Publications by authors named "Xu Zhenzhen"

In previous studies, it was established that individuals can implicitly learn spatiotemporal regularities related to how the distribution of target locations unfolds across the time course of a single trial. However, these regularities were tied to the appearance of salient targets that are known to capture attention in a bottom-up way. The current study investigated whether the saliency of target is necessary for this type of learning to occur.

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As immune-checkpoint inhibitors (ICIs) therapy has made great strides in hepatocellular carcinoma (HCC) treatment, improving patient response to this strategy has become the main focus of research. Accumulating evidence has shown that mA methylation plays a crucial role in the tumorigenesis and progression of HCC, while the precise impact of the mA demethylase ALKBH5 on the tumor immune microenvironment (TIME) of HCC remains poorly defined. The clinical significance of ALKBH5 and TIM3 were evaluated in human HCC tissues.

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On December 16, 2022, the FDA approved the adenoviral vector-based gene therapy nadofaragene firadenovec-vncg (brand name Adstiladrin) for the treatment of adult patients with high-risk bacillus Calmette-Guérin (BCG)-unresponsive non-muscle invasive bladder cancer (NMIBC) with carcinoma in situ (CIS). The product represents the first approved adenoviral vector-based gene therapy and the first approved gene therapy for bladder cancer. Determination of efficacy was based on results from Study rAd-IFN-CS-003 (Study CS-003), a single-arm trial in 98 evaluable patients with BCG-unresponsive NMIBC with CIS who received intravesical instillations of the gene therapy product (75 mL of nadofaragene firadenovec at 3 × 1011 viral particles per mL) once every 3 months.

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Background: Hepatocellular carcinoma (HCC) is a highly heterogeneous tumor and a primary cause of cancer-relevant deaths worldwide. The role of reactive oxygen species (ROS) in HCC development is less studied.

Methods: Seurat package and CellMarker database were employed for single-cell RNA sequencing (scRNA-seq) analysis based on the GSE189175 dataset from Gene Expression Omnibus (GEO).

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Alternative splicing (AS) is a crucial mechanism to regulate gene expression and protein complexity. RNA-binding proteins (RBPs) play an important role in regulating abnormal alternative splicing in cancers. However, few resources are available to identify specific RBPs responsible for regulating individual AS event.

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In this work, the thermodynamics and kinetics of the reversible and irreversible processes of cyanidin 3,5--diglucoside and cyanidin 3--(2--glucosyl, 6--sinapoyl)glucoside-2--glucoside, 5--glucoside were studied by covering all pH range (holistic approach). The acylation (i) decreases the mole fraction of the colorless hemiketal in acidic medium and increases that of the colored quinoidal base, (ii) expands the pH domain of the flavylium cation, and (iii) moderately decreases the rate of tautomerization and isomerization of the neutral and monoanionic species. Degradation of cyanidin-3,5--diglucoside in a basic medium occurs in two distinct stages.

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Calcium oxalate (CaOx) crystals induce renal tubular epithelial cell injury and subsequent nephropathy. However, the underlying mechanisms remain unclear. In the present study, single-cell transcriptome sequencing is performed on kidney samples from mice with CaOx nephrocalcinosis.

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Ethnopharmacological Relevance: Scutellaria baicalensis Georgi (SCB, Huangqin) is a traditional medicinal plant used to treat fever and respiratory diseases. SCB has a good therapeutic effect on asthma and anti-inflammation in traditional clinic use. However, the molecular mechanism and targets of SCB in treating asthma are still unclear.

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The interlayer stacking modes of 2D covalent-organic frameworks (COFs) directly influence their structural features, ultimately determining their functional output. However, controllably modulating the interlayer stacking structure in traditional 2D metal-free COFs, based on the same building blocks, remains challenging. Here, two trinuclear copper organic frameworks are synthesized successfully with different interlayer stacking structures: eclipsed AA stacking in Cu-PA-COF-AA and staggered ABC stacking in Cu-PA-COF-ABC, using the same monomers.

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The cotton genus comprises both diploid and allotetraploid species, and the diversity in petal colour within this genus offers valuable targets for studying orthologous gene function differentiation and evolution. However, the genetic basis for this diversity in petal colour remains largely unknown. The red petal colour primarily comes from C, G, K, and D genome species, and it is likely that the common ancestor of cotton had red petals.

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mA modification is a crucial epigenetic regulatory mechanism in diffuse large B-cell lymphoma (DLBCL). Low-dose cardiotonic drugs have been shown to induce apoptosis in DLBCL cells through epigenetic modulation. However, the involvement of the cardiotonic drug ouabain in the malignant progression of DLBCL remains unclear.

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In this study, we combined two distinct extraction and separation techniques with the aim of comprehensively collecting metabolite features in sprouts, particularly hydrophilic compounds. By synergistically analyzing the data using MS-DIAL and MetaboAnalystR, we obtained a greater number of annotated metabolites and explored differences in annotation across analytical tools. We found that this approach significantly increased the number of detected metabolite features and the final identification counts.

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Article Synopsis
  • Older age and being female are linked to higher risks of osteoarthritis and osteoporosis, which prompted a study in China focusing on patient knowledge, attitudes, and practices (KAP) regarding osteoporosis prevention in those with knee osteoarthritis (KOA).
  • A total of 434 KOA patients participated, with results showing median scores indicating a need for better awareness and practices; specifically, knowledge was low, while attitudes and practices were somewhat better.
  • Key factors associated with better KAP scores included female gender, age groups above 56, educational attainment, and longer duration of KOA, highlighting the need for targeted education programs to enhance understanding of osteoporosis prevention among patients.
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Background: Polygoni Cuspidati Rhizoma et Radix (Huzhang in Chinese), refers to the root and rhizome of Polygonum cuspidatum Sieb. et Zucc. Huzhang is commonly used in clinical practice for the prevention and treatment of diabetes and its complications, but its active components and regulatory mechanisms have not yet been thoroughly analyzed.

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The anti-nerve growth factor antibody class of drugs interrupts signaling by blocking NGF binding to TrkA receptors for the treatment of pain; however, this target class of drugs has been associated with serious adverse effects in the joints during clinical trials. DS002 is a novel anti-nerve growth factor antibody drug independently developed by Guangdong Dashi Pharmaceuticals. The main purpose of this study is to explore the correlation between DS002 and pain as well as cartilage and bone metabolism with the help of metabolomics technology and the principle of enzyme-linked reaction, and to examine whether DS002 will produce serious adverse effects in joints caused by its same target class of drugs, in order to provide more scientific basis for the safety and efficacy of DS002.

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rhizoma (Huangjing in Chinese) is a common clinical tonic with the traditional effects of tonifying Qi, nourishing Yin. However, the lack of precise control of processing parameters has led to the uneven quality of processed Huangjing. A prediction model using the CRITIC method optimizes processing by correlating method, component contents, and biological activity, ensuring consistent quality and efficacy.

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This study explored how high hydrostatic pressure (HHP) and proteins (i.e., BSA and HSA) influence the color and chemical stability of cyanidin-3-O-glucoside (C3G) at neutral pH.

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Investigating the impact of exciton-vibration coupling (EC) of molecular aggregates on regulating the excited-state dynamics and controlling room temperature phosphorescence (RTP) emissions is crucial and challenging. We designed and synthesized ArBFO molecules and cultured two crystals with similar molecular packing and completely different luminescent mechanisms from B-form fluorescence to G-form RTP. The mechanism study combining measurement of photophysical properties, time-resolved fluorescence analysis, X-ray diffraction analysis, and theoretical calculations shows that tiny changes in molecular stacking amplify the EC value from B-form to G-form H-aggregates.

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Background: Although blood flow is restored after treatment of myocardial infarction (MI), myocardial ischemia and reperfusion (I/R) can cause cardiac injury, which is a leading cause of heart failure. Gastrodin (GAS) exerts protective effects against brain, heart, and kidney I/R. However, its pharmacological mechanism in myocardial I/R injury (MIRI) remains unclear.

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Ethnopharmacological Relevance: Radix Bupleuri is the root of Bupleurum chinense DC. (BC) and a classic aromatic traditional Chinese medicine. The traditional pharmacological effects of Radix Bupleuri are alleviating bronchial spasms, dilating airways, and promoting the resolution of respiratory inflammation, thereby reducing asthma symptoms.

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Article Synopsis
  • Acute kidney injury (AKI) is a serious complication following cardiac surgery, and the study focuses on identifying modifiable risk factors like frailty and obesity that can influence AKI outcomes.
  • The research analyzed data from 8,785 patients across three international cohorts, with assessments of frailty and body fat percentage relating to AKI risk, revealing that greater frailty and specific body fat levels increase AKI risk.
  • Findings indicated that lower body fat percentage is associated with a decreased likelihood of developing AKI, and this relationship was consistent across different patient cohorts.
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This study showed the significantly differences of basic nutrients and metabolite compounds in nine types of beans involved in soybean, mung bean, pea, and common beans. The metabolomics results showed that serval metabolites such as histidine, proline, 3-alanine, and myricetin which could be used to identify different beans. The random forest model showed that amino acid and fatty acid could be used as special indexes to distinguish different types of beans in practice.

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Article Synopsis
  • Methamphetamine (METH) is a highly abused drug linked to serious health issues, particularly affecting neurons through autophagy (cell self-digestion) and apoptosis (cell death).
  • The study explored the role of Stromal interacting molecule 1 (STIM1) in METH's effects, showing that STIM1 activation triggers neuron autophagy through the p-Akt/p-mTOR signaling pathway.
  • Moreover, METH exposure disrupts calcium balance and induces endoplasmic reticulum (ER) stress, leading to increased levels of pro-apoptotic proteins, suggesting STIM1 could be targeted for therapeutic interventions against METH-induced neurotoxicity.
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Article Synopsis
  • Chronic methamphetamine (METH) exposure is linked to high blood pressure (hypertension) and vascular remodeling, but the exact mechanisms are not fully understood.
  • Researchers developed a mouse model to study METH's effects, discovering that the Sigma1 receptor (Sigmar1) plays a crucial role in hypertension and collagen buildup around blood vessels.
  • The study suggests that targeting Sigmar1 could be a new treatment strategy for METH-induced hypertension and related vascular issues.
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Background: The number of patients undergoing joint replacement procedures is continuously increasing. Tele-equipment is progressively being employed for postrehabilitation of total hip and knee replacements. Gaining a comprehensive understanding of the experiences and requirements of patients undergoing total hip and knee arthroplasty who participate in telerehabilitation can contribute to the enhancement of telerehabilitation programs and the overall rehabilitation and care provided to this specific population.

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