No abstract available.
Cholangiocarcinoma*

BACKGROUND: It has been found that sterss challenge with heat shock produces the acquisition of cellular resistance to ischemin injury in the hearts, which is associated with stress protein induction. The conventional heat shock(42degrees C of rectal temperature for 15min, anesthetized animal), however, is strong enough to endanger the animal life and then not suitable for practiocal application in human. The present study was performedd in an attempt to search the safely applicabel stress modalities to acquire the myocardial tolerance to ischemia-reperfusion in jury. METHODS: Male, Sprague-Ddawley rats(200-250g) were exposed to various stressful conditions, such as heat stimulation(environmental temperature of 42degrees C for 30min, live animal), swimming(20min), immobilization(60min), treadmill exercise(20M/min, 30min) and hyperbaric oxygenation(3atm, 60min) given once a day for 5 days. Twenty-four hours after the last application the hearts were isolated and perfused with oxygenated Krebs-Henseleit buffer solution by Langendorff method. Ischemia-reperfusion injury was produced by 20 min-global ischemia followed by 30 min-reperfusion. Cardiac mechanical function, lactate dehydrogenase release, the induction of stree proteins were assayed and compared dbetween the stressed dand the control animals. RESULTS: Upon reperfusion after ischemia the recovery of cardiac function was significantly improved in the stressed animals. The percentile recovery at 30min of reperfusion was in a range from 55.3%(swimming) to 89.3%(treadmill exercise), which was significantly higher than that of the control hearts(38%). The functional recovery of the conventional heat shocked heart was 57.7%. In stressed animals, lactate dehydrogenase release, which indicates myocardial cell injury, was significantly reduced by 20 to 30% compared to that for the control. The expression of an inducible form of 70 series stress protein, SP72, which was assayed by immunoblotting method, was markedly increased by heat stimulation while the other stress modalities failed to increase, it. There were no appreciable inductions of SP73(constitutive form) and GRR78 in the stressed animals. CONCLUSION: These results suggest that the cardiac protection from the ischemia-reperfusion injury could be induced by the repetitive non-fatal stress stimulations and that SP70 family proteins may be partly involved in the cardioprotective effect produced by heat stimulation, but not play the essential roles in anti-ischemic effects produced by other stress modalities.
Animals ; Heart* ; Hot Temperature ; Humans ; Immunoblotting ; Ischemia ; L-Lactate Dehydrogenase ; Male ; Oxygen ; Rats* ; Reperfusion ; Reperfusion Injury ; Shock

BACKGROUND AND OBJECTIVES: Studies in patients with mitral valve prolapse syndrome (MVPS) have shown the coexistence of various forms of autonomic dysfunction, and so this is an area that requires further investigation. METHODS AND MATERIALS: The study group consisted of 65 patients (36 men and 29 women), aged 16 to 43 years (mean+/-SD, 28+/-8) with symptomatic, echocardiographically proven mitral valve prolapse (MVPS) who were free of other organic heart diseases and arrhythmias. In a prospective study, heart rate variability (HRV) indexes were calculated from 24-hour Holter recordings obtained during normal daily activity and plasma norepinephine was measured, and then these data were compared among the study group according to clinic heart rate (HR). RESULTS: The study group was divided into below 60 bpm (group 1: n=13), 60 - 80 bpm (group 2: n=36) and over 80 bpm (group 3: n=16) on the basis of clinic HR. These patient groups were matched with respect to age and gender. There were significant difference in SDNNIDX, rMSSD and pNN50 between these groups (p=0.005, 0.009 and 0.002 respectively), and these HRV measures correlated inversely with clinic HR (p<0.01). As clinic HR increased, there was a tendency for plasma norepinephrine concentration to also rise (p<0.05), but there was no statistical significant difference between these groups. CONCLUSION: Our data suggests that MVPS may have subgroups of HRV, reflecting cardiac autonomic modulation, according to clinic HR.
Arrhythmias, Cardiac ; Heart Diseases ; Heart Rate* ; Heart* ; Humans ; Male ; Mitral Valve Prolapse* ; Mitral Valve* ; Norepinephrine ; Plasma ; Prospective Studies

No abstract available.
Hospitals, General* ; Humans ; Outpatients*

No abstract available.
Adult* ; Atherosclerosis* ; Cholesterol* ; Humans ; Korea*

Renal bacterial infection spans a continuum of severity from uncomplicated acute pyelonephritis through progressively worsening stages of interstitial inflammation to abscess formation. This study was done to evaluate CT findings in acute bacterial renal infection and correlation of clinical symptoms and renal scarring with CT findings. We studied 58 cases of acute pyelonephritis who were diagnosed clinically. Most of them had prolonged fever( >72 hours) and some of them suspected severe renal infections. We classified the patients regarding to CT findings. 58 cases were grouped into, 1) Group I (7 cases), normal or renal enlargement only; 2) Group II(31 cases), wedge-shaped lesions ( focal or diffuse) , 3) Group III(6 cases), focal mass-like lesions; 4) Group W(9 cases) , diffuse ( multifocal) mass-like lesions; 5) Group V (5 cases) , renal abscesses. There was the good correlation between the clinical parameters ( duration of fever, duration of hospitalization) and CT findings (P < 0.05). However, another clinical parameters(maximum temperature, duration of fever) were lacked correlation with CT findings(P >0.05). To demonstrate the presence of renal scar, we recommended DMSA scan in 15 cases of ABN (Group III and Group IV). 8 cases were performed DMSA scan and renal scar formation was found in 3 cases( 2 cases in Group III and another 1 case in Group IV). Because the size of abscess was small( <3cm), the patients of renal abscess(5 cases) were treated with antibiotics only and their clinical symptoms were improved. Second CT scanning was performed in 3 cases and their CT findings showed resolution of renal abscess. We concluded that computed tomography is selectively indicated in acute renal bacterial infection for the detection of acute renal inflammatory disease and for defining the extent of disease for planning of treatment.
Abscess ; Anti-Bacterial Agents ; Bacterial Infections ; Cicatrix ; Fever ; Humans ; Inflammation ; Pyelonephritis ; Succimer ; Tomography, X-Ray Computed

No abstract available.
Mucocutaneous Lymph Node Syndrome*

No abstract available.
Blood Pressure* ; Body Mass Index*

No abstract available.

No abstract available.
Ethmoid Bone* ; Meningitis, Bacterial*