1.The Effect of Additional Factor XIII on Cross-linking in Fibrin Glue.
Hyun Sook CHI ; Seog Woon KWON ; Dung Won HUH ; Eul Du SEO
Korean Journal of Blood Transfusion 1994;5(2):137-142
To investigate the effect of additional factor XIII on the rate of cross-linked fibrin formation in fibrin glue, we prepared concentrated fibrinogen as a source of fibrin glue using thaw -syphon method from fresh frozen plasma, purified human factor XIII from plasma, and performed biochemical analysis of the fibrin glue formed with or without additional factor XIII. It was concluded that additional factor XIII promoted rapid formation of cross-linked fibrin (gamma-gamma dimer and a-polymer) which would be essential to clinically effective fibrin glue.
Factor XIII*
;
Fibrin Tissue Adhesive*
;
Fibrin*
;
Fibrinogen
;
Humans
;
Plasma
2.Two cases of SAPHO syndrome.
Jee Hyun PARK ; Ho Seok SUH ; Kwang Won SEO ; In Du JEONG ; Hyun Chul JUNG ; Jong Soo LEE ; Seung Won CHOI
Korean Journal of Medicine 2003;65(Suppl 3):S782-S787
We describe two cases of SAPHO syndrome with history of palmoplantar pustulosis and pain on the anterior chest wall and lower back area. The acronym SAPHO (synovitis, acne, pustulosis, hyperostosis and osteitis) syndrome includes a group of disorders characterized by bony lesions commonly involving the anterior chest wall and associated with skin manifestations. The skeletal manifestation is characterized by the association of inflammation and hyperostotic change, in the form of sternocostoclavicular hyperostosis, spondyloarthropathy and chronic recurrent multifocal osteomyelitis. Common cutaneous lesions include palmoplantar pustulosis, pustulotic psoriasis, and severe forms of acne. The pathogenesis remains elusive, but a link with seronegative spondyloarthropathy is probable. To date, the treatment is empirical. Nonsteroidal anti-inflammatory drugs are the first choice, and other drugs including corticosteroid, disease modifying antirheumatic drugs, pamidronate, and infliximab have been tried with some therapeutic benefit. SAPHO syndrome is a condition in the differential diagnosis of infectious or tumorous conditions of the bone. Early and proper diagnosis is important to avoid unnecessary investigations or treatments.
Acne Vulgaris
;
Acquired Hyperostosis Syndrome*
;
Antirheumatic Agents
;
Diagnosis
;
Diagnosis, Differential
;
Hyperostosis
;
Hyperostosis, Sternocostoclavicular
;
Inflammation
;
Osteomyelitis
;
Psoriasis
;
Skin Manifestations
;
Spine
;
Spondylarthropathies
;
Thoracic Wall
;
Infliximab
3.Two cases of SAPHO syndrome.
Jee Hyun PARK ; Ho Seok SUH ; Kwang Won SEO ; In Du JEONG ; Hyun Chul JUNG ; Jong Soo LEE ; Seung Won CHOI
Korean Journal of Medicine 2003;65(Suppl 3):S782-S787
We describe two cases of SAPHO syndrome with history of palmoplantar pustulosis and pain on the anterior chest wall and lower back area. The acronym SAPHO (synovitis, acne, pustulosis, hyperostosis and osteitis) syndrome includes a group of disorders characterized by bony lesions commonly involving the anterior chest wall and associated with skin manifestations. The skeletal manifestation is characterized by the association of inflammation and hyperostotic change, in the form of sternocostoclavicular hyperostosis, spondyloarthropathy and chronic recurrent multifocal osteomyelitis. Common cutaneous lesions include palmoplantar pustulosis, pustulotic psoriasis, and severe forms of acne. The pathogenesis remains elusive, but a link with seronegative spondyloarthropathy is probable. To date, the treatment is empirical. Nonsteroidal anti-inflammatory drugs are the first choice, and other drugs including corticosteroid, disease modifying antirheumatic drugs, pamidronate, and infliximab have been tried with some therapeutic benefit. SAPHO syndrome is a condition in the differential diagnosis of infectious or tumorous conditions of the bone. Early and proper diagnosis is important to avoid unnecessary investigations or treatments.
Acne Vulgaris
;
Acquired Hyperostosis Syndrome*
;
Antirheumatic Agents
;
Diagnosis
;
Diagnosis, Differential
;
Hyperostosis
;
Hyperostosis, Sternocostoclavicular
;
Inflammation
;
Osteomyelitis
;
Psoriasis
;
Skin Manifestations
;
Spine
;
Spondylarthropathies
;
Thoracic Wall
;
Infliximab
4.Radiologic findings of truncus arteriosus; incidence and associated anomalies.
Hyeon Kyeong LEE ; Kyung Mo YEON ; Young Hi CHOE ; In One KIM ; Yun Hyun CHOE ; Yo Won CHOI ; In Ok AHN ; Du Whan CHOE ; Kyung Hwan LEE
Journal of the Korean Radiological Society 1992;28(1):156-161
Truncus arteriosus is characterized by a single arterial vessel arising from the base of the heart and giving origin to the systemic, pulmonary and coronary circulation. To evaluate the incidence, types, and associated anomalies, 18cases of truncus arteriosus diagnosed by angiocardiography, were reviewed and were compared with other reports. Ten of them were confirmed by operation. The overall incidence of truncus arteriosus was 0.127%. Accordin to Collett and Edwards classification. Type I was encountered in 11cases(61%), type II in 4cases(22%), and type III in 3cases(17%), All the patients had subtruncal ventricular septal defects. Eight patients showed truncal valve regurgitation and valve stenosis was noted in one case. A right aortic arch was present in 9 cases. Associated anomalies were atrial septal defect(8cases), patent ductus arteriosus(3cases), coarctation of the aorta(2cases), isolation of the left subclavian artery(2 cases), and right aortic arch with an aberrant left subclavian artery(1case). Truncus arteriosus is an uncommon congenital cardio vascular malformation. In the group of cases which we encountered, type I was the most common anomaly. Frequently associated anomalies were right aortic arch, incompetent truncal valve and atrial septal defect.
Angiocardiography
;
Aorta, Thoracic
;
Classification
;
Constriction, Pathologic
;
Coronary Circulation
;
Heart
;
Heart Septal Defects, Atrial
;
Heart Septal Defects, Ventricular
;
Humans
;
Incidence*
;
Truncus Arteriosus*
;
Vascular Malformations
5.The effect of different crystallization temperature of the hydroxyapatite coating produced by ion beam-assisted deposition on anodizing-treated titanium disks on human osteosarcoma cells.
Ahran PAE ; Hyun Du WON ; Richard LEESUNGBOK ; Hyeong Seob KIM ; Yi Hyung WOO
The Journal of Korean Academy of Prosthodontics 2011;49(4):333-340
PURPOSE: The aim of this study was to study the effect of hydroxyapatite (HA) coating crystallinity on the proliferation and differentiation of human osteosarcoma cells. MATERIALS AND METHODS: Surface roughness of the titanium disks increased by anodizing treatment and then HA was coated using ion beam-assisted deposition (IBAD). HA coating was crystallized by heat-treated at different temperature (100degrees C, 300degrees C, 500degrees C, 800degrees C). According to the temperature, disks were divided into four groups (HA100, HA300, HA500, HA800). With the temperature, crystallinity of the HA coating was different. Anodized disks were used as control group. The physical properties of the disk surface were evaluated by surface roughness tests, XRD tests and SEM. The effect of the crystallinity of HA coating on HOS cells was studied in proliferation and differentiation. HOS cells were cultured on the disks and evaluated after 1, 3, 5, and 7 days. Growth and differentiation kinetics were subsequently investigated by evaluating cell proliferation and alkaline phosphatase activity. RESULTS: Regardless of the heat-treated temperature, there is no difference on the surface roughness. Crystallinity of the HA was appeared in the groups of HA500, HA800. HOS cells proliferation, ALP activity were higher in HA500 and HA800 group than HA100 and HA300. CONCLUSION: Within the results of this limited study, heat treatment at 500degrees C of HA coating produced by IBAD has shown greater effect on proliferation and differentiation of HOS cells. It is considered that further in vivo study will be necessary.
Alkaline Phosphatase
;
Cell Proliferation
;
Crystallins
;
Crystallization
;
Durapatite
;
Hot Temperature
;
Humans
;
Kinetics
;
Osteosarcoma
;
Titanium
6.Deferoxamine Pretreatment Reduces Infarct Size of Acute Myocardial Infarction in a Rabbit Model.
Kwan Mo YANG ; Dong Rul OH ; Seung Hyun PARK ; Kyu Nam PARK ; Won Jae LEE ; Hyung Kook KIM ; Du Young HWANG ; Seung Pil CHOI ; Jang Seong CHAE
Journal of the Korean Society of Emergency Medicine 1998;9(4):496-504
BACKGROUND: Reperfusion of ischemic myocardium has been postulated to result in a specific oxygen radical mediated tissue injury. Iron may liberate during ischemia and we hypothesized that administration of the iron chelator, deferoxamine during ischemia would result in improved recovery after postischemic reperfusion. PURPOSE: To test whether iron-catalyzed processes contribute to myocardial necrosis during ischemia and reperfusion, deferoxamine was administered to block iron catalyzed hydroxyl radical formation in rabbits. METHODS: Eleven rabbits were divided into two groups: control group (n=5) and deferoxamine pretreatment group (n=6). the left circumflex coronay artery was ligated for 30 minutes and reperfused for 180 minutes. Area at risk (AR) was measured by non-stained area with ethylene blue injection into left atrium after left circumflex coronary artery ligation. Infarct size was measured by weighing after tripheyltetrazolium chloride staining. Heart rate was measured using electrocardiographic recording and systemic blood pressure was monitored by pressure transducer connected to the catheter in the left ventricle. RESULTS: 1. There was no significant difference of heart rate and blood pressure in deferoxamine pretreatment group compared with control group. 2. There was significant decrease of serum iron concentration after continuous infusion of deferoxamine compared with serum iron concentration before ligation of coronary artery (P<0.05). 3. There was no significant difference of area at risk between control and deferoxamine pretreatment group. 4. Area at necrosis to area at risk was significantly reduced in deferoxamine pretreatment group compared with control group (P<0.05) The results suggest that deferoxamine infusion prior to coronary artery occlusion has a significant benefit in reducing infarct size in this model.
Arteries
;
Blood Pressure
;
Catheters
;
Coronary Vessels
;
Deferoxamine*
;
Electrocardiography
;
Heart Atria
;
Heart Rate
;
Heart Ventricles
;
Hydroxyl Radical
;
Iron
;
Ischemia
;
Ligation
;
Myocardial Infarction*
;
Myocardium
;
Necrosis
;
Oxygen
;
Rabbits
;
Reperfusion
;
Transducers, Pressure
7.Erratum: The effect of different crystallization temperature of the hydroxyapatite coating produced by ion beam-assisted deposition on anodizing-treated titanium disks on human osteosarcoma cells.
Hyun Du WON ; Ahran PAE ; Richard LEESUNGBOK ; Hyeong Seob KIM ; Yi Hyung WOO
The Journal of Korean Academy of Prosthodontics 2012;50(3):216-216
There has been a mistake, claimed and confirmed by all the authors of Vol 49(4), 2011, p. 333-340 issue, that first author should have been Hyun-Du Won instead of Ahran Pae.
8.Misdiagnosed Snapping Triceps Syndrome on Ulnar Nerve Dislocation
Ji-Hoon KIM ; Chul-Hyun CHO ; Tae-Won KOO ; Du-Han KIM
The Journal of the Korean Orthopaedic Association 2023;58(1):73-77
Snapping triceps syndrome is a rare disease in which the distal portion of the medial triceps dislocates over the medial epicondyle during flexion of the elbow. It is usually accompanied with ulnar nerve dislocation and double snapping is clinically important feature. Dynamic ultrasonography is useful diagnostic tool for snapping triceps syndrome and ulnar nerve dislocation. But it is often misdiagnosed as ulnar nerve dislocation alone. This review reports a case of 28-year-old professional golfer who had a single snapping on elbow, misdiagnosed as ulnar nerve dislocation alone and eventually diagnosed as ulnar nerve dislocation and snapping triceps syndrome and also reflects factors that are overlooked through first and second operations.
9.Development of Prediction Model Using Machine-Learning Algorithms for Nonsteroidal Anti-inflammatory Drug-Induced Gastric Ulcer in Osteoarthritis Patients: Retrospective Cohort Study of a Nationwide South Korean Cohort
Jaehan JEONG ; Hyein HAN ; Du Hyun RO ; Hyuk-Soo HAN ; Sungho WON
Clinics in Orthopedic Surgery 2023;15(4):678-689
Background:
Nonsteroidal anti-inflammatory drugs (NSAID) are currently among the most prescribed medications worldwide to relieve pain and reduce inflammation, especially in patients suffering osteoarthritis (OA). However, NSAIDs are known to have adverse effects on the gastrointestinal system. If a gastric ulcer occurs, planned OA treatment needs to be changed, incurring additional treatment costs and causing discomfort for both patients and clinicians. Therefore, it is necessary to create a gastric ulcer prediction model that can reflect the detailed health status of each individual and to use it when making treatment plans.
Methods:
Using sample cohort data from 2008 to 2013 from the National Health Insurance Service in South Korea, we developed a prediction model for NSAID-induced gastric ulcers using machine-learning algorithms and investigated new risk factors associated with medication and comorbidities.
Results:
The population of the study consisted of 30,808 patients with OA who were treated with NSAIDs between 2008 and 2013. After a 2-year follow-up, these patients were divided into two groups: without gastric ulcer (n=29,579) and with gastric ulcer (n=1,229). Five machine-learning algorithms were used to develop the prediction model, and a gradient boosting machine (GBM) was selected as the model with the best performance (area under the curve, 0.896; 95% confidence interval, 0.883–0.909). The GBM identified 5 medications (loxoprofen, aceclofenac, talniflumate, meloxicam, and dexibuprofen) and 2 comorbidities (acute upper respiratory tract infection [AURI] and gastroesophageal reflux disease) as important features. AURI did not have a dose-response relationship, so it could not be interpreted as a significant risk factor even though it was initially detected as an important feature and improved the prediction performance.
Conclusions
We obtained a prediction model for NSAID-induced gastric ulcers using the GBM method. Since personal prescription period and the severity of comorbidities were considered numerically, individual patients’ risk could be well reflected. The prediction model showed high performance and interpretability, so it is meaningful to both clinicians and NSAID users.
10.A case of successful treatment of adult onset Still's disease with high dose immunoglobulin therapy.
Kwang Won SEO ; Byung Chul KIM ; Jee Hyun PARK ; In Du JEONG ; Jong Soo LEE ; Jae Hoo PARK ; Seung Won CHOI
Journal of Asthma, Allergy and Clinical Immunology 2002;22(3):608-613
Adult onset Still's disease (AOSD) is a rare systemic inflammatory disorder of unknown etiology. It is characterized by spiking fever, evanescent skin rash, arthritis, and various systemic manifestations. Liver involvement is common in AOSD, with up to three-quarters of the patients exhibiting elevation of hepatic enzymes or hepatomegaly. The treatment of AOSD is depends on the severity of the disease or the organ involvement. Numerous drugs have been used including nonsteroidal antiinflammatory drugs (NSAIDs), corticosteroid, and immunosuppressive agents. However, the use of intravenous immunoglobulin (IVIG) was rarely reported, and its efficacy is still controversial. We describe a patient with AOSD who developed acute severe hepatitis refractory to corti costeroid, but it was successfully treated with IVIG. An 18-year-old woman developed malaise, jaundice and nausea. One month ago, she was diagnosed as AOSD and treated with prednisolone and naproxen. Laboratory tests demonstrated marked increase of transaminase, bilirubin and ferritin. Etiologic evaluation for viral hepatitis and other causes showed negative result. In spite of methylprednisolone pulse therapy, hepatitis aggravated rapidly. After IVIG (0.4 g/ kg/day) was administered for 5 days, her systemic symptoms and hepatitis were much improved. We considered that IVIG may be a potential alternative for the treatment of AOSD, particularly refractory to conventional therapy.
Adolescent
;
Adult*
;
Arthritis
;
Bilirubin
;
Exanthema
;
Female
;
Ferritins
;
Fever
;
Hepatitis
;
Hepatomegaly
;
Humans
;
Immunization, Passive*
;
Immunoglobulins*
;
Immunoglobulins, Intravenous
;
Immunosuppressive Agents
;
Jaundice
;
Liver
;
Methylprednisolone
;
Naproxen
;
Nausea
;
Prednisolone
;
Still's Disease, Adult-Onset*