Navigation Links
Albumin


You may be looking for albumen, or egg white.

Albumin is a blood plasma protein that is produced in the liver and forms a large proportion of all plasma protein. It is also found in egg white.

The normal range of albumin concentrations in human blood is 3.5 to 5.0 g/dL, and albumin normally constitutes about 60% of plasma protein; all other proteins present in blood plasma are referred to collectively as globulin. Albumin is essential for maintaining the oncotic pressure needed for proper distribution of body fluids between intravascular compartments and body tissues. Albumin is negatively charged. The glomerular basement membrane is also negatively charged, this prevents the filtration of albumin in the urine. In nephrotic syndrome, this property is lost, and there is more albumin loss in the urine.

Because smaller animals (for example rats) function at a lower blood pressure, they need less oncotic pressure to balance this, and thus need less albumin to maintain proper fluid distribution.

Functions of albumin:

  • Maintains oncotic pressure
  • Transports thyroid hormones
  • Transports other hormones, particularly fat soluble ones
  • Transports fatty acids ("free" fatty acids)
  • Transports unconjugated bilirubin
  • Transports many drugs
  • Competitively binds calcium ions (Ca2+)
  • Buffers pH

Causes of albumin deficiency:

  • Cirrhosis of the liver (most commonly)
  • Decreased production (as in starvation)
  • Excess excretion by the kidneys (as in nephrotic syndrome)
  • Excess loss in bowel (protein losing enteropathy)
  • Mutation causing albuminemia (very rare)

Links


'"/>


(Date:10/1/2014)... the deserts, rainforests, prairies and forests of the world ... Central Park, according to a surprising new study led ... Boulder. , The research team analyzed 596 soil ... discovered a stunning diversity of below-ground life, most of ... 8.5 percent to 16.2 percent of the organisms discovered ...
(Date:9/30/2014)... as something that we enjoy when we visit a national ... think of ourselves as a part of nature? A bird,s ... house? , The answers to these questions reflect different ... speech and in cultural artifacts. , A new Northwestern University ... Indian Center of Chicago and the Menominee tribe of Wisconsin, ...
(Date:9/30/2014)... LIVERMORE, Calif. The National Institutes of Health ... grant today to develop an electrode array system ... the brain works through unprecedented resolution and scale. ... efforts to support President Obama,s BRAIN (Brain ... new research effort to revolutionize our understanding of ...
Breaking Biology News(10 mins):Microbes in Central Park soil: If they can make it there, they can make it anywhere 2Microbes in Central Park soil: If they can make it there, they can make it anywhere 3The cultural side of science communication 2NIH taps lab to develop sophisticated electrode array system to monitor brain act 2NIH taps lab to develop sophisticated electrode array system to monitor brain act 3
... cellulose that can be turned into ethanol and other ... Austin who say the microbe could provide a significant ... be scaled up. Along with cellulose, the cyanobacteria ... David Nobles Jr. secrete glucose and sucrose. These simple ...
... Boston, MA-- In a new, large-scale study exploring the ... the Harvard School of Public Health (HSPH) have found ... domestic violence in the previous year are more likely ... online March 26, 2008 in The American Journal of ...
... Communications, branding workshop helps business, owners clearly communicate ... ... April 22 A powerful brand yields,confidence, credibility and ... of your business, including the,overall experience your employees and ...
Cached Biology News:New source for biofuels discovered 2New source for biofuels discovered 3Domestic violence associated with chronic malnutrition in women and children in India 2In Today's Economy, You Can Strengthen Your Company by Building Your Brand 2
Other biology definitionOther Tags