Neurodegenerative Diseases: From Mechanisms to Therapeutic Approaches, 2nd Edition

A special issue of Biomedicines (ISSN 2227-9059). This special issue belongs to the section "Neurobiology and Clinical Neuroscience".

Deadline for manuscript submissions: 28 February 2026 | Viewed by 718

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Institut de Pharmacologie et de Biologie Structurale, Université Toulouse III—Paul Sabatier, Toulouse, France
Interests: neurodegenerative diseases; neurons; mechanism
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Special Issue Information

Dear Colleagues,

Neurodegenerative diseases are characterized by the progressive degeneration of the nervous system. These diseases result in the progressive and irreversible loss of neurons, leading to cognitive decline or motor dysfunction. The best-known neurodegenerative diseases are Alzheimer's disease, Parkinson's disease, Huntington's disease, amyotrophic lateral sclerosis (ALS), and multiple sclerosis (MS).

Neurodegeneration can result from different mechanisms: (a) Protein misfolding and aggregation. Beta-amyloid peptide and tau protein have been implicated in Alzheimer's disease, alpha-synuclein in Parkinson's disease, and huntingtin in Huntington’s disease. (b) Oxidative stress damages cellular structures, including neurons, and may contribute to their degeneration. (c) Chronic inflammation within the nervous system can exacerbate neuronal damage and contribute to the progression of neurodegenerative diseases. (d) Mutations in specific genes can increase an individual’s susceptibility to developing these diseases. For example, mutations in the APP, PSEN1, and PSEN2 genes are associated with familial forms of early-onset Alzheimer's disease.

The aim of this Special Issue of Biomedicines is to present mechanisms involved in neurodegenerative diseases, or to outline therapeutic approaches with their progress and pitfalls.

Dr. Marie-Lise Maddelein
Guest Editor

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Keywords

  • neurodegenerative diseases
  • neurons
  • mechanism

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Research

10 pages, 236 KiB  
Article
The Relationship Between Systemic Inflammatory Index and Other Inflammatory Markers with Clinical Severity of the Disease in Patients with Parkinson’s Disease
by Aybala Neslihan Alagoz, Aydan Dagdas, Sena Destan Bunul and Guldeniz Cetin Erci
Biomedicines 2025, 13(8), 2029; https://doi.org/10.3390/biomedicines13082029 - 20 Aug 2025
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Abstract
Background/Objectives: Parkinson’s disease (PD) is a progressive neurodegenerative disorder characterized by the loss of dopaminergic neurons in the substantia nigra (SN), pathological accumulation of alpha-synuclein, and chronic neuroinflammation. The aim of this study is to evaluate the serum levels of systemic inflammatory [...] Read more.
Background/Objectives: Parkinson’s disease (PD) is a progressive neurodegenerative disorder characterized by the loss of dopaminergic neurons in the substantia nigra (SN), pathological accumulation of alpha-synuclein, and chronic neuroinflammation. The aim of this study is to evaluate the serum levels of systemic inflammatory markers such as neutrophil–lymphocyte ratio (NLR), neutrophil-HDL ratio (NHR), monocyte-HDL ratio (MHR), platelet–lymphocyte ratio (PLR), IL-6, IGF-1, systemic immune-inflammation index (SII), and systemic inflammation response index (SIRI) in patients with PD, and to analyze the relationship between these markers and the clinical stage of the disease as well as its motor and non-motor symptoms. Methods: Fifty-one patients diagnosed with PD and forty-nine HC matched for age and sex were evaluated prospectively. Results: NLR, NHR, and IGF-1 levels were found to be significantly higher in the PD group compared to the HC group (p < 0.05). There was no significant difference between the two groups in terms of PLR, MHR, SII, and SIRI. No significant relationship was found between the inflammatory markers and disease duration, clinical scales, or symptoms. Conclusions: These findings support the role of systemic inflammation in the pathophysiology of PD. Further multi-center, long-term follow-up studies—including simultaneous measurements of central nervous system inflammation markers—are needed for translation into clinical practice. Full article
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