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Wei J, Wang YX, Guan TK, Wang QY, Zhang J, Zhang JY, Wang JL, Chen QJ, Zhang GQ. Bacterial communities during composting cultivation of oyster mushroom Pleurotus floridanus using broken eggs as the nitrogen source and study of agronomic and nutritional properties. Front Microbiol 2024; 14:1274032. [PMID: 38282740 PMCID: PMC10822690 DOI: 10.3389/fmicb.2023.1274032] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Accepted: 12/31/2023] [Indexed: 01/30/2024] Open
Abstract
Introduction Broken eggs are a byproduct of the poultry industry and a potential nitrogen source for mushroom cultivation. However, its feasibility needs to be evaluated experimentally. Methods In this study, a series of different addition amounts (0, 1.8, 3.6, 5.3 and 8.5%, w/w) of broken egg mixture (BEM) were applied in the composting cultivation process of oyster mushroom. The physicochemical properties and bacterial communities of composting substrate, and agronomic and nutritional properties of fruiting bodies were determined. Results and discussion The results showed that the BEM addition significantly (P < 0.05) increased the total nitrogen content in the composted substrate, and the contents of crude protein, total amino acids and essential amino acids of mushrooms. The P3 treatment (initial C/N of 26:1) showed the highest biological efficiency (BE) of 100.19% and a low contamination rate (CR) of 7.00%, while the higher dosage of BEM (P4 and P5) led to a sharp decrease in BE and a sharp increase in CR. High throughput sequencing revealed that the addition of BEM significantly (P < 0.05) changed the bacterial communities in the substrate at the beginning of composting. Streptococcus and Lactococcus were predominant bacterial genera in BEM treatments at the beginning stage of composting, while Acinetobacter became predominant at the ending stage. The co-occurrence network analysis showed that the P3 treatment demonstrated a much more complex bacterial community. The structural equation model analysis indicated that the addition of BEM affected the bacterial communities and nitrogen metabolism during composting, which further affected agronomic and nutritional properties of oyster mushrooms. An appropriate amount of BEM combined with composting processes can significantly improve the yield and quality of oyster mushroom, providing a new way for efficient utilization of BEM.
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Affiliation(s)
| | | | | | | | | | | | | | - Qing-Jun Chen
- College of Plant Science and Technology, Beijing Key Laboratory for Agricultural Application and New Technique, Beijing University of Agriculture, Beijing, China
| | - Guo-Qing Zhang
- College of Plant Science and Technology, Beijing Key Laboratory for Agricultural Application and New Technique, Beijing University of Agriculture, Beijing, China
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Liu S, Liu C, Chen QJ, Zhu ZG, Lyu XJ, Wang CL, Yin WW. [Interpretation of the National Regulation for the Rabies Exposure Prophylaxis (2023 Edition)]. Zhonghua Liu Xing Bing Xue Za Zhi 2023; 44:1497-1506. [PMID: 37875436 DOI: 10.3760/cma.j.cn112338-20230905-00127] [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: 10/26/2023]
Abstract
Rabies is one of the important zoonotic infectious diseases, with a mortality rate of almost 100%. Rabies is a vaccine preventable disease, and proper rabies exposure prophylaxis can effectively prevent the occurrence of human rabies. In recent years, there has been significant progress in clinical research on the rabies exposure prophylaxis both domestically and internationally. World Health Organization (WHO) released the Rabies Vaccine: WHO Position Paper-April 2018. In order to guide medical institutions of all levels in rabies exposure prophylaxis, the National Administration of Disease Prevention and Control, in conjunction with the National Health Commission of the People's Republic of China, organized the Rabies Vaccine Working Group of the National Immunization Program Technical Working Group and invited experts to revise and issue the National Regulation for the Rabies Exposure Prophylaxis (2023 Edition). This article compares the National Regulation for the Rabies Exposure Prophylaxis (2009 Edition) and interprets the updated key points and supporting basis of the new version of the guidelines to guide clinical application and implementation.
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Affiliation(s)
- S Liu
- Department of Emergency, First Hospital of Peking University, Beijing 100034, China
| | - C Liu
- Department of Emergency, First Hospital of Peking University, Beijing 100034, China
| | - Q J Chen
- Department of Emergency, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
| | - Z G Zhu
- Immunization Planning Institute, Wuhan Center for Disease Control and Prevention, Wuhan 430024, China
| | - X J Lyu
- National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - C L Wang
- Department of Emergency Surgery, Peking University People's Hospital, Beijing 100044, China
| | - W W Yin
- Division of Infectious Disease Management, Chinese Center for Disease Control and Prevention, Beijing 102206, China
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Lyu XJ, Dong GM, Liu XQ, Liu S, Liu C, Chen QJ, Yin WW, Wang CL. [Progress and prospect of clinical application of anti-rabies virus monoclonal antibody preparation]. Zhonghua Yi Xue Za Zhi 2023; 103:2475-2479. [PMID: 37491162 DOI: 10.3760/cma.j.cn112137-20230307-00341] [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: 07/27/2023]
Abstract
Rabies is a severe infectious disease caused by the rabies virus, which seriously damages the central nervous system. Once it occurs, the fatality rate is close to 100%. The World Health Organization's position paper on rabies vaccines recognizes that rabies immunoglobulin (RIG) should be used for post-exposure prophylaxis (PEP) in all category Ⅲ exposure for the first time, as well as in category Ⅱ exposure that suffer from severe immune deficiency, long-term massive use of immunosuppressants, and head and face exposure. The anti-rabies virus monoclonal antibody has high purity and specific activity, can be produced on a sustainable scale, and has no risk of blood source virus contamination. Preclinical pharmacodynamic studies and clinical trial results of the anti-rabies virus monoclonal antibody preparation have confirmed that the preparation has a broad-spectrum neutralization effect on the rabies virus. Additionally, its combined application with the vaccine has little impact on the active immunity of the vaccine. Therefore, the anti-rabies virus monoclonal antibody preparation shows great potential for clinical application in PEP.
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Affiliation(s)
- X J Lyu
- National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - G M Dong
- Department of Arboviruses and Rabies, National Institutes for Food and Drug Control, Beijing 102629, China
| | - X Q Liu
- Center of Vaccine Clinical Research, Yunnan Center for Disease Control and Prevention, Kunming 650034, China
| | - S Liu
- Emergency Department, Peking University First Hospital, Beijing 100034, China
| | - C Liu
- Emergency Department, Peking University First Hospital, Beijing 100034, China
| | - Q J Chen
- Emergency Department, Beijing Hepingli Hospital, Beijing 100013, China
| | - W W Yin
- Infectious Disease Management Department, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - C L Wang
- Emergency Department/Trauma Center, Peking University People's Hospital, Beijing 100044, China
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Guan TK, Wang QY, Li JS, Yan HW, Chen QJ, Sun J, Liu CJ, Han YY, Zou YJ, Zhang GQ. Biochar immobilized plant growth-promoting rhizobacteria enhanced the physicochemical properties, agronomic characters and microbial communities during lettuce seedling. Front Microbiol 2023; 14:1218205. [PMID: 37476665 PMCID: PMC10354297 DOI: 10.3389/fmicb.2023.1218205] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Accepted: 06/19/2023] [Indexed: 07/22/2023] Open
Abstract
Spent mushroom substrate (SMS) is the by-products of mushroom production, which is mainly composed of disintegrated lignocellulosic biomass, mushroom mycelia and some minerals. The huge output and the lack of effective utilization methods make SMS becoming a serious environmental problem. In order to improve the application of SMS and SMS derived biochar (SBC), composted SMS (CSMS), SBC, combined plant growth-promoting rhizobacteria (PGPR, Bacillus subtilis BUABN-01 and Arthrobacter pascens BUAYN-122) and SBC immobilized PGPR (BCP) were applied in the lettuce seedling. Seven substrate treatments were used, including (1) CK, commercial control; (2) T1, CSMS based blank control; (3) T2, T1 with combined PGPR (9:1, v/v); (4) T3, T1 with SBC (19:1, v/v); (5) T4, T1 with SBC (9:1, v/v); (6) T5, T1 with BCP (19:1, v/v); (7) T6, T1 with BCP (9:1, v/v). The physicochemical properties of substrate, agronomic and physicochemical properties of lettuce and rhizospheric bacterial and fungal communities were investigated. The addition of SBC and BCP significantly (p < 0.05) improved the total nitrogen and available potassium content. The 5% (v/v) BCP addiction treatment (T5) represented the highest fresh weight of aboveground and underground, leave number, chlorophyll content and leaf anthocyanin content, and the lowest root malondialdehyde content. Moreover, high throughput sequencing revealed that the biochar immobilization enhanced the adaptability of PGPR. The addition of PGPR, SBC and BCP significantly enriched the unique bacterial biomarkers. The co-occurrence network analysis revealed that 5% BCP greatly increased the network complexity of rhizospheric microorganisms and improved the correlations of the two PGPR with other microorganisms. Furthermore, microbial functional prediction indicated that BCP enhanced the nutrient transport of rhizospheric microorganisms. This study showed the BCP can increase the agronomic properties of lettuce and improve the rhizospheric microbial community.
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Affiliation(s)
- Ti-Kun Guan
- Beijing Key Laboratory for Agricultural Application and New Technique, College of Plant Science and Technology, Beijing University of Agriculture, Beijing, China
| | - Qiu-Ying Wang
- Beijing Key Laboratory for Agricultural Application and New Technique, College of Plant Science and Technology, Beijing University of Agriculture, Beijing, China
- College of Horticulture, Xinjiang Agricultural University, Urumqi, China
| | - Jia-Shu Li
- Beijing Key Laboratory for Agricultural Application and New Technique, College of Plant Science and Technology, Beijing University of Agriculture, Beijing, China
| | - Hui-Wen Yan
- Beijing Key Laboratory for Agricultural Application and New Technique, College of Plant Science and Technology, Beijing University of Agriculture, Beijing, China
| | - Qing-Jun Chen
- Beijing Key Laboratory for Agricultural Application and New Technique, College of Plant Science and Technology, Beijing University of Agriculture, Beijing, China
| | - Jian Sun
- Institute of Forestry and Pomology, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Chao-Jie Liu
- Beijing Key Laboratory for Agricultural Application and New Technique, College of Plant Science and Technology, Beijing University of Agriculture, Beijing, China
| | - Ying-Yan Han
- Beijing Key Laboratory for Agricultural Application and New Technique, College of Plant Science and Technology, Beijing University of Agriculture, Beijing, China
| | - Ya-Jie Zou
- Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Guo-Qing Zhang
- Beijing Key Laboratory for Agricultural Application and New Technique, College of Plant Science and Technology, Beijing University of Agriculture, Beijing, China
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Guo YX, Yang YR, Qin Y, Guan TK, Yang QZ, Wang YX, Tang S, Zhang GQ, Chen QJ. Nutritional qualities and antioxidant activity of Pleurotus floridanus grown on composted peach sawdust substrate with different composting time. Biotechnol Appl Biochem 2023; 70:210-220. [PMID: 35398919 DOI: 10.1002/bab.2344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Accepted: 03/25/2022] [Indexed: 11/10/2022]
Abstract
Recently, composting cultivation method is widely used in oyster mushroom production. In this study, we focused on the effects of composting processes on nutritional qualities and antioxidant activity of Pleurotus floridanus mushroom fruiting bodies. Three treatments of different composting time (2, 4, and 5 days) were performed with an atmospheric sterilization treatment as the control. The results showed that the pH value, total carbon content, and total nitrogen content of substrate were critical parameters which would significantly affect mushroom qualities and bioactivities. Fruiting bodies of the control demonstrated significantly higher crude protein content, total amino acid content, and essential amino acid content than that of composting treatments. Moreover, fruiting bodies of treatment D4 and D5 manifested significantly higher crude polysaccharide contents. Crude polysaccharide of treatment D4 represented the highest scavenging ability toward both radical 3-ethylbenzthiazoline-6-sulfonic acid (ABTS·+ ) and Hydroxyl radical (OH·). It suggests that composting processes is suitable for oyster mushroom cultivation based on nutritional and antioxidant qualities of fruiting bodies.
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Affiliation(s)
- Yu-Xin Guo
- College of Forestry and Horticulture, Xinjiang Agricultural University, Urumqi, China.,Beijing Key Laboratory for Agricultural Application and New Technique, College of Plant Science and Technology, Beijing University of Agriculture, Beijing, China
| | - Ya-Ru Yang
- Beijing Key Laboratory for Agricultural Application and New Technique, College of Plant Science and Technology, Beijing University of Agriculture, Beijing, China
| | - Yong Qin
- College of Forestry and Horticulture, Xinjiang Agricultural University, Urumqi, China
| | - Ti-Kun Guan
- Beijing Key Laboratory for Agricultural Application and New Technique, College of Plant Science and Technology, Beijing University of Agriculture, Beijing, China
| | - Qi-Zhi Yang
- Beijing Key Laboratory for Agricultural Application and New Technique, College of Plant Science and Technology, Beijing University of Agriculture, Beijing, China
| | - Yue-Xing Wang
- Beijing Key Laboratory for Agricultural Application and New Technique, College of Plant Science and Technology, Beijing University of Agriculture, Beijing, China
| | - Shi Tang
- Beijing Key Laboratory for Agricultural Application and New Technique, College of Plant Science and Technology, Beijing University of Agriculture, Beijing, China
| | - Guo-Qing Zhang
- Beijing Key Laboratory for Agricultural Application and New Technique, College of Plant Science and Technology, Beijing University of Agriculture, Beijing, China
| | - Qing-Jun Chen
- College of Forestry and Horticulture, Xinjiang Agricultural University, Urumqi, China.,Beijing Key Laboratory for Agricultural Application and New Technique, College of Plant Science and Technology, Beijing University of Agriculture, Beijing, China
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Yang YR, Guo YX, Wang QY, Hu BY, Tian SY, Yang QZ, Cheng ZA, Chen QJ, Zhang GQ. Impacts of composting duration on physicochemical properties and microbial communities during short-term composting for the substrate for oyster mushrooms. Sci Total Environ 2022; 847:157673. [PMID: 35905953 DOI: 10.1016/j.scitotenv.2022.157673] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [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: 06/05/2022] [Revised: 07/12/2022] [Accepted: 07/24/2022] [Indexed: 06/15/2023]
Abstract
A short-term composting process to prepare substrate is an effective way to cultivate oyster mushrooms (Pleurotus spp.), which can increase the yield of mushrooms and lower the rate of contamination in non-industrialized cultivation. Moreover, it is different from the traditional composting processes for fertilizers and lacks systematic study, such as microbial succession and compost quality. In this study, a series of different tests of composting duration (0, 2, 4 and 5 d) were performed. A composting duration of 4-5 d over 58 °C was suitable for mushroom cultivation based on the biological efficiency (BE) range of 69.76-73.41 % and the contamination rate of 0 %. The content of total carbon (TC) continuously decreased during composting, while the content of total nitrogen (TN) reacted in an opposite matter. The final TN and C/N ratios were 1.89 % and 28/1, respectively, which fell well within the optimal range of nutritional requirements for oyster mushroom cultivation. The composting bacteria were more diverse than the fungal species. Caldibacillus, Thermobispora, Thermopolyspora, Thermobacillus and Ureibacillus were the predominant bacterial genera during the thermophilic stage. Co-occurrence patterns of microbial communities and physicochemical properties were performed using a network analysis, which indicated that bacteria can play more efficient roles than fungi in the degradation of organic matter. The structural equation model showed that composting duration significantly affected bacterial diversity, lignocellulose degradation rates, and BE. The correlations between bioinformatics parameters with composting characters and agronomic traits were determined by the Mantel test and showed that the induction of bacterial diversity over time rapidly activated carbon metabolism during short-term composting. This study provides a new idea of agro-waste composting for mushroom cultivation.
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Affiliation(s)
- Ya-Ru Yang
- Beijing Key Laboratory for Agricultural Application and New Technique, College of Plant Science and Technology, Beijing University of Agriculture, Beijing 102206, China
| | - Yu-Xin Guo
- Beijing Key Laboratory for Agricultural Application and New Technique, College of Plant Science and Technology, Beijing University of Agriculture, Beijing 102206, China
| | - Qiu-Ying Wang
- Beijing Key Laboratory for Agricultural Application and New Technique, College of Plant Science and Technology, Beijing University of Agriculture, Beijing 102206, China; College of Horticulture, Xinjiang Agricultural University, Urumqi 830052, China
| | - Bo-Yang Hu
- Beijing Key Laboratory for Agricultural Application and New Technique, College of Plant Science and Technology, Beijing University of Agriculture, Beijing 102206, China
| | - Sen-Ya Tian
- Beijing Key Laboratory for Agricultural Application and New Technique, College of Plant Science and Technology, Beijing University of Agriculture, Beijing 102206, China
| | - Qi-Zhi Yang
- Beijing Key Laboratory for Agricultural Application and New Technique, College of Plant Science and Technology, Beijing University of Agriculture, Beijing 102206, China
| | - Zi-An Cheng
- Beijing Key Laboratory for Agricultural Application and New Technique, College of Plant Science and Technology, Beijing University of Agriculture, Beijing 102206, China
| | - Qing-Jun Chen
- Beijing Key Laboratory for Agricultural Application and New Technique, College of Plant Science and Technology, Beijing University of Agriculture, Beijing 102206, China.
| | - Guo-Qing Zhang
- Beijing Key Laboratory for Agricultural Application and New Technique, College of Plant Science and Technology, Beijing University of Agriculture, Beijing 102206, China.
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Sun Y, Liu ZL, Hu BY, Chen QJ, Yang AZ, Wang QY, Li XF, Zhang JY, Zhang GQ, Zhao YC. Purification and Characterization of a Thermo- and pH-Stable Laccase From the Litter-Decomposing Fungus Gymnopus luxurians and Laccase Mediator Systems for Dye Decolorization. Front Microbiol 2021; 12:672620. [PMID: 34413835 PMCID: PMC8369832 DOI: 10.3389/fmicb.2021.672620] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Accepted: 06/07/2021] [Indexed: 11/13/2022] Open
Abstract
An extracellular laccase (GLL) was purified from fermentation broth of the litter-decomposing fungus Gymnopus luxurians by four chromatography steps, which resulted in a high specific activity of 118.82 U/mg, purification fold of 41.22, and recovery rate of 42.05%. It is a monomeric protein with a molecular weight of 64 kDa and N-terminal amino acid sequence of AIGPV TDLHI, suggesting that GLL is a typical fungal laccase. GLL demonstrated an optimum temperature range of 55°C-65°C and an optimum pH 2.2 toward 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS). It displayed considerably high thermostability and pH stability with about 63% activity retained after 24 h at 50°C, and 86% activity retained after 24 h at pH 2.2, respectively. GLL was significantly enhanced in the presence of K+, Na+, and Mg2+ ions. It demonstrated K m of 539 μM and k cat /K m of 140 mM-1⋅s-1 toward ABTS at pH 2.2 and 37°C. Acetosyringone (AS) and syringaldehyde (SA) were the optimal mediators of GLL (0.4 U/ml) for dye decolorization with decolorization rates of about 60%-90% toward 11 of the 14 synthetic dyes. The optimum reaction conditions were determined to be mediator concentration of 0.1 mM, temperature range of 25°C -60°C, and pH 4.0. The purified laccase was the first laccase isolated from genus Gymnopus with high thermostability, pH stability, and effective decolorization toward dyes, suggesting that it has potentials for textile and environmental applications.
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Affiliation(s)
- Yue Sun
- Beijing Key Laboratory for Agricultural Application and New Technique, Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, College of Plant Science and Technology, Beijing University of Agriculture, Beijing, China
- Key Laboratory for Northern Urban Agriculture of Ministry of Agriculture and Rural Affairs, College of Bioscience and Resources Environment, Beijing University of Agriculture, Beijing, China
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
| | - Zi-Lu Liu
- Key Laboratory for Northern Urban Agriculture of Ministry of Agriculture and Rural Affairs, College of Bioscience and Resources Environment, Beijing University of Agriculture, Beijing, China
| | - Bo-Yang Hu
- Key Laboratory for Northern Urban Agriculture of Ministry of Agriculture and Rural Affairs, College of Bioscience and Resources Environment, Beijing University of Agriculture, Beijing, China
| | - Qing-Jun Chen
- Beijing Key Laboratory for Agricultural Application and New Technique, Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, College of Plant Science and Technology, Beijing University of Agriculture, Beijing, China
| | - Ai-Zhen Yang
- Key Laboratory for Northern Urban Agriculture of Ministry of Agriculture and Rural Affairs, College of Bioscience and Resources Environment, Beijing University of Agriculture, Beijing, China
| | - Qiu-Ying Wang
- Key Laboratory for Northern Urban Agriculture of Ministry of Agriculture and Rural Affairs, College of Bioscience and Resources Environment, Beijing University of Agriculture, Beijing, China
| | - Xiao-Feng Li
- Key Laboratory for Northern Urban Agriculture of Ministry of Agriculture and Rural Affairs, College of Bioscience and Resources Environment, Beijing University of Agriculture, Beijing, China
| | - Jia-Yan Zhang
- Key Laboratory for Northern Urban Agriculture of Ministry of Agriculture and Rural Affairs, College of Bioscience and Resources Environment, Beijing University of Agriculture, Beijing, China
| | - Guo-Qing Zhang
- Beijing Key Laboratory for Agricultural Application and New Technique, Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, College of Plant Science and Technology, Beijing University of Agriculture, Beijing, China
| | - Yong-Chang Zhao
- Institute of Biotechnology and Germplasmic Resource, Yunnan Academy of Agricultural Sciences, Kunming, China
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Guo YX, Chen QJ, Qin Y, Yang YR, Yang QZ, Wang YX, Cheng ZA, Cao N, Zhang GQ. Succession of the microbial communities and function prediction during short-term peach sawdust-based composting. Bioresour Technol 2021; 332:125079. [PMID: 33813177 DOI: 10.1016/j.biortech.2021.125079] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [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: 03/08/2021] [Revised: 03/20/2021] [Accepted: 03/25/2021] [Indexed: 06/12/2023]
Abstract
Short-term composting of raw materials for preparing oyster mushroom cultivation media is widely used in China, and its microbial mechanism needs to be further studied. 11-days' peach sawdust-based composting was performed to evaluate material conversion and microbial succession using physicochemical analysis and 16S rRNA and ITS sequencing. Composting bacteria demonstrated much higher abundance than fungi. Firmicutes, Actinobacteriota, and Proteobacteria were the dominant bacterial phyla, while most of fungal species belonged to Ascomycota. Moisture was the key factor at the beginning, while total nitrogen, temperature, and lignin became main influencing factors for composting maturity. Actinobacteriota, Firmicutes, and Proteobacteria of bacterial phyla, Eurotiomycetes and Sordariomycetes of fungal classes involved in lignocellulosic degradation. Bacterial function prediction analysis showed that carbohydrate metabolism and amino acid metabolism were the main metabolic pathways. These results confer a better understanding of material and microbial succession during short-term composting and also provide valuable utilization in mushroom industry.
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Affiliation(s)
- Yu-Xin Guo
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Key Laboratory for Agricultural Application and New Technique, College of Plant Science and Technology, Beijing University of Agriculture, Beijing 102206, China; College of Forestry and Horticulture, Xinjiang Agricultural University, Urumqi 830052, China
| | - Qing-Jun Chen
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Key Laboratory for Agricultural Application and New Technique, College of Plant Science and Technology, Beijing University of Agriculture, Beijing 102206, China
| | - Yong Qin
- College of Forestry and Horticulture, Xinjiang Agricultural University, Urumqi 830052, China
| | - Ya-Ru Yang
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Key Laboratory for Agricultural Application and New Technique, College of Plant Science and Technology, Beijing University of Agriculture, Beijing 102206, China
| | - Qi-Zhi Yang
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Key Laboratory for Agricultural Application and New Technique, College of Plant Science and Technology, Beijing University of Agriculture, Beijing 102206, China
| | - Yue-Xing Wang
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Key Laboratory for Agricultural Application and New Technique, College of Plant Science and Technology, Beijing University of Agriculture, Beijing 102206, China
| | - Zi-An Cheng
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Key Laboratory for Agricultural Application and New Technique, College of Plant Science and Technology, Beijing University of Agriculture, Beijing 102206, China
| | - Na Cao
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Key Laboratory for Agricultural Application and New Technique, College of Plant Science and Technology, Beijing University of Agriculture, Beijing 102206, China
| | - Guo-Qing Zhang
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Key Laboratory for Agricultural Application and New Technique, College of Plant Science and Technology, Beijing University of Agriculture, Beijing 102206, China.
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Lai J, Cai J, Chen QJ, He A, Wei MY. Influence of Crack Width on Chloride Penetration in Concrete Subjected to Alternating Wetting-Drying Cycles. Materials (Basel) 2020; 13:ma13173801. [PMID: 32872137 PMCID: PMC7503623 DOI: 10.3390/ma13173801] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 08/21/2020] [Accepted: 08/24/2020] [Indexed: 11/28/2022]
Abstract
To investigate the durability of reinforced concrete (RC) beams under the combined actions of transverse cracks and corrosion, corrosion tests were conducted on a total of eight RC beams with different water–cement ratios and cracking states. The effects of the transverse crack width, water–cement ratio, and the length of the wetting–drying cycle on the distribution of the free chloride concentration, the cross-sectional loss of the tensile steel bars, and the chloride diffusion coefficient are analyzed. The results show that the widths of the transverse crack and the water–cement ratio of concrete greatly affected the chloride profile and content of the RC beam specimens. Specifically, the chloride contents in all the cracked RC beams at the depth of the steel bar exceeded the threshold value of 0.15%. As the width of the cracks increased, the chloride concentration and penetration of the cracked concrete beam increased. However, the chloride concentration at the reinforcement position did not seem to be obviously affected by increasing the wetting–drying cycles from 182 days to 364 days. Moreover, the decrease of the water–cement ratio effectively inhibited the penetration of chloride ions in the RC beam specimens. In terms of the cross-sectional loss of the steel bars, the average loss of the steel bar increases with increasing crack width for the beams with 182-day cycles, while the effect of crack width on the average loss is not as noticeable for the beams with 364-day cycles. Finally, a model is proposed to predict the relationship between the crack width influence coefficient, μ, and the crack width, w, and this model shows good agreement with the experimental results.
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Affiliation(s)
- Jun Lai
- School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, China; (J.L.); (J.C.); (M.-Y.W.)
| | - Jian Cai
- School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, China; (J.L.); (J.C.); (M.-Y.W.)
- State Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou 510640, China
| | - Qing-Jun Chen
- School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, China; (J.L.); (J.C.); (M.-Y.W.)
- State Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou 510640, China
- Correspondence: ; Tel./Fax: +86-020-87114801
| | - An He
- School of Civil and Environmental Engineering, Nanyang Technological University, Singapore 639798, Singapore;
| | - Mu-Yang Wei
- School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, China; (J.L.); (J.C.); (M.-Y.W.)
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Guo L, Situ HL, Wang ZY, Lin Y, Chen QJ. Mechanism of Jinrong granule in inhibiting the invasion of breast cancer cells by the CXCL-1-CXCR2/CCL20 pathway. J BIOL REG HOMEOS AG 2020; 34:969-976. [PMID: 32657109 DOI: 10.23812/19-512-a-38] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The purpose of this study was to explore the effect of the Jinrong granule on CXCL-1 and the mechanism of the Jinrong granule on the metastasis and apoptosis of breast cancer cell lines. MDA-MB-231 human breast cancer cell line was divided into a control group, Jinrong extract group, CXCL-1 group and Jinrong extract + CXCL-1 group. The proliferation, apoptosis and permeability of the cells in the experimental group were studied. The protein expression of CXCL-1 was detected by Western blot. On this basis, a bioinformatics method was used to analyze the mechanism of CXCL-1. The results of the CCK8 experiment showed that compared with the control group, the cell proliferation activity of the CXCL-1 treatment group was enhanced while that of the Jinrong granule group was decreased. Compared with that of the CXCL-1 treatment group, the cell proliferation rate of the CXCL-1 + Jinrong granule group was significantly lower. The results showed that CXCL-1 could inhibit apoptosis of breast cancer cells, while the Jinrong granule could reverse the inhibition of apoptosis induced by CXCL-1. The results showed that the Jinrong granule could inhibit the ability of CXCL-1 to promote the migration and proliferation of breast cancer cells. The Jinrong granule could reverse the promoting effect of CXCL-1 on breast cancer through the CXCL-1- CLCR2/CCL20 pathway. In conclusion, the Jinrong granule can inhibit the invasion of breast cancer cells through the CXCL-1-CLCR2/CCL20 pathway.
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Affiliation(s)
- L Guo
- Department of Galactophore, The Second Affiliated Hospital of Guangzhou University of Traditional Chinese Medicine, Guangzhou, Guangdong Province, China
| | - H L Situ
- Department of Galactophore, The Second Affiliated Hospital of Guangzhou University of Traditional Chinese Medicine, Guangzhou, Guangdong Province, China
| | - Z Y Wang
- Research and Innovation Team of Department of Galactophore, The Second Affiliated Hospital of Guangzhou University of Traditional Chinese Medicine, Guangzhou, Guangdong Province, China
| | - Y Lin
- Department of Galactophore, The Second Affiliated Hospital of Guangzhou University of Traditional Chinese Medicine, Guangzhou, Guangdong Province, China
| | - Q J Chen
- Department of Galactophore, The Second Affiliated Hospital of Guangzhou University of Traditional Chinese Medicine, Guangzhou, Guangdong Province, China
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11
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Duan W, Cai J, Tang XL, Chen QJ, Yang C, He A. Axial Compressive Behaviour of Square through-Beam Joints between CFST Columns and RC Beams with Multi-Layers of Steel Meshes. Materials (Basel) 2020; 13:ma13112482. [PMID: 32486043 PMCID: PMC7321314 DOI: 10.3390/ma13112482] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 05/26/2020] [Accepted: 05/27/2020] [Indexed: 11/28/2022]
Abstract
The axial compressive behaviour of an innovative type of square concrete filled steel tube (CFST) column to reinforced concrete (RC) beam joint was experimentally investigated in this paper. The innovative joint was designed such that (i) the steel tubes of the CFST columns were completely interrupted in the joint region, (ii) the longitudinal reinforcements from the RC beams could easily pass through the joint area and (iii) a reinforcement cage, including a series of reinforcement meshes and radial stirrups, was arranged in the joint area to strengthen the mechanical performance of the joint. A two-stage experimental study was conducted to investigate the behaviour of the innovative joint under axial compression loads, where the first stage of the tests included three full-scale innovative joint specimens subjected to axial compression to assess the feasibility of the joint detailing and propose measures to further improve its axial compressive behaviour, and the second stage of the tests involved 14 innovative joint specimens with the improved detailing to study the effect of the geometric size of the joint, concrete strength and volume ratio of the steel meshes on the bearing strengths of the joints. It was generally found from the experiments that (i) the innovative joint is capable of achieving the design criterion of the ‘strong joint-weak member’ with appropriate designs, and (ii) by decreasing the height factor and increasing the volume ratio of the steel meshes, the axial compressive strengths of the joints significantly increased, while the increase of the length factor is advantageous but limited to the resistances of the joint specimens. Because of the lack of existing design methods for the innovative joints, new design expressions were proposed to calculate the axial compression resistances of the innovative joints subjected to bearing loads, with the local compression effect, the confinement effect provided by the multi-layers of steel meshes and the height effect of concrete considered. It was found that the proposed design methods were capable of providing accurate and safe resistance predictions for the innovative joints.
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Affiliation(s)
- Weining Duan
- School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, China; (W.D.); (J.C.); (Q.-J.C.)
| | - Jian Cai
- School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, China; (W.D.); (J.C.); (Q.-J.C.)
- State Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou 510640, China
| | - Xu-Lin Tang
- Guangzhou Jishi Construction Group Co., Ltd., Guangzhou 510115, China;
| | - Qing-Jun Chen
- School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, China; (W.D.); (J.C.); (Q.-J.C.)
- State Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou 510640, China
| | - Chun Yang
- School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, China; (W.D.); (J.C.); (Q.-J.C.)
- Correspondence:
| | - An He
- School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore;
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12
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Wang CL, Liu S, Chen QJ, Shao ZJ, Wu JF, Fan Z, Wang PG, Zhu ZG, Lan P, Li JG, Zheng YS, He WB, Xu Z, Tang WD, Pang JM, Ban ZH, Yang SQ, Ding WT, Zheng XF, Zhang QL. [Specifications for diagnosis and treatment of non-neonatal tetanus]. Zhonghua Liu Xing Bing Xue Za Zhi 2020; 41:162-166. [PMID: 32164123 DOI: 10.3760/cma.j.issn.0254-6450.2020.02.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Tetanus consists of neonatal tetanus and non-neonatal tetanus. Non-neonatal tetanus remains a serious public health problem, although neonatal tetanus has been eliminated in China since 2012. Non-neonatal tetanus is a potential fatal disease. In the absence of medical intervention, the mortality rate of severe cases is almost 100%. Even with vigorous treatment, the mortality rate is still 30%-50% globally. These specifications aim to regulate non-neonatal tetanus diagnosis and treatment in China, in order to improve medical quality and safety. These specifications introduce the etiology, epidemiology, pathogenesis, clinical manifestations and laboratory tests, diagnosis, differential diagnosis, grading and treatment of non-neonatal tetanus.
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Affiliation(s)
- C L Wang
- Emergency Department/Trauma Center, Peking University People's Hospital, Beijing 100044, China
| | - S Liu
- Emergency Department, First Hospital of Peking University, Beijing 100034, China
| | - Q J Chen
- Emergency Department, Beijing Hepingli Hospital, Beijing 100013, China
| | - Z J Shao
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - J F Wu
- Surgical Department, Shijiazhuang Fifth Hospital, Shijiazhuang 050021, China
| | - Z Fan
- Emergency Department, Peking University Shenzhen Hospital, Shenzhen 518036, China
| | - P G Wang
- Emergency Department, The Affiliate Hospital of Qingdao University, Qingdao 266003, China
| | - Z G Zhu
- Rabies Clinic, Wuhan Center for Disease Control and Prevention, Wuhan 430015, China
| | - P Lan
- Department of Emergency, Lishui Hospital,Zhejiang University School of Medicine, Lishui 323000, China
| | - J G Li
- Emergency Department, Hebei General Hospital, Shijiazhuang 050051, China
| | - Y S Zheng
- Department of Critical Care Medicine, The Second Hospital of Nanjing, Nanjing 210003, China
| | - W B He
- Provincial Clinical Medical College, Fujian Medical University, Fuzhou 350001, China
| | - Z Xu
- Centre of Infectious Diseases, The Fifth Medical Centre, PLA General Hospital,Beijing 100039, China
| | - W D Tang
- Suzhou Road Hospital, Xinjiang Autonomous Region People's Hospital, Department of Orthopedics, Urumqi 830000, China
| | - J M Pang
- Thyroid and Breast Surgery, the Third Hospital of Jinan, Jinan 250132, China
| | - Z H Ban
- Emergency Department, Guangxi International Zhuang Medicine Hospital, Nanning 530200, China
| | - S Q Yang
- Emergency Department, Chongqing Emergency Medical Center/Central Hospital of Chongqing University, Chongqing 400014, China
| | - W T Ding
- Department of General Surgery, Tianjin First Central Hospital, Tianjin 300192, China
| | - X F Zheng
- Department of Orthopedic Surgery, First Affiliated Hospital, Dalian Medical University, Dalian 116011, China
| | - Q L Zhang
- Department of Emergency and Critical Care Medicine, the Jiangxi Chest Hospital, Nanchang 330006, China
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13
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Wang CL, Liu S, Shao ZJ, Yin ZD, Chen QJ, Ma X, Ma C, Wang Q, Wang LH, Deng JK, Li YX, Zhao ZX, Wu D, Wu J, Zhang L, Yao KH, Gao Y, Xie X. [Guidelines for the use of post-traumatic tetanus vaccines and passive immune preparation]. Zhonghua Liu Xing Bing Xue Za Zhi 2020; 41:167-172. [PMID: 32164124 DOI: 10.3760/cma.j.issn.0254-6450.2020.02.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Post-traumatic tetanus is the main type of non-neonatal tetanus. To reduce the incidence and mortality rateof tetanus and guide the primary medical institutions to prevent and control tetanus after trauma, the National Immunization Planning Technical Working Group of the Chinese Center for Disease Control and Prevention has compiled this document in the reference with Position Paper by World Health Organization, and the latest research progress both at home and abroad. The guidelines focus on the basic procedures for the prevention and treatment of post-traumatic tetanus, the application of tetanus vaccines and immune preparation, and pre-exposure immunization in high-risk populations of trauma.
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Affiliation(s)
- C L Wang
- Emergency Department/Trauma Center, Peking University People's Hospital, Beijing 100044, China
| | - S Liu
- Emergency Department, First Hospital of Peking University, Beijing 100034, China
| | - Z J Shao
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Z D Yin
- National Immunization Programme, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - Q J Chen
- Emergency Department, Beijing Hepingli Hospital, Beijing 100013, China
| | - X Ma
- National Institutes for Food and Drug Control, Beijing 102629, China
| | - C Ma
- National Immunization Programme, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - Q Wang
- Chongqing Municipal Center for Disease Control and Prevention, Chongqing 400042, China
| | - L H Wang
- Emergency of Infectious Disease, Beijing Ditan Hospital, Capital Medical University, Beijing 100015, China
| | - J K Deng
- Division of Infectious Diseases, Shenzhen Children's Hospital, Shenzhen 518038, China
| | - Y X Li
- National Immunization Programme, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - Z X Zhao
- Yunnan Provincial Center for Disease Control and Prevention, Kunming 650022, China
| | - D Wu
- National Immunization Programme, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - J Wu
- Beijing Center for Disease Prevention and Control,Beijing 100013, China
| | - L Zhang
- Shandong Center for Disease Control and Prevention, Jinan 250012, China
| | - K H Yao
- Beijing Children's Hospital, Capital Medical University/Beijing Pediatric Research Institute, Beijing 100045, China
| | - Y Gao
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - X Xie
- Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China
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14
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Wang CL, Liu S, Shao ZJ, Yin ZD, Chen QJ, Ma X, Ma C, Wang Q, Wang LH, Deng JK, Li YX, Zhao ZX, Wu D, Wu J, Zhang L, Yao KH, Gao Y, Xie X. [Guidelines for the use of post-traumatic tetanus vaccines and passive immune preparation]. Zhonghua Yu Fang Yi Xue Za Zhi 2019; 53:1212-1217. [PMID: 31795577 DOI: 10.3760/cma.j.issn.0253-9624.2019.12.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Post-traumatic tetanus is the main type of non-neonatal tetanus. To reduce the incidence and mortality rate of tetanus and guide the primary medical institutions to prevent and control tetanus after trauma, National Immunization Planning Technical Working Group of the Chinese Center for Disease Control and Prevention has compiled this document in the reference with Position Paper by World Health Organization, the latest research progress from home and abroad. The guidelines focus on the basic procedures for the prevention and disposition of post-traumatic tetanus, the application of tetanus vaccines and immune preparation, and the pre-exposure immunization in high-risk populations of trauma.
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Affiliation(s)
- C L Wang
- Emergency Department/Trauma Center, Peking University People's Hospital, Beijing 100044, China
| | - S Liu
- Emergency Department, Peking University First Hospital, Beijing 100034, China
| | - Z J Shao
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Z D Yin
- National Immunization Programme, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - Q J Chen
- Emergency Department, Beijing Hepingli Hospital, Beijing 100013, China
| | - X Ma
- Division of Quality Control of DTP vaccine and Toxin, National Institutes for Food and Drug Control, Beijing 102629, China
| | - C Ma
- National Immunization Programme, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - Q Wang
- Division ofImmunization Programme Chongqing Municipal Center for Disease Control and Prevention, Chongqing 400042, China
| | - L H Wang
- Emergency of infectious disease, Beijing Ditan Hospital, Capital Medical University, Beijing 100015, China
| | - J K Deng
- Division of Infectious Diseases, Shenzhen Children's Hospital, Shenzhen 518038, China
| | - Y X Li
- National Immunization Programme, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - Z X Zhao
- Division of Immunization Programme, Yunnan Provincial Center for Disease Control and Prevention, Kunming 650022, China
| | - D Wu
- National Immunization Programme, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - J Wu
- Immuziation department Beijing Municipal Center for Disease Control and Prevention, Beijing 1000013, China
| | - L Zhang
- Division of Immunization Programme Shandong Center for Disease Control and Prevention, Jinan 250012, China
| | - K H Yao
- Laboratory of Microbiology, Beijing Pediatric Research Institute, Beijing Children's Hospital, Capital Medical University, Beijing 100045, China
| | - Y Gao
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - X Xie
- Division of Immunization Programme, Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China
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15
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Wang CL, Liu S, Chen QJ, Shao ZJ, Wu JF, Fan Z, Wang PG, Zhu ZG, Lan P, Li JG, Zheng YS, He WB, Xu Z, Tang WD, Pang JM, Ban ZH, Yang SQ, Ding WT, Zheng XF, Zhang QL. [Specifications for diagnosis and treatment of non-neonatal tetanus]. Zhonghua Yu Fang Yi Xue Za Zhi 2019; 53:1206-1211. [PMID: 31795576 DOI: 10.3760/cma.j.issn.0253-9624.2019.12.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Tetanus consists of neonatal tetanus and non-neonatal tetanus. Although neonatal tetanus in China has been eliminated since 2012, non-neonatal tetanus remains a serious public health problem. Non-neonatal tetanus is a potential fatal disease, and the mortality rate of severe cases is almost 100% in the absence of medical intervention. Even with vigorous treatment, the mortality rate is still 30~50% globally. In order to standardize the diagnosis and treatment of non-neonatal tetanus in China, this specification is hereby formulated. This standard includes etiology, epidemiology, pathogenesis, clinical manifestations, laboratory tests, diagnosis, differential diagnosis, classification, grading and treatment of non-neonatal tetanus.
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Affiliation(s)
- C L Wang
- Emergency Department/Trauma Center, Peking University People's Hospital, Beijing 100044, China
| | - S Liu
- Department of Emergency, Peking University First Hospital, Beijing 100034, China
| | - Q J Chen
- Emergency Department, Beijing Hepingli Hospital, Beijing 100013, China
| | - Z J Shao
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - J F Wu
- Surgical Department, Shijiazhuang Fifth Hospital, Shijiazhuang 050021, China
| | - Z Fan
- Emergency Department, Peking University Shenzhen Hospital, Shenzhen 518036, China
| | - P G Wang
- Emergency Department, The Affiliate Hospital of Qingdao University, Qingdao 266003, China
| | - Z G Zhu
- Wuhan Center for Disease Control and Prevention, Wuhan 430015, China
| | - P Lan
- Department of Emergency, Lishui Hospital, Zhejiang University School of Medicine, Lishui 323000, China
| | - J G Li
- Emergency Department, Hebe general hospital, Shijiazhuang 050051, China
| | - Y S Zheng
- Department of Critical Care Medicine, The Second Hospital of Nanjing, Nanjing 210003 China
| | - W B He
- Provincial clinical medical college, Fujian medical university, Fuzhou 350001, China
| | - Z Xu
- The centre of infectious diseases, the Fifth medical centre, PLA general hospital, Beijing100039, China
| | - W D Tang
- Suzhou Road Hospital, Xinjiang Autonomous Region People's Hospital, Department of Orthopedics, Urumqi 830000, China
| | - J M Pang
- Thyroid and breast surgery, The thirdhospital of Jinan, Jinan 250132, China
| | - Z H Ban
- Emergency Department, Guangxi International Zhuang Medicine Hospital, Nanning 530200, China
| | - S Q Yang
- Emergency Department, Chongqing Emergency Medical Center/Central Hospital of Chongqing University, Chongqing 400014, China
| | - W T Ding
- Department of General Surgery, Tianjin First Central Hospital, Tianjin 300192, China
| | - X F Zheng
- Department of Orthopedic Surgery, First Affiliated Hospital, Dalian Medical University, Dalian 116011, China
| | - Q L Zhang
- Department of Emergency and Critical Care Medicine, The Jiangxi chest hospital, Nanchang 330006, China
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16
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Yin WW, Wang CL, Chen QL, Dong GM, Li YH, Zhu WY, Liu S, Chen QJ, Lyu XJ, Zhu ZG, Tao XY, Li Y, Mou D, Wang XJ. [Expert consensus on rabies exposure prophylaxis]. Zhonghua Yu Fang Yi Xue Za Zhi 2019; 53:668-679. [PMID: 31288336 DOI: 10.3760/cma.j.issn.0253-9624.2019.07.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Rabies is a zoonotic infectious disease caused by lyssavirus and characterized by central nervous system symptoms. The fatality rate of rabies is almost 100%. About 59 000 cases die of rabies worldwide every year, mainly in Asia and Africa. China is an epidemic country of rabies. Grade II and III exposures are the main types of rabies exposures in China. Standardized post-exposure prophylaxis (PEP) can prevent rabies almost 100%. Human Rabies Vaccine Technical Working Group, National Immunization Advisory Committee and invited experts reached an expert consensus on PEP by referring to the World Health Organization's position paper on rabies vaccine in 2018 and related research progress in recent.
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Affiliation(s)
- W W Yin
- Infectious Disease Management Department, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - C L Wang
- Emergency Department/Trauma Center, Peking University People's Hospital, Beijing 100044, China
| | - Q L Chen
- Infectious Disease Management Department, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - G M Dong
- Department of Arboviruses and Rabies, National Institute for Food and Drug Control, Beijing 102629, China
| | - Y H Li
- Department of Arboviruses and Rabies, National Institute for Food and Drug Control, Beijing 102629, China
| | - W Y Zhu
- Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - S Liu
- Emergency Department, First Hospital of Peking University, Beijing 100034, China
| | - Q J Chen
- Emergency Department, Beijing Hepingli Hospital, Beijing 100013, China
| | - X J Lyu
- Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Z G Zhu
- Rabies Clinic, Wuhan Center for Disease Control and Prevention, Wuhan 430015, China
| | - X Y Tao
- Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Y Li
- Infectious Disease Management Department, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - D Mou
- Infectious Disease Management Department, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - X J Wang
- Institute for Viral Disease Control and Prevention, Shandong Center for Disease Control and Prevention, Jinan 250014, China
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17
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Yin WW, Wang CL, Chen QL, Dong GM, Li YH, Zhu WY, Liu S, Chen QJ, Lyu XJ, Zhu ZG, Tao XY, Li Y, Mou D, Wang XJ. [Expert consensus on rabies exposure prophylaxis]. Zhonghua Yu Fang Yi Xue Za Zhi 2019. [PMID: 31288336 DOI: 10.3760/cma.j.issn.0253-9624.2019.07.00] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Rabies is a zoonotic infectious disease caused by lyssavirus and characterized by central nervous system symptoms. The fatality rate of rabies is almost 100%. About 59 000 cases die of rabies worldwide every year, mainly in Asia and Africa. China is an epidemic country of rabies. Grade II and III exposures are the main types of rabies exposures in China. Standardized post-exposure prophylaxis (PEP) can prevent rabies almost 100%. Human Rabies Vaccine Technical Working Group, National Immunization Advisory Committee and invited experts reached an expert consensus on PEP by referring to the World Health Organization's position paper on rabies vaccine in 2018 and related research progress in recent.
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Affiliation(s)
- W W Yin
- Infectious Disease Management Department, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - C L Wang
- Emergency Department/Trauma Center, Peking University People's Hospital, Beijing 100044, China
| | - Q L Chen
- Infectious Disease Management Department, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - G M Dong
- Department of Arboviruses and Rabies, National Institute for Food and Drug Control, Beijing 102629, China
| | - Y H Li
- Department of Arboviruses and Rabies, National Institute for Food and Drug Control, Beijing 102629, China
| | - W Y Zhu
- Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - S Liu
- Emergency Department, First Hospital of Peking University, Beijing 100034, China
| | - Q J Chen
- Emergency Department, Beijing Hepingli Hospital, Beijing 100013, China
| | - X J Lyu
- Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Z G Zhu
- Rabies Clinic, Wuhan Center for Disease Control and Prevention, Wuhan 430015, China
| | - X Y Tao
- Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Y Li
- Infectious Disease Management Department, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - D Mou
- Infectious Disease Management Department, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - X J Wang
- Institute for Viral Disease Control and Prevention, Shandong Center for Disease Control and Prevention, Jinan 250014, China
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18
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Jiang KM, Qian J, Luo ZJ, Chen QJ. [Case-control study on calcaneal locking plates and tension band with Kirschner's nail for the treatment of patellar fracture]. Zhongguo Gu Shang 2019; 31:889-893. [PMID: 30373338 DOI: 10.3969/j.issn.1003-0034.2018.10.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Indexed: 11/18/2022]
Abstract
OBJECTIVE To compare clinical effect between calcaneal locking plates and tension band with Kirschner's nail for the treatment of patellar fracture. METHODS From December 2009 to December 2017, 58 patients with patellar fracture were divided into plate group(calcaneal locking plate) and tension band(tension band with Kirschner's nail) by surgical method. There were 29 patients in plate group, including 14 males and 15 females, aged from 18 to 72 years old with an average of (36.9±11.5) years old; while there were 29 patients in tension band group, including 17 males and 12 females, aged from 20 to 70 years old with an average of (37.7±14.4) years old. Operative time, blood loss, fracture healing time, follow-up time and postoperative complications were compared between two groups. Böstman score was applied to compared therapeutic effects at 12 months after operation. RESULTS There was no significant differences in following-up time between plate group(18.4±2.6) months and tension band group(17.8±3.6) months. According to Böstman score at 12 months after operation, plate group was (28.5±4.6) and (25.7±4.3) in tension band group, and had statistical difference between two group(t=2.395, P=0.020). Twenty-six patients got excellent results, 3 moderate in plate group; while 14 patients got excellent results, 11 moderate and 4 poor in tension band group, and had obviously meaning between two groups(χ²=12.17 P=0.02). There were no significant differences in operative time(t=1.978, P=0.53), blood loss(t=1.740, P=0.87), fracture healing time(t=0.65, P=0.517) and postoperative complications(χ²=0.268, P=0.604) between two groups. CONCLUSIONS Calcaneal locking plates for patellar fracture has advantages of more wide range of clinical application, more reliable fixation, and more satisfactory surgical curative method, its clinical effects is better than that of tension band with kirschner nail.
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Affiliation(s)
- Kai-Ming Jiang
- Department of Orthopaedics, Zhejiang Quhua Hospital, Quzhou 324004, Zhejiang, China;
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19
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Zhang HL, Wei JK, Wang QH, Yang R, Gao XJ, Sang YX, Cai PP, Zhang GQ, Chen QJ. Lignocellulose utilization and bacterial communities of millet straw based mushroom (Agaricus bisporus) production. Sci Rep 2019; 9:1151. [PMID: 30718596 PMCID: PMC6362146 DOI: 10.1038/s41598-018-37681-6] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Accepted: 12/10/2018] [Indexed: 12/17/2022] Open
Abstract
Agaricus bisporus is in general cultivated on wheat and rice straw in China. However, millet straw is a potential alternative resource for Agaricus bisporus cultivation, but this has hardly been studied. In the present study, the feasibility of millet straw based mushroom production was analyzed by three successive trials. Mature compost demonstrated high quality with total nitrogen, pH, and C/N ratio of 2.0%, 7.5, and 18:1 respectively, which was suitable for mushroom mycelia growth. During composting, 47–50% of cellulose, 63–65% of hemicellulose, and 8–17% lignin were degraded, while 22–27% of cellulose, 14–16% of hemicellulose, and 15–21% of lignin were consumed by A. bisporus mycelia during cultivation. The highest FPUase and CMCase were observed during mushroom flushes. Endo-xylanase had the key role in hemicellulose degradation with high enzyme activity during cultivation stages. Laccase participated in lignin degradation with the highest enzyme activity in Pinning stage followed by a sharp decline at the first flush. Yield was up to 20 kg/m2, as this is similar to growth on wheat straw, this shows that millet straw is an effective resource for mushroom cultivation. Actinobacteria, Bacteroidetes, Chloroflexi, Deinococcus-Thermus, Firmicutes, and Proteobacteria were the dominant phyla, based on 16S rRNA gene sequencing during composting. The key environmental factors dominating bacterial communities of the samples were determined to be pH value, cellulose content, and hemicellulose content for prewetting and premixed phase of basic mixture (P0); moisture content for phase I (PI); and nitrogen content, lignin content, and ash content for phase II (PII), respectively.
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Affiliation(s)
- Hao-Lin Zhang
- Beijing Key Laboratory for Agricultural Application and New Technique, College of Plant Science and Technology, Beijing University of Agriculture, Beijing, 102206, China.,College of Forestry and Horticulture, Xinjiang Agricultural University, Urumqi, 830052, China
| | - Jin-Kang Wei
- Beijing Agricultural Technology Extension Station, Beijing, 100029, China
| | - Qing-Hui Wang
- Chengde Xingchunhe Agricultural Co. Ltd., Chengde, 067000, China
| | - Rui Yang
- Beijing Key Laboratory for Agricultural Application and New Technique, College of Plant Science and Technology, Beijing University of Agriculture, Beijing, 102206, China
| | - Xiao-Jing Gao
- Beijing Key Laboratory for Agricultural Application and New Technique, College of Plant Science and Technology, Beijing University of Agriculture, Beijing, 102206, China
| | - Yu-Xi Sang
- Beijing Key Laboratory for Agricultural Application and New Technique, College of Plant Science and Technology, Beijing University of Agriculture, Beijing, 102206, China
| | - Pan-Pan Cai
- Beijing Key Laboratory for Agricultural Application and New Technique, College of Plant Science and Technology, Beijing University of Agriculture, Beijing, 102206, China
| | - Guo-Qing Zhang
- Key Laboratory of Urban Agriculture (North) of Ministry of Agriculture, College of Biological Science and Engineering, Beijing University of Agriculture, Beijing, 102206, China.
| | - Qing-Jun Chen
- Beijing Key Laboratory for Agricultural Application and New Technique, College of Plant Science and Technology, Beijing University of Agriculture, Beijing, 102206, China.
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Dong J, Wang Y, Chai WR, Hong QQ, Wang NL, Sun LH, Long H, Wang L, Tian H, Lyu QF, Lu XF, Chen QJ, Kuang YP. The pregnancy outcome of progestin-primed ovarian stimulation using 4 versus 10 mg of medroxyprogesterone acetate per day in infertile women undergoing in vitro
fertilisation: a randomised controlled trial. BJOG 2017; 124:1048-1055. [PMID: 28276192 DOI: 10.1111/1471-0528.14622] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/01/2017] [Indexed: 11/27/2022]
Affiliation(s)
- J Dong
- Department of Assisted Reproduction; Shanghai Ninth People's Hospital; Shanghai Jiaotong University School of Medicine; Shanghai China
| | - Y Wang
- Department of Assisted Reproduction; Shanghai Ninth People's Hospital; Shanghai Jiaotong University School of Medicine; Shanghai China
| | - WR Chai
- Department of Assisted Reproduction; Shanghai Ninth People's Hospital; Shanghai Jiaotong University School of Medicine; Shanghai China
| | - QQ Hong
- Department of Assisted Reproduction; Shanghai Ninth People's Hospital; Shanghai Jiaotong University School of Medicine; Shanghai China
| | - NL Wang
- Department of Assisted Reproduction; Shanghai Ninth People's Hospital; Shanghai Jiaotong University School of Medicine; Shanghai China
| | - LH Sun
- Department of Assisted Reproduction; Shanghai Ninth People's Hospital; Shanghai Jiaotong University School of Medicine; Shanghai China
| | - H Long
- Department of Assisted Reproduction; Shanghai Ninth People's Hospital; Shanghai Jiaotong University School of Medicine; Shanghai China
| | - L Wang
- Department of Assisted Reproduction; Shanghai Ninth People's Hospital; Shanghai Jiaotong University School of Medicine; Shanghai China
| | - H Tian
- Department of Assisted Reproduction; Shanghai Ninth People's Hospital; Shanghai Jiaotong University School of Medicine; Shanghai China
| | - QF Lyu
- Department of Assisted Reproduction; Shanghai Ninth People's Hospital; Shanghai Jiaotong University School of Medicine; Shanghai China
| | - XF Lu
- Department of Assisted Reproduction; Shanghai Ninth People's Hospital; Shanghai Jiaotong University School of Medicine; Shanghai China
| | - QJ Chen
- Department of Assisted Reproduction; Shanghai Ninth People's Hospital; Shanghai Jiaotong University School of Medicine; Shanghai China
| | - YP Kuang
- Department of Assisted Reproduction; Shanghai Ninth People's Hospital; Shanghai Jiaotong University School of Medicine; Shanghai China
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Wang SS, Ning YJ, Wang SN, Zhang J, Zhang GQ, Chen QJ. Purification, characterization, and cloning of an extracellular laccase with potent dye decolorizing ability from white rot fungus Cerrena unicolor GSM-01. Int J Biol Macromol 2017; 95:920-927. [DOI: 10.1016/j.ijbiomac.2016.10.079] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Revised: 10/22/2016] [Accepted: 10/24/2016] [Indexed: 01/24/2023]
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22
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Zhang Q, Zhang LL, Xiang TX, Guan YX, Liu SZ, Chen QJ, Zhang Q. [A study on artificial liver system combined with 131I in treatment of hyperthyroidism complicated by liver failure]. Zhonghua Gan Zang Bing Za Zhi 2016; 24:778-782. [PMID: 27938565 DOI: 10.3760/cma.j.issn.1007-3418.2016.10.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Affiliation(s)
- Q Zhang
- Department of Nuclear Medicine, the First Affiliated Hospital of Nanchang University, Nanchang 330006, China
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23
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Wang Y, Zhang XN, Xie WH, Zheng YX, Cao JP, Cao PR, Chen QJ, Li X, Sun CD. The Growth of SGC-7901 Tumor Xenografts Was Suppressed by Chinese Bayberry Anthocyanin Extract through Upregulating KLF6 Gene Expression. Nutrients 2016; 8:nu8100599. [PMID: 27690088 PMCID: PMC5083987 DOI: 10.3390/nu8100599] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Revised: 09/03/2016] [Accepted: 09/20/2016] [Indexed: 01/12/2023] Open
Abstract
To investigate the antitumor effect of anthocyanins extracted from Chinese bayberry fruit (Myrica rubra Sieb. et Zucc.), a nude mouse tumor xenograft model was established. Treatments with C3G (cyanidin-3-glucoside, an anthocyanin) significantly suppressed the growth of SGC-7901 tumor xenografts in a dose-dependent manner. Immunohistochemical staining showed a significant increase in p21 expression, indicating that the cell cycle of tumor xenografts was inhibited. qPCR screening showed that C3G treatment up-regulated the expression of the KLF6 gene, which is an important tumor suppressor gene inactivated in many human cancers. Western blot showed that C3G treatments markedly increased KLF6 and p21 protein levels, inhibited CDK4 and Cyclin D1 expression, but did not notably change the expression of p53. These results indicated that KLF6 up-regulates p21 in a p53-independent manner and significantly reduces tumor proliferation. This study provides important information for the possible mechanism of C3G-induced antitumor activity against gastric adenocarcinoma in vivo.
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Affiliation(s)
- Yue Wang
- Laboratory of Fruit Quality Biology/The State Agriculture Ministry Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Zhejiang University, Zijingang Campus, Hangzhou 310058, China.
| | - Xia-Nan Zhang
- Laboratory of Fruit Quality Biology/The State Agriculture Ministry Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Zhejiang University, Zijingang Campus, Hangzhou 310058, China.
| | - Wen-Hua Xie
- Laboratory of Fruit Quality Biology/The State Agriculture Ministry Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Zhejiang University, Zijingang Campus, Hangzhou 310058, China.
| | - Yi-Xiong Zheng
- Department of Surgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009, China.
| | - Jin-Ping Cao
- Taizhou Academy of Agricultural Sciences, Linhai 317000, China.
| | - Pei-Rang Cao
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China.
| | - Qing-Jun Chen
- National Light Industry Food Quality Inspection Hangzhou Station, Hangzhou 310009, China.
| | - Xian Li
- Laboratory of Fruit Quality Biology/The State Agriculture Ministry Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Zhejiang University, Zijingang Campus, Hangzhou 310058, China.
| | - Chong-de Sun
- Laboratory of Fruit Quality Biology/The State Agriculture Ministry Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Zhejiang University, Zijingang Campus, Hangzhou 310058, China.
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Yue ZJ, Chen QJ, Wang XL. Thermoelectric signals of state transition in polycrystalline SmB6. J Phys Condens Matter 2016; 28:355801. [PMID: 27365362 DOI: 10.1088/0953-8984/28/35/355801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Topological Kondo insulator SmB6 has attracted quite a lot of attention from the condensed matter physics community. A number of unique electronic properties, including low-temperature resistivity anomaly, 1D electronic transport and 2D Fermi surfaces have been observed in SmB6. Here, we report on thermoelectric transport properties of polycrystalline SmB6 over a broad temperature from 300 to 2 K. An anomalous transition in the temperature-dependent Seebeck coefficient S from S(T) [Formula: see text] T (-1) to S(T) [Formula: see text] T was observed around 12 K. Such a transition demonstrates a transition of conductivity from 3D metallic bulk states to 2D metallic surface states with insulating bulk states. Our results suggest that the thermotransport measurements could be used for the characterization of state transition in topological insulators.
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Affiliation(s)
- Z J Yue
- Institute for Superconducting and Electronic Materials, Faculty of Engineering, University of Wollongong, North Wollongong, NSW 2500, Australia
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25
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Guan YX, Chen Q, Wan SH, Huang JS, Yang XQ, Pan LJ, Zhang QI, Zhang Q, Ou YJ, Peng XW, Liu SZ, Chen QJ, Lou J. Effect of different time phases of radionuclide hepatobiliary scintigraphy on the differential diagnosis of congenital biliary atresia. Genet Mol Res 2015; 14:3862-8. [PMID: 25966156 DOI: 10.4238/2015.april.22.15] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
To investigate the value and essentiality of 6- and 24-h delay hepatobiliary scintigraphy in the differential diagnosis of biliary atresia (BA), we retrospectively analyzed 197 infants (121 boys/76 girls; age range, 3-205 days; average age, 63.9 days) admitted to Jiangxi Children's Hospital for persistent jaundice (> 2 weeks), hepatosplenomegaly, and abnormal liver function. After receiving anti-inflammatory treatment and cholagogic pre-treatment for 7-10 days without a clear diagnosis, the children underwent 99mTc-labeled diethylacetanilide-iminodiacetic acid hepatobiliary scintigraphy. BA and infant hepatitis syndrome were diagnosed in 107 and 90 infants, respectively after laparoscopic cholangiography, surgical pathology, or 6-month clinical follow-up. The diagnostic efficiencies of hepatobiliary scintigraphy for BA were evaluated within 50 min and at 6 and 24 h. The areas under the receiver operating characteristic curves within 50 min, at 6 and 24 h were 0.696, 0.829 , and 0.779 , suggesting poor diagnostic value within 50 min, but improvement at 6 and 24 h. The compliance rate of 6- and 24-h imaging for BA diagnosis was 89.34% (176/197; paired chi-square test Kappa value, 0.77; P > 0.05), signifying high consistency. The diagnostic efficiency values of 6-/24-h imaging for BA diagnosis were sensitivity (90.65/89.72%), specificity (74.44/78.89%), accuracy (83.25/84.77%), positive and negative predictive values (80.83/83.48% and 87.01/86.59%), with no significant difference (P > 0.05). To provide optimal treatment in early BA, the- 6-h hepatobiliary scintigraphy had practical value, especially when combined with tomographic or dynamic imaging; 24-h delay imaging was deemed unnecessary because it was not significantly superior.
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Affiliation(s)
- Y X Guan
- The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Q Chen
- Children's Hospital of Jiangxi Province, Jiangxi, China
| | - S H Wan
- Children's Hospital of Jiangxi Province, Jiangxi, China
| | - J S Huang
- Children's Hospital of Jiangxi Province, Jiangxi, China
| | - X Q Yang
- The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - L J Pan
- The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Q I Zhang
- The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Q Zhang
- The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Y J Ou
- The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - X W Peng
- Children's Hospital of Jiangxi Province, Jiangxi, China
| | - S Z Liu
- The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Q J Chen
- The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - J Lou
- The First Affiliated Hospital of Nanchang University, Nanchang, China
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Meng M, Gao X, Han LJ, Li XY, Wu D, Li HZ, Chen QJ. Correlation analysis between starch properties and single nucleotide polymorphisms of waxy genes in common rye (Secale cereale L.). Genet Mol Res 2014; 13:2574-89. [PMID: 24446340 DOI: 10.4238/2014.january.14.7] [Citation(s) in RCA: 3] [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: 11/03/2022]
Abstract
To understand the relationships between single nucleotide polymorphisms (SNPs) in the waxy gene and starch parameters in common rye, we performed sequence characterization, enzyme activity testing, amylopectin/amylose ratio evaluation, starch property testing, and correlation analysis. Specific primers were used to clone waxy from 20 rye cultivars. Sequence analysis showed that waxy was 2852 bp, including 11 exons, and sequence similarity across the 20 cultivars was over 98%. The Waxy protein showed >95% similarity with those from wheat, rice, and barley, the closest genetic relationship being with wheat Wx-A type. Waxy had multiple SNPs, most of which were located in the exons. Amino acid variants were found to be mainly distributed in the catalytic domain in an imbalanced state. Multi-factor correlation analysis revealed significant correlation among starch pasting parameters in rye flour. The Waxy protein activity was significantly negatively correlated with the amylose content and amylopectin/amylose ratio. However, pasting parameters, Waxy enzyme activity, and amylopectin/amylose content ratio were not correlated. The correlation of SNPs, the key catalytic site of Waxy, with starch parameters and enzyme activity suggested that both starch pasting parameters and Waxy protein activity were influenced by No. 260 amino acid (aa). Further, the 141 and 152 aa loci were found in the enzyme-catalyzing domain of Waxy. Interestingly, Waxy enzyme activity was also influenced by the 363 aa locus in the pliable region. These results provide important theoretical regarding the high-throughput quality identification of noodle starch, functional studies, directional selection, and molecular markers of wheat Wx subunits.
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Affiliation(s)
- M Meng
- College of Agronomy, Northwest A&F University, Yangling, China
| | - X Gao
- College of Agronomy, Northwest A&F University, Yangling, China
| | - L J Han
- College of Agronomy, Northwest A&F University, Yangling, China
| | - X Y Li
- College of Agronomy, Northwest A&F University, Yangling, China
| | - D Wu
- College of Agronomy, Northwest A&F University, Yangling, China
| | - H Z Li
- College of Agronomy, Northwest A&F University, Yangling, China
| | - Q J Chen
- College of Agronomy, Northwest A&F University, Yangling, China
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Sun J, Chen QJ, Zhu MJ, Wang HX, Zhang GQ. An extracellular laccase with antiproliferative activity from the sanghuang mushroom Inonotus baumii. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.molcatb.2013.10.004] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Xu LJ, Chen QJ, Wang HX, Zhang GQ. Purification and characterization of a ribonuclease from the wild edible mushroom Armillaria luteo-virens. Indian J Biochem Biophys 2013; 50:196-201. [PMID: 23898482] [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: 06/02/2023]
Abstract
A 15 kDa ribonuclease (RNase) was purified from dried fruiting bodies of the wild edible mushroom Armillaria luteo-virens. The simple 4-step purification protocol involved ion-exchange chromatography on DEAE-cellulose, affinity chromatography on Affi-gel blue gel, ion-exchange chromatography on SP-Sepharose and a final gel filtration by FPLC on Superdex-75. The RNase was unadsorbed on Affi-gel blue gel, but adsorbed on DEAE-cellulose and SP-Sepharose. The N-terminal amino acid sequence of purified RNase was AGVQYKLTILLV, which showed low sequence homology to those of previously reported RNases. The optimal pH and temperature of the enzyme were very close to 4.0 and 70 degrees C, respectively. The enzyme showed considerably high ribonucleolytic activity and broad specificity towards polyhomoribonucleotides, with a specificity of poly(U) > poly(C) > poly (G) > poly(A). The ribonucleolytic activities towards poly(U), poly(C), poly(G) and poly(A) were 279.5, 184.1, 69.9 and 52.3 U/mg, respectively.
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Affiliation(s)
- Li-Jing Xu
- State Key Laboratory for Agrobiotechnology,d Department of Microbiology, China Agricultural University, Beijing 100193, China
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29
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Zhang GQ, Wu YY, Ng TB, Chen QJ, Wang HX. A phytase characterized by relatively high pH tolerance and thermostability from the shiitake mushroom Lentinus edodes. Biomed Res Int 2013; 2013:540239. [PMID: 23586045 PMCID: PMC3618926 DOI: 10.1155/2013/540239] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/25/2012] [Revised: 01/31/2013] [Accepted: 02/25/2013] [Indexed: 12/03/2022]
Abstract
A monomeric phytase with a molecular mass of 14 kDa was acquired from fresh fruiting bodies of the shiitake mushroom Lentinus edodes. The isolation procedure involved chromatography on DEAE-cellulose, CM-cellulose, Q-Sepharose, Affi-gel blue gel, and a final fast protein liquid chromatography-gel filtration on Superdex 75. The purified phytase demonstrated the unique N-terminal amino acid sequence DPKRTDQVN, which exhibited no sequence similarity with those of other phytases previously reported. It expressed its maximal activity at pH 5.0 and 37 °C. Phytase activity manifested less than 20% change in activity over the pH range of 3.0-9.0, considerable thermostability with more than 60% residual activity at 70 °C, and about 40% residual activity at 95°C. It displayed a wide substrate specificity on a variety of phosphorylated compounds with the following ranking: ATP > fructose-6-phosphate > AMP > glucose-6-phosphate > ADP > sodium phytate > β -glycerophosphate. The phytase activity was moderately stimulated by Ca(2+), but inhibited by Al(3+), Mn(2+), Zn(2+), and Cu(2+) at a tested concentration of 5 mM.
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Affiliation(s)
- Guo-Qing Zhang
- College of Biosciences and Biotechnology, Beijing University of Agriculture, Beijing 102206, China
| | - Ying-Ying Wu
- State Key Laboratory of Agro-Biotechnology and MOA Key Laboratory of Soil Microbiology, College of Biological Sciences, China Agricultural University, Beijing 100193, China
| | - Tzi-Bun Ng
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong
| | - Qing-Jun Chen
- College of Biosciences and Biotechnology, Beijing University of Agriculture, Beijing 102206, China
| | - He-Xiang Wang
- State Key Laboratory of Agro-Biotechnology and MOA Key Laboratory of Soil Microbiology, College of Biological Sciences, China Agricultural University, Beijing 100193, China
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Zhang GQ, Chen QJ, Sun J, Wang HX, Han CH. Purification and characterization of a novel acid phosphatase from the split gill mushroom Schizophyllum commune. J Basic Microbiol 2013; 53:868-75. [PMID: 23322529 DOI: 10.1002/jobm.201200218] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [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: 04/04/2012] [Accepted: 08/09/2012] [Indexed: 11/10/2022]
Abstract
A monomeric acid phosphatase (ACP) with a molecular mass of 72.5 kDa was purified from fresh fruiting bodies of cultured Schizophyllum commune mushroom. The isolation procedure entailed ion exchange chromatography on DEAE-cellulose, CM-cellulose, and Q-sepharose, and gel filtration by fast protein liquid chromatography on Superdex 75. It demonstrated a unique N-terminal amino acid sequence of NAPWAQIDEV, which exhibited 60% amino acid identity to that of S. commune hypothetical histidine ACP based on its genome sequence, but less than 30% amino acid identity to that of other fungal ACPs previously reported. The ACP exhibited an optimum temperature at 50 °C, an optimum pH at pH 4.6, and was considerably stable at a pH range of 4.0 to 9.0, and a temperature range of 20-40 °C. The Km of the purified enzyme for ρ-nitrophenyl phosphate (ρNPP) was 0.248 mM and the Vmax was 9.093 × 10(-3) μM/min. ACP activity was strongly inhibited by Al(3+) and Fe(3+) , but enhanced by Co(2+) , Mg(2+) , and Ca(2+) at a concentration of 0.5 mM.
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Affiliation(s)
- Guo-Qing Zhang
- Key Laboratory of Urban Agriculture (North) of Ministry of Agriculture, Beijing University of Agriculture, Beijing, China
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Zhang GQ, Chen QJ, Wang HX, Ng TB. A laccase with inhibitory activity against HIV-1 reverse transcriptase from the mycorrhizal fungus Lepiota ventriosospora. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.molcatb.2012.08.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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32
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Zhang GQ, Tian T, Liu YP, Wang HX, Chen QJ. A laccase with anti-proliferative activity against tumor cells from a white root fungus Abortiporus biennis. Process Biochem 2011. [DOI: 10.1016/j.procbio.2011.09.020] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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33
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Cui YH, Zhu GQ, Chen QJ, Wang YF, Yang MM, Song YX, Wang JG, Cao BY. A new approach for cloning hLIF cDNA from genomic DNA isolated from the oral mucous membrane. Genet Mol Res 2011; 10:3455-62. [PMID: 22180065 DOI: 10.4238/2011.november.25.2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Complementary DNA (cDNA) is valuable for investigating protein structure and function in the study of life science, but it is difficult to obtain by traditional reverse transcription. We employed a novel strategy to clone human leukemia inhibitory factor (hLIF) gene cDNA from genomic DNA, which was directly isolated from the mucous membrane of mouth. The hLIF sequence, which is 609 bp long and is composed of three exons, can be acquired within a few hours by amplifying each exon and splicing all of them using overlap-PCR. This new approach developed is simple, time- and cost-effective, without RNA preparation or cDNA synthesis, and is not limited to the specific tissues for a particular gene and the expression level of the gene.
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Affiliation(s)
- Y H Cui
- College of Animal Science and Technology, Northwest Agriculture and Forestry University, Yangling, PR China
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An XP, Hou JX, Li G, Song YX, Wang JG, Chen QJ, Cui YH, Wang YF, Cao BY. Polymorphism identification in the goat KITLG gene and association analysis with litter size. Anim Genet 2011; 43:104-7. [PMID: 22221032 DOI: 10.1111/j.1365-2052.2011.02219.x] [Citation(s) in RCA: 17] [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: 11/28/2022]
Abstract
This study reported the analysis of KIT ligand (KITLG) gene polymorphisms in 681 goats of three breeds: Xinong Saanen (SN), Guanzhong (GZ), and Boer (BG). In addition, the study identified three allelic variants: g.769T>C and g.817G>T in SN and GZ breeds, and g.9760G>C in the three goat breeds. The g.769T>C and g.817G>T loci were closely linked (r(2) > 0.33). All the single nucleotide polymorphism loci were in Hardy-Weinberg disequilibrium (P < 0.05). Significant associations were found for litter size with all three loci. Therefore, these results suggest that the KITLG gene is a strong candidate gene affecting litter size in goats.
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Affiliation(s)
- X P An
- College of Animal Science and Technology, Northwest A&F University, No. 22 Xinong Road, Yangling, Shaanxi, China
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Zhang WJ, Zhang QY, Chen QJ, Qian Q, Yang ZM, Qiu JR, Huang P, Wang YS. Enhanced 2.0 microm emission and gain coefficient of transparent glass ceramic containing BaF2: Ho3+,Tm3+ nanocrystals. Opt Express 2009; 17:20952-20958. [PMID: 19997333 DOI: 10.1364/oe.17.020952] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Transparent glass ceramic containing BaF(2):Ho(3+),Tm(3+) nanocrystals has been prepared by melt quenching and subsequent thermal treatment. The precipitation of BaF(2) nanocrystals was confirmed by X-ray diffraction and high-resolution transmission electron microscopy. Intense 2.0 microm fluorescence originating from Ho(3+): (5)I(7) --> (5)I(8) transition was achieved upon excitation with 808 nm laser diode. A large ratio of forward Tm(3+) --> Ho(3+) energy transfer constant to that of backward process indicated high efficient energy transfer from Tm(3+)((3)F(4)) to Ho(3+)((5)I(7)), benefited from the reduced ionic distances of Tm(3+)-Tm(3+) and Tm(3+)-Ho(3+) pairs and low phonon energy environment with the incorporation of rare-earth ions into the precipitated BaF(2) nanocrystals. The results indicate that glass ceramic is a promising candidate material for 2.0 microm laser.
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Affiliation(s)
- W J Zhang
- Key Lab of Specially Functional Materials of Ministry of Education, Institute of Optical Communication Materials, South China University of Technology, Guangzhou 510641, P. R. China
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Wang XL, Fu BQ, Yang SJ, Wu XP, Cui GZ, Liu MF, Zhao Y, Yu YL, Liu XY, Deng HK, Chen QJ, Liu MY. Trichinella spiralis--a potential anti-tumor agent. Vet Parasitol 2008; 159:249-52. [PMID: 19041180 DOI: 10.1016/j.vetpar.2008.10.052] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Murine forestomach carcinoma (cell line MFC), ascitic hepatoma (cell line H22) and sarcoma (cell line S180) solid tumor models were used to test the anti-tumor effect of Trichinella spiralis in vivo. Mice previously infected by oral administration of 400 viable T. spiralis larvae per mouse for 7 days were grafted with various solid tumor cell lines. Other groups of tumor-bearing mice were given caudal vein injection of crude extracts of adult and newborn larvae at 17.5, 35.0 or 70.0 mg kg(-1). These treatments to inhibit tumor growth were dose-dependent (p<0.05). The anti-proliferative activity of crude T. spiralis extract was examined in vitro at 0.035, 0.070 or 0.140 mg ml(-1) using MFC, H22, S180, human chronic myeloid leukemia cell line (K562) and hepatoma cell line (H7402), tumor cell proliferation in vitro was measured by methyl thiazolium stain and was inhibited in dose-dependent manner (p<0.05). At the same doses, crude T. spiralis extracts induced apoptosis of K562 and H7402 as detected by DNA fragmentation. Cell cycle analysis indicated that crude T. spiralis extracts, at 0.140 mg ml(-1), arrested the cell cycle of K562 and H7402 in G1 or S phase. It is concluded that T. spiralis contains anti-tumor active agent.
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Affiliation(s)
- X L Wang
- Department of Pharmacology, Bethune Basic Medicine Faculty, Key Laboratory of Zoonosis, Ministry of Education, Institute of Zoonosis, Jilin University, 5333 Xian Road, Changchun, PR China
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Chen QJ, Cao HF, Zhang DS, Yang YQ, Qin WB, Hu CL, Hao P. [Nitric oxide synthetase and carbon monoxide decrease in the penile corpus cavernous of hyper homocysteine rats]. Zhonghua Nan Ke Xue 2008; 14:701-703. [PMID: 18817341] [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: 05/26/2023]
Abstract
OBJECTIVE To detect the levels of nitric oxide synthetase (NOS) and carbon monoxide (CO) in the penile corpus cavernous of adult male Wistar rats with high homocysteine (Hhcy) and to explore the relationship of NOS and CO levels with erectile dysfunction. METHODS Twenty Wistar rats were equally and randomly divided into a control and an Hhcy group and fed on normal diet and normal diet with 3.0% methionine respectively. Four weeks later, the levels of NOS and CO in the penile corpus cavernous were detected by ultraviolet spectrophotometry and that of serum homocysteine by the cycle enzyme method. RESULTS Compared with the control group, the levels of NOS and CO in the penile corpus cavernous were significantly lower in the Hhcy group, (6.45 +/- 1.12) nmol/(g x min) vs (10.77 +/- 0.60) nmol/(g x min) and (10.60 +/- 0.92) micromol/L vs (13.36 +/- 0.44) micromol/L, while that of homocysteine was significantly higher, (22.32 +/- 1.65) micromol/L) vs (4.90 +/- 1.73) micromol/L. CONCLUSION Four-week diet with methionine can cause Hhcy and significantly decreased levels of NOS and CO in the penile corpus cavernous in Wistar rats. Hhcy is an independent risk factor of erectile dysfunction.
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Affiliation(s)
- Qing-Jun Chen
- Department of Urology, First Hospital Affiliated to Jiamusi University, Jiamusi, Heilongjiang 154003, China.
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Wu R, Sui ZW, Zhang HB, Chen QJ, Liang WW, Yang KL, Xiong ZL, Liu ZW, Chen Z, Xu DP. Characterization of a pathogenic H9N2 influenza A virus isolated from central China in 2007. Arch Virol 2008; 153:1549-55. [PMID: 18574551 DOI: 10.1007/s00705-008-0139-1] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2008] [Accepted: 05/26/2008] [Indexed: 10/21/2022]
Abstract
The entire genome of the A/Chicken/Hubei/C1/2007 (H9N2) virus, isolated from central China in 2007, was completely sequenced and phylogenetically analyzed. Phylogenetic analysis demonstrated that A/Chicken/Hubei/C1/2007 (H9N2) virus represents multiple reassortant lineages, with genes coming from the early mainland China strain (Ck/Beijing/1/94), an H9N2 virus with special genotype (Ck/shanghai/F/98) and other lineages from poultry in Asia. Infection studies indicated that A/Chicken/Hubei/C1/2007 (H9N2) virus replicated efficiently in MDCK cells and in BALB/c mice. The H9N2 virus also replicated to high titers in chicken respiratory tracts and caused overt clinical signs in chickens. Our results suggest that attention should be paid to the natural evolution of H9N2 influenza viruses and to the control of H9N2 influenza viruses in animals.
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Affiliation(s)
- R Wu
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Hubei, Wuhan, China
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Liu MY, Wang XL, Fu BQ, Li CY, Wu XP, Le Rhun D, Chen QJ, Boireau P. Identification of stage-specifically expressed genes ofTrichinella spiralisby suppression subtractive hybridization. Parasitology 2007; 134:1443-55. [PMID: 17475093 DOI: 10.1017/s0031182007002855] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
SUMMARYNewborn larvae (NBL) and adult (Ad) stage-specifically expressed genes or members of gene families ofTrichinella spiraliswere identified by suppression subtractive hybridization (SSH)†. Six cDNA clones were identified as NBL stage-specific, including 1 member of theT. spiralisgene family encoding glutamic acid-rich proteins, 2 clones encoding novel serine proteases, 2 closely related clones encoding proteins that are members of a deoxyribonuclease II (DNase II)-like family and 1 clone with no similarity to known genes. Four stage-specific clones encoding homologues of retinoid X receptor, caveolin, C2H2 type zinc finger protein and a putative protein with no homology to known sequences were obtained from 3-day-old adult worms. One gene specifically up-regulated in the 5-day-old adult worms encoding a putative cuticle collagen was also identified.
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Affiliation(s)
- M Y Liu
- Key Laboratory of Zoonoses, Ministry of Education, Institute of Zoonoses, Jilin University, 5333 Xian Road, 130062 Changchun, P. R. China
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Fu BQ, Liu MY, Kapel CMO, Meng XP, Lu Q, Wu XP, Chen QJ, Boireau P. Cloning and analysis of a novel cDNA from Trichinella spiralis encoding a protein with an FYVE zinc finger domain. Vet Parasitol 2005; 132:27-30. [PMID: 16023292 DOI: 10.1016/j.vetpar.2005.05.059] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
A cDNA library from Trichinella spiralis adults 3 days post-infection was screened with a cDNA probe, designated T 54, derived from a newborn larvae subtracted cDNA library. Sequence analysis showed that the positive clone contained a cDNA insert of 1464 bp in length with a single open reading frame of 1290 bp, which encoded a protein of 429 amino acids with a putative molecular mass of 49.9 k Da. Database analysis predicted the deduced protein had a leucine zipper motif and an FYVE zinc finger domain. The recombinant fusion protein was expressed and rabbit anti-recombinant protein sera reacted with a single peptide migrating at approximately 55 k Da in crude worm extract from muscle larvae, adults and newborn larvae stages.
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Affiliation(s)
- B Q Fu
- Veterinary College, JILIN University, 5333 Xian Road, 130062 Changchun, PR China
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Fu BQ, Liu MY, Kapel CMO, Meng XP, Lu Q, Wu XP, Chen QJ, Boireau P. Molecular cloning of a cDNA encoding a putative cuticle collagen of Trichinella spiralis. Vet Parasitol 2005; 132:31-5. [PMID: 15985335 DOI: 10.1016/j.vetpar.2005.05.020] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
A 5-day-old adult stage-specific cDNA fragment from Trichinella spiralis was identified by suppression subtractive hybridization and was used as a probe to screen the cDNA library. The cDNA sequence coding for a putative T. spiralis cuticle collagen was isolated. The cDNA encoded an open reading frame of 343 amino acid residues with molecular weight of 35.1 k Da. The deduced protein contained an N-terminal signal peptide, a nematode cuticle collagen N-terminal domain and a collagen triple helix repeat domain. Searches in GenBank using BLASTP showed up to 47% identity to cuticle collagens from other nematodes. Southern blot analysis of genomic DNA indicated this gene was present as a single copy in T. spiralis genome.
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Affiliation(s)
- B Q Fu
- Veterinary College, JILIN University, 5333 Xian Road, 130062 Changchun, PR China
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42
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Engsig MT, Chen QJ, Vu TH, Pedersen AC, Therkidsen B, Lund LR, Henriksen K, Lenhard T, Foged NT, Werb Z, Delaissé JM. Matrix metalloproteinase 9 and vascular endothelial growth factor are essential for osteoclast recruitment into developing long bones. J Cell Biol 2000; 151:879-89. [PMID: 11076971 PMCID: PMC2169432 DOI: 10.1083/jcb.151.4.879] [Citation(s) in RCA: 459] [Impact Index Per Article: 19.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
Bone development requires the recruitment of osteoclast precursors from surrounding mesenchyme, thereby allowing the key events of bone growth such as marrow cavity formation, capillary invasion, and matrix remodeling. We demonstrate that mice deficient in gelatinase B/matrix metalloproteinase (MMP)-9 exhibit a delay in osteoclast recruitment. Histological analysis and specialized invasion and bone resorption models show that MMP-9 is specifically required for the invasion of osteoclasts and endothelial cells into the discontinuously mineralized hypertrophic cartilage that fills the core of the diaphysis. However, MMPs other than MMP-9 are required for the passage of the cells through unmineralized type I collagen of the nascent bone collar, and play a role in resorption of mineralized matrix. MMP-9 stimulates the solubilization of unmineralized cartilage by MMP-13, a collagenase highly expressed in hypertrophic cartilage before osteoclast invasion. Hypertrophic cartilage also expresses vascular endothelial growth factor (VEGF), which binds to extracellular matrix and is made bioavailable by MMP-9 (Bergers, G., R. Brekken, G. McMahon, T.H. Vu, T. Itoh, K. Tamaki, K. Tanzawa, P. Thorpe, S. Itohara, Z. Werb, and D. Hanahan. 2000. Nat. Cell Biol. 2:737-744). We show that VEGF is a chemoattractant for osteoclasts. Moreover, invasion of osteoclasts into the hypertrophic cartilage requires VEGF because it is inhibited by blocking VEGF function. These observations identify specific actions of MMP-9 and VEGF that are critical for early bone development.
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Affiliation(s)
- M T Engsig
- OSTEOPRO A/S and Center for Clinical and Basic Research, DK-2750 Herlev/Ballerup, Denmark.
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Chen QJ, Yoshida H, Takimoto H, Ninomiya T, Ohtsu M, Kimura G, Nomoto K. Ineffective control of murine cytomegalovirus by IE1-specific cytotoxic T lymphocytes during protracted infection in the lung. Arch Virol 2000; 145:1291-304. [PMID: 10963338 DOI: 10.1007/s007050070091] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Interstitial pneumonia caused by cytomegalovirus (CMV) is a fatal disease in immunocompromised patients. In order to examine the defense mechanism against the virus in the lung, we employed an intratracheal infection model in susceptible mice. In mice infected intratracheally with murine CMV, a protracted infection was observed where infectious virus was detected up to 21 days of infection. During this prolonged infection, massive accumulation in the lung of CD8+ T cells with activated phenotypes occurred and these CD8+ T cells showed direct ex vivo cytolytic activity against target cells pulsed with the nonamer peptide derived from IE1 protein of the virus, which has been shown to be the dominant epitope recognized by most of virus-specific CTL. Moreover, adoptive transfer of in vitro induced IE1 peptide-specific CTL line showed no anti-virus effect in the lung, although they were effective in the spleen. Hence, there is reason to assume the IE1-specific CTL induced in vivo or in vitro plays limited roles during the prolonged infection in the lung.
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Affiliation(s)
- Q J Chen
- Department of Immunology, Medical Institute of Bioregulation, Kyushu University, Fukuoka, Japan
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Liu FQ, Zhao CX, Chen QJ. [Forensic pathology analysis of factors in causing trouble by schizophrenics]. Fa Yi Xue Za Zhi 1999; 15:222-3, 255. [PMID: 12536439] [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
We analyzed the data of different schizophrenics. The data of those who caused trouble were compared to those who did not cause trouble and to data of other mental patients. It was found that schizophrenics had a higher rate to cause trouble and commit murder. Schizophrenics who made trouble got worse therapeutic efficacy. They seldom got married and were not supported by their family. It is suggest that keeping strict supervision and providing good treatment to schizophrenics be positive ways to secure our society.
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Affiliation(s)
- F Q Liu
- Qingdao Intermediate People's Court, Qingdong 266071, P. R. China
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Satoh T, Chen QJ, Sasaki G, Yokozeki H, Katayama I, Nishioka K. Cyclophosphamide-induced blood and tissue eosinophilia in contact sensitivity: mechanism of hapten-induced eosinophil recruitment into the skin. Eur J Immunol 1997; 27:85-91. [PMID: 9022002 DOI: 10.1002/eji.1830270113] [Citation(s) in RCA: 21] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The mechanism leading to selective production and accumulation of eosinophils in certain allergic skin diseases is unknown. Cyclophosphamide treatment (150 mg/kg) of BALB/c mice 48 h before sensitization with picryl chloride (PCl) resulted in striking blood and tissue eosinophilia, maximal at 13 days. Blood eosinophilia was not induced by the sensitization with oxazolone and 2,4-dinitrofluorobenzene. Challenge with 1 % PCl, but not croton oil caused preferential eosinophil accumulation into the dermis, which was associated with the enhanced expression of vascular cell adhesion molecule 1 (VCAM-1) on endothelial cells. Intravenous administration of anti-VCAM-1 monoclonal antibody abrogated eosinophil infiltration. In this murine model, we examined the role of several cytokines, including chemokines in inducing selective tissue eosinophilia in vivo. Local administration of antibodies against interleukin (IL)-1beta, IL-4, tumor necrosis factor (TNF)-alpha, and RANTES, but not against IL-5 before challenge inhibited hapten-induced eosinophil recruitment. Intradermal injection of recombinant (r)IL-1beta, rIL-4, rTNF-alpha, rRANTES, and rMIP-1alpha induced marked eosinophil accumulation. Nonetheless, intradermal rIL-5 was not a chemoattractant for eosinophils in vivo. Our findings suggest that IL-1beta, IL-4, TNF-alpha, and RANTES contribute to the selective accumulation of eosinophils in contact sensitivity reaction. Although circulating IL-5 can activate eosinophils and prolong their survival, locally secreted IL-5 is not crucial for inducing eosinophil recruitment into the skin.
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Affiliation(s)
- T Satoh
- Department of Dermatology, School of Medicine, Tokyo Medical and Dental University, Japan
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Abstract
Immunopathologic aspects of bullous skin diseases were studied in paraffin sections of thirty-three skin biopsy specimens utilizing monoclonal antibodies directed against histiocytes, helper/inducer T lymphocytes, and Langerhans cells in skin lesions. Laboratory examinations revealed that either more or fewer of the standard number of helper/inducer T lymphocytes (UCHL1+) were observed in the upper dermis in 84.8% of the cases examined, particularly in the various forms of pemphigus; histiocytes (MAC387+) were also found to occur in the upper dermis in 45.5% of the cases and blisters in 27.3% of the cases, particularly in pemphigus erythematosus and dermatitis herpetifomis. In 54.5% of all the cases, both UCHL1+ and MAC387+ cell infiltrates predominated in the upper dermis. These findings suggest that a cell-mediated immune response may also be important in the pathogenesis of bullous skin diseases. It may be possible that antigen from keratinocytes can produce ETAF, and that IL1 activating T lymphocytes and histiocytes also produce IL1 activating T cells, particularly helper/inducer T cells. Such activities would further promote the increase of B cell function and immunoglobulin synthesis.
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Affiliation(s)
- M X Zou
- Department of Dermatology, China-Japan Friendship Hospital, Beijing
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Yang SX, Chen QJ, Wang MD, Wu S, Dong YC. Studies on derivatives of 2,3-dihydro-4H-1,3,2-benzoxazaphosphorine. Synthesis and structure analysis of 2,3-disubstituted-2,3-dihydro-4H-1,3,2-benzoxazaphosphorin-4-one -(thio ne)-2-sulfide(oxide). Sci Sin B 1984; 27:1131-41. [PMID: 6533782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
A series of novel organocyclophosphorus compounds including twenty-three 2,3-disubstituted-2,3-dihydro-4H-1,3,2-benzoxazaphosphorin-4-one-2 -sulfide (compounds I) and three 2,3-disubstituted-2,3-dihydro-4H-1,3,2-benzoxazaphosphorin-4-th ion e-2-oxide (compounds II) have been synthesized. Their structures were determined by IR, UV, 1HNMR, X-ray diffraction and elemental analysis. Each of compounds I showed a strong absorption between 1290-1319 cm-1 in the IR spectrum. Comprehensive studies of the spectral data and experimental results indicated that this strong characteristic absorption is different from that of the P = O linkage and thus could be considered as a result of the stretching vibration of (unsaturated C)-N single bond. In the course of synthesis of the compounds, an abnormal product (Formula: see text) is frequently formed as an isomer of the expected product I (Formula: see text). However, by suitable choice of condensation conditions, either of the isomers could be made predominantly in yield and be readily isolated from the other by recrystallizing for several times from appropriate solvent. Data for the melting point, IR, UV and 1HNMR spectra of three pairs of the isomers are given, and primary analyses of the spectra are made as well.
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