Biomedical subjects
Publications and source records attributed to E Boschetti.
The suitability of two new functionalized copolymer gels for use in affinity chromatography has been examined. Both gels were substituted by two ligands, one being specific for lactate dehydrogenase and the other for wheat germ lectin. The derivatives thus obtained were used successfully for the purification of two proteins with different biological activities.
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A study of the physical properties of paraprotein required until now, the use of fairly complicated techniques, such as analytical ultracentrifugation. The use of chromatography on acrylamide agar pearls and electrophoresis on indubiose plates, coupled with the classical techniques of electrophoresis and immunoelectrophoresis, permitted a more simple approach to these problems. The study of IgA paraproteins in several polymerised forms, is an example of the possibilities of this new method of investigation.
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Acid-base parameters were studied in 10 adult patients with chronic respiratory failure during spontaneous acute exacerbations of chronic hypercapnia and after return and stabilization of PaCO2 values at previous levels with improvement of clinical conditions. All factors interfering with acid-base equilibrium were carefully avoided. The results of this investigation confirm qualitatively those obtained by GOLDSTEIN et al. [7] in dog studies and those of INGRAM et al. [9]in human studies: increasing degrees of chronic hypercapnia tend to minimize the pH reduction induced by acute PACO2 changes. From a quantitative standpoint INGRAM's data in humans are considerably different from GOLDSTEIN's data obtained in dogs. Our data, although numerically limited, confirm the acute deltaH+/deltaPaCO2 slope obtained from dogs by GOLDSTEIN et al. As data are not yet sufficient, definitive conclusions cannot be drawn. However the pattern of acid-base equilibrium changes in man in this situation seems to be similar to that observed by GOLDSTEIN et al. in the dog and could be described with reasonable accuracy by the theoretical model of LEUENBERGER et al.[13].
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