1.Immunohistochemical and Electron Microscopic Study on the Esohageal Epithelium of the Human Fetus.
Korean Journal of Physical Anthropology 1994;7(1):47-61
To clarify the developmental characteristics of fetal esophageal epithelium especially ciliated cell, expressions of epidermal growth factor receptor (EGFR) and cytokeratin (CK) in fetal esophageal mucosa (16-24 weeks of gestation) were studied immunohistochemically, and ultrastructure of the ciliated cells was also observed. The expressions of EGFR and CK were identified in labelled streptoavidine biotin immunohistochemical method. Primary antibodies used were EGFR (Ab-4) which is affinity-purified from hyperimmune rabbit sera (Oncogene Science) and monoclonal mouse anti-human cytokeratin (DAK0-CK, MNFl16). The esophageal lumen was lined with stratified ciliated columnar epithelium between 16 and 24 weeks of gestation. The pattern of expression Of EGFR was different with gestational age and epithelial layer. The ciliated cell exhibited variable staining intensity for EGFR at 16 weeks. Some were stained intensively, and others were stained faintly. Number of ciliated cells stained intensively were gradually increased, and most of them were strongly stained at 24 weeks. The superficial non-ciliated cells, however, showed relatively constant staining property of moderate to intense between 16 and 24 weeks. EGFR immunoreactivity was minimal in the basal and intermediate cells at 16 weeks, but became more intense at 24 weeks. CK immunoreactivity in the ciliated cells between 16 and 24 weeks was similar to that of EGFR immunoreactivity. On the other hand, superficial non-ciliated cells were intense for CK staining at 16 weeks, but were very weak to negative at 24 weeks. CK immunoreactivity was intense in basal and intermediate cells between 16 and 24 weeks, but it was almost negative in the some cells of intermediate layer, especially beneath negatively stained non-ciliated cells, at 24 weeks. In electron microscopy, ciliated cells had well organized cilia and dense granules close to Golgi apparatus between 16 and 24 weeks. The cells apparently active in ciliogenesis were also observed. These cells had short microvilli, many centrioles, and dense granules close to Golgi apparatus. The non-ciliated cells contained numerous clear vesicles adluminally clustered at 16 weeks, while they had many dense vesicles of about same size of clear vesicles at 24 weeks. These results demonstrate the expressions of EGFR and CK in esophageal epithelium of human fetus between 16 and 24 weeks of gestational ages, and suggest that the ciliated cells are still proliferative at 24 weeks.
Animals
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Antibodies
;
Biotin
;
Centrioles
;
Cilia
;
Epithelium*
;
Fetus*
;
Gestational Age
;
Golgi Apparatus
;
Hand
;
Humans*
;
Keratins
;
Methods
;
Mice
;
Microscopy, Electron
;
Microvilli
;
Mucous Membrane
;
Pregnancy
;
Receptor, Epidermal Growth Factor
2.A Case of Acquired Digital Fibrokeratoma.
Yoon Sung PARK ; Dong Sik BANG
Korean Journal of Dermatology 1985;23(2):242-244
Acquired digital fibrokeratoma is an uncommon, solitary, round, firm, more or less hyperkeratotic projection, most frequently situated on fingers or toes but occasionally on the other locations. It arises out of a collarette of slightly raised skin and may have slight or great resemblance to a rudimentary supernumerary digit or may be mistaken for some other more ordinary condition such as an odd cutareous horn. We experienced a case of acquired digital fibrokeratoma on the right second finger in a 25-year-old male. We treated it with total excision.
Adult
;
Animals
;
Fingers
;
Horns
;
Humans
;
Male
;
Skin
;
Toes
3.Diagnosis and risk factors for heterotopic ossification in spinal cord injury.
Gi Young PARK ; Chang Il PARK ; Tae Sik YOON
Journal of the Korean Academy of Rehabilitation Medicine 1993;17(3):374-383
No abstract available.
Diagnosis*
;
Ossification, Heterotopic*
;
Risk Factors*
;
Spinal Cord Injuries*
;
Spinal Cord*
4.A Case of Eccrine Spiradenoma.
Yoon Sung PARK ; Hae Eul LEE ; Dong Sik BANG
Korean Journal of Dermatology 1983;21(4):483-487
Eccrine spiradenoma is clinically characterized by a solitary, movable, tender noduie occurring most frequently on the ventral surfase of the upper body. A striking symptom is paroxysmal pain. Histopathologically, the encapsulated lobules of the tumor are composed of masses of basophilic cells, usually arranged in whorls, cords, and pseudogland.s. Within the whorls and pseudoglands, two types of celIs are notedperipheral intensely staining cells and central pale-staining cells. We describe herein a patient with an indolent eccrine spiradenoma, which had been diagnosed histopathologically.
Basophils
;
Humans
;
Strikes, Employee
5.A Case of Sparganosis, Formed Giant Hematoma in Scrotum.
Yeung Sik PARK ; Chong Yoon CHO ; Kyoo Hwan KIM
Korean Journal of Urology 1964;5(2):121-123
Sparganum infestation in human body was reported over 20 cases in Korea. Infestation of sparganosis in spermatic cord was reported a case in Korea. Three cases of sparganosis at Keu Je island in Korea was reported by Dr. Weinstein, Krawczyc and Peers 1954. We experienced a case of the sparganum infestation in scrotum. The patient, 41 year-old male who was suffering with pulmonary tuberculosis moderate advanced, visited 3rd Army Hospital urologic clinic complained with acute swelling of the scrotum in baby head size abruptly without any specific causes. severe tenderness and walking disturbance. The laboratory findings revealed no specific findings except ascaris ova in stool. Operation revealed massive hematoma formation and proliferated connective tissue where noted several infested parasites in length of 120cm, 75cm, 70cm around the tunica vaginalis in scrotum Extracted parasites revealed milkish-whitish color, flat, fragile, and tendon like glistening appearance. There is not any specific sign and symptoms by parasite infestation on the other organs. Patient had an episode of intake of raw snake as a tonic 9 years ago at Keu Je island in Korea.
Adult
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Ascaris
;
Connective Tissue
;
Head
;
Hematoma*
;
Hospitals, Military
;
Human Body
;
Humans
;
Korea
;
Male
;
Ovum
;
Parasites
;
Scrotum*
;
Snakes
;
Sparganosis*
;
Sparganum
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Spermatic Cord
;
Tendons
;
Tuberculosis, Pulmonary
;
Walking
6.The effects of hyperbaric oxygen therapy on the survival of dorsal random skin flap: an experimental study in streptozotocin-induced diabetic rats.
Heung Sik PARK ; Yoon Jae CHUNG ; Hong Kyu CHO
Journal of the Korean Society of Plastic and Reconstructive Surgeons 1998;25(6):966-977
There have been increasing interests of diabetes in the realm of plastic surgery due to problems like foot ulcer as a complication, delayed wound healing or higher failure rates of flap surgery. Main pathology in diabetes is microvascular compromise as well as metabolic derangements. The disturbance in microvascular circulation results in ischemic environments in the body and acts as a main factor that determines the limit of reconstructive or aesthetic plastic surgery. A useful method to overcome such problems is the use of hyperbaric oxygen therapy, which is known to be effective in the treatment of ischemic skin ulcer or osteoradionecrosis. However, there have been few studies on the survival of diabetic random skin flap or the effects of hyperbaric oxygenation directed to increase survival of such flap. In our study, we supposed that the survival of diabetic random skin flap was diminished owing to compromised microvascular pathology and blood rheology, and metabolic derangements, so we hypothesized that hyperbaric oxygen therapy has both reversible and irreversible effects on the survival of ischemic random skin flap in Streptozotocin-induced diabetic rats. Increase of local transcutaneous oxygen concentration, O2 affinity in blood and dysmorphogenesis of red blood cells are reversible and relatively short-term effects and promotion of neoangiogenesis is irreversible or long-term effects. We intended to confirm that hyperbaric rats and to compare the effects between preoperative and postoperative hyperbaric oxygenation on the survival of such flap. And we expect the additional effects of hyperbaric oxygenation on metabolism in diabetic rat, such as lowering the blood glucose level and solving the arrested weight gain. We divided Streptozotocin-induced diabetic rats into three groups: the first was non-treatment diabetic group, the second was preoperative hyperbaric oxygen treated diabetic group(100% O2, 2 atm, 90min, 15sessions, twice a day), and the third was postoperative hyperbaric oxygen treated group(100% O2, 2atm, 90min, 15sessions, twice a day). After elevation of random skin flap on dorsum of diabetic rats, we evaluated the extent of flap survival by measuring the necrotic areas at 3rd, 7th, 10th, and 13th postoperative days. At that time, we intended to evaluate both effects on flap survival by preoperative and postoperative hyperbaric oxygen therapy. As a result, flap survival of non-treated diabetic group was 41% at 13th postoperative days. In diabetic groups with preoperative and postoperative hyperbaric oxygen therapy, flap survival were increased to 64.6% and 62.4% respectively. Diabetic groups with hyperbaric oxygen therapy have a tendency of meaningful decrement in blood glucose level. However, there were no meaningful differences between preoperative and postoperative hyperbaric oxygen therapy. Hyperbaric oxygen therapy has no effective correlations with body weight changes. We conclude that hyperbaric oxygen therapy has some useful effects on the survival of diabetic random skin flap.
Animals
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Blood Glucose
;
Body Weight Changes
;
Erythrocytes
;
Foot Ulcer
;
Hyperbaric Oxygenation*
;
Metabolism
;
Osteoradionecrosis
;
Oxygen
;
Pathology
;
Rats*
;
Rheology
;
Skin Ulcer
;
Skin*
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Surgery, Plastic
;
Weight Gain
;
Wound Healing
7.A Case of Nasopharyngeal Angiofibroma.
Kei Won SONG ; Seok Keun YOON ; Young Sik PARK
Yeungnam University Journal of Medicine 1984;1(1):191-197
Nasopharyngeal angiofibroma is a relatively rare, but is a well known tumor that occurs almost in male, most frequently during the adolescent stage. Its character is histologically benign but clinically malignant because of locally invasive character to the adjascent structures, massive bleeding tendency during surgical procedure and high recurrence rate after treatment. Recently many advancements diagnostic method and surgical technique has reached satisfactory result in treating this difficult tumor. The authors present a case of nasopharyngeal angiofibroma in 16 years old male patient, who was received surgical removal of the tumor through the transpalatal approach after full diagnostic evaluation and preoperative hormonal therapy.
Adolescent
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Angiofibroma*
;
Hemorrhage
;
Humans
;
Male
;
Methods
;
Recurrence
8.Thoracic Outlet Syndrome
Soo Bong HAHN ; Byeong Mun PARK ; Yong Sik YOON
The Journal of the Korean Orthopaedic Association 1981;16(3):662-667
Thoracic outlet syndrome is a collective term embracing previously described syndromes such as scalenus anticus, cervical rib, costoclavicular, hyperabduction and shoulder girdle compression syndromes. Its symptoms and signs are due to bony and soft tissue compression of the neurovascular bundle at the thoracic outlet. It is the purpose of this paper to evaluate the results of experience in treating the patient with thoracie outlet syndrome by surgical means. In this study, 3 cases: cervical rib (1 case), excessive callus formation after clavicular fracture (1 case), and hyperabduction syndrome with combined scalenus anticus syndrome (1 case), which had developed thoracic outlet syndrome were treated at Severance Hospital and gratifying results were obtained.
Bony Callus
;
Cervical Rib
;
Humans
;
Shoulder
;
Thoracic Outlet Syndrome
9.A Clinical Study on the Acetabular Fracture
Dae Yong HAN ; Byeong Mun PARK ; Yong Sik YOON
The Journal of the Korean Orthopaedic Association 1982;17(2):333-344
Acetabular fracture is severe injury and is associated with other body injuries severely. It's complications are traumatic arthritis and avascular necrosis of femoral head which induce severe permanent disability and its treatment is equivocal. A clinical study was performed on 70 patients with 65 fresh fractures and 5 old fractures of the acetabulum, who were hospitalized and treated at Severance Hospital from January 1971 to December 1980 and following results were obtained. 1. The prevalent age distribution was between 20 and 50 years of age (75.7%), and the ratio between males and females was 2.2:1. The most common cause of injury was traffic accident (70.%). 2. 56 patients (80.0%) were associated injuries of other parts and the most common associated fracture was pelvic bone fracture and the most common associated soft tissue injury was urological injury. 3. A classification of acetabular fracture was induced from Judet and Letournel's anatomical classification; simple fracture was 45 cases (64.2%), associated fracture was 25 cases (35.8%) and most common hip dislocation was posterior dislocation (31.4%). 4. The methods of treatment were; closed management by using traction for 53 patients, surgical management by open reduction and internal fixation for 12 patients, and hip reconstructive surgery by total hip replacement(2 patients), cup arthroplasty (2 patients), acetabular roof formation by using iliac bone graft (1 patient). 5. The satisfactory result of conservative treatment was (57.8%), surgical treatment was (72.7%), hip reconstructive treatment was (80.0%). 6. The complications of the acetabular fracture were traumatic arthritis (36.1%), avascular necrosis (23.0%), myositis ossificans (6.6%), infection (3.3%). 7. Finally, the results of treatment depend largely on anatomical reduction, early joint motion.
Accidents, Traffic
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Acetabulum
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Age Distribution
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Arthritis
;
Arthroplasty
;
Classification
;
Clinical Study
;
Dislocations
;
Female
;
Head
;
Hip
;
Hip Dislocation
;
Humans
;
Joints
;
Male
;
Myositis Ossificans
;
Necrosis
;
Pelvic Bones
;
Soft Tissue Injuries
;
Traction
;
Transplants
10.Frequency analysis of electric signals recorded in electrophysiologic studies.
Hong Sik PARK ; Ghi Chan KIM ; Hyun Yoon KO
Journal of the Korean Academy of Rehabilitation Medicine 1992;16(4):467-472
No abstract available.