Publications by authors named "Wu Chunhua"

Mammalian sterile20-like kinase 1 (MST1), a serine/threonine kinase frequently expressed, has emerged as pivotal modulator of multiple physiological and pathological conditions such as cellular growth, programmed cell death, oxidative stress, neurodegeneration, inflammation, and synaptic plasticity in the central nervous system. Various neurological diseases are associated with the activation of MST1. Epilepsy is a severe neurological disorder characterized by abrupt abnormal electrical activity in the brain and recurring spontaneous seizures.

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Background: Since the emergence of COVID-19, China has taken strict prevention and control measures against the disease. At the end of 2022, when the government optimized and relaxed the COVID-19 prevention and control policy, a new wave of the epidemic appeared. This paper reports an outbreak of COVID-19 among inpatients in a psychiatric hospital in Wenzhou, China.

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In order to obtain an eco-friendly and multifunctional preservative film, dehydroabietic acid (DHA) modified chitosan (CS) containing wintergreen essential oil (CSDA-WEO) film was developed. CS grafted by DHA was able to increase the deformation capacity of CS film (MCS) by about 12.5 %, and the film made by CSDA containing WEO increased the tensile deformation capacity to 32 %.

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To improve the gelling properties of konjac glucomannan/curdlan (KGM/CUD) composite hydrogels, KGM/CUD composite hydrogels were treated by freeze-thawing. Herein, we focus on the effects of freeze-thaw cycles, freezing temperature, and freezing time on the structural and mechanical properties of KGM/CUD composite hydrogels. SEM and SAXS results showed that ice crystals generated by freezing extruded the molecular chains and increased the cross-linking density between molecular chains, which resulted in a denser gel microstructure.

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  • Neonicotinoid insecticides (NNIs) may disrupt hormone functions and negatively impact birth outcomes, but research on their effects during pregnancy is limited.
  • This study focused on 860 mother-child pairs to evaluate how prenatal exposure to NNIs affects neonatal size and hormone levels, using urine and cord serum samples.
  • Results indicated that higher levels of specific NNI metabolites were linked to reduced neonatal head circumference, with some thyroid and sex hormones showing mediating effects in this relationship.
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  • Environmental exposure to pesticides is common, especially among pregnant women, and this study explores its potential impact on TMAO, a compound linked to heart and metabolic diseases.
  • Researchers examined over 1,000 pregnant women in a rural area using statistical models to identify how different pesticides and their mixtures affect urinary levels of TMA and TMAO.
  • They found that certain pesticides, particularly carbofuran phenol, pentachlorophenol, and 2-phenylphenol, were associated with increased levels of TMAO, indicating that pesticide mixtures can significantly alter these metabolites in the body.
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  • The study investigates how different furrow-ridge ratios and mulching modes affect soil respiration, hydrothermal factors, and organic carbon mineralization in a potato field located in southern Ningxia.
  • Three furrow-ridge ratios (R1, R2, R3) and three mulching modes (plastic film, straw, degradable plastic) were tested to determine their impact on soil water retention and temperature throughout the potato growth cycle.
  • Results showed that certain combinations, particularly R3 with straw (R3DJ) and R2 furrows, significantly improved soil water storage and respiration rates compared to a control group, highlighting the potential ecological benefits of these practices.
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  • Pesticide exposure during childhood can affect neurodevelopment, with varying impacts as children grow.
  • The study aimed to track pesticide exposure patterns in children from ages 1 to 10 and link these patterns to behavioral issues at age 10.
  • Results revealed three exposure trajectories; children with higher early exposure had increased hyperactivity and inattention issues compared to those with consistently low or fluctuating exposure levels.
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  • Prenatal exposure to per- and polyfluoroalkyl substances (PFAS) may contribute to increased obesity in children, particularly more so in girls according to a study involving 464 mother-child pairs.
  • The research utilized multiple methods, including linear regression and metabolomics analysis, to explore how PFAS affects obesity-related measures in 10-year-olds and identify biological pathways involved.
  • Results indicated a significant link between higher levels of PFAS exposure during pregnancy and obesity markers, with PFNA being the most influential compound and several amino acid metabolic pathways implicated in this association.
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  • PFAS (per- and polyfluoroalkyl substances) are emerging environmental contaminants linked to negative impacts on children's neurodevelopment, particularly through their effect on BDNF (Brain-derived neurotrophic factor), a key protein for brain development.* -
  • A study involving 1,189 mother-infant pairs measured 12 PFAS and BDNF levels in cord serum, using various statistical models to investigate the associations, particularly noting potential sex differences in the results.* -
  • The findings revealed that certain PFAS compounds (PFNA, PFOS, PFDA, PFUnDA) were negatively associated with BDNF levels in female infants, suggesting that exposure to these chemicals may hinder neurodevelopment, though causal
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In this study, a series of novel nanofibers based on gelatin (GA) loading with purple potato anthocyanin (PPA) and syringic acid (SA) were obtained by electrospinning technology. The effects of SA on mechanical properties, thermal stability, antioxidant capacity, and antimicrobial activity of the GA/PPA nanofibers were systematically characterized. The scanning electron microscopy observation results revealed a smooth surface on the nanofibers.

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Background: Environmental phenols were recognized as endocrine disrupting chemicals (EDCs). However, their impact on childhood anthropometric measures and blood pressure (BP) is still inconclusive. Limited studies have simultaneously considered prenatal and childhood exposures in analyzing mixtures of phenols.

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To better enhance printing effects meanwhile casting functionality, antioxidation and absorption of bioactive component in printed Ca-nano starch (NS)-lutein (L)-surimi were investigated. Results shown that Ca-NS-L promoted surimi printability due to enhanced gel strength and denser structure. Mixing Ca-NS-L endowed printed surimi with antioxidation (DPPH, ABTS, hydroxyl radical, Fe reduction were 42 %, 79 %, 65 %, 0.

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Functional compounds (FCs) had some functions, which are affected easily by digestion and transmembrane transport leading to low absorption rates, such as lutein, quercetin, xylo-oligosaccharide. Protein from blue foods is a potential bioactive compound, which had higher bioavailability, especially for bioactive peptides (BBPs). The BBPs has great limitations, especially the variability under pepsin digestion.

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The purpose of this study was to evaluate the preservation effects of konjac glucomannan (KGM)/oregano essential oil (OEO) Pickering emulsion-based pads (K/OPE pads) on large yellow croaker (Pseudosciaena crocea) fillets stored at 4 °C. The K/OPE pads were fabricated using a freeze-drying technique. The homogeneous distribution of the OEO Pickering emulsions in the KGM matrix was observed using scanning electron microscopy.

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Methanol is a valuable liquid C product in CO electroreduction (COER); however, it is hard to achieve high selectivity and a large current density simultaneously. In this work, we construct Mn-doped VS multilayer nanowafers applied in a flow cell to yield methanol as a single liquid product to tackle this challenge. Mn doping adjusts the electronic structure of VS and concurrently introduces sulfur vacancies, forming a critical *CO intermediate and facilitating its sequential hydrogenation to methanol.

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Electrocatalytic CO reduction reaction (CORR) to ethanol has been widely researched for potential commercial application. However, it still faces limited selectivity at a large current density. Herein, Mo-doped CuS nanosheet-assembled hollow spheres are constructed to address this issue.

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Background: Prenatal exposure to per- and polyfluoroalkyl substances (PFASs) influences neurodevelopment. Thyroid homeostasis disruption is thought to be a possible underlying mechanism. However, current epidemiological evidence remains inconclusive.

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To develop a highly efficient adsorbent to remediate and remove hexavalent chromium ions (Cr(VI)) from polluted water, cellulose acetate (CA) and chitosan (CS), along with metal oxides (titanium dioxide (TiO) and ferroferric oxide (FeO)), and a zirconium-based metal-organic framework (UiO-66) were used to fabricate the composite porous nanofiber membranes through electrospinning. The adsorption performance, influencing factors, adsorption kinetics and isotherms of composite nanofiber membranes were comprehensively investigated. The multi-layer membrane with interpenetrating nanofibers and surface functional groups enhanced the natural physical adsorption and provided potential chemical sites.

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Unsaturated fatty acids present in fish oil offer various physiological benefits to the human body. However, their susceptibility to oxidation severely limits their potential applications. The purpose of this study was to develop Pickering emulsions stabilized from a composite of resveratrol-loaded gliadin nanoparticles and oxidized chitin nanocrystals (GR/OC) to protect fish oil from oxidation.

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Article Synopsis
  • * This study combines rosin derivative maleopimaric anhydride (MPA) with biodegradable antifungal chitosan (CS), creating a modified compound (CSMA) that shows improved antifungal properties and shelf-life extension for fruits.
  • * CSMA not only performs as well as the chemical preservative Imazalil in preserving small mandarin oranges but also effectively reduces water loss in longan, making it a healthier and more environmentally friendly alternative with potential for longer shelf-life.
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The extensive global use of neonicotinoid insecticides (NNIs) has led to widespread human exposure, necessitating the development of effective methods for large-scale biomonitoring. However, current methods are inadequate in simultaneously and accurately detecting various NNIs or their metabolites (m-NNIs). In this study, we aimed to establish a robust method using solid-phase extraction (SPE)-ultra high performance liquid chromatography tandem Q-Orbitrap high resolution mass spectrometry (UPLC-Q-Orbitrap HRMS) for the simultaneous determination of 12 NNIs and 6 m-NNIs in human urine.

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Background: Polybrominated diphenyl ethers (PBDEs), a series of worldwide applied flame retardants, may influence fetal growth and interfere with thyroid function. The study intended to explore the relationship between in-utero exposure to PBDE mixture and newborn anthropometric indexes and to further examine the potential mediating role of thyroid function.

Methods: Demographics and laboratory measures of 924 mother-infant pairs were obtained from the database of the Sheyang Mini Birth Cohort Study.

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Deep Learning algorithms have achieved state-of-the-art performance in various important tasks. However, recent studies have found that an elaborate perturbation may cause a network to misclassify, which is known as an adversarial attack. Based on current research, it is suggested that adversarial examples cannot be eliminated completely.

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