Patterns of diffusion kurtosis changes in Parkinson's disease subtypes

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00159816%3A_____%2F20%3A00074045" target="_blank" >RIV/00159816:_____/20:00074045 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216224:14740/20:00118221 RIV/00216305:26220/20:PU137578

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S1353802020308257" target="_blank" >https://www.sciencedirect.com/science/article/pii/S1353802020308257</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.parkreldis.2020.10.032" target="_blank" >10.1016/j.parkreldis.2020.10.032</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Patterns of diffusion kurtosis changes in Parkinson's disease subtypes

Popis výsledku v původním jazyce

Background: Diffusion kurtosis imaging has been applied to evaluate white matter and basal ganglia microstructure in mixed Parkinson&apos;s disease (PD) groups with inconclusive results. Objectives: To evaluate specific patterns of kurtosis changes in PD and to assess the utility of diffusion imaging in differentiating between healthy subjects and cognitively normal PD, and between PD with and without mild cognitive impairment. Methods: Diffusion scans were obtained in 92 participants using 3T MRI. Differences in white matter were tested by tract-based spatial statistics. Gray matter was evaluated in basal ganglia, thalamus, hippocampus, and motor and premotor cortices. Brain atrophy was also assessed. Multivariate logistic regression was used to identify a combination of diffusion parameters with the highest discrimination power between groups. Results: Diffusion kurtosis metrics showed a significant increase in substantia nigra (p = 0.037, Hedges&apos; g = 0.89), premotor (p = 0.009, Hedges&apos; g = 0.85) and motor (p = 0.033, Hedges&apos; g = 0.87) cortices in PD with normal cognition compared to healthy participants. Combined diffusion markers in gray matter reached 81% accuracy in differentiating between both groups. Significant white matter microstructural changes, and kurtosis decreases in the cortex were present in cognitively impaired versus cognitively normal PD. Diffusion parameters from white and gray matter differentiated between both PD phenotypes with 78% accuracy. Conclusions: Increased kurtosis in gray matter structures in cognitively normal PD reflects increased hindrance to water diffusion caused probably by alpha-synuclein-related microstructural changes. In cognitively impaired PD, the changes are mostly driven by decreased white matter integrity. Our results support the utility of diffusion kurtosis imaging for PD diagnostics.

Název v anglickém jazyce

Patterns of diffusion kurtosis changes in Parkinson's disease subtypes

Popis výsledku anglicky

Background: Diffusion kurtosis imaging has been applied to evaluate white matter and basal ganglia microstructure in mixed Parkinson&apos;s disease (PD) groups with inconclusive results. Objectives: To evaluate specific patterns of kurtosis changes in PD and to assess the utility of diffusion imaging in differentiating between healthy subjects and cognitively normal PD, and between PD with and without mild cognitive impairment. Methods: Diffusion scans were obtained in 92 participants using 3T MRI. Differences in white matter were tested by tract-based spatial statistics. Gray matter was evaluated in basal ganglia, thalamus, hippocampus, and motor and premotor cortices. Brain atrophy was also assessed. Multivariate logistic regression was used to identify a combination of diffusion parameters with the highest discrimination power between groups. Results: Diffusion kurtosis metrics showed a significant increase in substantia nigra (p = 0.037, Hedges&apos; g = 0.89), premotor (p = 0.009, Hedges&apos; g = 0.85) and motor (p = 0.033, Hedges&apos; g = 0.87) cortices in PD with normal cognition compared to healthy participants. Combined diffusion markers in gray matter reached 81% accuracy in differentiating between both groups. Significant white matter microstructural changes, and kurtosis decreases in the cortex were present in cognitively impaired versus cognitively normal PD. Diffusion parameters from white and gray matter differentiated between both PD phenotypes with 78% accuracy. Conclusions: Increased kurtosis in gray matter structures in cognitively normal PD reflects increased hindrance to water diffusion caused probably by alpha-synuclein-related microstructural changes. In cognitively impaired PD, the changes are mostly driven by decreased white matter integrity. Our results support the utility of diffusion kurtosis imaging for PD diagnostics.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

30210 - Clinical neurology

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Parkinsonism &amp; Related Disorders

ISSN

1353-8020

e-ISSN

—

Svazek periodika

81

Číslo periodika v rámci svazku

DEC 2020

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

7

Strana od-do

96-102

Kód UT WoS článku

000603067300023

EID výsledku v databázi Scopus

—