No abstract available.
Stomach Neoplasms* ; Stomach* ; Water*

To evaluate the platelet activation in vivo in the patients with coronary artery disease Indium-111 labeled autologus platelet survival time was measured. Platelet survival determinations were made according to a modified method for radioisotope platelet survival studies recommended by the Panel on Diagnostic Application of Radioisotopes in Hematology of the International Committee for Standardization in Hematology. Autologous platelets were labeled with 111 In-oxine utilizing a similar method used at the Mallinckrodt Institute of Radiology. The results are summarized as follows : 1) In the patients with coronary artery disease, especially acutemyocardial infarction, the mean platelet survival time was significantly shorter than that of the normal controls(P<0.05). 2) The mean platelet survival time did not differ significantly between patients with acute myocardial infarction and angina pectoris. 3) The mean platelet survival time did not differ significantly between nonsmoker and smoker in the patients with coronary artery disease.
Angina Pectoris ; Blood Platelets* ; Coronary Artery Disease* ; Coronary Vessels* ; Hematology ; Humans ; Infarction ; Myocardial Infarction ; Platelet Activation ; Radioisotopes

BACKGROUND: We have recently reported that airway epithelial cells can produce RANTES and IL-8 in response to the stimulation of tubercle bacilli wuggesting a certain role of airway epithelial cells in the pathogenesis of pulmonary tuberculosis. The pathogenesis of tuberculosis is determined by several factors including phagocytosis, immunological response of host, and virulence of tubercle bacilli. Interestingly, there have been reports suggesting that difference in immunological response of host according to the virulence of tubercle bacilli may be related with the pathogenesis of tuberculosis. We, therfore, studied the expressions and productions of RANTES and IL-8 in airway epithelial cells in response to tubercle bacilli(H37Rv, virulent strain and H37Ra, avirulent strain), in order to elucidate the possible pathophysiology of pulmonary tuberculosis. METHODS: Peripheral blood monocytes were isolated from normal volunteers. Peripheral blood monocytes(OBM) were stimulated with LPS(10 micrograms/ml), H37Rv, or H37Ra(5X10(5) bacilli/well) along with normal control for 24 hours. A549 cells were stimulated with supernatants of cultured PBM for 24 hours. ELISA kit was used for the measurement of TNFalpha and IL-1beta production in supernatants of cultured PBM and for the measurement of RANTES and IL-8 in supernatants of cultured A549 cells. Northern blot analysis was used for the measurement of RANTES and IL-8 mRNA expression in cultured A549 cells. RESULTS: TNFalpha and IL-1beta productions were increased in cultured PBM stimulated with LPS or tubercle bacilli(H37Rv or H37Ra) compared with the control. There was, however, no difference in TNFalpha and IL-1beta production between cultured PBM stimulated with H37Rv and H37Ra. RANTES and IL-8 expressions and productions were also increased in cultured A549 cells stimulated with LPS or tubercle bacilli compared with the control. RANTES and IL-8 mRNA expressions were significantly increased in cultured A549 cells stimulated with H37Ra-conditioned media(CM) compared with A549 cells stimulated with H37Rv-CM (p<0.05). However, there was no difference in RANTES and IL-8 productions between A549 cells stimulated with H37Rv-CM and H37Ra-CM. CONCLUSION: Airway epithelial cells can produce the potent chemokines such as RANTES and IL-8, in response to the stimulation of tubercle bacilli. These results suggest that airway epithelial cells may play a certain role in the pathogenesis of pulmonary tuberculosis. However, the role of airway epithelial cells in the pathogenesis of tuberculosis according to the virulence of tubercle bacilli was not clear in this study.
Blotting, Northern ; Chemokine CCL5 ; Chemokines ; Enzyme-Linked Immunosorbent Assay ; Epithelial Cells* ; Healthy Volunteers ; Interleukin-8 ; Monocytes ; Phagocytosis ; RNA, Messenger ; Tuberculosis ; Tuberculosis, Pulmonary ; Tumor Necrosis Factor-alpha ; Virulence*

No abstract available.
Female ; Neurilemmoma* ; Ovary*

BACKGROUND: VRE have become an emerging nosocomial pathogen in Korea, but there has not been nationwide study on the colonization of VRE among high risk groups of hospitalized patients. The purpose of this study was to determine the prevalence of rectal colonization of VRE among patients hospitalized in the intensive care unit (ICU), to study the risk factors for nosocomial acquisition of VRE among those patients, to define the genetic diversity of VRE strains in major hospitals in Korea. METHODS: Between January the 20th and 30th of 2000, a point surveillance study was conducted in the ICU of the ten large hospitals, which were located nationwide. Surveillance rectal swab cultures for detecting VRE were obtained among 214 patients admitted to the ICU during the study period. To isolate VRE, rectal swab cultures were performed on Enterococcosel(R) agar that containing 6 microgram/mL of vancomycin. Minimal inhibitory concentrations (MICs) of vancomycin and teicoplanin were determined by agar dilution method. For the genotyping of VRE isolates, the detection of vanA, vanB, vanC1 and vanC2 gene by polymerase chain reaction was done. Pulsed-field gel electrophoreis (PFGE) was used for elucidating the genetic relatedness of VRE isolates. To identify the risk factors for rectal VRE colonization, patients harboring VRE were compared to patients who were not colonized with this organism. RESULTS: The rectal colonization rate of VRE was variable from 9.7% to 51.9% according to hospital. 64 VRE strains which were isolated from 63 patients included 37 E. feacium. 26 E. gallinarum and 1 E. casseliflavus isolates. Therefore the colonization rate of clinically significant vanA type VRE was 17.3% (37/ 214). 37 E. feacium. 26 E. gallinarum and 1 E. casseliflavus isolates were presented as vanA, vanC1 and vanC2 genotypes, respectively. Risk factors for rectal VRE colonization included the presence of chronic illness, previous use of broad spectrum antibioitcs es-pecillay vancomycin, and prolonged stay in ICU. Various PFGE patterns are noted among vanA type VRE isolates, so individual acquisition of VRE during stay in the majority of ICUs were suggested. But there is some evidence of focal VRE spread within the ICU and between hospitals. CONCLUSION: This study demonstrated the high rectal colonization rate (17.3%) of clinically significant vanA type VRE among patients admitted to the ICUs of ten large hospitals located nation-widely. This study suggested that practicing HICPAC guidelines, restricted vancomycin usage and periodic surveillance cultures in patients with high risk factors are important in preventing the emergence and spread of VRE infection among ICU patients.
Agar ; Chronic Disease ; Colon* ; Genetic Variation* ; Genotype ; Humans ; Intensive Care Units ; Korea* ; Polymerase Chain Reaction ; Prevalence ; Risk Factors* ; Teicoplanin ; Vancomycin

BACKGROUND: Gated myocardial perfusion SPECT improved diagnostic accuracy of coronary artery disease and enabled us to observe motion and thickening of myocardial walls, ejection fraction as well as myocardial perfusion. Many studies suggested that there was a decrease of left ventricular ejection fraction (LVEF) at post-stress compared with that at rest gated myocardial perfusion SPECT (stunning). The objective of this retrospective study is to evaluate the clinical significance of the decrease of LVEF at post-stress gated myocardial perfusion SPECT by correlating with coronary angiographic finding. METHODS: Authors selected 41 patients who underwent exercise electrocardiography and gated myocardial perfusion SPECT between May, 2001 and May, 2002. The patients underwent coronary angiography within 6 months. The patients were divided into two groups, 16 patients in whom post-stress LVEF was >or=5% lower than rest (stunning group) and 25 patients in whom LVEF was not >or=5% lower than rest (non-stunning group). RESULTS: The number of patients with hyperlipidemia was higher in stunning group than in non-stunning group (50% vs 4%, p=0.001). The number of patients with angiographic stenoses >90% was significantly higher in stunning group than in non-stunning group (75% vs 28%, p=0.04). The number of patients with multi-vessel disease was also significantly higher in stunning group than in non-stunning group (75% vs 36%, p=0.015). CONCLUSION: The patients who had a decreased LVEF after stress (stunning) showed more severe coronary artery stenosis. This finding suggests that stunning may be an important additional indicator of underlying myocardial ischemia.
Constriction, Pathologic ; Coronary Angiography ; Coronary Artery Disease ; Coronary Stenosis ; Electrocardiography ; Humans ; Hyperlipidemias ; Myocardial Ischemia ; Myocardial Stunning ; Perfusion* ; Retrospective Studies ; Stroke Volume* ; Tomography, Emission-Computed, Single-Photon*

BACKGROUND: Syncope is a sudden and brief loss of consciousness associated with a loss of postural tone, from which recovery is spontaneous. The most frequently identified causes of syncope are neurocardiogenic, cardiac, cerebrovascular and side effects of drugs. However, in many cases, it is not easy to make a diagnosis of syncope. The prevalence rate of syncope also is variable according to the nature of the study. We investigated the prevalence rate, characteristics and triggering factors of syncope in young medical students. METHODS: We contacted 400 medical students of Kyungpook National University, Daegu, Korea, and a questionnaire on the prevalence, triggering factors, and recurrence rate of syncope was handed out. The data from 379 medical student (male 168, female 211, mean age 22.3 years) were included for further analysis. RESULTS: Fifty-eight students (15.3%) experienced syncope and female students reported higher prevalence rate than male students (20.4 versus 8.9%, p=0.002). Among 58 students with syncopal history, 22 students (male 2, female 20) experienced recurrent syncope. The students who experienced recurrent syncope were younger at first syncope than those without recurrent syncope (15.0 versus 17.3 years, p=0.039). The triggering factors of syncope were prolonged standing, warm environment, immediate standing, tiredness, emotional upset, menstruation, and so on. CONCLUSION: The prevalence rate of syncope was 15% in medical student with mean age of 22.3 years. As the syncope in female and early onset syncope showed higher rate of recurrence, more attention may prevent recurrent syncope in these cases.
Daegu ; Diagnosis ; Female ; Gyeongsangbuk-do ; Hand ; Humans ; Korea ; Male ; Menstruation ; Prevalence* ; Recurrence ; Students, Medical* ; Syncope* ; Unconsciousness ; Surveys and Questionnaires

BACKGROUND AND OBJECTIVES: The current guidelines recommend an early invasive strategy for patients suffering with non-ST segment elevation myocardial infarction (NSTEMI). However, there is still debate about the timing of revascularization in patients with NSTEMI. To analyze the clinical efficacy of the timing of revascularization, we compared the in-hospital clinical outcome of NSTEMI patients from the Korea Acute Myocardial Infarction Registry (KAMIR) between the early and selective invasive therapeutic groups. SUBJECTS AND METHODS: Between Nov. 2005 and Apr. 2007, 2762 acute NSTEMI patients (mean age=64.6+/-12.8 years, 1847 males) were enrolled in the KAMIR. The therapeutic strategy of NSTEMI was categorized into early invasive treatment (within 48 hours, Group I mean age: 63.1+/-13.1 years, 1085 males) and selective invasive treatment (Group II mean age: 66.5+/-12.1 years, 762 males). The initial clinical status and the in-hospital mortality and morbidity rate were compared between these two groups. The in-hospital outcomes were also compared between the two groups according to each level of the Thrombolysis In Myocardial Infarction (TIMI) risk score. RESULTS: There were significant differences in the mortality and morbidity rate between the groups (6.5% vs. 10.3%, respectively, p<0.001). According to TIMI risk score, there were no significant differences of mortality and morbidity for the low to moderate risk patients (5.3% vs. 7.8%, respectively, p=0.123 for the risk score 0-2, 6.4% vs. 8.7%, p=0.139 for the risk score 3-4). CONCLUSION: Early invasive treatment improves the hospital outcome for the high-risk NSTEMI patients. The use of abciximab, a low ejection fraction, a high Killip class, a high TIMI risk score and old age are the predictive factors of in-hospital mortality and morbidity.
Angioplasty ; Hospital Mortality ; Humans ; Korea ; Mortality ; Myocardial Infarction* ; Prognosis ; Thrombolytic Therapy

The aim of this study was to investigate the efficacy of simvastatin to improved lipid profiles in hypercholesterolemic Korean patients. METHODS: From 25 hospitals in Korea, 478 hypercholesterolemic patients were enrolled from November 1996 to April 1998. The inclusion criteria was hypercholesterolemia over 240 mg/dl after diet therapy for 1 month or hypercholesterolemia over 220 mg/dl in patients with definite evidence of ischemic heart disease. Simvastatin 10mg was started and doubled up to 40mg if total cholesterol level remained higher than 200 mg/dl at monthly check. Of 478 subjects, 344 patients in whom study protocol was not violated were analyzed. RESULTS: Male to female ratio was 27:73 and 47% of the subjects were in 6th decade. Hypertension, coronary artery disease, and diabetes mellitus were present in 30, 10, and 4% of the subjects. Baseline lipid profile (mean of total cholesterol-LDL-HDL-triglyceride mg/dl) was 274-185-52-188. The dose of simvastatin for 3 months was 10/10/10mg in 61% of subjects, 10/20/20mg in 21%, 10/10/20mg in 7%, and 10/20/40mg in 12%. The change of total cholesterol level(before-4wk-8wk-12wk-withdrawal 4wk) was 274-209- 205-198-250, and the maximal reduction rate was 27%. The change of LDL-cholesterol was 185-123-116-110-159, with maximal reduction rate 39%. The change of HDL-cholesterol was 52-54-56-55-54, with maximal increase rate 9%. The change of tryglyceride was 188-161- 164-162-189, with maximal reduction rate 15%. The value before/after treatment of ApoA1, ApoB, and Lp(a) was 129/129, 138/83, and 9.3/10.7, respectively. The level of LDL-cholesterol at the end of treatment was below 100mg/dl in 36% of subjects, 100-130 in 45%, 130-160 in 16%, and over 160mg/dl in 4%. The reduction rate of LDL-cholesterol was different between subjects whose LDL decreased below 100 and those whose LDL did not decrease below 130mg/dl, which suggests the existence of the individual difference of responsiveness to simvastatin. There were only 3 subjects (0.9%) who showed increase of liver enzyme over 3 times as the upper normal limit. Conclusion: Simvastatin is effective in improving lipid profiles in hypercholesterolemic Korean patients without serious side effects.
Apolipoproteins B ; Cholesterol ; Coronary Artery Disease ; Diabetes Mellitus ; Diet Therapy ; Female ; Humans ; Hypercholesterolemia ; Hypertension ; Individuality ; Korea ; Liver ; Male ; Myocardial Ischemia ; Simvastatin*

The aim of this study was to investigate the efficacy of simvastatin to improved lipid profiles in hypercholesterolemic Korean patients. METHODS: From 25 hospitals in Korea, 478 hypercholesterolemic patients were enrolled from November 1996 to April 1998. The inclusion criteria was hypercholesterolemia over 240 mg/dl after diet therapy for 1 month or hypercholesterolemia over 220 mg/dl in patients with definite evidence of ischemic heart disease. Simvastatin 10mg was started and doubled up to 40mg if total cholesterol level remained higher than 200 mg/dl at monthly check. Of 478 subjects, 344 patients in whom study protocol was not violated were analyzed. RESULTS: Male to female ratio was 27:73 and 47% of the subjects were in 6th decade. Hypertension, coronary artery disease, and diabetes mellitus were present in 30, 10, and 4% of the subjects. Baseline lipid profile (mean of total cholesterol-LDL-HDL-triglyceride mg/dl) was 274-185-52-188. The dose of simvastatin for 3 months was 10/10/10mg in 61% of subjects, 10/20/20mg in 21%, 10/10/20mg in 7%, and 10/20/40mg in 12%. The change of total cholesterol level(before-4wk-8wk-12wk-withdrawal 4wk) was 274-209- 205-198-250, and the maximal reduction rate was 27%. The change of LDL-cholesterol was 185-123-116-110-159, with maximal reduction rate 39%. The change of HDL-cholesterol was 52-54-56-55-54, with maximal increase rate 9%. The change of tryglyceride was 188-161- 164-162-189, with maximal reduction rate 15%. The value before/after treatment of ApoA1, ApoB, and Lp(a) was 129/129, 138/83, and 9.3/10.7, respectively. The level of LDL-cholesterol at the end of treatment was below 100mg/dl in 36% of subjects, 100-130 in 45%, 130-160 in 16%, and over 160mg/dl in 4%. The reduction rate of LDL-cholesterol was different between subjects whose LDL decreased below 100 and those whose LDL did not decrease below 130mg/dl, which suggests the existence of the individual difference of responsiveness to simvastatin. There were only 3 subjects (0.9%) who showed increase of liver enzyme over 3 times as the upper normal limit. Conclusion: Simvastatin is effective in improving lipid profiles in hypercholesterolemic Korean patients without serious side effects.
Apolipoproteins B ; Cholesterol ; Coronary Artery Disease ; Diabetes Mellitus ; Diet Therapy ; Female ; Humans ; Hypercholesterolemia ; Hypertension ; Individuality ; Korea ; Liver ; Male ; Myocardial Ischemia ; Simvastatin*