Publications by authors named "Xi Qin"

Background: Treatment of hypopharyngeal carcinoma involves surgery, radiotherapy, and chemotherapy. The combination of docetaxel, cisplatin, and 5-fluorouracil as a standard induction chemotherapy regimen allows enhanced laryngeal preservation after surgery. In this study, our objective was to retrospectively analyze the short-term efficacy and adverse events of nab-paclitaxel plus cisplatin or nedaplatin plus tegafur/gimeracil/oteracil as an induction chemotherapy regimen for hypopharyngeal cancer.

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Background: The high myopia prevalence in young East Asian children necessitates early detection and prevention strategies. Axial length (AL), corneal radius of curvature (CR), and the AL to CR ratio (AL/CR) are potential myopia biomarkers. However, the influence of genetic, growth and development, and environmental factors on these metrics in Chinese preschool children remains unclear.

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Carbon sink service (CSS) is crucial in addressing global warming and provides theoretical support for research on human‒system coupling. CSS generation, flow, and utilization in the composite ecosystem of mountains, rivers, forests, farmlands, lakes, and grasslands (CEMRFFLG) provides theoretical support for sustainable development. Quantifying the coupled supply‒flow‒demand processes and mechanisms of the CSS in CEMRFFLG remains a pressing issue for the study of carbon sink service flows (CSSFs).

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Background: Information on the impact of Progestin-primed ovarian stimulation (PPOS) protocol on embryo euploid status and preimplantation genetic testing for aneuploidy (PGT-A) outcomes is limited compared with other ovarian stimulation protocols. We conducted a retrospective cohort study and a meta-analysis to evaluate the application value of the PPOS protocol in PGT-A cycles.

Methods: In the cohort study, we retrospectively analyzed 962 ovarian stimulation cycles, including 413 cycles of PPOS protocol, 327 cycles of gonadotropin-releasing hormone antagonist (GnRH-ant) protocol, and 222 cycles of GnRH agonist (GnRH-a) protocol.

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To analyze the treatment modalities and trends for neovascular glaucoma (NVG) over the past 10 years, we conducted a retrospective analysis at Zhongshan Ophthalmic Center on 1331 NVG inpatients who received 1459 treatments for 1383 eyes between January 1, 2012, and December 31, 2021. Over time, we observed a progressive annual increase in both the number of patients and the volume of surgeries for NVG, with an annual percentage change (APC) of 10.23 % (95 % confidence interval [CI]: 5.

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Objective: Understanding the impact of early childhood physical growth on visual development is crucial, as this period marks a critical phase for foundational physical and ocular maturation. The aim of the current study was to investigate the associations between the anthropometric indicators of height, weight, and body mass index (BMI), as well as visual acuity, refraction, and ocular biometrics, in Chinese preschool children.

Methods: This cross-sectional study consisted of 1,477 Chinese 3- to 6-year-old preschool children from nine kindergartens in Tongzhou District, Beijing.

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Article Synopsis
  • Chaos-based secure communication technology enhances the security of information transmission at the physical layer.
  • This paper introduces a neural network-based chaos shift keying scheme that encodes digital data by changing time-delayed dynamical mapping relationships.
  • The proposed method shows strong performance in resisting noise, return mapping attacks, and time delay signature extraction, making it capable of secure communication even in challenging environments.
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Pulmonary large cell neuroendocrine carcinoma (LCNEC) has a poor prognosis, and there is no consensus on optimal treatment strategies for pulmonary LCNEC. Certain patients with pulmonary LCNEC may benefit from targeted and traditional programmed cell death protein-1 (PD-1) monoclonal antibody therapies, however, for most patients, only a few drugs are effective after chemotherapy. The present report describes the case of a 68-year-old man with advanced pulmonary LCNEC treated with cadonilimab and anlotinib after becoming resistant to PD-1 monoclonal antibody therapy and multiple chemotherapies.

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Article Synopsis
  • - This study explores a new reaction in Sonogashira coupling where both dehalogenation and hydrogenation occur simultaneously, specifically using hexahalogenobenzenes (CX, where X = I or Br).
  • - Researchers synthesized a bulky terminal alkyne to analyze how different reaction conditions affect the DHH reaction, later testing a less hindered alkyne to see its impact on the process.
  • - The outcome produced two new aromatic polyynes, and their photophysical properties were analyzed, contributing valuable insights into the reactions involving sterically hindered alkynes and polyhalogenated aromatic compounds.
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Organic-inorganic hybrid perovskites have been recognized as potential candidates in direct X-ray detectors and have triggered tremendous interest in the past years. The blade coating method meets the requirements of large area and low cost for perovskite X-ray detectors, while the low compactness resulting from solvent evaporation limits the charge collection efficiency (CCE) and device sensitivity. Most of the reports are focused on the melioration of perovskite films to increase device sensitivity; there are still problems of low CCE.

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Prcis: This research presents the burden and clinical characteristics of NVG in Zhongshan Ophthalmic Center, employing the most extensive sample size and the longest uninterrupted temporal duration so far, which may provide a theoretical reference for the effective prevention and diagnosis of NVG.

Purpose: To summarize the burden and clinical characteristics of neovascular glaucoma (NVG) in a major tertiary care center in China.

Methods: The clinical data of NVG patients in Zhongshan Ophthalmic Center (ZOC) between 2012 and 2021 were collected retrospectively, including their age, sex, the affected eye, best-corrected visual acuity (BCVA), intraocular pressure (IOP), clinical stage and etiology.

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Background: The South West Thames Centre for Genomics implemented a wider diagnostic Next Generation Sequencing (NGS) gene panel for eligible cancer patients undergoing diagnostic testing whilst restricting data analysis and reporting for BRCA1/BRCA2/PALB2/CHEK2 1100delC only as per contemporaneous guidelines. This study investigated the cost-utility of reanalyzing existing diagnostic grade extended panel data for truncating germline pathogenic variants (GPVs) in known moderate risk cancer susceptibility genes (CSGs) and performing follow-up genetic testing for first-degree relatives if patients have an identified CSG allele.

Methods: Reanalysis of existing NGS data was undertaken in 889 samples from cancer patients contemporaneously eligible through the NHS England National Genomic Test Directory (NGTD) codes R207 (ovarian) or R208 (breast) who had tested negative for BRCA1/BRCA2/PALB2 and CHEK2 1100delC founder variant.

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Studies have shown that motor-cognitive dual task can greatly improve motor/cognitive function. However, the therapeutic effect of motor-cognitive dual task is still limited. How to improve dual-task performance is the key to solving this problem.

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Background: This study aimed to investigate the difference between cycloplegic and noncycloplegic refraction and evaluate the pseudomyopia prevalence in Chinese preschool children during the outbreak of COVID-19.

Methods: A cross-sectional study was conducted in the Tongzhou District of Beijing, China. Refractive error was measured under both noncycloplegic and cycloplegic conditions with autorefraction.

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Drought is one of the vital meteorological disasters that influence crop growth. Timely and accurately estimating the drought dynamics of crops is valuable for decision-maker to formulate scientific management measures of agricultural drought risk. In this study, the evapotranspiration and drought dynamics of winter wheat from 1981 to 2020 in the Huang-Huai-Hai (HHH) region of China were evaluated based on long-term multi-source observation data.

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Fms-like tyrosine kinase 3 (FLT3) mutations, present in over 30% of acute myeloid leukemia (AML) cases and dominated by FLT3-internal tandem duplication (FLT3-ITD), are associated with poor outcomes in patients with AML. While tyrosine kinase inhibitors (TKIs; e.g.

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Recombinant adeno-associated virus (rAAV) has emerged as a prominent vector for in vivo gene therapy, owing to its distinct advantages. Accurate determination of the rAAV genome titer is crucial for ensuring the safe and effective administration of clinical doses. The evolution of the rAAV genome titer assay from quantitative PCR (qPCR) to digital PCR (dPCR) has enhanced accuracy and precision, yet practical challenges persist.

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Currently, adeno-associated virus (AAV) is one of the primary gene delivery vectors in gene therapy, facilitating long-term gene expression. Despite being imperative, it is incredibly challenging to precisely assess AAV particle distribution according to the sedimentation coefficient and identify impurities related to capsid structures. This study performed the systematic methodological validation of quantifying the AAV empty and full capsid ratio.

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Recombinant proteins are gaining increasing popularity for treating human diseases. The clinical effectiveness of recombinant proteins is directly related to their biological activity, which is an important indicator in drug development and quality control. However, certain recombinant proteins have unclear or complex signal pathways, making detecting their activity in vitro difficult.

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Efficient detection of single optical centres in solids is essential for quantum information processing, sensing and single-photon generation applications. In this work, we use radio-frequency (RF) reflectometry to electrically detect the photoionisation induced by a single Er ion in Si. The high bandwidth and sensitivity of the RF reflectometry provide sub-100-ns time resolution for the photoionisation detection.

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Acute lymphoblastic leukemia (ALL) is one of the most common malignant tumor types of the circulatory system. Dexamethasone (DEX) acts on the glucocorticoid (GC) receptor (GR) and is a first-line chemotherapy drug for ALL. However, long-term or high-dose applications of the drug can not only cause adverse reactions, such as osteoporosis and high blood pressure, but can also cause downregulation of GR and lead to drug resistance.

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A nitrogen-vacancy center based scanning magnetic microscope can be used to characterize magnetics at the nanoscale with high sensitivity. This paper reports a field-programmable-gate-array based hardware system that is designed to realize control and signal readout for fast scanning magnetic imaging with a nitrogen-vacancy center. A 10-channel 1 Msps @ 20 bit analog signal generator, a 12-channel 50 ps resolution pulse generator, a 300 Msps @ 16 bit lock-in amplifier with proportional integral derivative control function, and a 4-channel 200 Msps counter are integrated on the platform.

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Exposure to child maltreatment (CM), and parental domestic violence and abuse (DVA), impose considerable adverse life outcomes in both the short and long term, yet, the extent and effects of their co-occurrence on outcomes have not been comprehensively quantified. This study describes the analysis of data from the Avon Longitudinal Study of Parents and Children, quantifying the prevalence of CM, parental DVA, co-occurrence rates, and the impact of different combinations of childhood exposures on life outcomes (health, economic, and likelihood of perpetrating intimate partner violence as a young person). Childhood exposure prevalences were estimated at 41.

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Background: The Rhizophoraceae family comprises crucial mangrove plants that inhabit intertidal environments. In China, eight Rhizophoraceae mangrove species exist. Although complete chloroplast (Cp) genomes of four Rhizophoraceae mangrove plants have been reported, the Cp genomes of the remaining four species remain unclear, impeding a comprehensive understanding of the evolutionary history of this family.

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Synopsis of recent research by authors named "Xi Qin"

  • Author Xi Qin's recent research includes advancements in various scientific fields, with a notable focus on chemical reactions such as simultaneous dehalogenation and hydrogenation in Sonogashira coupling, aimed at improving synthetic efficiency in organic compounds.
  • Additionally, Qin has explored the enhancement of sensitivity in perovskite X-ray detectors through innovative electrode designs and grain reconstruction methods, emphasizing the importance of charge collection efficiency in these devices.
  • Xi Qin's work further extends to clinical research, highlighting the prevalence and characteristics of neovascular glaucoma in a major Chinese healthcare center and investigating economic evaluations of genetic testing protocols for cancer patients, showcasing the intersection of health and genomic science.

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