Search results for: Qing Zeng

Items from 1 to 20 out of 238 results

article

Resveratrol attenuates methamphetamine‐induced memory impairment via inhibition of oxidative stress and apoptosis in mice

Qing Zeng, Qi Xiong, Mei Zhou, Xiang Tian, more

Journal of Food Biochemistry > 45 > 2 > n/a - n/a

Methamphetamine (METH) abuse produces serious neurotoxicity to the central nervous system along with long‐term cognitive dysfunction. Resveratrol, a natural polyphenol, has broad application prospects in the treatment of neurodegenerative diseases. Therefore, this study was conducted to investigate whether resveratrol might alleviate METH‐induced memory deficits in vivo. We found that multiple exposures...

article

High‐resolution 2‐D NMR spectroscopy based on the Radon transform and pure shift technique for studying chemical shifts perturbations

Jinyong Chen, Qing Zeng, Dan Tian, Yanqin Lin, more

Magnetic Resonance in Chemistry > 59 > 3 > 346 - 353

Chemical shift plays an important role in molecular analysis. However, chemical shifts are influenced by temperature, solvent concentration, pressure, and so forth. Therefore, measuring chemical shift perturbations caused by these factors is helpful to molecular studies. A new form of 2‐D spectroscopy (projection spectroscopy) has been introduced whose indirect dimension is derived by implementing...

article

Development and validation of a simple‐to‐use nomogram for predicting refractory Mycoplasma pneumoniae pneumonia in children

Siying Cheng, Jilei Lin, Xuexiang Zheng, Li Yan, more

Pediatric Pulmonology > 55 > 4 > 968 - 974

Objective This study aimed to develop and validate a simple‐to‐use nomogram for predicting refractory Mycoplasma pneumoniae pneumonia (RMPP) in children. Methods A total of 73 children with RMPP and 146 children with general Mycoplasma pneumoniae pneumonia were included. Clinical, laboratory, and radiological data were obtained. A least absolute shrinkage and selection operator (LASSO) regression...

article

Ganoderma lucidum polysaccharide reduces melanogenesis by inhibiting the paracrine effects of keratinocytes and fibroblasts via IL‐6/STAT3/FGF2 pathway

Ling Jiang, Jinhua Huang, Jianyun Lu, Shuanghai Hu, more

Journal of Cellular Physiology > 234 > 12 > 22799 - 22808

Our previous study found that Ganoderma lucidum polysaccharide (GLP), bioactive ingredients from Ganoderma lucidum, protected fibroblasts from photoaging. However, whether GLP can affect melanogenesis in melanocytes through regulating paracrine mediators that secreted by keratinocytes and fibroblasts is unclear. We aimed to investigate the efficacy and mechanisms of action of GLP in melanogenesis...

article

Bio-derived N-doped porous carbon as sulfur hosts for high performance lithium sulfur batteries

Yan-yan Liu, Li-jing Yan, Xian-qing Zeng, Ze-heng Li, more

Journal of Central South University > 2019 > 26 > 6 > 1426-1434

Shuttle effect, poor conductivity and large volume expansion are the main factors that hinder the practical application of sulfur cathodes. Currently, rational structure designing of carbon-based sulfur hosts is the most effective strategy to address the above issues. However, the preparation process of carbon-based sulfur hosts is usually complex and costly. Therefore, it is necessary to develop...

article

Analysis and preliminary validation of the molecular mechanism of fat deposition in fatty and lean pigs by high-throughput sequencing

Jing Xiang Cui, Qi Fan Zeng, Wei Chen, Hong Zhang, more

Mammalian Genome > 2019 > 30 > 3-4 > 71-80

Fat deposition in muscle includes intramuscular fat (IMF) and intermuscular fat. IMF content is an index of pork quality; however, because IMF content is difficult to measure in vivo in young animals, conventional breeding for IMF content is difficult to carry out. The mechanism and progression of animal fat deposition is not well understood, and there are currently no effective control methods. In...

article

Detecting Secular Trends in Clinical Treatment through Temporal Analysis

Douglas Redd, Yijun Shao, Yan Cheng, Qing Zeng-Treitler

Journal of Medical Systems > 2019 > 43 > 3 > 1-7

Medical treatments change over time for multiple reasons, including introduction of new treatments, availability of new scientific evidence, change in institutional guidelines, and market efforts by pharmaceutical and medical device companies. Monitoring and analyzing these secular trends will also inform the evaluation of evidence based practice as well as outcome research. Using a large national...

article

Development of a cardiac-centered frailty ontology

Kristina Doing-Harris, Bruce E. Bray, Anne Thackeray, Rashmee U. Shah, more

Journal of Biomedical Semantics > 2019 > 10 > 1 > 1-16

Background A Cardiac-centered Frailty Ontology can be an important foundation for using NLP to assess patient frailty. Frailty is an important consideration when making patient treatment decisions, particularly in older adults, those with a cardiac diagnosis, or when major surgery is a consideration. Clinicians often report patient’s frailty in progress notes and other documentation. Frailty is recorded...

article

An efficient prototype method to identify and correct misspellings in clinical text

T. Elizabeth Workman, Yijun Shao, Guy Divita, Qing Zeng-Treitler

BMC Research Notes > 2019 > 12 > 1 > 1-5

Objective Misspellings in clinical free text present challenges to natural language processing. With an objective to identify misspellings and their corrections, we developed a prototype spelling analysis method that implements Word2Vec, Levenshtein edit distance constraints, a lexical resource, and corpus term frequencies. We used the prototype method to process two different corpora, surgical pathology...

article

Microvesicles derived from human bone marrow mesenchymal stem cells promote U2OS cell growth under hypoxia: the role of PI3K/AKT and HIF-1α

Shanshan Lin, Bo Zhu, Guozhi Huang, Qing Zeng, more

Human Cell > 2019 > 32 > 1 > 64-74

Studies have demonstrated that mesenchymal stem cells (MSCs) can promote tumor growth, and MSC microvesicles (MVs) are very important in the tumor microenvironment and information transfer between cells during tumorigenesis and development. However, the potential effects and mechanisms of MSC-MVs on tumor growth are still controversial. Here in this study, we investigated the roles and effects of...

article

Effect of exogenous γ-aminobutyric acid treatment on the enzymatic browning of fresh-cut potato during storage

Haiyan Gao, Qing Zeng, Zhengnan Ren, Peizhong Li, more

Journal of Food Science and Technology > 2018 > 55 > 12 > 5035-5044

The aim of this study was to evaluate the effect of γ-aminobutyric acid (GABA) treatment on the enzymatic browning of fresh-cut potatoes. The browning index and activities of browning and defense-related enzymes were analyzed after 0, 1, 2, 3, 4, 5, and 6 days of storage at 4 °C. The results showed that the treatment with 20 g/L GABA for 10 min significantly retarded the browning of fresh-cut potatoes...

article

Telmisartan attenuates kidney apoptosis and autophagy-related protein expression levels in an intermittent hypoxia mouse model

Xiao-Bin Zhang, Jing-Huang Cai, Yu-Yun Yang, Yi-Ming Zeng, more

Sleep and Breathing > 2019 > 23 > 1 > 341-348

Purpose Obstructive sleep apnea (OSA) is associated with renal impairs. As a novel pathophysiological hallmark of OSA, chronic intermittent hypoxia (CIH) enhances apoptosis and autophagy. The present study aims to evaluate the effect of telmisartan on CIH-induced kidney apoptosis and autophagy in a mouse model of OSA. Materials and methods Mice were randomly allocated to normoxia, CIH, and CIH+telmisartan...

article

Relationships between ultimate pH and antioxidant enzyme activities and gene expression in pork loins

Jin Wang, Qi‐fan Zeng, Hui Wang, Wei Chen, more

Animal Science Journal > 89 > 9 > 1331 - 1338

Ultimate pH (pH_u) is a major determinant factor of meat quality. In this study, we investigated the effects of pH_u on the muscle antioxidant capacity, and the relationship between pH_u and muscle antioxidant capacity of pigs. A total of 137 pigs from three pig breeds with the same feeding condition were slaughtered and used to measure the pH_u, superoxide dismutase (SOD), glutathione peroxidase (GSH‐PX),...

article

Use of ESI FT–ICR MS to investigate molecular transformation in simulated aerobic biodegradation of a sulfur-rich crude oil

Weimin Liu, Yuhong Liao, Yinhua Pan, Bin Jiang, more

Organic Geochemistry > 2018 > 123 > C > 17-26

Achieving an understanding of the biodegradation of organic sulfur compound(s) (OSC) in crude oils has been hampered by limitations in separation methods and analytical techniques. In this study, a simulated aerobic biodegradation experiment was performed on a sulfur-rich crude oil, from which a series of biodegraded oils from slight to moderate degrees of biodegradation were obtained. Molecular transformations...

article

A localized lagrange multipliers approach for the problem of vehicle-bridge-interaction

Qing Zeng, Charikleia D. Stoura, Elias G. Dimitrakopoulos

Engineering Structures > 2018 > 168 > C > 82-92

This paper proposes a time-integration analysis scheme for the vehicle-bridge-interaction problem. Key feature is the introduction of artificial auxiliary contact points between the wheels and the bridge deck elements in contact. The artificial points allow the formulation of two sets of kinematic constraints and two sets of contact forces (i.e. localized Lagrange multipliers), between the vehicle...

article

The coordinated operation of electricity, gas and district heating systems

Qing Zeng, Jiakun Fang, Baohua Zhang, Zhe Chen

Energy Procedia > 2018 > 145 > C > 307-312

This paper focuses on the coordinated operation of the electricity, gas and district heating systems in urban areas where multi-energy systems belong to a single entity. The energy conversions among these three systems are scheduled simultaneously so that the demands of the three systems could be met at the least operation cost and maximum social welfare. A nonlinear optimization problem is formulated...

article

Phytoremediation of Mn-contaminated paddy soil by two hyperaccumulators (Phytolacca americana and Polygonum hydropiper) aided with citric acid

Qing-wei Yang, Hua-ming Ke, Shou-jiang Liu, Qing Zeng

Environmental Science and Pollution Research > 2018 > 25 > 26 > 25933- 25941

The purpose of this study was to investigate the phytoremediation potential of two hyperaccumulator plants, Phytolacca americana L. and Polygonum hydropiper L., on manganese-contaminated paddy soils. The biomass growth, Mn concentrations in plant tissues, and potential Mn removal efficiency from soils of these two plants were studied with citric acid, and the mechanisms of citric acid on these two...

article

Vehicle–bridge interaction analysis modeling derailment during earthquakes

Qing Zeng, Elias G. Dimitrakopoulos

Nonlinear Dynamics > 2018 > 93 > 4 > 2315-2337

A realistic simulation of train derailment is crucial when assessing the safety of a train running over a bridge during earthquake excitation. This paper presents a seismic vehicle–bridge interaction analysis that simulates directly different wheel–rail contact states including flange contact, detachment, uplifting, wheel–rail climbing-up, recontact, and ultimately, derailment. The proposed model...

article

A Facile and Environmentally Friendly One-Pot Synthesis of Pt Surface-Enriched Pt-Pd(x)/C Catalyst for Oxygen Reduction

Yuying Zheng, Lei Zhang, Peishan He, Dai Dang, more

Electrocatalysis > 2018 > 9 > 4 > 495-504

Platinum surface-enriched bimetallic PtPd nanoparticles are synthesized via a facile and eco-friendly approach. Significantly different formation processes of single Pt, Pd, and bimetallic PtPd nanoparticles under various conditions have been monitored by UV-visible spectra. The size of the bimetallic Pt-Pd nanoparticles has been found to be significantly affected by the pH of the starting precursor...

article

Substituent effects on gas‐phase homolytic Fe–N bond energies of m‐G‐C₆H₄NHFe(CO)₂(η⁵‐C₅H₅) and m‐G‐C₆H₄N(COMe)Fe(CO)₂(η⁵‐C₅H₅) studied using density functional theory methods

Qing Zeng, Zucheng Li, Yi‐Bo Wang

Journal of Physical Organic Chemistry > 31 > 4 > n/a - n/a

One of the most fundamental properties in chemistry is the bond dissociation energy, the energy required to break a specific bond of a molecule. In this paper, the Fe–N homolytic bond dissociation energies [ΔH_homo(Fe–N)'s] of 2 series of (meta‐substituted anilinyl)dicarbonyl(η⁵‐cyclopentadienyl) iron [m‐G‐C₆H₄NHFp (1)] and (meta‐substituted α‐acetylanilinyl)dicarbonyl(η⁵‐cyclopentadienyl) iron [m‐G‐C...

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INFONA - science communication portal

Search results for: Qing Zeng

Resveratrol attenuates methamphetamine‐induced memory impairment via inhibition of oxidative stress and apoptosis in mice

High‐resolution 2‐D NMR spectroscopy based on the Radon transform and pure shift technique for studying chemical shifts perturbations

Development and validation of a simple‐to‐use nomogram for predicting refractory Mycoplasma pneumoniae pneumonia in children

Ganoderma lucidum polysaccharide reduces melanogenesis by inhibiting the paracrine effects of keratinocytes and fibroblasts via IL‐6/STAT3/FGF2 pathway

Bio-derived N-doped porous carbon as sulfur hosts for high performance lithium sulfur batteries

Analysis and preliminary validation of the molecular mechanism of fat deposition in fatty and lean pigs by high-throughput sequencing

Detecting Secular Trends in Clinical Treatment through Temporal Analysis

Development of a cardiac-centered frailty ontology

An efficient prototype method to identify and correct misspellings in clinical text

Microvesicles derived from human bone marrow mesenchymal stem cells promote U2OS cell growth under hypoxia: the role of PI3K/AKT and HIF-1α

Effect of exogenous γ-aminobutyric acid treatment on the enzymatic browning of fresh-cut potato during storage

Telmisartan attenuates kidney apoptosis and autophagy-related protein expression levels in an intermittent hypoxia mouse model

Relationships between ultimate pH and antioxidant enzyme activities and gene expression in pork loins

Use of ESI FT–ICR MS to investigate molecular transformation in simulated aerobic biodegradation of a sulfur-rich crude oil

A localized lagrange multipliers approach for the problem of vehicle-bridge-interaction

The coordinated operation of electricity, gas and district heating systems

Phytoremediation of Mn-contaminated paddy soil by two hyperaccumulators (Phytolacca americana and Polygonum hydropiper) aided with citric acid

Vehicle–bridge interaction analysis modeling derailment during earthquakes

A Facile and Environmentally Friendly One-Pot Synthesis of Pt Surface-Enriched Pt-Pd(x)/C Catalyst for Oxygen Reduction

Substituent effects on gas‐phase homolytic Fe–N bond energies of m‐G‐C₆H₄NHFe(CO)₂(η⁵‐C₅H₅) and m‐G‐C₆H₄N(COMe)Fe(CO)₂(η⁵‐C₅H₅) studied using density functional theory methods

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