Publications by authors named "Wu-xiu Li"

Imidacloprid (IMI) and diuron (DIU) are widely used pesticides in agricultural production. However, their excessive use and high residues have caused harm to the ecological environment and human health. Microbial remediation as an efficient and low-toxic method has become a research hotspot for controlling environmental pollutants.

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Background: Globally, the rates at which the aging population and the prevalence of chronic diseases are increasing are substantial. With declining birth rates and a growing percentage of older individuals, the demand for nursing staff is steadily rising. However, the shortage of nursing personnel has been a long-standing issue.

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Background: In a global context, the shortage of nursing personnel has emerged as a significant challenge, particularly in countries such as China experiencing population aging. The inadequacy of nursing human resources has become one of the primary threats affecting the quality of health services available to Chinese residents. Therefore, forecasting the demand for nursing personnel has become an important issue.

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Microorganisms produce a wealth of structurally diverse specialized metabolites with a remarkable range of biological activities. The Phomopsis sp. LGT-5 was obtained through tissue block and repeatedly crossed methods from Tripterygium wilfordii Hook.

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Celastrol (), obtained from the roots of Hook F., is most likely to become an antitumor drug, but with severe cytotoxicity. Due to the lack of modifiable sites in the structure of celastrol, the structural diversity of the modified products obtained by synthesis in the previous studies is insufficient, which hinders the pace of its patent medicine.

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Trace amounts of components in traditional Chinese medicine are considered pharmacological active substances used for treating many serious diseases. However, purifying all the trace substances and making clear their structures are not easy. In this context, high-performance liquid chromatography coupled with quadrupole time-of-flight tandem mass spectrometry based molecular networking was applied to investigate the chemical constituents of the roots of Aconitum kusnezoffii Reichb.

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Chemical constituents of water extracts of Asplenium ruprechtii were investigated. Five compounds were isolated by silica gel, Sephadex LH-20 gel column chromatographies and preparative HPLC, and their structures were identified by various spectral analyses as aspleniumside G(1), trans-p-coumaric acid(2), trans-p-coumaric acid 4-O-β-D-glucoside(3), cis-p-coumaric acid 4-O-β-D-glucoside(4), and(E)-ferulic acid-4-O-β-D-glucoside(5). Among them, compound 1 is a new 9,19-cycloartane glycoside.

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Article Synopsis
  • A new cycloartane glycoside, named aspleniumside F, was characterized from the plant Asplenium ruprechtii, which is traditionally used in East Asian folk medicine to treat a specific vascular condition.
  • The study identified three types of known glycosides, focusing on their complex chemical structures determined through advanced spectroscopic techniques and comparisons to existing literature.
  • The antioxidant activity of the identified compounds (2-6) was evaluated, showing significant bioactivity with varying degrees of effectiveness.
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Article Synopsis
  • - Five new cycloartane glycosides (named aspleniumside A-E) were found in the Asplenium ruprechtii Sa. Kurata plant, traditionally used in folk medicine for treating thromboangitis obliterans in East Asia.
  • - The structure and stereo-chemistry of these compounds were examined using advanced NMR techniques, revealing a unique 24R configuration and indicating that the plant's growing environment affects its chemical makeup.
  • - The new glycosides were tested for cytotoxicity against cancer cells (HL-60 and HepG2), showing promising results with potential applications in cancer treatment when compared to the standard drug sorafenib.
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Hepatoid adenocarcinoma of the stomach (HAS) is an extremely rare and unique gastric malignancy. The present study aimed to examine the relevance of the clinicopathological characteristics of HAS with patient prognosis. We retrospectively reviewed clinical data of 34 HAS patients treated at our institution between January 2010 and December 2016, as well as 294 cases reported prior to 2017 in research databases.

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Article Synopsis
  • The study explores the role of γδ T cells in acute myocardial infarction (AMI) by analyzing their T cell receptor (TCR) repertoire and expression levels of regulatory genes like Foxp3 and IL-17A in 25 AMI patients compared to 14 healthy controls.* -
  • Results showed significantly higher levels of certain TCR Vγ subfamilies in AMI patients, along with a restrictive pattern in TCR Vδ subfamilies, indicating a pronounced immune response in these patients.* -
  • The findings suggest that the abnormal expression of TCR γδ repertoire and IL-17A in γδ T cells may have implications for understanding the immune mechanisms underlying AMI.*
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Objective: To induce cisplatin-resistant cervical squamous carcinoma cell line and investigate the drug resistant mechanisms and adenovirus trans-gene therapeutical treatment.

Methods: The cisplatin-resistant subline,designated C-33A/cis,was originated by growing parental C-33A cells with gradually increasing doses of cisplatin. The cytotoxicity of cisplatin was determined by CCK-8 assay,and the CTR1 expression was measured by Western blot.

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Using various chromatographic methods, a new piperidinone alkaloid, (3S)-3-{4-[(1E)-3-hydroxyprop-1-en-1-yl]-2-methoxyphenoxy}piperidin-2-one (1), together with 10 known compounds, bergapten (2), xanthotoxol (3), isopimpinellin (4), isobergapten (5), heratomol-6-O-β-d-glucopyranoside (6), scopoletin (7), apterin (8), 3-methoxy-4-β-d-glucopyranosyloxypropiophenone, (praeroside; 9), tachioside (10) and coniferin (11), were isolated from roots of Heracleum dissectum Ledeb. Their structures were elucidated on the basis of physicochemical properties and the detailed interpretation of various spectroscopic data. All the isolated compounds were screened for anti-inflammatory activity in vitro.

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Four new taraxastane-type triterpenoids acids 3β,22α-dihydroxy-20-taraxasten-30-oic acid (1), 3β-hydroxy-22-oxo-20-taraxasten-30-oic acid (2), 3-oxo-22α-hydroxy-20- taraxasten-30-oic acid (3), and 3β,19β-dihydroxy-20-taraxasten-30-oic acid (4) were isolated and characterized from Cirsium setosum (Willd.) MB. Their structures were determined by the combination of 1D and 2D NMR experiments ((1)H-(1)HCOSY, HSQC, HMBC and ROESY) and mass spectrometry.

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Fourier transform infrared spectroscopy (FT-IR), UV spectroscopy and fluorescence spectroscopy combined with inductively coupled plasma mass spectrometry (ICP-MS) were employed to analyze Alpinia Katsumadai harvested from Hainan Baisha and Bawangling. The results from FT-IR indicated that the emergence of several characteristic absorption peaks around 1 051, 1 390,2 976 and 3 300 cm-1 belong to flavonoids. In light of second derivative spectra, two similar peaks around 2 977.

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In this study, we used a self-contrast method, which excluded the individual difference, to evaluate the inhibitory effect of chrysosplentin (CHR) in the presence or absence of artemisinin (ART) on the P-glycoprotein (P-gp) transport activity. A sensitive and rapid UHPLC-MS/MS method was applied for quantification of digoxin, a P-gp-specific substrate, in rat plasma. A pharmacokinetic study was carried out: first after an oral administration of digoxin at a dose of 0.

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The diethyl sulfate (DES) mutagenesis was chosen for the mutagenic treatment to Phellinus igniarius, and the relationship of mutagenesis time and death rate was investigated with 0.5% DES. The differences of mycelial growth speed, liquid fermentation mycelia biomass, morphology and pigment classes of secondary metabolites production speed and antioxidant activities of metabolite products were discussed.

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Purpose: The aim was to assess atrial fibrillation (AF) and vulnerability in Wolff-Parkinson-White (WPW) syndrome patients using two-dimensional speckle tracking echocardiography (2D-STE).

Methods: All patients were examined via transthoracic echocardiography and 2D-STE in order to assess atrial function 7 days before and 10 days after RF catheter ablation. A postoperative 3-month follow-up was performed via outpatient visit or telephone calls.

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Objective: The results of a previous study showed that a clear dysregulation was evident in the global gene expression of the BCL11A-suppressed B-lymphoma cells. In this study, the bone morphogenetic protein receptor, type II (BMPR2), E1A binding protein p300 (EP300), transforming growth factor-β2 (TGFβ2), and tumor necrosis factor, and alpha-induced protein 3 (TNFAIP3) gene expression patterns in B-cell malignancies were studied.

Methods: The relative expression levels of BMPR2, EP300, TGFβ2, and TNFAIP3 mRNA in B-lymphoma cell lines, myeloid cell lines, as well as in cells from healthy volunteers, were determined by real-time quantitative reverse transcript-polymerase chain reaction (qRT-PCR) with SYBR Green Dye.

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Objective: To exploring the relationship between continuous cropping obstacle and autotoxicity of Astragalus membranaceus var. mongholicus, autotoxic effect of plant aqueous extract were determined.

Methods: Distilled water (CK), aqueous extract of plant, including root, stem and leaf (12.

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A new periplogenin cardenolide, periplogulcoside (1), together with three known cardenolides, was isolated from the seeds of Antiaris toxicaria. The structure of the new compound was characterized as periplogenin-3-O-β-D-glucopyranosyl-(1 → 4)-β-D-glucopyranoside (1) by spectroscopic methods including 1D and 2D NMR, HR-TOF-MS, and CD spectrometry, and the known compounds were identified by comparison of their NMR and HR-TOF-MS data with those reported in the literature. Compound 1 showed significant cytotoxicity against Hela and HepG-2 cell lines.

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Objective: The study aimed to develop the assay of chrysosplenetin (CHR), a metabolic inhibitor of artemisinin by UPLC-MS/MS in rat plasma and investigate the pharmacokinetics parameters of CHR.

Method: The plasma samples were precipitated by acetonitrile to remove the proteins. Separation was carried out on a Shim-pack XR-ODS C,18(2.

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Objective: The research aimed to investigate the entophytic fungal community of Cynanchum Komarrovii, including the biodiversity in different organs and the correlations with ecological environment. Endophytic fungi with patent bioactivity were also rapidly screened.

Method: PDA medium was used to isolate and purify the endophytic fungi from C.

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Two new monacolin analogs, monacolins O (1) and P (2), along with three known analogs, have been isolated from the ethanolic extract of Monascus purpureus-fermented rice. Their structures and absolute configurations were elucidated by spectroscopic methods, especially 2D NMR and CD spectral analyses as well as chemical method. Both 1 and 2 were tested against five tumor cell lines, and compound 1 exhibited selective cytotoxic activity against A2780 and A549 cell lines, with IC50 values of 3.

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Vascular endothelial growth factor-D (VEGF-D) together with VEGF-C is considered to be associated with lymphangiogenesis and angiogenesis and involve in tumorization. This study aims to investigate the influence of exogenous VEGF-D gene on the biophysical property of cell surface of lung adenocarcinoma cell line. A panel of lung adenocarcinoma cell lines were examined the expression of VEGF-D and VEGF-C by real-time PCR.

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