Search results for: Zongwei Cai

Items from 1 to 20 out of 224 results

article

Emerging environmental pollutants hydroxylated polybrominated diphenyl ethers: From analytical methods to toxicology research

Juntong Wei, Li Xiang, Zongwei Cai

Mass Spectrometry Reviews > 40 > 3 > 255 - 279

Hydroxylated polybrominated diphenyl ethers (OH‐PBDEs) are of particular concern due to their ubiquitous distribution and adverse health effects. Significant progress has been made in the characterization of OH‐PBDEs by using mass spectrometry (MS). In this review, we summarize applications of MS‐based techniques in detection, environmental and biota distribution, and potential health risk effects,...

article

Arabidopsis DXO1 possesses deNADding and exonuclease activities and its mutation affects defense‐related and photosynthetic gene expression

Shuying Pan, Kai‐en Li, Wei Huang, Huan Zhong, more

Journal of Integrative Plant Biology > 62 > 7 > 967 - 983

RNA capping and decapping tightly coordinate with transcription, translation, and RNA decay to regulate gene expression. Proteins in the DXO/Rai1 family have been implicated in mRNA decapping and decay, and mammalian DXO was recently found to also function as a decapping enzyme for NAD⁺‐capped RNAs (NAD‐RNA). The Arabidopsis genome contains a single gene encoding a DXO/Rai1 protein, AtDXO1. Here we...

article

Determination of hormones in human urine by ultra‐high‐performance liquid chromatography/triple‐quadrupole mass spectrometry

Yanqiu Zhou, Zongwei Cai

Rapid Communications in Mass Spectrometry > 34 > S1 > n/a - n/a

Steroid hormones play a critical role in maintaining the homeostasis of human metabolism. Urine as a noninvasive sample has been extensively used in clinical diagnosis for hormones homeostasis. In this study, the simultaneous characterization of fourteen hormones in urine was performed based on ultra‐high‐performance liquid chromatography/electrospray ionization tandem mass spectrometry (UPHLC/ESI(+)‐MS/MS)...

article

In situ analysis of oxytetracycline tablets based on matrix‐assisted laser desorption/ionization mass spectrometry imaging

Hanyi Xie, Qichuan He, Yanfang Zhao, Huijuan Li, more

Rapid Communications in Mass Spectrometry > 34 > 4 > n/a - n/a

Rationale A thorough understanding of the content and distribution of active ingredients in pharmaceuticals is essential for drug efficacy and safety. Technological advancements in mass spectrometry imaging present an opportunity for methodological innovation by providing qualification and quantification analysis, as well as spatial information, in the same assay, which has great potential for applications...

article

Core-shell hollow spheres of type C@MoS₂ for use in surface-assisted laser desorption/ionization time of flight mass spectrometry of small molecules

Yanfang Zhao, Hanyi Xie, Mei Zhao, Huijuan Li, more

Microchimica Acta > 2019 > 186 > 12 > 1-9

Mesoporous carbon hollow spheres coated with MoS₂ (C@MoS₂) were synthesized to obtain a material with large specific surface area, fast electron transfer efficiency and good water dispersibility. The composite material was applied as a matrix for the analysis of small molecules by surface-assisted laser desorption/ionization time-of-flight mass spectrometry (SALDI-TOF MS). The use of a core-shell...

article

Acute exposure to triphenyl phosphate inhibits the proliferation and cardiac differentiation of mouse embryonic stem cells and zebrafish embryos

Zenghua Qi, Min Chen, Yuanyuan Song, Xiya Wang, more

Journal of Cellular Physiology > 234 > 11 > 21235 - 21248

Attention has recently paid to the interaction of triphenyl phosphate (TPHP) and body tissues, particularly within the reproductive and development systems, due to its endocrine‐disrupting properties. However, the acute effects of TPHP on early embryonic development remain unclear. Here, we used mouse embryonic stem cells (mESC) and zebrafish embryos to investigate whether TPHP is an embryo toxicant...

article

Performance of atmospheric pressure gas chromatography-tandem mass spectrometry for the analysis of organochlorine pesticides in human serum

Jing Fang, Hongzhi Zhao, Yanhao Zhang, Yu He, more

Analytical and Bioanalytical Chemistry > 2019 > 411 > 18 > 4185-4191

A novel method of atmospheric pressure gas chromatography-tandem mass spectrometry (APGC-MS/MS) for the analysis of organochlorine pesticides (OCPs) in human serum was developed. Better sensitivity and selectivity were achieved compared to conventional gas chromatography-mass spectrometry (GC-MS) and GC-MS/MS. The limits of detection (LODs) of OCPs ranged from 0.22 to 0.90 pg/mL for the analysis in...

article

Mesoporous graphitic carbon nitride as an efficient sorbent for extraction of sulfonamides prior to HPLC analysis

Jing Zhang, Wenqi Li, Wenli Zhu, Yixin Yang, more

Microchimica Acta > 2019 > 186 > 5 > 1-9

Mesoporous graphitic carbon nitride (MCN) is shown to be a viable sorbent for the enrichment of sulfonamides (SAs). To overcome the difficulty of separating the sorbent from the matrix, a novel type kind of column-assisted dispersive solid-phase extraction (CA-dSPE) method was designed. The MCN was characterized by scanning electron microscopy, high-resolution transmission electron microscopy, X-ray...

article

Analysis of Nitropolycyclic Aromatic Hydrocarbons in Fine Particulate Matter by Matrix-Assisted Laser Desorption/Ionization Time-of-Flight Mass Spectrometry Using Fe₃O₄/ZIF-8 Magnetic Nanocomposites as Matrix

Haojiang Wang, Xuan Wang, Wei Bian, Tijian Sun, more

Journal of Applied Spectroscopy > 2019 > 86 > 1 > 89-95

Core-shell magnetic metal organic nanocrystals were synthesized and used as matrix for matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS). Four nitropolycyclic aromatic hydrocarbons (nitro-PAHs) were successfully detected by using negative-ion MALDI-TOF MS without background interference. Furthermore, the magnetic nanocomposites (MNCs) coated with zeolitic...

article

Analysis of transcriptional response in zebrafish eleutheroembryos exposed to climbazole: Signaling pathways and potential biomarkers

Hui Zhang, Zhi‐Feng Chen, Zenghua Qi, Shi‐Chao Yan, more

Environmental Toxicology and Chemistry > 38 > 4 > 794 - 805

Climbazole is an antifungal active ingredient used in personal care products. After application this chemical reaches the aquatic environment and may pose a risk to fish. In the present study, we measured the transcriptional effects of essential genes related to a wide range of signaling pathways on zebrafish eleutheroembryos exposed to climbazole at environmentally relevant and predicted worst‐case...

article

Mass spectrometry‐based metabolomics: Targeting the crosstalk between gut microbiota and brain in neurodegenerative disorders

Hemi Luan, Xian Wang, Zongwei Cai

Mass Spectrometry Reviews > 38 > 1 > 22 - 33

Metabolomics seeks to take a “snapshot” in a time of the levels, activities, regulation and interactions of all small molecule metabolites in response to a biological system with genetic or environmental changes. The emerging development in mass spectrometry technologies has shown promise in the discovery and quantitation of neuroactive small molecule metabolites associated with gut microbiota and...

article

Simultaneous determination of amino acids, purines and derivatives in serum by ultrahigh‐performance liquid chromatography/tandem mass spectrometry

Yuanyuan Zheng, Xiaona Li, Xiangfeng Chen, Zongwei Cai, more

Rapid Communications in Mass Spectrometry > 33 > 1 > 81 - 88

Rationale Amino acids, purines and derivatives play a key role in physiological and pathological processes, such as the development of gestational diabetes mellitus. However, little literature has reported the simultaneous quantification of amino acids and purines. Therefore, a reliable and robust method for the determination of amino acids and purines is necessary. Methods A rapid and simple method...

article

Reduced carbon nanodots as a novel substrate for direct analysis of bisphenol analogs in surface assisted laser desorption/ionization time of flight mass spectrometry

Wenjing Lu, Ruijin Li, Shaomin Shuang, Chuan Dong, more

Talanta > 2018 > 190 > C > 89-94

Carbon dots (CDs) have attracted much attention in a variety of fields owing to the diversified properties. However, the control of the structure and surface function of CDs are still urgent issues to be addressed for using it in specific application. Herein, the reduced state of carbon nanodots (R-CDs) has been produced through a convenient strategy by reduction of the pure carbon dots products,...

article

Effects of Ambient Atmospheric PM_2.5, 1-Nitropyrene and 9-Nitroanthracene on DNA Damage and Oxidative Stress in Hearts of Rats

Lifang Zhao, Li Zhang, Minghui Chen, Chuan Dong, more

Cardiovascular Toxicology > 2019 > 19 > 2 > 178-190

Exposure to fine particulate matter (PM_2.5) increased the risks of cardiovascular diseases. PM_2.5-bound 1-nitropyrene (1-NP) and 9-nitroanthracene (9-NA) are released from the incomplete combustion of fossil fuels and derived from polycyclic aromatic hydrocarbons (PAHs). The toxicities of 1-NP and 9-NA are mainly reflected in their carcinogenicity and mutagenicity. However, studies of PM_2.5-bound...

article

Determination of intracellular metabolites concentrations in Escherichia coli under nutrition stress using liquid chromatography-tandem mass spectrometry

Fenfen Ji, Yang Shen, Leihan Tang, Zongwei Cai

Talanta > 2018 > 189 > C > 1-7

Cells show a timely and appropriate physiological adjustment on all levels of cellular activities in response to nutrient stress. However, the regulations for cells under different carbon/nitrogen influxes are poorly understood. To unveil a fully metabolic regulatory profile, we applied a mass spectrometry based “bottom-up” approach to investigate the metabolic response of Escherichia coli to nutrient...

article

Liquid chromatography-mass spectrometry-based metabolomics and lipidomics reveal toxicological mechanisms of bisphenol F in breast cancer xenografts

Chao Zhao, Peisi Xie, Hailin Wang, Zongwei Cai

Journal of Hazardous Materials > 2018 > 358 > C > 503-507

Bisphenol F (BPF) is a major alternative to bisphenol (BPA) and has been widely used. Although BPA exposure is known to generate various toxic effects, toxicity of BPF remains under-explored. A comprehensive method involving mass spectrometry (MS)-based global lipidomics and metabolomics, and matrix-assisted laser desorption/ionization-mass spectrometry (MALDI)- MS imaging (MSI) was used to study...

article

Contamination and risk profiles of triclosan and triclocarban in sediments from a less urbanized region in China

Zhi-Feng Chen, Hong-Biao Wen, Xiaoxin Dai, Shi-Chao Yan, more

Journal of Hazardous Materials > 2018 > 357 > C > 376-383

Triclosan and triclocarban are priority environmental contaminants of increasing concern to environmental health. After application, the chemicals enter the aquatic environment and easily distribute in bed sediment due to their hydrophobicity, and thus pose potential ecological risks. This study investigated the distribution and risks of triclosan and triclocarban in the sediment environment of a...

article

Negative ion laser desorption/ionization time‐of‐flight mass spectrometric analysis of small molecules by using nanostructured substrate as matrices

Zian Lin, Zongwei Cai

Mass Spectrometry Reviews > 37 > 5 > 681 - 696

Matrix‐assisted laser desorption/ionization time‐of‐flight mass spectrometry (MALDI‐TOF MS) is an excellent analytical technique for rapid and sensitive analysis of macromolecules such as polymers and proteins. However, the main drawback of MALDI‐TOF MS is its difficulty to detect small molecules with mass below 700 Da because of the intensive interference from MALDI matrix in the low mass region...

article

Identification of glycerophospholipid fatty acid remodeling by using mass spectrometry imaging in bisphenol S induced mouse liver

Chao Zhao, Peisi Xie, Ti Yang, Hailin Wang, more

Chinese Chemical Letters > 2018 > 29 > 8 > 1281-1283

Bisphenol A (BPA) plays an important role in metabolic disorders. As a major alternative to BPA, it is unclear whether the exposure of bisphenol S (BPS) may result in lipidome disturbance. Using a mouse model, we investigated the effects of BPS exposure on metabolism and spatial distribution of lipids by using lipidomics analysis and matrix-assisted laser desorption/ionization (MALDI)-mass spectrometry...

article

Identification of different hemagglutinin isoforms of influenza A virus H1N1

Hanzhi Wu, Ningning Sun, Wenjun Song, Lin Zhu, more

Rapid Communications in Mass Spectrometry > 32 > 16 > 1372 - 1378

Rationale Influenza A viruses (IAVs) are still a threat to human health and life. The process of virus infection involves a series of biological regulations, such as signal transduction, that may be closely linked with the function of glycoproteins. However, the number and level of glycoproteins is low compared with other proteins in the whole protein pool. Methods Viruses obtained from chicken...

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INFONA - science communication portal

Search results for: Zongwei Cai

Emerging environmental pollutants hydroxylated polybrominated diphenyl ethers: From analytical methods to toxicology research

Arabidopsis DXO1 possesses deNADding and exonuclease activities and its mutation affects defense‐related and photosynthetic gene expression

Determination of hormones in human urine by ultra‐high‐performance liquid chromatography/triple‐quadrupole mass spectrometry

In situ analysis of oxytetracycline tablets based on matrix‐assisted laser desorption/ionization mass spectrometry imaging

Core-shell hollow spheres of type C@MoS₂ for use in surface-assisted laser desorption/ionization time of flight mass spectrometry of small molecules

Acute exposure to triphenyl phosphate inhibits the proliferation and cardiac differentiation of mouse embryonic stem cells and zebrafish embryos

Performance of atmospheric pressure gas chromatography-tandem mass spectrometry for the analysis of organochlorine pesticides in human serum

Mesoporous graphitic carbon nitride as an efficient sorbent for extraction of sulfonamides prior to HPLC analysis

Analysis of Nitropolycyclic Aromatic Hydrocarbons in Fine Particulate Matter by Matrix-Assisted Laser Desorption/Ionization Time-of-Flight Mass Spectrometry Using Fe₃O₄/ZIF-8 Magnetic Nanocomposites as Matrix

Analysis of transcriptional response in zebrafish eleutheroembryos exposed to climbazole: Signaling pathways and potential biomarkers

Mass spectrometry‐based metabolomics: Targeting the crosstalk between gut microbiota and brain in neurodegenerative disorders

Simultaneous determination of amino acids, purines and derivatives in serum by ultrahigh‐performance liquid chromatography/tandem mass spectrometry

Reduced carbon nanodots as a novel substrate for direct analysis of bisphenol analogs in surface assisted laser desorption/ionization time of flight mass spectrometry

Effects of Ambient Atmospheric PM_2.5, 1-Nitropyrene and 9-Nitroanthracene on DNA Damage and Oxidative Stress in Hearts of Rats

Determination of intracellular metabolites concentrations in Escherichia coli under nutrition stress using liquid chromatography-tandem mass spectrometry

Liquid chromatography-mass spectrometry-based metabolomics and lipidomics reveal toxicological mechanisms of bisphenol F in breast cancer xenografts

Contamination and risk profiles of triclosan and triclocarban in sediments from a less urbanized region in China

Negative ion laser desorption/ionization time‐of‐flight mass spectrometric analysis of small molecules by using nanostructured substrate as matrices

Identification of glycerophospholipid fatty acid remodeling by using mass spectrometry imaging in bisphenol S induced mouse liver

Identification of different hemagglutinin isoforms of influenza A virus H1N1

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