scholarly journals Oxidative stress in the medullary respiratory neurons contributes to respiratory dysfunction in the 6‐OHDA model of Parkinson's disease

2020 ◽  
Vol 598 (22) ◽  
pp. 5271-5293
Author(s):  
Bárbara Falquetto ◽  
Karina Thieme ◽  
Marília B. Malta ◽  
Karina C. e Rocha ◽  
Marina Tuppy ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Respiratory Neurons ◽  
Respiratory Dysfunction ◽  
Medullary Respiratory Neurons

Mitochondria as an Easy Target to Oxidative Stress Events in Parkinson's Disease

2012 ◽  
Vol 11 (4) ◽  
pp. 430-438 ◽  
Author(s):  
Marcella Reale ◽  
Mirko Pesce ◽  
Medha Priyadarshini ◽  
Mohammad A Kamal ◽  
Antonia Patruno
Keyword(s):  
Oxidative Stress ◽  
Parkinson’S Disease ◽  
Parkinson's Disease

scholarly journals The Contribution of Microglia to Neuroinflammation in Parkinson’s Disease

2021 ◽  
Vol 22 (9) ◽  
pp. 4676
Author(s):  
Katja Badanjak ◽  
Sonja Fixemer ◽  
Semra Smajić ◽  
Alexander Skupin ◽  
Anne Grünewald
Keyword(s):  
Oxidative Stress ◽  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Inflammatory Cytokine ◽  
Population Ageing ◽  
Future Research ◽  
Cytokine Release ◽  
Vicious Cycle ◽  
Inflammatory Processes ◽  
Great Evidence

With the world’s population ageing, the incidence of Parkinson’s disease (PD) is on the rise. In recent years, inflammatory processes have emerged as prominent contributors to the pathology of PD. There is great evidence that microglia have a significant neuroprotective role, and that impaired and over activated microglial phenotypes are present in brains of PD patients. Thereby, PD progression is potentially driven by a vicious cycle between dying neurons and microglia through the instigation of oxidative stress, mitophagy and autophagy dysfunctions, a-synuclein accumulation, and pro-inflammatory cytokine release. Hence, investigating the involvement of microglia is of great importance for future research and treatment of PD. The purpose of this review is to highlight recent findings concerning the microglia-neuronal interplay in PD with a focus on human postmortem immunohistochemistry and single-cell studies, their relation to animal and iPSC-derived models, newly emerging technologies, and the resulting potential of new anti-inflammatory therapies for PD.

scholarly journals Oxidative stress and Parkinson’s disease

2015 ◽  
Vol 9 ◽  
Author(s):  
Javier Blesa ◽  
Ines Trigo-Damas ◽  
Anna Quiroga-Varela ◽  
Vernice R. Jackson-Lewis
Keyword(s):  
Oxidative Stress ◽  
Parkinson’S Disease ◽  
Parkinson's Disease

scholarly journals The Parkinson’s Disease-Associated Protein DJ-1 Protects Dictyostelium Cells from AMPK-Dependent Outcomes of Oxidative Stress

Cells ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 1874
Author(s):  
Suwei Chen ◽  
Sarah J. Annesley ◽  
Rasha A. F. Jasim ◽  
Paul R. Fisher
Keyword(s):  
Oxidative Stress ◽  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Mitochondrial Dysfunction ◽  
Mitochondrial Respiration ◽  
Cysteine Residue ◽  
Reduced Form ◽  
Dependent Manner ◽  
Loss Of Function ◽  
Cellular Pathology

Mitochondrial dysfunction has been implicated in the pathology of Parkinson’s disease (PD). In Dictyostelium discoideum, strains with mitochondrial dysfunction present consistent, AMPK-dependent phenotypes. This provides an opportunity to investigate if the loss of function of specific PD-associated genes produces cellular pathology by causing mitochondrial dysfunction with AMPK-mediated consequences. DJ-1 is a PD-associated, cytosolic protein with a conserved oxidizable cysteine residue that is important for the protein’s ability to protect cells from the pathological consequences of oxidative stress. Dictyostelium DJ-1 (encoded by the gene deeJ) is located in the cytosol from where it indirectly inhibits mitochondrial respiration and also exerts a positive, nonmitochondrial role in endocytosis (particularly phagocytosis). Its loss in unstressed cells impairs endocytosis and causes correspondingly slower growth, while also stimulating mitochondrial respiration. We report here that oxidative stress in Dictyostelium cells inhibits mitochondrial respiration and impairs phagocytosis in an AMPK-dependent manner. This adds to the separate impairment of phagocytosis caused by DJ-1 knockdown. Oxidative stress also combines with DJ-1 loss in an AMPK-dependent manner to impair or exacerbate defects in phototaxis, morphogenesis and growth. It thereby phenocopies mitochondrial dysfunction. These results support a model in which the oxidized but not the reduced form of DJ-1 inhibits AMPK in the cytosol, thereby protecting cells from the adverse consequences of oxidative stress, mitochondrial dysfunction and the resulting AMPK hyperactivity.

Oxidative stress and regulated cell death in Parkinson’s disease

2021 ◽  
Vol 67 ◽  
pp. 101263
Author(s):  
P.A. Dionísio ◽  
J.D. Amaral ◽  
C.M.P. Rodrigues
Keyword(s):  
Oxidative Stress ◽  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Cell Death ◽  
Regulated Cell Death
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