Publications by authors named "Liqing Xu"

Objective: To develop a three-dimensional (3D) image based extended tumor plane technique for robotic-assisted partial nephrectomy (RAPN).

Methods: We prospectively enrolled patients with a local renal tumor for RAPN between March 2019 and Mar 2022. 3D virtual model was reconstructed based on the computed tomography urography.

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Background: The aim of this study was to report our technical experience and mid-term outcomes of robot-assisted redo ureteral reimplantation in adults following failed primary ureteral reimplantation.

Methods: Twelve patients underwent robot-assisted redo ureteral reimplantation from December 2020 to May 2022 at double centers. Surgical procedures included anti-reflux dismembered submucosal tunnel reimplantation, anti-reflux dismembered nipple reimplantation, and anti-reflux non-dismembered submucosal tunnel reimplantation.

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Myocardial infarction (MI) is the leading cause of death worldwide and currently there are limited therapies that can regenerate the lost cardiac cells following MI. To enhance the therapeutic effects of human induced pluripotent stem cell‑derived cardiomyocytes (hiPSC‑CM) transplantation for treatment of MI, the present study sought to increase the pro‑angiogenic effect of hiPSC‑CM by overexpressing a mutated hypoxia‑inducible factor 1‑alpha (HIF‑1α; P402A; P564A) via lentivirus transfection. Morphology and the electrophysiology of the genetically engineered cell were both unchanged.

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  • Ectopic renal hydronephrosis is a rare condition with limited literature mainly consisting of case studies, presenting challenges for surgical management due to anatomical variations.
  • This study examined six adult patients who underwent minimally invasive pyeloplasty, with a median age of 27, showcasing different types of ectopic kidneys and varying surgical techniques.
  • After follow-up, 66.7% achieved surgical success, although some patients faced complications, highlighting the need for tailored approaches and continuous research in surgical techniques for this condition.
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  • This study analyzed 187 cases of neonatal COVID-19 from December 2022 to January 2023 in China, focusing on the clinical characteristics and short-term outcomes of those infected.
  • A significant portion of the infants (44.9%) experienced severe infection, often presenting with fever and respiratory symptoms, and severe cases had higher levels of certain liver and heart-related biomarkers.
  • Despite the severity, none of the neonates required specific COVID-19 treatments, with all patients ultimately being discharged after an average hospital stay of four days and none developing multisystem inflammatory syndrome.
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Conversion of quinoline C-H bonds into C-C bonds is essential for obtaining the enormous array of derivatives required for pharmaceutical and agrochemical development. Despite over a century of synthetic efforts, direct alkylation and alkenylation at C3-H positions in a wide array of quinoline precursors remain predominantly challenging and elusive. This report outlines the first successful quinoline C3-H alkylation and alkenylation reactions, exhibiting exceptional regio- and stereoselectivity, all achieved under redox-neutral and transition-metal-free conditions.

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Objective: To provide a comprehensive understanding of the clinical features of patients with synchronous and metachronous upper tract urothelial carcinoma (UTUC) and bladder urothelial carcinoma (BUC) and inform surgical and postoperative adjuvant treatment planning.

Patients And Method: A total of 292 consecutive patients with synchronous and metachronous UTUC-BUC were retrospectively enrolled and were categorized into three groups: (1) UTUC metachronous BUC (N = 185, UTUC-mBUC), (2) BUC-metachronous UTUC (N = 43, BUC-mUTUC), (3) synchronous UTUC-BUC (N = 64, sUTUC-BUC). We compared pathological characteristics and survival data among groups with Wilcoxon's rank sum tests, Pearson's chi-squared, and the Kaplan-Meier method.

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  • Proanthocyanidins (PAs) are polyphenols found in plants that influence taste and protect against herbivores, with distinct compositions in astringent (A-type) vs. nonastringent (NA-type) persimmons.
  • The study revealed that the DkDTX1/MATE1 gene plays a crucial role in increasing PA concentrations in persimmon by enhancing the expression of related biosynthesis genes and transporting PA precursors.
  • These findings suggest that manipulating DkDTX1/MATE1 could provide a way to alter PA levels and astringency in persimmons through genetic engineering.
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Objective: Complex chromosome rearrangements (CCR) are rare structural abnormalities involving at least three breakpoints, categorized into three types based on their structure: type A (three-way rearrangements), type B (double two-way translocations), and type C (exceptional CCR). However, thus far, limited data exists on preimplantation genetic testing for chromosomal structural rearrangements (PGT-SR) in CCR carriers. This study aims to evaluate the clinical outcomes and influencing factors of PGT-SR in couples with CCR.

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Objective: The aim of the study was to explore the optimal timing of gonadotropin initiation and the reasonable interval of luteinizing hormone (LH) levels in the gonadotropin-releasing hormone antagonist (GnRH-A) protocol.

Methods: A retrospective cohort study was conducted to analyze the data concerning the oocyte retrieval cycles from 1,361 cases with the GnRH-A protocol implemented. The ovarian responses (including AMH, AFC) in these patients were divided into the poor ovarian response group (an antral follicle count [AFC] ≤ 6, n = 394), the normal ovarian response group (an AFC > 6 and < 15, n = 570), and the high ovarian response group (an AFC ≥ 15, n = 397), according to the AFC.

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The main units of persimmon proanthocyanidins (PAs) are composed of flavan-3-ols including epigallocatechin gallate (EGCG) and gallocatechin gallate (GCG). Precise quantification of GCG is challenging due to its trace amounts in persimmon. In this study, to establish the optimal UHPLC-Q-Exactive Orbitrap/MS technique for the determination of PAs monomer composition in persimmon fruit flesh of different astringency types, mass spectrometry and chromatographic conditions were optimized.

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Defect structure is pivotal in advancing thermoelectric performance with interstitials being widely recognized for their remarkable roles in optimizing both phonon and electron transport properties. Diverse interstitial atoms are identified in previous works according to their distinct roles and can be classified into rattling interstitial, decoupling interstitial, interlayer interstitial, dynamic interstitial, and liquid interstitial. Specifically, rattling interstitial can cause phonon resonance in cage compound to scatter phonon transport; decoupling interstitial can contribute to phonon blocking and electron transport due to their significantly different mean free paths; interlayer interstitial can facilitate out-of-layer electron transport in layered compounds; dynamic interstitial can tune temperature-dependent carrier density and optimize electrical transport properties at wide temperatures; liquid interstitial could improve the carrier mobility at homogeneous dispersion state.

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Objective: Our study aims to prospectively compare an autologous duraplasty in situ technique (IS group) with the synthetic dural graft duraplasty (SDG group) to clarify the effectiveness and superiority of the former in the treatment of patients with Chiari malformation type 1 (CM-I).

Method: 29 patients with CM-I were randomly assigned to either IS or SDG group. In both groups, a dissection from the occipital bone was performed.

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Background: To evaluate the feasibility and safety of dual-console telesurgery with the new KangDuo system in an animal experiment and clinical study.

Methods: Six canine models were performed radical prostatectomy with dual-console KanDuo surgical robot-1500 (KD-SR-1500-RARP). The perioperative outcomes, physical and mental workload of the surgeon were collected.

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In this work, a novel 3D-DNA walker signal amplification strategy was designed to construct a fluorescent aptasensor for the detection of kanamycin (KAN). The aptasensor utilizes split aptamers for the synergistic recognition of KAN. The presence of KAN induces the split aptamers recombination to form the Mg-DNAzyme structure, which is activated by Mg to drive the 3D-DNA walker process for cascading signal amplification.

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We investigated root growth of 1-year-old seedlings under different light environments and varying doses of phosphorus fertilizer, to understand the relationship between root resource acquisition strategies and the variations of light and phosphorus availability. There were four shading intensities (full light, 65% full light, 35% full light, and 20% full light) along with three doses of phosphate fertilizer (0 (CK), 200% soil background available phosphorus, and 500% soil background available phosphorus). We measured in root morphology characteristics, architectural characteristics, and mycorrhizal colonization rates of first-order roots.

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The objective of this study is to explore the safety and effectiveness of two new models of KangDuo surgical robots for partial nephrectomy in porcine models, and evaluate the ergonomic characteristics from both subjective and objective perspectives. Twelve porcine models were equally divided for KD-SR-1500 (three-arm) and KD-SR-2000 (four-arm). The perioperative outcomes, and physical and mental workload of the surgeon were compared.

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Since 2010, the cases and incidences of human brucellosis have been increasing annually in Qinghai (QH) Province. Molecular epidemiology and phylogenetic analyses of strains from this region are crucial to better understand the transmission of the disease and the evolutionary patterns of strains. In this study, classical bio-typing assay, multilocus variable-number tandem repeat analysis, and the whole-genome sequencing-single-nucleotide polymorphism approach were used to illustrate the epidemiological and evolutionary patterns of .

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Background: Extracorporeal membrane oxygenation (ECMO) is a vital technique for severe respiratory or heart failure patients. Bleeding and thrombotic events are common during ECMO and negatively impact patient outcomes. Unfractionated heparin is the primary anticoagulant, but its adverse effects limit its use, necessitating alternative anticoagulants.

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Proanthocyanidins (PAs) are specialized metabolites that influence persimmon fruit quality. Normal astringent (A)-type and non-astringent (NA)-type mutants show significant variation in PA accumulation, but the influencing mechanism remains unclear. In this study, among the six identified DTXs/MATEs proteins associated with PA accumulation, we observed that allelic variation and preferential transport by DkDTX5/MATE5 induced variation in PA accumulation for A-type and NA-type fruit.

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Article Synopsis
  • Progestins are being explored as an alternative to GnRH analogues for preventing premature hormone surges during fertility treatments, but their long-term effectiveness and safety are still unclear.
  • A study compared cumulative live birth rates (LBR) among different treatment groups, revealing that a progestin-primed ovarian stimulation (PPOS) regimen resulted in lower cumulative LBR compared to GnRH analogues.
  • The findings suggest that the PPOS regimen may negatively impact both the cumulative LBR and the quality of embryos, despite similar perinatal outcomes across all treatment groups.
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Objective: To facilitate immunotherapy and prognostic assessment of non-small cell lung cancer (NSCLC), we established a novel immunogenomic classification to provide valid identification criteria.

Methods: The immune enrichment scores were calculated by single sample gene set enrichment analysis (ssGSEA) and clustered into Immunity_L and Immunity_H, and the reliability of this classification was demonstrated. Immune microenvironment score and immune cell infiltration analysis of NSCLC were also performed.

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Mastering nuclear fusion, which is an abundant, safe, and environmentally competitive energy, is a great challenge for humanity. Tokamak represents one of the most promising paths toward controlled fusion. Obtaining a high-performance, steady-state, and long-pulse plasma regime remains a critical issue.

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