1
|
Tiwari DK, Coria-Tellez AV. Rapid Analysis of Chemical Compounds in Curcuma Longa using AccuTOF™ DART® Direct Analysis in Real Time, Time-of-Flight Mass Spectrometer. Microsc Microanal 2023; 29:66-68. [PMID: 37613171 DOI: 10.1093/micmic/ozad067.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/25/2023]
Affiliation(s)
- D K Tiwari
- Consejo Nacional de Ciencia y Tecnología- El Colegio de Michoacán, Michoacán, México
- Laboratorio de Análisis y Diagnóstico del Patrimonio, El Colegio de Michoacán, Michoacán, México
| | - A V Coria-Tellez
- Laboratorio de Análisis y Diagnóstico del Patrimonio, El Colegio de Michoacán, Michoacán, México
| |
Collapse
|
2
|
Barajas-Plancarte MG, Tiwari DK. Characterization of Ricinus communis and Aloe vera extracts using AccuTOF™ DART® Direct Analysis in Real Time Time-of-Flight Mass Spectrometer. Microsc Microanal 2023; 29:30-32. [PMID: 37613064 DOI: 10.1093/micmic/ozad067.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/25/2023]
Affiliation(s)
| | - D K Tiwari
- CONACYT-El Colegio de Michoacán/LADIPA, La Piedad, Michoacán, México
| |
Collapse
|
3
|
Cid LEM, Tiwari DK. Nanomaterials an Overview & Green Synthesis of Zn and Mg Oxide Nanomaterials for Agri-food Production. Microsc Microanal 2023; 29:59-60. [PMID: 37613104 DOI: 10.1093/micmic/ozad067.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/25/2023]
Affiliation(s)
| | - D K Tiwari
- Consejo Nacional de Ciencia y Tecnología- El Colegio de Michoacán, Michoacán, México
| |
Collapse
|
4
|
Tiwari DK, Dasgupta-Schubert N, Villaseñor LM. Water Absorption Kinetics of Zea mays Seedling using MWCNT as a Growth Promotor. Microsc Microanal 2023; 29:21-23. [PMID: 37613451 DOI: 10.1093/micmic/ozad067.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/25/2023]
Affiliation(s)
- D K Tiwari
- Consejo Nacional de Ciencia y Tecnología- El Colegio de Michoacán, Michoacán, México
| | - N Dasgupta-Schubert
- Facultad de Fisica, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, México
| | - L M Villaseñor
- Instituto de Física y Matemáticas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, México
| |
Collapse
|
5
|
Tiwari DK. Nanomaterials as a Replacement for Traditional Agrochemicals: Strategies Towards Sustainable Agriculture. Microsc Microanal 2023; 29:13-14. [PMID: 37613117 DOI: 10.1093/micmic/ozad067.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/25/2023]
Affiliation(s)
- D K Tiwari
- Consejo Nacional de Ciencia y Tecnología- El Colegio de Michoacán, Michoacán, México
- Laboratorio de Análisis y Diagnóstico del Patrimonio, El Colegio de Michoacán, Michoacán, México
| |
Collapse
|
6
|
Jacquez JAM, Tiwari DK, González RP. Lettuce Production Using Nano Nutrient-Based Hydroponic System: Vertical Plant Factory Production. Microsc Microanal 2023; 29:72-73. [PMID: 37613112 DOI: 10.1093/micmic/ozad067.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/25/2023]
|
7
|
Joby JP, Das S, Pinapati P, Rogez B, Baffou G, Tiwari DK, Cherukulappurath S. Optically-assisted thermophoretic reversible assembly of colloidal particles and E. coli using graphene oxide microstructures. Sci Rep 2022; 12:3657. [PMID: 35256647 PMCID: PMC8901786 DOI: 10.1038/s41598-022-07588-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Accepted: 02/15/2022] [Indexed: 02/02/2023] Open
Abstract
Optically-assisted large-scale assembly of nanoparticles have been of recent interest owing to their potential in applications to assemble and manipulate colloidal particles and biological entities. In the recent years, plasmonic heating has been the most popular mechanism to achieve temperature hotspots needed for extended assembly and aggregation. In this work, we present an alternative route to achieving strong thermal gradients that can lead to non-equilibrium transport and assembly of matter. We utilize the excellent photothermal properties of graphene oxide to form a large-scale assembly of silica beads. The formation of the assembly using this scheme is rapid and reversible. Our experiments show that it is possible to aggregate silica beads (average size 385 nm) by illuminating thin graphene oxide microplatelet by a 785 nm laser at low intensities of the order of 50-100 µW/µm2. We further extend the study to trapping and photoablation of E. coli bacteria using graphene oxide. We attribute this aggregation process to optically driven thermophoretic forces. This scheme of large-scale assembly is promising for the study of assembly of matter under non-equilibrium processes, rapid concentration tool for spectroscopic studies such as surface-enhanced Raman scattering and for biological applications.
Collapse
Affiliation(s)
| | - Suman Das
- Department of Biotechnology, Goa University, Taleigao Plateau, Goa, 403206, India
| | - Praveenkumar Pinapati
- School of Physical and Applied Sciences, Goa University, Taleigao Plateau, Goa, 403206, India
| | - Benoît Rogez
- Institut Fresnel, CNRS, Aix Marseille University, Centrale Marseille, Marseille, France
| | - Guillaume Baffou
- Institut Fresnel, CNRS, Aix Marseille University, Centrale Marseille, Marseille, France
| | - Dhermendra K Tiwari
- Department of Biotechnology, Goa University, Taleigao Plateau, Goa, 403206, India.
| | - Sudhir Cherukulappurath
- School of Physical and Applied Sciences, Goa University, Taleigao Plateau, Goa, 403206, India.
| |
Collapse
|
8
|
Mukund B, Kumar A, Bhat V, Tiwari DK, Thergaonkar RW. COVID-19-Induced acute pancreatitis – A case series. J Mar Med Soc 2022. [DOI: 10.4103/jmms.jmms_35_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
|
9
|
Tiwari DK, Jha G, Tiwari M, Kerkar S, Das S, Gobre VV. Synergistic Antibacterial Potential and Cell Surface Topology Study of Carbon Nanodots and Tetracycline Against E. coli. Front Bioeng Biotechnol 2021; 9:626276. [PMID: 34676200 PMCID: PMC8524088 DOI: 10.3389/fbioe.2021.626276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Accepted: 08/05/2021] [Indexed: 11/24/2022] Open
Abstract
Increasing drugs and antibiotic resistance against pathogenic bacteria create the necessity to explore novel biocompatible antibacterial materials. This study investigated the antibacterial effect of carbon dot (C-dot) against E. coli and suggested an effective synergistic dose of tetracycline with C-dot, using mathematical modeling of antibacterial data. Colony count and growth curve studies clearly show an enhanced antibacterial activity against E. coli synergistically treated with C-dot and tetracycline, even at a concentration ten times lower than the minimum inhibitory concentration (MIC). The Richards model-fit of growth curve clearly showed an increase in doubling time, reduction in growth rate, and early stationary phase in the synergistic treatment with 42% reduction in the growth rate (μm) compared to the control. Morphological studies of E. coli synergistically treated with C-dot + tetracycline showed cell damage and deposition of C-dots on the bacterial cell membrane in scanning electron microscopy imaging. We further validated the topological changes, cell surface roughness, and significant changes in the height profile (ΔZ) with the control and treated E. coli cells viewed under an atomic force microscope. We confirmed that the effective antibacterial doses of C-dot and tetracycline were much lower than the MIC in a synergistic treatment.
Collapse
Affiliation(s)
- Dhermendra K Tiwari
- Department of Biotechnology, Faculty of Life Sciences and Environment, Goa University, Taleigao plateau, Goa, India
| | - Gargi Jha
- Department of Biotechnology, Faculty of Life Sciences and Environment, Goa University, Taleigao plateau, Goa, India
| | - Manisha Tiwari
- Department of Biotechnology, Faculty of Life Sciences and Environment, Goa University, Taleigao plateau, Goa, India
| | - Savita Kerkar
- Department of Biotechnology, Faculty of Life Sciences and Environment, Goa University, Taleigao plateau, Goa, India
| | - Suman Das
- Department of Biotechnology, Faculty of Life Sciences and Environment, Goa University, Taleigao plateau, Goa, India
| | - Vivekanand V Gobre
- School of Chemical Sciences, Goa University, Taleigao plateau, Goa, India
| |
Collapse
|
10
|
Das S, Tiwari M, Mondal D, Sahoo BR, Tiwari DK. Growing tool-kit of photosensitizers for clinical and non-clinical applications. J Mater Chem B 2020; 8:10897-10940. [PMID: 33165483 DOI: 10.1039/d0tb02085k] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Photosensitizers are photosensitive molecules utilized in clinical and non-clinical applications by taking advantage of light-mediated reactive oxygen generation, which triggers local and systemic cellular toxicity. Photosensitizers are used for diverse biological applications such as spatio-temporal inactivation of a protein in a living system by chromophore-assisted light inactivation, localized cell photoablation, photodynamic and immuno-photodynamic therapy, and correlative light-electron microscopy imaging. Substantial efforts have been made to develop several genetically encoded, chemically synthesized, and nanotechnologically driven photosensitizers for successful implementation in redox biology applications. Genetically encoded photosensitizers (GEPS) or reactive oxygen species (ROS) generating proteins have the advantage of using them in the living system since they can be manipulated by genetic engineering with a variety of target-specific genes for the precise spatio-temporal control of ROS generation. The GEPS variety is limited but is expanding with a variety of newly emerging GEPS proteins. Apart from GEPS, a large variety of chemically- and nanotechnologically-empowered photosensitizers have been developed with a major focus on photodynamic therapy-based cancer treatment alone or in combination with pre-existing treatment methods. Recently, immuno-photodynamic therapy has emerged as an effective cancer treatment method using smartly designed photosensitizers to initiate and engage the patient's immune system so as to empower the photosensitizing effect. In this review, we have discussed various types of photosensitizers, their clinical and non-clinical applications, and implementation toward intelligent efficacy, ROS efficiency, and target specificity in biological systems.
Collapse
Affiliation(s)
- Suman Das
- Department of Biotechnology, Faculty of Life Sciences and Environment, Goa University, Taleigao Plateau, Goa 403206, India.
| | | | | | | | | |
Collapse
|
11
|
Lara-Romero J, Campos-García J, Dasgupta-Schubert N, Borjas-García S, Tiwari DK, Paraguay-Delgado F, Jiménez-Sandoval S, Alonso-Nuñez G, Gómez-Romero M, Lindig-Cisneros R, Reyes De la Cruz H, Villegas JA. Biological effects of carbon nanotubes generated in forest wildfire ecosystems rich in resinous trees on native plants. PeerJ 2017; 5:e3658. [PMID: 28828256 PMCID: PMC5562139 DOI: 10.7717/peerj.3658] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [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: 05/19/2017] [Accepted: 07/15/2017] [Indexed: 12/12/2022] Open
Abstract
Carbon nanotubes (CNTs) have a broad range of applications and are generally considered human-engineered nanomaterials. However, carbon nanostructures have been found in ice cores and oil wells, suggesting that nature may provide appropriate conditions for CNT synthesis. During forest wildfires, materials such as turpentine and conifer tissues containing iron under high temperatures may create chemical conditions favorable for CNT generation, similar to those in synthetic methods. Here, we show evidence of naturally occurring multiwalled carbon nanotubes (MWCNTs) produced from Pinus oocarpa and Pinus pseudostrobus, following a forest wildfire. The MWCNTs showed an average of 10 walls, with internal diameters of ∼2.5 nm and outer diameters of ∼14.5 nm. To verify whether MWCNT generation during forest wildfires has a biological effect on some characteristic plant species of these ecosystems, germination and development of seedlings were conducted. Results show that the utilization of comparable synthetic MWCNTs increased seed germination rates and the development of Lupinus elegans and Eysenhardtia polystachya, two plants species found in the burned forest ecosystem. The finding provides evidence that supports the generation and possible ecological functions of MWCNTs in nature.
Collapse
Affiliation(s)
- Javier Lara-Romero
- Facultad de Ingeniería Química, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, México
| | - Jesús Campos-García
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, México
| | | | | | - D K Tiwari
- CONACYT-El Colegio de Michoacán/Ladipa, La Piedad, México
| | | | - Sergio Jiménez-Sandoval
- Centro de Investigación y de Estudios Avanzados del IPN, Unidad Querétaro, Querétaro, México
| | - Gabriel Alonso-Nuñez
- Centro de Nanociencias y Nanotecnología, Universidad Nacional Autónoma de México, Ensenada, Baja California, Mexico
| | - Mariela Gómez-Romero
- Instituto de Investigaciones en Ecosistemas y Sustentabilidad, Universidad Nacional Autónoma de México, Morelia, Michoacán, Mexico
| | - Roberto Lindig-Cisneros
- Instituto de Investigaciones en Ecosistemas y Sustentabilidad, Universidad Nacional Autónoma de México, Morelia, Michoacán, Mexico
| | - Homero Reyes De la Cruz
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, México
| | - Javier A Villegas
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, México
| |
Collapse
|
12
|
Tiwari DK, Tiwari M, Sahoo BR. Optical Nanoscopy Tools for Biologists:Advancements of Fluorophores and Optics for High Resolution and Live Imaging. CURR SCI INDIA 2017. [DOI: 10.18520/cs/v112/i04/714-724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
13
|
Dasgupta-Schubert N, Tiwari DK, Villaseñor Cendejas LM. Comment on 'Carbon and fullerene nanomaterials in plant system'. J Nanobiotechnology 2016; 14:28. [PMID: 27066901 PMCID: PMC4828792 DOI: 10.1186/s12951-016-0180-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Accepted: 03/30/2016] [Indexed: 11/26/2022] Open
Abstract
A recent review article entitled “Carbon and fullerene nanomaterials in plant system” published in this journal, misinterprets a component of our (published) work on the interactions of carbon nanotubes with plants. In this comment, we provide the rationale to counter this misconstruction.
Collapse
Affiliation(s)
- N Dasgupta-Schubert
- Instituto de Investigaciones Químico Biológicas (IIQB), University of Michoacan (UMSNH), Cd. Universitaria, 58060, Morelia, Michoacán, Mexico.
| | - D K Tiwari
- Colegio de Michoacán, Jardines del Cerro Grande, La Piedad, 59370, Zamora, Michoacán, Mexico
| | - L M Villaseñor Cendejas
- Instituto de Física y Matemáticas (IFM), University of Michoacan (UMSNH), Cd. Universitaria, 58060, Morelia, Michoacán, Mexico
| |
Collapse
|
14
|
Uno SN, Tiwari DK, Kamiya M, Arai Y, Nagai T, Urano Y. A guide to use photocontrollable fluorescent proteins and synthetic smart fluorophores for nanoscopy. Microscopy (Oxf) 2015; 64:263-77. [PMID: 26152215 DOI: 10.1093/jmicro/dfv037] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2015] [Accepted: 06/12/2015] [Indexed: 12/28/2022] Open
Abstract
Recent advances in nanoscopy, which breaks the diffraction barrier and can visualize structures smaller than the diffraction limit in cells, have encouraged biologists to investigate cellular processes at molecular resolution. Since nanoscopy depends not only on special optics but also on 'smart' photophysical properties of photocontrollable fluorescent probes, including photoactivatability, photoswitchability and repeated blinking, it is important for biologists to understand the advantages and disadvantages of fluorescent probes and to choose appropriate ones for their specific requirements. Here, we summarize the characteristics of currently available fluorescent probes based on both proteins and synthetic compounds applicable to nanoscopy and provide a guideline for selecting optimal probes for specific applications.
Collapse
Affiliation(s)
- Shin-Nosuke Uno
- Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Dhermendra K Tiwari
- The Institute of Scientific and Industrial Research, Osaka University, Mihogaoka 8-1, Ibaraki, Osaka 567-0047, Japan
| | - Mako Kamiya
- Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan PRESTO, Japan Science and Technology Agency, Saitama, Japan
| | - Yoshiyuki Arai
- The Institute of Scientific and Industrial Research, Osaka University, Mihogaoka 8-1, Ibaraki, Osaka 567-0047, Japan
| | - Takeharu Nagai
- The Institute of Scientific and Industrial Research, Osaka University, Mihogaoka 8-1, Ibaraki, Osaka 567-0047, Japan
| | - Yasuteru Urano
- Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo, Japan
| |
Collapse
|
15
|
Tiwari DK, Arai Y, Yamanaka M, Matsuda T, Agetsuma M, Nakano M, Fujita K, Nagai T. A fast- and positively photoswitchable fluorescent protein for ultralow-laser-power RESOLFT nanoscopy. Nat Methods 2015; 12:515-8. [DOI: 10.1038/nmeth.3362] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2014] [Accepted: 03/10/2015] [Indexed: 02/01/2023]
|
16
|
Tiwari DK, Nagai T. Smart fluorescent proteins: Innovation for barrier-free superresolution imaging in living cells. Dev Growth Differ 2013; 55:491-507. [DOI: 10.1111/dgd.12064] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2013] [Revised: 03/06/2013] [Accepted: 03/22/2013] [Indexed: 01/08/2023]
Affiliation(s)
- Dhermendra K. Tiwari
- The Institute of Scientific and Industrial Research; Osaka University; Mihogaoka 8-1; Ibaraki; Osaka; 567-0047; Japan
| | - Takeharu Nagai
- The Institute of Scientific and Industrial Research; Osaka University; Mihogaoka 8-1; Ibaraki; Osaka; 567-0047; Japan
| |
Collapse
|
17
|
Abreu P, Aglietta M, Ahn EJ, Albuquerque IFM, Allard D, Allekotte I, Allen J, Allison P, Almeda A, Alvarez Castillo J, Alvarez-Muñiz J, Ambrosio M, Aminaei A, Anchordoqui L, Andringa S, Antičić T, Aramo C, Arganda E, Arqueros F, Asorey H, Assis P, Aublin J, Ave M, Avenier M, Avila G, Bäcker T, Balzer M, Barber KB, Barbosa AF, Bardenet R, Barroso SLC, Baughman B, Bäuml J, Beatty JJ, Becker BR, Becker KH, Bellétoile A, Bellido JA, Benzvi S, Berat C, Bertou X, Biermann PL, Billoir P, Blanco F, Blanco M, Bleve C, Blümer H, Boháčová M, Boncioli D, Bonifazi C, Bonino R, Borodai N, Brack J, Brogueira P, Brown WC, Bruijn R, Buchholz P, Bueno A, Burton RE, Caballero-Mora KS, Caramete L, Caruso R, Castellina A, Catalano O, Cataldi G, Cazon L, Cester R, Chauvin J, Cheng SH, Chiavassa A, Chinellato JA, Chirinos Diaz J, Chudoba J, Clay RW, Coluccia MR, Conceição R, Contreras F, Cook H, Cooper MJ, Coppens J, Cordier A, Coutu S, Covault CE, Creusot A, Criss A, Cronin J, Curutiu A, Dagoret-Campagne S, Dallier R, Dasso S, Daumiller K, Dawson BR, de Almeida RM, De Domenico M, De Donato C, de Jong SJ, De La Vega G, de Mello Junior WJM, de Mello Neto JRT, De Mitri I, de Souza V, de Vries KD, Decerprit G, del Peral L, del Río M, Deligny O, Dembinski H, Dhital N, Di Giulio C, Díaz Castro ML, Diep PN, Dobrigkeit C, Docters W, D'Olivo JC, Dong PN, Dorofeev A, dos Anjos JC, Dova MT, D'Urso D, Dutan I, Ebr J, Engel R, Erdmann M, Escobar CO, Espadanal J, Etchegoyen A, Facal San Luis P, Fajardo Tapia I, Falcke H, Farrar G, Fauth AC, Fazzini N, Ferguson AP, Ferrero A, Fick B, Filevich A, Filipčič A, Fliescher S, Fracchiolla CE, Fraenkel ED, Fröhlich U, Fuchs B, Gaior R, Gamarra RF, Gambetta S, García B, Garcia-Gamez D, Garcia-Pinto D, Gascon A, Gemmeke H, Gesterling K, Ghia PL, Giaccari U, Giller M, Glass H, Gold MS, Golup G, Gomez Albarracin F, Gómez Berisso M, Gonçalves P, Gonzalez D, Gonzalez JG, Gookin B, Góra D, Gorgi A, Gouffon P, Gozzini SR, Grashorn E, Grebe S, Griffith N, Grigat M, Grillo AF, Guardincerri Y, Guarino F, Guedes GP, Guzman A, Hague JD, Hansen P, Harari D, Harmsma S, Harrison TA, Harton JL, Haungs A, Hebbeker T, Heck D, Herve AE, Hojvat C, Hollon N, Holmes VC, Homola P, Hörandel JR, Horneffer A, Horvath P, Hrabovský M, Huege T, Insolia A, Ionita F, Italiano A, Jarne C, Jiraskova S, Josebachuili M, Kadija K, Kampert KH, Karhan P, Kasper P, Kégl B, Keilhauer B, Keivani A, Kelley JL, Kemp E, Kieckhafer RM, Klages HO, Kleifges M, Kleinfeller J, Knapp J, Koang DH, Kotera K, Krohm N, Krömer O, Kruppke-Hansen D, Kuehn F, Kuempel D, Kulbartz JK, Kunka N, La Rosa G, Lachaud C, Lauer R, Lautridou P, Le Coz S, Leão MSAB, Lebrun D, Lebrun P, Leigui de Oliveira MA, Lemiere A, Letessier-Selvon A, Lhenry-Yvon I, Link K, López R, Lopez Agüera A, Louedec K, Lozano Bahilo J, Lu L, Lucero A, Ludwig M, Lyberis H, Macolino C, Maldera S, Mandat D, Mantsch P, Mariazzi AG, Marin J, Marin V, Maris IC, Marquez Falcon HR, Marsella G, Martello D, Martin L, Martinez H, Martínez Bravo O, Mathes HJ, Matthews J, Matthews JAJ, Matthiae G, Maurizio D, Mazur PO, Medina-Tanco G, Melissas M, Melo D, Menichetti E, Menshikov A, Mertsch P, Meurer C, Mićanović S, Micheletti MI, Miller W, Miramonti L, Molina-Bueno L, Mollerach S, Monasor M, Monnier Ragaigne D, Montanet F, Morales B, Morello C, Moreno E, Moreno JC, Morris C, Mostafá M, Moura CA, Mueller S, Muller MA, Müller G, Münchmeyer M, Mussa R, Navarra G, Navarro JL, Navas S, Necesal P, Nellen L, Nelles A, Neuser J, Nhung PT, Niemietz L, Nierstenhoefer N, Nitz D, Nosek D, Nožka L, Nyklicek M, Oehlschläger J, Olinto A, Olmos-Gilbaja VM, Ortiz M, Pacheco N, Pakk Selmi-Dei D, Palatka M, Pallotta J, Palmieri N, Parente G, Parizot E, Parra A, Parsons RD, Pastor S, Paul T, Pech M, Pekala J, Pelayo R, Pepe IM, Perrone L, Pesce R, Petermann E, Petrera S, Petrinca P, Petrolini A, Petrov Y, Petrovic J, Pfendner C, Phan N, Piegaia R, Pierog T, Pieroni P, Pimenta M, Pirronello V, Platino M, Ponce VH, Pontz M, Privitera P, Prouza M, Quel EJ, Querchfeld S, Rautenberg J, Ravel O, Ravignani D, Revenu B, Ridky J, Riggi S, Risse M, Ristori P, Rivera H, Rizi V, Roberts J, Robledo C, Rodrigues de Carvalho W, Rodriguez G, Rodriguez Martino J, Rodriguez Rojo J, Rodriguez-Cabo I, Rodríguez-Frías MD, Ros G, Rosado J, Rossler T, Roth M, Rouillé-d'Orfeuil B, Roulet E, Rovero AC, Rühle C, Salamida F, Salazar H, Salesa Greus F, Salina G, Sánchez F, Santo CE, Santos E, Santos EM, Sarazin F, Sarkar B, Sarkar S, Sato R, Scharf N, Scherini V, Schieler H, Schiffer P, Schmidt A, Scholten O, Schoorlemmer H, Schovancova J, Schovánek P, Schröder F, Schulte S, Schuster D, Sciutto SJ, Scuderi M, Segreto A, Settimo M, Shadkam A, Shellard RC, Sidelnik I, Sigl G, Silva Lopez HH, Smiałkowski A, Smída R, Snow GR, Sommers P, Sorokin J, Spinka H, Squartini R, Stanic S, Stapleton J, Stasielak J, Stephan M, Stutz A, Suarez F, Suomijärvi T, Supanitsky AD, Suša T, Sutherland MS, Swain J, Szadkowski Z, Szuba M, Tamashiro A, Tapia A, Tartare M, Taşcău O, Tavera Ruiz CG, Tcaciuc R, Tegolo D, Thao NT, Thomas D, Tiffenberg J, Timmermans C, Tiwari DK, Tkaczyk W, Todero Peixoto CJ, Tomé B, Tonachini A, Travnicek P, Tridapalli DB, Tristram G, Trovato E, Tueros M, Ulrich R, Unger M, Urban M, Valdés Galicia JF, Valiño I, Valore L, van den Berg AM, Varela E, Vargas Cárdenas B, Vázquez JR, Vázquez RA, Veberič D, Verzi V, Vicha J, Videla M, Villaseñor L, Wahlberg H, Wahrlich P, Wainberg O, Walz D, Warner D, Watson AA, Weber M, Weidenhaupt K, Weindl A, Westerhoff S, Whelan BJ, Wieczorek G, Wiencke L, Wilczyńska B, Wilczyński H, Will M, Williams C, Winchen T, Winnick MG, Wommer M, Wundheiler B, Yamamoto T, Yapici T, Younk P, Yuan G, Yushkov A, Zamorano B, Zas E, Zavrtanik D, Zavrtanik M, Zaw I, Zepeda A, Zhu Y, Zimbres Silva M, Ziolkowski M. Measurement of the proton-air cross section at √s=57 TeV with the Pierre Auger Observatory. Phys Rev Lett 2012; 109:062002. [PMID: 23006259 DOI: 10.1103/physrevlett.109.062002] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2011] [Indexed: 06/01/2023]
Abstract
We report a measurement of the proton-air cross section for particle production at the center-of-mass energy per nucleon of 57 TeV. This is derived from the distribution of the depths of shower maxima observed with the Pierre Auger Observatory: systematic uncertainties are studied in detail. Analyzing the tail of the distribution of the shower maxima, a proton-air cross section of [505±22(stat)(-36)(+28)(syst)] mb is found.
Collapse
Affiliation(s)
- P Abreu
- LIP and Instituto Superior Técnico, Technical University of Lisbon, Lisbon, Portugal
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
18
|
Tiwari DK, Jin T, Behari J. Bio-distribution and toxicity assessment of intravenously injected anti-HER2 antibody conjugated CdSe/ZnS quantum dots in Wistar rats. Int J Nanomedicine 2011; 6:463-75. [PMID: 21499435 PMCID: PMC3075911 DOI: 10.2147/ijn.s15124] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2011] [Indexed: 12/03/2022] Open
Abstract
Anti-HER2 antibody conjugated with quantum dots (anti-HER2ab-QDs) is a very recent fluorescent nanoprobe for HER2+ve breast cancer imaging. In this study we investigated in-vivo toxicity of anti-HER2ab conjugated CdSe/ZnS QDs in Wistar rats. For toxicity evaluation of injected QDs sample, body weight, organ coefficient, complete blood count (CBC), biochemistry panel assay (AST, ALT, ALP, and GGTP), comet assay, reactive oxygen species, histology, and apoptosis were determined. Wistar rat (8-10 weeks old) were randomly divided into 4 treatment groups (n = 6). CBC and biochemistry panel assay showed nonsignificant changes in the anti-HER2ab-QDs treated group but these changes were significant (P < 0.05) in QDs treated group. No tissue damage, inflammation, lesions, and QDs deposition were found in histology and TEM images of the anti-HER2ab-QDs treated group. Apoptosis in liver and kidney was not found in the anti-HER2ab-QDs treated group. Animals treated with nonconjugated QDs showed comet formation and apoptosis. Cadmium deposition was confirmed in the QDs treated group compared with the anti-HER2ab-QDs treated group. The QDs concentration (500 nM) used for this study is suitable for in-vivo imaging. The combine data of this study support the biocompatibility of anti-HER2ab-QDs for breast cancer imaging, suggesting that the antibody coating assists in controlling any possible adverse effect of quantum dots.
Collapse
Affiliation(s)
- Dhermendra K Tiwari
- School of Environmental Sciences, Jawaharlal Nehru University, New Delhi, India
| | - Takashi Jin
- WPI-Immunology Frontier Research Center, Osaka University, Osaka, Japan
| | - Jitendra Behari
- School of Environmental Sciences, Jawaharlal Nehru University, New Delhi, India
| |
Collapse
|
19
|
Tanaka SI, Miyazaki J, Tiwari DK, Jin T, Inouye Y. Fluorescent Platinum Nanoclusters: Synthesis, Purification, Characterization, and Application to Bioimaging. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201004907] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
20
|
Tanaka SI, Miyazaki J, Tiwari DK, Jin T, Inouye Y. Fluorescent Platinum Nanoclusters: Synthesis, Purification, Characterization, and Application to Bioimaging. Angew Chem Int Ed Engl 2010; 50:431-5. [DOI: 10.1002/anie.201004907] [Citation(s) in RCA: 206] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
21
|
Abstract
This study aims to suggest the limits of silver nanoparticle (AgNP) uses for medicinal purpose and was performed to explore the effect of various doses of silver nanoparticle in rats. Four different doses of AgNP (4, 10, 20, and 40 mg/kg) were injected intravenously. For safety evaluation of injected AgNP, body weight, organ coefficient, whole blood count, and biochemistry panel assay for liver function enzyme (AST, ALT, ALP, and GGTP), comet assay, ROS, and histological parameter were performed; 10-12 week old animals were randomly divided into groups of six individuals each for control, and doses of 40, 20, 10, and 4 mg/kg AgNP injected. Significant changes were observed (p < 0.01) in hematological parameters (WBC count, platelets counts, haemoglobin, and RBC count) in the 40 and 20 mg/kg groups. The changes were non-significant in the other groups (4 and 10 mg/kg group). In the 40 mg/kg group, a significant increase was also found in liver function enzymes like ALT and AST (p < 0.01), ALP (p < 0.01), GGTP (p < 0.01), and bilirubin (p < 0.01). ROS in blood serum increased in the high dose group. Tail migration in single cell gel electrophoresis in the 40, 20, 10, 4 mg/kg, and control groups was 34.9, 29.5, 17.8, 5.8, and 0.0 µm, respectively, which indicated damage in the DNA strand in the high dose group. EDXRF showed a ∼ 10-times increase in silver concentration in the 40 mg/kg group and TEM image also showed particle deposition in the 40 mg/kg group. This study indicates that the AgNP in doses (< 10 mg/kg) is safe for biomedical application and has no side-effects, but its high dose (> 20 mg/kg) is toxic.
Collapse
Affiliation(s)
- Dhermendra K Tiwari
- School of Environmental Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | | | | |
Collapse
|
22
|
Jin T, Tiwari DK, Tanaka SI, Inouye Y, Yoshizawa K, Watanabe TM. Antibody-protein A conjugated quantum dots for multiplexed imaging of surface receptors in living cells. Mol Biosyst 2010; 6:2325-31. [PMID: 20835432 DOI: 10.1039/c0mb00056f] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
To use quantum dots (QDs) as fluorescent probes for receptor imaging, QD surface should be modified with biomolecules such as antibodies, peptides, carbohydrates, and small-molecule ligands for receptors. Among these QDs, antibody conjugated QDs are the most promising fluorescent probes. There are many kinds of coupling reactions that can be used for preparing antibody conjugated QDs. Most of the antibody coupling reactions, however, are non-selective and time-consuming. In this paper, we report a facile method for preparing antibody conjugated QDs for surface receptor imaging. We used ProteinA as an adaptor protein for binding of antibody to QDs. By using ProteinA conjugated QDs, various types of antibodies are easily attached to the surface of the QDs via non-covalent binding between the F(c) (fragment crystallization) region of antibody and ProteinA. To show the utility of ProteinA conjugated QDs, HER2 (anti-human epidermal growth factor receptor 2) in KPL-4 human breast cancer cells were stained by using anti-HER2 antibody conjugated ProteinA-QDs. In addition, multiplexed imaging of HER2 and CXCR4 (chemokine receptor) in the KPL-4 cells was performed. The result showed that CXCR4 receptors coexist with HER2 receptors in the membrane surface of KPL-4 cells. ProteinA mediated antibody conjugation to QDs is very useful to prepare fluorescent probes for multiplexed imaging of surface receptors in living cells.
Collapse
Affiliation(s)
- Takashi Jin
- WPI Immunology Frontier Research Center, Osaka University, Yamada-oka 1-3, Suita, Osaka 565-0871, Japan.
| | | | | | | | | | | |
Collapse
|
23
|
Tiwari DK, Tanaka SI, Inouye Y, Yoshizawa K, Watanabe TM, Jin T. Synthesis and Characterization of Anti-HER2 Antibody Conjugated CdSe/CdZnS Quantum Dots for Fluorescence Imaging of Breast Cancer Cells. Sensors (Basel) 2009; 9:9332-64. [PMID: 22291567 PMCID: PMC3260644 DOI: 10.3390/s91109332] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/21/2009] [Revised: 11/03/2009] [Accepted: 11/12/2009] [Indexed: 01/01/2023]
Abstract
The early detection of HER2 (human epidermal growth factor receptor 2) status in breast cancer patients is very important for the effective implementation of anti-HER2 antibody therapy. Recently, HER2 detections using antibody conjugated quantum dots (QDs) have attracted much attention. QDs are a new class of fluorescent materials that have superior properties such as high brightness, high resistance to photo-bleaching, and multi-colored emission by a single-light source excitation. In this study, we synthesized three types of anti-HER2 antibody conjugated QDs (HER2Ab-QDs) using different coupling agents (EDC/sulfo-NHS, iminothiolane/sulfo-SMCC, and sulfo-SMCC). As water-soluble QDs for the conjugation of antibody, we used glutathione coated CdSe/CdZnS QDs (GSH-QDs) with fluorescence quantum yields of 0.23∼0.39 in aqueous solution. Dispersibility, hydrodynamic size, and apparent molecular weights of the GSH-QDs and HER2Ab-QDs were characterized by using dynamic light scattering, fluorescence correlation spectroscopy, atomic force microscope, and size-exclusion HPLC. Fluorescence imaging of HER2 overexpressing cells (KPL-4 human breast cancer cell line) was performed by using HER2Ab-QDs as fluorescent probes. We found that the HER2Ab-QD prepared by using SMCC coupling with partially reduced antibody is a most effective probe for the detection of HER2 expression in KPL-4 cells. We have also studied the size dependency of HER2Ab-QDs (with green, orange, and red emission) on the fluorescence image of KPL-4 cells.
Collapse
Affiliation(s)
- Dhermendra K. Tiwari
- WPI Immunology Frontier Research Center, Osaka University, Yamada-oka 1-3, Suita, Osaka 565-0871, Japan; E-Mails: (D.T.); (K.Y.); (T.W.)
| | - Shin-Ichi Tanaka
- Graduate School of Frontier Biosciences, Osaka University, Yamada-oka 2-1, Suita, Osaka 565-0871, Japan; E-Mails: (S.T.); (Y.I.)
| | - Yasushi Inouye
- Graduate School of Frontier Biosciences, Osaka University, Yamada-oka 2-1, Suita, Osaka 565-0871, Japan; E-Mails: (S.T.); (Y.I.)
| | - Keiko Yoshizawa
- WPI Immunology Frontier Research Center, Osaka University, Yamada-oka 1-3, Suita, Osaka 565-0871, Japan; E-Mails: (D.T.); (K.Y.); (T.W.)
| | - Tomonobu M. Watanabe
- WPI Immunology Frontier Research Center, Osaka University, Yamada-oka 1-3, Suita, Osaka 565-0871, Japan; E-Mails: (D.T.); (K.Y.); (T.W.)
| | - Takashi Jin
- WPI Immunology Frontier Research Center, Osaka University, Yamada-oka 1-3, Suita, Osaka 565-0871, Japan; E-Mails: (D.T.); (K.Y.); (T.W.)
- Graduate School of Frontier Biosciences, Osaka University, Yamada-oka 2-1, Suita, Osaka 565-0871, Japan; E-Mails: (S.T.); (Y.I.)
| |
Collapse
|
24
|
Tiwari DK. How the sweet killer ORS was killed. J Indian Med Assoc 1996; 94:119-20. [PMID: 8810215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
|
25
|
Tiwari DK. Sweet killers. Indian Pediatr 1990; 27:510-1. [PMID: 2276785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
|
26
|
Tiwari DK, Misra PK, Sharma B. Blood sugar, free fatty acids and triglycerides in infants of diabetic mothers. Indian J Pediatr 1985; 52:79-83. [PMID: 4007983 DOI: 10.1007/bf02754724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
|
27
|
Misra PK, Tiwari DK, Sharma B, Kaul R. Free fatty acids and triglycerides in normoglycemic low birth weight newborns in early neonatal period. Indian J Pediatr 1984; 51:637-41. [PMID: 6537399 DOI: 10.1007/bf02776378] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
|