Publications by authors named "Qingnan Liu"

Acute myocardial infarction (AMI) remains a leading cause of death among patients with cardiovascular diseases. Percutaneous coronary intervention (PCI) has been the preferred clinical treatment for AMI due to its safety and efficiency. However, research indicates that the rapid restoration of myocardial oxygen supply following PCI can lead to secondary myocardial injury, termed myocardial ischemia-reperfusion injury (MIRI), posing a grave threat to patient survival.

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Background: The Platelet to High-Density Lipoprotein cholesterol Ratio (PHR) is a novel indicator of inflammatory response and metabolic disorders, linked to various chronic diseases. This study aims to investigate the relationship between PHR and hypertension.

Methods: Data from the National Health and Nutrition Examination Survey (NHANES), collected across seven consecutive cycles from 2005 to 2018, were analyzed.

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Doxorubicin (DOX) is a chemotherapy drug widely used in clinical settings, acting as a first-line treatment for various malignant tumors. However, its use is greatly limited by the cardiotoxicity it induces, including doxorubicin-induced cardiomyopathy (DIC). The mechanisms behind DIC are not fully understood, but its potential biological mechanisms are thought to include oxidative stress, inflammation, energy metabolism disorders, mitochondrial damage, autophagy, apoptosis, and ferroptosis.

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Heart failure is a complex syndrome characterized by progressive circulatory dysfunction, manifesting clinically as pulmonary and systemic venous congestion, alongside inadequate tissue perfusion. The early identification of HF, particularly at the mild and moderate stages (stages B and C), presents a clinical challenge due to the overlap of signs, symptoms, and natriuretic peptide levels with other cardiorespiratory pathologies. Nonetheless, early detection coupled with timely pharmacological intervention is imperative for enhancing patient outcomes.

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Renal cell carcinoma (RCC) is the most common form of kidney cancer in adults. Despite new therapeutic modalities, the outcomes for RCC patients remain unsatisfactory. Rho-associated coiled-coil forming protein kinase 2 (ROCK2) has previously been shown to be upregulated in RCC, and its expression was negatively correlated with patient survival.

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The lack of mutants due to the long periods between flowering of bamboo plants is one of the limiting factors inhibiting research progress in the culm development of bamboo plants. In this study, a stable new dwarf variant of (Moso bamboo), f. , was discovered and was characterized morphologically, anatomically, and physiologically.

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Following the publication of the above paper, a concerned reader drew to the Editor's attention that the "con" and "ox‑LDL" panels in Fig. 1E on p. 3602, and various data panels included in Figs.

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Increasing evidence suggests that immune cell infiltration is involved in primary Sjögren's syndrome (pSS), while the underlying molecular mechanisms remain elusive. Herein, this study aims to explore the key molecular mechanism in immune cell infiltration in pSS based on Gene Expression Omnibus (GEO) database. Differentially expressed genes (DEGs) were obtained, followed by weighted gene co-expression network analysis to acquire the pSS-related module genes.

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The TALE gene family is a subfamily of the homeobox gene family and has been implicated in regulating plant secondary growth. However, reports about the evolutionary history and function of the gene family in bamboo are limited. Here, the homeobox gene families of moso bamboo and were identified and compared.

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Background: The urgent problem in the treatment of breast cancer is the recurrence induced by breast cancer stem cells (CSCs). Understanding the role and molecular mechanism of specific molecules in breast cancer stem cells can provide a theoretical basis for better treatment. TRIP6 is an adapter protein which belongs to the zyxin family of LIM proteins and is important in regulating the functions of CSCs.

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The effect of CO rotational energy on bimolecular reactions to form electronically excited C2 is reported here. The reactions are initiated by CO multiphoton absorption of 800 nm light in strong optical fields using two different polarization configurations based on shaped chirped pulses. The observation of Swan band emission indicates that C2(d3Πg) is a reaction product.

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For the first time, a series of alkynyl carbon materials (ACMs) were prepared via the mechanochemical reaction of CaC with six polyhalogenated precursors, namely CCl, CCl, CCl, CCl, CBr, and CHBr (ACM-1, ACM-2, ACM-3, ACM-4, ACM-5, and ACM-6, respectively) and used for the adsorptive removal of mercury from aqueous solutions. Based on preliminary investigations, the adsorption of mercury on ACM-5 was studied in depth. Specifically, the effect of pH on mercury adsorptivity, adsorption kinetics, thermodynamics, isotherms, and recyclability was studied.

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Reported here are highly accurate, experimentally measured ro-vibrational transition intensities for the R-branch of the (20012) - (00001) CO band near = 2 μm. Measurements were performed by a frequency-stabilized cavity ring-down spectroscopy (FS-CRDS) instrument designed to achieve precision molecular spectroscopy in this important region of the infrared. Through careful control and traceable characterization of CO sample conditions, and through high-fidelity measurements spanning several months in time, we achieve relative standard uncertainties for the reported transition intensities between 0.

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RIZ1 has been studied as a tumor suppressor and may play a role in metabolic diseases related to the Western style diet, such as cancer and obesity. The Akt pathway is known to play a role in both cancer and obesity, and a link between Akt and RIZ1 has also been found. To better understand the role of RIZ1 in obesity and cancer, we investigated how RIZ1 regulates the expression of Akt3.

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High-precision measurements of radiocarbon (C) near or below a fraction modern C of 1 (FC ≤ 1) are challenging and costly. An accurate, ultrasensitive linear absorption approach to detecting C would provide a simple and robust benchtop alternative to off-site accelerator mass spectrometry facilities. Here we report the quantitative measurement of C in gas-phase samples of CO with FC < 1 using cavity ring-down spectroscopy in the linear absorption regime.

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The discovery of new carbon materials and the reactive activation of CaC are challenging subjects. In this study, a series of alkynyl carbon materials (ACMs) were synthesized by the interfacial mechanochemical reaction of CaC with four typical polyhalogenated hydrocarbons. Their properties and structures were characterized, and their electrochemical performances were examined.

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We report state-resolved collision dynamics for CO molecules prepared in an optical centrifuge and measured with high-resolution transient IR absorption spectroscopy. Time-resolved polarization-sensitive measurements of excited CO molecules in the J=29 rotational state reveal that the oriented angular momentum of CO rotors is relaxed by impulsive collisions. The translational energy gains for molecules in the initial plane of rotation are threefold larger than for randomized angular momentum orientations, indicating the presence of anisotropic kinetic energy.

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Mechanochemical destruction (MCD) is a good alternative to traditional incineration for the destruction of persistent organic pollutants (POPs), like hexachlorobenzene (HCB), and the key is to find an efficient co-milling reagent. Toward this aim, HCB was milled with various reagents in a planetary ball mill at room temperature, and CaC was found to be the best one. HCB can be destroyed completely within 20 min at a mass ratio of CaC/HCB = 0.

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High-finesse optical resonators found in ultrasensitive laser spectrometers utilize supermirrors ideally consisting of isotropic high-reflectivity coatings. Strictly speaking, however, the optical coatings are often non-uniformly stressed during the deposition process and therefore do possess some small amount of birefringence. When physically mounted the cavity mirrors can be additionally stressed in such a way that large optical birefringence is induced.

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An optical centrifuge pulse drives carbon dioxide molecules into ultrahigh rotational states with rotational frequencies of ω ≈ 32 THz based on the centrifuge frequency at the full width at half-maximum of the spectral chirp. High-resolution transient IR absorption spectroscopy is used to measure the time-evolution of translational and rotational energy for a number of states in the range of J = 0-100 at a sample pressure of 5-10 Torr. Transient Doppler profiles show that the products of super rotor collisions contain substantial amounts of translational energy, with J-dependent energies correlating to a range of ΔJ propensities.

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Oxidized low‑density lipoprotein (ox‑LDL) can increase the expression of adipophilin and the accumulation of intracellular lipid droplets. However, the detailed mechanisms remain to be fully elucidated. The present study aimed to investigate the mechanism underlying the effect of ox‑LDL on the expression of adipophilin and the accumulation of intracellular cholesterol esters.

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It has been reported that oxidized low-density lipoprotein (Ox-LDL) can increase the expression of adipophilin. However, the detailed mechanisms are not fully understood. The aim of this study was to investigate the mechanism of Ox-LDL on adipophilin expression and the intracellular lipid droplet accumulation.

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Objective: To construct prokaryotic fusion gene expression vector pET-30a/ltB-porB, express the recombinant fusion protein LTB-PorB and analyze the immunocompetence of the recombinant fusion protein in female BALB/c mice through intranasally immunization.

Methods: B subunit of Escherichia coli heat-labile enterotoxin (LTB) and Neisseria gonorrhoeae Porin B (PorB) fusion gene, LTB gene and PorB gene were cloned into prokaryotic vector pET-30a. The recombinants were identified by Polymerase Chain Reaction (PCR), enzyme digestion and DNA sequencing, and then expressed efficiently in Escherichia coli BL21 in the form of inclusion bodies.

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State-resolved energy gain profiles for "strong" and "weak" collisions of pyrazine (E = 37900 cm(-1)) and CO(2) are reported. Nascent energy profiles for scattered CO(2) (00(0)0, J = 2-64) were measured using high-resolution transient IR absorption spectroscopy at lambda = 2.7 microm.

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Article Synopsis
  • The study investigates the collision rates and energy transfer between HOD molecules and highly vibrationally excited 2-methylpyridine and 2,6-dimethylpyridine at specific energy levels.
  • High-resolution transient IR absorption measurements provide insights into the product state distributions of scattered HOD molecules, revealing similar energy distributions for both aromatic donors.
  • The energy transfer rates for HOD colliding with picoline and lutidine are found to be significantly higher than the expected Lennard-Jones collision rates, with substantial implications for hydrogen bonding interactions.
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