Publications by authors named "Ruxiang Xu"

The recurrence of glioma after treatment has remained an intractable problem for many years. Recently, numerous studies have explored the pivotal role of the mouse double minute 2 (MDM2)/p53 pathway in cancer treatment. Lysine phosphate phosphohistidine inorganic pyrophosphate phosphatase (LHPP), a newly discovered tumor suppressor, has been confirmed in numerous studies on tumors, but its role in glioma remains poorly understood.

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  • TLR4 plays a significant role in neuroinflammation by detecting harmful substances and activating microglia, impacting brain health.
  • Research indicates that TLR4 is highly active in cerebellar Purkinje neurons, influencing motor coordination through non-immune processes, although the exact details are still unclear.
  • Mice lacking TLR4 specifically in Purkinje neurons show motor issues similar to ataxia and various cellular and mitochondrial abnormalities, but these issues can be improved with a BK channel opener, highlighting TLR4's crucial role in maintaining neuronal function.
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  • The study investigates mesial temporal lobe epilepsy (MTLE) seizures, which originate in key brain areas like the amygdala and hippocampus, focusing on their specific neural features during seizures.
  • It examines high frequency oscillations (HFOs) in the seizure onset zones (SOZs) of these regions in 10 drug-resistant MTLE patients using stereo electroencephalography.
  • Findings show significant differences in HFO characteristics between the amygdala and hippocampus, identifying the amygdala's role in seizure generation and the hippocampus's role in seizure propagation, suggesting HFOs may serve as potential biomarkers for MTLE.
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Objective: Some patients with intracranial aneurysms (IAs) cannot undergo three-dimensional computed tomography angiography (3D-CTA) or digital subtraction angiography due to contraindications to contrast agents or radiation. Time-of-flight magnetic resonance angiography (TOF-MRA) offers a contrast-free alternative but lacks cranial bone detail critical for surgical planning. This study evaluates the feasibility of using 3D Slicer to fuse TOF-MRA with thin-section CT images to generate synthetic images resembling CTA for surgical clipping planning.

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Background: Low-grade gliomas (LGG) are a variety of brain tumors that show different clinical outcomes. The methylation of the GSTM5 gene has been noted in the development of LGG, however, its prognostic importance remains uncertain.

Objective: The objective of this study was to examine the correlation between GSTM5 DNA methylation and clinical outcomes in individuals diagnosed with LGG.

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  • Microglial activation after closed head injury plays a complex role in both damaging neurons and aiding their repair, with induced neural stem cells influencing this process through CXCL12/CXCR4 signaling.
  • The study highlights that closed head injury mouse serum triggers nuclear factor-κB activation, which enhances inflammatory markers like CXCL12 and tumor necrosis factor-α while reducing insulin-like growth factor-1.
  • Interventions with CR2-Crry can mitigate the adverse effects of injury-induced inflammation in microglia, and Akt signaling plays a crucial role in enhancing the beneficial effects of induced neural stem cells, promoting recovery from neurological damage.
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Background: Treatment of acute stroke, before a distinction can be made between ischemic and hemorrhagic types, is challenging. Whether very early blood-pressure control in the ambulance improves outcomes among patients with undifferentiated acute stroke is uncertain.

Methods: We randomly assigned patients with suspected acute stroke that caused a motor deficit and with elevated systolic blood pressure (≥150 mm Hg), who were assessed in the ambulance within 2 hours after the onset of symptoms, to receive immediate treatment to lower the systolic blood pressure (target range, 130 to 140 mm Hg) (intervention group) or usual blood-pressure management (usual-care group).

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Background: Stem cell therapy is a promising therapeutic strategy. In a previous study, we evaluated tumorigenicity by the stereotactic transplantation of neural stem cells (NSCs) and embryonic stem cells (ESCs) from experimental mice. Twenty-eight days later, there was no evidence of tumor formation or long-term engraftment in the NSCs transplantation group.

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Spinal cord injury (SCI) can cause permanent impairment to motor or sensory functions. Pre-cultured neural stem cell (NSC) hydrogel scaffolds have emerged as a promising approach to treat SCI by promoting anti-inflammatory effects, axon regrowth, and motor function restoration. Here, in this study, we performed a coaxial extrusion process to fabricate a core-shell hydrogel microfiber with high NSC density in the core portion.

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Objective: To study the classification, diagnosis, and treatment strategies of complex tethered cord syndrome (C-TCS) on the basis of the patients' clinical symptoms, imaging findings, and therapeutic schedule.

Methods: The clinical data of 126 patients with C-TCS admitted to our department from January 2015 to December 2020 were retrospectively analyzed. Classification criteria for C-TCS were established by analyzing the causes of C-TCS.

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The role of superficial temporal artery-to-middle cerebral artery (STA-MCA) bypass in acute ischemic stroke (AIS) is contentious, with no evidence in patients with AIS and large vessel occlusion (AIS-LVO). We conducted a cohort study to assess emergency STA-MCA outcomes in AIS-LVO and a meta-analysis to evaluate STA-MCA outcomes in early AIS treatment. From January 2018 to March 2021, we consecutively recruited newly diagnosed AIS-LVO patients, dividing them into STA-MCA and non-STA-MCA groups.

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Objective: To investigate the surgical treatment strategy of intracranial alveolar echinococcosis (AE) and the clinical outcomes.

Methods: The clinical and follow-up data of 15 intracranial AE patients who underwent surgical treatment in the Departments of Neurosurgery of Sichuan Provincial People's Hospital (SPPH) and People's Hospital of Aba Tibetan and Qiang Autonomous Prefecture (a branch hospital of SPPH) between March 2017 and January 2021 were retrospectively analyzed. Full follow-up data were available for each of the 15 cases.

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This study aimed to screen for key genes related to the prognosis of patients with glioblastoma (GBM). First, bioinformatics analysis was performed based on databases such as TCGA and MSigDB. Inflammatory-related genes were obtained from the MSigDB database.

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Extracerebral tumors often occur on the surface of the brain or at the skull base. It is important to identify the peritumoral sulci, gyri, and nerve fibers. Preoperative visualization of three-dimensional (3D) multimodal fusion imaging (MFI) is crucial for surgery.

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Stem cell-based therapies have been proposed as a potential treatment for neural regeneration following closed head injury. We previously reported that induced neural stem cells exert beneficial effects on neural regeneration via cell replacement. However, the neural regeneration efficiency of induced neural stem cells remains limited.

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Biopolymer microbeads present substantial benefits for cell expansion, tissue engineering, and drug release applications. However, a fabrication system capable of producing homogeneous microspheres with high precision and controllability for cell proliferation, passaging, harvesting and downstream application is limited. Therefore, we developed a co-flow microfluidics-based system for the generation of uniform and size-controllable gelatin-based microcarriers (GMs) for mesenchymal stromal cells (MSCs) expansion and tissue engineering.

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Resistance to traditional antiepileptic drugs is a major challenge in chronic epilepsy treatment. MicroRNA-based gene therapy is a promising alternative but has demonstrated limited efficacy due to poor blood-brain barrier permeability, cellular uptake, and targeting efficiency. Adenosine is an endogenous antiseizure agent deficient in the epileptic brain due to elevated adenosine kinase (ADK) activity in reactive A1 astrocytes.

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Immunocharacteristics-based typing strategies can be used to reflect the similar status of tumors. Therefore, we aimed to demonstrate whether the immune subtypes of GBM have independent prognostic efficacy and whether these subtypes can be used as clinical guidance for predicting the progression of GBM and determining drug sensitivity. In this study, we found that patients with GBM were divided into three conserved immune-related subtypes based on the infiltration level of immune cells, including immunosuppressed, moderate immunoactivity, and high immunoactivity.

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Article Synopsis
  • Ferroptosis is a programmed cell death process linked to Parkinson's disease, implicating the need to identify key genes involved.
  • Acyl-CoA synthetase long-chain family member 4 (ACSL4) plays a crucial role in initiating ferroptosis by esterifying polyunsaturated fatty acids, making it a significant factor in various neurological disorders, including Parkinson's.
  • Increases in ACSL4 expression were observed in the substantia nigra of both MPTP-treated models and PD patients, and reducing its expression or activity protected against neuron death and associated motor deficits.
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Background: Glioma is a common primary central nervous system tumor with complex pathogenesis. DNA damage and repair (DDR) is widely involved in regulating cell proliferation and tumorigenesis by correcting and repairing DNA damage mechanisms. Recent studies have reported the following properties in cancer cells in glioma, increased DNA damage and reduced DNA repair capacity.

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Neural circuits, such as synaptic plasticity and neural activity, are critical components of healthy brain function. The consequent dynamic remodeling of neural circuits is an ongoing procedure affecting neuronal activities. Disruption of this essential process results in diseases.

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Objective: To explore the influence of the type of anterior clinoidal meningioma on surgical strategy planning, surgical approach selection, and postoperative efficacy.

Patients And Methods: We conducted a retrospective analysis of the clinical data of 63 cases, including data on visual function, extent of tumor resection, and postoperative follow-up. Grade I and II approaches were selected according to the type of tumor.

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To confirm whether machine learning algorithms (MLA) can achieve an effective risk stratification of dying within 7 days after basal ganglia hemorrhage (BGH). We collected patients with BGH admitted to Sichuan Provincial People's Hospital between August 2005 and August 2021. We developed standard ML-supervised models and fusion models to assess the prognostic risk of patients with BGH and compared them with the classical logistic regression model.

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Alzheimer's disease is a neurodegenerative disease caused by excessive amyloid β protein-induced neurotoxicity. However, drugs targeting amyloid β protein production face many problems, such as the low utilization rate of drugs by cells and the difficulty of drugs in penetrating the blood-brain barrier. A tetrahedral framework nucleic acid is a new type of nanonucleic acid structure that functions as a therapy and drug carrier.

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