Publications by authors named "Huiwen Gu"

Article Synopsis
  • Rapid analysis of foodborne bacteria is vital for preventing infections, and this study introduces a self-reporting molecularly imprinted polymer (MIP) and a signaling nanoprobe using metal-organic frameworks to enhance detection.
  • The technology employs a ratiometric electrochemical bioassay to specifically capture Staphylococcus aureus, forming a structure that allows for precise current measurements to quantify the bacteria present.
  • The biosensor is capable of detecting a wide range of bacteria concentrations (10 to 10 CFU/mL) with a low detection limit (1.2 CFU/mL), showcasing its usefulness for analyzing complex food samples.
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People are paying more and more attention to the effects of environmental factors such as heavy metals on depression, and heavy metals may destroy the homeostasis of vitamin D in the body by affecting human metabolism, and the lack of vitamin D will increase the risk of depression. There are few studies on vitamin D deficiency in depression caused by heavy metals, and it is not deep enough. Therefore, this study used logistic regression, restricted cubic spline curve, weighted quantile and Quantile g-computation model to analyze the effects of heavy metal exposure alone and in combination on vitamin D and depression, as well as the potential role of vitamin D deficiency in the process of heavy metal-induced depression.

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In recent years, red wine drinking has become more popular in China owing to its antioxidant effects. However, the key antioxidant compounds and their action mechanisms of Chinese red wines are still unclear. Herein, the antioxidant activities and chemical compositions of 45 Chinese Cabernet Sauvignon red wine samples were determined using chemical antioxidant assays and an UHPLC-QTOF-MS-based untargeted metabolomics method.

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Phthalates and bisphenol A are recognized as the predominant endocrine-disrupting substances (EDCs) in the environment, but their impact on sleep health remains unclear. Vitamin D has often been reported to play a role in sleep health and may be affected by endocrine-disrupting compounds. The study utilized data from 5476 individuals in the NHANES project to investigate the correlation between combined exposure to environmental EDCs and sleep duration through modeling various exposures.

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Enshi Yulu green tea (ESYL) is the most representative traditional steamed green tea in Enshi, Hubei. Different ESYL grades exhibit distinct flavors, tastes, and prices. In this study, a visual sensor based on 4-MPBA Au@AgNPs was developed for the rapid and accurate identification of ESYL grades.

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The duration of storage significantly influences the quality and market value of Qingzhuan tea (QZT). Herein, a high-resolution multiple reaction monitoring (MRM) quantitative method for markers of QZT storage year was developed. Quantitative data alongside multivariate analysis were employed to discriminate and predict the storage year of QZT.

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Herein, we explored the overall association between metal mixtures and lung functions in populations of varying ages and the relationship among the associated components. The 2007-2012 National Health and Nutrition Examination Survey data of 4382 American participants was analyzed, and generalized linear, elastic net, quantile g-computation, and Bayesian kernel machine regression models were used to evaluate the relationship between exposure to the metal mixture and lung function at various ages. The results of barium exposure at distinct stages revealed that children and adolescents exhibited greater lung function changes than those in adults and the elderly.

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Article Synopsis
  • Zinc oxide nanoparticles (ZnO NPs) are linked to increased susceptibility and severity of epilepsy, highlighting their potential negative impact on neurological health.
  • The study utilized behavioral analysis, RNA sequencing, and Western blot methods to explore the role of TLR4 expression and autophagy pathways affected by ZnO NPs.
  • Results indicated that ZnO NPs primarily disrupt the function of inhibitory neurons, leading to an imbalance in excitation and inhibition, which can be partially reversed using a TLR4 inhibitor.
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Wine is a very popular alcoholic drink owing to its health benefits of antioxidant effects. However, profits-driven frauds of wine especially false declarations of variety frequently occurred in markets. In this work, an UHPLC-QTOF-MS-based untargeted metabolomics method was developed for metabolite profiling of 119 bottles of Chinese red wines from four varieties (Cabernet Sauvignon, Merlot, Cabernet Gernischt, and Pinot Noir).

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  • Fluorescence spectroscopy is effective in detecting polycyclic aromatic hydrocarbons (PAHs) due to their natural fluorescence, but challenges arise from overlapping spectra and surfactants in oilfield produced water.
  • A novel approach using third-order calibration on four-dimensional (4D) fluorescence data was proposed to address these issues, particularly focusing on compounds like pyrene, fluorene, phenanthrene, and fluoranthene.
  • This method demonstrated improved accuracy and quantification of PAHs compared to traditional second-order calibration methods, offering a significant advancement for analyzing PAHs in complex water samples containing surfactants.
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  • It's really important to know the right grade of tea to ensure good quality.
  • This study looked at how different tea plants and heights where they grow affect tea grades, finding a way to tell their quality.
  • By using special tests, they discovered that tea from different heights has unique markers, allowing them to accurately identify tea grades more than 85% of the time.
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  • The study investigates how the quality of Qingzhuan tea (QZT) changes with different storage times (0-9 years) using an untargeted metabolomic approach.
  • Principal component analysis grouped QZT samples into two main categories, and 18 chemical markers were identified that indicate how storage time affects tea composition.
  • Key findings show a reduction in catechins and fatty acids, while flavonoid glycosides and certain triterpenoids increased with storage, leading to the development of a predictive model for storage duration based on specific chemical markers.
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The authenticity of honey currently poses challenges to food quality control, thus requiring continuous modernization and improvement of related analytical methodologies. This review provides a comprehensively overview of honey authenticity challenges and related analytical methods. Firstly, direct and indirect methods of honey adulteration were described in detail, commenting the existing challenges in current detection methods and market supervision approaches.

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The presence of the target causes the structural switch of a metastable hairpin template probe (MH) for triggering a self-primed artificial biochemical circuit to produce numerous DNAzyme replicates, which in turn results in substantial signal amplification for highly sensitive colorimetric determination of nucleic acids.

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Petroleum-containing substance (PCS) is a general term used for petroleum and its derivatives. A comprehensive characterization of PCSs is crucial for resource exploitation, economic development and environmental protection. Fluorescence spectroscopy, especially excitation-emission matrix fluorescence (EEMF) spectroscopy, has been proved to be a powerful tool to characterize PCSs since its remarkable sensitivity, selectivity, simplicity and high efficiency.

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Purpose: There were limited studies that have probed into the combined effect of the cortisol/testosterone (C/T) ratio as a biomarker of stress and Pittsburgh Sleep Quality Index (PSQI) on coronary heart disease (CHD). This research aimed to explore the association of C/T ratio and PSQI with the risk of CHD in a rural Chinese population, as well as the interaction and combined effect between C/T ratio and PSQI on CHD.

Methods: A case-control study was performed including 307 individuals without CHD and 307 patients drawn from Henan Rural Cohort.

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Chrysanthemum morifolium Ramat cv. "Hangbaiju" (HBJ), known as one of the "eight flavors of Zhejiang", is commonly used as a classical tea material for both food and medicine over three thousand years in China. The quality of HBJ is closely related to its geographical origins.

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Septic shock has increasingly become a cause of death threatening human survival. Shenfu Injection (SFI), a patented Chinese medicine, has been widely used in the treatment of patients with sepsis and cardiovascular diseases domestically. We sought to examine whether combination therapy with SFI can improve clinical outcomes in critically ill patients undergoing mechanical ventilation (MV).

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In order to prevent the illegal discharge of oilfield wastewater, this work proposed excitation-emission matrix fluorescence (EEMF) spectroscopy coupled with two kinds of chemical pattern recognition methods for tracing the sources of oilfield wastewater. The first pattern recognition method was built from the relative concentrations extracted by alternating trilinear decomposition (ATLD) based on partial least squares-discriminant analysis (PLS-DA) algorithm, and the other one was modeled based on strictly multi-way partial least squares-discriminant analysis (N-PLS-DA). Both methods showed good discrimination abilities for oilfield wastewater samples from three different sources.

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Identifying geographical origins of red wines made in specific regions is of significance since the false claim of geographical origins has been frequently exposed in China's wine industry. In this work, an untargeted metabolomic approach based on UPLC-QTOF-MS was established to discriminate geographical origins of Chinese red wines. The principal component analysis (PCA) showed significant differences between wine samples from three famous geographical origins in China.

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Article Synopsis
  • Researchers synthesized nitrogen doped carbon dots (NCDs) using citric acid and ethylenediamine, achieving a high quantum yield of 67.4% and demonstrated good stability and sensitivity.
  • The NCDs were effective as a fluorescence sensor for mercury (Hg) detection, showing a linear response in fluorescence intensity within the concentration range of 0.3 to 2.0 μM and a detection limit of 0.24 μM.
  • The detection mechanism involves static quenching by Hg, and the method was successfully applied to test Hg levels in beverage samples, indicating its practical use in real-world applications.
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  • A new electrochemical method for detecting bleomycin (BLM) using a modified electrode was developed, involving the activation of a Zn-dependent DNAzyme and a metal-organic framework (MOF).
  • The method utilizes two hairpin DNAs—one for recognizing BLM and the other for amplifying the signal—which work together to release DNA fragments that are measured electrochemically.
  • This technique demonstrated a remarkable sensitivity with a detection limit of 4 pM BLM and an operational ease, making it suitable for applications in biomedical and clinical research.
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  • Researchers analyzed Laoshan green teas harvested in summer and autumn using HPLC-DAD to identify 57 chemical components.
  • They utilized multivariate techniques, specifically PCA, SVM, and PLS-DA, achieving high accuracy rates, with SVM and PLS-DA reaching 100% recognition for certain datasets.
  • The study confirmed that the PLS-DA model based on key components selected using VIP can effectively authenticate the plucking seasons of Laoshan green tea.
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A MOF-based bio-bar code material was synthesized and firstly applied to develop an electrochemical streptomycin (STR) aptasensor. By using MOF-based bio-bar code and enzyme-assisted target recycling for dual-signal amplification, highly sensitive detection of STR was achieved. The sensing surface was simply fabricated by immobilizing a mixed monolayer of thiolated cDNA/aptamer duplexes (dsDNA) and 6-mercapto-1-hexanol (MCH) on the gold nanoparticle modified screen printed carbon electrode (Au/SPCE).

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Article Synopsis
  • The Alternating Trilinear Decomposition (ATLD) method is effective for analyzing excitation-emission matrix fluorescence (EEMF) data from complex samples, even with various background interferences.
  • The study evaluated ATLD's performance on both simulated and real EEMF data sets, comparing individual and global modeling techniques in terms of the accuracy of resolved spectral profiles and quantitative results.
  • Findings showed that ATLD can reliably quantify multiple components across different complex samples without being affected by background interference, enhancing its applicability in fluorescence spectroscopy.
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