Macroaggregates
Mostrando 13-22 de 22 artigos, teses e dissertações.
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13. Lipoprotein macroaggregates in bronchoalveolar lavage fluid from patients with diffuse interstitial lung disease: comparison with idiopathic alveolar lipoproteinosis.
Lipoprotein macroaggregates were present in cytocentrifuge preparations of bronchoalveolar lavage fluid from four patients with diffuse lung diseases other than idiopathic alveolar lipoproteinosis. In three patients the primary diagnosis was cryptogenic fibrosing alveolitis and in one sarcoidosis. We confirmed the presence of large multilamellar aggregates o
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14. Regional pulmonary function in patients with mitral stenosis in relation to haemodynamic data
Central haemodynamics in 23 patients with mitral stenosis and 7 control subjects were compared with the results of regional lung perfusion studied by 133Xe, pulmonary scintigraphy with 99mTc-labelled macro-aggregates of albumin, and regional ventilation by 133Xe.
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15. Combined use of 99mtechnetium-labelled macroaggregates of albumin and 75selenium-selenomethionine in the diagnosis of lung cancer
Critchley, M., Testa, H. J., and Stretton, T. B. (1974).Thorax, 29, 421-424. Combined use of 99mtechnetium-labelled macroaggregates of albumin and 75selenium-selenomethionine in the diagnosis of lung cancer. A two-stage isotope technique has been used in 30 patients with radiographic evidence of circumscribed pulmonary lesions in an attempt to establish the
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16. Effect of intracoronary glyceryl trinitrate on perfusion distribution in the collateralised human myocardium.
The effect on myocardial perfusion distribution of intracoronary glyceryl trinitrate in a dose (60 micrograms) insufficient to cause alterations in systemic blood pressure or heart rate was studied in eight patients with angiographically demonstrated collaterals from the left coronary system to the distal right coronary artery. Double isotope imaging using t
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17. Self-assembly of large, ordered lamellae from non-bilayer lipids and integral membrane proteins in vitro
In many biological membranes, the major lipids are “non-bilayer lipids,” which in purified form cannot be arranged in a lamellar structure. The structural and functional roles of these lipids are poorly understood. This work demonstrates that the in vitro association of the two main components of a membrane, the non-bilayer lipid monogalactosyldiacylglyc
The National Academy of Sciences.
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18. Effects of acute and long-term bronchodilator treatment on regional lung function in asthma assessed with krypton-81m and technetium-99m-labelled macroaggregates.
We have investigated the effect of acute and long-term bronchodilator treatment on the distribution of ventilation and perfusion in 15 asthmatics using a gamma camera, krypton-81m (for ventilation) and technetium-99m macroaggregate (for perfusion). Individual peak expiratory flow (PEF) values before bronchodilation were slightly or moderately below the predi
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19. Pulmonary sequelae in survivors of congenital diaphragmatic hernia.
Nineteen survivors of congenital diaphragmatic hernia repair were compared with age and sex matched control children six to 11 years after repair. All subjects were examined clinically and underwent lung function testing. The patients also had individual lung volumes assessed radiographically and had radionuclide (krypton-81 m, technetium-99 m macroaggregate
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20. Effects of pulmonary edema on regional blood volume and red blood cell transit time. Comparison of high pressure and oleic acid-induced edema.
The present study was designed to determine the effects of pulmonary vascular pressure, vascular injury, and pulmonary edema on regional blood volume (Vr) and regional red blood cell (RBC) transit time (Tr) in the lung. The experiments were carried out in 15 dogs. Six served as controls, six had oleic acid-induced pulmonary edema (OAPE), and three had high p
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21. Role of thrombospondin in platelet aggregation.
Thrombospondin (TSP), the major alpha-granule protein of human platelets, binds to the activated platelet surface upon platelet stimulation. TSP has hemagglutinating (lectin-like) activity and forms a specific complex with fibrinogen. Based on these observations, it was postulated that the interaction of TSP and fibrinogen on the activated platelet surface m
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22. Oxygen and 99mTc-MAA shunt estimations in patients with pulmonary arteriovenous malformations: effects of changes in posture and lung volume.
BACKGROUND--Patients with arteriovenous malformations are routinely monitored with arterial oxygen saturation (SaO2) estimations (breathing air) from which an oxygen shunt fraction can be calculated. This simple estimation has been compared with an anatomically defined estimate of the right to left shunt using a radioisotopic method. The fall in SaO2 which o