1,622 results match your criteria: "Hunan 410000; Fuyang People's Hospital Linlin Zhang[Affiliation]"

Aims: Circular RNAs (circRNAs) are critical in the progression of ischemic acute kidney injury (AKI). Nevertheless, the specific functions and regulatory pathways of mmu_circ_0001388 and hsa_circ_0029470 remain elusive.

Methods: Real-time quantitative polymerase chain reaction (RT-qPCR) was utilized to assess the expression patterns of mmu_circ_0001388, hsa_circ_0029470, and miR-139b-3p.

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  • The study investigates the differences in blood microbiota between HIV-infected and uninfected patients suspected of having sepsis, using metagenomic next-generation sequencing (mNGS).
  • It analyzed 233 patients, revealing that HIV-infected individuals had a higher presence of mycobacterium, fungi, and viruses, while bacterial levels were lower compared to their uninfected counterparts.
  • Key findings highlighted elevated rates of non-tuberculous mycobacteriosis, Pneumocystis jirovecii, Talaromyces marneffei, and cytomegalovirus in HIV-infected patients, indicating significant disparities in their blood microbiota profiles.
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The accuracy of ZPW-2000 frequency shift signal demodulation is related to the safety and efficiency of high-speed trains. This paper proposed a kind of ZPW-2000 frequency-shift signal detection algorithm based on improved Relaxation algorithm (ZFSD-IR) to address the issue of low accuracy in detecting ZPW-2000 frequency shift signal under strong noise interference, as the traditional fast Fourier transform (FFT) spectrum analysis methods are susceptible to fence effects and spectrum leakage effects. Firstly, the principle of ZPW-2000 jointless track circuit was analyzed, and then the ideal and simplified models of ZPW-2000 frequency shift signal were established, respectively.

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Accurate detection of asphalt pavement distress is crucial for road maintenance and traffic safety. However, traditional convolutional neural networks usually struggle with this task due to the varied distress patterns and complex background in the images. To enhance the accuracy of asphalt pavement distress identification across various scenarios, this paper introduces an improved model named SMG-YOLOv8, based on the YOLOv8s framework.

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  • The study explores the use of back propagation neural network (BPNN) and convolutional neural network (CNN) models to predict the water quality index in the Hengyang region of Xiangjiang River Basin.
  • BPNN showed predictive capabilities but struggled with overfitting, which was mitigated by modifying it with particle swarm optimization (PSO) to improve parameter selection.
  • The CNN model outperformed both traditional BPNN and PSO-BPNN, exhibiting better fitting and prediction accuracy as indicated by lower root-mean-square error (RMSE) and mean absolute error (MAE) values.
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In patients with sepsis, neutrophil apoptosis tends to be inversely proportional to the severity of sepsis, but its mechanism is not yet clear. This study aimed to explore the mechanism of fatty acid binding protein 4 (FABP4) regulating neutrophil apoptosis through combined analysis of gut microbiota and short-chain fatty acids (SCFAs) metabolism. First, neutrophils from bronchoalveolar lavage fluid (BALF) of patients with sepsis-induced acute respiratory distress syndrome (ARDS) were purified and isolated RNA was applied for sequencing.

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Identification of SLC31A1 as a prognostic biomarker and a target for therapeutics in breast cancer.

Sci Rep

October 2024

Department of Emergency Medicine, The Affiliated Changsha Central Hospital, Hengyang Medical School, University of South China, 161 Shaoshan South Road, Changsha, 410000, China.

Copper-induced cell death is regulated through protein lipoylation, which is critical for gene expression and phenotypic regulation. Neverless, the role of Cuproptosis-related genes in breast cancer (BC) remains unknown. This study aimed to construct a prognostic signature based on the expression of Cuproptosis-related genes in order to guide the diagnosis and treatment for BC.

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  • The paper discusses a new approach called DMFGAN that uses deep learning to improve the quality of grape leaf disease images for better identification.
  • It introduces several innovative components, including a multifeature extraction block and a new discriminator design, aimed at enhancing image generation while reducing computing resource needs.
  • Results demonstrate that DMFGAN produces higher-quality and more diverse images with fewer parameters and mitigates common training issues like mode collapse compared to other generative adversarial networks.
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An enhanced deep learning method for the quantification of epicardial adipose tissue.

Sci Rep

October 2024

Department of Radiology, the Second Xiangya Hospital, Central South University, No. 139 Middle Renmin Road, Furong District, Changsha, 410000, China.

Article Synopsis
  • - Epicardial adipose tissue (EAT) is important in cardiovascular disease progression, but measuring its volume manually is tough and prone to errors.
  • - This study introduces a new deep learning method for EAT quantification using coronary computed tomography angiography (CCTA) that combines data-driven techniques with specific anatomical information.
  • - The automated method showed strong agreement with traditional manual measurements, achieving high accuracy for both 2D slices and 3D volumes, suggesting its potential value in clinical settings.
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  • Simulating double eyelid surgery outcomes is complex and often relies on elaborate 3D models, but recent studies have attempted simpler 2D methods that struggle with natural-looking results and manual image edits.
  • This research introduces an unsupervised generative model using a dataset of pre- and post-operative images, along with a novel attention-class activation map to improve image translation from single to double eyelids.
  • The new approach enhances the model's focus on the eyelid area and improves the accuracy of distinguishing real from generated images while preserving important features, proving to be more effective than previous methods in experimental tests.
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N4BP3 facilitates NOD2-MAPK/NF-κB pathway in inflammatory bowel disease through mediating K63-linked RIPK2 ubiquitination.

Cell Death Discov

October 2024

Department of Digestive Diseases, The Affiliated Changsha Central Hospital, Hengyang Medical School, University of South China, 161 Shaoshan Road, Changsha, 410000, China.

The NOD2 signaling pathway, which plays an important role in the mechanisms of inflammatory bowel disease (IBD) development, has been closely associated with ubiquitination. It was revealed in this study that NOD2 receptor activation could obviously affect the expression of 19 ubiquitination-related genes, with N4BP3 being the most prominently expressed and upregulated. In addition, N4BP3 knockdown was found to reduce the mRNA levels of MDP-induced inflammatory factors, while N4BP3 overexpression elevated their mRNA levels as well as the levels of phospho-ERK1/2, phospho-JNK, phospho-P38 and phospho-NF-κB P65 proteins.

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  • * The rise of machine algorithms, especially in deep learning and machine learning, offers new ways to analyze clinical data and improve prognostic assessments in liver cancer patients through identifying patterns.
  • * Key challenges remain in this field, such as integrating diverse clinical data, addressing ethical concerns, and ensuring the transparency of how these algorithms make decisions, which this paper aims to address through a systematic review.
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  • - The study investigates the causal relationship between low-density lipoprotein cholesterol (LDL-C) levels and different types of aneurisms, using statistical methods like Mendelian Randomization (MR) to analyze genetic data related to LDL-C-lowering targets.
  • - Results indicate that increased expression of the HMGCR gene significantly elevates the risk of aortic, thoracic, and abdominal aneurisms, with strong odds ratios showing a clear association.
  • - Additionally, after adjusting for factors like body mass index and smoking, similar positive associations were found for PCSK9 and CETP genes concerning the risk of various aortic aneurisms.
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Targeting HPV for the prevention, diagnosis, and treatment of Cervical Cancer.

J Mol Cell Biol

October 2024

Hunan Key Laboratory of Molecular Precision Medicine, Department of Gynecology & Department of Oncology, Xiangya Hospital, Central South University, Changsha 410000, China.

Article Synopsis
  • - Despite progress in cervical cancer screening and prevention, it remains a major public health concern, especially for women in low-income areas, primarily driven by high-risk strains of human papillomavirus (HPV).
  • - Integrating HPV testing with traditional screening methods improves the accuracy of cervical cancer detection, while various HPV-associated biomarkers provide insights into disease progression and personalized treatment options.
  • - The potential of HPV vaccines and new therapeutic strategies, alongside advanced research techniques like single-cell RNA sequencing and organoid models, holds promise for improving cervical cancer prevention, diagnosis, and management.
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  • The study investigates the effectiveness of IVF versus ICSI for couples dealing with isolated teratozoospermia, a sperm condition affecting fertility.
  • Conducted from January 2018 to December 2022, the research involved 433 couples, with 81 patients specifically diagnosed with isolated teratozoospermia.
  • Results indicated that both moderate and severe teratozoospermia patients had comparable success rates with IVF, and R-ICSI was only used when necessary, suggesting IVF is a viable treatment option for these cases.
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Ultra-Tough Dynamic Supramolecular Ion-Conducting Elastomer Induced Uniform Li Transport and Stabilizes Interphase Ensures Dendrite-Free Lithium Metal Anodes.

Angew Chem Int Ed Engl

January 2025

School of Chemistry, Xi'an Jiaotong University, Engineering Research Center of Energy Storage Materials and Devices, Ministry of Education, State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an, 710049, P.R. China.

Artificial polymer solid electrolyte interphases (SEIs) with microphase-separated structures provide promising solutions to the inhomogeneity and cracking issues of natural SEIs in lithium metal batteries (LMBs). However, achieving homogeneous ionic conductivity, excellent mechanical properties, and superior interfacial stability remains challenging due to interference from hard-phase domains in ion transport and solid-solid interface issues with lithium metal. Herein, we present a dynamic supramolecular ion-conducting poly (urethane-urea) interphase (DSIPI) that achieves these three properties through modulating the hard-phase domains and constructing a composite SEI in situ.

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Article Synopsis
  • Lead-based perovskites are effective solar materials due to high energy conversion but face issues related to lead toxicity and stability.
  • Research on all-inorganic, lead-free perovskites like RbMoCl and RbMoBr shows they can potentially overcome these problems for solar applications.
  • RbMoBr has a direct bandgap of 1.60 eV for efficient solar cells, while RbMoCl offers a wider bandgap over 1.70 eV, making it suitable for tandem systems with silicon.
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  • This study investigates the link between depression and chronic constipation, revealing a positive correlation where higher depression scores are associated with a greater likelihood of experiencing chronic constipation.
  • Findings from the National Health and Nutrition Examination Survey (NHANES) demonstrated a significant association, and further analysis confirmed a causal relationship using Mendelian randomization techniques.
  • The results suggest that addressing chronic constipation in patients with depression could be beneficial in clinical settings, as there was no evidence of reverse causation affecting the outcome.
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Tfh cells potential dual role in cancer: A perspective.

Heliyon

October 2024

School of Biomedical Sciences, Hunan University, 410000, Changsha, PR China.

Article Synopsis
  • - T follicular helper cells (Tfh) play a crucial role in B-cell maturation and antibody production in the immune system but have complex effects on tumor immunity, potentially aiding anti-tumor responses or facilitating tumor growth.
  • - Their dual role derives from their ability to manipulate cytokine secretion, which influences other immune cells like cytotoxic T cells and natural killer cells.
  • - Understanding Tfh cells is essential for optimizing cancer treatments, as they can serve as biomarkers for immunotherapy response and potential targets for new therapeutic strategies in clinical trials.
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Mitochondrial dysfunction and immune cell infiltration play crucial yet incompletely understood roles in the pathogenesis of calcific aortic valve disease (CAVD). This study aimed to identify immune-related mitochondrial genes critical to the pathological process of CAVD using multiomics approaches. The CIBERSORT algorithm was employed to evaluate immune cell infiltration characteristics in CAVD patients.

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  • Hyperlipidemia (HLP) is a key factor in cardiovascular diseases, and quercetin (QUE), a natural flavonoid, shows promise as a treatment, though its exact effects on HLP are still not fully understood.
  • The study utilized advanced techniques like UPLC-Q-Exactive-MS metabolomics and network pharmacology to identify potential therapeutic targets and key metabolic pathways affected by QUE in HLP treatment.
  • Results revealed 138 relevant targets for QUE, with specific proteins (AKT1, TNF, VEGFA, mTOR, SREBP1, and SCD) being highlighted as potential therapeutic focuses; in vitro tests confirmed QUE's effectiveness in modulating these targets against HLP-associated changes.
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Aggregation-Induced Emission Luminogen: Role in Biopsy for Precision Medicine.

Chem Rev

October 2024

School of Science and Engineering, Shenzhen Institute of Aggregate Science and Technology, The Chinese University of Hong Kong, Shenzhen 518172, Guangdong China.

Article Synopsis
  • - Biopsy techniques, including tissue and liquid biopsies, provide essential real-time data for diagnosing and monitoring diseases, with fluorescent probes being a popular choice for their efficiency and non-invasive nature.
  • - However, traditional fluorescent probes suffer from aggregation-caused quenching (ACQ), which hampers advancements until aggregation-induced emission luminogens (AIEgens) were introduced, overcoming these limitations with better performance metrics.
  • - This review highlights recent developments in AIEgen-based biofluorescent probes across various sample types (tissue, blood, urine, saliva, and others), aiming to inspire future research in precision medicine by showcasing their innovative applications.
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Comprehensive analysis of NGS-based expanded carrier screening and follow-up in southern and southwestern China: results from 3024 Chinese individuals.

Hum Genomics

October 2024

Center for Medical Genetics, Hunan Key Laboratory of Medical Genetics, MOE Key Lab of Rare Pediatric Diseases, School of Life Sciences, Central South University, Changsha, 410000, China.

Article Synopsis
  • - The study conducted expanded carrier screening (ECS) on 3024 individuals from southern and southwestern China to assess the prevalence of recessively inherited genetic disorders and enhance reproductive advice.
  • - Results showed that 62.3% of participants carried pathogenic or likely pathogenic variants, with a significant portion being carriers of multiple diseases, indicating a high carrier frequency in the population.
  • - The findings support the effectiveness of ECS in identifying genetic carriers and provide valuable data for couples at risk, improving potential reproductive outcomes.
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Scalable fabrication of porous membrane incorporating human extracellular matrix-like collagen for guided bone regeneration.

J Mater Chem B

November 2024

State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.

Guided bone regeneration (GBR) is an extensively used technique for the treatment of maxillofacial bone defects and bone mass deficiency in clinical practice. However, to date, studies on membranes for GBR have not achieved the combination of suitable properties and cost-effective membrane production. Herein, we developed a polycaprolactone/human extracellular matrix-like collagen (PCL/hCol) membrane with an asymmetric porous structure the nonsolvent-induced phase separation (NIPS) method, which is a highly efficient procedure with simple operation, scalable fabrication and low cost.

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Atrial tachycardia originating from a right atrial free wall diverticulum: case report.

Eur Heart J Case Rep

October 2024

Department of Cardiovascular Medicine, The Second Xiangya Hospital of Central South University, 139 Renmin Road, Changsha City, Hunan Province 410000, China.

Background: Atrial tachycardia (AT) is an arrhythmic disorder originating from the atrium, independent of the atrioventricular node, and includes various types based on different mechanisms such as abnormal automaticity, triggered activity, and re-entry. These mechanisms are often related to specific anatomical structures. Focal AT, though relatively rare, typically arises from well-known locations in the left and right atria, such as the pulmonary veins, mitral valve annulus, crista terminalis, and coronary sinus ostium.

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