The paper describes a learning programme for calculating the characteristics of arterial blood from the ventilation-perfusion ratios in the lungs by using a three-variable mathematical model of the lung. The lungs are presented as a set of three components which differ in ventilation and perfusion: 1) a fraction of ventilated and O2-perfused alveoles; 2) a fraction of non-perfused and ventilated alveoles; 3) a fraction of unventilated and non-perfused alveoles. Results of calculations are provided.
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Fatty acid composition of phospholipids and neutral lipids from human diabetic small arteries and veins by a new TLC method.
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The Diabetic Microangiopathy Unit, LIPHA-INSERM U352, INSA-Lyon, Villeurbanne, France.
It has been suggested that lipid peroxidation of polyunsaturated fatty acids (PUFA) may play a role in the pathogenesis of diabetic complications. To test this hypothesis, we aimed to compare PUFA composition of small arteries and veins (< 500 microm diameter) obtained from diabetic or non-diabetic Guadeloupean patients undergoing arterio-venous shunt surgery before renal dialysis. Small forearm subcutaneous vessels were analysed by a new TLC method which involved inclusion of vascular biopies directly in alveoles made in the TLC gel and lyophilization onto the plate.
View Article and Find Full Text PDFThe paper describes a learning programme for calculating the characteristics of arterial blood from the ventilation-perfusion ratios in the lungs by using a three-variable mathematical model of the lung. The lungs are presented as a set of three components which differ in ventilation and perfusion: 1) a fraction of ventilated and O2-perfused alveoles; 2) a fraction of non-perfused and ventilated alveoles; 3) a fraction of unventilated and non-perfused alveoles. Results of calculations are provided.
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