Definition of dextran in English:

dextran

noun

Chemistry
  • 1A carbohydrate gum formed by the fermentation of sugars and consisting of polymers of glucose.

    • ‘In one set of experiments, they loaded the sugar dextran, the anticoagulant heparin, or a growth hormone into reservoirs on separate chips.’
    • ‘Among them, the most effective in preserving a more native-like structure are the disaccharides sucrose and trehalose in dry films and the polymer dextran in wet films.’
    • ‘Fructans appear to be special in their membrane protective action, since other polymers such as dextran and HES failed to protect the membrane barrier function during freeze-drying, whereas chicory inulin was able to retain CF.’
    • ‘The particles are crafted from the polymer dextran, a sugar-binding protein, and insulin.’
    • ‘This assay used DEAE dextran to stabilize polymers, which were then collected by filtration through a nylon membrane.’
    1. 1.1Medicine A solution containing a hydrolyzed form of this, used as a substitute for blood plasma.
      • ‘A new preservation solution, which combines a low potassium concentration and dextran, has also been developed specifically for the lungs.’
      • ‘High molecular weight dextran expands the plasma volume by an amount equal to 80% to 120% of the volume infused and the plasma volume is increased for up to 6 hours after infusion.’
      • ‘The viscosity of the dextran solution chosen for the go-and-stop experiment allowed testing most red cells of the population.’
      • ‘After the subjects were detrained, they were infused with a dextran solution to expand their blood volume until it exceeded their trained level.’
      • ‘Larger scale studies may be needed if important clinical differences between colloids and crystalloids are to be found (including the possibility that dextran may worsen bleeding complications).’

Origin

Late 19th century: from dextro- + -an.

Pronunciation

dextran

/ˈdekˌstran/