No abstract available.
Pneumothorax* ; Risk Factors*

Between April, 1984 and September 1988, 459 patients underwent cardiovascular surgery at the Yeungnam University Hospital. Of these, 355 cases were open heart surgeries and 104 cases were non-open heart surgeries. There were 237 patients of acyanotic congenital cardiac anomalies, 40 patients of cyanotic congenital cardiac anomalies, and 85 patients of acquired heart diseases. The sex ratio of cardiovascular diseases was represented as 1:1.3 in male and female. The age distribution was ranged from 1 day to 65 years old. The common congenital cardiovascular anomalies were ventricular septal defect (38.7%), patent ductus arteriosus (25.5%), atrial septal defect (20.7%), Tetralogy of Fallot (8.3%), and pulmonary stenosis (2.4%) in order of frequency. Among 87 acquired cardiovascular diseases, 81 patients underwent operation for cardiac valvular lesions, 51 patients had mitral valve replacement and 13 patients had aortic valve replacement and 17 patients had double valve replacement. The overall mortality of cardiovascular surgery was 3.3% and mortality of open heart surgery was 3.9%.
Age Distribution ; Aortic Valve ; Cardiovascular Diseases ; Clinical Study* ; Ductus Arteriosus, Patent ; Female ; Heart ; Heart Diseases ; Heart Septal Defects, Atrial ; Heart Septal Defects, Ventricular ; Humans ; Male ; Mitral Valve ; Mortality ; Pulmonary Valve Stenosis ; Sex Ratio ; Tetralogy of Fallot ; Thoracic Surgery

BACKGROUND: Cardiac hypertrophy is an adaptive mechanisms in response to an increased cardiac work load. Alterations in gene expression play an important role in this adaptive process. Recent investigations have indicated that the alpha-1 adrenergic stimulation in vitro induces hypertrophic change of neonatal cardiomyocytes. The signalling mechanisms of this alpha-1 agonist induced cardiomyocyte hypertrophy are largely unknown. however, recent evidence favors an effector pathway that involves phospholipase C(PLC) mediated hydrolysis of phosphatidylinositol 4,50 bisphosphate. It should be recognized that the demonstration of enhanced phosphoinositol turnover in the presence of alpha-1 adrenergic agonist in vitro does not necessarily imply that a similar response is operative in vivo. Furthermore, the role of subtypes of phospholipase C in this system should be determined. In this context, we produced in vivo cardiac hypertrophy by repeated injection of alpha-1 adrenergic agonist, phenylephrine, and tried to evaluate any change of phospholipase C subtypes by immunohistochemistry and immunoblotting technique and also measured the phosphatidylinositol hydrolyzing activity of the enzyme. METHOD: To produce cardiac hypertrophy, we injected phenylephrine 12mg/kg i.p. to the 28 female S-D rats weighing 150-250g daily for 5 days. This measures produced 22% increase of heart weight/body weight ratio. After 5 days. rats were sacrificed and hearts were rapid excised and freezed for next procedure. The immunohistochemical stainings of myocardium were carried out using monoclonal antibodies against PLC-beta1,-gamma1,-delta1 with Avidine-Biotin Complex method. Immunoblotting was done with monoclonal anti-PLC-gamma1 antibody after immnoprecipitation. The activity of PLC-gamma1 was determined in the assay mixture containing [3H] phosphatidylinositol of 20,000 cpm. The reaction was performed by incubating with resuspended immunoprecipttol of 20,000 cpm. The reaction was performed by incubating with resuspended immunoprecipitate for 10 min and supernatant was collected for -scintillation counting. RESULTS: Immunohistochemical staining demonstrated increased staining of PLC-gamma1 in the phenylephrine induced hypertrophied heart as compared with normal control heart. PLC-beta1 and-o1 did not showed any change. Elghteen out of 20 hypertrophied cardiac tissue(90%) demonstrated increased expression of the PLC-gamma1 compared with control heart tissue in immunoblotting. [3H] PI hydrolyzing activity of PLC-gamma1 in the immunoprecipitates of the hypertrophied hearts(4650+/-614 cpm) were increased consistently in 6 samples as compared with control normal hearts (2387+/-651 cpm). CONCLUSION: In the present experiments we demonstrated that Phospholipase C-gamma1 was overexpressed compared with control normal heart of rat by immunohistochemistry and immunoblotting technique and showed that the activity of this isoenzyme was elevated. Our findings of increased PLC-gamma1 expression in the alpha1-adrenergic agonist induced cardiac hypertrophy tissue suggest that the phosphatidylinositol signalling pathway is important in the genesis of cardiac hypertrophy and the isoenzyme of PLC-gamma1 may play a central role in this mechanism.
Adrenergic Agonists ; Animals ; Antibodies, Monoclonal ; Cardiomegaly* ; Female ; Gene Expression ; Heart ; Humans ; Hydrolysis ; Hypertrophy ; Immunoblotting ; Immunohistochemistry ; Myocardium ; Myocytes, Cardiac ; Phenylephrine* ; Phosphatidylinositols ; Phospholipases* ; Rats* ; Signal Transduction ; Type C Phospholipases

Rett syndrome is progressive neurodegenerative disorder in female patients, characterized by autistic behavior, mental retardation, loss of purposeful hand skills, stereotypic hand movement, breathing dysfunction, severely impaired language, ataxia, and seizure. The diagnosis of Rett syndrome is based on its characteristic clinical manifestation and course. The electroencephalographic (EEG) findings of Rett syndrome are nonspecific, but a progressive deterioration in the EEG, characterized by a slowing of background activity and spike sharp wave discharges, may be observed. We experienced one case of Rett syndrome in a 5 year old girl having mental retardation, loss of purposeful hand skills, stereotypic hand movements (clapping, washing, hand-to-mouth), breathing dysfunction (hyperventilation/apnea). Her EEG findings on Video-EEG monitoring are excessive slowing waves during awake state and frequent spike discharges from left or centrotemporal area during sleeping. We report a case of Rett syndrome with brief review of related literatures.
Ataxia ; Child, Preschool ; Diagnosis ; Electroencephalography ; Female ; Hand ; Humans ; Intellectual Disability ; Neurodegenerative Diseases ; Respiration ; Rett Syndrome* ; Seizures

No abstract available.

To elucidate the effects of dimethyl sulfoxide on of myocardial and endothelial cells in culture, the cells were exposed to 10% dimethyl sulfoxide in culture medium for 1 hour at 48 hours after cell isolation. The general morphology and the cytochemical reaction of marker enzymes for mitochondria and Golgi complexes were investigated. The results were summarized as follows 1. DMSO induced elongation and narrowing of the cells and increase of mitochondrial reaction in myocardial cells. 2. DMSO induced destruction and disruption of myofibrils in myocardial cells resulting in increase of contractile activities. 3. In the endothelial cells, DMSO suppressed proliferative activities but thiamine pyrophosphatase reactions were enhanced indicating increase of Golgi complex activity. 4. DMSO seemed to hamper with the adhesiveness and motility of the endothelial cells causing the decrease of the number of cells in vitro.
Adhesiveness ; Cell Separation ; Dimethyl Sulfoxide* ; Endothelial Cells* ; Golgi Apparatus ; In Vitro Techniques ; Mitochondria ; Myofibrils ; Thiamine Pyrophosphatase

No abstract available.
Empyema*

To determine the degree of variability among the host plant species in their abilities to become colonized by arbuscular mycorrhizal fungi (AMF), the inoculum for AMF was collected from the various sites in Korea and was inoculated to the three horticultural plants; Tagetes patula, Torenia fournieri, and Salvia splendens. After 4-month growth under greenhouse, mycorrhizal root colonization rates and spore density were measured. The roots of T. patula showed higher colonization rate than both plants of T. fournieri and Salvia splendens. The mycorrhizal root colonization was influenced by both of the AM fungal inoculum and the host species or their interactions. The combination of the host and fungal species was suggested to be important for the application of AMF to horticultural crops.
Colon ; Fungi ; Korea ; Plants ; Salvia ; Spores ; Tagetes

Residual biliary stone can be effectively treated by nonoperative procedure using steerable catheter andbasket in the recent year. We analysed the 27 cases of residual biliary stone, which were refered to radiologydepartement of Yonsei University during last 2 years, from June 1982 to June 1984. The results as follows; 1. Thelocation of residual stones are extrahepatic in 14 cases (51.9%), intrahepatic in 5 cases(18.5%) and both intraand extrahepatic duct in 8 cases(29.6%). 2. In 13 of 27 cases(48.1%) were required multiple sessions. 3.Fragmentation of stone was done in 16(59.3%) in 27 cases. 4. Success rate in extrahepatic duct is 13 in 14casese(92.6%), intrahepatic duct 3 cases in 5(60%), and both intra and extrahepatic duct 7 in 8 cases(87.5%).Overal success rate in 27 cases is 85.2%
Catheters

The Marfan syndrome is a generalized connective tissue disease involving eye, musculoskeletal system, cardiovascular system, and inherited autosomal dominant with various expression type. The cardiovascular complications such as aortic aneurysm, aortic dissection, aortic regurgitation, mitral regurgitation and aortic dissection which usually occurs in previously normal sized aorta are poor prognostic factors. However, the aortic dissection which developed in patient with Marfan syndrome and aortic aneurysm was rare. We experienced one case of dissecting aneurysm in patient diagnosed as previous aortic aneurysm, aortic regurgitation, and Marfan syndrome, receiving successful operation.
Aneurysm, Dissecting ; Aorta ; Aortic Aneurysm* ; Aortic Valve Insufficiency ; Cardiovascular System ; Connective Tissue Diseases ; Humans ; Marfan Syndrome* ; Mitral Valve Insufficiency ; Musculoskeletal System