No abstract available.
Animals ; Mice* ; Oocytes*

No abstract available.
Plasmapheresis* ; Prednisolone* ; Purpura, Thrombotic Thrombocytopenic*

No abstract available.
Exostoses*

To our knowledge, this is the first case of concurrent diaphyseal left coracoid and left femoral fractures in a Eurasian eagle owl and its post-release survival in Korea. The femur was surgically repaired using an external skeletal fixator-intramedullary (IM) pin tie-in method, and the coracoid was repaired solely with an IM pin on day 6 after femur surgery. The eagle owl underwent a gradual rehabilitation process. The bird was successfully rehabilitated and released 101 d after initial presentation. The bird was monitored using a wildlife tracking device and was confirmed to have survived for over 5 mon in the wild.

Mast cells, which are major effector cells in allergic reactions, are found in the perivascular spaces of most tissues and contain pro-inflammatory and vasoactive mediators. These mediators are released after IgE receptor cross-linking induced by allergens or other stimuli, including anaphylatoxins (C3a and C5a), aggregated IgG, certain drugs, venoms, and physical stimuli (pressure and temperature changes), as well as cytokines and neuropeptides. The excess release of these mediators can cause variable allergic symptoms and signs, such as bronchospasm, itching, flushing, nausea, vomiting, diarrhea, abdominal pain, vascular instability, and anaphylaxis. Furthermore, mast cell disorders may involve either excessive proliferation of mast cells or abnormal mast cell reactivity. Mast cell disorders can be broadly divided into 3 types: primary, secondary, and idiopathic. All of these disorders present with signs and symptoms of mast cell activation and differ in severity and involvement of various organ systems. The best characterized primary disorder is mastocytosis. Systemic and cutaneous forms of the disease are well described. Secondary disorders include typical allergic diseases and some types of urticarial diseases. In this article, the biochemical characteristics of mast cells and the role of mast cells in allergic inflammation, as well as the classification, diagnosis, and management of mast cell-related disorders, will be reviewed.
Abdominal Pain ; Allergens ; Allergy and Immunology ; Anaphylatoxins ; Anaphylaxis ; Bronchial Spasm ; Classification ; Cytokines ; Diagnosis ; Diarrhea ; Flushing ; Hypersensitivity ; Immunoglobulin E ; Immunoglobulin G ; Inflammation* ; Mast Cells* ; Mastocytosis ; Nausea ; Neuropeptides ; Pruritus ; Venoms ; Vomiting

No abstract available.
Melanoma*

The present study was performed to investigate the role catecholamine in the genesis of reperfusion injury of ischemic heart. The possible involvement of catecholamine in the xanthine oxidase-linked production of oxygen free radicals was studied. langendorff preparations of rat hearts were made ischemic for 60 min followed by reperfusion. Upon reperfusion norepinephrine(NE) was significantly released into the coronary effluent regardless of oxygenation of the perfusion solution. Both the increased releases of creatine phosphokinase(CPK) and malondialdehyde(MDA) and the production of superoxide anion in the ischemic-reperfused hearts were significantly reduced by the treatment with either reserpine, a catecholamine depletor, or propranolol, a beta-adrenergic receptor blocker. In the reserpinized hearts, infusion of exogenous NE reversed the releases of CPK and MDA and the superoxide anion production to the original higher levels. The releases of CPK and MDA as well as the production of superoxide anion induced by NE in the reserpinized hearts were significantly depressed either by allopurinol, a specific competitive inhibior of xanthine oxidase(XOD), or by the calcium removal from the perfusion solution. Compared with the XOD activity of control ischemic hearts, that of the hearts treated with reserpine or propranolol showed lower activity in the oxygen radical producing 0-form and higher activity in D/0-form. In the reserpinized ischemic hearts, infusion of exogenous NE increased 0-form, but decreased D/0-form of XOD. The changes in XOD activities induced by exogenous NE was prevented by phenylmethylsulfonyl fluoride(a serine protease inhibitor) and pimoxide(a calmodulin inhibitor) as well as by calcium removal from the perfusion solution. It is suggested from the results that in the inchemic-reperfused heart of rat catecholamine participates in D/0 to 0-form conversion of XOD by promoting the calcium-calmodulin-dependent proteolysis and plays a contributing role in the production of oxygen free radical.
Allopurinol ; Animals ; Calcium ; Calmodulin ; Creatine ; Free Radicals ; Heart* ; Oxygen ; Perfusion ; Propranolol ; Proteolysis ; Rats* ; Reperfusion Injury* ; Reperfusion* ; Reserpine ; Serine Proteases ; Superoxides ; Xanthine Oxidase* ; Xanthine*

Angiosarcomas are rare tumors, seen most commonly in the skin and soft tissue of head and neck region. But it has been described in numerous body sites including thyroid, breast, liver, spleen, bone, etc.. Their biological behaviors depend on the microscopic grade, site of origin, and multifocality. We report the unique cytological features of an angiosarcoma in pleural fluid. A 61-year-old woman presented with a 6 month history of dyspnea on exertion and chest pain. Chest computerized tomography(CT) revealed multiple subpleural small nodules in the right lung and widespread air space consolidation and pleural effusion in the left lung. CT of liver revealed multiple small low attenuated lesion. The smears obtained from pleural fluid showed hypocellularity with a hemorrhagic background. The tumor cells were highly pleomorphic oval or spindle in shape and presented singly, in loose groups, in knitted syncytial aggregates, and in acinar pattern. Their nuclei had vesicular chromatin with delineated, thick nuclear membranes and occasionally a large eosinophilic, prominent nucleolus. The cytoplasm was plump, thin or projected in spindly fashion. Almost all tumor cells showed variable sized intracytoplasmic vacuoles and their nuclei were sometimes crescentic by a huge vacuole. Occasional binucleated tumor cells and mitotic figures were present. Cellular debris and streaky materials were identified. Needle biopsy specimen from the pleura revealed anastomosing slit-like spaces lined by pleomorphic tumor cells. The tumor cells showed a strong reactivity for CD31 and vimentin and focal weak reactivity for factor VIII-related antigen.
Female ; Humans ; Follow-Up Studies ; Biopsy

No abstract available.
Orthopedics*

Osteoid osteoma is a small, oval or roundish, nidus like neoplasm of bone. The lesion usually does not exceed a centimenter in its greatest dimension, and it consists of osteoid, trabeculae of newly formed osseous tissues and a substratum of highly vascularized osteogenic connective tissue. In a differential diagnosis, consideration should be given to Brodies abscess, sclerosing osteomyelitis of Garre, Fibrous dysplasia and healing fractures. From Janua 1960 to December 1980, we have seen and studied 18 cases of osteoid osteoma and the results obtained from this study were follows: l. Eleven cases were found in second decade and 17 cases were developed before thirty years old. 2. The sex ratio was nearly equal and duration of disease from onset was average 16 months. 3. Location of lesions were predominantly in lower extremities, 9 in tibia and 3 in femur. 4. Pain was noted in 16 cases and aspirin affected in 8 cases. 5. Nidus was found in 11 cases. 6. All cases were treated by radical excision of lesions with disappearance of pain and satisfactory results.
Abscess ; Aspirin ; Clinical Study ; Connective Tissue ; Diagnosis, Differential ; Femur ; Lower Extremity ; Osteoma, Osteoid ; Osteomyelitis ; Sex Ratio ; Tibia