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Nashef A, Qabaja R, Salaymeh Y, Botzman M, Munz M, Dommisch H, Krone B, Hoffmann P, Wellmann J, Laudes M, Berger K, Kocher T, Loos B, van der Velde N, Uitterlinden AG, de Groot LCPGM, Franke A, Offenbacher S, Lieb W, Divaris K, Mott R, Gat-Viks I, Wiess E, Schaefer A, Iraqi FA, Haddad YH. Integration of Murine and Human Studies for Mapping Periodontitis Susceptibility. J Dent Res 2018; 97:537-546. [PMID: 29294296 DOI: 10.1177/0022034517744189] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Periodontitis is one of the most common inflammatory human diseases with a strong genetic component. Due to the limited sample size of available periodontitis cohorts and the underlying trait heterogeneity, genome-wide association studies (GWASs) of chronic periodontitis (CP) have largely been unsuccessful in identifying common susceptibility factors. A combination of quantitative trait loci (QTL) mapping in mice with association studies in humans has the potential to discover novel risk loci. To this end, we assessed alveolar bone loss in response to experimental periodontal infection in 25 lines (286 mice) from the Collaborative Cross (CC) mouse population using micro-computed tomography (µCT) analysis. The orthologous human chromosomal regions of the significant QTL were analyzed for association using imputed genotype data (OmniExpress BeadChip arrays) derived from case-control samples of aggressive periodontitis (AgP; 896 cases, 7,104 controls) and chronic periodontitis (CP; 2,746 cases, 1,864 controls) of northwest European and European American descent, respectively. In the mouse genome, QTL mapping revealed 2 significant loci (-log P = 5.3; false discovery rate = 0.06) on chromosomes 1 ( Perio3) and 14 ( Perio4). The mapping resolution ranged from ~1.5 to 3 Mb. Perio3 overlaps with a previously reported QTL associated with residual bone volume in F2 cross and includes the murine gene Ccdc121. Its human orthologue showed previously a nominal significant association with CP in humans. Use of variation data from the genomes of the CC founder strains further refined the QTL and suggested 7 candidate genes ( CAPN8, DUSP23, PCDH17, SNORA17, PCDH9, LECT1, and LECT2). We found no evidence of association of these candidates with the human orthologues. In conclusion, the CC populations enabled mapping of confined QTL that confer susceptibility to alveolar bone loss in mice and larger human phenotype-genotype samples and additional expression data from gingival tissues are likely required to identify true positive signals.
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Sieweke JT, Tongers J, Zauner F, Napp L, Kuehn C, Haverich A, Bauersachs J, Schaefer A. P3395Early dual mechanical support in refractory cardiogenic shock is a promising therapeutic strategy. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p3395] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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53
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Deuschl F, Schofer N, Ruebsamen N, Voigtlaender L, Kalbacher D, Seiffert M, Schaefer A, Schirmer J, Reichenspurner H, Blankenberg S, Conradi L, Schaefer U. P3287Peri-procedural predictors for cerebrovascular events in a TAVI all-comers population, a single center experience comprising 1313 patients. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p3287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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54
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Zauner F, Flierl U, Sieweke JT, Kruchten S, Tongers J, Napp L, Berliner D, Bauersachs J, Schaefer A. P2734Parameters indicative for prognostic and neurologic outcome: insights from the Hannover Hypothermia Registry. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p2734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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55
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Sieweke J, Berliner D, Zauner F, Flierl U, Kruchten S, Napp L, Tongers J, Bauersachs J, Schaefer A. P2779Left ventricular unloading with a microaxial flow-pump. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p2779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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56
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Schaefer A, O’dwyer N, Ferdinands RE, Edwards S. Consistency of kinematic and kinetic patterns during a prolonged spell of cricket fast bowling: an exploratory laboratory study. J Sports Sci 2017; 36:679-690. [DOI: 10.1080/02640414.2017.1330548] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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57
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Flege JI, Krisponeit JO, Höcker J, Hoppe M, Niu Y, Zakharov A, Schaefer A, Falta J, Krasovskii EE. Nanoscale analysis of the oxidation state and surface termination of praseodymium oxide ultrathin films on ruthenium(0001). Ultramicroscopy 2017; 183:61-66. [PMID: 28526269 DOI: 10.1016/j.ultramic.2017.05.007] [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: 12/31/2016] [Revised: 04/18/2017] [Accepted: 05/09/2017] [Indexed: 10/19/2022]
Abstract
The complex structure and morphology of ultrathin praseodymia films deposited on a ruthenium(0001) single crystal substrate by reactive molecular beam epitaxy is analyzed by intensity-voltage low-energy electron microscopy in combination with theoretical calculations within an ab initio scattering theory. A rich coexistence of various nanoscale crystalline surface structures is identified for the as-grown samples, notably comprising two distinct oxygen-terminated hexagonal Pr2O3(0001) surface phases as well as a cubic Pr2O3(111) and a fluorite PrO2(111) surface component. Furthermore, scattering theory reveals a striking similarity between the electron reflectivity spectra of praseodymia and ceria due to very efficient screening of the nuclear charge by the extra 4f electron in the former case.
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McNellan C, Dansereau E, Colombara D, Palmisano E, Wallace M, Johanns C, Schaefer A, Ríos-Zertuche D, Zúñiga-Brenes P, Hernandez B, Iriarte E, Mokdad A. Uptake of Antenatal Care, and its Relationship with Participation in
Health Services and Behaviors: An Analysis of the Poorest Regions of Four
Mesoamerican Countries. Ann Glob Health 2017. [DOI: 10.1016/j.aogh.2017.03.482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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59
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Schneeberger Y, Stenzig J, Löser A, Schaefer A, Wong E, Tan W, Reichenspurner H, Foo R, Eschenhagen T. Non-Nucleosidic DNA Methyl Transferase Inhibition Attenuates Pressure Overload Induced Cardiac Hypertrophy in Rats. J Heart Lung Transplant 2017. [DOI: 10.1016/j.healun.2017.01.1088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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60
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Titschert A, Felten A, Fischer S, Maslova M, Schaefer A, Weber W. Endovaskuläre Behandlung der Lungenarterienembolie. ROFO-FORTSCHR RONTG 2017. [DOI: 10.1055/s-0037-1600302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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61
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Timsit E, Workentine M, Crepieux T, Miller C, Regev-Shoshani G, Schaefer A, Alexander T. Effects of nasal instillation of a nitric oxide-releasing solution or parenteral administration of tilmicosin on the nasopharyngeal microbiota of beef feedlot cattle at high-risk of developing respiratory tract disease. Res Vet Sci 2017; 115:117-124. [PMID: 28231472 DOI: 10.1016/j.rvsc.2017.02.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Revised: 01/28/2017] [Accepted: 02/02/2017] [Indexed: 12/20/2022]
Abstract
Nitric oxide has bactericidal and virucidal properties. Nasal instillation of a nitric oxide releasing solution (NORS) on arrival at the feedlot was recently reported as inferior to a parenteral injection of tilmicosin (macrolide antibiotic) for control of bovine respiratory disease (BRD) in cattle at high-risk of developing BRD. We hypothesized that this inferiority was due to differences between treatments with regards to their effects on the nasopharyngeal microbiota. The objective was to compare nasal instillation of NORS versus parenteral administration of tilmicosin regarding their effects on the nasopharyngeal microbiota of feedlot cattle at high-risk of developing BRD. Culture-independent community profiling (16S rRNA sequencing) and culture-based methods were used to evaluate treatment effects. High-risk Angus-cross heifers (n=20) were randomly allocated to 2 treatment groups on arrival at a feedlot and received either NORS or tilmicosin for prevention of BRD. Heifers were sampled using guarded deep nasal swabs immediately prior to treatment (day 0) and on days 1, 5 and 10 after treatment. Based on culture-independent community profiling, there was a distinct shift in composition of the nasopharyngeal microbiota during the first 10 d after arrival, with 116 OTUs changing over time, but no difference between treatment groups. However, culture-based methods detected a difference between treatment groups, with more cattle culture-positive for Pasteurellaceae in the NORS group at day 5 post-treatment. This difference in ability to inhibit colonization of the nasopharynx by Pasteurellaceae may be the basis for NORS being inferior to tilmicosin for control of BRD in high-risk cattle.
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Schaefer A, Seiffert M, Reichart D, Schirmer J, Deuschl F, Schofer N, Schneeberger Y, Blankenberg S, Reichenspurner H, Schaefer U, Conradi L. Transcatheter Aortic Valve Implantation in Patients with Concomitant Mitral Valve Stenosis: Hemodynamic Considerations and Clinical Outcomes. Thorac Cardiovasc Surg 2017. [DOI: 10.1055/s-0037-1598667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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63
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Schaefer A, Dickow J, Schoen G, Westhofen S, Al-Saydali T, Kloss L, Reichenspurner H, Detter C. Aortic Valve Replacement for Infective Endocarditis: Case Matched Comparison of a Stentless Bovine Pericardial Aortic Valve vs. A Stented Bovine Pericardial Valve. Thorac Cardiovasc Surg 2017. [DOI: 10.1055/s-0037-1598773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Deuschl F, Schofer N, Seiffert M, Hakmi S, Mizote I, Schaefer A, Schirmer J, Reichenspurner H, Blankenberg S, Conradi L, Schäfer U. A Novel Self-Expandable Transcatheter Heart Valve for Aortic Stenosis Implanted via a Direct Percutaneous Transaxillary Approach. Thorac Cardiovasc Surg 2017. [DOI: 10.1055/s-0037-1598801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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65
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Schaefer A, Schneeberger Y, Stenzig J, Schulz S, Schwoerer A, Eschenhagen T, Ehmke H, Reichenspurner H, Cuello F. Cardiomyocytological Phosphorylation Alterations in Mechanical Unloaded Hypertrophic and Failing Hearts. Thorac Cardiovasc Surg 2017. [DOI: 10.1055/s-0037-1598818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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66
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Schaefer A, O’Dwyer N, Ferdinands R, Edwards S. Comparison of junior fast bowling technique from beginning to the end of a season. J Sci Med Sport 2017. [DOI: 10.1016/j.jsams.2017.01.162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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67
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Sandell A, Ragazzon D, Schaefer A, Farstad MH, Borg A. Photochemistry of Carboxylate on TiO 2(110) Studied with Synchrotron Radiation Photoelectron Spectroscopy. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:11456-11464. [PMID: 27754678 DOI: 10.1021/acs.langmuir.6b02989] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We present a dedicated synchrotron radiation photoelectron spectroscopy (SR-PES) study of a photochemical reaction on the surface of rutile TiO2(110). The photoreaction kinetics of carboxylate species (trimethyl acetate, TMA) upon irradiation by UV and soft X-rays were monitored, and we show that it is possible to control the reaction rates from UV light and soft X-rays independently. We directly observe Ti4+ → Ti3+ conversion upon irradiation, attributed to electron trapping at Ti sites close to surface OH groups formed by deprotonation of the parent molecule, trimethylacetic acid (TMAA). TMA photolysis on two surface preparations with different oxygen vacancy densities shows that the vacancy-related charge quenches the amount of charge that can be trapped at hydroxyls upon irradiation. During the initial stages of reaction the correlation between the amount of photodepleted TMA and the amount of charge trapped in the Ti 3d band gap state is nearly 1:1. A first-order kinetics analysis reveals that the reaction rate decreases with decreasing TMA coverage. There is also a coverage-dependent difference in the electronic structure of TMA moieties, primarily involving the carboxyl anchor group. These changes are consistent with a decreased hole affinity of the adsorbed TMA and hence a decreased reaction rate. This discovery adds to the previously presented picture of a reactivity that is inversely proportional to the number of surface hydroxyls, suggesting that the balance between the amounts of TMA, OH, and trapped charge needs to be considered.
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Oliveira R, Rosa R, Ascoli A, Rutzen W, Madeira L, Ghizzoni F, Khummer R, Vargas F, Lago L, Dietrich C, Ceron C, Guterres C, Vesz P, Schaefer A, Falavigna M, Lima K, Robinson C, Ribeiro R, Maccari J, Teixeira C. Factors influencing decline of physical functional status among icu survivors: a prospective cohort study. Intensive Care Med Exp 2016; 3:A361. [PMID: 27289905 PMCID: PMC4797845 DOI: 10.1186/2197-425x-3-s1-a361] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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69
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Fischer S, Kremer T, Horter J, Schaefer A, Ziegler B, Kneser U, Hirche C. Suprathel ® for severe burns in the elderly: Case report and review of the literature. Burns 2016; 42:e86-e92. [DOI: 10.1016/j.burns.2016.05.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Revised: 04/22/2016] [Accepted: 05/01/2016] [Indexed: 01/24/2023]
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70
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Schaefer A, Reichart D, Bernhardt A, Barten M, Wagner F, Deuse T, Reichenspurner H. Evaluating Predictive Parameters for Right Ventricular Failure During LVAD Implantation in a Single Center Patient Cohort. J Heart Lung Transplant 2016. [DOI: 10.1016/j.healun.2016.01.741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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71
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Bernhardt A, Levin A, Schaefer A, Wagner F, Reichenspurner H. Influence of Duration of Continuous-Flow Ventricular Assist Device Support on Post-Transplant Outcome - Results Using the United Network for Organ Sharing Database. J Heart Lung Transplant 2016. [DOI: 10.1016/j.healun.2016.01.607] [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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72
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Crepieux T, Miller C, Regev-Shoshani G, Schaefer A, Dorin C, Alexander T, Timsit E. Randomized, non-inferiority trial comparing a nitric oxide releasing solution with a macrolide antibiotic for control of bovine respiratory disease in beef feedlot calves at high-risk of developing respiratory tract disease. Res Vet Sci 2016; 105:216-21. [DOI: 10.1016/j.rvsc.2016.02.020] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2015] [Revised: 02/08/2016] [Accepted: 02/21/2016] [Indexed: 10/22/2022]
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73
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Bernhardt A, Levin A, Schaefer A, Wagner F, Reichenspurner H. The Overall Concept of Bridging to Transplantation by an Ventricular Assist Device in Comparison to Bridging by Conservative Treatment - Results Using the United Network for Organ Sharing Database. J Heart Lung Transplant 2016. [DOI: 10.1016/j.healun.2016.01.163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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74
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Bernhardt A, Barten M, Schaefer A, Sill B, Wagner F, Reichenspurner H, Deuse T. The Value of PET-CT Scans in Patients with Ventricular Assist Devices. J Heart Lung Transplant 2016. [DOI: 10.1016/j.healun.2016.01.346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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75
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Edwards K, Schaefer A, Greenwood M, Staines K. A Case of Undiagnosed Harlequin Syndrome Presenting in General Dental Practice. ACTA ACUST UNITED AC 2016; 43:90-2. [PMID: 27024906 DOI: 10.12968/denu.2016.43.1.90] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Harlequin syndrome is a rare, clinically striking syndrome characterized by distinctly demarcated asymmetric facial flushing and sweating. It may be of idiopathic aetiology or caused by demonstrable ipsilateral damage to the sympathetic nervous system. A case is described where a patient presented to her general dental practitioner complaining of distinctly demarcated unilateral facial flushing and sweating. Onward referral resulted in a diagnosis of Harlequin syndrome. CPD/CLINICAL RELEVANCE: This article highlights the neurological signs and symptoms of Harlequin syndrome, making it easier to recognize if it presents in general dental practice.
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