Heterogeneity of urinary albumin from diabetic patients. 1990

Y Hayashi, and A Morikawa, and M Makino
Department of Laboratory Medicine, Asahikawa Medical College, Japan.

A fundamental cause of diabetic microalbuminuria, heterogeneity of normal and diabetic urinary albumin was shown by affinity chromatography on Cibacron Blue F3GA. By changing the properties of interaction with the matrix, the protein was separated into six fractions. Samples of urinary albumin from proteinuria patients showed the same elution profiles as those of serum albumin, whereas those from controls or normoalbuminuria diabetic patients exhibited different elution patterns. The relative percentage of the resin unbound fraction of urinary albumin was ten or more times higher than that of serum albumin, and the ratio decreased with increasing albumin excretion into urine. More than 6 mol fatty acid/mol albumin combined with the unbound fraction. It is suggested that microalbumin excretion into urine is the result of excessive unesterified fatty acid binding to the protein.

UI MeSH Term Description Entries
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D002846 Chromatography, Affinity A chromatographic technique that utilizes the ability of biological molecules, often ANTIBODIES, to bind to certain ligands specifically and reversibly. It is used in protein biochemistry. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed) Chromatography, Bioaffinity,Immunochromatography,Affinity Chromatography,Bioaffinity Chromatography
D003920 Diabetes Mellitus A heterogeneous group of disorders characterized by HYPERGLYCEMIA and GLUCOSE INTOLERANCE.
D004396 Coloring Agents Chemicals and substances that impart color including soluble dyes and insoluble pigments. They are used in INKS; PAINTS; and as INDICATORS AND REAGENTS. Coloring Agent,Dye,Dyes,Organic Pigment,Stain,Stains,Tissue Stain,Tissue Stains,Organic Pigments,Pigments, Inorganic,Agent, Coloring,Inorganic Pigments,Pigment, Organic,Pigments, Organic,Stain, Tissue,Stains, Tissue
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults
D000418 Albumins Water-soluble proteins found in egg whites, blood, lymph, and other tissues and fluids. They coagulate upon heating. Albumin
D000419 Albuminuria The presence of albumin in the urine, an indicator of KIDNEY DISEASES. Albuminurias
D012685 Sepharose Agarose,Sepharose 4B,Sepharose C1 4B,4B, Sepharose C1,C1 4B, Sepharose

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