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Zhang P, Zhuang J, Yu J, Guan Y, Zhu X, Yang F. Disinfectant-Assisted Preparation of Hierarchical ZSM-5 Zeolite with Excellent Catalytic Stabilities in Propane Aromatization. Nanomaterials (Basel) 2024; 14:802. [PMID: 38727396 PMCID: PMC11085285 DOI: 10.3390/nano14090802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Revised: 04/23/2024] [Accepted: 05/04/2024] [Indexed: 05/12/2024]
Abstract
A series of quaternary ammonium or phosphonium salts were applied as zeolite growth modifiers in the synthesis of hierarchical ZSM-5 zeolite. The results showed that the use of methyltriphenylphosphonium bromide (MTBBP) could yield nano-sized hierarchical ZSM-5 zeolite with a "rice crust" morphology feature, which demonstrates a better catalytic performance than other disinfect candidates. It was confirmed that the addition of MTBBP did not cause discernable adverse effects on the microstructures or acidities of ZSM-5, but it led to the creation of abundant meso- to marco- pores as a result of aligned tiny particle aggregations. Moreover, the generation of the special morphology was believed to be a result of the coordination and competition between MTBBP and Na+ cations. The as-synthesized hierarchical zeolite was loaded with Zn and utilized in the propane aromatization reaction, which displayed a prolonged lifetime (1430 min vs. 290 min compared with conventional ZSM-5) and an enhanced total turnover number that is four folds of the traditional one, owing to the attenuated hydride transfer reaction and slow coking rate. This work provides a new method to alter the morphological properties of zeolites with low-cost disinfectants, which is of great potential for industrial applications.
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Affiliation(s)
- Peng Zhang
- Engineering Research Center of Large-Scale Reactor Engineering and Technology, East China University of Science & Technology, Ministry of Education, Shanghai 200237, China; (P.Z.)
| | - Jianguo Zhuang
- Engineering Research Center of Large-Scale Reactor Engineering and Technology, East China University of Science & Technology, Ministry of Education, Shanghai 200237, China; (P.Z.)
| | - Jisheng Yu
- Engineering Research Center of Large-Scale Reactor Engineering and Technology, East China University of Science & Technology, Ministry of Education, Shanghai 200237, China; (P.Z.)
| | - Yingjie Guan
- Engineering Research Center of Large-Scale Reactor Engineering and Technology, East China University of Science & Technology, Ministry of Education, Shanghai 200237, China; (P.Z.)
| | - Xuedong Zhu
- Engineering Research Center of Large-Scale Reactor Engineering and Technology, East China University of Science & Technology, Ministry of Education, Shanghai 200237, China; (P.Z.)
| | - Fan Yang
- State Key Laboratory of Green Chemical Engineering and Industrial Catalysis, Sinopec Shanghai Research Institute of Petrochemical Technology Co., Ltd., Shanghai 201208, China
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Ren N, Ai Y, Yue N, Cui M, Huang R, Qi W, Su R. Shear-Induced Fabrication of Cellulose Nanofibril/Liquid Metal Nanocomposite Films for Flexible Electromagnetic Interference Shielding and Thermal Management. ACS Appl Mater Interfaces 2024; 16:17904-17917. [PMID: 38511485 DOI: 10.1021/acsami.4c01220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/22/2024]
Abstract
To address electromagnetic interference (EMI) pollution in modern society, the development of ultrathin, high-performance, and highly stable EMI shielding materials is highly desired. Liquid metal (LM) based conductive materials have received enormous amounts of attention. However, the processing approach of LM/polymer composites represents great challenges due to the high surface tension and cohesive energy of LMs. In this study, we develop a universal one-step fabrication strategy to directly process composites containing LMs and cellulose nanofibrils (CNFs) and successfully fabricate the ultrathin, flexible, and stable EMI shielding films with an average specific EMI shielding efficiency (EMI SE) value of 429 dB/mm and small thickness of only 70 μm in the wide frequency range of 8.2-18 GHz. In addition, the resulting films also exhibit excellent mechanical performance and flexibility, which endow the film with the ability to withstand repeated folding, bending, and folding into complex shapes without producing cracks or fractures. Besides, the resulting films display excellent thermal conductivity with a λ of 4.90 W/(m K) and an α of 3.17 mm2/s. Thus, the presented approach shows great potential in fabricating advanced materials for EMI shielding applications.
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Affiliation(s)
- Ning Ren
- State Key Laboratory of Chemical Engineering, Tianjin Key Laboratory of Membrane Science and Desalination Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P. R. China
| | - Yusen Ai
- State Key Laboratory of Chemical Engineering, Tianjin Key Laboratory of Membrane Science and Desalination Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P. R. China
| | - Ning Yue
- State Key Laboratory of Chemical Engineering, Tianjin Key Laboratory of Membrane Science and Desalination Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P. R. China
| | - Mei Cui
- State Key Laboratory of Chemical Engineering, Tianjin Key Laboratory of Membrane Science and Desalination Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P. R. China
| | - Renliang Huang
- Tianjin Key Laboratory for Marine Environmental Research and Service, School of Marine Science and Technology, Tianjin University, Tianjin 300072, P. R. China
- Zhejiang Institute of Tianjin University, Ningbo, Zhejiang 315201, P. R. China
| | - Wei Qi
- State Key Laboratory of Chemical Engineering, Tianjin Key Laboratory of Membrane Science and Desalination Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P. R. China
| | - Rongxin Su
- State Key Laboratory of Chemical Engineering, Tianjin Key Laboratory of Membrane Science and Desalination Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P. R. China
- Tianjin Key Laboratory for Marine Environmental Research and Service, School of Marine Science and Technology, Tianjin University, Tianjin 300072, P. R. China
- Zhejiang Institute of Tianjin University, Ningbo, Zhejiang 315201, P. R. China
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Rodesch PA, Si-Mohamed SA, Lesaint J, Douek PC, Rit S. Image quality improvement of a one-step spectral CT reconstruction on a prototype photon-counting scanner. Phys Med Biol 2023; 69:015005. [PMID: 38041870 DOI: 10.1088/1361-6560/ad11a3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Accepted: 12/01/2023] [Indexed: 12/04/2023]
Abstract
Objective. X-ray spectral computed tomography (CT) allows for material decomposition (MD). This study compared a one-step material decomposition MD algorithm with a two-step reconstruction MD algorithm using acquisitions of a prototype CT scanner with a photon-counting detector (PCD).Approach. MD and CT reconstruction may be done in two successive steps, i.e. decompose the data in material sinograms which are then reconstructed in material CT images, or jointly in a one-step algorithm. The one-step algorithm reconstructed material CT images by maximizing their Poisson log-likelihood in the projection domain with a spatial regularization in the image domain. The two-step algorithm maximized first the Poisson log-likelihood without regularization to decompose the data in material sinograms. These sinograms were then reconstructed into material CT images by least squares minimization, with the same spatial regularization as the one step algorithm. A phantom simulating the CT angiography clinical task was scanned and the data used to measure noise and spatial resolution properties. Low dose carotid CT angiographies of 4 patients were also reconstructed with both algorithms and analyzed by a radiologist. The image quality and diagnostic clinical task were evaluated with a clinical score.Main results. The phantom data processing demonstrated that the one-step algorithm had a better spatial resolution at the same noise level or a decreased noise value at matching spatial resolution. Regularization parameters leading to a fair comparison were selected for the patient data reconstruction. On the patient images, the one-step images received higher scores compared to the two-step algorithm for image quality and diagnostic.Significance. Both phantom and patient data demonstrated how a one-step algorithm improves spectral CT image quality over the implemented two-step algorithm but requires a longer computation time. At a low radiation dose, the one-step algorithm presented good to excellent clinical scores for all the spectral CT images.
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Affiliation(s)
- Pierre-Antoine Rodesch
- Univ. Lyon, INSA-Lyon, UCBLyon 1, UJM-Saint Etienne, CNRS, Inserm, CREATIS UMR5220, U1294, F-69373 Lyon, France
| | - Salim A Si-Mohamed
- Univ. Lyon, INSA-Lyon, UCBLyon 1, UJM-Saint Etienne, CNRS, Inserm, CREATIS UMR5220, U1294, F-69373 Lyon, France
- Department of Radiology, Louis Pradel Hospital, Hospices Civils de Lyon, Bron, France
| | - Jérôme Lesaint
- Univ. Lyon, INSA-Lyon, UCBLyon 1, UJM-Saint Etienne, CNRS, Inserm, CREATIS UMR5220, U1294, F-69373 Lyon, France
| | - Philippe C Douek
- Univ. Lyon, INSA-Lyon, UCBLyon 1, UJM-Saint Etienne, CNRS, Inserm, CREATIS UMR5220, U1294, F-69373 Lyon, France
- Department of Radiology, Louis Pradel Hospital, Hospices Civils de Lyon, Bron, France
| | - Simon Rit
- Univ. Lyon, INSA-Lyon, UCBLyon 1, UJM-Saint Etienne, CNRS, Inserm, CREATIS UMR5220, U1294, F-69373 Lyon, France
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Gupta NK, Huda NA, Pal DK. A comparative study between one step dilatation and serial dilatation technique in percutaneous nephrolithotomy. Urologia 2023:3915603231202839. [PMID: 37776272 DOI: 10.1177/03915603231202839] [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] [Indexed: 10/02/2023]
Abstract
BACKGROUND Percutaneous nephrolithotomy (PCNL) is the first line treatment for treating kidney stones larger than 2 cm size with the advantages of lower morbidity and faster post-operative recovery. Creation of a nephrostomy access is one of the major steps of PCNL. It can be done either by single-step dilatation or by multi-step serial dilatation technique. OBJECTIVES To compare the outcome and evaluate the efficacy of percutaneous nephrolithotomy done by single-step versus serial dilatation technique with specific reference to access time, fluoroscopy time, rate of blood transfusion, length of hospital stay (post-op) and complication rate. METHODS It was a prospective study with a sample size of 100 where 50 patients underwent one-step dilatation and other 50 patients underwent serial-dilatation technique. These patients were analysed on the basis of their demographic profile, renal access time, total fluoroscopy time for access, post-operative haematuria, duration of post-operative hospital stay and complications after operative procedure. Data was analysed and reported using statistical tools. RESULTS Demographic profile of the patients and stone characteristics were equivalent between two groups. Mean access tract dilatation time, mean total fluoroscopy time were significantly less in one of the groups. Requirement of blood transfusion, and post-operative complications rate were not significant between two groups. CONCLUSION Both methods are safe and effective for tract dilatation. However, PCNL can be successfully performed by one-step dilatation with the added advantages of lesser time of renal access, lesser radiation exposure. Blood loss and hospital stay after operative procedure were not statistically significant between two groups.
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Affiliation(s)
- Naveen Kumar Gupta
- Department of Urology, IPGME&R and SSKM Hospital, Kolkata, West Bengal, India
| | - Noushim Akram Huda
- Department of Urology, IPGME&R and SSKM Hospital, Kolkata, West Bengal, India
| | - Dilip Kumar Pal
- Department of Urology, IPGME&R and SSKM Hospital, Kolkata, West Bengal, India
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Zhou FZ, Xie LH, Yu XH, Yang XQ, Yin SW. One-Step Generation of O/W/O Double Pickering Emulsions Utilizing Biocompatible Gliadin/Ethyl Cellulose Complex Particles as the Exclusive Stabilizer. J Agric Food Chem 2023; 71:12289-12299. [PMID: 37548190 DOI: 10.1021/acs.jafc.3c03856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/08/2023]
Abstract
Double emulsions hold great potential for various applications due to their compartmentalized internal structures. However, achieving their long-term physical stability remains a challenging task. Here, we present a simple one-step method for producing stable oil-in-water-in-oil (O/W/O) double emulsions using biocompatible gliadin/ethyl cellulose complex particles as the sole stabilizer. The resulting O/W/O systems serve as effective platforms for encapsulating enzymes and as templates for synthesizing porous microspheres. We investigated the impact of particle concentration and water fraction on the properties of Pickering O/W/O emulsions. Our results demonstrate that the number and volume of inner oil droplets increased proportionally with both the water fraction and particle concentration after a 60-day storage period. Moreover, the catalytic reaction rate of the encapsulated lipase within the double emulsion exhibited a significant acceleration, achieving a substrate conversion of 80.9% within 15 min. Remarkably, the encapsulated enzyme showed excellent recyclability, enabling up to 10 cycles of reuse. Additionally, by utilizing the O/W/O systems as templates, we successfully obtained porous microspheres whose size can be controlled by the outer water droplet. These findings have significant implications for the future design of Pickering complex emulsion-based systems, opening avenues for extensive applications in pharmaceuticals, food, cosmetics, material synthesis, and (bio)catalysis.
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Affiliation(s)
- Fu-Zhen Zhou
- Research and Development Center of Food Proteins, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, Department of Food Science and Technology, South China University of Technology, Guangzhou 510641, P. R. China
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, P. R. China
| | - Li-Hua Xie
- Crops Research Institute, Guangdong Academy of Agricultural Sciences, Guangdong Provincial Key Laboratory of Crops Genetics & Improvement, Guangzhou 510640, P. R. China
| | - Xin-Hao Yu
- Research and Development Center of Food Proteins, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, Department of Food Science and Technology, South China University of Technology, Guangzhou 510641, P. R. China
| | - Xiao-Quan Yang
- Research and Development Center of Food Proteins, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, Department of Food Science and Technology, South China University of Technology, Guangzhou 510641, P. R. China
| | - Shou-Wei Yin
- Research and Development Center of Food Proteins, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, Department of Food Science and Technology, South China University of Technology, Guangzhou 510641, P. R. China
- Sino-Singapore International Joint Research Institute, Guangzhou 510641, P. R. China
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Sun H, Chen F, Chen R, Li J, Guo L, Liu Y, Shen F, Yang Q, Zhang Z, Ren Q, Bao Z. Customizing Metal-Organic Frameworks by Lego-Brick Strategy for One-Step Purification of Ethylene from a Quaternary Gas Mixture. Small 2023; 19:e2208182. [PMID: 36843316 DOI: 10.1002/smll.202208182] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 02/11/2023] [Indexed: 05/25/2023]
Abstract
One-step purification of ethylene (C2 H4 ) from a quaternary gas mixture of C2 H6 /C2 H4 /C2 H2 /CO2 by adsorption is a promising separation process, yet developing adsorbents that synergistically capture various gas impurities remains challenging. Herein, a Lego-brick strategy is proposed to customize pore chemistry in a unified framework material. The ethane-selective MOF platform is further modified with customized binding sites to specifically adsorb acetylene and carbon dioxide, thus one-step purification of C2 H4 with high productivity of polymer-grade product (134 mol kg-1 ) is achieved on the assembly of porous coordination polymer-2,5-furandicarboxylic acid (PCP-FDCA) and PCP-5-aminoisophthalic acid (IPA-NH2 ). Computational studies verify that the low-polarity surface of this MOFs-based platform provides a delicate environment for C2 H6 recognition, and the specific binding sites (FDCA and IPA-NH2 ) exhibit favorable trapping of C2 H2 and CO2 via CHδ+ ···Oδ- and Cδ+ ···Nδ- electrostatic interactions, respectively. The proposed Lego-brick strategy to customize binding sites within the MOFs structure provides new ideas for the design of adsorbents for compounded separation tasks.
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Affiliation(s)
- Haoran Sun
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, P. R. China
| | - Fuqiang Chen
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, P. R. China
| | - Rundao Chen
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, P. R. China
| | - Jiaqi Li
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, P. R. China
| | - Lidong Guo
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, P. R. China
| | - Ying Liu
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, P. R. China
| | - Fuxing Shen
- Institute of Zhejiang University-Quzhou, 99 Zheda Road, Kecheng District, Quzhou, 324000, P. R. China
| | - Qiwei Yang
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, P. R. China
- Institute of Zhejiang University-Quzhou, 99 Zheda Road, Kecheng District, Quzhou, 324000, P. R. China
| | - Zhiguo Zhang
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, P. R. China
- Institute of Zhejiang University-Quzhou, 99 Zheda Road, Kecheng District, Quzhou, 324000, P. R. China
| | - Qilong Ren
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, P. R. China
- Institute of Zhejiang University-Quzhou, 99 Zheda Road, Kecheng District, Quzhou, 324000, P. R. China
| | - Zongbi Bao
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, P. R. China
- Institute of Zhejiang University-Quzhou, 99 Zheda Road, Kecheng District, Quzhou, 324000, P. R. China
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Inotsume M, Chiba T, Matsushima T, Kurimoto R, Nakajima M, Kato T, Shishido K, Liu L, Kawakami K, Asahara H. One-step generation of mice with gene editing by Tol2 transposon-dependent gRNA delivery. FEBS Lett 2023; 597:975-984. [PMID: 36876986 DOI: 10.1002/1873-3468.14605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 02/09/2023] [Accepted: 02/16/2023] [Indexed: 03/07/2023]
Abstract
Conditional knockout mice are valuable tools for examining the functions of targeted genes in a time- and space-specific manner. Here, we generated gene-edited mice by using the Tol2 transposon to introduce guide RNA (gRNA) into fertilized eggs obtained by crossing LSL (loxP-stop-loxP)-CRISPR-associated 9 (Cas9) mice, which express Cas9 in a Cre-dependent manner, with CAG-CreER mice. Transposase mRNA and plasmid DNA, which contained a gRNA sequence for the gene encoding tyrosinase flanked by the transposase recognition sequence, were injected together into fertilized eggs. As a result, the transcribed gRNA cleaved the target genome in a Cas9-dependent manner. Using this method, it is possible to generate conditional genome-edited mice more easily in a shorter period of time.
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Affiliation(s)
- Maiko Inotsume
- Department of Systems BioMedicine, Tokyo Medical and Dental University, Bunkyo-ku, Japan
| | - Tomoki Chiba
- Department of Systems BioMedicine, Tokyo Medical and Dental University, Bunkyo-ku, Japan
| | - Takahide Matsushima
- Department of Systems BioMedicine, Tokyo Medical and Dental University, Bunkyo-ku, Japan
| | - Ryota Kurimoto
- Department of Systems BioMedicine, Tokyo Medical and Dental University, Bunkyo-ku, Japan
| | - Mitsuyo Nakajima
- Department of Systems BioMedicine, Tokyo Medical and Dental University, Bunkyo-ku, Japan
| | - Tomomi Kato
- Department of Systems BioMedicine, Tokyo Medical and Dental University, Bunkyo-ku, Japan
| | - Kana Shishido
- Department of Systems BioMedicine, Tokyo Medical and Dental University, Bunkyo-ku, Japan
| | - Lin Liu
- Department of Systems BioMedicine, Tokyo Medical and Dental University, Bunkyo-ku, Japan
| | - Koichi Kawakami
- Division of Molecular and Developmental Biology, National Institute of Genetics, Mishima, Japan
| | - Hiroshi Asahara
- Department of Systems BioMedicine, Tokyo Medical and Dental University, Bunkyo-ku, Japan
- Department of Molecular and Experimental Medicine, The Scripps Research Institute, La Jolla, California, USA
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Evereklioglu C, Sener H, Polat OA, Gulmez Sevim D, Arda H, Horozoglu F. One-step repair of a large congenital upper eyelid coloboma using a bilamellar graft in an infant: a case report and literature review. Orbit 2023:1-5. [PMID: 36939396 DOI: 10.1080/01676830.2023.2180519] [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] [Indexed: 02/24/2023]
Abstract
Large congenital lid colobomas are traditionally repaired using 1- or 2-step vascularized flap-graft combinations. However, visual axis occlusion for weeks is a severe problem in small children and recent reports suggest that the flap pedicle does not contribute to blood perfusion. A "one-step" substitute for large lid defects has recently been reported in animals and humans, demonstrating the viability of a bilamellar autograft alone. We present an alternative "one-step" reconstructive approach in a 6-month-old infant who had a centrally-located large upper eyelid defect resulting from a congenital coloboma. The free full-thickness bilamellar autograft was harvested from the contralateral upper eyelid. The follow-up time was 48 months. Cosmetic and functional results were good, the bilamellar graft survived, and there was no graft ischemia, necrosis, or rejection. The boy developed madarosis, lid notching, and mild contour irregularity but needed no reoperation since the parent was satisfied with the surgical result. A free bilamellar eyelid autograft seems to be an outstanding alternative to both "conventional 2-step" and "modern 1-step" options for the reconstruction of large colobomatous eyelid openings, especially in young infants who cannot tolerate visual axis blockage. It is an easy, practical, fast, and effective technique that also saves cost in health care.
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Affiliation(s)
- Cem Evereklioglu
- Department of Ophthalmology, Division of Pediatric Ophthalmology & Strabismus and Oculoplastic, Orbital and Lacrimal Surgery, Erciyes University Medical Faculty, Kayseri, Türkiye
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Mei C, Zhang Y, Pan L, Dong B, Chen X, Gao Q, Xu H, Xu W, Fang H, Liu S, McAlinden C, Paschalis EI, Wang Q, Yang M, Huang J, Yu AY. A One-Step Electrochemical Aptasensor Based on Signal Amplification of Metallo Nanoenzyme Particles for Vascular Endothelial Growth Factor. Front Bioeng Biotechnol 2022; 10:850412. [PMID: 35615476 PMCID: PMC9124786 DOI: 10.3389/fbioe.2022.850412] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Accepted: 03/21/2022] [Indexed: 11/13/2022] Open
Abstract
In this study, a one-step electrochemical aptasensor was developed to detect the biomarker vascular endothelial growth factor (VEGF), an important protein in the pathogenesis of many retinal diseases, including age-related macular degeneration, diabetic retinopathy, retinopathy of prematurity, and retinal vein occlusion. The aptamer has a good affinity and can rapidly identify and capture VEGF based on its unique structure. We designed a VEGF aptasensor based on the aptamer recognition and complex metallo nanoenzyme particles as an electron exchange center and bridge between capture DNA and electrode. The aptamers maintained the hairpin structure to avoid nonspecific surface adsorption and expose the capture sequence outwards when the target was inexistent. Conversely, the aptamers opened the hairpin structure to release space to accomplish binding between VEGF and DNA, resulting in increased impedance. The performance of the electrochemical aptasensor is detected by electrochemical impedance spectroscopy (EIS). The limit of detection by EIS was as low as 8.2 pg ml-1, and the linear range was 10 pg ml-1-1 μg ml-1. The electrochemical aptasensor also showed high specificity and reproducibility.
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Affiliation(s)
- ChenYang Mei
- Eye Hospital and School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou, China
| | - Yuanyuan Zhang
- Eye Hospital and School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou, China
| | - Luting Pan
- Eye Hospital and School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou, China
| | - Bin Dong
- Eye Hospital and School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou, China
| | - Xingwei Chen
- Eye Hospital and School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou, China
| | - Qingyi Gao
- Eye Hospital and School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou, China
| | - Hang Xu
- Eye Hospital and School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou, China
| | - Wenjin Xu
- Eye Hospital and School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou, China
| | - Hui Fang
- Eye Hospital and School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou, China
| | - Siyu Liu
- Eye Hospital and School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou, China
| | - Colm McAlinden
- Department of Ophthalmology, Singleton Hospital, Swansea Bay University Health Board, Swansea, United Kingdom
| | - Eleftherios I. Paschalis
- Harvard Medical School, Boston, MA, United States
- Disruptive Technology Laboratory (D.T.L.), Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA, United States
| | - Qinmei Wang
- Eye Hospital and School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou, China
| | - Mei Yang
- Eye Hospital and School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou, China
| | - Jinhai Huang
- Eye Institute and Department of Ophthalmology, Eye & ENT Hospital, Fudan University, Shanghai, China
- NHC Key Laboratory of Myopia (Fudan University), Key Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai, China
- Shanghai Research Center of Ophthalmology and Optometry, Shanghai, China
| | - A-Yong Yu
- Eye Hospital and School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou, China
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Zhang J, Li M, Ou Y, Chen D, Ding Y, Zhang W, Li Y, Hou Q, Li X, Zhou L, Podgorska K, Zaberezhny AD, Szczotka-Bochniarz A, Liu Y, Wang Y. Development and Clinical Validation of a Potential Penside Colorimetric Loop-Mediated Isothermal Amplification Assay of Porcine Circovirus Type 3. Front Microbiol 2022; 12:758064. [PMID: 35095787 PMCID: PMC8790240 DOI: 10.3389/fmicb.2021.758064] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Accepted: 11/29/2021] [Indexed: 11/13/2022] Open
Abstract
Porcine circovirus type 3 (PCV3), a novel circovirus, imposes great burdens on the global pig industry. The penside tests for detecting PCV3 are critical for assessing the epidemiological status and working out disease prevention and control programs due to the unavailability of a commercial vaccine. A one-step molecular assay based on visual loop-mediated isothermal amplification (vLAMP) was developed for simple and rapid detection of PCV3. We compared its sensitivity and specificity with TaqMan quantitative real-time polymerase chain reaction (qPCR) and applied the developed assay in the epidemiological study of (n = 407) pooled swine sera collected from almost the entire mainland China during the years 2017–2018. We also explored the feasibility of the vLAMP assay for detecting raw samples without a prior DNA isolation step to expand its application capability. Results showed that the vLAMP assay could reliably detect the PCV3 cap gene with a detection limit of 10 DNA copies equal to that of the Taqman qPCR assay. In the epidemiological study, the PCV3 positive detection rate for 407 swine pooled sera detected by the vLAMP assay was 37.35% (152/407), whereas it was 39.01% (159/407) for Taqman qPCR. For the detection method without genome extraction, the results kept satisfactory specificity (100%) but displayed lower sensitivity (100% for CT < 32), indicating the direct detection is not sensitive enough to discriminate the samples with low viral loads. The one-step vLAMP is a convenient, rapid, and cost-effective diagnostic for penside detection and will enable the epidemiological surveillance of PCV3, which has widely spread in mainland China.
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Affiliation(s)
- Jie Zhang
- College of Animal Science and Technology, Hebei Normal University of Science and Technology, Qinhuangdao, China
| | - Miaomiao Li
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Yunwen Ou
- Animal Disease Prevention and Control Center of Kaijiang County, Dazhou, China
| | - Danian Chen
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Yaozhong Ding
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Weibing Zhang
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Yanjun Li
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Qian Hou
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Xiaoyun Li
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Luoyi Zhou
- College of Animal Science and Technology, Hebei Normal University of Science and Technology, Qinhuangdao, China
| | - Katarzyna Podgorska
- Department of Swine Diseases, National Veterinary Research Institute, Puławy, Poland
| | - Alexei D Zaberezhny
- Federal State Budgetary Institution, All-Russian Research and Technological Institute of Biological Industry (VNITIBP), Moscow, Russia
| | | | - Yongsheng Liu
- College of Animal Science and Technology, Hebei Normal University of Science and Technology, Qinhuangdao, China
| | - Yang Wang
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
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11
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Lin SY. Current and potential applications of simultaneous DSC-FTIR microspectroscopy for pharmaceutical analysis. J Food Drug Anal 2021; 29:182-202. [PMID: 35696204 PMCID: PMC9261823 DOI: 10.38212/2224-6614.3345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Revised: 02/03/2021] [Accepted: 03/15/2021] [Indexed: 09/17/2023] Open
Abstract
Quality control (QC) is the most important key issue in the pharmaceutical industry to ensure the quality of drug products. Many analytical instruments and techniques in pharmaceutical analysis are applied to assess the quality and quantity of the drugs. In the current and future trends, a combination of digitization, automation and hyphenation with high throughput on-line performance will be the topics for the future of pharmaceutical QC. The hyphenated analytical techniques have recently received great attention as unique means to solve complex analytical problems in a short period of time. This review article is an update on the recent potential applications of hyphenated technique developed from the coupling of a rapid separation or induction technique (differential scanning calorimetry; DSC) and an on-line spectroscopic (Fourier transform infrared; FTIR) detection technology to carry out an one-step solid-state analysis in pharmaceutical formulation developments, including (1) intramolecular condensation of pharmaceutical polymers, (2) intramolecular cyclization of drugs and sweetener, (3) polymorphic transformation of drugs and excipients, (4) drug-polymer (excipient) interaction, (5) fast cocrystal screening and formation. This simultaneous DSC-FTIR microspectroscopy can also provide an easy and direct method for one-step screening and qualitative detection of drug stability in real time.
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Affiliation(s)
- Shan-Yang Lin
- Laboratory of Pharmaceutics and Biopharmaceutics, Department of Biotechnology and Pharmaceutical Technology, Yuanpei University of Medical Technology, No. 306, Yuanpei Street, Hsinchu 30015, Taiwan
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12
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Wang Y, Dai J, Liu Y, Yang J, Hou Q, Ou Y, Ding Y, Ma B, Chen H, Li M, Sun Y, Zheng H, Zhang K, Wubshet AK, Zaberezhny AD, Aliper TI, Tarasiuk K, Pejsak Z, Liu Z, Zhang Y, Zhang J. Development of a Potential Penside Colorimetric LAMP Assay Using Neutral Red for Detection of African Swine Fever Virus. Front Microbiol 2021; 12:609821. [PMID: 33967972 PMCID: PMC8102904 DOI: 10.3389/fmicb.2021.609821] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [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: 09/24/2020] [Accepted: 02/22/2021] [Indexed: 11/13/2022] Open
Abstract
African swine fever (ASF) has caused huge economic losses to the swine industry worldwide. Since there is no commercial ASF vaccine available, an early diagnosis is extremely important to prevent and control the disease. In this study, ASF virus (ASFV) capsid protein-encoding gene (p72) was selected and used to design primers for establishing a one-step visual loop-mediated isothermal amplification (LAMP) assay with neutral red, a pH-sensitive dye, as the color shift indicator. Neutral red exhibited a sharp contrast of color change from faint orange (negative) to pink (positive) during LAMP for detection of ASFV. The designed primer set targeting highly conserved region of the p72 gene was highly specific to ASFV and showed no cross-reactivity with other swine viruses. The detection limit for the one-step visual LAMP developed was 10 copies/reaction based on the recombinant plasmid containing the p72 gene of ASFV. More importantly, the developed one-step visual LAMP showed high consistency with the results of the real-time polymerase chain reaction (qPCR) method recommended by World Organization for Animal Health (OIE). Furthermore, the results demonstrate that the colorimetric detection with this LAMP assay could be directly applied for the whole blood and serum samples without requiring genome extraction. Based on our results, the developed one-step visual LAMP assay is a promising penside diagnostic tool for development of early and cost-effective ASF monitoring program that would greatly contribute to the prevention and control of ASF.
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Affiliation(s)
- Yang Wang
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Junfei Dai
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Yongsheng Liu
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Jifei Yang
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Qian Hou
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Yunwen Ou
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Yaozhong Ding
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Bing Ma
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Haotai Chen
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - MiaoMiao Li
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Yuefeng Sun
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Haixue Zheng
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Keshan Zhang
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Ashenafi Kiros Wubshet
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China.,Department of Basic and Diagnostic Sciences, College of Veterinary Sciences, Mekelle University, Mekelle, Ethiopia
| | - Alexei D Zaberezhny
- Federal State Budgetary Institution, All-Russian Research and Technological Institute of Biological Industry (VNITIBP), Moscow, Russia
| | - Taras I Aliper
- Federal State Budget Scientific Institution "Federal Scientific Center VIEV", Moscow, Russia
| | | | - Zygmunt Pejsak
- University Center of Veterinary Medicine JU-AU, Krakow, Poland
| | - Zhijie Liu
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Yongguang Zhang
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Jie Zhang
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
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13
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Chang C, Zou X, Cheng J, Ling T, Yao Y, Chen D. Influence of Solution Deposition Process on Modulating Majority Charge Carrier Type and Quality of Perovskite Thin Films for Solar Cells. Materials (Basel) 2019; 12:E2494. [PMID: 31390783 PMCID: PMC6695680 DOI: 10.3390/ma12152494] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [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: 07/11/2019] [Revised: 08/02/2019] [Accepted: 08/05/2019] [Indexed: 11/16/2022]
Abstract
In the past ten years, extensive research has witnessed the rapid development of perovskite solar cells (PSCs) and diversified preparation processing craft. At present, the most widely used methods of preparing perovskite solar cells are the one-step method and the two-step method. The main work of this paper is to study the effect of the solution deposition process on the quality of perovskite thin films, as well as modulating majority charge carrier types. Perovskite film was prepared in air by designing different processes, which were then adequately analyzed with corresponding methods. It was demonstrated that the preparation process plays a crucial role in modulating the type of majority carrier and in achieving high-quality perovskite thin film. The one-step prepared perovskite layer is enriched in MA+, leading to a P type majority carrier type thin film. The two-step prepared perovskite layer is enriched in Pb2+, leading to a N type majority carrier type thin film. In addition, we found that the one-step method caused PbI2 residue due to component segregation, which seriously affects the interface and film quality of the perovskite layer. This work aims to modulate the majority carrier type of perovskite film through different preparation processes, which can lay the foundation for the study of homojunction perovskite solar cells to improve the device performance of PSCs.
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Affiliation(s)
- Chuangchuang Chang
- Beijing Advanced Innovation Center for Materials Genome Engineering, Research Center for Sensor Technology, Beijing Key Laboratory for Sensor, MOE Key Laboratory for Modern Measurement and Control Technology, School of Applied Sciences, Beijing Information Science and Technology University, Jianxiangqiao Campus, Beijing 100101, China
| | - Xiaoping Zou
- Beijing Advanced Innovation Center for Materials Genome Engineering, Research Center for Sensor Technology, Beijing Key Laboratory for Sensor, MOE Key Laboratory for Modern Measurement and Control Technology, School of Applied Sciences, Beijing Information Science and Technology University, Jianxiangqiao Campus, Beijing 100101, China.
| | - Jin Cheng
- Beijing Advanced Innovation Center for Materials Genome Engineering, Research Center for Sensor Technology, Beijing Key Laboratory for Sensor, MOE Key Laboratory for Modern Measurement and Control Technology, School of Applied Sciences, Beijing Information Science and Technology University, Jianxiangqiao Campus, Beijing 100101, China
| | - Tao Ling
- Beijing Advanced Innovation Center for Materials Genome Engineering, Research Center for Sensor Technology, Beijing Key Laboratory for Sensor, MOE Key Laboratory for Modern Measurement and Control Technology, School of Applied Sciences, Beijing Information Science and Technology University, Jianxiangqiao Campus, Beijing 100101, China
| | - Yujun Yao
- Beijing Advanced Innovation Center for Materials Genome Engineering, Research Center for Sensor Technology, Beijing Key Laboratory for Sensor, MOE Key Laboratory for Modern Measurement and Control Technology, School of Applied Sciences, Beijing Information Science and Technology University, Jianxiangqiao Campus, Beijing 100101, China
| | - Dan Chen
- State Key Laboratory on Integrated Optoelectronics, Institute of Semiconductors, Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100864, China
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14
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Li TT, Cen X, Ren HT, Sun F, Lin Q, Lou CW, Lin JH. One-Step Bark-Like Imitated Polypropylene (PP)/Polycarbonate (PC) Nanofibrous Meltblown Membrane for Efficient Particulate Matter Removal. Polymers (Basel) 2019; 11:E1307. [PMID: 31382710 PMCID: PMC6723958 DOI: 10.3390/polym11081307] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2019] [Revised: 08/01/2019] [Accepted: 08/02/2019] [Indexed: 11/16/2022] Open
Abstract
A bark-like imitated polypr opylene (PP)/polycarbonate (PC) nanofibrous membrane was constructed by one-step meltblown technique for efficient particulate matter (PM) removal. The effects of PC content (0%, 1%, 3%, 5%, and 7%) on membrane thermal stability, microscopic characteristics, filtration performance, hydrophilicity, and water vapor transmission were investigated. The results demonstrated that using facile design of incompatibility and viscosity difference between PC and PP polymers decreases average fiber diameter, creating a bark-like groove appearance and increasing surface potential, making a new PP/PC membrane with high filtration performance. The resultant PP/PC membrane had finer average fiber diameter of 0.63 μm, which was nearly 89.41% lower than PP membranes (5.95 μm), and its quality factor (0.036 Pa-1) was nearly 2.12 times than that of PP membranes (0.017 Pa-1) with the die hole diameter of 0.5 mm. This fabrication technique of a special meltblown filter membrane saves the cost of die retrofitting and post-processing, which provides an innovative method for particulate efficient removal of high efficient filters.
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Affiliation(s)
- Ting-Ting Li
- Innovation Platform of Intelligent and Energy-Saving Textiles, School of Textile Science and Engineering, Tianjin Polytechnic University, Tianjin 300387, China
- Tianjin and Ministry of Education Key Laboratory for Advanced Textile Composite Materials, Tianjin Polytechnic University, Tianjin 300387, China
- Fujian Key Laboratory of Novel Functional Fibers and Materials, Minjiang University, Fuzhou 350108, China
| | - Xixi Cen
- Innovation Platform of Intelligent and Energy-Saving Textiles, School of Textile Science and Engineering, Tianjin Polytechnic University, Tianjin 300387, China
| | - Hai-Tao Ren
- Innovation Platform of Intelligent and Energy-Saving Textiles, School of Textile Science and Engineering, Tianjin Polytechnic University, Tianjin 300387, China
| | - Fei Sun
- Innovation Platform of Intelligent and Energy-Saving Textiles, School of Textile Science and Engineering, Tianjin Polytechnic University, Tianjin 300387, China
| | - Qi Lin
- Ocean College, Minjiang University, Fuzhou 350108, China.
- Fujian Engineering Research Center of New Chinese Lacquer Material, Minjiang University, Fuzhou 350108, China.
| | - Ching-Wen Lou
- Innovation Platform of Intelligent and Energy-Saving Textiles, School of Textile Science and Engineering, Tianjin Polytechnic University, Tianjin 300387, China.
- Fujian Key Laboratory of Novel Functional Fibers and Materials, Minjiang University, Fuzhou 350108, China.
- Ocean College, Minjiang University, Fuzhou 350108, China.
- Department of Bioinformatics and Medical Engineering, Asia University, Taichung 41354, Taiwan.
- Department of Medical Research, China Medical University Hospital, China Medical University, Taichung 40402, Taiwan.
- College of Textile and Clothing, Qingdao University, Shandong 266071, China.
| | - Jia-Horng Lin
- Innovation Platform of Intelligent and Energy-Saving Textiles, School of Textile Science and Engineering, Tianjin Polytechnic University, Tianjin 300387, China.
- Fujian Key Laboratory of Novel Functional Fibers and Materials, Minjiang University, Fuzhou 350108, China.
- Ocean College, Minjiang University, Fuzhou 350108, China.
- College of Textile and Clothing, Qingdao University, Shandong 266071, China.
- Laboratory of Fiber Application and Manufacturing, Department of Fiber and Composite Materials, Feng Chia University, Taichung 40724, Taiwan.
- Department of Fashion Design, Asia University, Taichung 41354, Taiwan.
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15
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He X, Zhang D, Wu J, Wang Y, Chen F, Fan P, Zhong M, Xiao S, Yang J. One-Pot and One-Step Fabrication of Salt-Responsive Bilayer Hydrogels with 2D and 3D Shape Transformations. ACS Appl Mater Interfaces 2019; 11:25417-25426. [PMID: 31140780 DOI: 10.1021/acsami.9b06691] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Bilayer hydrogels are one of the most promising materials for use as soft actuators, artificial muscles, and soft robotic elements. Therefore, the development of new and simple methods for the fabrication of such hydrogels is of particular importance for both academic research and industrial applications. Herein, a facile, one-pot, and one-step methodology was used to prepare bilayer hydrogels. Specifically, several common monomers, including N-isopropyl acrylamide, acrylamide, and N-(2-hydroxyethyl)acrylamide, as well as two salt-responsive zwitterionic monomers, 3-(1-(4-vinylbenzyl)-1H-imidazol-3-ium-3-yl)propane-1-sulfonate (VBIPS) and dimethyl-(4-vinylphenyl)ammonium propane sulfonate (DVBAPS), were chosen and employed with different combinations and ratios to understand the formation and structural tunability of the bilayer hydrogels. The results indicated that a salt-responsive zwitterionic-enriched copolymer, which could precipitate from water, plays a dominant role in the formation of the bilayer structure and that the ratio between the common monomer and the zwitterionic monomer had a significant effect on the structure. Due to the salt-responsive properties of polyVBIPS and polyDVBAPS, the resultant bilayer hydrogels exhibited excellent bidirectional bending properties in response to the salt solution. With the optimal monomer pair and ratio determined, the bend of the hydrogel could be reversed from ∼-360 to ∼266° in response to a switch between water and a 1.0 M NaCl solution. Additionally, this method was further used to fabricate small-scaled patterns with structural and compositional distinction in two-dimensional hydrogel sheets. These two-dimensional hydrogel sheets exhibited complex and reversible three-dimensional shape transformations due to the different bending behaviors of the patterned hydrogel stripes under the action of an external stimulus. This work provides greater insight into the mechanism of the one-step, one-pot method fabrication of bilayer hydrogels, demonstrates the ability of this method for the preparation of small-scale patterns in hydrogel sheets to endow the complex with a three-dimensional shape transformation capability, and hopefully opens up a new pathway for the design and fabrication of smart hydrogels.
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Affiliation(s)
- Xiaomin He
- College of Materials Science & Engineering , Zhejiang University of Technology , Hangzhou 310014 , China
| | - Dong Zhang
- Department of Chemical and Biomolecular Engineering , The University of Akron , Akron , Ohio 44325 , United States
| | - Jiahui Wu
- College of Materials Science & Engineering , Zhejiang University of Technology , Hangzhou 310014 , China
| | - Yang Wang
- College of Materials Science & Engineering , Zhejiang University of Technology , Hangzhou 310014 , China
| | - Feng Chen
- College of Materials Science & Engineering , Zhejiang University of Technology , Hangzhou 310014 , China
| | - Ping Fan
- College of Materials Science & Engineering , Zhejiang University of Technology , Hangzhou 310014 , China
| | - Mingqiang Zhong
- College of Materials Science & Engineering , Zhejiang University of Technology , Hangzhou 310014 , China
| | - Shengwei Xiao
- School of Pharmaceutical and Chemical Engineering , Taizhou University , Jiaojiang 318000 , China
| | - Jintao Yang
- College of Materials Science & Engineering , Zhejiang University of Technology , Hangzhou 310014 , China
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16
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Xiang L, Liu Y, Liu Y, Zheng C, Zhao X. Ultrafast Synthesis of Urchin-Like Rutile TiO₂ by Single-Step Microwave-Assisted Method. Nanomaterials (Basel) 2018; 8:E630. [PMID: 30127289 DOI: 10.3390/nano8080630] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Revised: 08/16/2018] [Accepted: 08/17/2018] [Indexed: 02/01/2023]
Abstract
The preparations of crystal titanium dioxide (TiO2) are often time-consuming multistep processes involving high temperature. Rapid and efficient methods to obtain TiO2 with anatase or rutile phase are desirable. In this paper, we describe an ultrafast single-step method to obtain urchin-like rutile TiO2 particles via microwave irradiation. In the procedure, TiCl4 aqueous solution was used as a reactant and toluene was used as a solvent. It takes only a few minutes without any further heat treatment. The samples were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), and thermal gravimetric analysis (TGA). The effect of temperature, irradiation time and the ratio of precursor to solvent on the morphology and crystal structure were studied. The results show urchin-like rutile TiO2 with high stability is formed after only 5 min microwave irradiation at 135 °C.
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17
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Kontopantelis E. A comparison of one-stage vs two-stage individual patient data meta-analysis methods: A simulation study. Res Synth Methods 2018; 9:417-430. [PMID: 29786975 PMCID: PMC6175226 DOI: 10.1002/jrsm.1303] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Revised: 04/24/2018] [Accepted: 05/11/2018] [Indexed: 11/28/2022]
Abstract
Background Individual patient data (IPD) meta‐analysis allows for the exploration of heterogeneity and can identify subgroups that most benefit from an intervention (or exposure), much more successfully than meta‐analysis of aggregate data. One‐stage or two‐stage IPD meta‐analysis is possible, with the former using mixed‐effects regression models and the latter obtaining study estimates through simpler regression models before aggregating using standard meta‐analysis methodology. However, a comprehensive comparison of the two methods, in practice, is lacking. Methods We generated 1000 datasets for each of many simulation scenarios covering different IPD sizes and different between‐study variance (heterogeneity) assumptions at various levels (intercept and exposure). Numerous simulation settings of different assumptions were also used, while we evaluated performance both on main effects and interaction effects. Performance was assessed on mean bias, mean error, coverage, and power. Results Fully specified one‐stage models (random study intercept or fixed study‐specific intercept; random exposure effect; and fixed study‐specific effects for covariate) were the best performers overall, especially when investigating interactions. For main effects, performance was almost identical across models unless intercept heterogeneity was present, in which case the fully specified one‐stage and the two‐stage models performed better. For interaction effects, differences across models were greater with the two‐stage model consistently outperformed by the two fully specified one‐stage models. Conclusions A fully specified one‐stage model should be preferred (accounting for potential exposure, intercept, and, possibly, interaction heterogeneity), especially when investigating interactions. If non‐convergence is encountered with a random study intercept, the fixed study‐specific intercept one‐stage model should be used instead.
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Affiliation(s)
- Evangelos Kontopantelis
- Faculty of Biology, Medicine and HealthUniversity of ManchesterManchesterUK
- NIHR School for Primary Care ResearchUniversity of ManchesterManchesterUK
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18
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Arlotta KJ, Gandhi AV, Chen HN, Nervig CS, Carpenter JF, Owen SC. In-Depth Comparison of Lysine-Based Antibody-Drug Conjugates Prepared on Solid Support Versus in Solution. Antibodies (Basel) 2018; 7:E6. [PMID: 31544859 DOI: 10.3390/antib7010006] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Revised: 01/02/2018] [Accepted: 01/04/2018] [Indexed: 12/27/2022] Open
Abstract
Antibody drug conjugates are a rapidly growing form of targeted chemotherapeutics. As companies and researchers move to develop new antibody–drug conjugate (ADC) candidates, high-throughput methods will become increasingly common. Here we use advanced characterization techniques to assess two trastuzumab-DM1 (T-DM1) ADCs; one produced using Protein A immobilization and the other produced in solution. Following determination of payload site and distribution with liquid chromatography-mass spectrometry (LC/MS), thermal stability, heat-induced aggregation, tertiary structure, and binding affinity were characterized using differential scanning calorimetry (DSC), dynamic light scattering (DLS), Raman spectroscopy, and isothermal titration calorimetry (ITC), respectively. Small differences in the thermal stability of the CH2 domain of the antibody as well as aggregation onset temperatures were observed from DSC and DLS, respectively. However, no significant differences in secondary and tertiary structure were observed with Raman spectroscopy, or binding affinity as measured by ITC. Lysine-based ADC conjugation produces an innately heterogeneous population that can generate significant variability in the results of sensitive characterization techniques. Characterization of these ADCs indicated nominal differences in thermal stability but not in tertiary structure or binding affinity. Our results lead us to conclude that lysine-based ADCs synthesized following Protein A immobilization, common in small-scale conjugations, are highly similar to equivalent ADCs produced in larger scale, solution-based methods.
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19
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Long M, Peng S, Yang X, Deng W, Wen N, Miao K, Chen G, Miao X, Deng W. One-Step Fabrication of Non-Fluorinated Transparent Super-Repellent Surfaces with Tunable Wettability Functioning in Both Air and Oil. ACS Appl Mater Interfaces 2017; 9:15857-15867. [PMID: 28426195 DOI: 10.1021/acsami.7b01926] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
In this paper, we have developed a one-step thermal treatment of polydimethylsiloxane (PDMS) liquid to create transparent super-repellent surface (TSS) and super-repellent powder. They are super-repellent toward water and ethylene glycol. During the one-step thermal treatment, PDMS soot is generated and deposited onto a glass slide (GS) surface to fabricate the TSS without fluorosilane modification. The facilely obtained TSS presented superhydrophobicity and self-cleaning property when immersed into very low surface tension oils such as petroleum ether, hexadecane, peanut oil, and dodecane. Interestingly, by controlling heating time and temperature, wettability of the treated GS surface and the remained white powder can be regulated. The mechanism of tunable wettability was revealed and analyzed by investigating the variations of surface morphology and chemical composition. More importantly, TSS was able to repel highly corrosive aqua regia and saturated NaOH solutions. TSS maintained excellent superhydrophobicity even after chemical and mechanical damages. This simple thermal deposition method was also applicable for other thermally stable substrates to achieve super-repellency, which are believed to find very promising applications.
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Affiliation(s)
- Mengying Long
- College of Materials Science and Engineering, South China University of Technology , Wushan Road, Tianhe District, Guangzhou 510640, PR China
| | - Shan Peng
- College of Materials Science and Engineering, South China University of Technology , Wushan Road, Tianhe District, Guangzhou 510640, PR China
| | - Xiaojun Yang
- College of Materials Science and Engineering, South China University of Technology , Wushan Road, Tianhe District, Guangzhou 510640, PR China
| | - Wanshun Deng
- College of Materials Science and Engineering, South China University of Technology , Wushan Road, Tianhe District, Guangzhou 510640, PR China
| | - Ni Wen
- College of Materials Science and Engineering, South China University of Technology , Wushan Road, Tianhe District, Guangzhou 510640, PR China
| | - Kai Miao
- College of Materials Science and Engineering, South China University of Technology , Wushan Road, Tianhe District, Guangzhou 510640, PR China
| | - Gongyun Chen
- College of Materials Science and Engineering, South China University of Technology , Wushan Road, Tianhe District, Guangzhou 510640, PR China
| | - Xinrui Miao
- College of Materials Science and Engineering, South China University of Technology , Wushan Road, Tianhe District, Guangzhou 510640, PR China
| | - Wenli Deng
- College of Materials Science and Engineering, South China University of Technology , Wushan Road, Tianhe District, Guangzhou 510640, PR China
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20
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Chang WC, Lan DH, Lee KM, Wang XF, Liu CL. Controlled Deposition and Performance Optimization of Perovskite Solar Cells Using Ultrasonic Spray-Coating of Photoactive Layers. ChemSusChem 2017; 10:1405-1412. [PMID: 28026151 DOI: 10.1002/cssc.201601711] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2016] [Revised: 12/25/2016] [Indexed: 06/06/2023]
Abstract
This study investigated a new film-deposition technique, ultrasonic spray-coating, for use in the production of a photoactive layer of perovskite solar cells. Stable atomization and facile fabrication of perovskite thin films by ultrasonic spray-coating were achieved in a one-step method through manipulating the ink formulation (e.g., solution concentration, precursor composition, and mixing solvent ratio) and the drying kinetics (e.g., post-annealing temperature). The performance of the perovskite solar cells was mainly influenced by the intrinsic film morphology and crystalline orientation of the deposited perovskite layer. By suitable optimization of the spreading and drying conditions of the ink, ultrasonic spray-coated perovskite photovoltaic devices were obtained with a maximum power conversion efficiency of 11.30 %, a fill factor of 73.6 %, a short-circuit current of 19.7 mA cm-1 , and an open-circuit voltage of 0.78 V, respectively. Notably, the average power efficiency reached above 10 %, attributed to the large flower-like perovskite crystal with orientation along the (1 1 2)/(2 0 0) and (2 2 4)/(4 0 0) directions. Thus, the ultrasonic spray-coating method for perovskite photoactive layers, combining advantages of good photovoltaic performance results and benefits from cost and processing, has the potential for large-scale commercial production.
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Affiliation(s)
- Wei-Chieh Chang
- Department of Chemical and Materials Engineering, National Central University, Taoyuan, 32001, Taiwan
| | - Ding-Hung Lan
- Department of Chemical and Materials Engineering, National Central University, Taoyuan, 32001, Taiwan
| | - Kun-Mu Lee
- Department of Chemical and Materials Engineering, National Central University, Taoyuan, 32001, Taiwan
- Research Center for New Generation Photovoltaics, National Central University, Taoyuan, 32001, Taiwan
| | - Xiao-Feng Wang
- Key Laboratory of Physics and Technology for Advanced Batteries, Ministry of Education, College of Physics, Jilin University, Changchun, 130012, P.R. China
| | - Cheng-Liang Liu
- Department of Chemical and Materials Engineering, National Central University, Taoyuan, 32001, Taiwan
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Dziak JJ, Bray BC, Zhang J, Zhang M, Lanza ST. Comparing the Performance of Improved Classify-Analyze Approaches For Distal Outcomes in Latent Profile Analysis. Methodology (Gott) 2016. [PMID: 28630602 DOI: 10.1027/1614-2241/a000114] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Several approaches are available for estimating the relationship of latent class membership to distal outcomes in latent profile analysis (LPA). A three-step approach is commonly used, but has problems with estimation bias and confidence interval coverage. Proposed improvements include the correction method of Bolck, Croon, and Hagenaars (BCH; 2004), Vermunt's (2010) maximum likelihood (ML) approach, and the inclusive three-step approach of Bray, Lanza, & Tan (2015). These methods have been studied in the related case of latent class analysis (LCA) with categorical indicators, but not as well studied for LPA with continuous indicators. We investigated the performance of these approaches in LPA with normally distributed indicators, under different conditions of distal outcome distribution, class measurement quality, relative latent class size, and strength of association between latent class and the distal outcome. The modified BCH implemented in Latent GOLD had excellent performance. The maximum likelihood and inclusive approaches were not robust to violations of distributional assumptions. These findings broadly agree with and extend the results presented by Bakk and Vermunt (2016) in the context of LCA with categorical indicators.
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Affiliation(s)
- John J Dziak
- The Methodology Center, The Pennsylvania State University, University Park, PA, USA
| | - Bethany C Bray
- The Methodology Center, The Pennsylvania State University, University Park, PA, USA
| | - Jieting Zhang
- College of Psychology and Sociology, Shenzhen University, Guangdong, China.,The Methodology Center, The Pennsylvania State University, University Park, PA, USA
| | - Minqiang Zhang
- Center for Studies of Psychological Application, School of Psychology, South China Normal University, Guangdong, China
| | - Stephanie T Lanza
- The Methodology Center, The Pennsylvania State University, University Park, PA, USA.,Department of Biobehavioral Health, The Pennsylvania State University, University Park, PA, USA
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Xiong D, Song L, Geng S, Tao J, An S, Pan Z, Jiao X. One-Step PCR Detection of Salmonella Pullorum/Gallinarum Using a Novel Target: The Flagellar Biosynthesis Gene flhB. Front Microbiol 2016; 7:1863. [PMID: 27920764 PMCID: PMC5118417 DOI: 10.3389/fmicb.2016.01863] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [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: 09/06/2016] [Accepted: 11/04/2016] [Indexed: 11/23/2022] Open
Abstract
Salmonella enterica serovar Pullorum/Gallinarum is an important infectious pathogen that has caused widespread problems for chicken industry. Traditional Salmonella serotyping is an expensive and time-consuming process. In this study, we developed a rapid one-step polymerase chain reaction (PCR) method to identify S. Pullorum/Gallinarum. The PCR-based assay focuses on flhB, which shows a deficient region only in S. Pullorum/Gallinarum, compared with that of other serovars. The specificity and sensitivity of the PCR system were evaluated. The developed PCR method could identify S. Pullorum/Gallinarum from 27 different Salmonella serovars and eight non-Salmonella pathogens. The minimum limit of DNA and the lowest number of cells of S. Pullorum for the PCR detection were no less than 5.85 pg/μL and 10 CFU, respectively. The method was applied to the analysis of Salmonella strains isolated from the chicken farm. The PCR-based testing results of the farm isolates were in concordance with those obtained using traditional serotyping method. This newly developed PCR-based system could be used to accurately screen for the presence of S. Pullorum/Gallinarum, and support traditional serotyping methods, especially in high-throughput screening situations.
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Affiliation(s)
- Dan Xiong
- Jiangsu Key Laboratory of Zoonosis, Yangzhou UniversityYangzhou, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and ZoonosesYangzhou, China; Joint International Research Laboratory of Agriculture and Agri-product Safety of the Ministry of EducationYangzhou, China
| | - Li Song
- Jiangsu Key Laboratory of Zoonosis, Yangzhou UniversityYangzhou, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and ZoonosesYangzhou, China; Joint International Research Laboratory of Agriculture and Agri-product Safety of the Ministry of EducationYangzhou, China
| | - Shizhong Geng
- Jiangsu Key Laboratory of Zoonosis, Yangzhou UniversityYangzhou, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and ZoonosesYangzhou, China; Joint International Research Laboratory of Agriculture and Agri-product Safety of the Ministry of EducationYangzhou, China
| | - Jing Tao
- Jiangsu Key Laboratory of Zoonosis, Yangzhou UniversityYangzhou, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and ZoonosesYangzhou, China; Joint International Research Laboratory of Agriculture and Agri-product Safety of the Ministry of EducationYangzhou, China
| | - Shumin An
- Jiangsu Key Laboratory of Zoonosis, Yangzhou UniversityYangzhou, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and ZoonosesYangzhou, China; Joint International Research Laboratory of Agriculture and Agri-product Safety of the Ministry of EducationYangzhou, China
| | - Zhiming Pan
- Jiangsu Key Laboratory of Zoonosis, Yangzhou UniversityYangzhou, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and ZoonosesYangzhou, China; Joint International Research Laboratory of Agriculture and Agri-product Safety of the Ministry of EducationYangzhou, China
| | - Xinan Jiao
- Jiangsu Key Laboratory of Zoonosis, Yangzhou UniversityYangzhou, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and ZoonosesYangzhou, China; Joint International Research Laboratory of Agriculture and Agri-product Safety of the Ministry of EducationYangzhou, China
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Debergh I, Defoort B, De Visschere M, Flahou S, Van Cauwenberge S, Mulier JP, Dillemans B. A one-step conversion from gastric banding to laparoscopic Roux-en-Y gastric bypass is as safe as a two-step conversion: A comparative analysis of 885 patients. Acta Chir Belg 2016; 116:271-277. [PMID: 27903129 DOI: 10.1080/00015458.2016.1255005] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
AIMS To achieve additional weight loss or to resolve band-related problems, a laparoscopic adjustable gastric banding (LAGB) can be converted to a laparoscopic Roux-en-Y gastric bypass (RYGB). There is limited data on the feasibility and safety of routinely performing a single-step conversion. We assessed the efficacy of this revisional approach in a large cohort of patients operated in a high-volume bariatric institution. METHODS Between October 2004 and December 2015, a total of 885 patients who underwent LAGB removal with RYGB were identified from a prospectively collected database. In all cases, a single-stage conversion procedure was planned. The feasibility of this approach and peri-operative outcomes of these patients were evaluated and analyzed. RESULTS A single-step approach was successfully achieved in 738 (83.4%) of the 885 patients. During the study period, there was a significant increase in performing the conversion from LAGB to RYGB single-staged. No mortality or anastomotic leakage was observed in both groups. Only 45 patients (5.1%) had a 30-d complication: most commonly hemorrhage (N = 20/45), with no significant difference between the groups. CONCLUSION Converting a LAGB to RYGB can be performed with a very low morbidity and zero-mortality in a high-volume revisional bariatric center. With increasing experience and full standardization of the conversion, the vast majority of operations can be performed as a single-stage procedure. Only a migrated band remains a formal contraindication for a one-step approach.
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Affiliation(s)
- Isabelle Debergh
- Department of Surgery, AZ Sint-Jan Brugge ? Oostende AV, Campus Brugge, Brugge, Belgium
| | | | | | - Silke Flahou
- Department of Surgery, AZ Sint-Jan Brugge ? Oostende AV, Campus Brugge, Brugge, Belgium
| | | | - Jan P. Mulier
- Department of Anesthesia, AZ Sint-Jan Brugge ? Oostende AV, Campus Brugge, Brugge, Belgium
| | - Bruno Dillemans
- Department of Surgery, AZ Sint-Jan Brugge ? Oostende AV, Campus Brugge, Brugge, Belgium
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Ding S, Jiu J, Gao Y, Tian Y, Araki T, Sugahara T, Nagao S, Nogi M, Koga H, Suganuma K, Uchida H. One-Step Fabrication of Stretchable Copper Nanowire Conductors by a Fast Photonic Sintering Technique and Its Application in Wearable Devices. ACS Appl Mater Interfaces 2016; 8:6190-9. [PMID: 26830466 DOI: 10.1021/acsami.5b10802] [Citation(s) in RCA: 20] [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] [Indexed: 05/13/2023]
Abstract
Copper nanowire (CuNW) conductors have been considered to have a promising perspective in the area of stretchable electronics due to the low price and high conductivity. However, the fabrication of CuNW conductors suffers from harsh conditions, such as high temperature, reducing atmosphere, and time-consuming transfer step. Here, a simple and rapid one-step photonic sintering technique was developed to fabricate stretchable CuNW conductors on polyurethane (PU) at room temperature in air environment. It was observed that CuNWs were instantaneously deoxidized, welded and simultaneously embedded into the soft surface of PU through the one-step photonic sintering technique, after which highly conductive network and strong adhesion between CuNWs and PU substrates were achieved. The CuNW/PU conductor with sheet resistance of 22.1 Ohm/sq and transmittance of 78% was achieved by the one-step photonic sintering technique within only 20 μs in air. Besides, the CuNW/PU conductor could remain a low sheet resistance even after 1000 cycles of stretching/releasing under 10% strain. Two flexible electronic devices, wearable sensor and glove-shaped heater, were fabricated using the stretchable CuNW/PU conductor, demonstrating that our CuNW/PU conductor could be integrated into various wearable electronic devices for applications in food, clothes, and medical supplies fields.
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Affiliation(s)
- Su Ding
- State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology , Harbin, 150001, China
- The Institute of Scientific and Industrial Research (ISIR), Osaka University , Osaka 565-0871, Japan
| | - Jinting Jiu
- The Institute of Scientific and Industrial Research (ISIR), Osaka University , Osaka 565-0871, Japan
| | - Yue Gao
- The Institute of Scientific and Industrial Research (ISIR), Osaka University , Osaka 565-0871, Japan
| | - Yanhong Tian
- State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology , Harbin, 150001, China
| | - Teppei Araki
- The Institute of Scientific and Industrial Research (ISIR), Osaka University , Osaka 565-0871, Japan
| | - Tohru Sugahara
- The Institute of Scientific and Industrial Research (ISIR), Osaka University , Osaka 565-0871, Japan
| | - Shijo Nagao
- The Institute of Scientific and Industrial Research (ISIR), Osaka University , Osaka 565-0871, Japan
| | - Masaya Nogi
- The Institute of Scientific and Industrial Research (ISIR), Osaka University , Osaka 565-0871, Japan
| | - Hirotaka Koga
- The Institute of Scientific and Industrial Research (ISIR), Osaka University , Osaka 565-0871, Japan
| | - Katsuaki Suganuma
- The Institute of Scientific and Industrial Research (ISIR), Osaka University , Osaka 565-0871, Japan
| | - Hiroshi Uchida
- Institute for Polymers and Chemicals Business Development Center, Showa Denko K.K. , Ichihara, Chiba 290-0067, Japan
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Qin Z, Chen Y, Wang X, Guo X, Guo L. Intergrowth of Cocatalysts with Host Photocatalysts for Improved Solar-to-Hydrogen Conversion. ACS Appl Mater Interfaces 2016; 8:1264-1272. [PMID: 26711355 DOI: 10.1021/acsami.5b09943] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
In the field of photocatalytic hydrogen generation, cocatalysts play a vital role in enhanced properties. Delicate control of the physicochemical properties of cocatalysts and systematic optimization of the coupling between cocatalysts and host photocatalysts are essential. Herein, a simple one-step hydrothermal method was proposed to synthesize noble-metal-free NiSx/CdS photocatalysts for the first time. Time-dependent growth studies revealed that NiSx cocatalysts and CdS host photocatalysts were intergrown with each other in the one-step hydrothermal process. Compared with NiSx@CdS photocatalysts prepared by the common two-step method, the intergrowth effect induced close contact between NiSx and CdS, as well as smaller size and better dispersity of NiSx nanoparticles. These specific characters of NiSx/CdS finally resulted in efficient charge separation and rapid surface reaction, giving rise to significantly improved photocatalytic activity with the apparent quantum efficiency at 420 nm as high as 60.4%. To our knowledge, this value is the highest efficiency for NiSx modified CdS photocatalysts and is among the best efficiencies for visible-light-driven photocatalysts. It is believed that the present work can provide a general guidance to develop an efficient heterostructured cocatalyst/photocatalyst system for hydrogen generation.
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Affiliation(s)
- Zhixiao Qin
- International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University , Shaanxi 710049, Peoples' Republic of China
| | - Yubin Chen
- International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University , Shaanxi 710049, Peoples' Republic of China
| | - Xixi Wang
- International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University , Shaanxi 710049, Peoples' Republic of China
| | - Xu Guo
- International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University , Shaanxi 710049, Peoples' Republic of China
| | - Liejin Guo
- International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University , Shaanxi 710049, Peoples' Republic of China
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Buda R, Cavallo M, Castagnini F, Cenacchi A, Natali S, Vannini F, Giannini S. Treatment of Hemophilic Ankle Arthropathy with One-Step Arthroscopic Bone Marrow-Derived Cells Transplantation. Cartilage 2015; 6:150-5. [PMID: 26175860 PMCID: PMC4481389 DOI: 10.1177/1947603515574286] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
OBJECTIVE Ankle arthropathy is a frequent and invalidating manifestation of hemophilia. Arthrodesis is the gold standard surgical procedure in end-stage disease, with many drawbacks in young patients. Recent literature has shown increase interest in regenerative procedures in hemophilic arthropathy, which may be desirable to delay or even avoid arthrodesis. The aim of this article is to present five cases of osteochondral lesions in ankle hemophilic arthropathy treated with a regenerative procedure: bone marrow-derived cells transplantation (BMDCT). DESIGN We report five hemophilic patients (four cases with hemophilia type A; one case with hemophilia type B) who have undergone BMDCT treatment, synovectomy, and arthroscopic debridement, with the use of autologous platelet-rich fibrin, to treat osteochondral lesions in hemophilic ankle arthropathy. The patients, included within this retrospective study, were clinically and radiologically evaluated with serial follow-ups, using the American Orthopaedic Foot and Ankle Society (AOFAS) scores, radiographs, and magnetic resonance imaging (MRI). RESULTS The mean preoperative AOFAS score was 35. After a mean follow-up of 2 years, the mean postoperative AOFAS score was 81, which included three patients returning back to sporting activities. The MRI Mocart score demonstrated signs of regeneration of chondral and bony tissue. No progression of joint degeneration was shown radiographically. CONCLUSION BMDCT is a promising regenerative treatment for osteochondral lesions in mild ankle hemophilic arthropathy, which may be useful to delay or even avoid ankle arthrodesis. Nevertheless, longer follow-ups and a larger case series are required.
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Affiliation(s)
- Roberto Buda
- I Clinic of Orthopaedic and Traumatology, Rizzoli Orthopaedic Institute, Bologna, Italy
| | - Marco Cavallo
- I Clinic of Orthopaedic and Traumatology, Rizzoli Orthopaedic Institute, Bologna, Italy
| | - Francesco Castagnini
- I Clinic of Orthopaedic and Traumatology, Rizzoli Orthopaedic Institute, Bologna, Italy
| | - Annarita Cenacchi
- Service of Immunohematology and Transfusional Medicine, Rizzoli Orthopaedic Institute, Bologna, Italy
| | - Simone Natali
- I Clinic of Orthopaedic and Traumatology, Rizzoli Orthopaedic Institute, Bologna, Italy
| | - Francesca Vannini
- I Clinic of Orthopaedic and Traumatology, Rizzoli Orthopaedic Institute, Bologna, Italy
| | - Sandro Giannini
- I Clinic of Orthopaedic and Traumatology, Rizzoli Orthopaedic Institute, Bologna, Italy
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Nomoev AV, Bardakhanov SP, Schreiber M, Bazarova DG, Romanov NA, Baldanov BB, Radnaev BR, Syzrantsev VV. Structure and mechanism of the formation of core-shell nanoparticles obtained through a one-step gas-phase synthesis by electron beam evaporation. Beilstein J Nanotechnol 2015; 6:874-80. [PMID: 25977857 PMCID: PMC4419578 DOI: 10.3762/bjnano.6.89] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2014] [Accepted: 03/11/2015] [Indexed: 05/28/2023]
Abstract
The structure of core-shell Cu@silica and Ag@Si nanoparticles obtained in one-step through evaporation of elemental precursors by a high-powered electron beam are investigated. The structure of the core and shell of the particles are investigated in order to elucidate their mechanisms of formation and factors affecting the synthesis. It is proposed that the formation of Cu@silica particles is mainly driven by surface tension differences between Cu and Si while the formation of Ag@Si particles is mainly driven by differences in the vapour concentration of the two components.
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Affiliation(s)
- Andrey V Nomoev
- Department of Physics and Engineering, Buryat State University, Smolina street 24a, Ulan-Ude, 670000, Russia
- Institute of Physical Materials Science, Siberian Branch of the Russian Academy of Sciences, Sakhyanova str. 6, Ulan-Ude, 670047, Russia
| | - Sergey P Bardakhanov
- Department of Physics and Engineering, Buryat State University, Smolina street 24a, Ulan-Ude, 670000, Russia
- Institute of Theoretical and Applied Mechanics, Siberian Branch of the Russian Academy of Sciences, Institutskaya str. 4/1, Novosibirsk, 630090, Russia
- Department of Physics, Novosibirsk State University, Pirogova street 2, Novosibirsk, 630090, Russia
| | - Makoto Schreiber
- Department of Physics and Engineering, Buryat State University, Smolina street 24a, Ulan-Ude, 670000, Russia
| | - Dashima G Bazarova
- Department of Physics and Engineering, Buryat State University, Smolina street 24a, Ulan-Ude, 670000, Russia
| | - Nikolai A Romanov
- Department of Physics and Engineering, Buryat State University, Smolina street 24a, Ulan-Ude, 670000, Russia
| | - Boris B Baldanov
- Department of Physics and Engineering, Buryat State University, Smolina street 24a, Ulan-Ude, 670000, Russia
| | - Bair R Radnaev
- Department of Physics and Engineering, Buryat State University, Smolina street 24a, Ulan-Ude, 670000, Russia
| | - Viacheslav V Syzrantsev
- Institute of Theoretical and Applied Mechanics, Siberian Branch of the Russian Academy of Sciences, Institutskaya str. 4/1, Novosibirsk, 630090, Russia
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Liu Q, Chen D, Kang Z. One-step electrodeposition process to fabricate corrosion-resistant superhydrophobic surface on magnesium alloy. ACS Appl Mater Interfaces 2015; 7:1859-67. [PMID: 25559356 DOI: 10.1021/am507586u] [Citation(s) in RCA: 100] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
A simple, one-step method has been developed to construct a superhydrophobic surface by electrodepositing Mg-Mn-Ce magnesium plate in an ethanol solution containing cerium nitrate hexahydrate and myristic acid. Scanning electron microscopy, energy-dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, and Fourier transform infrared spectroscopy were employed to characterize the surfaces. The shortest electrodeposition time to obtain a superhydrophobic surface was about 1 min, and the as-prepared superhydrophobic surfaces had a maximum contact angle of 159.8° and a sliding angle of less than 2°. Potentiodynamic polarization and electrochemical impedance spectroscopy measurements demonstrated that the superhydrophobic surface greatly improved the corrosion properties of magnesium alloy in 3.5 wt % aqueous solutions of NaCl, Na2SO4, NaClO3, and NaNO3. Besides, the chemical stability and mechanical durability of the as-prepared superhydrophobic surface were also examined. The presented method is rapid, low-cost, and environmentally friendly and thus should be of significant value for the industrial fabrication of anticorrosive superhydrophobic surfaces and should have a promising future in expanding the applications of magnesium alloys.
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Affiliation(s)
- Qin Liu
- School of Mechanical and Automotive Engineering, South China University of Technology , Guangzhou 510640, China
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29
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Zhong JS, Wan JZ, Ding WJ, Wu XF, Xie ZY. One-step separation and purification of two chromones and one pyrone from Aloe barbadensis Miller: a comparison between reversed-phase flash chromatography and high-speed counter current chromatography. Phytochem Anal 2014; 25:282-288. [PMID: 24497404 DOI: 10.1002/pca.2504] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2013] [Revised: 12/09/2013] [Accepted: 12/11/2013] [Indexed: 06/03/2023]
Abstract
INTRODUCTION Chromones and pyrones are the major secondary metabolites of Aloe barbadensis Miller. As they are minor components of the plant, an efficient purification procedure for them is of great importance for promoting their pharmacological studies. OBJECTIVE To develop efficient methods for one-step separation and purification of two chromones (5-((S)-2'-oxo-4'-hydroxypentyl)-2-hydroxymethylchromone (1) and 5-((4E)-2'-oxo-pentenyl)-2-hydroxymethylchromone (3)) and one pyrone (aloenin aglycone (2)) from A. barbadensis via reversed-phase flash chromatography (RP-FC) and high-speed counter current chromatography (HSCCC). METHODS The RP-FC separation was performed using methanol:water (26:74, v/v) as the mobile phase at a flow rate of 20 mL/min. A solvent system composed of dichloromethane:methanol:water (3:1.5:1, v/v/v) was used for the HSCCC separation, at a flow rate of 2.0 mL/min. RESULTS A one-step RP-FC operation within 110 min was successfully used for the purification of compounds 1 (27.9 mg, 96.5%), 2 (32.4 mg, 98.2%) and 3 (4.1 mg, 99.0%) from 129 mg of crude sample, and a one-step HSCCC separation within 95 min was successfully implemented for the purification of compounds 1 (31.1 mg, 97.6%), 2 (35.8 mg, 96.7%) and 3 (2.7 mg, 98.1%) from 134 mg of crude sample. CONCLUSION The developed procedures were efficient, with low cost and high yield, which would afford sufficient amounts of high-purity compounds for chromatographic purposes and pharmacological activity screening.
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Affiliation(s)
- Jia-Sheng Zhong
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, PR China
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Pijarowska-Kruszyna J, Jaron AW, Kachniarz A, Kasprzak K, Kowalska A, Malkowski B, Demphel S, Dollé F, Mikolajczak R. Synthesis of novel halo and tosyloxy nortropane derivatives as efficient precursors for the one-step synthesis of the dopamine transporter PET ligand [(18)F]FECNT. J Labelled Comp Radiopharm 2014; 57:148-57. [PMID: 24497079 DOI: 10.1002/jlcr.3181] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2013] [Revised: 12/10/2013] [Accepted: 12/10/2013] [Indexed: 11/08/2022]
Abstract
The fluorine-18 labeled nortropane derivative 2β-carbomethoxy-3β-(4-chlorophenyl)-8-(2-fluoroethyl)-nortropane (FECNT) is a dopamine transporter (DAT) ligand. Currently, it is considered as reference for positron emission tomography imaging. Herein, the synthesis of novel precursors (N-tosyloxy-, chloro-, and bromo- analogues) for one-step radiosynthesis of [(18)F]FECNT is reported. Using the N-mesyloxy- precursor in a one-step radiosynthesis, the crude [(18)F]FECNT was obtained with the radiolabeling yield of 45 ± 10%, confirming the practical efficiency of this approach in the design of novel precursors for labeling.
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Affiliation(s)
- J Pijarowska-Kruszyna
- Radioisotope Centre POLATOM, National Centre for Nuclear Research, Andrzeja Soltana 7, Otwock, Poland
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Tao X, Yu X, Zhang D, Shi W, Jiang H, Wang X, Wang Z, Niu L, Wu X, Xia X, Shen J. Development of a rapid chemiluminescent ciELISA for simultaneous determination of florfenicol and its metabolite florfenicol amine in animal meat products. J Sci Food Agric 2014; 94:301-307. [PMID: 23749768 DOI: 10.1002/jsfa.6258] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2013] [Revised: 04/18/2013] [Accepted: 06/08/2013] [Indexed: 06/02/2023]
Abstract
BACKGROUND A rapid one-step chemiluminescent competitive indirect enzyme-linked immunosorbent assay (CL-ciELISA) for florfenicol (FF) and its major metabolite florfenicol amine (FFA) residues in animal meat products has been developed. RESULTS The 50% binding inhibition (IC₅₀) values of the method were 0.195 µg kg⁻¹ for FFA and 0.24 µg kg⁻¹ for FF under optimum conditions. The cross-reactive rates for FF and FFA were 100.0% and 81.2%, respectively. FF and FFA were easily extracted from animal meat product with an FF/FFA extraction buffer, obtaining recoveries of 81.8-92.0% (FF) and 77.2-100% (FFA). The whole one-step CL-ciELISA test can be accomplished within 40 min in theory. The detection limits (LODs) of the assay were 0.98 µg kg⁻¹ for FF and 0.80 µg kg⁻¹ for FFA in animal meat samples. Finally, field animal meat samples were analyzed with the CL-ciELISA method, and the results correlated well with those obtained using traditional ELISA and a previously reported liquid chromatographic-tandem mass spectrometric method. CONCLUSION The combined results confirmed the utility of this faster one-step CL-ciELISA for simultaneous trace analysis of FF and FFA. To date, this is the most rapid developed ELISA and CL-ELISA method for detection of FF and FFA.
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Affiliation(s)
- Xiaoqi Tao
- Department of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
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Wang P, Liu Y, Chen T, Xu W, You J, Liu Y, Li Y. One-step separation and purification of three lignans and one flavonol from Sinopodophyllum emodi by medium-pressure liquid chromatography and high-speed counter-current chromatography. Phytochem Anal 2013; 24:603-607. [PMID: 23722877 DOI: 10.1002/pca.2438] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2012] [Revised: 02/27/2013] [Accepted: 03/01/2013] [Indexed: 06/02/2023]
Abstract
INTRODUCTION Lignans and flavonols are the primary constituents of Sinopodophyllum emodi and have been used as cathartic, anthelmintic, chemotherapeutic and anti-hypertensive compounds. Although these compounds have been isolated, there have been no reports on the separation of 4'-demethyl podophyllotoxin, podophyllotoxin, deoxypodophyllotoxin and kaempferol in one step by medium-pressure liquid chromatography (MPLC) and high-speed counter-current chromatography (HSCCC). OBJECTIVE Development of an efficient method for the preparative separation and purification of three lignans and one flavonol from S. emodi. METHODS The precipitate of crude extracts was first separated by MPLC into four parts, numbered GJ-1, GJ-2, GJ-3 and GJ-4. GJ-1 was separated and purified by HSCCC using a solvent system composed of n-hexane:ethyl acetate:methanol:water (1.75:1.5:1:0.75, v/v/v/v). The purities of the target compounds were assessed using high-performance liquid chromatography (HPLC) and chemical structures were identified by (1) H-NMR and (13) C-NMR. RESULTS The HSCCC and MPLC methods were successfully used for the preparative separation and purification of 4'-demethyl podophyllotoxin (8.5 mg, 92.4%), podophyllotoxin (40.1 mg, 92.1%), deoxypodophyllotoxin (4.6 mg, 98.1%), and kaempferol (1.6 mg, 96.7%) from a 100 mg sample. CONCLUSION Three lignans (4'-demethyl podophyllotoxin, podophyllotoxin, deoxypodophyllotoxin) and one flavonol (kaempferol) were successfully isolated by HSCCC and MPLC in one step.
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Affiliation(s)
- Ping Wang
- Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, 810001, PR China; University of the Chinese Academy of Sciences, Beijing, 100049, PR China
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