4,239 results match your criteria: "First Affiliated Hospital of Dalian Medical University.[Affiliation]"

Background: Heart failure with improved ejection fraction (HFimpEF) has been regarded as a new heart failure (HF) type in 2022. However, studies on the impact of left ventricular ejection fraction (LVEF) trajectories on the prognosis of patients with HFimpEF are scarce. In this study, we investigated dynamic trajectories of LVEF and different clinical outcomes in HFimpEF.

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The incidence of atrial fibrillation (AF) increases with age; however, the precise mechanisms by which aging elevates AF risk and the effective biomarkers for managing AF in elderly patients remain unclear. We analyzed plasma samples from 100 elderly AF patients, 100 young and 100 elderly patients without atrial fibrillation (NAF), along with left atrial tissues obtained from both AF and NAF patients following valve replacement. Our findings indicate reduced levels of β-OHB and citrate synthase (CS) activity in elderly AF patients compared to their NAF counterparts.

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Background: Intervertebral disk degeneration (IVDD) is a complex degenerative skeletal condition, potentially influenced by micronutrients and serum metabolites in its etiology. However, the exact causal relationship between these factors and IVDD remains ambiguous.

Methods: The research employed a Two-Sample Mendelian Randomization (2SMR) analysis to thoroughly evaluate the causal relationship between 15 micronutrients (consisting of 7 minerals and 8 vitamins) as exposure variables, 1,091 blood metabolites, and 309 metabolite ratios as intermediary factors, and IVDD as the outcome.

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Morphological similarity and white matter structural mapping of new daily persistent headache: a structural connectivity and tract-specific study.

J Headache Pain

November 2024

Headache Center, Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, No.119 South Fourth Ring West Road, Fengtai District, Beijing, 100070, China.

Article Synopsis
  • New daily persistent headache (NDPH) is a rare headache disorder with constant, sudden-onset pain, and this study examines its unique structural brain abnormalities compared to healthy controls.
  • Researchers used advanced MRI techniques to analyze gray and white matter, focusing on brain connectivity and fiber tracts in 22 NDPH patients and 29 healthy participants.
  • Results revealed significant differences in brain structure: decreased connectivity and specific issues in certain brain regions in NDPH patients, which can help predict pain intensity based on neuroimaging features.*
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Background: The forkhead box (FOX) family members regulate gene transcription and expression. FOX family members regulate various biological processes, such as cell proliferation and tumorigenesis. FOXD, a FOX protein subfamily, is associated with poor prognosis for various cancers.

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Aim: Although a growing number of studies have shown that elevated uric acid (UA) levels are associated with multiple cardiovascular risk factors and progression of coronary artery disease, the causal relationship between UA and the occurrence of myocardial infarction (MI) remains uncertain. The aim of this study was to investigate the relationship between UA and the risk of MI.

Methods: We screened 23,080 patients in the National Health and Nutrition Examination Survey (NHANES) database for 2009-2018 and explored the association between UA and MI risk using multivariate logistic regression model.

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Statistical fragility of randomized clinical trials pertaining to femoral neck fractures.

Injury

October 2023

Department of Orthopedics, First Affiliated Hospital of Dalian Medical University, 222 Zhong Shan Road, Xi Gang District, Dalian, Liaoning 116011, China. Electronic address:

Objective: P values were frequently misused and misinterpreted, the fragility index (FI) has been utilized to evaluate the robustness of randomized controlled trials (RCTs) as a complement to p-values. This study aimed to assess the statistical robustness of RCTs for femoral neck fractures through the utilization of the FI.

Methods: We systematically reviewed PubMed, Cochrane Library, and Embase database to identify RCTs pertaining to femoral neck fractures published in the top 25 highest-impact orthopaedic journals and 4 high-impact general medical journals from January 1, 2000, to December 31, 2022.

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Ossification of the posterior longitudinal ligament of the cervical spine (C-OPLL) is a degenerative disorder that leads to the narrowing of the spinal canal and compression of both the spinal cord and nerve roots. This condition is more prevalent in East Asian populations, with marked regional variations in incidence. Symptoms include neck pain, restricted movement, limb numbness, and motor impairment.

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Background: The systemic immune-inflammation index (SII) is a proven, reliable inflammatory marker of the atherosclerotic process. Additionally, inflammation is one of the most important mechanisms of heart failure (HF) after myocardial infarction (MI). However, it is not clear whether SII is related to the risk of in-hospital HF in patients with MI.

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Hypertension and its resulting target organ damage is a complex process associated with a range of physiological and molecular factors, including immune regulation. The profound effects of exercise on normal immune system function and the development and progression of hypertension are well known. This review aims to create new avenues for preventing and treating hypertension and its associated target organ damage.

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Previous studies have pointed to a potential link between Obstructive Sleep Apnea (OSA) and gastrointestinal diseases, suggesting that this relationship might be influenced by the presence of Metabolic Syndrome. However, the exact role of these factors in determining gastrointestinal diseases has not been thoroughly explored. In our study, we utilized data from the Genome-wide Association Studies (GWAS) database, focusing on OSA, metabolic syndrome characteristics such as Body Mass Index (BMI), waist circumference, triglycerides, cholesterol, hypertension, type 2 diabetes, and common gastrointestinal diseases including chronic gastritis, gastric ulcers, irritable bowel syndrome, colorectal cancer, inflammatory bowel disease, cholecystitis, nonalcoholic fatty liver, and dyspepsia.

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Aim: To elucidate the biological functionality and regulatory mechanisms of GdX in breast cancer (BC).

Methods: The examination of GdX expression in human BC tissues and cell lines was conducted through immunohistochemical (IHC) and Western blot. Cell proliferation capacity was assessed via the CCK-8 and colony formation assay, while cell migration was determined through the wound healing assay.

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Background: Abnormal sphingolipid metabolism (SM) is closely linked to the incidence of cancers. However, the role of SM in pancreatic cancer (PC) remains unclear. This study aims to explore the significance of SM in the prognosis, immune microenvironment, and treatment of PC.

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Article Synopsis
  • * A study involving blood and fecal samples from 36 subjects revealed that patients with persistent lymphopenia had notable reductions in various T-cell subtypes and changes in gut microbiota composition, including increased levels of certain bacteria like Staphylococcus.
  • * Metabolomics analysis showed alterations in metabolites, with increases in α-Ketoisovaleric acid and decreases in several bile acids; these changes may contribute to disrupted gut immune responses and severe immune dysfunction, potentially leading to higher mortality rates in these patients.
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Insufficient accumulation of reactive oxygen species (ROS) due to tumor hypoxia significantly contributes to increased radiation resistance and the failure of radiotherapy (RT). Therefore, developing methods to alleviate hypoxia and boost ROS levels represents a promising strategy for enhanced radiosensitivity. This study introduced a self-cascade catalytic Pt@Au nanozymes as a radiosensitizer, using glucose oxidase (GOx)-, catalase (CAT)-, and peroxidase (POD)-like activities to improve hypoxia and increase ROS accumulation, thereby affecting glucose metabolism and enhancing the effects of RT.

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Article Synopsis
  • Benign prostatic hyperplasia (BPH) is a common condition in older males, influenced by inflammatory and metabolic factors, particularly related to inflammation-related proteins and plasma metabolites.
  • The study used two-sample Mendelian randomization to investigate how IL-2 levels increase BPH risk, while lower levels of the metabolite N6,N6-dimethyllysine reduce it, highlighting a complex causal relationship.
  • Findings suggest that N6,N6-dimethyllysine mediates the effect of IL-2 on BPH, offering insights that could lead to new diagnostic and treatment strategies for understanding and managing the disease.
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Article Synopsis
  • Traditional trypsin digestion used for cell harvesting minimizes cell activity and often requires multiple digestions.
  • This study developed thermosensitive hollow fiber membranes (HFMs) grafted with PNIPAAm to allow dynamic culture and non-destructive cell harvesting, confirmed by various analyses.
  • Cells grown on these thermosensitive HFMs showed improved proliferation and cell separation efficiency, suggesting their potential for large-scale applications in biomedical fields.
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Cholangiocarcinoma (CCA) is a malignant tumor originating from cholangiocytes. However, it remains unclear about the pathogenesis of this carcinoma, which may be related to multiple factors. Currently, CCA is mainly treated by surgery, chemotherapy, and radiotherapy.

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Pneumonia remains a prevalent infection primary ailment characterized by severe lung inflammation, leading to respiratory distress and significant mortality rates, particularly affecting young children in less developed regions. This study explores the therapeutic potential of low and high-molecular weight polysaccharides derived from in a murine model of lipoteichoic acid (LTA)-induced pneumonia, which represents bacterial-induced lung inflammation. Administration of polysaccharides effectively alleviated LTA-induced symptoms, including decreased lung and colon inflammation, and restored dysbiosis of gut microbiota.

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Squamous cell carcinoma of the head and neck (HNSCC) is a difficult-to-treat cancer and treatment is challenging due to recurrence or metastasis. Therefore, there is an urgent need to explore more effective targeted therapies to improve the clinical outcomes and survival of HNSCC patients. The nanomedicine is emerging as a promising strategy to achieve maximal anti-tumor effect in cancer therapy.

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Article Synopsis
  • Researchers created a modified acellular bovine bone matrix (ABBM-Mg) that releases Magnesium ions to promote bone healing and growth in defective areas, specifically in the jawbone.
  • The study used various methods to analyze the microstructure, mechanical properties, and cell interactions of both the standard ABBM and the modified ABBM-Mg, showing that the latter performed better in enhancing cell growth and bone formation.
  • In a rat model with mandibular defects, the ABBM-Mg scaffold not only supported better bone repair but also maintained its structural integrity, indicating its potential for clinical use in bone regeneration therapies.
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Microbial biomarker discovery in Parkinson's disease through a network-based approach.

NPJ Parkinsons Dis

October 2024

Department of Neurology, Peking University Sixth Hospital, Peking University Institute of Mental Health, NHC Key Laboratory of Mental Health (Peking University), National Clinical Research Center for Mental Disorders (Peking University Sixth Hospital), Peking University, 100191, Beijing, China.

Associations between the gut microbiota and Parkinson's disease (PD) have been widely investigated. However, the replicable biomarkers for PD diagnosis across multiple populations remain elusive. Herein, we performed a meta-analysis to investigate the pivotal role of the gut microbiome in PD and its potential diagnostic implications.

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Postoperative pancreatic fistula (POPF) is a common and challenging complication following pancreaticoduodenectomy (PD), occurring in 2% to 46% of cases. Despite various pancreaticojejunostomy techniques, an effective method to prevent POPF has not been established. This study aimed to develop and evaluate a novel 3D-printed biodegradable pancreatic duct stent to simplify the surgical process of pancreaticojejunostomy, reduce anastomotic complexity, and minimize postoperative complications.

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Background: A previous investigation reported that an abnormal P-wave terminal force in lead V1 (PTFV1) is a marker for electrical remodeling of the left atrium (LA). We aimed to assess the relationship of PTFV1 with LA tachyarrhythmia (LATA) recurrence after radiofrequency catheter ablation (RFCA) in patients with paroxysmal atrial fibrillation (PAF) and normal LA size.

Methods: Patients with PAF and normal LA size (LA volume index < 34 ml/m) who underwent RFCA were consecutively included between January 2018 and December 2020 and divided into two groups based on the presence (recurrence group) or absence (nonrecurrence group) of LATA recurrence.

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