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Kehayias P, Jarmola A, Mosavian N, Fescenko I, Benito FM, Laraoui A, Smits J, Bougas L, Budker D, Neumann A, Brueck SRJ, Acosta VM. Solution nuclear magnetic resonance spectroscopy on a nanostructured diamond chip. Nat Commun 2017; 8:188. [PMID: 28775280 PMCID: PMC5543112 DOI: 10.1038/s41467-017-00266-4] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Accepted: 06/15/2017] [Indexed: 11/29/2022] Open
Abstract
Sensors using nitrogen-vacancy centers in diamond are a promising tool for small-volume nuclear magnetic resonance (NMR) spectroscopy, but the limited sensitivity remains a challenge. Here we show nearly two orders of magnitude improvement in concentration sensitivity over previous nitrogen-vacancy and picoliter NMR studies. We demonstrate NMR spectroscopy of picoliter-volume solutions using a nanostructured diamond chip with dense, high-aspect-ratio nanogratings, enhancing the surface area by 15 times. The nanograting sidewalls are doped with nitrogen-vacancies located a few nanometers from the diamond surface to detect the NMR spectrum of roughly 1 pl of fluid lying within adjacent nanograting grooves. We perform 1H and 19F nuclear magnetic resonance spectroscopy at room temperature in magnetic fields below 50 mT. Using a solution of CsF in glycerol, we determine that 4 ± 2 × 1012 19F spins in a 1 pl volume can be detected with a signal-to-noise ratio of 3 in 1 s of integration. Nitrogen vacancy (NV) centres in diamond can be used for NMR spectroscopy, but increased sensitivity is needed to avoid long measurement times. Kehayias et al. present a nanostructured diamond grating with a high density of NV centres, enabling NMR spectroscopy of picoliter-volume solutions.
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Renner I, Neumann A, Paul M. Frühe Hilfen in Deutschland: Ein Vorschlag zur bundesweit repräsentativen Erhebung familialer Belastungen. DAS GESUNDHEITSWESEN 2017. [DOI: 10.1055/s-0037-1605726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Neusser S, Biermann J, Wasem J, Schmutzler R, Rhiem K, Neumann A. Die budgetären Auswirkungen der genetischen Testung auf BRCA1/2-Mutationen für die Gesetzliche Krankenversicherung. DAS GESUNDHEITSWESEN 2017. [DOI: 10.1055/s-0037-1605721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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54
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Neumann A, Meyer L, Hörster L, Dührsen U, Jöckel KH, Baum J, Merkel-Jens A, Lehmann N, Lax H, Wasem J. Analyse des Ressourcenverbrauchs und der Kosten in der Nachsorge von Blutkrebspatienten. DAS GESUNDHEITSWESEN 2017. [DOI: 10.1055/s-0037-1605722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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55
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Chodos A, Neumann A, Rivera J, Myers J, Frazier R, Walter L. PARTNERING TO BETTER SERVE VULNERABLE OLDER ADULTS: THE OPTIMIZE AGING COLLABORATIVE. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.2256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Brandhorst H, Olbrich M, Neumann A, Jahr H, Brandhorst D. Effect of Pretransplant Preconditioning by Whole Body Hyperthermia on Islet Graft Survival. Cell Transplant 2017; 16:707-15. [DOI: 10.3727/000000007783465163] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Previous observations in heat-shocked pig islets revealed the ambivalent character of the stress response simultaneously inducing processes of protection and apoptosis. To clarify whether the proapoptotic character of the stress response is reduced in heat-exposed islets still embedded in their native environment, hyperthermia was performed in the present study either as whole body hyperthermia (WBH) prior to pancreas resection or as in vitro heat shock (HS) after isolation. HS (42°C/45 min) was induced in donors 12 h before isolation (WBH, n = 32) or in freshly isolated islets prior to 12 h of culture at 37°C (in vitro HS, n = 25). Islets continuously incubated at 37°C served as controls (n = 34). Proinflammatory treatment was performed with H2O2, DETA-NO, or a combination of IL-1β, TNF-α, and IFN-γ. Quality assessment included islet yield, viability staining, static glucose incubation, and nude mouse transplantation. WBH was significantly less effective than in vitro HS to induce HSP70 overexpression and to increase islet resistance against inflammatory mediators. Although characterized by an unaltered Bax to Bcl-2 ratio, islets subjected to WBH partially failed to restore sustained normoglycemia in diabetic nude mice. The inflammatory response observed in the pancreas of WBH-treated rats was associated with significantly reduced viability that seems to have a higher predictive value for posttransplant outcome compared to islet in vitro function or mitochondrial activity. In contrast, in vitro HS significantly decreased transcript levels of Bcl-2, but did not affect posttransplant function compared to sham-treated islets. These findings suggest that WBH is primarily associated with increased necrosis as a secondary tissue type-specific effect of pancreas damage while in vitro HS mainly induces apoptosis.
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Wolter E, Neumann A, Straff W. [Monitoring methods and their results in environmental medicine - implications for medical counsellors]. Bundesgesundheitsblatt Gesundheitsforschung Gesundheitsschutz 2017; 60:577-583. [PMID: 28492968 DOI: 10.1007/s00103-017-2544-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Besides effect and environmental monitoring, human biomonitoring (HBM) offers an attractive method for analyzing the distribution and intensity of anthropogenic environmental pollutants in individuals or in particular groups of the population. However, no assessment values of comparable reliability are available to enable an interpretation of the results of environmental studies from the viewpoint of environmental health. This must be taken into account when reporting findings of such studies as well as in medical consultation, in order to avoid overdiagnosis and unnecessary anxiety for the participant. In medical practice, care should be taken when dealing with monitoring results outside the normal range! Environmental or biomonitoring results provide only a part of the available information alongside medical history and clinical examinations. In the case of tests performed for private interests as well as tests carried out within the framework of an epidemiological environmental survey, communication of results and findings can be problematic. In epidemiological studies, a close co-operation between the participant's consultant physician and physicians conducting the study is beneficial in order to ensure professional advisory counselling for subjects with results outside the normal range.
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Bannay A, Neumann A, Weill A, Alla F, Jay N. Proposition d’algorithme pour l’identification des cancers de vessie incidents et traités à partir du Sniiram/PMSI. Rev Epidemiol Sante Publique 2017. [DOI: 10.1016/j.respe.2017.01.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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59
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Neumann A, Tournier M, Alla F, Bégaud B, Maura G, Verdoux H. Résultats de trois stratégies thérapeutiques dans la prévention des récidives du trouble bipolaire : une étude de cohorte à partir du Sniiram. Rev Epidemiol Sante Publique 2017. [DOI: 10.1016/j.respe.2017.01.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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60
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Medvedev A, Neumann A, Ng H, Lapovok R, Kasper C, Lowe T, Anumalasetty V, Estrin Y. Combined effect of grain refinement and surface modification of pure titanium on the attachment of mesenchymal stem cells and osteoblast-like SaOS-2 cells. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 71:483-497. [DOI: 10.1016/j.msec.2016.10.035] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Revised: 09/17/2016] [Accepted: 10/18/2016] [Indexed: 01/17/2023]
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Hirsch A, Kegler P, Alencar I, Ruiz-Fuertes J, Shelyug A, Peters L, Schreinemachers C, Neumann A, Neumeier S, Liermann HP, Navrotsky A, Roth G. Structural, vibrational, and thermochemical properties of the monazite-type solid solution La1–Pr PO4. J SOLID STATE CHEM 2017. [DOI: 10.1016/j.jssc.2016.09.032] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Petzold T, Neumann A, Seifert M, Küster D, Pfennig A, Weiß J, Häckl D, Swart E, Schmitt J. [Identification of Control Hospitals for the Implementation of the Nationwide and Standardized Evaluation of Model Projects According to § 64b SGB V: Analysis of Data from Structured Quality Reports]. DAS GESUNDHEITSWESEN 2016; 81:63-71. [PMID: 27846670 DOI: 10.1055/s-0042-116436] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
BACKGROUND Health care needs of mentally ill patients make special demands on cross-sectoral health care structures. § 64b SGB V enables care of mentally ill patients through model projects that are multi-professional, work across treatment periods and sectors and implement new forms of financing. These model projects in their hospitals (case hospitals) need to be evaluated and compared with standard treatment methods. OBJECTIVES The aim of this analysis is to identify matching hospitals according to a priori defined criteria for the establishment of a control group (control hospitals) using secondary data. MATERIALS AND METHODS A systematic analysis was conducted based on structured quality reports according to §+137 SGB V and matched data from the Federal Institute for Research on Building, Urban Affairs and Spatial Development (BBSR). Based on a priori defined knock-out criteria, criteria based on patients (weighting 50%), structural features of hospitals (25%) and environmental factors (25%), a weighted similarity score was calculated for each of the 13 case hospitals, which could reach the maximum of 100 points (perfect match). RESULTS 10 control hospitals per case hospital were identified according to the weighted similarity score. The median of the total deviation of potential control hospitals from the case hospitals was 34.3 (range: 17.6-66.7). The median of the 10 selected control hospitals per case hospital was 30.9 (range: 17.6-40.8). DISCUSSION The defined algorithm could be used to identify similar control hospitals. The method using the mentioned databases and derivation of specific criteria of structural similarity are generally suitable in controlled designs for the evaluation of complex interventions based on routine data.
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Wildner M, Biermann J, Neumann A. Health Literacy: The Public Health Service – approach. Eur J Public Health 2016. [DOI: 10.1093/eurpub/ckw167.084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Neiman V, Keizman D, Sarid D, Lee JL, Sella A, Gottfried M, Hammers H, Eisenberger M, Carducci M, Sinibaldi V, Rosenbaum E, Peer A, Neumann A, Mermershtain W, Rouvinov K, Berger R, Yildiz I. Outcome of patients with metastatic chromophobe renal cell carcinoma treated with sunitinib. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw373.58] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Lee SC, Neumann A, Jiang YB, Artyushkova K, Brueck SRJ. Top-down, in-plane GaAs nanowire MOSFETs on an Al2O3 buffer with a trigate oxide from focused ion-beam milling and chemical oxidation. NANOTECHNOLOGY 2016; 27:375707. [PMID: 27504931 DOI: 10.1088/0957-4484/27/37/375707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The top-down fabrication of an in-plane nanowire (NW) GaAs metal-oxide-semiconductor field-effect transistor (MOSFET) with a trigate oxide implemented by liquid-phase chemical-enhanced oxidation (LPCEO) is reported. A 2 μm long channel having an effective cross section ∼70 × 220 nm(2) is directly fabricated into an epitaxial n (+)-GaAs layer. This in-plane NW structure is achieved by focused ion beam (FIB) milling and hydrolyzation oxidation resulting in electronic isolation from the substrate through a semiconductor-on-insulator structure with an n (+)-GaAs/Al2O3 layer stack. The channel is epitaxially connected to the μm-scale source and drain within a single layer for a planar MOSFET to avoid any issues of ohmic contact and LPCEO to the NW. To fabricate a MOSFET, the top and the two sidewalls of the in-plane NW are oxidized by LPCEO to relieve the surface damage from FIB as well as to transform these surfaces to a ∼15 nm thick gate oxide. This trigate device has threshold voltage ∼0.14 V and peak transconductance ∼35 μS μm(-1) with a subthreshold swing ∼150 mV/decade and on/off ratio of drain current ∼10(3), comparable to the performance of bottom-up NW devices.
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Diekmann S, Hörster L, Neumann A, Weber-Krüger M, Gelbrich G, Gröschel K, Wachter R, Wasem J. Sekundärprävention nach Schlaganfall (Find-AF randomised): Kosten-Nutzwert-Analyse eines verlängerten EKG-Monitorings. DAS GESUNDHEITSWESEN 2016. [DOI: 10.1055/s-0036-1586535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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67
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Meyer L, Hörster L, Dührsen U, Jöckel KH, Baum J, Lehmann N, Merkel-Jens A, Lax H, Wasem J, Neumann A. Analyse des Ressourcenverbrauchs und der Kosten in der Nachsorge von Blutkrebspatienten. DAS GESUNDHEITSWESEN 2016. [DOI: 10.1055/s-0036-1586534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Feißel A, Arnold K, Häckl D, Kliemt R, Küster D, Milarczyk J, Neumann A, Pfennig A, Schmitt J, Swart E, Weiß J, March S. Herausforderungen beim Datenhandling am Beispiel einer routinedatenbasierten und kassenübergreifenden Studie zur wissenschaftlichen Evaluation von Modellvorhaben nach §64b SGB V (EVA64). DAS GESUNDHEITSWESEN 2016. [DOI: 10.1055/s-0036-1586695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Weschenfelder AK, Schewe K, Hoffmann C, Klauke S, Wolf E, Wasem J, Neumann A. Studienkonzept zur pharmakoökonomischen Evaluation verschiedener antiretorviraler Primärtherapien bei HIV-Infektionen – Prospective clinical and pharmacoeconomic outcomes study of different first-line antiretroviral treatment strategies (PROPHET). DAS GESUNDHEITSWESEN 2016. [DOI: 10.1055/s-0036-1586697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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70
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Reiger M, Garzorz-Stark N, Neumann A, Altunbulakli C, Akdis C, Traidl-Hoffmann C. 438 Differences between the microbiome of lesional and non-lesional skin in atopic dermatitis. J Invest Dermatol 2016. [DOI: 10.1016/j.jid.2016.06.458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Altunbulakli C, Neumann A, Castro Giner F, Garzorz-Stark N, Reiger M, Akdis M, Traidl-Hoffmann C, Akdis C. 096 Transcriptomic analysis of epidermal barrier molecules, cytokines and growth factors in atopic dermatitis lesions. J Invest Dermatol 2016. [DOI: 10.1016/j.jid.2016.06.114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Jensen MP, Petersen WA, Bansemer A, Bharadwaj N, Carey LD, Cecil DJ, Collis SM, Del Genio AD, Dolan B, Gerlach J, Giangrande SE, Heymsfield A, Heymsfield G, Kollias P, Lang TJ, Nesbitt SW, Neumann A, Poellot M, Rutledge SA, Schwaller M, Tokay A, Williams CR, Wolff DB, Xie S, Zipser EJ. THE MIDLATITUDE CONTINENTAL CONVECTIVE CLOUDS EXPERIMENT (MC3E). BULLETIN OF THE AMERICAN METEOROLOGICAL SOCIETY 2016; 97:1667-1686. [PMID: 32669729 PMCID: PMC7362300 DOI: 10.1175/bams-d-14-00228.1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Abstract
The Midlatitude Continental Convective Clouds Experiment (MC3E), a field program jointly led by the U.S. Department of Energy’s Atmospheric Radiation Measurement (ARM) Program and the National Aeronautics and Space Administration’s (NASA) Global Precipitation Measurement (GPM) mission, was conducted in south-central Oklahoma during April–May 2011. MC3E science objectives were motivated by the need to improve our understanding of midlatitude continental convective cloud system life cycles, microphysics, and GPM precipitation retrieval algorithms. To achieve these objectives, a multiscale surface- and aircraft-based in situ and remote sensing observing strategy was employed. A variety of cloud and precipitation events were sampled during MC3E, of which results from three deep convective events are highlighted. Vertical structure, air motions, precipitation drop size distributions, and ice properties were retrieved from multiwavelength radar, profiler, and aircraft observations for a mesoscale convective system (MCS) on 11 May. Aircraft observations for another MCS observed on 20 May were used to test agreement between observed radar reflectivities and those calculated with forward-modeled reflectivity and microwave brightness temperatures using in situ particle size distributions and ice water content. Multiplatform observations of a supercell that occurred on 23 May allowed for an integrated analysis of kinematic and microphysical interactions. A core updraft of 25 m s−1 supported growth of hail and large raindrops. Data collected during the MC3E campaign are being used in a number of current and ongoing research projects and are available through the ARM and NASA data archives.
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Haase O, Angün O, Grätz V, Lüttmann N, Neumann A, Zillikens D, Terheyden P. Ansprechen eines BRAFL597Q-mutierten Melanoms auf Trametinib. Hautarzt 2016; 67:648-52. [DOI: 10.1007/s00105-016-3785-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Bara C, Przybylek B, Neumann A, Haverich A, Falk C. Immune Mediators IL-10 and TNF-alpha as a Potential Diagnostic Tool for Detection of Developed Cardiac Allograft Vasculopathy. J Heart Lung Transplant 2016. [DOI: 10.1016/j.healun.2016.01.179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Neumann A, Koigeldiyev N, Shrestha M, Martens A. Complex aortic arch repair in a patient with Takayasu's disease presenting with acute aortic dissection type Stanford A and complete collateral perfusion of the brain. Interact Cardiovasc Thorac Surg 2015; 22:384-6. [PMID: 26637541 DOI: 10.1093/icvts/ivv336] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Accepted: 11/01/2015] [Indexed: 11/14/2022] Open
Abstract
We describe a rare case of a 46-year old woman suffering from Takayasu's disease. She had undergone aorto-biaxillary bypass and aorto-cerebral bypass surgery in 1985 for occlusive arterial disease and developed a large ascending pseudoaneurysm of the aorto-biaxillary bypass. The aorto-cerebral bypass and right axillary bypass were occluded. Native supra-aortic arteries were found to be proximally occluded and arterial blood supply to the brain was maintained by a dense arterial collateral network. The patient did not show neurological deficits and was able to work using both arms without restrictions. She refused early surgery but suffered from acute aortic dissection type Stanford A shortly after. Supracommissural ascending aortic and aortic arch repair under deep hypothermic circulatory arrest with no additional bypass to the head vessels was performed. This case demonstrates the significance of aortic complications in Takayasu's disease and the effectiveness of collateral brain perfusion in selected patients.
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