Dictionary > Glycosuria

Glycosuria

Definition
noun, plural: glycosuria
The presence of atypically high sugar level in urine
Supplement
Glycosuria is a condition wherein glucose is excreted into the urine. Under normal condition, glucose should not be present in the urine. The kidneys should be able to filter glucose back into the bloodstream. However, due to the presence of elevated sugar level in the bloodstream the kidneys fail to reabsorb all glucose and therefore glucose is excreted into the urine. This condition commonly occurs in individuals with untreated diabetes. The inability to synthesize insulin to remove excess sugar (glucose) in the bloodstream and convert it into its storable form, glycogen, results in increased sugar circulating in the bloodstream.
Glycosuria also results from problems in the kidney itself, such as when the kidney fails to reabsorb glucose. The latter is referred to as renal glycosuria. Glucose is supposed to be reabsorbed from the filtrate through the proximal tubule of the kidney across the tubular epithelium and back into the bloodstream. The proximal tubule, though, can reabsorb a limited amount of glucose. If the sugar level exceeds the renal threshold of glucose, about 160 – 180 mg/dL, the proximal tubule becomes overwhelmed by the high amount of glucose and begins excreting glucose into the urine.1
Glycosuria may also lead to dehydration. The presence of sugar in the urine results in the excessive water loss in a process called osmotic diuresis.
Synonym(s):

  • glucosuria

See also:

  • diabetes
  • sugar
  • Related term(s):

    Reference(s):

    1 AIDA on-line’ Explanations. Retrieved from http://www.mendosa.com/www-2aida-org/explain.htm#10.


    You will also like...

    Lights' Effect on Growth
    Lights’ Effect on Growth

    This tutorial elaborates on the effect of light on plant growth. It describes how different plants require different amo..

    Genetic engineering
    Genetic Engineering Advantages & Disadvantages

    This tutorial presents the benefits and the possible adverse eventualities of genetic engineering. Know more about this ..

    DNA molecule
    Genetic Control – On and Off Genes

    Genes are the blueprint of our bodies, a blueprint that creates a variety of proteins essential to any organism's surviv..

    Physical growth
    Physical Development in Humans

    This tutorial elaborates on the physical development of humans, particularly from puberty to adulthood. Read this tutori..

    Angle Oak Tree
    Seed Plants

    Seed plants are vascular plants. They differ from the other vascular plants in producing seeds that germinate into a new..

    Carbohydrates, fats and proteins - dietary sources
    A Balanced Diet – Carbohydrates and Fat

    Apart from vitamins, the human body also requires high energy sources such as carbohydrates and fats. If you want an ove..