Vascular, flow and perfusion abnormalities in Parkinson’s disease

Category: Papers
Related Topics: parkinson's, qsm, STAGE

Author(s): Chunyan Zhanga,1 , Bo Wub,1 , Xiao Wanga , Chen Chena , Ruichen Zhaoa , Hong Luc , Hongcan Zhuc , Bing Xuec , Hong Liangc , Sean K. Sethid , E. Mark Haacked , Jinxia Zhue , Yuanyuan Penga , Jingliang Chenga,∗
Journal: Parkinsonism and Related Disorders
Published: 2020
Read Full Paper: https://www.prd-journal.com/article/S1353-8020(20)30048-1/fulltext

Abstract

Reduced flow into the brain or decreased jugular venous outflow from the brain may serve as a potential biomarker for Parkinson’s disease (PD). Our goal was to compare the presence of vascular abnormalities, flow, and increases in midbrain iron content (a hallmark of the disease) in patients with PD.

Methods

A total of 85 PD patients and 85 healthy controls (HCs) were imaged at 3T. We assessed vascular abnormalities using magnetic resonance (MR) venography, average cerebral blood flow using 2D flow quantification, and substantia nigra iron content using susceptibility mapping.

Results

Fifty-two percent (52%) of the PD subjects showed venous structural and functional abnormalities in the two most severe categories, while ony 14% of the HC group showed these abnormalities. Total arterial flow (tA) was significantly lower for the PD group (10.9 ± 1.8 ml/s) compared to the HCs (11.6 ± 2.1 ml/s) (t = 2.28, p = 0.02). Of the PD patients (HCs), 42% (14%) had little flow on the left side. PD patients had higher heart rates and lower perfusion and the lower perfusion correlated with increased iron content in the substantia nigra.

Conclusion

Some PD patients showed abnormal left internal jugular veins, lower tA, higher heart rates, and lower perfusion relative to HCs. These indicators could serve as early biomarkers for PD and create new avenues for future studies regarding the etiology of PD.

New & Related

All Resources

Editorial: Quantitative Susceptibility Mapping in Neurodegeneration

Editorial: Quantitative Susceptibility Mapping in Neurodegeneration

The purpose of this study was to evaluate the effect of resolution on iron content using quantitative susceptibility mapping (QSM); to verify the consistency of QSM across field strengths and manufacturers in evaluating the iron content of deep gray matter (DGM) of the human brain using subjects from multiple sites; and to establish a susceptibility baseline as a function of age for each DGM structure using both a global and regional iron analysis.

read more
Iron Content in Deep Gray Matter as a Function of Age Using Quantitative Susceptibility Mapping: A Multicenter Study

Iron Content in Deep Gray Matter as a Function of Age Using Quantitative Susceptibility Mapping: A Multicenter Study

The purpose of this study was to evaluate the effect of resolution on iron content using quantitative susceptibility mapping (QSM); to verify the consistency of QSM across field strengths and manufacturers in evaluating the iron content of deep gray matter (DGM) of the human brain using subjects from multiple sites; and to establish a susceptibility baseline as a function of age for each DGM structure using both a global and regional iron analysis.

read more
Revealing vascular abnormalities and measuring small vessel density in multiple sclerosis lesions using USPIO

Revealing vascular abnormalities and measuring small vessel density in multiple sclerosis lesions using USPIO

In this study, an ultra-small superparamagnetic iron oxide (USPIO) contrast agent, Ferumoxytol, was administered to induce an increase in susceptibility for both arteries and veins to help better reveal the cerebral microvasculature. The purpose of this work was to examine the presence of vascular abnormalities and vascular density in MS lesions using high-resolution susceptibility weighted imaging (SWI).

read more