Publications by authors named "Qian Chen"

A peptide-based, hypoxia-inducible factor-1 α (HIF-1α) specific PET tracer for tumor hypoxia imaging is reported. It was prepared with a rapid AlF labeling method with high stability. AlF-CLLFVY specifically binds to HIF-1α with high affinity and shows higher uptake in cells under hypoxia.

View Article and Find Full Text PDF

Myocardial infarction (MI) is followed by irreversible damage to the myocardium, which eventually evolves into ventricular remodeling and heart failure. An imbalanced inflammatory response after MI can exacerbate myocardial injury. Current strategies to modulate inflammation and thereby improve myocardial tissue repair are limited.

View Article and Find Full Text PDF

Lung metastases pose a challenge in cancer treatment due to the lung's vascular network and immunosuppressive microenvironment. Conventional subcutaneous vaccines typically fail to elicit localized immune responses at metastatic sites. To address this, an inhalable nanovaccine, BMVax (bacterial membrane-based vaccine), is developed using bacterial membrane vesicles from engineered E.

View Article and Find Full Text PDF

Redox-active colloids (RACs) represent a novel class of energy carriers that exchange electrical energy upon contact. Understanding contact-mediated electron transfer dynamics in RACs offers insights into physical contact events in colloidal suspensions and enables quantification of electrical energy transport in nonconjugated polymers. Redox-based electron transport was directly observed in monolayers of micron-sized RACs containing ethyl-viologen side groups via fluorescence microscopy through an unexpected nonlinear electrofluorochromism that is quantitatively coupled to the redox state of the colloid.

View Article and Find Full Text PDF

BackgroundIndividuals with subjective cognitive decline (SCD) are at high risk of preclinical Alzheimer's disease (AD). While olfactory dysfunction is evident in AD and mild cognitive impairment (MCI), its presence and neural mechanism in SCD remain unclear.ObjectiveThis study examined functional connectivity (FC) alterations across olfactory networks and their mediating role between olfactory and cognitive functions in SCD and MCI.

View Article and Find Full Text PDF

The high prevalence of childhood caries poses a considerable threat to children's overall health. Traditional Chinese medicine (TCM) concepts offers a distinctive and valuable perspective on caries prevention. This study explores TCM's conceptualization of dental caries in relation to the physiological characteristics of children and proposes targeted preventive strategies, including holistic care, dietary regulation, and lifestyle modification.

View Article and Find Full Text PDF

Background: Patients with relapsed/refractory (R/R) mantle cell lymphoma (MCL) face a poor prognosis in the absence of effective treatment options. Ibrutinib plus venetoclax demonstrated high response rates and a tolerable safety profile in the primary analysis of the Phase 2, M20-075 study (NCT04477486) in Japanese patients with R/R MCL. We report updated efficacy and safety from this study with longer follow-up.

View Article and Find Full Text PDF

Efficient energy storage systems are crucial to address the intermittency of renewable energy sources. As multivalent batteries, Zn-ion batteries (ZIBs), while inherently low voltage, offer a promising low-cost alternative to Li-ion batteries due to the viable use of zinc as the anode. However, to maximize the potential impact of ZIBs, rechargeable cathodes with improved Zn diffusion are needed.

View Article and Find Full Text PDF

We previously reported that manganese (Mn) enhances innate immune responses to viral infection by inducing phosphorylation of TANK-binding kinase 1 (TBK1) in an Ataxia-telangiectasia mutated (ATM)-dependent manner. However, the underlying mechanism by which how Mn induces TBK1 phosphorylation remained unclear. Here, we show that Mn dose-dependently induced TBK1 phosphorylation in the presence of ATM across multiple cell lines, as well as in primary human macrophages and T cells.

View Article and Find Full Text PDF

Over the past few decades, tumor immunotherapy has revolutionized the landscape of cancer clinical treatment. There is a flourishing development of combination strategies to improve the anti-tumor efficacy of mono-immunotherapy. However, instead of a straightforward combination of multiple therapeutics, it is more preferable to pursue a synergistic effect by designing rational combinations as well as administration strategies, which are based on a comprehensive understanding of the physiological and pathological features.

View Article and Find Full Text PDF

Aims: To develop and validate a machine learning-based risk prediction model for delirium in older inpatients.

Design: A prospective cohort study.

Methods: A prospective cohort study was conducted.

View Article and Find Full Text PDF

Three-dimensional structured illumination microscopy (3DSIM) is an essential super-resolution imaging technique for visualizing volumetric subcellular structures at the nanoscale, capable of doubling both lateral and axial resolution beyond the diffraction limit. However, high-quality 3DSIM reconstruction is often hindered by uncertainties in experimental parameters, such as optical aberrations and fluorescence density heterogeneity. Here, we present PCA-3DSIM, a novel 3DSIM reconstruction framework that extends principal component analysis (PCA) from two-dimensional (2D) to three-dimensional (3D) super-resolution microscopy.

View Article and Find Full Text PDF

In this study, transcriptomic techniques were used to analyze how 4,5-dihydroxy-2,3-pentanedione (DPD), an exogenous autoinducer-2 (AI-2) precursor, promotes putrescine degradation by Lactiplantibacillus plantarum SH7 through the LuxS/AI-2 quorum sensing (QS) system. The Kyoto Encyclopedia of Genes and Genomes analysis showed that DPD addition up-regulated putrescine-degradation genes and down-regulated putrescine-synthesis genes in L. plantarum SH7, promoting putrescine degradation from both degradation and synthesis aspects.

View Article and Find Full Text PDF

To overcome challenges in fluorescence labelling of RNA inside living cells we have recently introduced a direct approach using the fluorescent nucleobase analogue 2CNqA. Here we demonstrate its potential for use in fluorescence lifetime imaging (FLIM) to investigate nucleoside metabolism and for metabolic RNA labelling.

View Article and Find Full Text PDF

Plant proteins have received increasing attention from food researchers with the growing demand for plant proteins and the emphasis on healthy food and "clean labeling". However, due to their complex and dense structure and greater susceptibility to external factors, plant proteins exhibit poor functional properties, which are not conducive to processing and application in the food industry. Currently, physical modifications of plant proteins have been increasingly reported to improve their functional properties.

View Article and Find Full Text PDF

Cheese, a widely consumed dairy product globally, derives its commercial value primarily from its flavor and textural characteristics that crucially determine consumer acceptance. The quality of cheese including flavor and texture is intricately related to the enzymatic activities of microorganisms during the fermentation process. Among these enzymes, lipases play a pivotal role by hydrolyzing milk fat to generate free fatty acids, which serve as precursors for the formation of key flavor compounds, thereby significantly enhancing the sensory attributes of cheese.

View Article and Find Full Text PDF

In the context of advancing agricultural new quality productive forces, addressing the challenges of uneven illumination, target occlusion, and mixed infections in greenhouse vegetable disease detection becomes crucial for modern precision agriculture. To tackle these challenges, this study proposes YOLO-vegetable, a high-precision detection algorithm based on improved You Only Look Once version 10 (YOLOv10). The framework incorporates three innovative modules.

View Article and Find Full Text PDF

Corrosion is the predominant failure mechanism in marine steel, and accurate corrosion prediction is essential for effective maintenance and protection strategies. However, the limited availability of corrosion datasets poses significant challenges to the accuracy and generalization of prediction models. This study introduces a novel integrated model designed for predicting marine corrosion under small sample sizes.

View Article and Find Full Text PDF

To prolong the service life of asphalt pavement and reduce its maintenance cost, a fiber Bragg grating (FBG) sensor encapsulated in carboxylated carbon nanotube (CNT-COOH)-modified gel material suitable for strain monitoring of asphalt pavement was developed. Through tensile and bending tests, the effects of carboxylated carbon nanotubes on the mechanical properties of gel materials under different dosages were evaluated and the optimal dosage of carbon nanotubes was determined. Infrared spectrometer and scanning electron microscopy were used to compare and analyze the infrared spectra and microstructure of carbon nanotubes before and after carboxyl functionalization and modified gel materials.

View Article and Find Full Text PDF

Phloem-inhabiting unculturable bacterial pathogens are persistently transmitted by insect vectors. However, how they evade insect immune responses to ensure persistent transmission remains unknown. The important melanization immune response in insects is triggered by cleavage of prophenoloxidase (PPO) into active phenoloxidase (PO) via clip-domain serine proteases (CLIPs).

View Article and Find Full Text PDF

BACKGROUND Post-stroke dysphagia (PSD) severely impairs patients' quality of life, yet current diagnostic methods lack efficacy in early detection and prediction. This retrospective study of 300 stroke patients aimed to evaluate risk factors in patients with and without post-stroke dysphagia using functional near-infrared spectroscopy (fNIRS), transcranial magnetic stimulation (TMS), and surface electromyography (sEMG). MATERIAL AND METHODS A total of 300 stroke patients (201 with PSD and 99 without, diagnosed via video fluoroscopic swallowing study or flexible endoscopic evaluation of swallowing) were included.

View Article and Find Full Text PDF

MXenes are renowned for their exceptional chemical and physical properties, making them highly promising for gas sensing applications. However, instability remains a significant limitation for these materials. Compared with mono-transition-metal (MTM) MXenes, double transition-metal (DTM) MXenes theoretically offer higher stability and functional diversity.

View Article and Find Full Text PDF

Biogenic amines (BAs) threaten food safety and quality. Microorganism-derived BA-degrading enzymes, prized for safety and efficiency, enable BA oxidative degradation in fermented foods. Despite extensive research on enzyme characterization and modification, translating these findings to real fermented food systems for BA reduction remains elusive.

View Article and Find Full Text PDF

A PHP Error was encountered

Severity: Warning

Message: A non-numeric value encountered

Filename: controllers/Author.php

Line Number: 220

Backtrace:

File: /var/www/html/application/controllers/Author.php
Line: 220
Function: _error_handler

File: /var/www/html/index.php
Line: 317
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: A non-numeric value encountered

Filename: libraries/Pagination.php

Line Number: 413

Backtrace:

File: /var/www/html/application/controllers/Author.php
Line: 275
Function: create_links

File: /var/www/html/index.php
Line: 317
Function: require_once