Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
Background: Many optical coherence tomography (OCT) studies have reported alterations in the retinal nerve fiber layer (RNFL) in Parkinson's disease (PD) and other neurodegenerative diseases. However, whether retinal alterations are a biomarker for PD is still controversial.
Objective: To investigate potential correlations between PD and morphological changes in retina using OCT and to determine its usefulness as a biomarker of disease progression in PD.
Methods: We performed a cross-sectional study on patients with PD (N = 37) and age-matched controls (N = 42), followed by a longitudinal study of the PD patients (N = 22) over approximately 2.5 years.
Results: The average retinal nerve fiber layer (RNFL) thickness (p < 0.001), total macular thickness (p = 0.001), and macular volume (p = 0.001) were decreased in PD patients compared to controls and had further decreased at the follow-up visit (p < 0.05 for all). The average RNFL thickness and the total thickness of macular were negatively correlated with age in PD patients at baseline. Linear regression analysis revealed that age (p = 0.002, p = 0.003, respectively) and LEDD (p = 0.011, p = 0.013, respectively) were correlated to total thickness and volume of macular in 22 PD patients in the follow-up study. However, no correlation was found between RNFL and other parameters.
Conclusions: PD progression is associated with pronounced retinal structure changes, which can be quantified by OCT. Patterns of RNFL and macular damage detected by the noninvasive technology of OCT can be a useful biomarker for evaluating the progression of PD.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.3233/JPD-171184 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Differential modulation of movement speed with state-dependent deep brain stimulation in Parkinson's disease.
Sci Adv
September 2025
Movement Disorder and Neuromodulation Unit, Department of Neurology, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany.
Subthalamic deep brain stimulation (STN-DBS) provides unprecedented spatiotemporal precision for the treatment of Parkinson's disease (PD), allowing for direct real-time state-specific adjustments. Inspired by findings from optogenetic stimulation in mice, we hypothesized that STN-DBS can mimic dopaminergic reinforcement of ongoing movement kinematics during stimulation. To investigate this hypothesis, we delivered DBS bursts during particularly fast and slow movements in 24 patients with PD.
View Article and Find Full Text PDFGlobal transcriptional analysis of human FHs 74 Int intestinal epithelial cells after exposure to advanced glycation end products.
PLoS One
September 2025
Institute of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology & Immunology, Medical University of Vienna, Vienna, Austria.
Advanced glycation end products (AGEs) and reactive intermediates, such as methylglyoxal, are formed during thermal processing of foods and have been implicated in the pathogenesis of a series of chronic inflammatory diseases. AGEs are thought to directly interact with the intestinal epithelium upon ingestion of thermally processed foods, but their effects on intestinal epithelial cells are poorly understood. This study investigated transcriptomic changes in human intestinal epithelial FHs 74 Int cells after exposure to AGE-modified human serum proteins (AGE-HS), S100A12, a known RAGE ligand, and unmodified human serum proteins (HS).
View Article and Find Full Text PDFTherapeutic Effect of Physical Activity in a Male Wistar Rat Model of Paraquat and Maneb-Induced Parkinson's Disease.
Neurochem Res
September 2025
Biology and Health Laboratory, Faculty of Sciences, Ibn Tofail University, Kenitra, Morocco.
Parkinson's disease (PD) is characterized by impairments in motor control following the degeneration of dopamine-producing neurons located in the substantia nigra pars compacta. Environmental pesticides such as Paraquat (PQ) and Maneb (MB) contribute to the onset of PD by inducing oxidative stress (OS). This study evaluated the therapeutic efficacy of moderate physical activity (PA) on both motor and non-motor symptoms in a Wistar rat model of Paraquat and Maneb (PQ/MB) induced PD.
View Article and Find Full Text PDFEditorial for "Hemispheric Asymmetry of Neuromelanin-Iron Dysfunction in the Substantia Nigra: MRI-Based Evidence for Lateralized Motor Onset in Early-Stage Parkinson's Disease".
J Magn Reson Imaging
September 2025
Neuroimaging Laboratory, School of Medicine, University of Navarra, Pamplona, Spain.
Hemispheric Asymmetry of Neuromelanin-Iron Dysfunction in the Substantia Nigra: MRI-Based Evidence for Lateralized Motor Onset in Early-Stage Parkinson's Disease.
J Magn Reson Imaging
September 2025
Department of Radiology, Huashan Hospital, Fudan University, Shanghai, China.
Background: Parkinson's disease (PD) often presents with lateralized motor symptoms at onset, reflecting asymmetric degeneration of the substantia nigra (SN). Neuromelanin (NM) loss and iron accumulation are hallmarks of SN pathology in PD, but their spatial distribution and interrelationship in PD patients with right-sided (PDR) or left-sided (PDL) motor symptom onset remain unclear.
Purpose: To investigate the spatial vulnerability and interrelationship of NM and iron in the SN among PDR, PDL, and healthy controls (HCs) using MRI.