Hans Emil Keller

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The determination of the vitamins A and E as well as of carotenes and lycopene is important for studies of cardiovascular diseases and cancer. A method for laboratory routine is reported to separate simultaneously retinol, tocopherols, alpha- and beta-carotene, lycopene and beta-cryptoxanthin in human plasma or serum by HPLC on reversed phase starting from(More)
The vitamin status of a representative population sample in a French district in the Paris area was assessed using a biochemical and dietary approach. Complete data were obtained for 1039 subjects 6 to 97 years old. Dietary intakes of most vitamins increased up to adolescence and then remained stable or decreased slightly in adult life. Total vitamin(More)
A biochemical assessment of the vitamin and trace element status of 756 institutionalized elderly men and women, 66-103 years old (average 83.5 +/- 7.6 y), was conducted in 26 nursing homes in different areas of France. Serum concentrations of beta- and alpha-carotene, beta-cryptoxanthin, lycopene, retinol, alpha- and gamma-tocopherol, vitamin C, zinc and(More)
The programming of the Cobas-Bio centrifugal analyzer for kinetic tests of transketolase, glutathione reductase and aspartate amino-transferase is described. The results obtained in a population of 200 healthy people of both sexes are reported.
Continuous electrocardiographic (ECG) monitoring was performed over 24 h in 44 children at various stages of chronic renal failure in order to determine the incidence and nature of cardiac dysrhythmias. In addition the ECG was followed during haemodialysis sessions and during dialysate exchanges in continuous ambulatory peritoneal dialysis (CAPD) patients.(More)
Reliable HPLC methods for the routine determination of vitamin A (only retinol, not the ester) of beta-carotene and of vitamin E in plasma are described. The results found in 150 blood donors are reported; the correlation of the concentrations of vitamin A with retinol-binding protein and of vitamin E with beta-lipoproteins are calculated.
BACKGROUND Disappearance of left ventricular hypertrabeculation/noncompaction (LVHT) has been reported only in myocarditis. We report disappearance of LVHT after implantation of a biventricular pacemaker in a 68-year-old female. She suffered from symmetrical polyneuropathy and heart failure New York Heart Association Class IV due to dilated cardiomyopathy(More)
BACKGROUND Arrhythmias determine life expectancy in patients with hereditary myopathies. AIMS The aim of this study was to summarize recent advances in the diagnosis and management of arrhythmias in hereditary myopathies. METHODS Literature search via PubMed and inclusion of own experiences were performed. RESULTS All types of arrhythmias can be found(More)
Simple and proven techniques for the assay of the coenzyme stimulation of the erythrocyte enzymes transketolase, glutathione reductase and glutamate oxaloacetate aminotransferase are described. The results found in a cohort of 150 blood donors and their comparison with the values for total thiamine in whole blood and pyridoxal phosphate in erythrocytes are(More)
To study the effects of fenofibrate, a lipid-lowering medication, on patients with coronary artery disease, 191 minor coronary narrowings in 42 patients with coronary artery disease were analyzed by quantitative coronary angiography using computer-assisted contour detection. Computed parameters were percent diameter reduction and percent plaque area. A(More)