1.A Case of Multiple Tubular Apocrine Adenoma.
Min Young YOU ; Seok Kweon YUN ; Chull Wan IHM
Korean Journal of Dermatology 2000;38(5):659-663
No Abstract Available.
Adenoma*
2.A Case of 4P-Syndrome.
Hong Kyu LEE ; Sung Sik LEE ; Soon Il LEE ; Young Seok LEE ; Kweon Ha SON
Journal of the Korean Pediatric Society 1988;31(10):1366-1370
No abstract available.
3.Long-term Outcome of Polished Stems in Total Hip Arthroplasty.
Jin Young PARK ; Hong Joon HAN ; Seok Jong BAIK ; Suc Hyun KWEON
Hip & Pelvis 2015;27(2):83-89
PURPOSE: The purpose of this study was to evaluate the clinical outcomes and radiologic findings of primary total hip arthroplasty (THA) using cemented polished femoral stems. MATERIALS AND METHODS: We retrospectively reviewed 91 hips (91 patients) that had undergone primary THA with cemented polished femoral stems who were followed for at least 10 years. The mean age at surgery was 57 years (47-75 years). Mean follow up period was 12.8 years (10.1-14.0 years). Harris Hip Score (HHS) was used for clinical evaluation. Radiologic evaluation was focused on cementing technique including subsidence within the cement mantle, radiolucent lines at the cement-bone or cement-stem interface, cortical hypertrophy, and calcar resorption. RESULTS: The average HHS was 55.2 points before the surgery that improved to an average of 93.2 points at the final follow-up. According to Barrack classification, there were 50, 32, and 9 cases in A, B, and C grades, respectively. Subsidence of femoral stem was less than 2 mm except in one patient. There were no progressing radiolucent line or loosening of the femoral stem. CONCLUSION: In this study, THA using cemented polished femoral stems was found to have favorable outcomes in long term follow-up.
Arthroplasty, Replacement, Hip*
;
Classification
;
Follow-Up Studies
;
Hip
;
Humans
;
Hypertrophy
;
Methods
;
Osteolysis
;
Retrospective Studies
4.Cytotoxicity of Capsaicin on Cultured Human Skin Fibroblast.
Seok Kweon YUN ; Jong Keun KIM ; Seong Jin KIM ; Young Ho WON
Korean Journal of Dermatology 2005;43(2):194-203
BACKGROUND: Capsaicin has been shown to have different biologic and toxic effects, depending on non-neuronal cells and several transformed cells, however no study has been reported from cultured human skin fibroblast. OBJECTIVE: Present study was aimed to evaluate the cytotoxicity and its mechanism of capsacin on the cultured human skin fibroblast. MATERIAL AND METHOD: Normal neonatal human fibroblasts were used, and changes of cell survival were measured by MTT assay after the cells were pre-treated with growth factors, receptor antagonist, antioxidants, calcium modulators were pre-treated or co-treated with capsaicin. RESULTS: Suvival of fibroblast was significantly increased by treatment with EGF (10ng/ml), bFGF (10ng/ml), capsazepine (10M) but inhibited by cycloheximide (1g/ml). When 200 M capsaicin was added to fibroblasts, chromatin condensations were observed at 12 hours and cell survival rate was reduced to 25-50% at 24 hours. Vanilloid receptor antagonists, capsazepine and ruthenium red, did not prevent the toxic effect of capsaicin, and 10M capsazepine paradoxically rather enhanced the cytotoxicity. In contrast to bFGF (10ng/ml), EGF (10, 100ng/ml) enhanced the cytotoxicity of capsaicin. Neuropeptides, substance P (1, 10nM) and CGRP (1, 10nM), and a structural analogue to capsaicin, tyrosine (0.3-1.2mM) did not affect the cytotoxicity. However, antioxidants such as trolox (100M) and ascorbic acid (0.1, 0.3 mM) reduced the capsaicin cytotoxicity. Of calcium modulating agents, nifedifine, a Ca2+ channel blocker (10, 20M) and cyclopiazonic acid, a Ca2+-ATPase inhibitor in ER (10M) did not influence the cytotoxicity, however BAPTA/AM (10M) as a chelater for cytoplasmic free calcium ion (10M) significantly decreased capsaicin cytotoxicity. Unlike cycloheximide, z-VAD-FMK, a protein synthesis inhibitor and a non-specific caspase inhibitor, prevented the capsaicin cytotoxicity. The DNA ladder and TUNEL positive cells were observed among the capsaicin treated fibroblasts and Western blot revealed caspase-3 activity. CONCLUSION: The capsaicin-induced cytotoxicity on human skin fibroblasts is likely to suggest the mechanism of an apoptotic pathway, which can possibly be prevented by antioxidants.
Antioxidants
;
Ascorbic Acid
;
Blotting, Western
;
Calcium
;
Capsaicin*
;
Caspase 3
;
Cell Survival
;
Chromatin
;
Cycloheximide
;
Cytoplasm
;
DNA
;
Epidermal Growth Factor
;
Fibroblasts*
;
Humans*
;
In Situ Nick-End Labeling
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Intercellular Signaling Peptides and Proteins
;
Neuropeptides
;
Ruthenium Red
;
Skin*
;
Substance P
;
Tyrosine
5.Factors Influencing Central Neck Lymph Node Metastasis in Patients with Papillary Thyroid Microcarcinoma.
Young Hun KIM ; Yoo Seok KIM ; Kweon Cheon KIM
Korean Journal of Endocrine Surgery 2016;16(3):64-69
PURPOSE: A papillary thyroid microcarcinoma (PTMC) measures 1 cm or less in diameter. The diagnosis, and thus the apparent incidence, of PTMC has recently increased owing to an increase in the detection of subclinical small and low-risk carcinomas with ultrasonography and fine needle aspiration cytology. However, central neck lymph node metastasis (CLNM) can occur in patients with PTMC. We evaluated the factors influencing CLNM in patients with PTMC. METHODS: We reviewed medical records including clinical information and pathologic reports, and analyzed 622 patients with PTMC who underwent thyroid surgery from January 2002 to December 2012. RESULTS: CLNM was detected in 119 patients (19.1%) of the 622 with PTMC. Lymph node metastasis occurred more frequently in males (P=0.025), and those with bilateral tumors (P=0.016), more than two tumors (P=0.035), tumor size greater than 5 mm (P<0.001), and lymphovascular invasion (P=0.024). There were no statistically significant differences in age and capsular invasion. Multivariate analysis showed that significant factors affecting lymph node metastasis included age at operation (odds ratio [OR]=0.647, 95% confidence interval [CI]=0.422∼0.990, P=0.045), sex (OR=0.489, 95% CI=0.268∼0.891, P=0.020), tumor size (OR=3.034, 95% CI=1.761∼5.224, P<0.001), and lymphovascular invasion (OR=15.036, 95% CI=1.450∼155.911, P=0.023). CONCLUSION: Age less than 45 years, male sex, tumor size greater than 5 mm, and lymphovascular invasion were risk factors associated with CLNM.
Biopsy, Fine-Needle
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Carcinoma, Papillary
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Diagnosis
;
Humans
;
Incidence
;
Lymph Nodes*
;
Male
;
Medical Records
;
Multivariate Analysis
;
Neck*
;
Neoplasm Metastasis*
;
Risk Factors
;
Thyroid Gland*
;
Ultrasonography
6.Surgical Treatment of Pincer Nail Associated with Osteophyte.
Seok Kweon YUN ; Min Young YOU ; Jun Sang LEE
Korean Journal of Dermatology 2000;38(9):1215-1217
A 63-year-old woman had pronounced pincer nail of her big toenails. Her nail condition was markedly painful and associated with the underlying osteophyte. Under digital anaesthesia the nail plate was completely avulsed and the lateral portions of the matrix were destroyed by electrodessication. Then a longitudinal incision of the distal nail bed was made to separate it from the underlying structure and to expose the osteophyte. The exposed osteophyte was removed and the nail bed was sutured. Tie-under sutures were used to hold the bed in the appropriate transverse curvature. With this surgical correction, the treated nail showed a normal shape at 18 months of follow-up.
Female
;
Follow-Up Studies
;
Humans
;
Middle Aged
;
Nails
;
Osteophyte*
;
Sutures
7.Acetabular Medial Wall Displacement Osteotomy in Total Hip Arthroplasty for Dysplastic Hips.
Seok Hyun KWEON ; Hong Jun HAN ; Young YI
Journal of the Korean Hip Society 2010;22(1):38-44
PURPOSE: This study evaluated the results of acetabular medial wall osteotomy to reconstruct the acetabulum in dysplastic hip during total hip arthroplasty. MATERIALS AND METHODS: We clinically and radiologically evaluated 30 hips of 30 patients with secondary hip osteoarthritis caused by congenital hip dislocation or acetabular dysplasia who underwent total hip arthroplasty (THA) between March 1999 and October 2002. The average age of subjects was 46.5 years(17 to 73 years), and the mean follow-up period was 5 years(5.3 to 8.7 years). In 26 cases, a cementless hemispherical acetabular cup was inserted in the true acetabulum; in 4 cases a reinforced ring was inserted. Only 2 hips needed structural bone grafting. RESULTS: The average Harris hip score improved from 56.3 points preoperatively to 93.2 points at the last follow up. Radiographic analysis revealed no aseptic loosening or radiolucent line, and showed stable bony fixation at the true acetabulum. The mean thickness of the medial acetabular wall postoperative was 20.5 mm(10 to 36 mm). Bone union of the medial wall was observed at a mean of four months postoperatively. CONCLUSION: Acetabular medial wall osteotomy can maintain the integrity of the acetabular medial wall while achieving enhanced acetabular coverage and more normal hip biomechanics.
Acetabulum
;
Arthroplasty
;
Biomechanics
;
Bone Transplantation
;
Displacement (Psychology)
;
Follow-Up Studies
;
Hip
;
Hip Dislocation, Congenital
;
Humans
;
Osteoarthritis, Hip
;
Osteotomy
8.Structural Validity of the Diagnostic Interview for Internet Addiction Scale for Clinical Samples in Korean Children and Adolescents: Exploratory and Confirmatory Factor Analysis
Mi-Sun LEE ; Jung-Seok CHOI ; Yong-Sil KWEON ; Soo-Young BHANG
Psychiatry Investigation 2025;22(2):167-174
Objective:
This study aimed to validate the reliability and validity of the Diagnostic Interview for the Internet Addiction Scale (DIA) among Korean children and adolescents in the clinical setting.
Methods:
We collected the clinical data from university hospitals in South Korea and 194 children and adolescents (aged 7–18 years) completed the questionnaire. The content validity was conducted on 10 items of the DIA and an internal consistency test was performed for the verification of reliability.
Results:
Participants on average, aged 13.17 years (standard deviation=2.46), and 75.3% (n=146) were boys. The DIA was highly correlated with the scores of the Korean scale for Internet addiction for adolescents, Young’s Internet Addiction Test, Internet addiction proneness scale for children and adolescents. The overall sampling suitability of the 10-item scale was tested using the Kaiser–Meyer–Olkin, resulting in a high value of 0.861. The DIA revealed a two-factor structure and the Cronbach’s alpha correlation coefficient for the total scale was 0.806. Confirmatory factor analysis showed an acceptable model fit (root-mean square error of approximation=0.058, comparative fit index=0.950, and Tucker-Lewis Index=0.919).
Conclusion
The DIA may suggest in-depth-scale examinations of the factors that influence Internet addiction. We may expect that DIA would be used efficiently for the diagnosing of Internet addiction and further studies for the assessment.
9.Structural Validity of the Diagnostic Interview for Internet Addiction Scale for Clinical Samples in Korean Children and Adolescents: Exploratory and Confirmatory Factor Analysis
Mi-Sun LEE ; Jung-Seok CHOI ; Yong-Sil KWEON ; Soo-Young BHANG
Psychiatry Investigation 2025;22(2):167-174
Objective:
This study aimed to validate the reliability and validity of the Diagnostic Interview for the Internet Addiction Scale (DIA) among Korean children and adolescents in the clinical setting.
Methods:
We collected the clinical data from university hospitals in South Korea and 194 children and adolescents (aged 7–18 years) completed the questionnaire. The content validity was conducted on 10 items of the DIA and an internal consistency test was performed for the verification of reliability.
Results:
Participants on average, aged 13.17 years (standard deviation=2.46), and 75.3% (n=146) were boys. The DIA was highly correlated with the scores of the Korean scale for Internet addiction for adolescents, Young’s Internet Addiction Test, Internet addiction proneness scale for children and adolescents. The overall sampling suitability of the 10-item scale was tested using the Kaiser–Meyer–Olkin, resulting in a high value of 0.861. The DIA revealed a two-factor structure and the Cronbach’s alpha correlation coefficient for the total scale was 0.806. Confirmatory factor analysis showed an acceptable model fit (root-mean square error of approximation=0.058, comparative fit index=0.950, and Tucker-Lewis Index=0.919).
Conclusion
The DIA may suggest in-depth-scale examinations of the factors that influence Internet addiction. We may expect that DIA would be used efficiently for the diagnosing of Internet addiction and further studies for the assessment.
10.Structural Validity of the Diagnostic Interview for Internet Addiction Scale for Clinical Samples in Korean Children and Adolescents: Exploratory and Confirmatory Factor Analysis
Mi-Sun LEE ; Jung-Seok CHOI ; Yong-Sil KWEON ; Soo-Young BHANG
Psychiatry Investigation 2025;22(2):167-174
Objective:
This study aimed to validate the reliability and validity of the Diagnostic Interview for the Internet Addiction Scale (DIA) among Korean children and adolescents in the clinical setting.
Methods:
We collected the clinical data from university hospitals in South Korea and 194 children and adolescents (aged 7–18 years) completed the questionnaire. The content validity was conducted on 10 items of the DIA and an internal consistency test was performed for the verification of reliability.
Results:
Participants on average, aged 13.17 years (standard deviation=2.46), and 75.3% (n=146) were boys. The DIA was highly correlated with the scores of the Korean scale for Internet addiction for adolescents, Young’s Internet Addiction Test, Internet addiction proneness scale for children and adolescents. The overall sampling suitability of the 10-item scale was tested using the Kaiser–Meyer–Olkin, resulting in a high value of 0.861. The DIA revealed a two-factor structure and the Cronbach’s alpha correlation coefficient for the total scale was 0.806. Confirmatory factor analysis showed an acceptable model fit (root-mean square error of approximation=0.058, comparative fit index=0.950, and Tucker-Lewis Index=0.919).
Conclusion
The DIA may suggest in-depth-scale examinations of the factors that influence Internet addiction. We may expect that DIA would be used efficiently for the diagnosing of Internet addiction and further studies for the assessment.