9,980 results match your criteria: "Northwest University.[Affiliation]"

Personalized Vascularized Tumor Organoid-on-a-Chip for Tumor Metastasis and Therapeutic Targeting Assessment.

Adv Mater

December 2024

Shanghai Xuhui Central Hospital, Zhongshan-Xuhui Hospital, Shanghai Key Laboratory of Medical Epigenetics, Institutes of Biomedical Sciences, Department of Chemistry, Fudan University, Shanghai, 200032, China.

While tumor organoids have revolutionized cancer research by recapitulating the cellular architecture and behaviors of real tumors in vitro, their lack of functional vasculature hinders their attainment of full physiological capabilities. Current efforts to vascularize organoids are struggling to achieve well-defined vascular networks, mimicking the intricate hierarchy observed in vivo, which restricts the physiological relevance particularly for studying tumor progression and response to therapies targeting the tumor vasculature. An innovative vascularized patient-derived tumor organoids (PDTOs)-on-a-chip with hierarchical, tumor-specific microvasculature is presented, providing a versatile platform to explore tumor-vascular dynamics and antivascular drug efficacy.

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In vivo Raman spectroscopy for non-invasive transcutaneous glucose monitoring on animal models and human subjects.

Spectrochim Acta A Mol Biomol Spectrosc

December 2024

Institute of Photonics and Photon-Technology, Northwest University, Xi'an, Shaanxi 710127, China. Electronic address:

Non-invasive glucose monitoring represents a significant advancement in diabetes management and treatment as non-painful alternatives than finger-sticks tests. After developing an integrated Raman spectral system with a 785 nm laser, this study systematically explores the application of in vivo Raman spectroscopy for quantitative, noninvasive glucose monitoring. In addition to observing characteristic glucose spectral information from a mouse model, a strong spectral correlation was also recognized with the blood glucose concentration.

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Rapid Sintering Method for Preparing Matrix-Matched Reference Materials in LA-MC-ICP-MS - An Example of Hafnium.

Anal Chem

January 2025

State Key Laboratory of Continental Dynamics, Department of Geology, Northwest University, Xi'an 710069, China.

Matrix effects can significantly bias Hf isotopic ratios in situ Hf isotope analyses using laser ablation (LA-) multicollector inductively coupled plasma mass spectrometry (MC-ICP-MS), necessitating the use of matrix-matched reference materials for accurate microanalysis. This work introduces a novel fast hot-pressing (FHP) sintering method to produce such reference materials efficiently for in situ analysis. By optimizing sintering temperatures, FHP technology enables the rapid preparation of in situ analysis reference materials with dense structures and homogeneous Hf isotopic compositions.

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A Recombinant Human Collagen and RADA-16 Fusion Protein Promotes Hemostasis and Rapid Wound Healing.

ACS Appl Bio Mater

January 2025

Provincial Key Laboratory of Biotechnology of Shaanxi, Key Laboratory of Resource Biology and Modern Biotechnology in Western China, Faculty of Life Science, Northwest University, 229 North Taibai Road, Xi'an, Shaanxi Province 710069, China.

In this study, we designed a fusion protein, rhCR, by combining human collagen with the self-assembling peptide RADA-16 using genetic engineering technology. The rhCR protein was successfully expressed in . The rhCR can self-assemble into a three-dimensional nanofiber network under physiological conditions.

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Introduction: Thymoma classification is challenging due to its diverse morphology. Accurate classification is crucial for diagnosis, but current methods often struggle with complex tumor subtypes. This study presents an AI-assisted diagnostic model that combines weakly supervised learning with a divide-and-conquer multi-instance learning (MIL) approach to improve classification accuracy and interpretability.

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[Preparation and methodological analysis of chitosan-based ultrasound-coupled hydrogel pads].

Sheng Wu Gong Cheng Xue Bao

December 2024

The College of Life Sciences, Northwest University, Xi'an 710069, Shaanxi, China.

This study aims to optimize the process for preparing chitosan-based ultrasound-coupled hydrogel pads and investigate their application potential in ultrasonography. Chitosan, 2-acrylamido-2-methylpropanesulfonic acid, and N-isopropylacrylamide were used as the main materials to prepare chitosan-based ultrasound-coupled hydrogel pads. The free-radical polymerization conditions were optimized by a three-factor, three-level orthogonal test with the tensile strength and ultrasound image quality of the hydrogel pads as evaluation indicators.

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Collaborative Reduction-Induced Nickel-Catalytic Selective C-S Coupling of Aryl Di/Trithiosulfonates with Aryl Halides.

Org Lett

January 2025

Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710127, People's Republic of China.

Metal-catalytic conversion of polysulfide reagents is a major challenge in organic synthesis due to its challenging activation modes of multiple S-S bonds. The utilization of aryl di- and trithiosulfonates in nickel-catalyzed reductive coupling with aryl halides has been unexplored. Herein, we unprecedentedly describe PPh and Zn-collaborative reduction-induced nickel-catalytic selective C-S coupling of aryl di/trithiosulfonates with aryl halides to access sulfides over common disulfides or trisulfides.

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[Spatiotemporal Patterns and Driving Forces Analysis of Ecological Carbon Sink from 2001 to 2022 in Qinling-Daba Mountains,China].

Huan Jing Ke Xue

January 2025

Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity, College of Urban and Environmental Sciences, Northwest University, Xi'an 710127, China.

The Qinling-Daba Mountain area, an essential ecological conservation zone in China, occupies a pivotal position in the pursuit of carbon neutrality. Using diverse data sources, including temperature, precipitation, solar radiation, and the Normalized Difference Vegetation Index, we refined the CASA model by replacing model indicators. This enhanced model simulated the net primary productivity of vegetation in the Qinling-Daba Mountain area from 2001 to 2022.

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The construction of "zero-free cities" is an effective plan to achieve the carbon peak plan, reduce pollution and carbon emissions, and promote a circular economy. Based on the WARM model and Emission factor method, the total carbon emission reduction of solid waste sources and disposal in each field during the implementation of the zero-free city policy in Chongqing (2017-2021) was calculated, and the total carbon emission reduction of solid waste in each field in 2025 was predicted by scenario. The results showed that: ① After the implementation of cleaner production and green manufacturing policies in Chongqing, the generation intensity of general industrial solid waste decreased to 0.

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Stone selection by wild chimpanzees shares patterns with Oldowan hominins.

J Hum Evol

December 2024

Department of Pedagogy, Chubu Gakuin University, Gifu, 504-0837, Japan; College of Life Science, Northwest University, Xi'an, 710069, China.

The use of broad tool repertoires to increase dietary flexibility through extractive foraging behaviors is shared by humans and their closest living relatives (chimpanzees, Pan troglodytes). However, comparisons between tool use in ancient human ancestors (hominins) and chimpanzees are limited by differences in their toolkits. One feature shared by primate and hominin toolkits is rock selection based on physical properties of the stones and the targets of foraging behaviors.

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Introduction: The Sanxingdui site (Sichuan, China) is the typical representative of the ancient Shu culture, which lasts from the late Neolithic to early Western Zhou. The sacrificial pits are located in the core region of Sanxingdui site, and numerous artifacts are unearthed including ivory, seashells, bronzes, pottery, jade, stone, gold, bone, and horn products. The function of the pits and buried artifacts has always been the focus, but the microbiome around artifacts attracts less attention.

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Daily activities change is linked to acute angle closure occurrence in COVID-19 co-infected patients.

BMC Ophthalmol

December 2024

National Clinical Research Center for Ocular Diseases, Eye Hospital, Wenzhou Medical University, Wenzhou, 3250027, China.

Objectives: To analyze the influence of daily activity-related factors associated with COVID-19 infection on the occurrence of acute angle closure (AAC).

Methods: A multicenter hospital-based study was conducted at 23 ophthalmic centers in 17 provincial-level regions across China to recruit patients with confirmed AAC during the post-lockdown time of COVID-19 (P-TOC) from Dec 7, 2022, to Jan 17, 2023, and three lockdown time of COVID-19 (TOC) periods, which included the TOC-2022 (Sep 7, 2022 - Dec 6, 2022), TOC-2021(Sep 7, 2021 - Jan 6, 2022) and TOC-2020 (Sep 7, 2020 - Jan 6, 2021). Patient information, including demographic, a questionnaire on daily activity changes during the AAC period, COVID-19 history, and eye examination results, was collected.

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Glutamate (Glu) is a crucial excitatory neurotransmitter in the central nervous system that transmits brain information by activating excitatory receptors on neuronal membranes. Physiological studies have demonstrated that abnormal Glu metabolism in astrocytes is closely related to the pathogenesis of epilepsy. The astrocyte metabolism processes mainly involve the Glu uptake through astrocyte EAAT2, the Glu-glutamine (Gln) conversion, and the Glu release.

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β-Asarone Inhibits Carboplatin Resistance in Retinoblastoma Cells Through the UCA1/miR-206/NRP1 Axis.

Biochem Genet

December 2024

Shaanxi Eye Hospital, Xi'an People's Hospital (Xi'an Fourth Hospital), Affiliated People's Hospital of Northwest University, No. 21 Jiefang Rd, Xi'an, 710004, Shaanxi, China.

Retinoblastoma (RB) is an aggressive form of eye cancer. β-Asarone is a bioactive component isolated from the medicinal plant Acorus tatarinowii Schott and has anticancer effects on various human cancers. However, reports regarding the role of β-Asarone in RB remain limited.

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CD8 T cell exhaustion in the tumor microenvironment of breast cancer.

Front Immunol

December 2024

Department of General, Visceral, and Transplant Surgery, Ludwig-Maximilians University, Munich, Germany.

CD8+ T cells are crucial cytotoxic components of the tumor immune system. In chronic inflammation, they become low-responsive, a state known as T cell exhaustion (TEX). The aim of immune checkpoint blockade is to counteract TEX, yet its dynamics in breast cancer remain poorly understood.

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Background: Processing methods of traditional Chinese medicinal materials are critical in influencing the active metabolites and pharmacological effects. The fresh processing method effectively prevents the loss and degradation of metabolites, common in traditional drying and softening processes, while also reducing production costs. (AR), a leguminous botanical drug, is widely utilized in clinical practice and functional foods.

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Variation in the efficiency of extracting calorie-rich and nutrient-dense resources directly impacts energy expenditure and potentially has important repercussions for cultural transmission where social learning strategies are used. Assessing variation in efficiency is key to understanding the evolution of complex behavioural traits in primates. Here we examine evidence for individual-level differences beyond age- and sex-class in non-human primate extractive foraging efficiency.

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Deduced Conservation Strategy of the Macaques in China from their Evolutionary Development.

Zool Stud

July 2024

Shaanxi Key Laboratory for Animal Conservation, College of Life Sciences, Northwest University, Xi'an 710069, China. E-mail: (Li); (R. Pan); (H. Zhang); (H. Wang); (Zou); Zhang); (H. Pan); (J. Wang); (G. Guo); (Hou); (Huang); (S. Guo); (He); (P. Zhang).

Article Synopsis
  • Understanding how climate, ecology, and human activities have impacted animal development is key for effective conservation strategies, with macaques in China serving as a useful model for research.
  • The study reconstructs the geographic distribution of macaques across various time periods (the last inter-glaciation, the Last Glacial Maximum, and the present) to predict their habitats in the 2050s, revealing a significant reduction in suitable environments over time.
  • As a result, the research highlights that over 94% of these potential habitats are not included in China's Protected Areas, emphasizing the urgent need to focus conservation efforts in mountainous regions of Southwest China where macaques are expected to migrate.
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Bioinformatics-Facilitated Identification of Novel Bacterial Sulfoglycosidases That Hydrolyze 6-Sulfo--acetylglucosamine.

ACS Bio Med Chem Au

December 2024

Manchester Institute of Biotechnology, University of Manchester, 131 Princess Street, Manchester M1 7DN, United Kingdom.

Glycan sulfation is a widespread postglycosylation modification crucial for modulating biological functions including cellular adhesion, signaling, and bacterial colonization. 6-Sulfo-β-GlcNAcases are a class of enzyme that alters sulfation patterns. Such changes in sulfation patterns are linked to diseases such as bowel inflammation, colitis, and cancer.

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Indobufen-based dual antiplatelet therapy in patients with multivessel coronary disease undergoing drug-eluting stent implantation insight from the OPTION trial.

Am Heart J

December 2024

Department of Cardiology, Zhongshan Hospital, Shanghai Institute of Cardiovascular Diseases, National Clinical Research Center for Interventional Medicine, Fudan University, Shanghai, China; Department of Cardiology, Shanghai Geriatric Medical Center, Shanghai, China. Electronic address:

Background: It remains unclear whether indobufen-based dual antiplatelet therapy (DAPT) preserves ischemic protection while limiting bleeding risk in patients with multivessel coronary disease (MVD). This study aimed to investigate the efficacy and safety of indobufen-based DAPT in patients with MVD.

Methods: Patients in the OPTION trial were stratified based on the presence of MVD.

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The genus Fraxinus L. (Oleaceae): A review of botany, traditional and modern applications, phytochemistry, and bioactivity.

Phytochemistry

April 2025

College of Food Science and Technology, Northwest University, 229 Taibai North Road, Xi'an, Shaanxi, 710069, China. Electronic address:

Fraxinus L., a member of the Oleaceae family with approximately 60 species worldwide, is widely distributed in the warm temperate zone of the northern hemisphere. It is not only used as a folk medicine for treating various illnesses but is also documented in medical books.

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SP1/COL1A2/ZEB1 axis promotes TGF-β2-induced lens epithelial cell proliferation, migration, invasion and EMT process.

Exp Eye Res

December 2024

Department of Ophthalmology, Shaanxi Eye Hospital, Xi'an People's Hospital (Xi'an Fourth Hospital), Affiliated People's Hospital of Northwest University, Xi'an 710004, China. Electronic address:

Posterior capsule opacification (PCO) is the most common complication after cataract surgery. In this study, we used transforming growth factor beta-2 (TGF-β2)-induced SRA01/04 cells to mimic PCO cell model and explored the functions and underlying mechanisms of specific protein 1 (SP1) in TGF-β2-induced SRA01/04 cell development. MTT assay and EdU assay were carried out to explore the proliferation of SRA01/04 cells.

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Background: Cervical cancer (CC) is one of the most deadly cancers in women, its current treatments still result in poor outcomes and developing the novel targets and therapeutic strategies are urgently needed. Qiu's Cervical Prescription (QCP) is one of the traditional Chinese medicines used in the treatment of cervical cancer in China. Although its curative effect is remarkable, the internal mechanism of its treatment is still poorly understood.

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Butylcholinesterase (BChE) is a key enzyme in living system, closely related to liver and neurological diseases. It is very challenge to develop near-infrared (NIR) fluorescence probe methods for highly selective and sensitive detection of BChE in vivo. Based on the differences in active sites and spatial pockets between acetylcholinesterase (AChE) and BChE, a new NIR BChE-responsive fluorescence probe Probe-BChE (λ/λ = 600 nm/676 nm) was designed and synthesized by introducing dimethyl carbamate group as recognizing moiety to a NIR fluorophore hemicyanine skeleton.

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Deep learning-based intratumoral and peritumoral features for differentiating ocular adnexal lymphoma and idiopathic orbital inflammation.

Eur Radiol

December 2024

Xi'an Key Lab of Radiomics and Intelligent Perception, School of Information Science and Technology, Northwest University, Xi'an, China.

Objectives: To evaluate the value of deep-learning-based intratumoral and peritumoral features for differentiating ocular adnexal lymphoma (OAL) and idiopathic orbital inflammation (IOI).

Methods: Nighty-seven patients with histopathologically confirmed OAL (n = 43) and IOI (n = 54) were randomly divided into training (n = 79) and test (n = 18) groups. DL-based intratumoral and peritumoral features were extracted to characterize the differences in heterogeneity and tissue invasion between different lesions, respectively.

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