albumin

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albumin

(ălbyo͞o`mən) [Lat.,=white of egg], member of a class of water-soluble, heat-coagulating proteinsprotein,
any of the group of highly complex organic compounds found in all living cells and comprising the most abundant class of all biological molecules. Protein comprises approximately 50% of cellular dry weight.
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. Albumins are widely distributed in plant and animal tissues, e.g., ovalbumin of egg, myogen of muscle, serum albumin of blood, lactalbumin of milk, legumelin of peas, and leucosin of wheat. Separation of serum albumins from other blood proteins can be carried out by electrophoresis or by fractional precipitation with various salts. Albumins normally constitute about 55% of the plasma proteins. They adhere chemically to various substances in the blood, e.g., amino acids, and thus play a role in their transport. Albumins and other proteins of the blood aid significantly in regulating the distribution of water and maintenance of proper osmotic pressure in the body. Albumins are also used in textile printing, in the fixation of dyes, in sugar refining, and in other important processes.

Albumin

A type of globular protein that is characterized by its solubility in water and in 50% saturated aqueous ammonium sulfate. Albumins are present in mammalian tissues, bacteria, molds, and plants, and in some foods. Serum albumin, which contains 584 amino acid residues, is the most abundant protein in human serum, and it performs two very important physiological functions. It is responsible for about 80% of the total osmotic regulation in blood, and it transports fatty acids from adipose tissue to muscle. When excessive amounts of albumin are found in the urine upon clinical examination, some form of kidney disease is usually indicated. Another important albumin, ovalbumin, is found in egg white. This protein is about two-thirds the size of serum albumin, and it contains sugar residues in addition to amino acid residues (that is, it is a glycoprotein). See Protein

albumin

[‚al′byü·mən]
(biochemistry)
Any of a group of plant and animal proteins which are soluble in water, dilute salt solutions, and 50% saturated ammonium sulfate.

albumin

, albumen
any of a group of simple water-soluble proteins that are coagulated by heat and are found in blood plasma, egg white, etc.
References in periodicals archive ?
Urinary albumin / creatinine ratio (u ACR) was calculated to overcome the day to day variation in urine volume and variation due to improper collection.
Duration of diabetes was also positively correlated with albumin creatinine ratio.
High urinary albumin creatinine ratio is known to indicate poor renal outcome.
Second, the model was further adjusted for CKD diagnosis (glomerular or nonglomerular) and urine protein to creatinine ratio (continuous).
7mmol/l), spot urinary albumin creatinine ratio were measured with Merck Microlab 300 Automated Clinical Chemistry Analyser.
The guideline states the preferred method of detecting albuminuria or proteinuria for people with or without diabetes is urinary albumin: creatinine ratio (ACR) as it accurately predicts renal and cardiovascular risk.
We measured the allantoin to creatinine ratio (A:C) of urine excreted in snow by free-ranging individuals of this population.
Bone mineral density of women was evaluated by Dual Energy X-ray Absorptiometrey (DEXA) and its association was analyzed with urinary calcium creatinine ratio and urinary phosphate creatinine ratio.
It was shown that proteinuria/ creatinine ratio 1 hour post-training and 6 hours post-training increases, but they were not found to be significant (P<0.
Urine tests, such as urine albumin to creatinine ratio or protein to creatinine, are useful to test for high amounts of albumin or protein.
Laboratory investigations included; cord blood gases at birth, complete Blood count, blood glucose and serum electrolytes and urine sample for testing urinary lactate / creatinine ratio.
It has been demonstrated that the protein to creatinine ratio on random urine samples can function as a screen for proteinuria in certain clinical contexts, and several studies suggest random urine samples could potentially replace the cumbersome 24-hour collections.