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Biomedical subjects

F Musil

Publications and source records attributed to F Musil.

At least 19 recordsLinked to original sources

[Diagnosis of beta-thalassemia on the basis of HbA2 determination].

The increased level of HbA2 is a reliable marker of heterozygous beta-thalassaemia. The levels of HbA2 measured by three different methods were compared and the ranges for the normal and for the heterozygous beta-thalassaemia were assessed. The levels of HbA2 2.76 +/- 0.47% for normal (30 blood donors) and 4.62 +/- 0.77% for beta-thalassaemia (50 patients) were obtained by the chromatographic method 2.61 +/- 0.42% HbA2 for normal (30 blood donors) and 5.82 +/- 0.89% HbA2 for beta-thalassaemia (46 patients) were assessed by electrophoresis on hydragel (Sebia) and 2.8 +/- 0.62% HbA2 for normal (30 blood donors) and 6.04 +/- 0.96% HbA2 (47 patients) were found when using cellulose acetate electrophoresis. An increased level of foetal Hb was found in nine patients with beta-thalassaemia. The diagnosis of beta-thalassaemia was confirmed by molecular genetic methods in all cases with an elevated HbA2 level, while a normal HbA2 level did not rule out heterozygous beta-thalassaemia.

Chromatography↗

Prophylactic treatment of posttraumatic epilepsy: results of a long-term follow-up in Czechoslovakia.

The results of a long-term study of prophylactic treatment of posttraumatic epilepsy performed in Czechoslovakia during the years 1963 through 1980 are reported. The prophylactically treated group of 144 patients with severe brain injuries was compared with a control group of 24 equally damaged cases without prophylactic treatment. The preventive treatment lasting 2 years in the great majority of cases was performed with relatively low doses of phenytoin (160--240 mg/day) and phenobarbital (30--60 mg/day) administered orally. The incidence of late posttraumatic epilepsy was 25% in the control and 2.1% in the prophylactically treated group. Only one patient (0.7%), however, developed seizures during the course of the prophylactic treatment. The efficiency of prophylactic pharmacotherapy has been proved in long-term observations lasting 8 to 13 years.

Adult↗

Automatic lipid extraction and thin-layer chromatography application with a prgrammed flow system.

An eight-channel programmed flow system for automatic lipid extraction and TLC application is described. Each channel has a container for lipid extraction connected by Acidflex tubing through an AutoAnalyzer pump to a TLC applicator needle. Extraction containers are prepared from disposable Oxford sampler pipet tips by inserting a small cotton filter into their lower, narrower end, which is connected to the pump tubing. The applicator needles are supported vertically in a manifold, and their tips rest on a TLC plate placed on a hot plate. Serum is added to isopropanol in each extraction container, and proteins are completely precipitated in 2 min and retained in the extraction chambers by the cotton filters; lipid extracts are then transferred on to the heated TLC plate by intermittent pumping at a rate allowing for continuous evaporation of isopropanol under streams of warmed air or nitrogen. The lipids accumulate on the plate in eight small spots, one for each channel. Solvent is proportionally added into the extraction chambers from a common reservoir through Acidflex tubing in a second AutoAnalyzer pump. During the extraction procedure, both pump motors are automatically operated by a programmed timer with a solid-state switch. Of several different solvents tested, isopropanol is the fastest for protein precipitation and lipid extraction and does not extract substances from the Acidflex tubing which interfere with chromatographic separation.

1-Propanol↗