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Fischer K, Abdul Latif A, Griebel J, Prager A, Shayestehpour O, Zahn S, Schulze A. Immobilization of Bi 2WO 6 on Polymer Membranes for Photocatalytic Removal of Micropollutants from Water - A Stable and Visible Light Active Alternative. Glob Chall 2024; 8:2300198. [PMID: 38486926 PMCID: PMC10935888 DOI: 10.1002/gch2.202300198] [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] [Figures] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 01/26/2024] [Indexed: 03/17/2024]
Abstract
In this work, bismuth tungstate Bi2WO6 is immobilized on polymer membranes to photocatalytically remove micropollutants from water as an alternative to titanium dioxide TiO2. A synthesis method for Bi2WO6 preparation and its immobilization on a polymer membrane is developed. Bi2WO6 is characterized using X-ray diffraction and UV-vis reflectance spectroscopy, while the membrane undergoes analysis through scanning electron microscopy, X-ray photoelectron spectroscopy, and degradation experiments. The density of states calculations for TiO2 and Bi2WO6, along with PVDF reactions with potential reactive species, are investigated by density functional theory. The generation of hydroxyl radicals OH• is investigated via the reaction of coumarin to umbelliferone via fluorescence probe detection and electron paramagnetic resonance. Increasing reactant concentration enhances Bi2WO6 crystallinity. Under UV light at pH 7 and 11, the Bi2WO6 membrane completely degrades propranolol in 3 and 1 h, respectively, remaining stable and reusable for over 10 cycles (30 h). Active under visible light with a bandgap of 2.91 eV, the Bi2WO6 membrane demonstrates superior stability compared to a TiO2 membrane during a 7-day exposure to UV light as Bi2WO6 does not generate OH• radicals. The Bi2WO6 membrane is an alternative for water pollutant degradation due to its visible light activity and long-term stability.
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Affiliation(s)
- Kristina Fischer
- Leibniz Institute of Surface Engineering (IOM)Permoserstr. 1504318LeipzigGermany
| | - Amira Abdul Latif
- Leibniz Institute of Surface Engineering (IOM)Permoserstr. 1504318LeipzigGermany
| | - Jan Griebel
- Leibniz Institute of Surface Engineering (IOM)Permoserstr. 1504318LeipzigGermany
| | - Andrea Prager
- Leibniz Institute of Surface Engineering (IOM)Permoserstr. 1504318LeipzigGermany
| | - Omid Shayestehpour
- Leibniz Institute of Surface Engineering (IOM)Permoserstr. 1504318LeipzigGermany
| | - Stefan Zahn
- Leibniz Institute of Surface Engineering (IOM)Permoserstr. 1504318LeipzigGermany
| | - Agnes Schulze
- Leibniz Institute of Surface Engineering (IOM)Permoserstr. 1504318LeipzigGermany
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Yang F, Urban RD, Lorenz J, Griebel J, Koohbor N, Rohdenburg M, Knorke H, Fuhrmann D, Charvat A, Abel B, Azov VA, Warneke J. Control of Intermediates and Products by Combining Droplet Reactions and Ion Soft-Landing. Angew Chem Int Ed Engl 2024; 63:e202314784. [PMID: 37917653 DOI: 10.1002/anie.202314784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 11/01/2023] [Accepted: 11/02/2023] [Indexed: 11/04/2023]
Abstract
Despite being recognized primarily as an analytical technique, mass spectrometry also has a large potential as a synthetic tool, enabling access to advanced synthetic routes by reactions in charged microdroplets or ionic thin layers. Such reactions are special and proceed primarily at surfaces of droplets and thin layers. Partial solvation of the reactants is usually considered to play an important role for reducing the activation barrier, but many mechanistic details still need to be clarified. In our study, we showcase the synergy between two sequentially applied "preparative mass spectrometry" methods: initiating accelerated reactions within microdroplets during electrospray ionization to generate gaseous ionic intermediates in high abundance, which are subsequently mass-selected and soft-landed to react with a provided reagent on a substrate. This allows the generation of products at a nanomolar scale, amenable to further characterization. In this proof-of-concept study, the contrasting reaction pathways between intrinsically neutral and pre-charged reagents, respectively, both in microdroplets and in layers generated by ion soft-landing are investigated. This provides new insights into the role of partially solvated reagents at microdroplet surfaces for increased reaction rates. Additionally, further insights into reactions of ions of the same polarity under various conditions is obtained.
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Affiliation(s)
- Fangshun Yang
- Leibniz Institute of Surface Engineering (IOM), Permoserstrasse 15, 04318, Leipzig, Germany
| | - Raphael D Urban
- Leibniz Institute of Surface Engineering (IOM), Permoserstrasse 15, 04318, Leipzig, Germany
| | - Jonas Lorenz
- Leibniz Institute of Surface Engineering (IOM), Permoserstrasse 15, 04318, Leipzig, Germany
| | - Jan Griebel
- Leibniz Institute of Surface Engineering (IOM), Permoserstrasse 15, 04318, Leipzig, Germany
| | - Nima Koohbor
- Leibniz Institute of Surface Engineering (IOM), Permoserstrasse 15, 04318, Leipzig, Germany
| | - Markus Rohdenburg
- Wilhelm-Ostwald-Institute for Physical and Theoretical Chemistry, University Leipzig, Linnéstrasse 2, 04103, Leipzig, Germany
| | - Harald Knorke
- Wilhelm-Ostwald-Institute for Physical and Theoretical Chemistry, University Leipzig, Linnéstrasse 2, 04103, Leipzig, Germany
| | - Daniel Fuhrmann
- Institute for Inorganic Chemistry, University Leipzig, Johannisallee 29, 04103, Leipzig, Germany
| | - Ales Charvat
- Leibniz Institute of Surface Engineering (IOM), Permoserstrasse 15, 04318, Leipzig, Germany
- Institute of Chemical Technology, University Leipzig, 04103, Leipzig, Germany
| | - Bernd Abel
- Leibniz Institute of Surface Engineering (IOM), Permoserstrasse 15, 04318, Leipzig, Germany
- Institute of Chemical Technology, University Leipzig, 04103, Leipzig, Germany
| | - Vladimir A Azov
- Department of Chemistry, University of the Free State, 9300, Bloemfontein, South Africa
| | - Jonas Warneke
- Leibniz Institute of Surface Engineering (IOM), Permoserstrasse 15, 04318, Leipzig, Germany
- Wilhelm-Ostwald-Institute for Physical and Theoretical Chemistry, University Leipzig, Linnéstrasse 2, 04103, Leipzig, Germany
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Laube C, Temme R, Prager A, Griebel J, Knolle W, Abel B. Fluorescence Lifetime Control of Nitrogen Vacancy Centers in Nanodiamonds for Long-Term Information Storage. ACS Nano 2023; 17:15401-15410. [PMID: 37440601 DOI: 10.1021/acsnano.3c00328] [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: 07/15/2023]
Abstract
Today's huge amount of data generation and transfer induced an urgent requirement for long-term data storage. Here, we demonstrate and discuss a concept for long-term storage using NV centers inside nanodiamonds. The approach is based upon the radiation-induced generation of additional vacancies (so-called GR1 states), which quench the initial NV centers, resulting in a reduced overall fluorescence lifetime of the NV center. Using the tailored fluorescence lifetime of the NV center to code the information, we demonstrate a "beyond binary" data storage density per bit. We also demonstrate that this process is reversible by heating the sample or the spot of information. This proof of principle shows that our technique may be a promising alternative data storage technology, especially in terms of long-term storage, due to the high stability of the involved color centers. In addition to the proof-of-principle demonstration using macroscopic samples, we suggest and discuss the usage of focused electron beams to write information in nanodiamond materials, to read it out with focused low-intensity light, and to erase it on the macro-, micro-, or nanoscale.
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Affiliation(s)
- Christian Laube
- Leibniz-Institute of Surface Engineering (IOM), Permoserstraße 15, 04318 Leipzig, Germany
- Institute of Chemical Technology, University Leipzig, Linnéstrasse 3, 04103 Leipzig, Germany
| | - Robert Temme
- Leibniz-Institute of Surface Engineering (IOM), Permoserstraße 15, 04318 Leipzig, Germany
- Institute of Chemical Technology, University Leipzig, Linnéstrasse 3, 04103 Leipzig, Germany
| | - Andrea Prager
- Leibniz-Institute of Surface Engineering (IOM), Permoserstraße 15, 04318 Leipzig, Germany
| | - Jan Griebel
- Leibniz-Institute of Surface Engineering (IOM), Permoserstraße 15, 04318 Leipzig, Germany
| | - Wolfgang Knolle
- Leibniz-Institute of Surface Engineering (IOM), Permoserstraße 15, 04318 Leipzig, Germany
| | - Bernd Abel
- Leibniz-Institute of Surface Engineering (IOM), Permoserstraße 15, 04318 Leipzig, Germany
- Institute of Chemical Technology, University Leipzig, Linnéstrasse 3, 04103 Leipzig, Germany
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Werner I, Griebel J, Masip-Sánchez A, López X, Załęski K, Kozłowski P, Kahnt A, Boerner M, Warneke Z, Warneke J, Monakhov KY. Hybrid Molecular Magnets with Lanthanide- and Countercation-Mediated Interfacial Electron Transfer between Phthalocyanine and Polyoxovanadate. Inorg Chem 2023; 62:3761-3775. [PMID: 36534941 DOI: 10.1021/acs.inorgchem.2c03599] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A series of {V12}-nuclearity polyoxovanadate cages covalently functionalized with one or sandwiched by two phthalocyaninato (Pc) lanthanide (Ln) moieties via V-O-Ln bonds were prepared and fully characterized for paramagnetic Ln = SmIII-ErIII and diamagnetic Ln = LuIII, including YIII. The LnPc-functionalized {V12O32} cages with fully oxidized vanadium centers in the ground state were isolated as (nBu4N)3[HV12O32Cl(LnPc)] and (nBu4N)2[HV12O32Cl(LnPc)2] compounds. As corroborated by a combined experimental (EPR, DC and AC SQUID, laser photolysis transient absorption spectroscopy, and electrochemistry) and computational (DFT, MD, and model Hamiltonian approach) methods, the compounds feature intra- and intermolecular electron transfer that is responsible for a partial reduction at V(3d) centers from VV to VIV in the solid state and at high sample concentrations. The effects are generally Ln dependent and are clearly demonstrated for the (nBu4N)3[HV12O32Cl(LnPc)] representative with Ln = LuIII or DyIII. Intramolecular charge transfer takes place for Ln = LuIII and occurs from a Pc ligand via the Ln center to the {V12O32} core of the same molecule, whereas for Ln = DyIII, only intermolecular charge transfer is allowed, which is realized from Pc in one molecule to the {V12O32} core of another molecule usually via the nBu4N+ countercation. For all Ln but DyIII, two of these phenomena may be present in different proportions. Besides, it is demonstrated that (nBu4N)3[HV12O32Cl(DyPc)] is a field-induced single molecule magnet with a maximal relaxation time of the order 10-3 s. The obtained results open up the way to further exploration and fine-tuning of these three modular molecular nanocomposites regarding tailoring and control of their Ln-dependent charge-separated states (induced by intramolecular transfer) and relaxation dynamics as well as of electron hopping between molecules. This should enable us to realize ultra-sensitive polyoxometalate powered quasi-superconductors, sensors, and data storage/processing materials for quantum technologies and neuromorphic computing.
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Affiliation(s)
- Irina Werner
- Leibniz Institute of Surface Engineering (IOM), Permoserstr. 15, Leipzig04318, Germany
| | - Jan Griebel
- Leibniz Institute of Surface Engineering (IOM), Permoserstr. 15, Leipzig04318, Germany
| | - Albert Masip-Sánchez
- Departament de Química Física i Inorgànica, Universitat Rovira i Virgili, Marcel·lí Domingo 1, Tarragona43007, Spain
| | - Xavier López
- Departament de Química Física i Inorgànica, Universitat Rovira i Virgili, Marcel·lí Domingo 1, Tarragona43007, Spain
| | - Karol Załęski
- NanoBioMedical Centre, Adam Mickiewicz University in Poznań, Poznań61-614, Poland
| | - Piotr Kozłowski
- Institute of Spintronics and Quantum Information, Faculty of Physics, Adam Mickiewicz University in Poznań, ul. Uniwersytetu Poznańskiego 2, Poznań61-614, Poland
| | - Axel Kahnt
- Leibniz Institute of Surface Engineering (IOM), Permoserstr. 15, Leipzig04318, Germany
| | - Martin Boerner
- Leibniz Institute of Surface Engineering (IOM), Permoserstr. 15, Leipzig04318, Germany.,Institute of Inorganic Chemistry, Leipzig University, Johannisallee 29, Leipzig04103, Germany
| | - Ziyan Warneke
- Leibniz Institute of Surface Engineering (IOM), Permoserstr. 15, Leipzig04318, Germany.,Wilhelm-Ostwald-Institute for Physical and Theoretical Chemistry, Leipzig University, Linnéstr. 2, Leipzig04103, Germany
| | - Jonas Warneke
- Leibniz Institute of Surface Engineering (IOM), Permoserstr. 15, Leipzig04318, Germany.,Wilhelm-Ostwald-Institute for Physical and Theoretical Chemistry, Leipzig University, Linnéstr. 2, Leipzig04103, Germany
| | - Kirill Yu Monakhov
- Leibniz Institute of Surface Engineering (IOM), Permoserstr. 15, Leipzig04318, Germany
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Wilharm N, Bertmer M, Knolle W, Griebel J, Elsner C, Mayr SG. Biomimetic crosslinking of collagen gels by energetic electrons: The role of L-lysine. Acta Biomater 2022; 140:219-232. [PMID: 34551331 DOI: 10.1016/j.actbio.2021.09.025] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 09/13/2021] [Accepted: 09/14/2021] [Indexed: 11/19/2022]
Abstract
Energetic electrons have recently evolved as a powerful tool for crosslinking bio-derived hydrogels without the need for adding potentially hazardous reagents. Application of this approach allows for synthesis of biomimetic collagen-derived networks of highly tunable properties and functionalization. Yet, the underlying reaction kinetics are still not sufficiently established at this point. While hydroxyl radicals are generated by energetic electron-induced hydrolysis of water and play a key role in introducing covalent bonds between network fibers, a detailed mechanistic understanding would significantly increase applicability. We present a comprehensive analysis of central aspects of the reactivity between the hydroxyl radical (•OH) and collagen, elastin, glycine (Gly) and l-lysine (Lys). Pulse radiolysis (PR), solid state nuclear magnetic resonance (NMR), ultraviolet-visible absorption spectroscopy (UV/VIS) and electron spray ionization mass spectrometry (ESI-MS) shine light on distinct features of the crosslinking process. These highlight retained protein backbone integrity in collagen and elastin whilst Lys's ability to form several imine bonded Lys-Lys-species suggests striking similarities to crosslinking via lysyl oxidase catalysis in vivo. Thus, energetic electron based crosslinking opens the venue for customized hybrid gels of outstanding biomimicry and -compatibility. STATEMENT OF SIGNIFICANCE: Energetic electron beam treatment constitutes a highly attractive approach to establish chemical bonds between (bio) molecules. Although a convincing number of publications showed the versatility regarding crosslinking of bioderived hydrogels, insights into the underlying chemistry are still unestablished at this point. The present work unravels the mechanistics of energetic electron induced processes in collagen and elastin hydrogels as well as several abundant amino acids in aqueous solution. As key finding we demonstrate, that i) the connection between polymer chains is dominated by amino acid side chain interaction and ii) two single l-lysine molecules form an imine bond between the terminal amino group of one molecule and the delta carbon of the second molecule. We also consider the formation of H-bonds as a second crosslinking pathway. These findings open up for advanced, optionally spatially resolved biomaterials design.
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Affiliation(s)
- Nils Wilharm
- Leibniz-Institut für Oberflächenmodifizierung e.V. (IOM), Permoserstr. 15, 04318 Leipzig, Germany; Division of Surface Physics, Department of Physics and Earth Sciences, University of Leipzig, Linnéstraße 5, 04103 Leipzig, Germany.
| | - Marko Bertmer
- Leipzig University, Felix-Bloch-Institute for Solid State Physics, Linnéstraße 5, 04103, Leipzig, Germany
| | - Wolfgang Knolle
- Leibniz-Institut für Oberflächenmodifizierung e.V. (IOM), Permoserstr. 15, 04318 Leipzig, Germany
| | - Jan Griebel
- Leibniz-Institut für Oberflächenmodifizierung e.V. (IOM), Permoserstr. 15, 04318 Leipzig, Germany
| | - Christian Elsner
- Leibniz-Institut für Oberflächenmodifizierung e.V. (IOM), Permoserstr. 15, 04318 Leipzig, Germany
| | - Stefan G Mayr
- Leibniz-Institut für Oberflächenmodifizierung e.V. (IOM), Permoserstr. 15, 04318 Leipzig, Germany; Division of Surface Physics, Department of Physics and Earth Sciences, University of Leipzig, Linnéstraße 5, 04103 Leipzig, Germany.
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Krömmelbein C, Mütze M, Konieczny R, Schönherr N, Griebel J, Gerdes W, Mayr SG, Riedel S. Impact of high-energy electron irradiation on mechanical, structural and chemical properties of agarose hydrogels. Carbohydr Polym 2021; 263:117970. [PMID: 33858571 DOI: 10.1016/j.carbpol.2021.117970] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [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: 01/14/2021] [Revised: 03/16/2021] [Accepted: 03/17/2021] [Indexed: 10/21/2022]
Abstract
Due to their excellent biocompatibility and biodegradability, natural hydrogels are highly demanded biomaterials for biomedical applications such as wound dressing, tissue engineering, drug delivery or three dimensional cell culture. Highly energetic electron irradiation up to 10 MeV is a powerful and fast tool to sterilize and tailor the material's properties. In this study, electron radiation treatment of agarose hydrogels was investigated to evaluate radiation effects on physical, structural and chemical properties. The viscoelastic behavior, surface hydrophilicity and swelling behavior in a range of typical sterilization doses of 0 kGy to 30 kGy was analyzed. The mechanical properties were determined by rheology measurements and decreased by more than 20% compared to the initial moduli. The number average molecular weight between crosslinks was estimated based on rubber elasticity theory to judge on the radiation degradation. In this dose range, the number average molecular weight between crosslinks increased by more than 6%. Chemical structure was investigated by FTIR spectroscopy to evaluate the radiation resistance of agarose hydrogels. With increasing electron dose, an increasing amount of carbonyl containing species was observed. In addition, irradiation was accompanied by formation of gas cavities in the hydrogels. The gas products were specified for CO2, CO and H2O. Based on the radiolytic products, a radiolysis mechanism was proposed. Electron beam treatment under high pressure conditions was found to reduce gas cavity formation in the hydrogels.
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Affiliation(s)
- Catharina Krömmelbein
- Leibniz Institute of Surface Engineering (IOM), Permoserstraße 15, 04318 Leipzig, Germany; Division of Surface Physics, Faculty of Physics and Earth Science, Leipzig University, Linnéstraße 5, 04103 Leipzig, Germany.
| | - Martin Mütze
- Leibniz Institute of Surface Engineering (IOM), Permoserstraße 15, 04318 Leipzig, Germany; Division of Surface Physics, Faculty of Physics and Earth Science, Leipzig University, Linnéstraße 5, 04103 Leipzig, Germany
| | - Robert Konieczny
- Leibniz Institute of Surface Engineering (IOM), Permoserstraße 15, 04318 Leipzig, Germany
| | - Nadja Schönherr
- Leibniz Institute of Surface Engineering (IOM), Permoserstraße 15, 04318 Leipzig, Germany
| | - Jan Griebel
- Leibniz Institute of Surface Engineering (IOM), Permoserstraße 15, 04318 Leipzig, Germany
| | | | - Stefan G Mayr
- Leibniz Institute of Surface Engineering (IOM), Permoserstraße 15, 04318 Leipzig, Germany; Division of Surface Physics, Faculty of Physics and Earth Science, Leipzig University, Linnéstraße 5, 04103 Leipzig, Germany.
| | - Stefanie Riedel
- Leibniz Institute of Surface Engineering (IOM), Permoserstraße 15, 04318 Leipzig, Germany; Division of Surface Physics, Faculty of Physics and Earth Science, Leipzig University, Linnéstraße 5, 04103 Leipzig, Germany; Cell.Copedia GmbH, Bosestraße 4, 04109 Leipzig, Germany.
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Hunger T, Nekolla E, Griebel J, Brix G. [Scientific assessment and regulatory approval of radiological screening examinations in Germany]. Radiologe 2021; 61:21-27. [PMID: 33044561 DOI: 10.1007/s00117-020-00758-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
BACKGROUND Radiologic imaging technologies like computed tomography (CT) have the potential to screen for various diseases. The potential benefits of screening are always associated with risks, particularly from the application of ionizing radiation. MATERIALS AND METHODS The International Basic Safety Standards as well as the Council Directive 2013/59/Euratom have set guidelines for the application of ionizing radiation in early detection which were transposed into the German Radiation Protection Law. Accordingly, the German Federal Ministry for the Environment, Nature Conservation and Nuclear Safety (BMU) approves screening examinations on a generic level, based on a scientific report provided by the German Federal Office for Radiation Protection (BfS), and defines in a federal statutory ordinance which type of screening is permissible for detecting a disease for a particular group of persons and under which conditions. RESULTS With exception of the mammography screening programme, no radiological examination for the early detection of disease has been approved in Germany to date. However, such screenings are currently being offered in Germany. The BfS is currently conducting a scientific evaluation for lung cancer screening with low-dose CT. CONCLUSIONS Screening examinations with radiological imaging can only be approved when studies with the highest level of evidence have demonstrated that the benefits outweigh the risks. To translate this favourable benefit-risk balance into general health care, strict requirements for the entire screening process including quality assurance must be defined.
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Affiliation(s)
- T Hunger
- Abteilung Medizinischer und beruflicher Strahlenschutz, Bundesamt für Strahlenschutz, Ingolstädter Landstr. 1, 85764, Neuherberg, Deutschland.
| | - E Nekolla
- Abteilung Medizinischer und beruflicher Strahlenschutz, Bundesamt für Strahlenschutz, Ingolstädter Landstr. 1, 85764, Neuherberg, Deutschland
| | - J Griebel
- Abteilung Medizinischer und beruflicher Strahlenschutz, Bundesamt für Strahlenschutz, Ingolstädter Landstr. 1, 85764, Neuherberg, Deutschland
| | - G Brix
- Abteilung Medizinischer und beruflicher Strahlenschutz, Bundesamt für Strahlenschutz, Ingolstädter Landstr. 1, 85764, Neuherberg, Deutschland
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Yang B, Zhang C, Cheng S, Li G, Griebel J, Neuhaus J. Novel Metabolic Signatures of Prostate Cancer Revealed by 1H-NMR Metabolomics of Urine. Diagnostics (Basel) 2021; 11:149. [PMID: 33498542 PMCID: PMC7909529 DOI: 10.3390/diagnostics11020149] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [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: 12/03/2020] [Revised: 01/13/2021] [Accepted: 01/16/2021] [Indexed: 12/16/2022] Open
Abstract
Prostate cancer (PC) is one of the most common male cancers worldwide. Until now, there is no consensus about using urinary metabolomic profiling as novel biomarkers to identify PC. In this study, urine samples from 50 PC patients and 50 non-cancerous individuals (control group) were collected. Based on 1H nuclear magnetic resonance (1H-NMR) analysis, 20 metabolites were identified. Subsequently, principal component analysis (PCA), partial least squares-differential analysis (PLS-DA) and ortho-PLS-DA (OPLS-DA) were applied to find metabolites to distinguish PC from the control group. Furthermore, Wilcoxon test was used to find significant differences between the two groups in metabolite urine levels. Guanidinoacetate, phenylacetylglycine, and glycine were significantly increased in PC, while L-lactate and L-alanine were significantly decreased. The receiver operating characteristics (ROC) analysis revealed that the combination of guanidinoacetate, phenylacetylglycine, and glycine was able to accurately differentiate 77% of the PC patients with sensitivity = 80% and a specificity = 64%. In addition, those three metabolites showed significant differences in patients stratified for Gleason score 6 and Gleason score ≥7, indicating potential use to detect significant prostate cancer. Pathway enrichment analysis using the KEGG (Kyoto Encyclopedia of Genes and Genomes) and the SMPDB (The Small Molecule Pathway Database) revealed potential involvement of KEGG "Glycine, Serine, and Threonine metabolism" in PC. The present study highlights that guanidinoacetate, phenylacetylglycine, and glycine are potential candidate biomarkers of PC. To the best knowledge of the authors, this is the first study identifying guanidinoacetate, and phenylacetylglycine as potential novel biomarkers in PC.
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Affiliation(s)
- Bo Yang
- Department of Urology, University of Leipzig, 04103 Leipzig, Germany; (B.Y.); (C.Z.)
- Department of Urology, Zhoupu Hospital, Shanghai University of Medicine & Health Sciences, Shanghai 201318, China
| | - Chuan Zhang
- Department of Urology, University of Leipzig, 04103 Leipzig, Germany; (B.Y.); (C.Z.)
| | - Sheng Cheng
- Department of Urology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou 310016, China;
| | - Gonghui Li
- Department of Urology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou 310016, China;
| | - Jan Griebel
- Leibniz Institute of Surface Engineering (IOM), Permoserstraße 15, 04318 Leipzig, Germany;
| | - Jochen Neuhaus
- Department of Urology, University of Leipzig, 04103 Leipzig, Germany; (B.Y.); (C.Z.)
- Department of Urology, Zhoupu Hospital, Shanghai University of Medicine & Health Sciences, Shanghai 201318, China
- Department of Urology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou 310016, China;
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Pütt R, Kozłowski P, Werner I, Griebel J, Schmitz S, Warneke J, Monakhov KY. {P 2V 3W 15}-Polyoxometalates Functionalized with Phthalocyaninato Y and Yb Moieties. Inorg Chem 2021; 60:80-86. [PMID: 33180468 DOI: 10.1021/acs.inorgchem.0c02257] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A tris(alkoxo)pyridine-augmented Wells-Dawson polyoxometalate (nBu4N)6[WD-Py] (WD = P2V3W15O59(OCH2)3C, Py = C5H4N) was functionalized with phthalocyaninato metal moieties (MPc where M = Y or Yb and Pc = C32H16N8) to afford (nBu4N)4[HWD-Py(MPc)] compounds. High-resolution mass spectrometry was used to detect and identify the hybrid assembly. The magnetism studies reveal substantial differences between M = Yb (monomeric, single-ion paramagnetism) and M = Y (containing dimers, radical character). The results of electronic paramagnetic resonance spectroscopy, SQUID magnetometry, and magnetochemical calculations indicate the presence of intramolecular charge transfer from the MPc moiety to the polyoxometalate and of intermolecular charge transfer from the MPc moiety of one molecule to the polyoxometalate unit of another molecule. These compounds with identified VIV ions represent unique examples of transition-metal/lanthanide complex-POM hybrid compounds with nonphotoinduced charge transfer between electron donor and acceptor centers.
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Affiliation(s)
- Ricarda Pütt
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Piotr Kozłowski
- Faculty of Physics, Adam Mickiewicz University in Poznań, ul. Uniwersytetu Poznańskiego 2, 61-614 Poznań, Poland
| | - Irina Werner
- Leibniz Institute of Surface Engineering (IOM), Permoserstraße 15, 04318 Leipzig, Germany
| | - Jan Griebel
- Leibniz Institute of Surface Engineering (IOM), Permoserstraße 15, 04318 Leipzig, Germany
| | - Sebastian Schmitz
- Leibniz Institute of Surface Engineering (IOM), Permoserstraße 15, 04318 Leipzig, Germany
| | - Jonas Warneke
- Leibniz Institute of Surface Engineering (IOM), Permoserstraße 15, 04318 Leipzig, Germany.,Wilhelm-Ostwald-Institute for Physical and Theoretical Chemistry, Leipzig University, Linnéstraße 2, 04103 Leipzig, Germany
| | - Kirill Yu Monakhov
- Leibniz Institute of Surface Engineering (IOM), Permoserstraße 15, 04318 Leipzig, Germany
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10
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Schmitz S, Qiu X, Glöß M, van Leusen J, Izarova NV, Nadeem MA, Griebel J, Chiechi RC, Kögerler P, Monakhov KY. Conductive Self-Assembled Monolayers of Paramagnetic {Co II Co 4 III } and { Co 4 II Co 2 III } Coordination Clusters on Gold Surfaces. Front Chem 2019; 7:681. [PMID: 31750287 PMCID: PMC6848059 DOI: 10.3389/fchem.2019.00681] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Accepted: 10/01/2019] [Indexed: 11/13/2022] Open
Abstract
Two polynuclear cobalt(II,III) complexes, [Co5(N3)4(N-n-bda)4(bza·SMe)2] (1) and [Co6(N3)4(N-n-bda)2(bza·SMe)5(MeOH)4]Cl (2), where Hbza·SMe = 4-(methylthio)benzoic acid and N-n-H2bda = N-n-butyldiethanolamine, were synthesized and fully characterized by various techniques. Compound 1 exhibits an unusual, approximately C2-symmetric {CoIICo4III} core of two isosceles Co3 triangles with perpendicularly oriented planes, sharing a central, high-spin CoII ion residing in a distorted tetrahedral coordination environment. This central CoII ion is connected to four outer, octahedrally coordinated low-spin CoIII ions via oxo bridges. Compound 2 comprises a semi-circular {Co4IICo2III} motif of four non-interacting high-spin CoII and two low-spin CoIII centers in octahedral coordination environments. Self-assembled monolayers (SAMs) of 1 and 2 were physisorbed on template-stripped gold surfaces contacted by an eutectic gallium-indium (EGaIn) tip. The acquired current density-voltage (I-V) data revealed that the cobalt-based SAMs are more electrically robust than those of the previously reported dinuclear {CuIILnIII} complexes with Ln = Gd, Tb, Dy, or Y (Schmitz et al., 2018a). In addition, between 170 and 220°C, the neutral, mixed-valence compound 1 undergoes a redox modification, yielding a {Co5}-based coordination cluster (1-A) with five non-interacting, high-spin octahedral CoII centers as indicated by SQUID magnetometry analysis in combination with X-ray photoelectron spectroscopy and infrared spectroscopy. Solvothermal treatment of 1 results in a high-nuclearity coordination cluster, [Co10(N3)2(N-n-bda)6(bza·SMe)6] (3), containing 10 virtually non-interacting high-spin CoII centers.
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Affiliation(s)
- Sebastian Schmitz
- Institut für Anorganische Chemie, RWTH Aachen University, Aachen, Germany.,Leibniz Institute of Surface Engineering (IOM), Leipzig, Germany
| | - Xinkai Qiu
- Stratingh Institute for Chemistry, Zernike Institute for Advanced Materials, University of Groningen, Groningen, Netherlands
| | - Maria Glöß
- Institut für Anorganische Chemie, RWTH Aachen University, Aachen, Germany.,Jülich-Aachen Research Alliance (JARA-FIT), Peter Grünberg Institute, Forschungszentrum Jülich GmbH, Jülich, Germany
| | - Jan van Leusen
- Institut für Anorganische Chemie, RWTH Aachen University, Aachen, Germany
| | - Natalya V Izarova
- Jülich-Aachen Research Alliance (JARA-FIT), Peter Grünberg Institute, Forschungszentrum Jülich GmbH, Jülich, Germany
| | | | - Jan Griebel
- Leibniz Institute of Surface Engineering (IOM), Leipzig, Germany
| | - Ryan C Chiechi
- Stratingh Institute for Chemistry, Zernike Institute for Advanced Materials, University of Groningen, Groningen, Netherlands
| | - Paul Kögerler
- Institut für Anorganische Chemie, RWTH Aachen University, Aachen, Germany.,Jülich-Aachen Research Alliance (JARA-FIT), Peter Grünberg Institute, Forschungszentrum Jülich GmbH, Jülich, Germany
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11
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Klose J, Severin T, Hahn P, Jeremies A, Bergmann J, Fuhrmann D, Griebel J, Abel B, Kersting B. Coordination chemistry and photoswitching of dinuclear macrocyclic cadmium-, nickel-, and zinc complexes containing azobenzene carboxylato co-ligands. Beilstein J Org Chem 2019; 15:840-851. [PMID: 31019576 PMCID: PMC6466696 DOI: 10.3762/bjoc.15.81] [Citation(s) in RCA: 4] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Accepted: 03/15/2019] [Indexed: 11/23/2022] Open
Abstract
The synthesis of mixed-ligand complexes of the type [M2L(μ-L')]+, where L represents a 24-membered macrocyclic hexaaza-dithiophenolate ligand, L' is an azobenzene carboxylate co-ligand, and M = Cd(II), Ni(II) or Zn(II), is reported. A series of new complexes were synthesized, namely [M2L(μ-L')]+ (L' = azo-H, M = Cd (1), Ni (2); L' = azo-OH, M = Zn (3), Ni (4); L' = azo-NMe2, M = Zn (5), Cd (6), Ni (7); L' = azo-CO2Me, M = Cd (8), Ni (9)), and characterized by elemental analysis, electrospray ionization mass spectrometry (ESIMS), IR, UV-vis and NMR spectroscopy (for diamagnetic Zn and Cd complexes) and X-ray single crystal structure analysis. The crystal structures of 3' and 5-8 display an isostructural series of compounds with bridging azobenzene carboxylates in the trans form. The paramagnetic Ni complexes 2, 4 and 7 reveal a weak ferromagnetic exchange interaction with magnetic exchange coupling constant values between 21 and 23 cm-1 (H = -2JS1S2). Irradiation of 1 with λ = 365 nm reveals a photoisomerization of the co-ligand from the trans to the cis form.
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Affiliation(s)
- Jennifer Klose
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, 04103 Leipzig, Germany, Fax: +49(0)341-97-36199
| | - Tobias Severin
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, 04103 Leipzig, Germany, Fax: +49(0)341-97-36199
| | - Peter Hahn
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, 04103 Leipzig, Germany, Fax: +49(0)341-97-36199
| | - Alexander Jeremies
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, 04103 Leipzig, Germany, Fax: +49(0)341-97-36199
| | - Jens Bergmann
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, 04103 Leipzig, Germany, Fax: +49(0)341-97-36199
| | - Daniel Fuhrmann
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, 04103 Leipzig, Germany, Fax: +49(0)341-97-36199
| | - Jan Griebel
- Leibniz-Institut für Oberflächenmodifizierung e. V., Abteilung Funktionale Oberflächen, D-04318 Leipzig, Germany
- Wilhelm-Ostwald-Institut für Physikalische und Theoretische Chemie, Universität Leipzig, Linnéstraße 2, D-04103 Leipzig, Germany
| | - Bernd Abel
- Leibniz-Institut für Oberflächenmodifizierung e. V., Abteilung Funktionale Oberflächen, D-04318 Leipzig, Germany
- Wilhelm-Ostwald-Institut für Physikalische und Theoretische Chemie, Universität Leipzig, Linnéstraße 2, D-04103 Leipzig, Germany
| | - Berthold Kersting
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, 04103 Leipzig, Germany, Fax: +49(0)341-97-36199
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12
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Berndt-Paetz M, Schulze P, Stenglein PC, Weimann A, Wang Q, Horn LC, Riyad YM, Griebel J, Hermann R, Glasow A, Stolzenburg JU, Neuhaus J. Reduction of Muscle-Invasive Tumors by Photodynamic Therapy with Tetrahydroporphyrin-Tetratosylat in an Orthotopic Rat Bladder Cancer Model. Mol Cancer Ther 2019; 18:743-750. [DOI: 10.1158/1535-7163.mct-18-1194] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Revised: 12/19/2018] [Accepted: 02/18/2019] [Indexed: 11/16/2022]
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13
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Laube C, Oeckinghaus T, Lehnert J, Griebel J, Knolle W, Denisenko A, Kahnt A, Meijer J, Wrachtrup J, Abel B. Controlling the fluorescence properties of nitrogen vacancy centers in nanodiamonds. Nanoscale 2019; 11:1770-1783. [PMID: 30629069 DOI: 10.1039/c8nr07828a] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Control over the formation and fluorescence properties of nitrogen vacancy (NV) centers in nanodiamonds (NDs) is an important factor for their use in medical and sensor applications. However, reports providing a deep understanding of the potential factors influencing these properties are rare and focus only on a few influencing factors. The current contribution targets this issue and we report a comprehensive study of the fluorescence properties of NVs in nanodiamonds as a function of electron irradiation fluence and surface termination. Here we show that process parameters such as defect center interactions, in particular, different nitrogen defects and radiation induced lattice defects, as well as surface functionalities have a strong influence on the fluorescence intensity, fluorescence lifetime and the charge state ratio of the NV centers. By employing a time-correlated single photon counting approach we also established a method for fast macroscopic monitoring of the fluorescence properties of ND samples. We found that the fluorescence properties of NV centers may be controlled or even tuned depending upon the radiation treatment, annealing, and surface termination.
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Affiliation(s)
- Christian Laube
- Leibniz-Institute of Surface Engineering (IOM), Permoserstr. 15, D-04318 Leipzig, Germany.
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14
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Glass S, Rüdiger T, Griebel J, Abel B, Schulze A. Uptake and release of photosensitizers in a hydrogel for applications in photodynamic therapy: the impact of structural parameters on intrapolymer transport dynamics. RSC Adv 2018; 8:41624-41632. [PMID: 35559284 PMCID: PMC9092030 DOI: 10.1039/c8ra08093c] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [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] [Received: 09/29/2018] [Accepted: 12/03/2018] [Indexed: 11/21/2022] Open
Abstract
In this study a hydrogel is presented that can be used as a carrier and release system for photosensitizers. Because of the high structural variety of photosensitizers, four different substances were analysed. Two porphyrins, 5,10,15,20-tetrakis(1-methyl-4-pyridinio)porphyrin tetra(p-toluene-sulfonate) and sodium meso-tetraphenylporphine-4,4',4'',4'''-tetrasulfonat, eosin y and methylene blue were selected. Uptake and release of these photosensitizers were studied. All photosensitizers were taken up by the hydrogel not depending significantly on the structure of the photosensitizer, and it was possible to load the hydrogels in the μmol g-1 range. Nevertheless, size and pK a value were shown to influence the release behaviour. Finally, the singlet oxygen generation of the photosensitizer after release was demonstrated. The photosensitizer was still highly active and produced a sufficient amount of singlet oxygen.
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Affiliation(s)
- Sarah Glass
- Leibniz Institute of Surface Engineering (IOM) Germany
| | - Tom Rüdiger
- Leibniz Institute of Surface Engineering (IOM) Germany
| | - Jan Griebel
- Leibniz Institute of Surface Engineering (IOM) Germany
| | - Bernd Abel
- Leibniz Institute of Surface Engineering (IOM) Germany
| | - Agnes Schulze
- Leibniz Institute of Surface Engineering (IOM) Germany
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15
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Abstract
BACKGROUND In Germany, approximately 95% of man-made radiation exposure of the population results from diagnostic and interventional X‑ray procedures. Thus, radiation protection of patients in this field of application is of great importance. OBJECTIVE Quantification and evaluation of current data on the frequency and doses of X‑ray procedures as well as temporal trends for the years 2007-2014. MATERIAL AND METHODS For outpatients the frequency of X‑ray procedures was estimated using reimbursement data from health insurances and for inpatients by means of hospital statistics. For the years under review, representative values for the effective dose per X‑ray application were determined mainly from data reported by X‑ray departments to the competent authorities. RESULTS In 2014 approximately 140 million X‑ray procedures were performed in Germany with some 40% from dental examinations. On average 1.7 procedures per inhabitant and year were almost constantly carried out between 2007 and 2014. Besides dental diagnostics, X‑ray examinations of the skeleton and thorax were performed most frequently. The number of computed tomography (CT) examinations increased by approximately 40%. The increase in magnetic resonance imaging (MRI) was even more pronounced with approximately 55% but overall CT examinations were still performed more often than MRI. The doses per X‑ray procedure were only slightly reduced, despite the various dose reduction approaches established in recent years; therefore, the mean effective dose per inhabitant increased from approximately 1.4 mSv in 2007 to 1.6 mSv in 2014, mainly due to the increasing frequency of CT examinations. CONCLUSION The principles of justification and optimization of radiological procedures are to be consistently applied in each individual instance, especially in the case of CT examinations.
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Affiliation(s)
- E A Nekolla
- BfS - Bundesamt für Strahlenschutz, Abteilung Medizinischer und Beruflicher Strahlenschutz, Ingolstädter Landstr. 1, 85764, Neuherberg, Deutschland.
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16
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Elsner C, Lohan M, Griebel J, Decker U. Photo-stimulated leaving group isomerization of acyl donor esters in protease-catalyzed hydrolysis reactions. BIOCATAL BIOTRANSFOR 2018. [DOI: 10.1080/10242422.2018.1427739] [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: 10/18/2022]
Affiliation(s)
| | - Marcus Lohan
- Leibniz Institute of Surface Engineering, Leipzig, Germany
| | - Jan Griebel
- Leibniz Institute of Surface Engineering, Leipzig, Germany
| | - Ulrich Decker
- Leibniz Institute of Surface Engineering, Leipzig, Germany
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17
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Abstract
Summary
Aim: To estimate and evaluate the risks for the offspring due to the administration of radiopharmaceuticals to women during the first pregnancy weeks after conception (weeks p.c.). Methods: The in-utero exposition of the embryo due to diagnostic nuclear medicine procedures, for which diagnostic reference levels (DRL) are specified, as well as due to radio iodine therapy (RIT) was determined. To this end, it is assumed that the activity of the diagnostic radiopharmaceuticals administered to the mother corresponds with the DRL and amounts to 600 MBq or 4 GBq 131I for RIT of benign or malignant thyroid disease, respectively. Based on these data, the radiation risk for the offspring was assessed and compared with the spontaneous risks (R0). Results: The dose for the offspring does not exceed 7.8 mSv for the diagnostic procedures considered, resulting in an excess risk for the offspring of less than 0.12% (R0 ~ 25%) to die from cancer during life, of less than 0.07% (R0 ~ 0.2%) to develop cancer up to the age of 15 years, and of less than 0.16% (R0 ~ 2%) for hereditary effects. RIT during the first 8 weeks p.c. results in doses for the offspring of about 100–460 mSv, resulting in an excess risk for malformations of the child of 3.4%–22% (R0 ~6%). Conclusions: The risk of stochastic radiation effects for the offspring due to a diagnostic nuclear medicine procedure of the mother during the first 8 weeks p.c. is – compared with the spontaneous risks – very small; deterministic effects are unlikely. In contrast, deterministic effects for the offspring may occur following RIT. In order to decide on a possibly indicated abortion after RIT, an individual risk assessment is mandatory.
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18
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Behrens M, Lotnyk A, Roß U, Griebel J, Schumacher P, Gerlach JW, Rauschenbach B. Impact of disorder on optical reflectivity contrast of epitaxial Ge2Sb2Te5 thin films. CrystEngComm 2018. [DOI: 10.1039/c8ce00534f] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Classification of the optical reflectivity contrasts of single-phase, epitaxial Ge2Sb2Te5 thin films with respect to the vacancy arrangements.
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Affiliation(s)
- Mario Behrens
- Leibniz Institute of Surface Engineering (IOM)
- 04318 Leipzig
- Germany
| | - Andriy Lotnyk
- Leibniz Institute of Surface Engineering (IOM)
- 04318 Leipzig
- Germany
| | - Ulrich Roß
- Leibniz Institute of Surface Engineering (IOM)
- 04318 Leipzig
- Germany
| | - Jan Griebel
- Leibniz Institute of Surface Engineering (IOM)
- 04318 Leipzig
- Germany
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19
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Berndt-Paetz M, Weimann A, Sieger N, Schastak S, Riyad YM, Griebel J, Arthanareeswaran VKA, Stolzenburg JU, Neuhaus J. Tetrahydroporphyrin-tetratosylat (THPTS): A near-infrared photosensitizer for targeted and efficient photodynamic therapy (PDT) of human bladder carcinoma. An in vitro study. Photodiagnosis Photodyn Ther 2017; 18:244-251. [PMID: 28279796 DOI: 10.1016/j.pdpdt.2017.02.017] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Revised: 02/02/2017] [Accepted: 02/08/2017] [Indexed: 12/11/2022]
Abstract
BACKGROUND Efficacy of PDT in muscle-invasive bladder cancer is hampered by low tissue penetration of most photosensitizers by short excitation wavelength. THPTS is excitable at near-infrared (760nm) allowing tissue penetration up to 15mm. We examined the cellular effects of THPTS-PDT in human bladder cancer cells. MATERIAL AND METHODS We used four human transitional carcinoma cell lines, epithelial bladder progenitors (HBLAK) and bladder smooth muscle cells (HBSMC). We used flow cytometry to examine pharmacokinetics of THPTS, confocal laser scanning microscopy to analyze subcellular localization and production of reactive oxidative species (ROS), examined cytotoxicity and cell death pathways (qRT-PCR). RESULTS Total uptake varied between cell lines and was significantly high in HBLAK and HBSMC. Lysosomal localization was mainly seen in cancer cells and HBLAK, while THPTS was distributed throughout the cytoplasm in HBSMC. Significant ROS production was detected 30min after THPTS-PDT. Growth arrest occurred within 4h and resulted in apoptotic and necrotic cytotoxicity after 24h. Cytotoxicity was dose-dependent and specifically high in cancer cells and HBLAK and significantly low in HBSMC. CONCLUSION THPTS-PDT induces cellular mechanisms leading to cellular growth arrest, apoptosis and necrosis in human bladder cancer cells. These effects are only partly dependent on the total amount of THPTS uptake and rather dependent on its subcellular compartmentalization. HBSMC are hardly affected by THPTS-PDT confirming tumor specificity and safety. THPTS is a promising new photosensitizer with the unique advantage of deep tissue penetration allowing the treatment of solid tumors and warranting further animal studies.
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Affiliation(s)
- Mandy Berndt-Paetz
- Department of Urology, Research Laboratories, University of Leipzig, Leipzig, Germany.
| | - Annett Weimann
- Department of Urology, Research Laboratories, University of Leipzig, Leipzig, Germany.
| | - Nadine Sieger
- Department of Urology, University Hospital Leipzig, Leipzig, Germany.
| | | | - Yasser M Riyad
- Leibniz Institute of Surface Modification (IOM), Leipzig, Germany; Department of Chemistry, Faculty of Science, Al-Azhar University, Nasr City, 11884, Cairo, Egypt.
| | - Jan Griebel
- Leibniz Institute of Surface Modification (IOM), Leipzig, Germany.
| | | | | | - Jochen Neuhaus
- Department of Urology, Research Laboratories, University of Leipzig, Leipzig, Germany.
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20
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Griebel J, Gießler S, Yin M, Wolinska J. Parental and hybrid Daphnia
from the D. longispina
complex: long-term dynamics in genetic structure and significance of overwintering modes. J Evol Biol 2016; 29:810-23. [DOI: 10.1111/jeb.12828] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2015] [Revised: 12/18/2015] [Accepted: 01/10/2016] [Indexed: 12/22/2022]
Affiliation(s)
- J. Griebel
- Department of Ecosystem Research; Leibniz-Institute of Freshwater Ecology and Inland Fisheries; Berlin Germany
- Department of Biology II; Ludwig Maximilian University Munich; Munich Germany
| | - S. Gießler
- Department of Biology II; Ludwig Maximilian University Munich; Munich Germany
| | - M. Yin
- MOE Key Laboratory of Biodiversity Science and Ecological Engineering; School of Life Science; Fudan University; Shanghai China
| | - J. Wolinska
- Department of Ecosystem Research; Leibniz-Institute of Freshwater Ecology and Inland Fisheries; Berlin Germany
- Department of Biology, Chemistry and Pharmacy; Institute of Biology; Freie Universität Berlin; Berlin Germany
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21
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Riyad YM, Naumov S, Schastak S, Griebel J, Kahnt A, Häupl T, Neuhaus J, Abel B, Hermann R. Chemical Modification of a Tetrapyrrole-Type Photosensitizer: Tuning Application and Photochemical Action beyond the Singlet Oxygen Channel. J Phys Chem B 2014; 118:11646-58. [DOI: 10.1021/jp507270k] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Yasser M. Riyad
- Wilhelm-Ostwald-Institute
for Physical and Theoretical Chemistry, Faculty of Chemistry and Mineralogy, University of Leipzig, Permoserstrasse 15, 04318 Leipzig, Germany
- Chemistry
Department, Faculty of Science, Al-Azhar University, Nasr City, 11884, Cairo, Egypt
| | - Sergej Naumov
- Chemical
Department, Leibniz Institute of Surface Modification, Permoserstrasse
15, 04318 Leipzig, Germany
| | - Stanislaw Schastak
- Department
of Ophthalmology, Faculty of Medicine, Univeristy of Leipzig, Liebigstrasse
10-14, 04103 Leipzig, Germany
- Laser-Medical Center e.V., Liebigstrasse
10-14, 04103 Leipzig, Germany
| | - Jan Griebel
- Wilhelm-Ostwald-Institute
for Physical and Theoretical Chemistry, Faculty of Chemistry and Mineralogy, University of Leipzig, Permoserstrasse 15, 04318 Leipzig, Germany
| | - Axel Kahnt
- Department
of Chemistry and Pharmacy and Interdisciplinary Center for Molecular
Materials, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstrasse 3, 91058 Erlangen, Germany
| | - Tilmann Häupl
- Wilhelm-Ostwald-Institute
for Physical and Theoretical Chemistry, Faculty of Chemistry and Mineralogy, University of Leipzig, Permoserstrasse 15, 04318 Leipzig, Germany
| | - Jochen Neuhaus
- Department
of Urology, University of Leipzig, Liebigstrasse 20, 04103 Leipzig, Germany
| | - Bernd Abel
- Wilhelm-Ostwald-Institute
for Physical and Theoretical Chemistry, Faculty of Chemistry and Mineralogy, University of Leipzig, Permoserstrasse 15, 04318 Leipzig, Germany
- Chemical
Department, Leibniz Institute of Surface Modification, Permoserstrasse
15, 04318 Leipzig, Germany
| | - Ralf Hermann
- Wilhelm-Ostwald-Institute
for Physical and Theoretical Chemistry, Faculty of Chemistry and Mineralogy, University of Leipzig, Permoserstrasse 15, 04318 Leipzig, Germany
- Laser-Medical Center e.V., Liebigstrasse
10-14, 04103 Leipzig, Germany
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Nekolla E, Griebel J, Brix G. Die Strahlenexposition der Bevölkerung durch Röntgenuntersuchungen in Deutschland: 1996 bis 2011. ROFO-FORTSCHR RONTG 2014. [DOI: 10.1055/s-0034-1373608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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23
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Zeckert K, Griebel J, Kirmse R, Weiß M, Denecke R. Versatile Reactivity of a Lithium Tris(aryl)plumbate(II) Towards Organolanthanoid Compounds: Stable Lead-Lanthanoid-Metal Bonds or Redox Processes. Chemistry 2013; 19:7718-22. [DOI: 10.1002/chem.201300596] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2013] [Indexed: 11/09/2022]
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Brix G, Griebel J, Delorme S. [Dynamic contrast-enhanced computed tomography. Tracer kinetics and radiation hygienic principles]. Radiologe 2012; 52:277-94; quiz 295-6. [PMID: 22476707 DOI: 10.1007/s00117-011-2277-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Technical innovations in multislice computed tomography (CT) allow for larger volume coverage in ever shorter scan times. This progress has stimulated the clinical application of dynamic contrast-enhanced (DCE) CT techniques, which offer the possibility to noninvasively characterize tissue microcirculation in terms of well-defined physiological quantities. This educational review imparts to radiologists the essential physiological terms and definitions as well as the basic tracer kinetic concepts required for the analysis of DCE-CT data. In particular, four different approaches are presented and exemplified by the analysis of representative DCE data: the steepest-gradient method, model-free algebraic deconvolution in combination with the indicator-dilution theory, two-compartment modelling and the so-called adiabatic approximation to the homogeneity model. Even though DCE-CT offers substantial methodological and practical advantages as compared to DCE-MRI (magnetic resonance imaging), there are also two serious and interconnected shortcomings: the low contrast enhancement in relation to the noise level and the high exposure of patients to ionizing radiation. These limiting aspects are considered in detail from a radiation hygienic point of view, emphasizing the basic principles of justification and optimization. Clinically established as well as potential future applications of DCE-CT will be presented in a subsequent paper.
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Affiliation(s)
- G Brix
- Abteilung für Medizinischen und Beruflichen Strahlenschutz, Fachbereich Strahlenschutz und Gesundheit, Bundesamt für Strahlenschutz, Ingolstädter Landstr. 1, 85764 Neuherberg.
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Schüler E, Nekolla EA, Griebel J, Brix G. Lungenkrebs-Früherkennung mittels CT: Aktuelle Bewertung aus strahlenhygienischer Sicht. ROFO-FORTSCHR RONTG 2012. [DOI: 10.1055/s-0032-1311472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Habeck M, Epsch R, Minkov V, Langer M, Griebel J, Brix G. [Changes in the "medical research" licensing procedure under the German Radiation Protection Ordinance]. ROFO-FORTSCHR RONTG 2012; 184:513-9. [PMID: 22331822 DOI: 10.1055/s-0031-1299120] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Abstract
This publication outlines the "medical research" licensing procedure as specified in the amendment of the German Radiation Protection Ordinance of November 1, 2011. The general licensing requirements for the use of radiation have not been changed by the amendment. Three so-called use restrictions (i. e., dose limits of 10 mSv and 20 mSv, age limit of 50 years) have been modified. They will only apply to healthy volunteers in the future. In addition, there are considerable simplifications with respect to applications and licensing procedures of the Federal Office for Radiation Protection (Bundesamt für Strahlenschutz, BfS) regarding the use of radiation in the newly introduced "accompanying diagnostics" ("Begleitdiagnostik") case group. The newly established, independent panel of experts at the German Radiological Society (Deutsche Röntgengesellschaft, DRG) may provide essential support to principal investigators, qualified physicians and sponsors for differentiating between "medical research" and "health care", the latter not being subject to licensing. An expert statement will be issued by the DRG within four weeks of an inquiry. This consulting service is subject to confidentiality, and is free of charge for inquirers and without any commitment.
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Affiliation(s)
- M Habeck
- Fachbereich Strahlenschutz und Gesundheit, Bundesamt für Strahlenschutz, Neuherberg.
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Nekolla EA, Griebel J, Brix G. [Radiation hygiene in medical X-ray imaging. Part 3: radiation exposure of patients and risk assessment]. Radiologe 2011; 50:1039-52; quiz 1053-4. [PMID: 21076904 DOI: 10.1007/s00117-010-2074-x] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The frequency of X-ray examinations in Germany and the resulting radiation exposure is amongst the highest in comparison with other European countries. To reduce medical radiation exposure and to safeguard radiation protection regulations, the X-ray ordinance stipulates a justification of each individual X-ray application. The justification principle means that the X-ray application should produce sufficient health benefit to offset the radiation risk. Such a benefit-risk assessment needs an adequate estimation of radiation risk. The aim of this paper is to explain the principles of benefit-risk assessment for different situations (e.g. healthcare and screening). The basics and concepts of radiation effects and radiation epidemiology as well as examples of risk estimation and benefit-risk assessments are given.
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Affiliation(s)
- E A Nekolla
- Abteilung für Medizinischen und Beruflichen Strahlenschutz, Fachbereich Strahlenschutz und Gesundheit, Bundesamt für Strahlenschutz, Ingolstädter Landstr. 1, 85764 Neuherberg, Deutschland.
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Nekolla EA, Hahn C, Griebel J, Brix G. Welchen Einfluss hat die Einführung des Mammographie-Screening-Programms auf die Häufigkeit von Mammographie-Untersuchungen? ROFO-FORTSCHR RONTG 2011. [DOI: 10.1055/s-0031-1279595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Brix G, Zwick S, Kiessling F, Griebel J. Schätzung der Gewebeperfusion aus dynamischen CT-Daten: Simulationsbasierte Evaluierung der Methode des „steilsten Gradienten“. ROFO-FORTSCHR RONTG 2011. [DOI: 10.1055/s-0031-1279556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Lässig D, Lincke J, Griebel J, Kirmse R, Krautscheid H. Synthesis, Crystal Structure, and Electron Paramagnetic Resonance Investigations of Heteronuclear CoII/ZnII and CoII/CdII Coordination Polymers. Inorg Chem 2010; 50:213-9. [DOI: 10.1021/ic101783z] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Daniel Lässig
- Fakultät für Chemie und Mineralogie, Universität Leipzig, Johannisallee 29, D-04103 Leipzig, Germany
| | - Jörg Lincke
- Fakultät für Chemie und Mineralogie, Universität Leipzig, Johannisallee 29, D-04103 Leipzig, Germany
| | - Jan Griebel
- Fakultät für Chemie und Mineralogie, Universität Leipzig, Johannisallee 29, D-04103 Leipzig, Germany
| | - Reinhard Kirmse
- Fakultät für Chemie und Mineralogie, Universität Leipzig, Johannisallee 29, D-04103 Leipzig, Germany
| | - Harald Krautscheid
- Fakultät für Chemie und Mineralogie, Universität Leipzig, Johannisallee 29, D-04103 Leipzig, Germany
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Kaloudi-Chantzea A, Karakostas N, Raptopoulou CP, Psycharis V, Saridakis E, Griebel J, Hermann R, Pistolis G. Coordination-Driven Self Assembly of a Brilliantly Fluorescent Rhomboid Cavitand Composed of Bodipy-Dye Subunits. J Am Chem Soc 2010; 132:16327-9. [DOI: 10.1021/ja1064679] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.4] [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)
- Antonia Kaloudi-Chantzea
- NCSR “Demokritos” Institute of Physical Chemistry and Institute of Materials Science, 153 10 Athens, Greece, and Fakultät für Chemie und Mineralogie, Universität Leipzig, 04318 Leipzig, Germany
| | - Nikolaos Karakostas
- NCSR “Demokritos” Institute of Physical Chemistry and Institute of Materials Science, 153 10 Athens, Greece, and Fakultät für Chemie und Mineralogie, Universität Leipzig, 04318 Leipzig, Germany
| | - Catherine P. Raptopoulou
- NCSR “Demokritos” Institute of Physical Chemistry and Institute of Materials Science, 153 10 Athens, Greece, and Fakultät für Chemie und Mineralogie, Universität Leipzig, 04318 Leipzig, Germany
| | - Vassilis Psycharis
- NCSR “Demokritos” Institute of Physical Chemistry and Institute of Materials Science, 153 10 Athens, Greece, and Fakultät für Chemie und Mineralogie, Universität Leipzig, 04318 Leipzig, Germany
| | - Emmanuel Saridakis
- NCSR “Demokritos” Institute of Physical Chemistry and Institute of Materials Science, 153 10 Athens, Greece, and Fakultät für Chemie und Mineralogie, Universität Leipzig, 04318 Leipzig, Germany
| | - Jan Griebel
- NCSR “Demokritos” Institute of Physical Chemistry and Institute of Materials Science, 153 10 Athens, Greece, and Fakultät für Chemie und Mineralogie, Universität Leipzig, 04318 Leipzig, Germany
| | - Ralf Hermann
- NCSR “Demokritos” Institute of Physical Chemistry and Institute of Materials Science, 153 10 Athens, Greece, and Fakultät für Chemie und Mineralogie, Universität Leipzig, 04318 Leipzig, Germany
| | - George Pistolis
- NCSR “Demokritos” Institute of Physical Chemistry and Institute of Materials Science, 153 10 Athens, Greece, and Fakultät für Chemie und Mineralogie, Universität Leipzig, 04318 Leipzig, Germany
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Brix G, Zwick S, Kiessling F, Griebel J. Tracerkinetische Analyse dynamischer kontrastverstärkter Bilddaten: Mehrmodellschätzung physiologischer Gewebeparameter. ROFO-FORTSCHR RONTG 2010. [DOI: 10.1055/s-0030-1253005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Griebel J, Habeck M, Bertram H, Sonnek C. Hands-On-Workshop: Schulung für Multiplikatoren aus Industrie und Wissenschaft – Qualitätssteigerung der Anträge nach §28a RöV und §24 StrlSchV. ROFO-FORTSCHR RONTG 2010. [DOI: 10.1055/s-0030-1252400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Nekolla EA, Griebel J, Brix G. Strahlenexposition der Bevölkerung durch Röntgendiagnostik: Trends für die Jahre 1996–2006. ROFO-FORTSCHR RONTG 2010. [DOI: 10.1055/s-0030-1253061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Nekolla EA, Brix G, Griebel J. Strahlenhygienische Bewertung medizinischer Röntgenanwendungen bei Schwangeren: Risikobewertung für das Ungeborene. ROFO-FORTSCHR RONTG 2009. [DOI: 10.1055/s-0029-1221104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Brix G, Nekolla EA, Griebel J. Strahlenhygienische Bewertung medizinischer Röntgenanwendungen in der Heilkunde: aktuelle Trends, Bewertung und Strahlenschutzprinzipien. ROFO-FORTSCHR RONTG 2009. [DOI: 10.1055/s-0029-1221103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Nekolla EA, Aroua A, Hart D, Olerud HM, Griebel J, Aubert B, Lecluyse A, Leitz W, Shannoun F, Stoop P, Waltenburg H, Wall B. Ergebnisse der europäischen Arbeitsgruppe DOSE DATAMED: Vergleich von Häufigkeit und Dosis röntgendiagnostischer Maßnahmen für zehn europäische Länder. ROFO-FORTSCHR RONTG 2009. [DOI: 10.1055/s-0029-1221760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Griebel J, Nekolla EA, Brix G. Früherkennung: Nutzen-Risiko-Betrachtungen. ROFO-FORTSCHR RONTG 2009. [DOI: 10.1055/s-0029-1221105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Griebel J. Schulungsveranstaltung für Multiplikatoren aus Industrie und Wissenschaft – Qualitätssteigerung der Anträge nach §28a RöV und §24 StrlSchV. ROFO-FORTSCHR RONTG 2009. [DOI: 10.1055/s-0029-1221149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Drost C, Griebel J, Kirmse R, Lönnecke P, Reinhold J. A Stable and Crystalline Triarylgermyl Radical: Structure and EPR Spectra. Angew Chem Int Ed Engl 2009; 48:1962-5. [DOI: 10.1002/anie.200805328] [Citation(s) in RCA: 17] [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] [Indexed: 11/10/2022]
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Drost C, Griebel J, Kirmse R, Lönnecke P, Reinhold J. Stabil und kristallin: Struktur und ESR-Spektren eines Triarylgermylradikals. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200805328] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [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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Minkov V, Nekolla EA, Nosske D, Griebel J, Brix G. [Nuclear-medical irradiation during pregnancy. Risk assessment for the offspring]. Nuklearmedizin 2009; 48:10-16. [PMID: 19212606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
UNLABELLED AIM To estimate and evaluate the risks for the offspring due to the administration of radiopharmaceuticals to women during the first pregnancy weeks after conception (weeks p.c.). METHODS The in-utero exposition of the embryo due to diagnostic nuclear medicine procedures, for which diagnostic reference levels (DRL) are specified, as well as due to radio iodine therapy (RIT) was determined. To this end, it is assumed that the activity of the diagnostic radiopharmaceuticals administered to the mother corresponds with the DRL and amounts to 600 MBq or 4 GBq 131I for RIT of benign or malignant thyroid disease, respectively. Based on these data, the radiation risk for the offspring was assessed and compared with the spontaneous risks (R0). RESULTS The dose for the offspring does not exceed 7.8 mSv for the diagnostic procedures considered, resulting in an excess risk for the offspring of less than 0.12% (R0 approximately 25%) to die from cancer during life, of less than 0.07% (R0 approximately 0.2%) to develop cancer up to the age of 15 years, and of less than 0.16% (R0 approximately 2%) for hereditary effects. RIT during the first 8 weeks p.c. results in doses for the offspring of about 100-460 mSv, resulting in an excess risk for malformations of the child of 3.4%-22% (R0 approximately 6%). CONCLUSIONS The risk of stochastic radiation effects for the offspring due to a diagnostic nuclear medicine procedure of the mother during the first 8 weeks p.c. is--compared with the spontaneous risks--very small; deterministic effects are unlikely. In contrast, deterministic effects for the offspring may occur following RIT. In order to decide on a possibly indicated abortion after RIT, an individual risk assessment is mandatory.
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Affiliation(s)
- V Minkov
- Abetilung for Medizinische Strahlenhygiene und Dosimetrie, Fachbereich Strahlenschuts und Gesundheit, Bundesamt für Strahlenschutz, Ingolstädter Landstr. 1, 85764 Oberschleissheim.
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Rodenstein A, Creutzburg D, Schmiedel P, Griebel J, Hennig L, Kirmse R. Synthese, Strukturen, EPR- und NMR-Untersuchungen vonN,N′-o-Phenylen-bis(N″,N″-dialkyl-N‴-benzimidoyl-thioureato)-Komplexen des NiIIund CuII(alkyl = C2H5,i-C4H9) sowie des Benzo[b]pyrimido-[1,6-d][1,4]diazepin-12-ium-dichlorocuprats(I). Z Anorg Allg Chem 2008. [DOI: 10.1002/zaac.200800267] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [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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Rodenstein A, Griebel J, Richter R, Kirmse R. Synthese, Strukturen, NMR- und EPR-Untersuchungen der binuklearen Bis(N,N,N‴,N‴-tetraisobutyl-N′,N″-isophthaloylbis(selenoureato))-Komplexe des NiIIund CuII. Z Anorg Allg Chem 2008. [DOI: 10.1002/zaac.200800162] [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: 11/09/2022]
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Krüger T, Albrecht C, Rüffer T, Lang H, Griebel J, Kirmse R, Steinborn D. Synthese, Struktur und EPR-spektroskopische Charakterisierung von Titanocenkomplexen mit Dimethylmalonatoliganden. Z Anorg Allg Chem 2008. [DOI: 10.1002/zaac.200700581] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Rodenstein A, Griebel J, Richter R, Kirmse R. Synthese, Struktur und EPR-Untersuchungen von binuklearen Bis(N,N,N‴,N‴-tetraisobutyl-N′,N″-isophthaloylbis(thioureato))-Komplexen des CuII, NiII, ZnII, CdII und PdII. Z Anorg Allg Chem 2008. [DOI: 10.1002/zaac.200700513] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Brix G, Nissen-Meyer S, Lechel U, Nissen-Meyer J, Griebel J, Nekolla EA, Becker C, Reiser M. Strahlenexposition durch diagnostische und interventionelle Röntgenanwendungen: Erfassung der kumulativen 5-Jahresdosis von Krebspatienten. ROFO-FORTSCHR RONTG 2008. [DOI: 10.1055/s-2008-1074015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Nekolla EA, Brix G, Griebel J. Bewertung des Strahlenrisikos von CT-Früherkennungsuntersuchungen. ROFO-FORTSCHR RONTG 2008. [DOI: 10.1055/s-2008-1074018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Nekolla EA, Brix G, Griebel J. Welche Rolle spielt die Teilgebietsradiologie in Deutschland aus strahlenhygienischer Perspektive? ROFO-FORTSCHR RONTG 2008. [DOI: 10.1055/s-2008-1074019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Griebel J. Schulungen für Multiplikatoren aus Industrie und akademischem Umfeld zur Erhöhung der Qualität der eingereichten Anträge nach §28a RöV/§23 StrlSchV. ROFO-FORTSCHR RONTG 2008. [DOI: 10.1055/s-2008-1073341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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