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Xiong Q, Zhang L, Zhu Z, Xu G, Jing J, Zhang W, Zhang C, Ye X. Polypyrrole-Modified Nanocellulose Exhibits Superior Performance for Hg(II) Adsorption. Polymers (Basel) 2023; 15:2735. [PMID: 37376382 DOI: 10.3390/polym15122735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 06/13/2023] [Accepted: 06/16/2023] [Indexed: 06/29/2023] Open
Abstract
Cellulose, a kind of polymer containing abundant functional groups, has widespread use in the adsorptive removal of environmental pollutants. An efficient and environmental friendly polypyrrole (PPy) coating approach is employed to modify the agricultural by-product straw derived cellulose nanocrystal (CNC) into excellent property adsorbents for removing the heavy metal ion of Hg(II). The FT-IR and SEM-EDS results demonstrated that PPy is formed on the surface of CNC. Consequently, the adsorption measurements proved that the obtained PPy-modified CNC (CNC@PPy) possesses a remarkably enhanced Hg(II) adsorption capacity of 1095 mg g-1, owing to a plentiful functional group of doped Cl element on the surface of CNC@PPy by forming Hg2Cl2 precipitate. The results of the study suggest that the Freundlich model is more effective than the Langmuir model at describing the isotherms, while the pseudo-second order kinetic model is better suited to correlating with the experimental data compared to the pseudo-first order model. Further, the CNC@PPy exhibits an outstanding reusability, capable of maintaining 82.3% of its original Hg(II) adsorption capacity after five successive adsorption cycles. The findings of this work reveal a method to convert the agricultural by-product into high performance environmental remediation materials.
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Affiliation(s)
- Qizhong Xiong
- Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, Anhui Province Engineering and Technology Research Center of Intelligent Manufacture and Efficient Utilization of Green Phosphorus Fertilizer, College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
- Key Laboratory of JiangHuai Arable Land Resources Protection and Eco-Restoration, Ministry of Natural Resources, College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
| | - Lei Zhang
- Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, Anhui Province Engineering and Technology Research Center of Intelligent Manufacture and Efficient Utilization of Green Phosphorus Fertilizer, College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
- Key Laboratory of JiangHuai Arable Land Resources Protection and Eco-Restoration, Ministry of Natural Resources, College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
| | - Zijun Zhu
- Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, Anhui Province Engineering and Technology Research Center of Intelligent Manufacture and Efficient Utilization of Green Phosphorus Fertilizer, College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
- Key Laboratory of JiangHuai Arable Land Resources Protection and Eco-Restoration, Ministry of Natural Resources, College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
| | - Gang Xu
- Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, Anhui Province Engineering and Technology Research Center of Intelligent Manufacture and Efficient Utilization of Green Phosphorus Fertilizer, College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
- Key Laboratory of JiangHuai Arable Land Resources Protection and Eco-Restoration, Ministry of Natural Resources, College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
| | - Jianyuan Jing
- Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, Anhui Province Engineering and Technology Research Center of Intelligent Manufacture and Efficient Utilization of Green Phosphorus Fertilizer, College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
- Key Laboratory of JiangHuai Arable Land Resources Protection and Eco-Restoration, Ministry of Natural Resources, College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
| | - Weifeng Zhang
- Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, Anhui Province Engineering and Technology Research Center of Intelligent Manufacture and Efficient Utilization of Green Phosphorus Fertilizer, College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
| | - Chaochun Zhang
- Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, Anhui Province Engineering and Technology Research Center of Intelligent Manufacture and Efficient Utilization of Green Phosphorus Fertilizer, College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
| | - Xinxin Ye
- Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, Anhui Province Engineering and Technology Research Center of Intelligent Manufacture and Efficient Utilization of Green Phosphorus Fertilizer, College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
- Key Laboratory of JiangHuai Arable Land Resources Protection and Eco-Restoration, Ministry of Natural Resources, College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
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Zhou R, Xu W, Liu P, Zhao S, Xu G, Xiong Q, Zhang W, Zhang C, Ye X. Synthesis of FeOOH-Loaded Aminated Polyacrylonitrile Fiber for Simultaneous Removal of Phenylphosphonic Acid and Phosphate from Aqueous Solution. Polymers (Basel) 2023; 15:polym15081918. [PMID: 37112065 PMCID: PMC10146033 DOI: 10.3390/polym15081918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Revised: 04/12/2023] [Accepted: 04/13/2023] [Indexed: 04/29/2023] Open
Abstract
Phosphorus is one of the important metabolic elements for living organisms, but excess phosphorus in water can lead to eutrophication. At present, the removal of phosphorus in water bodies mainly focuses on inorganic phosphorus, while there is still a lack of research on the removal of organic phosphorus (OP). Therefore, the degradation of OP and synchronous recovery of the produced inorganic phosphorus has important significance for the reuse of OP resources and the prevention of water eutrophication. Herein, a novel FeOOH-loaded aminated polyacrylonitrile fiber (PANAF-FeOOH) was constructed to enhance the removal of OP and phosphate. Taking phenylphosphonic acid (PPOA) as an example, the results indicated that modification of the aminated fiber was beneficial to FeOOH fixation, and the PANAF-FeOOH prepared with 0.3 mol L-1 Fe(OH)3 colloid had the best performance for OP degradation. The PANAF-FeOOH efficiently activated peroxydisulfate (PDS) for the degradation of PPOA with a removal efficiency of 99%. Moreover, the PANAF-FeOOH maintained high removal capacity for OP over five cycles as well as strong anti-interference in a coexisting ion system. In addition, the removal mechanism of PPOA by the PANAF-FeOOH was mainly attributed to the enrichment effect of PPOA adsorption on the fiber surface's special microenvironment, which was more conducive to contact with SO4•- and •OH generated by PDS activation. Furthermore, the PANAF-FeOOH prepared with 0.2 mol L-1 Fe(OH)3 colloid possessed excellent phosphate removal capacity with a maximal adsorption quantity of 9.92 mg P g-1. The adsorption kinetics and isotherms of the PANAF-FeOOH for phosphate were best depicted by pseudo-quadratic kinetics and a Langmuir isotherm model, showing a monolayer chemisorption procedure. Additionally, the phosphate removal mechanism was mainly due to the strong binding force of iron and the electrostatic force of protonated amine on the PANAF-FeOOH. In conclusion, this study provides evidence for PANAF-FeOOH as a potential material for the degradation of OP and simultaneous recovery of phosphate.
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Affiliation(s)
- Rui Zhou
- Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, Engineering and Technology Research Center of Intelligent Manufacture and Efficient Utilization of Green Phosphorus Fertilizer of Anhui Province, College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
- Key Laboratory of JiangHuai Arable Land Resources Protection and Eco-Restoration, Ministry of Natural Resources, College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
| | - Wusong Xu
- Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, Engineering and Technology Research Center of Intelligent Manufacture and Efficient Utilization of Green Phosphorus Fertilizer of Anhui Province, College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
- Key Laboratory of JiangHuai Arable Land Resources Protection and Eco-Restoration, Ministry of Natural Resources, College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
| | - Peisen Liu
- Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, Engineering and Technology Research Center of Intelligent Manufacture and Efficient Utilization of Green Phosphorus Fertilizer of Anhui Province, College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
- Key Laboratory of JiangHuai Arable Land Resources Protection and Eco-Restoration, Ministry of Natural Resources, College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
| | - Shangyuan Zhao
- Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, Engineering and Technology Research Center of Intelligent Manufacture and Efficient Utilization of Green Phosphorus Fertilizer of Anhui Province, College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
- Key Laboratory of JiangHuai Arable Land Resources Protection and Eco-Restoration, Ministry of Natural Resources, College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
| | - Gang Xu
- Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, Engineering and Technology Research Center of Intelligent Manufacture and Efficient Utilization of Green Phosphorus Fertilizer of Anhui Province, College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
- Key Laboratory of JiangHuai Arable Land Resources Protection and Eco-Restoration, Ministry of Natural Resources, College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
| | - Qizhong Xiong
- Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, Engineering and Technology Research Center of Intelligent Manufacture and Efficient Utilization of Green Phosphorus Fertilizer of Anhui Province, College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
- Key Laboratory of JiangHuai Arable Land Resources Protection and Eco-Restoration, Ministry of Natural Resources, College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
| | - Weifeng Zhang
- Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, Engineering and Technology Research Center of Intelligent Manufacture and Efficient Utilization of Green Phosphorus Fertilizer of Anhui Province, College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
- Key Laboratory of JiangHuai Arable Land Resources Protection and Eco-Restoration, Ministry of Natural Resources, College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
| | - Chaochun Zhang
- Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, Engineering and Technology Research Center of Intelligent Manufacture and Efficient Utilization of Green Phosphorus Fertilizer of Anhui Province, College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
- Key Laboratory of JiangHuai Arable Land Resources Protection and Eco-Restoration, Ministry of Natural Resources, College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
| | - Xinxin Ye
- Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, Engineering and Technology Research Center of Intelligent Manufacture and Efficient Utilization of Green Phosphorus Fertilizer of Anhui Province, College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
- Key Laboratory of JiangHuai Arable Land Resources Protection and Eco-Restoration, Ministry of Natural Resources, College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
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Xiong Q, Brudzinski MR, Gossett D, Lin Q, Hampton JC. Seismic magnitude clustering is prevalent in field and laboratory catalogs. Nat Commun 2023; 14:2056. [PMID: 37045820 PMCID: PMC10097663 DOI: 10.1038/s41467-023-37782-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Accepted: 03/24/2023] [Indexed: 04/14/2023] Open
Abstract
Clustering of earthquake magnitudes is still actively debated, compared to well-established spatial and temporal clustering. Magnitude clustering is not currently implemented in earthquake forecasting but would be important if larger magnitude events are more likely to be followed by similar sized events. Here we show statistically significant magnitude clustering present in many different field and laboratory catalogs at a wide range of spatial scales (mm to 1000 km). It is universal in field catalogs across fault types and tectonic/induced settings, while laboratory results are unaffected by loading protocol or rock types and show temporal stability. The absence of clustering can be imposed by a global tensile stress, although clustering still occurs when isolating to triggered event pairs or spatial patches where shear stress dominates. Magnitude clustering is most prominent at short time and distance scales and modeling indicates >20% repeating magnitudes in some cases, implying it can help to narrow physical mechanisms for seismogenesis.
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Affiliation(s)
- Q Xiong
- Geomechanics and Damage Group (GeoD), Department of Civil and Environmental Engineering, University of Wisconsin-Madison, Madison, WI, USA
| | - M R Brudzinski
- Department of Geology and Environmental Earth Science, Miami University, Oxford, OH, USA
| | - D Gossett
- Department of Geology and Environmental Earth Science, Miami University, Oxford, OH, USA
| | - Q Lin
- State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, 102249, Beijing, China
- College of Petroleum Engineering, China University of Petroleum, Beijing, China
| | - J C Hampton
- Geomechanics and Damage Group (GeoD), Department of Civil and Environmental Engineering, University of Wisconsin-Madison, Madison, WI, USA.
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4
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Zhao S, Wang F, Zhou R, Liu P, Xiong Q, Zhang W, Zhang C, Xu G, Ye X, Gao H. Fabrication of recyclable Fe3+ chelated aminated polypropylene fiber for efficient clean-up of phosphate wastewater. Front Chem Sci Eng 2023. [DOI: 10.1007/s11705-022-2253-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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5
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Wang Q, Lin W, Zhou X, Lei K, Xu R, Zhang X, Xiong Q, Sheng R, Song W, Liu W, Wang Q, Yuan Q. Single-Cell Transcriptomic Atlas of Gingival Mucosa in Type 2 Diabetes. J Dent Res 2022; 101:1654-1664. [PMID: 35656582 DOI: 10.1177/00220345221092752] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
The oral gingival barrier is a constantly stimulated and dynamic environment where homeostasis is often disrupted, resulting in inflammatory periodontal diseases. Type 2 diabetes (T2D) has been reported to be associated with gingival barrier dysfunction, but the effect and underlying mechanism are inconclusive. Herein, we performed single-cell RNA sequencing (scRNA-seq) of gingiva from leptin receptor-deficient mice (db/db) to examine the gingival heterogeneity in the context of T2D. Periodontal health of control mice is characterized by populations of Krt14+-expressing epithelial cells and Col1a1+-fibroblasts mediating immune homeostasis primarily through the enrichment of innate lymphoid cells. The db/db gingiva exhibited decreased epithelial/stromal ratio and dysfunctional barrier. We further observed stromal, particularly fibroblast immune hyperresponsiveness, linked to the recruitment of myeloid-derived cells at the db/db gingiva. Both scRNA-seq and histological analysis suggested the inflammatory signaling between fibroblasts and neutrophils as a potential driver of diabetes-induced periodontal damage. Notably, the "immune-like" stromal cells were wired toward the induction of gingival γδ T hyperresponsiveness in db/db mice. Our work reveals that the "immune-like" fibroblasts with transcriptional diversity are involved in the innate immune homeostasis at the diabetic gingiva. It highlights a potentially significant role of these cell types in its pathogenesis.
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Affiliation(s)
- Q Wang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - W Lin
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - X Zhou
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - K Lei
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - R Xu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - X Zhang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Q Xiong
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - R Sheng
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - W Song
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - W Liu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Q Wang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Q Yuan
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
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Chen K, Yang Y, Yang F, Xiao X, Wu H, Huang XY, Xiong Q, Shi X, Shuai L, Zhou L. [Analysis of gene variation and clinical characteristics of Wiedemann-Steiner syndrome]. Zhonghua Er Ke Za Zhi 2022; 60:119-123. [PMID: 35090228 DOI: 10.3760/cma.j.cn112140-20210720-00608] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Objective: To summarize and analyze the clinical characteristics and gene mutations of 6 patients with Wiedemann-Steiner syndrome (WDSTS). Methods: To review and analyze the clinical data, including general conditions, clinical manifestations, growth hormone, cranial or pituitary gland magnetic resonance imaging (MRI),gene results and other data, 6 cases with WDSTS admitted to the Department of Endocrinology, Genetics and Metabolism of Jiangxi Provincial Children's Hospital and the Department of Child Care of Pingxiang Maternity and Child Care from April 2017 to February 2021 were recruited. Results: Of the 6 patients, 2 were male and 4 were female. The age of the first visit ranged from 1.0 to 11.2 years. All the 6 children presented with growth retardation and mental retardation and they all had typical facial dysmorphism and hypertrichosis (mainly on the back and limbs). Among them, case 5 had a growth hormone deficiency, and case 2 and 4 had abnormalities revealed by cranial MRI. Variations in KMT2A gene were identified in these 6 patients: c.10900+2T>C,c.10837C>T(p.Gln3613*), c.4332G>A(p.E1444E), c.2508dupC(p.W838Lfs*9), c.11695_11696delinsT(p.T3899Sfs*73), c.9915dupA (p.P3306Tfs*22).Among these variations, c.4332G>A, c.11695_11696delinsT and c.9915dupA were novel mutations. Therefore, the final diagnosis of these patients was WDSTS. Conclusions: Patients presented with short stature and mental retardation, typical facial dysmorphism and hypertrichosis should be considered WDSTS. Whole-exome sequencing plays an important role in disease diagnosis and genetic counseling.
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Affiliation(s)
- K Chen
- Department of Central Laboratory,Jiangxi Provincial Children's Hospital,the Affiliated Children's Hospital of Nanchang University, Nanchang 330006, China
| | - Y Yang
- Department of Endocrinology and Genetics and Metabolism, Jiangxi Provincial Children's Hospital,the Affiliated Children's Hospital of Nanchang University,Nanchang 330006,China
| | - F Yang
- Department of Endocrinology and Genetics and Metabolism, Jiangxi Provincial Children's Hospital,the Affiliated Children's Hospital of Nanchang University,Nanchang 330006,China
| | - X Xiao
- Department of Child Care,Pingxiang Maternity and Child Care, Pingxiang 337055, China
| | - H Wu
- Department of Endocrinology and Genetics and Metabolism, Jiangxi Provincial Children's Hospital,the Affiliated Children's Hospital of Nanchang University,Nanchang 330006,China
| | - X Y Huang
- Department of Central Laboratory,Jiangxi Provincial Children's Hospital,the Affiliated Children's Hospital of Nanchang University, Nanchang 330006, China
| | - Q Xiong
- Department of Endocrinology and Genetics and Metabolism, Jiangxi Provincial Children's Hospital,the Affiliated Children's Hospital of Nanchang University,Nanchang 330006,China
| | - X Shi
- Department of Endocrinology and Genetics and Metabolism, Jiangxi Provincial Children's Hospital,the Affiliated Children's Hospital of Nanchang University,Nanchang 330006,China
| | - L Shuai
- Department of Central Laboratory,Jiangxi Provincial Children's Hospital,the Affiliated Children's Hospital of Nanchang University, Nanchang 330006, China
| | - Li Zhou
- Department of Child Care,Pingxiang Maternity and Child Care, Pingxiang 337055, China
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Jin M, Chen X, Gao M, Sun R, Tian D, Xiong Q, Wei J, Kalkhajeh YK, Gao H. Manganese promoted wheat straw decomposition by regulating microbial communities and enzyme activities. J Appl Microbiol 2021; 132:1079-1090. [PMID: 34424586 DOI: 10.1111/jam.15266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 08/19/2021] [Accepted: 08/20/2021] [Indexed: 12/01/2022]
Abstract
AIMS This study investigated the dose-effect of manganese (Mn) addition on wheat straw (WS) decomposition, and explored the potential mechanisms of Mn involved in the acceleration of WS decomposition in regards to the soil microbial communities and enzyme activities. METHODS AND RESULTS A 180-day incubation experiment was performed to examine the decomposition of WS under four Mn levels, that is, 0, 0.25, 1 and 2 mg g-1 . The effects of microbial communities and enzyme activities were evaluated using control (0 mg g-1 ) and Mn (0.25 mg g-1 ) treatments. Our results revealed that Mn (0.25 mg g-1 ) addition significantly increased WS decomposition, and enhanced the release of carbon and nitrogen. Optimal Mn addition (0.25 mg g-1 ) also caused significant increases in the activity of neutral xylanase (NEX), laccase (Lac), manganese peroxidase (MnP) and lignin peroxidase (LiP) within the incubation period. Mn (0.25 mg g-1 ) addition also enriched some operational taxonomic units (OTUs) that, in turn, had the potential ability to decompose crop straw, such as secreting lignocellulolytic enzymes. CONCLUSIONS Mn (0.25 mg g-1 ) could promote WS decomposition through enrichment of the microbial species involved in biomass decomposition, which enhanced the lignocellulose-degrading enzyme activity. SIGNIFICANCE AND IMPACT OF THE STUDY This study provides evidence for Mn to promote WS biodegradation after Mn application, opening new windows to improve the utilization efficiency of crop residues.
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Affiliation(s)
- M Jin
- Anhui Province Key Laboratory of Farmland Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei, China.,Research Centre of Phosphorous Highly Efficient Utilization and Water Environment Protection, Yangtze River Economic Zone, P.R. China
| | - X Chen
- Anhui Province Key Laboratory of Farmland Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei, China.,Research Centre of Phosphorous Highly Efficient Utilization and Water Environment Protection, Yangtze River Economic Zone, P.R. China
| | - M Gao
- Anhui Province Key Laboratory of Farmland Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei, China.,Research Centre of Phosphorous Highly Efficient Utilization and Water Environment Protection, Yangtze River Economic Zone, P.R. China
| | - R Sun
- Anhui Province Key Laboratory of Farmland Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei, China.,Research Centre of Phosphorous Highly Efficient Utilization and Water Environment Protection, Yangtze River Economic Zone, P.R. China
| | - D Tian
- Anhui Province Key Laboratory of Farmland Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei, China.,Research Centre of Phosphorous Highly Efficient Utilization and Water Environment Protection, Yangtze River Economic Zone, P.R. China
| | - Q Xiong
- Anhui Province Key Laboratory of Farmland Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei, China.,Research Centre of Phosphorous Highly Efficient Utilization and Water Environment Protection, Yangtze River Economic Zone, P.R. China
| | - J Wei
- Anhui Province Key Laboratory of Farmland Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei, China.,Research Centre of Phosphorous Highly Efficient Utilization and Water Environment Protection, Yangtze River Economic Zone, P.R. China
| | - Y K Kalkhajeh
- Anhui Province Key Laboratory of Farmland Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei, China.,Research Centre of Phosphorous Highly Efficient Utilization and Water Environment Protection, Yangtze River Economic Zone, P.R. China
| | - H Gao
- Anhui Province Key Laboratory of Farmland Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei, China.,Research Centre of Phosphorous Highly Efficient Utilization and Water Environment Protection, Yangtze River Economic Zone, P.R. China
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8
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Zhou SL, Li C, Huang JJ, Xiong Q, Li QZ, Peng BK, Tang Z. The relationship between endoplasmic reticulum stress and liver function, insulin resistance and vascular endothelial function in patients with non-alcoholic fatty liver disease. Eur Rev Med Pharmacol Sci 2021; 24:11707-11715. [PMID: 33275239 DOI: 10.26355/eurrev_202011_23816] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE The aim of the study was to investigate the relationship between ER stress and liver function, insulin resistance and vascular endothelial function in patients with non-alcoholic fatty liver disease. PATIENTS AND METHODS A total of 95 patients with non-alcoholic fatty liver disease were selected. They were admitted to our hospital from November 2016 to January 2019. A total of 90 cases of obese patients without fatty liver were selected as control group during the same period. The levels of ER stress marker protein were compared between the two groups, and the relationship between ER stress and liver function, insulin resistance, and vascular endothelial function was analyzed. RESULTS The protein level of ER stress markers in the test group was significantly higher than that in the control group (p<0.05). The liver function index and insulin resistance level were significantly higher than those in the control group (p<0.05). The level of vascular endothelial function was significantly lower than that of the control group (p<0.05). Pearson correlation analysis showed that ER stress marker protein was positively correlated with liver function and insulin resistance (p<0.05), while ER marker protein was negatively correlated with vascular endothelial function (p<0.05). CONCLUSIONS Liver function and insulin resistance are closely related to ER stress in patients with non-alcoholic fatty liver disease. Insulin resistance is one of the factors inducing and aggravating endothelial dysfunction.
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Affiliation(s)
- S-L Zhou
- Endocrine Department, Yan'an Hospital of Kunming City, Kunming, P.R. China.
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Huang YQ, Zhang QB, Zheng JX, Jian GL, Liu TH, He X, Xiao FN, Xiong Q, Qing YF. POS0136 ROLES OF AUTOPHAGY IN THE PATHOGENESIS OF PRIMARY GOUTY ARTHRITIS. Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.3592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Gout is a chronic autoinflammatory disease caused by monosodium urate (MSU) crystal deposition [1].Acute gout is characterized by an acute inflammatory reaction that resolves spontaneously within a few days[2], which is one of the distinguishing features of gout compared to other arthropathies or self-inflammatory diseases. Autophagy is a lysosomal degradation pathway that is essential for cellular growth, survival, differentiation, development and homeostasis [3]. Studies have demonstrated that autophagy might play a key role in the pathogenesis of primary gouty arthritis (GA) [4-7]. However, the roles of autophagy in the development of gout have not yet been elucidated.Objectives:The aim of our study was to investigate the changes in autophagy-related gene (ATG) mRNA and protein in patients and the clinical importance of these genes in primary gouty arthritis (GA) and to explore the roles of autophagy in the pathogenesis of GA.Methods:The mRNA and protein expression levels of ATGs (ATG3, ATG7, ATG10, ATG5, ATG12, ATG16L1, ATG4B and LC3-2) were measured in peripheral blood mononuclear cells (PBMCs) from 196 subjects, including 57 acute gout patients (AG group), 57 intercritical gout patients (IG group) and 82 healthy control subjects (HC group). The relationship between ATG expression levels and laboratory features was analyzed in GA patients.Results:The expression levels of ATG4B, ATG5, ATG12, ATG16L1, ATG10 and LC3-2 mRNA were much lower in the AG group than in the IG and HC groups (p<0.05), while the ATG7 mRNA level was much higher in the AG group than in the IG and HC groups (p<0.05). The protein expression levels of LC3-2, ATG3, ATG7 and ATG10 were much higher in the AG group than in the other groups, while those of ATG5, ATG12, ATG16L1 and ATG4B were far lower in the AG group than in the other groups (p<0.05). In GA patients, the levels of ATG mRNA and protein correlated with laboratory inflammatory and metabolic indexes.Conclusion:Altered ATG expression suggests that autophagy is involved in the pathogenesis of GA and participates in regulating inflammation and metabolism.References:[1]Dalbeth N, Choi HK, Joosten LAB, Khanna PP, Matsuo H, Perez-Ruiz F, et al. Gout. Nat Rev Dis Primers. 2019;5: 69.doi:10.1038/s41572-019-0115-y.[2]Schauer C, Janko C, Munoz LE, Zhao Y, Kienhöfer D, Frey B, et al. Aggregated neutrophil extracellular traps limit inflammation by degrading cytokines and chemokines. Nat Med. 2014;20: 511-517.doi:10.1038/nm.3547.[3]Han Y, Zhang L, Xing Y, Zhang L, Chen X, Tang P, et al. Autophagy relieves the function inhibition and apoptosis-promoting effects on osteoblast induced by glucocorticoid. Int J Mol Med. 2018;41: 800-808. doi:10.3892/ijmm.2017.3270.[4]Yang QB, He YL, Zhong XW, Xie WG, Zhou JG. Resveratrol ameliorates gouty inflammation via upregulation of sirtuin 1 to promote autophagy in gout patients. Inflammopharmacology. 2019;27: 47-56.doi:10.1007/s10787-018-00555-4.[5]Mitroulis I, Kambas K, Chrysanthopoulou A, Skendros P, Apostolidou E, Kourtzelis I, et al. Neutrophil extracellular trap formation is associated with IL-1β and autophagy-related signaling in gout. PLoS One. 2011;6: e29318.doi: 10.1371/journal.pone.0029318.[6]Crişan TO, Cleophas MCP, Novakovic B, Erler K, van de Veerdonk FL, Stunnenberg HG, et al. Uric acid priming in human monocytes is driven by the AKT-PRAS40 autophagy pathway. Proc Natl Acad Sci U S A. 2017;114: 5485-5490.doi:10.1073/pnas.1620910114.[7]Lee SS, Lee SW, Oh DH, Kim HS, Chae SC, Kim SK. Genetic analysis for rs2241880(T > C) in ATG16L1 polymorphism for the susceptibility of Gout. J Clin Rheumatol. 2019;25: e113-e115.doi:10.1097/rhu.0000000000000685.Disclosure of Interests:Yu-Qin Huang: None declared, Quan-Bo Zhang Grant/research support from: National Natural Science Foundation of China(General Program) (no.81974250) and Science and Technology Plan Project of Sichuan Province (no.2018JY0257), Jian-Xiong Zheng: None declared, gui-lin jian: None declared, tao-hong liu: None declared, Xin He: None declared, fan-ni xiao: None declared, qin xiong: None declared, Yu-Feng Qing Grant/research support from: Science and Technology Project of Nanchong City (no.18SXHZ0522)
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Xiong Q, Qin B, Xin L, Yang B, Hu Y. P86.10 Real-World Efficacy and Safety of Anlotinib with and without Immunotherapy in Advanced Non-Small Cell Lung Cancer. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.1239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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11
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Jing J, Zhang S, Yuan L, Li Y, Lin Z, Xiong Q, Zhao B. Combining humic acid with phosphate fertilizer affects humic acid structure and its stimulating efficacy on the growth and nutrient uptake of maize seedlings. Sci Rep 2020; 10:17502. [PMID: 33060730 PMCID: PMC7562911 DOI: 10.1038/s41598-020-74349-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Accepted: 09/10/2020] [Indexed: 11/27/2022] Open
Abstract
This paper analyzed the compositional and structural changes of humic acid (HA) after combined with phosphate fertilizer (PHA), and investigated its effects on the growth of maize seedlings with four humic acid concentrations. The results showed that the atomic ratios of O/C and (O + N)/N of PHA were significantly lower than those of HA, which indicated that PHA had poor hydrophilicity compared with HA. The spectra of FTIR and NMR results suggested that the relative content of carboxyl group in PHA was higher than that in HA. X-ray photoelectron spectroscopy technology showed that the relative amount of C-C in PHA was lower than that in HA, while C-H was the opposite. The above changes were attributed to the crack of HA structure during the preparation of humic acid enhanced phosphate fertilizer, which was verified by the results from the determination of gel permeation chromatography that there were more low molecular weight components in PHA than that in HA. However, compared with HA, PHA showed a worse effect in promoting growth and the uptake of nitrogen, phosphorus and potassium by maize seedlings. This worse effect might be attributed to the poor hydrophilicity and unsuitable addition amount of PHA.
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Affiliation(s)
- Jianyuan Jing
- Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture and Rural Affairs / Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Shuiqin Zhang
- Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture and Rural Affairs / Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Liang Yuan
- Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture and Rural Affairs / Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Yanting Li
- Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture and Rural Affairs / Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Zhian Lin
- Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture and Rural Affairs / Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Qizhong Xiong
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei, 230036, China
| | - Bingqiang Zhao
- Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture and Rural Affairs / Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, China.
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Zhang D, Zhang S, Wang J, Li Q, Xue H, Sheng R, Xiong Q, Qi X, Wen J, Fan Y, Zhou B, Yuan Q. LepR-Expressing Stem Cells Are Essential for Alveolar Bone Regeneration. J Dent Res 2020; 99:1279-1286. [PMID: 32585118 DOI: 10.1177/0022034520932834] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Stem cells play a critical role in bone regeneration. Multiple populations of skeletal stem cells have been identified in long bone, while their identity and functions in alveolar bone remain unclear. Here, we identified a quiescent leptin receptor–expressing (LepR+) cell population that contributed to intramembranous bone formation. Interestingly, these LepR+ cells became activated in response to tooth extraction and generated the majority of the newly formed bone in extraction sockets. In addition, genetic ablation of LepR+ cells attenuated extraction socket healing. The parabiosis experiments revealed that the LepR+ cells in the healing sockets were derived from resident tissue rather than peripheral blood circulation. Further studies on the mechanism suggested that these LepR+ cells were responsive to parathyroid hormone/parathyroid hormone 1 receptor (PTH/PTH1R) signaling. Collectively, we demonstrate that LepR+ cells, a postnatal skeletal stem cell population, are essential for alveolar bone regeneration of extraction sockets.
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Affiliation(s)
- D. Zhang
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - S. Zhang
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- Department of Oral Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - J. Wang
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- Department of Periodontology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Q. Li
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - H. Xue
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - R. Sheng
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Q. Xiong
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - X. Qi
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - J. Wen
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Y. Fan
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - B.O. Zhou
- State Key Laboratory of Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences; University of Chinese Academy of Sciences, Shanghai, China
| | - Q. Yuan
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- Department of Oral Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
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Xu G, Jin M, Wang F, Kalkhajeh YK, Xiong Q, Zhang L, Tao M, Gao H. Construction of a phosphate-rich polyacrylonitrile fiber surface microenvironment for efficient purification of crystal violet wastewater. RSC Adv 2019; 9:37630-37641. [PMID: 35542276 PMCID: PMC9075811 DOI: 10.1039/c9ra07199g] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2019] [Accepted: 11/11/2019] [Indexed: 11/21/2022] Open
Abstract
Wastewater purification using fibrous adsorbents has received much attention due to their high efficiency, low cost, and recyclability. In this work, phosphate modified polyacrylonitrile fiber (B-PANEAPF) was prepared and used to remove cationic dyes. The B-PANEAPF showed the best adsorption capacity for crystal violet (CV) when compared with rhodamine B, methyl green, Victoria blue B, methylene blue, and neutral red. The adsorption tests revealed that the fiber possessed high adsorption efficiency and achieved semi-saturated adsorption within 15 min. The maximum adsorption capacity of 354.46 mg g-1 as calculated by the Langmuir adsorption model was higher than many other adsorbents. Furthermore, the B-PANEAPF was used to remove 210 mL of CV in a continuous-flow process with a high removal efficiency over 90%. Besides, the phosphate functionalized fiber could easily decrease the concentration of CV to below 0.5 mg L-1 which is below the maximum effluent discharge standard of 15 mg L-1 prescribed in China. It could also be fully recovered and easily separated from the solution to achieve re-use 10 cycles. Moreover, the adsorption mechanism indicated that the adsorption process of the fiber for CV was mainly attributed to electrostatic interaction and hydrogen bonding. In conclusion, the results suggested that the B-PANEAPF characterized by its simplicity, efficiency, eco-friendliness, and reusability, could be a promising candidate for CV removal.
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Affiliation(s)
- Gang Xu
- Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, School of Resource and Environment, Anhui Agricultural University Hefei 230036 P. R. China
- Research Centre of Phosphorous Highly Efficient Utilization and Water Environment Protection, Yangtze River Economic Zone P. R. China
| | - Mengcan Jin
- Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, School of Resource and Environment, Anhui Agricultural University Hefei 230036 P. R. China
- Research Centre of Phosphorous Highly Efficient Utilization and Water Environment Protection, Yangtze River Economic Zone P. R. China
| | - Fangjia Wang
- Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, School of Resource and Environment, Anhui Agricultural University Hefei 230036 P. R. China
| | - Yusef Kianpoor Kalkhajeh
- Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, School of Resource and Environment, Anhui Agricultural University Hefei 230036 P. R. China
- Research Centre of Phosphorous Highly Efficient Utilization and Water Environment Protection, Yangtze River Economic Zone P. R. China
| | - Qizhong Xiong
- Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, School of Resource and Environment, Anhui Agricultural University Hefei 230036 P. R. China
- Research Centre of Phosphorous Highly Efficient Utilization and Water Environment Protection, Yangtze River Economic Zone P. R. China
| | - Liangliang Zhang
- Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, School of Resource and Environment, Anhui Agricultural University Hefei 230036 P. R. China
- Research Centre of Phosphorous Highly Efficient Utilization and Water Environment Protection, Yangtze River Economic Zone P. R. China
| | - Minli Tao
- Department of Chemistry, School of Sciences, Tianjin University Tianjin 300072 P. R. China
| | - Hongjian Gao
- Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, School of Resource and Environment, Anhui Agricultural University Hefei 230036 P. R. China
- Research Centre of Phosphorous Highly Efficient Utilization and Water Environment Protection, Yangtze River Economic Zone P. R. China
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Ye X, Hu H, Li H, Xiong Q, Gao H. Combined nitrogen fertilizer and wheat straw increases the cadmium phytoextraction efficiency of Tagetes patula. Ecotoxicol Environ Saf 2019; 170:210-217. [PMID: 30529915 DOI: 10.1016/j.ecoenv.2018.11.135] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2018] [Revised: 11/26/2018] [Accepted: 11/29/2018] [Indexed: 06/09/2023]
Abstract
The soil cadmium (Cd) availability and uptake by Tagetes patula grown in two soil types contaminated with Cd and amended with N fertilizer and wheat straw were studied in a pot-culture experiment. The results indicated that N fertilizer treatment (N) and N fertilizer plus straw treatment (NS) promoted T. patula growth, while straw treatment (S) decreased T. patula biomass relative to the control. NS and S treatments increased Cd mobility in the soil and facilitated its uptake by T. patula in Acidic Ferralsols (AF) and Calcaric Cambisols (CC), but the promotion effect was much greater in CC than in AF. The Cd concentrations in the Tagetes shoots in the S and NS treatments were 40% and 27% greater, respectively, than those in the control treatment for AF, and 111% and 80% greater, respectively, for CC. Decreases in soil pH and increases in dissoluble organic carbon concentration after adding N fertilizer and straw were associated with an increase in soil Cd availability and in Cd uptake by T. patula. The results indicate that the NS treatment can alter the soil microenvironment, increasing Cd bioavailability and thus facilitating Cd uptake by T. patula. This work highlights that the combined application of N fertilizer with straw may be a useful way to increase the phytoextraction efficiency of Cd-contaminated soil by the Cd-hyperaccumulator T. patula.
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Affiliation(s)
- Xinxin Ye
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
| | - Hongxiang Hu
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
| | - Hongying Li
- Institute of Soil and Fertilizer, Anhui Academy of Agricultural Sciences, Hefei 230031, China.
| | - Qizhong Xiong
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
| | - Hongjian Gao
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei 230036, China.
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Ye X, Ma J, Wei J, Sun K, Xiong Q. Comparison of the bioavailability of benzo[a]pyrene (B[a]P) in a B[a]P-contaminated soil using the different addition approaches. Sci Rep 2019; 9:3848. [PMID: 30846813 PMCID: PMC6405738 DOI: 10.1038/s41598-019-40813-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Accepted: 02/22/2019] [Indexed: 11/12/2022] Open
Abstract
Determination of the bioavailability of the hydrophobic organic contaminant benzo[a]pyrene (B[a]P) is extremely important for assessing its environmental risk. The effect of addition manner of B[a]P on the bioavailability and toxicity of B[a]P in soil remains unclear. In this study, soil samples, spiked with B[a]P by one-time or multiple-time additions, were tested to investigate the available fraction of B[a]P in soils, the uptake of B[a]P by red wiggler worms (Eisenia fetida), as well as superoxide dismutase (SOD) and peroxidase (POD) activities in earthworm coelomocytes at different periods. Results showed that the available fraction of B[a]P in soils and the amount of B[a]P assimilated by earthworms declined sharply from 1 d to 28 d during the incubation period and then decreased slowly from 28 to 56 d in both the one-time and the multiple-time addition tests. The available fraction of B[a]P in soils and its uptake by earthworms were significantly lower in multiple-time addition samples than those in one-time addition samples, a finding which was consistent with the SOD and POD activities in earthworms during the whole 56-d incubation period. These variations in the characteristics of the two addition treatments may be due to the differences in the way the B[a]P aged in the soil. These results indicated that the addition method was an important factor influencing the bioavailability of organic contaminants in soils.
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Affiliation(s)
- Xinxin Ye
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei, 230036, China
| | - Jingjing Ma
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei, 230036, China
| | - Junling Wei
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei, 230036, China
| | - Kai Sun
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei, 230036, China
| | - Qizhong Xiong
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei, 230036, China.
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Xiong Q, Zhou X, Liu Z, Lei C, Yang C, Yang M, Zhu T, Zhang L, Tian J, Wang K. Multiparametric MRI-based radiomics analysis for prediction of breast cancers insensitive to neoadjuvant chemotherapy. Breast 2019. [DOI: 10.1016/s0960-9776(19)30256-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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17
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Lei C, Wei W, Liu Z, Xiong Q, Yang C, Yang M, Zhu T, Zhang L, Tian J, Wang K. Radiomics analysis for pathological classification prediction in BI-RADS category 4 mammographic calcifications. Breast 2019. [DOI: 10.1016/s0960-9776(19)30187-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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18
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Liu G, Zhang X, Zhao C, Xiong Q, Gong W, Wang G, Zhang Y, Zhang H, Zhao H. Correction: Electrocatalytic oxidation of benzyl alcohol for simultaneously promoting H 2 evolution by a Co 0.83Ni 0.17/activated carbon electrocatalyst. NEW J CHEM 2019. [DOI: 10.1039/c9nj90061f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Correction for ‘Electrocatalytic oxidation of benzyl alcohol for simultaneously promoting H2 evolution by a Co0.83Ni0.17/activated carbon electrocatalyst’ by Guoqiang Liu et al., New J. Chem., 2018, 42, 6381–6388.
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Affiliation(s)
- Guoqiang Liu
- Key Laboratory of Materials Physics
- Centre for Environmental and Energy Nanomaterials
- Anhui Key Laboratory of Nanomaterials and Nanostructures
- Institute of Solid State Physics
- Chinese Academy of Science
| | - Xian Zhang
- Key Laboratory of Materials Physics
- Centre for Environmental and Energy Nanomaterials
- Anhui Key Laboratory of Nanomaterials and Nanostructures
- Institute of Solid State Physics
- Chinese Academy of Science
| | - Cuijiao Zhao
- Key Laboratory of Materials Physics
- Centre for Environmental and Energy Nanomaterials
- Anhui Key Laboratory of Nanomaterials and Nanostructures
- Institute of Solid State Physics
- Chinese Academy of Science
| | - Qizhong Xiong
- Key Laboratory of Materials Physics
- Centre for Environmental and Energy Nanomaterials
- Anhui Key Laboratory of Nanomaterials and Nanostructures
- Institute of Solid State Physics
- Chinese Academy of Science
| | - Wanbing Gong
- Key Laboratory of Materials Physics
- Centre for Environmental and Energy Nanomaterials
- Anhui Key Laboratory of Nanomaterials and Nanostructures
- Institute of Solid State Physics
- Chinese Academy of Science
| | - Guozhong Wang
- Key Laboratory of Materials Physics
- Centre for Environmental and Energy Nanomaterials
- Anhui Key Laboratory of Nanomaterials and Nanostructures
- Institute of Solid State Physics
- Chinese Academy of Science
| | - Yunxia Zhang
- Key Laboratory of Materials Physics
- Centre for Environmental and Energy Nanomaterials
- Anhui Key Laboratory of Nanomaterials and Nanostructures
- Institute of Solid State Physics
- Chinese Academy of Science
| | - Haimin Zhang
- Key Laboratory of Materials Physics
- Centre for Environmental and Energy Nanomaterials
- Anhui Key Laboratory of Nanomaterials and Nanostructures
- Institute of Solid State Physics
- Chinese Academy of Science
| | - Huijun Zhao
- Key Laboratory of Materials Physics
- Centre for Environmental and Energy Nanomaterials
- Anhui Key Laboratory of Nanomaterials and Nanostructures
- Institute of Solid State Physics
- Chinese Academy of Science
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Xiong Q, Bai Y. [Rapeutic effect analysis of the auricle appliance on 2-6 months old infants with congenital auricle deformity]. Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2018; 32:1163-1166. [PMID: 30282149 DOI: 10.13201/j.issn.1001-1781.2018.15.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Indexed: 06/08/2023]
Abstract
Objective: To study the effect of amazing ear correction system on 2-6 months old infants with congenital ear deformity. Method: Thirty infants (37 ears) with congenital auricular deformities were enrolled in the study. Deformities included constriction, cryptopia, helicalrim, prominent, conchal strut, and Stahl deformities and microtia. The patients were divided into 2 groups. Infants elder than 2 months were 20 cases(26 auricular malformed ears). And infants under 2 months old were 10 cases(11 auricular malformed ears). All the patients underwent ear molding using the amazing ears correction system. The patients of each group were followed-up for at least 3 months. Result: The results were divided into three levels(excellent, good, and poor) according to the correction of auricular shape. In Group elder than 2 months, 13 ears were excellent and the average treatment time was 46.85 days,5 ears were good, the average treatment time was 43.40 days and 8 ears were poor, the average treatment time was 13.13 days. In Group under 2 months old, 5 ears were excellent and the average treatment time was 28.80 days,6 ears were good and the average treatment time was 18.66 days. The patients of each group were followed-up for at least 3 months and no rebound occurred. Conclusion:Ear correction system has a significant effect on those more than 2 months and less than 6 months with congenital auricular deformity. The children who were more than 2 months old need to wear the auricle appliance over 6 weeks to achieve a satisfactory effect.
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Affiliation(s)
- Q Xiong
- Department of Otolaryngology,Children' s Hospital of Chongqing Medical University,Chongqing, 400014, China; Ministry of Education Key Laboratory of child Development and Disorders; China International Science and Technology cooperation base of child development and Critical Disorders; Chongqing Key Laboratory of Pediatrics
| | - Y Bai
- Department of Otolaryngology,Children' s Hospital of Chongqing Medical University,Chongqing, 400014, China; Ministry of Education Key Laboratory of child Development and Disorders; China International Science and Technology cooperation base of child development and Critical Disorders; Chongqing Key Laboratory of Pediatrics
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Xiong Q, Wang Y, Liu PF, Zheng LR, Wang G, Yang HG, Wong PK, Zhang H, Zhao H. Cobalt Covalent Doping in MoS 2 to Induce Bifunctionality of Overall Water Splitting. Adv Mater 2018; 30:e1801450. [PMID: 29808597 DOI: 10.1002/adma.201801450] [Citation(s) in RCA: 188] [Impact Index Per Article: 31.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2018] [Revised: 04/12/2018] [Indexed: 05/22/2023]
Abstract
The layer-structured MoS2 is a typical hydrogen evolution reaction (HER) electrocatalyst but it possesses poor activity for the oxygen evolution reaction (OER). In this work, a cobalt covalent doping approach capable of inducing HER and OER bifunctionality into MoS2 for efficient overall water splitting is reported. The results demonstrate that covalently doping cobalt into MoS2 can lead to dramatically enhanced HER activity while simultaneously inducing remarkable OER activity. The catalyst with optimal cobalt doping density can readily achieve HER and OER onset potentials of -0.02 and 1.45 V (vs reversible hydrogen electrode (RHE)) in 1.0 m KOH. Importantly, it can deliver high current densities of 10, 100, and 200 mA cm-2 at low HER and OER overpotentials of 48, 132, 165 mV and 260, 350, 390 mV, respectively. The reported catalyst activation approach can be adapted for bifunctionalization of other transition metal dichalcogenides.
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Affiliation(s)
- Qizhong Xiong
- Key Laboratory of Materials Physics, Centre for Environmental and Energy Nanomaterials, Anhui Key Laboratory of Nanomaterials and Nanotechnology, CAS Center for Excellence in Nanoscience, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, 230031, China
- University of Science and Technology of China, Hefei, 230026, China
| | - Yun Wang
- Centre for Clean Environment and Energy, Griffith University, Gold Coast Campus, QLD, 4222, Australia
| | - Peng-Fei Liu
- Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China
| | - Li-Rong Zheng
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, 19B Yuquan Road, Beijing, 100049, China
| | - Guozhong Wang
- Key Laboratory of Materials Physics, Centre for Environmental and Energy Nanomaterials, Anhui Key Laboratory of Nanomaterials and Nanotechnology, CAS Center for Excellence in Nanoscience, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, 230031, China
| | - Hua-Gui Yang
- Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China
| | - Po-Keung Wong
- School of Life Sciences, The Chinese University of Hong Kong, Shatin, NT, Hong Kong SAR, China
| | - Haimin Zhang
- Key Laboratory of Materials Physics, Centre for Environmental and Energy Nanomaterials, Anhui Key Laboratory of Nanomaterials and Nanotechnology, CAS Center for Excellence in Nanoscience, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, 230031, China
| | - Huijun Zhao
- Key Laboratory of Materials Physics, Centre for Environmental and Energy Nanomaterials, Anhui Key Laboratory of Nanomaterials and Nanotechnology, CAS Center for Excellence in Nanoscience, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, 230031, China
- Centre for Clean Environment and Energy, Griffith University, Gold Coast Campus, QLD, 4222, Australia
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Zhu BW, Xiong Q, Ni F, Sun Y, Yao Z. High-level expression and characterization of a new κ-carrageenase from marine bacterium Pedobacter hainanensis NJ-02. Lett Appl Microbiol 2018; 66:409-415. [PMID: 29432646 DOI: 10.1111/lam.12865] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Revised: 01/30/2018] [Accepted: 02/04/2018] [Indexed: 11/27/2022]
Abstract
A novel κ-carrageenase gene (CgkB) has been cloned from Pedobacter hainanensis NJ-02 and expressed heterologously in Escherichia coli BL21 (DE3). It consisted of 1935 bp and encoded 644 amino acid residues with a molecular weight of 71·61 kDa. The recombinant enzyme showed maximal activity of 2458 U mg-1 at 40°C and pH 8·0. Additionally, it could retain more than 70% of its maximal activity after being incubated at pH of 5·5-10·0 below 40°C. K+ and a broad range of NaCl can activate the enzyme. The Km and Vmax of CgkB was 2·4 mg ml-1 and 126 mmol mg-1 min-1 . The ESI-MS analysis of hydrolysates indicated that the enzyme can endolytically depolymerize the carrageenan into tetrasaccharides and hexasaccharides. The results indicated that the enzyme with high activity could be a valuable enzyme tool to produce carrageenan oligosaccharides with various activities. SIGNIFICANCE AND IMPACT OF THE STUDY Enzymatic preparation of carrageenan oligosaccharides has drawn increased attention due to their various physiological activities. It is urgent to explore enzyme tools with higher activity and better stability. In this work, a novel κ-carrageenase was identified and characterized from marine bacterium Pedobacter hainanensis NJ-02. The enzyme with high activity could be a valuable tool to produce carrageenan oligosaccharides with various activities.
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Affiliation(s)
- B-W Zhu
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, China
| | - Q Xiong
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, China
| | - F Ni
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, China
| | - Y Sun
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, China
| | - Z Yao
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, China
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Hu X, Xiong Q, Xu Y, Zhang X, Pan X, Ma X, Bao Y, Jia W. Association of serum fibroblast growth factor 19 levels with visceral fat accumulation is independent of glucose tolerance status. Nutr Metab Cardiovasc Dis 2018; 28:119-125. [PMID: 29174027 DOI: 10.1016/j.numecd.2017.10.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Revised: 09/21/2017] [Accepted: 10/10/2017] [Indexed: 01/20/2023]
Abstract
BACKGROUND AND AIMS Recent studies suggested that circulating fibroblast growth factor (FGF) 19 levels might be associated with the fat content and distribution, and varied with different glucose tolerance status. This study aimed to investigate the association of serum FGF19 levels with obesity and visceral fat accumulation in a Chinese population with differing glucose tolerance status. METHODS AND RESULTS The 2383 participants were divided into subgroups of glucose tolerance status: normal glucose tolerance (NGT, n = 1754), impaired glucose regulation (IGR, n = 499), and newly diagnosed diabetes mellitus (DM, n = 130). They were further stratified into quartiles of serum FGF19 levels (Q1-Q4). Visceral fat area (VFA) and subcutaneous fat area were measured using magnetic resonance imaging. FGF19 were detected via quantitative sandwich enzyme-linked immunosorbent assay. Serum FGF19 levels showed a downtrend across the NGT, IGR, and DM groups (P for trend = 0.016). VFA was an independent and negative factor of serum FGF19 levels (standardized β = -0.108, P = 0.001). After adjustment for glucose tolerance status, VFA differed significantly among FGF19 quartiles (P < 0.001), showing a downtrend from Q1-Q4. The associations of serum FGF19 levels and glucose tolerance status with VFA were independent of each other. After adjustment for insulin resistance and secretory function separately, VFA still decreased significantly from Q1-Q4 (all P < 0.001). CONCLUSION Serum FGF19 levels were related to visceral fat accumulation. Independent of glucose tolerance status, serum FGF19 levels were inversely associated with VFA.
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Affiliation(s)
- X Hu
- Department of Endocrinology and Metabolism, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai Clinical Center for Diabetes, Shanghai Key Clinical Center for Metabolic Disease, Shanghai Diabetes Institute, Shanghai Key Laboratory of Diabetes Mellitus, Shanghai 200233, China
| | - Q Xiong
- Department of Endocrinology and Metabolism, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai Clinical Center for Diabetes, Shanghai Key Clinical Center for Metabolic Disease, Shanghai Diabetes Institute, Shanghai Key Laboratory of Diabetes Mellitus, Shanghai 200233, China
| | - Y Xu
- Department of Endocrinology and Metabolism, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai Clinical Center for Diabetes, Shanghai Key Clinical Center for Metabolic Disease, Shanghai Diabetes Institute, Shanghai Key Laboratory of Diabetes Mellitus, Shanghai 200233, China
| | - X Zhang
- Department of Endocrinology and Metabolism, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai Clinical Center for Diabetes, Shanghai Key Clinical Center for Metabolic Disease, Shanghai Diabetes Institute, Shanghai Key Laboratory of Diabetes Mellitus, Shanghai 200233, China
| | - X Pan
- Department of Endocrinology and Metabolism, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai Clinical Center for Diabetes, Shanghai Key Clinical Center for Metabolic Disease, Shanghai Diabetes Institute, Shanghai Key Laboratory of Diabetes Mellitus, Shanghai 200233, China
| | - X Ma
- Department of Endocrinology and Metabolism, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai Clinical Center for Diabetes, Shanghai Key Clinical Center for Metabolic Disease, Shanghai Diabetes Institute, Shanghai Key Laboratory of Diabetes Mellitus, Shanghai 200233, China.
| | - Y Bao
- Department of Endocrinology and Metabolism, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai Clinical Center for Diabetes, Shanghai Key Clinical Center for Metabolic Disease, Shanghai Diabetes Institute, Shanghai Key Laboratory of Diabetes Mellitus, Shanghai 200233, China.
| | - W Jia
- Department of Endocrinology and Metabolism, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai Clinical Center for Diabetes, Shanghai Key Clinical Center for Metabolic Disease, Shanghai Diabetes Institute, Shanghai Key Laboratory of Diabetes Mellitus, Shanghai 200233, China
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Liu G, Zhang X, Zhao C, Xiong Q, Gong W, Wang G, Zhang Y, Zhang H, Zhao H. Electrocatalytic oxidation of benzyl alcohol for simultaneously promoting H2 evolution by a Co0.83Ni0.17/activated carbon electrocatalyst. NEW J CHEM 2018. [DOI: 10.1039/c8nj00446c] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Co0.83Ni0.17 alloy nanoparticles on activated carbon were successfully fabricated by a simple thermal-treatment method, as electrocatalyst exhibiting superior HER, OER and electrocatalytic oxidation activity toward benzyl alcohol.
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Affiliation(s)
- Guoqiang Liu
- Key Laboratory of Materials Physics
- Centre for Environmental and Energy Nanomaterials
- Anhui Key Laboratory of Nanomaterials and Nanostructures
- Institute of Solid State Physics
- Chinese Academy of Science
| | - Xian Zhang
- Key Laboratory of Materials Physics
- Centre for Environmental and Energy Nanomaterials
- Anhui Key Laboratory of Nanomaterials and Nanostructures
- Institute of Solid State Physics
- Chinese Academy of Science
| | - Cuijiao Zhao
- Key Laboratory of Materials Physics
- Centre for Environmental and Energy Nanomaterials
- Anhui Key Laboratory of Nanomaterials and Nanostructures
- Institute of Solid State Physics
- Chinese Academy of Science
| | - Qizhong Xiong
- Key Laboratory of Materials Physics
- Centre for Environmental and Energy Nanomaterials
- Anhui Key Laboratory of Nanomaterials and Nanostructures
- Institute of Solid State Physics
- Chinese Academy of Science
| | - Wanbing Gong
- Key Laboratory of Materials Physics
- Centre for Environmental and Energy Nanomaterials
- Anhui Key Laboratory of Nanomaterials and Nanostructures
- Institute of Solid State Physics
- Chinese Academy of Science
| | - Guozhong Wang
- Key Laboratory of Materials Physics
- Centre for Environmental and Energy Nanomaterials
- Anhui Key Laboratory of Nanomaterials and Nanostructures
- Institute of Solid State Physics
- Chinese Academy of Science
| | - Yunxia Zhang
- Key Laboratory of Materials Physics
- Centre for Environmental and Energy Nanomaterials
- Anhui Key Laboratory of Nanomaterials and Nanostructures
- Institute of Solid State Physics
- Chinese Academy of Science
| | - Haimin Zhang
- Key Laboratory of Materials Physics
- Centre for Environmental and Energy Nanomaterials
- Anhui Key Laboratory of Nanomaterials and Nanostructures
- Institute of Solid State Physics
- Chinese Academy of Science
| | - Huijun Zhao
- Key Laboratory of Materials Physics
- Centre for Environmental and Energy Nanomaterials
- Anhui Key Laboratory of Nanomaterials and Nanostructures
- Institute of Solid State Physics
- Chinese Academy of Science
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Xiong Q, Zhang X, Wang H, Liu G, Wang G, Zhang H, Zhao H. One-step synthesis of cobalt-doped MoS2 nanosheets as bifunctional electrocatalysts for overall water splitting under both acidic and alkaline conditions. Chem Commun (Camb) 2018; 54:3859-3862. [DOI: 10.1039/c8cc00766g] [Citation(s) in RCA: 150] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Cobalt covalent doping in MoS2 effectively regulates its electronic structure to decrease the hydrogen adsorption free energy for high HER and simultaneously contributes additional catalytic active sites for the OER.
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Affiliation(s)
- Qizhong Xiong
- Key Laboratory of Materials Physics
- Centre for Environmental and Energy Nanomaterials
- Anhui Key Laboratory of Nanomaterials and Nanotechnology
- CAS Center for Excellence in Nanoscience
- Institute of Solid State Physics
| | - Xian Zhang
- Key Laboratory of Materials Physics
- Centre for Environmental and Energy Nanomaterials
- Anhui Key Laboratory of Nanomaterials and Nanotechnology
- CAS Center for Excellence in Nanoscience
- Institute of Solid State Physics
| | - Haojie Wang
- Key Laboratory of Materials Physics
- Centre for Environmental and Energy Nanomaterials
- Anhui Key Laboratory of Nanomaterials and Nanotechnology
- CAS Center for Excellence in Nanoscience
- Institute of Solid State Physics
| | - Guoqiang Liu
- Key Laboratory of Materials Physics
- Centre for Environmental and Energy Nanomaterials
- Anhui Key Laboratory of Nanomaterials and Nanotechnology
- CAS Center for Excellence in Nanoscience
- Institute of Solid State Physics
| | - Guozhong Wang
- Key Laboratory of Materials Physics
- Centre for Environmental and Energy Nanomaterials
- Anhui Key Laboratory of Nanomaterials and Nanotechnology
- CAS Center for Excellence in Nanoscience
- Institute of Solid State Physics
| | - Haimin Zhang
- Key Laboratory of Materials Physics
- Centre for Environmental and Energy Nanomaterials
- Anhui Key Laboratory of Nanomaterials and Nanotechnology
- CAS Center for Excellence in Nanoscience
- Institute of Solid State Physics
| | - Huijun Zhao
- Key Laboratory of Materials Physics
- Centre for Environmental and Energy Nanomaterials
- Anhui Key Laboratory of Nanomaterials and Nanotechnology
- CAS Center for Excellence in Nanoscience
- Institute of Solid State Physics
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Zhu C, Wang X, Shi X, Yang F, Meng G, Xiong Q, Ke Y, Wang H, Lu Y, Wu N. Detection of Dithiocarbamate Pesticides with a Spongelike Surface-Enhanced Raman Scattering Substrate Made of Reduced Graphene Oxide-Wrapped Silver Nanocubes. ACS Appl Mater Interfaces 2017; 9:39618-39625. [PMID: 29058868 DOI: 10.1021/acsami.7b13479] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Dithiocarbamate (DTC) pesticides are widely used for fruits, vegetables, and mature crops to control fungal diseases. Their residues in food could pose a threat to human health. Therefore, a surface-enhanced Raman scattering-based (SERS-based) sensor is developed to detect DTC pesticides because SERS can provide the characteristic spectrum of pesticides and avoid the use of a molecular recognition probe in the sensor. For the acquisition of high sensitivity, good anti-interference ability, and robustness of the SERS sensor, a silver nanocube-reduced graphene oxide (AgNC-rGO) sponge is devised. In the AgNC-rGO sponge, the rGO sheets form a porous scaffold that physically holds the AgNCs, which create narrow gaps between the neighboring AgNCs, leading to the formation of "hot spots" for SERS-signal amplification. When DTC pesticides coexist with aromatic pesticides in a sample matrix, the AgNC-rGO sponge can selectively detect DTC pesticides because of the preferential adsorption of DTC pesticides on the Ag surface and aromatic pesticides on the rGO surface, which can effectively eliminate the interference of the SERS signals of aromatic pesticides, and facilitate the qualitative and quantitative analysis of DTC pesticides. The AgNC-rGO sponge shows great potential as a SERS substrate for selective detection of DTC pesticides.
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Affiliation(s)
- Chuhong Zhu
- Key Laboratory of Materials Physics, CAS Center for Excellence in Nanoscience, and Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Chinese Academy of Sciences , Hefei 230031, China
| | - Xiujuan Wang
- Key Laboratory of Materials Physics, CAS Center for Excellence in Nanoscience, and Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Chinese Academy of Sciences , Hefei 230031, China
| | - Xiaofei Shi
- Industrial and Management Systems Engineering Department, West Virginia University , Morgantown, West Virginia 26506, United States
| | - Feng Yang
- Industrial and Management Systems Engineering Department, West Virginia University , Morgantown, West Virginia 26506, United States
| | - Guowen Meng
- Key Laboratory of Materials Physics, CAS Center for Excellence in Nanoscience, and Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Chinese Academy of Sciences , Hefei 230031, China
| | - Qizhong Xiong
- Key Laboratory of Materials Physics, CAS Center for Excellence in Nanoscience, and Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Chinese Academy of Sciences , Hefei 230031, China
| | - Yan Ke
- Key Laboratory of Materials Physics, CAS Center for Excellence in Nanoscience, and Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Chinese Academy of Sciences , Hefei 230031, China
| | - Hua Wang
- Key Laboratory of Materials Physics, CAS Center for Excellence in Nanoscience, and Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Chinese Academy of Sciences , Hefei 230031, China
| | - Yilin Lu
- Institute of Technical Biology and Agriculture Engineering, Hefei Institutes of Physical Science, Chinese Academy of Sciences , Hefei 230031, China
| | - Nianqiang Wu
- Department of Mechanical and Aerospace Engineering, West Virginia University , P.O. Box 6106, Morgantown, West Virginia 26506, United States
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Xiong Q, Bao YQ. [Comment on metabolic surgery as the treatment algorithm for type 2 diabetes: a joint statement by international diabetes organizations]. Zhonghua Nei Ke Za Zhi 2017; 56:385-387. [PMID: 28460513 DOI: 10.3760/cma.j.issn.0578-1426.2017.05.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Xiong Q, Geng TT, He L, Gao H. Harm and Benefits of Salvage Transplantation for Hepatocellular Carcinoma: An Updated Meta-analysis. Transplant Proc 2017; 48:3336-3347. [PMID: 27931579 DOI: 10.1016/j.transproceed.2016.09.047] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2016] [Accepted: 09/01/2016] [Indexed: 02/08/2023]
Abstract
OBJECTIVE The aim of this work was to compare salvage liver transplantation (SLT) and primary liver transplantation (PLT) in terms of the harm and benefits. METHODS The authors searched Pubmed, Embase, and the Cochrane Library from their dates of establishment to December 2015. Based on selection and exclusion criteria, 2 researchers screened the literature independently. The meta-analysis was performed with the use of the Review Manager software. Meta-analysis of the pooled standard mean difference (SMD) and odds ratio (OR) with 95% confidence interval (CI) were calculated based on either a fixed-effects or a random-effects model. In addition, risk of bias was assessed with the use of the Newcastle-Ottawa scale. RESULTS Sixteen studies were selected, involving almost 8,707 patients. According to the pooled estimates, compared with PLT, SLT was associated with a longer operative time (SMD, 0.28; 95% CI, 0.11-0.46;), higher intraoperative blood loss (SMD, 0.41; 95% CI, 0.08-0.75;), more postoperative bleeding (OR, 1.95; 95% CI, 1.10-3.45), an increased risk of recurrence (OR, 2.08; 95% CI, 1.24-3.50), and poorer 3-year (OR, 0.86; 95% CI, 0.76-0.98) and 5-year (OR, 0.86; 95% CI, 0.76-0.98) overall survival rates. However, no difference was detected between case and control groups in either rates of postoperative complications or such aspects as perioperative mortality, length of intensive care unit stay, length of hospital stay, and 1-year overall survival rate. CONCLUSIONS The 3-year and 5-year overall survival rates were inferior in SLT, which shows that PLT is a better treatment strategy for transplantable hepatocellular carcinoma (HCC). However, considering the severe organ limitation and the feasibility and safety of SLT, it provides a better option for patients with HCC recurrence after curative resection.
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Affiliation(s)
- Q Xiong
- Department of Hepatobiliary Surgery, People's Hospital of Deyang City, Deyang, Sichuan, People's Republic of China
| | - T-T Geng
- School of Public Health, University of Queensland, Brisbane, Queensland, Australia
| | - L He
- Department of Nursing, People's Hospital of Deyang City, Deyang, Sichuan, People's Republic of China.
| | - H Gao
- Center for Lipid Research, Key Laboratory of Molecular Biology on Infectious Diseases, Ministry of Education, Chongqing Medical University, Chongqing, People's Republic of China
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Lau YC, Xiong Q, Ranjit P, Lip GYH, Blann AD. Laboratory assessment of anti-thrombotic therapy in heart failure, atrial fibrillation and coronary artery disease: insights using thrombelastography and a micro-titre plate assay of thrombogenesis and fibrinolysis. J Thromb Thrombolysis 2017; 42:233-44. [PMID: 26942726 PMCID: PMC4912975 DOI: 10.1007/s11239-016-1344-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
As heart failure, coronary artery disease and atrial fibrillation all bring a risk of thrombosis, anti-thrombotic therapy is recommended. Despite such treatment, major cardiovascular events such as myocardial infarction and stroke still occur, implying inadequate suppression of thrombus formation. Accordingly, identification of patients whose haemostasis remains unimpaired by treatment is valuable. We compared indices for assessing thrombogenesis and fibrinolysis by two different techniques in patients on different anti-thrombotic agents, i.e. aspirin or warfarin. We determined fibrin clot formation and fibrinolysis by a microplate assay and thromboelastography, and platelet marker soluble P selectin in 181 patients with acute or chronic heart failure, coronary artery disease who were taking either aspirin or warfarin. Five thromboelastograph indices and four microplate assay indices were different on aspirin versus warfarin (p < 0.05). In multivariate regression analysis, only microplate assay indices rate of clot formation and rate of clot dissolution were independently related to aspirin or warfarin use (p ≤ 0.001). Five microplate assay indices, but no thrombelastograph index, were different (p < 0.001) in aspirin users. Three microplate assay indices were different (p ≤ 0.002) in warfarin users. The microplate assay indices of lag time and rate of clot formation were abnormal in chronic heart failure patients on aspirin, suggesting increased risk of thrombosis despite anti-platelet use. Soluble P selectin was lower in patients on aspirin (p = 0.0175) but failed to correlate with any other index of haemostasis. The microplate assay shows promise as a tool for dissecting thrombogenesis and fibrinolysis in cardiovascular disease, and the impact of antithrombotic therapy. Prospective studies are required to determine a role in predicting thrombotic risk.
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Affiliation(s)
- Y C Lau
- University of Birmingham Institute for Cardiovascular Sciences City Hospital, Dudley Road, Birmingham, B18 7QH, UK
| | - Q Xiong
- University of Birmingham Institute for Cardiovascular Sciences City Hospital, Dudley Road, Birmingham, B18 7QH, UK
- Cardiovascular Department, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - P Ranjit
- University of Birmingham Institute for Cardiovascular Sciences City Hospital, Dudley Road, Birmingham, B18 7QH, UK
| | - G Y H Lip
- University of Birmingham Institute for Cardiovascular Sciences City Hospital, Dudley Road, Birmingham, B18 7QH, UK
| | - A D Blann
- University of Birmingham Institute for Cardiovascular Sciences City Hospital, Dudley Road, Birmingham, B18 7QH, UK.
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Hu X, Ma X, Luo Y, Xu Y, Xiong Q, Pan X, Bao Y, Jia W. Contribution of fibroblast growth factor 23 to Framingham risk score for identifying subclinical atherosclerosis in Chinese men. Nutr Metab Cardiovasc Dis 2017; 27:147-153. [PMID: 28017526 DOI: 10.1016/j.numecd.2016.11.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Revised: 10/11/2016] [Accepted: 11/14/2016] [Indexed: 11/30/2022]
Abstract
BACKGROUND AND AIMS Fibroblast growth factor 23 (FGF23) was demonstrated to be involved in the occurrence and development of cardiovascular disease (CVD). The goal of the present study was to investigate the relationship between serum FGF23 levels and carotid intima-media thickness (C-IMT) in men with a low-to-moderate CVD risk. METHODS AND RESULTS Subjects with normal kidney function were selected from the Shanghai Obesity Study. Serum FGF23 levels were determined by sandwich enzyme-linked immunosorbent assay. C-IMT was measured by ultrasonography. The Framingham risk score (FRS) was used to assess CVD risk. A total of 392 men with low CVD risk and 372 men with moderate CVD risk were enrolled. The recognition rate of an elevated C-IMT was 85.66% with the combination of a moderate CVD risk and high serum FGF23 levels, which was greater than that with either parameter alone (65.44% and 61.03%, respectively). Subjects with high serum FGF23 levels, and either low or moderate CVD risk, were more likely to have elevated C-IMT than those with low serum FGF23 levels and low CVD risk (P = 0.014 and 0.001, respectively). The serum FGF23 levels were independently and positively associated with C-IMT in subjects with low or moderate CVD risk (both P = 0.007). CONCLUSION In men with low-to-moderate CVD risk, serum FGF23 levels were associated independently and positively with C-IMT. As a complementary index, serum FGF23 levels strengthen the capacity of the FRS to identify subclinical atherosclerosis.
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Affiliation(s)
- X Hu
- Department of Endocrinology and Metabolism, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China; Shanghai Clinical Center for Diabetes, Shanghai 200233, China; Shanghai Key Clinical Center for Metabolic Disease, Shanghai 200233, China; Shanghai Diabetes Institute, Shanghai 200233, China; Shanghai Key Laboratory of Diabetes Mellitus, Shanghai 200233, China
| | - X Ma
- Department of Endocrinology and Metabolism, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China; Shanghai Clinical Center for Diabetes, Shanghai 200233, China; Shanghai Key Clinical Center for Metabolic Disease, Shanghai 200233, China; Shanghai Diabetes Institute, Shanghai 200233, China; Shanghai Key Laboratory of Diabetes Mellitus, Shanghai 200233, China
| | - Y Luo
- Department of Endocrinology and Metabolism, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China; Shanghai Clinical Center for Diabetes, Shanghai 200233, China; Shanghai Key Clinical Center for Metabolic Disease, Shanghai 200233, China; Shanghai Diabetes Institute, Shanghai 200233, China; Shanghai Key Laboratory of Diabetes Mellitus, Shanghai 200233, China
| | - Y Xu
- Department of Endocrinology and Metabolism, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China; Shanghai Clinical Center for Diabetes, Shanghai 200233, China; Shanghai Key Clinical Center for Metabolic Disease, Shanghai 200233, China; Shanghai Diabetes Institute, Shanghai 200233, China; Shanghai Key Laboratory of Diabetes Mellitus, Shanghai 200233, China
| | - Q Xiong
- Department of Endocrinology and Metabolism, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China; Shanghai Clinical Center for Diabetes, Shanghai 200233, China; Shanghai Key Clinical Center for Metabolic Disease, Shanghai 200233, China; Shanghai Diabetes Institute, Shanghai 200233, China; Shanghai Key Laboratory of Diabetes Mellitus, Shanghai 200233, China
| | - X Pan
- Department of Endocrinology and Metabolism, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China; Shanghai Clinical Center for Diabetes, Shanghai 200233, China; Shanghai Key Clinical Center for Metabolic Disease, Shanghai 200233, China; Shanghai Diabetes Institute, Shanghai 200233, China; Shanghai Key Laboratory of Diabetes Mellitus, Shanghai 200233, China
| | - Y Bao
- Department of Endocrinology and Metabolism, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China; Shanghai Clinical Center for Diabetes, Shanghai 200233, China; Shanghai Key Clinical Center for Metabolic Disease, Shanghai 200233, China; Shanghai Diabetes Institute, Shanghai 200233, China; Shanghai Key Laboratory of Diabetes Mellitus, Shanghai 200233, China.
| | - W Jia
- Department of Endocrinology and Metabolism, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China; Shanghai Clinical Center for Diabetes, Shanghai 200233, China; Shanghai Key Clinical Center for Metabolic Disease, Shanghai 200233, China; Shanghai Diabetes Institute, Shanghai 200233, China; Shanghai Key Laboratory of Diabetes Mellitus, Shanghai 200233, China
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Xiao S, Xiong Q, Zhou H, Zhang Y, Wang G, Zhang H, Zhao H. Oxoacetohydrazide-functionalized cellulose with enhanced adsorption performance. J Appl Polym Sci 2015. [DOI: 10.1002/app.42950] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Shiyong Xiao
- Key Laboratory of Materials Physics, Centre for Environmental and Energy Nanomaterials, Anhui Key Laboratory of Nanomaterials and Nanotechnology; Institute of Solid State Physics, Chinese Academy of Sciences; P.O. Box 1129 Hefei 230031 People's Republic of China
| | - Qizhong Xiong
- Key Laboratory of Materials Physics, Centre for Environmental and Energy Nanomaterials, Anhui Key Laboratory of Nanomaterials and Nanotechnology; Institute of Solid State Physics, Chinese Academy of Sciences; P.O. Box 1129 Hefei 230031 People's Republic of China
| | - Hongjian Zhou
- Key Laboratory of Materials Physics, Centre for Environmental and Energy Nanomaterials, Anhui Key Laboratory of Nanomaterials and Nanotechnology; Institute of Solid State Physics, Chinese Academy of Sciences; P.O. Box 1129 Hefei 230031 People's Republic of China
| | - Yunxia Zhang
- Key Laboratory of Materials Physics, Centre for Environmental and Energy Nanomaterials, Anhui Key Laboratory of Nanomaterials and Nanotechnology; Institute of Solid State Physics, Chinese Academy of Sciences; P.O. Box 1129 Hefei 230031 People's Republic of China
| | - Guozhong Wang
- Key Laboratory of Materials Physics, Centre for Environmental and Energy Nanomaterials, Anhui Key Laboratory of Nanomaterials and Nanotechnology; Institute of Solid State Physics, Chinese Academy of Sciences; P.O. Box 1129 Hefei 230031 People's Republic of China
| | - Haimin Zhang
- Key Laboratory of Materials Physics, Centre for Environmental and Energy Nanomaterials, Anhui Key Laboratory of Nanomaterials and Nanotechnology; Institute of Solid State Physics, Chinese Academy of Sciences; P.O. Box 1129 Hefei 230031 People's Republic of China
| | - Huijun Zhao
- Key Laboratory of Materials Physics, Centre for Environmental and Energy Nanomaterials, Anhui Key Laboratory of Nanomaterials and Nanotechnology; Institute of Solid State Physics, Chinese Academy of Sciences; P.O. Box 1129 Hefei 230031 People's Republic of China
- Centre for Clean Environment and Energy; Gold Coast Campus, Griffith University; Queensland 4222 Australia
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Xiao-Bo Y, Qiang L, Xiong Q, Zheng R, Jian Z, Jian-Hua Z, Qian-Jun Z. Efficacy of early postoperative enteral nutrition in supporting patients after esophagectomy. MINERVA CHIR 2014; 69:37-46. [PMID: 24504222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
AIM This study aims to investigate and evaluate the efficacy and safety of early enteral nutrition (EN) in maintaining and improving the postoperative nutritional status in patients undergoing esophagectomy. METHODS A randomized, controlled clinical trial was conducted in 120 adult patients with esophageal cancer and undergoing esophagectomy. Patients were randomly divided into two groups receiving either EN (N.=64) or parenteral nutrition (PN) (N.=56) postoperatively. The nutritional intake was isonitrogenic and isocalorie for both groups. Nutritional status was evaluated preoperatively as well as on postoperative day I and day 8. Daily nitrogen balance was measured and 7-day cumulative nitrogen balance was calculated. The levels of serum markers including d-lactate, diamine oxidase (DAO), and endotoxin were determined on 1st, 4th and 8th postoperative day for analyzing intestinal barrier function. Postoperative infection rate and the incidence of nutrition support-related complications were examined. RESULTS The concentrations of serum albumin and prealbumin in patients of EN group were significantly higher than those in PN group and the concentrations of blood glucose, γ-GT, AKP, TB, and DB were significantly lower compared to those in the PN group (P<0.05). Both daily nitrogen balance and cumulative nitrogen balance of EN group were better than those of PN group since postoperative day III. The serum levels of d-lactate, DAO, and endotoxin of EN group were significantly lower than those of PN group on postoperative day VIII (P<0.01). The incidence of postoperative infections in blood, lung, and intestinal tract in EN group was lower compared to PN group (P<0.05). No severe complications associated with nutritional support occurred in EN group. The time to flatus passage in EN group was significantly shorter, and the cost of nutritional support was significantly less compared to PN group (P<0.05). CONCLUSION Postoperative early enteral nutrition was safe and feasible for patients undergoing esophagectomy. Compared to PN, EN more efficiently ameliorated postoperational nutritional status of the patients undergoing esophagectomy, played an important role in restoring intestinal barrier function postoperatively, reduced the incidence of postoperative infection, and decreased the cost of hospital stay.
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Affiliation(s)
- Y Xiao-Bo
- Department of Thoracic Surgery of Shanghai Jiao Tong University Affiliated First People's Hospital, Shanghai, China -
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Xiong Q, Cao L, Hu J, Marian AJ, Hong K. A rare loss-of-function SCN5A variant is associated with lidocaine-induced ventricular fibrillation. Pharmacogenomics J 2014; 14:372-5. [PMID: 24445991 PMCID: PMC4105333 DOI: 10.1038/tpj.2013.50] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/22/2013] [Revised: 11/03/2013] [Accepted: 12/09/2013] [Indexed: 01/29/2023]
Abstract
The human genome contains over 4 million variant sites, as compared to the reference genome, including rare sequence variants, which have the potential to exert large phenotypic effects, such as susceptibility to drug toxicity. We report identification and functional characterization of a rare non-synonymous (p.A1427S) variant in the SCN5A gene that was associated with incessant and lethal ventricular tachycardia and fibrillation after administration of lidocaine to a patient with acute myocardial infarction. The variant, located in a highly conserved domain distinct from the predicted lidocaine binding site, decreased peak current density of the sodium channel. With the increasing availability of the whole exome and whole genome sequencing data, it would be possible to identify and characterize rare variants in SCN5A that might predispose to lethal ventricular arrhythmias.
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Affiliation(s)
- Q Xiong
- Cardiovascular Department, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - L Cao
- Cardiovascular Department, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - J Hu
- Cardiovascular Department, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - A J Marian
- 1] Center for Cardiovascular Genetics at The University of Texas Health Science Center-Houston and, Houston, TX, USA [2] Texas Heart Institute, Houston, TX, USA
| | - K Hong
- 1] Cardiovascular Department, The Second Affiliated Hospital of Nanchang University, Nanchang, China [2] The Key Laboratory of Molecular Medicine, The Second Affiliated Hospital of Nanchang University, Nanchang, China
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Zhou S, Yu P, Guan L, Xing A, Liu S, Xiong Q, Peng B. NOD1 expression elicited by iE-DAP in first trimester human trophoblast cells and its potential role in infection-associated inflammation. Eur J Obstet Gynecol Reprod Biol 2013; 170:318-23. [PMID: 24041848 DOI: 10.1016/j.ejogrb.2013.04.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2012] [Revised: 12/27/2012] [Accepted: 04/29/2013] [Indexed: 12/28/2022]
Abstract
OBJECTIVES The underlying mechanisms of protective immunity of placental trophoblast cells against bacterial infection remain largely unknown. NOD1 are intracellular pattern recognition receptors that are activated by bacterial peptides and mediate innate immunity. This study aimed to investigate the expression and function of NOD1 in first trimester trophoblast cells, and evaluate the potential role of trophoblast cells in infection-associated inflammation. STUDY DESIGN Human extravillous trophoblast cell line HTR8 cells were stimulated with various concentrations of iE-DAP for various periods of time. NOD1 expression was detected by immunofluorescence, and the changes in NOD1 and RICK mRNA and protein in H8 cells were determined by real-time polymerase chain reaction and Western blot analysis. The concentrations of interleukin (IL)-8 and IL-6 secreted by H8 cells were examined by enzyme-linked immunosorbent assay. NF-κB transcription activity and P65 expression were detected by electrophoretic mobility shift assay and Western blot analysis. RESULTS H8 cells expressed NOD1, and the effects of iE-DAP on NOD1 were dose- and time-dependent. The concentration of IL-8 increased gradually with increasing concentration of iE-DAP, and the levels of IL-8 and IL-6 were associated with the duration of exposure to iE-DAP. The dose of iE-DAP was significantly associated with expression of RICK and P65, and stimulation of H8 cells by iE-DAP altered NF-κB transcription activity. CONCLUSIONS NOD1 may have a role in mediating infection-associated inflammation. Once iE-DAP is recognized by NOD1, the inflammatory response may be induced via NOD1-RICK-NF-κB-mediated pathways.
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Affiliation(s)
- S Zhou
- Department of Obstetrics and Gynaecology, West China Second University Hospital, Sichuan University, Chengdu, China
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Xiong Q, Liu J, Lin X, Bao X. Synthesis and Fungicidal Activities of 2-Benzylsulfonyl-5-methyl- 1,2,4-triazolo[1,5- a]pyrimidine-7-oxoacetohydrazone Derivatives. CHINESE J ORG CHEM 2012. [DOI: 10.6023/cjoc1203162] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Xiong Q, Lin X, Liu J, Bi L, Bao X. Synthesis and Bioactivities of Novel 1,2,4-triazolo[1,5-a]Pyrimidine Derivatives Containing 1,2,4-triazole-5-thione Schiff Base Unit. CHINESE J ORG CHEM 2012. [DOI: 10.6023/cjoc1112231] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Gao Z, Lin L, Huang S, Xiong Q. Laparoscopic exploration diagnoses porocephalosis in children: 2 case reports and a review of the literature. Eur J Pediatr Surg 2011; 21:70-2. [PMID: 21053164 DOI: 10.1055/s-0030-1265138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Z Gao
- Zhejiang University Children's Hospital, Pediatric Surgery, Hangzhou, China
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Xiong Q, Chai J, Zhang PP, Wu J, Jiang SW, Zheng R, Deng CY. MyoD control of SKIP expression during pig skeletal muscle development. Mol Biol Rep 2010; 38:267-74. [PMID: 20336382 DOI: 10.1007/s11033-010-0104-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2009] [Accepted: 03/16/2010] [Indexed: 11/25/2022]
Abstract
Skeletal muscle and kidney enriched inositol phosphatase (SKIP) was identified as a 5'-inositol phosphatase that hydrolyzes PI(3,4,5)P3 to PI(3,4)P2 that negatively regulates insulin-induced phosphatidylinositol 3-kinase signaling in skeletal muscle. In this study, we obtained a 1575-bp mRNA sequence of porcine SKIP that included the full coding region encoding a protein of 450 amino acids. With the use of comparative mapping, we mapped this gene to SSC12 q1.3, where many QTLs affect Backfat thickness at 10th rib, carcass yield, the number of muscle fibers, and ham weight traits. As a candidate gene for growth and carcass traits, a novel single nucleotide polymorphism in exon 12 (G>A) was detected by PCR-RFLP. The results showed that the GG genotype had higher skin percentage (SP), carcass length to first spondyle (CL1), carcass length to first rib (CL2), but lower intramuscular fat (IMF) as compared with genotype AG (P<0.05), and allele G seemed to be associated with an increase in the growth trait. Porcine SKIP was expressed abundantly in skeletal muscle tissue and was transcriptionally upregulated during skeletal muscle differentiation. Analysis of the porcine SKIP promoter sequence demonstrated that MyoD was involved in regulating SKIP mRNA expression in myotubes, partly via the cis-acting elements in SKIP promoter. In summary, we suggested that SKIP might play a role in the regulation of skeletal muscle development in pigs.
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Affiliation(s)
- Q Xiong
- Agricultural Ministry Key Laboratory of Swine Breeding and Genetics & Key Laboratory of Agricultural Animal Genetics, Breeding, and Reproduction of Ministry of Education, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
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Chai J, Xiong Q, Zhang PP, Shang YY, Zheng R, Peng J, Jiang SW. Evidence for a new allele at the SERCA1 locus affecting pork meat quality in part through the imbalance of Ca2+ homeostasis. Mol Biol Rep 2010; 37:613-9. [PMID: 19821152 DOI: 10.1007/s11033-009-9872-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2009] [Accepted: 09/29/2009] [Indexed: 11/25/2022]
Abstract
Sarcoendoplasmic reticulum Ca2+-ATPase 1 (SERCA1) as a Ca2+ release channel plays a key role in the relaxation of skeletal muscle through pumping cytosolic Ca2+ into the SR (sarcoplasmic reticulum). In this study, a novel single nucleotide polymorphism (SNP) in exon 8 (C > T) was detected by tetra-primer ARMS-PCR and the tissue expression pattern of SERCA1 was analyzed in eleven tissues. A model of primary skeletal muscle cells in vitro exposed to dexamethasone (DEX, a synthetic corticosteroid) was also employed to determine whether stress hormones cause an increase in intracellular Ca2+ concentration that is associated with alteration in SERCA1 and in turn subsequently affect meat quality. The results showed that the CC genotype has lower content intramuscular fat and higher water than pig carrying the genotype CT and CC. In addition, the additive effects were both significantly (P < 0.05) and allele T seemed to be associate with increase in intramuscular fat, while decrease in water content. Accompanied with previous studies, the high abundance of porcine SERCA1 was found in skeletal muscle tissue. DEX markedly down-regulated the expression of SERCA1, leading to Ca2+ overload. Furthermore, the imbalance of Ca2+ homeostasis up-regulated the transcription level of Calpain1. Taken together, we demonstrated a novel mechanism that the changes in expression of SERCA1 potential disturb the normal Ca2+ channel as well as the balance of Ca2+ homeostasis and which in turn finally activated Ca2+-dependent proteases such as Calpain1 which could affect meat quality.
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Affiliation(s)
- J Chai
- Agricultural Ministry Key Laboratory of Swine Breeding and Genetics and Key Laboratory of Agricultural Animal Genetics, Breeding, and Reproduction of Ministry of Education, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China
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Chai J, Xiong Q, Zhang C, Miao W, Li F, Zheng R, Peng J, Jiang S. Effect of pre-slaughter transport plant on blood constituents and meat quality in halothane genotype of NN Large White×Landrace pigs. Livest Sci 2010. [DOI: 10.1016/j.livsci.2009.09.014] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Xiong Q, Qiu Y, Gu W. PGMapper: a web-based tool linking phenotype to genes. Bioinformatics 2008. [DOI: 10.1093/bioinformatics/btn124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Elbakri IA, Tesic MM, Xiong Q. Sci-Fri PM Imaging-04: Physical Characterization of a High-resolution 16-bit CCD Detector for Mammography. Med Phys 2006. [DOI: 10.1118/1.2244679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Xiong Q, Fan S, Guo X, Zhou X. Stachytarpheta leaf curl virus is a novel monopartite begomovirus species. Arch Virol 2005; 150:2257-70. [PMID: 15986176 DOI: 10.1007/s00705-005-0568-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2004] [Accepted: 04/28/2005] [Indexed: 10/25/2022]
Abstract
Begomovirus isolates were obtained from Stachytarpheta jamaicensis plants showing leaf curl and chlorosis symptoms collected in the Hainan province of China. The complete sequences of isolates Hn5-4, Hn6-1, Hn30 and Hn34 were determined to be 2748, 2751, 2748 and 2748 nucleotides long, respectively. The complete sequences of the four isolates share more than 94.9% nucleotide sequence identity, but all of them have less than 86% nucleotide sequence identity with other reported begomoviruses. The molecular data show that Hn5-4, Hn6-1, Hn30 and Hn34 are isolates of a distinct begomovirus species, for which the name Stachytarpheta leaf curl virus (StaLCV) is proposed. PCR and Southern blot analyses demonstrate that all the collected field samples are not associated with DNAbeta or DNA-B components. An infectious clone of StaLCV isolate Hn5-4 was constructed, and could efficiently infect Nicotiana benthamiana, N. tabacum Samsun, N. glutinosa, Lycopersicon esculentum and Petunia hybrida plants, inducing upward leaf roll and vein swelling symptoms. In addition, we illustrate that StaLCV can functionally interact with distinct DNAbeta molecules in plants.
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Affiliation(s)
- Q Xiong
- Institute of Biotechnology, Zhejiang University, Hangzhou, P.R. China
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Wang B, Shi Q, Abbruzzese JL, Xiong Q, Le X, Xie K. A novel, clinically relevant animal model of metastatic pancreatic adenocarcinoma biology and therapy. Int J Pancreatol 2002; 29:37-46. [PMID: 11558631 DOI: 10.1385/ijgc:29:1:37] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
In this study, we report a metastatic model of Panc02 murine pancreatic adenocarcinoma. Parental Panc02 cells were orthotopically implanted into the pancreas of syngeneic C57BL/6 mice. Tumor cells were isolated from liver micrometastases 90 d after tumor implantation and established as a culture (Panc02-H1). The Panc02-H1 cells were then implanted into the pancreas of mice. Liver metastases were then collected and established as Panc02-H2 cells. This process was repeated until the Panc02-H7 cell line was established. These cells were extremely aggressive after implantation as manifested by progressive growth in the pancreas, peritoneal dissemination, and distant metastasis to multiple organs, including the liver and lungs. Moreover, Panc02-H7 cells expressed the inducible nitric oxide synthase gene at a very low level in culture and produced highly vascularized tumors having a large number of infiltrating macrophages. Collectively, this model system should be a valuable tool for investigating the molecular mechanisms governing pancreatic cancer growth and metastasis and exploring potential treatment modalities for this disease.
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Affiliation(s)
- B Wang
- Department of Gastrointestinal Medical Oncology, The University of Texas M.D. Anderson Cancer Center, Houston 77030, USA
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Abstract
Pancreatic adenocarcinoma is a deadly disease. Its etiology is unknown, and metastatic disease kills the majority of patients who have it. Effective prevention is clearly the ultimate goal for eradicating this disease provided that the effects of environmental and genetic elements on pancreatic cancer development are fully understood. Currently, it appears that the control of pancreatic cancer metastasis is of immediate urgency. Fulfillment of this difficult task relies on knowledge of the cellular and molecular biology of metastasis. The use of relevant animal models will help define each aspect of this complicated process.
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Affiliation(s)
- K Xie
- Department of Gastrointestinal Medical Oncology, The University of Texas M.D. Anderson Cancer Center, Houston 77030, USA.
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Xiong Q, Lu C. [Detection of pathogenic Edwarsiella tarda]. Wei Sheng Wu Xue Bao 2001; 41:736-40. [PMID: 12552832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
25 Edwardsiella tarda(Et) strains had been detected both on their viruslent factor Excellular Product (ECP), including the hemolysin and extracellular protease (ECPase), and on their pathogenicity to mice and Xiphophorus helleri. ECP was detected by Dot-ELISA with rabbit antiserum against ECP of reference strain JEL4. The results showed that the animal pathogenicity of Et had good correlation with its hemolysin other than with ECPase. The agreement between Dot-ELISA of JEL4 ECP and pathogenicity to animal was up to 100%. It was desirable to establish a detecting method, which only need detect the ECP with plate assay (PA) and Dot-ELISA, but needn't have animal experiment. Furthermore it is possible to develop a diagnosis kit of application to simplify the detecting procedure of pathogenic Et.
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Affiliation(s)
- Q Xiong
- Key Lab of Animal Disease Diagnostic and Immunology, Nangjing Agricultural University, Nanjing 210095, China
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Xiong Q, Valero V, Kau V, Kau SW, Taylor S, Smith TL, Buzdar AU, Hortobagyi GN, Theriault RL. Female patients with breast carcinoma age 30 years and younger have a poor prognosis: the M.D. Anderson Cancer Center experience. Cancer 2001; 92:2523-8. [PMID: 11745185 DOI: 10.1002/1097-0142(20011115)92:10<2523::aid-cncr1603>3.0.co;2-6] [Citation(s) in RCA: 120] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
BACKGROUND The objective of this study was to analyze the outcome of treatment in young women with breast carcinoma who were treated at a single institution and to develop a clearer understanding of the natural history of the disease in these women. METHODS One hundred eighty-five women age < or = 30 years in whom a diagnosis of invasive breast carcinoma was made between October 1985 and September 1995 were identified in the Tumor Registry data base. Patient data were obtained by chart review. All female patients with breast carcinoma who were age > 30 years and who were identified in the same data base and received treatment during the same period served as the control population. The stage-stratified overall survival (OS) rate for the study patients was compared with the OS rate for both the control population and patients in the National Cancer Data Base (NCDB). RESULTS Of 185 patients, 11% presented with Stage I disease, 45% presented with Stage II disease, 38% presented with Stage III disease, and 6% presented with Stage IV disease. Twenty-nine percent of patients with Stage I disease received adjuvant therapy, and 84% of patients with Stage II disease and 96% of patients with Stage III disease received either adjuvant or neoadjuvant chemotherapy. Among patients with Stage I disease, 8 patients underwent mastectomy and 13 patients underwent breast-conserving surgery (BCS). Among patients with Stage II disease, 66 patients underwent mastectomy and 17 patients underwent BCS. Among patients with Stage III disease, 65 patients underwent mastectomy and 5 patients underwent BCS. The 5-year OS rate was 87% for patients with Stage I disease, 60% for patients with Stage II disease, 42% for patients with Stage III disease, and 16% for patients with Stage IV disease. Compared with the control patients and those in the NCDB, there was a trend toward worse OS rates in women age < or = 30 years. CONCLUSIONS Women who are diagnosed with breast carcinoma at an age < or = 30 years appear to have a poorer prognosis compared with that for their older counterparts.
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Affiliation(s)
- Q Xiong
- Division of Cancer Medicine; University of Texas M. D. Anderson Cancer Center; Houston, Texas 77030, USA
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Xiong Q, Geng X, Sheungtat F. [Cox proportional risk model analysis on the affecting factors of liver transplantation]. Zhonghua Wai Ke Za Zhi 2001; 39:861-3. [PMID: 11930743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Abstract
OBJECTIVE To analyze the relative factors affecting the survival time of liver transplantation and identify the main factors for the purpose of supply the reference evidence to the clinic. METHODS The clinical data on preoperative condition, interoperation and liver function in 116 out of 128 recipients were quantified by the cox proportional risk model after liver transplantation. Their variables were calculated and analyzed by cox regression under the SAS 6.12 software. RESULTS Z14 (FFP) was obvious at alpha = 0.05. After deleting the non-obvious factors from the model, regression coefficient, standard errors, wald, P and RR were 0.065, 0.024, 7.493, 0.006 and 1.067 respectively. There was no difference of survival time between living liver transplantation and cadaver liver transplantation. The relative dangerous degree in cadaver liver transplantation was 0.340 as much as that in living liver transplantation. CONCLUSIONS Living liver transplantation shortens the waiting time of liver transplantation and alleviates patient's suffering. It suits for children and adult and supports a selective liver transplantation.
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Affiliation(s)
- Q Xiong
- Department of Surgery, Anhui Medical University, Hefei 230022, China
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Wang B, Xiong Q, Shi Q, Le X, Xie K. Genetic disruption of host interferon-gamma drastically enhances the metastasis of pancreatic adenocarcinoma through impaired expression of inducible nitric oxide synthase. Oncogene 2001; 20:6930-7. [PMID: 11687972 DOI: 10.1038/sj.onc.1204871] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2001] [Revised: 07/26/2001] [Accepted: 08/01/2001] [Indexed: 12/06/2022]
Abstract
Synergistic induction of the inducible nitric oxide synthase (NOS II) gene requires a combination of interferon-gamma (IFN-gamma) and lipopolysaccharide (LPS). In this study, we determined whether the induction of IFN-gamma was required for NOS II-mediated antitumor activity in vivo. Highly metastatic H7 murine pancreatic adenocarcinoma cells were implanted into the subcutis, footpad, and pancreas of syngeneic IFN-gamma(+/+) and IFN-gamma(-/-) mice. These cells grew and produced metastases and ascites in IFN-gamma(+/+) mice. In sharp contrast, the same tumor cells grew much more aggressively, metastasized more extensively, and produced a larger amount of malignant ascites in IFN-gamma(-/-) mice. Also, induction of IFN-gamma correlated with NOS II gene expression and NO production in IFN-gamma(+/+) injected with the tumor cells but not in IFN-gamma(-/-) mice or IFN-gamma(+/+) mice without tumor challenge. In vitro, only LPS plus IFN-gamma induced a high level of NO production and cytotoxicity against H7 cells. These data suggested that the tumor cells stimulated IFN-gamma secretion from host cells, which in turn stimulated NO production by host cells and suppressed tumor growth and metastasis.
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Affiliation(s)
- B Wang
- Department of Gastrointestinal Medical Oncology, The University of Texas M. D. Anderson Cancer Center, Houston, Texas,TX 77030, USA
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Tezuka Y, Irikawa S, Kaneko T, Banskota AH, Nagaoka T, Xiong Q, Hase K, Kadota S. Screening of Chinese herbal drug extracts for inhibitory activity on nitric oxide production and identification of an active compound of Zanthoxylum bungeanum. J Ethnopharmacol 2001; 77:209-217. [PMID: 11535366 DOI: 10.1016/s0378-8741(01)00300-2] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Sixty-eight water and methanol extracts from 34 Chinese herbal drugs, most of which are used for inflammatory diseases, were screened for their inhibitory effects on nitric oxide (NO) production in lipopolysaccharide (LPS)-stimulated J774.1 macrophages and in LPS/interferon (IFN)-gamma-stimulated mouse peritoneal exudate macrophages. Among the extracts, methanol extracts of Myristica fragrans, Plantago asiatica, Rubia cordifolia, and Zanthoxylum bungeanum showed significant inhibition in J774.1 macrophages, while in mouse peritoneal exudate macrophages, water extracts of Ru. cordifolia and Scutellaria baicalensis and methanol extracts of Angelica megaphylla, My. fragrans, and Z. bungeanum inhibited the NO production. Among them, inhibition of water extract of Sc. baicalensis was found to be mainly due to direct scavenging of NO radicals, through an examination of its scavenging activity on PAPA NONOate-generated NO radicals, while water extract of Ru. cordifolia and methanol extracts of An. megaphylla, My. fragrans, P. asiatica, and Z. bungeanum showed inhibition on iNOS mRNA expression. At last, an inhibitory compound on iNOS mRNA expression was isolated from a methanol extract of Z. bungeanum and identified as 4-O-beta-D-glucopyranosyldihydroferulic acid by NMR spectral analyses and chemical synthesis.
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Affiliation(s)
- Y Tezuka
- Institute of Natural Medicine, Toyama Medical and Pharmaceutical University, 2630-Sugitani, Toyama 930-0194, Japan
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50
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Abstract
Tumor and host cells frequently express interleukin-8 (IL-8). IL-8 has been shown to be motogenic, mitogenic, and angiogenic and to play important roles in human tumor progression. IL-8 expression can be induced by numerous stress factors present in the tumor environment, such as hypoxia, acidosis, hyperglycemia, hyperosmotic pressure, high cell density, hyperthermia, radiation, and chemotherapeutic agents. Understanding the mechanisms of IL-8 expression and regulation will be helpful in designing potential therapeutic modalities targeting IL-8 to control tumor growth and metastasis.
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Affiliation(s)
- Q Shi
- Department of Gastrointestinal Medical Oncology, The University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX 77030, USA
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