Publications by authors named "Ya-Nan Ma"

Alzheimer's disease (AD) is a progressive neurodegenerative disorder characterized by cognitive decline, memory loss, and functional impairments. Despite extensive research, its pathogenesis remains incompletely understood, and effective treatments are limited. This study explored the therapeutic potential of agarwood in AD by integrating network pharmacology, protein-protein interaction (PPI) network analysis, and single-cell expression analysis.

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Extrachromosomal DNA (ecDNA) refers to a class of circular, non-chromosomal DNA that has recently gained widespread attention due to its potential role in aging and neurodegenerative diseases. The generation of ecDNA is closely associated with processes such as double-strand breaks, micronuclei formation, and the breakage-fusion-bridge (BFB) cycle, all of which are integral to regulation of gene expression, genetic stability, and clonal evolution. In neurodegenerative diseases such as Alzheimer's disease, Parkinson's disease, and Huntington's disease, the aberrant formation of ecDNA is closely linked to defects in DNA repair, alterations in synaptic plasticity, and neuronal dysfunction.

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Achieving a balance between high selectivity and uptake is a formidable challenge for the purification of acetylene from mixtures with carbon dioxide, particularly when seeking to maximize both CH adsorption capacity and CH/CO separation selectivity in crystalline porous materials. In this study, leveraging the principles of reticular chemistry, we selected two tetracarboxylate-based linkers and combined them with Cu ions to synthesize two isoreticular dicopper paddle-wheel-based metal-organic frameworks (MOFs): Cu-TPTC (terphenyl-3,3',5,5'-tetracarboxylic acid, HTPTC) and Cu-ABTC (3,3,5,5-azobenzenetetracarboxylic acid, HABTC). The structural and sorption analyses revealed that Cu-ABTC, despite having slightly smaller pores due to the strategic replacement of a phenyl ring with an azo group between two tetratopic ligands, maintains high porosity compared to Cu-TPTC.

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Alzheimer's disease (AD) is a severe neurodegenerative disorder, and the current treatment options are limited. Mesenchymal stem cell-derived exosomes (MSC-Exos) have garnered significant attention due to their unique biological properties, showcasing tremendous potential as an acellular alternative therapy for AD. MSC-Exos exhibit excellent biocompatibility and low immunogenicity, enabling them to effectively cross the blood-brain barrier (BBB) and deliver therapeutic molecules directly to target cells.

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The global aging population has led to a significant rise in the prevalence of age-related non-communicable diseases such as dementia and other cognitive disorders. In 2019, there were 57.4 million people with dementia worldwide, and this number is projected to triple by 2050.

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Objective: To investigate the anti-tumor effects of cinobufacini (CINO) on hepatocellular carcinoma (HCC) induced by des-gamma-carboxy-prothrombin (DCP) and to uncover the underlying mechanisms.

Methods: The inhibitory effect of CINO on HCC cell proliferation was evaluated using the cell counting kit-8 method, and the apoptosis rate was quantified using flow cytometry. Immunofluorescence and Western blot analyses were used to investigate the differential expression of proteins associated with cell growth, apoptosis, migration, and invasion pathways after CINO treatment.

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As the population ages, the prevalence of dysphagia among older adults is a growing concern. Age-related declines in physiological function, coupled with neurological disorders and structural changes in the pharynx associated with aging, can result in weakened tongue propulsion, a prolonged reaction time of the submental muscles, delayed closure of the laryngeal vestibule, and delayed opening of the upper esophageal sphincter (UES), increasing the risk of dysphagia. Dysphagia impacts the physical health of the elderly, leading to serious complications such as dehydration, aspiration pneumonia, malnutrition, and even life-threatening conditions, and it also detrimentally affects their psychological and social well-being.

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Article Synopsis
  • APOE4 is a significant genetic risk factor for Alzheimer's disease, found in 60-80% of cases, affecting microglial function and lipid metabolism.
  • Research indicates that microglia with the APOE4 genotype accumulate lipid droplets, impairing their ability to clear harmful particles and disrupting their relationships with neurons.
  • The altered metabolic processes in these microglia, specifically in lipid metabolism and purinergic signaling, may play a crucial role in advancing Alzheimer's pathology.
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Exploring the tradeoff and synergy relationship among ecosystem services in the Yellow River Delta High-Efficiency Eco-Economic Zone is of great practical significance for regional ecosystem service function zoning and high-quality development. Using the InVEST model, spatial auto-correlation and trade-off synergism (ESTD) model, we analyzed the spatial and temporal variations of five ecosystem services (habitat quality, carbon storage, soil conservation, water conservation, and water purification), as well as their trade-off and synergistic relationships at the township scale from 2000 to 2020. The results showed that habitat quality, carbon storage, and nitrogen and phosphorus output decreased as a whole from 2000 to 2020, and soil conservation and water purification increased.

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  • * Neoadjuvant therapies are designed to shrink tumors and improve surgical outcomes before the operation, aiming to reduce the chances of cancer returning afterward.
  • * Research is focusing on advanced treatments, especially immune checkpoint inhibitors (ICIs) and combinations with other therapies like tyrosine kinase inhibitors (TKIs) and radiotherapy, which may improve patient survival rates and tackle treatment resistance.
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  • Research indicates that conversion therapy can successfully downstage unresectable hepatocellular carcinoma, allowing for radical surgery and significantly improving patient survival.
  • The success rates of conversion therapy can vary widely, from as low as 0.8% to as high as 60%, with combined locoregional and systemic treatments showing the most promise.
  • Despite its benefits, conversion therapy is associated with a higher risk of complications compared to direct surgery, highlighting the need for clear criteria to assess its efficacy and further research in this area.
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Currently, aeroplane images captured by camera sensors are characterized by their small size and intricate backgrounds, posing a challenge for existing deep learning algorithms in effectively detecting small targets. This paper incorporates the RFBNet (a coordinate attention mechanism) and the SIOU loss function into the YOLOv5 algorithm to address this issue. The result is developing the model for aeroplane and undercarriage detection.

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  • The study focuses on the development of zirconium-based metal-organic frameworks (MOFs) for efficient methane storage, addressing concerns about the stability of these materials despite their high capacity.
  • A new series of UiO-66 type Zr-MOFs were synthesized using amide-functionalized ligands and showed strong structural integrity and hydrolytic stability across a range of pH values.
  • The volumetric methane storage capacities of the new Zr-MOFs varied, with the highest performing variant displaying capacities of 187 cm³ at 298 K and 217 cm³ at 273 K under 80 bar pressure, demonstrating their potential for practical methane storage applications.
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  • - Sepsis can lead to serious complications like acute kidney injury (AKI), and this study investigates the role of circular RNA (circRNA) in septic AKI (SAKI), focusing on its regulatory mechanisms.
  • - Researchers analyzed 40 blood samples (20 from SAKI patients and 20 from healthy individuals) and identified numerous differentially expressed RNAs, forming co-expression networks that highlight interactions between circRNA, miRNA, and mRNA.
  • - The study's findings, which are the first of their kind, reveal key genes involved in SAKI and suggest new targets for treatment and understanding of the disease's causes.
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  • * It works by triggering metabolic and hormonal changes that promote cellular health, particularly through a process called hepatic autophagy, which helps maintain energy balance and protect against damage.
  • * IF influences various molecular pathways and cytokines that can enhance liver health and may offer new treatments for liver-related diseases like fatty liver disease and hepatitis.
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Aim: Confirm and compare the degree of associations of non-traditional lipid profiles and metabolic syndrome (MetS) in Chinese adolescents, determine the lipid parameter with better predictive potential, and investigate their discriminatory power on MetS.

Methods: Medical measurements, including anthropometric measurements and biochemical blood tests, were undergone among a total sample of 1112 adolescents (564 boys and 548 girls) aged from 13 to 18 years. Univariate and multivariate logistic regression analyses were applied for assessing the relationships between the levels of traditional/non-traditional lipid profiles and MetS.

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Background: The association between serum cystatin C levels and obesity has not been fully explored in adolescents. This study aimed to explore the association between serum cystatin C levels and obesity in adolescents of different sexes.

Methods: We conducted a cross-sectional study including 481 adolescents aged 14-17 years.

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Interactions between quantum systems and their environments may always result in inevitable decoherence. Isolation of the quantum system from the undesired environmental noise is a great challenge for ideal quantum information processing. Herein, based on a parallelly shaped control-target molecular nanomagnet structure, we report a novel strategy which decouples the target molecular device from its surrounding conduction baths.

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  • Jasmonate ZIM-domain (JAZ) proteins are key repressors in jasmonic acid signaling, influencing plant development, defense, and metabolism.
  • Seven unique McJAZ genes were identified in the Chinese herb L. through transcriptome analysis, displaying conserved structural features and diverse expression patterns, particularly in flowers.
  • Functional studies revealed their interaction with the JA receptor and responses to environmental stress, offering insights for genetic improvement strategies.
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Background: Coronary atherosclerosis and cognitive impairment are both age-related diseases, with similar risk factors. Coronary artery calcium (CAC), a marker of coronary atherosclerosis, may play a role in early detection of individuals prone to cognitive decline. This study aimed to investigate the relationship between CAC and cognitive function, and the capability of CAC to identify participants with a high risk of dementia in a Chinese community-based population.

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Artemisinin, a sesquiterpene lactone widely used in malaria treatment, was discovered in the medicinal plant Artemisia annua. The biosynthesis of artemisinin is efficiently regulated by jasmonate (JA) and abscisic acid (ABA) via regulatory factors. However, the mechanisms linking JA and ABA signalling with artemisinin biosynthesis through an associated regulatory network of downstream transcription factors (TFs) remain enigmatic.

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The use of the molecular spin state as a quantum of next-generation information technology is receiving impressive research attention, within which the fundamental issues include manipulating the phase transition between the spin-up and -down states and generating spin polarized current. The spinterface between ferromagnetic electrodes and a molecular bridge represents one of the most intriguing elements in this context. Herein, by means of the celebrated numerical renormalization group technique, we present an original way to realize spin reversal in a monomeric dimer.

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Sugar-acetic acid-ethanol-water mixture (SAEWM) trapping has initially shown the potential efficacy for monitoring or trapping insects. It is unknown how SAEWM-baited traps affect field number of oriental fruit moth (OFM), (Busck) (Lepidoptera: Tortricidae), the female/male ratio trapped, and the type of natural-enemy insects captured. This study investigated changes in seasonal population dynamics and diurnal flight rhythm of OFM, the number and female/male ratio of OFM and the numbers of and trapped by SAEWM in peach-apple mixed-planting orchards.

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Article Synopsis
  • - Recent studies on bone mineral density (BMD) and breast cancer (BC) risk yield inconsistent results, prompting further investigation.
  • - A meta-analysis of ten studies involving over 81,000 participants indicates that higher lumbar spine BMD is associated with a lower risk of BC, but no significant link was found for BMD at the femoral neck or hip.
  • - The overall conclusion is that there’s no clear relationship between BMD and BC risk; more prospective research is needed to clarify these findings.
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