Publications by authors named "Yanxia Yu"

The approved intravenous adeno-associated virus (AAV) therapies are limited by the widespread prevalence of pre-existing anti-AAV antibodies in the general population, which are known to restrict patients' ability to receive gene therapy and limit transfection efficacy in vivo. To address this challenge, we have developed a novel recombinant human immunoglobulin G degrading enzyme KJ103, characterized by low immunogenicity and clinical value for the elimination of anti-AAV antibodies in gene transfer. Herein, we conducted two randomized, blinded, placebo-controlled, single ascending dose Phase I studies in China and New Zealand, to evaluate the pharmacokinetics, pharmacodynamics, safety and immunogenicity of KJ103 in healthy volunteers.

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Background: TgMIC1, a soluble adhesion protein that typically facilitates parasite invasion, exhibited varying expression levels among distinct virulence strains of Chinese 1 Toxoplasma. This study aims to explore its role in immunological regulation and its association with diverse postinfection outcomes in Toxoplasma infection.

Methods: First, the mic1 knockout strain Wh3Δmic1 was generated and assessed for its virulence and proliferative capacity.

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  • This study aimed to compare the effectiveness and safety of linezolid versus teicoplanin in treating hospital-acquired pneumonia (HAP) caused by Gram-positive bacteria in patients with renal issues.
  • The results showed that linezolid achieved a significantly higher bacterial eradication rate (88.5% vs 63.4%) but also led to more adverse reactions (42.0% vs 25.0%).
  • The optimal dosage strategy for linezolid was determined, recommending 300 mg every 12 hours for patients with better renal function and 200 mg for those with more severe renal insufficiency.
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A nomogram to estimate the risk of linezolid-induced thrombocytopenia in patients with renal impairment is not available. The aim of the study is to develop a nomogram for predicting linezolid-induced thrombocytopenia in patients with renal impairment and to investigate the incremental value of PNU-142300 concentration beyond clinical factors and linezolid trough concentration (C) for risk prediction. Logistic regression was used to identify independent risk factors for linezolid-induced thrombocytopenia in patients with renal impairment and nomograms were established.

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  • The study focused on creating a pharmacokinetic model for the antibiotic linezolid in premature neonates to optimize its administration.
  • Blood concentration data were collected from 54 premature neonates using LC-MS/MS, and a population pharmacokinetic model was developed using nonlinear mixed effects modeling.
  • The findings indicated that the ideal dosing regimen varies based on the neonates' body surface area, with specific mg/kg dosages recommended for achieving effective therapeutic levels.
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An effective method was developed for preparing galloylated procyanidins (GPCs) using galloyl-attached nucleophilic degradation. Under degradation conditions optimized through Box-Behnken design and single-factor experiments, two dimeric and three tetrameric GPCs were produced, with the yield of procyanidin B2-3'--gallate (B2-3'-G) reaching up to 232 mg/g (PPCs). The structure of B2-3'-G was identified by UV, FTIR, NMR, CD, MS, and phloroglucinolysis.

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Background: Pleural effusion caused by fibrosing mediastinitis is rarely reported. This study aimed to summarize the clinical manifestations, diagnosis and treatment of transudative pleural effusion due to fibrosing mediastinitis.

Methods: Medical records and follow-up data of 7 patients with transudative pleural effusion due to fibrosing mediastinitis in Beijing Chaoyang Hospital between May 2014 and Feb 2018 were retrospectively analyzed.

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  • Freckles are a common skin condition that has a hereditary link, with previous research identifying many genetic risk factors through studies on other diseases.
  • A new study conducted a Genome-Wide Association Study (GWAS) and meta-analysis on 4,813 Chinese individuals, revealing new genetic variants linked to freckles.
  • The research identified 59 new single nucleotide polymorphisms (SNPs) and 13 novel genes that may increase susceptibility to freckles, contributing significantly to the understanding of their genetic basis.
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  • * To improve the performance of Sn anodes, 4-tert-octylphenol pentaethoxylate (POPE) is introduced as an electrolyte additive, which helps create a more stable Sn surface and reduces hydrogen gas production.
  • * The resulting Sn film anode shows enhanced electrochemical stability for over 480 hours and effective performance in a PbO//Sn battery, suggesting a viable approach for creating better reversible Sn metal anodes.
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Objective: To establish the population pharmacokinetics (PPK) of magnesium sulfate (MgSO)in women with preeclampsia (PE), and to determine the key covariates having an effect in magnesium pharmacokinetics in Chinese PE.

Methods: Pregnant women with PE prescribed MgSO4 were enrolled in this prospective study from April 2021 to April 2023. On the initial day of administration, the patients were administered a loading dose of 5 g in conjunction with 10 g of magnesium sulfate as a maintenance dose.

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Background: The aim of the present study was to evaluate the impact of intratumoral metabolic heterogeneity and quantitative F-FDG PET/CT imaging parameters in predicting patient outcomes in thymic epithelial tumors (TETs).

Methods: This retrospective study included 100 patients diagnosed with TETs who underwent pretreatment F-FDG PET/CT. The maximum and mean standardized uptake values (SUVmax and SUVmean), metabolic tumor volume (MTV), and total lesion glycolysis (TLG) on PET/CT were measured.

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In this study, an effective method for preparation of bioactive galloylated procyanidin B2-3'--gallate (B2-3'-G) was first developed by incomplete depolymerization of grape seed polymeric procyanidins (PPCs) using l-cysteine (Cys) in the presence of citric acid. The structure-activity relationship of B2-3'-G was further evaluated through establishing lipopolysaccharide (LPS)-induced inflammation in RAW264.7 cells.

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  • Vitiligo is an autoimmune disease that causes the loss of melanocytes, and while genetic factors are known to contribute, the exact causes are not fully understood.
  • A new study conducted a genome-wide meta-analysis, combining data from two cohorts of vitiligo patients and healthy controls, revealing 11 new genetic variants linked to the disease.
  • The research highlights that these genetic variants primarily relate to immune functions, providing valuable insights into the underlying mechanisms of vitiligo and how genetics influences its development.
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Aims: Systemic lupus erythematosus (SLE) is an autoimmune disease with a high prevalence worldwide. This study aimed to examine the correlation between serum bilirubin levels and SLE.

Methods: The Cochrane library, Embase, PubMed, and China National Knowledge Infrastructure (CNKI) databases were examined and assessed until March 2023.

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Aqueous alkaline Zn-based batteries (AAZBs) possess great promise for large-scale applications thanks to their higher discharging plateau and unique reaction mechanism. However, the capacity and rate capability of Ni-based cathodes are still unsatisfactory due to their insufficient OH adsorption and diffusion ability. Herein, heterostructured Ni S /Ni(OH) nanosheets with outstanding electrochemical performance are synthesized via a facile chemical etching strategy.

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Psychological stress has long been considered to cause the aggravation and recurrence of psoriasis, but the underlying mechanism remains largely unknown. Here, we used a mouse model of restraint-induced stress and imiquimod (IMQ)-induced psoriasiform inflammation to investigate the crosstalk between stress and the skin immune system and their functions in the pathogenesis of psoriasis. We found that stress aggravated skin inflammation and elevated serum corticosterone (CORT) levels in mice.

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Background: This study aims to investigate the risk factors for not returning to postpartum blood pressure (BP) follow-up visit at different time points in postpartum discharged hypertensive disorders of pregnancy (HDP) patients. Likewise, females with HDP in China should have a BP evaluation continuously for at least 42 days postpartum and have BP, urine routine, and lipid and glucose screening for 3 months postpartum.

Methods: This study is a prospective cohort study of postpartum discharged HDP patients.

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Currently, there is no consensus on whether maintenance dialysis increases cancer risk in patients with end-stage renal disease (ESRD). Therefore, this study was to systematically evaluate the risk of cancer among ESRD patients undergoing maintenance dialysis. Related studies on the impact of maintenance dialysis on cancer risk were retrieved from PubMed, Embase, Cochrane Library, and other databases from their respective inceptions to 19 February 2021.

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CircRNAs are implicated in the development of several cancers. Nevertheless, the involvement of circ_0000118 in the development of cervical cancer (CC) remains unclear. Circ_0000118 levels in tumor tissues and cells were examined by qRT-PCR.

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Ammonium ions (NH ), as non-metallic charge carriers, are attracting attention in aqueous batteries due to its low molar mass, element sufficiency, and non-toxicity. However, the host materials for NH storage are still limited. Herein, an oxygen defects-rich manganese oxide (MnO ) for NH storage are reported.

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Carbon-based cathodes for aqueous zinc ion hybrid supercapacitors (ZHSCs) typically undergo low Zn ion storage capability due to their electric double layer capacitance (EDLC) energy storage mechanism that is restricted by specific surface area and thickness of electric double layer (EDL). Here, we report a universal surface charge modulation strategy to effectively enhance the capacitance of carbon materials by decreasing the thickness of EDL. Amino groups with lone pair electrons were chosen to increase the surface charge density and enhanced the interaction between carbon electrode and Zn ions, thus effectively compacting the EDL.

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The hydrogen evolution and dendrite issues are the notorious culprits of the limited lifespan and Coulombic efficiency (CE) of Zn anodes, particularly at harsh test conditions. Herein, considering the Lewis acidic feature of Zn , abundant unshared pair electrons of zincophilic Lewis bases are proposed as decent electrolyte additives to stabilize Zn anodes at "Three High" conditions (high depth of discharge, high areal capacity and high current). The unshared pair electrons can remove H O from Zn solvated sheaths and confine the activity of H O by breaking its hydrogen bonding network.

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Sonodynamic therapy (SDT) has received increasing interest in cancer treatment, but its clinical application is still constrained by the low activity of sonosensitizers and their unclear mechanism. Herein, a kind of oxygen-deficient manganese oxide (MnO) nanoparticles with greatly enhanced sonodynamic activity and good biocompatibility is developed as an advanced sonosensitizer. The introduced oxygen defects can remarkably enhance the electrical conductivity of manganese oxide (MnO) nanoparticles and serve as charge trapping sites to prohibit the electron-hole pair recombination upon ultrasound (US) irradiation.

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CaMK4 has an important function in autoimmune diseases, and the contribution of CaMK4 in psoriasis remains obscure. Here, we show that CaMK4 expression is significantly increased in psoriatic lesional skin from psoriasis patients compared to healthy human skin as well as inflamed skin from an imiquimod (IMQ)-induced mouse model of psoriasis compared to healthy mouse skin. Camk4-deficient (Camk4) mice treated with IMQ exhibit reduced severity of psoriasis compared to wild-type (WT) mice.

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In vancomycin treatment, the rates of correct blood sampling and initial trough concentrations within the target range are very low. Studies of interventions by clinical pharmacists based on population pharmacokinetics (PPK) models are limited. This study aimed to evaluate the intervention effect of clinical pharmacist-mediated optimization of the vancomycin administration regimen based on a PPK model.

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