203 results match your criteria: "Guangdong 999 Brain Hospital[Affiliation]"

Ischemic Stroke Induces ROS Accumulation, Maladaptive Mitophagy, and Neuronal Apoptosis in Minipigs.

J Microbiol Biotechnol

December 2024

Guangdong Provincial Key Laboratory of Large Animal Models for Biomedicine, South China Institute of Large Animal Models for Biomedicine, School of Pharmacy and Food Engineering, Wuyi University, Jiangmen 529000, P.R. China.

Reactive oxygen species (ROS)-induced adaptive/maladaptive mitophagy plays an essential role in the pathophysiology of acute ischemic stroke (AIS). However, most studies have been conducted using rodent models, which limits their clinical application. In this study, we aimed to develop porcine models of permanent stroke and observe the pathophysiological alterations caused by acute ischemic stroke, focusing on ROS-induced mitophagy.

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Temporal dynamics of neutrophil functions in multiple sclerosis.

Neurobiol Dis

December 2024

Department of Neurology, Mental and Neurological Disease Research Center, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510630, China; Department of Neurology, The First People's Hospital of Kashi, Kashi, Xinjiang 844000, China. Electronic address:

Early neuroinflammatory injury plays a crucial role in initiating and progressing multiple sclerosis (MS). Neutrophils are forerunners to neural lesions in MS, yet the temporal alterations of their functions in MS remains unclear. This study demonstrated a positive correlation between circulatory neutrophil counts and disease activity and severity in treatment-naïve MS patients.

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Extravasation is a key step in tumor metastasis. Epstein‒Barr virus (EBV) plays a crucial role in nasopharyngeal carcinoma (NPC) metastasis. However, the functions and molecular mechanisms of EBV during tumor cell extravasation remains unclear.

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Prognostic Prediction and Risk Stratification of Transarterial Chemoembolization Combined with Targeted Therapy and Immunotherapy for Unresectable Hepatocellular Carcinoma: A Dual-Center Study.

J Hepatocell Carcinoma

November 2024

Department of Interventional Therapy, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, People's Republic of China.

Purpose: The combination of transarterial chemoembolization, molecular targeted therapy, and immunotherapy (triple therapy) has shown promising outcomes in the treatment of unresectable hepatocellular carcinoma (HCC). This study aimed to build a prognostic model to identify patients who could benefit from triple therapy.

Patients And Methods: This retrospective study encompassed 242 patients with HCC who underwent triple therapy from two centers (Training cohort: 158 patients from the Center 1; External validation cohort: 84 patients from the Center 2).

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Background: Parkinson's disease (PD) is a global neurodegenerative ailment impacting millions, causes significant degeneration of dopaminergic neurons in the substantia nigra. Emerging research underscores the gut microbiota's role in PD onset. Yet, investigations in Chinese demographics are lacking.

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Aim: This study investigates the potential of 3-Hz orthostatic tremor (OT) as a diagnostic red-flag sign for differentiating multiple system atrophy (MSA) from Parkinson's disease (PD).

Patients And Methods: A total of 615 PD patients and 234 MSA patients (120 MSA-P and 114 MSA-C) participated. OT at ~ 3 Hz and other frequencies was identified through rhythmic postural sway on the stabilogram map and confirmed by fast Fourier transform (FFT) analysis.

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Lysosomal TFEB-TRPML1 Axis in Astrocytes Modulates Depressive-like Behaviors.

Adv Sci (Weinh)

November 2024

Key Laboratory of Mental Health of the Ministry of Education, Guangdong-Hong Kong-Macao Greater Bay Area Center for Brain Science and Brain-Inspired Intelligence, Guangdong-Hong Kong Joint Laboratory for Psychiatric Disorders, Guangdong Province Key Laboratory of Psychiatric Disorders, Guangdong Basic Research Center of Excellence for Integrated Traditional and Western Medicine for Qingzhi Diseases, Department of Neurobiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, China.

Lysosomes are important cellular structures for human health as centers for recycling, signaling, metabolism and stress adaptation. However, the potential role of lysosomes in stress-related emotions has long been overlooked. Here, it is found that lysosomal morphology in astrocytes is altered in the medial prefrontal cortex (mPFC) of susceptible mice after chronic social defeat stress.

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Oxidative stress is a hallmark of secondary injury of spinal cord injuries. Controlling oxidative stress is crucial for mitigating secondary injury and promoting functional recovery after spinal cord injuries. Calycosin is an O-methylated isoflavone with antioxidant activity.

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variants are associated with generalised epilepsy preceded by febrile seizures.

J Med Genet

August 2024

Department of Neurology, Institute of Neuroscience, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, The Second Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong, China

Article Synopsis
  • Variants linked to immune-related disorders and seizures may also be related to common epilepsy, but their specific role and underlying mechanisms remain unclear.
  • Trio-based whole-exome sequencing identified both de novo and biallelic missense variants in patients with generalized epilepsy following febrile seizures, with varying effects on seizure types and neurological outcomes based on the location of the variants.
  • The study suggests a genotype-phenotype correlation, indicating that different variants can lead to distinct seizure presentations and neurological conditions, particularly emphasizing early onset and favorable outcomes in some patients.
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Objective: Subcortical nuclei such as the thalamus and striatum have been shown to be related to seizure modulation and termination, especially in drug-resistant epilepsy. Enhance diffusion-weighted imaging (eDWI) technique and tri-component model have been used in previous studies to calculate apparent diffusion coefficient from ultra high b-values (ADCuh). This study aimed to explore the alterations of ADCuh in the bilateral thalamus and striatum in MRI-negative drug-resistant epilepsy.

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Astrocytic ALKBH5 in stress response contributes to depressive-like behaviors in mice.

Nat Commun

May 2024

Key Laboratory of Mental Health of the Ministry of Education, Guangdong-Hong Kong-Macao Greater Bay Area Center for Brain Science and Brain-Inspired Intelligence, Guangdong-Hong Kong Joint Laboratory for Psychiatric Disorders, Guangdong Province Key Laboratory of Psychiatric Disorders, Guangdong Basic Research Center of Excellence for Integrated Traditional and Western Medicine for Qingzhi Diseases, Department of Neurobiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China.

Epigenetic mechanisms bridge genetic and environmental factors that contribute to the pathogenesis of major depression disorder (MDD). However, the cellular specificity and sensitivity of environmental stress on brain epitranscriptomics and its impact on depression remain unclear. Here, we found that ALKBH5, an RNA demethylase of N6-methyladenosine (m6A), was increased in MDD patients' blood and depression models.

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A PET-based radiomics nomogram for individualized predictions of seizure outcomes after temporal lobe epilepsy surgery.

Seizure

July 2024

Department of Nuclear Medicine and PET/CT-MRI Center, The First Affiliated Hospital of Jinan University & Institute of Molecular and Functional Imaging, Jinan University, Guangzhou 510630, PR China. Electronic address:

Purpose: To establish and validate a novel nomogram based on clinical characteristics and [F]FDG PET radiomics for the prediction of postsurgical seizure freedom in patients with temporal lobe epilepsy (TLE).

Patients And Methods: 234 patients with drug-refractory TLE patients were included with a median follow-up time of 24 months after surgery. The correlation coefficient redundancy analysis and LASSO Cox regression were used to characterize risk factors.

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Machine learning techniques based on F-FDG PET radiomics features of temporal regions for the classification of temporal lobe epilepsy patients from healthy controls.

Front Neurol

April 2024

Department of Nuclear Medicine and PET/CT-MRI Center, Institute of Molecular and Functional Imaging, The First Affiliated Hospital of Jinan University, Jinan University, Guangzhou, China.

Background: This study aimed to investigate the clinical application of F-FDG PET radiomics features for temporal lobe epilepsy and to create PET radiomics-based machine learning models for differentiating temporal lobe epilepsy (TLE) patients from healthy controls.

Methods: A total of 347 subjects who underwent F-FDG PET scans from March 2014 to January 2020 (234 TLE patients: 25.50 ± 8.

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Treatment algorithms of relapsing multiple sclerosis: an exploration based on the available disease-modifying therapies in China.

Ther Adv Neurol Disord

April 2024

Department of Neurology, Huashan Hospital, Shanghai Medical College, Fudan University, No. 12, Middle Wulumuqi Road, Shanghai 200040, China.

Multiple sclerosis (MS) was defined as a rare disease in China due to its low prevalence. For a long time, interferon β was the only approved disease-modifying therapy (DMT). Since the first oral DMT was approved in 2018, DMT approval accelerated, and seven DMTs were approved within 5 years.

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Nuclear transport of phosphorylated LanCL2 promotes invadopodia formation and tumor progression of glioblastoma by activating STAT3/Cortactin signaling.

J Adv Res

March 2024

Department of Neurosurgery, Institute of Translational Medicine, Shenzhen University First Affiliated Hospital, Shenzhen Second People's Hospital, Shenzhen 518035, China. Electronic address:

Introduction: Our previous study showed that the abscisic acid receptor lanthionine synthetase C-like 2 (LanCL2) is a significant prognostic factor for overall survival in young glioblastoma patients. However, the role of LanCL2 in glioblastoma remains unclear yet.

Objectives: This study aims to investigate the role of LanCL2 in regulating in-vitro cell invasion and in-vivo tumor progression of glioblastoma and its underlying mechanism.

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We determined the genetic association between specific human leucocyte antigen (HLA) loci and autoimmune glial fibrillary acidic protein (GFAP) astrocytopathy. Our results showed that autoimmune GFAP astrocytopathy was associated with HLA-A*3303 (odds ratio [OR] = 2.02, 95% confidence interval [CI] = 1.

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Objective: To establish a machine learning radiomics model that can accurately predict MRI enhancement patterns of glioma based on T2 fluid attenuated inversion recovery (T2-FLAIR) images for optimizing the workflow of magnetic resonance imaging (MRI) examinations of glioma patients.

Methods: We retrospectively collected preoperative MR T2-FLAIR images from 385 patients with pathologically confirmed glioma, who were divided into enhancing and non-enhancing groups according to the enhancement pattern. Predictive radiomics models were established using Gaussian Process, Linear Regression, Linear Regression-Least absolute shrinkage and selection operator, Support Vector Machine, Linear Discriminant Analysis or Naive Bayes as the classifiers in the training cohort (=201)and tested both in the internal (=85) and external validation cohorts (=99).

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Article Synopsis
  • The study investigates the gene responsible for clustering NMDARs at synapses, linked to X-linked intellectual developmental disorder-90, focusing on its association with epilepsy and genotype-phenotype correlations.
  • Whole-exome sequencing identified damaging variants in seven epilepsy patients without hemizygous controls, showing varied seizure presentations and electroencephalography results.
  • Network analysis indicated the gene interacts with numerous other genes related to neurodevelopmental disorders, with patients having variants in functional domains experiencing poorer seizure control compared to those with variants outside these areas.
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Purpose: This study aims to compare the short-term surgery outcomes of the resection of meningiomas and clinical characteristics between elderly and non-elderly patients.

Patients And Methods: This retrospective study included patients who underwent a resection of middle third parasagittal and parafalcine meningiomas between January 2011 and December 2020. All lesions arise from the middle third of the parafalcine or infiltrate superior sagittal sinus (SSS).

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Background: Three-Hz postural leg tremor has recently been identified as highly prevalent in patients with the cerebellar type of multiple system atrophy, but its impact on posture maintenance remains poorly understood.

Patients And Methods: Thirty-seven patients with spinocerebellar ataxia and 58 others with cerebellar type of multiple system atrophy were given Synapsys posturography examinations. Fifty-three healthy controls were also tested.

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NEXMIF variants are associated with epilepsy with or without intellectual disability.

Seizure

March 2024

Department of Neurology, Institute of Neuroscience, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, the Second Affiliated Hospital, Guangzhou Medical University, Guangzhou, 510260, China. Electronic address:

Article Synopsis
  • * The research involved analyzing whole-exome sequencing data from patients with epilepsy and reviewing previously reported NEXMIF variants to understand their effects on brain function.
  • * The findings revealed that certain NEXMIF variants result in a range of epileptic conditions, from mild to severe, with differences in intellectual development influenced by the type of variant and the gender of the patients.
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Purpose: To predict prognosis in HIV-negative cryptococcal meningitis (CM) patients by developing and validating a machine learning (ML) model.

Methods: This study involved 523 HIV-negative CM patients diagnosed between January 1, 1998, and August 31, 2022, by neurologists from 3 tertiary Chinese centers. Prognosis was evaluated at 10 weeks after the initiation of antifungal therapy.

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The ketogenic diet (KD) has shown excellent performance in the treatment of refractory epilepsy, but how it works is not yet fully understood. Gut microbiota is associated with various neurological disorders through the brain-gut axis. Different dietary patterns have different effects on the composition and function of gut microbiota.

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Objective: To explore the relationship between spinous process deviation and lumbar disc herniation in young patients.

Methods: From March 2015 to January 2022, 30 treated young (under the age of 30) patients with lumbar disc herniation were included as the young group. In addition 30 middle-aged patients (quinquagenarian group) with lumbar disc herniation and 30 patients with non-degenerative spinal diseases (young non-degenerative group) were selected as control groups.

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Background: The lack of a well-designed brain tumour registry with standardized pathological diagnoses in underdeveloped countries hinders the ability to compare epidemiologic data across the globe. The National Brain Tumour Registry of China (NBTRC), created in January 2018, is the first multi-hospital-based brain tumour registry in China. Patient data reported to the NBTRC in years 2019-2020 were assessed.

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