Publications by authors named "Dan Pan"

Brain-derived neurotrophic factor (BDNF), which is primarily expressed in the brain and nervous tissues, is the most abundant neurotrophic factor in the adult brain. BDNF serves not only as a major neurotrophic signaling agent in the human body but also as a crucial neuromodulator. Widely distributed throughout the central nervous system (CNS), both BDNF and its receptors play a significant role in promoting neuronal survival and growth, thereby exerting neuroprotective effects.

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Objective: This review aims to provide an overview of the role of microorganisms in the onset and progression of periapical diseases, particularly regarding their effects on bone homeostasis.

Design: The search for this narrative review was conducted in PubMed, Web of Science and Google Scholar using relevant keywords, including checking reference lists of journal articles by hand searching.

Results: Microorganisms directly promote osteoclasts through pathways such as nuclear factor-κB (NF-κB) and extracellular regulated protein kinases (ERK), while inhibiting osteoblasts function by interfering with the wingless-related integration site (Wnt)/β-catenin pathway in the periapical area.

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Ingestion of foreign bodies may be a frequent cause of painful dysphagia. We report the case of a metallic wire impacted in the oesophagus with potentially devastating consequences.

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Background: Burning mouth syndrome (BMS) is a chronic intraoral dysesthesia with elusive aetiology, only few studies have been carried out on immune function in BMS patients. We aimed to investigate the role immune function paly in the pathogenesis of BMS by psychoneuroimmunology (PNI).

Method: We recruited 44 BMS patients and 31 controls.

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Article Synopsis
  • G3BP1 is a vital protein involved in the formation of stress granules (SGs) triggered by increased RNA levels in cells, impacting cell survival and death.
  • It regulates various biological processes such as cell growth, death, and RNA metabolism while influencing important signaling pathways related to diseases like cancer and neurodegenerative disorders.
  • G3BP1 also acts as an antiviral factor by interacting with viral proteins, playing a key role in the body's defense against viruses, and the article highlights recent insights into its structure, function, and relationships with diseases.
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  • The paper tackles challenges in accurately segmenting aortic dissections due to issues like low contrast with surrounding tissues, varying dissection shapes, and high background noise.
  • It proposes a two-stage segmentation model that uses deep reinforcement learning to first localize the dissection, then refine the segmentation results based on the initial output.
  • Experimental results show that this method outperforms several established models, significantly enhancing segmentation accuracy, particularly for those that initially struggle with performance.
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  • A new model called 3DCNN+EL+GA combines three-dimensional convolutional neural networks and genetic algorithms to identify patients with Alzheimer's Disease (AD) and Mild Cognitive Impairment (MCI) by analyzing brain images.
  • The model not only classifies these conditions but also pinpoints specific brain regions involved, like the hippocampus and amygdala, that are crucial for emotions and memory.
  • Testing on data from Alzheimer's Disease Neuroimaging Initiative (ADNI) and Open Access Series of Imaging Studies (OASIS) showed this method is more effective than other deep learning approaches, and future studies aim to explore its application for identifying brain regions in other disorders, such as depression and schizophrenia.
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The objective of this study was to assess alterations in maxillary sinus mucosa thickness and the distances between the apexes of specific teeth and the maxillary sinus base in adult patients undergoing orthodontic treatment with the extraction of four first premolars. Twenty-one adults, averaging 24.85 years of age, received orthodontic therapy involving the extraction of all four first premolars.

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Aims: Specific identification of a hydatidiform mole (HM) and subclassification of a complete hydatidiform mole (CHM) or partial hydatidiform mole (PHM) are critical. This study aimed to reappraise the diagnostic performance of ultrasonography and histology with a refined diagnosis.

Methods: This was a retrospective, multicentre cohort study of 821 patients with histologically suspected HM specimens.

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Alzheimer's Disease (AD) is a progressive neurodegenerative disorder. Due to the subtlety of symptoms in the early stages of AD, rapid and accurate clinical diagnosis is challenging, leading to a high rate of misdiagnosis. Current research on early diagnosis of AD has not sufficiently focused on tracking the progression of the disease over an extended period in subjects.

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Kidney diseases pose a significant threat to human health due to their high prevalence and mortality rates. Worryingly, the clinical use of drugs for kidney diseases is associated with more side effects, so more effective and safer treatments are urgently needed. Oleanolic acid (OA) is a common pentacyclic triterpenoid that is widely available in nature and has been shown to have protective effects in kidney disease.

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Background: In order to contribute new insights for future prevention and treatment of intrahepatic cholestasis of pregnancy (ICP), and to promote positive pregnancy outcomes, we evaluated serum Ca levels and inositol 1,4,5-trisphosphate receptor (InsP3R) expression in the liver tissue of a rat ICP model.

Methods: After establishing the model by injection of oestradiol benzoate and progesterone into pregnant rats, animals were divided into normal control ( = 5) and ICP model groups ( = 5). The expression of InsP3R protein in the liver, and serum levels of Ca, glycocholic acid and bile acid were detected.

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Article Synopsis
  • Mitochondrial dynamics significantly influence the stemness of oral squamous cell carcinoma (OSCC) cells, with a focus on the role of the protein DRP1 in maintaining mitochondrial shape and function.
  • DRP1 knockdown leads to imbalanced mitochondrial dynamics, reducing the stem cell characteristics of OSCC cells and altering metabolic pathways, particularly affecting α-ketoglutarate levels and glutaminolysis.
  • Enhancing mitochondrial elongation through DRP1 suppression not only diminishes stemness but also increases the effectiveness of ferroptosis as a cancer treatment strategy, revealing potential therapeutic avenues.
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Background And Objective: Lung tumor annotation is a key upstream task for further diagnosis and prognosis. Although deep learning techniques have promoted automation of lung tumor segmentation, there remain challenges impeding its application in clinical practice, such as a lack of prior annotation for model training and data-sharing among centers.

Methods: In this paper, we use data from six centers to design a novel federated semi-supervised learning (FSSL) framework with dynamic model aggregation and improve segmentation performance for lung tumors.

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Natural products can overcome the limitations of conventional chemotherapy. Acetyl-11-keto-beta-boswellic acid (AKBA) as a natural product extracted from frankincense, exhibited chemotherapeutic activities in different cancers. However, whether AKBA exerts inhibiting effect of oral squamous cell carcinoma (OSCC) cells growth and the mechanism need to be explored.

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The integration of structural magnetic resonance imaging (sMRI) and deep learning techniques is one of the important research directions for the automatic diagnosis of Alzheimer's disease (AD). Despite the satisfactory performance achieved by existing voxel-based models based on convolutional neural networks (CNNs), such models only handle AD-related brain atrophy at a single spatial scale and lack spatial localization of abnormal brain regions based on model interpretability. To address the above limitations, we propose a traceable interpretability model for AD recognition based on multi-patch attention (MAD-Former).

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There are few histological studies on multifidus after lumbar surgery, and it is not clear whether multifidus changes affect the clinical outcome after lumbar surgery. The aim of this study was to investigate the relationship between multifidus changes and clinical outcomes after lumbar surgery. Patients underwent internal fixation removal after lumbar posterior surgery were enrolled.

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Despite extensive studies on the thermodynamic mechanism governing molecular adsorption at the solid-water interface, a comprehensive understanding of the crucial role of interface properties in mediating the entropy-enthalpy compensation during adsorption is lacking, particularly at a quantitative level. Herein, we employed two types of surface models (hydroxyapatite and graphene) along with a series of amino acids to successfully elucidate how distinct interfacial features dictate the delicate balance between entropy and enthalpy variations. The adsorption of all amino acids on the hydroxyapatite surface is an enthalpy-dominated process, where the water-induced enthalpic component of the free energy and the surface-adsorbate electrostatic interaction term alternatively act as the driving force for adsorption in different regions of the surface.

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Objective: To compare the hypertensive disorders of pregnancy (HDP) risk between vaginal and intramuscular (IM) progesterone in programmed frozen-thawed embryo transfer (FET) cycles.

Methods: This was a retrospective cohort study at a tertiary hospital, and only women who achieved ongoing pregnancy after programmed FET between January 2018 and June 2022 were included. Women with chronic hypertension before pregnancy or with history of gestational hypertension or pre-eclampsia in previous pregnancies were excluded.

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Head and neck cancer (HNC) is the seventh most prevalent malignancy worldwide in 2020. Cancer metastasis is the main cause of poor prognosis in HNC patients. Recently, circular RNAs (circRNAs), initially thought to have no biological function, are attracting increasing attention, and their crucial roles in mediating HNC metastasis are being extensively investigated.

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Brandt's vole (Lasiopodomys brandtii) is a species with hypoxia tolerance, and glucose serves as the primary energy substrate under hypoxia. However, the glucose supply in Brandt's voles under hypoxia has not been studied. This study aimed to investigate characteristics in physiological indices and liver gene expression associated with glucose supply in Brandt's voles under hypoxia.

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Article Synopsis
  • Alzheimer's disease (AD) is a serious and irreversible brain disorder that affects memory and cognitive skills, making accurate diagnosis crucial.
  • A new framework is introduced that integrates nonlinear feature extraction and 3D hypergraph neural networks to enhance the diagnostic process for AD by analyzing brain data more effectively.
  • The framework showed significant improvements in classification accuracy over existing methods, suggesting it could be a valuable tool for computer-assisted diagnosis of AD.
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Background: Per-procedural severe mitral regurgitation is a rare complication in concomitant surgical ventricular restoration and postinfarction ventricular septal rupture repair. It is challenging to discover the underlying etiology and adopt an appropriate strategy, in particular, in a high-risk patient.

Case Presentation: Semi-emergent surgical ventricular restoration combined with ventricular septal rupture closure and coronary artery bypassing was performed in a 67-year-old male patient.

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Objectives: This study was aimed to evaluate the safety and benefit of short-term application of hydroxychloroquine in the management of atrophic/erosive/ulcerative oral lichen planus (OLP).

Methods: This multicenter, randomized, controlled, evaluator-blinded, prospective clinical trial was performed from October 1, 2019, to September 1, 2022. A total of 99 patients were randomized to receive systemic use of hydroxychloroquine (n = 50), or topical use of 0.

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