Biomedical subjects
Publications and source records attributed to F Acin.
We operated upon an 18-year-old female presenting a spontaneous aneurysm of the axillary vein. Pathologic examination of the aneurysm showed an anomalous muscular layer. To our knowledge, this is the first case of nontraumatic axillary venous aneurysm.
Platelets play an important role in the development of atherosclerosis. The arachidonic acid, whose oxygenated metabolites are potent regulators of the platelet-vessel wall interactions, is released from membrane phospholipids by the phospholipase (s) system (s). These membrane-linked phenomena are strongly modulated by the membrane physical properties. The present study was carried out to investigate the relationship between membrane fluidity and arachidonic acid metabolism in platelets from atherosclerotic patients. Twenty-one patients with peripheral vascular disease and twelve controls were studied. Platelets from patients showed an increase in membrane fluidity and enhanced thrombin-stimulated thromboxane synthesis. No alterations were found, however, in total phospholipid fatty acid composition. A significant decrease in the cholesterol/phospholipid ratio could account for the alterations in the membrane physical properties described in the platelets from patients.
The possibilities of computed axial tomography in displaying normal anatomy are shown. The fact scanners are able to show important anatomical details including vascular anatomy. The upper abdomen is shown in consecutive slices to demonstrate the most important anatomical landmarks. The possibility of reconstructed coronal and sagittal planes from the axial slices offers good correlation with classical topographical anatomy. Axial anatomy from cadaver and computed tomography should be included in our teaching to medical students as part of the background needed for their future clinical practice.
A new technique using xerotomography for axial images obtained from slices of abdominal cadavers is described. Radiographs were also made in sagittal planes for a complete study of visceral relationships. Xerotomography allows a wider range of visualization in the same plane of anatomical structures, from retroperitoneal fascial planes and vessels to abdominal viscera.
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