Publications by authors named "Yanming Xu"

Objective: To explore whether CSF phosphorylated tau-181 (P-tau181) and total tau (T-tau) are associated with disease progression in early PD patients.

Methods: We analyzed 8-year longitudinal clinical data from 368 early, drug-naive PD patients and 185 matched controls from the Parkinson's Progression Markers Initiative cohort. CSF P-tau181 and T-tau were measured over 5 years, while CSF α-synuclein was measured over 3 years.

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Objective: To report and analyze a case of Juvenile neuronal ceroid lipofuscinosis (NCL) due to compound heterozygous variants of PPT1 gene.

Methods: A child who was admitted to the Department of Neurology of West China Hospital of Sichuan University in April 2021 due to "intellectual decline and behavioral abnormalities for more than 5 years and movement disorder for more than 1 year" was selected as the study subject. Clinical data of the child was collected.

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Background: Distal myopathies are genetic muscle disorders caused by mutations in various genes. A study found that mutations in adenylosuccinate synthetase-like 1 (ADSSL1) are associated with distal myopathy in nine patients from six unrelated families in South Korea. Previous research showed that affected individuals experienced distal muscle weakness starting in adolescence, along with mild facial muscle weakness, slightly elevated or normal serum creatine kinase (CK) levels, and the presence of a few rimmed vacuoles in muscle fibers or minimal chronic myopathic damage.

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Background: Resveratrol (RSVL) is a plant-derived polyhydroxyphenolic compound with excellent anticancer properties, alone or in combination with other chemotherapeutic drugs. However, the anticancer mechanism of RSVL is diverse and high concentrations are often required for RSVL to exert its anticancer effect, which would also adversely affect normal cells.

Purpose: The main objective of this study is to investigate the molecular mechanism of how non-cytotoxic concentrations of RSVL enhance the anticancer effect of cisplatin involving a newly identified RSVL-binding protein.

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Background: The pathogenesis of Alzheimer's disease (AD) is complex. Recent research suggests that AD patients have early disorders in brain cholesterol metabolism. Cholesterol and its derivatives accumulate in neurons, leading to p-Tau overproduction and synaptic dysfunction, initiating AD progression.

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Article Synopsis
  • Advanced biochar infused with magnesium oxide (MgO) shows great promise in reducing phosphate pollution, a key factor in eutrophication.
  • The MgO is effectively confined within a nitrogen pre-doped biochar (Mg/N-BC), resulting in a significant phosphate absorption capacity of 108.41 mg/g and a high absorption rate of 18.01 mg/g/h.
  • The study highlights that pre-doping with nitrogen helps shape the biochar structure, facilitating better MgO distribution, thus optimizing phosphate removal capabilities.
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Article Synopsis
  • * Methods: A cross-sectional study included 66 patients with probable MSA who underwent polysomnography to diagnose SRBD, along with various assessments to evaluate symptoms. A meta-analysis of existing studies was also performed to calculate SRBD prevalence.
  • * Results: Among the 66 MSA patients, 52 (78.8%) had SRBD. Although there were no significant demographic or symptom differences between MSA patients with and without SRBD, those with SRBD had higher rates of obstruct
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Drought stress is a critical environmental factor that significantly impacts plant growth and productivity. However, the transcriptome analysis of differentially expressed genes in response to drought stress in Abel. is still unclear.

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Background: Menkes Disease (MD) is a fatal X-linked recessive disorder caused by mutations in the ATP7A gene. Severe cases typically die before the age of three. Mild MD and occipital horn syndrome are variants of MD characterized by a less severe phenotype and longer survival.

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Increased nitrogen deposition is a key feature of global climate change, however, its effects on the structure and assembling mechanisms of the nitrogen-fixing bacteria present at the root surface remain to be elucidated. In this pursuit, we used NHNO to simulate nitrogen deposition in a 10-year-old plantation, and set up four deposition treatments, including control N0 (0 kg N hm a), low nitrogen N20 (20 kg N hm a), medium nitrogen N40 (40 kg N hm a) and high nitrogen N160 (160 kg N hm a). The results showed that nitrogen deposition affected the soil nitrogen content and the structure of the nitrogen-fixing bacterial community.

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Triple-negative breast cancer (TNBC) has negative expressions of ER, PR and HER2. Due to the insensitivity to both endocrine therapy and HER2-targeted therapy, the main treatment method for TNBC is cytotoxic chemotherapy. However, the curative effect of chemotherapy is limited because of the existence of acquired or intrinsic multidrug resistance.

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Layered double hydroxides (LDH) hold great promise as phosphate adsorbents; however, the conventional binary LDH exhibits low adsorption rate and adsorption capacity. In this study, Mg and La were chosen as binary metals in the synthesis of Mg-La LDH to enhance phosphate efficient adsorption. Different molar ratios of Mg to La (2:1, 3:1, and 4:1) were investigated to further enhance P adsorption.

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Article Synopsis
  • ALS is a severe neurodegenerative disease, and researchers found a specific genetic mutation (p.L700P) in the PCDHA9 gene among Chinese ALS patients.
  • They created mutant mice with this gene alteration, which showed symptoms like motor loss, muscle wasting, and early death, similar to human ALS.
  • The study also revealed that the mutation disrupts key cellular signaling pathways related to neuronal health and may identify PCDHA9 as a new potential gene linked to ALS.
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Background: Cerebral perivascular spaces are part of the cerebral microvascular structure and play a role in lymphatic drainage and the removal of waste products from the brain. Relationships of the number and location of such spaces with cognition are unclear.

Objective: To meta-analyze available data on potential associations of severity and location of perivascular spaces with cognitive performance.

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Article Synopsis
  • Electronic processors are hitting their speed limits, paving the way for faster optical processors, particularly through multifunctional all-optical logic gates (AOLGs) that offer significant speed advantages but face challenges in bandwidth and complexity.
  • The study presents a novel reconfigurable all-in-one broadband AOLG that can perform nine basic Boolean logic functions using liquid-metal Galinstan nanodroplet assemblies, which leverage unique properties for enhanced optical performance.
  • The research proposes a method for dynamic control of the optical properties in the AOLG, allowing for versatile logic function reconfiguration, which could lead to advancements in high-bandwidth all-optical circuits for efficient data processing in the future.
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Integrated on-chip femtosecond (fs) laser optoelectronic system, with photodetector as a critical component for light-electrical signal conversion, is a long-sought-after goal for a wide range of frontier applications. However, the high laser peak intensity and complicated nanophotonic waveguide structure of on-chip fs laser are beyond the detectability and integrability of conventional photodetectors. Therefore, flexible photodetector with the response on intense fs laser is in urgent needs.

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Insufficient carbon source has become the main limiting factor for efficient nitrogen removal in wastewater treatment. In this study, an intermittently-aerated activated sludge system with iron-chitosan (Fe-CS) beads addition was proposed for nitrogen removal from low C/N wastewater. By adding Fe-CS beads, partial nitrification-denitrification (PND) process and significant enrichment of Paracoccus (with ability of iron reduction/ammonium oxidation/aerobic denitrification) were observed in the reactor.

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Mitogen-activated protein kinase 15 (MAPK15) has been reported to be associated with several cancers. This study aimed to explore for the first time on the relationship between MAPK15 expression and cancer progression/drug responsiveness in ovarian carcinoma. To this end, MAPK15 expression level was examined by immunohistochemistry (IHC) staining of an ovarian tissue array (10 normal and 70 malignant samples).

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Background: While dietary factors have shown an association with Parkinson's disease (PD), the available data remains a subject of ongoing debate and controversy.

Aim: We sought to evaluate potential relationships between dietary consumption of nutrients and micronutrients and risk of PD in a large sample.

Methods: Cross-sectional data were retrospectively analyzed for 10,651 adults aged 40-80 years that had been collected in the US between 2007 and 2016 as a component of the nationwide National Health and Nutrition Examination Survey.

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Ubiquitin carboxyl-terminal hydrolase L1 (UCHL1) is highly expressed in smokers, but little is known about the molecular mechanism of UCHL1 in airway epithelium and its possible role in affecting extracellular matrix (ECM) remodelling in the underlying submucosa. Since cigarette smoking is a major cause of lung diseases, we studied its effect on UCHL1 expression and DNA methylation patterns in human bronchial epithelial cells, obtained after laser capture micro-dissection (LCM) or isolated from residual tracheal/main stem bronchial tissue. Targeted regulation of UCHL1 expression CRISPR/dCas9 based-epigenetic editing was used to explore the function of UCHL1 in lung epithelium.

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Background Aims: Peritoneal carcinomatosis (PC) from colorectal cancer (CRC) is a highly challenging disease to treat. Systemic chimeric antigen receptor (CAR) T cells have shown impressive efficacy in hematologic malignancies but have been less effective in solid tumors. We explored whether intraperitoneal (i.

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