2.Computed Tomography and Magnetic Resonance Imaging Findings of Bicuspid Aortic Valve and Related Abnormalities of the Heart and Thoracic Aorta
Korean Journal of Radiology 2023;24(10):960-973
The bicuspid aortic valve (BAV) is the most common congenital cardiovascular malformation. Patients with BAV are at higher risk of other congenital cardiovascular malformations and valvular dysfunction, including aortic stenosis/regurgitation and infective endocarditis. BAV may also be related to aortic wall abnormalities such as aortic dilatation, aneurysm, and dissection. The morphology of the BAV varies with the presence and position of the raphe and is associated with the type of valvular dysfunction and aortopathy. Therefore, accurate diagnosis and effective treatment at an early stage are essential to prevent complications in patients with BAV. This pictorial essay highlights the characteristics of BAV and its related congenital cardiovascular malformations, valvular dysfunction, aortopathy, and other rare cardiac complications using multimodal imaging.
3.Anti-inflammatory effect of enzymatic hydrolysates from Styela clava flesh tissue in lipopolysaccharide-stimulated RAW 264.7 macrophages and in vivo zebrafish model.
Nutrition Research and Practice 2015;9(3):219-226
BACKGROUND/OBJECTIVES: In this study, potential anti-inflammatory effect of enzymatic hydrolysates from Styela clava flesh tissue was assessed via nitric oxide (NO) production in lipopolysaccahride (LPS) induced RAW 264.7 macrophages and in vivo zebrafish model. MATERIALS/METHODS: We investigated the ability of enzymatic hydrolysates from Styela clava flesh tissue to inhibit LPS-induced expression of pro-inflammatory mediators in RAW 264.7 macrophages, and the molecular mechanism through which this inhibition occurred. In addition, we evaluated anti-inflammatory effect of enzymatic hydrolysates against a LPS-exposed in in vivo zebrafish model. RESULTS: Among the enzymatic hydrolysates, Protamex-proteolytic hydrolysate exhibited the highest NO inhibitory effect and was fractionated into three ranges of molecular weight by using ultrafiltration (UF) membranes (MWCO 5 kDa and 10 kDa). The above 10 kDa fraction down-regulated LPS-induced expression of inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2), thereby reducing production of NO and prostaglandin E2 (PGE2) in LPS-activated RAW 264.7 macrophages. The above 10 kDa fraction suppressed LPS-induced production of pro-inflammatory cytokines, including interleukin (IL)-1beta, IL-6, and tumor necrosis factor (TNF)-alpha. In addition, the above 10 kDa fraction inhibited LPS-induced phosphorylation of extracellular signal-regulated kinases (ERKs), c-Jun N-terminal kinase (JNK), and p38. Furthermore, NO production in live zebrafish induced by LPS was reduced by addition of the above 10 kDa fraction from S. clava enzymatic hydrolysate. CONCLUSION: The results of this study suggested that hydrolysates derived from S. clava flesh tissue would be new anti-inflammation materials in functional resources.
Cyclooxygenase 2
;
Cytokines
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Dinoprostone
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Extracellular Signal-Regulated MAP Kinases
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Interleukin-6
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Interleukins
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JNK Mitogen-Activated Protein Kinases
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Macrophages*
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Membranes
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Molecular Weight
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Nitric Oxide
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Nitric Oxide Synthase Type II
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Phosphorylation
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Tumor Necrosis Factor-alpha
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Ultrafiltration
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Zebrafish*
4.Regression of Congenital Melanocytic Nevus with Halo Phenomenon Induced by Serial Excision
Chang Hwa SONG ; You Jin JUNG ; Young Wook KO ; Jeong Eun KIM ; Joo Yeon KO ; Young Suck RO
Korean Journal of Dermatology 2021;59(4):310-313
Congenital melanocytic nevus is a hamartoma derived from the neural crest that is present at birth. Regression following surgical excision with an apparent halo phenomenon through suture lines has never been reported. A nine-year-old boy presented with a solitary symmetric, oval-shaped, blackish pigmented patch on his right forearm.He reported increasing size of the lesion with no other subjective symptoms. Histological examination of the first excisional biopsy revealed congenital melanocytic nevus, and serial excisions were planned. Interestingly, at the second visit at 18 months after the first biopsy, the size of the congenital melanocytic nevus was reduced with a peripheral whitish halo. Linear regression through suture lines and a peripheral halo was observed after the second and third serial excisions. The mechanism of the halo phenomenon remains elusive but is suggested theorized to be caused by destruction of melanocytes by immune responses of autoantibodies or cytotoxic T cells.
6.Regression of Congenital Melanocytic Nevus with Halo Phenomenon Induced by Serial Excision
Chang Hwa SONG ; You Jin JUNG ; Young Wook KO ; Jeong Eun KIM ; Joo Yeon KO ; Young Suck RO
Korean Journal of Dermatology 2021;59(4):310-313
Congenital melanocytic nevus is a hamartoma derived from the neural crest that is present at birth. Regression following surgical excision with an apparent halo phenomenon through suture lines has never been reported. A nine-year-old boy presented with a solitary symmetric, oval-shaped, blackish pigmented patch on his right forearm.He reported increasing size of the lesion with no other subjective symptoms. Histological examination of the first excisional biopsy revealed congenital melanocytic nevus, and serial excisions were planned. Interestingly, at the second visit at 18 months after the first biopsy, the size of the congenital melanocytic nevus was reduced with a peripheral whitish halo. Linear regression through suture lines and a peripheral halo was observed after the second and third serial excisions. The mechanism of the halo phenomenon remains elusive but is suggested theorized to be caused by destruction of melanocytes by immune responses of autoantibodies or cytotoxic T cells.
7.Hyperpigmentation of Both Hands due to Vitamin B12 Deficiency.
Jin Hwa SON ; Hyunju JIN ; Hyangsuk YOU ; Woo haing SHIM ; Gun Wook KIM ; Hoon Soo KIM ; Hyun Chang KO ; Moon Bum KIM ; Byung Soo KIM
Korean Journal of Dermatology 2018;56(7):455-456
No abstract available.
Hand*
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Hyperpigmentation*
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Vitamin B 12 Deficiency*
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Vitamin B 12*
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Vitamins*
8.A Case of Pancreatic Arteriovenous Malformation Presenting Upper Gastrointestinal Bleeding.
Su Hee PARK ; Mi Jeong KIM ; You Sang KO ; You Jin LIM ; Seung Yong HAN ; Hyun Woo BYUN ; Min Ho CHOI ; Hyun Joo JANG ; Sea Hyub KYE ; Jin LEE
Korean Journal of Gastrointestinal Endoscopy 2007;35(5):359-363
A pancreatic arteriovenous malformation (AVM) is a very rare disease entity that is usually asymptomatic; however, it may present with a massive gastrointestinal hemorrhage. Recent advances in cross-sectional imaging and the widespread availability of angiography have contributed to the diagnosis of this condition. A patient was transferred to our clinic due to unknown origin gastrointestinal bleeding and upper abdominal pain. Double balloon enteroscopy and duodenoscopy revealed a bleeding pancreatico-cholangio-duodenal fistula. We were able to diagnose an arteriovnous malformation with a pancreatico-cholangio-duodenal fistula by the use of angiography and from the post-operative pathological findings.
Abdominal Pain
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Angiography
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Arteriovenous Malformations*
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Diagnosis
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Double-Balloon Enteroscopy
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Duodenoscopy
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Fistula
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Gastrointestinal Hemorrhage
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Hemorrhage*
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Humans
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Pancreas
;
Rare Diseases
9.Comparison of Atypical Antipsychotics Discontinuation Rate in Acute Phase Hospitalized Patients-Retrospective Chart Review Study.
Changtae HAHN ; Young Sup WOO ; Ji Hee YOU ; Ho Jun SEO ; Jeewook CHOI ; Hyo Jin KO
Korean Journal of Psychopharmacology 2010;21(3):130-136
OBJECTIVE: The purpose of this study was to compare the discontinuation rate of widely prescribed atypical antipsychotics when administered to newly admitted, acutely ill patients with schizophrenia or bipolar mania. METHODS: Medical records of patients admitted to psychiatric ward of two university hospitals between January 2007 and December 2008 were retrospectively reviewed. Subjects were eligible for inclusion if they prescribed olanzapine, risperidone or aripiprazole for their psychotic or manic symptom control. Patient groups (olanzapine/risperidone/aripiprazole) were compared for rate of antipsychotics discontinuation and duration of treatment continuation. RESULTS: There was no statistically significant difference in the rates of discontinuation during hospitalized period between olanzapine, risperidone and aripiprazole. Rates of discontinuation were 14.5% for olanzapine, 18.6% for aripiprazole and 24.0% for risperidone. Predictor of treatment discontinuation was short titration period and long illness duration. CONCLUSION: This study demonstrated that risperidone, olanzapine and aripiprazole were comparable with no difference found on the discontinuation rate in treating acutely ill psychiatric patients. However, the small number of patients who participated in this study made it difficult to establish significance.
Antipsychotic Agents
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Benzodiazepines
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Bipolar Disorder
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Hospitals, University
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Humans
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Medical Records
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Piperazines
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Quinolones
;
Retrospective Studies
;
Risperidone
;
Schizophrenia
;
Aripiprazole
10.Predicting Factors Associated with Drug Compliance in Psychiatric Outpatients of a University Hospital.
Ji Hee YOU ; Young Sup WOO ; Changtae HAHN ; Ji Wook CHOI ; Hyo Jin KO
Korean Journal of Psychopharmacology 2010;21(1):29-34
OBJECTIVE: Drug compliance is closely related to progress and prognosis of psychiatric disease. We investigated drug compliance in psychiatric outpatients and factors that influence their compliance. METHODS: Patients who visited a university hospital were asked about drug information and drug compliance using questionnaires. Medical records of the patients were reviewed. Demographic variables, clinical characteristics and drug compliance related variables were compared between non-compliance group and compliance group. Logistic regression analysis was performed to clarify predictors of poor compliance. RESULTS: One hundred eighty one patients participate in this study. 150 patients (82.9%) were compliance group, 31 patients (17.1%) were included in non-compliance group. Patient-related, illness-related and treatment-related factors, DAI total score and knowledge of side effect did not show any difference in both groups. However, illness severity was relatively higher in non-compliance group (p = 0.070) and patient's satisfaction about explanation of side effect was lower in noncompliance group (p = 0.061). Moreover, patients who negatively answered for question about negative recognition to psychiatric medication in DAI questionnaire were more common in non-compliance group (p = 0.075). In logistic regression, answering negatively to question about negative recognition to psychiatric medication in DAI questionnaire was related to non-compliance, but did not reached statistical significance (p = 0.086). CONCLUSION: This study suggests that improving negative recognition about psychiatric medication through drug education and good doctor patient relationship could enhance drug compliance.
Compliance
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Humans
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Logistic Models
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Medical Records
;
Outpatients
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Prognosis
;
Surveys and Questionnaires