Novel Base-Labile Linkers for Convenient Synthesis, Purification, and Functional Group Introduction in Solid-Phase Glycan Synthesis.

Glycans are essential biomolecules across species, but their structure-property relationships remain poorly understood. Pure oligosaccharide samples are crucial for studying these properties, and their preparation heavily relies on chemical synthesis. The linker used for attaching the oligosaccharide to the solid support is essential during solid-phase glycan synthesis.

Computational and Experimental Elucidation of the Charge-Dependent Acid-Etching Dynamics and Electrocatalytic Performance of Au(SR) (q = -1, 0, +1) Nanoclusters.

Using thiolate-protected Au(SR) nanocluster (NC) with different charge states as the test candidate, how the charge effect affects the etching dynamics of thiolate ligands in acid and the electrocatalytic performance is explored. The ab initio molecular dynamics (AIMD) simulations revealed the charge-dependent reaction kinetics in acid, where the anionic and neutral Au(SCH) (q = -1, 0) favorably react with the acid and partially remove the thiolate ligands via two-step proton attack, while the cationic Au(SCH) NC is acid-resistant with no tendency for -SR removal. Density functional theory (DFT) calculations further predict that the dethiolated Au sites exhibit enhanced catalytic activity for CO electroreduction to CO, with the anionic Au showing significantly superior activity.

Efficient secretory expression, purification, and characterization of lipase in Pseudomonas aeruginosa M18, with multifunctional applications in diagnostics.

Lipase (EC 3.1.1.

The CT findings of extranodal natural killer/T-cell lymphoma, nasal type involving the gastrointestinal tract.

Objectives: To analyze the CT imaging features of extranodal natural killer/T (NK/T)-cell lymphoma, nasal type (ENKTCL-NT) involving the gastrointestinal tract (GI), and to compare them with those of Crohn's disease (CD) and diffuse large B-cell lymphoma (DLBCL).

Materials And Methods: Data were retrospectively collected from 17 patients diagnosed with GI ENKTCL-NT, 68 patients with CD, and 47 patients with DLBCL. The CT findings of ENKTCL-NT were analyzed and compared with those of CD and DLBCL.

Disrupting effects of neonicotinoids and their interaction with metals on thyroid hormone, an evidence of children in a rural area, South China.

Neonicotinoids exposure was found to induce thyroid dysfunction. However, there lack of direct evidence between neonicotinoids exposure and thyroid hormone (TH) disruption in population study, especially in children, which limits the understanding on their health hazard. To fill this knowledge gap, we conducted a cross-sectional study on children of a rural area in South China (n = 88), and analyzed urinary ten neonicotinoids (including metabolites), serum TH, thyroxine-binding globulin (TBG), and thyroid stimulating hormone (TSH) levels.

[Electroacupuncture improves pulmonary function by reducing inflammatory reaction via inhibiting miR-19b-3p to regulate SOCS3/JAK1/STAT3 signaling pathway in mice with chronic obstructive pulmonary disease].

Objectives: To explore whether electroacupuncture(EA) can increase the expression of suppressor of cytokine signaling (SOCS)3 by affecting the expression of miR-19b-3p, inhibiting the continuous activation of janus kinase (JAK)1 /signal transducer and activator of transcription (STAT)3 signaling pathway, and improve pulmonary inflammation in chronic obstructive pulmonary disease (COPD) mice.

Methods: Forty mice were randomly divided into normal, COPD model, COPD+EA, and COPD+miR-19b-3p agomir (agomir)+EA groups. The COPD model was simulated by cigarette smoke exposure for 1 h, twice a day for 3 months.

Thienothiophene-Benzopyran Derivative and AQ4N-Assembled Liposomes for Near-Infrared II Fluorescence Imaging-Guided Phototherapy, Chemotherapy, and Immune Activation.

Phototherapy, including photodynamic therapy (PDT) and photothermal therapy (PTT), has attracted wide attention in tumor treatment. However, the hypoxic tumor microenvironment and the heat shock proteins produced by tumor cells significantly reduce their efficacy. Developing effective phototherapy agents that have high reactive oxygen species generation efficiency and photothermal conversion efficiency (PCE) while simultaneously utilizing the hypoxic tumor microenvironment is of great importance.

Graphene Oxide-Enhanced Nucleation and Growth of Calcium-Silicate-Hydrate Gel at Nanoscale: A Molecular Dynamics Study.

Graphene oxide (GO) enhances the performance of cement-based materials by optimizing the microstructure of calcium-silicate-hydrate (C-S-H). However, the influence of GO on the nucleation and growth of C-S-H gel at nanoscale is unexplored. This study investigates this mechanism by molecular dynamics simulation at nano scale.

Sub-region based histogram analysis of amide proton transfer-weighted MRI for predicting tumor budding grade in rectal adenocarcinoma: a prospective study.

Objective: To explore the sub-regional histogram features of amide proton transfer-weighted (APTw) MRI, compared with those of diffusion-weighted imaging (DWI), in predicting the tumor budding (TB) grade of rectal cancer (RC).

Materials And Methods: This study prospectively enrolled 74 patients with pathologically confirmed RC, who underwent APTw MRI before surgery from July 2022 to March 2023. Hematoxylin-eosin staining was used for TB scoring.

Heavy metals and probabilistic risk assessment via (food and medicine homology) consumption in Guangdong Province, China.

is widely used as the main ingredient of herb tea in Southeast Asia, as well as a traditional Chinese medicine. However, the heavy metal contaminations such as arsenic, cadmium, mercury and lead in may be a cause for concern due to the environment pollution around, plantation and processing contamination. Thus, this study intented to assess both non-carcinogenic risks and carcinogenic risks attributed to cumulative exposure to the four heavy metals in The contaminations levels of heavy metals were determined in 90 batches of And the consumption level was obtained through a questionnaire survey among a total of 6,235 adult participants in Guangdong province.

Synthesis of Iron-Based Prussian Blue Analogues with Ultralong Cycle Performance in a Novel T-Shaped Collision Microreactor.

Iron based Prussian blue analogues (Fe-PBA) hold significant promise cathode materials for sodium ion batteries due to their low cost and desirable electrochemical properties. However, their practical application is often hindered by the presence of vacancy defects and issues of oxidation that arise during the material preparation process. To overcome these challenges, this study introduces an innovative T-shaped collision microreactor aimed at promoting a uniform concentration field, narrowing the gap between material mixing rate and reaction rate, and providing an oxygen-free environment for the synthesis of Fe-PBA.

Genomic investigation and nationwide tracking of pediatric invasive nontyphoidal in China.

Invasive nontyphoidal (iNTS) causes significant concern with ~15% morbidity, affecting populations mainly in African countries. However, iNTS infections among the Chinese pediatric population remain largely unknown. Here, we conducted a genomic investigation to study pediatric iNTS infections in a Chinese hospital.

A review on Gaucher disease: therapeutic potential of β-glucocerebrosidase-targeted mRNA/saRNA approach.

Gaucher disease (GD), a rare hereditary lysosomal storage disorder, occurs due to a deficiency in the enzyme β-glucocerebrosidase (GCase). This deficiency leads to the buildup of substrate glucosylceramide (GlcCer) in macrophages, eventually resulting in various complications. Among its three types, GD2 is particularly severe with neurological involvements.

Flowering time: From physiology, through genetics to mechanism.

Plant species have evolved different requirements for environmental/endogenous cues to induce flowering. Originally, these varying requirements were thought to reflect the action of different molecular mechanisms. Thinking changed when genetic and molecular analysis in Arabidopsis thaliana revealed that a network of environmental and endogenous signaling input pathways converge to regulate a common set of "floral pathway integrators.

Recent Advances in Understanding the Regulatory Mechanism of Plasma Membrane H+-ATPase through the Brassinosteroid Signaling Pathway.

The polyhydroxylated steroid phytohormone brassinosteroid (BR) controls many aspects of plant growth, development and responses to environmental changes. Plasma membrane (PM) H+-ATPase, the well-known PM proton pump, is a central regulator in plant physiology, which mediates not only plant growth and development, but also adaptation to stresses. Recent studies highlight that PM H+-ATPase is at least partly regulated via the BR signaling.

Diagnostic CT of colorectal cancer with artificial intelligence iterative reconstruction: A clinical evaluation.

Objectives: To investigate the clinical value of a novel deep-learning based CT reconstruction algorithm, artificial intelligence iterative reconstruction (AIIR), in diagnostic imaging of colorectal cancer (CRC).

Methods: This study retrospectively enrolled 217 patients with pathologically confirmed CRC. CT images were reconstructed with the AIIR algorithm and compared with those originally obtained with hybrid iterative reconstruction (HIR).

Prognostic value of the ratio of pretreatment carcinoembryonic antigen to tumor volume in rectal cancer.

Background: As a commonly used biomarker in rectal cancer (RC), the prognostic value of carcinoembryonic antigen (CEA) remains underexplored. This study aims to evaluate the prognostic value of pretreatment CEA/tumor volume in RC.

Methods: This retrospective study included patients who underwent pretreatment magnetic resonance imaging (MRI) with histologically confirmed primary rectal adenocarcinoma from November 2012 to April 2018.

Fusion expression, purification, and characterization of cytokeratin 19 fragments in E. coli for enhanced stability in diagnostic applications.

Cytokeratin 19 fragment (CYFRA21-1) serves as a crucial tumor marker in the context of lung cancer patients, playing a pivotal role as a calibrator in the realm of in vitro diagnostics. Nevertheless, during practical application, it has come to light that the recombinantly synthesized full-length CYFRA21-1 antigen exhibits suboptimal stability at the requisite concentration, while the utilization of natural antigens incurs a substantial cost. To address this issue, our investigation harnessed a strategic approach whereby the soluble fragment of cytokeratin 19 (Aa244-400) was integrated into the pET32a vector, subsequently being expressed within E.

Efficacy and Safety of Repetitive Transcranial Magnetic Stimulation for Poststroke Memory Disorder: A Meta-Analysis and Systematic Review.

Background: Patients with post-stroke memory disorder (PSMD) have poor quality of life and it is necessary to identify more beneficial stimulation protocols for treatment with repetitive transcranial magnetic stimulation (rTMS). This meta-analysis was conducted to investigate the efficacy and safety of rTMS for improving memory performance, global cognition, and activities of daily living (ADL) among patients with PSMD.

Methods: The PubMed, Embase, Cochrane Central Register of Controlled Trials (CENTRAL), Chinese Biomedical Literature Database, Chinese National Knowledge Infrastructure, China Science and Technology Journal Database, and Wanfang databases were screened to identify relevant randomized controlled trials.

Causal role of a promoter polymorphism in natural variation of the Arabidopsis floral repressor gene FLC.

Noncoding polymorphism frequently associates with phenotypic variation, but causation and mechanism are rarely established. Noncoding single-nucleotide polymorphisms (SNPs) characterize the major haplotypes of the Arabidopsis thaliana floral repressor gene FLOWERING LOCUS C (FLC). This noncoding polymorphism generates a range of FLC expression levels, determining the requirement for and the response to winter cold.