Publications by authors named "Zhonghua Liu"

The fungal cell wall provides the cell with enough strength to withstand turgor pressure and keeps adequate plasticity to extend the cell wall size under turgor pressure for cell growth. The cell walls of apical growing hyphae and budding growth yeast have been studied in detailed which share common components of chitin and β-1,3-glucan in their scaffold structures while other polysaccharide components vary on species. In contrast, the cell walls of elongating growth mushroom stipe remains poorly studied.

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Indoleamine 2,3-dioxygenase 1 (IDO1) is a heme-containing enzyme considered as a potential therapeutic target for neurodegenerative diseases and cancer. However, the further development of traditional IDO1 inhibitors has been hindered by their limited clinical efficacy. Recently, type IV apo-IDO1 inhibitors offer a new strategy for developing IDO1 inhibitors due to their highly selective and durable inhibition.

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Ultrasound imaging is widely used in early pregnancy to screen for fetal brain anomalies. However, the accuracy of diagnosis can be influenced by various factors, including the sonographer's experience and environmental conditions. To address these limitations, advanced methods are needed to enhance the efficiency and reliability of fetal anomaly screening.

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This study used a targeted metabolomics approach to examine changes in metabolites within green tea infusions fermented by (TFG) and evaluate the in vitro antioxidant and lipid-lowering properties of TFG. Fermentation decreased tea polyphenols, flavonoids, caffeine, soluble sugars, theaflavins, and catechins, while increasing free amino acids and theabrownins. The microbial bioconversion process led to the generation of decorated flavonoids, phenolic acids, terpenoids, alkaloids, nucleotides, and amino acids.

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Theaflavins, benzotropolone compounds formed during black tea processing via catechin condensation, have drawn attention for their potential health benefits and diverse biological effects. This study evaluated the inhibitory effects of four theaflavin monomers-theaflavin-3'-gallate, theaflavin-3,3'-digallate, theaflavin-3-gallate, and theaflavin-on eight CYP450 enzymes using pooled human liver microsomes and specific probe substrates, and seven UGT enzymes using human recombinant UGT enzymes and specific probe substrates. Theaflavin-3'-gallate moderately inhibited CYP1A2-catalyzed phenacetin metabolism and CYP2C8-mediated amodiaquine metabolism, with IC values of 8.

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Background: Glioblastoma (GBM) is one of the most challenging malignancies in all of neoplasms. These malignancies are associated with unfavorable clinical outcomes and significantly compromised patient wellbeing. The immunological landscape within the tumor microenvironment (TME) plays a critical role in determining GBM prognosis.

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Breast cancer has become one of the most common malignant tumors in women, and the incidence rate is increasing annually in men. This study focused on exploring the prognostic significance of the combined detection of serum ALP and LDH in patients with breast cancer. We enrolled 80 individuals with male breast cancer (MBC), female breast cancers (FBCs) were randomly matched via propensity score matching (PSM).

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It is of substantial scientific interest to detect mediators that lie in the causal pathway from an exposure to a survival outcome. However, with high-dimensional mediators, as often encountered in modern genomic data settings, there is a lack of powerful methods that can provide valid post-selection inference for the identified marginal mediation effect. To resolve this challenge, we develop a post-selection inference procedure for the maximally selected natural indirect effect using a semiparametric efficient influence function approach.

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Rationale: Immunoglobulin A (IgA) deficiency, a rare, highly heritable trait, is associated with frequent pulmonary infections, emphysema, airway changes and low lung function; however, it is unclear if reduced IgA levels may affect lung structure and function.

Methods: Serum IgA, IgA1 and galactose-deficient IgA1 (Gd-IgA1) levels were measured in the population-based Multi-Ethnic Study on Atherosclerosis (MESA). The MESA Lung Study measured percent emphysema on cardiac CT and airway dimensions on chest CT, and performed spirometry.

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Tea processing significantly contributes to the heterogeneity of tea polysaccharide conjugates; however, the specific mechanisms underlying their formation remain unclear. In the present work, it is found that rolling is the critical stage for the formation of black tea polysaccharide conjugates. In vitro enzymatic reactions demonstrated that oxidases, particularly peroxidase with synergistic support from polyphenol oxidase, mediate conjugate formation.

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Growing evidence suggests that abnormal lipid metabolism occurs in amyotrophic lateral sclerosis, even in the presymptomatic stage, implying an etiologic link. However, the genetic mechanism underlying altered lipid levels in amyotrophic lateral sclerosis remains elusive. Therefore, in this study, we performed genetic correlation analysis, a cross-trait meta-analysis, tissue-specific enrichment analysis, and bidirectional two-sample Mendelian randomization analysis of European population to explore whether there is a genetic and causal relationship between lipids and amyotrophic lateral sclerosis.

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•Leaf structure, physicochemical, and volatile pattern in new shoot of 'Ruchengbaimaocha' (RCBM) were explored.•Aroma volatiles disturbtion between leaf and sterm exhibited significant variation.•New shoot of RCBM exhibited the suitable processing potential of black tea and white tea.

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Solar greenhouse is a primary agricultural facility in northern China during winter, providing a certain level of security for the demand for vegetables and melons in the northern regions. However, there remains a lack of uniformity between crop requirements and the light and thermal environment within the planting area of the greenhouse, resulting in non-uniform growth and development of crops. The present study set out with the objective of investigating the impact of the light environment on the internal conditions of a solar greenhouse.

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Epstein-Barr virus, the first identified human DNA tumour virus, is detectable in more than 90% of nasopharyngeal carcinoma patients in endemic regions. The 3D chromosome conformation analysis reveals that virus‒host chromatin interactions induce the spatial reorganisation of loops and compartments, resulting in "enhancer infestation" and switch of "H3K27 bivalency" at EBV-interacting regions. Through this mechanism, EBV hijacks KDM5B, a gatekeeper of genome stability, and its binding targets, leading to aberrant activation of an EBVIR-enhancer-KDM5B signature.

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To study the inhibitory mechanism of theaflavins on nasopharyngeal carcinoma cells to define a solid Chinese herbal antitumor remedy through metabolomics approaches. Various concentrations of theaflavin-3,3'-digallate (TF3) were examined for their effects on proliferation, migration, invasion, and apoptosis of nasopharyngeal carcinoma (NPC) cells by CCK-8, colony-forming assay, wound healing assay, trans-well migration assay, and Hoechst staining assay. Moreover, metabolomics analysis along with UHPLC-Q-TOF mass spectrometry and UHPLC-Q-Exactive Orbitrap mass spectroscopic analyses were also performed.

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The albino tea cultivars represented by 'Baiye 1', characterized by their naturally enriched amino acid content and reduced polyphenol levels, exhibit distinctive sweet and umami flavors along with honey-like aromas, characteristics that are uncommon in traditional black teas. Nevertheless, the metabolic transformations underlying these superior sensory qualities during processing remain insufficiently understood. Here, UPLC-HRMS and HS-SPME-GC-MS/MS were employed to analyze non-volatile and volatile compounds respectively during 'Baiye 1' black tea (BYBT) processing.

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Growth/differentiation factor-15 (GDF15) is a secreted peptide hormone and cytokine that is strongly associated with dementia risk. However, the extent to which plasma GDF15 represents a biomarker and driver of dementia risk remains unclear. Across multiple cohorts, we demonstrated that plasma GDF15 is associated with greater dementia risk over 15-to 25-year follow-up periods when measured in midlife, with stronger associations observed for vascular dementia compared to Alzheimer's disease (AD).

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The decline in differentiation capacity during skeletal muscle (SkM) aging contributes to the deterioration of skeletal muscle function and impairs regenerative ability. Epicatechin gallate (ECG), a major functional component of catechins found in tea, has an unclear role in aging-related sarcopenia. In vivo experiments in 54-week-old C57BL/6J mice showed that ECG treatment improved exercise performance, muscle mass, and fiber morphology and downregulated the expression of the testosterone metabolic enzyme gene in aged mice.

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In this study, the aroma characteristics of jasmine tea (JT) scented by three kinds of multipetal jasmine, Xiangfei 2, 4 and 11 were investigated with common double-petal jasmine as control. Compared with the strong floral aroma of double-petal jasmine tea (TS), the JT scented with Xiangfei 2 (TC) showed fresher aroma, the JT scented with Xiangfei 11 (TB) exhibited sweeter aroma, while the overall aroma of JT scented by Xiangfei 4 (TA) was overall lower. Among them, Benzoic acid, 2-hydroxyl-, ethyl ester contributed to TB's sweet note, 3-Hexen-1-ol, benzoate, (Z) - and Methyl salicylate were related to the fresh aroma of TC, Linalool, Methyl anthranilate, 4-Hexen-1-ol, acetate and Benzyl alcohol were linked to TS's floral aroma.

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Dietary intervention is crucial for the clinical management of alcoholic liver injury. As the primary bioactive component in fermented tea, theaflavin-3,3'-digallate (TF3) possesses potent antioxidative and anti-inflammatory capacities, but its protective mechanisms against alcoholic liver injury via the gut-liver axis require systematic elucidation. This study evaluated the protective effects and underlying mechanisms of high-purity TF3 (2.

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Jasmine tea (JT) is a scented tea that utilizes the adsorption properties of processed tea to adsorb the aroma released by jasmine flowers. JT boasts a long history of production and consumption, stands out in the competitive tea market for its distinctive blend of tea and jasmine aromas, and has gained increasing prominence among consumers and researchers worldwide. In recent decades, more research has been conducted on JT, including the chemical basis for the formation of the characteristic flavor, the improvement of the process, and the potential health benefits.

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Instrumental variables (IVs) are widely used to study the causal effect of an exposure on an outcome in the presence of unmeasured confounding. IVs require an instrument, a variable that ( ) is associated with the exposure, ( ) has no direct effect on the outcome except through the exposure, and ( ) is not related to unmeasured confounders. Unfortunately, finding variables that satisfy conditions or can be challenging in practice.

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Greenhouses offer optimal environments for crop cultivation during the winter months. The rationale for this study was identified as the synergistic exchange of air between the soil, the wall, and the indoor environment within the greenhouse (referring to the coupling law of the temperature fields of the three elements in space and time, including the direction of heat transfer and the consistency of the temperature zoning), thereby maintaining a more optimal temperature. However, there is a paucity of research on the impact of different spans on the thermal environment in solar greenhouses and even fewer studies on the synergistic law of changes in soil-wall indoor air in solar greenhouses with different spans.

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This study proposes a novel method to investigate the effects of friction reducers on the microstructure and permeability of gas shale, using the Longmaxi formation as a case study. By combining high-pressure mercury injection (HPMI) data, the pore size distributions (PSDs) and permeability of gas shale sample were derived from low-field nuclear magnetic resonance (NMR) T spectra under various immersion time conditions. The results demonstrate that this method effectively illustrates the impact of friction reducer on gas shale microstructure across different immersion durations.

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