Publications by authors named "Ai-Guo Xu"

is a medicinal macrofungus cultivated extensively in China. Both the mycelia and fruiting bodies of have remarkable therapeutic properties, but it remains unclear whether the mycelia may serve as a substitute for the fruiting bodies. Furthermore, is a perennial fungus with therapeutic components that vary significantly depending on the growing year of the fruiting bodies.

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Article Synopsis
  • The study focused on the Chinese "Lingzhi" genus, exploring the metabolite differences among four edible and medicinal species using advanced chromatography techniques.
  • A total of 575-764 significant metabolites were identified, with notable differences mainly in amino acids, terpenes, nucleotides, alkaloids, and lipids.
  • The research suggests these advantageous metabolites may impact various diseases and highlights potential targets for product development in food and medicine.
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Background: are two genera within the family Lyophyllaceae, which show an apparently poor species diversity worldwide. During the field investigation on wild macrofungi, six interesting collections within genera are discovered in the northeastern China.

Methods: To identify whether these collections of Gerhardtia and Ossicaulis are novel species, we performed phylogenetic analyzes using the following DNA regions: the internal transcribed spacer (ITS) region and the large subunit nuclear ribosomal RNA (nrLSU) region.

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Background: The long-term pulmonary function and related physiological characteristics of COVID-19 survivors have not been studied in depth, thus many aspects are not understood.

Methods: COVID-19 survivors were recruited for high resolution computed tomography (HRCT) of the thorax, lung function and serum levels of SARS-CoV-2 IgG antibody tests 3 months after discharge. The relationship between the clinical characteristics and the pulmonary function or CT scores were investigated.

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Background: The symptomatic bradyarrhythmia is Class I indication for pacing therapy which is not a radical cure. The present study aimed to assess the feasibility and to present the initial results of the restricted ablation of the parasympathetic innervation surrounding sinus and atrioventricular (AV) nodes for treating patients with bradyarrhythmia.

Methods: A total of 13 patients with cardiogenic syncope were included from May 2008 to June 2015.

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Agaricus bisporus is one of the most important commercially cultivated culinary-medicinal mushrooms worldwide. In China, most of the cultivated strains of the fungus were introduced from other countries and cultivated in the eastern provinces. In this study, 2 wild strains of A.

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Because lung cancer is the most common cause of cancer death among both men and women, focused efforts are necessary to identify and develop biomarkers that aid in the detection and treatment of this serious disease. Recent research has been aimed at understanding the roles of microRNAs (miRNAs) in tumorigenesis and their utility as cancer biomarkers. Here, miR-21 was investigated as a potential serum biomarker for non-small cell lung cancer (NSCLC).

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Objective: observe the curative effect of the simple obesity patients who are complicated with hypertension and are treated by oral drugs under the adjuvant treatment of acupoint massage nursing.

Methods: a total of 42 patients, who suffer from simple obesity but are complicated with mild to moderate hypertension, are selected and then randomly divided into an observation group and a control group by the digital table method. Each group consists of 21 patients.

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Objective: Treat the patients suffered from coronary heart disease with oral western medicine, combining with magnetic pulse acupoint stimulation, and observe the therapeutic effects of such combination therapy method.

Methods: 56 old people with coronary heart disease are randomly divided into a treatment group and a control group. Both groups of patients are treated by the routine drugs, in addition, the patients of the treatment group are treated by magnetic pulse therapy additionally.

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Asthma is a complex airways disease resulting from the input of both biological and environmental factors. Previous studies of single-nucleotide polymorphisms in toll-like receptor 4 (TLR4), which produces a protein involved in regulating T cell populations, have presented conflicting results regarding its role in asthma severity. In the current study, individuals with asthma were genotyped for variants of TLR4, and the genotypes were compared with asthma severity and T cell subpopulations.

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Two new macrosporin dimers (1-2) along with four known compounds (3-6) were isolated from the extracts of the fungal strain Alternaria sp. XZSBG-1 from the sediment of the salt lake in the Bange, Tibetan, China. Their structures were determined by spectroscopic methods, mainly by 2D NMR spectra.

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Numerous theoretical and experimental efforts have been paid to describe and understand the dislocation and void nucleation processes that are fundamental for dynamic fracture modeling of strained metals. To date an essential physical picture on the self-organized atomic collective motions during dislocation creation, as well as the essential mechanisms for the void nucleation obscured by the extreme diversity in structural configurations around the void nucleation core, is still severely lacking in literature. Here, we depict the origin of dislocation creation and void nucleation during uniaxial high strain rate tensile processes in face-centered-cubic (FCC) ductile metals.

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MicroRNAs like miR-143 are increasingly linked to disease pathogenesis. miR-143 is enriched in vascular smooth muscle, and several single nucleotide polymorphisms have been identified in this miRNA. The aim of the current study was to explore a potential correlation between a polymorphism in the miR-143 promoter region, rs4705342, and essential hypertension (EH).

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In our previous work, we have pointed out that the shock-induced phase transition in iron occurs with the help of interface energy which reduces the potential barrier between two phases. Here, through studying the nucleation and growth mechanisms of hcp domains in compressed iron, we find that the flatted-octahedral-structure (FOS) is the primary structural unit of the embryo nucleus and phase interface of hcp domains, and the interfacial energy is reduced via formation of FOSs. The phase transition process can be described by the following four stages: (i) Some atoms deviate from their equilibrium positions with the aid of thermal fluctuations to form FOSs with two different deformation directions in the local region; (ii) FOSs with different deformation directions aggregate to form a thin stratified structure like twin-crystal configuration; (iii) The thin stratified structure undergoes a relative slip to form the new hcp phase; (iv) The hcp phase domain grows up through the formation of new FOSs along the phase boundary.

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Peroxisome proliferator-activated receptor (PPAR) γ is a nuclear receptor involved in the regulation of lipid metabolism. In the present study, we sought to investigate the effects of emodin, an anthraquinone derivative isolated from the roots of Rheum palmatum, on PPARγ signalling and cholesterol efflux in macrophage foam cells. Oxidized low-density lipoprotein (oxLDL)-stimulated THP1 macrophages were incubated with different concentrations of emodin (0-10 μmol/L) for 18 h.

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Emergence and time evolution of micro-structured new-phase domains play a crucial role in determining the macroscopic physical and mechanical behaviors of iron under shock compression. Here, we investigate, through molecular dynamics simulations and theoretical modelings, shock-induced phase transition process of iron from body-centered-cubic (bcc) to hexagonal-close-packed (hcp) structure. We present a central-moment method and a rolling-ball algorithm to calculate and analyze the morphology and growth speed of the hcp phase domains, and then propose a phase transition model to clarify our derived growth law of the phase domains.

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Renal aquaporin-2 (AQP2) is critical for maintaining water balance and is associated with hypertension. Anti-hypertensive drugs, including imidapril, improve kidney function; however, it remains unclear whether these effects are mediated through the regulation of AQP2. In this study, the effects of imidapril on AQP2 expression in the kidneys and excretion in urine were assessed in hypertensive rats.

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Mitochondrial DNA mutations have been increasingly associated with various diseases. An association between the mitochondrial tRNA gene mutation, tRNAMet, and primary hypertension has been suggested. In the present study, the association between the tRNAMet mutation and the development of primary hypertension was investigated by assessing clinical and biological indicators in 800 patients with primary hypertension.

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While a number of genetic and environmental risk factors for coronary heart disease (CHD) have been identified, the list of potential risk factors remains long. One candidate is dimethylarginine dimethylaminohydrolase (DDAH2), which is known to be polymorphic in humans. The gene product indirectly increases the endogenous production of nitric oxide, an anti-atherogenic molecule.

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To characterize von Willebrand factor (vWF) gene polymorphisms at site A1381T and the correlation of plasma vWF levels with coronary heart disease, the vWF genotypes at site A1381T were analyzed by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) in patients diagnosed with coronary heart disease and normal controls (n=110 per group), and plasma vWF levels were measured by enzyme‑linked immunosorbent assay. The results showed that the plasma vWF levels were higher in the experimental group than in the control group and had no association with gender (t=11.69, p<0.

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