Educational content on VJDementia is intended for healthcare professionals only. By visiting this website and accessing this information you confirm that you are a healthcare professional.

Share this video  

AD/PD 2026 | Perforant path fibers as an early biomarker for AD and PD

Yuto Uchida, MD, PhD, Johns Hopkins School of Medicine, Baltimore, MD, discusses the use of perforant path fibers as an early biomarker for Alzheimer’s disease (AD) and Parkinson’s disease (PD), to overcome the limitations of MRI. Dr Uchida highlights that pathological perforant path fibers are the earliest detectable neurodegenerative change, and notes that the number of pathological fibers is the most important parameter of neurodegeneration. This interview took place at the AD/PD™ 2026 International Conference on Alzheimer’s and Parkinson’s Diseases in Copenhagen, Denmark.

These works are owned by Magdalen Medical Publishing (MMP) and are protected by copyright laws and treaties around the world. All rights are reserved.

Transcript

Yeah, the current limitation of MRI biomarkers is the delay in detecting neurodegenerative diseases, especially in PET imaging early can detect amyloid and tau pathology for Alzheimer’s disease. In contrast, neurodegeneration on MRI is just a little bit delayed compared to amyloid and tau imaging biomarkers. That’s the most significant limitation for MRI biomarkers for Alzheimer’s disease and Parkinson’s disease...

Yeah, the current limitation of MRI biomarkers is the delay in detecting neurodegenerative diseases, especially in PET imaging early can detect amyloid and tau pathology for Alzheimer’s disease. In contrast, neurodegeneration on MRI is just a little bit delayed compared to amyloid and tau imaging biomarkers. That’s the most significant limitation for MRI biomarkers for Alzheimer’s disease and Parkinson’s disease. To overcome the issues of the limitation for MRI, we detect perforant path fibers for neurodegeneration. These biomarkers are the earliest detectable neurodegenerative change point for Alzheimer’s and Parkinson’s disease. That’s why we focus on the perforant path fibers neurodegenerative changes. The key finding of this perforant path fiber count is the number of perforant path fibers decreasing along the Alzheimer’s pathology. In contrast, the area and density of the perforant path fiber counts are not decreasing. So the number of perforant path fibers is the most important parameter of neurodegeneration. What we did is to visualize using ex vivo neuroimaging. So we have to translate from ex vivo to in vivo. So we focus on the clinical research using in vivo human MRI brain research.

This transcript is AI-generated. While we strive for accuracy, please verify this copy with the video.

Read more...