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Elrashdy F, Tambuwala MM, Hassan SS, Adadi P, Seyran M, Abd El-Aziz TM, Rezaei N, Lal A, Aljabali AAA, Kandimalla R, Bazan NG, Azad GK, Sherchan SP, Choudhury PP, Serrano-Aroca Á, Takayama K, Chauhan G, Pizzol D, Barh D, Panda PK, Mishra YK, Palù G, Lundstrom K, Redwan EM, Uversky VN. Autoimmunity roots of the thrombotic events after COVID-19 vaccination. Autoimmun Rev 2021; 20:102941. [PMID: 34508917 PMCID: PMC8426137 DOI: 10.1016/j.autrev.2021.102941] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Accepted: 06/06/2021] [Indexed: 02/03/2023]
Abstract
Although vaccination represents the most promising way to stop or contain the coronavirus disease 2019 (COVID-19) pandemic and safety and effectiveness of available vaccines were proven, a small number of individuals who received anti-SARS-CoV-2 vaccines developed a prothrombotic syndrome. Vaccine-induced immune thrombotic thrombocytopenia (VITT) can be triggered by the adenoviral vector-based vaccine, whereas lipid nanoparticle-mRNA-based vaccines can induce rare cases of deep vein thrombosis (DVT). Although the main pathogenic mechanisms behind this rare phenomenon have not yet been identified, both host and vaccine factors might be involved, with pathology at least in part being related to the vaccine-triggered autoimmune reaction. In this review, we are considering some aspects related to pathogenesis, major risk factors, as well as peculiarities of diagnosis and treatment of this rare condition.
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Affiliation(s)
- Fatma Elrashdy
- Department of Endemic Medicine and Hepatogastroenterology, Kasr Alainy, Cairo University, Cairo, Egypt.
| | - Murtaza M Tambuwala
- School of Pharmacy and Pharmaceutical Sciences, Ulster University, Coleraine, BT52 1SA, Northern Ireland, United Kingdom.
| | - Sk Sarif Hassan
- Department of Mathematics, Pingla Thana Mahavidyalaya, Maligram, 722140 Paschim Medinipur, West Bengal, India
| | - Parise Adadi
- Department of Food Science, University of Otago, Dunedin, New Zealand
| | - Murat Seyran
- Doctoral Student in Natural and Technical Sciences (SPL 44), University of Vienna, Währinger Straße, A-1090 Vienna, Austria.
| | - Tarek Mohamed Abd El-Aziz
- Zoology Department, Faculty of Science, Minia University, El-Minia 61519, Egypt; Department of Cellular and Integrative Physiology, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229-3900, USA.
| | - Nima Rezaei
- Research Center for Immunodeficiencies, Children's Medical Center, Tehran University of Medical Sciences, Tehran, Iran; Network of Immunity in Infection, Malignancy and Autoimmunity (NIIMA), Universal Scientific Education and Research Network (USERN), Stockholm, Sweden
| | - Amos Lal
- Department of Medicine, Division of Pulmonary and Critical Care Medicine, Mayo Clinic, Rochester, USA
| | - Alaa A A Aljabali
- Department of Pharmaceutics and Pharmaceutical Technology, Yarmouk University, Irbid 21163, P. O. BOX 566, Jordan.
| | - Ramesh Kandimalla
- Applied Biology, CSIR-Indian Institute of Chemical Technology, Uppal Road, Tarnaka, Hyderabad 500007, India; Department of Biochemistry, Kakatiya Medical College, Warangal, India
| | - Nicolas G Bazan
- Neuroscience Center of Excellence, School of Medicine, Louisiana State University Health New Orleans, New Orleans, Louisiana, 70112, USA.
| | | | - Samendra P Sherchan
- Department of Environmental Health Sciences, Tulane University, New Orleans, LA 70112, USA.
| | - Pabitra Pal Choudhury
- Applied Statistics Unit, Indian Statistical Institute, Kolkata, 700108, West Bengal, India
| | - Ángel Serrano-Aroca
- Biomaterials and Bioengineering Lab, Centro de Investigación Traslacional San Alberto Magno, Universidad Católica de Valencia San Vicente Mártir, c/Guillem de Castro 94, Valencia 46001, Spain.
| | - Kazuo Takayama
- Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto 606-8507, Japan.
| | - Gaurav Chauhan
- School of Engineering and Sciences, Tecnológico de Monterrey, Av. Eugenio Garza Sada 2501 Sur, 64849 Monterrey, Nuevo León, Mexico.
| | - Damiano Pizzol
- Italian Agency for Development Cooperation -, Khartoum, Sudan Street 33, Al Amarat, Sudan
| | - Debmalya Barh
- Institute of Integrative Omics and Applied Biotechnology (IIOAB), Nonakuri, Purba Medinipur, WB-721172, India; and Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil.
| | - Pritam Kumar Panda
- Condensed Matter Theory Group, Materials Theory Division, Department of Physics and Astronomy, Uppsala University, Box 516, SE-751 20 Uppsala, Sweden.
| | - Yogendra K Mishra
- University of Southern Denmark, Mads Clausen Institute, NanoSYD, Alsion 2, 6400 Sønderborg, Denmark.
| | - Giorgio Palù
- Department of Molecular Medicine, University of Padova, Italy.
| | | | - Elrashdy M Redwan
- Biological Science Department, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia.
| | - Vladimir N Uversky
- Department of Molecular Medicine, University of South Florida, Tampa, FL, United States.
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Kaushik A, Khan R, Solanki P, Gandhi S, Gohel H, Mishra YK. From Nanosystems to a Biosensing Prototype for an Efficient Diagnostic: A Special Issue in Honor of Professor Bansi D. Malhotra. Biosensors (Basel) 2021; 11:359. [PMID: 34677315 PMCID: PMC8533924 DOI: 10.3390/bios11100359] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Accepted: 09/26/2021] [Indexed: 11/30/2022]
Abstract
It has been proven that rapid bioinformatics analysis according to patient health profiles, in addition to biomarker detection at a low level, is emerging as essential to design an analytical diagnostics system to manage health intelligently in a personalized manner. Such objectives need an optimized combination of a nano-enabled sensing prototype, artificial intelligence (AI)-supported predictive analysis, and Internet of Medical Things (IoMT)-based bioinformatics analysis. Such a developed system began with a prototype demonstration of efficient diseases diagnostics performance is the future diseases management approach. To explore these aspects, the Special Issue planned for the nano-and micro-technology section of MDPI's Biosensors journal will honor and acknowledge the contributions of Prof. B.D. Malhotra, Ph.D., FNA, FNASc has made in the field of biosensors.
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Affiliation(s)
- Ajeet Kaushik
- NanoBioTech Laboratory, Department of Environmental Engineering, Florida Polytechnic University, Lakeland, FL 33805, USA
| | - Raju Khan
- CSIR-Advanced Materials & Processes Research Institute (AMPRI), Bhopal 462026, India;
| | - Pratima Solanki
- Special Center for Nano Science, Jawaharlal Nehru University, New Delhi 110067, India;
| | - Sonu Gandhi
- DBT-National Institute of Animal Biotechnology (NIAB), Hyderabad 500032, India;
| | - Hardik Gohel
- Applied Artificial Intelligence Laboratory, University of Houston-Victoria, Victoria, TX 77901, USA;
| | - Yogendra K. Mishra
- Smart Materials, NanoSYD, Mads Clausen Institute, University of Southern Denmark, Alsion 2, 6400 Sønderborg, Denmark;
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Chaudhary V, Gautam A, Mishra YK, Kaushik A. Emerging MXene-Polymer Hybrid Nanocomposites for High-Performance Ammonia Sensing and Monitoring. Nanomaterials (Basel) 2021; 11:2496. [PMID: 34684936 PMCID: PMC8538932 DOI: 10.3390/nano11102496] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 09/12/2021] [Accepted: 09/18/2021] [Indexed: 12/22/2022]
Abstract
Ammonia (NH3) is a vital compound in diversified fields, including agriculture, automotive, chemical, food processing, hydrogen production and storage, and biomedical applications. Its extensive industrial use and emission have emerged hazardous to the ecosystem and have raised global public health concerns for monitoring NH3 emissions and implementing proper safety strategies. These facts created emergent demand for translational and sustainable approaches to design efficient, affordable, and high-performance compact NH3 sensors. Commercially available NH3 sensors possess three major bottlenecks: poor selectivity, low concentration detection, and room-temperature operation. State-of-the-art NH3 sensors are scaling up using advanced nano-systems possessing rapid, selective, efficient, and enhanced detection to overcome these challenges. MXene-polymer nanocomposites (MXP-NCs) are emerging as advanced nanomaterials of choice for NH3 sensing owing to their affordability, excellent conductivity, mechanical flexibility, scalable production, rich surface functionalities, and tunable morphology. The MXP-NCs have demonstrated high performance to develop next-generation intelligent NH3 sensors in agricultural, industrial, and biomedical applications. However, their excellent NH3-sensing features are not articulated in the form of a review. This comprehensive review summarizes state-of-the-art MXP-NCs fabrication techniques, optimization of desired properties, enhanced sensing characteristics, and applications to detect airborne NH3. Furthermore, an overview of challenges, possible solutions, and prospects associated with MXP-NCs is discussed.
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Affiliation(s)
- Vishal Chaudhary
- Research Cell and Department of Physics, Bhagini Nivedita College, University of Delhi, New Delhi 110045, India
| | - Akash Gautam
- Centre for Neural and Cognitive Sciences, University of Hyderabad, Hyderabad 500046, India;
| | - Yogendra K. Mishra
- Mads Clausen Institute, NanoSYD, University of Southern Denmark, Alsion 2, 6400 Sønderborg, Denmark;
| | - Ajeet Kaushik
- NanoBioTech Laboratory, Health System Engineering, Department of Environmental Engineering, Florida Polytechnic University, Lakeland, FL 33805, USA
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Verma SK, Thirumurugan A, Panda PK, Patel P, Nandi A, Jha E, Prabakaran K, Udayabhaskar R, Mangalaraja RV, Mishra YK, Akbari-Fakhrabadi A, Morel MJ, Suar M, Ahuja R. Altered electrochemical properties of iron oxide nanoparticles by carbon enhance molecular biocompatibility through discrepant atomic interaction. Mater Today Bio 2021; 12:100131. [PMID: 34622194 PMCID: PMC8479829 DOI: 10.1016/j.mtbio.2021.100131] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [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: 07/02/2021] [Revised: 08/23/2021] [Accepted: 08/31/2021] [Indexed: 12/23/2022] Open
Abstract
Recent advancement in nanotechnology seeks exploration of new techniques for improvement in the molecular, chemical, and biological properties of nanoparticles. In this study, carbon modification of octahedral-shaped magnetic nanoparticles (MNPs) was done using two-step chemical processes with sucrose as a carbon source for improvement in their electrochemical application and higher molecular biocompatibility. X-ray diffraction analysis and electron microscopy confirmed the alteration in single-phase octahedral morphology and carbon attachment in Fe3O4 structure. The magnetization saturation and BET surface area for Fe3O4, Fe3O4/C, and α-Fe2O3/C were measured as 90, 86, and 27 emu/g and 16, 56, and 89 m2/g with an average pore size less than 7 nm. Cyclic voltammogram and galvanostatic charge/discharge studies showed the highest specific capacitance of carbon-modified Fe3O4 and α-Fe2O3 as 213 F/g and 192 F/g. The in vivo biological effect of altered physicochemical properties of Fe3O4 and α-Fe2O3 was assessed at the cellular and molecular level with embryonic zebrafish. Mechanistic in vivo toxicity analysis showed a reduction in oxidative stress in carbon-modified α-Fe2O3 exposed zebrafish embryos compared to Fe3O4 due to despaired influential atomic interaction with sod1 protein along with significant less morphological abnormalities and apoptosis. The study provided insight into improving the characteristic of MNPs for electrochemical application and higher biological biocompatibility.
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Affiliation(s)
- S K Verma
- School of Biotechnology, KIIT University, Bhubaneswar, 751024, India
- Condensed Matter Theory Group, Materials Theory Division, Department of Physics and Astronomy, Uppsala University, Box 516, SE-75120, Uppsala, Sweden
| | - A Thirumurugan
- Instituto de Investigaciónes Científicas y Tecnológicas (IDICTEC), Universidad de Atacama, Copayapu 485, Copiapó, Chile
| | - P K Panda
- Condensed Matter Theory Group, Materials Theory Division, Department of Physics and Astronomy, Uppsala University, Box 516, SE-75120, Uppsala, Sweden
| | - P Patel
- School of Biotechnology, KIIT University, Bhubaneswar, 751024, India
| | - A Nandi
- School of Biotechnology, KIIT University, Bhubaneswar, 751024, India
| | - E Jha
- School of Biotechnology, KIIT University, Bhubaneswar, 751024, India
| | - K Prabakaran
- SRM Research Institute, SRM Institute of Science and Technology, Kattankulathur, Chennai, Tamil Nadu, 603203, India
| | - R Udayabhaskar
- Instituto de Investigaciónes Científicas y Tecnológicas (IDICTEC), Universidad de Atacama, Copayapu 485, Copiapó, Chile
| | - R V Mangalaraja
- Advanced Ceramics and Nanotechnology Laboratory, Department of Materials Engineering, Faculty of Engineering, University of Concepción, Concepción, 4070409, Chile
- Technological Development Unit (UDT), University of Concepcion, Coronel Industrial Park, Coronel, Chile
| | - Y K Mishra
- Smart Materials, NanoSYD, Mads Clausen Institute, NanoSYD, University of Southern Denmark, Alsion 2, Denmark
| | - A Akbari-Fakhrabadi
- Advanced Materials Laboratory, Department of Mechanical Engineering, University of Chile, Santiago, Chile
| | - M J Morel
- Instituto de Investigaciónes Científicas y Tecnológicas (IDICTEC), Universidad de Atacama, Copayapu 485, Copiapó, Chile
| | - M Suar
- School of Biotechnology, KIIT University, Bhubaneswar, 751024, India
| | - R Ahuja
- Condensed Matter Theory Group, Materials Theory Division, Department of Physics and Astronomy, Uppsala University, Box 516, SE-75120, Uppsala, Sweden
- Department of Physics, Indian Institute of Technology Ropar, Rupnagar 140001, Punjab, India
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5
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Siebert L, Luna-Cerón E, García-Rivera LE, Oh J, Jang J, Rosas-Gómez DA, Pérez-Gómez MD, Maschkowitz G, Fickenscher H, Oceguera-Cuevas D, Holguín-León CG, Byambaa B, Hussain MA, Enciso-Martinez E, Cho M, Lee Y, Sobahi N, Hasan A, Orgill DP, Mishra YK, Adelung R, Lee E, Shin SR. Light-controlled growth factors release on tetrapodal ZnO-incorporated 3D-printed hydrogels for developing smart wound scaffold. Adv Funct Mater 2021; 31:2007555. [PMID: 36213489 PMCID: PMC9536771 DOI: 10.1002/adfm.202007555] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Indexed: 05/27/2023]
Abstract
Advanced wound scaffolds that integrate active substances to treat chronic wounds have gained significant recent attention. While wound scaffolds and advanced functionalities have previously been incorporated into one medical device, the wirelessly triggered release of active substances has remained the focus of many research endeavors. To combine multiple functions including light-triggered activation, anti-septic, angiogenic, and moisturizing properties, we have developed a 3D printed hydrogel patch encapsulating vascular endothelial growth factor (VEGF) decorated with photoactive and antibacterial tetrapodal zinc oxide (t-ZnO) microparticles. To achieve the smart release of VEGF, t-ZnO was modified by chemical treatment and activated through UV/visible light exposure. This process would also make the surface rough and improve protein adhesion. The elastic modulus and degradation behavior of the composite hydrogels, which must match the wound healing process, were adjusted by changing t-ZnO concentrations. The t-ZnO-laden composite hydrogels can be printed with any desired micropattern to potentially create a modular elution of various growth factors. The VEGF decorated t-ZnO-laden hydrogel patches showed low cytotoxicity and improved angiogenic properties while maintaining antibacterial functions in vitro. In vivo tests showed promising results for the printed wound patches, with less immunogenicity and enhanced wound healing.
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Affiliation(s)
- Leonard Siebert
- Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, MA 02139, USA
- Functional Nanomaterials, Institute for Materials Science, Faculty of Engineering, Kiel University, Kaiserstr. 2, D-24143, Kiel, Germany
| | - Eder Luna-Cerón
- Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, MA 02139, USA
| | - Luis Enrique García-Rivera
- Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, MA 02139, USA
| | - Junsung Oh
- Department of Nano-biomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan 31116, Republic of Korea
| | - JunHwee Jang
- Department of Nano-biomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan 31116, Republic of Korea
| | - Diego A Rosas-Gómez
- Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, MA 02139, USA
| | - Mitzi D Pérez-Gómez
- Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, MA 02139, USA
| | - Gregor Maschkowitz
- Institute for Infection Medicine, Kiel University and University Medical Center Schleswig-Holstein, Brunswiker Str. 4, D-24105 Kiel, Germany
| | - Helmut Fickenscher
- Institute for Infection Medicine, Kiel University and University Medical Center Schleswig-Holstein, Brunswiker Str. 4, D-24105 Kiel, Germany
| | - Daniela Oceguera-Cuevas
- Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, MA 02139, USA
| | - Carmen G Holguín-León
- Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, MA 02139, USA
| | | | - Mohammad A Hussain
- Department of Electrical and Computer Engineering, King Abdulaziz University, Jeddah 21569, Saudi Arabia
| | - Eduardo Enciso-Martinez
- Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, MA 02139, USA
| | | | - Yuhan Lee
- Department of Anesthesiology, preoperative and pain medicine, Center for Nanomedicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Nebras Sobahi
- Department of Electrical and Computer Engineering, King Abdulaziz University, Jeddah 21569, Saudi Arabia
| | - Anwarul Hasan
- Department of Mechanical and Industrial Engineering, College of Engineering, Qatar University, Doha, Qatar
- Biomedical Research Centre (BRC), Qatar University, Doha, Qatar
| | - Dennis P Orgill
- Division of Plastic Surgery, Department of Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Yogendra K Mishra
- Mads Clausen Institute, NanoSYD, University of Southern Denmark, Alsion 2, 6400, Sønderborg, Denmark
- Functional Nanomaterials, Institute for Materials Science, Faculty of Engineering, Kiel University, Kaiserstr. 2, D-24143, Kiel, Germany
| | - Rainer Adelung
- Functional Nanomaterials, Institute for Materials Science, Faculty of Engineering, Kiel University, Kaiserstr. 2, D-24143, Kiel, Germany
| | - Eunjung Lee
- Department of Nano-biomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan 31116, Republic of Korea
| | - Su Ryon Shin
- Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, MA 02139, USA
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Hassan SS, Aljabali AAA, Panda PK, Ghosh S, Attrish D, Choudhury PP, Seyran M, Pizzol D, Adadi P, Abd El-Aziz TM, Soares A, Kandimalla R, Lundstrom K, Lal A, Azad GK, Uversky VN, Sherchan SP, Baetas-da-Cruz W, Uhal BD, Rezaei N, Chauhan G, Barh D, Redwan EM, Dayhoff GW, Bazan NG, Serrano-Aroca Á, El-Demerdash A, Mishra YK, Palu G, Takayama K, Brufsky AM, Tambuwala MM. A unique view of SARS-CoV-2 through the lens of ORF8 protein. Comput Biol Med 2021; 133:104380. [PMID: 33872970 PMCID: PMC8049180 DOI: 10.1016/j.compbiomed.2021.104380] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 04/01/2021] [Accepted: 04/02/2021] [Indexed: 01/07/2023]
Abstract
Immune evasion is one of the unique characteristics of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) attributed to its ORF8 protein. This protein modulates the adaptive host immunity through down-regulation of MHC-1 (Major Histocompatibility Complex) molecules and innate immune responses by surpassing the host's interferon-mediated antiviral response. To understand the host's immune perspective in reference to the ORF8 protein, a comprehensive study of the ORF8 protein and mutations possessed by it have been performed. Chemical and structural properties of ORF8 proteins from different hosts, such as human, bat, and pangolin, suggest that the ORF8 of SARS-CoV-2 is much closer to ORF8 of Bat RaTG13-CoV than to that of Pangolin-CoV. Eighty-seven mutations across unique variants of ORF8 in SARS-CoV-2 can be grouped into four classes based on their predicted effects (Hussain et al., 2021) [1]. Based on the geo-locations and timescale of sample collection, a possible flow of mutations was built. Furthermore, conclusive flows of amalgamation of mutations were found upon sequence similarity analyses and consideration of the amino acid conservation phylogenies. Therefore, this study seeks to highlight the uniqueness of the rapidly evolving SARS-CoV-2 through the ORF8.
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Affiliation(s)
- Sk Sarif Hassan
- Department of Mathematics, Pingla Thana Mahavidyalaya, Maligram, 721140, India
| | - Alaa A A Aljabali
- Department of Pharmaceutics and Pharmaceutical Technology, Yarmouk University-Faculty of Pharmacy, Irbid, 566, Jordan
| | - Pritam Kumar Panda
- Condensed Matter Theory Group, Materials Theory Division, Department of Physics and Astronomy, Uppsala University, Box 516, SE-751 20, Uppsala, Sweden
| | - Shinjini Ghosh
- Department of Biophysics, Molecular Biology and Bioinformatics, University of Calcutta, Kolkata, 700009, West Bengal, India
| | - Diksha Attrish
- Dr. B. R. Ambedkar Centre for Biomedical Research (ACBR), University of Delhi (North Campus), Delhi, 110007, India
| | - Pabitra Pal Choudhury
- Applied Statistics Unit, Indian Statistical Institute, Kolkata, 700108, West Bengal, India
| | - Murat Seyran
- Doctoral Studies in Natural and Technical Sciences (SPL 44), University of Vienna, Austria
| | - Damiano Pizzol
- Italian Agency for Development Cooperation - Khartoum, Sudan Street 33, Al Amarat, Sudan
| | - Parise Adadi
- Department of Food Science, University of Otago, Dunedin, 9054, New Zealand
| | - Tarek Mohamed Abd El-Aziz
- Zoology Department, Faculty of Science, Minia University, El-Minia, 61519, Egypt; Department of Cellular and Integrative Physiology, University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Dr, San Antonio, TX, 78229-3900, USA
| | - Antonio Soares
- Department of Cellular and Integrative Physiology, University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Dr, San Antonio, TX, 78229-3900, USA
| | - Ramesh Kandimalla
- CSIR-Indian Institute of Chemical Technology Uppal Road, Tarnaka, Hyderabad, 500007, Telangana State, India
| | | | - Amos Lal
- Division of Pulmonary and Critical Care Medicine, Mayo Clinic, Rochester, MN, USA
| | | | - Vladimir N Uversky
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, 33612, USA
| | - Samendra P Sherchan
- Department of Environmental Health Sciences, Tulane University, New Orleans, LA, 70112, USA
| | - Wagner Baetas-da-Cruz
- Translational Laboratory in Molecular Physiology, Centre for Experimental Surgery, College of Medicine, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Bruce D Uhal
- Department of Physiology, Michigan State University, East Lansing, MI, 48824, USA
| | - Nima Rezaei
- Research Center for Immunodeficiencies, Pediatrics Center of Excellence, Children's Medical Center, Tehran University of Medical Sciences, Tehran, Iran and Network of Immunity in Infection, Malignancy and Autoimmunity (NIIMA), Universal Scientific Education and Research Network (USERN), Stockholm, Sweden
| | - Gaurav Chauhan
- School of Engineering and Sciences, Tecnologico de Monterrey, Av. Eugenio Garza Sada 2501, Sur, 64849, Monterrey, NL, Mexico Tecnológico De Monterrey, Campus Monterrey, Monterrey, Nuevo León, Mexico
| | - Debmalya Barh
- Centre for Genomics and Applied Gene Technology, Institute of Integrative Omics and Applied Biotechnology (IIOAB), PatnaPatna, India
| | - Elrashdy M Redwan
- King Abdulazizi University, Faculty of Science, Department of Biological Science, Saudi Arabia
| | - Guy W Dayhoff
- Department of Chemistry, College of Art and Sciences, University of South Florida, Tampa, FL, 33620, USA
| | - Nicolas G Bazan
- Neuroscience Center of Excellence, School of Medicine, Louisiana State University Health New Orleans, New Orleans, LA, 70112, USA
| | - Ángel Serrano-Aroca
- Biomaterials and Bioengineering Lab, Translational Research Centre San Alberto Magno, Catholic University of Valencia San Vicente Mártir, C/Guillem de Castro 94, 46001, Valencia, Spain
| | - Amr El-Demerdash
- Natural Products and Medicinal Chemistry Department, Institute de Chimie des Substances Naturelles, Gif-sur-Yvette, France
| | - Yogendra K Mishra
- University of Southern Denmark, Mads Clausen Institute, NanoSYD, Alsion 2, 6400 Sønderborg, Denmark
| | - Giorgio Palu
- Department of Molecular Medicine, University of Padova, Italy
| | - Kazuo Takayama
- Center for IPS Cell Research and Application, Kyoto University, Kyoto, 606-8397, Japan
| | - Adam M Brufsky
- University of Pittsburgh School of Medicine, Department of Medicine, Division of Hematology/Oncology, UPMC Hillman Cancer Center, Pittsburgh, PA, USA
| | - Murtaza M Tambuwala
- School of Pharmacy and Pharmaceutical Science, Ulster University, Coleraine BT52 1SA, Northern Ireland, UK.
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Schmitt C, Rasch F, Cossais F, Held-Feindt J, Lucius R, Vázquez AR, Nia AS, Lohe MR, Feng X, Mishra YK, Adelung R, Schütt F, Hattermann K. Glial cell responses on tetrapod-shaped graphene oxide and reduced graphene oxide 3D scaffolds in brain in vitro and ex vivo models of indirect contact. Biomed Mater 2020; 16:015008. [DOI: 10.1088/1748-605x/aba796] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Rodrigues J, Hoppe M, Ben Sedrine N, Wolff N, Duppel V, Kienle L, Adelung R, Mishra YK, Correia MR, Monteiro T. ZnAl 2O 4 decorated Al-doped ZnO tetrapodal 3D networks: microstructure, Raman and detailed temperature dependent photoluminescence analysis. Nanoscale Adv 2020; 2:2114-2126. [PMID: 36132514 PMCID: PMC9417638 DOI: 10.1039/c9na00730j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Accepted: 03/18/2020] [Indexed: 06/15/2023]
Abstract
3D networks of Al-doped ZnO tetrapods decorated with ZnAl2O4 particles synthesised by the flame transport method were investigated in detail using optical techniques combined with morphological/structural characterisation. Low temperature photoluminescence (PL) measurements revealed spectra dominated by near band edge (NBE) recombination in the UV region, together with broad visible bands whose peak positions shift depending on the ZnO : Al mixing ratios. A close inspection of the NBE region evidences the effective doping of the ZnO structures with Al, as corroborated by the broadening and shift of its peak position towards the expected energy associated with the exciton bound to Al. Both temperature and excitation density-dependent PL results pointed to an overlap of multiple optical centres contributing to the broad visible band, with the peak position dependent on the Al content. While in the reference sample the wavelength of the green band remained unchanged with temperature, in the case of the composites, the deep level emission showed a blue shift with increasing temperature, likely due to distinct thermal quenching of the overlapping emitting centres. This assumption was further validated by the time-resolved PL data, which clearly exposed the presence of more than one optical centre in this spectral region. PL excitation analysis demonstrated that the luminescence features of the Al-doped ZnO/ZnAl2O4 composites revealed noticeable changes not only in deep level recombination, but also in the material's bandgap when compared with the ZnO reference sample. At room temperature, the ZnO reference sample exhibited free exciton resonance at ∼3.29 eV, whereas the peak position for the Al-doped ZnO/ZnAl2O4 samples occurred at ∼3.38 eV due to the Burstein-Moss shift, commonly observed in heavily doped semiconductors. Considering the energy shift observed and assuming a parabolic conduction band, a carrier concentration of ∼1.82 ×1019 cm-3 was estimated for the Al-doped ZnO/ZnAl2O4 samples.
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Affiliation(s)
- Joana Rodrigues
- i3N & Physics Department, Universidade de Aveiro 3810-193 Aveiro Portugal
| | - Matthias Hoppe
- Functional Nanomaterials, Institute for Materials Science, Kiel University Kaiserstr. 2 D-24143, Kiel Germany
| | - Nabiha Ben Sedrine
- i3N & Physics Department, Universidade de Aveiro 3810-193 Aveiro Portugal
| | - Niklas Wolff
- Synthesis and Real Structure, Institute for Materials Science, Kiel University Kaiserstr. 2 D-24143, Kiel Germany
| | - Viola Duppel
- Max Planck Institute for Solid State Research Heisenbergstr. 1 D-70569 Stuttgart Germany
| | - Lorenz Kienle
- Synthesis and Real Structure, Institute for Materials Science, Kiel University Kaiserstr. 2 D-24143, Kiel Germany
| | - Rainer Adelung
- Functional Nanomaterials, Institute for Materials Science, Kiel University Kaiserstr. 2 D-24143, Kiel Germany
| | - Yogendra K Mishra
- Mads Clausen Institute, NanoSYD, University of Southern Denmark Alsion 2 6400 Sønderborg Denmark
| | - Maria R Correia
- i3N & Physics Department, Universidade de Aveiro 3810-193 Aveiro Portugal
| | - Teresa Monteiro
- i3N & Physics Department, Universidade de Aveiro 3810-193 Aveiro Portugal
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9
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Rasch F, Schmitt C, Saure LM, Meyer R, Adamski V, Dengiz D, Scherließ R, Lucius R, Synowitz M, Mishra YK, Hattermann K, Adelung R, Held-Feindt J, Schütt F. Macroscopic Silicone Microchannel Matrix for Tailored Drug Release and Localized Glioblastoma Therapy. ACS Biomater Sci Eng 2020; 6:3388-3397. [DOI: 10.1021/acsbiomaterials.0c00094] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Florian Rasch
- Chair for Functional Nanomaterials, Institute for Materials Science, Kiel University, Kaiser Str. 2, 24143 Kiel, Germany
| | - Christina Schmitt
- Department of Anatomy, Kiel University, Otto-Hahn-Platz 8, 24118 Kiel, Germany
| | - Lena M. Saure
- Chair for Functional Nanomaterials, Institute for Materials Science, Kiel University, Kaiser Str. 2, 24143 Kiel, Germany
| | - Rieke Meyer
- Department of Neurosurgery, University Medical Center Schleswig-Holstein UKSH, Campus Kiel, Arnold-Heller-Str. 3, House D, 24105 Kiel, Germany
| | - Vivian Adamski
- Department of Neurosurgery, University Medical Center Schleswig-Holstein UKSH, Campus Kiel, Arnold-Heller-Str. 3, House D, 24105 Kiel, Germany
| | - Duygu Dengiz
- Chair for Functional Nanomaterials, Institute for Materials Science, Kiel University, Kaiser Str. 2, 24143 Kiel, Germany
| | - Regina Scherließ
- Department of Pharmaceutics and Biopharmaceutics, Kiel University, Grasweg 9a, 24118 Kiel, Germany
| | - Ralph Lucius
- Department of Anatomy, Kiel University, Otto-Hahn-Platz 8, 24118 Kiel, Germany
| | - Michael Synowitz
- Department of Neurosurgery, University Medical Center Schleswig-Holstein UKSH, Campus Kiel, Arnold-Heller-Str. 3, House D, 24105 Kiel, Germany
| | - Yogendra K. Mishra
- Mads Clausen Institute, NanoSYD, University of Southern Denmark, Alsion 2, 6400 Sønderborg, Denmark
| | - Kirsten Hattermann
- Department of Anatomy, Kiel University, Otto-Hahn-Platz 8, 24118 Kiel, Germany
| | - Rainer Adelung
- Chair for Functional Nanomaterials, Institute for Materials Science, Kiel University, Kaiser Str. 2, 24143 Kiel, Germany
| | - Janka Held-Feindt
- Department of Neurosurgery, University Medical Center Schleswig-Holstein UKSH, Campus Kiel, Arnold-Heller-Str. 3, House D, 24105 Kiel, Germany
| | - Fabian Schütt
- Chair for Functional Nanomaterials, Institute for Materials Science, Kiel University, Kaiser Str. 2, 24143 Kiel, Germany
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10
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More MS, Joshi PG, Mishra YK, Khanna PK. Metal complexes driven from Schiff bases and semicarbazones for biomedical and allied applications: a review. Mater Today Chem 2019; 14:100195. [PMID: 32289101 DOI: 10.1016/j.mtchem.2019.08.010] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 08/07/2019] [Accepted: 09/01/2019] [Indexed: 05/26/2023]
Abstract
Schiff bases are versatile organic compounds which are widely used and synthesized by condensation reaction of different amino compound with aldehydes or ketones known as imine. Schiff base ligands are considered as privileged ligands as they are simply synthesized by condensation. They show broad range of application in medicine, pharmacy, coordination chemistry, biological activities, industries, food packages, dyes, and polymer and also used as an O2 detector. Semicarbazone is an imine derivative which is derived from condensation of semicarbazide and suitable aldehyde and ketone. Imine ligand-containing transition metal complexes such as copper, zinc, and cadmium have shown to be excellent precursors for synthesis of metal or metal chalcogenide nanoparticles. In recent years, the researchers have attracted enormous attention toward Schiff bases, semicarbazones, thiosemicarbazones, and their metal complexes owing to numerous applications in pharmacology such as antiviral, antifungal, antimicrobial, antimalarial, antituberculosis, anticancer, anti-HIV, catalytic application in oxidation of organic compounds, and nanotechnology. In this review, we summarize the synthesis, structural, biological, and catalytic application of Schiff bases as well as their metal complexes.
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Key Words
- 2,6-DAPBPTSC, 2,6-diacetylpyridine bis-4-phenyl-3-thiosemicarbazone
- 35-DTBP, 3,5-di-tert-butylphenol
- 3CLpro, 3C-like protease
- ATNR, Amine terminated liquid natural rubber
- ATT, 2-acetylthiophene thiosemicarbazone
- BBPT, Biacetyl bis(4-phenyl-3-thiosemicarbazone)
- BBTSC, Benzyloxybenzaldehyde thiosemicarbazone
- BCG, Bacillus calmette-guérine
- BDT, Benzyldithiosemicarbazone
- BGPT, Bipyridyl glyoxal bis(4-phenyl-3-thiosemicarbazone)
- BMTS, Biacetyl monothiosemicarbazone
- Biological/biomedical activities
- Bipy, 2,2-bipyridine
- CT DNA, Calf thymus deoxyribonucleic acid
- DAPY, 2,3-diamino-pyridine
- DTBP, 2,6-di-tert-butylphenol
- DTBQ, 2,6-di-tert-butyl-4,4′-benzoquinone
- EAC, Enrichlish Ascitices Cells
- HEK-293, Human Embryonic Kidney cells
- HL-60, Human leukemia-60 cell line
- HeLa, immortal cell lines
- HepG2, Hepatic cellular carcinoma cells (Human liver cancer cell line)
- IgG, Immunoglobin G
- K B HCT-8, Human colon cancer cell line
- M-IBDET, N-methylisatin-β-4′,4′-diethylthiosemicarbazone
- MCF-7, Michigan Cancer Foundation-7
- MCF7 cells, Michigan Cancer Foundation-7 (breast cancer cell line)
- MHV, Mouse hepatitis virus
- MLV, Moloney leukemia virus
- MSOPD, N,N-bis(3-methylsalicylidene)-ortho-phenylenediamine
- Metal complexes
- NQSC, Naphthoquinone semicarbazone
- NQTS, ortho-Naphthoquinone thiosemicarbazone
- OLED, Organic light emitting diode
- PAS, p-amino salicylic acid
- PPTS, Picolinealdehyde-4-phenyl-3-thiosemicarbazone
- Phen, 1,10-phenanthroline
- SARS CoV, Severe Acute Respiratory Syndrome coronavirus
- SARS, Severe acute respiratory syndrome
- SB-HAG, Schiff bases of hydroxyamino guanidines
- SK-MEL-30, Human Melanoma Cell Line
- SK-OV-3 cells, Ovarian cancer cell line
- SSB-HAG, salicylaldehyde Schiff bases of HAG
- Schiff base
- Semicarbazone
- TCIDw, Tissue culture Infective Dose
- TTBDQ, 3,5,3′,5′-tetra-tert-butyl-4,4′-diphenoquinone
- VSV, vesicular stomatitis virus
- scCO2, Super-critical carbon dioxide
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Affiliation(s)
- M S More
- Nanochemistry/QDs R & D Laboratory, Department of Applied Chemistry, Defence Institute of Advanced Technology (DIAT), Ministry of Defence, DRDO, Government of India, Girinagar, Pune, 411025, India
| | - P G Joshi
- Nanochemistry/QDs R & D Laboratory, Department of Applied Chemistry, Defence Institute of Advanced Technology (DIAT), Ministry of Defence, DRDO, Government of India, Girinagar, Pune, 411025, India
| | - Y K Mishra
- Institute for Materials Science, Kiel University, Kaiserstrasse. 2, Kiel, 24143, Germany
- NanoSYD, Mads Clausen Institute, University of Southern Denmark, Alsion 2, 6400, Sønderborg, Denmark
| | - P K Khanna
- Nanochemistry/QDs R & D Laboratory, Department of Applied Chemistry, Defence Institute of Advanced Technology (DIAT), Ministry of Defence, DRDO, Government of India, Girinagar, Pune, 411025, India
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11
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Rasch F, Schütt F, Saure LM, Kaps S, Strobel J, Polonskyi O, Nia AS, Lohe MR, Mishra YK, Faupel F, Kienle L, Feng X, Adelung R. Wet-Chemical Assembly of 2D Nanomaterials into Lightweight, Microtube-Shaped, and Macroscopic 3D Networks. ACS Appl Mater Interfaces 2019; 11:44652-44663. [PMID: 31686498 PMCID: PMC7192525 DOI: 10.1021/acsami.9b16565] [Citation(s) in RCA: 12] [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: 05/12/2023]
Abstract
Despite tremendous efforts toward fabrication of three-dimensional macrostructures of two-dimensional (2D) materials, the existing approaches still lack sufficient control over microscopic (morphology, porosity, pore size) and macroscopic (shape, size) properties of the resulting structures. In this work, a facile fabrication method for the wet-chemical assembly of carbon 2D nanomaterials into macroscopic networks of interconnected, hollow microtubes is introduced. As demonstrated for electrochemically exfoliated graphene, graphene oxide, and reduced graphene oxide, the approach allows for the preparation of highly porous (> 99.9%) and lightweight (<2 mg cm-3) aeromaterials with tailored porosity and pore size as well as tailorable shape and size. The unique tubelike morphology with high aspect ratio enables ultralow-percolation-threshold graphene composites (0.03 S m-1, 0.05 vol%) which even outperform most of the carbon nanotube-based composites, as well as highly conductive aeronetworks (8 S m-1, 4 mg cm-3). On top of that, long-term compression cycling of the aeronetworks demonstrates remarkable mechanical stability over 10 000 cycles, even though no chemical cross-linking is employed. The developed strategy could pave the way for fabrication of various macrostructures of 2D nanomaterials with defined shape, size, as well as micro- and nanostructure, crucial for numerous applications such as batteries, supercapacitors, and filters.
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Affiliation(s)
- Florian Rasch
- Chair for Functional Nanomaterials, Institute for
Materials Science, Chair for Synthesis
and Real Structure, Institute for Materials Science,
and Chair for Multicomponent
Materials, Institute for Materials Science, Kiel University, Kaiserstr. 2, 24143 Kiel, Germany
| | - Fabian Schütt
- Chair for Functional Nanomaterials, Institute for
Materials Science, Chair for Synthesis
and Real Structure, Institute for Materials Science,
and Chair for Multicomponent
Materials, Institute for Materials Science, Kiel University, Kaiserstr. 2, 24143 Kiel, Germany
- E-mail:
| | - Lena M. Saure
- Chair for Functional Nanomaterials, Institute for
Materials Science, Chair for Synthesis
and Real Structure, Institute for Materials Science,
and Chair for Multicomponent
Materials, Institute for Materials Science, Kiel University, Kaiserstr. 2, 24143 Kiel, Germany
- Chair
of Engineering Mechanics, Brandenburg University
of Technology Cottbus-Senftenberg, Großenhainer Straße 57, 01968 Senftenberg, Germany
| | - Sören Kaps
- Chair for Functional Nanomaterials, Institute for
Materials Science, Chair for Synthesis
and Real Structure, Institute for Materials Science,
and Chair for Multicomponent
Materials, Institute for Materials Science, Kiel University, Kaiserstr. 2, 24143 Kiel, Germany
| | - Julian Strobel
- Chair for Functional Nanomaterials, Institute for
Materials Science, Chair for Synthesis
and Real Structure, Institute for Materials Science,
and Chair for Multicomponent
Materials, Institute for Materials Science, Kiel University, Kaiserstr. 2, 24143 Kiel, Germany
| | - Oleksandr Polonskyi
- Chair for Functional Nanomaterials, Institute for
Materials Science, Chair for Synthesis
and Real Structure, Institute for Materials Science,
and Chair for Multicomponent
Materials, Institute for Materials Science, Kiel University, Kaiserstr. 2, 24143 Kiel, Germany
| | - Ali Shaygan Nia
- Department
of Chemistry and Food Chemistry, Center for Advancing Electronics
Dresden (cfaed), Technische Universität
Dresden, 01062 Dresden, Germany
| | - Martin R. Lohe
- Department
of Chemistry and Food Chemistry, Center for Advancing Electronics
Dresden (cfaed), Technische Universität
Dresden, 01062 Dresden, Germany
| | - Yogendra K. Mishra
- NanoSYD,
Mads Clausen Institute, University of Southern
Denmark, Alsion 2, DK-6400 Sønderborg, Denmark
| | - Franz Faupel
- Chair for Functional Nanomaterials, Institute for
Materials Science, Chair for Synthesis
and Real Structure, Institute for Materials Science,
and Chair for Multicomponent
Materials, Institute for Materials Science, Kiel University, Kaiserstr. 2, 24143 Kiel, Germany
| | - Lorenz Kienle
- Chair for Functional Nanomaterials, Institute for
Materials Science, Chair for Synthesis
and Real Structure, Institute for Materials Science,
and Chair for Multicomponent
Materials, Institute for Materials Science, Kiel University, Kaiserstr. 2, 24143 Kiel, Germany
| | - Xinliang Feng
- Department
of Chemistry and Food Chemistry, Center for Advancing Electronics
Dresden (cfaed), Technische Universität
Dresden, 01062 Dresden, Germany
| | - Rainer Adelung
- Chair for Functional Nanomaterials, Institute for
Materials Science, Chair for Synthesis
and Real Structure, Institute for Materials Science,
and Chair for Multicomponent
Materials, Institute for Materials Science, Kiel University, Kaiserstr. 2, 24143 Kiel, Germany
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12
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Wolff N, Hrkac V, Ditto JJ, Duppel V, Mishra YK, Johnson DC, Adelung R, Kienle L. Crystallography at the nanoscale: planar defects in ZnO nanospikes. J Appl Crystallogr 2019; 52:1009-1015. [PMID: 31636519 PMCID: PMC6782080 DOI: 10.1107/s1600576719009415] [Citation(s) in RCA: 3] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Accepted: 07/01/2019] [Indexed: 11/10/2022] Open
Abstract
The examination of anisotropic nanostructures, such as wires, platelets or spikes, inside a transmission electron microscope is normally performed only in plan view. However, intrinsic defects such as growth twin interfaces could occasionally be concealed from direct observation for geometric reasons, leading to superposition. This article presents the shadow-focused ion-beam technique to prepare multiple electron-beam-transparent cross-section specimens of ZnO nanospikes, via a procedure which could be readily extended to other anisotropic structures. In contrast with plan-view data of the same nanospikes, here the viewing direction allows the examination of defects without superposition. By this method, the coexistence of two twin configurations inside the wurtzite-type structure is observed, namely and , which were not identified during the plan-view observations owing to superposition of the domains. The defect arrangement could be the result of coalescence twinning of crystalline nuclei formed on the partially molten Zn substrate during the flame-transport synthesis. Three-dimensional defect models of the twin interface structures have been derived and are correlated with the plan-view investigations by simulation.
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Affiliation(s)
- Niklas Wolff
- Synthesis and Real Structure and Institute for Material Science, Kiel University, Kaiserstrasse 2, Kiel 24143, Germany
| | - Viktor Hrkac
- Synthesis and Real Structure and Institute for Material Science, Kiel University, Kaiserstrasse 2, Kiel 24143, Germany
| | - Jeffrey J Ditto
- Department of Chemistry and Biochemistry and Materials Science Institute, University of Oregon, Eugene, OR 97403, USA
| | - Viola Duppel
- Nanochemistry, Max Planck Institute for Solid State Research, Heisenbergstrasse 1, Stuttgart 70569, Germany
| | - Yogendra K Mishra
- Functional Nanomaterials and Institute for Material Science, Kiel University, Kaiserstrasse 2, Kiel 24143, Germany
| | - David C Johnson
- Department of Chemistry and Biochemistry and Materials Science Institute, University of Oregon, Eugene, OR 97403, USA
| | - Rainer Adelung
- Functional Nanomaterials and Institute for Material Science, Kiel University, Kaiserstrasse 2, Kiel 24143, Germany
| | - Lorenz Kienle
- Synthesis and Real Structure and Institute for Material Science, Kiel University, Kaiserstrasse 2, Kiel 24143, Germany
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13
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Rodrigues J, Smazna D, Ben Sedrine N, Nogales E, Adelung R, Mishra YK, Mendez B, Correia MR, Monteiro T. Probing surface states in C 60 decorated ZnO microwires: detailed photoluminescence and cathodoluminescence investigations. Nanoscale Adv 2019; 1:1516-1526. [PMID: 36132605 PMCID: PMC9419209 DOI: 10.1039/c8na00296g] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Accepted: 01/31/2019] [Indexed: 06/15/2023]
Abstract
ZnO microwires synthesised by the flame transport method and decorated with C60 clusters were studied in detail by photoluminescence (PL) and cathodoluminescence (CL) techniques. The optical investigations suggest that the enhanced near band edge recombination observed in the ZnO/C60 composites is attributed to the reduction of the ZnO band tail states in the presence of C60. Well-resolved free and bound excitons recombination, as well as 3.31 eV emission, are observed with increasing amount of C60 flooding when compared with the ZnO reference sample. Moreover, a shift of the broad visible emission to lower energies occurs with increasing C60 content. In fact, this band was found to be composed by two optical centres peaked in the green and orange/red spectral regions, presenting different lifetimes. The orange/red band exhibits faster lifetime decay, in addition to a more pronounced shift to lower energies, while the peak position of the green emission only shows a slight change. The overall redshift of the broad visible band is further enhanced by the change in the relative intensity of the mentioned optical centres, depending on the excitation intensity and on the C60 flooding. These results suggest the possibility of controlling/tuning the visible emission outcome by increasing the C60 amount on the ZnO surface due to the surface states present in the semiconductor. An adequate control of such phenomena may have quite beneficial implications when sensing applications are envisaged.
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Affiliation(s)
- Joana Rodrigues
- Departamento de Física & I3N, Universidade de Aveiro 3810-193 Aveiro Portugal
| | - Daria Smazna
- Functional Nanomaterials, Institute for Materials Science, Kiel University Kaiserstr. 2, D-24143 Kiel Germany
| | - Nabiha Ben Sedrine
- Departamento de Física & I3N, Universidade de Aveiro 3810-193 Aveiro Portugal
| | - Emilio Nogales
- Departamento de Física de Materiales, Facultad de Ciencias Físicas, Universidad Complutense de Madrid E-28040 Madrid Spain
| | - Rainer Adelung
- Functional Nanomaterials, Institute for Materials Science, Kiel University Kaiserstr. 2, D-24143 Kiel Germany
| | - Yogendra K Mishra
- Functional Nanomaterials, Institute for Materials Science, Kiel University Kaiserstr. 2, D-24143 Kiel Germany
| | - Bianchi Mendez
- Departamento de Física de Materiales, Facultad de Ciencias Físicas, Universidad Complutense de Madrid E-28040 Madrid Spain
| | - Maria R Correia
- Departamento de Física & I3N, Universidade de Aveiro 3810-193 Aveiro Portugal
| | - Teresa Monteiro
- Departamento de Física & I3N, Universidade de Aveiro 3810-193 Aveiro Portugal
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14
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Faraji N, Adelung R, Mishra YK, Seidel J. Nanoscale electromechanical and electronic properties of free-standing ZnO nano- and microstructured platelets. Nanotechnology 2017; 28:405701. [PMID: 28832338 DOI: 10.1088/1361-6528/aa87f8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The piezoelectric response, conductivity and surface potential of individual grains and grain boundaries in free-standing polycrystalline ZnO nano- and microstructured platelets is studied using scanning probe based techniques on the nanoscale. We find that applied dc electric fields can alter the piezoresponse in individual grains, as well as the local nanoscale conductivity, and invert the relative surface potential at grain boundaries. This can be attributed to defect accumulation at the grain surfaces and at grain boundaries and the associated density of carriers. Together with recently observed below-bandgap photoconductivity at grain boundaries, the presented observation opens new venues for potential nanoelectronic applications that rely on grain and grain boundary engineering and functionality in a wide-bandgap transparent material.
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Affiliation(s)
- N Faraji
- School of Materials Science and Engineering, UNSW Sydney, Sydney, NSW 2052, Australia
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15
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Lupan O, Postica V, Gröttrup J, Mishra AK, de Leeuw NH, Carreira JFC, Rodrigues J, Ben Sedrine N, Correia MR, Monteiro T, Cretu V, Tiginyanu I, Smazna D, Mishra YK, Adelung R. Hybridization of Zinc Oxide Tetrapods for Selective Gas Sensing Applications. ACS Appl Mater Interfaces 2017. [PMID: 28111948 DOI: 10.1002/adfm.201604676] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
In this work, the exceptionally improved sensing capability of highly porous three-dimensional (3-D) hybrid ceramic networks toward reducing gases is demonstrated for the first time. The 3-D hybrid ceramic networks are based on doped metal oxides (MexOy and ZnxMe1-xOy, Me = Fe, Cu, Al) and alloyed zinc oxide tetrapods (ZnO-T) forming numerous junctions and heterojunctions. A change in morphology of the samples and formation of different complex microstructures is achieved by mixing the metallic (Fe, Cu, Al) microparticles with ZnO-T grown by the flame transport synthesis (FTS) in different weight ratios (ZnO-T:Me, e.g., 20:1) followed by subsequent thermal annealing in air. The gas sensing studies reveal the possibility to control and change/tune the selectivity of the materials, depending on the elemental content ratio and the type of added metal oxide in the 3-D ZnO-T hybrid networks. While pristine ZnO-T networks showed a good response to H2 gas, a change/tune in selectivity to ethanol vapor with a decrease in optimal operating temperature was observed in the networks hybridized with Fe-oxide and Cu-oxide. In the case of hybridization with ZnAl2O4, an improvement of H2 gas response (to ∼7.5) was reached at lower doping concentrations (20:1), whereas the increase in concentration of ZnAl2O4 (ZnO-T:Al, 10:1), the selectivity changes to methane CH4 gas (response is about 28). Selectivity tuning to different gases is attributed to the catalytic properties of the metal oxides after hybridization, while the gas sensitivity improvement is mainly associated with additional modulation of the electrical resistance by the built-in potential barriers between n-n and n-p heterojunctions, during adsorption and desorption of gaseous species. Density functional theory based calculations provided the mechanistic insights into the interactions between different hybrid networks and gas molecules to support the experimentally observed results. The studied networked materials and sensor structures performances would provide particular advantages in the field of fundamental research, applied physics studies, and industrial and ecological applications.
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Affiliation(s)
- O Lupan
- Functional Nanomaterials, Institute for Materials Science, Kiel University , Kaiserstrasse 2, D-24143, Kiel, Germany
- Department of Microelectronics and Biomedical Engineering, Technical University of Moldova , 168 Stefan cel Mare Avenue, MD-2004 Chisinau, Republic of Moldova
| | - V Postica
- Department of Microelectronics and Biomedical Engineering, Technical University of Moldova , 168 Stefan cel Mare Avenue, MD-2004 Chisinau, Republic of Moldova
| | - J Gröttrup
- Functional Nanomaterials, Institute for Materials Science, Kiel University , Kaiserstrasse 2, D-24143, Kiel, Germany
| | - A K Mishra
- Department of Chemistry, University College London , 20 Gordon Street, London WC1H 0AJ, United Kingdom
- Research & Development, University of Petroleum and Energy Studies (UPES) , Bidholi, Dehradun 248007, India
| | - N H de Leeuw
- Department of Chemistry, University College London , 20 Gordon Street, London WC1H 0AJ, United Kingdom
- School of Chemistry, Cardiff University , Main Building, Park Place, Cardiff CF10 3AT, United Kingdom
| | - J F C Carreira
- Department of Physics and I3N, Institute for Nanostructures, Nanomodelling and Nanofabrication, University of Aveiro , 3810-193 Aveiro, Portugal
| | - J Rodrigues
- Department of Physics and I3N, Institute for Nanostructures, Nanomodelling and Nanofabrication, University of Aveiro , 3810-193 Aveiro, Portugal
| | - N Ben Sedrine
- Department of Physics and I3N, Institute for Nanostructures, Nanomodelling and Nanofabrication, University of Aveiro , 3810-193 Aveiro, Portugal
| | - M R Correia
- Department of Physics and I3N, Institute for Nanostructures, Nanomodelling and Nanofabrication, University of Aveiro , 3810-193 Aveiro, Portugal
| | - T Monteiro
- Department of Physics and I3N, Institute for Nanostructures, Nanomodelling and Nanofabrication, University of Aveiro , 3810-193 Aveiro, Portugal
| | - V Cretu
- Department of Microelectronics and Biomedical Engineering, Technical University of Moldova , 168 Stefan cel Mare Avenue, MD-2004 Chisinau, Republic of Moldova
| | - I Tiginyanu
- Department of Microelectronics and Biomedical Engineering, Technical University of Moldova , 168 Stefan cel Mare Avenue, MD-2004 Chisinau, Republic of Moldova
| | - D Smazna
- Functional Nanomaterials, Institute for Materials Science, Kiel University , Kaiserstrasse 2, D-24143, Kiel, Germany
| | - Y K Mishra
- Functional Nanomaterials, Institute for Materials Science, Kiel University , Kaiserstrasse 2, D-24143, Kiel, Germany
| | - R Adelung
- Functional Nanomaterials, Institute for Materials Science, Kiel University , Kaiserstrasse 2, D-24143, Kiel, Germany
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Lupan O, Postica V, Gröttrup J, Mishra AK, de Leeuw NH, Carreira JFC, Rodrigues J, Ben Sedrine N, Correia MR, Monteiro T, Cretu V, Tiginyanu I, Smazna D, Mishra YK, Adelung R. Hybridization of Zinc Oxide Tetrapods for Selective Gas Sensing Applications. ACS Appl Mater Interfaces 2017; 9:4084-4099. [PMID: 28111948 DOI: 10.1021/acsami.6b11337] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
In this work, the exceptionally improved sensing capability of highly porous three-dimensional (3-D) hybrid ceramic networks toward reducing gases is demonstrated for the first time. The 3-D hybrid ceramic networks are based on doped metal oxides (MexOy and ZnxMe1-xOy, Me = Fe, Cu, Al) and alloyed zinc oxide tetrapods (ZnO-T) forming numerous junctions and heterojunctions. A change in morphology of the samples and formation of different complex microstructures is achieved by mixing the metallic (Fe, Cu, Al) microparticles with ZnO-T grown by the flame transport synthesis (FTS) in different weight ratios (ZnO-T:Me, e.g., 20:1) followed by subsequent thermal annealing in air. The gas sensing studies reveal the possibility to control and change/tune the selectivity of the materials, depending on the elemental content ratio and the type of added metal oxide in the 3-D ZnO-T hybrid networks. While pristine ZnO-T networks showed a good response to H2 gas, a change/tune in selectivity to ethanol vapor with a decrease in optimal operating temperature was observed in the networks hybridized with Fe-oxide and Cu-oxide. In the case of hybridization with ZnAl2O4, an improvement of H2 gas response (to ∼7.5) was reached at lower doping concentrations (20:1), whereas the increase in concentration of ZnAl2O4 (ZnO-T:Al, 10:1), the selectivity changes to methane CH4 gas (response is about 28). Selectivity tuning to different gases is attributed to the catalytic properties of the metal oxides after hybridization, while the gas sensitivity improvement is mainly associated with additional modulation of the electrical resistance by the built-in potential barriers between n-n and n-p heterojunctions, during adsorption and desorption of gaseous species. Density functional theory based calculations provided the mechanistic insights into the interactions between different hybrid networks and gas molecules to support the experimentally observed results. The studied networked materials and sensor structures performances would provide particular advantages in the field of fundamental research, applied physics studies, and industrial and ecological applications.
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Affiliation(s)
- O Lupan
- Functional Nanomaterials, Institute for Materials Science, Kiel University , Kaiserstrasse 2, D-24143, Kiel, Germany
- Department of Microelectronics and Biomedical Engineering, Technical University of Moldova , 168 Stefan cel Mare Avenue, MD-2004 Chisinau, Republic of Moldova
| | - V Postica
- Department of Microelectronics and Biomedical Engineering, Technical University of Moldova , 168 Stefan cel Mare Avenue, MD-2004 Chisinau, Republic of Moldova
| | - J Gröttrup
- Functional Nanomaterials, Institute for Materials Science, Kiel University , Kaiserstrasse 2, D-24143, Kiel, Germany
| | - A K Mishra
- Department of Chemistry, University College London , 20 Gordon Street, London WC1H 0AJ, United Kingdom
- Research & Development, University of Petroleum and Energy Studies (UPES) , Bidholi, Dehradun 248007, India
| | - N H de Leeuw
- Department of Chemistry, University College London , 20 Gordon Street, London WC1H 0AJ, United Kingdom
- School of Chemistry, Cardiff University , Main Building, Park Place, Cardiff CF10 3AT, United Kingdom
| | - J F C Carreira
- Department of Physics and I3N, Institute for Nanostructures, Nanomodelling and Nanofabrication, University of Aveiro , 3810-193 Aveiro, Portugal
| | - J Rodrigues
- Department of Physics and I3N, Institute for Nanostructures, Nanomodelling and Nanofabrication, University of Aveiro , 3810-193 Aveiro, Portugal
| | - N Ben Sedrine
- Department of Physics and I3N, Institute for Nanostructures, Nanomodelling and Nanofabrication, University of Aveiro , 3810-193 Aveiro, Portugal
| | - M R Correia
- Department of Physics and I3N, Institute for Nanostructures, Nanomodelling and Nanofabrication, University of Aveiro , 3810-193 Aveiro, Portugal
| | - T Monteiro
- Department of Physics and I3N, Institute for Nanostructures, Nanomodelling and Nanofabrication, University of Aveiro , 3810-193 Aveiro, Portugal
| | - V Cretu
- Department of Microelectronics and Biomedical Engineering, Technical University of Moldova , 168 Stefan cel Mare Avenue, MD-2004 Chisinau, Republic of Moldova
| | - I Tiginyanu
- Department of Microelectronics and Biomedical Engineering, Technical University of Moldova , 168 Stefan cel Mare Avenue, MD-2004 Chisinau, Republic of Moldova
| | - D Smazna
- Functional Nanomaterials, Institute for Materials Science, Kiel University , Kaiserstrasse 2, D-24143, Kiel, Germany
| | - Y K Mishra
- Functional Nanomaterials, Institute for Materials Science, Kiel University , Kaiserstrasse 2, D-24143, Kiel, Germany
| | - R Adelung
- Functional Nanomaterials, Institute for Materials Science, Kiel University , Kaiserstrasse 2, D-24143, Kiel, Germany
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Hölken I, Hoppe M, Mishra YK, Gorb SN, Adelung R, Baum MJ. Complex shaped ZnO nano- and microstructure based polymer composites: mechanically stable and environmentally friendly coatings for potential antifouling applications. Phys Chem Chem Phys 2016; 18:7114-23. [PMID: 26883913 DOI: 10.1039/c5cp07451g] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Since the prohibition of tributyltin (TBT)-based antifouling paints in 2008, the development of environmentally compatible and commercially realizable alternatives is a crucial issue. Cost effective fabrication of antifouling paints with desired physical and biocompatible features is simultaneously required and recent developments in the direction of inorganic nanomaterials could play a major role. In the present work, a solvent free polymer/particle-composite coating based on two component polythiourethane (PTU) and tetrapodal shaped ZnO (t-ZnO) nano- and microstructures has been synthesized and studied with respect to mechanical, chemical and biocompatibility properties. Furthermore, antifouling tests have been carried out in artificial seawater tanks. Four different PTU/t-ZnO composites with various t-ZnO filling fractions (0 wt%, 1 wt%, 5 wt%, 10 wt%) were prepared and the corresponding tensile, hardness, and pull-off test results revealed that the composite filled with 5 wt% t-ZnO exhibits the strongest mechanical properties. Surface free energy (SFE) studies using contact angle measurements showed that the SFE value decreases with an increase in t-ZnO filler amounts. The influence of t-ZnO on the polymerization reaction was confirmed by Fourier transform infrared-spectroscopy measurements and thermogravimetric analysis. The immersion tests demonstrated that fouling behavior of the PTU/t-ZnO composite with a 1 wt% t-ZnO filler has been decreased in comparison to pure PTU. The composite with a 5 wt% t-ZnO filler showed almost no biofouling.
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Affiliation(s)
- Iris Hölken
- Functional Nanomaterials, Institute for Materials Science, Faculty of Engineering, University of Kiel, Kaiserstr. 2, D-24143, Kiel, Germany.
| | - Mathias Hoppe
- Functional Nanomaterials, Institute for Materials Science, Faculty of Engineering, University of Kiel, Kaiserstr. 2, D-24143, Kiel, Germany.
| | - Yogendra K Mishra
- Functional Nanomaterials, Institute for Materials Science, Faculty of Engineering, University of Kiel, Kaiserstr. 2, D-24143, Kiel, Germany.
| | - Stanislav N Gorb
- Functional Morphology and Biomechanics, Zoological Institute, Department of Zoology, University of Kiel, Botanischen Garten 1-9, D - 24098 Kiel, Germany
| | - Rainer Adelung
- Functional Nanomaterials, Institute for Materials Science, Faculty of Engineering, University of Kiel, Kaiserstr. 2, D-24143, Kiel, Germany.
| | - Martina J Baum
- Functional Nanomaterials, Institute for Materials Science, Faculty of Engineering, University of Kiel, Kaiserstr. 2, D-24143, Kiel, Germany.
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Trailokya A, Hiremath JS, Sawhney J, Mishra YK, Kanhere V, Srinivasa R, Tiwaskar M. Acenocoumarol: A Review of Anticoagulant Efficacy and Safety. J Assoc Physicians India 2016; 64:88-93. [PMID: 27730796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Anticoagulant treatment is required for the treatment and prevention of thromboembolic disorders. Vitamin K antagonists are commonly used oral anticoagulants worldwide. Acenocoumarol is mono-coumarin derivative with racemic mixture of R (+) and S (-) enantiomers. Efficacy and safety of acenocoumarol has been evaluated in atrial fibrillation, cardiac valve replacement, after myocardial infarction, treatment of deep vein thrombosis, after major surgeries and after critical illness requiring prolonged hospitalization. Acenocoumarol is effective and safe in all age groups. It offers an advantage over warfarin in terms of better stability of anti-coagulant effect. Due to its economic advantage acenocoumarol may be suitable oral anticoagulant for long term use in countries like India.
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Affiliation(s)
- Abhijit Trailokya
- Medical Services Division, Abbott Healthcare Private Limited, Mumbai, Maharashtra
| | - J S Hiremath
- Director, Cath Lab, Ruby Hall Clinic, Pune, Maharashtra
| | | | - Y K Mishra
- Director, Department of Cardiovascular Surgery, Fortis Escorts Heart Institute & Research Centre, Delhi
| | - Vivek Kanhere
- Consultant Cardiac Surgeon, Chirayu Cardiac Centre, Bhopal
| | - R Srinivasa
- Senior Professor of Neurology and Head, Dept. of Neurology, MS Ramaiah Medical college and Hospitals, Bangalore, Karnataka
| | - Mangesh Tiwaskar
- Consultant Physician, Asian Heart Institute & Research Centre, Karuna Hospital, Mumbai, Maharashtra
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Dwivedi S, Wahab R, Khan F, Mishra YK, Musarrat J, Al-Khedhairy AA. Reactive oxygen species mediated bacterial biofilm inhibition via zinc oxide nanoparticles and their statistical determination. PLoS One 2014; 9:e111289. [PMID: 25402188 PMCID: PMC4234364 DOI: 10.1371/journal.pone.0111289] [Citation(s) in RCA: 196] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2014] [Accepted: 09/29/2014] [Indexed: 02/03/2023] Open
Abstract
The formation of bacterial biofilm is a major challenge in clinical applications. The main aim of this study is to describe the synthesis, characterization and biocidal potential of zinc oxide nanoparticles (NPs) against bacterial strain Pseudomonas aeruginosa. These nanoparticles were synthesized via soft chemical solution process in a very short time and their structural properties have been investigated in detail by using X-ray diffraction and transmission electron microscopy measurements. In this work, the potential of synthesized ZnO-NPs (∼10–15 nm) has been assessed in-vitro inhibition of bacteria and the formation of their biofilms was observed using the tissue culture plate assays. The crystal violet staining on biofilm formation and its optical density revealed the effect on biofilm inhibition. The NPs at a concentration of 100 µg/mL significantly inhibited the growth of bacteria and biofilm formation. The biofilm inhibition by ZnO-NPs was also confirmed via bio-transmission electron microscopy (Bio-TEM). The Bio-TEM analysis of ZnO-NPs treated bacteria confirmed the deformation and damage of cells. The bacterial growth in presence of NPs concluded the bactericidal ability of NPs in a concentration dependent manner. It has been speculated that the antibacterial activity of NPs as a surface coating material, could be a feasible approach for controlling the pathogens. Additionally, the obtained bacterial solution data is also in agreement with the results from statistical analytical methods.
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Affiliation(s)
- Sourabh Dwivedi
- Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Rizwan Wahab
- Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia
- * E-mail:
| | - Farheen Khan
- Department of Chemistry, Aligarh Muslim University, Aligarh, India
| | - Yogendra K. Mishra
- Functional Nanomaterials, Institute for Materials Science, University of Kiel, Kiel, Germany
| | - Javed Musarrat
- Department of Agricultural Microbiology, Faculty of Agricultural Sciences, Aligarh Muslim University, Aligarh, India
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Wahab R, Dwivedi S, Khan F, Mishra YK, Hwang IH, Shin HS, Musarrat J, Al-Khedhairy AA. Statistical analysis of gold nanoparticle-induced oxidative stress and apoptosis in myoblast (C2C12) cells. Colloids Surf B Biointerfaces 2014; 123:664-72. [PMID: 25456994 DOI: 10.1016/j.colsurfb.2014.10.012] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2014] [Revised: 09/29/2014] [Accepted: 10/04/2014] [Indexed: 11/16/2022]
Abstract
Nanoscale gold particles (Au-NPs) with a diameter below 20nm are notably important candidates for various important applications because of their extraordinary quantum size effects. Their high surface area-to-volume ratio facilitates their very high reactivities; therefore, they can be utilised in different ways in biomedical applications. For example, these nanoparticles can penetrate into cells and bind with proteins or DNA and are therefore potential nanostructures employed for sensing and detecting various biological identities. In the present work, we synthesised Au-NPs via a colloidal process using chloroauric acid (HAuCl4·4H2O) and trisodium citrate dihydrate (N3C6H5O7) as a reducing agent. The shape evolution and the structural properties of these NPs were investigated in detail using TEM and high resolution HR-TEM investigations. Different doses of Au NPs have been applied to treat C2C12 myoblast cells in a 24-h incubation period, and a dose-dependent study has also been performed. The cells were cultivated in DMEM with FBS and antibiotics (strepto-penicillin) at 37°C in a 5% humidified environment of CO2 and 95% air. Cell viability analysis using MTT assays revealed that increased concentration of Au NPs (100-1000 ng/mL) resulted in a decreased density of cells. The amount of reactive oxygen species (ROS) in C2C12 cells analysed with Au-NPs (in a dose-dependent manner), and the RT-PCR data demonstrated the up-regulation of caspase-3 and caspase-7 genes in C2C12 cells after treatment with Au-NPs. These results have been confirmed by detailed confocal microscopy (CLSM) studies. In addition, the quantitative analysis of the Au-NPs was also confirmed by statistical analytical parameters, such as precision, accuracy, linearity, limits of detection (LOD) and limit of quantitation (LOQ), quantitative recoveries and relative standard deviation (RSD), and the analyses again exhibited a significant and large effect of Au NPs on C2C12 cells.
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Affiliation(s)
- Rizwan Wahab
- A.R.Al-Jeraisy, Chair for DNA Research, Department of Zoology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia.
| | - Sourabh Dwivedi
- A.R.Al-Jeraisy, Chair for DNA Research, Department of Zoology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Farheen Khan
- Department of Chemistry, Aligarh Muslim University, Aligarh 202002, India
| | - Yogendra K Mishra
- Functional Nanomaterials, Institute for Materials Science, University of Kiel, Kaiser Str. 2, 24143 Kiel, Germany
| | - I H Hwang
- Department of Animal Sciences and Biotechnology, Chonbuk National University Jeonju, Jeollabuk-do 561-756, Republic of Korea
| | - Hyung-Shik Shin
- Energy Materials and Surface Science Laboratory, Solar Energy Research Centre, School of Chemical Engineering, Chonbuk National University, Jeonju 561-756, Republic of Korea
| | - Javed Musarrat
- Department of Agricultural Microbiology, Faculty of Agricultural Sciences, Aligarh Muslim University, Aligarh 202002, India
| | - Abdulaziz A Al-Khedhairy
- A.R.Al-Jeraisy, Chair for DNA Research, Department of Zoology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
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Reimer T, Paulowicz I, Röder R, Kaps S, Lupan O, Chemnitz S, Benecke W, Ronning C, Adelung R, Mishra YK. Single step integration of ZnO nano- and microneedles in Si trenches by novel flame transport approach: whispering gallery modes and photocatalytic properties. ACS Appl Mater Interfaces 2014; 6:7806-15. [PMID: 24773290 DOI: 10.1021/am5010877] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Direct growth of quasi-one-dimensional nano- and microstructures in desired places of complex shaped substrates using simple growth methods is highly demanded aspect for various applications. In this work, we have demonstrated direct integration of ZnO nano- and microneedles into Si trenches by a novel flame transport synthesis approach in a single fabrication step. Growth of partially and fully covered or filled trenches in Si substrate with ZnO nano- and microneedles has been investigated and is discussed here. Detailed microstructural studies revealed the evolution of the ZnO nano- and microneedles as well as their firm adhesion to the wall in the Si trenches. Micro-photoluminescence measurements at different locations along the length of needles confirmed the good crystalline quality and also the presence of whispering gallery mode resonances on the top of needles due to their hexagonal shape. Faceted ZnO nano- and microstructures are also very important candidates with regard to photocatalytic activity. First, photocatalytic measurements from the grown ZnO nano- and microneedles have shown strong degradation of methylene blue, which demonstrate that these structures can be of significant interest for photocatalysis and self-cleaning chromatography columns.
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Affiliation(s)
- Tim Reimer
- Technology for Silicon Based Micro- and Nanosystems, Institute for Electrical Engineering University of Kiel , Kaiserstr. 2, D-24143 Kiel, Germany
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Papavlassopoulos H, Mishra YK, Kaps S, Paulowicz I, Abdelaziz R, Elbahri M, Maser E, Adelung R, Röhl C. Toxicity of functional nano-micro zinc oxide tetrapods: impact of cell culture conditions, cellular age and material properties. PLoS One 2014; 9:e84983. [PMID: 24454775 PMCID: PMC3890288 DOI: 10.1371/journal.pone.0084983] [Citation(s) in RCA: 86] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2013] [Accepted: 11/27/2013] [Indexed: 12/30/2022] Open
Abstract
With increasing production and applications of nanostructured zinc oxide, e.g., for biomedical and consumer products, the question of safety is getting more and more important. Different morphologies of zinc oxide structures have been synthesized and accordingly investigated. In this study, we have particularly focused on nano-micro ZnO tetrapods (ZnO-T), because their large scale fabrication has been made possible by a newly introduced flame transport synthesis approach which will probably lead to several new applications. Moreover, ZnO-T provide a completely different morphology then classical spherical ZnO nanoparticles. To get a better understanding of parameters that affect the interactions between ZnO-T and mammalian cells, and thus their biocompatibility, we have examined the impact of cell culture conditions as well as of material properties on cytotoxicity. Our results demonstrate that the cell density of fibroblasts in culture along with their age, i.e., the number of preceding cell divisions, strongly affect the cytotoxic potency of ZnO-T. Concerning the material properties, the toxic potency of ZnO-T is found to be significantly lower than that of spherical ZnO nanoparticles. Furthermore, the morphology of the ZnO-T influenced cellular toxicity in contrast to surface charges modified by UV illumination or O2 treatment and to the material age. Finally, we have observed that direct contact between tetrapods and cells increases their toxicity compared to transwell culture models which allow only an indirect effect via released zinc ions. The results reveal several parameters that can be of importance for the assessment of ZnO-T toxicity in cell cultures and for particle development.
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Affiliation(s)
- Heike Papavlassopoulos
- Institute of Toxicology and Pharmacology for Natural Scientists, Christiana Albertina University Kiel, Kiel, Germany
| | - Yogendra K. Mishra
- Functional Nanomaterials, Institute for Materials Science, Christiana Albertina University Kiel, Kiel, Germany
- * E-mail: (YKM); (CR)
| | - Sören Kaps
- Functional Nanomaterials, Institute for Materials Science, Christiana Albertina University Kiel, Kiel, Germany
| | - Ingo Paulowicz
- Functional Nanomaterials, Institute for Materials Science, Christiana Albertina University Kiel, Kiel, Germany
| | - Ramzy Abdelaziz
- Nanochemistry and Nanoengineering, Institute for Materials Science, Christiana Albertina University Kiel, Kiel, Germany
| | - Mady Elbahri
- Nanochemistry and Nanoengineering, Institute for Materials Science, Christiana Albertina University Kiel, Kiel, Germany
- Nanochemistry and Nanoengineering, Institute of Polymer Research, Helmholtz-Zentrum Geesthacht, Geesthacht, Germany
| | - Edmund Maser
- Institute of Toxicology and Pharmacology for Natural Scientists, Christiana Albertina University Kiel, Kiel, Germany
| | - Rainer Adelung
- Functional Nanomaterials, Institute for Materials Science, Christiana Albertina University Kiel, Kiel, Germany
| | - Claudia Röhl
- Institute of Toxicology and Pharmacology for Natural Scientists, Christiana Albertina University Kiel, Kiel, Germany
- ZEBET - Alternative Methods to Animal Experiments, Federal Institute for Risk Assessment, Berlin, Germany
- * E-mail: (YKM); (CR)
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Jin X, Strueben J, Heepe L, Kovalev A, Mishra YK, Adelung R, Gorb SN, Staubitz A. Joining the un-joinable: adhesion between low surface energy polymers using tetrapodal ZnO linkers. Adv Mater 2012; 24:5676-5680. [PMID: 22927220 DOI: 10.1002/adma.201201780] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2012] [Revised: 07/12/2012] [Indexed: 06/01/2023]
Abstract
Tetrapodal ZnO crystals are used for mechanical interlocking of PTFE and cross-linked PDMS, classically non-adhesive polymers. This novel approach is straightforward and easily applicable and leads to a peel strength that is higher than 200 N m(-1) without chemical modification of the surfaces. The shape of these fillers emerged as a crucial aspect of the interlocking mechanism.
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Affiliation(s)
- Xin Jin
- Institute for Materials Science, Functional Nanomaterials, University of Kiel, Germany
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Trigilio J, Antoine TE, Paulowicz I, Mishra YK, Adelung R, Shukla D. Tin oxide nanowires suppress herpes simplex virus-1 entry and cell-to-cell membrane fusion. PLoS One 2012; 7:e48147. [PMID: 23110193 PMCID: PMC3480479 DOI: 10.1371/journal.pone.0048147] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2012] [Accepted: 09/20/2012] [Indexed: 01/15/2023] Open
Abstract
The advent of nanotechnology has ushered in the use of modified nanoparticles as potential antiviral agents against diseases such as herpes simplex virus 1 and 2 (HSV-1) (HSV-2), human immunodeficiency virus (HIV), monkeypox virus, and hepatitis B virus. Here we describe the application of tin oxide (SnO2) nanowires as an effective treatment against HSV-1 infection. SnO2 nanowires work as a carrier of negatively charged structures that compete with HSV-1 attachment to cell bound heparan sulfate (HS), therefore inhibiting entry and subsequent cell-to-cell spread. This promising new approach can be developed into a novel form of broad-spectrum antiviral therapy especially since HS has been shown to serve as a cellular co-receptor for a number of other viruses as well, including the respiratory syncytial virus, adeno-associated virus type 2, and human papilloma virus.
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Affiliation(s)
- James Trigilio
- Department of Ophthalmology & Visual Sciences, University of Illinois at Chicago, Chicago, Illinois, United States of America
| | - Thessicar E. Antoine
- Department of Ophthalmology & Visual Sciences, University of Illinois at Chicago, Chicago, Illinois, United States of America
- Department of Microbiology & Immunology, University of Illinois at Chicago, Chicago, Illinois, United States of America
| | - Ingo Paulowicz
- Department of Engineering, Institute for Materials Science, University of Kiel, Kiel, Germany
| | - Yogendra K. Mishra
- Department of Engineering, Institute for Materials Science, University of Kiel, Kiel, Germany
| | - Rainer Adelung
- Department of Engineering, Institute for Materials Science, University of Kiel, Kiel, Germany
| | - Deepak Shukla
- Department of Ophthalmology & Visual Sciences, University of Illinois at Chicago, Chicago, Illinois, United States of America
- Department of Microbiology & Immunology, University of Illinois at Chicago, Chicago, Illinois, United States of America
- * E-mail:
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Avasthi DK, Mishra YK, Singhal R, Kabiraj D, Mohapatra S, Mohanta B, Gohil NK, Singh N. Synthesis of plasmonic nanocomposites for diverse applications. J Nanosci Nanotechnol 2010; 10:2705-12. [PMID: 20355488 DOI: 10.1166/jnn.2010.1433] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
We report the synthesis of gold and silver nanostructures embedded in different dielectric matrices by atom beam co-sputtering, a novel technique. We have synthesized gold-silicon core shell nanostructures and Au-ZnO nanocomposite with tunable surface plasmon resonance (SPR) by atom beam co-sputtering and subsequent annealing. The Au-ZnO nanocomposite shows significant enhancement in intensity of Raman modes of fullerene molecules and therefore can help in surface enhanced Raman spectroscopy investigation of organic molecules. The synthesized Ag-polymer nanocomposite thin films show excellent features of broad SPR absorption extending upto IR region and a narrow transmission of light in UV region approximately 320 nm which could be of technological interest in solar absorbers and UV light filters respectively. The Ag-silica nanocomposite thin films show their utility in glucose sensing. The gold-silica nanocomposite thin films exhibit their possible use in detection of human ovarian cancer cells in a preliminary study. The shift in SPR peak of Au nanoparticles (NPs) present at the surface of silica synthesized by thermal evaporation and annealing, after attachment of biological molecules like proteins has been studied.
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Affiliation(s)
- D K Avasthi
- Inter University Accelerator Centre, P.O. Box 10502, New Delhi 110067, India
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27
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Mishra YK, Mohapatra S, Chakravadhanula VSK, Lalla NP, Zaporojtchenko V, Avasthi DK, Faupel F. Synthesis and characterization of Ag-polymer nanocomposites. J Nanosci Nanotechnol 2010; 10:2833-2837. [PMID: 20355509 DOI: 10.1166/jnn.2010.1449] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
We report the synthesis of Ag nanoparticles in polyethylene terephthalate (PET) matrix using atom beam co-sputtering. Metal filling factor was evaluated by Rutherford backscattering spectrometry. Microstructural evolutions of the nanocomposites films were investigated by transmission electron microscopy, which confirmed the formation of irregular shaped Ag nanoparticles. The X-ray photoelectron spectroscopy measurements of the sputter deposited PET film and co-sputtered deposited Ag-PET as well as PET bulk foil (from Goodfellows) were performed to study chemical composition of the nanocomposite films. The optical properties of these nanocomposites were studied by light absorption/transmission, which revealed a narrow transmission of UV light approximately 320 nm and a broad surface plasmon resonance absorption extending up to infrared region (approximately 2400 nm). Swift heavy ion irradiation of Ag-PET nanocomposite resulted in narrowing the full width at half maximum of transmission band.
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Affiliation(s)
- Y K Mishra
- Functional Nanomaterials, Institute for Materials Science, Christian-Albrechts-University, KaiserstraBe 2, 24143 Kiel, Germany
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Brickwedel J, Vaid AK, Juneja S, Biswal S, Meharwal ZS, Saraf N, Reichenspurner H, Mishra YK. Coronary endarterectomy in off-pump coronary bypass grafting: angiographic midterm results. Thorac Cardiovasc Surg 2010. [DOI: 10.1055/s-0029-1246636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Vaid AK, Brickwedel J, Juneja S, Biswal S, Reichenspurner H, Mishra YK. Late spontaneous leaflet embolisation of a St. Jude aortic prosthetic heart valve. Thorac Cardiovasc Surg 2010. [DOI: 10.1055/s-0029-1246743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Mohapatra S, Mishra YK, Ghatak J, Kabiraj D, Avasthi DK. Surface plasmon resonance of Ag nanoparticles embedded in partially oxidized amorphous Si matrix. J Nanosci Nanotechnol 2008; 8:4285-4289. [PMID: 19049219 DOI: 10.1166/jnn.2008.an30] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Nanocomposite films containing Ag nanoparticles embedded in partially oxidized amorphous Si matrix were deposited on silica glass substrates by co-sputtering of Ag and Si with 1.5 keV neutral Ar atoms. The Ag content and thickness of the nanocomposite films was determined by Rutherford backscattering spectrometry. Optical absorption studies revealed the presence of surface plasmon resonance (SPR) indicating the formation of Ag nanoparticles in the as-deposited films. The position, width and strength of SPR have been found to be strongly dependent on the Ag content of the films. For annealing in oxidizing atmosphere, a significant red shift in the SPR along with a drastic reduction in the resonant absorption has been observed. The amount of red shift has been found to be dependent on the Ag content of the films. Transmission electron microscopy was used to study the size distribution, shape and crystal structure of Ag nanoparticles in the nanocomposite films. TEM analysis of annealed sample revealed the formation of silver oxide nanoshells surrounding Ag nanoparticles.
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Affiliation(s)
- S Mohapatra
- Inter University Accelerator Centre, Post Box No. 10502, New Delhi 110067, India
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Kulriya PK, Singh F, Tripathi A, Ahuja R, Kothari A, Dutt RN, Mishra YK, Kumar A, Avasthi DK. Setup for in situ x-ray diffraction study of swift heavy ion irradiated materials. Rev Sci Instrum 2007; 78:113901. [PMID: 18052482 DOI: 10.1063/1.2804171] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
An in situ x-ray diffraction (XRD) setup is designed and installed in the materials science beam line of the Pelletron accelerator at the Inter-University Accelerator Centre for in situ studies of phase change in swift heavy ion irradiated materials. A high vacuum chamber with suitable windows for incident and diffracted X-rays is integrated with the goniometer and the beamline. Indigenously made liquid nitrogen (LN2) temperature sample cooling unit is installed. The snapshots of growth of particles with fluence of 90 MeV Ni ions were recorded using in situ XRD experiment, illustrating the potential of this in situ facility. A thin film of C60 was used to test the sample cooling unit. It shows that the phase of the C60 film transforms from a cubic lattice (at room temperature) to a fcc lattice at around T=255 K.
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Affiliation(s)
- P K Kulriya
- Inter-University Accelerator Centre, PO Box 10502, New Delhi 110067, India.
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Mishra YK, Mohapatra S, Kabiraj D, Tripathi A, Pivin JC, Avasthi DK. Growth of Au nanostructures by annealing electron beam evaporated thin films. ACTA ACUST UNITED AC 2007. [DOI: 10.1088/1464-4258/9/9/s21] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Abstract
In the present work, we report the formation of Au nanorings on quartz substrate by thermal evaporation of Au on quartz and subsequent annealing in certain conditions as a function of metal volume fraction and annealing temperature. Optical extinction cross-sections measurements and atomic force microscopy (AFM) studies have been performed on the as-deposited and annealed samples. No signature of nanoparticles formation is found in case of as-deposited samples, while spectra of annealed samples show a clear signature of surface plasmon resonance absorption (SPR) peaks around 580 nm, which reveals the formation of Au nanostructure. AFM images clearly show the formation of Au nanorings under certain conditions. The observed SPR frequency of the Au nanorings in our case is in agreement with the estimated frequency obtained from the formulation of Aizpurua et al. Optical extinction measurements at different incidence angles were performed, which showed splitting of SPR at angles beyond 20 degrees.
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Affiliation(s)
- Y K Mishra
- Inter University Accelerator Centre, P 0. Box 10502, New Delhi 110067, India
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Mishra YK, Wasir H, Sharma M, Sharma KK, Mehta Y, Trehan N. Robotically enhanced coronary artery bypass surgery. Indian Heart J 2004; 56:622-7. [PMID: 15751517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2023] Open
Abstract
BACKGROUND Robotically enhanced telemanipulation surgery is a fast developing technique which allows totally endoscopic cardiac surgery with utmost precision and perfection on both beating heart as well as arrested heart. METHODS AND RESULTS Between December 2002 and February 2004, 125 patients underwent robotically enhanced coronary artery bypass surgery using the da Vinci telemanipulation system (Intuitive Surgical Inc., California). Eleven patients underwent totally endoscopic coronary artery bypass surgery. Of them 9 were done on beating heart while 2 were done on arrested heart. One hundred and fourteen patients had endoscopic takedown of internal mammary artery followed by minimally invasive direct coronary artery bypass in 63 patients and left anterolateral thoracotomy in 51 patients. The internal mammary artery mobilization time was 42 min (35-74 min) while the left internal mammary artery to left anterior descending artery anastomosis time ranged from 20 to 36 min for the totally endoscopic coronary artery bypass patients. In 1 patient, the right internal mammary artery was anastomosed to diagonal artery totally endoscopically. The mean internal mammary artery flow by Doppler measurement done in patients undergoing minimally invasive direct coronary artery bypass was 64 ml/min. Seven patients required conversion to median sternotomy and coronary bypass surgery on beating heart. The mean intensive care unit stay was 1.2 days and the mean hospital stay 4.5 days. There was 1 in-hospital mortality. All 11 patients who underwent totally endoscopic bypass surgery had coronary angiography done at 3 months interval which showed 100% patency in 10 patients while one patient had 50% anastomotic narrowing for which coronary angioplasty was done in the same sitting. CONCLUSIONS Using telematic technology, a complete endoscopic anastomosis is possible in both single vessel and suitable double vessel disease patients. The use of robotics is now extended to achieve complete myocardial revascularization by harvesting both the internal mammary arteries and making a small thoracotomy for direct anastomosis as well.
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Affiliation(s)
- Y K Mishra
- Department of Cardiovascular Surgery, Escorts Heart Institute and Research Centre, New Delhi.
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Abstract
BACKGROUND Conventional redo coronary artery bypass grafting is associated with significant morbidity. The danger of reoperation is mainly in reopening the sternum and in the manipulation of the heart and the old grafts. Therefore, off-pump redo coronary artery bypass grafting with a patient-specific approach in selected cases seems an ideal technique. METHODS Between October 1995 to September 1999, 50 patients with mean age of 61.8+/-8 years underwent reoperative coronary artery bypass grafting without cardiopulmonary bypass. Isolated left internal mammary artery (LIMA) to left anterior descending artery (LAD) anastomosis was carried out in 25 cases through left anterior minithoracotomy. In 1 patient LIMA was grafted on a previous vein graft to LAD, which was critically stenosed proximally but distal anastomosis was patent. In another case LIMA was grafted to Ramus intermedius branch. Midsternotomy approach was used to carry out LAD and right coronary artery grafting in 21 cases. In 2 patients a posterolateral thoracotomy approach was used to bypass obtuse marginal branches without cardiopulmonary bypass; in these cases proximal anastomosis was performed on the descending aorta. RESULTS Mortality rate was 4% (2 deaths). Two patients sustained perioperative myocardial infarction. No patient was reexplored for hemorrhage and 38 patients did not require homologous blood transfusion. Sixteen patients underwent check angiogram and all of them were found to have patent redo grafts. Cardiac recovery room stay was 22+/-7 hours and hospital stay 5+/-2 days. CONCLUSIONS In selected patients, reoperative coronary artery bypass grafting can be performed without cardiopulmonary bypass with a low perioperative morbidity and mortality and satisfactory graft patency.
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Affiliation(s)
- N Trehan
- Escorts Heart Institute and Research Centre, New Delhi, India
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Abstract
BACKGROUND This study evaluates the feasibility of minimally invasive mitral valve surgery. The aim of the study was to minimize surgical access to achieve better cosmetic results, less postoperative discomfort, and faster recovery. METHODS From September 1997 to October 1998, 76 patients underwent mitral valve surgery through a right anterolateral minithoracotomy at the fourth intercostal space. The mitral valve was either repaired (n = 21) or replaced (n = 55). In all cases, open femoral artery-femoral vein cannulation was used for cardiopulmonary bypass. In 27 cases, an endoluminal aortic clamp was used, but in 49 cases, the aorta was cross-clamped with a transthoracic, sliding-rod-design clamp. RESULTS There were no approach-related limitations to surgical intervention. Intraoperative transesophageal echocardiography revealed excellent results after valve repair and no paravalvular leak in any patient after mitral valve replacement. Mean duration of intensive care and postoperative hospital stay was 32+/-5.2 hours and 7+/-1.1 days, respectively. There were no major complications related to femoral vessel cannulation. In 1 patient, transient neurological problems developed, with subsequent complete recovery. There was one hospital mortality (85-year-old male patient died of upper GI bleeding). CONCLUSIONS Minimally invasive port access mitral valve surgery can accelerate recovery and decrease pain, while maintaining overall surgical efficacy. It also provides better cosmetic results to our patients, and now it has become our standard approach for isolated mitral valve surgery.
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Affiliation(s)
- Y K Mishra
- Escorts Heart Institute and Research Centre, New Delhi, India.
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Abstract
BACKGROUND Coronary artery bypass grafting has been based on cardiopulmonary bypass, myocardial protection, and the median sternotomy. The recent concept of minimally invasive coronary artery bypass grafting in selected patients has dramatically affected surgical management of coronary artery disease. Coronary artery bypass grafting of anterior coronary arteries with in situ internal mammary artery through a limited anterior thoracotomy is a procedure that is gaining acceptance. METHODS Fifty-one patients were operated on by minithoracotomy and direct coronary artery bypass grafting without cardiopulmonary bypass. Left internal mammary artery-to-left anterior descending coronary artery anastomosis was done in 50 patients, and in 1 patient, left internal mammary artery-to-left anterior descending artery and right internal mammary artery-to-right coronary artery anastomoses were constructed through bilateral minithoracotomies. Left anterior minithoracotomy through the fourth intercostal space and right anterior minithoracotomy through the fifth intercostal space were used for left internal mammary artery and right internal mammary artery dissection, respectively. With this approach, a 4- to 6-cm length of mammary artery was easily dissected. Mammary-to-coronary anastomosis was performed on a beating heart without cardiopulmonary bypass through window pericardiotomy. RESULTS Twenty-five patients were extubated in the operating room and 26 in the intensive care unit 4 to 6 hours after operation. None of these patients required blood transfusion or inotropic support. Postoperative predischarge angiography in 42 patients revealed adequate mammary-to-coronary flow in 40 patients. Doppler flow studies were also in accordance with angiographic findings. Forty-five patients are in our regular follow-up (mean follow-up, 6.23 +/- 1.34 months); 44 of them are in functional class I. CONCLUSION In our experience minithoracotomy is a safe, simple, and minimally invasive procedure. Favorable cost/benefit ratio has been achieved owing to no early or late mortality and minimal early morbidity. Postoperative angiography and Doppler flow study revealed excellent predictive long-term results.
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Affiliation(s)
- Y K Mishra
- Escorts Heart Institute and Research Centre, New Delhi, India.
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Kertsman VP, Kambarov SU, Mishra YK, Mota ER, Garsevanov GD, Soboleva ER, Bogonatov BN. Antegrade and retrograde cardioplegia with different reperfusion techniques in patients with multiple coronary artery lesions. Indian Heart J 1992; 44:103-7. [PMID: 1427925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
To evaluate the effectiveness of retrograde cardioplegia and reperfusion, a total of 266 patients undergoing coronary bypass surgery between Nov 1987 to Dec 1989 were divided into three groups depending on the method of cardioplegic fluid delivery and reperfusion. In group I (80 patients) antegrade cardioplegia and reperfusion was used. In group II (98 patients) antegrade and retrograde cardioplegia and antegrade reperfusion was used while in group III antegrade and retrograde cardioplegia and retrograde reperfusion was used. Myocardial functions were studied with the help of an on-line computer on the basis of mathematical model of heart before and after cardiopulmonary bypass. Biopsy specimens were collected before, during and after cardiopulmonary bypass in order to study myocardial structural changes. In group I patients there was decrease in myocardial function in the immediate post perfusion period while group II patients had considerable improvement in their myocardial function and groups III patients showed further improvement in it. Ultrastructural myocardial study revealed considerable detrimental changes in group I, minimal changes in group II and no change in group III patients. Thus in our experience retrograde cardioplegia and retrograde reperfusion with warm oxygenated blood provide maximum myocardial protection in patients with multiple coronary artery lesions.
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Affiliation(s)
- V P Kertsman
- Bakulev Institute of Cardiovascular Surgery, Moscow, USSR
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