No abstract available.

BACKGROUND: Williams syndrome is characterized by supravalvular aortic stenosis, mental retardation and peculiar facial appearance. Its genetic etiology is considered to be hemizygotic deletion in Chromosome 7q11.23 which includes the elastin gene. We examined the deletion in Korean Williams syndrome patients and their parents. MATERIALS AND METHOD: Sixteen patients were selected through careful clinical examination including echocardiography and cardiac angiography. Hemizygotic deletion of elastin gene was determined in patients and 21 parents with fluorescent in situ hybridization (FISH) technique using the bacterial artificial chromosome clone 244H3 probe or commercial WSCR probe. RESULTS: FISH showed hemizygotic deletion of chromosome 7 in all sixteen patients but none of their parents showed deletion. CONCLUSION: Hemizygotic deletion of elastin gene can be determined by FISH with new probe 244H3 in clinically suspected Williams syndrome patients.
Angiography ; Aortic Stenosis, Supravalvular ; Chromosomes, Artificial, Bacterial ; Chromosomes, Human, Pair 7 ; Clone Cells ; Echocardiography ; Elastin* ; Humans ; In Situ Hybridization, Fluorescence* ; Intellectual Disability ; Parents ; Williams Syndrome*

No abstract available.
Adenoma*

No abstract available.
Ventilators, Mechanical*

A survey was performed from April 1978 to Oct. 1978, on the high blood pressure of workers employed at industries in Busan area in order to seek for the environmental factors on blood pressure. The number of workers surveyed in the manufacturing industries occupied 72.4 percent of the total. By the age group of all workers, 39.9 percent belonged to the 20-20 year group. For the age distribution and sex of the workers, the highest frequency was found in the 20-29 year group in both sexes and was 36.8% and 46.1% in male and female, respectively. The prevalence rate of hypertension among the workers was 15.9. The industries showing the highest prevalence rate equivalent to wholesale, retail trades, restaurants, and hotels. This survey presented a tendency of increasing prevalence rate as the age increases.
Age Distribution ; Blood Pressure ; Busan* ; Female ; Humans ; Hypertension* ; Male ; Prevalence ; Restaurants

No abstract available.

No abstract available.
Heart Failure* ; Heart*

No abstract available.

BACKGROUND: Oxygen free radicals may play important role in coronary reperfusion resulting in cell death or dysfunction, and they believed that one specific mechanism for producing oxygen free radicals in myocardium is the xanthine oxidase system. Allopurinol, inhibitor of xanthine oxidase system, may limit myocardial dysfunction and injury produced by oxygen free radicals during coronary reperfusion. METHODS: Thirty isolated rabbit hearts undertook the retrograde nonworking perfusion for 15 minutes and followed by 15 minutes of working mode. After measurement of the hemodynamic values as baseline, all heart were arrested with cold cardioplegic solution for 60 minutes. Hearts were then revived with 15 minutes period of nonworking reperfusion, followed by 30 minutes of working reperfusion. The hemodynamic values were measured again at 20 minute of working period and expressed as percent of baseline values. Oxygen content of arterial perfusate and coronary effluent were measured and leakage of creatine kinase was measured from coronary effluent for 15 minutes of nonworking reperfusion. Wet and dry weight of the heart were obtained to determine for tissue water and water content. Animals were randomized as followings ; control(n=10), allopurinol PO(n=10, 100mg/kg before 24hr.), allopurinol IV(n=10, 10mg/kg before 1 hr.) RESULTS: 1) There were no significant differences in recovery of aortic pressure and heart rate between 3 groups. But there were significant differences in percent recovery of aortic flow, coronary flow, cardiac output and stroke volume between control group and allopurinol groups. 2) The leakage of creatine kinase following ischemic arrest was significantly lower in the allopurinol groups than the control group(control : 36.8+/-6.2IU, PO:19.7+/-3.1IU, IV : 22.2+/-4.6IU, p<0.001). 3) The allopurinol groups were significantly increased in oxygen extraction and oxygen consumption compared with the control((p<0.002, p<0.004)). 4) The tissue water and water content were significantly diminished in the allopurinol groups compared with the control group(p<0.003, p<0.001). 5) The electron micrograph showed more considerable structural damages of myocardial cell in the control group than the allopurinol groups. CONCLUSION: It is suggested from the results that allopurinol, inhibitor of xanthine oxidase, plays a inhibiting role in the production of oxygen free radicals, and improves myocardial protection during global ischemia and reperfusion in the isolating working rabbit heart model.
Allopurinol* ; Animals ; Arterial Pressure ; Cardiac Output ; Cardioplegic Solutions ; Cell Death ; Creatine Kinase ; Free Radicals ; Heart Rate ; Heart* ; Hemodynamics ; Ischemia ; Myocardial Reperfusion ; Myocardium ; Oxygen ; Oxygen Consumption ; Perfusion ; Reperfusion ; Stroke Volume ; Xanthine Oxidase

No abstract available.