No abstract available.
Hemodynamics* ; Hepatocytes* ; Ischemia* ; Liver* ; Urokinase-Type Plasminogen Activator* ; Verapamil*

Intravascular injection of hydrogen peroxide produces oxygen microbubbles suitable for echocardiographic contrast enhancement. To evaluate the effect of a method of myocardial contrast 2-D-echocardiographic delineation of myocardium during acute coronary occlusion, injection of a fresh mixture of 2ml of 0.2% H2O2 and 1ml of heparinized dog blood into aortic root were made in 12 poenchest dogs 10 minutes after occlusion of left anterior descending coronary artery distal to the first diagonal branch and left ventricular short axis 2-D echocardiographic images at the midpapillary muscle level were obtained. On injection of H2O2 blood mixture normally perfused myocardium was enhanced in echodensity but the area of malperfusion did not change in echodensity. The borderlines between the area of normal perfusion and malperfusion was well delineated. The malperfused area measured at mid papillary muscle level by planimetry area method was 29.7+/-6.0% and 32.6+/-6.7% by endocardial circumferential length method. There was a linear correlation between planimetric estimate of area of malperfusion by H2O2 contrast echocardiography and visual determination of regional wall motion abnormality by 2-D echocardiography(r=0.93, P<0.001). There was no change in heart rate before, during and after H2O2 injection. Infection of H2O2 blood mixture caused bradycardia(8.3%), second degree A-V block(16.6%) and ventricular fibrillation(8.3%). H2O2 clearance was achieved in 3-10 minutes. These findigs suggest that H2O2 enhanced myocardial contrast ehocargiography using 2ml of 0.2% H2O2 and 1ml of blood muxture is an accurate, reproducible, real-time in vivo method of quantifying the extent of myocardial perfusion defect during acute coronary occlusion in dog.
Animals ; Axis, Cervical Vertebra ; Coronary Occlusion ; Coronary Vessels ; Dogs* ; Echocardiography* ; Heart Rate ; Heparin ; Hydrogen Peroxide* ; Hydrogen* ; Microbubbles ; Myocardium ; Oxygen ; Papillary Muscles ; Perfusion*

PURPOSE: We evaluated the correlation between the carcinogenesis of gallbladder and the expression of lysozyme, p53, c-erbB2 and CEA in gallbladder lesions. MATERIALS AND METHODS: Thirty cases of gallbladder lesions (containing 17 cases of GB carcinoma) were examined. We analyzed the clinicopathologic findings of the early (stage I & II) and advanced carcinoma (stage III, IV & V) and those of carcinoma with or without metaplasia in the tumor. We performed p53, c-erbB2 and CEA immunohistochemical staining and compared their findings with those of normal mucosa and preneoplastic lesions. We also performed lysozyme immunohistochemical staining and compared its finding with metaplastic and non-metaplastic lesions. RESULTS: There are two distinct genetic pathways in gallbladder cacinogenesis and metaplastic carcinoma was more frequent than non-metaplastic carcinoma. Metaplasia of gallbladder did not reveal any difference of the clinicopathologic findings and depth of invasion (Nevin stage). Lysozyme expression was found in all metaplastic lesions but non-expression did not indicate non-metaplastic lesions. p53 mutations and c-erbB2 alterations may have a role in the carcinogenesis of gallbladder carcinomas, especially, in a late event, and in an early and late events, respectively. The correlation of p53 and c-erbB2 expressions was found but which did not indicate that the co-expression was needed in the carcinogenesis. CEA immunohistochemical staining may be helpful in the differential diagnosis of benign lesions and precancerous and cancerous lesions of the gallbladder. CONCLUSION: These results suggest that p53 mutations and c-erbB2 alterations may have a role in the carcinogenesis of gallbladder carcinomas, especially, in a late event, and in an early and late events, respectively.
Carcinogenesis ; Diagnosis, Differential ; Gallbladder* ; Metaplasia* ; Mucous Membrane ; Muramidase

No abstract available.
Fibrin*

No abstract available.
Arthrogryposis*

Parathyroid hormone (PTH) has not been studied as extensively as therapeutic agents of osteoporosis, but the anabolic effect of parathyroid hormone on the skeleton has been demonstrated in several studies. The current study was undertaken to assess the effect of parathyroid hormone on bone mass and its biomechanical competence using ovariectomized rat model. Fifty female Sprague Dawley rats of 3 months old were randomized into five groups, 10 in number for each groups. Group I: sham-operation, Group II: ovariectomy (OVX) plus saline injection, Group III: OVX plus PTH 20ug/kg, Group IV: OVX plus PTH 40ug/kg, Group V: OVX plus PTH 80ug/kg. Treatment regimens were initiated 8 weeks after ovariectomy and continued for 4 weeks thereafter. Bone mineral density was measured in proximal one-third level of tibia by dual energy X-ray absorptiometry (QDR-2000, Hologic, U.S.A). Biomechanical competence was assessed in lumbar vertebral body by universal testing machine (Instron-4467, U.S.A). The average of bone mineral density in sham operated group was 0.088+/-0.0084g/cm (2), and in control group (OVX +/- saline)was 0.065+/-0.0095g/cm (2). Bone mineral density decreased in control group significantly. The average of bone mineral densities in Group III, IV, V (OVX + PTH) were 0.071+/- 0.0089, 0.081+/-0.0086 and 0.084+/-0.0093g/cm (2), respectively. This showed that parathyroid hormone injected groups had significantly higher bone mass than control group (p<0.0#5), and the increment was in proportion to the amount of parathyroid hormone in the range (p<0.05). The average of biomechanical competence of lumbar vertebral body in sham operated group was 30.036.24 MPa and was 25.11+/-5.69 MPa in control group. In Group III, IV,V they were 25.74+/-6.77, 27.96+/-5.17 and 29.83+/-5.79 MPa, respectively. Above results seem supportive of the phenomenon that parathyroid hormone exert anabolic effect on osteoporotic bones in certain experimental condition.
Absorptiometry, Photon ; Anabolic Agents ; Animals ; Bone Density* ; Female ; Humans ; Infant ; Mental Competency ; Models, Animal ; Osteoporosis ; Ovariectomy ; Parathyroid Hormone* ; Rats* ; Rats, Sprague-Dawley ; Skeleton ; Spine* ; Tibia*

Adequate radiographic demonstration of renal injury following blunt abdominal trauma is an important guide totherapy. The diagnostic evaluation of renal injuries usually begins with excretory urography, but not providedetailed information about the extent of injury. The need for a more accurate noninvasive modality led us toinvestigate the use of CT. We evaluated with CT and excretory urography 30 selected patients suspected of havingmajor renal injury. Of these patients 11 were also underwent arteriography for assessment of renal arterialinjuries. In this paper, we wish to analyze the result of the above modalites, particulary angiography and CT. Thebrief results were as follow. 1. Among 30 patients, 21 cases were male and 9 cases were female. About one third ofthese occured between the age of 20-29. 2. All cases were nonpenetrating blunt traumas. 3. Renal injuries werecategorized into 3 groups. Category I is minor renal injuries(14 cases), II is major renal injuries(1 cases), andIII is catastrophic renal injuries(3 cases). 4. IVP is the most common inital diagnostic modality and good forscreening of patients, but lack of specificity. In our study the specificity is about 33%. 5. CT is more accuratein detecting hematoma, parenchymal laceration, fracture and extravasation of urine, but agiography is moreconfirmative in diagnosis of vascular injuries. 6. Conservative management was done in 19 cases; 13 cases ofcategory I and 6 cases of II. Operation was performed in 11 cases: 1 case of category, I, 7 cases of II and 3cases of III. 7. Associated injuries were noted in 17 cases(57%).
Angiography ; Diagnosis ; Female ; Hematoma ; Humans ; Lacerations ; Male ; Sensitivity and Specificity ; Urography ; Vascular System Injuries

No abstract available.
Dislocations* ; Head* ; Hip* ; Necrosis*

Adult T-cell leukemia/lymphoma (ATLL) is an often aggressive and fatal malignancy of mature CD4+ T lymphocytes, characterized by leukemia, lymphadenopathy, hypercalcemia and lytic bone lesions. Diagnosis of ATLL is based cm abnormal T lymphocytes in the peripheral blood and histologically and cytologically proven lymphoid malignancy with T cell surface antigens. Anti-HTLV-I serum antibodies and demonstration of clonality to HTLV-I proviral DNA are included. We report a case of ATLL in a 64-year-old man who had a painful nodule on the right cheek and multiple scattered papules and nodules on the trunk for 2 months. He had multiple cervical and axillary lymph node enlargements and hepatosplenomegaly. On laboratory finding peripheral leukocytes count was 33,400/mm3 with 63% atypical lymphocytes. Clover-shaped lyrnphocytes with multilobulated nuclei were found in peripheral blood and bone marrow. Histologic findings showed dense bandlike infiltrations of atypical lymphocytes in the dermis with angiocentricity. The surface phenotype of these abnormal cells were CD2+, CD3+, CD4+, CD30+ and HLA-DR+ and HTLV-I specific antibodies were found.
Adult* ; Antibodies ; Antigens, Surface ; Bone Marrow ; Cheek ; Dermis ; Diagnosis ; DNA ; Human T-lymphotropic virus 1 ; Humans ; Hypercalcemia ; Leukemia ; Leukemia-Lymphoma, Adult T-Cell* ; Leukocytes ; Lymph Nodes ; Lymphatic Diseases ; Lymphocytes ; Lymphoma* ; Middle Aged ; Phenotype ; T-Lymphocytes

No abstract available.