1.A clinical study of colorectal cancer.
Young Dae KWON ; Yong Oon YOO ; Kwang Duck HUR
Journal of the Korean Surgical Society 1993;44(2):266-272
No abstract available.
Colorectal Neoplasms*
2.Magnesium vs. machined surfaced titanium - osteoblast and osteoclast differentiation.
Yong Dae KWON ; Deok Won LEE ; Sung Ok HONG
The Journal of Advanced Prosthodontics 2014;6(3):157-164
PURPOSE: This study focused on in vitro cell differentiation and surface characteristics in a magnesium coated titanium surface implanted on using a plasma ion source. MATERIALS AND METHODS: 40 commercially made pure titanium discs were prepared to produce Ti oxide machined surface (M) and Mg-incorporated Ti oxide machined surface (MM). Surface properties were analyzed using a scanning electron microscopy (SEM). On each surface, alkaline phosphatase (ALP) activity, alizarin red S staining for mineralization of MC3T3-E1 cells, and quantitative analysis of osteoblastic gene expression, were evaluated. Actin ring formation assay and gene expression analysis of TRAP and GAPDH performing RT-PCR were performed to characterize osteoclast differentiation on mouse bone marrow-derived macrophages (BMMs). RESULTS: MM showed similar surface morphology and surface roughness with M, but was slightly smoother after ion implantation at the micron scale. M was more hydrophobic than MM. No significant difference between surfaces on ALP activity at 7 and 14 days were observed. Real-time PCR analyses showed similar levels of mRNA expression of the osteoblast phenotype genes; osteopontin (OPN), osteocalcin (OCN), bone sialoprotein (BSP), and collagen 1 (Col 1) in cell grown on MM at 7, 14 and 21 days. Alizarin red S staining at 21 days showed no significant difference. BMMs differentiation increased in M and MM. Actin ring formation assay and gene expression analysis of TRAP showed osteoclast differentiation to be more active on MM. CONCLUSION: Both M and MM have a good effect on osteoblastic cell differentiation, but MM may speed the bone remodeling process by activating on osteoclast differentiation.
Actins
;
Alkaline Phosphatase
;
Animals
;
Bone Remodeling
;
Cell Differentiation
;
Collagen
;
Gene Expression
;
Integrin-Binding Sialoprotein
;
Macrophages
;
Magnesium*
;
Mice
;
Microscopy, Electron, Scanning
;
Osteoblasts*
;
Osteocalcin
;
Osteoclasts*
;
Osteopontin
;
Phenotype
;
Plasma
;
Real-Time Polymerase Chain Reaction
;
RNA, Messenger
;
Surface Properties
;
Titanium*
3.Seven Autopsy Cases of Anencephaly.
Sang Taek LEE ; Chang Ho HAN ; Soo Yong KIM ; Jung Kwon LEE ; Young Dae KWON
Journal of the Korean Pediatric Society 1987;30(11):1317-1322
No abstract available.
Anencephaly*
;
Autopsy*
4.A Case of Annular Pancreas.
Dong Wook KIM ; Sang Taik LEE ; Soo Yong KIM ; Jeong Kwon LEE ; Young Dae KWON
Journal of the Korean Pediatric Society 1986;29(10):99-103
No abstract available.
Pancreas*
5.A Case of Congenital Hypothyroidism.
Woo Hyon KWON ; Soon Young SONG ; Chang Ho HAN ; Hyae Ri CHUNG ; Soo Yong KIM ; Young Dae KWON
Journal of the Korean Pediatric Society 1990;33(5):708-713
No abstract available.
Congenital Hypothyroidism*
6.A Case of Giant-cell Tumor of the Thoracic Spine.
Jun Ho CHO ; Soo Il YOO ; Young Dae KWON ; Yong Sung LEE
Journal of Korean Neurosurgical Society 2000;29(7):940-944
No abstract available.
Spine*
7.Clinical Analysis of Postoperative Prognostic Factors of Cervical Anterior Decompression and Interbody Fusion for Ossification of Posterior Longitudinal Ligament.
Sang Joon SIM ; Jun Ho CHO ; Soo Il YOO ; Young Dae KWON ; Yong Sung LEE
Journal of Korean Neurosurgical Society 2000;29(3):360-364
No abstract available.
Decompression*
;
Ossification of Posterior Longitudinal Ligament*
8.Additional Comments on 'Clinical Trial to Evaluate the Efficacy and Safety of a Home-use Intense Pulsed Light Device for Hair Removal, Treatment of Acne and Pigmentation Disorders, and Fine Wrinkle Reduction'.
Seonguk MIN ; Hyuck Hoon KWON ; Seon Yong PARK ; Ji Young YOON ; Dae Hun SUH
Korean Journal of Dermatology 2015;53(1):88-88
No abstract available.
Acne Vulgaris*
;
Hair Removal*
;
Pigmentation Disorders*
9.A Case of Leiomyosarcoma of the Scrotum.
Cheol Yong YOON ; Sung Dae KWON ; Jae Heung CHO ; Chul Whan KIM
Korean Journal of Urology 1996;37(12):1421-1423
Scrotal leiomyosarcoma arising from dartos layer not involving the testis, epididymis or spermatic cord is very rare tumor. We report a case of scrotal leiomyosarcoma in 29 year old man who present with right scrotal painless growing mass. The lesion had been for 3 months but there was no related symptom such as pain or tenderness. The excised lesion was 3 x 3cm sized ovoid mass with smooth surface and it had no relationship with the testis, epididymis and spermatic cord. Its pathologic finding was compatible with leiomyosarcoma. So additional radical orchiectomy was done.
Adult
;
Epididymis
;
Humans
;
Leiomyosarcoma*
;
Male
;
Orchiectomy
;
Scrotum*
;
Spermatic Cord
;
Testis
10.Clinical Features of Retinopathy in Chronic Hepatitis B Patients With Treated With Peginterferon.
Journal of the Korean Ophthalmological Society 2011;52(1):41-45
PURPOSE: To evaluate the clinical features of retinopathy in chronic hepatitis B patients treated with peginterferon. METHODS: Chronic hepatitis B patients treated with peginterferon were evaluated during regular routine ophthalmic examinations including fundus examination before and during the 1-year follow-up after treatment. A total of 88 patients were included in the study. RESULTS: Retinopathy developed in 11 (12.5%) out of 88 patients at a mean of 7 weeks after initiation of treatment. Peginterferon treatment was continued in all patients and retinal abnormalities including cotton wool spot, retinal hemorrhage and microaneurysm resolved without visual impairment. The incidence of hypertension between the retinopathy group and the group without retinopathy was significantly different (P = 0.020). CONCLUSIONS: The incidence of retinopathy with peginterferon in chronic hepatitis B patients was low and the prognosis was benign. Thus, routine screening for peginterferon retinopathy is not necessary.
Follow-Up Studies
;
Hepatitis B, Chronic
;
Hepatitis, Chronic
;
Humans
;
Hypertension
;
Incidence
;
Mass Screening
;
Prognosis
;
Retinal Hemorrhage
;
Retinaldehyde
;
Vision Disorders
;
Wool