Investigating Brain Microstructural Alterations in Type 1 and Type 2 Diabetes Using Diffusion Tensor Imaging: A...

Area of Science:

• Neuroimaging
• Endocrinology
• Neurology

Background:

• Diabetes mellitus (type 1 and type 2) is linked to microvascular and macrovascular complications affecting brain structure and cognition.
• Conventional Magnetic Resonance Imaging (MRI) can detect brain volume reduction but lacks sensitivity for microstructural changes.
• Diffusion Tensor Imaging (DTI) offers a sensitive MRI technique to quantify brain microstructural abnormalities in diabetes.

Purpose of the Study:

• To systematically review original research using DTI to quantify microstructural alterations in the brain associated with diabetes.
• To explore the relationship between these DTI-derived microstructural changes, cognitive status, and metabolic profiles in individuals with diabetes.

Main Methods:

• Systematic review of published studies employing DTI to investigate brain microstructure in diabetes.
• Inclusion of thirty-eight studies examining the impact of diabetes mellitus on brain microstructure.
• Analysis focused on DTI metrics quantifying microstructural integrity and their correlation with cognitive function and metabolic parameters.

Main Results:

• Both type 1 and type 2 diabetes mellitus are associated with significant alterations in brain microstructure as detected by DTI.
• These microstructural changes correlate with impaired cognitive functions in diabetic populations.
• DTI provides sensitive quantification of brain abnormalities not detectable by conventional MRI.

Conclusions:

• Diabetes mellitus significantly impacts brain microstructure, affecting cognitive abilities.
• DTI is a valuable tool for assessing diabetes-related brain microstructural changes and their cognitive consequences.
• Further research can elucidate the precise mechanisms linking metabolic profiles, microstructural alterations, and cognitive decline in diabetes.