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Meng Z, Guo Y, Deng S, Xiang Q, Cao J, Zhang Y, Zhang K, Ma K, Xie S, Kang Z. Improving image quality of triple-low-protocol renal artery CT angiography with deep-learning image reconstruction: a comparative study with standard-dose single-energy and dual-energy CT with adaptive statistical iterative reconstruction. Clin Radiol 2024; 79:e651-e658. [PMID: 38433041 DOI: 10.1016/j.crad.2024.01.008] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 01/03/2024] [Accepted: 01/09/2024] [Indexed: 03/05/2024]
Abstract
AIM To investigate the improvement in image quality of triple-low-protocol (low radiation, low contrast medium dose, low injection speed) renal artery computed tomography (CT) angiography (RACTA) using deep-learning image reconstruction (DLIR), in comparison with standard-dose single- and dual-energy CT (DECT) using adaptive statistical iterative reconstruction-Veo (ASIR-V) algorithm. MATERIALS AND METHODS Ninety patients for RACTA were divided into different groups: standard-dose single-energy CT (S group) using ASIR-V at 60% strength (60%ASIR-V), DECT (DE group) with 60%ASIR-V including virtual monochromatic images at 40 keV (DE40 group) and 70 keV (DE70 group), and the triple-low protocol single-energy CT (L group) with DLIR at high level (DLIR-H). The effective dose (ED), contrast medium dose, injection speed, standard deviation (SD), signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR) of abdominal aorta (AA), and left/right renal artery (LRA, RRA), and subjective scores were compared among the different groups. RESULTS The L group significantly reduced ED by 37.6% and 31.2%, contrast medium dose by 33.9% and 30.5%, and injection speed by 30% and 30%, respectively, compared to the S and DE groups. The L group had the lowest SD values for all arteries compared to the other groups (p<0.001). The SNR of RRA and LRA in the L group, and the CNR of all arteries in the DE40 group had highest value compared to others (p<0.05). The L group had the best comprehensive score with good consistency (p<0.05). CONCLUSIONS The triple-low protocol RACTA with DLIR-H significantly reduces the ED, contrast medium doses, and injection speed, while providing good comprehensive image quality.
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Affiliation(s)
- Z Meng
- Department of Radiology, The Third Affiliated Hospital of Sun Yat-sen University, Tianhe District, Tianhe Road, 600, Guangzhou, 510620, China
| | - Y Guo
- Department of Radiology, The Third Affiliated Hospital of Sun Yat-sen University, Tianhe District, Tianhe Road, 600, Guangzhou, 510620, China
| | - S Deng
- Department of Radiology, The Third Affiliated Hospital of Sun Yat-sen University, Tianhe District, Tianhe Road, 600, Guangzhou, 510620, China
| | - Q Xiang
- Department of Radiology, The Third Affiliated Hospital of Sun Yat-sen University, Tianhe District, Tianhe Road, 600, Guangzhou, 510620, China
| | - J Cao
- Department of Radiology, The Third Affiliated Hospital of Sun Yat-sen University, Tianhe District, Tianhe Road, 600, Guangzhou, 510620, China
| | - Y Zhang
- Department of Radiology, The Third Affiliated Hospital of Sun Yat-sen University, Tianhe District, Tianhe Road, 600, Guangzhou, 510620, China
| | - K Zhang
- Department of Radiology, The Third Affiliated Hospital of Sun Yat-sen University, Tianhe District, Tianhe Road, 600, Guangzhou, 510620, China
| | - K Ma
- CT Imaging Research Center, GE HealthCare China, Tianhe District, Huacheng Road 87, Guangzhou, 510623, China
| | - S Xie
- Department of Radiology, The Third Affiliated Hospital of Sun Yat-sen University, Tianhe District, Tianhe Road, 600, Guangzhou, 510620, China.
| | - Z Kang
- Department of Radiology, The Third Affiliated Hospital of Sun Yat-sen University, Tianhe District, Tianhe Road, 600, Guangzhou, 510620, China.
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Kang Z, Wang T, Han X, Wang C, Zhang S, Yu H. Whole genome sequencing revealed the capability of Paenarthrobacter sp. KN0901 to simultaneously remove atrazine and corn straw at low temperatures: From gene identification to empirical validation. J Hazard Mater 2024; 471:134251. [PMID: 38640669 DOI: 10.1016/j.jhazmat.2024.134251] [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] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Revised: 04/02/2024] [Accepted: 04/08/2024] [Indexed: 04/21/2024]
Abstract
Corn planting is often associated with serious atrazine pollution and excessive corn straw amounts, causing severe threats to environmental and ecological security, as well as to green agricultural development. In this context, a Paenarthrobacter sp. KN0901 strain was applied to simultaneously remove atrazine and straw at low temperatures. The results of whole genome sequencing indicated that KN0901 encoded over nine straw biodegradation-related enzymes. In addition, 100 % and 27.3 % of atrazine and straw were simultaneously degraded by KN0901 following an incubation period of seven days at 15 ºC and 180 rpm in darkness. The KN0901 strain maintained high atrazine and straw biodegradation rates under temperature and pH ranges of 4-25 ºC and 5-9, respectively. The simultaneous atrazine and corn straw additions improved the microbial growth and biodegradation rates by increasing the functional gene expression level, cell viability, inner membrane permeability, and extracellular polymeric substance contents of KN0901. The hydroponic experiment results demonstrated the capability of the KN0901 strain to mitigate the toxicity of atrazine to soybeans in four days under the presence of corn straw. The present study provides a new perspective on the development of bioremediation approaches and their application to restore atrazine-polluted cornfields with large straw quantities, particularly in cold areas.
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Affiliation(s)
- Zhichao Kang
- State Key Laboratory of Black Soils Conservation and Utilization, Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China; College of Resources and Environment, University of Chinese Academy of Science, Beijing 101400, China
| | - Tianye Wang
- State Key Laboratory of Black Soils Conservation and Utilization, Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China
| | - Xuerong Han
- Engineering Research Center of Chinese Ministry of Education for Edible and Medicinal Fungi, Jilin Agricultural University, Changchun 130118, China
| | - Chenxu Wang
- Institutional Center for Shared Technologies and Facilities of Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China
| | - Shaoqing Zhang
- Institutional Center for Shared Technologies and Facilities of Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China
| | - Hongwen Yu
- State Key Laboratory of Black Soils Conservation and Utilization, Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China.
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Yang Y, Kang Z, Wang J, Xu G, Yu Y. Simultaneous achievement of removing bensulfuron-methyl and reducing CO 2 emission in paddy soil by Acinetobacter YH0317 immobilized boron-doping biochar. J Hazard Mater 2024; 467:133758. [PMID: 38350318 DOI: 10.1016/j.jhazmat.2024.133758] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 01/22/2024] [Accepted: 02/07/2024] [Indexed: 02/15/2024]
Abstract
Herbicide residue and greenhouse gas (GHG) emission are two main problems in the paddy rice field, which have barely been considered simultaneously. Herein, a bensulfuron-methyl (BSM)-degrading bacterium named Acinetobacter YH0317 was successfully immobilized on two kinds of biochars and subsequently applied in the paddy soil. The BSM removal rate of Acinetobacter YH0317 immobilized boron-doping biochar (BBC) was 80.42% after 30 d, which was significantly higher than that of BBC (39.05%) and Acinetobacter YH0317 (49.10%) applied alone. BBC acting as an immobilized carrier could enable Acinetobacter YH0317 to work in harsh and complex environment and thus improve the BSM removal efficiency. The addition of Acinetobacter YH0317 immobilized BBC (TP5) significantly improved the soil physicochemical properties (pH, SOC, and NH4+-N) and increased the diversity of soil microbial community compared to control group (CG). Meanwhile, Acinetobacter YH0317 immobilized BBC reduced the CO2-equivalent emission by 41.0%. Metagenomic sequencing results revealed that the decreasing CO2 emission in TP5 was correlated with carbon fixation gene (fhs), indicating that fhs gene may play an important role in reducing CO2 emission. The work presents a practical and supportive technique for the simultaneous achievement on the soil purification and GHG emission reduction in paddy soil.
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Affiliation(s)
- Yang Yang
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhichao Kang
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jian Wang
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China
| | - Guanghui Xu
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China
| | - Yong Yu
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China.
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Liu Y, Kang Z, Wang Q, Wang T, Song N, Yu H. One-step synthesis of ferrous disulfide and iron nitride modified hydrochar for enhanced adsorption and reduction of hexavalent chromium in Bacillus LD513 by promoting electron transfer and microbial metabolism. Bioresour Technol 2024; 396:130415. [PMID: 38316228 DOI: 10.1016/j.biortech.2024.130415] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2023] [Revised: 01/30/2024] [Accepted: 01/31/2024] [Indexed: 02/07/2024]
Abstract
Microbial immobilization technology is effective in improving bioremediation efficiency and heavy metal pollution. Herein, Bacillus LD513 with hexavalent chromium (Cr(VI)) tolerance was isolated and immobilized on a novel ferrous disulfide (FeS2)/iron nitride (FeN) modified hydrochar (Fe3-SNHC) prepared from waste straws. The prepared Fe3-SNHC-based LD513 (FeLD) significantly improves Cr(VI) adsorption and reduction by 31.4 % and 15.7 %, respectively, compared to LD513 alone. Furthermore, the FeLD composite system demonstrates efficient Cr(VI) removal efficiency and good environmental adaptability under different culture conditions. Microbial metabolism and electrochemical analysis indicate that Fe3-SNHC is an ideal carrier for protecting LD513 activity, promoting extracellular polymer secretion, and reducing oxidative stress. Additionally, the carrier serves as an electron shuttle that accelerates electron transfer and promotes Cr(VI) reduction. Overall, FeLD is an environmentally friendly biocomposite that shows good promise for reducing Cr(VI) contamination in wastewater treatment.
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Affiliation(s)
- Yuxin Liu
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Zhichao Kang
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Quanying Wang
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, PR China
| | - Tianye Wang
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, PR China
| | - Ningning Song
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, PR China
| | - Hongwen Yu
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, PR China.
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Qiu G, Wang Q, Wang Q, Wang T, Kang Z, Zeng Y, Yang X, Song N, Zhang S, Han X, Yu H. Effects of polyethylene microplastics on properties, enzyme activities, and the succession of microbial community in Mollisol: At the aggregate level. Environ Res 2023; 237:116976. [PMID: 37625535 DOI: 10.1016/j.envres.2023.116976] [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] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 07/12/2023] [Accepted: 08/22/2023] [Indexed: 08/27/2023]
Abstract
Soil, as a heterogeneous body, is composed of different-sized aggregates. There is limited data available on the potential role of microplastics (MPs) in microbial properties at the soil aggregate level. In this study, changes in microbial construction and diversity in farmland bulk soil and aggregates induced by polyethylene MPs (PE-MPs) were investigated at a dose of 0.5% (w/w) through 16s rDNA sequencing and enzyme activity measurements of different particle size aggregates in incubated soil. The presence of low-dose PE-MPs increased the proportion of >1 mm soil aggregates fraction, and decreased soil available nitrogen and available phosphorus in bulk soils. Furthermore, low-dose PE-MPs increased bacterial richness and diversity in 1-0.5 and < 0.25 mm fractions and decreased operational taxonomic unit, abundance-based coverage estimator, and Chao1 indices in bulk soil and >1 mm fractions. The levels of predicted functional genes taking part in the biodegradation and metabolism of exogenous substances also increased. At the phylum level, PE-MPs changed the proportion of Proteobacteria and Actinobacteria. The variations in soil aggregate properties were significantly correlated with the bacterial communities' composition and diversity. This study deepens our perception of the soil microenvironment, microbial community composition, and diversity in response to PE-MPs.
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Affiliation(s)
- Guankai Qiu
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Qirong Wang
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, China
| | - Quanying Wang
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, China
| | - Tianye Wang
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, China
| | - Zhichao Kang
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Ying Zeng
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, China
| | - Xiutao Yang
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, China
| | - Ningning Song
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, China
| | - Shaoqing Zhang
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, China
| | - Xuerong Han
- Engineering Research Center of Chinese Ministry of Education for Edible and Medicinal Fungi, Jilin Agricultural University, Changchun, 130118, China.
| | - Hongwen Yu
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, China.
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Zhao Y, Wei Y, Fan L, Nie Y, Li J, Zeng R, Li J, Zhan X, Lei L, Kang Z, Li J, Zhang W, Yang Z. Leveraging a disulfidptosis-related signature to predict the prognosis and immunotherapy effectiveness of cutaneous melanoma based on machine learning. Mol Med 2023; 29:145. [PMID: 37884883 PMCID: PMC10601311 DOI: 10.1186/s10020-023-00739-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 10/13/2023] [Indexed: 10/28/2023] Open
Abstract
BACKGROUND Disulfidptosis is a recently discovered programmed cell death pathway. However, the exact molecular mechanism of disulfidptosis in cutaneous melanoma remains unclear. METHODS In this study, clustering analysis was performed using data from public databases to construct a prognostic model, which was subsequently externally validated. The biological functions of the model genes were then investigated through various experimental techniques, including qRT-PCR, Western blotting, CCK-8 assay, wound healing assay, and Transwell assay. RESULTS We constructed a signature using cutaneous melanoma (CM) data, which accurately predicts the overall survival (OS) of patients. The predictive value of this signature for prognosis and immune therapy response was validated using multiple external datasets. High-risk CM subgroups may exhibit decreased survival rates, alterations in the tumor microenvironment (TME), and increased tumor mutation burden. We initially verified the expression levels of five optimum disulfidptosis-related genes (ODRGs) in normal tissues and CM. The expression levels of these genes were further confirmed in HaCaT cells and three melanoma cell lines using qPCR and protein blotting analysis. HLA-DQA1 emerged as the gene with the highest regression coefficient in our risk model, highlighting its role in CM. Mechanistically, HLA-DQA1 demonstrated the ability to suppress CM cell growth, proliferation, and migration. CONCLUSION In this study, a novel signature related to disulfidptosis was constructed, which accurately predicts the survival rate and treatment sensitivity of CM patients. Additionally, HLA-DQA1 is expected to be a feasible therapeutic target for effective clinical treatment of CM.
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Affiliation(s)
- Yi Zhao
- Tumor Research and Therapy Center, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Yanjun Wei
- Department of Radiation Oncology, Weifang People's Hospital, Weifang, China
| | - Lingjia Fan
- Department of Orthopaedic Surgery, Taian Central Hospital, Taian, Shandong, China
| | - Yuanliu Nie
- Tumor Research and Therapy Center, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Jianan Li
- Tumor Research and Therapy Center, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Renya Zeng
- Tumor Research and Therapy Center, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Jixian Li
- Tumor Research and Therapy Center, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Xiang Zhan
- Tumor Research and Therapy Center, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Lingli Lei
- Tumor Research and Therapy Center, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Zhichao Kang
- Tumor Research and Therapy Center, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Jiaxin Li
- Tumor Research and Therapy Center, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Wentao Zhang
- Tumor Research and Therapy Center, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China.
| | - Zhe Yang
- Tumor Research and Therapy Center, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China.
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Yang Y, Kang Z, Wang J, Xu G, Yu Y. Enhanced removal efficiency of bensulfuron-methyl by a novel boron doping biochar-based Acinetobacter YH0317 at a lower temperature. Bioresour Technol 2023; 386:129570. [PMID: 37506925 DOI: 10.1016/j.biortech.2023.129570] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 07/17/2023] [Accepted: 07/25/2023] [Indexed: 07/30/2023]
Abstract
Biochar-based bacteria are regarded as an efficient strategy for remediating organic pollutants in aquatic environments. Herein, a strain named Acinetobacter YH0317 that could degrade bensulfuron-methyl (BSM) at a lower temperature (15 °C) was isolated from a paddy rice field with long-term BSM application. Then Acinetobacter YH0317 was loaded on unmodified biochar (BC) and boron doping biochar (BBC). Results showed that BBC-based YH0317 significantly enhanced the removal efficiency of BSM (71.8-99.1%) compared with BC-based YH0317 (41.9-44.0%) and YH0317 alone (18.1-20.7%) in 24 h. BBC promoted the growth of YH0317 and secretion of extracellular secretions by providing a carrier and shelter for YH0317. The electrochemical analysis suggested BBC improved the electron transfer rate, which ultimately facilitated the removal of BSM. Hydroponic experiments indicated that BBC-based YH0317 effectively improved the growth of soybean. This work reports a novel BBC-based Acinetobacter YH0317 that could effectively remediate BSM contamination in the water environment.
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Affiliation(s)
- Yang Yang
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhichao Kang
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jian Wang
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China
| | - Guanghui Xu
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China
| | - Yong Yu
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China.
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Kang Z, Yang Y, Wang C, Kang Y, Wang T, Zhu G, Han X, Yu H. Atrazine decontamination by a newly screened psychrotroph Paenarthrobacter sp. KN0901 in an aquatic system: Metabolic pathway, kinetics, and hydroponics experiment. J Hazard Mater 2023; 457:131764. [PMID: 37320906 DOI: 10.1016/j.jhazmat.2023.131764] [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] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 05/19/2023] [Accepted: 06/02/2023] [Indexed: 06/17/2023]
Abstract
Atrazine residues running off the fields and entering water resources are a major threat to food security and the ecosystem. In this study, a psychrotrophic functional strain named KN0901 to remove atrazine residues was screened. KN0901 could degrade 30 mg·L-1 atrazine in 4 days at 15ºC with 105 CFU·mL-1 incubation. The phylogenetic results showed KN0901 belonged to Paenarthrobacter sp. PCR results showed that the functional genes consist of trzN, atzB, and atzC, suggesting atrazine was transformed to cyanuric acid by KN0901. KN0901 could degrade atrazine without adding exogenous carbon and nitrogen sources. What's more, KN0901 could tolerate extreme low temperature (5ºC) and high atrazine concentration (100 mg·L-1). When growth and degradation curves were compared, the results indicated the length of lag time showed significant correlation to atrazine degradation rate. The hydroponic experiments showed that the toxicity of atrazine was significantly reduced with KN0901 treatment. The study provided an effective, economic, and eco-friendly bioremediation measure to address atrazine contamination.
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Affiliation(s)
- Zhichao Kang
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China; College of Resources and Environment, University of Chinese Academy of Science, Beijing 101400, China
| | - Yang Yang
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China; College of Resources and Environment, University of Chinese Academy of Science, Beijing 101400, China
| | - Chenxu Wang
- Public Technical Service Center, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China
| | - Yuanyuan Kang
- Shenzhen CAPCHEM Technology Co. Ltd., Shabo Tongfuyu Industry Zone, Pingshan New District, Shenzhen 518118, China
| | - Tianye Wang
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China
| | - Guopeng Zhu
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China; College of Resources and Environment, University of Chinese Academy of Science, Beijing 101400, China
| | - Xuerong Han
- Engineering Research Center of Chinese Ministry of Education for Edible and Medicinal Fungi, Jilin Agricultural University, Changchun 130118, China
| | - Hongwen Yu
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China.
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Yang Y, Kang Z, Xu G, Yu Y. Enhanced adsorption performance of bensulfuron methyl with B doping biochar: Mechanism and density functional theory calculations. Bioresour Technol 2023; 372:128657. [PMID: 36690217 DOI: 10.1016/j.biortech.2023.128657] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 01/16/2023] [Accepted: 01/18/2023] [Indexed: 06/17/2023]
Abstract
It is an urgent task to develop suitable adsorbents for the control of herbicide-bensulfuron methyl (BSM) in the paddy rice fields at cold regions. Herein, B doping biochar was synthesized via one-step method. Results showed that the adsorption capacity for BSM on 1.0BBC was significantly superior to BC at 15 °C. Besides, low temperature resistance, wide pH adaptability, stable adsorption performance and reusability test suggested that 1.0BBC have potential practical application. The mechanisms of BSM removal by 1.0BBC were mainly attributed to pore filling and π-π electron donor-acceptor (EDA) interaction. Theoretical calculations revealed that BCO2 could enhance the adsorption capacity by π-π EDA between BSM and adsorbent. Meanwhile, hydroponic experiment demonstrated that the toxicity to soybean after adsorption of BSM by 1.0BBC was within the safe range. This study proves that 1.0BBC is an easy-to-prepare adsorbent with promising application in BSM removal in the rice paddy fields at lower temperature.
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Affiliation(s)
- Yang Yang
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhichao Kang
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Guanghui Xu
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China
| | - Yong Yu
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China.
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10
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Li W, Kang Z, Li S, Lin Y, Li Y, Mao Y, Zhang J, Lei T, Wang H, Su Y, Yang Y, Qiu J. 302P A multicenter, open-label, dose-escalation (DE), first-in-human study of VEGFRs and CSF1R inhibitor SYHA1813 in patients (pts) with recurrent high-grade gliomas (HGG) or advanced solid tumors. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.436] [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: 11/16/2022] Open
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11
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Chen ZP, Wu XF, Zheng BW, Chen QL, Yuan T, Zheng R, Chen JY, Kong WF, Wu S, Kang Z, Ren J, Yang QT. [Application of locating supratrochlear artery and supraorbital artery in combined transfrontal and intranasal endoscopic approaches]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2022; 57:931-936. [PMID: 36058658 DOI: 10.3760/cma.j.cn115330-20210805-00526] [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: 06/15/2023]
Abstract
Objective: To investigate the localization methods of supratrochlear artery (STA) and supraorbital artery (SOA), and to explore the clinical benefit of locating nerve via accompanying vascular localization in combined transfrontal and intranasal endoscopic approaches. Methods: From June 2019 to May 2021, 14 patients, including 11 males and 3 females, aging from 18 to 69 years old, were underwent frontal sinus surgery through the combined transfrontal and intranasal endoscopic approaches in the Department of Otorhinolaryngology Head and Neck Surgery of the Third Affiliated Hospital of Sun Yat-sen University. Before the surgery, localization of STA and SOA was determined by color doppler flow imaging (CDFI), computerized topographic angiography (CTA) and contrast enhanced magnetic resonance angiography (CE-MRA) respectively, and the distances between STA and SOA from facial midline were measured on 28 eyebrows. The position of external incision was determined according to the preoperative localization of STA and SOA. The examination time, cost and postoperative complications of the three methods were recorded. The accuracy of localization at 14 sides was verified by the surgery. GraphPad Prism 8.3 software was used for statistical analysis. Results: STA and SOA could be located by CDFI, CTA and CE-MRA. There was no significant difference in the measurement of the distance between STA and SOA from the facial midline among 3 methods (all P>0.05). Determining the position of external incision according to the localization of STA and SOA could protect both the blood vessels and accompanying nerves. No postoperative complications such as numbness of the forehead skin occurred. The measurement time of CDFI, CTA and CE-MRA was 22.50 (15.75, 30.00), 30.00 (28.00, 34.25) and 48.00 (44.00, 52.75) min (M (Q1, Q3)), respectively (all P<0.05). CDFI incurred the lowest costs and took the shortest time. Conclusions: CDFI is an efficient and economic localization method. The localization of STA and SOA facilitates the precise selection of the position of external incision, protects the accompanying nerve and reduces postoperative complications.
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Affiliation(s)
- Z P Chen
- Department of Ophthalmology and Otorhinolaryngology, the Second People's Hospital of Longgang District, Shenzhen 518112, China
| | - X F Wu
- Department of Otorhinolaryngology Head and Neck Surgery, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - B W Zheng
- Department of Ultrasonography, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - Q L Chen
- Department of Radiology, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - T Yuan
- Department of Otorhinolaryngology Head and Neck Surgery, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - R Zheng
- Department of Otorhinolaryngology Head and Neck Surgery, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - J Y Chen
- Department of Otorhinolaryngology Head and Neck Surgery, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - W F Kong
- Department of Otorhinolaryngology Head and Neck Surgery, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - S Wu
- Department of Otorhinolaryngology Head and Neck Surgery, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - Z Kang
- Department of Radiology, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - J Ren
- Department of Ultrasonography, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - Q T Yang
- Department of Otorhinolaryngology Head and Neck Surgery, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
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12
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He SL, Li SJ, Liu M, Ouyang WX, Chen WJ, Zheng X, Jiang T, Tan YF, Kang Z, Qin XM, Yu Y. [Study on the diagnostic value of transient elastography, APRI and FIB-4 for liver fibrosis in children with non-alcoholic fatty liver disease]. Zhonghua Gan Zang Bing Za Zhi 2022; 30:81-86. [PMID: 35152674 DOI: 10.3760/cma.j.cn501113-20210105-00007] [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] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Objective: To evaluate the diagnostic value of transient elastography, aspartate aminotransferase-to-platelet ratio index (APRI), and fibrosis index based on 4 factors (FIB-4) for liver fibrosis in children with non-alcoholic fatty liver disease (NAFLD). Methods: A retrospective study was conducted on 100 cases of nonalcoholic fatty liver disease in Hunan Children's Hospital between August 2015 to October 2020 to collect liver tissue pathological and clinical data. The receiver operating characteristic curve (ROC curve) was used to analyze the diagnostic value of liver stiffness measurement (LSM), APRI and FIB-4 in the diagnosis of different stages of liver fibrosis caused by NAFLD in children. Results: The area under the ROC curve (AUC) value of LSM, APRI and FIB-4 for diagnosing liver fibrosis (S≥1) were 0.701 [95% confidence interval (CI): 0.579 ~ 0.822, P = 0.011], 0.606 (95%CI: 0.436 ~ 0.775, P = 0.182), and 0.568 (95%CI: 0.397 ~ 0.740, P = 0.387), respectively. The best cut-off values were 6.65 kPa, 21.20, and 0.18, respectively. The AUCs value of LSM, APRI, and FIB-4 for diagnosing significant liver fibrosis (S≥ 2) were 0.660 (95% CI: 0.552 ~ 0.768, P = 0.006), 0.578 (95% CI: 0.464 ~ 0.691, P = 0.182) and 0.541 (95% CI: 0.427 ~ 0.655, P = 0.482), respectively. The best cut-off values were 7.35kpa, 24.78 and 0.22, respectively. The AUCs value of LSM, APRI and FIB-4 for the diagnosis of advanced liver fibrosis (S≥ 3) were 0.639 (95% CI: 0.446 ~ 0.832, P = 0.134), 0.613 (95% CI: 0.447 ~ 0.779, P = 0.223) and 0.587 (95% CI: 0.411 ~ 0.764, P = 0.346), respectively. The best cut-off values were 8.55kpa, 26.66 and 0.27, respectively. Conclusion: The transient elastography technique has a better diagnostic value than APRI and FIB-4 for liver fibrosis in children with NAFLD.
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Affiliation(s)
- S L He
- Liver Disease Center of Hunan Children's Hospital, Changsha 410000, China
| | - S J Li
- Liver Disease Center of Hunan Children's Hospital, Changsha 410000, China
| | - M Liu
- Liver Disease Center of Hunan Children's Hospital, Changsha 410000, China
| | - W X Ouyang
- Liver Disease Center of Hunan Children's Hospital, Changsha 410000, China
| | - W J Chen
- Liver Disease Center of Hunan Children's Hospital, Changsha 410000, China
| | - X Zheng
- Liver Disease Center of Hunan Children's Hospital, Changsha 410000, China
| | - T Jiang
- Liver Disease Center of Hunan Children's Hospital, Changsha 410000, China
| | - Y F Tan
- Liver Disease Center of Hunan Children's Hospital, Changsha 410000, China
| | - Z Kang
- Liver Disease Center of Hunan Children's Hospital, Changsha 410000, China
| | - X M Qin
- Liver Disease Center of Hunan Children's Hospital, Changsha 410000, China
| | - Y Yu
- Liver Disease Center of Hunan Children's Hospital, Changsha 410000, China
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Yu D, Wang Q, Fang Y, Kang Z, Liu L, He J, Han X, Yu H, Dong S. Study on simplified strategies for procedure of rapid detection of water toxicity. Talanta 2021; 235:122787. [PMID: 34517645 DOI: 10.1016/j.talanta.2021.122787] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 07/10/2021] [Accepted: 08/03/2021] [Indexed: 11/15/2022]
Abstract
In this work, a simplified procedure of detection of water toxicity based on Pt ultramicroelectrode (UME) and mixed microorganism cultured without sterilization was the first proposed. A stable Pt UME was successfully prepared with a special glass tube as insulation and support material, which was used as working electrode in the biosensor. The Pt UME exhibits the typical cyclic voltammogram (CV) of Pt UME with sigmoid shape and possesses good stability, enlarged current response and tunable dimension. In addition, it was an effective and simple method for toxicity biosensor using mixed microorganisms cultured in unsterilized lysogeny broth (LB) as the bioreceptor. K3[Fe(CN)6] was used as an electron mediator. Under the optimal conditions of 30 mM K3[Fe(CN)6], OD600 = 1 cell concentration, and 50 mM phosphate-buffered solution (PBS), the half-maximal inhibitory concentration (IC50) values measured for Cd2+, Cu2+ and Ni2+ were 3.99 mg/L, 1.16 mg/L and 2.37 mg/L, respectively. The results indicated that the biosensor with large diameter Pt UME and mixed microorganisms cultured in unsterilized LB realized rapid and simple detection of water toxicity.
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Affiliation(s)
- Dengbin Yu
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, Jilin, PR China; State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, Jilin, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China; State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, 130012, PR China
| | - Quanying Wang
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, Jilin, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Youxing Fang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, Jilin, PR China
| | - Zhichao Kang
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, Jilin, PR China
| | - Ling Liu
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, Jilin, PR China; State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, Jilin, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Jingting He
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, Jilin, PR China
| | - Xuerong Han
- School of Life Science and Technology, Changchun University Science and Technology, Changchun, 130022, Jilin, PR China.
| | - Hongwen Yu
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, Jilin, PR China; School of Life Science and Technology, Changchun University Science and Technology, Changchun, 130022, Jilin, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China.
| | - Shaojun Dong
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, Jilin, PR China; University of Science and Technology of China, Hefei, 230026, Anhui, PR China.
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Pie N, Bettadpur SV, Tamisiea M, Krichman B, Save H, Poole S, Nagel P, Kang Z, Jacob G, Ellmer M, Fahnestock E, Landerer FW, McCullough C, Yuan D, Wiese DN. "Time Variable Earth Gravity Field Models From the First Spaceborne Laser Ranging Interferometer". J Geophys Res Solid Earth 2021; 126:e2021JB022392. [PMID: 35865454 PMCID: PMC9286545 DOI: 10.1029/2021jb022392] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Revised: 10/06/2021] [Accepted: 11/05/2021] [Indexed: 06/15/2023]
Abstract
The Gravity Recovery and Climate Experiment Follow-On (GRACE-FO), launched May 22, 2018 and collecting science data since June 2018, is extending the 15-year data record of Earth mass change established by its predecessor GRACE mission (2002-2017). The GRACE-FO satellites carry onboard a novel technology demonstration instrument for intersatellite ranging, the Laser Ranging Interferometer (LRI), in addition to the microwave interferometer (MWI) carried on GRACE. The LRI has out-performed its in-orbit performance requirements both in terms of accuracy as well as the duration of tracking. Here, we compare and validate LRI-based gravity solutions for January 2019 to September 2020 against the MWI solutions. The comparison between the two sets of gravity solutions shows great similarities in general and nearly perfect consistency at a large hydrologic basin spatial scale (100,000 km2 and above), commonly viewed as the spatial resolution established by GRACE. The comparison in the spectral domain shows differences at the higher degrees of the spectrum, with lower error in the zonal and near zonal terms for the LRI solutions. We conclude that the LRI observations can be used to recover time-varying gravity signals to at least the level of accuracy established by the MWI-based solutions. This is a promising finding, especially when considering the benefits of using the LRI over the MWI, such as the great stability of the instrument and the low occurrence of instrument reboot events.
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Affiliation(s)
- N. Pie
- Center for Space Research (CSR)The University of Texas at AustinAustinTXUSA
| | - S. V. Bettadpur
- Center for Space Research (CSR)The University of Texas at AustinAustinTXUSA
| | - M. Tamisiea
- Center for Space Research (CSR)The University of Texas at AustinAustinTXUSA
| | - B. Krichman
- Center for Space Research (CSR)The University of Texas at AustinAustinTXUSA
| | - H. Save
- Center for Space Research (CSR)The University of Texas at AustinAustinTXUSA
| | - S. Poole
- Center for Space Research (CSR)The University of Texas at AustinAustinTXUSA
| | - P. Nagel
- Center for Space Research (CSR)The University of Texas at AustinAustinTXUSA
| | - Z. Kang
- Center for Space Research (CSR)The University of Texas at AustinAustinTXUSA
| | - G. Jacob
- Center for Space Research (CSR)The University of Texas at AustinAustinTXUSA
| | - M. Ellmer
- Jet Propulsion Laboratory (JPL)California Institute of TechnologyPasadenaCAUSA
| | - E. Fahnestock
- Jet Propulsion Laboratory (JPL)California Institute of TechnologyPasadenaCAUSA
| | - F. W. Landerer
- Jet Propulsion Laboratory (JPL)California Institute of TechnologyPasadenaCAUSA
| | - C. McCullough
- Jet Propulsion Laboratory (JPL)California Institute of TechnologyPasadenaCAUSA
| | - D.‐N. Yuan
- Jet Propulsion Laboratory (JPL)California Institute of TechnologyPasadenaCAUSA
| | - D. N. Wiese
- Jet Propulsion Laboratory (JPL)California Institute of TechnologyPasadenaCAUSA
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Wang S, Ye J, Kang Z, Peng H, Mackey V, Sun L. The COVID-19 pandemic and the potential treatment of the novel coronavirus SARS-CoV-2. Am J Transl Res 2021; 13:871-881. [PMID: 33841627 PMCID: PMC8014381] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2020] [Accepted: 07/04/2020] [Indexed: 06/12/2023]
Abstract
Coronavirus SARS-CoV-2 is a novel coronavirus and the seventh that can infect human beings and result in severe and acute respiratory syndrome and deaths. Currently, the world is undergoing a global health emergency due to the SARS-CoV-2 pandemic. As of May 18, SARS-CoV-2 has spread to over two hundred countries and infected more than 4.8 million people, resulting in over 300,000 deaths since the first case of a novel pneumonia (COVID-19) patient was discovered in Wuhan, China at the end of December 2019. Currently, there are no effective and/or approved targeting drugs for it though various supportive therapy drugs such as small molecule drugs, vaccines, antibodies and even Chinese herb medicines have been used in the treatment of the first-line patients. However, certain drugs such as remdesivir and S416 are under clinical investigation and may become therapeutic drugs. In this article, we review and discuss SARS-CoV-2, its person-to-person transmission, genomics and proteomics, and the potential for drug development.
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Affiliation(s)
- Shilei Wang
- Shenzhen Academy of Peptide Targeting Technology at Pingshan and Shenzhen Tyercan Bio-Pharm Co., Ltd.Guangdong, China
| | - Jinlei Ye
- Shenzhen Academy of Peptide Targeting Technology at Pingshan and Shenzhen Tyercan Bio-Pharm Co., Ltd.Guangdong, China
| | - Zhichao Kang
- Shenzhen Academy of Peptide Targeting Technology at Pingshan and Shenzhen Tyercan Bio-Pharm Co., Ltd.Guangdong, China
| | - Hongmei Peng
- Scientific Research and Education Department, The First Peoples Hospital of Changde CityChangde 415000, Hunan, China
| | - Vienna Mackey
- Department of Medicine, School of Medicine, Tulane University Health Sciences CenterNew Orleans, USA
| | - Lichun Sun
- Shenzhen Academy of Peptide Targeting Technology at Pingshan and Shenzhen Tyercan Bio-Pharm Co., Ltd.Guangdong, China
- Department of Medicine, School of Medicine, Tulane University Health Sciences CenterNew Orleans, USA
- Sino-US Innovative Bio-Medical Center and Hunan Beautide PharmaceuticalsXiangtan, Hunan, China
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Choi I, Park SY, Lee SW, Kang Z, Jin YS, Kim IW. Dissolution enhancement of sorafenib tosylate by co-milling with tetradecanol post-extracted using supercritical carbon dioxide. Pharmazie 2020; 75:13-17. [PMID: 32033627 DOI: 10.1691/ph.2020.9120] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 09/29/2022]
Abstract
Sorafenib (SOR) is an important multikinase inhibitor for the treatment of cancers. It is commercially available (Nexavar from Bayer) in the form of sorafenib tosylate (SORt) due to its very low solubility. Studies have been made to further improve the dissolution behavior of the tosylate form (SORt), which could ultimately moderate the currently high daily dose. In the present study, SORt nanoparticles (SORt-NP) were prepared through a process that combined two industrially well-accepted techniques of co-milling and supercritical extraction. SORt was co-milled with hydrophilic polymers and tetradecanol, and the tetradecanol was post-extracted using supercritical carbon dioxide. The process enabled the formation of SORt-NP without using any toxic organic solvents, and the drug/excipient ratio (1:0.38) was substantially higher than determined in other studies (1:5.4-10). The enhanced dissolution behavior of SORt-NP was possible with an optimized number of milling cycles. Combining co-milling and supercritical extraction was able to form overall porous network structures with reduced crystallite size, which accelerated the dissolution of SORt-NP. The current method could be easily extended to other poorly soluble drugs as a general approach to improve their dissolution behaviors.
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Yu D, Li J, Kang Z, Liu L, He J, Fang Y, Yu H, Dong S. An unexpected discovery of 1,4-benzoquinone as a lipophilic mediator for toxicity detection in water. Analyst 2020; 145:5266-5272. [PMID: 32724991 DOI: 10.1039/d0an00991a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [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
Since most toxicological risk assessments are based on individual single-species tests, there is uncertainty in extrapolating these results to ecosystem assessments. Herein, we successfully developed a mediated microbial electrochemical biosensor with mixed microorganisms for toxicity detection by microelectrode array (MEA). In order to fully mobilize all the mixed microorganisms to participate in electron transfer to amplify the current signal, 1,4-benzoquinone (BQ) was used as the lipophilic mediator to mediate the intracellular metabolic activities. Hydrophilic K3[Fe(CN)6] was employed as an extracellular electron acceptor to transport electrons from hydroquinone (HQ) to the working electrode. Under the optimal conditions of 50 mM phosphate buffer solution (PBS), 0.4 mM BQ, 10 mM K3[Fe(CN)6] and OD600 = 0.5 bacteria concentration, the half-maximal inhibitory concentration (IC50) values measured with the composite-mediated respiration (CM-RES) of BQ-K3[Fe(CN)6] for Cu2+, Cd2+ and Zn2+ were 5.95, 7.12 and 8.86 mg L-1, respectively. IC50 values obtained with the single mediator K3[Fe(CN)6] were 2.34, 5.88 and 2.42 mg L-1 for the same samples. The results indicate that the biosensor with the single mediator K3[Fe(CN)6] had higher sensitivity to heavy metal ions than the biosensor with composite mediators. After verification, we found that the addition of BQ cannot amplify the current. The IC50 value of 0.89 mg L-1 for BQ was obtained using K3[Fe(CN)6] as the single mediator. This suggests that BQ is highly toxic, which explained why the sensitivity of the biosensor with the combined mediator BQ-K3[Fe(CN)6] was lower than that of the biosensor with the single mediator K3[Fe(CN)6]. At the same time, this also implies that toxicity itself cannot be ignored when it is used as an electronic mediator in a mediated microbial electrochemical biosensor.
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Affiliation(s)
- Dengbin Yu
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Science, Changchun 130102, Jilin, P. R. China.
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Wang N, Qiu Y, Xiao T, Wang J, Chen Y, Xu X, Kang Z, Fan L, Yu H. Comparative studies on Pb(II) biosorption with three spongy microbe-based biosorbents: High performance, selectivity and application. J Hazard Mater 2019; 373:39-49. [PMID: 30901684 DOI: 10.1016/j.jhazmat.2019.03.056] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [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: 12/11/2018] [Revised: 03/07/2019] [Accepted: 03/12/2019] [Indexed: 06/09/2023]
Abstract
Lead pollution in industrial-derived water has become an increasingly serious concern. The development of adsorbents with excellent efficiency, selectivity and separability using diverse microorganisms is ideal for treating lead pollution. In this study, gram-negative bacteria Pseudomonas putida I3, gram-positive bacteria Microbacterium sp. OLJ1 and mycelial fungus Talaromyces amestolkiae Pb served as raw materials to facilely synthesize sponge-like biosorbents via a one-step method at room temperature. SEM, EDS, FTIR, 13C NMR, XRD and XPS were used for investigating the morphology and surface properties of these three biosorbents. The obtained biosorbents possessed the same three-dimensional porous structure but different productivities and mechanical strengths due to the similar chemical compositions and different cell structures of their microorganisms. Pb(II) adsorption on X-PI3, X-OLJ1 and X-TPb was fast and pH dependent, with maximal adsorption capacities of 345.02, 237.02 and 199.02 mg/g, respectively. The biosorbents had a high selectivity for Pb(II), while Pb(II) remarkably suppressed the adsorption of co-existing heavy metal ions. The analyses indicated that Pb(II) removal was mainly achieved by ion exchange reactions, surface complexation with heteroatom-containing functional groups and microprecipitation. The treatment effects of synthetic and real wastewater revealed that the as-prepared biosorbents are promising for Pb(II) removal.
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Affiliation(s)
- Nana Wang
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Yuyin Qiu
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Tangfu Xiao
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China.
| | - Jianqiao Wang
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Yuxiao Chen
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Xingjian Xu
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, China
| | - Zhichao Kang
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, China
| | - Lili Fan
- School of Life Science and Technology, Changchun University of Science and Technology, Changchun, 130102, China
| | - Hongwen Yu
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, China.
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Kang Z, Zhu Y, Zhang QA, Dong L, Xu F, Zhang X, Guan M. Methylation and expression analysis of mismatch repair genes in extramammary Paget's disease. J Eur Acad Dermatol Venereol 2019; 33:874-879. [PMID: 30784122 DOI: 10.1111/jdv.15404] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Accepted: 11/21/2018] [Indexed: 12/11/2022]
Abstract
BACKGROUND Extramammary Paget's disease (EMPD) is a rare skin cancer with relative high frequencies of germline and somatic mismatch repair (MMR) genes mutations. However, the methylation and expression of these genes have not been validated in EMPD. OBJECTIVE This study aims to confirm the methylation and expression of MMR genes in EMPD. METHODS Immunohistochemical (IHC) staining detection and Methylation-specific PCR (MSP) were used to analyse MLH1, MSH2, MSH6 and PMS2 proteins' expression and promoters' methylation in 57 EMMD samples, and pyro-sequence was used to find highly methylated CpG sites in MSH2 promoter. RESULTS Immunohistochemical detection displayed reduced expression of MSH2 in 38.6% EMPD cases but normal expression of MLH1, MSH6 and PMS2 in all tumour tissues. Hypermethylation also was found in the promoter of MSH2 but not in other MMR genes. Pyrosequencing of MSH2 promoter showed CpG6 (-87) and CpG3 (-98) were the most common two methylated CpG dinucleotides. There is a significant correlation between reduced MSH2 expression and MSH2 methylation. CONCLUSION Reduced MSH2 expression and hypermethylation in this gene promoter were common genetic changes in EMPD, which expands our understanding of the role of MMR function in this skin cancer.
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Affiliation(s)
- Z Kang
- Department of Laboratory Medicine, Huashan Hospital, Fudan University, Shanghai, P. R. China
| | - Y Zhu
- Department of Pathology, Huashan Hospital North, Fudan University, Shanghai, P. R. China
| | - Q-A Zhang
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai, P. R. China
| | - L Dong
- Department of Laboratory Medicine, Huashan Hospital, Fudan University, Shanghai, P. R. China
| | - F Xu
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai, P. R. China
| | - X Zhang
- Central Laboratory, Huashan Hospital, Fudan University, Shanghai, P. R. China
| | - M Guan
- Department of Laboratory Medicine, Huashan Hospital, Fudan University, Shanghai, P. R. China.,Central Laboratory, Huashan Hospital, Fudan University, Shanghai, P. R. China
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Abstract
Objective: To estimate the choroidal thickness (CT) in healthy children aged 2-6 years old and its relation to axial length, age and gender. Methods: Cross-sectional study. CT was assessed using spectral domain optical coherence tomography (OCT) in 126 children aged 2 to 6 years. CT was measured at nine locations, including the subfovea and 1 mm and 3 mm nasal, temporal, superior and inferior to the fovea. Results: Mean subfoveal choroidal thickness (SFCT) was 331.56±62.03 μm. The choroid was thickest at the subfoveal and 1 mm temporal area, and thinner nasally compared to temporally, superiorly and inferiorly. No statistical significance of SFCT between male and female was noted. Stepwise multiple regression analysis revealed that axial length and age were associated significantly with SFCT (P=0.00), while there was no detectable effect of sex on SFCT (P=0.94). Conclusions: Choroidal thickness was negatively correlated to axial length and positively correlated to age in preschool children. The development of the choroid in early childhood offset the effect of the expansion of eyes. Gender played a minor role in the choroidal development in early childhood. (Chin J Ophthalmol, 2019, 55:111-114).
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Affiliation(s)
- Z Kang
- Xiamen Pediatric Hospital Affiliated to Fudan University, Xiamen Children's Hospital, Xiamen 361000, China
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Miao J, Wei X, Kang Z, Gao Y, Yu X. MYOFIBRILLAR AND DISTAL MYOPATHIES. Neuromuscul Disord 2018. [DOI: 10.1016/j.nmd.2018.06.300] [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: 12/01/2022]
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22
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Han J, Ji Y, Wang H, Cao D, Kang Z, Zhu J. Hydrocephalus combined with acute communicating syringomyelia resulting from aneurysmal subarachnoid hemorrhage: A case report. Rev Neurol (Paris) 2018; 174:175-177. [DOI: 10.1016/j.neurol.2017.06.027] [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] [Received: 12/20/2016] [Revised: 05/27/2017] [Accepted: 06/15/2017] [Indexed: 10/18/2022]
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Wang B, Wang N, Song N, Wang W, Wang J, Wang X, Kang Z. Overexpression of AtPAD4 in transgenic Brachypodium distachyon enhances resistance to Puccinia brachypodii. Plant Biol (Stuttg) 2017; 19:868-874. [PMID: 28836326 DOI: 10.1111/plb.12616] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [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: 05/26/2017] [Accepted: 08/21/2017] [Indexed: 06/07/2023]
Abstract
Brachypodium distachyon (L.) has recently emerged as a model for temperate grasses for investigating the molecular basis of plant-pathogen interactions. Phytoalexin deficient 4 (PAD4) plays a regulatory role in mediating expression of genes involved in plant defence. In this research, we generated transgenic B. distachyon plants constitutively overexpressing AtPAD4. Two transgenic B. distachyon lines were verified using PCR and GUS phenotype. Constitutive expression of AtPAD4 in B. distachyon enhanced resistance to Puccinia brachypodii. P. brachypodii generated less urediniospores on transgenic than on wild-type plants. AtPAD4 overexpression enhanced salicylic acid (SA) levels in B. distachyon-infected tissues. qRT-PCR showed that expression of pathogenesis-related 1 (PR1) and other defence-related genes were up-regulated in transformed B. distachyon following infection with P. brachypodii. Our results indicate that AtPAD4 overexpression in B. distachyon plants led to SA accumulation and induced PR gene expression that reduced the rate of colonisation by P. brachypodii.
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Affiliation(s)
- B Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Life Sciences, Northwest A & F University, Yangling, Shaanxi, China
| | - N Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection, Northwest A & F University, Yangling, Shaanxi, China
| | - N Song
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection, Northwest A & F University, Yangling, Shaanxi, China
| | - W Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection, Northwest A & F University, Yangling, Shaanxi, China
| | - J Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection, Northwest A & F University, Yangling, Shaanxi, China
| | - X Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection, Northwest A & F University, Yangling, Shaanxi, China
| | - Z Kang
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection, Northwest A & F University, Yangling, Shaanxi, China
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Affiliation(s)
- Z Kang
- Department of Radiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - X D Min
- Department of Radiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Z Y Feng
- Department of Radiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - L Wang
- Department of Radiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
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25
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Yew KL, Kang Z, Anum A. Late presentation of ALCAPA syndrome in an elderly Asian lady. Med J Malaysia 2016; 71:217-219. [PMID: 27770127] [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: 06/06/2023]
Abstract
Coronary artery anomalies are often discovered incidentally during cardiac catheterization or computed tomography coronary angiography and may involve the affected coronary artery origin and its course. Coronary artery anomalies are associated with congenital heart disease. The affected coronary arteries may have an unusual high take off origin, origin from contralateral or non-coronary sinus, origin from the pulmonary artery, single coronary system or coronary artery fistula.
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Affiliation(s)
- K L Yew
- Sarawak Heart Center, Cardiology Department, Kota Samarahan, 94300 Sarawak, Malaysia.
| | - Z Kang
- Sarawak Heart Center, Cardiology Department, Kota Samarahan, 94300 Sarawak, Malaysia
| | - A Anum
- Sarawak Heart Center, Cardiology Department, Kota Samarahan, 94300 Sarawak, Malaysia
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Grelewicz Z, Lee B, Cutright D, Kang Z, Gopalakrishnan M, Sathiaseelan V, Zhang H. SU-F-T-75: Dosimetry Considerations in the Use of Hanging-Eye Block for Lesions of the Conjunctiva. Med Phys 2016. [DOI: 10.1118/1.4956211] [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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27
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Lee B, Grelewicz Z, Kang Z, Cutright D, Gopalakrishnan M, Sathiaseelan V, Zhang H. SU-F-T-08: Brachytherapy Film Dosimetry in a Water Phantom for a Ring and Tandem HDR Applicator. Med Phys 2016. [DOI: 10.1118/1.4956142] [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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Zhang X, Feng H, Feng C, Xu H, Huang X, Wang Q, Duan X, Wang X, Wei G, Huang L, Kang Z. Isolation and characterisation of cDNA encoding a wheat heavy metal-associated isoprenylated protein involved in stress responses. Plant Biol (Stuttg) 2015; 17:1176-86. [PMID: 25951496 DOI: 10.1111/plb.12344] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [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: 02/23/2015] [Accepted: 05/01/2015] [Indexed: 05/03/2023]
Abstract
In cells, metallochaperones are important proteins that safely transport metal ions. Heavy metal-associated isoprenylated plant proteins (HIPPs) are metallochaperones that contain a metal binding domain and a CaaX isoprenylation motif at the carboxy-terminal end. To investigate the roles of wheat heavy metal-associated isoprenylated plant protein (TaHIPP) genes in plant development and in stress responses, we isolated cDNA encoding the wheat TaHIPP1 gene, which contains a heavy metal-associated domain, nuclear localisation signals and an isoprenylation motif (CaaX motif). Quantitative real-time PCR analysis indicated that the TaHIPP1 gene was differentially expressed under biotic and abiotic stresses. Specifically, TaHIPP1 expression was up-regulated by ABA exposure or wounding. Additionally, TaHIPP1 over-expression in yeast (Schizosaccharomyces pombe) significantly increased the cell growth rate under Cu(2+) and high salinity stresses. The nuclear localisation of the protein was confirmed with confocal laser scanning microscopy of epidermal onion cells after particle bombardment with chimeric TaHIPP1-GFP constructs. In addition, TaHIPP1 was shown to enhance the susceptibility of wheat to Pst as determined by virus-induced gene silencing. These data indicate that TaHIPP1 is an important component in defence signalling pathways and may play a crucial role in the defence response of wheat to biotic and certain abiotic stresses.
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Affiliation(s)
- X Zhang
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Life Science, Northwest A&F University, Yangling, Shaanxi, China
| | - H Feng
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection, Northwest A&F University, Yangling, Shaanxi, China
| | - C Feng
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Life Science, Northwest A&F University, Yangling, Shaanxi, China
| | - H Xu
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Life Science, Northwest A&F University, Yangling, Shaanxi, China
| | - X Huang
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection, Northwest A&F University, Yangling, Shaanxi, China
| | - Q Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Life Science, Northwest A&F University, Yangling, Shaanxi, China
| | - X Duan
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Life Science, Northwest A&F University, Yangling, Shaanxi, China
| | - X Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection, Northwest A&F University, Yangling, Shaanxi, China
| | - G Wei
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection, Northwest A&F University, Yangling, Shaanxi, China
| | - L Huang
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection, Northwest A&F University, Yangling, Shaanxi, China
| | - Z Kang
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection, Northwest A&F University, Yangling, Shaanxi, China
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Hu M, Sheng J, Kang Z, Zou L, Guo J, Sun P. Magnetic resonance imaging and dual energy X-ray absorptiometry of the lumbar spine in professional wrestlers and untrained men. J Sports Med Phys Fitness 2014; 54:505-510. [PMID: 25034552] [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
The aim of this study was to examine the relation between bone marrow adipose tissue (BMAT) and bone mineral density (BMD) of lumbar spine in male professional wrestlers and healthy untrained men. A total of 14 wrestlers (22.9±3.4 years) and 11 controls (24.4±1.6 years) were studied cross-sectionally. Body composition and BMD were measured by dual-energy X-ray absorptiometry. Magnetic resonance imaging of the lumbar spine was examined in a sagittal T1-weighted (T1-w) spin-echo (SE) sequence. The averaged bone marrow signal intensity (SI) of L2-L4 was related to the signal of an adjacent nondegenerative disk. Mean SI of T1-w SE in wrestlers was lower than controls (P=0.001), indicating L2-L4 BMAT in wrestlers was lower compared to controls. L2-L4 BMD in wrestlers was higher than controls (P<0.001). In the total subject population, L2-L4 BMD was inversely correlated with mean SI of T1-w SE (r=-0.62, P=0.001). This association remained strong after adjusting for body mass and whole lean mass, but became weaker after adjusting for whole body or trunk fat percentage. The inverse relationship between BMAT and BMD was confirmed in this relatively small subject sample with narrow age range, which implies that exercise training is an important determinant of this association.
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Affiliation(s)
- M Hu
- Department of Sport and Health Sciences, Guangzhou Institute of Physical EducationGuangzhou, China -
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Kang Z, Zhu H, Luan H, Han F, Jiang W. Curculigoside A induces angiogenesis through VCAM-1/Egr-3/CREB/VEGF signaling pathway. Neuroscience 2014; 267:232-40. [DOI: 10.1016/j.neuroscience.2014.02.050] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2014] [Revised: 02/25/2014] [Accepted: 02/27/2014] [Indexed: 12/25/2022]
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Miao Y, Kang Z, Xu F, Qi S, Sheng Y, Han Y, Hu R, Guo X, Yang Q. Association analysis of the IL2RA gene with alopecia areata in a Chinese population. Dermatology 2013; 227:299-304. [PMID: 24280705 DOI: 10.1159/000351555] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2012] [Accepted: 04/12/2013] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Interleukin-2 receptor subunit alpha (IL2RA) is highly expressed on CD4+CD25+ regulatory T cells and is important for immune homeostasis and the suppression of autoimmune responses. It has been suggested that the single nucleotide polymorphism in IL2RA may affect the pathogenesis of alopecia areata (AA). OBJECTIVE Our aim was to investigate the link between IL2RA polymorphism and AA in a Chinese population. METHODS We examined 427 patients and 430 controls in this study. The rs3118470 polymorphism was evaluated using high-resolution melting analysis and direct sequencing. RESULTS The prevalence of the C/C, T/C and T/T genotypes was 16.2, 48.2 and 35.6%, respectively. The genotype distribution and allele frequencies were significantly different between AA and control subjects (p < 0.0001). The C allele frequency was significantly higher in the AA group (p < 0.0001), and the frequencies of C allele and C/C genotype were higher in the patients with family history (p = 0.034; p < 0.0001). CONCLUSIONS The rs3118470 single nucleotide polymorphism of IL2RA may be a genetic marker to assess the risk of AA in a Chinese population.
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Affiliation(s)
- Y Miao
- Department of Dermatology, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
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Bacchus I, Gopalakrishnan M, Kang Z. SU-E-T-594: Software Application for Comparison and Verification of Radiotherapy Treatment Plans. Med Phys 2013. [DOI: 10.1118/1.4815022] [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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Wang S, Zhu H, Lu C, Kang Z, Luo Y, Feng L, Lu X. Fermented milk supplemented with probiotics and prebiotics can effectively alter the intestinal microbiota and immunity of host animals. J Dairy Sci 2013; 95:4813-4822. [PMID: 22916885 DOI: 10.3168/jds.2012-5426] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2012] [Accepted: 05/26/2012] [Indexed: 01/03/2023]
Abstract
Fermented milk supplemented with 2 probiotic strains, Bifidobacterium lactis Bi-07 and Lactobacillus acidophilus NCFM, and a prebiotic, isomaltooligosaccharide, was orally administered to 100 healthy adults at 480 g/d for 2 wk in a randomized controlled trial. The fecal bacterial compositions of these subjects were examined by culture before and after the intervention. The same fermented milk was also orally fed to BALB/c mice, and immune as well as fecal bacteria analyses were conducted using the same culturing methods. After the intervention, increases in fecal bifidobacteria and lactobacilli were observed among the subjects compared with the subjects in the control group. In contrast, after the intervention, fecal enterobacilli were significantly decreased in the test group compared with the control group. The same effects on the composition of the intestinal microbiota were observed in mice. Furthermore, the tested mice were found to have significantly increased delayed-type hypersensitivity, plaque-forming cells, and half-hemolysis values after the intervention with the fermented milk. In summary, the synbiotic fermented milk containing probiotics and a prebiotic may contribute to improve intestinal health and may have a positive effect on the humoral and cell-mediated immunity of host animals.
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Affiliation(s)
- S Wang
- College of Food Science and Nutritional Engineering, China Agricultural University, Box 112, Beijing, 10083, P. R. China; Shijiazhuang Junlebao Dairy Co. Ltd., Shijiazhuang, Hebei, 050221, P. R. China
| | - H Zhu
- Shijiazhuang Junlebao Dairy Co. Ltd., Shijiazhuang, Hebei, 050221, P. R. China.
| | - C Lu
- Shijiazhuang Junlebao Dairy Co. Ltd., Shijiazhuang, Hebei, 050221, P. R. China
| | - Z Kang
- Shijiazhuang Junlebao Dairy Co. Ltd., Shijiazhuang, Hebei, 050221, P. R. China
| | - Y Luo
- College of Food Science and Nutritional Engineering, China Agricultural University, Box 112, Beijing, 10083, P. R. China
| | - L Feng
- Shijiazhuang Junlebao Dairy Co. Ltd., Shijiazhuang, Hebei, 050221, P. R. China
| | - X Lu
- Shijiazhuang Junlebao Dairy Co. Ltd., Shijiazhuang, Hebei, 050221, P. R. China
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Bi B, Xiao X, Zhang H, Gao J, Tao M, Niu H, Wang Y, Wang Q, Chen C, Sun N, Li K, Fu J, Gan Z, Sang W, Zhang G, Yang L, Tian T, Li Q, Yang Q, Sun L, Li Y, Rong H, Guan C, Zhao X, Ye D, Zhang Y, Ma Z, Li H, He K, Chen J, Cai Y, Zhou C, Luo Y, Wang S, Gao S, Liu J, Guo L, Guan J, Kang Z, Di D, Li Y, Shi S, Li Y, Chen Y, Flint J, Kendler K, Liu Y. A comparison of the clinical characteristics of women with recurrent major depression with and without suicidal symptomatology. Psychol Med 2012; 42:2591-2598. [PMID: 22716960 PMCID: PMC3488812 DOI: 10.1017/s003329171200058x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [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] [Received: 11/20/2011] [Revised: 03/02/2012] [Accepted: 03/06/2012] [Indexed: 11/22/2022]
Abstract
BACKGROUND The relationship between recurrent major depression (MD) in women and suicidality is complex. We investigated the extent to which patients who suffered with various forms of suicidal symptomatology can be distinguished from those subjects without such symptoms. METHOD We examined the clinical features of the worst episode in 1970 Han Chinese women with recurrent DSM-IV MD between the ages of 30 and 60 years from across China. Student's t tests, and logistic and multiple logistic regression models were used to determine the association between suicidality and other clinical features of MD. RESULTS Suicidal symptomatology is significantly associated with a more severe form of MD, as indexed by both the number of episodes and number of MD symptoms. Patients reporting suicidal thoughts, plans or attempts experienced a significantly greater number of stressful life events. The depressive symptom most strongly associated with lifetime suicide attempt was feelings of worthlessness (odds ratio 4.25, 95% confidence interval 2.9-6.3). Excessive guilt, diminished concentration and impaired decision-making were also significantly associated with a suicide attempt. CONCLUSIONS This study contributes to the existing literature on risk factors for suicidal symptomatology in depressed women. Identifying specific depressive symptoms and co-morbid psychiatric disorders may help improve the clinical assessment of suicide risk in depressed patients. These findings could be helpful in identifying those who need more intense treatment strategies in order to prevent suicide.
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Affiliation(s)
- B. Bi
- The First Hospital of China Medical University, Shenyang, People's Republic of China (PRC)
| | - X. Xiao
- The First Hospital of China Medical University, Shenyang, People's Republic of China (PRC)
| | - H. Zhang
- The First Hospital of China Medical University, Shenyang, People's Republic of China (PRC)
| | - J. Gao
- ZheJiang Traditional Chinese Medical Hospital, Hangzhou, PRC
| | - M. Tao
- Second Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, PRC
| | - H. Niu
- No. 1 Hospital of Zhengzhou University, Zhengzhou, PRC
| | - Y. Wang
- Shandong Mental Health Center, Shan Dong, PRC
| | - Q. Wang
- Beijing Anding Hospital, Capital Medical University, Beijing, PRC
| | - C. Chen
- No. 1 Hospital of Medical College of Xian Jiaotong University, Xian, Shaan Xi, PRC
| | - N. Sun
- No. 1 Hospital of Shanxi Medical University, Shanxi, PRC
| | - K. Li
- Mental Hospital of Jiangxi Province, Jiangxi, PRC
| | - J. Fu
- ShengJing Hospital of China Medical University, Liaoning, PRC
| | - Z. Gan
- No. 3 Affiliated Hospital of Zhongshan University, Guangdong, PRC
| | - W. Sang
- Hebei Mental Health Center, Hebei, PRC
| | - G. Zhang
- No. 4 Affiliated Hospital of Jiangsu University, Jiang Su, PRC
| | - L. Yang
- Jilin Brain Hospital, Jilin, PRC
| | - T. Tian
- Tianjin Anding Hospital, Tianjin, PRC
| | - Q. Li
- No. 1 Mental Health Center Affiliated Harbin Medical University, Heilongjiang, PRC
| | - Q. Yang
- Chongqing Mental Health Center, Chongqing, PRC
| | - L. Sun
- Psychiatric Hospital of Henan Province, Henan, PRC
| | - Ying Li
- Dalian No. 7 People's Hospital and Dalian Mental Health Center, Dalian, PRC
| | - H. Rong
- Shenzhen Kangning Hospital, Shenzhen, PRC
| | - C. Guan
- Nanjing Brain Hospital, Jiang Su, PRC
| | - X. Zhao
- The First Hospital of Hebei Medical University, Shijiazhuang, PRC
| | - D. Ye
- Sichuan Mental Health Center, Sichuan, PRC
| | - Y. Zhang
- Lanzhou University Second Hospital, Second Clinical Medical College of Lanzhou University, Gansu Province, PRC
| | - Z. Ma
- No. 1 Hospital of Chongqing Medical University, Chongqing, PRC
| | - H. Li
- Mental Health Center of West China Hospital of Sichuan University, Si Chuan, PRC
| | - K. He
- Shanghai Tongji University Affiliated Tongji Hospital, Shanghai, PRC
| | - J. Chen
- Shanghai Jiao Tong University School of Medicine Affiliated Shanghai Mental Health Center, Shanghai, PRC
| | - Y. Cai
- Fudan University Affiliated Huashan Hospital, Shanghai, PRC
| | - C. Zhou
- Wuhan Mental Health Center, Hubei, PRC
| | - Y. Luo
- No. 3 Hospital of Heilongjiang Province, Heilongjiang, PRC
| | - S. Wang
- The First Affiliated Hospital of Jinan University, Guangzhou, PRC
| | - S. Gao
- Ningbo Kangning Hospital, Zhejiang, PRC
| | - J. Liu
- Suzhou Guangji Hospital, Jiangsu, PRC
| | - L. Guo
- The Fourth Military Medical University Affiliated Xijing Hospital, Shaanxi, PRC
| | - J. Guan
- Guangzhou Brain Hospital/Guangzhou Psychiatric Hospital, Guangzhou, PRC
| | - Z. Kang
- No. 4 People's Hospital of Liaocheng, Shandong, PRC
| | - D. Di
- Mental Health Institute of Jining Medical College, Shandong, PRC
| | - Yajuan Li
- Xian Mental Health Center, Xian, Shanxi, PRC
| | - S. Shi
- Fudan University Affiliated Huashan Hospital, Shanghai, PRC
| | - Yihan Li
- Wellcome Trust Centre for Human Genetics, Oxford, UK
| | - Y. Chen
- Clinical Trial Service Unit, Richard Doll Building, Oxford, UK
| | - J. Flint
- Wellcome Trust Centre for Human Genetics, Oxford, UK
| | - K. Kendler
- Virginia Commonwealth University (VCU), Department of Psychiatry, Virginia Institute for Psychiatric and Behavioral Genetics, Richmond, VA, USA
| | - Y. Liu
- The First Hospital of China Medical University, Shenyang, People's Republic of China (PRC)
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Chen Y, Ouyang DS, Kang Z, Yang GP, Tan ZR, Zhou G, Yan J. Effect of a traditional Chinese medicine Liu Wei Di Huang Wan on the activities of CYP2C19, CYP2D6 and CYP3A4 in healthy volunteers. Xenobiotica 2011; 42:596-602. [PMID: 22208477 DOI: 10.3109/00498254.2011.644596] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Liu Wei Di Huang Wan (LDW), a well-known traditional Chinese medicine, is widely used for the treatment of various diseases in China. This study was designed to investigate the potential herb-drug interactions of LDW in healthy volunteers and attempted to ascertain whether the interaction might be affected by genotypes. We assessed the effect of LDW on the activities of CYP2C19, CYP2D6 and CYP3A4 in 12 Chinese healthy subjects in a single-center, controlled, non-blinded, two-way crossover clinical trial. The subject pool consisted of six extensive metabolizers with CYP2C19*1/*1 and six poor metabolizers with CYP2C19*2/*2. Placebo or 4.8 g LDW (12 pills, 0.2 g/pill, twice daily) was given to each participant for 14 continuous days with a wash-out period of 2 weeks after an oral administration of 30 mg omeprazole, 30 mg dextromethorphan hydrobromide and 7.5 mg midazolam. The activities of CYP2C19, CYP2D6 and CYP3A4 were ascertained by their respective plasma or urinary metabolic ratios on day 14 post-treatment. There is no difference in the activities of the three tested enzymes before or after a 14-day administration of LDW. LDW had no effect on the pharmacokinetic parameters of the substrates and their metabolites. A 14-day administration of LDW did not affect the activities of CYP2C19, CYP2D6 and CYP3A4. LDW is unlikely to cause pharmacokinetic interaction when it is combined with other medications predominantly metabolized by these enzymes.
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Affiliation(s)
- Y Chen
- Institute of Clinical Pharmacology, Central South University, Changsha, Hunan, China
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Shiloh R, Rakhra S, Evans J, Helenowski I, Kang Z, Mulcahy M, Small W, Hayes J. Retrospective Review of the Dosimetric and Treatment-Related Determinants of Toxicity in Patients with Esophageal Cancer Treated with Concurrent Chemoradiation with or without Surgery. Int J Radiat Oncol Biol Phys 2011. [DOI: 10.1016/j.ijrobp.2011.06.524] [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: 12/01/2022]
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Han LY, Wu QH, Jiao ML, Hao YH, Liang LB, Gao LJ, Legge DG, Quan H, Zhao MM, Ning N, Kang Z, Sun H. Associations between single-nucleotide polymorphisms (+45T>G, +276G>T, -11377C>G, -11391G>A) of adiponectin gene and type 2 diabetes mellitus: a systematic review and meta-analysis. Diabetologia 2011; 54:2303-14. [PMID: 21638131 DOI: 10.1007/s00125-011-2202-9] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2010] [Accepted: 04/27/2011] [Indexed: 02/07/2023]
Abstract
AIMS/HYPOTHESIS The associations between adiponectin polymorphisms and type 2 diabetes have been studied widely; however, results are inconsistent. METHODS We searched electronic literature databases and reference lists of relevant articles. A fixed or random effects model was used on the basis of heterogeneity. Sub-group and meta-regression analyses were conducted to explore the sources of heterogeneity. RESULTS There were no statistically significant associations between +45T>G (rs2241766), +276G>T (rs1501299), -11391G>A (rs17300539) and type 2 diabetes risk. However, for -11377C>G (rs266729), the pooled OR (95% CI) for G vs C allele was 1.07 (1.03-1.11, p = 0.001). Subgroup analysis by study design revealed that -11377C>G (rs266729) dominant model (CG+GG vs CC, p = 0.0008) and G vs C allele (p = 0.0004) might be associated with type 2 diabetes risk in population-based case-control studies. After stratification by ethnicity, we found that -11377C>G (rs266729) dominant model (CG+GG vs CC, p = 0.004) and G vs C allele (p = 0.001) might be associated with type 2 diabetes risk in white individuals. In individuals with a family history of diabetes, the presence of -11391G>A (rs17300539) dominant model (GA+AA vs GG) and A vs G allele might be associated with increased risk of type 2 diabetes. CONCLUSIONS/INTERPRETATION The presence of +45T>G (rs2241766), +276G>T (rs1501299) and -11391G>A (rs17300539) do not appear to influence the development of type 2 diabetes. However, G vs C allele of -11377C>G (rs266729) might be a risk factor for type 2 diabetes.
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Affiliation(s)
- L Y Han
- Department of Social Medicine, School of Public Health, Harbin Medical University, 157 Baojian Road, Harbin, Heilongjiang 150081, People's Republic of China
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Wang J, Xiao Y, Lu Y, Kang Z, Zhang M, Liu Y, Liang J, Zhang M, Li T. Pharmacokinetics of antofloxacin hydrochloride in healthy male subjects after multiple intravenous dose administration. Xenobiotica 2011; 41:561-6. [PMID: 21446836 DOI: 10.3109/00498254.2011.565820] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The purpose of the study was to evaluate pharmacokinetic characteristics of antofloxacin hydrochloride, a new fluoroquinolone antibiotic, during a multiple, intravenous dosing regimen. Twelve healthy, Chinese male volunteer subjects were each given 300 mg of antofloxacin by intravenous infusion once daily for 7 days. Blood and urine samples were taken at designated time points for analysis of antofloxacin concentration by high-performance liquid chromatography (HPLC). Safety and tolerability were assessed by evaluation of subject complaints, vital signs, electrocardiograms, electroencephalograms, clinical chemistry parameters, haematology and urinalysis and prothrombin time. The serum steady concentration of antofloxacin was obtained in 96 h after the administration of a daily intravenous dose of 300 mg of the drug. In the present study, the following pharmacokinetic parameters after 7 days of treatment with antofloxacin were determined to be: C(max) 3.81 ± 0.66 mg/L, C(min) 0.85 ± 0.19 mg/L, AUC(0-24) 60.51 ± 8.30 mg/L·h, C(av) 2.52 ± 0.35 mg/L, PTF 87.45 ± 3.37%, t(1/2)β 20.34 ± 1.88 h. The C(max) and AUC(0-24) after 7-day treatment were both higher than after the first dose (by 43% and 110%, respectively). The cumulative urinary elimination of antofloxacin within 96 h after the last dose was about 56%. During the study, there were neither subject complaints nor significant adverse clinical findings. Antofloxacin, administered intravenously as a single, daily 300 mg dose for 7 days, demonstrated favourable pharmacokinetic characteristics and tolerability. The results of this study indicate that antofloxacin hydrochloride is suitable for further clinical study.
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Affiliation(s)
- J Wang
- Institute of Clinical Pharmacology, First Hospital, Peking University, Haidian District, Beijing, China
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Mayeenuddin LH, Yu Y, Kang Z, Helman LJ, Cao L. Insulin-like growth factor 1 receptor antibody induces rhabdomyosarcoma cell death via a process involving AKT and Bcl-x(L). Oncogene 2010; 29:6367-77. [PMID: 20818434 DOI: 10.1038/onc.2010.364] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Insulin-like growth factors (IGFs) and their receptor, IGF-1 receptor (IGF1R), have important roles in growth, development, stress response, aging and cancer. There are many agents that inhibit IGF1R in oncology clinical development, and in some cases, they have been associated with rapid tumor regression. However, it is not clear by which process these targeted agents induce cancer cell death and how to predict such tumor responses. Here, we showed that IGF1R antibody led to rapid cell death and tumor regression in some rhabdomyosarcoma (RMS) cells. Mechanistic analysis revealed a rapid onset of mitochondrial-dependent apoptosis, including mitochondrial depolarization, cytochrome C release and the activation of specific caspases. The antibody sensitive cells had greater dependence on AKT for maintaining downstream signaling and the expression of a constitutively active AKT, which restored AKT-signaling in these cells, inhibited anti-IGF1R induced cell death. Further analysis showed IGF1R antibody-induced hypophosphorylation of BAD and activation of downstream BAX. Interestingly, the examination of RMS cell lines and tumors revealed an inverse correlation between elevated IGF1R and Bcl-2 level (P=0.033), with the sensitive cells lacking Bcl-2 expression. The overexpression of BAD specific target, Bcl-x(L), conferred resistance, whereas Bcl-x(L) knockdown sensitized cells lacking Bcl-2 to anti-IGF1R-induced cell death. We propose that RMS pathogenesis involves increased IGF1R expression that enhances AKT and Bcl-x(L)-mediated cell survival, and the blockage of IGF1R results in inhibition of survival signal from Bcl-x(L) and cell death in the sensitive Bcl-2 negative cells.
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Affiliation(s)
- L H Mayeenuddin
- Genetics Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892-4265, USA
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Wang J, Xiao Y, Lu Y, Kang Z, Zhang M, Liu Y, Liang J, Zhang M, Li T. Pharmacokinetics of antofloxacin hydrochloride, a novel fluoroquinolone, after single-dose intravenous administration in healthy Chinese male volunteers. Xenobiotica 2010; 40:344-9. [DOI: 10.3109/00498251003649798] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Diavolitsis V, Rademaker A, Boyle J, Kang Z, Kiel K, Mulcahy M, Small W. Change in Creatinine Clearance Over Time Following Upper Abdominal Irradiation: A Dose Volume Histogram Multivariate Analysis. Int J Radiat Oncol Biol Phys 2008. [DOI: 10.1016/j.ijrobp.2008.06.427] [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: 10/21/2022]
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Kang Z, Bédécarrats GY, Zadworny D. Expression patterns of the prolactin receptor gene in chicken lymphoid tissues during embryogenesis and posthatch period. Poult Sci 2007; 86:2404-12. [PMID: 17954592 DOI: 10.3382/ps.2007-00235] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Prolactin (PRL) is a pituitary hormone with multiple homeostatic roles among vertebrates. Although it has mainly been studied in relation to its role during the initiation and maintenance of incubation behavior in avian species, it has also been shown to act on the immune system. In this study, levels of PRL receptor (PRLR) mRNA were quantified by real-time PCR, and tissue expression was localized by in situ hybridization in primary and secondary lymphoid organs. Prolactin receptor was shown to be expressed in the bursa follicles, thymus lobules, and splenic pulp at all stages of development examined. Levels of PRLR expression were consistently higher in the bursa of Fabricius when compared with other lymphoid organs, suggesting that PRL acts primarily on bursal development. Furthermore, levels of PRLR mRNA appeared to fluctuate during embryogenesis, with a significant increase observed at embryonic day 19 in the bursa, at 7 d of age in the thymus, and on hatching day in the spleen. Thus, PRL might play an important role during the development of the immune system in chickens.
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Affiliation(s)
- Z Kang
- Department of Animal and Poultry Science, University of Guelph, Guelph, Ontario, Canada, N1G 2W1
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Kang Z, Li H, Li G, Yin D. Reaction of pyridoxamine with malondialdehyde: Mechanism of inhibition of formation of advanced lipoxidation end-products. Amino Acids 2005; 30:55-61. [PMID: 15990947 DOI: 10.1007/s00726-005-0209-6] [Citation(s) in RCA: 33] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2005] [Accepted: 03/21/2005] [Indexed: 12/31/2022]
Abstract
Advanced glycation end products (AGEs) and advanced lipoxidation end products (ALEs) are implicated in many age-related chronic diseases and in protein aging. Recent studies suggest that pyridoxamine (PM) is an efficient AGEs/ALEs inhibitor in various biological systems. Because malondialdehyde (MDA) is an important intermediate in the formation of ALEs during lipid peroxidation, the purpose of this study is to determine whether PM can trap MDA directly and thereby prevent ALEs formation. PM reacted readily with MDA under physiological conditions. Within 6 h, a 1-pyridoxamino-propenal adduct derived from reaction of equimolar PM + MDA was detected. A 1-amino-3-iminopropene complex and a dihydropyridine-pyridinium complex were also identified after 7 d incubation. PM also greatly inhibited the lipofuscin-like fluorescence formation induced by MDA reaction with bovine serum albumin (BSA). Our results showed clearly that PM inhibited the formation of ALEs by trapping MDA directly under physiological condition, and provide insight into the mechanism of action of PM in protecting proteins against carbonyl stress.
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Affiliation(s)
- Z Kang
- Aging Biochemistry Lab, College of Life Sciences, Hunan Normal University, Changsha, Hunan, Peoples' Republic of China
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Yang H, Makeyev EV, Kang Z, Ji S, Bamford DH, van Dijk AA. Cloning and sequence analysis of dsRNA segments 5, 6 and 7 of a novel non-group A, B, C adult rotavirus that caused an outbreak of gastroenteritis in China. Virus Res 2004; 106:15-26. [PMID: 15522443 DOI: 10.1016/j.virusres.2004.05.011] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.1] [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: 04/04/2004] [Revised: 05/28/2004] [Accepted: 05/28/2004] [Indexed: 10/26/2022]
Abstract
A diarrhoeal outbreak among adults in China was caused by a new rotavirus, termed ADRV-N, that does not react with antisera directed against group A, B or C rotaviruses [Zhonghua Liu Xing Bing Xue Za Zhi (Chin. Epidemiol.) 19 (1998) 336]. ADRV-N can be propagated in cell cultures [Zhonghua Yi Xue Za Zhi (Natl. Med. J. China) 82 (2002) 14]. We present the complete sequences for ADRV-N genome segments 5 and 6, and a full ORF sequence of genome segment 7. The deduced amino acid sequences suggest that these segments encode NSP1, VP6 and NSP3, respectively. These three ADRV-N genome segments have a unique -ACCCC-3' terminal sequence. The 5'-GG- terminus of segments 5 and 6 is the same as that of other rotaviruses. The amino acid similarity between VP6 and NSP3 of ADRV-N and the cognate sequences of their closest counterpart, group B IDIR, was 37 and 35%, respectively. The ADRV-N NSP1 has a double-stranded RNA binding motif (DSRM) and a putative autoproteolytic cleavage motif upstream from the DSRM. The putative ADRV-N NSP3 has a truncated C-terminus compared to the cognate protein of group B rotaviruses. All the available data demonstrate that ADRV-N differs significantly from the known rotaviruses and strongly suggest that ADRV-N is the first recognized member of a new group of rotaviruses infecting humans.
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Affiliation(s)
- H Yang
- Institute of Biotechnology and Faculty of Biosciences, University of Helsinki, Biocenter 2, P.O. Box 56 (Viikinkaari 5), FIN-00014 Helsinki, Finland
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Cao J, Zhang Q, Wang Z, Liu F, Kang Z. An investigative report on the phenomenon of postponing the birth of a second child among farmers in Liaoning province. Chin J Popul Sci 2002; 9:9-17. [PMID: 12320986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/26/2023]
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Kang Z, Huang L, Krieg U, Mauler-Machnik A, Buchenauer H. Effects of tebuconazole on morphology, structure, cell wall components and trichothecene production of Fusarium culmorum in vitro. Pest Manag Sci 2001; 57:491-500. [PMID: 11407024 DOI: 10.1002/ps.310] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [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
The effects of tebuconazole, a systemic fungicide, on the morphology, structure, cell wall components and toxin production of Fusarium culmorum were investigated in vitro. Treatment was by application of four filter paper strips (0.75 cm x 5.0 cm) soaked in 20 micrograms ml-1 fungicide placed around a point inoculum in Petri dishes. Mycelial growth was strongly inhibited by fungicide treatment. Scanning electron microscopic observations showed that the fungicide caused irregular swelling and excessive branching of hyphae. The morphological changes induced by the fungicide at the ultrastructural level included considerable thickening of the hyphal cell walls, excessive septation, the formation of the incomplete septa, extensive vacuolisation, accumulation of lipid bodies and progressing necrosis or degeneration of the hyphal cytoplasm. Non-membrane inclusion bodies were often detected in the hyphal cytoplasm. Furthermore, the formation of new hyphae (daughter hyphae) inside collapsed hyphal cells was common following treatment. The daughter hyphae also displayed severe alterations such as irregular thickening of the cell walls and necrosis of the cytoplasm. Using cytochemical techniques, the labelling densities of chitin and beta-1,3-glucan in the cell walls of the fungicide-treated hyphae were more pronounced than in those of the control hyphae. Moreover, immunogold labelling with antiserum against deoxynivalenol (DON) revealed that Fusarium toxin DON was localized in the cell walls, cytoplasm, mitochondria and vacuoles of the hyphae from the control and the fungicide treatment, but the labelling density in the fungicide-treated hyphae decreased dramatically compared with the control hyphae, indicating that tebuconazole reduced Fusarium toxin production of the fungus.
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Affiliation(s)
- Z Kang
- Institute of Phytomedicine (360), University Hohenheim, D-70593, Stuttgart, Germany
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Abstract
Somatostatin (SOM) mRNA in developing ganglion cell layer (GCL) detected by in situ hybridization histochemistry and SOM peptide in developing optic chiasma and optic tract detected by immunocytochemistry were monitored to explore whether ganglion cells expressing SOM project to the visual center. Most of these cells in the developing GCL expressed SOM transiently from embryonic day 13 (E13) to E21. The cells expressing SOM mRNA initially followed a central-to-peripheral pattern of development. The cells expressing SOM mRNA in the retinas of fetuses became detectable at E13. From E14 to E17 the number of cells expressing SOM mRNA increased rapidly. At E17 most of the cells in the developing GCL expressed SOM mRNA. From E18 to postnatal days the positive cells became sparse except at the postnatal day 0 (PND0) the positive cells decreased dramatically in comparison with that at the E21. At PND15, the positive cells only can be found in the inner neuroblastic layer and in the ganglion cell layer. At PND20 the distribution pattern and the number of the positive cells were essentially the same as that in adult rat. SOM immunoreactivity was detectable at E16 in the developing optic chiasma and optic tract; the majority of the fibers in these area were SOM positive. From E16 to E18 the density of the immunostaining increased rapidly, whereas from E19 to E21 the density decreased. At PND0 no positive fibers were seen. The transient presence of SOM in most of the ganglion cells in the developing ganglion cell layer has prompted us to study the role of SOM in generation and differentiation of the retinal ganglion cells, and formation of the retina-visual center projections.
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Affiliation(s)
- Z Xiang
- Department of Histology and Embryology, Second Military Medical University, 200433, Shanghai, China.
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Kang Z, Buchenauer H. Ultrastructural and cytochemical studies on the infection of wheat spikes byFusarium culmorum as well as on degradation of cell wall components and localization of mycotoxins in the host tissue. Mycotoxin Res 2000; 16 Suppl 1:1-5. [PMID: 23605402 DOI: 10.1007/bf02942968] [Citation(s) in RCA: 4] [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: 10/21/2022]
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Huang H, Yuan Z, Hu M, Kang Z. [The alternation current conductive property of blood]. Sheng Wu Yi Xue Gong Cheng Xue Za Zhi 1999; 16:181-3. [PMID: 12552659] [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
The blood electro-frequency properties of normal human body were investigated in the range of 1 Hz-10 MHz. The method of testing and the equipment were examined to meet the need for the measurement of blood property. In the experiment, it was discovered that the electric conductivity of blood increased obviously with the increase of testing frequency in the rage of 100 Hz-10 KHz, but almost no change in phase was noted. This result suggests it is necessary to modify the previous work and build up a reasonable equivalent electric model of blood.
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Affiliation(s)
- H Huang
- Biomechanics Institute, Sichuan University, Chengdu 610065
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