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Processes Underlying Glycemic Deterioration in Type 2 Diabetes: An IMI DIRECT Study.
Roberto Bizzotto1, Christopher Jennison2, Angus G Jones3,4
1CNR Institute of Neuroscience, Padova, Italy roberto.bizzotto@cnr.it.
Diabetes Care
|December 16, 2020
Summary
Glycemic deterioration in type 2 diabetes (T2D) is driven by declining insulin sensitivity, impaired beta-cell function, and increased insulin clearance. Stabilizing these factors can help prevent disease progression.
Area of Science:
- Metabolic disease research
- Endocrinology
- Diabetes management
Background:
- Type 2 diabetes (T2D) is characterized by progressive hyperglycemia.
- Understanding the underlying mechanisms of glycemic deterioration is crucial for effective T2D management.
Purpose of the Study:
- To investigate the key metabolic processes contributing to worsening glycemic control in recently diagnosed T2D patients.
- To identify predictive factors for rapid glycemic deterioration.
Main Methods:
- Longitudinal phenotyping of 732 T2D patients over 3 years.
- Assessed insulin sensitivity (OGIS), beta-cell glucose sensitivity (GS), and insulin clearance (CLIm) using mixed meal tests.
- Utilized multivariable regression to analyze associations between metabolic patterns and HbA1c progression.
Main Results:
- Faster HbA1c progression was linked to declining OGIS, GS, and increasing CLIm.
- Visceral/liver fat and lipid profiles also independently, though weakly, correlated with glycemic deterioration.
- A stable single trait (OGIS, GS, or CLIm) significantly reduced the proportion of fast progressors.
Conclusions:
- Worsening insulin sensitivity, beta-cell function, insulin clearance, and metabolic factors drive T2D glycemic deterioration.
- Maintaining stable insulin sensitivity, beta-cell function, or insulin clearance may be key to preventing disease progression.
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