1.Intraparenchymal Pericatheter Cyst as a Complication of a Ventriculo-Peritoneal Shunt in a Premature Infant.
Hae Ri RIM ; Sung Kyoo HWANG ; Soon Hak KWON ; Heng Mi KIM
Journal of Korean Neurosurgical Society 2011;50(2):143-146
A ventriculo-peritoneal shunt is a standard surgical management for hydrocephalus, but complications may impede the management of this disease. Obstruction of the catheter is one of the most common complications and manifests clinically in various ways. Intraparenchymal cyst development after shunt malfunction has been reported by several authors, but the underlying mechanism and optimal treatment methods are debatable. The authors report a case of intraparenchymal cyst formation around a proximal catheter in a premature infant after a ventriculo-peritoneal shunt and discuss its pathogenesis and management.
Catheters
;
Humans
;
Hydrocephalus
;
Infant, Newborn
;
Infant, Premature
;
Ventriculoperitoneal Shunt
2.Anti-inflammatory and antioxidant effects of umbelliferone in chronic alcohol-fed rats.
Mi Ok SIM ; Hae In LEE ; Ju Ri HAM ; Kwon Il SEO ; Myung Joo KIM ; Mi Kyung LEE
Nutrition Research and Practice 2015;9(4):364-369
BACKGROUND/OBJECTIVES: Inflammation is associated with various types of acute and chronic alcohol liver diseases. In this study, we examined whether umbelliferone (7-hydroxycoumarin, UF) ameliorates chronic alcohol-induced liver damage by modulating inflammatory response and the antioxidant system. METHODS: Rats were fed a Liber-Decarli liquid diet containing 5% alcohol with or without UF (0.05 g/L) for 8 weeks, while normal rats received an isocaloric carbohydrate liquid diet. RESULTS: Chronic alcohol intake significantly increased serum tumor necrosis factor-alpha (TNF-alpha) and interleukin 6 levels and decreased interleukin 10 level; however, UF supplementation reversed the cytokines related to liver damage. UF significantly suppressed hepatic lipopolysaccharide binding protein, toll-like receptor 4 (TLR4), nuclear factor kappa B, and TNF-alpha gene expression increases in response to chronic alcohol intake. Masson's trichrome staining revealed that UF improved mild hepatic fibrosis caused by alcohol, and UF also significantly increased the mRNA expressions and activities of superoxide dismutase and catalase in liver, and thus, decreased lipid peroxide and mitochondrial hydrogen peroxide levels. CONCLUSIONS: The findings of this study indicate that UF protects against alcohol-induced liver damage by inhibiting the TLR4 signaling pathway and activating the antioxidant system.
Animals
;
Antioxidants*
;
Carrier Proteins
;
Catalase
;
Cytokines
;
Diet
;
Fibrosis
;
Gene Expression
;
Hydrogen Peroxide
;
Inflammation
;
Interleukin-10
;
Interleukin-6
;
Liver
;
Liver Diseases
;
NF-kappa B
;
Rats*
;
RNA, Messenger
;
Superoxide Dismutase
;
Toll-Like Receptor 4
;
Tumor Necrosis Factor-alpha
3.Psychometric Properties of a Short Korean Version of the Revised Obsessive Intrusion Inventory.
Jang Won SEO ; Min Jung BAEK ; Mi So LEE ; Ju Ri JEON ; Seok Man KWON
Psychiatry Investigation 2015;12(3):288-294
OBJECTIVE: The Revised Obsessive Intrusion Inventory (ROII) is a 52-item scale that evaluates obsessional intrusive thoughts. The aim of the present study was to validate a short, 20-item Korean version of the ROII (ROII-20). METHODS: Of the 1125 participants who completed the ROII-20, 895 participants completed the scale to examine the factor structure of the scale. A subgroup of these participants (n=53) completed the scale twice to determine test-retest reliability. To establish external validity, 230 participants completed the scale and other questionnaires. RESULTS: Exploratory factor analyses suggested a hierarchical model comprising two higher order factors of autogenous obsessions (resulting from aggressive thoughts and sexual thoughts) and reactive obsessions (resulting from thoughts about contamination, thoughts about accidents, and thoughts about dirt). Confirmatory factor analyses supported this model. The results indicated good internal consistency and test-retest reliability. External validity was supported by relationships with obsessive-compulsive symptoms and general distress. CONCLUSION: The ROII-20 presents good psychometric properties and may be considered as a promising instrument for measuring obsessional intrusions.
Obsessive Behavior
;
Psychometrics*
;
Surveys and Questionnaires
4.Nutlin-3 enhances the bortezomib sensitivity of p53-defective cancer cells by inducing paraptosis.
Dong Min LEE ; In Young KIM ; Min Ji SEO ; Mi Ri KWON ; Kyeong Sook CHOI
Experimental & Molecular Medicine 2017;49(8):e365-
The proteasome inhibitor, bortezomib, is ineffective against many solid tumors. Nutlin-3 is a potent antagonist of human homolog of murine double minute 2/p53 interaction exhibiting promising therapeutic anti-cancer activity. In this study, we show that treatment of various p53-defective bortezomib-resistant solid tumor cells with bortezomib plus nutlin-3 induces paraptosis, which is a cell death mode accompanied by dilation of the endoplasmic reticulum (ER) and mitochondria. Bortezomib alone did not markedly alter cellular morphology, and nutlin-3 alone induced only a transient mitochondrial dilation. However, bortezomib/nutlin-3 co-treatment triggered the progressive fusion of swollen ER and the formation of megamitochondria, leading to cell death. Mechanistically, proteasomal-impairment-induced ER stress, CHOP upregulation and disruption of Ca²⁺ homeostasis were found to be critically involved in the bortezomib/nutlin-3-induced dilation of the ER. Our results further suggest that mitochondrial unfolded protein stress may play an important role in the mitochondrial dilation observed during bortezomib/nutlin-3-induced cell death. Collectively, these findings suggest that bortezomib/nutlin-3 perturbs proteostasis, triggering ER/mitochondria stress and irrecoverable impairments in their structure and function, ultimately leading to paraptotic cell death.
Bortezomib*
;
Cell Death
;
Endoplasmic Reticulum
;
Homeostasis
;
Humans
;
Mitochondria
;
Proteasome Inhibitors
;
Up-Regulation
5.Clinical Outcomes in Patients with Triple-negative Breast Cancer and Brain Metastases.
Hyuk Chan KWON ; Sung Yong OH ; Sung Hyun KIM ; Suee LEE ; Kyung A KWON ; Ji Hyun LEE ; Mi Ri LEE ; Se Heon CHO ; Young Jin CHOI ; Hyo Jin KIM
Journal of Breast Cancer 2010;13(2):160-166
PURPOSE: Patients with triple-negative breast cancer (TNBC) are known to carry an increased risk of distant metastasis and poor survival. The principal objective of this study was to investigate survival after brain metastases in patients with TNBC. METHODS: The authors retrospectively evaluated clinical data obtained from 66 patients who had been diagnosed with breast cancer and brain metastasis from 2003 to 2009. Estrogen receptor (ER), progesterone receptor (PR), and human epidermal growth receptor-2 (HER2) statuses were determined via immunohistochemical staining. TNBCs were defined as those that were ER-negative, PR-negative, and HER2-negative. The time interval from initial diagnosis to brain metastasis and overall survival after brain metastasis was evaluated via the Kaplan-Meier method. RESULTS: Twenty four (40.0%) of 60 patients were diagnosed with TNBC. The clinicopathologic characteristics did not differ between the TNBC and non-TNBC patients. The disease-free survival durations of the TNBC and non-TNBC subjects were 17.9 and 25.6 months, respectively (p=0.135). The time intervals from initial diagnosis to brain metastasis were 25.5 and 43.7 months, respectively (p=0.027). The time intervals from distant metastasis to brain metastasis were 8.4 and 19.5 months, respectively (p=0.006). Overall survival durations from brain metastasis to death were 4.3 and 7.6 months, respectively (p=0.046). CONCLUSION: Patients with TNBC were more likely to develop brain metastasis earlier, and exhibit poor overall survival. Triple receptor status may be utilized as a prognostic marker for breast cancer patients with brain metastasis.
Brain
;
Breast
;
Breast Neoplasms
;
Disease-Free Survival
;
Estrogens
;
Humans
;
Neoplasm Metastasis
;
Receptors, Progesterone
;
Retrospective Studies
6.A Survey on the Difference in Perceptions on Educational Need in Patients with Epilepsy and Medical Personnel.
Mi Ri CHOI ; Yeon Hee KIM ; Yeon Ja SO ; Sun Moo YUN ; Guen Suk LEE ; Sang Sun LEEM ; Geum Sun KIM ; S Mi CHOI-KWON
Journal of Korean Academy of Nursing 2000;30(6):1400-1410
PURPOSE: To determine whether there is a discrepancy between the medical professions perception of what patients should know and that of the patients themselves, we studied patients need to be informed about different aspects of epilepsy and compared findings with medical personnels perceptions of the issue. METHODS: Our study population consisted of 39 patients with epilepsy from the inpatient epilepsy unit, and 51patients from the outpatients clinic of the S. University Hospital between July and November 1997. However, the patients who declined to participate or who were not able to understand the directions and content of the questionnaire were excluded. The medical personnel participated in this study were 56 residents or nurses who were working in either Neurology or Neuro surgery Units. The questionnaire consisted of 6 categories with a total of 79 questions. The responses were indicated on a 5point Likert scale with 5 indicating the highest need . The data were analyzed with descriptive statistics, students t-tests, and chi-square. RESULTS: Of the 90 patients and 56 medical personnel studied, the need for lifestyle information such as smoking, drinking, sleep, driving, employment, and marriage was significantly higher from medical personnel than that of the patients(p=0.00). Regarding medical knowledge about epilepsy, the patients group had higher scores in the need for information on the structure of the brain (p=0.00), whereas medical personnel had higher scores on the symptoms of epilepsy. There was no correlation between the length of epilepsy and the need for information on every item on the questionnaire. The patients had higher rank regarding diet, although it was not significantly different from the medical personnel. Regarding antiepileptic drugs and what to do when there is an attack, medical personnel scored higher. The items on which the patients group scored higher than 4.5 were the possibility of inheritance, the factors that might reduce the number of attacks, the period of usage of AED, and the food they have to avoid or the food they have to take to reduce seizure attacks. CONCLUSIONS: Our study indicates that the patients group requires higher educational need in the structure of the brain, diet, and surgical treatment, but less in lifestyles and what to do when there is an attack. The educational program for the patients with epilepsy should emphasize medical knowledge with regard to brain anatomy, what to eat and what to avoid, and details of surgical treatment.
Anticonvulsants
;
Brain
;
Diet
;
Drinking
;
Employment
;
Epilepsy*
;
Humans
;
Inpatients
;
Life Style
;
Marriage
;
Neurology
;
Outpatients
;
Surveys and Questionnaires
;
Seizures
;
Smoke
;
Smoking
;
Wills
7.A Case of Idiopathic Myelofibrosis Associated with Acromegaly Patient.
Jun Young SONG ; Pyoung Rak CHOI ; Hong Jun YOU ; Seong Hoon SHIN ; Yu Ri KIM ; Young Sik CHOI ; Yo Han PARK ; Mi Hyang KIM ; Bong Kwon CHUN ; Young Duk JOH
Journal of Korean Society of Endocrinology 2006;21(4):328-332
Acromegaly is a chronic condition resulting from the excessive secretion of growth hormone and insulin like growth factor 1, generally from pituitary adenoma. Although there have been several reports suggesting the possible association of hematologic malignancies with acromegaly, myelofibrosis with acromegaly is very rare. Here we report 54-year-old male patient with myelofibrosis accompanied with acromegaly. We treated this patient with low dose thalidomide (50 mg/day) and prednisone (30 mg/day). We reported this case with literature review.
Acromegaly*
;
Growth Hormone
;
Hematologic Neoplasms
;
Humans
;
Insulin
;
Male
;
Middle Aged
;
Pituitary Neoplasms
;
Prednisone
;
Primary Myelofibrosis*
;
Thalidomide
8.A Case of Idiopathic Myelofibrosis Associated with Acromegaly Patient.
Jun Young SONG ; Pyoung Rak CHOI ; Hong Jun YOU ; Seong Hoon SHIN ; Yu Ri KIM ; Young Sik CHOI ; Yo Han PARK ; Mi Hyang KIM ; Bong Kwon CHUN ; Young Duk JOH
Journal of Korean Society of Endocrinology 2006;21(4):328-332
Acromegaly is a chronic condition resulting from the excessive secretion of growth hormone and insulin like growth factor 1, generally from pituitary adenoma. Although there have been several reports suggesting the possible association of hematologic malignancies with acromegaly, myelofibrosis with acromegaly is very rare. Here we report 54-year-old male patient with myelofibrosis accompanied with acromegaly. We treated this patient with low dose thalidomide (50 mg/day) and prednisone (30 mg/day). We reported this case with literature review.
Acromegaly*
;
Growth Hormone
;
Hematologic Neoplasms
;
Humans
;
Insulin
;
Male
;
Middle Aged
;
Pituitary Neoplasms
;
Prednisone
;
Primary Myelofibrosis*
;
Thalidomide
9.Production and characterization of HPV16 recombinant capsid protein L2 in E.coli.
Joo Hyun KANG ; Young Hee LEE ; Mi Ri YOON ; Hee Shick YN ; Dur Han KWON ; Yong Kyung CHOE ; Soon Hee PARK ; In Seong CHOE ; Roh Pal CHUNG ; Tai Wha CHUNG ; Kyung Soo HAHM
Journal of the Korean Society of Virology 1993;23(2):223-231
No abstract available.
Capsid Proteins*
;
Capsid*
10.Lung Infarction due to Pulmonary Vein Stenosis after Ablation Therapy for Atrial Fibrillation Misdiagnosed as Organizing Pneumonia: Sequential Changes on CT in Two Cases.
Mi Ri KWON ; Ho Yun LEE ; Jong Ho CHO ; Sang Won UM
Korean Journal of Radiology 2015;16(4):942-946
Pulmonary vein (PV) stenosis is a complication of ablation therapy for arrhythmias. We report two cases with chronic lung parenchymal abnormalities showing no improvement and waxing and waning features, which were initially diagnosed as nonspecific pneumonias, and finally confirmed as PV stenosis. When a patient presents for nonspecific respiratory symptoms without evidence of infection after ablation therapy and image findings show chronic and repetitive parenchymal abnormalities confined in localized portion, the possibility of PV stenosis should be considered.
Atrial Fibrillation/surgery
;
Catheter Ablation/*adverse effects/methods
;
Constriction, Pathologic/diagnosis/*radiography
;
*Diagnostic Errors
;
Female
;
Humans
;
Lung/surgery
;
Male
;
Middle Aged
;
Pneumonia/diagnosis
;
Pulmonary Infarction/pathology/*radiography
;
Pulmonary Veins/physiopathology/radiography
;
Tomography, X-Ray Computed/adverse effects
;
Vascular Diseases/physiopathology