Analysis of glycosaminoglycans in urine by using acridine orange fluorescence

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Abstract
A fluorescence technique is described which utilizes the electrostatic interaction between the polyanionic sites of glycosaminoglycans and the cationic dye Acridine Orange to analyze urinary glycosaminoglycans from patients suffering from mucopolysaccharidoses. The basis of the titration is the decrease in the fluorescence of free Acridine Orange that occurs when it is bound to polyanions. The effect of the presence of possible interfering materials such as salt, proteins and trace materials in urine was evaluated. This fluorescence technique is technically simple.