Publications by authors named "NanNan Han"

Adequate blood supply around bone grafts is crucial in periodontal regenerative surgery. Research suggests that cortical perforation during surgery can stimulate angiogenesis and cell migration, increase blood supply to the surgical site, and promote local tissue regeneration. However, the effects of perforation on the local tissue microenvironment and the molecular mechanisms by which corticotomy promotes bone regeneration remain unclear.

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Purpose: To explore the expression of hub genes, pathways and inhibitory immune checkpoints of CD8+ T cells in metastatic lymph nodes of head and neck squamous cell carcinoma(HNSCC) in C3H/He mice.

Methods: A popliteal lymph node metastasis model of immunocompetent C3H/He mice was constructed with SCC-7 cell line of HNSCC, and the lymph node metastasis status was determined by immunofluorescence. CD8+ T cells in normal and metastatic lymph nodes were sorted by flow cytometry, and transcriptome sequencing analysis was performed to screen out differentially expressed genes.

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Although the output of the lateral habenula (LHb) controls the activity of midbrain dopamine (DA) and 5-hydroxytryptamine (5-HT) containing systems, which are implicated in the pathophysiology of anxiety, it is not clear how activation and blockade of LHb D receptors affects anxiety-like behaviors, particularly in Parkinson's disease related anxiety. In this study, unilateral 6-hydroxydopamine lesions of the substantia nigra pars compacta (SNc) in rats induced anxiety-like behaviors, which attribute to hyperactivity of LHb neurons and decrease in the level of DA in the medial prefrontal cortex (mPFC), amygdala and ventral hippocampus (vHip) compared to sham-operated rats. Intra-LHb injection of D receptor agonist A412997 induced or increased the expression of anxiety-like behaviors, while injection of D receptor antagonist L741742 showed anxiolytic effects in sham-operated and the SNc-lesioned rats.

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Background: Stroke, particularly due to large vessel occlusion (LVO), is a major cause of mortality and disability globally. Endovascular therapy (ET) significantly improves outcomes for acute ischemic stroke (AIS) patients, but complications such as stroke-associated pneumonia (SAP) increase mortality and healthcare costs. This study investigates the association between blood-brain barrier (BBB) disruption and the increased risk of SAP and explores the relationship between BBB disruption and medium-term functional outcomes.

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Two-dimensional topological insulators (TIs) show great potential applications in low-power quantum computing and spintronics due to the spin-polarized gapless edge states. However, the small bandgap limits their room-temperature applications. Based on first-principles calculations, a series of CX (X = H, F, Cl, Br and I) functionalized III-V monolayers are investigated.

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CsCuI is a popular lead-free metal halide perovskite with good thermal and air stability. To facilitate its applications in optoelectronics, Ag doping and high pressure are employed in this work to improve the optoelectronic properties of CsCuI. Using first-principles calculations and experiments, the structural phase change of 10% Ag-doped CsCuI is found to occur at about 4.

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Objective: Endovascular thrombectomy (EVT) in patients with large infarct volume remains controversial. The aim of this study is to compare clinical outcomes between EVT and medical management in acute large vessel occlusion with infarct volumes larger than 70 mL on diffusion-weighted magnetic resonance imaging (DWI).

Methods: A prospective observational cohort study was conducted, including patients with anterior cerebral circulation occlusion due to ischemic stroke with infarct volumes larger than 70 mL within 24 h of onset between July 2018 and June 2023.

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The photovoltaic (PV) effect in non-centrosymmetric materials consisting of a single component under homogeneous illumination can exceed the fundamental Shockley-Queisser limit compared to the traditional p-n junctions. Two-dimensional (2D) materials with a reduced dimensionality and smaller bandgap were predicated to be better candidates for the PV effect with high efficiency exceeding that of traditional ferroelectric perovskite oxides. Here, we report the giant intrinsic PV effect in atomically thin rhenium disulfide (ReS) with centrosymmetry breaking.

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Objective: The present study aimed to evaluate the effects of reuterin, a bioactive isolated from the probiotic Lactobacillus reuteri (L. reuteri) on periodontal tissue regeneration, and provide a new strategy for periodontitis treatment in the future.

Background: Data discussing the present state of the field: Probiotics are essential for maintaining oral microecological balance.

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Purpose: The objective of this study was to evaluate the relationship between arterial transit artifact (ATA), arterial spin labeling (ASL) perfusion imaging, and the outcome of patients with acute ischemic stroke (AIS) due to occlusion of large vessels in anterior circulation after endovascular thrombectomy (EVT).

Methods: Patients with anterior circulation occlusion treated with EVT between October 2017 and December 2021 were enrolled in this retrospective study, and ATA was quantified by a 4-point scale. A favorable outcome was defined by modified Rankin Scale (mRS) scores of 0-2 at 3 months.

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Article Synopsis
  • The study investigates the role of microRNA-155 (miR-155) in orthodontic tooth movement and osteoclast differentiation, as its specific functions in these areas remain unclear.
  • Researchers used various agents to manipulate miR-155 levels in murine cells and observed effects on osteoclast differentiation and tooth movement in mouse models.
  • Results indicated that higher levels of miR-155 decreased osteoclast activity and tooth movement, while inhibiting miR-155 led to increased osteoclast function and improved tooth movement rates, with SOCS1 identified as a potential target gene for miR-155.
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Background: To evaluate the effects of antimicrobial peptides (AMPs) on Stage III Grade B periodontitis.

Methods: This trial abided by the principle of consistency test, approved by ethics committee and registered in clinical trials. All qualified 51 patients with Stage III Grade B periodontitis were randomly divided into three groups: SRP group, SRP with minocycline hydrochloride (Mino group) as Control groups, and SRP with AMPs (AMP group) as the Test group.

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Periodontitis, a chronic infectious disease, primarily arises from infections and the invasion of periodontal pathogens. This condition is typified by alveolar bone loss resulting from host immune responses and inflammatory reactions. Periodontal pathogens trigger aberrant inflammatory reactions within periodontal tissues, thereby exacerbating the progression of periodontitis.

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Introduction: Based on real-world case data, this study intends to explore and analyze the impact of rescue conscious sedation (CS) on the clinical outcomes of patients with anterior circulation acute ischemic stroke (AIS) receiving mechanical thrombectomy (MT).

Methods: This retrospective study enrolled patients with anterior circulation AIS who received MT and were treated with either single local anesthesia (LA) or rescue CS during MT between January 2018 and October 2021. We used univariate and multivariate logistic regression methods to compare the impact of LA and CS on the clinical outcomes of patients with AIS who received MT, including the mRS at 90 days, the incidence of poststroke pneumonia (PSP), the incidence of symptomatic intracranial cerebral hemorrhage (sICH), and the mortality rate.

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Objective: The aim of this study is to evaluate the role of FRCs regulated by cancer cell-derived extracellular vesicles (CEVs) played in pre-metastatic niche (PMN) formation of lymph node (LN).

Materials And Methods: The FRCs in sixty fresh cervical LNs from 20 patients were evaluated by flow cytometric analysis. Cells in LN with or without metastasis were analyzed by single-cell RNA sequencing (scRNA-seq).

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Objective: The prognosis for patients presenting with a large ischemic core (LIC) following endovascular thrombectomy is relatively poor. This study aimed to construct and validate a nomogram for predicting 3-month unfavorable outcome in patients with anterior circulation occlusion-related LIC who underwent endovascular thrombectomy.

Methods: A retrospective training cohort and a prospective validation cohort of patients with a large ischemic core were studied.

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Background: Cervical lymph node metastasis is one of the poorest prognostic factors in oral squamous cell carcinoma (OSCC). Activated immune cells generally have metabolic abnormalities in the tumour microenvironment. However, it is unknown whether abnormal glycolysis in T cells could facilitate metastatic lymph nodes in OSCC patients.

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Introduction: High-mobility group box 1 protein (HMGB1) is extensively involved in causing ischemic stroke, pathological damage of ischemic brain injury, and neural tissue repair after ischemic brain injury. However, the precise role of HMGB1 in ischemic stroke remains to be elucidated.

Methods: Comprehensive literature search and narrative review to summarize the current field of HMGB1 in cerebral ischemic based on the basic structure, structural modification, and functional roles of HMGB1 described in the literature.

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Article Synopsis
  • Van der Waals (vdW) stacking of 2D materials like bilayer MoS and monolayer graphene can create unique structures that exhibit second-harmonic generation (SHG).
  • The interlayer charge transfer and uneven charge distribution in bilayer MoS are key factors in breaking centrosymmetry, allowing for enhanced SHG properties, confirmed by various scientific methods.
  • The observed SHG strength in the 2LM/1LG heterostructure is comparable to that of monolayer MoS, indicating potential for using SHG spectroscopy to study interlayer interactions in these materials.
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Article Synopsis
  • The periodontal immune microenvironment is a complex system involving various immune cells like neutrophils, macrophages, T cells, and mesenchymal stem cells that can lead to inflammation and tissue damage when imbalanced.
  • The review highlights the characteristics of these immune cells and their roles in the development of periodontitis and bone remodeling, focusing on how they interact within the immune regulatory network.
  • It suggests that future treatments for periodontitis should explore new targeted drugs and technologies to better understand and regulate the local microenvironment, offering a foundation for further research in this area.
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Background: It is unclear whether patients with severely disabling ischemic stroke (SDIS-that is, modified Rankin scale (mRS) scores of 3-5) benefit from non-acute endovascular recanalization (ER).

Objective: To determine the effect of non-acute ER or medical treatment in severely disabled patients with non-acute ischemic stroke (mRS scores of 3-5).

Methods: Between January 2018 and August 2021, non-acute patients with SDIS and large vessel occlusion were collected from two regional stroke centers.

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Cells experience both endogenous and exogenous DNA damage daily. To maintain genome integrity and suppress tumorigenesis, individuals have evolutionarily acquired a series of repair functions, termed DNA damage response (DDR), to repair DNA damage and ensure the accurate transmission of genetic information. Defects in DNA damage repair pathways may lead to various diseases, including tumors.

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