Article
Medicine, Research & Experimental
Zhenfei Ding, Ce Dai, Lin Zhong, Rui Liu, Weilu Gao, Hui Zhang, Zongsheng Yin
Summary: The study demonstrated that Nrg1 could effectively convert reactive astrocytes to oligodendrocytes, inhibit astrogliosis, promote remyelination, protect axons, and improve SCI symptoms, suggesting a promising therapeutic strategy for spinal cord repair.
BIOMEDICINE & PHARMACOTHERAPY
(2021)
Article
Cell Biology
Diessica Padilha Dalenogare, Daniel Souza Monteiro de Araujo, Lorenzo Landini, Mustafa Titiz, Gaetano De Siena, Francesco De Logu, Pierangelo Geppetti, Romina Nassini, Gabriela Trevisan
Summary: This study evaluated the role of transient receptor potential ankyrin 1 (TRPA1) in neuroinflammation underlying pain-like symptoms in multiple sclerosis (MS). The results indicate that TRPA1 primarily promotes spinal neuroinflammation and further strengthens the inhibition of this channel to treat neuropathic pain in MS.
Article
Neurosciences
Hui Wang, Liang Xu, Chuying Lai, Kaiyu Hou, Junliang Chen, Yaowei Guo, Abhijeet Sambangi, Shreya Swaminathan, Chunming Xie, Zheng Wu, Gong Chen
Summary: Olig2 is universally expressed in oligodendrocytes and oligodendrocyte precursor cells in adult mice, with a subpopulation of highly enriched Olig2(+) astrocytes found in specific regions.
Article
Pharmacology & Pharmacy
Longkuo Xia, Jianhuan Qi, Mingming Tang, Jing Liu, Da Zhang, Yanbing Zhu, Baoyang Hu
Summary: Continual deletion of microglia using pexidartinib reduces the production of collagen I and reforms the astrocyte scar, allowing for axon regeneration.
FRONTIERS IN PHARMACOLOGY
(2022)
Article
Cell Biology
R. Vivian Allahyari, Nicolette M. Heinsinger, Daniel Hwang, David A. Jaffe, Javad Rasouli, Stephanie Shiers, Samantha J. Thomas, Theodore J. Price, Abdolmohamad Rostami, Angelo C. Lepore
Summary: This study investigates the astrocyte heterogeneity in the spinal cord and its potential role in synaptic generation. The results suggest that the distribution of astrocyte subpopulations and the expression of synapse formation-associated genes did not change significantly after spinal cord injury in mice. These findings indicate a possible conservation of spinal cord astrocyte heterogeneity across species.
Article
Polymer Science
Paula Regina Gelinski Kempe, Mateus Vidigal de Castro, Victor Campos Khuriyeh, Benedito Barraviera, Rui Seabra Ferreira Jr, Alexandre Leite Rodrigues de Oliveira
Summary: Spinal cord injury leads to severe loss of motor and sensory function. Our study aimed to test the combined treatment of surgical repair with fibrin biopolymer and pharmacological treatment with dimethyl fumarate. Results showed that this combination can protect neurons and promote motor neuron regeneration.
Article
Neurosciences
Lauryn E. New, Yuchio Yanagawa, Glenn A. McConkey, Jim Deuchars, Susan A. Deuchars
Summary: Manipulation of GABA levels in the spinal cord can affect neural stem cell proliferation, providing a potential therapeutic approach for conditions such as multiple sclerosis or spinal cord injury. Controlling GABA levels may promote repair while preventing excessive cell proliferation and tumour formation.
Article
Biochemistry & Molecular Biology
Pauline Michel-Flutot, Laurie Efthimiadi, Lynda Djerbal, Therese B. Deramaudt, Marcel Bonay, Stephane Vinit
Summary: This study evaluated the antioxidant response in phrenic motoneurons following C2 spinal cord lateral hemi-section in rats, and found that the AMPK-Nrf2 signaling pathway plays a significant role in the oxidative stress response after high SCI. Harnessing this pathway could improve the antioxidant response and help in improving diaphragm activity in patients with high SCI.
Review
Immunology
Qi-Ming Pang, Si-Yu Chen, Qi-Jing Xu, Meng Zhang, Da-Fei Liang, Sheng-Ping Fu, Jiang Yu, Zu-Lin Liu, Qian Zhang, Tao Zhang
Summary: This study reviews the effects of neuroinflammation on SCI, with a focus on the contributions and interactions of microglia and astrocytes. It also discusses therapeutic strategies to regulate their immunophenotype in order to suppress inflammation and improve injury prognosis.
INTERNATIONAL IMMUNOPHARMACOLOGY
(2022)
Article
Immunology
Lilan Li, Yu Li, Bingqiang He, Hui Li, Huiyuan Ji, Yingjie Wang, Zhenjie Zhu, Yuming Hu, Yue Zhou, Ting Yang, Chunshuai Sun, Ying Yuan, Yongjun Wang
Summary: Following SCI, two activation states of reactive astrocytes, A1 and A2 subtypes, emerge at lesion sites. A1 astrocytes are neurotoxic while A2 astrocytes have neuroprotective activity. HSF1 plays a key role in suppressing excessive increase of neurotoxic A1 astrocytes.
JOURNAL OF NEUROINFLAMMATION
(2021)
Article
Cell Biology
Pau Gonzalez, Carlos Gonzalez-Fernandez, Francisco Javier Rodriguez
Summary: Research suggests that Wnt5a plays a significant role in neuroprotection after spinal cord injury, with overexpression of Wnt5a potentially leading to reduced neuronal density, accumulation of glial precursors, decreased axon innervation, and impaired motor and bladder function recovery.
JOURNAL OF CELLULAR AND MOLECULAR MEDICINE
(2021)
Article
Cell Biology
Jie Chang, Zhanyang Qian, Binyu Wang, Jiang Cao, Sheng Zhang, Fan Jiang, Renyi Kong, Xiao Yu, Xiaojian Cao, Lei Yang, Hongtao Chen
Summary: This study compared the recovery after spinal cord injury (SCI) following the transplantation of A1 or A2 astrocytes. A1 astrocytes were harmful and upregulated neurotoxic genes, while A2 astrocytes were neuroprotective and upregulated the production of neurotrophic factors. Transplantation of A2 astrocytes significantly improved motor function recovery, reduced glial scar deposition, increased neurofilament formation, and showed potential therapeutic effects for SCI.
CELL COMMUNICATION AND SIGNALING
(2023)
Article
Neurosciences
Yuning Wu, Yuxin Qiu, Minzhi Su, Linjie Wang, Qingjuan Gong, Xuhong Wei
Summary: This study investigates the role of bile acids in alleviating neuropathic pain by activating TGR5 and FXR. The results show that bile acids are downregulated and the expression of CYP7A1 is upregulated in microglia after nerve injury. Furthermore, the expression of TGR5 and FXR is increased in glial cells and GABAergic neurons. Activation of TGR5 or FXR can alleviate mechanical allodynia, and this effect is mediated through potentiation of GABA(A) receptors and inhibition of glial cells activation.
CNS NEUROSCIENCE & THERAPEUTICS
(2023)
Article
Immunology
Ting Yang, Haiyan Jiang, Xinye Luo, Yuxuan Hou, Aicheng Li, Bingqiang He, Xingyuan Zhang, Huifei Hao, Honghua Song, Rixin Cai, Xudong Wang, Yingjie Wang, Chun Yao, Lei Qi, Yongjun Wang
Summary: SCI-activated thrombin acts as a potent inducer of MIF production from astrocytes, contributing to the generation of DAMPs at the lesion site. Exploring the role of thrombin in promoting DAMP production from astrocytes provides a new strategy for the clinical therapy of CNS inflammation.
JOURNAL OF NEUROINFLAMMATION
(2022)
Article
Engineering, Biomedical
Ian Woods, Cian O'Connor, Lisa Frugoli, Sean Kerr, Javier Gutierrez Gonzalez, Martyna Stasiewicz, Tara McGuire, Brenton Cavanagh, Alan Hibbitts, Adrian Dervan, Fergal J. O'Brien
Summary: The study found that Coll-IV/Fn mixture in scaffolds can promote axonal extension of neurons and induce morphological features of astrocytes. By using materials of different stiffness in the scaffold, astrocyte behavior can be regulated, and the production of anti-inflammatory cytokines can be stimulated.
ADVANCED HEALTHCARE MATERIALS
(2022)
Review
Medical Laboratory Technology
Suzan Boutary, Andoni Echaniz-Laguna, David Adams, Julien Loisel-Duwattez, Michael Schumacher, Charbel Massaad, Liliane Massaad-Massade
Summary: CMT1A, caused by a duplication on chromosome 17p11.2, is the most common form of CMT disease. Current treatments are symptomatic, but there is promising potential in PMP22-targeted small interfering RNA and antisense oligonucleotides.
TRANSLATIONAL RESEARCH
(2021)
Article
Neurosciences
Martine El-Etr, Yvette Akwa, Marion Rame, Michael Schumacher, Regine Sitruk-Ware
Summary: The study demonstrated that NES promotes oligodendrocyte progenitor cell proliferation and differentiation into mature OL by regulating the expression of transcription factors Olig2, Myt1, and Sox17, ultimately contributing to remyelination in a demyelination mouse model.
CNS NEUROSCIENCE & THERAPEUTICS
(2021)
Article
Neurosciences
Yousra Laouarem, Abdelmoumen Kassoussi, Amina Zahaf, Tom Hutteau-Hamel, Amine Mellouk, Pierre Bobe, Claudia Mattern, Michael Schumacher, Elisabeth Traiffort
Summary: Hedgehog and androgen signals are coordinated in oligodendrocyte and myelin production, with persistent Hedgehog signaling potentially impeding myelin production, while testosterone has a significant pro-myelinating activity and AR controls neural stem cell commitment. The pathways functionally cooperate in accelerating myelin regeneration, leading to reduced neuroinflammation and functional improvement in demyelinating diseases, with unique effects on cytokines and immune cell populations.
Article
Biochemistry & Molecular Biology
Dalila N. J. Mancino, Maria Luz Leicaj, Analia Lima, Paulina Roig, Rachida Guennoun, Michael Schumacher, Alejandro F. De Nicola, Laura Garay
Summary: Progesterone and its metabolites may play a role in postnatal cerebellar myelination, with higher levels of progesterone observed in P18 and P35 mice, correlating with increased myelination during development.
JOURNAL OF STEROID BIOCHEMISTRY AND MOLECULAR BIOLOGY
(2021)
Article
Neurosciences
Agustina Lara, Ivan Esperante, Maria Meyer, Philippe Liere, Noelia Di Giorgio, Michael Schumacher, Rachida Guennoun, Gisella Gargiulo-Monachelli, Alejandro Federico De Nicola, Maria Claudia Gonzalez Deniselle
Summary: The study on the efficacy of testosterone in the ALS animal model Wobblers mice found that testosterone treatment can alleviate inflammatory responses in the degenerating spinal cord, protect neurons, slow down disease progression, and improve motor performance.
MOLECULAR NEUROBIOLOGY
(2021)
Article
Neurosciences
Alex Carrete, Aida Padilla-Ferrer, Anne Simon, Delphine Meffre, Mehrnaz Jafarian-Tehrani
Summary: The study demonstrates the beneficial effects of etazolate on demyelination, with modest improvement at the functional level but no significant impact on gene expression. Impaired locomotor activity was observed after CPZ intoxication, while spatial memory remained unaffected.
Review
Cell Biology
Alejandro F. De Nicola, Maria Meyer, Laura Garay, Maria Sol Kruse, Michael Schumacher, Rachida Guennoun, Maria Claudia Gonzalez Deniselle
Summary: Progesterone plays a crucial role in neuroprotection by improving neuropathology in the Wobbler mouse model, including reducing motoneuron vacuolization, enhancing mitochondrial respiratory complex activity, and decreasing nitric oxide synthase activity. Additionally, progesterone has differential effects on glial cells, such as increasing oligodendrocyte density and decreasing astrogliosis. These changes are associated with reduced expression of anti-inflammatory markers.
CELLULAR AND MOLECULAR NEUROBIOLOGY
(2022)
Article
Neurosciences
Magalie Frechou, Xiaoyan Zhu, Narender Kumar, Regine Sitruk-Ware, Michael Schumacher, Claudia Mattern, Rachida Guennoun
Summary: The study demonstrates that intranasal administration of Nestorone can effectively promote recovery after stroke and is effective in male mice. Furthermore, the research findings also indicate that neural PR plays a key role in the cerebroprotective effects of Nestorone.
Article
Pharmacology & Pharmacy
Petra Bloms-Funke, Michael Schumacher, Song Liu, Diya Su, Jing Li, Philippe Liere, Rainer Rupprecht, Caroline Nothdurfter, Gregor Bahrenberg, Thomas Christoph, Christopher Habermann, Christa Kneip, Wolfgang Schroeder, Thomas M. Tzschentke, Derek Saunders
Summary: CNP, a chronic neuropathic pain, cannot be effectively prevented or reversed by opioids, necessitating the development of non-opioid options. GRT-X, a novel drug, acts on multiple mechanisms to enhance neuroprotection and neuroregeneration, showing potential as a treatment for CNP.
EUROPEAN JOURNAL OF PHARMACOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Rainer Rupprecht, Christian H. Wetzel, Mario Dorostkar, Jochen Herms, Nathalie L. Albert, Jens Schwarzbach, Michael Schumacher, Inga D. Neumann
Summary: Efficient treatment of stress-related disorders remains challenging. Neurosteroids show rapid therapeutic effects, but long-term use is limited by tolerance and side effects. Promoting endogenous neurosteroidogenesis via TSPO could provide a new treatment option.
MOLECULAR PSYCHIATRY
(2022)
Article
Multidisciplinary Sciences
Amina Zahaf, Abdelmoumen Kassoussi, Tom Hutteau-Hamel, Amine Mellouk, Corentine Marie, Lida Zoupi, Foteini Tsouki, Claudia Mattern, Pierre Bobe, Michael Schumacher, Anna Williams, Carlos Parras, Elisabeth Traiffort
Summary: The neuroprotective, anti-inflammatory, and remyelinating properties of androgens have been well documented in demyelinated male mice and men with multiple sclerosis. However, the effects of androgens mediated by the androgen receptor (AR) in females with low androgen levels have been poorly studied. This study reveals a significant expression of AR in microglial cells in demyelinated lesions of female mice and women with multiple sclerosis, while AR expression is almost undetectable in lesions from male animals and men with multiple sclerosis. Additionally, androgens and estrogens act synergistically in female mice, with androgens driving microglial cell response towards regeneration. Transcriptomic comparisons of demyelinated mouse spinal cords show that androgens up-regulate genes related to neuronal function and myelin production, but down-regulate immune system genes in females and lipid catabolism genes in males. These findings highlight the importance of considering male-female differences in therapeutic approaches for demyelinating diseases as androgens are necessary for proper myelin regeneration in females.
NATURE COMMUNICATIONS
(2023)
Article
Environmental Sciences
Bin Bin Wang, Chao Guo, Sheng Qiao Sun, Xing Nan Zhang, Zhen Li, Wei Jie Li, De Zhi Li, Michael Schumacher, Song Liu
Summary: This study compared the effect of different peripheral nerve injury models on nerve regeneration through animal experiments. It was found that the regeneration speed was faster in the crush injury model, while it was slower in the transection injury model. This provides some reference for the selection of clinical research models.
BIOMEDICAL AND ENVIRONMENTAL SCIENCES
(2023)
Article
Endocrinology & Metabolism
Neike Fernandez, Anthony Petit, Antoine Pianos, Lena Haddad, Michael Schumacher, Philippe Liere, Rachida Guennoun
Summary: Ischemic stroke is a leading cause of disability and death, and aging is the main nonmodifiable risk factor. Neuroactive steroids play a key role in cerebroprotection. Older mice have decreased capacity to metabolize steroids toward the 5 alpha-reduction pathway compared to younger mice, which may contribute to worsened stroke outcomes.
Article
Neurosciences
Yang He, Jun Tang, Meng Zhang, Junjie Ying, Dezhi Mu
Summary: This study investigated the protective effects and mechanisms of human placenta derived mesenchymal stem cells (hPMSCs) transplantation in a rat model of hypoxic-ischemic encephalopathy (HIE). The results showed that hPMSCs transplantation reduced apoptosis and improved long-term neurological prognosis. Furthermore, the downregulation of Sema 3A/NRP-1 expression and activation of the PI3K/Akt/mTOR signaling pathway played a key role in the protective effects of hPMSCs.
Article
Neurosciences
Emily L. Isenstein, Edward G. Freedman, Jiayi Xu, Ian A. DeAndrea-Lazarus, John J. Foxe
Summary: This study evaluated electrophysiological discrimination of parametric somatosensory stimuli in healthy young adults to understand how the brain processes the duration of tactile information. The results showed that participants did not electrophysiologically discriminate between 100 and 115 ms, but they exhibited distinct electrophysiological responses when the deviant stimuli were 130, 145, and 160 ms. These findings contribute to a better understanding of tactile sensitivity in different clinical conditions.
Article
Neurosciences
Juliana R. Souza, Ludmila Lima-Silveira, Daniela Accorsi-Mendonca, Benedito H. Machado
Summary: This study demonstrates that A2A receptors play a crucial role in modulating synaptic transmission in the NTS neurons and are required for the enhancement of glutamatergic transmission observed under short-term sustained hypoxia conditions.
Article
Neurosciences
Miki Hashizume, Rina Ito, Rie Suge, Yasushi Hojo, Gen Murakami, Takayuki Murakoshi
Summary: The basolateral amygdaloid complex (BLA) is closely involved in the formation of emotional memories, including both aversive memory and contextual fear memory. Acute sleep deprivation (SD) disrupts the acquisition of tone-associated fear memory in juvenile rats, but has no significant effect on contextual fear memory. Slow network oscillation in the amygdala contributes to the formation of amygdala-dependent fear memory in relation to sleep.
Article
Neurosciences
Qunxian Wang, Shipeng Guo, Dongjie Hu, Xiangjun Dong, Zijun Meng, Yanshuang Jiang, Zijuan Feng, Weihui Zhou, Weihong Song
Summary: GSDME plays a crucial role in the pathogenesis of Alzheimer's disease by regulating the switch from apoptosis to pyroptosis and participating in neuroinflammatory response. Knockdown of GSDME has been shown to improve cognitive impairments, indicating that GSDME could be a therapeutic target for Alzheimer's disease.