1.Protein/creatinine ratio in random urine specimens for quantitation of proteinuria in preeclampsia.
Kyeong Seok JANG ; Sang Yook LEE ; Young Don YOON ; Tae Bok SONG ; Ji Soo BYUN
Korean Journal of Obstetrics and Gynecology 1993;36(7):2147-2151
No abstract available.
Pre-Eclampsia*
;
Proteinuria*
2.A case of pregnancy complicated by ruptured endometrioma.
Young Don YOON ; Hye Won CHUNG ; Tae Bok SONG ; Sang Woo JUHNG ; Ji Soo BYUN
Korean Journal of Perinatology 1993;4(3):428-432
No abstract available.
Endometriosis*
;
Female
;
Pregnancy*
3.Augmentation Cystoplasty using Hydroxapatite/chitosan Composite Sheet Seeded with Autologous Muscle-derived Stem Cells.
Seok Soo BYUN ; Yong Sik CHUNG ; Sang Sub LEE ; Haet Nim LEE ; Ji Young LEE ; Ji Youl LEE
Korean Journal of Urology 2007;48(4):433-438
PURPOSE: This study was designed to investigate the feasibility of a hydroxyapatite/chitosan (HAp/chitosan) composite, seeded with autologous muscle-derived stem cells, as a partial bladder substitute in rats. MATERIALS AND METHODS: Muscle-derived stem cells were isolated from the gastrocnemius muscle of 6 female Sprague-Dawley rats, using the preplate technique, and cultured on HAp/chitosan composite sheets. Sheets with 10mm diameters were implanted into the urinary bladder of rats following a hemicystectomy in an autologous fashion. Three rats were sacrificed 4 and 8 weeks postoperatively, and the morphological changes subsequently assessed by H&E and immunofluorescence staining using DAPI, myogenin and alpha-smooth muscle actin (SMA). RESULTS: All rats survived the scheduled duration. Adequate epithelialization was observed to be completed after postoperative week 4. Abundant muscle bundles, showing positive alpha-SMA staining, were observed after the 4th week. The bladder shape was well preserved after the 8th week. Ingrowing smooth muscles were observed on the periphery of the composite and muscular bundles, with positive myogenin immunostaining in the middle of the composite. CONCLUSIONS: A HAp/chitosan composite sheet, seeded with autologous muscle-derived stem cells, showed a degree of skeletal muscle differentiation 8 weeks after augmentation cystoplasty, in an autologous fashion. This new material seeded with muscle-derived stem cells may, in the future, prove to be a viable option as a partial bladder substitute.
Actins
;
Animals
;
Atrophy
;
Female
;
Fluorescent Antibody Technique
;
Humans
;
Muscle, Skeletal
;
Muscle, Smooth
;
Myogenin
;
Rats
;
Rats, Sprague-Dawley
;
Regeneration
;
Stem Cells*
;
Urinary Bladder
4.The Significance of Serum Thrombopoietin Levels in Cirrhotic Patients with Thrombocytopenia According to Disease Severity.
Jong Eun YEON ; Whee KONG ; Ji Hoon KIM ; Yeon Suk SUH ; Sang Hoon PARK ; Oh Sang KWON ; Kwan Soo BYUN ; Chang Hong LEE
The Korean Journal of Hepatology 1999;5(3):208-216
BACKGROUND/AIMS: Thrombopoietin (TPO) is an important cytokine for megakaryocyte maturation and platelet production. Because the main site of its production is liver, the failing liver may have a role in thrombocytopenia in chronic liver disease. The aims of this study were to determine the serum TPO levels in cirrhotic patients with thrombocytopenia and clarify the relation between the serum TPO levels and liver function impairment. METHOD: Cirrhotic paitents with thrombocytopenia (LC, n=57, Child class A/B/C; 20/13/24), chronic hepatitis patients (CH, n=24), oncologic patients with thrombocytopenia induced by chemotherapy (HO, n=7), acute viral hepatitis patients (AVH, n=5) and healthy controls (HC, n=5) were enrolled. Serum TPO was measured by an ELISA method. RESULTS: Although the mean platelets counts of LC (69+/-32, x103/ul: mean+/-SD) were lower than those of HC (229+/-29, x103/ul), serum TPO levels in LC (108+/-63 pg/ml: mean+/-SD) were not significantly different from HC (122+/-24 pg/ml). In HO, serum TPO was significantly higher than LC (623+/-746 vs 108+/-63 pg/ml, p<0.05) inspite of comparable platelets counts. In LC, serum TPO level was not significantly different among Child class groups. It was not correlated with serum ALT, serum albumin levels, prothrombin time, serum bile acid, Child class, Child score and partial thromboplastin time, but weakly correlated with serum total bilirubin (p=0.038, r=0.288) and platelet counts (p=0.041, r=0.287). CONCLUSIONS: Although impaired hepatic production of TPO seems to be the main cause of low serum TPO levels in thrombocytopenic cirrhotic patients, there was no correlation between serum TPO level and the severity of liver dysfunction. The role of other factors such as megakaryocyte mass in bone marrow, portal hypertension and hypersplenism may be necessary to explain the putative mechanism between TPO and platelet numbers in liver cirrhosis with thrombocytopenia.
Bile
;
Bilirubin
;
Blood Platelets
;
Bone Marrow
;
Child
;
Drug Therapy
;
Enzyme-Linked Immunosorbent Assay
;
Hepatitis
;
Hepatitis, Chronic
;
Humans
;
Hypersplenism
;
Hypertension, Portal
;
Liver
;
Liver Cirrhosis
;
Liver Diseases
;
Megakaryocytes
;
Partial Thromboplastin Time
;
Platelet Count
;
Prothrombin Time
;
Serum Albumin
;
Thrombocytopenia*
;
Thrombopoietin*
5.Fexofenadine-Induced Urticaria.
Sang Woo LEE ; Ji Yeon BYUN ; You Won CHOI ; Ki Bum MYUNG ; Hae Young CHOI
Annals of Dermatology 2011;23(Suppl 3):S329-S332
Fexofenadine (Allegra(R) 180) is a second-generation antihistamine. It is widely used as anti-allergic drug, which suppresses various allergic reactions mediated by histamines. A few cases of H1-antihistamine-induced urticaria have been reported. Herein, we report a rare case of fexofenadine-induced urticaria which was confirmed by a prick test, oral provocation test, and flow cytometry assisted-basophil activation test.
Basophil Degranulation Test
;
Flow Cytometry
;
Hypersensitivity
;
Terfenadine
;
Urticaria
6.Failure to Remove a Trochanteric Entry Femoral Nail and Its Cause in Adolescent Patients: Two Cases Report.
Ji Hwan KIM ; Seung Oh NAM ; Young Soo BYUN ; Han Sang KIM
Journal of the Korean Fracture Society 2015;28(1):71-76
Trochanteric entry femoral nails have been widely used for fixation of femoral shaft fractures because of easier identification of the entry point. Young patients usually request removal of the nail after healing of the fracture. We experienced a failure and difficulty in removal of the trochanteric entry nail in two adolescent patients. In the patient in which the nail could be removed with difficulty, dense compact bone was formed through the empty interlocking holes and the nail was held just like a latch. This finding was quite similar to the computed tomography findings of the patient in which the nail could not be removed. In order to remove the nail, the newly formed, dense compact bone in the interlocking holes must be broken and detached from the femur itself. We suggest that dense compact bone through the empty interlocking holes might be a clue for difficult removal of the trochanteric entry nail.
Adolescent*
;
Femur*
;
Humans
7.LRRK2 Inhibits FAK Activity by Promoting FERM-mediated Autoinhibition of FAK and Recruiting the Tyrosine Phosphatase, SHP-2.
Insup CHOI ; Ji won BYUN ; Sang Myun PARK ; Ilo JOU ; Eun Hye JOE
Experimental Neurobiology 2016;25(5):269-276
Mutation of leucine-rich repeat kinase 2 (LRRK2) causes an autosomal dominant and late-onset familial Parkinson's disease (PD). Recently, we reported that LRRK2 directly binds to and phosphorylates the threonine 474 (T474)-containing Thr-X-Arg(Lys) (TXR) motif of focal adhesion kinase (FAK), thereby inhibiting the phosphorylation of FAK at tyrosine (Y) 397 residue (pY397-FAK), which is a marker of its activation. Mechanistically, however, it remained unclear how T474-FAK phosphorylation suppressed FAK activation. Here, we report that T474-FAK phosphorylation could inhibit FAK activation via at least two different mechanisms. First, T474 phosphorylation appears to induce a conformational change of FAK, enabling its N-terminal FERM domain to autoinhibit Y397 phosphorylation. This is supported by the observation that the levels of pY397-FAK were increased by deletion of the FERM domain and/or mutation of the FERM domain to prevent its interaction with the kinase domain of FAK. Second, pT474-FAK appears to recruit SHP-2, which is a phosphatase responsible for dephosphorylating pY397-FAK. We found that mutation of T474 into glutamate (T474E-FAK) to mimic phosphorylation induced more strong interaction with SHP-2 than WT-FAK, and that pharmacological inhibition of SHP-2 with NSC-87877 rescued the level of pY397 in HEK293T cells. These results collectively show that LRRK2 suppresses FAK activation through diverse mechanisms that include the promotion of autoinhibition and/or the recruitment of phosphatases, such as SHP-2.
Focal Adhesion Protein-Tyrosine Kinases
;
Glutamic Acid
;
Parkinson Disease
;
Phosphoric Monoester Hydrolases
;
Phosphorylation
;
Phosphotransferases
;
Protein Tyrosine Phosphatase, Non-Receptor Type 11*
;
Threonine
;
Tyrosine*
8.Outcomes of Critical Pathway in Laparoscopic and Open Surgical Treatments for Gastric Cancer Patients: Patients Selection for Fast-Track Program through Retrospective Analysis.
Ji Woo CHOI ; Yi XUAN ; Hoon HUR ; Cheul Su BYUN ; Sang Uk HAN ; Yong Kwan CHO
Journal of Gastric Cancer 2013;13(2):98-105
PURPOSE: The aim of this study is to investigate the clinical factors affecting on the cure rate by invasive and open surgery for gastric cancer and to establish a subgroup of patients who can be applied by the early recovery after surgery program through this retrospective analysis. MATERIALS AND METHODS: In this retrospective study, we analyzed 425 patients who underwent gastric cancer surgery between January 2011 and December 2011 and were managed with conventional clinical therapies. This clinical algorithm was made when the patient was in minimally invasive surgery group and discharged from hospital one day faster than them in open surgery group. RESULTS: The completion rate of the clinical pathway was 62.4%. Despite the different applications of clinical pathway, completion rate in minimally invasive surgery group was significantly higher than that of open group (P<0.001). In multivariate analysis, the surgical procedure of minimally invasive surgery (odds ratio=4.281) was the most predictable factor to complete clinical pathway. Additionally, younger patients (odds ratio=1.933) who underwent distal gastrectomy (odds ratio=1.999) without combined resection (odds ratio=3.069) were predicted to accomplish the clinical pathway without any modifications. CONCLUSIONS: We concluded that high efficacy of the clinical pathway for gastric cancer surgery was expected to selected patients through retrospective analysis (expected completion rate=85.4%). In addition, these patients would become enrolled criteria for early recovery program in gastric cancer surgery.
Critical Pathways
;
Gastrectomy
;
Humans
;
Multivariate Analysis
;
Retrospective Studies
;
Stomach Neoplasms
9.Difference of the Heart Rate Variability According to the Social Support Level in a County.
Yoo Shup SHIN ; Ji Sang BYUN ; Seok Hyeon KIM ; Jin Ho SHIN ; Bo Youl CHOI ; Jung Hyun NAM ; Dong Hoon OH
Korean Journal of Psychosomatic Medicine 2012;20(1):59-65
OBJECTIVES: The present study takes part of the agricultural district cohort study of a certain county located in Gyeonggido and aims to investigate the difference of the heart rate variability(HRV) according to the social support level. METHODS: We used data from 1727 participants of a health promotion program who are older than 40 years old. A physical examination, as well as a one-to-one interview to obtain sociodemographic characteristics, was performed with each participant. In addition, the participants completed the Medical Outcomes Study-Social Support Survey(MOS-SSS) for their the social support level to be assessed, and their HRV were measured to evaluate their autonomic function. The entire group was divided in two groups according to its MOS-SSS points to facilitate the research. Those who were evaluated as the high 25%(432 persons) were denominated as high social support (HSS) group and those who were evaluated as the low 25%(425 persons) were denominated as poor social support(PSS) group. RESULTS: The two groups showed significant differences on the sociodemographic factor such as mean age and gender composition(p<0.05). Comparing the indices related to the HRV, the HSS group had the following values higher than the PSS group : SDNN(F=4.938, p=0.027), TP(F=8.088, p=0.005), VLF(F=6.220, p=0.013) LF (F=3.873, p=0.049). CONCLUSION: According to the research, the PSS group showed dysfunction on their autonomic nervous system comparing to the HSS group. The social support helps an individual overcome difficulties, helps the adaptation during the changes of circumstances and in stressful situations it serves like a buffer. Based on that, it's possible to define that a low social support level gave an impact on the autonomic function. Also, using the fact that the HRV can evaluate the autonomic function in an objective view, it was possible to visualize that it has a potential to be used as an assistant factor to evaluate the social support.
Autonomic Nervous System
;
Cohort Studies
;
Health Promotion
;
Heart
;
Heart Rate
;
Physical Examination