MRI biomarkers in Huntington's disease

Area of Science:

• Neuroscience
• Radiology
• Genetics

Background:

• Huntington's disease (HD) is a neurodegenerative disorder causing neuronal dysfunction and loss.
• Genetic testing for HD is available, identifying individuals at risk.
• Sensitive biomarkers are crucial for evaluating therapeutic trials and monitoring disease progression.

Purpose of the Study:

• To review Magnetic Resonance Imaging (MRI) techniques as potential biomarkers for Huntington's disease (HD).
• To discuss the utility of MRI in detecting early brain changes in premanifest and early-stage HD.
• To contextualize MRI findings within different stages of HD progression.

Main Methods:

• Review of conventional MRI techniques.
• Discussion of advanced MRI methods including Diffusion Tensor Imaging (DTI), Magnetization Transfer Imaging (MTI), Magnetic Resonance Spectroscopy (MRS), and Functional MRI (fMRI).
• Analysis of MRI-derived parameters for their biomarker potential in HD.

Main Results:

• MRI techniques can identify brain abnormalities in premanifest HD, before clinical symptoms emerge.
• MRI-derived parameters show promise in detecting neuronal dysfunction and loss characteristic of HD.
• These imaging biomarkers can facilitate early detection and monitoring of disease progression.

Conclusions:

• MRI is a strong candidate for a sensitive biomarker in Huntington's disease (HD) due to its ability to detect subclinical brain changes.
• MRI facilitates early detection of HD-related neuropathology and aids in monitoring disease progression from the premanifest stage.
• The reviewed MRI techniques offer valuable tools for assessing disease status and evaluating therapeutic interventions in HD research.