Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0011860 (type 2 diabetes)
 57,723 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The degree of apo E sialylation in VLDL from serum of diabetics and controls was determined by densitometric scanning of the pherograms after isoelectric focusing of the VLDL proteins including treatment with neuraminidase. The distribution pattern of sialylation within the groups of patients and controls followed a Gaussian type. A significantly elevated level of sialylated apo E could be demonstrated in IDDM and NIDDM as compared to the controls. No correlation was found between the apo E phenotype and the diabetic state. From the correlation analysis including the parameters degree of sialylation, age, duration of diabetic state, and blood glucose pattern no significant results were obtained except a significant but only week correlation (r less than 0.3) between sialylation, age, and blood glucose in IDDM patients. Possible consequences of the elevated apo E sialylation in diabetes mellitus are discussed.
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PMID:[The sialylation rate of apolipoprotein E in insulin-dependent (IDDM) and non-insulin-dependent (NIDDM) diabetes mellitus]. 233 Jul 43

The behavior of the 2 sialidase forms present in the erythrocyte membrane was investigated in 117 subjects with type 2 diabetes mellitus versus 95 healthy controls. A significant increase of the acidic form of sialidase, which is anchored to the membrane by a glycosylphosphatidylinositol bridge, was observed in erythrocyte resealed membranes. On the contrary, the neutral form of the enzyme, the only one capable of removing lipid- and protein-bound sialic acid from endogenous and exogenous sialoderivatives, was significantly reduced with a consequent increase of erythrocyte membrane total sialic acid content. Disease duration, therapy, glycemia, parameters of metabolic control, and presence of complications, except nephropathies, had no influence on the tested enzyme activities. Diabetic subjects showed a different erythrocyte age distribution, with an almost double proportion of young red cells and only one quarter of senescent ones compared with controls. In young erythrocytes, diabetic and control subjects had the same distribution of the 2 enzymes, while in senescent cells the acidic enzyme was increased 3.5-fold and the neutral form was reduced by half in the diabetic subjects. The increase of both acidic sialidase and total membrane-bound sialic acid, together with an overpresence of young red cells in diabetics, suggests that in this pathological condition there might be an altered aging process with a diminished expression of the neutral form of the enzyme and an increase of bound sialic acid. It has been suggested that the expression of the neutral enzyme requires some activation mechanism that is impaired in diabetes.
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PMID:Acidic and neutral sialidase in the erythrocyte membrane of type 2 diabetic patients. 1180 14