Publications by authors named "Meng Qingtao"

Hepatic epithelioid angiomyolipoma is a rare mesenchymal liver tumor within the perivascular epithelioid cell tumor family, known for its uncertain malignancy and potential for aggressive behavior. Clinical presentation, laboratory findings, and imaging results lack specificity, making pathological examination critical for definitive diagnosis. This case report presents a 61-year-old male patient with a single tumor in the right liver lobe, measuring approximately 101 mm × 99 mm.

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  • The study addresses the challenges of using nanozymes for cancer therapy due to limited substrates like HO and O in the tumor microenvironment (TME).
  • Researchers developed a novel MnO@PtAuRu nanoreactor that combines a hollow MnO core with tiny PtAuRu nanoclusters to enable self-propelling and cascading catalytic reactions for better tumor treatment.
  • The nanoreactor not only produces hydroxyl radicals for enhanced chemodynamic therapy but also protects the nanoclusters during circulation and interacts with tumor-specific elements, making it a promising strategy for effective cancer therapy.
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There is a correlation between long-term manganese (Mn) exposure and the Parkinson's-like disease (PD), with depression as an early symptom of PD. However, the direct relationship between Mn exposure and depression, and the mechanisms involved, remain unclear. We found that Mn exposure led to depressive-like behavior and mild cognitive impairment in mice, with Mn primarily accumulating in the cornu ammonis 3 (CA3) area of the hippocampus.

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Background: Postoperative delirium (POD) is a serious and common complication. The aim of present study is to investigate the diurnal variation of POD and the effects of esketamine in elderly patients.

Methods: A randomized, double-blind, placebo-controlled clinical trial with factorial design was conducted.

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Copper(II) complexes are very promising candidates for platinum-based anticancer agents. Herein, three Cu (II) complexes (1-3) containing 1,8-naphthalimide ligands were synthesized and characterized by FT-IR, elemental analysis, ESI-MS and single crystal X-ray diffraction (complex 3). In addition, a control compound (complex 4) without 1,8-naphthalimide ligand was synthesized and characterized.

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  • - The study conducted in the Ganzi Tibetan Plateau aimed to assess the prevalence of hypertension and its associated risk factors, particularly focusing on salt intake among 4,036 adult residents.
  • - Results revealed that the hypertensive prevalence was 33.5%, with only 50.9% of those affected aware of their condition, and only 11.2% effectively controlling their blood pressure through treatment.
  • - Key risk factors identified included older age, male gender, living at high altitudes (≥ 3500 m), being overweight or obese, and increased salt intake, which significantly correlated with higher blood pressure readings.
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The emission of venenous sulfur dioxide (SO) and its derivatives from industrial applications such as coking, transportation and food processing has caused great concern about public health and environmental quality. Probes that enable sensitivity and specificity to detect SO derivatives play a crucial role in its regulations and finally mitigating its environmental and health impacts, but fluorescent probes that can accurately, rapidly and on-site detect SO derivatives in foodstuffs and environmental systems rarely reported. Herein, a near-infrared (NIR) fluorescent probe (ZTX) for the ratiometric response of bisulfite (HSO) was designed and synthesized by regulating the structure of high-performance HSO fluorescent probe SL previously reported by us based on structural analyses, theoretical calculations and related literature reports.

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Ischemia-reperfusion (IR) injury is primarily characterized by the restoration of blood flow perfusion and oxygen supply to ischemic tissue and organs, but it paradoxically leads to tissue injury aggravation. IR injury is a challenging pathophysiological process that is difficult to avoid clinically and frequently occurs during organ transplantation, surgery, shock resuscitation, and other processes. The major causes of IR injury include increased levels of free radicals, calcium overload, oxidative stress, and excessive inflammatory response.

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Intestinal ischemia‒reperfusion (IIR) injury is a common complication of surgery, but clear molecular insights and valuable therapeutic targets are lacking. Mitochondrial calcium overload is an early sign of various diseases and is considered a vital factor in ischemia‒reperfusion injury. The mitochondrial calcium uniporter (MCU), which is located on the inner mitochondrial membrane, is the primary mediator of calcium ion entry into the mitochondria.

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  • Osteoarthritis (OA) is a common condition causing pain and disability in older individuals, and the link between metalloproteins (MPs) and OA is not well understood.
  • Researchers used Mendelian randomization to investigate this relationship, analyzing data from 3301 samples on MPs and 462,933 samples for OA.
  • The study found a significant negative correlation between four specific MPs and the occurrence of OA, suggesting potential for better diagnosis and treatment options, with no evidence of reverse causation.
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The significant correlation between particulate matter with aerodynamic diameters of ≤ 2.5 µm (PM) and the high morbidity and mortality of respiratory diseases has become the consensus of the research. Epidemiological studies have clearly pointed out that there is no safe concentration of PM, and mechanism studies have also shown that exposure to PM will first cause pulmonary inflammation.

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Despite increasing concerns regarding the harmful effects of plastic-induced gut injury, mechanisms underlying the initiation of plastic-derived intestinal toxicity remain unelucidated. Here, mice were subjected to long-term exposure to polystyrene nanoplastics (PS-NPs) of varying sizes (80, 200, and 1000 nm) at doses relevant to human dietary exposure. PS-NPs exposure did not induce a significant inflammatory response, histopathological damage, or intestinal epithelial dysfunction in mice at a dosage of 0.

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Background: Osteosarcoma, a tumor that originates from bone cells, has a poor prognosis and a high degree of malignancy. Anlotinib, a small-molecule multi-target tyrosine kinase inhibitor (TKI), is the first-line drug in treating osteosarcoma, especially in late-stage osteosarcoma. However, patients often develop resistance after using anlotinib for a certain period, which poses a challenge to its further clinical application.

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Background And Objective: Intracerebral hemorrhage is one of the diseases with the highest mortality and poorest prognosis worldwide. Spontaneous intracerebral hemorrhage (SICH) typically presents acutely, prompt and expedited radiological examination is crucial for diagnosis, localization, and quantification of the hemorrhage. Early detection and accurate segmentation of perihematomal edema (PHE) play a critical role in guiding appropriate clinical intervention and enhancing patient prognosis.

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Sestrins are metabolic regulators that respond to stress by reducing the levels of reactive oxygen species (ROS) and inhibiting the activity of target of rapamycin complex 1 (mTORC1). Previous research has demonstrated that Sestrin2 mitigates ischemia-reperfusion (IR) injury in the heart, liver, and kidneys. However, its specific role in intestinal ischemia-reperfusion (IIR) injury remains unclear.

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Endoplasmic reticulum (ER)-mitochondria contacts are critical for the regulation of lipid transport, synthesis, and metabolism. However, the molecular mechanism and physiological function of endoplasmic reticulum-mitochondrial contacts remain unclear. Here, we show that Mic19, a key subunit of MICOS (mitochondrial contact site and cristae organizing system) complex, regulates ER-mitochondria contacts by the EMC2-SLC25A46-Mic19 axis.

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Emission of toxic gaseous sulfur dioxide (SO) and its derivative bisulfite (HSO) from various industrial applications, like food processing, transportation, and the coking process, has raised substantial concerns regarding environmental quality and public health. The probes for specific and sensitive detection of SO derivatives plays an essential role in their regulation, and ultimately mitigating their environmental and health implications, but the one that can detect SO derivatives onsite by end users remains limited. Herein, we report a new near-infrared fluorescence probe (SL) for rapid and onsite detection of SO derivative, HSO in industrial wastewater, food samples and for sensing its interaction with biological organisms.

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Introduction: Hypertension increases the risk of cardiovascular disease. Uncontrolled nocturnal blood pressure is prevalent in patients taking antihypertensive medication, with an incidence rate of 30-60%. Although chronotherapy with antihypertensive agents may provide a new direction for effective control of nocturnal blood pressure, the clinical evidence base remains controversial.

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Particulate matter with aerodynamic diameters of ≤2.5 μm (PM) is associated with multiple organ damage, among which the influence of PM on the gastrointestinal system has been a recent focus of attention. In this study, four different types of PM exposure models are established to determine the occurrence of PM induced intestinal inflammation.

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Background: Accurate interpretation of coronary computed tomography angiography (CCTA) is a labor-intensive and expertise-driven endeavor, as inexperienced readers may inadvertently overestimate stenosis severity. Recent artificial intelligence (AI) advances in medical imaging present compelling prospects for auxiliary diagnostic tools in CCTA. This study aimed to externally validate an AI-assisted analysis system capable of rapidly evaluating stenosis severity, exploring its potential integration into routine clinical workflows.

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We report the development of a bifunctional near-infrared fluorescent probe (QZB) for selective sensing of bisulfite (HSO) and hypochlorous acid (HOCl). The synergistic detection of HSO and HOCl was achieved via a C=C bond recognition site. In comparison with the red-fluorescence QZB, two different products with non-fluorescence and paleturquoise fluorescence were produced by the recognition of QZB towards HSO and HOCl respectively, which can realize effectively the dual-functional detection of HSO and HOCl.

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The direct alkoxylation of amides has been accomplished via methoxyiminoacyl (MIA)-mediated Pd-catalyzed C-H functionalization. A diverse array of alkylamide substrates is amenable to this protocol, providing γ-C(sp)-alkoxylation of alkylamide derivatives with good to high efficiency. Two aspects of the research were completed to explore the reaction mechanism.

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