1.Plasmid Patterns end in Vitro Susceptibility of Neisseria Gonorrhoeae in Taegu.
Bup Wan KIM ; Duk Youn KIM ; Sae Kook CHANG ; Dong Taek CHO
Korean Journal of Urology 1989;30(5):722-726
Total 352 materials were obtained from the endocervix of prostitutes residing in Taegu area and 22 cases N, gonorrhoeae were isolated through T-M media culture, oxidase test, carbohydrate degradation test, Gram stain. Following results were obtained : 1. Among 22 isolates, 8 strains showed positive reaction to beta-lactamase test (36.4%). 2. Antimicrobial susceptibility test showed different MIC ranges between PPNG and non-PPNG group to penicillin, ampicillin. But, cephalosporins, quinolone derivatives showed similar MIC range between the PPNG and non-PPNG group. 3. MRH test which was available to detect pili of uropathic E, coli was not useful to evaluate adherence of N. gonorrhoeae. 4. In electrophoregram, 14 strains represented 2.6 megadalton cryptic plasmid and 2 strains of PPNG had both 4.5 and 3.2 megadalton plasmids. Therefore, further study is needed for demonstration of concurrent expression of both type (Asia and Africa) of plasmids.
Ampicillin
;
beta-Lactamases
;
Cephalosporins
;
Daegu*
;
Humans
;
Neisseria gonorrhoeae*
;
Neisseria*
;
Oxidoreductases
;
Penicillins
;
Plasmids*
;
Sex Workers
2.A Comparison of Outcomes In Surgical Repair of Varicocele.
Eun Suck LEE ; Jae Shin PARK ; Kap Byung KIM ; Duk Youn KIM ; Chang Woo SEO ; Hyun Min CHO
Korean Journal of Urology 2000;41(2):281-286
No abstract available.
Varicocele*
3.Menin represses JunD transcriptional activity in protein kinase Ctheta-mediated Nur77 expression.
Hyungsoo KIM ; Ji Eun LEE ; Bu Yeon KIM ; Eun Jung CHO ; Seong Tae KIM ; Hong Duk YOUN
Experimental & Molecular Medicine 2005;37(5):466-475
TCR signaling leading to thymocyte apoptosis is mediated through the expression of the Nur77 family of orphan nuclear receptors. It has been shown that the Nur77 promoter is activated by at least two signaling pathways, one mediated by calcium and the other by protein kinase C (PKC). MEF2D has been known to regulate Nur77 expression in a calcium- dependent manner. The mechanism by which calcium regulates MEF2D is through dissociation of calcium-sensitive MEF2 corepressors (Cabin1/ HDACs, HDAC4/5) and the association with calcineurin-activated transcription factor NF-AT and the coactivator p300. However, little is known about how PKC activates the Nur77 promoter. Herein, we report that PKC theta targets AP-1 like response element in the Nur77 promoter where JunD constitutively binds. PKC theta triggers mitogen-activated protein kinase- inediated phosphorylation of JunD, and increases transcriptional activity of JunD, cooperatively with p300. Menin is identified as the transcriptional corepressor for JunD via recruitment of mSin3-istone deacetylases. In fact, Menin represses PKC theta/ p300-mediated transcriptional activity of JunD in T cell. Its dynamic regulation of histone modifiers with JunD is responsible for PKCq-synergistic effect on Nur77 expression in T cell.
Cell Line, Tumor
;
DNA-Binding Proteins/*genetics
;
Enzyme Activation
;
*Gene Expression Regulation
;
Humans
;
Isoenzymes/*metabolism
;
Mitogen-Activated Protein Kinases/metabolism
;
*Multiple Endocrine Neoplasia Type 1
;
Promoter Regions (Genetics)/genetics
;
Protein Kinase C/*metabolism
;
Proto-Oncogene Proteins/genetics/*metabolism
;
Proto-Oncogene Proteins c-jun/*antagonists & inhibitors/metabolism
;
Receptors, Cytoplasmic and Nuclear/*genetics
;
Receptors, Steroid/*genetics
;
Research Support, Non-U.S. Gov't
;
Response Elements
;
Transcription Factors/*genetics
;
Transcription, Genetic/*genetics
4.Anesthetic Consideration in Emergency Cesarean Section .
Youn Sook OH ; Myung Duk CHO ; Kyung Duck HAN ; Guie Yong LEE ; Choon Hi LEE
Korean Journal of Anesthesiology 1983;16(3):232-238
The authors analyzed statistically, 2,290 cases of anesthesia for emergency Cesarean section perfomed at Ewha Womans University Hospital from January 1978 to December 1982. The results are as follows: 1) The incidence of emergency Ceaarean section was 73.8% of total Cesarean sections. 2) The most common indication was CPD(41.4%). 3) The most common gestational age group was 38-42 weeks(85.2%). 4) In NPO time, general anesthesia was twice in more than 6 hours, but spinal anesthesia was twice in less than 6 hours. 5) General anesthesia was increaaed but spinal anesthesia was decreased during the five year period. 6) In estimated blood loss, less than 1,000 ml was 80.0%. 7) Neonates with poor Apgar score (0-3 point) were 5.9% which related to prolonged induction-delivery time and general anesthesia. 8) A drop in blood pressure developed within 5 minutes in 58.3% after spinal anesthesia.
Anesthesia
;
Anesthesia, General
;
Anesthesia, Spinal
;
Apgar Score
;
Blood Pressure
;
Cesarean Section*
;
Emergencies*
;
Female
;
Gestational Age
;
Humans
;
Incidence
;
Infant, Newborn
;
Pregnancy
5.The Validity and Reliability of Addiction Severity Index in Alcoholic Patients.
Duk Ki LEE ; Woo Suk JANG ; Seok Gu SEOL ; Suk Ja YOUN ; Jin Seok CHO ; Won Tan BYUN
Journal of Korean Neuropsychiatric Association 1997;36(6):1033-1040
OBJECTIVE: The purpose of this study was to evaluate the validity and reliability of Korean version of Addiction Severity Index for the systematic diagnosis and evaluation of alcoholism. METHODS: The authors selected 65 alcoholic patients with the criteria of DSM-VI. RESULTS: The results were as follows: 1) The exception of the significant correlation between psychiatric and the family/social problem area, the 6 sections of ASI were mutually independent. 2) There was significant inter-rater reliability in all sections of ASI. 3) In medical, alcohol use, family/social and psychiatry section, the calculation of composite score showed reasonable level of item consistency. In all sections, there was significant correlation between composite scores and severity ratings of corresponding section. 4) The important items of each section were most highly correlated with their corresponding severity ratings except two sections. 5) In the multiple regression analysis, the amount of variance accounted far by the most important 4 items were 83% in medical section, 45% in employment/support,43% in alcohol use section, 55% in legal section,53% in family/social section and 84% in psychiatric section. 6) Severity rating of psychiatric section was significantly correlated with the scores of MMFI, MAST and SCL-90-R. CONCLUSION: The result suggests that Korean version of the ASI showed relatively reasonable reliability and validity and it can be used in treatment and study of alcoholic patients.
Alcoholics*
;
Alcoholism
;
Diagnosis
;
Humans
;
Reproducibility of Results*
6.CNS innervation of the urinary bladder demonstrated by immunohistochemical study for c-fos and pseudorabies virus.
Mae Ja PARK ; Ji Youn KIM ; Yong Chul BAE ; Byung Woo SON ; Yoon Kyu PARK ; Bong Hee LEE ; Kyung Je CHO ; Duk Yoon KIM ; Eon Gi SUNG ; Young Wook YOON
Journal of Korean Medical Science 1997;12(4):340-352
The aim of the present study is to verify the functional and anatomical neural pathways which innervate the urinary bladder in the central nervous system of the rat. To identify the functional neural pathway, the urinary bladder was stimulated by infusing formalin for 2 h. Then, brain and spinal cord were dissected out and immunohistochemistry was done by using anti-c-fos antibody. Many c-fos immunoreactive (IR) neurons were identified in the telencephalic cortical areas and in several brainstem nuclei, which are known mostly to be related with urinary bladder. In the spinal cord, a number of c-fos IR neurons were found in the lamina I, IIo, dorsal gray commissure, sacral parasympathetic nucleus. To identify the anatomical neural pathway of the urinary bladder, Pseudorabies virus (PRV) was injected into the wall of urinary bladder and was identified with anti-PRV by using immunohistochemistry. Most PRV labeled neurons were found where c-fos IR neurons were identified and few of them were also in the areas where c-fos IR neurons were not found, e.g., prefrontal cortex, agranular insular cortex, and subfornical organ. In the spinal cord, PRV labeled cells were found all over the gray matter. The present study presents morphological evidence demonstrating the supraspinal areas are related with the neural control of the urinary bladder and most functional neural pathway of the urinary bladder is well consistent with the anatomical neural pathway except in some telencephalic cortical areas.
Animal
;
Bladder/innervation*
;
Central Nervous System/anatomy & histology*
;
Female
;
Herpesvirus 1, Suid/isolation & purification*
;
Immunohistochemistry
;
Neural Pathways/anatomy & histology
;
Proto-Oncogene Proteins c-fos/analysis*
;
Rats
;
Rats, Sprague-Dawley
7.Down syndrome critical region 1 enhances the proteolytic cleavage of calcineurin.
Ji Eun LEE ; Hyonchol JANG ; Eun Jung CHO ; Hong Duk YOUN
Experimental & Molecular Medicine 2009;41(7):471-477
Down syndrome critical region 1 (DSCR1), an oxidative stress-response gene, interacts with calcineurin and represses its phosphatase activity. Recently it was shown that hydrogen peroxide inactivates calcineurin by proteolytic cleavage. Based on these facts, we investigated whether oxidative stress affects DSCR1-mediated inactivation of calcineurin. We determined that overexpression of DSCR1 leads to increased proteolytic cleavage of calcineurin. Convertsely, knockdown of DSCR1 abolished calcineurin cleavage upon treatment with hydrogen peroxide. The PXIIXT motif in the COOH-terminus of DSCR1 is responsible for both binding and cleavage of calcineurin. The knockdown of overexpressed DSCR1 in DS fibroblast cells also abrogated calcineurin proteolysis by hydrogen peroxide. These results suggest that DSCR1 has the ability to inactivate calcineurin by inducing proteolytic cleavage of calcineurin upon oxidative stress.
Adenoviridae/genetics
;
Adult
;
Animals
;
Calcineurin/antagonists & inhibitors/*metabolism
;
Cells, Cultured
;
Chromatin Immunoprecipitation
;
Down Syndrome/*metabolism/pathology
;
Fibroblasts/metabolism/pathology
;
Humans
;
Hydrogen Peroxide/pharmacology
;
Immunoglobulin G/immunology
;
Intracellular Signaling Peptides and Proteins/*physiology
;
Male
;
Mice
;
Mice, Inbred ICR
;
Muscle Proteins/*physiology
;
Neuroblastoma/genetics/metabolism/pathology
;
Neurons/cytology/metabolism
;
Oxidants/pharmacology
;
Oxidative Stress
;
Peptide Fragments/immunology
;
RNA, Messenger/genetics/metabolism
;
RNA, Small Interfering/pharmacology
;
Rabbits
;
Reverse Transcriptase Polymerase Chain Reaction
;
Skin/pathology
;
Young Adult
8.Pulmonary tuberculosis misdiagnosed as lung Metastasis in childhood cancer patients.
Hyun Jae LEE ; Dong Whan KIM ; Kang Min LEE ; Kyung Duk PARK ; Jun Ah LEE ; Soo Yeon CHO ; Yoon Hoh KOOK ; Hee Youn KIM ; Dong Ho KIM
Korean Journal of Pediatrics 2009;52(8):904-909
PURPOSE: The differential diagnosis for a pulmonary nodule is intriguing in cancer patients. Metastasis might be a preferential diagnosis, and yet possibilities of other medical conditions still exist. Pulmonary tuberculosis should be enlisted in the differential diagnosis for a pulmonary nodule in cancer patients in Korea. This study was aimed at analyzing the incidence and clinical features of pulmonary tuberculosis that were misdiagnosed as pulmonary metastasis during radiologic follow-up in pediatric cancer patients. METHODS: We retrospectively studied 422 cancer patients less than 18 years old in the Korea Cancer Center Hospital from January 2001 to June 2007. We collected episodes of lung metastasis of primary tumor and tuberculosis during treatment or follow-up, and analyzed medical records. RESULTS: There were 5 cases of tuberculosis confirmed after surgery which were initially regarded as cancer. Two patients had respiratory symptoms such as cough and sputum but the other 3 patients did not. One patient had a family history of tuberculosis. Acid-fast M. tuberculosis was found in one case upon tissue specimen analysis. Two cases were Mantoux positive and the sputum examination was negative in all cases. The polymerase chain reaction for tuberculosis on a pathologic specimen was used to differentiate M. tuberculosis from non-tuberculosis mycobacterium (NTM). It was positive in one case. Lung lesions in one case showed a concurrence of tuberculosis along with lung metastasis. One of these patients died after cancer recurrence. CONCLUSION: It is necessary to consider the possibility of tuberculosis when a lung mass is newly detected during treatment or follow-up in patients with childhood cancer.
Cough
;
Diagnosis, Differential
;
Follow-Up Studies
;
Humans
;
Incidence
;
Korea
;
Lung
;
Medical Records
;
Mycobacterium
;
Neoplasm Metastasis
;
Polymerase Chain Reaction
;
Recurrence
;
Retrospective Studies
;
Sputum
;
Tuberculosis
;
Tuberculosis, Pulmonary
9.Mutational Analysis of the Neurofilament Light Chain (NEFL) Gene in Patients with Charcot-Marie-Tooth Disease.
Hyun Ji CHO ; Ki Wha CHUNG ; Il Nam SUNWOO ; Kee Duk PARK ; Dae Sung KIM ; Bum Chun SEO ; Mi Sun LEE ; Eun Kyoung YOUN ; Byung Ok CHOI
Journal of the Korean Neurological Association 2005;23(5):642-649
BACKGROUND: Charcot-Marie-Tooth (CMT) disease is the most common form of inherited motor and sensory neuropathy. Neurofilament light chain polypeptide (NEFL) is one of the most abundant cytoskeletal components of the neuron. The NEFL gene encoding the neurofilament light chain plays an important role in the axonal structure that includes an extensive fibrous network in the cytoplasm of the neuron. Mutations in the NEFL gene are also present in CMT2E, CMT type 1 and Dejerine-Sottas syndrome. However, there have been no reports to investigate the NEFL genes in Korean CMT patients. Therefore, we investigated to find the clinical characteristics in patients with the NEFL gene mutation. METHODS: We examined mutations of the NEFL gene in 125 Korean CMT families. Mutations were confirmed by the sequencing of both strands. Nerve conduction studies were carried out on CMT patients having each mutation. RESULTS: Three pathogenic mutations were found in 3 families, and 2 polymorphisms in 2 families. Two mutations (Leu334Pro, Pro22Arg) were determined too novel, and those were not detected in 105 healthy controls. A de novo missense mutation was found in a CMT family with the NEFL mutation. The frequency of the NEFL mutation was 2.4%, which was similar in Europeans, and lower than those found in Japanese. Pro22Arg and Glu397Lys mutations showed demyelinating neuropathy and Leu334pro mutation showed axonal neuropathy. CONCLUSIONS: We found NEFL mutations in patients with sporadic or dominantly inherited CMT. NEFL mutations should be considered in the evaluation of CMT or related neuropathies with various clinical features.
Asian Continental Ancestry Group
;
Axons
;
Charcot-Marie-Tooth Disease*
;
Cytoplasm
;
Hereditary Sensory and Motor Neuropathy
;
Humans
;
Mutation, Missense
;
Neural Conduction
;
Neurons
10.Nur77 upregulates HIF-alpha by inhibiting pVHL-mediated degradation.
Bu Yeon KIM ; Hyungsoo KIM ; Eun Jung CHO ; Hong Duk YOUN
Experimental & Molecular Medicine 2008;40(1):71-83
In this study, we investigated the role of Nur77, an orphan nuclear receptor, in HIF-alpha transcriptional activity. We found that Nur77 associates and stabilizes HIF-1alpha via indirect interaction. Nur77 was found to interact with pVHL in vivo via the alpha-domain of pVHL. By binding to pVHL, Nur77 competed with elongin C for pVHL binding. Moreover, Nur77-binding to pVHL inhibited the pVHL-mediated ubiquitination of HIF-1alpha and ultimately increased the stability and transcriptional activity of HIF-1alpha. The ligand-binding domain of Nur77 was found to interact with pVHL and the expression of this ligand-binding domain was sufficient to stabilize and transactivate HIF-1alpha. Under the conditions that cobalt chloride was treated or pVHL was knocked down, Nur77 could not stabilize HIF-alpha. Moreover, Nur77 could not further stabilize HIF-2alpha in A498/VHL stable cells, which is consistent with our finding that Nur77 indirectly stabilizes HIF-alpha by binding to pVHL. Thus, our results suggest that an orphan nuclear receptor Nur77 binds to pVHL, thereby stabilizes and increases HIF-alpha transcriptional activity under the non- hypoxic conditions.
Animals
;
DNA-Binding Proteins/chemistry/*metabolism
;
Humans
;
Hypoxia-Inducible Factor 1, alpha Subunit/*genetics
;
Models, Biological
;
PC12 Cells
;
Protein Binding
;
*Protein Processing, Post-Translational
;
Protein Structure, Tertiary
;
Rats
;
Receptors, Cytoplasmic and Nuclear/chemistry/*metabolism
;
Receptors, Steroid/chemistry/*metabolism
;
Thermodynamics
;
Transcription Factors/chemistry/*metabolism
;
Transcriptional Activation/genetics
;
Ubiquitination
;
Up-Regulation/*genetics
;
Von Hippel-Lindau Tumor Suppressor Protein/*antagonists & inhibitors/chemistry/*metabolism