Publications by authors named "Weiyan Zhang"

High-altitude saline lakes host distinctive microbial communities characterized by specialized adaptations to extreme environmental conditions. However, the underlying mechanisms enabling bacterial survival and physiological function in these habitats remain largely unexplored. In this study, a novel Gram-stain-negative, non-motile, rod-shaped bacterium, designated strain Q332, was isolated from sediment samples collected from Achikkul Lake, a high-altitude saline lake in Xinjiang, northwestern China.

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Background: Rotavirus vaccine is the most effective measure for preventing rotavirus-related diarrhea. The study aims to identify the coverage and trend of the rotavirus vaccine, providing insights for improving vaccination programs.

Methods: Rotavirus vaccination data from 2005 to 2024 were collected and analyzed using Joinpoint regression to identify trends and significant changes over time.

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Introduction: Hypoxic-ischemic encephalopathy (HIE) involves neuroinflammation driven by microglial activation, yet regulatory mechanisms remain poorly defined. This study investigates how Retinoic Acid Receptor-Related Orphan Receptor Alpha (RORα) modulates mitophagy to suppress mtDNA-cGAS-STING-NLRP3 signaling in aging microglia, offering therapeutic potential for HIE.

Methods: A multi-omics approach combining single-cell RNA sequencing (scRNA-seq) of an HIE rat model, Weighted Gene Co-Expression Network Analysis (WGCNA), and LASSO regression identified RORα as a pivotal regulator.

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complex (MAC) is one of the principal pathogenic strains among nontuberculous . Current antibiotics have poor microbiological responses, and repurposed antibiotics are a way to meet clinical needs. Herein, the anti-MAC activity of carrimycin (CAM), a new macrolide, was evaluated vitro and .

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Saline lakes are extreme habitats that host unique microbial communities with high biotechnological potential. In this study, a novel strain, designated Q87, was isolated from Gaxiukule Lake, a high-altitude magnesium sulfate-type saline lake in the Qaidam Basin, China. A polyphasic taxonomic approach, including morphological, physiological, chemotaxonomic, phylogenetic, and genomic analyses, was applied to characterize the isolate.

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The management of Mycobacterium abscessus (MAB) infection presents formidable challenges, necessitating the development of innovative antimicrobial agents and more efficacious combination therapies. The objective of this study was to investigate the in vitro, intracellular, and in vivo antibacterial activity of sudapyridine (WX-081) in combination with clarithromycin (CLR), clofazimine (CFZ), rifabutin (RFB), and linezolid (LZD) against MAB. In vitro, the interaction between WX-081 and other drugs was assessed using the checkerboard method against MAB.

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Objectives: NTB-3119M, a novel benzothiopyranone derivative identified through comprehensive drug development studies, was selected as a promising antituberculosis (anti-TB) candidate. This study systematically evaluated its anti-TB efficacy in vitro and in vivo.

Methods: In vitro analyses encompassed antimicrobial susceptibility testing to determine minimum inhibitory concentrations (MICs) against Mycobacterium tuberculosis H37Rv, 10 drug-susceptible clinical isolates, and 30 multidrug-resistant (MDR) strains, alongside evaluations of minimal bactericidal concentrations (MBCs) using H37Rv and seven clinical isolates.

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Background: Tidal flats are vital coastal ecosystems that play a significant role in organic carbon accumulation and biogeochemical cycles. Members of the family Flavobacteriaceae is known for its ability to degrade complex organic matter, including polysaccharides. However, the ecological roles and metabolic capabilities of Flavobacteriaceae in tidal flat environments remain underexplored.

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Malbranchea cinnamomea produces enzymes essential for degrading lignocellulosic materials, converting agricultural waste into high-value compounds like xylooligosaccharides (XOSs). In this study, we cloned and expressed an endo-1,4-β-xylanase, McXyn0243, from M. cinnamomea and investigated its enzymatic properties and application in agricultural wastes degradation.

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Pneumococcal Polysaccharide Vaccine (PPSV23) is available for free in some Chinese cities for elderly patients and those with comorbidities. However, there is a lack of studies summarizing its preventive effect specifically in Chinese adults. This review aims to discuss the epidemiology of pneumococcal disease, coverage and effectiveness of PPSV23 vaccination, elderly individuals and patients with comorbidities, coadministration of PPSV23 vaccine with other vaccines, and future directions for its use in China.

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Decision trees, as a structured representation of medical knowledge, are critical resources for building clinical decision support systems. Their structured decision pathways can be used for retrieval to enhance clinical decision making. Currently, mainstream methods mainly utilize large language models and in-context learning for decision tree extraction.

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Two Gram-stain-negative, curved-rod-shaped, non-motile and aerobic bacteria W6 and I13 were isolated from marine sediment samples collected from Meishan Island located in the East China Sea. Catalase and oxidase activities and hydrolysis of Tween 40, 60 and 80 were positive for both strains, while nitrate reduction, indole production, methyl red reaction and HS production were negative. Phylogenetic analyses based on 16S rRNA and genome sequences revealed that strains W6 and I13 formed distinct phylogenetic lineages within the genera and , respectively.

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PP2C serine-threonine phosphatase Wip1 plays an important role in normal tissue homeostasis, stress signaling and pathogenesis of various human diseases. It is an attractive drug target for cancer treatment and inhibition of its expression or activity constitute a novel therapeutic intervention strategy to prevent the development of various cancers. However, previous strategies for Wip1 suppression may be ineffective in cancers lacking p53.

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Article Synopsis
  • - This research examined the link between systemic inflammation markers and hypertension in U.S. children and adolescents aged 8 to 17, using data from over 6,000 participants obtained from the NHANES survey between 1999 and 2020.
  • - The study found that higher levels of the systemic immune-inflammation index (SII), neutrophil-to-lymphocyte ratio (NLR), and platelet-to-lymphocyte ratio (PLR) were associated with an increased likelihood of developing hypertension, while the lymphocyte-to-monocyte ratio (LMR) showed a negative correlation.
  • - The findings suggest that systemic inflammatory markers could serve as important risk indicators for hypertension, especially in male youth, indicating a need
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Article Synopsis
  • The study explores the role of the protonated S85 residue in astellifadiene synthase EvAS and its significance in the deprotonation-reprotonation sequence of terpene biosynthesis.
  • By utilizing molecular dynamics simulations and site-directed mutagenesis, researchers investigate how the S85 residue acts as a catalytic acid during the biosynthesis process.
  • Mutating the S85 residue resulted in the formation of a new type of tricyclic sesterterpene, highlighting its importance in terpene cyclization.
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Article Synopsis
  • Melon (Cucumis melo L.) is a significant horticultural crop, with the spotted rind being a key quality trait at maturity.
  • Research identified a dominant gene, CmSR, as the regulator of the spotted rind trait, using a BSA-seq method for genetic mapping.
  • The study linked the CmAPRR2 gene on chromosome 4 to this trait, highlighting specific mutations that may affect protein function, and established a marker for future breeding studies.
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Terpene synthases (TPSs) play pivotal roles in generating diverse terpenoids through complex cyclization pathways. Protein engineering of TPSs offers a crucial approach to expanding terpene diversity. However, significant potential remains untapped due to limited understanding of the structure-function relationships of TPSs.

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A Gram-negative, rod-shaped, non-motile and strictly aerobic strain, designated NBU2979, was isolated from a coastal mudflat located on Meishan Island in the East China Sea. Strain NBU2979 grew optimally at 32 °C, with 2.0 % NaCl (w/v) and at pH 7.

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Camellia saponins are important by-products of Camellia Oleifer Abel. processing. In this study, an eco-friendly method based on natural deep eutectic solvents (NaDESs, proline and glycerol at a molar ratio of 2:5) was established to extract saponins from C.

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Birinapant, an antagonist of the inhibitor of apoptosis proteins, upregulates MHCs in tumor cells and displays a better tumoricidal effect when used in combination with immune checkpoint inhibitors, indicating that Birinapant may affect the antigen presentation pathway; however, the mechanism remains elusive. Based on high-resolution mass spectrometry and in vitro and in vivo models, we adopted integrated genomics, proteomics, and immunopeptidomics strategies to study the mechanism underlying the regulation of tumor immunity by Birinapant from the perspective of antigen presentation. Firstly, in HT29 and MCF7 cells, Birinapant increased the number and abundance of immunopeptides and source proteins.

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Fungal bifunctional terpene synthases (BFTSs) catalyze the formation of numerous di-/sester-/tri-terpenes skeletons. However, the mechanism in controlling the cyclization pattern of terpene scaffolds is rarely deciphered for further application of tuning the catalytic promiscuity of terpene synthases for expanding the chemical space. In this study, we expanded the catalytic promiscuity of fusoxypene synthase (FoFS) by a single mutation at L89, leading to the production of three new sesterterpenes.

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Unlabelled: Sudapyridine (WX-081) is a structural analog of bedaquiline (BDQ), which shows anti-tuberculosis and non-tuberculous mycobacteria (NTM) activities but, unlike BDQ, did not prolong QT interval in animal model studies. This study evaluated the antibacterial activity of this novel compound against , , and and . The minimum inhibitory concentration (MIC) of WX-081 against three kinds of non-tuberculous mycobacteria (NTM) clinical strains was determined using microplate-based alamarBlue assay (MABA), and the antibacterial activity of WX-081 against NTM in J774A.

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Motivation: In the medical field, multiple terminology bases coexist across different institutions and contexts, often resulting in the presence of redundant terms. The identification of overlapping terms among these bases holds significant potential for harmonizing multiple standards and establishing unified framework, which enhances user access to comprehensive and well-structured medical information. However, the majority of terminology bases exhibit differences not only in semantic aspects but also in the hierarchy of their classification systems.

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In this work, a sensitive low field nuclear magnetic resonance (LF-NMR) homogeneous immunoassay, also called magnetic resonance switch (MRSw) sensor, for Vibrio parahaemolyticus (VP) was developed. Superparamagnetic 2D nanomaterial was designed and used as the magnetic probe of MRSw sensor. It was GO@SPIONs&Ab, a composite nanomaterial with many superparamagnetic FeO nanoparticles (SPIONs) providing a magnetic signal and VP antibody (Ab) specifically recognizing the target VP evenly distributed on the surface of GO.

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