Publications by authors named "Xiping Mei"

Although a few of fluorescent probes based on carbon dots (CDs) for vitamin B (VB) determination have been emerged, none of them can realize the detection of different kinds of VB. In this paper, nitrogen, chlorine co-doped dual-emission CDs (N, Cl-CDs) with emissions at 404 nm and 595 nm have been easily synthesized. VB, VB and VB can all induce obvious fluorescence turn-off response toward the N, Cl-CDs.

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To develop a feasible, sensitive, and essential sensor is important for the identification of Fe ions and ascorbic acid (AA). Herein, highly fluorescent heteroatom co-doped carbon dots (N,S-CDs) with a quantum yield (QY) of 24.6% were synthesized, using hydrothermal treatment of L-cysteine (Cys) and 1-amino-2-naphthol-4-sulfonic acid (ANSA).

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Background: Sepsis is a serious condition with a high mortality rate, and septic patients often have organ dysfunction, low tissue perfusion and hypoxia, lactic acidosis, oliguria, or functional brain changes.

Objective: To observe the number and the function of Vδ1T cells in peripheral blood of septic patients, to analyze the clinical significance of detecting Vδ1T cells, and to clarify the correlation of their presence with the prognosis of sepsis.

Methods: The basic data of the septic patients were recorded at admission.

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Article Synopsis
  • The paper discusses the creation of dual-emission fluorescent carbon dots (CDs) doped with nitrogen and sulfur atoms, which emit light at 468 nm and 628 nm.
  • The interaction between these CDs and Cr (VI) ions causes a decrease in fluorescence at 468 nm and an increase at 628 nm, enabling the detection of Cr (VI) in water samples.
  • The detection range for Cr (VI) is from 3.8 to 38.9 μM, with a very low detection limit of 47.2 nM, and the CDs can also be used for cell imaging purposes.
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Background: As widely reported, propofol can effectively inhibit tumors development. However, little is known about the molecular mechanisms. Here, we proved that propofol regulated miR-340/CDK2 axis to suppress bladder cancer progression in vitro.

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Fifty-four Eucommia ulmoides leaves were subjected to a hydrothermal technique to synthesize carbon dots (CDs) of 3.55 ± 1.45 nm size.

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Ginsenoside (Rg1) has biological effects including anti-oxidation, anti-inflammation, neuroprotection and neural function improvement, but with few studies in sepsis-associated encephalopathy (SAE). This study thus evaluated Ginsenoside in alleviating SAE, suppressing oxidative stress (OS) or neuronal apoptosis. SAE mouse model was generated and were assigned into SAE, SAE + LD-Rg1, and SAE + HD-Rg1 groups to measure neural apoptosis by flow cytometry.

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This study investigated the protective effects and mechanisms of sevoflurane preconditioning (SPC) on neurons in ischemic mice. After SPC, mice were subjected to middle cerebral artery occlusion (MCAO). Cerebral infarction area, cell apoptosis, and metallothionein-1 (MT-1) and metallothionein-2 (MT-2) expressions in MCAO mice were analyzed.

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To observe the safety and impact on the short-term prognosis for patients of stroke volume variation (SVV) goal-directed fluid therapy (GDFT) in laparoscopic precision hepatectomy.
 Methods: A total of 120 patients (18-65 years old) undergoing laparoscopic precision hepatectomy were randomly divided into the fluid therapy group (group S) guided by SVV and the fluid therapy group (group C) guided by central venous pressure group (CVP), with 60 cases in each group. Mean arterial pressure (MAP) and heart rate (HR) were recorded at the following time: at home calm (T0), the operation started (T1), began to cut the liver (T2), the hepatectomy was acheived (T3), and in the end (T4).

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