1.A Case of Sclerema Neonatorum.
Young Ha KIM ; Sung Bae PARK ; Kyu Cha KIM
Journal of the Korean Pediatric Society 1978;21(2):148-151
We were experienced a case of sclerema neonatorum which was developed in a 13 days old newborn, and we report it with a brief review.
Humans
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Infant, Newborn
;
Sclerema Neonatorum*
2.Cyclooxygenase-2 Expression Is Related to the Epithelial-to-Mesenchymal Transition in Human Colon Cancers.
Tae Jung JANG ; Kyu Ha JEON ; Ki Hoon JUNG
Yonsei Medical Journal 2009;50(6):818-824
PURPOSE: Down-regulation of E-cadherin is a hallmark of the epithelial-to-mesenchymal transition (EMT). EMT progression in cancer cells is associated with the loss of certain epithelial markers and the acquisition of a mesenchymal phenotype, as well as migratory activities. Cyclooxygenase-2 (COX-2) expression is associated with tumor invasion and metastasis in colon cancer. This study investigated the relationship between E-cadherin and COX-2 in colon cancer cells and human colon tumors. MATERIALS AND METHODS: Colon cancer cell lines and immunohistochemistry were used. RESULTS: E-cadherin expression was inversely related to the expressions of COX-2 and Snail in colon cancer cells. Ectopic expression of COX-2 or Snail reduced E-cadherin and induced a scattered, flattened phenotype with few intercellular contacts in colon cancer cells. Treatment of cancer cells with phorbol 12-myristate 13-acetate increased the expressions of COX-2 and Snail, decreased 15-hydroxyprostaglandin dehydrogenase expression, and increased the cells' motility. In addition, exposure to prostaglandin E2 increased Snail expression and cell motility, and decreased E-cadherin expression. Membranous E-cadherin expression was lower in adenomas and cancers than in the adjacent, non-neoplastic epithelium. In contrast, the expressions of Snail and COX-2 were higher in cancers than in normal tissues and adenomas. The expressions of COX-2 and Snail increased in areas with abnormal E-cadherin expression. Moreover, COX-2 expression was related to higher tumor stages and was significantly higher in nodal metastatic lesions than primary cancers. CONCLUSION: This study suggests that COX-2 may have a role in tumor metastasis via EMT.
Adult
;
Aged
;
Aged, 80 and over
;
Blotting, Western
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Cadherins/genetics/metabolism
;
Cell Differentiation/genetics/physiology
;
Cell Line, Tumor
;
Cell Movement/drug effects/genetics
;
Colonic Neoplasms/*metabolism/*pathology
;
Cyclooxygenase 2/genetics/metabolism/*physiology
;
Dinoprostone/pharmacology
;
Epithelial Cells/*cytology/metabolism
;
Epithelium/*metabolism
;
Female
;
HT29 Cells
;
Homeodomain Proteins/genetics/metabolism
;
Humans
;
Immunohistochemistry
;
Male
;
Mesoderm/*cytology/*metabolism
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Middle Aged
;
Reverse Transcriptase Polymerase Chain Reaction
;
Tetradecanoylphorbol Acetate/pharmacology
;
Transcription Factors/genetics/metabolism
3.Susceptibility-Weighted Imaging as a Distinctive Imaging Technique for Providing Complementary Information for Precise Diagnosis of Neurologic Disorder
Byeong-Uk JEON ; In Kyu YU ; Tae Kun KIM ; Ha Youn KIM ; Seungbae HWANG
Journal of the Korean Radiological Society 2021;82(1):99-115
Various sequences have been developed for MRI to aid in the radiologic diagnosis. Among the various MR sequences, susceptibility-weighted imaging (SWI) is a high-spatial-resolution, threedimensional gradient-echo MR sequence, which is very sensitive in detecting deoxyhemoglobin, ferritin, hemosiderin, and bone minerals through local magnetic field distortion. In this regard, SWI has been used for the diagnosis and treatment of various neurologic disorders, and the improved image quality has enabled to acquire more useful information for radiologists.Here, we explain the principle of various signals on SWI arising in neurological disorders and provide a retrospective review of many cases of clinically or pathologically proven disease or components with distinctive imaging features of various neurological diseases. Additionally, we outline a short and condensed overview of principles of SWI in relation to neurological disorders and describe various cases with characteristic imaging features on SWI. There are many different types diseases involving the brain parenchyma, and they have distinct SWI features.SWI is an effective imaging tool that provides complementary information for the diagnosis of various diseases.
4.Acute Acquired Metabolic Encephalopathy Based on Diffusion MRI
Se Jeong JEON ; See Sung CHOI ; Ha Yon KIM ; In Kyu YU
Korean Journal of Radiology 2021;22(12):2034-2051
Metabolic encephalopathy is a critical condition that can be challenging to diagnose. Imaging provides early clues to confirm clinical suspicions and plays an important role in the diagnosis, assessment of the response to therapy, and prognosis prediction. Diffusion-weighted imaging is a sensitive technique used to evaluate metabolic encephalopathy at an early stage.Metabolic encephalopathies often involve the deep regions of the gray matter because they have high energy requirements and are susceptible to metabolic disturbances. Understanding the imaging patterns of various metabolic encephalopathies can help narrow the differential diagnosis and improve the prognosis of patients by initiating proper treatment regimen early.
7.Treatment and Prognostic Factors for Traumatic Liver Injury.
Jung Min BAE ; Nak Hi KIM ; Hyun Kyu LEE ; Kyu Ha JEON ; Bong Choon JEON ; Jong Dae BAE ; Ho Keun JUNG ; Ki Hoon JUNG ; Byung Wook JUNG ; Sung Han BAE
Journal of the Korean Surgical Society 2004;66(6):490-495
PURPOSE: Due to its size and locatin, the liver is frequently injured in abdominal trauma. Recently, nonoperative management for liver injuries has been extended due to the development CT imaging, intensive care units, and their equipment and techniques. Herein, patients with traumatic liver injury were analyzed to evaluate its treatment and prognostic factors. METHODS: From 2001, January to 2003, July, 65 patients at our facility were confirmed to have traumatic liver injury. The operative or nonoperative managements were decided on the basis of the systolic blood pressure if no peritoneal irritation sign was noted. If the systolic blood pressure was stable, or recovered to within the normal range following hydration and transfusion at the emergency room, patients were managed nonoperatively. Hemodynamically unstable patients were managed operatively. The data were analysed using the SPSS program (Chi-squared tests and logistic regression analyses). RESULTS: 48 patients were treated nonoperatively, with 3 mortalities. The overall mortality rate was 15.8%, but only 6.4% in the nonoperative management group, compared to 67% in operative management group. In a Multivariate analysis the systolic blood pressure was found to be a reliable factor in traumatic liver injury and the mentality and ISS (injury severity score) reliable in finding complications in the nonoperative management group. The mentality was found statistically reliable for determining mortality in the operative management group, with the exception for the systolic blood pressure. CONCLUSION: The systolic blood pressure was an important indicator when considering the treatment plan in traumatic liver injury. An extensive study will be required that incorporates both nonoperative and operative management groups.
Blood Pressure
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Emergency Service, Hospital
;
Humans
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Intensive Care Units
;
Liver*
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Logistic Models
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Mortality
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Multivariate Analysis
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Reference Values
8.Mutagenic Assessment of Olmesartan Cilexetil by Bacterial Mutation Assay.
Ji Won KIM ; Ilyoung AHN ; Sung Ha RYU ; Hong Ryeol JEON ; Bong Sang LEE ; Kyu Bong KIM
Toxicological Research 2013;29(3):217-219
Hypertension is a serious health problem due to high frequency and concomitant other diseases including cardiovascular and renal dysfunction. Olmesartan cilexetil is a new antihypertensive drug associated with angiotensin II receptor antagonist. This study was conducted to evaluate the mutagenicity of olmesartan cilexetil by bacterial reverse mutation test using Salmonella typhimurium (TA100, TA1535, TA98, and TA1537) and Escherichia coli (WP2 uvrA). At the concentrations of 0, 62, 185, 556, 1667, and 5000 microg/plate, olmesartan cilexetil was negative in both Salmonella typhimurium and Escherichia coli regardless of presence or absence of metabolic activation system (S9 mix). These results demonstrate that olmesartan cilexetil does not induce bacterial reverse mutation.
Biotransformation
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Escherichia coli
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Hypertension
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Imidazoles
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Receptors, Angiotensin
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Salmonella typhimurium
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Tetrazoles
9.Analysis of Risk Factors for the Development of Incisional and Parastomal Hernias in Patients after Colorectal Surgery.
In Ho SONG ; Heon Kyun HA ; Sang Gi CHOI ; Byeong Geon JEON ; Min Jung KIM ; Kyu Joo PARK
Journal of the Korean Society of Coloproctology 2012;28(6):299-303
PURPOSE: The purpose of this study was to evaluate the overall rate and risk factors for the development of an incisional hernia and a parastomal hernia after colorectal surgery. METHODS: The study cohort consisted of 795 consecutive patients who underwent open colorectal surgery between 2005 and 2007 by a single surgeon. A retrospective analysis of prospectively collected data was performed. RESULTS: The overall incidence of incisional hernias was 2% (14/690). This study revealed that the cumulative incidences of incisional hernia were 1% at 12 months and 3% after 36 months. Eighty-six percent of all incisional hernias developed within 3 years after a colectomy. The overall rate of parastomal hernias in patients with a stoma was 6.7% (7/105). The incidence of parastomal hernias was significantly higher in the colostomy group than in the ileostomy group (11.9% vs. 0%; P = 0.007). Obesity, abdominal aortic aneurysm, American Society of Anesthesiologists score, serum albumin level, emergency surgery and postoperative ileus did not influence the incidence of incisional or parastomal hernias. However, the multivariate analysis revealed that female gender and wound infection were significant risk factors for the development of incisional hernias female: P = 0.009, wound infection: P = 0.041). There were no significant factors related to the development of parastomal hernias. CONCLUSION: Our results indicate that most incisional hernias develop within 3 years after a colectomy. Female gender and wound infection were risk factors for the development of an incisional hernia after colorectal surgery. In contrast, no significant factors were found to be associated with the development of a parastomal hernia.
Aortic Aneurysm
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Cohort Studies
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Colectomy
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Colorectal Surgery
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Colostomy
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Emergencies
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Female
;
Hernia
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Hernia, Ventral
;
Humans
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Ileostomy
;
Ileus
;
Incidence
;
Multivariate Analysis
;
Obesity, Abdominal
;
Prospective Studies
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Retrospective Studies
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Risk Factors
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Serum Albumin
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Surgical Stomas
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Wound Infection
10.The Clinical Consideration on the Prognosis of the Pontine Hematoma.
Kweon Beong CHAE ; Young Soo HA ; Chong Oon PARK ; Young KIM ; Sang Don LEE ; Ho Kyu JEON ; Jae Joong KIM
Journal of Korean Neurosurgical Society 1992;21(8):918-929
Pontine hematoma would be diagnosed and made its follow-up readily as the extent of hematoma could be clearly defined since the CT scan was available, especially with MRI in recent. Authors attemped to analyse 20 cases of pontine hematoma clinically, considering factors of influence their prognosis, admitted in Inha hospital from March 1989 to February 1992. Classification of pontine hematoma was made out according to the findings of brain CT scan taken on admission:2 cases of Type T1 to the hematoma localized in the tegmentum unilaterally, 1 case of Type T to those in the tegmentum bilaterally with some extent into the 4th ventricle, 12 in Type T to those in the tegmentum, midbrain and mostly the 4th ventricle, and 5 in Type B to those in the basis pontis mainly with tegmentum and midbrain. Of 219 spontaneous intracerebral hematoma, pontine hematoma was 9.1%. 17 hypertension and 11 previous CVA episodes including 7 cerebral infarction and 4 ICH were endountered. Age distribution was 50% in 6th decade and male to female ratio was 3:2. On admission 14 cases were under 6 in Glasgow coma scale, 6 small reactive pupils and 11 ocular bobbing. Particularly, nuclear facial paralysis was 14 in initial bilateral type, of which 7 dead within 10 days, 5 fixed in left facial paralysis and 1 case into right paralysis later. Four surgical interventions were 1 simple EVD, 1 Urokinase irrigation through EVD, 1 steretactic aspiration and 1 direct hematoma removal. Prognosis was related to various factos:GCS on entry, volume and classification of hematoma, in addition to laterality of nuclear facial paralysis. Clinical course was better in cases over 10 GCS on entry, volume and classification of hematoma, in addition to laterality of nuclear facial paralysis. Clinical course was better in cases over 10 GCS, Type T1 and T2, and unilateral facial paralysis in which the ratio of left to right was 2:1, while it was very poor in patients who were GCS below 6, Type B and bilateral facial paralysis. On the contrary, 7 of 20 cases were dead within 10 days, 13 patients alive for more 3 months after the hemorrhage were observed with fixed facial paralysis in nuclear type, 1 ilateral, 4 right, and 8 left side. It is suggested and requested for further careful follow-up that the hemorrhage may occur from the border zone between paramedian, short and long circumferential arteries supplying transection area of the pons unilaterally, near on around the facial nucleus, more frequent in left side.
Age Distribution
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Arteries
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Brain
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Cerebral Infarction
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Classification
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Facial Paralysis
;
Female
;
Follow-Up Studies
;
Glasgow Coma Scale
;
Hematoma*
;
Hemorrhage
;
Humans
;
Hypertension
;
Magnetic Resonance Imaging
;
Male
;
Mesencephalon
;
Paralysis
;
Pons
;
Prognosis*
;
Pupil
;
Tomography, X-Ray Computed
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Urokinase-Type Plasminogen Activator