Publications by authors named "Xiangyu Ma"

Background: Medication adjustment after deep brain stimulation (DBS) of the subthalamic nucleus (STN) in patients with Parkinson's disease (PD) may influence visual function. However, no clinical trials have been designed specifically to investigate this effect.

Objectives: To compare the effects of levodopa-equivalent daily dose (LEDD) reduction and non-reduction on visual function in patients with Parkinson's disease (PD) following STN-DBS.

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Background And Purpose: Magnetic resonance-guided adaptive radiotherapy (MRgART) may improve the efficacy of large brain metastases (BMs)(≥2 cm), whereas the workflow requires optimized. This study develops a two-stage, personalized deep learning auto-segmentation (DLAS) model to assist online delineation of large BMs.

Materials And Methods: Multi-sequences images from 177 BMs were trained to develop the basic DLAS model.

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The objective of this study is to quantitatively compare the weight loss effects of glucagon-like peptide-1 receptor agonists (GLP-1RAs) in adult patients with no diabetes and type 2 diabetes (T2D). PubMed, Cochrane Central Register of Controlled Trials (CENTRAL), and Embase have been used as data sources from database inception to January 6, 2024. A total of 137 trials, encompassing 310 treatment arms, 17 GLP-1RAs, and 56,683 patients, were included in the analysis.

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Introduction: Diabetes mellitus often leads to bone metabolism disorders, hindering bone regeneration and delaying the healing of bone defects. β-Ecdysone, a plant-derived hormone known for its wide range of physiological activities, possesses hypoglycemic effects and promotes osteogenic differentiation. This study developed a composite PLGA slow-release scaffold loaded with β-ecdysone to enhance its bioavailability through topical administration and to investigate its potential to heal diabetic bone defects.

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Introduction: Lung function has been associated with cognitive decline and dementia, but the extent to which lung function impacts brain structural changes remains unclear. We aimed to investigate the association of lung function with structural macro- and micro-brain changes across mid- and late-life.

Methods: The study included a total of 37 164 neurologic disorder-free participants aged 40-70 years from the UK Biobank, who underwent brain MRI scans 9 years after baseline.

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The association between microRNAs and various diseases, especially cancer, has been established in recent years, indicating that miRNAs can potentially serve as biomarkers for these diseases. Determining miRNA concentrations in biological samples is crucial for disease diagnosis. Nevertheless, the stem-loop reverse transcription quantitative PCR method, the gold standard for detecting miRNA, has great challenges in terms of high costs and enzyme limitations when applied to clinical biological samples.

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A highly sensitive and selective electrochemical biosensor was developed for the detection of kanamycin using a core-hollow-shell structured peroxidase-mimic nanozyme, CHS-Fe₃O₄@@ZIF-8. The synthesized CHS-FeO@@ZIF-8 was characterized with scanning electron microscopy, transmission electron microscopy, and X-ray photoelectron spectroscopy. It was found that the CHS-FeO@@ZIF-8 exhibits excellent peroxidase-like activity due to  its ultra-thin hollow layer.

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Utricle is an important vestibular sensory organ for maintaining balance. 3,3'-iminodipropionitrile (IDPN), a prototype nitrile toxin, has been reported to be neurotoxic and vestibulotoxic, and can be used to establish an damage model of vestibular dysfunction. However, the mechanism of utricular HCs damage caused by IDPN is unclear.

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Leukemia is a type of blood cancer characterized by the uncontrolled growth of abnormal cells in the bone marrow, which replace normal blood cells and disrupt normal blood cell function. Timely and personalized interventions are crucial for disease management and improving survival rates. However, many patients experience relapse following conventional chemotherapy, and increasing treatment intensity often fails to improve outcomes due to mutated gene-induced drug resistance in leukemia cells.

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Atrazine (ATZ), a widely used triazine herbicide, has been shown to disrupt reproductive development in organisms. Melatonin (MLT) is a natural hormone and has been shown to have strong antioxidant properties. Due to its lipophilicity, it can cross biological barriers freely and act on germ cells directly.

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Atrazine (ATR) is a widespread environmental herbicide that seriously affects agricultural work and human safety. Melatonin (MLT) as an endogenous neuroendocrine hormone is widely found in animals and plants, which have antioxidant and anti-inflammatory effects. Pink1/Parkin-mediated mitophagy keeps normal physiological processes by degrading damaged mitochondria in cells.

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The class C orphan G-protein-coupled receptor (GPCR) GPR156, which lacks the large extracellular region, plays a pivotal role in auditory function through G. Here, we firstly demonstrate that GPR156 with high constitutive activity is essential for maintaining auditory function, and further reveal the structural basis of the sustained role of GPR156. We present the cryo-EM structures of human apo GPR156 and the GPR156-G complex, unveiling a small extracellular region formed by extracellular loop 2 (ECL2) and the N-terminus.

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Article Synopsis
  • - The study evaluates the effectiveness of a deep learning-based AI model for automatically delineating clinical target volume (CTV) and organs at risk (OARs) in lung cancer patients receiving postoperative radiotherapy (PORT), addressing the challenges of manual delineation.
  • - A comparison was made among three contouring techniques: unmodified AI auto-segmentation, fully manual delineation by junior residents, and AI-assisted delineation, with the latter proving to be the most accurate and efficient according to various metrics.
  • - Results showed that AI-assisted delineation significantly outperformed both unmodified AI and manual methods in terms of accuracy, leading to improved consistency in OAR delineation and overall contouring effectiveness.
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Article Synopsis
  • - Chronic kidney disease (CKD) is a significant public health issue in China, particularly impacting women, and the study investigates genetic factors affecting renal function using a more accurate measurement method, eGFR based on both creatinine and cystatin C.
  • - A Genome-Wide Association Study (GWAS) involving 1,983 Chinese women analyzed over 3.8 million genetic variants to explore their relationship with eGFRcr-cys, revealing one significant locus and two new suggestive loci linked to renal function.
  • - The research identified three critical genetic variants associated with eGFRcr-cys, providing new insights into the biological mechanisms affecting kidney health and potential avenues for better diagnoses and treatments for CKD in the
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Background: Nanozyme is a kind of biomimetic enzyme with unique properties and catalytic function of nanomaterials. Various nanozymes have been applied in the development of visual biosensors because of its excellent stability and availability. Nevertheless, the current applications of nanozymes primarily focus on colorimetric sensing based on color changes, which is susceptible to external factors interference including sample solution color and ambient light.

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Small extracellular vesicles (sEVs) act as a critical mediator in intercellular communication. Compared to sEVs derived from in vitro sources, tissue-derived sEVs can reflect the in vivo signals released from specific tissues more accurately. Currently, studies on the role of sEVs in the cochlea have relied on studying sEVs from in vitro sources.

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The integration of polylactic acid (PLA) fabrics with bio-based flame retardants and conductive MXene addresses the requirements for safe sustainable development and electromagnetic interference (EMI) shielding. The dehydration and carbonization of phytic acid (PA) and polyethylenimine (PEI) were facilitated by employing 3-glycidyl oxy propyl trimethoxsilane (GPTMS) as an organic crosslinking agent, which was covalently bonded to both the flame retardants and the MXene conductive layer. The prepared multifunctional PLA fabric, designated as PA-PEI-MXene-60, exhibits a high Limiting Oxygen Index (LOI) of 35.

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Article Synopsis
  • Atrazine (ATZ), a common herbicide, negatively impacts mitochondrial function and lipid metabolism in the liver, leading to potential health risks.
  • Melatonin (MLT), a natural hormone, shows promise in protecting against the harmful effects of ATZ by improving mitochondrial function and lipid metabolism.
  • In laboratory studies, MLT helped restore important proteins and improve fatty acid utilization, suggesting it may counteract ATZ-induced disruptions in liver cells without directly affecting overall mitochondrial function.
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The objective of this study was to enhance the membrane permeability and anticancer effectiveness of (20)-protopanaxadiol (PPD) by introducing triphenylphosphonium into the OH group at the C-3 site. This study shows that the anti-proliferation activity of CTPPPPD, with an IC50 value of 1.65 ± 0.

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Preserving pulp viability and promoting pulp regeneration in pulpitis have attracted widespread attention. Restricted by the oxidative stress microenvironment of dental pulpitis, excessive reactive oxygen and nitrogen species (RONS) trigger uncontrolled inflammation and exacerbate pulp tissue destruction. However, modulating redox homeostasis in inflamed pulp tissue to promote pulp regeneration remains a great challenge.

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Background: NOD-like receptor protein 3 (NLRP3) inflammasome activation is indispensable for atherogenesis. Mitophagy has emerged as a potential strategy to counteract NLRP3 inflammasome activation triggered by impaired mitochondria. Our previous research has indicated that dihydromyricetin, a natural flavonoid, can mitigate NLRP3-mediated endothelial inflammation, suggesting its potential to treat atherosclerosis.

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Background: Microvascular decompression (MVD) is a well-established and effective treatment for primary trigeminal neuralgia (TN). Endoscopy has been implemented to provide a comprehensive view of neurovascular conflict and minimizes the damages of brain retraction during MVD.

Objectives: To preliminarily evaluate the surgical safety and efficacy of fully endoscopic microvascular decompression (EMVD) for primary TN with surgeon performing two-hand manipulation and assistant holding endoscope.

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Microvascular decompression (MVD) is the preferred treatment for hemifacial spasm (HFS) and trigeminal neuralgia (TN), and fully endoscopic microvascular decompression (E-MVD) has been widely discussed in recent years. Considering the endoscopic diving technique used in endoscopic transsphenoidal pituitary adenoma resection, we developed the endoscopic semidiving technique. This technique involves preserving some cerebrospinal fluid (CSF) and positioning the endoscope at an appropriate distance from it; the potential advantages include reducing cerebellar retraction, accurately identifying the responsible vessels and minimizing mechanical damage.

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NLRC5, the largest member of the nucleotide-binding and oligomerization domain (NOD)-like receptor (NLR) family, has been reported to participate in the regulation of immune function and is associated with chronic inflammatory diseases. However, the biological function of NLRC5 in hepatocellular carcinoma (HCC) has not been fully demonstrated. The aim of this study is to evaluate NLRC5 expression in the tumor tissues of HCC patients undergoing surgical treatment, assess its prognostic value, and explore its relationship with critical immune-related molecules within the tumor microenvironment.

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