Author performed this experiment to define the most important factor preventing the intimal thickening. An endothelium of abdominal aorta in the rat was denuded by two different wires having same caliver. The degree of injury was limited to the endothelial cells in one, and extended to the internal elastic lamina in another. The results showed that at 72 hours, in the case of superficial injury, the entire injury site was covered by new regenerating cells, but in the case of disruption of the internal elastic lamina, the migrating smooth muscle cell completely reached into the intima and resulted in intemal thickening. Similar findings persisted to 1 week later. Above results suggest the most important factor preventing the intimal thickening in endothelial injury is the depth of the injury which limited within the endothelial cells without extending into the internal elastic lamina and medial smooth muscle cells.
Rats ; Animals

Hemangiopericytoma is a rare vascular tumor arising from pericytes. The tumor usually develops in the skin or subcutaneous tissue, particularly in the extremities.4 pulmonary origin of hemangiopericytoma is known to be quite rare. It has the potential to become a highly malignant lesion, so wide excision is the treatment of choice. We present a case of primary malignant hemangiopericytoma of the lung and discuss the clinical symptoms, diagnosis, therapy and prognosis within the context of a brief review.
Diagnosis ; Hemangiopericytoma* ; Lung* ; Pericytes ; Prognosis ; Skin ; Subcutaneous Tissue

BACKGROUND: Inflammatory bowel disease(IBD) such as ulcerative colitis or Croln's disease is often related with varied diseases including pyoderma gangrenosum, erythema nodosum, ankylosing arthritis and psoriasis. To date, however, a cIinical observation of IBD accompanied by psoriasis has been sparcely accomplished although an immunogenetic mechanism explaining a coexistence of IBD and psoriasis has been proposed. OBJECTIVE: We estimated the prevalence of IBD in patients with psoriasis in Korea and investigated the clinical characteristics of IBD accompanied by psoriasis. METHODS: 92 psoriatic patients and 389 non-psoriatic control subjects were enrolled in this study. Colonoscopic biopsy and barium series were performed in 47 psoriatic patients and 110 control subjects showing irritative intestinal symptoms. RESULTS: 1. The prevalence of IBD in psoriatic patients(14.1%) was significantly greater than in the control group(1.0%). 2. In the temporal relationship, psoriasis developed several years prior to the onset of IBD in 84.6% of psoriatic patients. 3. The frequency of arthropathies in the psoriatic patients possessing IBD(84.6%) was significantly higher than that of non-psariatic counterparts with IBD(25.0%) or that of psoriatics without lBD(2.5%), 4. The psoriatir. patients with IBD demonstrated much more frequently diffuse colonal extension than in non-psoriatic subjects with IBD. CONCLUSION: Our findings of an increased prevalence of IBD in the psoriatic population present further evidence of an association between IBD and psoriasis. In the psoriatic patients showing acute or chronic gastrointestinal symptoms, colonoseopic evaluation might be mandatory for the evaluation of IBD.
Arthritis ; Barium ; Biopsy ; Colitis, Ulcerative ; Colon ; Erythema Nodosum ; Humans ; Immunogenetics ; Inflammatory Bowel Diseases* ; Korea ; Prevalence ; Psoriasis* ; Pyoderma Gangrenosum

BACKGROUND: Reticulocyte counts provide clinically useful informations and the most widely used method for counting reticulocytes is a manual microscopic procedure. Although manual method is inexpensive and relatively simple to perform, it is labor intensive and imprecise. So, more rapid and more reproducible methods are needed. METHODS: Reticulocyte counts on 96 blood samples were performed by conventional manual method, H*3 RTX(TM)(Bayer, U.S.A.), and FACScan(TM)(Beckon Dickinson, U.S.A.). The changes of reticulocyte count after storage of samples and certain time intervals after preparation were also examined. RESULTS: Reticulocyte counts(%) by manual method, H*3 RTX(TM), and FACScanM were 2.05+/-2.16, 1.95+/-2.24 and 2.51+/-1.94, respectively. There was no statistically significant differences between manual counting and H*3 RTX(TM)(P>0.05). However, there were significant differences between H*3 RTX(TM) and FACScan(TM), manual counting and FACScan(TM)(P<0.05). Correlation coefficients of three comparisons were all above 0.920. Statistically not confirmed the reticulocytosis sample showed decreasing tendency of reticuocyte count by H*3 RTX(TM) after storage of the sample and prepared sample and others were relatively stable in H*3 RTX(TM)and FACScan(TM). CONCLUSIONS: The result of the mean difference between H*3 RTX(TM) and manual counting is statistically insignificant. So, the H*3 RTX(TM)can be used interchangeably with manual counting atter consideration of cost-effectiveness.
Reticulocyte Count ; Reticulocytes* ; Reticulocytosis

Medicolegal autopsies are a vital tool for obtaining reliable injury mortality data. This study statistically analyzed the data obtained from medicolegal autopsies performed in Korea in 2014. A total of 5,324 deaths were analyzed by sex, age, manner of death, and cause of death. With respect to the manner of death, 56.3% were recorded as unnatural deaths, 38.4% were natural deaths, and 5.3% had unknown causes. Of the 2,998 unnatural deaths, 41.0% were determined to be accidental deaths; 28.1%, suicidal; 16.1%, homicidal; and 14.8%, undetermined. Of the total number of unnatural deaths, 38.8% were trauma-related, wherein falls accounted for 32.7%. Asphyxiation accounted for 16.3% of unnatural deaths; of these, the predominant cause was hanging (59.4%). In addition, 15.0% of the unnatural deaths were due to drowning; 14.8%, poisoning; 11.3%, thermal injuries; 2.5%, complications arising from medical procedures; and 0.4%, electrocution, starvation, or neglect. Among the 2,042 natural deaths, heart diseases accounted for 49.0% and vascular diseases accounted for 17.3%. Of the 170 deaths among children under the age of 10, 38.8% were recorded as unnatural deaths, 54.1% were natural deaths, and 7.1% had unknown causes.
Autopsy* ; Cause of Death ; Child ; Data Interpretation, Statistical ; Drowning ; Heart Diseases ; Humans ; Korea* ; Mortality ; Poisoning ; Starvation ; Vascular Diseases

Progression of coronary artery disease after angioplasty seemed to be an important determinant of the long term efficacy of percutaneous transluminal coronary angioplasty(PTCA). In fifty seven patients who underwent coronary angiography beyond 1 month of PTCA, progression of coronary artery disease was evaluated and clinical and angiographic variables that might predict the progression after PTCA were sought. At the time of the repeat study, restenosis(>50% loss of PTCA gained diameter or >50% diameter stenosis) was found in 35 patients(61%) and progression(increasing >20% obstruction in coronary diameter or newly occurred total occlustion) was found in 20 patients(35%). Progression occurred similarly both in patients with restenosis(12 of 3, 35%) and in patients without restenosis(8 of 22, 36%). Within 6 months of PTCA, restenosis was found in 82%(23 of 28) and progression in 36%(10 of 28) and beyond 6 months, restenosis in 41%(12 of 29) and progression in 34%(10 of 29). Progression tended to occur more commonly in the artery which was dilated(10 of 60,17%) than in the artery that was not dilated(10 of 111, 9%), but this observation did not reach statistical significance. The influence of the risk factors on the progression was evaluated and progression appeared to be correlated with the initial extent of coronary artery disease and high low-density lipoprotein/high-density lipoprotein cholesterol ratio at follow-up study. Furthermore, the low-density lipoprotein/high-density lipoprotein cholesterol ratio at follow-up study was significantly higher in patients with progression in nondilated artery than that of those without progression, but there was no significant difference between patients with progression in dilated artery and patients without progression. In this study, we found that the incidence of progression was not rare within 6 months of PTCA as beyond 6 months. In addition, the incidence of progression in dilated vessels was not significantly higher than that in nondilated vessels, but high low-density lipoprotein/high-density lipoprotein cholesterol ratio was associated only with progression in non-dilated vessels, so trauma in dilated artery during PTCA might predispose the patients with low risk to the progression of coronary artery disease. Conclusively, PTCA may accelerate the progression of coronary artery disease. And the consistent relation between PTCA and progression of coronary artery disease requires further evaluation with more patients and prospective protocol.
Angioplasty ; Angioplasty, Balloon, Coronary* ; Arteries ; Cholesterol ; Coronary Angiography ; Coronary Artery Disease* ; Coronary Vessels* ; Follow-Up Studies ; Humans ; Incidence ; Lipoproteins ; Risk Factors

No abstract available.
Aging*

BACKROUND: Polymorphism of glycoprotein IIIa on human platelets is one of the factors in alloimmunization that causes neonatal alloimmune thrombocytopenia (NATP), and the granulocyte antigens NA1 and NA2 are often targets of granulocytes antibodies causing neonatal alloimmune neutropenia (NANP). Currently, serotyping relies on the properties of the typing sera or antibodies and technique used. Genotyping circumvents the problems associated with serotyping. METHODS: The genomic DNA of 200 unrelated pregnant women admitted to Taegu Fatima Hospital was typed for three platelet glycoprotein IIIa-specific antigens (HPA-1, HPA-4, and HPA-6w) and granulocyte antigens (NA1 and NA2). Allele specific amplification test using primer designed to study HPA-1 and HPA-4, restriction fragment length polymorphism to study HPA-6w, and sequence specific primers for NA1 and NA2 were used for genotyping. RESULTS: The genotype frequencies were HPA-1(a+b-) 100%, HPA-4 (a+b-) 97.5%, HPA-4(a+b+) 2.5%, HPA-6w(a+b-) 97%, and HPA-6w(a+b+) 3%. These frequencies are similar to Japanese but different from Caucasian. The gene frequencies of NA1 and NA2 were 0.56 and 0.44 respectively. There are no cases of alloimmune thrombocytopenia and neutropenia in newborns from the 200 studied women. CONCLUSIONS: The differences in genotype frequencies among platelet glycoprotein IIIa-specific antigens and in the gene frequencies of NA in Koreans are shown as compared with other ethnic groups. Therefore it is needed to find the proper screening target antigens and antibodies for Korean NATP and NANP patients.
Alleles ; Antibodies ; Antigens, Human Platelet ; Asian Continental Ancestry Group ; Blood Platelets* ; Daegu ; DNA ; Ethnic Groups ; Female ; Gene Frequency ; Genotype* ; Glycoproteins* ; Granulocytes* ; Humans ; Infant, Newborn ; Mass Screening ; Neutropenia ; Polymorphism, Restriction Fragment Length ; Pregnant Women ; Serotyping ; Thrombocytopenia ; Thrombocytopenia, Neonatal Alloimmune

This paper refers to the History on the Lecture of History of Medicine at Kyungpook National University School of Medicine since 1961 when assistant professor KIM Jyung-Myung, MD of Department of Clinical Pathology started this lecture of history of medicine to the freshman class to improve the medical morality among professors, students and physicians after the nation-wide 4 19 revolution against dictatorial government. At that time an immoral faculty and several government patronized faculties were expulsed by students on the above revolution. On the lecture dictation was used for the first time and merged to prints(KIM Jay-Sik, MD and KIM Jyung-Myung, MD), followed by published textbook(1979, revised on 1986) of Professor KIM Jyung-Myung. However our department faculties haven't entered the Korean Society for the History of Medicine until this time because of short of manpower and lack of the independent department(Department of History of Medicine). We are going to set up the Department at our Medical School in 1998 and to study about the improvement of medical education through the lecture of the history of medicine on the comparison of the current oriental and western medicine, and the unification of Korean medical system(modern medicine and Chinese medicine).

BACKGROUND: Recently, the incidence of acute myocardial infarction increased with prolongation of life spans, improvements in food and life styles in Korea, But only few studies were reported after the newly developed diagnostic methods and treatment modalities were introduced. So, the study on left ventricular ejection fraction, findings in coronary angiography, uses of thrombolytic agents was needed. METHOD: A retrospective clinical study was done on 654 patients with acute myocardial infarction who had been admitted to Severance hospital from January 1985 to December 1991 within 30 days after the onset of symptoms. Coronary angiogram and radionuclide ventriculography was done as usual methods. RESULT: The mean age was 58.5 years, and the ratio of males to females was 3.3:1, The major risk factors were smoking, hypertension and diabetes mellitus in males. and hypertension, diabetes mellitus and obesity in females. Arrhythmias were found in 360 patients(56.4%). The most frequent arrhythmia was premature ventricular contraction. Sinus bradycardia and atrioventricular were more frequent in inferior infarction but sinus tachycardia, ventricular tachycardia were more frequent in anterior infarction. The peak serum CK and CK-MB levels were higher in patients of anterior infarction than in those of inferior and non-Q wave infarction. The left ventricalar ejection fractions were higher in the patients with non-Q wave infarction, inferior infarction than in the patients with anterior infarction. There was no difference in left ventricular ejection fraction between patients who received thrombolytic therapy and not treated patients. Coronary angiograms were performed in 362 patients and 184 patients (50.8%) had one-vessel disease. The short-term mortality rate was 15.1%. The most common cause of death was cardiogenic shock(60.6%). Poor prognosis was found in patients with a history of previous myocardial infarction, those over 60 years old, those with a complete heart block and those of the female sex. The short-term mortality was higher in anterior infarction than inferior infarction and short-term mortality was higher in Q wave infarction than non-Q wave infarction. CONCLUSION: This study suggests that smoking was the most common risk factor but hypercholesterolemia and obesity were less significant. According to coronary angiogram, one-vessel disease was the most common, and the rate of insignificant reduction in luminal diameter was higher than western countries. The short-term mortality rate of acute myocardial infarction was higher than those of western countries. The cause of high mortality rate was considered due to delay in transportation of patients to hospital. The education about acute myocardial infarction should be done to public and transportation system must be improved.
Adult* ; Arrhythmias, Cardiac ; Bradycardia ; Cause of Death ; Coronary Angiography ; Diabetes Mellitus ; Education ; Female ; Fibrinolytic Agents ; Heart Block ; Humans ; Hypercholesterolemia ; Hypertension ; Incidence ; Infarction ; Korea ; Life Style ; Life Support Care ; Male ; Middle Aged ; Mortality ; Myocardial Infarction* ; Obesity ; Phenobarbital ; Prognosis ; Radionuclide Ventriculography ; Retrospective Studies ; Risk Factors ; Smoke ; Smoking ; Stroke Volume ; Tachycardia, Sinus ; Tachycardia, Ventricular ; Thrombolytic Therapy ; Transportation ; Transportation of Patients ; Ventricular Premature Complexes