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Zhang Y, Shen Y, Zhang H, Wang L, Zhang H, Qian H, Qi X. Isolation, purification and identification of two antioxidant peptides from water hyacinth leaf protein hydrolysates (WHLPH). Eur Food Res Technol 2017. [DOI: 10.1007/s00217-017-2941-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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252
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Liu M, Hu B, Zhang H, Zhang Y, Wang L, Qian H, Qi X. Inhibition study of red rice polyphenols on pancreatic α-amylase activity by kinetic analysis and molecular docking. J Cereal Sci 2017. [DOI: 10.1016/j.jcs.2017.04.011] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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253
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Kopec JA, Cibere J, Li LC, Zhang C, Barber M, Qian H, Wong H, Steininger G, Prlic H, Simatovic J, Ratzlaff C, Sayre EC, Ye J, Forster BB, Esdaile JM. Relationship between physical activity and hip pain in persons with and without cam or pincer morphology: a population-based case-control study. Osteoarthritis Cartilage 2017; 25:1055-1061. [PMID: 28219714 DOI: 10.1016/j.joca.2017.02.795] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Revised: 02/08/2017] [Accepted: 02/14/2017] [Indexed: 02/02/2023]
Abstract
OBJECTIVES The purpose of the study was to determine if physical activity (PA) is a risk factor for persistent or recurrent hip pain in young and middle-aged persons with and without radiographic findings of cam or pincer morphology (CPM). METHODS A population sample of persons aged 20-49 with (cases) and without (controls) hip pain in Metro Vancouver, Canada, was selected through random digit dialing (RDD). Self-reported PA was expressed as average energy expenditure (MET-hours) per year, over lifetime. CPM was defined as alpha angle >55°, lateral centre edge angle (LCE) >40°, or positive cross-over sign. RESULTS Data were obtained for 500 subjects, 269 cases and 231 controls. Prevalence of radiographic CPM was 49% in the cases and 44% in the controls. In a logistic regression model adjusted for age, gender and CPM, total lifetime PA, including occupational, domestic and recreational activities, was significantly associated with hip pain (Odds ratio (OR) 1.30 per 1000 MET-hours, 95% CI 1.15-1.38). The effect of total PA was observed in those with CPM (1.44, 1.17-1.78) and without CPM (1.23, 1.04-1.45). For domestic activities, the association was seen only in those with CPM (significant interaction). When PA was categorized into quartiles, higher levels of PA were associated with a greater risk of pain. CONCLUSIONS PA, as measured by average energy expenditure over lifetime is a risk factor for hip pain in young and middle-aged persons. For some activities, the risk is likely increased in persons with radiographic evidence of CPM.
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Gao F, Gao Y, Zhang SJ, Zhe X, Meng FL, Qian H, Zhang B, Li YJ. Alteration of plasma cytokines in patients with active epilepsy. Acta Neurol Scand 2017; 135:663-669. [PMID: 27593211 DOI: 10.1111/ane.12665] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/05/2016] [Indexed: 12/25/2022]
Abstract
OBJECTIVE Emerging evidence suggests that inflammatory cytokines are involved in pathophysiology of epilepsy. However, possible interaction between the cytokines and active epilepsy remains unclear. This study aimed to interictal and postictal plasma cytokines in active epilepsy patients. MATERIALS AND METHODS We enrolled 48 patients with active epilepsy and 30 healthy adults and measured postictal and interictal interleukin-1β (IL-1β), interleukin-6 (IL-6), tumor necrosis factor-alpha (TNF-α), interferon gamma (IFN-γ), interleukin-10 (IL-10), and interleukin-17A (IL-17A) concentrations in peripheral blood by enzyme-linked immunosorbent assay (ELISA). RESULTS We found postictal and interictal concentrations of IL-6, IL-17A, and IFN-γ were significantly elevated in epilepsy patients compared with healthy controls. There were no significant postictal and interictal alterations of IL-1β, IL-6, TNF-α, IFN-γ, IL-10, and IL-17A in patients with generalized seizures compared to those with partial seizures, in carbamazepine (CBZ)-treated patients compared to valproic acid (VPA)-treated patients or in temporal lobe epilepsy (TLE) patients compared to extra-temporal lobe epilepsy (eTLE) patients. Furthermore, multivariate linear regression analysis revealed that interictal IL-17A concentration positively correlated with National Hospital Seizure Severity Scale (NHS3) scores (B=0.092, P=.007) and seizure frequency (B=0.045, P=.000). Interictal IFN-γ concentration was also showed positively correlation with seizure frequency (B=0.019, P=.004). CONCLUSIONS Our data suggest that postictal and interictal various inflammatory cytokines are elevated in plasma of active epilepsy patients. Furthermore, interictal IL-17A and IFN-γ may predict seizure severity.
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Cao X, Zhou S, Yi C, Wang L, Qian H, Zhang H, Qi X. Effect of whole wheat flour on the quality, texture profile, and oxidation stability of instant fried noodles. J Texture Stud 2017; 48:607-615. [DOI: 10.1111/jtxs.12274] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Revised: 02/27/2017] [Accepted: 04/22/2017] [Indexed: 11/28/2022]
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256
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Li X, Zhou Y, Qian H. CCAT1 expressed in malignant and pre-malignant human gastric tissues. ACTA ACUST UNITED AC 2017; 63:89-93. [PMID: 28719351 DOI: 10.14715/cmb/2017.63.5.16] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Revised: 04/19/2017] [Accepted: 04/19/2017] [Indexed: 11/18/2022]
Abstract
CCAT1 has been reported to implicate in various human malignancies. However, its expression in the oncogenesis of gastric cancer (GC) remains unknown. Quantitative reverse transcription (RT)-qPCR assay was performed to detect the expression of CCAT1 in 68cases of GC tissues,paired tumor-proximal gastric mucosa and normal gastric mucosa, 19 cases of gastric intraepithelial neoplasia (GIN), and the sera of these 68 GC patients and 22 healthy volunteers. And the relationship between CCAT1 and clinicopathologic features of GC patients were analyzed. Inthe present study, we found that CCAT1 expression was significantly abnormally deregulated in GC tissues (185.43 ± 21.37), GIN tissues (121.30 ± 43.61), tumor-proximal mucosa (8.9 ± 1.21), and normal mucosa (1.5 ± 0.55). CCAT1 wasalso overexpressed in the sera of GC patients (47.40 ± 6.60) compared with healthy controls (0.62 ± 0.06; p < 0.001). And high CCAT1 expression in GC tissues was associated with high tumor burden, including larger tumor size, lymphatic metastasis and advanced TNM stage (all p < 0.05). These results reveal that CCAT1 is a detectable biomarkerforgastric cancertumorigenesis and may be utilized as adiagnosticand prognosticindicator.
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Song H, Lavoie M, Fan X, Tan H, Liu G, Xu P, Fu Z, Paerl HW, Qian H. Allelopathic interactions of linoleic acid and nitric oxide increase the competitive ability of Microcystis aeruginosa. ISME JOURNAL 2017; 11:1865-1876. [PMID: 28398349 PMCID: PMC5520033 DOI: 10.1038/ismej.2017.45] [Citation(s) in RCA: 86] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Revised: 01/15/2017] [Accepted: 02/16/2017] [Indexed: 12/02/2022]
Abstract
The frequency and intensity of cyanobacterial blooms are increasing worldwide with major societal and economic costs. Interactions between toxic cyanobacteria and eukaryotic algal competitors can affect toxic bloom formation, but the exact mechanisms of interspecies interactions remain unknown. Using metabolomic and proteomic profiling of co-cultures of the toxic cyanobacterium Microcystis aeruginosa with a green alga as well as of microorganisms collected in a Microcystis spp. bloom in Lake Taihu (China), we disentangle novel interspecies allelopathic interactions. We describe an interspecies molecular network in which M. aeruginosa inhibits growth of Chlorella vulgaris, a model green algal competitor, via the release of linoleic acid. In addition, we demonstrate how M. aeruginosa takes advantage of the cell signaling compound nitric oxide produced by C. vulgaris, which stimulates a positive feedback mechanism of linoleic acid release by M. aeruginosa and its toxicity. Our high-throughput system-biology approach highlights the importance of previously unrecognized allelopathic interactions between a broadly distributed toxic cyanobacterial bloom former and one of its algal competitors.
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Jin Y, Chen S, Fan X, Song H, Li X, Xu J, Qian H. Diuron treatment reveals the different roles of two cyclic electron transfer pathways in photosystem II in Arabidopsis thaliana. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2017; 137:15-20. [PMID: 28364799 DOI: 10.1016/j.pestbp.2016.09.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Revised: 09/02/2016] [Accepted: 09/11/2016] [Indexed: 05/11/2023]
Abstract
Three ecotypes of Arabidopsis thaliana, ecotype Columbia (Wild type, Wt) and two mutants (pgr5 and ndf4), were used to evaluate the effects of diuron on photosynthetic activity of A. thaliana. It was found that diuron adversely affected the fresh weight and chlorophyll content of the plants. Chlorophyll fluorescence studies determined that the pgr5 mutant was more sensitive to diuron than Wt and the ndf4 mutant. Gene expression analysis revealed different roles for the two cyclic electron transfer (CET) pathways, NAD(P)H dehydrogenase (NDH) and proton gradient regulation (PGR5) pathways, in the plant after diuron treatment. For example, a gene in the NDH pathway, lhca5, was activated in the low dose (LD) group in the pgr5 mutant, but was down-regulated in the moderate dose (MD) group, along with two other NDH-related genes (ppl2 and ndhH). In the PGR5 pathway, the pgr5 gene was functional under conditions of increased stress (MD group), and was up-regulated to a greater extent in the ndf4 mutant than that in the Wt and pgr5 mutant. Our results suggest that the PGR5 pathway in plants is more important than the NDH pathway during resistance to environmental stress. Deficiencies in the PGR5 pathway could not be counteracted by the NDH pathway, but deficiencies in the NDH pathway could be overcome by stimulating PGR5.
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Qi X, Zhu L, Wang C, Zhang H, Wang L, Qian H. Development of standard fingerprints of naked oats using chromatography combined with principal component analysis and cluster analysis. J Cereal Sci 2017. [DOI: 10.1016/j.jcs.2017.02.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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260
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Asad MAU, Lavoie M, Song H, Jin Y, Fu Z, Qian H. Interaction of chiral herbicides with soil microorganisms, algae and vascular plants. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 580:1287-1299. [PMID: 28003051 DOI: 10.1016/j.scitotenv.2016.12.092] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Revised: 12/13/2016] [Accepted: 12/13/2016] [Indexed: 06/06/2023]
Abstract
Chiral herbicides are often used in agriculture as racemic mixtures, although studies have shown that the fate and toxicity of herbicide enantiomers to target and non-target plants can be enantioselective and that herbicide toxicity can be mediated by only one enantiomer. If one enantiomer is active against the target plant, the use of enantiomer-rich herbicide mixtures instead of racemic herbicides could decrease the amount of herbicide applied to a crop and the cost of herbicide application, as well as unintended toxic herbicide effects in the environment. Such a change in the management of herbicide applications requires in-depth knowledge and a critical analysis of the fate and effects of herbicide enantiomers in the environment. This review article first synthesizes the current state of knowledge on soil and plant biodegradation of herbicide enantiomers. Second, we discuss our understanding of the biochemical toxicity mechanisms associated with both enantiomers in target and non-target plants gained from state-of-the-art genomic, proteomic and metabolomic tools. Third, we present the emerging view on the "side effects" of herbicides in the root microbiome and their repercussions on target or non-target plant metabolism. Although our review of the literature indicates that the toxicity of herbicide enantiomers is highly variable depending on plant species and herbicides, we found general trends in the enantioselective toxic effects of different herbicides in vascular plants and algae. The present study will be helpful for pesticide risk assessments as well as for the management of applying enriched-enantiomer herbicides.
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Dellarco M, Zaleski R, Gaborek BJ, Qian H, Bellin CA, Egeghy P, Heard N, Jolliet O, Lander DR, Sunger N, Stylianou KS, Tanir JY. Using exposure bands for rapid decision making in the RISK21 tiered exposure assessment. Crit Rev Toxicol 2017; 47:317-341. [PMID: 28266262 PMCID: PMC6091571 DOI: 10.1080/10408444.2016.1270255] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The ILSI Health and Environmental Sciences Institute (HESI) Risk Assessment in the Twenty-first Century (RISK21) project was initiated to address and catalyze improvements in human health risk assessment. RISK21 is a problem formulation-based conceptual roadmap and risk matrix visualization tool, facilitating transparent evaluation of both hazard and exposure components. The RISK21 roadmap is exposure-driven, that is, exposure is used as the second step (after problem formulation) to define and focus the assessment. This paper describes the exposure tiers of the RISK21 matrix and the approaches to adapt readily available information to more quickly inform exposure at a screening level. In particular, exposure look-up tables were developed from available exposure tools (European Centre for Ecotoxicology and Toxicology of Chemicals (ECETOC) Targeted Risk Assessment (TRA) for worker exposure, ECETOC TRA, European Solvents Industry Group (ESIG) Generic Exposure Scenario (GES) Risk and Exposure Tool (EGRET) for consumer exposure, and USEtox® for indirect exposure to humans via the environment) and were tested in a hypothetical mosquito bed netting case study. A detailed WHO risk assessment for a similar mosquito net use served as a benchmark for the performance of the RISK21 approach. The case study demonstrated that the screening methodologies provided suitable conservative exposure estimates for risk assessment. The results of this effort showed that the RISK21 approach is useful for defining future assessment efforts, focusing assessment activities and visualizing results.
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Chen S, Li X, Lavoie M, Jin Y, Xu J, Fu Z, Qian H. Diclofop-methyl affects microbial rhizosphere community and induces systemic acquired resistance in rice. J Environ Sci (China) 2017; 51:352-360. [PMID: 28115148 DOI: 10.1016/j.jes.2016.06.027] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Revised: 05/30/2016] [Accepted: 06/01/2016] [Indexed: 05/27/2023]
Abstract
Diclofop-methyl (DM), a widely used herbicide in food crops, may partly contaminate the soil surface of natural ecosystems in agricultural area and exert toxic effects at low dose to nontarget plants. Even though rhizosphere microorganisms strongly interact with root cells, little is known regarding their potential modulating effect on herbicide toxicity in plants. Here we exposed rice seedlings (Xiushui 63) to 100μg/L DM for 2 to 8days and studied the effects of DM on rice rhizosphere microorganisms, rice systemic acquired resistance (SAR) and rice-microorganisms interactions. The results of metagenomic 16S rDNA Illumina tags show that DM increases bacterial biomass and affects their community structure in the rice rhizosphere. After DM treatment, the relative abundance of the bacterium genera Massilia and Anderseniella increased the most relative to the control. In parallel, malate and oxalate exudation by rice roots increased, potentially acting as a carbon source for several rhizosphere bacteria. Transcriptomic analyses suggest that DM induced SAR in rice seedlings through the salicylic acid (but not the jasmonic acid) signal pathway. This response to DM stress conferred resistance to infection by a pathogenic bacterium, but was not influenced by the presence of bacteria in the rhizosphere since SAR transcripts did not change significantly in xenic and axenic plant roots exposed to DM. The present study provides new insights on the response of rice and its associated microorganisms to DM stress.
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Prakoso D, De Blasio M, Kiriazis H, Qian H, Deo M, Jap E, Weeks K, Parry L, Du X, Gregorevic P, McMullen J, Ritchie R. Cardiac Remodelling and Inflammation Associated with Diabetic Cardiomyopathy is Mitigated by Phosphoinositide 3-Kinase P110α Gene Delivery. Heart Lung Circ 2017. [DOI: 10.1016/j.hlc.2017.06.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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264
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Prakoso D, Kiriazis H, Tate M, Qian H, Deo M, Parry L, Gregorevic P, Du X, Chatham J, De Blasio M, Ritchie R. Using Gene Delivery to Target Cardiac O-GlcNAc Protein Modifications in the Diabetic Heart: Impact on Left Ventricular (LV) Function. Heart Lung Circ 2017. [DOI: 10.1016/j.hlc.2017.06.157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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265
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Song H, Fan X, Liu G, Xu J, Li X, Tan Y, Qian H. Inhibitory effects of tributyl phosphate on algal growth, photosynthesis, and fatty acid synthesis in the marine diatom Phaeodactylum tricornutum. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:24009-24018. [PMID: 27638802 DOI: 10.1007/s11356-016-7531-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2016] [Accepted: 08/26/2016] [Indexed: 06/06/2023]
Abstract
The widely used solvent extractant, tributyl phosphate (TBP), primarily used as a solvent for the conventional processing of nuclear fuel, has come under scrutiny recently due to concerns surrounding potential environmental contamination and toxicity. In this study, we found that, in Phaeodactylum tricornutum, administration of TBP severely inhibited algal cell growth by reducing photosynthetic efficiency and inducing oxidative stress. We further explored the effect of TBP by examining the gene expression of the photosynthetic electron transport chain and its contribution to reactive oxygen species (ROS) burst. Our data revealed that TBP affected both fatty acid content and profile by regulating the transcription of genes related to glycolysis, fatty acid biosynthesis, and β-oxidation. These results demonstrated that TBP did in fact trigger the synthesis of ROS, disrupting the subcellular membrane structure of this aquatic organism. Our study brings new insight into the fundamental mechanism of toxicity exerted by TBP on the marine alga P. tricornutum.
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266
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Qian H, Zhu K, Lu H, Lavoie M, Chen S, Zhou Z, Deng Z, Chen J, Fu Z. Contrasting silver nanoparticle toxicity and detoxification strategies in Microcystis aeruginosa and Chlorella vulgaris: New insights from proteomic and physiological analyses. THE SCIENCE OF THE TOTAL ENVIRONMENT 2016; 572:1213-1221. [PMID: 27522289 DOI: 10.1016/j.scitotenv.2016.08.039] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Revised: 08/03/2016] [Accepted: 08/05/2016] [Indexed: 06/06/2023]
Abstract
Several studies have shown that AgNPs can be toxic to phytoplankton, but the underlying cellular mechanisms still remain largely unknown. Here we studied the toxicity and detoxification of AgNPs (and ionic silver released by the AgNPs) in a prokaryotic (Microcystis aeruginosa) and a eukaryotic (Chlorella vulgaris) freshwater phytoplankton species using a combination of proteomic, gene transcription, and physiological analyses. We show that AgNPs were more toxic to the growth, photosynthesis, antioxidant systems, and carbohydrate metabolism of M. aeruginosa than of C. vulgaris. C. vulgaris could detoxify efficiently AgNPs-induced ROS species via induction of antioxidant enzymes (superoxide dismutase or SOD, peroxidase or POD, catalase or CAT, and glutamine synthetase), allowing photosynthesis to continue unabated at growth-inhibitory AgNPs concentration. By contrast, the transcription and expression of SOD and POD in M. aeruginosa was inhibited by the same AgNPs exposure. The present study shed new lights on the AgNPs toxicity mechanisms and detoxification strategies in two freshwater algae of contrasting AgNPs sensitivity.
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Sun L, Tan H, Peng T, Wang S, Xu W, Qian H, Jin Y, Fu Z. Developmental neurotoxicity of organophosphate flame retardants in early life stages of Japanese medaka (Oryzias latipes). ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2016; 35:2931-2940. [PMID: 27146889 DOI: 10.1002/etc.3477] [Citation(s) in RCA: 85] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Revised: 03/27/2016] [Accepted: 05/02/2016] [Indexed: 05/21/2023]
Abstract
Because brominated flame retardants are being banned or phased out worldwide, organophosphate flame retardants have been used as alternatives on a large scale and have thus become ubiquitous environmental contaminants; this raises great concerns about their environmental health risk and toxicity. Considering that previous research has identified the nervous system as a sensitive target, Japanese medaka were used as an aquatic organism model to evaluate the developmental neurotoxicity of 4 organophosphate flame retardants: triphenyl phosphate, tri-n-butyl phosphate, tris(2-butoxyethyl) phosphate, and tris(2-chloroethyl) phosphate (TCEP). The embryo toxicity test showed that organophosphate flame retardant exposure could decrease hatchability, delay time to hatching, increase the occurrence of malformations, reduce body length, and slow heart rate. Regarding locomotor behavior, exposure to the tested organophosphate flame retardants (except TCEP) for 96 h resulted in hypoactivity for medaka larvae in both the free-swimming and the dark-to-light photoperiod stimulation test. Changes of acetylcholinesterase activity and transcriptional responses of genes related to the nervous system likely provide a reasonable explanation for the neurobehavioral disruption. Overall, the present study clearly demonstrates the developmental neurotoxicity of various organophosphate flame retardants with very different potency and contribute to the determination of which organophosphate flame retardants are appropriate substitutes, as well as the consideration of whether regulations are reasonable and required. Environ Toxicol Chem 2016;35:2931-2940. © 2016 SETAC.
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Liu Q, Li R, Qian H, Liu B. The gelatinases-stimuli nanoparticles reverse docetaxel resistance and epithelial to mesenchymal transition in lung cancer cell line. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw362.41] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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269
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Qian H, Tay CY, Setyawati MI, Chia SL, Lee DS, Leong DT. Protecting microRNAs from RNase degradation with steric DNA nanostructures. Chem Sci 2016; 8:1062-1067. [PMID: 28451245 PMCID: PMC5356501 DOI: 10.1039/c6sc01829g] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Accepted: 09/10/2016] [Indexed: 12/11/2022] Open
Abstract
A DNA nanostructure bearing a “Shuriken” shape is designed to deliver, protect and activate microRNA-145 functionality in human colorectal cancer cells. This novel DNA nanostructure enabled therapeutic platform greatly suppresses cancer cell proliferation and tumor growth.
Tumor suppressive microRNAs are potent molecules that might cure cancer, one day. Despite the many advanced strategies for delivery of these microRNAs to the cell, there are few therapeutic microRNAs in clinical use. Progress in microRNA bioapplications is hindered by a high vulnerability of exogeneous microRNA molecules to RNase degradation that occurs in extra- and intracellular physiological conditions. In this proof-of-concept study, we use a programmable self-assembled DNA nanostructure bearing a “shuriken” shape to not only deliver but more importantly protect a tumor suppressive microRNA-145 for a sufficiently long time to exert its therapeutic effect in human colorectal cancer cells. Our DNA nanostructure harbored complementary sequences that can hybridize with the microRNA cargo. This brings the microRNA–DNA duplex very close to the core structure such that the microRNA cargo becomes sterically shielded from RNase's degradative activity. Our novel DNA nanostructure based protector concept removes the degradative bottleneck that may plague other nucleic acid delivery strategies and presents a new paradigm towards exploiting these microRNAs for anti-cancer therapy.
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Dong D, Peng X, Liu J, Qian H, Li J, Wu B. Morbid Obesity Alters Both Pharmacokinetics and Pharmacodynamics of Propofol: Dosing Recommendation for Anesthesia Induction. Drug Metab Dispos 2016; 44:1579-83. [DOI: 10.1124/dmd.116.071605] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Accepted: 07/29/2016] [Indexed: 11/22/2022] Open
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Prakoso D, De Blasio M, Kiriazis H, Qian H, Deo M, Jap E, Weeks K, Parry L, Du X, Gregorevic P, McMullen J, Ritchie R. Phosphoinositide 3-Kinase p110alpha Gene Therapy Rescues Diabetic Cardiomyopathy in a Type 2 Diabetic Model. Heart Lung Circ 2016. [DOI: 10.1016/j.hlc.2016.06.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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272
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Sun C, Chen S, Jin Y, Song H, Ruan S, Fu Z, Asad MAU, Qian H. Effects of the Herbicide Imazethapyr on Photosynthesis in PGR5- and NDH-Deficient Arabidopsis thaliana at the Biochemical, Transcriptomic, and Proteomic Levels. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:4497-504. [PMID: 27215288 DOI: 10.1021/acs.jafc.6b01699] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Photosynthesis is a very important metabolic pathway for plant growth and crop yield. This report investigated the effect of the herbicide imazethapyr on photosynthesis in the Arabidopsis thaliana pnsB3 mutant (a defect in the NDH pathway) and pgr5 mutant (a defect in the PGR5 pathway) to determine which cyclic electron transport chain (CET) of the NDH and PGR5 pathways is more important for protecting the photosynthetic system under herbicide stress. The results showed that 20 μg/L imazethapyr markedly inhibited the growth of the three ecotypes of A. thaliana and produced more anthocyanins and reactive oxygen species (ROS), particularly in the pgr5 mutant. The chlorophyll fluorescence results showed that PSII was severely damaged in the pgr5 mutant. Additionally, the CET was significantly stimulated to protect the photosynthetic system from light damage in Wt and the pnsB3 mutant but not the pgr5 mutant. The real-time PCR analysis indicated that imazethapyr treatment considerably decreased the transcript levels of most photosynthesis-related genes in the three treated groups. Several genes in the PGR5 pathway were significantly induced in the pnsB3 mutant, but no genes in the NDH pathway were induced in the pgr5 mutant. The gene transcription analysis showed that the pgr5 mutant cannot compensate for the deficit in the PGR5 pathway by stimulating the NDH pathway, whereas the pnsB3 mutant can compensate for the deficit in the CET cycle by regulating the PGR5 pathway. The iTRAQ analyses also showed that the photosynthesis system, glycolysis, and TCA cycle suffered the most severe damage in the pgr5 mutant. All of these results showed that the PGR5 pathway is more critical for electron transfer around PSI than the NDH pathway to resist herbicide stress.
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Sun L, Xu W, Peng T, Chen H, Ren L, Tan H, Xiao D, Qian H, Fu Z. Developmental exposure of zebrafish larvae to organophosphate flame retardants causes neurotoxicity. Neurotoxicol Teratol 2016; 55:16-22. [DOI: 10.1016/j.ntt.2016.03.003] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2015] [Revised: 03/14/2016] [Accepted: 03/20/2016] [Indexed: 10/22/2022]
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Shen Y, Chen L, Zhang H, Zhang Y, Zhang H, Wang L, Qian H, Qi X, Zhang H. In Vitro and in Vivo antioxidant activity of ethyl acetate extraction of purple rice. Cell Mol Biol (Noisy-le-grand) 2016; 62:96-103. [PMID: 27188742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Accepted: 04/19/2016] [Indexed: 06/05/2023]
Abstract
The antioxidant activities of ethyl acetate extraction of purple rice (EAEPR) were evaluated by various methods in vitro and in vivo. In in vitro antioxidant assays, EAEPR was found to have strong 2, 2-diphenyl-1-picrylhydrazyl radical scavenging activity hydroxyl radical, reducing power and metal-ion chelating activity. In in vivo antioxidant assays, mice were administered with EAEPR via gavage for 42 consecutive days. As a result, administration of EAEPR significantly enhanced the activities of glutathione peroxidase in serums and livers of mice. EAEPR could improve the lipid status, especially total cholesterol and low-density lipoprotein cholesterol levels. In addition, total phenolic content of EAEPR was 188.21mg/g. The main phenolic compounds in EAEPR analyzed by ultra-high performance liquid chromatography tandem mass spectrometry were determined as ferulic acid and quercetin. The contents of ferulic acid and quercetin in EAEPR were 14.21mg/g and 35.28mg/g, respectively. The Nrf2 expression was significantly elevated after administration of EAEPR.These results suggested that EAEPR had potent antioxidant activity and could be explored as a novel natural antioxidant.
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Shen Y, Zhang H, Cheng L, Wang L, Qian H, Qi X. In vitro and in vivo antioxidant activity of polyphenols extracted from black highland barley. Food Chem 2016; 194:1003-12. [DOI: 10.1016/j.foodchem.2015.08.083] [Citation(s) in RCA: 117] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2015] [Revised: 08/18/2015] [Accepted: 08/20/2015] [Indexed: 12/17/2022]
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