Publications by authors named "Jiayu Yan"

Background: Metastasis is the primary cause of mortality in small cell lung cancer (SCLC), with the liver being a predominant site for distal metastasis. Despite this clinical significance, mechanisms underlying the interaction between SCLC and liver microenvironment, fostering metastasis, remain unclear.

Methods: SCLC patient tissue array, bioinformatics analysis were performed to demonstrate the role of periostin (POSTN) in SCLC progression, metastasis, and prognosis.

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Purpose: To investigate the clinical characteristics and surgical management of children with Burkitt's lymphoma (BL) involving the gastrointestinal tract.

Methods: A retrospective analysis was conducted on 87 pediatric patients diagnosed with BL involving the gastrointestinal tract and treated surgically at Beijing Children's Hospital (2008-2022). All patients were histopathologically confirmed with BL and diagnosed with gastrointestinal involvement through imaging studies and surgery.

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Article Synopsis
  • Diabetic patients experience delayed wound healing in the mouth due to poor blood vessel formation from endothelial dysfunction.
  • A new light-responsive hydrogel made with sulfated chitosan (SCS), alginate Methacryloyl (AlgMA), and acrylamide (AM) has been developed to improve healing in these patients.
  • This hydrogel not only promotes blood vessel growth by positively affecting the behavior of endothelial cells and macrophages in high-glucose environments but also enhances the local blood supply, aiding in the repair of oral defects.
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Purpose: This study aimed to compare the differences in postoperative complications and long-term bowel function outcomes between patients with rectosigmoid Hirschsprung disease (HD) who underwent transanal endorectal pull-through (TEPT) beyond infancy (age> 1 year of age) and those during infancy (≤ 1 year of age).

Methods: All patients with rectosigmoid HD at Beijing Children's Hospital between January 2011 and December 2020 were analyzed retrospectively. They were divided into two groups based on age at TEPT: group A was defined as patients who performed TEPT beyond infancy (age>1 year of age), and group B as patients who performed TEPT during infancy (age ≤ 1 year of age).

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Article Synopsis
  • The aging process and disease progression can cause normal cells to suffer stress, leading to damage and the activation of cellular senescence, which significantly affects aging and disease rates.
  • Cellular senescence involves irreversible cell cycle arrest, with key players like p21 and p16 being crucial markers; recent studies reveal distinct roles for p21 and p16, influencing different cell populations and their functions.
  • The article discusses how understanding p21-dependent cellular senescence could lead to new therapies for aging and diseases like metabolic and cardiovascular disorders, emphasizing the need for targeted interventions to manage senescent cells effectively.
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With significant advancements in understanding gene functions and therapy, the potential misuse of gene technologies, particularly in the context of sports through gene doping (GD), has come to the forefront. This raises concerns regarding the need for point-of-care testing of various GD candidates to counter illicit practices in sports. However, current GD detection techniques, such as PCR, lack the portability required for on-site multiplexed detection.

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Background: Phosphorus is a macronutrient necessary for plant growth and development and its availability and efficient use affect crop yields. Leaves are the largest tissue that uses phosphorus in plants, and membrane phospholipids are the main source of cellular phosphorus usage.

Results: Here we identify a key process for plant cellular phosphorus recycling mediated by membrane phospholipid hydrolysis during leaf senescence.

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T cells suffer from long-term antigen stimulation and insufficient energy supply, leading to a decline in their effector functions, memory capabilities, and proliferative capacity, ultimately resulting in T cell exhaustion and an inability to perform normal immune functions in the tumor microenvironment. Therefore, exploring how to restore these exhausted T cells to a state with effector functions is of great significance. Exhausted T cells exhibit a spectrum of molecular alterations, such as heightened expression of inhibitory receptors, shifts in transcription factor profiles, and modifications across epigenetic, metabolic, and transcriptional landscapes.

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Heavy metal ion pollution poses significant risks to human health and ecological systems, and its monitoring is important. A sensitive and accurate surface-enhanced Raman spectroscopy (SERS) detection assay for Hg was developed using Au@Ag/COF substrates and Y-shaped DNA labeled with two Raman reporters. The Au@Ag NPs in the COF produced robust and uniform E-fields, improving their detection reproducibility.

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Purpose: To compare the clinical characteristics, surgical management and prognosis of mesenteric lymphatic malformations (ML) and omental lymphatic malformations (OL) in children.

Methods: This retrospective study included 148 ML patients and 53 OL patients who underwent surgical treatment at two centers between January 2016 and December 2022. Details about the patients' clinical characteristics, cyst characteristics, preoperative complications, surgical methods, and prognosis were retrieved and compared.

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To compare the clinical outcomes between total transanal endorectal pull-through (TTEPT) and laparoscopic-assisted transanal endorectal pull-through (LTEPT) in children with rectosigmoid Hirschsprung's disease. A retrospective study was conducted to compare patients with rectosigmoid Hirschsprung's disease who underwent TTEPT or LTEPT at Beijing Children's Hospital between January 2016 and June 2021. Clinical details were collected from medical records.

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A challenge facing the chlor-alkali process is the lack of electrocatalyst with high activity and selectivity for the efficient industrial production of chlorine. Herein the authors report a new electrocatalyst that can generate multi-interface structure by in situ growth of graphdiyne on the surface of cobalt oxides (GDY/CoO), which shows great potential in highly selective and efficient chlorine production. This result is due to the strong electron transfer and high density charge transport between GDY and CoO and the interconversion of the mixed valence states of the Co atoms itself.

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Background: Actinic keratosis (AK) is a precancerous lesion that occurs in areas that are chronically exposed to sunlight and has the potential to develop into invasive cutaneous squamous cell carcinoma (cSCC). We investigated the efficacy of 20 % 5-aminolevulinic acid-photodynamic therapy (ALA-PDT) with LED red light for the treatment of AK in Chinese patients by examining changes in dermoscopic features, histopathology and fluorescence after treatment.

Methods: Twenty-eight patients with fourty-six AK lesions from March 2022 to September 2023 were treated with 20 % ALA, and 3 h later, they were irradiated with LED red light (80-100 mW/cm) for 20 min.

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Oral lichen planus (OLP) was a chronic inflammatory disease of unknown etiology with a 1.4% chance of progressing to malignancy. However, it has been suggested in several studies that immune system disorders played a dominant role in the onset and progression of OLP.

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Background: It is well known that recurrent perianal abscesses (PAs) and fistula-in-ano (FIA) are the main causes of therapy failure following incision and drainage (I&D) for PAs. But few studies have focused on the risk factors for therapy failure after I&D for PAs in children. In this study, we retrospectively examine the risk factors for therapy failure after I&D for PAs in children in a pediatric tertiary care institution.

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Sepsis-induced acute respiratory distress syndrome (ARDS) poses a grave danger to life, resulting from sepsis-induced multi-organ failure. Although ferroptosis, a form of iron-dependent lipid peroxidative cell death, has been associated with sepsis-induced ARDS, the specific mechanisms are not fully understood. In this study, we utilized WGCNA, PPI, friends analysis, and six machine learning techniques (Lasso, SVM, RFB, XGBoost, AdaBoost, and LightGBM) to pinpoint STAT3 as a potential diagnostic marker.

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From the perspective of interactions in the human-animal-ecosystem, the study and control of pathogenic bacteria that can cause disease in animals and humans is the core content of "One Health". In order to test the effect of human disturbance (HD) on the health risk of pathogenic antibiotic-resistant bacteria (PARBs) to wild animals and transfer risk of the PARBs from wild animals to humans, golden snub-nosed monkeys () were used as sentinel animals. Metagenomic analysis was used to analyze the characteristics of PARBs in the gut microbiota of golden snub-nosed monkeys.

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Article Synopsis
  • Phosphorus is crucial for plant growth, with a significant portion used to create membrane phospholipids, and the study focuses on the role of NON-SPECIFIC PHOSPHOLIPASE C4 (NPC4) in rapeseed (Brassica napus).
  • Altering levels of NPC4 affects seed production; plants lacking NPC4 showed more phospholipids and less growth, while those overexpressing it had lower phospholipid levels and better growth and seed yield.
  • NPC4 is shown to break down specific lipids to release phosphate, which enhances growth in phosphate-poor conditions, and impacts the expression of genes related to lipid metabolism and phosphate transport in the plants.
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Researchers should be aware that hair growth cycle drives prominent molecular, cellular, and morphological changes to the entire skin. Thus, hair growth constitutes a major experimental variable that influences the interpretation of dermatological studies. Hair growth in mice is neither asynchronous nor fully synchronized; rather, it occurs in waves that dynamically propagate across the skin.

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Graphdiyne, a sp/sp -cohybridized two-dimensional all- carbon material, has many unique and fascinating properties of alkyne-rich structures, large π conjugated system, uniform pores, specific unevenly-distributed surface charge, and incomplete charge transfer properties provide promising potential in practical applications including catalysis, energy conversion and storage, intelligent devices, life science, photoelectric, etc. These superior advantages have made graphdiyne one of the hottest research frontiers of chemistry and materials science and produced a series of original and innovative research results in the fundamental and applied research of carbon materials. In recent years, considerable advances have been made toward the development of graphdiyne-based multiscale catalysts for nitrogen fixation and ammonia synthesis at room temperatures and ambient pressures.

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The illicit utilization of performance-enhancing substances, commonly referred to as doping, not only infringes upon the principles of fair competition within athletic pursuits but also poses significant health hazards to athletes. Doping control analysis has emerged as a conventional approach to ensuring equity and integrity in sports. Over the past few decades, extensive advancements have been made in doping control analysis methods, catering to the escalating need for qualitative and quantitative analysis of numerous banned substances exhibiting diverse chemical and biological characteristics.

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Objective: The purpose of this study was to analyze the outcomes of the combination of ultrasound (US)-guided percutaneous external drainage and subsequent definitive operation to manage complicated choledochal cyst in children.

Methods: This retrospective study included 6 children with choledochal cyst who underwent initial US-guided percutaneous external drainage and subsequent cyst excision with Roux-en-Y hepaticojejunostomy between January 2021 and September 2022. Patient characteristics, laboratory findings, imaging data, treatment details, and postoperative outcomes were evaluated.

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Unlabelled: The purpose of this study is to evaluate the clinical characteristics and prognosis of primary hepatolithiasis in hospitalized children. This retrospective cohort study included 106 hospitalized patients with primary hepatolithiasis at Beijing Children's Hospital. Clinical data were derived from electronic inpatient (2010-2021) and outpatient (2016-2021) medical records.

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