Plasma adiponectin and serum advanced glycated end-products increase and plasma lipid concentrations decrease with...

Area of Science:

• Endocrinology and Metabolism
• Diabetology
• Cardiovascular Risk Factors

Background:

• Adiponectin plays a crucial role in glucose and lipid metabolism.
• Advanced glycation end-products (AGEs) are implicated in diabetic complications.
• Understanding their longitudinal changes in type 2 diabetes is vital.

Purpose of the Study:

• To prospectively evaluate changes in plasma adiponectin (p-adiponectin) and serum advanced glycation end-products (s-AGE) over 3 years.
• To assess the relationship of these markers with plasma lipids and diabetic retinopathy in type 2 diabetes patients.

Main Methods:

• Prospective study of 61 type 2 diabetic patients.
• Measurements of p-adiponectin, s-AGE, plasma lipids, HbA1c, and fasting C-peptide at baseline and after 3 years.
• Diabetic retinopathy assessment at follow-up.

Main Results:

• Both p-adiponectin and s-AGE concentrations significantly increased over 3 years.
• Improvements observed in HbA1c, fasting C-peptide, and lipid profiles.
• Increased p-adiponectin correlated with improved HDL cholesterol and lower LDL/HDL ratio, suggesting dependence on metabolic improvements; s-AGE increase was independent.

Conclusions:

• The rise in p-adiponectin was linked to improvements in insulin sensitivity and dyslipidemia.
• The increase in s-AGE was independent of metabolic changes and may be associated with the duration of type 2 diabetes.
• s-AGE showed a slight correlation with the degree of retinopathy at follow-up.