1.Molecular genetic analysis of non-transferable antimicrobial resistance of shigella isolates.
Sung Yong SEOL ; Young Chul KWON ; Je Chul LEE ; Yoo Chul LEE ; Dong Taek CHO
Journal of the Korean Society for Microbiology 1992;27(2):125-141
No abstract available.
Molecular Biology*
;
Shigella*
2.Angioedema-like facial swelling as a first manifestation of systemic lupus erythematosus.
O Yeong KWON ; Chang Hee SEO ; Sung Taek JUNG ; Dong Ho NAHM ; Hae Sim PARK
Journal of Asthma, Allergy and Clinical Immunology 1998;18(1):90-95
Angioedma is a group of disorders with multifactorial etiology but a similar clinical expression, is characterized by swelling of subcutaneous or submucosal tissue. Systemic lupus erythematosus(SLE) is a chronic multi-systemtic disease characterized by inflammation and tissue damage resulting from deposition of auto-antibodies and immune complex. We experienced a case of angioedema which was the first manifestation of SLE in 24-year-old female patient. She had suffered from severe facial edema and multiple lymphadenopathy for six months and she also had pleural effusion, positive anti-nuclear and anti-DNA antibody test. Marked decrease of C3 and C4 levels was noted with normal antigenic level, and activity of Cl esterase inhibitor. The angioedema was not improved with anti-hitamine agents and instead disappeared with use of corticosteroid and non-steroidal anti-inflammatory drugs. Complement levels normalized after corticosteroid treament. We report a case of SLE which initial manifestation was angioedema.
Angioedema
;
Antigen-Antibody Complex
;
Complement System Proteins
;
Edema
;
Female
;
Humans
;
Inflammation
;
Lupus Erythematosus, Systemic*
;
Lymphatic Diseases
;
Pleural Effusion
;
Young Adult
3.Magnetic Resonance Imaging on Postoperative Pain Syndrome.
June Kyu LEE ; Jae Sung AHN ; Je Taek JEONG ; Soon Tae KWON ; Whan Jeung KIM
The Journal of the Korean Orthopaedic Association 1999;34(1):127-133
PURPOSE: To determine the accuracy of MRI on postoperative pain syndrome (POPS), including early complications such as hematoma or infection. MATERIALS AND METHODS: Of the 54 patients with the POPS, we analyzed pre-operative MRI findings compared with operative findings on 39 patients, excluding nonunion, instability, metal failure and pseudarthrosis, who underwent an operation for POPS from December 1994 to June 1997. There were 25 men (64.1%) and 14 women (35.9%), aged from 16 to 68 years (average 44.5 years). They were divided into 5 subgroups and calculated for sensitivity, specificity and positive predictability. RESULTS: MRI accuracy in recurred disc was 84%, scar adhesion, recurred or developed stenosis, infection and hematoma was 100% for each overall accuracy of MRI was 93%. Average interval of reoperation in POPS was 3.2 years. In 21 cases (53.8%), symptoms persisted without pain-free interval after first operation. CONCLUSIONS: Early complications, including hematoma and infection, are easily detected with MRI. Especially if patient complains of severe leg pain or neurologic deficit, MRI is a good diagnostic tool. MRI is a useful method for evaluation of most cases of POPS, but it is limited in evaluating recurred disc or scar adhesion only in T1, T2 weighted image. Therefore, Gd-DTPA enhancement is necessary for an accurate diagnosis.
Cicatrix
;
Constriction, Pathologic
;
Diagnosis
;
Female
;
Gadolinium DTPA
;
Hematoma
;
Humans
;
Leg
;
Magnetic Resonance Imaging*
;
Male
;
Neurologic Manifestations
;
Pain, Postoperative*
;
Pseudarthrosis
;
Reoperation
;
Sensitivity and Specificity
4.Effects of the Sanjoin on the Rat Brain: Focused on Serotonin, Sleeping Time, Sleep EEG and Autonomic Activity.
Hee Yeon JEONG ; Young Joon KWON ; In Joon PARK ; Joon Taek KWON ; Byung Hoon HAN ; Sung Pil LEE
Journal of the Korean Society of Biological Psychiatry 1997;4(1):54-59
OBJECTS: Sanjoin, the seeds of Zizyphus vulgaris var. spinosus has been used as the most important hypnotic agent in chinese medicine to treat insomnia. This research was performed in order to examine the effect of betulinic acid and sanjoinine-A which are components of Sanjoin. METHOD: Sleeping time, sleep recordings of EEG, serum serotonin level, and locomotor activity were measured in rats which received betulinic acid and sanjoinine-A as sleep induction material extracted from Sanjoin. RESULTS: 1) Groups received betulinic acid, sanjoinine-A, and lorazepam showed increased sleep time than control group with saline. 2) Groups with betulinic acid, sanjoinine-A, lorazepam and saline recorded beta-wave in sleep recording of EEG. In there was no significant difference among all groups. 3) No significant difference in serum serotonin level among all groups was found. 4) In autonomic activity testing, groups of betulinic acid, sanjoinine-A, and lorazepam showed significantly more decreased in activity than saline group. In comparison of groups of betulinic acid and sanjoinine-A with a group of lorazepam, there was no significant difference. CONCLUSION: These results suggests that betulinic acid and sanjoinine-A have the sedative effect like lorazepam rather than sleep effect.
Animals
;
Asian Continental Ancestry Group
;
Brain*
;
Electroencephalography*
;
Humans
;
Hypnotics and Sedatives
;
Lorazepam
;
Motor Activity
;
Rats*
;
Serotonin*
;
Sleep Initiation and Maintenance Disorders
;
Ziziphus
5.Novel Methods of Lymph Node Evaluation for Predicting the Prognosis of Colorectal Cancer Patients with Inadequate Lymph Node Harvest.
Taek Soo KWON ; Sung Bong CHOI ; Yoon Suk LEE ; Jun Gi KIM ; Seong Taek OH ; In Kyu LEE
Cancer Research and Treatment 2016;48(1):216-224
PURPOSE: Lymph node metastasis is an important factor for predicting the prognosis of colorectal cancer patients. However, approximately 60% of patients do not receive adequate lymph node evaluation (less than 12 lymph nodes). In this study, we identified a more effective tool for predicting the prognosis of patients who received inadequate lymph node evaluation. MATERIALS AND METHODS: The number of metastatic lymph nodes, total number of lymph nodes examined, number of negative metastatic lymph nodes (NL), lymph node ratio (LR), and the number of apical lymph nodes (APL) were examined, and the prognostic impact of these parameters was examined in patients with colorectal cancer who underwent surgery from January 2004 to December 2011. In total, 806 people were analyzed retrospectively. RESULTS: In comparison of different lymph node analysis methods for rectal cancer patients who did not receive adequate lymph node dissection, the LR showed a significant difference in overall survival (OS) and the APL predicted a significant difference in disease-free survival (DFS). In the case of colon cancer patients who did not receive adequate lymph node dissection, LR predicted a significant difference in DFS and OS, and the APL predicted a significant difference in DFS. CONCLUSION: If patients did not receive adequate lymph node evaluation, the LR and NL were useful parameters to complement N stage for predicting OS in colon cancer, whereas LR was complementary for rectal cancer. The APL could be used for prediction of DFS in all patients.
Colonic Neoplasms
;
Colorectal Neoplasms*
;
Complement System Proteins
;
Disease-Free Survival
;
Humans
;
Lymph Node Excision
;
Lymph Nodes*
;
Methods*
;
Neoplasm Metastasis
;
Prognosis*
;
Rectal Neoplasms
;
Retrospective Studies
6.Outer Retinal Tubulation in Chronic Central Serous Chorioretinopathy.
Sung YU ; Jin Seon KIM ; Soo Hyun KWON ; In Taek KIM
Journal of the Korean Ophthalmological Society 2014;55(11):1642-1650
PURPOSE: To evaluate outer retinal tubulation (ORT) found in chronic central serous chorioretinopathy (CSC) using color fundus photography and spectral domain optical coherence tomography (SD-OCT). METHODS: ORT identified in patients with chronic CSC was examined using color fundus photography, fundus autofluorescence image, fluorescein angiography, indocyanin green angiography, and SD-OCT. The images were analyzed for morphological features, location, and size of ORT in the retinal layers. RESULTS: ORT was detected in 3 of 342 (0.88%) chronic CSC patients. Color fundus photography revealed circular or ovoid shape with hollow lumen and deep yellowish border mainly appearing at the affected retinal pigment epithelium layer in the macular area. SD-OCT B-scan revealed hyperreflective material observed inside the hyporeflective internal space with hyperreflective border. ORT had circular or ovoid shape on the SD-OCT C-scan. ORT was primarily located on the outer nuclear layer in the retina, emanating to the inner nuclear layer and was not greater than 170 x 170 microm in size when measured with SD-OCT B-scan image. CONCLUSIONS: ORT was identified in patients with chronic CSC which was observed using color fundus photography and circular or ovoid structure was observed using a SD-OCT C-scan.
Angiography
;
Central Serous Chorioretinopathy*
;
Fluorescein Angiography
;
Humans
;
Photography
;
Retina
;
Retinal Pigment Epithelium
;
Retinaldehyde*
;
Tomography, Optical Coherence
7.Induction versus expectant management in premature rupture of membranes at 34 to 37 weeks' gestation.
Joo Taek KWON ; Ho Myung HWANG ; Jong Hyun KIM ; Mi Ok NA ; Chul EUM ; Young Joo JUNG ; Sung Nam JO
Korean Journal of Obstetrics and Gynecology 2000;43(12):2135-2139
No abstract available.
Membranes*
;
Pregnancy*
;
Rupture*
8.Giant Internal Carotid Artery Aneurysm:Posterior Cerebral Artery Territory Infarction After Ligation of the Right Internal Carotid Artery: Case Report.
Jung Taek KWON ; Sung Nam HWANG ; Kwan PARK ; Duck Young CHOI
Journal of Korean Neurosurgical Society 1993;22(8):929-933
A 62-year-old woman, who presented with dipolipia, was found to have a giant aneurysm of the right internal carotid artery. Gradual ligation of the right internal carotid artery was followed by nausea and vomiting 10 days after the complete ligation. Follow up MRI showed intraluminal thrombus formation of the aneurysm and right temporo-occipital infarction.
Aneurysm
;
Carotid Artery, Internal*
;
Cerebral Arteries*
;
Cerebral Infarction
;
Female
;
Follow-Up Studies
;
Humans
;
Infarction*
;
Ligation*
;
Magnetic Resonance Imaging
;
Middle Aged
;
Nausea
;
Thrombosis
;
Vomiting
9.A Case of Congeital Occipital Dermoid Cyst.
Jung Taek KWON ; Young Baeg KIM ; Sung Nam HWANG ; Duck Young CHOI
Journal of Korean Neurosurgical Society 1991;20(8):699-703
A 18-year-old girl, who presented with painful scalp mass on occipital region, was found in have a congential dermal sinus. At surgery, upon incision of the occipital muscle fascia, pus poket was encountered and it was connected with thickened occipito-cervical dura through the small foramen on midline occiptial bone. The pathogenesis and principles of management are briefly reviewed.
Adolescent
;
Dermoid Cyst*
;
Fascia
;
Female
;
Humans
;
Scalp
;
Spina Bifida Occulta
;
Suppuration
10.Implant stability evaluation according to the bone condition, fixture diameter and shape in the osseointegration simulated resin model.
Taek Ka KWON ; In Sung YEO ; Sung Hun KIM ; Jung Suk HAN ; Jai Bong LEE ; Jae Ho YANG
The Journal of Korean Academy of Prosthodontics 2011;49(2):128-137
PURPOSE: Resonance frequency analysis, Periotest, and removal torque (RT) test were known as the methods to assess implant stability. The results of these methods are affected by the bone condition, implant diameter and shape. The purpose of this study is to access the meaning and the correlationship of the resonance frequency analysis, Periotest and RT test in osseointegration simulated acrylic resin when the engaged bone thickness and peri-implant bone defect are changed. MATERIALS AND METHODS: To simulate osseointegration, the fixture was fixed to an aluminum mold with a screw. Acrylic resin powder and liquid were poured into the mold for polymerization. The engaged resin thickness with implant was controlled. Simulated cortical bone thicknesses were 1, 3, 5 and 10 mm. Additional 1, 3 and 5 mm peri-implant bone defects were simulated. Three types of implants were used; 4 mm diameter implants of straight shape, 4 mm diameter implants of tapered shape and 5 mm diameter implants of tapered shape. Five fixtures per each type were tested in respective bone condition. Resonance frequency analysis and Periotest were evaluated in all bone conditions. Peak removal torque was measured at simulated cortical bone thicknesses of 1 and 3 mm. The statistical analysis was performed with the Kruskal-Wallis test, Mann-Whitney U test, and Spearman test using a 95% level of confidence. RESULTS: With increasing engaged bone depth, the Implant Stability Quotient (ISQ) values increased and the Periotest values (PTVs) decreased (P<.001, P<.001). With increasing peri-implant bone defect, ISQ values decreased and PTVs increased (P<.001). When the diameter of implant increased, ISQ values increased and Periotest values (PTV) decreased (P<.001). There was a strong correlation between ISQ values and PTVs (r = -0.99, P<.001). Furthermore, the peak removal torque values had weak correlations with both ISQ values and PTVs (r = 0.52, P<.001 ; r = -0.52, P<.001). CONCLUSION: This study confirmed favorable implant stability with increasing engaged bone depth and implant diameter and decreasing peri-implant bone defect. ISQ values and PTVs showed strong correlation with each other and not with the peak removal torque values.
Aluminum
;
Fungi
;
Osseointegration
;
Polymerization
;
Polymers
;
Torque