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mTOR Signaling in Inflammation, Brain Injuries and Neurodegeneration

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Neurobiology".

Deadline for manuscript submissions: closed (31 March 2023) | Viewed by 2080

Special Issue Editor


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Guest Editor
Department of Biomedicine, Faculty of Medicine, Institute of Neurosciences, Universitat de Barcelona, 08036 Barcelona, Spain
Interests: neurodegenerative disease; Alzheimer’s disease; Parkinson’s disease; Huntington’s disease; traumatic brain injury; ischemia; stroke; dementia; inflammation; mTOR; Akt; proteostasis; signaling

Special Issue Information

Dear Colleagues,

Neurodegeneration is characterized by overlapping impairment in processes including protein synthesis and degradation, protein misfolding and aggregation, activation of neuron cell death mechanisms, inflammation, gliosis, mitochondrial dysfunction, plasticity, and endo/exocytosis.

Neuroinflammation is characterized by the activation of innate immune response due to misfolded/aggregated proteins or systemic infections that trigger microglial and astroglial activation and the consequent release of inflammatory cytokines and chemokines. This response is intended to be beneficial at early stages, promoting aggregates and neuron debris clearance, but if inflammation becomes chronic, it exacerbates neurodegeneration.

These processes are modulated by signaling pathways that, regardless of the underlying core pathophysiological cause, are similarly impaired and associated with converging phenotypes including depression (in early stages of the diseases), motor symptoms, autonomic dysfunction, and dementia.

One of the key kinases involved in neurodegeneration and inflammation is the mechanistic target of rapamycin (mTOR).

This special issue of the International Journal of Molecular Sciences is dedicated to research papers and review articles regarding the involvement of mTOR/Akt signalling in neurodegeneration and the intertwined inflammatory processes that are triggered. We would like to cover mTOR-mediated mechanisms that contribute to synaptic dysfunction, neuron death, circuit impairment, micro- and astrogliosis and neuroinflammation and neurodegeneration.

We encourage authors to submit mTOR-related molecular studies in but not limited to:

  1. a) a neurodegenerative context (AD, PD, HD, ALS).
  2. b) stroke or traumatic brain injuries.
  3. c) pathogenic infections affecting the brain, such as SARS-CoV-2 or HIV.

Prof. Dr. Cristina Malagelada
Guest Editor

Manuscript Submission Information

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Keywords

  • brain disorders
  • mTOR
  • inflammation
  • microglia
  • astroglia
  • cytokine
  • inflammasome
  • stroke
  • traumatic brain injury
  • Parkinson’s disease
  • Alzheimer’s disease
  • Huntington’s disease
  • Amyotrophic Lateral Sclerosis
  • SARS-CoV2
  • HIV

Published Papers (1 paper)

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Research

13 pages, 9533 KiB  
Article
Hyperbaric Oxygen Therapy Alleviates Paclitaxel-Induced Peripheral Neuropathy Involving Suppressing TLR4-MyD88-NF-κB Signaling Pathway
by Shih-Hung Wang, Shu-Hung Huang, Meng-Chien Hsieh, I-Cheng Lu, Ping-Ruey Chou, Ming-Hong Tai and Sheng-Hua Wu
Int. J. Mol. Sci. 2023, 24(6), 5379; https://doi.org/10.3390/ijms24065379 - 11 Mar 2023
Cited by 1 | Viewed by 1758
Abstract
Paclitaxel (PAC) results in long-term chemotherapy-induced peripheral neuropathy (CIPN). The coexpression of transient receptor potential vanilloid 1 (TRPV1) and Toll-like receptor 4 (TLR4) in the nervous system plays an essential role in mediating CIPN. In this study, we used a TLR4 agonist (lipopolysaccharide, [...] Read more.
Paclitaxel (PAC) results in long-term chemotherapy-induced peripheral neuropathy (CIPN). The coexpression of transient receptor potential vanilloid 1 (TRPV1) and Toll-like receptor 4 (TLR4) in the nervous system plays an essential role in mediating CIPN. In this study, we used a TLR4 agonist (lipopolysaccharide, LPS) and a TLR4 antagonist (TAK-242) in the CIPN rat model to investigate the role of TLR4-MyD88 signaling in the antinociceptive effects of hyper-baric oxygen therapy (HBOT). All rats, except a control group, received PAC to induce CIPN. Aside from the PAC group, four residual groups were treated with either LPS or TAK-242, and two of them received an additional one-week HBOT (PAC/LPS/HBOT and PAC/TAK-242/HBOT group). Mechanical allodynia and thermal hyperalgesia were then assessed. The expressions of TRPV1, TLR4 and its downstream signaling molecule, MyD88, were investigated. The mechanical and thermal tests revealed that HBOT and TAK-242 alleviated behavioral signs of CIPN. Immunofluorescence in the spinal cord dorsal horn and dorsal root ganglion revealed that TLR4 overexpression in PAC- and PAC/LPS-treated rats was significantly downregulated after HBOT and TAK-242. Additionally, Western blots showed a significant reduction in TLR4, TRPV1, MyD88 and NF-κB. Therefore, we suggest that HBOT may alleviate CIPN by modulating the TLR4-MyD88-NF-κB pathway. Full article
(This article belongs to the Special Issue mTOR Signaling in Inflammation, Brain Injuries and Neurodegeneration)
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