A Simplified Colorimetric Assay of Nonenzymatic Glycosylation of Human low Density Lipoproteins in Normal and Diabetes Mellitus
Yonsei Medical Journal
;
: 7-16, 1986.
Article
in English
| WPRIM
| ID: wpr-10614
ABSTRACT
A simplified colorimetric method for measurement of the levels of glycosylation of proteins was developed by a modification of an existing method. Employing this method, the extent of nonenzymatic glycosylation of apolipoprotein B subspecies(B-100, B-74, B-26), LDL, VLDL and total serum proteins in human plasma obtained from patients with diabetes mellitus and control subjects was compared. Plasma LDL (1.019 < d < 1.063) and VLDL(d < 1.006) were separated using the sequential ultracentrifugation method, and the subspecies of apolipoprotein B were isolated by extracting them from polyacrylamide gels after they were separated by preparative SDS-polyacrylamide gel electrophoresis. Increases in the level of glycosylation of serum proteins, LDL, VLDL, and apo B subspecies obtained from diabetic patients were observed. Among them, the increases of glycosylated LDL and apo B-26 were most significant (p < .001). Also, good correlations were found between glycosylations of apo B-26 and LDL (r=.88), and glycosylation of LDL and LDL cholesterol level(r=.79). The results also showed an excellent correlation between levels of HbA1c and glycosylated apo B-26(r=.93).
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Glycosylation
/
Colorimetry
/
Diabetes Mellitus, Type 2
/
Lipoproteins, LDL
Limits:
Adult
/
Humans
Language:
English
Journal:
Yonsei Medical Journal
Year:
1986
Type:
Article
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