Publications by authors named "Ya-feng Liu"

Sesquiterpenes constitute the principal components of the genus , encompassing guaiane, germacrane, eudesmane, and polymer sesquiterpene lactones types. These secondary metabolites exhibit diverse pharmacological activities, including antitumor, antibacterial, anti-inflammatory, antiviral, antioxidant, hepatoprotective, and neuroprotective effects. Through a comprehensive literature search of the Web of Science, PubMed, SciFinder, and CNKI databases, it was discovered that there are as many as 145 main sesquiterpenoids in the genus .

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The accumulation of heavy metals in river and lake sediments in basins seriously threatens ecological safety and human health. To manage the basin effectively, it is crucial to understand pollution levels and identify and quantify the sources and risks of heavy metals in rivers and lakes separately for targeted control. In this study, 34 sediment samples were collected from the Dianchi Basin, China, and the pollution, sources, and risks in the river-lake system sediments were systematically analysed for cadmium (Cd), chromium (Cr), arsenic (As), mercury (Hg), lead (Pb), copper (Cu), zinc (Zn), and nickel (Ni).

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Introduction: Prolonged disorders of consciousness (pDoC) are a catastrophic condition following brain injury with few therapeutic options. Transcutaneous auricular vagal nerve stimulation (taVNS), a safe, non-invasive intervention modulating thalamo-cortical connectivity and brain function, is a possible treatment option of pDoC. We developed a protocol for a randomised controlled study to evaluate the effectiveness of taVNS on consciousness recovery in patients with pDoC (TAVREC).

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Background: Sepsis is a systemic inflammatory disease, and Brevilin A (BA) has a powerful anti-inflammatory effect. However, whether BA has a similar effect on septic cardiomyopathy remains unclear. This study aimed to investigate the effect and mechanism of BA in septic cardiomyopathy.

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  • * These sensors have broadened their application beyond traditional uses, being utilized in wearable tech, medical devices, smart pillows, and even brain-computer interfaces.
  • * The paper reviews current technologies, materials, and prep methods for flexible tactile sensors, highlights their various applications, and addresses existing challenges while suggesting future directions for development.
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Background: Massive intragastric clotting (MIC) makes endoscopic therapy difficult in patients with acute upper gastrointestinal bleeding. Literature data on how to address this problem are limited. Here, we report on a case of massive stomach bleeding with MIC that was successfully treated endoscopically using an overtube of single-balloon enteroscopy.

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To investigate the role of IL-18 in the regulation of osteogenic differentiation in human bone marrow mesenchymal stem cells (hBMSCs). To assess whether IL-18 affects the osteogenic differentiation of hBMSCs through the c-MYC/SLC7A5 axis, IL-18 dose-response and time-course experiments were performed to evaluate its impact on osteogenic differentiation. To confirm osteogenic differentiation, alizarin red staining calcium measurement were performed.

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  • This study compares the effectiveness of two tissue reconstruction methods, the Anterolateral thigh (ALT) free flap and jejunal flap (JF), for patients suffering from pharyngoesophageal squamous cell carcinoma (PESCC) after radiotherapy failure.
  • Researchers analyzed data regarding defect sizes, operation times, blood loss, and postoperative complications, finding no significant differences in outcomes between the two methods.
  • Overall, ALT and JF produced similar results concerning complications like flap failure and dysphagia, suggesting that either flap can be used interchangeably in these cases.
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Inspired by chameleons' structural color regulation capability, a simple, but effective, swelling method is proposed for the first time to prepare an ionic polyacrylamide (PAAm) organogel for simultaneous tactile sensing and interactive color changing. The PAAm organogel obtained by swelling the PAAm scaffold in the dimethyl sulfoxide solution of organic electrochromic material (OECM) shows an extremely large stretchability with an elongation of 1600%, a supersoftness with a compressive modulus of 7.2 kPa, an excellent transmittance up to 90%, and a very fast response time of 0.

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Flexible vibration sensors can not only capture broad classes of physiologically relevant information, including mechano-vibration signatures of body processes and precision kinematics of core-body motions, but also detect environmental seismic waves, providing early warning to wearers in time. Spider is one of the most vibration-sensitive creatures because of its hairlike sensilla and lyriform slit structure. Here, a spider-inspired ultrasensitive flexible vibration sensor is designed and fabricated for multifunctional sensing.

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Objective: This study explored the effectiveness of a new inflammatory prognostic system, using preoperative neutrophil to lymphocyte ratio (NLR) to predict the postoperative survival rate of patients with sinonasal squamous cell carcinoma (SSCC).

Methods: Patients diagnosed with SSCC who undergone surgically treated without neoadjuvant therapy were included in the study between May 2008 and October 2017. Preoperative NLR is defined as: preoperative neutrophil/postoperative lymphocyte ratio.

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Background: The acellular dermal matrix (ADM) and turbinate flap (TF) have been widely used in the reconstruction of skull base defects. However, owing to the lack of reported data, the therapeutic effects have been controversial. The purpose of the present study was to compare the effect of the ADM and TF on cerebrospinal fluid (CSF) rhinorrhea after nasal endoscopic resection of a skull base tumor.

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BACKGROUND High-intensity focused ultrasound (HIFU) and plasma radiofrequency ablation (PRA) have been used to treat recurrent allergic rhinitis (AR); however, there is a lack of literature comparing the efficacy of these 2 methods. We assessed and compared the therapeutic effects of HIFU and PRA on recurrent AR. MATERIAL AND METHODS We enrolled 66 patients with recurrent AR at West China Hospital of Sichuan University.

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The aim of this study was to determine the risk factors for lower respiratory tract infection (LRTI) in children caused by tracheobronchial foreign body aspiration (TFBA).A total of 351 patients were retrospectively reviewed; all patients were diagnosed with TFBA at West China Hospital of Sichuan University from 2015 to 2017. Univariate analyses and multivariate analysis were used.

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Background: Nasal endoscopic surgery is widely used for nasal diseases, including sinusitis and tumors. However, scar hyperplasia, nasal irritation, scab, and nasal obstruction delay nasal mucosal recovery, with prolonged cleaning exacerbating the patient's financial burden. Here, we presented a novel approach for the treatment of nasal mucosal defects, termed acellular dermal matrix.

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Background: Many blood markers have been shown to predict the recurrence and survival of various malignancies, but the effects of surgery on the body's inflammatory levels may cause changes in these inflammatory markers. Therefore, in this study, we assessed the relationship between changes in platelet to lymphocyte ratio (PLR) and survival and recurrence in patients with T3-T4 laryngeal squamous cell carcinoma (LSCC).

Methods: Data of patients with T3-T4 HSCC were reviewed.

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Article Synopsis
  • Obstructive sleep apnea syndrome (OSAS) is prevalent but often goes untreated, making its evaluation and understanding challenging.* -
  • OSAS leads to widespread negative effects on health, prompting the use of diverse treatment approaches across different medical fields.* -
  • Oral treatment is highlighted as a crucial aspect in the research and therapy of OSAS, showcasing its significance in managing the condition.*
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  • * The innovative composite created in this study features reduced graphene oxide-coated glass fabric (RGO@GF) combined with silicone, providing both flexibility and high tensile strength, allowing it to maintain its structural integrity under forces exceeding 800 N.
  • * The RGO@GF/silicone composite not only shows exceptional strain sensitivity (gauge factor around 113) superior to typical metal-based sensors but also proves effective in real-world applications like monitoring wrist movements and breathing.
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  • - A new type of electronic cilia (EC) sensor is created using graphene-coated magnetic cilia arrays, which enhance flexibility and conductivity while maintaining magnetic properties.
  • - The EC sensor demonstrates high sensitivity (0.4% Pa for pressures up to 100 Pa) and excellent durability, remaining stable across 10,000 cycles in a frequency range of 0.1-10 Hz.
  • - This innovative sensor is effective in various applications like blood pulse monitoring and detecting pressure and magnetic fields, showcasing potential uses in healthcare, robotics, and advanced surgical tools.
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  • Primary Clear Cell Carcinoma (CCC) of the nasal cavity is a rare cancer that is often misdiagnosed as either benign or malignant lesions.
  • A case was reported involving a patient experiencing tears in the right eye, nasal obstruction, and bleeding, symptoms commonly associated with CCC.
  • Proper diagnosis relies on pathology and immunohistochemistry, while treatment usually includes surgery, radiotherapy, and chemotherapy.
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The task of feature selection is to find the most representative features from the original high-dimensional data. Because of the absence of the information of class labels, selecting the appropriate features in unsupervised learning scenarios is much harder than that in supervised scenarios. In this paper, we investigate the potential of locally linear embedding (LLE), which is a popular manifold learning method, in feature selection task.

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We introduce a more flexible optogenetics-based mapping system attached on a stereo microscope, which offers automatic light stimulation to individual regions of interest in the cortex that expresses light-activated channelrhodopsin-2 . Combining simultaneous recording of electromyography from specific forelimb muscles, we demonstrate that this system offers much better efficiency and precision in mapping distinct domains for controlling limb muscles in the mouse motor cortex. Furthermore, the compact and modular design of the system also yields a simple and flexible implementation to different commercial stereo microscopes, and thus could be widely used among laboratories.

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  • A novel method using TurborFlow online solid phase extraction (SPE) and liquid chromatography-tandem mass spectrometry (LC-MS/MS) has been developed for screening and confirming 88 veterinary drugs in milk from various families, achieving results in under 39 minutes.
  • The method includes sample dilution and ultrasonic extraction, followed by automated clean-up and detection using selected reaction monitoring mode (SRM), and has shown high reliability with R(2) values above 0.9930.
  • Validation results show limits of detection as low as 0.2-2.0 μg/kg, and overall recovery rates for spiked compounds range from 63.1% to 117.4%, demonstrating its effectiveness and potential
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