177,819 results match your criteria: "Chinese Academy of Medical Sciences & Peking Union Medical College[Affiliation]"

A Coordination Nanosystem Enables Endogenous Ferric Ion-Initiated Multi-Catalysis for Synergistic Tumor-Specific Ferroptosis and Gene Therapy.

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January 2025

State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China.

Emerging evidence demonstrates that inducing ferroptosis, a nonapoptotic programmed cell death mode, holds significant potential for tumor treatment. However, current ferroptosis strategies utilizing exogenous Fenton-type heavy metal species or introducing glutathione (GSH)/glutathione peroxidase 4 (GPX4) suppressants are hampered by latent adverse effects toward organisms, while utilizing endogenous iron may cause undesirable tumor angiogenesis through specific signaling pathways. Here, a ferric ion (Fe)-responsive and DNAzyme-delivered coordination nanosystem (ZDD) is developed to achieve a novel scheme of synergistic tumor-specific ferroptosis and gene therapy, which modulates and harnesses the endogenous iron in tumors for inducing ferroptosis while intercepting tumor angiogenesis to enhance therapeutic efficacy.

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Background And Objectives: Currently, there remains a paucity of research on the deformation and valve function of transcatheter heart valves (THV) in patients with aortic regurgitation (AR) following transcatheter aortic valve replacement (TAVR). This study aimed to thoroughly explore the correlation between THV deformation and postoperative hemodynamics in these patients.

Methods: In this study, we assessed 39 AR patients treated with the J-Valve THV system during TAVR.

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PerC B-Cells Activation via Thermogenetics-Based CXCL12 Generator for Intraperitoneal Immunity Against Metastatic Disseminated Tumor Cells.

Adv Mater

January 2025

Molecular Science and Biomedicine Laboratory (MBL), State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Environmental Science and Engineering, College of Biology, Aptamer Engineering Center of Hunan Province, Hunan University, Changsha, 410082, China.

During cancer peritoneal metastasis (PM), conventional antigen-presenting cells (dendritic cells, macrophages) promote tumorigenesis and immunosuppression in peritoneal cavity. While intraperitoneal immunotherapy (IPIT) has been used in clinical investigations to relieve PM, the limited knowledge of peritoneal immunocytes has hindered the development of therapeutic IPIT. Here, a dendritic cell-independent, next-generation IPIT is described that activates peritoneal cavity B (PerC B) cell subsets for intraperitoneal anti-tumor immunity via exogenous antigen presentation.

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Wide dynamic range compression (WDRC) and noise reduction both play important roles in hearing aids. WDRC provides level-dependent amplification so that the level of sound produced by the hearing aid falls between the hearing threshold and the highest comfortable level of the listener, while noise reduction reduces ambient noise with the goal of improving intelligibility and listening comfort and reducing effort. In most current hearing aids, noise reduction and WDRC are implemented sequentially, but this may lead to distortion of the amplitude modulation patterns of both the speech and the noise.

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Utilizing 4-Sulfonylcalix[4]arene as a Selective Mobile Phase Additive for the Capture of Methylated Peptides.

Anal Chem

January 2025

Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Meilong Road, Shanghai 200237, P. R. China.

Protein methylation has attracted increasing attention due to its significant regulatory roles in various biological processes. However, the diversity of methylation forms, subtle differences between methylated and nonmodified sites, and their ultralow abundances pose substantial challenges for capturing and isolating methylated peptides from biological samples. Herein, we develop a chromatographic method that utilizes 4-sulfonylcalix[4]arene (SC4A) as a mobile phase additive and Click-Maltose as the stationary phase to separate methylated/nonmethylated peptides through the adsorption of the SC4A-(Me3) complex.

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The integration of hydrogen-bonded organic frameworks (HOFs) with flexible electronic technologies offers a promising strategy for monitoring detailed health information, owing to their inherent porosity, excellent biocompatibility, and tunable catalytic capabilities. However, their application in wearable and real-time health monitoring remains largely unexplored, primarily due to the mechanical mismatch between the traditionally fragile HOFs particles and the softness of human skin. Herein, this study demonstrates an epidermal biosensor that maintains reliable sensing capability even under extreme deformation and complex environmental conditions by integrating HOFs films with wavy bioelectrodes.

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Background: The comparative diagnostic performance of Gallium (Ga)-PSMA-11 PET/CT and Ga-PSMA-11 PET/MRI in detecting bone metastases in prostate cancer (PCa) remains unclear.

Purpose: To systematically evaluate the early detection rate of biochemical recurrent (BCR) bone metastasis in PCa utilizing Ga-PSMA-11 PET/CT and Ga-PSMA-11 PET/MRI.

Material And Methods: We searched PubMed, Embase, and Web of Science for relevant articles up to April 2023 and extracted studies that examined the positivity rate of both Ga-PSMA-11 PET/CT and Ga-PSMA-11 PET/MRI in the context of the BCR bone metastasis of PCa patients.

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Unlocking the Therapeutic Potential of Natural Products for Alzheimer's Disease.

J Med Chem

January 2025

Tianjian Laboratory of Advanced Biomedical Sciences, Institute of Advanced Biomedical Sciences, Zhengzhou University, Zhengzhou 450000, China.

Alzheimer's disease (AD) is a progressive neurodegenerative condition marked by memory loss and cognitive decline. With current treatments offering limited effectiveness, researchers are turning to natural products that can target various aspects of AD pathology. Clinically approved natural products, such as galantamine and huperzine A, have shown success in AD treatments.

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Unlabelled: The present study utilized advanced psychometric methods (i.e., Rasch analysis and confirmatory factor analysis [CFA]) to evaluate the factor structure of the Multiple Intelligence Scale (MIS) and its validity among Taiwanese older adults.

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Background: Qi pi pill (QPP), which contains Renshen, Baizhu, Fuling, Gancao, Chenpi, Shanyao, Lianzi, Shanzha, Liushenqu, Maiya, and Zexie, was recommended for preventing and treating COVID-19 in Shandong Province (China). However, the mechanism by which QPP treats infectious diseases remains unclear. This study aims to investigate the therapeutic effect of QPP in vitro and on acute influenza infection in mice, exploring its mechanism of action against influenza A virus (IAV).

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The Interaction Between Vasculogenic Mimicry and the Immune System: Mechanistic Insights and Dual Exploration in Cancer Therapy.

Cell Prolif

January 2025

Department of Nursing, Sichuan Clinical Research Center for Cancer, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, University of Electronic Science and Technology of China, Chengdu, China.

Vasculogenic mimicry (VM) represents a novel form of angiogenesis discovered in numerous malignant tumours in recent years. Unlike traditional angiogenesis, VM facilitates tumour blood supply independently of endothelial cells by enabling tumour cells to form functional vascular networks. This phenomenon, where tumour cells replace endothelial cells to form tubular structures, plays a pivotal role in tumour growth and metastasis.

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Background: Bone-invasive Pituitary Neuroendocrine Tumors (BI PitNETs) epitomize an aggressive subtype of pituitary tumors characterized by bone invasion, culminating in extensive skull base bone destruction and fragmentation. This infiltration poses a significant surgical risk due to potential damage to vital nerves and arteries. However, the mechanisms underlying bone invasion caused by PitNETs remain elusive, and effective interventions for PitNET-induced bone invasion are lacking in clinical practice.

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Background: Immunotherapy is a significant risk factor for severe COVID-19 in multiple myeloma (MM) patients. Understanding how immunotherapies lead to severe COVID-19 is crucial for improving patient outcomes.

Methods: Human protein microarrays were used to examine the expression of 440 protein molecules in MM patients treated with bispecific T-cell engagers (BiTe) (n = 9), anti-CD38 monoclonal antibodies (mAbs) (n = 10), and proteasome inhibitor (PI)-based regimens (n = 10).

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Background: Multiple meta-analyses (MAs) have demonstrated that six pharmacotherapies, including orlistat, liraglutide, phentermine/topiramate, naltrexone/bupropion, semaglutide, and tirzepatide, improve weight loss and weight maintenance. However, few studies have synthesized and evaluated the quality of this evidence.

Objective: To identify the relevant MAs of randomized clinical trials (RCTs) that explored the association between the six pharmacotherapies and obesity-related health outcomes and adverse events (AEs).

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The difference of oropharyngeal microbiome during acute respiratory viral infections in infants and children.

Commun Biol

January 2025

School of Population Medicine and Public Health, Public Health Emergency Management Innovation Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.

Acute respiratory infections (ARI) with multiple types of viruses are common in infants and children. This study was conducted to assess the difference of oropharyngeal microbiome during acute respiratory viral infection using whole-genome shotgun metagenomic sequencing. The overall taxonomic alpha diversity did not differ by the types of infected virus.

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In bioneuronal systems, the synergistic interaction between mechanosensitive piezo channels and neuronal synapses can convert and transmit pressure signals into complex temporal plastic pulses with excitatory and inhibitory features. However, existing artificial tactile neuromorphic systems struggle to replicate the elaborate temporal plasticity observed between excitatory and inhibitory features in biological systems, which is critical for the biomimetic processing and memorizing of tactile information. Here we demonstrate a mechano-gated iontronic piezomemristor with programmable temporal-tactile plasticity.

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Rescue RM/CS-AKI by blocking strategy with one-dose anti-myoglobin RabMAb.

Nat Commun

January 2025

School of Disaster and Emergency Medicine, Faculty of Medicine, Tianjin University, No. 92 Weijin Road, Nankai District, Tianjin, 300072, China.

Rhabdomyolysis or Crush syndrome-related AKI (RM/CS-AKI) has high mortality, and there is no effective early on-site treatment method. The critical pathogenic factor of RM/CS-AKI is the excessive free myoglobin (Mb) in blood circulation. Here, based on the concept of creating a "mobile barrier", we develop an anti-Mb rabbit monoclonal antibody (RabMAb) with high specificity, affinity, stability, and broad species reactivity.

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Standard operating procedure combined with comprehensive quality control system for multiple LC-MS platforms urinary proteomics.

Nat Commun

January 2025

School of Biological Science and Medical Engineering & School of Engineering Medicine, Beihang University, Beijing, China.

Urinary proteomics is emerging as a potent tool for detecting sensitive and non-invasive biomarkers. At present, the comparability of urinary proteomics data across diverse liquid chromatography-mass spectrometry (LC-MS) platforms remains an area that requires investigation. In this study, we conduct a comprehensive evaluation of urinary proteome across multiple LC-MS platforms.

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Chromosome-level genome assembly and annotation of the gynogenetic large-scale loach (Paramisgurnus dabryanus).

Sci Data

January 2025

Key Laboratory of Breeding Biotechnology and Sustainable Aquaculture (CAS), Hubei Hongshan Laboratory, Key Laboratory of Aquaculture Disease Control, Ministry of Agriculture and Rural Affairs, The Innovation Academy of Seed Design, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China.

The large-scale loach (Paramisgurnus dabryanus; Cypriniformes: Cobitidae) is primarily distributed in East Asia. It is an important economic fish species characterized by fast growth, temperature-dependent sex determination and the ability to breathe air. Currently, molecular mechanism studies related to some aspects such as sex determination, toxicology, feed nutrition, growth and genetic evolution have been conducted.

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[Application of ambulatory surgery management mode in total laparoscopic ileostomy reversal surgery].

Zhonghua Yi Xue Za Zhi

February 2025

Department of Gastrointestinal Oncology Surgery, National Cancer Regional Medical Center, Cancer Hospital Chinese Academy of Medical Sciences Liaoning Hospital, the First Hospital of China Medical University, Shenyang 110001, China Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China.

To explore the safety of application of ambulatory surgery management mode in total laparoscopic ileostomy reversal surgery. A retrospective analysis of clinical data was conducted on patients who had undergone total laparoscopic ileostomy reversal surgery at the First Affiliated Hospital of China Medical University from May 1, 2023, to March 31, 2024. A total of 34 patients were included in the study, comprising 22 males and 12 females, with the age of (60.

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[Analysis of outcomes in adult deceased donor dual kidney transplantation].

Zhonghua Yi Xue Za Zhi

February 2025

Department of Organ Transplantation, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology; Institute of Organ Transplantation, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology; Key Laboratory of Organ Transplantation, Ministry of Education; NHC Key Laboratory of Organ Transplantation; Key Laboratory of Organ Transplantation, Chinese Academy of Medical Sciences, Wuhan 510030, China.

To investigate the efficacy of dual kidney transplantation (DKT) from adult donors. Clinical data of adult DKT donors and recipients in the Institute of Organ Transplantation, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology from March 2015 to June 2024 were retrospectively analyzed. The patients were followed up until September 2024.

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[A comparative study on the diagnostic value of F-PSMA PET/CT PRIMARY score and PSMA expression score for clinically significant prostate cancer].

Zhonghua Yi Xue Za Zhi

January 2025

Department of Urology, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing100730, China.

To compare the diagnostic value of fluorine 18-labelled prostate-specific membrane antigen (PSMA) PET/CT PRIMARY score and PSMA expression score for clinically significant prostate cancer (csPCa). The data of 70 patients with prostate cancer who underwent radical prostatectomy at Beijing Hospital from February 1, 2019 to February 29, 2024 were retrospectively analyzed. All patients underwent whole body F-PSMA PET/CT examination before surgery and pathological large sections of prostate specimens were made after surgery.

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To establish and validate a nomogram based on clinical characteristics and metabolic parameters derived from F-fluorodeoxyglucose positron emission tomography and computed tomography (F-FDG PET/CT) for prediction of high-grade patterns (HGP) in invasive lung adenocarcinoma. The clinical and PET/CT image data of 311 patients who were confirmed invasive lung adenocarcinoma and underwent pre-treatment F-FDG PET/CT scan in Beijing Hospital between October 2017 and March 2022 were retrospectively collected. The enrolled patients were divided into HGP group (196 patients) and non-HGP group (115 patients) according to the presence and absence of HGP.

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The polysaccharide chitosan possesses broad-spectrum antimicrobial properties and has proven effective in controlling various postharvest diseases in fruits. Nevertheless, the fundamental mechanisms underlying its action remain unclear. In this study, the antifungal effects of chitosan with different molecular weights against Fusarium avenaceum, a pathogen causing root rot in Angelica sinensis, were evaluated.

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