3,301,187 results match your criteria: "China; The Fourth Affiliated Hospital of Guangxi Medical University[Affiliation]"

Independent component analysis of brain network in drug-resistant epilepsy patients with vagus nerve stimulators.

Int J Neurosci

January 2025

Department of Functional Neurosurgery, Beijing Institute of Functional Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China.

Purpose: To investigate the activity of default mode network (DMN), frontoparietal network (FPN) and cerebellar network (CN) in drug-resistant epilepsy (DRE) patients undergoing vagus nerve stimulation (VNS).

Methods: Fifteen patients were recruited and underwent resting-state fMRI scans. Independent component analysis and paired sample t-tests were used to examine activity changes of DMN, FPN and CN before and after VNS.

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The death signaling complex comprising extrasynaptic NMDAR and TRPM4 plays a pivotal role in the pathogenesis of ischemic stroke. Targeting the protein-protein interactions between NMDAR and TRPM4 represents a promising therapeutic strategy for ischemic stroke. Herein, we describe the discovery of a novel series of NMDAR/TRPM4 interaction interface inhibitors aimed at enhancing neuroprotective efficacy and optimizing pharmacokinetic profiles.

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Dietary Methionine Restriction Alleviates Cognitive Impairment in Alzheimer's Disease Mice via Sex-Dependent Modulation on Gut Microbiota and Tryptophan Metabolism: A Multiomics Analysis.

J Agric Food Chem

January 2025

Laboratory of Functional Chemistry and Nutrition of Food, College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China.

Plant-based foods with low methionine contents have gained increasing interest for their potential health benefits, including neuroprotective effects. Methionine restriction (MR) linked to a plant-based diet has been shown to mitigate neurodegenerative diseases such as Alzheimer's disease (AD) through mechanisms that involve the gut microbiota. In this study, a 16-week MR diet (0.

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Dynamic Features Driven by Stochastic Collisions in a Nanopore for Precise Single-Molecule Identification.

J Am Chem Soc

January 2025

Molecular Sensing and Imaging Center, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China.

Nanopore technology holds great potential for single-molecule identification. However, extracting meaningful features from ionic current signals and understanding the molecular mechanisms underlying the specific features remain unresolved. In this study, we uncovered a distinctive ionic current pattern in a K238Q aerolysin nanopore, characterized by transient spikes superimposed on two stable transition states.

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A pair of aza-BODIPY isomers, 1,7-di--butyl-3,5-dinaphthyl (Nap-BDP) and 1,7-dinaphthyl-3,5-di--butyl (revNap-BDP), were prepared in this study. According to the single crystal X-ray analysis, Nap-BDP exhibited an orthogonal structure. Owing to the difference in orthogonality and -Bu rotation between Nap-BDP and revNap-BDP, their spectral performances, including maximum absorption and emission, full width at half maximum, fluorescence quantum yield, photostability, singlet oxygen generation and photothermal conversion efficiency, were obviously different.

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is a foodborne pathogen linked to severe infections in infants and often associated with contaminated powdered infant formula. The RecA protein, a key player in DNA repair and recombination, also influences bacterial resilience and virulence. This study investigated the impact of deletion on the pathogenicity and environmental stress tolerance of BAA-894.

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A TiO/CdS heterostructure has been widely investigated as a potential photoanode for photoelectrochemical (PEC) water splitting for hydrogen evolution. However, the efficiency and stability still remain challenging due to the sluggish reaction dynamics for water oxidation and easy photocorrosion of CdS. Here we report a ternary TiO/CdS/IrO heterostructure with IrO as a hole transport layer for PEC glycerol oxidation coupled with hydrogen evolution.

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A cell-free gene expression system for prototyping and gene expression analysis.

Appl Environ Microbiol

December 2024

Department of Microbiology, Harvard Medical School, Boston, Massachusetts, USA.

is an obligate anaerobic, Gram-positive bacterium that produces toxins. Despite technological progress, conducting gene expression analysis of under different conditions continues to be labor-intensive. Therefore, there is a demand for simplified tools to investigate the transcriptional and translational regulation of .

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Intelligent soft robots that integrate both structural color and controllable actuation ability have attracted substantial attention for constructing biomimetic systems, biomedical devices, and soft robotics. However, simultaneously endowing single-layer cholesteric liquid crystal elastomer (CLCE) soft actuators with reversible 3D deformability and vivid structural color changes is still challenging. Herein, a multi-responsive (force, heat and light) single-layer 3D deformable soft actuator with vivid structural color-changing ability is realized through the reduced graphene oxide (RGO) deposition-induced Janus structure of the CLCE using a precisely-controlled evaporation method.

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Novel inhibition of sortase A by plantamajoside: implications for controlling multidrug-resistant infections.

Appl Environ Microbiol

December 2024

Department of Gastrocolorectal Surgery, General Surgery Center, The First Hospital of Jilin University, Changchun, Jilin, China.

In confronting the significant challenge posed by multidrug-resistant (MDR) pathogens, particularly methicillin-resistant (MRSA), the development of innovative anti-infective strategies is essential. Our research focuses on sortase A (SrtA), a vital enzyme for anchoring surface proteins in . We discovered that plantamajoside (PMS), a phenylpropanoid glycoside extracted from .

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Improved doramectin production based on high-throughput screening and medium optimization in .

Prep Biochem Biotechnol

January 2025

College of Chemical Engineering, Shijiazhuang University, Shijiazhuang, Hebei Province, China.

Doramectin, a 16-membered macrocyclic lactone that is widely used in the treatment of mammalian parasitic diseases. Doramectin was produced by mutant using cyclohexanecarboxylic acid as a precursor. As a semi-synthetic insecticidal agent produced, the production of doramectin was low, which could not be satisfy the demands of industrial fermentation.

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Chikungunya virus (CHIKV), an enveloped positive-sense RNA virus, is a member of the alphaviruses and cause fever and arthralgia in humans. We performed genome-wide CRISPR/Cas9-based screens and identified Y-box binding protein 1 (YBX1) as an essential cellular factor for CHIKV. Deficiency of YBX1 inhibited CHIKV RNA replication and impaired virus production.

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Unlabelled: Porcine reproductive and respiratory syndrome (PRRS) remains a major threat to animal health and causes substantial economic losses worldwide. The nonstructural protein 11 (NSP11) of the causative agent, PRRS virus (PRRSV), contains a highly conserved nidoviral uridylate-specific endoribonuclease (NendoU) domain essential for viral replication and immune evasion. Targeting NSP11 offers a novel approach to antiviral intervention.

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Tetraspanin CD81 serves as a functional entry factor for porcine circovirus type 2 infection.

J Virol

December 2024

Key Laboratory of Animal Disease Diagnostics and Immunology, Ministry of Agriculture, MOE International Joint Collaborative Research Laboratory for Animal Health & Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu, China.

Porcine circovirus type 2 (PCV2) is the primary causative agent of porcine circovirus-associated disease, clinically resulting in immunosuppression and co-infections with other pathogens in infected pigs. The mechanism of PCV2 infection remains unclear. In this study, we firstly found that the tetraspanin CD81 in PK-15 cells interacts with PCV2 Cap protein by using virus overlay protein-binding assay combined with mass spectrometry.

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We conducted metagenomic sequencing on a stool sample collected from urban-dwelling and obtained a metagenome-assembled genome of . Phylogenetic analysis revealed that this strain is closely related to the one isolated from dogs, forming a distinct clade separate from the reference genome.

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Emerging tick-borne orthonairovirus infections pose a growing global concern, with limited understanding of the viral ovarian tumor-like cysteine proteases (vOTUs) encoded by novel orthonairoviruses. These vOTUs, a group of deubiquinylases (DUBs), disrupt the innate immune response. Yezo virus (YEZV), a recently discovered pathogenic orthonairovirus, was first reported in Japan in 2021.

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NADPH-Independent Fluorescent Probe for Live-Cell Imaging of Heme Oxygenase-1.

ACS Sens

January 2025

Hubei Key Laboratory of Genetic Regulation & Integrative Biology, Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, School of Life Sciences, Central China Normal University, Wuhan 430079, China.

Heme oxygenase-1 (HO-1) catalyzes heme degradation on the consumption of NADPH and molecular oxygen. As an inducible enzyme, HO-1 is highly induced in various disease states, including cancer. Currently, two fluorescent probes for HO-1 have been designed based on the catalytic activity of HO-1, in which the probes serve as a substrate, so NADPH is required to enable the detection.

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Unlabelled: Quorum sensing (QS) can regulate diverse critical phenotypic responses in (), enabling bacterial adaptation to external environmental fluctuations and optimizing population advantages. While there is emerging evidence of QS's involvement in influencing phage infections, our current understanding remains limited, necessitating further investigation. In this study, we isolated and characterized a novel phage designated as BUCT640 that infected PAO1.

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How does gut microbiota affect the vaginitis axis? The mediating role of plasma metabolites.

Microbiol Spectr

December 2024

Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China.

Vaginitis is the most common problem afflicting women of childbearing age. However, the underlying etiological factors remain poorly understood, leading to recurrent vaginitis and constraining clinical management. Here, we explored whether the gut microbiota influences the risk of vaginitis by performing a two-sample Mendelian randomization analysis using the largest genome-wide association studies to date.

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A novel, highly diastereoselective, and metal-free synthesis of multisubstituted piperidines via an S1 approach is reported in this study. The method allows for the preparation of highly functionalized compounds with exceptional diastereomeric selectivities and consistently reproducible yields. These compounds are of significant interest due to their remarkable biological activities toward influenza endonuclease.

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We conducted a systematic review and meta-analysis to evaluate the outcomes of Allogeneic hematopoietic stem cell transplantation (Allo-HSCT) in the treatment of Shwachman-Diamond syndrome (SDS). A literature search was performed on PubMed, Embase, and Web of Science. After screening 397 articles, 10 studies were included.

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Halide-free ion pair organocatalyst from biobased α-hydroxy acid for cycloaddition of CO to epoxide.

Org Biomol Chem

January 2025

State Key Laboratory Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30 Puzhu Road South, Nanjing 211816, China.

The cycloaddition of CO to epoxide (CCE) reactions produce valuable cyclic carbonates useful in the electrolytes of lithium-ion batteries, as organic solvents, and in polymeric materials. However, halide-containing catalysts are predominantly used in these reactions, despite halides being notoriously corrosive to steel processing equipment and residual halides also having harmful effects. To eliminate the reliance on halides as cocatalyst in most CCE reactions, halide-free catalysts are highly desirable.

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The number of cases of Alzheimer's disease (AD) characterized by progressive amnestic syndrome is dramatically increased with population aging. It is urgent to detect and diagnose this disease early. The state of amyloid-beta protein 1-42 (Aβ) was commonly regarded as a hallmark for early diagnosis of AD.

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Unlabelled: and are recognized as significant opportunistic pathogens affecting aquatic animals and humans. However, their infections in amphibians are poorly documented, and their pathogenicity to the Chinese spiny frog () remains unexplored. This study investigated an outbreak of putrid-skin disease among on a farm in Lishui City, Zhejiang Province, China.

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Sugarcane smut caused by is a global sugarcane disease, and studying its molecular pathogenesis is crucial for discovering new prevention and control targets. This study was based on the transcriptome sequencing data of two isolates with different pathogenicities ( and ) of the and screened out a gene encoding the Major Facility Superfamily (MFS) sugar transporter protein and named it . Knockout mutants ( and ) and complementary mutants ( and ) were obtained through polyethylene glycol (PEG)-mediated protoplast transformation technology.

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