibrosis stage(0.869 vs 0.649,Spearman test;P<0.001).Multivariate linear regression analyses showed that fibrosis stage was the only factor affecting the values of MRE(P<0.001),whereas body mass index(P=0.042)and fibrosis stage(P<0.001)were independent factors affecting 2D-SWE *** performance for diagnos

关键词： Antiviral therapy Chronic hepatitis B Liver fibrosis Magnetic resonance elastography Ultrasound elastography

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