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Lopez V, Schuh HJM, Mirza S, Vaaßen VJ, Schmidt MS, Sylvester K, Idris RM, Renn C, Schäkel L, Pelletier J, Sévigny J, Naggi A, Scheffler B, Lee SY, Bendas G, Müller CE. Heparins are potent inhibitors of ectonucleotide pyrophosphatase/phospho-diesterase-1 (NPP1) - a promising target for the immunotherapy of cancer. Front Immunol 2023; 14:1173634. [PMID: 37711611 PMCID: PMC10497752 DOI: 10.3389/fimmu.2023.1173634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Accepted: 07/03/2023] [Indexed: 09/16/2023] Open
Abstract
Introduction Heparins, naturally occurring glycosaminoglycans, are widely used for thrombosis prevention. Upon application as anticoagulants in cancer patients, heparins were found to possess additional antitumor activities. Ectonucleotidases have recently been proposed as novel targets for cancer immunotherapy. Methods and results In the present study, we discovered that heparin and its derivatives act as potent, selective, allosteric inhibitors of the poorly investigated ectonucleotidase NPP1 (nucleotide pyrophosphatase/phosphodiesterase-1, CD203a). Structure-activity relationships indicated that NPP1 inhibition could be separated from the compounds' antithrombotic effect. Moreover, unfractionated heparin (UFH) and different low molecular weight heparins (LMWHs) inhibited extracellular adenosine production by the NPP1-expressing glioma cell line U87 at therapeutically relevant concentrations. As a consequence, heparins inhibited the ability of U87 cell supernatants to induce CD4+ T cell differentiation into immunosuppressive Treg cells. Discussion NPP1 inhibition likely contributes to the anti-cancer effects of heparins, and their specific optimization may lead to improved therapeutics for the immunotherapy of cancer.
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Affiliation(s)
- Vittoria Lopez
- Pharmaceutical Institute, Pharmaceutical and Medicinal Chemistry, University of Bonn, Bonn, Germany
- PharmaCenter Bonn, University of Bonn, Bonn, Germany
| | - H. J. Maximilian Schuh
- Pharmaceutical Institute, Pharmaceutical and Cell Biological Chemistry, University of Bonn, Bonn, Germany
| | - Salahuddin Mirza
- Pharmaceutical Institute, Pharmaceutical and Medicinal Chemistry, University of Bonn, Bonn, Germany
- PharmaCenter Bonn, University of Bonn, Bonn, Germany
| | - Victoria J. Vaaßen
- Pharmaceutical Institute, Pharmaceutical and Medicinal Chemistry, University of Bonn, Bonn, Germany
- PharmaCenter Bonn, University of Bonn, Bonn, Germany
| | - Michael S. Schmidt
- Pharmaceutical Institute, Pharmaceutical and Cell Biological Chemistry, University of Bonn, Bonn, Germany
| | - Katharina Sylvester
- Pharmaceutical Institute, Pharmaceutical and Medicinal Chemistry, University of Bonn, Bonn, Germany
- PharmaCenter Bonn, University of Bonn, Bonn, Germany
| | - Riham M. Idris
- Pharmaceutical Institute, Pharmaceutical and Medicinal Chemistry, University of Bonn, Bonn, Germany
- PharmaCenter Bonn, University of Bonn, Bonn, Germany
| | - Christian Renn
- Pharmaceutical Institute, Pharmaceutical and Medicinal Chemistry, University of Bonn, Bonn, Germany
- PharmaCenter Bonn, University of Bonn, Bonn, Germany
| | - Laura Schäkel
- Pharmaceutical Institute, Pharmaceutical and Medicinal Chemistry, University of Bonn, Bonn, Germany
- PharmaCenter Bonn, University of Bonn, Bonn, Germany
| | - Julie Pelletier
- Centre de Recherche du CHU de Québec-Université Laval, Québec, QC, Canada
| | - Jean Sévigny
- Centre de Recherche du CHU de Québec-Université Laval, Québec, QC, Canada
- Départment de Microbiologie-Infectiologie et d’Immunologie, Faculté de Médecine, Université Laval, Quebec, QC, Canada
| | - Annamaria Naggi
- Institute for Chemical and Biochemical Research “G. Ronzoni”, Milan, Italy
| | - Björn Scheffler
- DKFZ Division Translational Neurooncology at the West German Cancer Center (WTZ), DKTK Partner site, University Hospital Essen and German Cancer Research Center, Heidelberg, Germany
| | - Sang-Yong Lee
- Pharmaceutical Institute, Pharmaceutical and Medicinal Chemistry, University of Bonn, Bonn, Germany
- PharmaCenter Bonn, University of Bonn, Bonn, Germany
| | - Gerd Bendas
- Pharmaceutical Institute, Pharmaceutical and Cell Biological Chemistry, University of Bonn, Bonn, Germany
| | - Christa E. Müller
- Pharmaceutical Institute, Pharmaceutical and Medicinal Chemistry, University of Bonn, Bonn, Germany
- PharmaCenter Bonn, University of Bonn, Bonn, Germany
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2
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Lopez V, Schäkel L, Schuh HJM, Schmidt MS, Mirza S, Renn C, Pelletier J, Lee SY, Sévigny J, Alban S, Bendas G, Müller CE. Sulfated Polysaccharides from Macroalgae Are Potent Dual Inhibitors of Human ATP-Hydrolyzing Ectonucleotidases NPP1 and CD39. Mar Drugs 2021; 19:md19020051. [PMID: 33499103 PMCID: PMC7911304 DOI: 10.3390/md19020051] [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] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 01/14/2021] [Accepted: 01/15/2021] [Indexed: 12/25/2022] Open
Abstract
Extracellular ATP mediates proinflammatory and antiproliferative effects via activation of P2 nucleotide receptors. In contrast, its metabolite, the nucleoside adenosine, is strongly immunosuppressive and enhances tumor proliferation and metastasis. The conversion of ATP to adenosine is catalyzed by ectonucleotidases, which are expressed on immune cells and typically upregulated on tumor cells. In the present study, we identified sulfopolysaccharides from brown and red sea algae to act as potent dual inhibitors of the main ATP-hydrolyzing ectoenzymes, ectonucleotide pyrophosphatase/phosphodiesterase-1 (NPP1) and ecto-nucleoside triphosphate diphosphohydrolase-1 (NTPDase1, CD39), showing nano- to picomolar potency and displaying a non-competitive mechanism of inhibition. We showed that one of the sulfopolysaccharides tested as a representative example reduced adenosine formation at the surface of the human glioblastoma cell line U87 in a concentration-dependent manner. These natural products represent the most potent inhibitors of extracellular ATP hydrolysis known to date and have potential as novel therapeutics for the immunotherapy of cancer.
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Affiliation(s)
- Vittoria Lopez
- Pharmaceutical & Medicinal Chemistry, Pharmaceutical Institute, University of Bonn, An der Immenburg 4, 53121 Bonn, Germany; (V.L.); (L.S.); (S.M.); (C.R.); (S.-Y.L.)
- PharmaCenter Bonn, University of Bonn, An der Immenburg 4, 53121 Bonn, Germany
| | - Laura Schäkel
- Pharmaceutical & Medicinal Chemistry, Pharmaceutical Institute, University of Bonn, An der Immenburg 4, 53121 Bonn, Germany; (V.L.); (L.S.); (S.M.); (C.R.); (S.-Y.L.)
- PharmaCenter Bonn, University of Bonn, An der Immenburg 4, 53121 Bonn, Germany
| | - H. J. Maximilian Schuh
- Pharmaceutical & Cell Biological Chemistry, Pharmaceutical Institute, University of Bonn, An der Immenburg 4, 53121 Bonn, Germany; (H.J.M.S.); (M.S.S.); (G.B.)
| | - Michael S. Schmidt
- Pharmaceutical & Cell Biological Chemistry, Pharmaceutical Institute, University of Bonn, An der Immenburg 4, 53121 Bonn, Germany; (H.J.M.S.); (M.S.S.); (G.B.)
| | - Salahuddin Mirza
- Pharmaceutical & Medicinal Chemistry, Pharmaceutical Institute, University of Bonn, An der Immenburg 4, 53121 Bonn, Germany; (V.L.); (L.S.); (S.M.); (C.R.); (S.-Y.L.)
- PharmaCenter Bonn, University of Bonn, An der Immenburg 4, 53121 Bonn, Germany
| | - Christian Renn
- Pharmaceutical & Medicinal Chemistry, Pharmaceutical Institute, University of Bonn, An der Immenburg 4, 53121 Bonn, Germany; (V.L.); (L.S.); (S.M.); (C.R.); (S.-Y.L.)
- PharmaCenter Bonn, University of Bonn, An der Immenburg 4, 53121 Bonn, Germany
| | - Julie Pelletier
- Centre de Recherche du CHU de Québec—Université Laval, Québec City, QC G1V 4G2, Canada; (J.P.); (J.S.)
| | - Sang-Yong Lee
- Pharmaceutical & Medicinal Chemistry, Pharmaceutical Institute, University of Bonn, An der Immenburg 4, 53121 Bonn, Germany; (V.L.); (L.S.); (S.M.); (C.R.); (S.-Y.L.)
- PharmaCenter Bonn, University of Bonn, An der Immenburg 4, 53121 Bonn, Germany
| | - Jean Sévigny
- Centre de Recherche du CHU de Québec—Université Laval, Québec City, QC G1V 4G2, Canada; (J.P.); (J.S.)
- Départment de Microbiologie-Infectiologie et d’Immunologie, Faculté de Médecine, Université Laval, Quebec City, QC G1V 0A6, Canada
| | - Susanne Alban
- Pharmaceutical Institute, Christian-Albrechts-University of Kiel, Gutenbergstraße 76, 24118 Kiel, Germany;
| | - Gerd Bendas
- Pharmaceutical & Cell Biological Chemistry, Pharmaceutical Institute, University of Bonn, An der Immenburg 4, 53121 Bonn, Germany; (H.J.M.S.); (M.S.S.); (G.B.)
| | - Christa E. Müller
- Pharmaceutical & Medicinal Chemistry, Pharmaceutical Institute, University of Bonn, An der Immenburg 4, 53121 Bonn, Germany; (V.L.); (L.S.); (S.M.); (C.R.); (S.-Y.L.)
- PharmaCenter Bonn, University of Bonn, An der Immenburg 4, 53121 Bonn, Germany
- Correspondence: ; Tel.: +49-228-73-2301; Fax: +49-228-73-2567
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Fornasaro S, Alsamad F, Baia M, Batista de Carvalho LAE, Beleites C, Byrne HJ, Chiadò A, Chis M, Chisanga M, Daniel A, Dybas J, Eppe G, Falgayrac G, Faulds K, Gebavi H, Giorgis F, Goodacre R, Graham D, La Manna P, Laing S, Litti L, Lyng FM, Malek K, Malherbe C, Marques MPM, Meneghetti M, Mitri E, Mohaček-Grošev V, Morasso C, Muhamadali H, Musto P, Novara C, Pannico M, Penel G, Piot O, Rindzevicius T, Rusu EA, Schmidt MS, Sergo V, Sockalingum GD, Untereiner V, Vanna R, Wiercigroch E, Bonifacio A. Surface Enhanced Raman Spectroscopy for Quantitative Analysis: Results of a Large-Scale European Multi-Instrument Interlaboratory Study. Anal Chem 2020; 92:4053-4064. [PMID: 32045217 PMCID: PMC7997108 DOI: 10.1021/acs.analchem.9b05658] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
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Surface-enhanced
Raman scattering (SERS) is a powerful and sensitive
technique for the detection of fingerprint signals of molecules and
for the investigation of a series of surface chemical reactions. Many
studies introduced quantitative applications of SERS in various fields,
and several SERS methods have been implemented for each specific application,
ranging in performance characteristics, analytes used, instruments,
and analytical matrices. In general, very few methods have been validated
according to international guidelines. As a consequence, the application
of SERS in highly regulated environments is still considered risky,
and the perception of a poorly reproducible and insufficiently robust
analytical technique has persistently retarded its routine implementation.
Collaborative trials are a type of interlaboratory study (ILS) frequently
performed to ascertain the quality of a single analytical method.
The idea of an ILS of quantification with SERS arose within the framework
of Working Group 1 (WG1) of the EU COST Action BM1401 Raman4Clinics
in an effort to overcome the problematic perception of quantitative
SERS methods. Here, we report the first interlaboratory SERS study
ever conducted, involving 15 laboratories and 44 researchers. In this
study, we tried to define a methodology to assess the reproducibility
and trueness of a quantitative SERS method and to compare different
methods. In our opinion, this is a first important step toward a “standardization”
process of SERS protocols, not proposed by a single laboratory but
by a larger community.
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Affiliation(s)
- Stefano Fornasaro
- Raman Spectroscopy Lab, Department of Engineering and Architecture, University of Trieste, P.le Europa 1, 34100 Trieste, Italy
| | - Fatima Alsamad
- Université de Reims Champagne-Ardenne, BioSpecT-EA7506, UFR de Pharmacie, 51 rue Cognacq-Jay, 51097 Reims, France
| | - Monica Baia
- Faculty of Physics, Babes-Bolyai University, M. Kogalniceanu 1, 400084 Cluj-Napoca, Romania
| | - Luís A E Batista de Carvalho
- Molecular-Physical Chemistry R&D Unit, Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal
| | | | - Hugh J Byrne
- FOCAS Research Institute, Technological University Dublin, Kevin Street, Dublin 8, Ireland
| | - Alessandro Chiadò
- Department of Applied Science and Technology, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Torino, Italy
| | - Mihaela Chis
- Faculty of Physics, Babes-Bolyai University, M. Kogalniceanu 1, 400084 Cluj-Napoca, Romania
| | - Malama Chisanga
- School of Chemistry, Manchester Institute of Biotechnology, University of Manchester, Manchester, United Kingdom M1 7DN
| | - Amuthachelvi Daniel
- Radiation and Environmental Science Centre, FOCAS Research Institute, Technological University Dublin, Kevin Street, Dublin 8, Ireland
| | - Jakub Dybas
- Jagiellonian Centre for Experimental Therapeutics, Jagiellonian University, ul. Gronostajowa 2, 30-384 Krakow, Poland
| | - Gauthier Eppe
- Mass Spectrometry Laboratory (MSLab), MolSys RU, University of Liège, Liège, Belgium
| | - Guillaume Falgayrac
- Univ. Lille, Univ. Littoral Côte d'Opale, EA 4490 - PMOI, F-59000 Lille, France
| | - Karen Faulds
- Bionanotechnology Research Section, Department of Pure and Applied Chemistry, University of Strathclyde, 99 George Street, Glasgow, G1 1RD, United Kingdom
| | - Hrvoje Gebavi
- Centre of Excellence for Advanced Materials and Sensing Devices, Division of Materials Physics, Rudjer Boskovic Institute, Bijenicka c. 54, 10000 Zagreb, Croatia
| | - Fabrizio Giorgis
- Department of Applied Science and Technology, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Torino, Italy
| | - Royston Goodacre
- Department of Biochemistry, Institute of Integrative Biology, University of Liverpool, Liverpool, United Kingdom, L69 7ZB
| | - Duncan Graham
- Bionanotechnology Research Section, Department of Pure and Applied Chemistry, University of Strathclyde, 99 George Street, Glasgow, G1 1RD, United Kingdom
| | - Pietro La Manna
- Institute on Polymers, Composites and Biomaterials, National Research Council of Italy, via Campi Flegrei, 34, Pozzuoli, Naples 80078, Italy
| | - Stacey Laing
- Bionanotechnology Research Section, Department of Pure and Applied Chemistry, University of Strathclyde, 99 George Street, Glasgow, G1 1RD, United Kingdom
| | - Lucio Litti
- Nanostructures and Optics Laboratory, Department of Chemical Sciences, University of Padova, Via Marzolo 1 - 35131, Padova, Italy
| | - Fiona M Lyng
- Radiation and Environmental Science Centre, FOCAS Research Institute, Technological University Dublin, Kevin Street, Dublin 8, Ireland
| | - Kamilla Malek
- Jagiellonian Centre for Experimental Therapeutics, Jagiellonian University, ul. Gronostajowa 2, 30-384 Krakow, Poland
| | - Cedric Malherbe
- Mass Spectrometry Laboratory (MSLab), MolSys RU, University of Liège, Liège, Belgium
| | - Maria P M Marques
- Molecular-Physical Chemistry R&D Unit, Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal.,Department of Life Sciences, University of Coimbra, 3000-456 Coimbra, Portugal
| | - Moreno Meneghetti
- Nanostructures and Optics Laboratory, Department of Chemical Sciences, University of Padova, Via Marzolo 1 - 35131, Padova, Italy
| | - Elisa Mitri
- Raman Spectroscopy Lab, Department of Engineering and Architecture, University of Trieste, P.le Europa 1, 34100 Trieste, Italy
| | - Vlasta Mohaček-Grošev
- Centre of Excellence for Advanced Materials and Sensing Devices, Division of Materials Physics, Rudjer Boskovic Institute, Bijenicka c. 54, 10000 Zagreb, Croatia
| | - Carlo Morasso
- Nanomedicine and Molecular Imaging Lab, Istituti Clinici Scientifici Maugeri IRCCS, Via Maugeri 4, 27100 Pavia, Italy
| | - Howbeer Muhamadali
- Department of Biochemistry, Institute of Integrative Biology, University of Liverpool, Liverpool, United Kingdom, L69 7ZB
| | - Pellegrino Musto
- Institute on Polymers, Composites and Biomaterials, National Research Council of Italy, via Campi Flegrei, 34, Pozzuoli, Naples 80078, Italy
| | - Chiara Novara
- Department of Applied Science and Technology, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Torino, Italy
| | - Marianna Pannico
- Institute on Polymers, Composites and Biomaterials, National Research Council of Italy, via Campi Flegrei, 34, Pozzuoli, Naples 80078, Italy
| | - Guillaume Penel
- Univ. Lille, Univ. Littoral Côte d'Opale, EA 4490 - PMOI, F-59000 Lille, France
| | - Olivier Piot
- Université de Reims Champagne-Ardenne, BioSpecT-EA7506, UFR de Pharmacie, 51 rue Cognacq-Jay, 51097 Reims, France
| | - Tomas Rindzevicius
- Technical University of Denmark, Department of Health Technology, Ørsteds Plads, Building 345C, DK-2800 Kgs. Lyngby, Denmark
| | - Elena A Rusu
- Faculty of Physics, Babes-Bolyai University, M. Kogalniceanu 1, 400084 Cluj-Napoca, Romania
| | | | - Valter Sergo
- Raman Spectroscopy Lab, Department of Engineering and Architecture, University of Trieste, P.le Europa 1, 34100 Trieste, Italy.,Faculty of Health Sciences, University of Macau, SAR Macau, China
| | - Ganesh D Sockalingum
- Université de Reims Champagne-Ardenne, BioSpecT-EA7506, UFR de Pharmacie, 51 rue Cognacq-Jay, 51097 Reims, France
| | - Valérie Untereiner
- Université de Reims Champagne-Ardenne, BioSpecT-EA7506, UFR de Pharmacie, 51 rue Cognacq-Jay, 51097 Reims, France
| | - Renzo Vanna
- Nanomedicine and Molecular Imaging Lab, Istituti Clinici Scientifici Maugeri IRCCS, Via Maugeri 4, 27100 Pavia, Italy
| | - Ewelina Wiercigroch
- Jagiellonian Centre for Experimental Therapeutics, Jagiellonian University, ul. Gronostajowa 2, 30-384 Krakow, Poland
| | - Alois Bonifacio
- Raman Spectroscopy Lab, Department of Engineering and Architecture, University of Trieste, P.le Europa 1, 34100 Trieste, Italy
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Viehrig M, Rajendran ST, Sanger K, Schmidt MS, Alstrøm TS, Rindzevicius T, Zór K, Boisen A. Quantitative SERS Assay on a Single Chip Enabled by Electrochemically Assisted Regeneration: A Method for Detection of Melamine in Milk. Anal Chem 2020; 92:4317-4325. [DOI: 10.1021/acs.analchem.9b05060] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [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)
- Marlitt Viehrig
- The Danish National Research Foundation and Villum Foundation’s Center for Intelligent Drug Delivery and Sensing Using Microcontainers and Nanomechanics (IDUN), Department of Health Technology, Technical University of Denmark, Kgs. Lyngby, 2800, Denmark
| | - Sriram T. Rajendran
- The Danish National Research Foundation and Villum Foundation’s Center for Intelligent Drug Delivery and Sensing Using Microcontainers and Nanomechanics (IDUN), Department of Health Technology, Technical University of Denmark, Kgs. Lyngby, 2800, Denmark
| | - Kuldeep Sanger
- The Danish National Research Foundation and Villum Foundation’s Center for Intelligent Drug Delivery and Sensing Using Microcontainers and Nanomechanics (IDUN), Department of Health Technology, Technical University of Denmark, Kgs. Lyngby, 2800, Denmark
| | - Michael S. Schmidt
- The Danish National Research Foundation and Villum Foundation’s Center for Intelligent Drug Delivery and Sensing Using Microcontainers and Nanomechanics (IDUN), Department of Health Technology, Technical University of Denmark, Kgs. Lyngby, 2800, Denmark
| | - Tommy S. Alstrøm
- The Danish National Research Foundation and Villum Foundation’s Center for Intelligent Drug Delivery and Sensing Using Microcontainers and Nanomechanics (IDUN), Department of Health Technology, Technical University of Denmark, Kgs. Lyngby, 2800, Denmark
- Department of Applied Mathematics and Computer Science, Technical University of Denmark, Kgs. Lyngby, 2800, Denmark
| | - Tomas Rindzevicius
- The Danish National Research Foundation and Villum Foundation’s Center for Intelligent Drug Delivery and Sensing Using Microcontainers and Nanomechanics (IDUN), Department of Health Technology, Technical University of Denmark, Kgs. Lyngby, 2800, Denmark
| | - Kinga Zór
- The Danish National Research Foundation and Villum Foundation’s Center for Intelligent Drug Delivery and Sensing Using Microcontainers and Nanomechanics (IDUN), Department of Health Technology, Technical University of Denmark, Kgs. Lyngby, 2800, Denmark
| | - Anja Boisen
- The Danish National Research Foundation and Villum Foundation’s Center for Intelligent Drug Delivery and Sensing Using Microcontainers and Nanomechanics (IDUN), Department of Health Technology, Technical University of Denmark, Kgs. Lyngby, 2800, Denmark
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5
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Schmidt MS, Vega‐Westhoff M. Rare but conceivable: Determining the likelihood of meteors and other infrequent events. Proc Safety Prog 2019. [DOI: 10.1002/prs.12090] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Michael S. Schmidt
- Department of Engineering ManagementMissouri University of Science and Technology (MS&T) Rolla Missouri
- Department of Chemical EngineeringMissouri University of Science and Technology (MS&T) Rolla Missouri
- Bluefield Process Safety St. Louis Missouri
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6
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Viehrig M, Thilsted AH, Matteucci M, Wu K, Catak D, Schmidt MS, Zór K, Boisen A. Injection-Molded Microfluidic Device for SERS Sensing Using Embedded Au-Capped Polymer Nanocones. ACS Appl Mater Interfaces 2018; 10:37417-37425. [PMID: 30277378 DOI: 10.1021/acsami.8b13424] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
To enable affordable detection and diagnostic, there is a need for low-cost and mass producible miniaturized sensing platforms. We present a fully polymeric microfluidic lab-on-a-chip device with integrated gold (Au)-capped nanocones for sensing applications based on surface-enhanced Raman spectroscopy (SERS). All base components of the device were fabricated via injection molding (IM) and can be easily integrated using ultrasonic welding. The SERS sensor array, embedded in the bottom of a fluidic channel, was created by evaporating Au onto IM nanocone structures, resulting in densely packed Au-capped SERS active nanostructures. Using a Raman active model analyte, trans-1,2-bis-(4-pyridyl)-ethylene, we found a surface-averaged SERS enhancement factor of ∼5 × 106 with a relative standard deviation of 14% over the sensor area (2 × 2 mm2), and a 18% signal variation among substrates. This reproducible fabrication method is cost-effective, less time consuming, and allows mass production of fully integrated polymeric, microfluidic systems with embedded high-density and high-aspect ratio SERS sensor.
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Affiliation(s)
- Marlitt Viehrig
- The Danish National Research Foundation and Villum Foundation's Center for Intelligent Drug Delivery and Sensing Using Microcontainers and Nanomechanics (IDUN), Department of Micro- and Nanotechnology , Technical University of Denmark , Ørsted Plads , 2800 Kgs. Lyngby , Denmark
| | - Anil H Thilsted
- The Danish National Research Foundation and Villum Foundation's Center for Intelligent Drug Delivery and Sensing Using Microcontainers and Nanomechanics (IDUN), Department of Micro- and Nanotechnology , Technical University of Denmark , Ørsted Plads , 2800 Kgs. Lyngby , Denmark
| | - Marco Matteucci
- The Danish National Research Foundation and Villum Foundation's Center for Intelligent Drug Delivery and Sensing Using Microcontainers and Nanomechanics (IDUN), Department of Micro- and Nanotechnology , Technical University of Denmark , Ørsted Plads , 2800 Kgs. Lyngby , Denmark
| | - Kaiyu Wu
- The Danish National Research Foundation and Villum Foundation's Center for Intelligent Drug Delivery and Sensing Using Microcontainers and Nanomechanics (IDUN), Department of Micro- and Nanotechnology , Technical University of Denmark , Ørsted Plads , 2800 Kgs. Lyngby , Denmark
| | - Darmin Catak
- The Danish National Research Foundation and Villum Foundation's Center for Intelligent Drug Delivery and Sensing Using Microcontainers and Nanomechanics (IDUN), Department of Micro- and Nanotechnology , Technical University of Denmark , Ørsted Plads , 2800 Kgs. Lyngby , Denmark
| | - Michael S Schmidt
- The Danish National Research Foundation and Villum Foundation's Center for Intelligent Drug Delivery and Sensing Using Microcontainers and Nanomechanics (IDUN), Department of Micro- and Nanotechnology , Technical University of Denmark , Ørsted Plads , 2800 Kgs. Lyngby , Denmark
| | - Kinga Zór
- The Danish National Research Foundation and Villum Foundation's Center for Intelligent Drug Delivery and Sensing Using Microcontainers and Nanomechanics (IDUN), Department of Micro- and Nanotechnology , Technical University of Denmark , Ørsted Plads , 2800 Kgs. Lyngby , Denmark
| | - Anja Boisen
- The Danish National Research Foundation and Villum Foundation's Center for Intelligent Drug Delivery and Sensing Using Microcontainers and Nanomechanics (IDUN), Department of Micro- and Nanotechnology , Technical University of Denmark , Ørsted Plads , 2800 Kgs. Lyngby , Denmark
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7
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Affiliation(s)
- Michael S. Schmidt
- Bluefield Process Safety LLC; 3101 Cherokee Street, Saint Louis MO 63118
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8
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Li T, Wu K, Rindzevicius T, Wang Z, Schulte L, Schmidt MS, Boisen A, Ndoni S. Wafer-Scale Nanopillars Derived from Block Copolymer Lithography for Surface-Enhanced Raman Spectroscopy. ACS Appl Mater Interfaces 2016; 8:15668-15675. [PMID: 27254397 DOI: 10.1021/acsami.6b05431] [Citation(s) in RCA: 16] [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] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We report a novel nanofabrication process via block copolymer lithography using solvent vapor annealing. The nanolithography process is facile and scalable, enabling fabrication of highly ordered periodic patterns over entire wafers as substrates for surface-enhanced Raman spectroscopy (SERS). Direct silicon etching with high aspect ratio templated by the block copolymer mask is realized without any intermediate layer or external precursors. Uniquely, an atomic layer deposition (ALD)-assisted method is introduced to allow reversing of the morphology relative to the initial pattern. As a result, highly ordered silicon nanopillar arrays are fabricated with controlled aspect ratios. After metallization, the resulting nanopillar arrays are suitable for SERS applications. These structures readily exhibit an average SERS enhancement factor of above 10(8), SERS uniformities of 8.5% relative standard deviation across 4 cm, and 6.5% relative standard deviation over 5 × 5 mm(2) surface area, as well as a very low SERS background. The as-prepared SERS substrate, with a good enhancement and large-area uniformity, is promising for practical SERS sensing applications.
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Affiliation(s)
- Tao Li
- Department of Micro- and Nanotechnology, Technical University of Denmark (DTU) , Anker Engelunds Vej 1, Kongens Lyngby 2800, Denmark
| | - Kaiyu Wu
- Department of Micro- and Nanotechnology, Technical University of Denmark (DTU) , Anker Engelunds Vej 1, Kongens Lyngby 2800, Denmark
| | - Tomas Rindzevicius
- Department of Micro- and Nanotechnology, Technical University of Denmark (DTU) , Anker Engelunds Vej 1, Kongens Lyngby 2800, Denmark
| | - Zhongli Wang
- Department of Micro- and Nanotechnology, Technical University of Denmark (DTU) , Anker Engelunds Vej 1, Kongens Lyngby 2800, Denmark
| | - Lars Schulte
- Department of Micro- and Nanotechnology, Technical University of Denmark (DTU) , Anker Engelunds Vej 1, Kongens Lyngby 2800, Denmark
| | - Michael S Schmidt
- Department of Micro- and Nanotechnology, Technical University of Denmark (DTU) , Anker Engelunds Vej 1, Kongens Lyngby 2800, Denmark
| | - Anja Boisen
- Department of Micro- and Nanotechnology, Technical University of Denmark (DTU) , Anker Engelunds Vej 1, Kongens Lyngby 2800, Denmark
| | - Sokol Ndoni
- Department of Micro- and Nanotechnology, Technical University of Denmark (DTU) , Anker Engelunds Vej 1, Kongens Lyngby 2800, Denmark
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Palla M, Bosco FG, Yang J, Rindzevicius T, Alstrom TS, Schmidt MS, Lin Q, Ju J, Boisen A. Mathematical Model for Biomolecular Quantification Using Large-Area Surface-Enhanced Raman Spectroscopy Mapping. RSC Adv 2015; 5:85845-85853. [PMID: 27148445 DOI: 10.1039/c5ra16108h] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Surface-enhanced Raman spectroscopy (SERS) based on nanostructured platforms is a promising technique for quantitative and highly sensitive detection of biomolecules in the field of analytical biochemistry. Here, we report a mathematical model to predict experimental SERS signal (or hotspot) intensity distributions of target molecules on receptor-functionalized nanopillar substrates for biomolecular quantification. We demonstrate that by utilizing only a small set of empirically determined parameters, our general theoretical framework agrees with the experimental data particularly well in the picomolar concentration regimes. This developed model may be generally used for biomolecular quantification using Raman mapping on SERS substrates with planar geometries, in which the hotspots are approximated as electromagnetic enhancement fields generated by closely spaced dimers. Lastly, we also show that the detection limit of a specific target molecule, TAMRA-labeled vasopressin, approaches the single molecule level, thus opening up an exciting new chapter in the field of SERS quantification.
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Affiliation(s)
- Mirkó Palla
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, Massachusetts 02115, United States; Department of Mechanical Engineering, Columbia University, New York, New York 10027, United States
| | - Filippo G Bosco
- Department of Micro- and Nanotechnology, Technical University of Denmark, Lyngby 2800, Denmark
| | - Jaeyoung Yang
- Department of Mechanical Engineering, Columbia University, New York, New York 10027, United States
| | - Tomas Rindzevicius
- Department of Micro- and Nanotechnology, Technical University of Denmark, Lyngby 2800, Denmark
| | - Tommy S Alstrom
- Department of Applied Mathematics and Computer Science, Technical University of Denmark, Lyngby 2800, Denmark
| | - Michael S Schmidt
- Department of Micro- and Nanotechnology, Technical University of Denmark, Lyngby 2800, Denmark
| | - Qiao Lin
- Department of Mechanical Engineering, Columbia University, New York, New York 10027, United States
| | - Jingyue Ju
- Department of Chemical Engineering, Columbia University, New York, New York 10027, United States
| | - Anja Boisen
- Department of Micro- and Nanotechnology, Technical University of Denmark, Lyngby 2800, Denmark
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Sellers AJ, Schmidt MS. Auditing IPLs-using safety critical functions manuals. Proc Safety Prog 2014. [DOI: 10.1002/prs.11709] [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: 11/07/2022]
Affiliation(s)
- Alex J. Sellers
- Bluefield Process Safety, LLC; 3101 Cherokee Street Saint Louis MO 63118
| | - Michael S. Schmidt
- Bluefield Process Safety, LLC; 3101 Cherokee Street Saint Louis MO 63118
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Zhu X, Shi L, Schmidt MS, Boisen A, Hansen O, Zi J, Xiao S, Mortensen NA. Enhanced light-matter interactions in graphene-covered gold nanovoid arrays. Nano Lett 2013; 13:4690-6. [PMID: 24010940 DOI: 10.1021/nl402120t] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The combination of graphene with noble-metal nanostructures is currently being explored for strong light-graphene interactions enhanced by plasmons. We introduce a novel hybrid graphene-metal system for studying light-matter interactions with gold-void nanostructures exhibiting resonances in the visible range. Enhanced coupling of graphene to the plasmon modes of the nanovoid arrays results in significant frequency shifts of the underlying plasmon resonances, enabling 30% enhanced absolute light absorption by adding a monolayer graphene and up to 700-fold enhancement of the Raman response of the graphene. These new perspectives enable us to verify the presence of graphene on gold-void arrays, and the enhancement even allows us to accurately quantify the number of layers. Experimental observations are further supported by numerical simulations and perturbation-theory analysis. The graphene gold-void platform is beneficial for sensing of molecules and placing Rhodamine 6G (R6G) dye molecules on top of the graphene; we observe a strong enhancement of the R6G Raman fingerprints. These results pave the way toward advanced substrates for surface-enhanced Raman scattering (SERS) with potential for unambiguous single-molecule detection on the atomically well-defined layer of graphene.
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Affiliation(s)
- Xiaolong Zhu
- Department of Photonics Engineering, Technical University of Denmark , DK-2800 Kongens Lyngby, Denmark
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Wierzbicki R, Købler C, Jensen MRB, Łopacińska J, Schmidt MS, Skolimowski M, Abeille F, Qvortrup K, Mølhave K. Mapping the complex morphology of cell interactions with nanowire substrates using FIB-SEM. PLoS One 2013; 8:e53307. [PMID: 23326412 PMCID: PMC3541134 DOI: 10.1371/journal.pone.0053307] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [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: 07/27/2012] [Accepted: 11/27/2012] [Indexed: 11/19/2022] Open
Abstract
Using high resolution focused ion beam scanning electron microscopy (FIB-SEM) we study the details of cell-nanostructure interactions using serial block face imaging. 3T3 Fibroblast cellular monolayers are cultured on flat glass as a control surface and on two types of nanostructured scaffold substrates made from silicon black (Nanograss) with low- and high nanowire density. After culturing for 72 hours the cells were fixed, heavy metal stained, embedded in resin, and processed with FIB-SEM block face imaging without removing the substrate. The sample preparation procedure, image acquisition and image post-processing were specifically optimised for cellular monolayers cultured on nanostructured substrates. Cells display a wide range of interactions with the nanostructures depending on the surface morphology, but also greatly varying from one cell to another on the same substrate, illustrating a wide phenotypic variability. Depending on the substrate and cell, we observe that cells could for instance: break the nanowires and engulf them, flatten the nanowires or simply reside on top of them. Given the complexity of interactions, we have categorised our observations and created an overview map. The results demonstrate that detailed nanoscale resolution images are required to begin understanding the wide variety of individual cells’ interactions with a structured substrate. The map will provide a framework for light microscopy studies of such interactions indicating what modes of interactions must be considered.
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Affiliation(s)
| | - Carsten Købler
- DTU Nanotech, Technical University of Denmark, Lyngby, Denmark
- DTU CEN, Technical University of Denmark, Lyngby, Denmark
| | | | | | | | | | - Fabien Abeille
- DTU Nanotech, Technical University of Denmark, Lyngby, Denmark
| | - Klaus Qvortrup
- Department of Biomedical Sciences, CFIM, University of Copenhagen, Copenhagen, Denmark
| | - Kristian Mølhave
- DTU Nanotech, Technical University of Denmark, Lyngby, Denmark
- * E-mail:
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Łopacińska JM, Grădinaru C, Wierzbicki R, Købler C, Schmidt MS, Madsen MT, Skolimowski M, Dufva M, Flyvbjerg H, Mølhave K. Cell motility, morphology, viability and proliferation in response to nanotopography on silicon black. Nanoscale 2012; 4:3739-3745. [PMID: 22614757 DOI: 10.1039/c2nr11455k] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Knowledge of cells' interactions with nanostructured materials is fundamental for bio-nanotechnology. We present results for how individual mouse fibroblasts from cell line NIH3T3 respond to highly spiked surfaces of silicon black that were fabricated by maskless reactive ion etching (RIE). We did standard measurements of cell viability, proliferation, and morphology on various surfaces. We also analyzed the motility of cells on the same surfaces, as recorded in time lapse movies of sparsely populated cell cultures. We find that motility and morphology vary strongly with nano-patterns, while viability and proliferation show little dependence on substrate type. We conclude that motility analysis can show a wide range of cell responses e.g. over a factor of two in cell speed to different nano-topographies, where standard assays, such as viability or proliferation, in the tested cases show much less variation of the order 10-20%.
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Affiliation(s)
- Joanna M Łopacińska
- Department of Micro- and Nanotechnology, Technical University of Denmark, Ørsteds Plads 345a, 2800 Kongens Lyngby, Denmark.
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Schmidt MS, Kilpatrick D. A tale of two plants: Using LOPA for SIL assignment. Proc Safety Prog 2012. [DOI: 10.1002/prs.11477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Klarskov MB, Dam HF, Petersen DH, Hansen TM, Löwenborg A, Booth TJ, Schmidt MS, Lin R, Nielsen PF, Bøggild P. Fast and direct measurements of the electrical properties of graphene using micro four-point probes. Nanotechnology 2011; 22:445702. [PMID: 21975563 DOI: 10.1088/0957-4484/22/44/445702] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We present measurements of the electronic properties of graphene using a repositionable micro four-point probe system, which we show here to have unique advantages over measurements made on lithographically defined devices; namely speed, simplicity and lack of a need to pattern graphene. Measurements are performed in ambient, vacuum and controlled environmental conditions using an environmental scanning electron microscope (SEM). The results are comparable to previous results for microcleaved graphene on silicon dioxide (SiO(2)). We observe a pronounced hysteresis of the charge neutrality point, dependent on the sweep rate of the gate voltage; and environmental measurements provide insight into the sensor application prospects of graphene. The method offers a fast, local and non-destructive technique for electronic measurements on graphene, which can be positioned freely on a graphene flake.
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Affiliation(s)
- M B Klarskov
- Department of Micro- and Nanotechnology, Technical University of Denmark, DTU Nanotech, Kongens Lyngby, Denmark
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Papadimos TJ, Flores AS, Schmidt MS, Borst MJ. Bivona® Hyperflex tracheostomy tube occlusion causing spurious tachypnoea and tracheal ulceration. Eur J Anaesthesiol 2007; 24:472-3. [PMID: 17207295 DOI: 10.1017/s0265021506001992] [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] [Subscribe] [Scholar Register] [Accepted: 10/13/2006] [Indexed: 11/08/2022]
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Abstract
Adult rats were trained on a white versus black card discrimination in a circular water tank. Three independent variables were manipulated: lesion (sham, lateral occipital, medial occipital), dose of ORG 2766 administered (0 or 25 micrograms in saline on alternate days for 18 days), and time of administration (during the post-surgical recovery interval or during post-operative testing). Both visual cortical lesions produced a prominent retention deficit and defective pattern vision. Neither post-surgical nor concurrent administration of ORG 2766 improved visual functions. These results, along with a growing body of evidence, challenge the generality of the positive influences of ORG 2766 upon behavioral recovery observed in animals with limbic lesions.
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Affiliation(s)
- M S Schmidt
- Department of Psychology, Georgia College, Milledgeville 31061
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Abstract
After learning position discrimination in a T-maze water escape task, rats had either a 2 mm section of the middle cerebral artery removed bilaterally (bMCA) or they received a sham operation. Beginning on the day of surgery either total brain gangliosides (50 mg kg-1) or saline were administered daily for five days. Of the several measures of neurological function that were tested, only a temporary deficit in grasping with the front paws was observed in bMCA damaged rats. Ganglioside treatment normalized this practical function. Memory of the preoperative habit was not influenced by bMCA damage, but acquisition of a reversal of this habit was compromised. Ganglioside treatment did not influence this deficit. Acquisition of a spatial alternation strategy was influenced by neither the bMCA lesion nor the ganglioside treatment. The preservation that accompanies bMCA interruption might serve as a useful model of the functional declines that accompany stroke and frontal lobe damage.
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Affiliation(s)
- W F McDaniel
- Department of Psychology, Georgia College, Milledgeville 31061
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Schmidt MS. Report of the Executive Secretary, State Board for Nursing the State Education Department. J N Y State Nurses Assoc 1982; 13:18-21. [PMID: 6962829] [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: 01/22/2023]
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Schmidt MS. Report of the executive secretary to the State Board of Nursing. J N Y State Nurses Assoc 1980; 11:9-13. [PMID: 6934278] [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: 01/22/2023]
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Schmidt MS. Why a separate organization for state boards? Am J Nurs 1980; 80:724-6. [PMID: 6987875] [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: 01/22/2023]
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Schmidt MS. Report of the Executive Secretary, State Board for Nursing. J N Y State Nurses Assoc 1979; 10:10-4. [PMID: 292760] [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: 12/14/2022]
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Schmidt MS. Report of the Executive Secretary, State Board for Nursing. J N Y State Nurses Assoc 1978; 9:17-20. [PMID: 282396] [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: 12/14/2022]
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Schmidt MS. Report of the Executive Secretary, State Board for Nursing. J N Y State Nurses Assoc 1977; 8:15-8. [PMID: 271685] [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: 12/14/2022]
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Schmidt MS. Report of the executive secretary, state board for nursing. J N Y State Nurses Assoc 1976; 7:9-11. [PMID: 1069841] [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: 12/25/2022]
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Schmidt MS. New York State's experience in licensing foreign educated nurses. J N Y State Nurses Assoc 1974; 5:7-13. [PMID: 4532687] [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: 01/11/2023]
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Schmidt MS, Lyons W. Credit for what you know. Am J Nurs 1969; 69:101-4. [PMID: 5188922] [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: 01/14/2023]
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Schmidt MS. Legal considerations in nursing. N Y State Nurse 1968; 40:12-4. [PMID: 5248645] [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: 01/14/2023]
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Schmidt MS. THE HOSPITAL: a laboratory for the teaching of nursing. J Nurs Educ 1966; 5:17-27. [PMID: 4379401 DOI: 10.3928/0148-4834-19660401-07] [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] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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