1.A Morphological Study of the Pulmonary Endothelium and Neuroendocrine Cells in Monocrotaline-Induced Pulmonary Arterial Hypertension.
Woo Ick YANG ; Sang Ho CHO ; In Joon CHOI ; Yoo Bock LEE
Korean Journal of Pathology 1992;26(6):582-592
To investigate the mechanism of monocrotaline-induced pulmonary arterial hypertension, authors performed immunohistochemical study using antibody to von Willebrand factor(vWF), cell kinetic study using 5-bromodeoxyuridine and ultrastructural study after single subcutaneous injection of monocrotaline(MCT) to Wistar rats. The results of this study demonstrated that the expression of vWF by pulmonary endothelial cells was markedly increased from day 3 until 2 months after MCT injection. The labeling index of pulmonary microvessel endothelium began to increase after six days and was maximal on the third weeks, and thereafter it remained slightly increased above basal level. Electron microscopic study revealed attachment of inflammatory cells an platelets to endothelium from 6 hours and degranulation of attached platelets 24 hours after MCT injection. Evidences of endothelial injury began to appear from 12 hours after MCT injection. Evidences of endothelial injury began to appear from 12 hours and was maximal after 48 hours. From the third day, ultrastructural change of cell regeneration and hypertrophy began to appear and was continuosly observed until 2 months. In addition, we evaluated the changes in the number of pulmonary neuroendocrine cells using antibody to gastrin releasing peptide but it demonstrated no change until 2 months suggesting no role of neuroendocrine cells in the development of pulmonary hypertension of Wistar rats at early stage. In conclusion, the results indicate that pulmonary hypertension by MCT injection is due to increased vascular resistance caused by vasoconstriction and hyperplasia of endothelium with musculariz ation of the pulmonary arterioles induced by endothelial dysfunction and some biologic substances released form endothelium and platelets.
Rats
;
Animals
2.Clinical Effects and Safety of Delapril in Patients with Essential Hypertension.
Se Ick OH ; Hyung Gon KIM ; Gwang Ho CHUNG ; Suck Koo CHOI ; Won Sang YOO
Korean Circulation Journal 1992;22(4):676-682
BACKGROUND: To evaluate depressure effect and safety of delapril, a new ACE inhibitor, in Korea. METHOD: Thirty three patients, aged 37-69, with mild to moderate essential hypertension were first observed for 2 weeks with placebo followed by administration of 15mg of delapril twice daily for 2 weeks, then doubled dosage to 30mg b.i.d. and combined with 25mg of dihydrochlorothiazide if optimal BP were not obtained at the end of 4th week, continued the same dose until the end of 10 week's trial period. RESULT: BP dropped 15/9mmHg inaverage at the end of 10th week rewarding 70% of cumulative effectiveness. Most frequent side reaction was dry cough, occurred in 9% of patients followed by chest tightness, headache, constipation and transient elevation of GPT. CONCLUSION: Delapril 15-30mg twice daily as monotheraphy or combined with diuretics is well tolerated and effective in the treatment of mild to moderate essential hypertension.
Constipation
;
Cough
;
Diuretics
;
Headache
;
Humans
;
Hydrochlorothiazide
;
Hypertension*
;
Korea
;
Reward
;
Thorax
3.Giant Cell Tumor of the Larynx: Report of a case.
Soya PAIK ; Yoon Mee JEEN ; Woo Ick YANG ; In Joon CHOI ; Young Ho KIM
Korean Journal of Pathology 1997;31(1):75-78
Giant cell tumor arising in the osteocartilaginous tissue of the larynx is extremely rare. The few reported cases have all occurred in men older than 20 years and the site of origin has been exclusively localized to the thyroid and cricoid cartilages that are known to undergo enchondral ossification. The formation of giant cell tumor in larynx is thought to be related to this enchondral ossification process. We report a case of giant cell tumor arising in the thyroid cartilage of a 39 year old man. CT scan of the neck revealed a well defined mass of soft tissue density replacing the right thyroid cartilage. Grossly the tumor was well demarcated with a distinctive pushing margin except for the area bordering the submucosa of the larynx where it showed focally an infiltrative pattern of growth. Microscopically multinucleated giant cells were found dispersed regularly among the spindle cells. Although mitoses were frequently noted in the spindle cells there was no atypicality or pleomorphism. Total laryngectomy was performed without further treatment. Postoperative follow up for 6 months has proved the patient to be alive and well without recurrence.
Adult
;
Cricoid Cartilage
;
Follow-Up Studies
;
Giant Cell Tumors*
;
Giant Cells*
;
Humans
;
Laryngectomy
;
Larynx*
;
Male
;
Mitosis
;
Neck
;
Recurrence
;
Thyroid Cartilage
;
Thyroid Gland
;
Tomography, X-Ray Computed
4.Giant cell arteritis of the breast: a case report.
Kyoung Ho KIM ; Woo Ick YANG ; In Joon CHOI
Yonsei Medical Journal 1990;31(1):80-84
Recently we experienced a case manifested by a lump in both breast that mimicked carcinoma but was found to be a vasculitis of the giant cell type. Our case was characterized histologically by granulomatous arteritis involving small to medium sized arteries of the breast without involvement of the temporal artery. We described the clinical and pathologic features of a case of giant cell arteritis of the breast and reviewed the eight previously reported cases in foreign literature.
Aged
;
Breast/pathology
;
Breast Diseases/*pathology
;
Case Report
;
Female
;
Human
;
Temporal Arteritis/*pathology
5.The Simple Excision of Ossicles for Osgood-Schlatter Lesion
Kwon Ick HA ; Sung Ho HAN ; Kun Young PARK ; Jung Hun CHOI
The Journal of the Korean Orthopaedic Association 1983;18(2):335-338
Of 35 patients with 38 knees treated using simple excision method for Osgood-Schlatter lesion, had a distinct and separate ossicle at the tibial tubercle. All ossicles were attached to the distal part of the undersurface of the ligamentum patellae and were separated from the tuberosity by a bursa or scar tissue. Surgical excision of ossicle along with adjacent bursa was satisfactory and simplest procedure to relieve the symptoms, did not respond to conservative treatment.
Cicatrix
;
Humans
;
Knee
;
Methods
;
Patellar Ligament
6.A Roles of Cinedefecography and Electromyography in the Diagnosis of Paradoxical Puborectalis Syndrome.
Ick KANG ; Jeong Seok CHOI ; Dong Jo LEE ; Beung Ho KIM ; Yong Jun SEO ; Jun Heun KIM
Journal of the Korean Surgical Society 1999;57(5):693-699
BACKGROUND: Paradoxical puborectalis syndrome (PPS) is a complex and poorly understood entity characterized by contraction rather than relaxation of the pelvic floor muscles during attempted evacuation. Anal electromyography (EMG) and cinedefecography (CD) are the most commonly used tests for the diagnosis of PPS. Therefore, the aim of this study was to prospectively assess the correlation of EMG and CD in the diagnosis of PPS. METHODS: All patients with symptoms of obstructed evacuation who underwent EMG and CD between September 1998 and February 1999, were evaluated. The clinical criteria for PPS included incomplete or difficult evacuation, straining, tenesmus, and the need for an enema or digitation. The EMG criteria included failure to achieve a significant decrease in the electrical activity of the puborectalis during attempted evacuation. The CD criteria included either paradoxical contraction or failure of the puborectalis to relax along with incomplete evacuation. RESULTS: Twenty-nine (29) patients had clinical evidence of PPS, 8 males and 21 females with a mean age of 42.6 years (range, 19-75 years), and underwent CD and EMG. The mean duration of symptoms was 7.2 years (range, 3 months-30 years). Nineteen patients (65.5%) had evidence as having PPS on CD and/or EMG. Of these patients, six patients (20.7%) were diagnosed as having PPS on both tests, five patients (17.2%) were only diagnosed on CD, and eight patients (27.6%) were only diagnosed on EMG. The remaining ten patients had normal puborectalis muscle relaxation on CD and EMG. Therefore, the correlation rate between the two tests was 55.2%. If EMG was considered as the ideal test for the diagnosis of PPS, CD had a sensitivity of 42.9% and a specificity of 66.7%. Conversely, if CD was considered as the ideal test, EMG had a sensitivity of 54.5% and a specificity of 55.6%. CONCLUSIONS: The sensitivity and the specificity values of EMG and CD for the diagnosis of PPS are suboptimal, and a low correlation existed between the two tests. This result suggests that the diagnosis of PPS should not be based upon only one test.
Constipation
;
Diagnosis*
;
Electromyography*
;
Enema
;
Female
;
Humans
;
Male
;
Muscle Relaxation
;
Muscles
;
Pelvic Floor
;
Prospective Studies
;
Relaxation
;
Sensitivity and Specificity
7.Intramedullary Spinal Abscess: Case Report.
Kyu Man SHIN ; Ho Ick CHOI ; Chong Soo KYE ; Ki Chan LEE ; Jeong Wha CHU
Journal of Korean Neurosurgical Society 1975;4(1):155-158
Intramedullary spinal cord abscess is rare condition, and that, the diagnosis of an abscess is rarely established before operative interference is indicated. A case of spinal cord abscess is reported upon 42 year-old male who was admitted to this hospital because of severe pain in the posterior lower neck and weakness in all 4 extremities. The patient have no history of infection or operation in recent past. On admission the subject was in state of quadriparesis, and the superficial sensory impairement was up to the level of T1 3 spinal dermatome. In an early course of the illness the motor weakness had started to appear in the left arm and the impairement of pain and temperature sensations in the right leg, indicating a picture of Brown-Sequard's syndrome. Radiographic examinations disclosed a localized enlargement of lower cervical canal with a widening of interpedicular distance and showed a defect and obstruction of dye column at C6 spinal level, which were suggestive of picture of intramedullary tumor. Operation the exposed spinal laminae and dura showed nothing abnormal, but the dura mater was under the grerat pressure. Opening the dura the spinal cord was swollen, tense and nonpulsatile with dusky red discoloration on a surface of the cord. Pus contents were obtained by needle aspiration and through a myelotomy opening the contents were evacuated completely. Culture of the pus contents produced no organisms. Pathology reported a nonspecific suppurative inflammation on the biopsy. The surgical treatment was combined with the administration of antibiotics, in full theapeutic doses and steroid postoperatively. Two weeks after the surgery he showed significant recovery from the neurological dysfunctions in his legs.
Abscess*
;
Adult
;
Anti-Bacterial Agents
;
Arm
;
Biopsy
;
Brown-Sequard Syndrome
;
Diagnosis
;
Dura Mater
;
Extremities
;
Humans
;
Inflammation
;
Leg
;
Male
;
Neck
;
Needles
;
Pathology
;
Quadriplegia
;
Sensation
;
Spinal Cord
;
Suppuration
;
Transcutaneous Electric Nerve Stimulation
8.Morphometric Evaluation of PGP9.5 and NCAM Expressing Nerve Fibers in Colonic Muscle of Patients with Hirschsprung's Disease.
Jung Tak OH ; Ai Ri HAN ; Woo Ick YANG ; Seok Joo HAN ; Seung Hoon CHOI ; Eui Ho HWANG
Yonsei Medical Journal 2002;43(1):31-36
A quantitative assessment of the density of the protein gene product 9.5 (PGP9.5), the neural cell adhesion molecule (NCAM), and the low-affinity nerve growth factor receptor (NGFR) expressing nerve fibers in the circular muscle layer in the colon was carried out by morphometric analyses from 13 patients with Hirschsprung's disease (HD). The difference in the nerve fiber density between the ganglionic and aganglionic segments was compared by calculating the ratio of the sum of the areas occupied by positively stained nerve fibers per unit area of the muscle after immunohistochemical staining on paraffin embedded tissue sections using computer software. There was an obvious difference in the density of the PGP9.5 stained nerve fibers between the ganglionic (0.0380 +/- 0.0171) and aganglionic segments (0.0143 +/- 0.01661). The NCAM-positive nerve fibers were fewer in number than those of both the PGP9.5-positive fibers and NCAM-positive fibers, which were also markedly lower in number in the aganglionic segment (0.0066 +/- 0.0076) than in the ganglionic segment (0.0230 +/- 0.0195). Immunostaining for low-affinity NGFR revealed much fainter staining in the ganglionic and aganglionic segment without a statistically significant difference in their density. Considering the fact that PGP9.5 is a very sensitive marker for nerve fibers, the results of this study reaffirm the innervation failure of the proper muscle in HD. The decreased NCAM expression level in the aganglionic segment appears to be caused not by the selective down-regulation of NCAM expression among the nerve fibers but by a markedly reduced number of nerve fibers.
Colon/*innervation
;
Hirschsprung Disease/*pathology
;
Human
;
Muscle, Smooth/*innervation
;
Nerve Fibers/*chemistry/pathology
;
Neural Cell Adhesion Molecules/*analysis
;
Receptor, Nerve Growth Factor/analysis
;
Thiolester Hydrolases/*analysis
9.Prevalence of alpha1-Antitrypsin Genotypes in Koreans.
Jae Yong PARK ; Jin Eun CHOI ; Seung Ick CHA ; Nack Cheon BAE ; Po Hee CHAE ; Jae Yook LEE ; Young Mo KANG ; Chang Ho KIM ; Tae Hoon JUNG
Tuberculosis and Respiratory Diseases 2001;50(2):229-235
BACKGROUND: Alpha-1-antitrypsin (A1AT) deficiency is the only established genetic resk factor for emphysema. This study was undertaken to investigate the prevalence of the genotypes of A1AT genotypes in healthy Koreans. METHOD: The study population consisted of 380 healthy Koreans enrolled at the Health Promotion Center in Kyungpook National University Hospital. The polymerase chain reaction (PCR) and restriction fragment length polymorphim (RFLP) for detecting the A1AT variants M1(Ala), M1(Val), M2, S and Z were used. RESULTS: The genotypes of subjects were as follows : M1(Val)/M1(Val), 254(66.8%) ; M1(Val)/M2, 105(27.6%) ; M2/M2, 19 (5.0%) ; and M1(Val)/M1(Ala), 2 (0.5%). There was no case with 'deficiency' alleles such as S and Z found in this study. CONCLUSION: These results suggest that A1AT deficient alleles are either extremely rare or not present in Koreans.
Alleles
;
Emphysema
;
Genotype*
;
Gyeongsangbuk-do
;
Health Promotion
;
Polymerase Chain Reaction
;
Prevalence*
10.Clinical Characteristics of Community-Acquired Viridans Streptococcal Pneumonia.
Sun Ha CHOI ; Seung Ick CHA ; Keum Ju CHOI ; Jae Kwang LIM ; Hyewon SEO ; Seung Soo YOO ; Jaehee LEE ; Shin Yup LEE ; Chang Ho KIM ; Jae Yong PARK
Tuberculosis and Respiratory Diseases 2015;78(3):196-202
BACKGROUND: Viridans streptococci (VS) are a large group of streptococcal bacteria that are causative agents of community-acquired respiratory tract infection. However, data regarding their clinical characteristics are limited. The purpose of the present study was to investigate the clinical and radiologic features of community-acquired pneumonia (CAP) with or without parapneumonic effusion caused by VS. METHODS: Of 455 consecutive CAP patients with or without parapneumonic effusion, VS were isolated from the blood or pleural fluid in 27 (VS group, 5.9%) patients. Streptococcus pneumoniae was identified as a single etiologic agent in 70 (control group) patients. We compared various clinical parameters between the VS group and the control group. RESULTS: In univariate analysis, the VS group was characterized by more frequent complicated parapneumonic effusion or empyema and bed-ridden status, lower incidences of productive cough, elevated procalcitonin (>0.5 ng/mL), lower age-adjusted Charlson comorbidity index score, and more frequent ground glass opacity (GGO) or consolidation on computed tomography (CT) scans. Multivariate analysis demonstrated that complicated parapneumonic effusion or empyema, productive cough, bed-ridden status, and GGO or consolidation on CT scans were independent predictors of community-acquired respiratory tract infection caused by VS. CONCLUSION: CAP caused by VS commonly presents as complicated parapneumonic effusion or empyema. It is characterized by less frequent productive cough, more frequent bed-ridden status, and less common CT pulmonary parenchymal lesions. However, its treatment outcome and clinical course are similar to those of pneumococcal pneumonia.
Bacteria
;
Comorbidity
;
Cough
;
Empyema
;
Glass
;
Humans
;
Incidence
;
Methods
;
Multivariate Analysis
;
Pneumonia*
;
Pneumonia, Pneumococcal
;
Respiratory Tract Infections
;
Streptococcus pneumoniae
;
Tomography, X-Ray Computed
;
Treatment Outcome
;
Viridans Streptococci