Publications by authors named "Cheng-Hai Yan"

To sustainably obtain bioactive substances in functional foods, immune plant hormones can enhance the nutrient content in edible mulberry leaves. Different concentrations of methyl jasmonate and coronatine influenced the bioactive compounds of mulberry leaf powder. Metabolomics analysis identified differences that affected the differential metabolites and related pathways, while molecular docking revealed the key metabolites regulating antidiabetic activity.

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The gut microbiota of the silkworm (Bombyx mori) is essential for metabolic processes, including digestion and immunity. Nonetheless, the role of specific gut fungi in optimizing nutrient recycling influenced by infiltrated biomaterials remains inadequately elucidated. This study investigates the potential mechanisms through which gut fungi affect the dynamics of nutrient absorption in silkworms.

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Enzymatically modified isoquercitrin (EMIQ) is a glyco-chemically modified flavonoid exhibiting notably high biological activity, such as antioxidant, anti-inflammatory and anti-allergic properties. However, the utilization of expensive substrates such as isoquercitrin and cyclodextrin in the conventional approach has hindered the industrial-scale production of EMIQ due to high cost and low yields. Hence, the development of a cost-effective and efficient method is crucial for the biological synthesis of EMIQ.

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For texture control in plant-meat alternatives, the interrelationship between apparent characteristics and chemical bonds in high-fiber formulations remains unclear. The influence of mulberry leaf powder on apparent characteristics and chemical bonds of raw materials, block and strip products at addition amounts of 0.5-25% was analyzed.

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The biofilm of an engineered strain is limited by slow growth and low yield, resulting in an unsatisfactory ability to resist external stress and promote catalytic efficiency. Here, biofilms used as robust living catalysts were manipulated through dual functionalized gene regulation and carrier modification strategies. The results showed that gene overexpression regulates the autoinducer-2 activity, extracellular polymeric substance content and colony behavior of Escherichia coli, and the biofilm yield of csgD overexpressed strains increased by 79.

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Background: With the requirements of environmental, cost and economic sustainability, new sources of alternative proteins in the livestock industry are receiving increasing attention. Mulberry (Morus alba L.) leaves are a unique feed resource because of their high protein content and large availability.

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The high cell density, immobilization and stability of biofilms are ideal characteristics for bacteria in resisting antibiotic therapy. CsgD is a transcription activating factor that regulates the synthesis of curly fimbriae and cellulose in , thereby enhancing bacterial adhesion and promoting biofilm formation. To investigate the role of CsgD in biofilm formation and stress resistance in bacteria, the D deletion mutant ΔD was successfully constructed from the engineered strain BL21(DE3) using the CRISPR/Cas9 gene-editing system.

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Objectives: To assess the association of ectopic fat deposition in the liver and pancreas quantified by Dixon magnetic resonance imaging (MRI) with insulin sensitivity and β-cell function in patients with central obesity.

Materials And Methods: A cross-sectional study of 143 patients with central obesity with normal glucose tolerance (NGT), prediabetes (PreD), and untreated type 2 diabetes mellitus (T2DM) was conducted between December 2019 and March 2022. All participants underwent routine medical history taking, anthropometric measurements, and laboratory tests, including a standard glucose tolerance test to quantify insulin sensitivity and β-cell function.

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Background: The antioxidant properties of active peptides from silkworm pupae protein hydrolysate are of interest, and it serves as a novel source of calcium supplement.

Methods: Optimize the preparation parameters of silkworm pupae bioactive peptide-calcium chelate, and investigate the mechanism and bioavailability of silkworm pupae active peptide as a transport carrier to promote calcium ion absorption using simulated gastrointestinal digestion and Caco-2 monolayer cell model.

Results: The optimal process parameters for preparing peptide calcium chelate were the peptide calcium mass ratio of 3:1, pH of 6.

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Article Synopsis
  • * Researchers developed a more efficient method to produce high-purity CG by converting cyanidin-3-O-rutinoside using a whole-cell catalyst that contained α-rhamnosidase, enhanced by an aqueous two-phase system.
  • * The method achieved a significant increase in CG yield (from 47.11% to 66.56%) and maintained enzyme activity over multiple uses, resulting in CG purity of 99% after purification with semi-preparative HPLC, showcasing a new biomanufacturing strategy.
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Boron is an essential element for autoinducer-2 (AI-2) synthesis of quorum sensing (QS) system, which affects bacterial collective behavior. As a living biocatalyst, biofilms can stably catalyze the activity of intracellular enzymes. However, it is unclear how boron affects biofilm formation in E.

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Article Synopsis
  • Acute pancreatitis is a rare complication of gastrointestinal endoscopy, especially in patients without common risk factors like alcoholism or gallstones.!
  • A 56-year-old woman experienced severe abdominal pain immediately after an upper endoscopy and was diagnosed with acute pancreatitis, leading to a specific treatment regimen.!
  • The case emphasizes the need to consider pancreatitis as a potential diagnosis when patients report abdominal pain after undergoing gastrointestinal procedures.
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Background: Ubiquilins (UBQLNs) are important factors for cell proteostasis maintenance. UBQLNs are involved in the modulation of the cell cycle, as well as in apoptosis, membrane receptors regulation, DNA repair, epithelial-mesenchymal transition, and miRNA activities. They also affect the selection of double-strand break repair pathways.

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Correction for 'Nutritional targeting modification of silkworm pupae oil catalyzed by a smart hydrogel immobilized lipase' by Jin-Zheng Wang , , 2021, , 6240-6253, DOI: 10.1039/D1FO00913C.

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To prepare a nutritional supplement using silkworm pupae oil (SPO) as a feedstock, a microfluidic reactor with a smart hydrogel immobilized lipase was first constructed to reduce the relative content of palmitic acid at sn-1,3 and improve the nutritional function. The effects of flow rate, reaction temperature, and substrate molar ratio were investigated. In vitro digestion and pH-stat models were employed to analyze the digestion feature after the modification of SPO, while HPLC-ELSD, zeta potential, DSC, and TGA were used to evaluate the nutritional function.

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α-Linolenic acid (ALA) is recognised to have a regulatory effect on cardiovascular diseases. Due to the low bioavailability of linseed oil (LINO), which is the most common ALA supplement, it is necessary to find a replacement for ALA supplements that is more easily accepted by the human body. The content of ALA in silkworm pupae oil (SPO) is 32.

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Developing a novel agent and understanding the interaction model between multipolymer nanoparticles and bacteria could be worthwhile to induce the protection of crops with the prevalence of frequent hazards because of the use of pesticides and chemical resistance. Unlike metal nanoparticles, multipolymer nanoparticles have bacteriostatic properties against that can trigger bacterial wilt by infecting the plant. Therefore, a novel poly(lactic--glycolic acid) nanoparticle containing caffeic acid phenethyl ester (CAPE) and methyl caffeate (MC) was prepared with the sustained-release property (for 10 d at pH 6.

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Increasing nitrogenous contaminants have caused immense challenges to the environment and human health. As compared to physical and chemical methods, biological denitrification is considered to be an effective solution due to its environmental friendliness, high efficiency, and low cost. In the present work, a novel fungal strain identified as Fusarium solani (RADF-77) was isolated from cellulose material-supported denitrification reactor; this strain is capable of removing nitrogen under aerobic conditions.

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Background: Xiaotong Tiegao (XTT) is an ancient topical Tibetan medicine plaster which is widely used in China. Irritant contact dermatitis (ICD) caused by XTT is very common. It is still unclear why some people are more prone to develop ICD.

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Homeobox transcription factors belong to a superfamily that has been widely studied in plant growth and development, but little is known regarding their role in fruit development and ripening. Using a genome-wide expression analysis of homeobox (HB) genes and quantitative real-time PCR, a HD-ZIP II member, PpHB.G7, which presented higher levels of expression in ripening fruits than in developing fruits in all of the tested cultivars, was isolated from peach.

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Article Synopsis
  • The study identifies two key periods of fruit swelling in peaches, with the first swelling ending around 65 days after flower blooming and the second starting at about 75 days.
  • Researchers conducted RNA-sequencing to analyze gene expression during these swelling periods, uncovering 110 and 128 differentially expressed genes associated with the initial and second swellings, respectively.
  • The findings suggest a cooperative regulation of swelling velocity and duration that determines final fruit size, along with a proposed gene regulation network particularly involving genes that affect cell size and expansion.
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Background: Pneumatic injections of non-cross-linked hyaluronic acid are effective in skin rejuvenation, however, the associated biophysical parameters and appearance have not been evaluated.

Objectives: To determine the changes in skin biophysical parameters after facial pneumatic injections of non-cross-linked hyaluronic acid.

Patients And Methods: Twenty-eight healthy female volunteers received pneumatic injections of non-cross-linked hyaluronic acid into the face for consecutive 5 weeks.

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Ethylene response factor (ERF) has been widely studied in regulating fruit ripening in tomato, apple, banana and kiwifruit, but little is known in pear. In this study 1-methylcyclopropene (1-MCP) treatment, an inhibitor of ethylene perception, was conducted at approximately 30 days before harvest to delay fruit ripening in a climacteric white pear cultivar Yali. Transcriptome libraries were constructed and sequenced in pre-ripening, ripening, and 1-MCP treated fruits.

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Article Synopsis
  • A study in Beijing surveyed 529 clothing employees to examine the prevalence of occupational allergic contact dermatitis (OACD) and identify allergens in the Chinese clothing industry.
  • The 1-year prevalence of OACD was found to be 8.5%, with workers (10.8%) at significantly higher risk than managers (3.2%).
  • Major allergens identified included nickel sulfate and cobalt dichloride for workers, while managers were affected by colophony and -tert-butylphenol formaldehyde resin, highlighting a need for better skin protection and awareness.
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Article Synopsis
  • A study was conducted to examine the prevalence and risk factors of contact dermatitis among clothing manufacturing workers in Beijing, revealing a 28.5% prevalence among 529 employees.* -
  • The highest rates of contact dermatitis were found among ironing workers (50%) and sewers (31.7%), while managers had a significantly lower rate (12.7%).* -
  • Key risk factors identified included exposure to materials like leather and feather, as well as conditions such as dry skin, allergic rhinitis, age, and smoking.*
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