Immunoblot analysis utilizing bovine sera from naturally or experimentally infected with Theileria sergenti were used to determine the immunodominant polypeptides of T. sergenti (Korea isolate).The previously recognized major bands, 18 kDa, 29 kDa, 34 kDa, and 45 kDa, were excised after electrophoresis and trasferred to PVDF membrane. The individual bands were sequenced. The 34 kDa polypeptide which was the most antigenic and immunogenic peptide was observed in the Western blot. However, Chou-Fasman prediction sites (antiginic site) for antigen determinants of the 45 kDa,34 kDa, 29 kDa and 18 kDa polypeptide were 6, 4, 2 and 0, respectively. However, the 45 kDa polypeptide showed no reaction with anti-T. sergenti hyperimmune serum.
parasitology-protozoa ; Theileria sergenti ; amino acid sequence ; synthetic peptide ; predicted antigenic value ; amino acid

OBJECTIVES: Hemodynamic measurements of chronic portal hypertension were done to study the mechanisms that maintain high portal pressure despite well developed collateral circulations. METHODS: A prehepatic portal hypertensive rat model was produced by partial portal vein ligation. Cardiac output, organ blood flow and porto-systemic shunt were measured by radioisotope labeled microsphere methods, and vascular resistance was calculated by standard equation. RESULTS: There was a significant reduction in the weight of the liver and increase in the weight of the spleen in the portal stenotic rats. Porto-systemic shunting, representing development of the collateral circulations, was 96.7+/-0.6% in the portal stenosis group compared with 0.9+/-0.2% in the control group (p<0.01). Portal pressure was significantly increased in the portal stenosis group compared with the control group(12.8+/-1.4 vs. 6.5+/-0.6mmHg; p<0.01). Mean arterial pressure was significantly decreased in portal stenosis group compared with control group(101.4+/-2.5 vs, 129.9+/-3.9mmHg; p<0.01). In the portal stenosis group, cardiac output(135.7+/-8.0 vs. 111.0+/-4.2ml/min; p<0.01) and splanchnic organ blood flow (28.97+/-2.03 vs. 17.90+/-1.27ml/min, p<0.01) were significantly increased, with concomitant decrease in total peripheral vascular resistance(58.0+/-3.3 vs. 88.2+/-4.8 dyne sec/cm5 X 105; p<0.01) and splanchnic vascular resistance(2.54+/-0.20 vs. 5.47+/-0.33 dyne sec/cm5 X 105; p<0.01), However, the portal venous resistance was not significantly different in both groups of rats (3.57+/-0.31 vs. 3.03+/-0.38 dyne sec/cm5 X 105; p>0.05). CONCLUSION: The hemodynamic results of this study indicate that hyperdynamic status of systemic and splanchnic circulation was present in chronic portal hypertension and that the primary factor contributing to the persistently elevated portal venous pressure was the markedly increased portal venous inflow.
Animals ; Arterial Pressure ; Cardiac Output ; Collateral Circulation ; Constriction, Pathologic ; Hemodynamics* ; Hypertension, Portal ; Ligation ; Liver ; Microspheres ; Models, Animal* ; Portal Pressure ; Portal Vein* ; Rats* ; Splanchnic Circulation ; Spleen ; Vascular Resistance

From January 1988 to December 1994, endoscopic sphincterotomy with stone extraction was attempted in 395 patients with common duct stones at Yeungnam University Hospital. Endoscopic sphincterotomy was successful in 389 patients(98.5 %), and clearance of the duct was achieved in 364 patients with an overall success rate of 92.2%. After sphincterotomy, stone extraction by basket or balloon was undertaken in 298 patients without lithotripsy, and stones could be extracted after fragmentation of stones in 19 patients. In 47 patients, stones were passed into duo denum spontaneously. There were 6 cases of sphincterotomy failure due to large periampullary diverticulum or previous gastrojejunostomy. In patients with success ful sphincterotomy, endoscopic stone extraction was failed in 25 cases due to 14 large stones, 5 bile duct strictures, 4 impacted stones, and 2 cases of technical fail ure. Complications were developed in 13 patients(3.3%); 8 pancreatitis and 5 bleedings. All of them were improved with medical therapy only. Despite relatively high success rate and low complications of the endoscopic management of choledocholithiasis, there were significant difficulties in removing large stones. Developement of more effective and inexpensive methods of lithotripsy, and the search for rapidly effective solvent dissolving stones were needed.
Bile Ducts* ; Bile* ; Cholangiopancreatography, Endoscopic Retrograde ; Choledocholithiasis ; Constriction, Pathologic ; Diverticulum ; Gastric Bypass ; Humans ; Lithotripsy ; Pancreatitis ; Sphincterotomy, Endoscopic

A study carried out to evaluate the bleeding control and prophylactic effect of rebleeding using emergency endoseopic sclerotherapy in patients with hleeding gastric varices. 42 patients with gastric variceal bleeding were admitted to the Yeungnam University Hospital from May, 1983 to August, 1992. Patients were randomly classified into control group, 20 patients treated with conservative management, and sclerotherapy group, 22 patients treated with emergency endoscopic sclerotherapy. The two group were analysed with age, sex, etiology of liver cirrhosis, nature of bleeding episode, hematocrit on admitting day, amount of sclercsants used, rebleeding episodes, complications, and mortality. There were no significant differences in the severity of underlying liver disease and hematocrit on admission between two groups. Blood transfusion were performed in 19 cases of control group and 21 cases in sclerotherapy group(p>0.05). The amounts of transfusion were 7. 7units in control group and 6.1 units in sclerotherapy group(p<0,05). Rebleeding were developed in 65% and 18% of the patiehts with control and sclerotherapy group, respectively(p<0.05). Chest pain and mild fever were observed after endoscopic sclerotherapy. These results suggest that the endoscopic sclerotherapy is effective method in hemostasis of bleeding gastric varices and short-term prevention of rebleeding, but mortality rate was not decreased compared to control group. Development of more effective methods to treat gastric variceal bleeding is required.
Blood Transfusion ; Chest Pain ; Emergencies ; Esophageal and Gastric Varices* ; Fever ; Hematocrit ; Hemorrhage* ; Hemostasis ; Humans ; Liver Cirrhosis ; Liver Diseases ; Mortality ; Sclerotherapy*

BACKGROUND/AIMS: Acute suppurative cholangitis is associated with significant mortality. It is best managed by drainage of biliary tree such as endoscopic, percutaneous or surgical, We evaluated the role of emergency endoscopic nasobiliary drainage(ENBD) in the acute suppurative cholangitis. METHODS: For 55 patients with acute calculous cholangitis, who did not respond to conservative management and the stone could not be removed from bile duct by endoscopic papillotomy due to poor condition or bleeding tendency, ENBD tube(7.5Fr) was inserted at proximal side of obstruction. ENBD was done at 39.4 hours (mean) after arrival to hospital. RESULTS: ENBD was successful in all patients (100%). All patients responded with striking improvement of the abdominal pain, fever and stabilized vital signs within 3 days. After patients conditions were stabilized clinically, common bile duct stones were removed successfully by endoscopic sphincterotomy or surgery. No patients died of acute suppurative cholangitis. CONCLUSION: These results show that ENBD is a simple, safe, and effective measure for the initial control of acute suppurative cholangitis due to cholelithiasis.
Abdominal Pain ; Bile Ducts ; Biliary Tract ; Cholangitis* ; Cholelithiasis ; Common Bile Duct ; Drainage* ; Emergencies* ; Fever ; Hemorrhage ; Humans ; Mortality ; Sphincterotomy, Endoscopic ; Strikes, Employee ; Vital Signs

The purpose of this study was to provide a basis for studying the molecular mechanism of pharmacological action of chlorhexidine digluconate. Large unilamellar vesicles (OPGTL) were prepared with total lipids extracted from cultured Porphyromonas gingivalis outer membranes (OPG). The anthroyloxy probes were located at a graded series of depths inside a membrane, depending on its substitution position (n) in the aliphatic chain. Fluorescence polarization of n- (9-anthroyloxy)stearic acid was used to examine effects of chlorhexidine digluconate on differential rotational mobility, while changing the probes' substitution position (n) in the membrane phospholipids aliphatic chain. Magnitude of the rotational mobility of the intact six membrane components differed depending on the substitution position in the descending order of 16- (9-anthroyloxy)palmitic acid (16-AP), 12, 9, 6, 3 and 2- (9-anthroyloxy)stearic acid (12-AS, 9-AS, 6-AS, 3-AS and 2-AS). Chlorhexidine digluconate increased in a dose-dependent manner the rate of rotational mobility of hydrocarbon interior of the OPGTL prepared with total lipids extracted from cultured OPG, but decreased the mobility of membrane interface of the OPGTL. Disordering or ordering effects of chlorhexidine digluconate on membrane lipids may be responsible for some, but not all of its bacteriostatic and bactericidal actions.
Chlorhexidine* ; Fluorescence Polarization ; Liposomes ; Membrane Lipids ; Membranes* ; Phospholipids ; Porphyromonas gingivalis* ; Porphyromonas* ; Thiram ; Unilamellar Liposomes