1
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Feng H, Linders J, Cantore M, Fabrizi J, Kirsten A, Myszkowska S, Hillen E, Uteschil F, Buchholz S, Hermsen A, Garvin MD, Ferenz KB, Mayer C. Cross-linked Triblock Peptide Capsules as Potential Oxygen Carriers. ChemistryOpen 2024; 13:e202300282. [PMID: 38471961 PMCID: PMC11004465 DOI: 10.1002/open.202300282] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 02/25/2024] [Indexed: 03/14/2024] Open
Abstract
Perfluorodecalin (PFD)-filled capsules have been studied for over 15 years as artificial oxygen carriers. However, none of these capsules combines good biocompatibility, good mechanical stability and dispersion stability. Here we propose to use synthetic triblock peptides containing a central block of cysteine units as a cross-linking shell material for capsules with both good biocompatibility and stability. Together with outer aspartate units and inner phenylalanine units, the resulting amphiphilic triblock peptides can encapsulate PFD efficiently to prepare capsules with a suitable diameter, a certain mechanical strength, a large diffusion constant, fast gas exchange rates, and little cytotoxicity. Given the above advantages, these PFD-filled peptide capsules are very promising as potential artificial oxygen carriers.
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Affiliation(s)
- Huayang Feng
- Institute for Physical ChemistryCeNIDEUniversity of Duisburg-Essen45141EssenGermany
| | - Jürgen Linders
- Institute for Physical ChemistryCeNIDEUniversity of Duisburg-Essen45141EssenGermany
| | - Miriam Cantore
- Institute of PhysiologyUniversity Hospital EssenCeNIDEUniversity of Duisburg-Essen45147EssenGermany
| | - Jonas Fabrizi
- Institute of Inorganic Chemistry and Structural ChemistryHeinrich-Heine-Universität Düsseldorf40225DüsseldorfGermany
| | - Annika Kirsten
- Institute for Physical ChemistryCeNIDEUniversity of Duisburg-Essen45141EssenGermany
| | - Sascha Myszkowska
- Institute for Physical ChemistryCeNIDEUniversity of Duisburg-Essen45141EssenGermany
| | - Eva Hillen
- Institute of PhysiologyUniversity Hospital EssenCeNIDEUniversity of Duisburg-Essen45147EssenGermany
| | - Florian Uteschil
- Applied Analytical ChemistryUniversity of Duisburg-Essen45141EssenGermany
| | - Sebastian Buchholz
- Institute for Technical ChemistryUniversity of Duisburg-Essen45141EssenGermany
| | - Andrea Hermsen
- Institute for Physical ChemistryCeNIDEUniversity of Duisburg-Essen45141EssenGermany
- Department of Chemistry and ILOCNiederrhein University of Applied Sciences47805KrefeldGermany
| | - Maria Davila Garvin
- Institute for Physical ChemistryCeNIDEUniversity of Duisburg-Essen45141EssenGermany
| | - Katja Bettina Ferenz
- Institute of PhysiologyUniversity Hospital EssenCeNIDEUniversity of Duisburg-Essen45147EssenGermany
| | - Christian Mayer
- Institute for Physical ChemistryCeNIDEUniversity of Duisburg-Essen45141EssenGermany
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2
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Azhdari S, Herrmann F, Coban D, Linders J, Gröschel AH. Confinement-Assembly of Terpolymer-based Janus Nanoparticles. Macromol Rapid Commun 2022; 43:e2100932. [PMID: 35377525 DOI: 10.1002/marc.202100932] [Citation(s) in RCA: 2] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 03/24/2022] [Indexed: 11/09/2022]
Abstract
While the confinement assembly of block copolymers (BCPs) into functional microparticles has been extensively studied, little is known about the behavior of Janus nanoparticles (JNPs) in spherical confinement. Here, we investigate the confinement self-assembly of JNPs in drying emulsion droplets and compare their behavior to their ABC triblock terpolymer precursor. Emulsions of both materials were prepared using Shirasu Porous Glass (SPG) membranes leading to narrow size distributions of the microparticles with average hydrodynamic radii in the range of Rh = 250 - 500 nm (depending on the pore radius, Rpore ). The internal structure of the microparticles was verified with transmission electron microscopy (TEM) on ultrathin cross-sections and compared to the corresponding bulk morphologies. While the confinement-assembly of terpolymers resulted in microparticles with ordered inner morphologies, order for JNPs diminished when the Janus balance (JB) deviated from parity. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Suna Azhdari
- Physical Chemistry, University of Münster Corrensstraße 28-30, Münster, 48149, Germany
| | - Fabian Herrmann
- Pharmaceutical Biology and Phytochemistry, University of Münster Corrensstrasse 48, Münster, 48149, Germany
| | - Deniz Coban
- Physical Chemistry, University of Münster Corrensstraße 28-30, Münster, 48149, Germany
| | - Jürgen Linders
- Physical Chemistry, University Duisburg-Essen Universitätsstr. 2, Essen, 45141, Germany
| | - André H Gröschel
- Physical Chemistry, University of Münster Corrensstraße 28-30, Münster, 48149, Germany
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3
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Etemad-Parishanzadeh O, Ali W, Linders J, Straube T, Lutz H, Aggarwal V, Mayer C, Textor T, Gutmann JS, Mayer-Gall T. Characterization and Optimization of AZO Nanoparticles as Coatings for Flexible Substrates toward High IR Reflectivity. ACS Appl Mater Interfaces 2021; 13:61707-61722. [PMID: 34913672 DOI: 10.1021/acsami.1c22151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Energy consumption by air-conditioning is expansive and leads to the emission of millions of tons of CO2 every year. A promising approach to circumvent this problem is the reflection of solar radiation: Rooms that would not heat up by irradiation will not need to be cooled down. Especially, transparent conductive metal oxides exhibit high infrared (IR) reflectivity and are commonly applied as low-emissivity coatings (low-e coatings). Indium tin oxide (ITO) coatings are the state-of-the-art application, though indium is a rare and expensive resource. This work demonstrates that aluminum-doped zinc oxide (AZO) can be a suitable alternative to ITO for IR-reflection applications. AZO synthesized here exhibits better emissivity to be used as roofing membrane coatings for buildings in comparison to commercially available ITO coatings. AZO particles forming the reflective coating are generated via solvothermal synthesis routes and obtain high conductivity and IR reflectivity without the need of any further post-thermal treatment. Different synthesis parameters were studied, and their effects on both conductive and optical properties of the AZO nanoparticles were evaluated. To this end, a series of characterization methods, especially 27Al-nuclear magnetic resonance spectroscopy (27Al-NMR) analysis, have been conducted for a deeper insight into the particles' structure to understand the differences in conductivity and optical properties. The optimized AZO nanoparticles were coated on flexible transparent textile-based roofing membranes and tested as low-e coatings. The membranes demonstrated higher thermal reflectance compared with commercial ITO materials with an emissivity value lowered by 16%.
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Affiliation(s)
| | - Wael Ali
- Deutsches Textilforschungszentrum Nord-West (DTNW) gGmbH, Adlerstr.1, 47798 Krefeld, Germany
- Institute of Physical Chemistry and Center for Nano Integration (CENIDE), University of Duisburg-Essen, Universitätsstr. 2, 45141 Essen, Germany
| | - Jürgen Linders
- Institute of Physical Chemistry and Center for Nano Integration (CENIDE), University of Duisburg-Essen, Universitätsstr. 2, 45141 Essen, Germany
| | - Thomas Straube
- Low & Bonar GmbH, Rheinstrasse 11, 41836 Hückelhoven, Germany
| | - Harald Lutz
- CHT Germany GmbH, Bismarckstr. 102, 72072 Tübingen, Germany
| | - Vikas Aggarwal
- CHT Germany GmbH, Bismarckstr. 102, 72072 Tübingen, Germany
| | - Christian Mayer
- Institute of Physical Chemistry and Center for Nano Integration (CENIDE), University of Duisburg-Essen, Universitätsstr. 2, 45141 Essen, Germany
| | - Torsten Textor
- Reutlingen University, School of Textiles and Design, 72762 Reutlingen, Germany
| | - Jochen S Gutmann
- Deutsches Textilforschungszentrum Nord-West (DTNW) gGmbH, Adlerstr.1, 47798 Krefeld, Germany
- Institute of Physical Chemistry and Center for Nano Integration (CENIDE), University of Duisburg-Essen, Universitätsstr. 2, 45141 Essen, Germany
| | - Thomas Mayer-Gall
- Deutsches Textilforschungszentrum Nord-West (DTNW) gGmbH, Adlerstr.1, 47798 Krefeld, Germany
- Institute of Physical Chemistry and Center for Nano Integration (CENIDE), University of Duisburg-Essen, Universitätsstr. 2, 45141 Essen, Germany
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4
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Ghosh S, Glöckler E, Wölper C, Linders J, Janoszka N, Gröschel AH, Schulz S. Comparison of the Catalytic Activity of Mono‐ and Multinuclear Ga Complexes in the ROCOP of Epoxides and Cyclic Anhydrides. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202101017] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Swarup Ghosh
- Faculty of Chemistry University of Duisburg-Essen and Center for Nanointegration Duisburg-Essen (CENIDE) Universitätsstr. 7, S07 S03 C30 45141 Essen Germany
| | - Eduard Glöckler
- Faculty of Chemistry University of Duisburg-Essen and Center for Nanointegration Duisburg-Essen (CENIDE) Universitätsstr. 7, S07 S03 C30 45141 Essen Germany
| | - Christoph Wölper
- Faculty of Chemistry University of Duisburg-Essen and Center for Nanointegration Duisburg-Essen (CENIDE) Universitätsstr. 7, S07 S03 C30 45141 Essen Germany
| | - Jürgen Linders
- Faculty of Physical Chemistry University of Duisburg-Essen Universitätsstraße 5 45141 Essen Germany
| | - Nicole Janoszka
- Faculty of Chemistry University of Münster and Center for Soft Nanoscience (SoN) Busso-Peus-Strasse 10 48149 Münster Germany
| | - André H. Gröschel
- Faculty of Chemistry University of Münster and Center for Soft Nanoscience (SoN) Busso-Peus-Strasse 10 48149 Münster Germany
| | - Stephan Schulz
- Faculty of Chemistry University of Duisburg-Essen and Center for Nanointegration Duisburg-Essen (CENIDE) Universitätsstr. 7, S07 S03 C30 45141 Essen Germany
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Thiele M, Octa-Smolin F, Thölke S, Wölper C, Linders J, Mayer C, Haberhauer G, Niemeyer J. A supramolecular double-helix based on complementary phosphate-guanidinium pairing. Chem Commun (Camb) 2021; 57:9842-9845. [PMID: 34487128 DOI: 10.1039/d1cc04644f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A double-helical supramolecular structure was formed by self-assembly of 1,1'-binaphthyl-based bisguanidines and bisphosphoric acids. Interestingly the homochiral (S,S) + (S,S)-pair forms a left-handed double-helix, while the heterochiral (S,S) + (R,R)-pair forms a non-helical dimer.
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Affiliation(s)
- Maike Thiele
- Faculty of Chemistry, Organic Chemistry and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Universitätsstrasse 7, 45141 Essen, Germany.
| | - Frescilia Octa-Smolin
- Faculty of Chemistry, Organic Chemistry and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Universitätsstrasse 7, 45141 Essen, Germany.
| | - Simon Thölke
- Faculty of Chemistry, Organic Chemistry and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Universitätsstrasse 7, 45141 Essen, Germany.
| | - Christoph Wölper
- Faculty of Chemistry, Inorganic Chemistry, University of Duisburg-Essen, Germany
| | - Jürgen Linders
- Faculty of Chemistry, Physical Chemistry, University of Duisburg-Essen, Germany
| | - Christian Mayer
- Faculty of Chemistry, Physical Chemistry, University of Duisburg-Essen, Germany
| | - Gebhard Haberhauer
- Faculty of Chemistry, Organic Chemistry and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Universitätsstrasse 7, 45141 Essen, Germany.
| | - Jochen Niemeyer
- Faculty of Chemistry, Organic Chemistry and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Universitätsstrasse 7, 45141 Essen, Germany.
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6
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Schakowski KM, Elm C, Linders J, Kirsch M. Synthesis and characterization of enzymatically active micrometer protein-capsules. Artif Cells Nanomed Biotechnol 2021; 49:606-613. [PMID: 34559040 DOI: 10.1080/21691401.2021.1955698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
This work describes a general method for the encapsulation of enzymes with albumin as wall material and the enzyme catalase as prime example. Care was taken for the preparation of biochemically active sub-micrometer particles in order to prevent oxygen toxicity induced by artificial oxygen carriers of any type. In cell culture experiments, capsules containing catalase did not exhibit any harmful activities in the absence of peroxides. In the presence of hydrogen peroxide application of low and medium dosed capsules below 0.05 vol% (final concentration 0.001 vol%) even increased the cell damaging process. However, a higher dosage of capsules (>0.05 vol%) prevented completely cellular disruption induced by 5 mM hydrogen peroxide and decreased up to 90% of cellular damage at higher peroxide concentrations. These results demonstrated that encapsulated catalase was enzymatically active and the over-all activity of prepared catalase capsules was determined to be >1900 U mL-1 vol%-1.
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Affiliation(s)
- Kai Melvin Schakowski
- Institute of Physiological Chemistry, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Christian Elm
- Institute of Physiological Chemistry, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Jürgen Linders
- Department of Physical Chemistry, University of Duisburg-Essen, Essen, Germany.,Center for Nanointegration Duisburg-Essen (CeNIDE), University of Duisburg-Essen, Duisburg, Germany
| | - Michael Kirsch
- Institute of Physiological Chemistry, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
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Affiliation(s)
- Carlos G. Lopez
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, 52056 Aachen, Germany
| | - Jürgen Linders
- Physical Chemistry and Center for Nanointegration Duisburg-Essen (CeNIDE), University of Duisburg-Essen, 45117 Essen, Germany
| | - Christian Mayer
- Physical Chemistry and Center for Nanointegration Duisburg-Essen (CeNIDE), University of Duisburg-Essen, 45117 Essen, Germany
| | - Walter Richtering
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, 52056 Aachen, Germany
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8
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Abstract
The design of an encapsulation system consisting of a synthetic peptide which is fully biodegradable into non-toxic constituents. This system should be capable of encapsulating perfluorinated hydrocarbons and should be a promising basis for oxygen carriers to be used as artificial blood replacement. A diblock-peptide is synthesised following a phosgene-free method and characterised by 1H-NMR. Subsequently, this diblock-peptide is self-assembled with perfluorodecalin (PFD) to form PFD-filled capsules as potential artificial oxygen carriers allowing for rapid oxygen uptake and release. The diblock-peptide Bu-PAsp10-PPhe10 is successfully synthesised and used to encapsulate PFD. The capsules have a spherical shape with an average diameter of 360 nm in stable aqueous dispersion. NMR measurements prove their physical capability for reversible uptake and release of oxygen. The resulting capsules are expected to be fully biodegradable and possibly could act as oxygen carriers for artificial blood replacement.
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Affiliation(s)
- Huayang Feng
- Institute for Physical Chemistry, CeNIDE, University of Duisburg-Essen, Essen, Germany
| | - Jürgen Linders
- Institute for Physical Chemistry, CeNIDE, University of Duisburg-Essen, Essen, Germany
| | - Sascha Myszkowska
- Institute for Physical Chemistry, CeNIDE, University of Duisburg-Essen, Essen, Germany
| | - Christian Mayer
- Institute for Physical Chemistry, CeNIDE, University of Duisburg-Essen, Essen, Germany
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9
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Mayer D, Guerrero F, Goanvec C, Hetzel L, Linders J, Ljubkovic M, Kreczy A, Mayer C, Kirsch M, Ferenz KB. Prevention of Decompression Sickness by Novel Artificial Oxygen Carriers. Med Sci Sports Exerc 2021; 52:2127-2135. [PMID: 32251255 DOI: 10.1249/mss.0000000000002354] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
For three decades, studies have demonstrated the therapeutic efficacy of perfluorocarbon (PFC) in reducing the onset of decompression trauma. However, none of these emulsion-based preparations are accepted for therapeutic use in the western world, mainly because of severe side effects and a long organ retention time. A new development to guarantee a stable dispersion without these disadvantages is the encapsulation of PFC in nanocapsules with an albumin shell. PURPOSE Newly designed albumin-derived perfluorocarbon-based artificial oxygen carriers (A-AOC) are used in a rodent in vivo model as a preventive therapy for decompression sickness (DCS). METHODS Thirty-seven rats were treated with A-AOC (n = 12), albumin nanocapsules filled with neutral oil (A-O-N, n = 12), or 5% human serum albumin solution (A-0-0, n = 13) before a simulated dive. Eleven rats, injected with A-AOC, stayed at normal pressure (A-AOC surface). Clinical, laboratory, and histological evaluations were performed. RESULTS The occurrence of DCS depended on the treatment group. A-AOC significantly reduced DCS appearance and mortality. Furthermore, a significant improvement of survival time was found (A-AOC compared with A-0-0). Histological assessment of A-AOC-dive compared with A-0-0-dive animals revealed significantly higher accumulation of macrophages, but less blood congestion in the spleen and significantly less hepatic circulatory disturbance, vacuolization, and cell damage. Compared with nondiving controls, lactate and myoglobin showed a significant increase in the A-0-0- but not in the A-AOC-dive group. CONCLUSION Intravenous application of A-AOC was well tolerated and effective in reducing the occurrence of DCS, and animals showed significantly higher survival rates and less symptoms compared with the albumin group (A-0-0). Analysis of histological results and fast reacting plasma parameters confirmed the preventive properties of A-AOC.
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Affiliation(s)
| | | | | | - Lisa Hetzel
- Institute of Physical Chemistry, University Duisburg-Essen, CENIDE, Essen, GERMANY
| | - Jürgen Linders
- Institute of Physical Chemistry, University Duisburg-Essen, CENIDE, Essen, GERMANY
| | - Marko Ljubkovic
- Department of Integrative Physiology, Medical School University of Split, Split, CROATIA
| | - Alfons Kreczy
- Department of Pathology, REGIOMED Klinikum Coburg, Coburg, GERMANY
| | - Christian Mayer
- Institute of Physical Chemistry, University Duisburg-Essen, CENIDE, Essen, GERMANY
| | - Michael Kirsch
- Institute of Physiological Chemistry, University Hospital Essen, University Duisburg-Essen, Essen, GERMANY
| | - Katja Bettina Ferenz
- Institute of Physiology, University Hospital Essen, University Duisburg-Essen, CENIDE, Essen, GERMANY
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10
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van der Meer SB, Seiler T, Buchmann C, Partalidou G, Boden S, Loza K, Heggen M, Linders J, Prymak O, Oliveira CLP, Hartmann L, Epple M. Controlling the Surface Functionalization of Ultrasmall Gold Nanoparticles by Sequence-Defined Macromolecules. Chemistry 2021; 27:1451-1464. [PMID: 32959929 PMCID: PMC7898849 DOI: 10.1002/chem.202003804] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2020] [Revised: 09/15/2020] [Indexed: 02/06/2023]
Abstract
Ultrasmall gold nanoparticles (diameter about 2 nm) were surface-functionalized with cysteine-carrying precision macromolecules. These consisted of sequence-defined oligo(amidoamine)s (OAAs) with either two or six cysteine molecules for binding to the gold surface and either with or without a PEG chain (3400 Da). They were characterized by 1 H NMR spectroscopy, 1 H NMR diffusion-ordered spectroscopy (DOSY), small-angle X-ray scattering (SAXS), and high-resolution transmission electron microscopy. The number of precision macromolecules per nanoparticle was determined after fluorescent labeling by UV spectroscopy and also by quantitative 1 H NMR spectroscopy. Each nanoparticle carried between 40 and 100 OAA ligands, depending on the number of cysteine units per OAA. The footprint of each ligand was about 0.074 nm2 per cysteine molecule. OAAs are well suited to stabilize ultrasmall gold nanoparticles by selective surface conjugation and can be used to selectively cover their surface. The presence of the PEG chain considerably increased the hydrodynamic diameter of both dissolved macromolecules and macromolecule-conjugated gold nanoparticles.
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Affiliation(s)
- Selina Beatrice van der Meer
- Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CeNIDE)University of Duisburg-EssenUniversitätsstr. 5–745117EssenGermany
| | - Theresa Seiler
- Organic Chemistry and Macromolecular ChemistryHeinrich Heine-University DüsseldorfUniversitätsstr. 140225DüsseldorfGermany
| | - Christin Buchmann
- Organic Chemistry and Macromolecular ChemistryHeinrich Heine-University DüsseldorfUniversitätsstr. 140225DüsseldorfGermany
| | - Georgia Partalidou
- Organic Chemistry and Macromolecular ChemistryHeinrich Heine-University DüsseldorfUniversitätsstr. 140225DüsseldorfGermany
| | - Sophia Boden
- Organic Chemistry and Macromolecular ChemistryHeinrich Heine-University DüsseldorfUniversitätsstr. 140225DüsseldorfGermany
| | - Kateryna Loza
- Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CeNIDE)University of Duisburg-EssenUniversitätsstr. 5–745117EssenGermany
| | - Marc Heggen
- Ernst Ruska-Center for Microscopy and Spectroscopy with ElectronsForschungszentrum Jülich GmbH52425JülichGermany
| | - Jürgen Linders
- Physical Chemistry and Center for Nanointegration Duisburg-Essen (CeNIDE)University of Duisburg-EssenUniversitätsstr. 5–745117EssenGermany
| | - Oleg Prymak
- Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CeNIDE)University of Duisburg-EssenUniversitätsstr. 5–745117EssenGermany
| | | | - Laura Hartmann
- Organic Chemistry and Macromolecular ChemistryHeinrich Heine-University DüsseldorfUniversitätsstr. 140225DüsseldorfGermany
| | - Matthias Epple
- Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CeNIDE)University of Duisburg-EssenUniversitätsstr. 5–745117EssenGermany
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11
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Schakowski KM, Linders J, Ferenz KB, Kirsch M. Synthesis and characterisation of aqueous haemoglobin-based microcapsules coated by genipin-cross-linked albumin. J Microencapsul 2020; 37:193-204. [PMID: 31950867 DOI: 10.1080/02652048.2020.1715498] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Bovine serum albumin (BSA)-coated haemoglobin (Hb)-microcapsules prepared by co-precipitation of Hb and MnCO3 may present an alternative type of artificial blood substitute. Prepared microcapsules were analysed by Scanning electron microscopy (SEM) and Respirometry, cytotoxicity was evaluated by addition of microcapsules to murine fibroblast-derived cell line L929 (American Type Culture Collection, NCTC clone 929 of strain L). The capsules come along with a mean diameter of approximately 0.6 μm and a mean volume of 1.13 × 10-19 L, thus an average human red blood cell with a volume of 9 × 10-14 L is about 800,000 times bigger. Hb-microcapsules are fully regenerable by ascorbic acid and maintain oxygen affinity because oxygen is able to pass the BSA wall of the capsules and thereby binding to the ferrous iron of the haemoglobin entity. Therefore, these microcapsules present a suitable type of potential artificial haemoglobin-based oxygen carrier (HbOC).
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Affiliation(s)
- Kai Melvin Schakowski
- Institute of Physiological Chemistry, University of Duisburg-Essen, University Hospital Essen, Essen, Germany
| | - Jürgen Linders
- Department of Physical Chemistry, University of Duisburg-Essen, Essen, Germany.,Center for Nanointegration Duisburg-Essen (CeNIDE), University of Duisburg-Essen, Duisburg, Germany
| | - Katja Bettina Ferenz
- Center for Nanointegration Duisburg-Essen (CeNIDE), University of Duisburg-Essen, Duisburg, Germany.,Institute of Physiology, University of Duisburg-Essen, University Hospital Essen, Essen, Germany
| | - Michael Kirsch
- Institute of Physiological Chemistry, University of Duisburg-Essen, University Hospital Essen, Essen, Germany
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12
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Smolin D, Tötsch N, Grad JN, Linders J, Kaschani F, Kaiser M, Kirsch M, Hoffmann D, Schrader T. Accelerated trypsin autolysis by affinity polymer templates. RSC Adv 2020; 10:28711-28719. [PMID: 35520047 PMCID: PMC9055874 DOI: 10.1039/d0ra05827k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Accepted: 07/20/2020] [Indexed: 11/21/2022] Open
Abstract
Affinity copolymers specifically recognize the trypsin surface and act as templates for multiple protease molecules, leading to drastically accelerated autolysis – an unusual way for highly efficient enzyme inhibition at physiological conditions.
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Affiliation(s)
- Daniel Smolin
- Faculty of Chemistry
- University of Duisburg-Essen
- 45117 Essen
- Germany
| | - Niklas Tötsch
- Faculty of Biology
- University of Duisburg-Essen
- 45117 Essen
- Germany
| | - Jean-Noël Grad
- Faculty of Biology
- University of Duisburg-Essen
- 45117 Essen
- Germany
| | - Jürgen Linders
- Faculty of Chemistry
- University of Duisburg-Essen
- 45117 Essen
- Germany
| | | | - Markus Kaiser
- Faculty of Biology
- University of Duisburg-Essen
- 45117 Essen
- Germany
| | | | - Daniel Hoffmann
- Faculty of Biology
- University of Duisburg-Essen
- 45117 Essen
- Germany
| | - Thomas Schrader
- Faculty of Chemistry
- University of Duisburg-Essen
- 45117 Essen
- Germany
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13
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Philippar U, Lu T, Vloemans N, Bekkers M, van Nuffel L, Gaudiano M, Wnuk-Lipinska K, Van Der Leede B, Amssoms K, Kimpe K, Medaer B, Greway T, Abraham Y, Cummings M, Trella E, Vanhoof G, Sun W, Thuring J, Connolly P, Linders J, Gerecitano J, Goldberg J, Edwards J, Elsayed Y, Smit J, Bussolari J, Attar R. DISCOVERY OF A NOVEL, POTENTIAL FIRST-IN-CLASS MALT1 PROTEASE INHIBITOR FOR THE TREATMENT OF B CELL LYMPHOMAS. Hematol Oncol 2019. [DOI: 10.1002/hon.88_2629] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- U. Philippar
- Oncology Discovery; Janssen Research & Development; Beerse Belgium
| | - T. Lu
- Discovery Chemistry; Janssen R&D; Springhouse United States
| | - N. Vloemans
- Oncology Discovery; Janssen Research & Development; Beerse Belgium
| | - M. Bekkers
- Oncology Discovery; Janssen Research & Development; Beerse Belgium
| | - L. van Nuffel
- Oncology Discovery; Janssen Research & Development; Beerse Belgium
| | - M. Gaudiano
- Oncology Discovery; Janssen Research & Development; Beerse Belgium
| | - K. Wnuk-Lipinska
- Oncology Discovery; Janssen Research & Development; Beerse Belgium
| | | | | | - K. Kimpe
- Pharmaceutical Sciences; Janssen R&D; Beerse Belgium
| | - B. Medaer
- Portfolio Management; Janssen R&D; Beerse Belgium
| | - T. Greway
- DMPK; Janssen R&D; Raritan United States
| | - Y. Abraham
- Computational Biology; Janssen R&D; Beerse Belgium
| | - M. Cummings
- Computational Chemistry; Janssen R&D; Springhouse United States
| | - E. Trella
- Molecular and Cellular Pharmacology; Janssen R&D; Beerse Belgium
| | - G. Vanhoof
- Molecular and Cellular Pharmacology; Janssen R&D; Beerse Belgium
| | - W. Sun
- Molecular and Cellular Pharmacology; Janssen R&D; Springhouse United States
| | - J. Thuring
- Discovery Chemistry; Janssen R&D; Beerse Belgium
| | - P. Connolly
- Discovery Chemistry; Janssen R&D; Springhouse United States
| | - J. Linders
- Project Management; Janssen R&D; Beerse Belgium
| | - J. Gerecitano
- Experimental Medicine; Janssen R&D; Raritan United States
| | - J. Goldberg
- Experimental Medicine; Janssen R&D; Raritan United States
| | - J.P. Edwards
- Discovery Chemistry; Janssen R&D; Springhouse United States
| | - Y. Elsayed
- Oncology Heme DAS; Janssen R&D; Springhouse United States
| | - J. Smit
- CDTL Oncology; Janssen R&D; Springhouse United States
| | - J. Bussolari
- CDTL Oncology; Janssen R&D; Springhouse United States
| | - R. Attar
- Oncology Heme DAS; Janssen R&D; Springhouse United States
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14
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Chang E, Linders J. A Distributed Medical Data Base. Methods Inf Med 2018. [DOI: 10.1055/s-0038-1636152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
This paper describes the design and implementation of a distributed medical data base. Basic to this concept is a network of minicomputers, each of which possesses files which can be accessed throughout, the network by a protocol involving the NAMEs of the data fields. Physical and logical descriptor maps for the files provide mechanisms for protecting privileged information as well as tailoring the appearance of the data to suit the needs of jDarticular users.
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15
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Wrobeln A, Laudien J, Groß-Heitfeld C, Linders J, Mayer C, Wilde B, Knoll T, Naglav D, Kirsch M, Ferenz KB. Albumin-derived perfluorocarbon-based artificial oxygen carriers: A physico-chemical characterization and first in vivo evaluation of biocompatibility. Eur J Pharm Biopharm 2017; 115:52-64. [DOI: 10.1016/j.ejpb.2017.02.015] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Revised: 02/16/2017] [Accepted: 02/17/2017] [Indexed: 01/28/2023]
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16
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Wrobeln A, Schlüter KD, Linders J, Zähres M, Mayer C, Kirsch M, Ferenz KB. Functionality of albumin-derived perfluorocarbon-based artificial oxygen carriers in the Langendorff-heart. Artificial Cells, Nanomedicine, and Biotechnology 2017; 45:723-730. [DOI: 10.1080/21691401.2017.1284858] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Anna Wrobeln
- Institute for Physiological Chemistry, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | | | - Jürgen Linders
- Institute for Physical Chemistry, University of Duisburg-Essen, CeNIDE, Essen, Germany
| | - Manfred Zähres
- Institute for Physical Chemistry, University of Duisburg-Essen, CeNIDE, Essen, Germany
| | - Christian Mayer
- Institute for Physical Chemistry, University of Duisburg-Essen, CeNIDE, Essen, Germany
| | - Michael Kirsch
- Institute for Physiological Chemistry, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Katja B. Ferenz
- Institute for Physiological Chemistry, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
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17
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Molnar D, Linders J, Mayer C, Schubert R. Insertion stability of poly(ethylene glycol)-cholesteryl-based lipid anchors in liposome membranes. Eur J Pharm Biopharm 2016; 103:51-61. [DOI: 10.1016/j.ejpb.2016.03.023] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Revised: 03/15/2016] [Accepted: 03/21/2016] [Indexed: 10/22/2022]
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18
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Gräbner D, Hoffmann H, Förster S, Rosenfeldt S, Linders J, Mayer C, Talmon Y, Schmidt J. Hydrogels from phospholipid vesicles. Adv Colloid Interface Sci 2014; 208:252-63. [PMID: 24690546 DOI: 10.1016/j.cis.2014.02.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2013] [Revised: 02/11/2014] [Accepted: 02/13/2014] [Indexed: 10/25/2022]
Abstract
It is shown that phospholipid dispersions with a few percent of diacylphosphocholine PC in water can be swollen to single-phase lyotropic liquid crystalline Lα-phases by the addition of co-solvents like glycerol, 1,3-butyleneglycol BG or 1,2-propyleneglycol PG. The birefringent Lα-phases contain small unilamellar and multilamellar vesicles if the temperature of the samples is above the Krafft-Temperature Tm of the phospholipid. When such transparent birefringent viscous samples are cooled down below Tm the samples are transformed into birefringent gels. Cryo-TEM and FF-TEM measurements show that the bilayers of the vesicles are transformed from the liquid to the crystalline state during the transformation while the vesicle structure remains. The bilayers of the crystalline vesicles form adhesive contacts in the gel. Pulsed-field gradient NMR measurements show that two different kinds of water or co-solvent can be distinguished in the gels. One type of solvent molecules can diffuse like normal solvent in a continuous bulk phase. A second type of water diffuses much more slowly. This type of solvent is obviously trapped in the vesicles. The permeability of the crystalline vesicles for water and solvent molecules is much lower in the crystalline state than in the fluid state. Maximum swelling of the diacylphosphocholin dispersions occurs when the refractive index of the solvent is matched to the refractive index of the bilayers. The attraction between the bilayers is at a minimum in this state and the liquid crystalline Lα-phase's undulation forces between the bilayers push the bilayers apart. On transformation to the gel state the crystalline bilayers assume a high elastic bending rigidity. Undulations of the bilayers are now suppressed, and the bilayers can form adhesive contacts. Oscillating rheological measurements show that the gels with only 1% of phospholipids can have a storage modulus of 1000Pa. The gels are very brittle. They break when they are deformed by a few percent.
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19
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Gross-Heitfeld C, Linders J, Appel R, Selbach F, Mayer C. Polyalkylcyanoacrylate Nanocapsules: Variation of Membrane Permeability by Chemical Cross-Linking. J Phys Chem B 2014; 118:4932-9. [DOI: 10.1021/jp5003098] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Christoph Gross-Heitfeld
- Department of Chemistry, CeNIDE, University of Duisburg-Essen, Universitätsstraße 2, 45141 Essen, Germany
| | - Jürgen Linders
- Department of Chemistry, CeNIDE, University of Duisburg-Essen, Universitätsstraße 2, 45141 Essen, Germany
| | - Ralph Appel
- Department of Chemistry, CeNIDE, University of Duisburg-Essen, Universitätsstraße 2, 45141 Essen, Germany
| | - Florian Selbach
- Department of Chemistry, CeNIDE, University of Duisburg-Essen, Universitätsstraße 2, 45141 Essen, Germany
| | - Christian Mayer
- Department of Chemistry, CeNIDE, University of Duisburg-Essen, Universitätsstraße 2, 45141 Essen, Germany
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Affiliation(s)
- Jürgen Linders
- University Duisburg-Essen, CeNIDE, Universitätsstrasse 2, 45141, Germany
| | - Christian Mayer
- University Duisburg-Essen, CeNIDE, Universitätsstrasse 2, 45141, Germany
| | - Tomoko Sekine
- Shiseido Research Center, 2-2-1 Hayabuchi, Tsuzuki-ku, Yokohama 224-8558,
Japan
| | - Heinz Hoffmann
- University of Bayreuth, BZKG/BayColl, Gottlieb-Keim-Strasse 60,
95448 Bayreuth, Germany
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21
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Casse O, Shkilnyy A, Linders J, Mayer C, Häussinger D, Völkel A, Thünemann AF, Dimova R, Cölfen H, Meier W, Schlaad H, Taubert A. Solution Behavior of Double-Hydrophilic Block Copolymers in Dilute Aqueous Solution. Macromolecules 2012. [DOI: 10.1021/ma300621g] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Olivier Casse
- Department of Chemistry, University of Basel, Klingelbergstrasse 80, CH-4056
Basel, Switzerland
| | - Andriy Shkilnyy
- Department
of Colloid Chemistry, Max Planck Institute of Colloids and Interfaces, Research
Campus Golm, D-14424 Potsdam, Germany
- Institute of Chemistry, University of Potsdam, Karl-Liebknecht-Straße
24-25, D-14476 Golm, Germany
| | - Jürgen Linders
- Institute of Physical Chemistry, University of Duisburg-Essen, CeNIDE, Universitätsstraße
2, D-45141 Essen, Germany
| | - Christian Mayer
- Institute of Physical Chemistry, University of Duisburg-Essen, CeNIDE, Universitätsstraße
2, D-45141 Essen, Germany
| | - Daniel Häussinger
- Department of Chemistry, University of Basel, Klingelbergstrasse 80, CH-4056
Basel, Switzerland
| | - Antje Völkel
- Department
of Colloid Chemistry, Max Planck Institute of Colloids and Interfaces, Research
Campus Golm, D-14424 Potsdam, Germany
| | - Andreas F. Thünemann
- BAM Federal Institute for Materials Research and Testing, Unter den Eichen
87, D-12205 Berlin, Germany
| | - Rumiana Dimova
- Department
of Theory and Biosystems, Max Planck Institute of Colloids and Interfaces, Research
Campus Golm, D-14424 Potsdam, Germany
| | - Helmut Cölfen
- Department
of Colloid Chemistry, Max Planck Institute of Colloids and Interfaces, Research
Campus Golm, D-14424 Potsdam, Germany
- Physical Chemistry, University of Konstanz, Universitätsstraße
10, D-78457 Konstanz, Germany
| | - Wolfgang Meier
- Department of Chemistry, University of Basel, Klingelbergstrasse 80, CH-4056
Basel, Switzerland
| | - Helmut Schlaad
- Department
of Colloid Chemistry, Max Planck Institute of Colloids and Interfaces, Research
Campus Golm, D-14424 Potsdam, Germany
| | - Andreas Taubert
- Department
of Colloid Chemistry, Max Planck Institute of Colloids and Interfaces, Research
Campus Golm, D-14424 Potsdam, Germany
- Institute of Chemistry, University of Potsdam, Karl-Liebknecht-Straße
24-25, D-14476 Golm, Germany
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22
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Rodler F, Linders J, Fenske T, Rehm T, Mayer C, Schmuck C. pH-schaltbare Vesikel aus einem von Serin abgeleiteten Guanidiniocarbonylpyrrol-Carboxylat-Zwitterion in DMSO. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201003405] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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23
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Rodler F, Linders J, Fenske T, Rehm T, Mayer C, Schmuck C. pH-Switchable Vesicles from a Serine-Derived Guanidiniocarbonyl Pyrrole Carboxylate Zwitterion in DMSO. Angew Chem Int Ed Engl 2010; 49:8747-50. [DOI: 10.1002/anie.201003405] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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24
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Alexander V, Linders J, Lippold HJ, Niedrig H, Sebald T. A penning type ion source with high efficiency and some applications. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/00337578208237501] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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25
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Linders J, Mensink H, Stephenson G, Wauchope D, Racke K. Foliar Interception and Retention Values after Pesticide Application. A Proposal for Standardized Values for Environmental Risk Assessment (Technical Report). PURE APPL CHEM 2000. [DOI: 10.1351/pac200072112199] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In performing risk assessments for plant protection products by applicants or regulators in relation to the registration of the products, an important aspect to take into account is the foliar interception and retention of the active substance of the product on the plant. An overview is given of the approaches to this item in several parts of the world. The relevant circumstances and influencing variables, such as growth phase, planting density, and some physicochemical characteristics (e.g., vapor pressure and Henry's coefficient) are dealt with. Finally, a proposal is presented for how to take into account the phenomenon of foliar interception and retention in the initial phase, first tier, of the risk assessment process.
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Affiliation(s)
- J. Linders
- 1RIVM-CSR, P.O. Box 1, NL-3720 BA Bilthoven, The Netherlands
| | - H. Mensink
- 1RIVM-CSR, P.O. Box 1, NL-3720 BA Bilthoven, The Netherlands
| | | | - D. Wauchope
- 3USDA-Agricultural Research Service, P.O. Box 748, Tifton, GA 31794, USA
| | - K. Racke
- 4Dow Agrosciences, 9330 Zionsville Road, Indianapolis, IN 46268, USA
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27
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Chang E, Linders J. A distributed medical data base. Methods Inf Med 1974; 13:221-5. [PMID: 4437397] [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: 01/10/2023]
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