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Viviers SA, Richter L, du Plessis EM, Korsten L. Microbiological quality of irrigation water on highly diverse fresh produce smallholder farms: elucidating environmental routes of contamination. J Appl Microbiol 2024; 135:lxae091. [PMID: 38632044 DOI: 10.1093/jambio/lxae091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 03/12/2024] [Accepted: 04/16/2024] [Indexed: 04/19/2024]
Abstract
AIM To evaluate the microbiological safety, potential multidrug-resistant bacterial presence and genetic relatedness (DNA fingerprints) of Escherichia coli isolated from the water-soil-plant nexus on highly diverse fresh produce smallholder farms. METHODS AND RESULTS Irrigation water (n = 44), soil (n = 85), and fresh produce (n = 95) samples from six smallholder farms with different production systems were analysed for hygiene indicator bacterial counts and the presence of shigatoxigenic E. coli and Salmonella spp. using standard microbiological methods. Identities of isolates were confirmed using matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF MS), and the genetic relatedness of the E. coli isolates determined using enterobacterial repetitive intergenic consensus polymerase chain reaction (ERIC-PCR) analysis. Irrigation water E. coli levels ranged between 0 and 3.45 log MPN/100 ml-1 with five farms having acceptable levels according to the World Health Organization limit (3 log MPN/100 ml-1). Fresh produce samples on four farms (n = 65) harboured E. coli at low levels (<1 log CFU/g-1) except for one sample from kale, spring onion, green pepper, onion, and two tomato samples, which exceeded international acceptable limits (100 CFU/g-1). Only one baby carrot fresh produce sample tested positive for Salmonella spp. Of the 224 samples, E. coli isolates were identified in 40% (n = 90) of all water, soil, and fresh produce types after enrichment. Additionally, the DNA fingerprints of E. coli isolates from the water-soil-plant nexus of each respective farm clustered together at high similarity values (>90%), with all phenotypically characterized as multidrug-resistant. CONCLUSIONS The clustering of E. coli isolated throughout the water-soil-plant nexus, implicated irrigation water in fresh produce contamination. Highlighting the importance of complying with irrigation water microbiological quality guidelines to limit the spread of potential foodborne pathogens throughout the fresh produce supply chain.
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Affiliation(s)
- Sheldon A Viviers
- Department of Plant and Soil Sciences, University of Pretoria, Hatfield, Pretoria 0001, South Africa
- Department of Science and Innovation-National Research Foundation Centre of Excellence in Food Security, University of Pretoria, Hatfield, Pretoria 0028, South Africa
| | - Loandi Richter
- Department of Plant and Soil Sciences, University of Pretoria, Hatfield, Pretoria 0001, South Africa
- Department of Science and Innovation-National Research Foundation Centre of Excellence in Food Security, University of Pretoria, Hatfield, Pretoria 0028, South Africa
| | - Erika M du Plessis
- Department of Plant and Soil Sciences, University of Pretoria, Hatfield, Pretoria 0001, South Africa
- Department of Science and Innovation-National Research Foundation Centre of Excellence in Food Security, University of Pretoria, Hatfield, Pretoria 0028, South Africa
| | - Lise Korsten
- Department of Plant and Soil Sciences, University of Pretoria, Hatfield, Pretoria 0001, South Africa
- Department of Science and Innovation-National Research Foundation Centre of Excellence in Food Security, University of Pretoria, Hatfield, Pretoria 0028, South Africa
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Jermann N, Krusche B, Metag V, Afzal F, Badea M, Beck R, Bielefeldt P, Bieling J, Biroth M, Blanke E, Borisov N, Bornstein M, Brinkmann KT, Ciupka S, Crede V, Dolzhikov A, Drexler P, Dutz H, Elsner D, Fedorov A, Frommberger F, Gardner S, Ghosal D, Goertz S, Gorodnov I, Grüner M, Hammann C, Hartmann J, Hillert W, Hoffmeister P, Honisch C, Jude TC, Kalischewski F, Ketzer B, Klassen P, Klein F, Klempt E, Knaust J, Kolanus N, Kreit J, Krönert P, Lang M, Lazarev AB, Livingston K, Lutterer S, Mahlberg P, Meier C, Meyer W, Mitlasoczki B, Müllers J, Nanova M, Neganov A, Nikonov K, Noël JF, Ostrick M, Ottnad J, Otto B, Penman G, Poller T, Proft D, Reicherz G, Reinartz N, Richter L, Runkel S, Salisbury B, Sarantsev AV, Schaab D, Schmidt C, Schmieden H, Schultes J, Seifen T, Spieker K, Stausberg N, Steinacher M, Taubert F, Thiel A, Thoma U, Thomas A, Urban M, Urff G, Usov Y, van Pee H, Wang YC, Wendel C, Wiedner U, Wunderlich Y. Measurement of polarization observables T, P, and H in π0 and η photoproduction off quasi-free nucleons. Eur Phys J A Hadron Nucl 2023; 59:232. [PMID: 37860634 PMCID: PMC10582157 DOI: 10.1140/epja/s10050-023-01134-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 09/21/2023] [Indexed: 10/21/2023]
Abstract
The target asymmetry T, recoil asymmetry P, and beam-target double polarization observable H were determined in exclusive π 0 and η photoproduction off quasi-free protons and, for the first time, off quasi-free neutrons. The experiment was performed at the electron stretcher accelerator ELSA in Bonn, Germany, with the Crystal Barrel/TAPS detector setup, using a linearly polarized photon beam and a transversely polarized deuterated butanol target. Effects from the Fermi motion of the nucleons within deuterium were removed by a full kinematic reconstruction of the final state invariant mass. A comparison of the data obtained on the proton and on the neutron provides new insight into the isospin structure of the electromagnetic excitation of the nucleon. Earlier measurements of polarization observables in the γ p → π 0 p and γ p → η p reactions are confirmed. The data obtained on the neutron are of particular relevance for clarifying the origin of the narrow structure in the η n system at W = 1.68 GeV . A comparison with recent partial wave analyses favors the interpretation of this structure as arising from interference of the S 11 ( 1535 ) and S 11 ( 1650 ) resonances within the S 11 -partial wave.
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Affiliation(s)
- N. Jermann
- Department of Physics, University of Basel, Basel, Switzerland
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - B. Krusche
- Department of Physics, University of Basel, Basel, Switzerland
| | - V. Metag
- II. Physikalisches Institut, University of Giessen, Giessen, Germany
| | - F. Afzal
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - M. Badea
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - R. Beck
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - P. Bielefeldt
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - J. Bieling
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - M. Biroth
- Institut für Kernphysik, University of Mainz, Mainz, Germany
| | - E. Blanke
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - N. Borisov
- Joint Institute for Nuclear Research, Dubna, Russia
| | - M. Bornstein
- Physikalisches Institut, University of Bonn, Bonn, Germany
| | - K.-T. Brinkmann
- II. Physikalisches Institut, University of Giessen, Giessen, Germany
| | - S. Ciupka
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - V. Crede
- Department of Physics, Florida State University, Tallahassee, USA
| | - A. Dolzhikov
- Joint Institute for Nuclear Research, Dubna, Russia
| | - P. Drexler
- Institut für Kernphysik, University of Mainz, Mainz, Germany
| | - H. Dutz
- Physikalisches Institut, University of Bonn, Bonn, Germany
| | - D. Elsner
- Physikalisches Institut, University of Bonn, Bonn, Germany
| | - A. Fedorov
- Joint Institute for Nuclear Research, Dubna, Russia
| | - F. Frommberger
- Physikalisches Institut, University of Bonn, Bonn, Germany
| | - S. Gardner
- SUPA School of Physics and Astronomy, University of Glasgow, Glasgow, UK
| | - D. Ghosal
- Department of Physics, University of Basel, Basel, Switzerland
- Present Address: resent address: University of Liverpool, Liverpool, UK
| | - S. Goertz
- Physikalisches Institut, University of Bonn, Bonn, Germany
| | - I. Gorodnov
- Joint Institute for Nuclear Research, Dubna, Russia
| | - M. Grüner
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - C. Hammann
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - J. Hartmann
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - W. Hillert
- Physikalisches Institut, University of Bonn, Bonn, Germany
- Present Address: resent address: University of Hamburg, Hamburg, Germany
| | - P. Hoffmeister
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - C. Honisch
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - T. C. Jude
- Physikalisches Institut, University of Bonn, Bonn, Germany
| | - F. Kalischewski
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - B. Ketzer
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - P. Klassen
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - F. Klein
- Physikalisches Institut, University of Bonn, Bonn, Germany
| | - E. Klempt
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - J. Knaust
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - N. Kolanus
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - J. Kreit
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - P. Krönert
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - M. Lang
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | | | - K. Livingston
- SUPA School of Physics and Astronomy, University of Glasgow, Glasgow, UK
| | - S. Lutterer
- Department of Physics, University of Basel, Basel, Switzerland
- Present Address: resent address: Ruhr University Bochum, Bochum, Germany
| | - P. Mahlberg
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - C. Meier
- Department of Physics, University of Basel, Basel, Switzerland
| | - W. Meyer
- Institut für Experimentalphysik I, Ruhr University Bochum, Bochum, Germany
| | - B. Mitlasoczki
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - J. Müllers
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - M. Nanova
- II. Physikalisches Institut, University of Giessen, Giessen, Germany
| | - A. Neganov
- Joint Institute for Nuclear Research, Dubna, Russia
| | - K. Nikonov
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - J. F. Noël
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - M. Ostrick
- Institut für Kernphysik, University of Mainz, Mainz, Germany
| | - J. Ottnad
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - B. Otto
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - G. Penman
- SUPA School of Physics and Astronomy, University of Glasgow, Glasgow, UK
| | - T. Poller
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - D. Proft
- Physikalisches Institut, University of Bonn, Bonn, Germany
| | - G. Reicherz
- Institut für Experimentalphysik I, Ruhr University Bochum, Bochum, Germany
| | - N. Reinartz
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - L. Richter
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - S. Runkel
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
- Physikalisches Institut, University of Bonn, Bonn, Germany
| | - B. Salisbury
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - A. V. Sarantsev
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - D. Schaab
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - C. Schmidt
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - H. Schmieden
- Physikalisches Institut, University of Bonn, Bonn, Germany
| | - J. Schultes
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - T. Seifen
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - K. Spieker
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - N. Stausberg
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - M. Steinacher
- Department of Physics, University of Basel, Basel, Switzerland
| | - F. Taubert
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - A. Thiel
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - U. Thoma
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - A. Thomas
- Institut für Kernphysik, University of Mainz, Mainz, Germany
| | - M. Urban
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - G. Urff
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - Y. Usov
- Joint Institute for Nuclear Research, Dubna, Russia
| | - H. van Pee
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - Y. C. Wang
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - C. Wendel
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - U. Wiedner
- Institut für Experimentalphysik I, Ruhr University Bochum, Bochum, Germany
| | - Y. Wunderlich
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - CBELSA/TAPS Collaboration
- Department of Physics, University of Basel, Basel, Switzerland
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
- II. Physikalisches Institut, University of Giessen, Giessen, Germany
- Institut für Kernphysik, University of Mainz, Mainz, Germany
- Joint Institute for Nuclear Research, Dubna, Russia
- Department of Physics, Florida State University, Tallahassee, USA
- Physikalisches Institut, University of Bonn, Bonn, Germany
- SUPA School of Physics and Astronomy, University of Glasgow, Glasgow, UK
- Institut für Experimentalphysik I, Ruhr University Bochum, Bochum, Germany
- Present Address: resent address: University of Liverpool, Liverpool, UK
- Present Address: resent address: University of Hamburg, Hamburg, Germany
- Present Address: resent address: Ruhr University Bochum, Bochum, Germany
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Richter L, Du Plessis EM, Duvenage S, Korsten L. Prevalence of extended-spectrum β-lactamase producing Enterobacterales in Africa's water-plant-food interface: A meta-analysis (2010–2022). Front Sustain Food Syst 2023. [DOI: 10.3389/fsufs.2023.1106082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023] Open
Abstract
BackgroundMultidrug-resistant extended-spectrum β-lactamase (ESBL)-producing Enterobacterales is regarded as a critical health issue, yet, surveillance in the water-plant-food interface remains low, especially in Africa.ObjectivesThe objective of the study was to elucidate the distribution and prevalence of antimicrobial resistance in clinically significant members of the Enterobacterales order isolated from the water-plant-food interface in Africa.MethodsA literature search was conducted using six online databases according to the PRISMA guidelines. All available published studies involving phenotypic and genotypic characterization of ESBL-producing Enterobacterales from water, fresh produce or soil in Africa were considered eligible. Identification and characterization methods used as well as a network analysis according to the isolation source and publication year were summarized. Analysis of Escherichia coli, Salmonella spp. and Klebsiella pneumoniae included the calculation of the multiple antibiotic resistance (MAR) index according to isolation sources and statistical analysis was performed using RStudio.ResultsOverall, 51 studies were included for further investigation. Twelve African countries were represented, with environmental AMR surveillance studies predominantly conducted in South Africa. In 76.47% of the studies, occurrence of antimicrobial resistant bacteria was investigated in irrigation water samples, while 50.98% of the studies included fresh produce samples. Analysis of bacterial phenotypic antimicrobial resistance profiles were reported in 94.12% of the studies, with the disk diffusion method predominantly used. When investigating the MAR indexes of the characterized Escherichia coli, Klebsiella pneumoniae and Salmonella spp., from different sources (water, fresh produce or soil), no significant differences were seen across the countries. The only genetic determinant identified using PCR detection in all the studies was the blaCTX − M resistance gene. Only four studies used whole genome sequence analysis for molecular isolate characterization.DiscussionGlobally, AMR surveillance programmes recognize ESBL- and carbapenemase-producing Enterobacterales as vectors of great importance in AMR gene dissemination. However, in low- and middle-income countries, such as those in Africa, challenges to implementing effective and sustainable AMR surveillance programmes remain. This review emphasizes the need for improved surveillance, standardized methods and documentation of resistance gene dissemination across the farm-to-fork continuum in Africa.
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Pauge S, Surmann B, Züger A, Mathies V, Richter L, Mehlis K, Ernst T, Greiner W, Menold N, Winkler E. 1323P Towards the development of a German instrument to measure financial effects of a tumor disease: First results. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.1456] [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: 11/16/2022] Open
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Ding L, Zhou R, Yuan Y, Yang H, Li J, Yu T, Liu C, Wang J, Li S, Gao H, Deng Z, Li N, Wang Z, Gong Z, Liu G, Xie J, Wang S, Rong Z, Deng D, Wang X, Han S, Wan W, Richter L, Huang L, Gou S, Liu Z, Yu H, Jia Y, Chen B, Dang Z, Zhang K, Li L, He X, Liu S, Di K. A 2-year locomotive exploration and scientific investigation of the lunar farside by the Yutu-2 rover. Sci Robot 2022; 7:eabj6660. [PMID: 35044796 DOI: 10.1126/scirobotics.abj6660] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
The lunar nearside has been investigated by many uncrewed and crewed missions, but the farside of the Moon remains poorly known. Lunar farside exploration is challenging because maneuvering rovers with efficient locomotion in harsh extraterrestrial environment is necessary to explore geological characteristics of scientific interest. Chang'E-4 mission successfully targeted the Moon's farside and deployed a teleoperated rover (Yutu-2) to explore inside the Von Kármán crater, conveying rich information regarding regolith, craters, and rocks. Here, we report mobile exploration on the lunar farside with Yutu-2 over the initial 2 years. During its journey, Yutu-2 has experienced varying degrees of mild slip and skid, indicating that the terrain is relatively flat at large scales but scattered with local gentle slopes. Cloddy soil sticking on its wheels implies a greater cohesion of the lunar soil than encountered at other lunar landing sites. Further identification results indicate that the regolith resembles dry sand and sandy loam on Earth in bearing properties, demonstrating greater bearing strength than that identified during the Apollo missions. In sharp contrast to the sparsity of rocks along the traverse route, small fresh craters with unilateral moldable ejecta are abundant, and some of them contain high-reflectance materials at the bottom, suggestive of secondary impact events. These findings hint at notable differences in the surface geology between the lunar farside and nearside. Experience gained with Yutu-2 improves the understanding of the farside of the Moon, which, in return, may lead to locomotion with improved efficiency and larger range.
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Affiliation(s)
- L Ding
- State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150080, China
| | - R Zhou
- State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150080, China
| | - Y Yuan
- State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150080, China
| | - H Yang
- State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150080, China
| | - J Li
- Beijing Aerospace Control Center, Beijing 100094, China
| | - T Yu
- Beijing Aerospace Control Center, Beijing 100094, China
| | - C Liu
- Beijing Aerospace Control Center, Beijing 100094, China.,Key Laboratory of Science and Technology on Aerospace Flight Dynamics, Beijing 100094, China
| | - J Wang
- Beijing Aerospace Control Center, Beijing 100094, China
| | - S Li
- State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150080, China
| | - H Gao
- State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150080, China
| | - Z Deng
- State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150080, China
| | - N Li
- State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150080, China
| | - Z Wang
- State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150080, China
| | - Z Gong
- State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150080, China
| | - G Liu
- Department of Aerospace Engineering, Ryerson University, Toronto, ON M5B 2K3, Canada
| | - J Xie
- Beijing Aerospace Control Center, Beijing 100094, China
| | - S Wang
- Beijing Aerospace Control Center, Beijing 100094, China
| | - Z Rong
- Beijing Aerospace Control Center, Beijing 100094, China
| | - D Deng
- Beijing Aerospace Control Center, Beijing 100094, China
| | - X Wang
- Beijing Aerospace Control Center, Beijing 100094, China.,Key Laboratory of Science and Technology on Aerospace Flight Dynamics, Beijing 100094, China
| | - S Han
- Beijing Aerospace Control Center, Beijing 100094, China
| | - W Wan
- State Key Laboratory of Remote Sensing Science, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100101, China
| | - L Richter
- Large Space Structures GmbH, Hauptstrasse 1, D-85386 Eching, Germany
| | - L Huang
- State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150080, China
| | - S Gou
- State Key Laboratory of Remote Sensing Science, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100101, China
| | - Z Liu
- State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150080, China
| | - H Yu
- State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150080, China
| | - Y Jia
- China Academy of Space Technology, Beijing 100094, China
| | - B Chen
- China Academy of Space Technology, Beijing 100094, China
| | - Z Dang
- China Academy of Space Technology, Beijing 100094, China
| | - K Zhang
- Beijing Aerospace Control Center, Beijing 100094, China
| | - L Li
- Beijing Aerospace Control Center, Beijing 100094, China
| | - X He
- Beijing Aerospace Control Center, Beijing 100094, China
| | - S Liu
- Beijing Aerospace Control Center, Beijing 100094, China
| | - K Di
- State Key Laboratory of Remote Sensing Science, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100101, China
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Richter L, du Plessis EM, Duvenage S, Korsten L. Microbiological safety of spinach throughout commercial supply chains in Gauteng Province, South Africa and characterization of isolated multidrug-resistant Escherichia coli. J Appl Microbiol 2021; 132:2389-2409. [PMID: 34767685 DOI: 10.1111/jam.15357] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 09/28/2021] [Accepted: 11/02/2021] [Indexed: 01/02/2023]
Abstract
AIM To investigate the microbiological quality, potential foodborne pathogen presence, and to phenotypically (antimicrobial resistance [AMR] profiles) and genotypically (DNA fingerprints and diarrhoeagenic genes) characterize Escherichia coli isolated throughout spinach production systems from farm-to-sale. METHODS AND RESULTS Samples (n = 288) were collected from two commercial supply chains using either river or borehole irrigation water. E. coli was enumerated throughout the chain where river water was directly used for overhead irrigation at levels between 0.00 and 3.22 log colony forming unit (CFU) g-1 . Following enrichment, isolation and matrix-assisted laser desorption ionization time-of-flight mass spectrometry identification, E. coli was isolated from 22.57% (n = 65/288) of all samples. Salmonella spp. were isolated from 3% (n = 9/288) of river and irrigation water samples on one farm, and no Listeria monocytogenes was detected throughout the study. Of the 80 characterized E. coli isolates, one harboured the stx2 virulence gene, while 43.75% (n = 35) were multidrug resistant. Overall, 26.30% of the multidrug-resistant E. coli isolates were from production scenario one that used river irrigation water, and 17.50% from the second production scenario that used borehole irrigation water. A greater percentage of resistance phenotypes were from water E. coli isolates (52.50%), than isolates from spinach (37.50%). E. coli isolates from spinach and irrigation water clustered together at high similarity values (>90%) using enterobacterial repetitive intergenic consensus-polymerase chan reaction analysis. CONCLUSIONS This study reported the presence of multidrug-resistant environmental E. coli throughout spinach production from farm, during processing and up to retail. Furthermore, the similarity of multi-drug resistant E. coli isolates suggests transfer from irrigation water to spinach in both scenarios, reiterating that irrigation water for vegetables consumed raw, should comply with standardized microbiological safety guidelines. SIGNIFICANCE AND IMPACT OF STUDY Multidrug-resistant E. coli presence throughout spinach production emphasizes the necessity of increased surveillance of AMR in fresh produce and the production environment within a One Health paradigm to develop AMR mitigation strategies.
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Affiliation(s)
- Loandi Richter
- Department of Plant and Soil Sciences, Faculty of Natural and Agricultural Sciences, University of Pretoria, Pretoria, South Africa.,Department of Science and Innovation, National Research Foundation Centre of Excellence in Food Security, Pretoria, South Africa
| | - Erika M du Plessis
- Department of Plant and Soil Sciences, Faculty of Natural and Agricultural Sciences, University of Pretoria, Pretoria, South Africa.,Department of Science and Innovation, National Research Foundation Centre of Excellence in Food Security, Pretoria, South Africa
| | - Stacey Duvenage
- Department of Plant and Soil Sciences, Faculty of Natural and Agricultural Sciences, University of Pretoria, Pretoria, South Africa.,Department of Science and Innovation, National Research Foundation Centre of Excellence in Food Security, Pretoria, South Africa
| | - Lise Korsten
- Department of Plant and Soil Sciences, Faculty of Natural and Agricultural Sciences, University of Pretoria, Pretoria, South Africa.,Department of Science and Innovation, National Research Foundation Centre of Excellence in Food Security, Pretoria, South Africa
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Richter L, du Plessis EM, Duvenage S, Allam M, Ismail A, Korsten L. Whole Genome Sequencing of Extended-Spectrum- and AmpC- β-Lactamase-Positive Enterobacterales Isolated From Spinach Production in Gauteng Province, South Africa. Front Microbiol 2021; 12:734649. [PMID: 34659162 PMCID: PMC8517129 DOI: 10.3389/fmicb.2021.734649] [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] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Accepted: 09/01/2021] [Indexed: 02/06/2023] Open
Abstract
The increasing occurrence of multidrug-resistant (MDR) extended-spectrum β-lactamase- (ESBL) and/or AmpC β-lactamase- (AmpC) producing Enterobacterales in irrigation water and associated irrigated fresh produce represents risks related to the environment, food safety, and public health. In South Africa, information about the presence of ESBL/AmpC-producing Enterobacterales from non-clinical sources is limited, particularly in the water-plant-food interface. This study aimed to characterize 19 selected MDR ESBL/AmpC-producing Escherichia coli (n=3), Klebsiella pneumoniae (n=5), Serratia fonticola (n=10), and Salmonella enterica (n=1) isolates from spinach and associated irrigation water samples from two commercial spinach production systems within South Africa, using whole genome sequencing (WGS). Antibiotic resistance genes potentially encoding resistance to eight different classes were present, with bla CTX-M-15 being the dominant ESBL encoding gene and bla ACT-types being the dominant AmpC encoding gene detected. A greater number of resistance genes across more antibiotic classes were seen in all the K. pneumoniae strains, compared to the other genera tested. From one farm, bla CTX-M-15-positive K. pneumoniae strains of the same sequence type 985 (ST 985) were present in spinach at harvest and retail samples after processing, suggesting successful persistence of these MDR strains. In addition, ESBL-producing K. pneumoniae ST15, an emerging high-risk clone causing nosocomical outbreaks worldwide, was isolated from irrigation water. Known resistance plasmid replicon types of Enterobacterales including IncFIB, IncFIA, IncFII, IncB/O, and IncHI1B were observed in all strains following analysis with PlasmidFinder. However, bla CTX-M-15 was the only β-lactamase resistance gene associated with plasmids (IncFII and IncFIB) in K. pneumoniae (n=4) strains. In one E. coli and five K. pneumoniae strains, integron In191 was observed. Relevant similarities to human pathogens were predicted with PathogenFinder for all 19 strains, with a confidence of 0.635-0.721 in S. fonticola, 0.852-0.931 in E. coli, 0.796-0.899 in K. pneumoniae, and 0.939 in the S. enterica strain. The presence of MDR ESBL/AmpC-producing E. coli, K. pneumoniae, S. fonticola, and S. enterica with similarities to human pathogens in the agricultural production systems reflects environmental and food contamination mediated by anthropogenic activities, contributing to the spread of antibiotic resistance genes.
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Affiliation(s)
- Loandi Richter
- Department of Plant and Soil Sciences, University of Pretoria, Pretoria, South Africa
- Department of Science and Innovation, National Research Foundation Centre of Excellence in Food Security, Pretoria, South Africa
| | - Erika M. du Plessis
- Department of Plant and Soil Sciences, University of Pretoria, Pretoria, South Africa
- Department of Science and Innovation, National Research Foundation Centre of Excellence in Food Security, Pretoria, South Africa
| | - Stacey Duvenage
- Department of Plant and Soil Sciences, University of Pretoria, Pretoria, South Africa
- Department of Science and Innovation, National Research Foundation Centre of Excellence in Food Security, Pretoria, South Africa
| | - Mushal Allam
- Sequencing Core Facility, National Institute for Communicable Diseases, National Health Laboratory Service, Johannesburg, South Africa
| | - Arshad Ismail
- Sequencing Core Facility, National Institute for Communicable Diseases, National Health Laboratory Service, Johannesburg, South Africa
| | - Lise Korsten
- Department of Plant and Soil Sciences, University of Pretoria, Pretoria, South Africa
- Department of Science and Innovation, National Research Foundation Centre of Excellence in Food Security, Pretoria, South Africa
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Estel K, Weber G, Fellmer F, Richter L, Tsitsilonis S, Willy C, Back DA. The use of online video consultations in the aftercare of orthopedic patients: a prospective case-control study. BMC Musculoskelet Disord 2021; 22:774. [PMID: 34511106 PMCID: PMC8435151 DOI: 10.1186/s12891-021-04653-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Accepted: 08/11/2021] [Indexed: 11/30/2022] Open
Abstract
Background Video consultations have proven to be an efficient source of support for patient-doctor interactions and have become increasingly used in orthopedics, especially during the COVID-19 pandemic. This study analyzed both patients’ and doctors’ acceptance of an orthopedic telemedical consultation (OTC) and compared the results of OTC examinations to the results of live consultation (LC) to identify discrepancies. Methods The study was carried out in an orthopedic department of a German hospital between 2019 and 2020. After written informed consent was obtained, patients voluntarily presented for follow-up by OTC and LC. The experience with and attitudes toward OTC among both patients and doctors was evaluated (using Likert scale-scored and open questions, 26 to 28 items). The results of the OTC and LC examinations were compared using a 12-item checklist. The data were analyzed by quantitative and qualitative statistics. Results A total of 53 patients were included, each of whom completed an OTC and an LC. The OTC was rated as pleasant, and the experience was rated as very satisfying (average rating on a 5-point Likert scale, with 1 indicating strong agreement: doctors: 1.2; patients: 1.3). Various technical and organizational challenges were identified. Compared to LC, OTC showed no significant differences in patient history or in inspection, palpation, or active range of motion results. Only for the functional or passive joint assessment did LC show significantly higher suitability (p < 0.05) than OTC. Recommendations for further procedures did not differ significantly between OTC and LC. Conclusions Because of the high acceptance and the objective benefits of OTC and the similarity of clinical results with LC, OTC is recommendable for orthopedic follow-up examinations. To better assess joint functionality, meaningful digital alternatives for established examination methods should be further investigated. Supplementary Information The online version contains supplementary material available at 10.1186/s12891-021-04653-3.
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Affiliation(s)
- K Estel
- Department for Traumatology and Orthopedics, Bundeswehr Hospital Berlin, Scharnhorststrasse 13, 10115, Berlin, Germany
| | - G Weber
- Department for Traumatology and Orthopedics, Bundeswehr Hospital Berlin, Scharnhorststrasse 13, 10115, Berlin, Germany
| | - F Fellmer
- Department for Traumatology and Orthopedics, Bundeswehr Hospital Berlin, Scharnhorststrasse 13, 10115, Berlin, Germany
| | - L Richter
- Department for Traumatology and Orthopedics, Bundeswehr Hospital Berlin, Scharnhorststrasse 13, 10115, Berlin, Germany.,Medical Faculty, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany
| | - S Tsitsilonis
- Center for Musculoskeletal Surgery, Charité - Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany
| | - C Willy
- Department for Traumatology and Orthopedics, Bundeswehr Hospital Berlin, Scharnhorststrasse 13, 10115, Berlin, Germany
| | - D A Back
- Department for Traumatology and Orthopedics, Bundeswehr Hospital Berlin, Scharnhorststrasse 13, 10115, Berlin, Germany. .,Dieter Scheffner Center for Medical Education and Educational Research, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany.
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Wagner R, Sonnek G, Wüstneck R, Jänicke A, Herbst M, Richter L, Engelbrecht L. Interfacial behaviour of silicone surfactants. TENSIDE SURFACT DET 2021. [DOI: 10.1515/tsd-1994-310518] [Citation(s) in RCA: 4] [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: 11/15/2022]
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Graier T, Salmhofer W, Jonak C, Weger W, Kölli C, Gruber B, Sator PG, Prillinger K, Mlynek A, Schütz-Bergmayr M, Richter L, Ratzinger G, Painsi C, Selhofer S, Häring N, Wippel-Slupetzky K, Skvara H, Trattner H, Tanew A, Inzinger M, Tatarski R, Bangert C, Ellersdorfer C, Lichem R, Gruber-Wackernagel A, Hofer A, Legat F, Schmiedberger E, Strohal R, Lange-Asschenfeldt B, Schmuth M, Vujic I, Hoetzenecker W, Trautinger F, Saxinger W, Müllegger R, Quehenberger F, Wolf P. Biologic drug survival rates in the era of anti-interleukin-17 antibodies: a time-period-adjusted registry analysis. Br J Dermatol 2020; 184:1094-1105. [PMID: 33289075 PMCID: PMC8248155 DOI: 10.1111/bjd.19701] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/28/2020] [Indexed: 12/22/2022]
Abstract
Background Drug survival rates reflect efficacy and safety and may be influenced by the availability of alternative treatment options. Little is known about time‐dependent drug survival in psoriasis and the effect of increasing numbers of biologic treatment options. Objectives To determine whether drug survival is influenced by the availability of treatment options and by factors such as gender, psoriatic arthritis or previous biologic treatment. Methods This observational, retrospective, multicentre cohort study analysed data from patients registered in the Austrian Psoriasis Registry (PsoRA) who were treated with biologics between 1 January 2015 and 30 November 2019. Results A total of 1572 patients who received 1848 treatment cycles were included in this analysis. The highest long‐term Psoriasis Area and Severity Index improvement was observed after treatment with ixekizumab, followed by ustekinumab and secukinumab, adalimumab and etanercept. Overall, ustekinumab surpassed all other biologics in drug survival up to 48 months. However, when adjusted for biologic naïvety, its superiority vanished and drug survival rates were similar for ixekizumab (91·6%), secukinumab (90·2%) and ustekinumab (92·8%), all of them superior to adalimumab (76·5%) and etanercept (71·9%) at 12 months and beyond. Besides biologic non‐naïvety (2·10, P < 0·001), the introduction of a new drug such as secukinumab or ixekizumab (relative hazard ratio 1·6, P = 0·001) and female gender (1·50, P = 0·019) increased the risk of treatment discontinuation overall, whereas psoriatic arthritis did not (1·12, P = 0·21). Conclusions The time‐dependent availability of drugs should be considered when analysing and comparing drug survival. Previous biologic exposure significantly influences drug survival. Women are more likely to stop treatment.
What is already known about this topic?
Female gender and previous biologic exposure have been discussed as predictors for decreased drug survival in patients with psoriasis, but it remains unknown whether a time‐dependent increased availability of treatment options alters biologic drug survival.
What does this study add?
The increased availability of alternative biologic treatments over time leads to an elevated risk for treatment discontinuation overall; therefore, drug survival analysis has to be time adjusted. Moreover, the study reveals that the impact of previous biologic treatment on drug survival is tremendous and confirms worse drug survival in female patients.
Linked Comment: Gniadecki. Br J Dermatol 2021; 184:996–997.
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Affiliation(s)
- T Graier
- Department of Dermatology and Venereology, Medical University of Graz, Graz, Austria
| | - W Salmhofer
- Department of Dermatology and Venereology, Medical University of Graz, Graz, Austria
| | - C Jonak
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - W Weger
- Department of Dermatology and Venereology, Medical University of Graz, Graz, Austria
| | - C Kölli
- Department of Dermatology and Venereology, State Hospital, Wiener Neustadt, Austria
| | - B Gruber
- Department of Dermatology and Venereology, Hospital of Wels-Grieskirchen, Wels-Grieskirchen, Austria
| | - P G Sator
- Department of Dermatology, Hietzing Hospital, Vienna, Austria
| | - K Prillinger
- Department of Dermatology and Venereology, University Hospital St Pölten, St Pölten, Austria
| | - A Mlynek
- Department of Dermatology, Hospital of Elisabethinen, Linz, Austria
| | - M Schütz-Bergmayr
- Department of Dermatology and Venereology, Kepler University Hospital, Linz, Austria
| | - L Richter
- Department of Dermatology and Venereology, State Hospital of Vienna Rudolfstiftung, Vienna, Austria
| | - G Ratzinger
- Department of Dermatology, Venereology and Allergology, Medical University of Innsbruck, Innsbruck, Austria
| | - C Painsi
- Department of Dermatology and Venereology, State Hospital, Klagenfurt, Austria
| | - S Selhofer
- Department of Dermatology and Allergology, Paracelsus Medical University, Salzburg, Austria
| | - N Häring
- Department of Dermatology and Venereology, Federal Academic Teaching Hospital, Feldkirch, Austria
| | | | - H Skvara
- Department of Dermatology and Venereology, State Hospital, Wiener Neustadt, Austria
| | - H Trattner
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - A Tanew
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - M Inzinger
- Department of Dermatology and Venereology, Medical University of Graz, Graz, Austria
| | - R Tatarski
- Department of Dermatology and Allergology, Paracelsus Medical University, Salzburg, Austria
| | - C Bangert
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - C Ellersdorfer
- Department of Dermatology and Venereology, State Hospital of Vienna Rudolfstiftung, Vienna, Austria
| | - R Lichem
- Department of Dermatology and Venereology, Medical University of Graz, Graz, Austria
| | - A Gruber-Wackernagel
- Department of Dermatology and Venereology, Medical University of Graz, Graz, Austria
| | - A Hofer
- Department of Dermatology and Venereology, Medical University of Graz, Graz, Austria
| | - F Legat
- Department of Dermatology and Venereology, Medical University of Graz, Graz, Austria
| | - E Schmiedberger
- Institute for Medical Informatics, Statistics, and Documentation, Medical University of Graz, Graz, Austria
| | - R Strohal
- Department of Dermatology and Venereology, Federal Academic Teaching Hospital, Feldkirch, Austria
| | | | - M Schmuth
- Department of Dermatology, Venereology and Allergology, Medical University of Innsbruck, Innsbruck, Austria
| | - I Vujic
- Department of Dermatology and Venereology, State Hospital of Vienna Rudolfstiftung, Vienna, Austria
| | - W Hoetzenecker
- Department of Dermatology and Venereology, Kepler University Hospital, Linz, Austria
| | - F Trautinger
- Department of Dermatology and Venereology, University Hospital St Pölten, St Pölten, Austria
| | - W Saxinger
- Department of Dermatology and Venereology, Hospital of Wels-Grieskirchen, Wels-Grieskirchen, Austria
| | - R Müllegger
- Department of Dermatology and Venereology, State Hospital, Wiener Neustadt, Austria
| | - F Quehenberger
- Institute for Medical Informatics, Statistics, and Documentation, Medical University of Graz, Graz, Austria
| | - P Wolf
- Department of Dermatology and Venereology, Medical University of Graz, Graz, Austria
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Richter L, Plessis ED, Duvenage S, Korsten L. High prevalence of multidrug resistant Escherichia coli isolated from fresh vegetables sold by selected formal and informal traders in the most densely populated Province of South Africa. J Food Sci 2020; 86:161-168. [PMID: 33294974 DOI: 10.1111/1750-3841.15534] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 10/22/2020] [Accepted: 10/26/2020] [Indexed: 01/26/2023]
Abstract
Contaminated fresh produce has increasingly been implicated in foodborne disease outbreaks. As microbiological safety surveillance in South Africa is limited, a total of 545 vegetable samples (spinach, tomato, lettuce, cucumber, and green beans) were purchased from retailers, street traders, trolley vendors and farmers' markets. Escherichia coli, coliforms and Enterobacteriaceae were enumerated and the prevalence of Escherichia coli, Salmonella spp. and Listeria monocytogenes determined. E. coli isolates were characterized phenotypically (antibiotic resistance) and genotypically (diarrheagenic virulence genes). Coliforms, E. coli and Enterobacteriaceae counts were mostly not significantly different between formal and informal markets, with exceptions noted on occasion. When compared to international standards, 90% to 98% tomatoes, 70% to 94% spinach, 82% cucumbers, 93% lettuce, and 80% green bean samples, had satisfactory (≤ 100 CFU/g) E. coli counts. Of the 545 vegetable samples analyzed, 14.86% (n = 81) harbored E. coli, predominantly from leafy green vegetables. Virulence genes (lt, st, bfpA, eagg, eaeA, stx1, stx2, and ipaH) were not detected in the E. coli isolates (n = 67) characterized, however 40.30% were multidrug-resistant. Resistance to aminoglycosides (neomycin, 73.13%; gentamycin, < 10%), penicillins (ampicillin, 38.81%; amoxicillin, 41.79%; augmentin, < 10%), sulfonamides (cotrimoxazole, 22.39%), tetracycline (19.4%), chloramphenicol (11.94%), cephalosporins (cefepime, 34.33%), and carbapenemases (imipenem, < 10%) were observed. This study highlights the need for continued surveillance of multidrug resistant foodborne pathogens in fresh produce retailed formally and informally for potential consumer health risks. PRACTICAL APPLICATION: The results indicate that the microbiological quality of different vegetables were similar per product type, regardless of being purchased from formal retailers or informal street traders, trolley vendors or farmers' markets. Although no pathogenic bacteria (diarrheagenic E. coli, Salmonella spp. or L. monocytogenes) were isolated, high levels of multidrug-resistance was observed in the generic E. coli isolates. These findings highlight the importance of microbiological quality surveillance of fresh produce in formal and informal markets, as these products can be a reservoir of multidrug resistant bacteria harboring antibiotic resistance and virulence genes, potentially impacting human health.
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Affiliation(s)
- Loandi Richter
- Department of Plant and Soil Sciences, University of Pretoria, Hatfield, Pretoria, 0001, South Africa.,Department of Science and Innovation, National Research Foundation Centre of Excellence in Food Security, Cape Town, South Africa
| | - Erika Du Plessis
- Department of Plant and Soil Sciences, University of Pretoria, Hatfield, Pretoria, 0001, South Africa
| | - Stacey Duvenage
- Department of Plant and Soil Sciences, University of Pretoria, Hatfield, Pretoria, 0001, South Africa.,Department of Science and Innovation, National Research Foundation Centre of Excellence in Food Security, Cape Town, South Africa
| | - Lise Korsten
- Department of Plant and Soil Sciences, University of Pretoria, Hatfield, Pretoria, 0001, South Africa.,Department of Science and Innovation, National Research Foundation Centre of Excellence in Food Security, Cape Town, South Africa
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Afzal F, Wunderlich Y, Anisovich AV, Bayadilov D, Beck R, Becker M, Blanke E, Brinkmann KT, Ciupka S, Crede V, Dieterle M, Dutz H, Elsner D, Friedrich S, Frommberger F, Gridnev A, Gottschall M, Grüner M, Gutz E, Hammann C, Hannappel J, Hartmann J, Hillert W, Hoff J, Hoffmeister P, Honisch C, Jude T, Kalinowsky H, Kalischewski F, Keshelashvili I, Klassen P, Klein F, Klempt E, Koop K, Kroenert P, Krusche B, Lang M, Lopatin I, Mahlberg P, Meißner UG, Messi F, Metag V, Meyer W, Mitlasóczki B, Müller J, Müllers J, Nanova M, Nikonov K, Nikonov V, Novinskiy V, Novotny R, Piontek D, Reicherz G, Richter L, Rönchen D, Rostomyan T, Salisbury B, Sarantsev A, Schaab D, Schmidt C, Schmieden H, Schultes J, Seifen T, Sokhoyan V, Sowa C, Spieker K, Stausberg N, Thiel A, Thoma U, Triffterer T, Urban M, Urff G, van Pee H, Walther D, Wendel C, Wiedner U, Wilson A, Winnebeck A, Witthauer L. Observation of the pη^{'} Cusp in the New Precise Beam Asymmetry Σ Data for γp→pη. Phys Rev Lett 2020; 125:152002. [PMID: 33095637 DOI: 10.1103/physrevlett.125.152002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 07/24/2020] [Accepted: 08/28/2020] [Indexed: 06/11/2023]
Abstract
Data on the beam asymmetry Σ in the photoproduction of η mesons off protons are reported for tagged photon energies from 1130 to 1790 MeV (mass range from W=1748 MeV to W=2045 MeV). The data cover the full solid angle that allows for a precise moment analysis. For the first time, a strong cusp effect in a polarization observable has been observed that is an effect of a branch-point singularity at the pη^{'} threshold [E_{γ}=1447 MeV (W=1896 MeV)]. The latest BnGa partial wave analysis includes the new beam asymmetry data and yields a strong indication for the N(1895)1/2^{-} nucleon resonance, demonstrating the importance of including all singularities for a correct determination of partial waves and resonance parameters.
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Affiliation(s)
- F Afzal
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - Y Wunderlich
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - A V Anisovich
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
- National Research Centre "Kurchatov Institute", Petersburg Nuclear Physics Institute, Gatchina, Russia
| | - D Bayadilov
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
- National Research Centre "Kurchatov Institute", Petersburg Nuclear Physics Institute, Gatchina, Russia
| | - R Beck
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - M Becker
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - E Blanke
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - K-Th Brinkmann
- II. Physikalisches Institut, Universität Giessen, Germany
| | - S Ciupka
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - V Crede
- Department of Physics, Florida State University, Tallahassee, Florida 32306, USA
| | - M Dieterle
- Physikalisches Institut, Universität Basel, Switzerland
| | - H Dutz
- Physikalisches Institut, Universität Bonn, Germany
| | - D Elsner
- Physikalisches Institut, Universität Bonn, Germany
| | - S Friedrich
- II. Physikalisches Institut, Universität Giessen, Germany
| | | | - A Gridnev
- National Research Centre "Kurchatov Institute", Petersburg Nuclear Physics Institute, Gatchina, Russia
| | - M Gottschall
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - M Grüner
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - E Gutz
- II. Physikalisches Institut, Universität Giessen, Germany
| | - C Hammann
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - J Hannappel
- Physikalisches Institut, Universität Bonn, Germany
| | - J Hartmann
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - W Hillert
- Physikalisches Institut, Universität Bonn, Germany
| | - J Hoff
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - P Hoffmeister
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - C Honisch
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - T Jude
- Physikalisches Institut, Universität Bonn, Germany
| | - H Kalinowsky
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - F Kalischewski
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | | | - P Klassen
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - F Klein
- Physikalisches Institut, Universität Bonn, Germany
| | - E Klempt
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - K Koop
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - P Kroenert
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - B Krusche
- Physikalisches Institut, Universität Basel, Switzerland
| | - M Lang
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - I Lopatin
- National Research Centre "Kurchatov Institute", Petersburg Nuclear Physics Institute, Gatchina, Russia
| | - P Mahlberg
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - U-G Meißner
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
- Institute for Advanced Simulation, Institut für Kernphysik and Jülich Center for Hadron Physics, Forschungszentrum Jülich, D-52425 Jülich, Germany
| | - F Messi
- Physikalisches Institut, Universität Bonn, Germany
| | - V Metag
- II. Physikalisches Institut, Universität Giessen, Germany
| | - W Meyer
- Institut für Experimentalphysik I, Ruhr Universität Bochum, Germany
| | - B Mitlasóczki
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - J Müller
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - J Müllers
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - M Nanova
- II. Physikalisches Institut, Universität Giessen, Germany
| | - K Nikonov
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
- National Research Centre "Kurchatov Institute", Petersburg Nuclear Physics Institute, Gatchina, Russia
| | - V Nikonov
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
- National Research Centre "Kurchatov Institute", Petersburg Nuclear Physics Institute, Gatchina, Russia
| | - V Novinskiy
- National Research Centre "Kurchatov Institute", Petersburg Nuclear Physics Institute, Gatchina, Russia
| | - R Novotny
- II. Physikalisches Institut, Universität Giessen, Germany
| | - D Piontek
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - G Reicherz
- Institut für Experimentalphysik I, Ruhr Universität Bochum, Germany
| | - L Richter
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - D Rönchen
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - T Rostomyan
- Physikalisches Institut, Universität Basel, Switzerland
| | - B Salisbury
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - A Sarantsev
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
- National Research Centre "Kurchatov Institute", Petersburg Nuclear Physics Institute, Gatchina, Russia
| | - D Schaab
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - C Schmidt
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - H Schmieden
- Physikalisches Institut, Universität Bonn, Germany
| | - J Schultes
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - T Seifen
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - V Sokhoyan
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - C Sowa
- Institut für Experimentalphysik I, Ruhr Universität Bochum, Germany
| | - K Spieker
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - N Stausberg
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - A Thiel
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - U Thoma
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - T Triffterer
- Institut für Experimentalphysik I, Ruhr Universität Bochum, Germany
| | - M Urban
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - G Urff
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - H van Pee
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - D Walther
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - Ch Wendel
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - U Wiedner
- Institut für Experimentalphysik I, Ruhr Universität Bochum, Germany
| | - A Wilson
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
- Department of Physics, Florida State University, Tallahassee, Florida 32306, USA
| | - A Winnebeck
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - L Witthauer
- Physikalisches Institut, Universität Basel, Switzerland
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Momberg DJ, Voth-Gaeddert LE, Ngandu BC, Richter L, May J, Norris SA, Said-Mohamed R. Water, sanitation, and hygiene (WASH) factors associated with growth between birth and 1 year of age in children in Soweto, South Africa: results from the Soweto Baby WASH study. J Water Health 2020; 18:798-819. [PMID: 33095202 DOI: 10.2166/wh.2020.085] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Interventions to reduce undernutrition and improve child growth have incorporated improved water, sanitation, and hygiene (WASH) as part of disease transmission prevention strategies. Knowledge gaps still exist, namely, when and which WASH factors are determinants for growth faltering, and when WASH interventions are most effective at improving growth. This study drew cross-sectional data from a longitudinal cohort study and used hierarchical regression analyses to assess associations between WASH factors: water index, sanitation, hygiene index, and growth: height-for-age (HAZ), weight-for-age (WAZ), weight-for-height (WHZ) at 1, 6, and 12 months postpartum among infants a priori born healthy in Soweto, Johannesburg. Household access to sanitation facilities that were not safely managed was associated with a decrease in HAZ scores at 1 month (β = -2.24) and 6 months (β = -0.96); a decrease in WAZ at 1 month (β = -1.21), 6 months (β = -1.57), and 12 months (β = -1.92); and finally, with WHZ scores at 12 months (β = -1.94). Counterintuitively, poorer scores on the hygiene index were associated with an increase at 1 month for both HAZ (β = 0.53) and WAZ (β = 0.44). Provision of safely managed sanitation at household and community levels may be required before improvements in growth-related outcomes are obtained.
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Affiliation(s)
- D J Momberg
- SAMRC/WITS Developmental Pathways for Health Research Unit, Department of Paediatrics and Child Health, School of Clinical Medicine, Faculty of Health Sciences, University of the Witwatersrand, 7 York Rd, Parktown 2193, Johannesburg, South Africa E-mail: ; DSI-NRF Centre of Excellence in Food Security, University of the Western Cape, Cape Town, South Africa
| | - L E Voth-Gaeddert
- SAMRC/WITS Developmental Pathways for Health Research Unit, Department of Paediatrics and Child Health, School of Clinical Medicine, Faculty of Health Sciences, University of the Witwatersrand, 7 York Rd, Parktown 2193, Johannesburg, South Africa E-mail:
| | - B C Ngandu
- SAMRC/WITS Developmental Pathways for Health Research Unit, Department of Paediatrics and Child Health, School of Clinical Medicine, Faculty of Health Sciences, University of the Witwatersrand, 7 York Rd, Parktown 2193, Johannesburg, South Africa E-mail:
| | - L Richter
- DSI-NRF Centre of Excellence in Human Development, University of the Witwatersrand, Johannesburg, South Africa
| | - J May
- DSI-NRF Centre of Excellence in Food Security, University of the Western Cape, Cape Town, South Africa
| | - S A Norris
- SAMRC/WITS Developmental Pathways for Health Research Unit, Department of Paediatrics and Child Health, School of Clinical Medicine, Faculty of Health Sciences, University of the Witwatersrand, 7 York Rd, Parktown 2193, Johannesburg, South Africa E-mail: ; DSI-NRF Centre of Excellence in Human Development, University of the Witwatersrand, Johannesburg, South Africa
| | - R Said-Mohamed
- SAMRC/WITS Developmental Pathways for Health Research Unit, Department of Paediatrics and Child Health, School of Clinical Medicine, Faculty of Health Sciences, University of the Witwatersrand, 7 York Rd, Parktown 2193, Johannesburg, South Africa E-mail: ; DSI-NRF Centre of Excellence in Food Security, University of the Western Cape, Cape Town, South Africa; DSI-NRF Centre of Excellence in Human Development, University of the Witwatersrand, Johannesburg, South Africa; Department of Archaeology, Biological Anthropology, University of Cambridge, Cambridge, UK
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18
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Richter L, du Plessis EM, Duvenage S, Korsten L. Occurrence, Phenotypic and Molecular Characterization of Extended-Spectrum- and AmpC- β-Lactamase Producing Enterobacteriaceae Isolated From Selected Commercial Spinach Supply Chains in South Africa. Front Microbiol 2020; 11:638. [PMID: 32351477 PMCID: PMC7176360 DOI: 10.3389/fmicb.2020.00638] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [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: 07/29/2019] [Accepted: 03/20/2020] [Indexed: 12/11/2022] Open
Abstract
The increasing occurrence of multidrug-resistant (MDR) extended-spectrum β-lactamase- (ESBL) and/or AmpC β-lactamase-producing Enterobacteriaceae in health care systems, the environment and fresh produce is a serious concern globally. Production practices, processing and subsequent consumption of contaminated raw fruit and vegetables represent a possible human transmission route. The purpose of this study was to determine the presence of ESBL/AmpC-producing Enterobacteriaceae in complete spinach supply chains and to characterize the isolated strains phenotypically (antimicrobial resistance profiles) and genotypically (ESBL/AmpC genetic determinants, detection of class 1, 2, and 3 integrons). Water, soil, fresh produce, and contact surface samples (n = 288) from two commercial spinach production systems were screened for ESBL/AmpC-producing Enterobacteriaceae. In total, 14.58% (42/288) of the samples were found to be contaminated after selective enrichment, plating onto chromogenic media and matrix-assisted laser desorption ionization time-of-flight mass spectrometry identity confirmation of presumptive ESBL/AmpC isolates. This included 15.28% (11/72) water and 12.12% (16/132) harvested- and processed spinach, while 25% (15/60) retail spinach samples were found to be contaminated with an increase in isolate abundance and diversity in both scenarios. Dominant species identified included Serratia fonticola (45.86%), Escherichia coli (20.83%), and Klebsiella pneumoniae (18.75%). In total, 48 (81.36%) isolates were phenotypically confirmed as ESBL/AmpC-producing Enterobacteriaceae of which 98% showed a MDR phenotype. Genotypic characterization (PCR of ESBL/AmpC resistance genes and integrons) further revealed the domination of the CTX-M Group 1 ESBL type, followed by TEM and SHV; whilst the CIT-type was the only plasmid-mediated AmpC genetic determinant detected. Integrons were detected in 79.17% (n = 38) of the confirmed ESBL/AmpC-producing isolates, of which we highlight the high prevalence of class 3 integrons, detected in 72.92% (n = 35) of the isolates, mostly in S. fonticola. Class 2 integrons were not detected in this study. This is the first report on the prevalence of ESBL/AmpC-producing Enterobacteriaceae isolated throughout commercial spinach production systems harboring class 1 and/or class 3 integrons in Gauteng Province, South Africa. The results add to the global knowledge base regarding the prevalence and characteristics of ESBL/AmpC-producing Enterobacteriaceae in fresh vegetables and the agricultural environment required for future risk analysis.
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Affiliation(s)
- Loandi Richter
- Department of Plant and Soil Sciences, University of Pretoria, Pretoria, South Africa
| | - Erika M du Plessis
- Department of Plant and Soil Sciences, University of Pretoria, Pretoria, South Africa
| | - Stacey Duvenage
- Department of Plant and Soil Sciences, University of Pretoria, Pretoria, South Africa.,Department of Science and Technology-National Research Foundation Centre of Excellence in Food Security, Bellville, South Africa
| | - Lise Korsten
- Department of Plant and Soil Sciences, University of Pretoria, Pretoria, South Africa.,Department of Science and Technology-National Research Foundation Centre of Excellence in Food Security, Bellville, South Africa
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19
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Platzer K, Kostner L, Vujic I, Monshi B, Richter L, Rappersberger K, Posch C. Clinical characteristics and treatment outcomes of 36 pyoderma gangrenosum patients – a retrospective, single institution observation. J Eur Acad Dermatol Venereol 2019; 33:e474-e475. [DOI: 10.1111/jdv.15803] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- K.D. Platzer
- Department of Dermatology and Allergy Technical University of Munich Munich Germany
| | - L. Kostner
- Department of Dermatology Rudolfstiftung Hospital Vienna Austria
| | - I. Vujic
- Department of Dermatology Rudolfstiftung Hospital Vienna Austria
- Faculty of Medicine Sigmund Freud University Vienna Vienna Austria
| | - B. Monshi
- Department of Dermatology Rudolfstiftung Hospital Vienna Austria
| | - L. Richter
- Department of Dermatology Rudolfstiftung Hospital Vienna Austria
| | - K. Rappersberger
- Department of Dermatology Rudolfstiftung Hospital Vienna Austria
- Faculty of Medicine Sigmund Freud University Vienna Vienna Austria
| | - C. Posch
- Department of Dermatology and Allergy Technical University of Munich Munich Germany
- Faculty of Medicine Sigmund Freud University Vienna Vienna Austria
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20
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Richter L, Du Plessis EM, Duvenage S, Korsten L. Occurrence, Identification, and Antimicrobial Resistance Profiles of Extended-Spectrum and AmpC β-Lactamase-Producing Enterobacteriaceae from Fresh Vegetables Retailed in Gauteng Province, South Africa. Foodborne Pathog Dis 2019; 16:421-427. [PMID: 30785775 DOI: 10.1089/fpd.2018.2558] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [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: 02/06/2023] Open
Abstract
Extended-spectrum β-lactamase (ESBL) and AmpC β-lactamase-producing Enterobacteriaceae are no longer restricted to the health care system, but represent increased risks related to environmental integrity and food safety. Fresh produce has been increasingly reported to constitute a reservoir of multidrug-resistant (MDR) potential human pathogenic Enterobacteriaceae. This study aimed to detect, identify, and characterize the antimicrobial resistance of ESBL/AmpC-producing Enterobacteriaceae isolates from fresh vegetables at point of sale. Vegetable samples (spinach, tomatoes, lettuce, cucumber, and green beans; n = 545) were purchased from retailers in Gauteng, the most densely populated province in South Africa. These included street vendors, trolley vendors, farmers' market stalls, and supermarket chain stores. Selective enrichment, plating onto chromogenic media, and matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF MS) confirmation of isolate identities showed that 17.4% (95/545) vegetable samples analyzed were contaminated with presumptive ESBL/AmpC-producing Enterobacteriaceae. Dominant species identified included Escherichia coli, Enterobacter cloacae, Enterobacter asburiae, and Klebsiella pneumoniae. Phenotypic antibiotic resistance analysis showed that 96.1% of 77 selected isolates were MDR, while resistance to aminoglycoside (94.8%), chloramphenicol (85.7%), and tetracycline (53.2%) antibiotic classes was most prevalent. Positive phenotypic analysis for ESBL production was shown in 61 (79.2%) of the 77 isolates, and AmpC production in 41.6% of the isolates. PCR and sequencing confirmed the presence of β-lactamase genes in 75.3% isolates from all vegetable types analyzed, mainly in E. coli, Enterobacter spp., and Serratia spp. isolates. CTX-M group 9 (32.8%) was the dominant ESBL type, while EBC (24.1%) was the most prevalent plasmidic type AmpC β-lactamase. Our findings document for the first time the presence of MDR ESBL/AmpC-producing Enterobacteriaceae in raw vegetables sold at selected retailers in Gauteng Province, South Africa.
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Affiliation(s)
- Loandi Richter
- Department of Plant and Soil Sciences, University of Pretoria, Pretoria, South Africa
| | - Erika M Du Plessis
- Department of Plant and Soil Sciences, University of Pretoria, Pretoria, South Africa
| | - Stacey Duvenage
- Department of Plant and Soil Sciences, University of Pretoria, Pretoria, South Africa
| | - Lise Korsten
- Department of Plant and Soil Sciences, University of Pretoria, Pretoria, South Africa
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Salazar-Austin N, Kulich M, Chingono A, Chariyalertsak S, Srithanaviboonchai K, Gray G, Richter L, van Rooyen H, Morin S, Sweat M, Mbwambo J, Szekeres G, Coates T, Celentano D. Age-Related Differences in Socio-demographic and Behavioral Determinants of HIV Testing and Counseling in HPTN 043/NIMH Project Accept. AIDS Behav 2018; 22:569-579. [PMID: 28589504 PMCID: PMC5718984 DOI: 10.1007/s10461-017-1807-5] [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] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Youth represent a large proportion of new HIV infections worldwide, yet their utilization of HIV testing and counseling (HTC) remains low. Using the post-intervention, cross-sectional, population-based household survey done in 2011 as part of HPTN 043/NIMH Project Accept, a cluster-randomized trial of community mobilization and mobile HTC in South Africa (Soweto and KwaZulu Natal), Zimbabwe, Tanzania and Thailand, we evaluated age-related differences among socio-demographic and behavioral determinants of HTC in study participants by study arm, site, and gender. A multivariate logistic regression model was developed using complete individual data from 13,755 participants with recent HIV testing (prior 12 months) as the outcome. Youth (18-24 years) was not predictive of recent HTC, except for high-risk youth with multiple concurrent partners, who were less likely (aOR 0.75; 95% CI 0.61-0.92) to have recently been tested than youth reporting a single partner. Importantly, the intervention was successful in reaching men with site specific success ranging from aOR 1.27 (95% CI 1.05-1.53) in South Africa to aOR 2.30 in Thailand (95% CI 1.85-2.84). Finally, across a diverse range of settings, higher education (aOR 1.67; 95% CI 1.42, 1.96), higher socio-economic status (aOR 1.21; 95% CI 1.08-1.36), and marriage (aOR 1.55; 95% CI 1.37-1.75) were all predictive of recent HTC, which did not significantly vary across study arm, site, gender or age category (18-24 vs. 25-32 years).
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Affiliation(s)
- N Salazar-Austin
- Department of Pediatrics, Johns Hopkins School of Medicine, 200 N. Wolfe St Room 3147, Baltimore, MD, 21287, USA.
| | - M Kulich
- Faculty of Mathematics and Physics, Department of Probability and Statistics, Charles University, Prague, Czech Republic
| | - A Chingono
- University of Zimbabwe College of Health Sciences, Harare, Zimbabwe
| | - S Chariyalertsak
- Department of Community Medicine, Chiang Mai University, Chiang Mai, Thailand
| | | | - G Gray
- South African Medical Research Council, Cape Town, South Africa
- University of the Witwatersrand, Johannesburg, South Africa
| | - L Richter
- University of the Witwatersrand, Johannesburg, South Africa
| | - H van Rooyen
- Human Sciences Research Council, Pretoria, South Africa
| | - S Morin
- Department of Medicine, University of California, San Francisco, USA
| | - M Sweat
- Division of Global and Community Health, Medical University of South Carolina, Charleston, SC, USA
| | - J Mbwambo
- Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania
| | - G Szekeres
- UCLA Center for World Health, University of California, Los Angeles, USA
| | - T Coates
- Department of Medicine, University of California, Los Angeles, CA, USA
| | - D Celentano
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, USA
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22
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Redinger S, Norris SA, Pearson RM, Richter L, Rochat T. First trimester antenatal depression and anxiety: prevalence and associated factors in an urban population in Soweto, South Africa. J Dev Orig Health Dis 2018; 9:30-40. [PMID: 28877770 DOI: 10.1017/s204017441700071x] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Depression and anxiety in the antenatal period are of public health concern given potential adverse effects for both mother and infant. Both are under-researched in the first trimester of pregnancy, especially in Africa. We examine the prevalence of first trimester antenatal depression and anxiety in a cohort of South African women and investigate associated risk factors. Data were collected from 946 women (2014-2016) in the Soweto First 1000 Days Cohort, a prospective pregnancy cohort in Soweto, South Africa. Antenatal depression was assessed using the Edinburgh Postnatal Depression Scale with a score of ⩾13 indicating probable depression. Anxiety was assessed using the short form of the State-Trait Anxiety Index with a score ⩾12 indicating probable anxiety. Prevalence of antenatal depression was 27% [95% confidence interval (CI) 24.2-29.8] and anxiety 15.2% (95% CI 12.9-17.5). Factors associated with antenatal depression and anxiety were predominantly relationship- and family-centred. Women who perceived that their partner made life harder for them had three-fold increased odds for depression [(odds ratio (OR) 3.33 [2.28-4.85] P<0.001], whereas those with family stressors had almost double the odds for depression (OR 1.78 [1.22-2.59] P=0.003) and anxiety (OR 1.75 [1.44-2.69] P=0.0011). Antenatal depression and anxiety are common in the first trimester of pregnancy, and partner and family relationship stressors are central. Longitudinal analysis is needed to determine if this is a phase of adjustment to pregnancy or onset of persistent symptomology. Early intervention may have secondary preventative effects and should involve the partner and family.
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Affiliation(s)
- S Redinger
- 1MRC/Developmental Pathways to Health Research Unit,School of Clinical Medicine, Faculty of Health Sciences,University of the Witwatersrand,Johannesburg,South Africa
| | - S A Norris
- 1MRC/Developmental Pathways to Health Research Unit,School of Clinical Medicine, Faculty of Health Sciences,University of the Witwatersrand,Johannesburg,South Africa
| | - R M Pearson
- 5School of Social and Community Medicine,Centre for Academic Mental Health,Bristol University,Bristol,UK
| | - L Richter
- 2DST-NRF Centre of Excellence in Human Development,University of Witwatersrand,Johannesburg,South Africa
| | - T Rochat
- 1MRC/Developmental Pathways to Health Research Unit,School of Clinical Medicine, Faculty of Health Sciences,University of the Witwatersrand,Johannesburg,South Africa
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23
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Richter L, Samuels ML. The South African universal preschool year: a case study of policy development and implementation. Child Care Health Dev 2018; 44:12-18. [PMID: 29235166 DOI: 10.1111/cch.12511] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Revised: 07/17/2017] [Accepted: 08/15/2017] [Indexed: 11/27/2022]
Abstract
BACKGROUND South Africa is the first sub-Saharan African country to legislate, fund and implement free preschool education. Human rights and restitution were at the forefront of the political struggle for democracy in South Africa. Levelling the playing fields by improving the school readiness of children disadvantaged by the racist policies of Apartheid is essential to the transformation of South African society. METHODS A review of published and unpublished documents on Grade R was undertaken, and access and enrolment data come from the National Department of Basic Education's Education Management Information System (EMIS). RESULTS A decade after initiation in 2005, 79% of 5-year-olds was enrolled in a preschool class; the vast majority of them in free public schools. Grade R is near universal and on track to becoming compulsory. It is part of the Foundation Phase (Grades 1-3) of schooling, falling under the Department of Basic Education, but also part of a broader national strategy to improve early child development under the direction of an Inter-Departmental Steering. Evaluations demonstrate wide access to Grade R and high uptake, especially in the poorest areas. However, the quality of Grade R provision in these areas is not up to standard because of low levels of funding; inadequate training, supervision, remuneration and retention of Grade R teachers; insufficient learner support materials; and inadequate monitoring and quality assurance. CONCLUSIONS Lack of quality, amongst other factors, contributes to a widening school performance gap between children from more and less privileged areas. Quality of Grade R as well as earlier learning and subsequent years of schooling must be improved to achieve South Africa's aim to reduce poverty and inequality through, amongst others, parent and family involvement, learning in the home and preschool preparation.
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Affiliation(s)
- L Richter
- DST-NRF Centre of Excellence in Human Development, University of the Witwatersrand, Johannesburg, South Africa
| | - M-L Samuels
- Director of Early Childhood Development, South African Department of Basic Education, Sol Plaatje House, Pretoria, South Africa
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24
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Vujic I, Herman R, Sanlorenzo M, Posch C, Monshi B, Rappersberger K, Richter L. Apremilast in psoriasis - a prospective real-world study. J Eur Acad Dermatol Venereol 2017; 32:254-259. [DOI: 10.1111/jdv.14598] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2017] [Accepted: 09/05/2017] [Indexed: 12/26/2022]
Affiliation(s)
- I. Vujic
- Dermatology; The Rudolfstiftung Hospital; Vienna Austria
- School of Medicine; Sigmund Freud University; Vienna Austria
| | - R. Herman
- Dermatology; The Rudolfstiftung Hospital; Vienna Austria
- School of Medicine; Sigmund Freud University; Vienna Austria
| | - M. Sanlorenzo
- Department of Oncology; University of Turin; Italy
- Institute of Cancer Research; Department of Medicine I; Comprehensive Cancer Center; Medical University of Vienna; Vienna Austria
| | - C. Posch
- Dermatology; The Rudolfstiftung Hospital; Vienna Austria
- School of Medicine; Sigmund Freud University; Vienna Austria
| | - B. Monshi
- Dermatology; The Rudolfstiftung Hospital; Vienna Austria
| | - K. Rappersberger
- Dermatology; The Rudolfstiftung Hospital; Vienna Austria
- School of Medicine; Sigmund Freud University; Vienna Austria
| | - L. Richter
- Dermatology; The Rudolfstiftung Hospital; Vienna Austria
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25
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Vujic I, Herman R, Sanlorenzo M, Posch C, Monshi B, Rappersberger K, Richter L. 014 Apremilast in psoriasis - a prospective real-world study. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.07.110] [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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26
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Stockinger T, Richter L, Kanzler M, Melichart-Kotik M, Pas H, Derfler K, Schmidt E, Rappersberger K. [Systemic lupus erythematosus : Unusual cutaneous manifestations]. Hautarzt 2017; 67:970-981. [PMID: 27878308 DOI: 10.1007/s00105-016-3893-0] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
BACKGROUND Various different mucocutaneous symptoms may affect up to 80 % of systemic lupus erythematosus (SLE) patients. OBJECTIVES To investigate, various unspecific, but otherwise typical clinical symptoms of skin and mucous membranes that arise in SLE patients other than those defined as SLE criteria such as butterfly rash, chronic cutaneous lupus erythematosus, oral ulcers, and increased photosensitivity. MATERIALS AND METHODS Extensive search of peer-reviewed scientific articles was performed, medical histories of several SLE patients seen in our department were analyzed, and the rare disease courses in three SLE patients are presented. RESULTS Here we present a variety of unspecific but typical mucocutaneous manifestations in SLE patients: periungual erythema, periungual telangiectasia and periungual splinter hemorrhage, papules on the dorsum of the hands, scaling erythema, sometimes associated with necrosis, especially of the ears, along with complement deficiency, and the bizarre necroses of antiphospholipid syndrome. Furthermore, we show the typical clinico-histological features of neutrophilic urticarial dermatosis, as well as those of bullous SLE and finally a severe course of bacterial sepsis with Neisseria flavescens/macacae. CONCLUSIONS Here we show several unspecific but rather typical mucocutaneous symptoms in lupus patients that are indicative of SLE and thus may lead to an early diagnosis. Also, life-threatening bacterial sepsis may occur with microorganisms that are commonly considered "apathogenic", such as Neisseria flavescens/macacae, which exclusively affect immunosuppressed patients.
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Affiliation(s)
- T Stockinger
- Abteilung Dermatologie und Venerologie, Krankenanstalt Rudolfstiftung, Juchgasse 25, 1030, Wien, Österreich.
| | - L Richter
- Abteilung Dermatologie und Venerologie, Krankenanstalt Rudolfstiftung, Juchgasse 25, 1030, Wien, Österreich
| | - M Kanzler
- Abteilung Diabetologie, Endokrinologie und Nephrologie, Krankenanstalt Rudolfstiftung, Wien, Österreich
| | - M Melichart-Kotik
- Abteilung Diabetologie, Endokrinologie und Nephrologie, Krankenanstalt Rudolfstiftung, Wien, Österreich
| | - H Pas
- Abteilung Dermatologie, Zentrum für blasenbildende Erkrankungen, Universitätsklinik Groningen, Groningen, Niederlande
| | - K Derfler
- Klinische Abteilung für Nephrologie und Dialyse, Universitätsklinik für Innere Medizin III, Allgemeines Krankenhaus Wien, Wien, Österreich
| | - E Schmidt
- Abteilung Dermatologie, Klinik für Dermatologie, Allergologie und Venerologie, Universität zu Lübeck, Lübeck, Deutschland
| | - K Rappersberger
- Abteilung Dermatologie und Venerologie, Krankenanstalt Rudolfstiftung, Juchgasse 25, 1030, Wien, Österreich
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Abstract
BACKGROUND Over recent decades, both the incidence and prevalence of chronic inflammatory bowel disease have continued to rise in industrialized countries; the disease is frequently associated with extracutaneous involvement and comorbidity. OBJECTIVES The purpose of this work was to investigate the frequency and specificity of mucocutaneous manifestations in Crohn's disease (CD) and ulcerative colitis (UC). MATERIALS AND METHODS An extensive search in peer-reviewed journals via PubMed was performed; presented is a summary and analysis of various studies and data, including data of patients treated at our department. RESULTS CD and UC are frequently associated with mucocutaneous symptoms; however, primary/specific disease-associations are exclusively seen in CD patients. These include peri-anal and -stomal fistulas and ulcerations, "metastatic" Crohn's disease as well as oral granulomatous disease. Moreover, in both CD and UC, there occur several other inflammatory skin conditions such as erythema nodosum, pyoderma gangrenosum, hidradenitis suppurativa, chronic oral aphthous disease, Sweet syndrome, pyostomatitis vegetans, and bowel-associated dermatosis-arthritis syndrome. Malnutrition syndromes (zinc and vitamin deficiencies) are only rarely observed. CONCLUSION On skin and oral/genital mucous membranes various different inflammatory manifestations may be observed during the course of CD or UC. However, most data about a direct pathogenic relationship of the gastrointestinal and dermatologic disorders are quite heterogeneous or even contradictory. Nevertheless, knowledge of these conditions and their possible association with CD and UC could be crucial for early diagnosis and initiation of an appropriate therapy and thus be essential to prevent secondary tissue damage.
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Affiliation(s)
- L Richter
- Abteilung für Dermatologie und Venerologie, Krankenanstalt Rudolfstiftung, Juchgasse 25, 1030, Wien, Österreich. .,Abteilung für Dermatologie und Venerologie, Sigmund Freud Privatuniversität, Sigmund Freud Platz 1, 1020, Wien, Österreich.
| | - K Rappersberger
- Abteilung für Dermatologie und Venerologie, Krankenanstalt Rudolfstiftung, Juchgasse 25, 1030, Wien, Österreich.,Abteilung für Dermatologie und Venerologie, Sigmund Freud Privatuniversität, Sigmund Freud Platz 1, 1020, Wien, Österreich
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Hsiao C, Richter L, Makusha T, Matafwali B, van Heerden A, Mabaso M. Use of the ages and stages questionnaire adapted for South Africa and Zambia. Child Care Health Dev 2017; 43:59-66. [PMID: 27709653 DOI: 10.1111/cch.12413] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Revised: 08/08/2016] [Accepted: 09/01/2016] [Indexed: 11/28/2022]
Abstract
BACKGROUND There are few readily available, relatively easy to use and culturally adaptable developmental assessment tools for young children in southern Africa. The overarching aim of this study is to test the psychometric properties, contextual appropriateness and cut-off scores across 21 age groups of the Ages and Stages Questionnaire Third Edition (Squires & Bricker, ) among a group of typically developing children in South Africa and Zambia through a combination of both caregiver-report and direct observations, and to compare children's performance across sociodemographic variables. METHODS The sample consisted of 853 children (50.5% Zambia, with 50.1% girls for Zambia and 50% girls for South Africa) aged 2 months to 60 months. Information on caregiver employment, education and household assets were also obtained. RESULTS The psychometric properties of the ASQ-3 in southern Africa are consistent with those found in the extant literature. Analysis of item difficulty at each age reveals adequate levels of difficulty for majority of the items, with exception of the problem solving domain where half of the items at 54 and 60 months have poor pass rates. Sociodemographic variables were significantly associated with children's performance: higher caregiver levels of education are associated with higher toddler scores on the personal-social domain and higher preschooler scores on the problem solving domain; children whose caregivers earn a salary have higher fine motor scores during toddlerhood and higher problem solving scores during preschool and children who attend preschools have higher gross motor scores during toddlerhood and higher fine motor scores during the preschool years. CONCLUSIONS Findings provide evidence to support the psychometric properties and feasibility of using the ASQ-3 in both South Africa and Zambia through a combination of caregiver-report and direct observations.
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Affiliation(s)
- C Hsiao
- MRC/Wits Developmental Pathways for Health Research Unit, University of the Witwatersrand, Gauteng, South Africa
| | - L Richter
- DST-NRF Centre of Excellence in Human Development, University of the Witwatersrand, Parktown, Johannesburg, South Africa.,Human Sciences Research Council, Dalridge, Durban, South Africa
| | - T Makusha
- Human Sciences Research Council, Dalridge, Durban, South Africa
| | - B Matafwali
- University of Zambia, Department of Educational Psychology, Sociology and Special Education, University of Zambia, School of Education, Lusaka, Zambia
| | - A van Heerden
- Human Sciences Research Council, Dalridge, Durban, South Africa
| | - M Mabaso
- Human Sciences Research Council, Dalridge, Durban, South Africa
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Brüning E, Richter L, Höpfner V, Freermann S, Reichelt J, Akil A, Semik M, Ziegler S, Fischer S. Bedeutung eines atmungstherapeutischen (AT)- Algorithmus für das Outcome nach thorakoskopischer Lungenvolumenreduktion (LVRS). Zentralbl Chir 2016. [DOI: 10.1055/s-0036-1587494] [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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30
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Richter L, Brüning E, Höpfner V, Freermann S, Reichelt J, Akil A, Semik M, Ziegler S, Fischer S. Perioperatives Management mittels Single-Port veno-venöser extrakorporaler Membran Oxygenierung (v-v-ECMO) erhöht beim wachen, nicht-intubierten Patienten die Effektivität der postoperativen Atmungstherapie nach Lungenvolumenreduktionsoperation (LVRS). Zentralbl Chir 2016. [DOI: 10.1055/s-0036-1587471] [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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31
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Bruening E, Richter L, Redwan B, Huepfner V, Fischer S. P-244EXTRACORPOREAL LUNG SUPPORT FOR PATIENTS WITH ACUTE EXACERBATED CHRONIC OBSTRUCTIVE PULMONARY DISEASE FAILING NON-INVASIVE VENTILATION: IMPLEMENTATION OF A NOVEL ALGORITHM OF RESPIRATORY THERAPY. Interact Cardiovasc Thorac Surg 2016. [DOI: 10.1093/icvts/ivw260.241] [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: 11/13/2022] Open
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32
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Vigl K, Posch C, Richter L, Monshi B, Rappersberger K. Pyoderma gangrenosum during pregnancy - treatment options revisited. J Eur Acad Dermatol Venereol 2016; 30:1981-1984. [DOI: 10.1111/jdv.13792] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Accepted: 03/16/2016] [Indexed: 12/11/2022]
Affiliation(s)
- K. Vigl
- Department of Dermatology and Venerology; The Rudolfstiftung Hospital; Vienna Austria
| | - C. Posch
- Department of Dermatology and Venerology; The Rudolfstiftung Hospital; Vienna Austria
| | - L. Richter
- Department of Dermatology and Venerology; The Rudolfstiftung Hospital; Vienna Austria
| | - B. Monshi
- Department of Dermatology and Venerology; The Rudolfstiftung Hospital; Vienna Austria
| | - K. Rappersberger
- Department of Dermatology and Venerology; The Rudolfstiftung Hospital; Vienna Austria
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33
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Brüning E, Richter L, Redwan B, Goik T, Fischer S. Atmungstherapeutische Aspekte beim wachen Patienten mit veno-venöser extrakorporaler Lungenunterstützung (ECLS) bei exazerbierter COPD (AECOPD) nach Versagen der non-invasiven Beatmung (NIV). Zentralbl Chir 2015. [DOI: 10.1055/s-0035-1559924] [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: 10/23/2022]
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34
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Richter L, Mabaso M, Ramjith J, Norris SA. Early sexual debut: Voluntary or coerced? Evidence from longitudinal data in South Africa--the Birth to Twenty Plus study. S Afr Med J 2015; 105:304-307. [PMID: 26294851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2015] [Indexed: 06/04/2023] Open
Abstract
BACKGROUND Early sexual debut, voluntary or coerced, increases risks to sexual and reproductive health. Sexual coercion is increasingly receiving attention as an important public health issue owing to its association with adverse health and social outcomes. OBJECTIVE To describe voluntary and coerced experience at sexual debut. METHODS A longitudinal perspective among 2,216 adolescents (1,149 females, 1,067 males) in a birth cohort study in South Africa, analysing data collected on six occasions between 11 and 18 years. RESULTS The median age of sexual debut was 16 years for females and 15 for males. Reported coerced sexual debut included children < 11 years of age. Males reported earlier sexual debut with both voluntary and coerced sexual experience, than females (p < 0.0001). Sexual coercion at early sexual debut among both male and female adolescents occurred mostly through sexual intercourse with older adolescents and partners of the same age. CONCLUSION The identified time periods and age groups need to be targeted for interventions to delay sexual debut and prevent sexual coercion among young people. More research is needed to understand underlying predisposing risk factors for sexual coercion at sexual debut, both early and not early.
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35
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Sator P, Richter L, Saxinger W, Vasiljevic M, Stingl G. Adalimumab in the treatment of moderate-to-severe chronic plaque psoriasis in patients switching from other biologics. J Eur Acad Dermatol Venereol 2015; 29:1742-9. [PMID: 25665143 DOI: 10.1111/jdv.12981] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2014] [Accepted: 12/21/2014] [Indexed: 12/31/2022]
Abstract
BACKGROUND Ample evidence shows that switching from one biological agent to another may prove effective when response to the first one is inadequate. Nevertheless, there are little data so far showing the efficacy and safety of adalimumab in patients with plaque psoriasis who previously received another biologic agent. OBJECTIVE We evaluated the 1-year effectiveness, safety and quality-of-life outcomes patients with psoriasis who had switched to adalimumab from other biologic therapies. METHODS Forty-two patients who participated in this Austrian multicenter study were treated with adalimumab over a 1-year period, after switching from efalizumab, infliximab or etanercept. Effectiveness was assessed using standardized tools for measurement of disease severity [Psoriasis Area and Severity Index (PASI) and Nail Psoriasis Severity Index (NAPSI)] and quality of life [Dermatology Life Quality Index (DLQI)]. The study endpoints were evaluated using the all-treated population. RESULTS The mean percentage of improvement at the end of the study was 74.3% for PASI, 81.6% for DLQI and 83.6% for NAPSI, demonstrating a considerable benefit of treatment with adalimumab. The safety profile observed was consistent with previous clinical trials for adalimumab, and no new safety signals were observed. CONCLUSION Adalimumab therapy in patients with plaque psoriasis previously treated with other biologic agents demonstrates effectiveness, safety and improvement in quality of life.
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Affiliation(s)
- P Sator
- Department of Dermatology, Hospital Hietzing with Neurologic Centre Rosenhügel, Vienna, Austria
| | - L Richter
- Hospital Rudolfstiftung including site Semmelweis Clinic of Gynaecology, Vienna, Austria
| | - W Saxinger
- Department of Dermatology, Hospital Wels-Grieskirchen, Wels-Grieskirchen, Austria
| | | | - G Stingl
- Division of Immunology Allergy and Infectious Diseases (DIAID), Department of Dermatology, Medical University of Vienna, Vienna, Austria
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36
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Casale D, Desmond C, Richter L. The association between stunting and psychosocial development among preschool children: a study using the South African Birth to Twenty cohort data. Child Care Health Dev 2014; 40:900-10. [PMID: 24807234 DOI: 10.1111/cch.12143] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/28/2014] [Indexed: 11/26/2022]
Abstract
BACKGROUND A large literature in developing countries finds a strong association between stunting in early childhood and educational attainment and/or cognitive performance among children of school-going age. We contribute to the literature on the effects of stunting in childhood by exploring the links between linear growth retardation and measures of development among preschool-aged children. METHODS We analyse the association between stunting (height-for-age z-score <-2) at age 2 years and children's scores on the Vineland Social Maturity Scale (VSMS) at age 4 years, a measure of social competence or 'daily living skills', and the Revised-Denver Prescreening Developmental Questionnaire (R-DPDQ) at age 5 years, a test which places greater emphasis on cognitive functioning. The sample is drawn from the Birth to Twenty cohort study, a prospective dataset of children born in 1990 in urban South Africa. We conduct multivariate regression analysis controlling for socio-economic status, various child-specific characteristics, home environment and caregiver inputs. RESULTS No significant association between stunting and children's performance on the VSMS, but a large and significant association with the R-DPDQ scores, was found. A disaggregated analysis of the various components of the scores suggests that children with low height-for-age at 2 years do not fall behind in terms of daily living skills or social maturity, but do substantially worse on measures capturing higher order fine motor skills and cognitive functioning. CONCLUSIONS Stunting in early childhood is strongly related to impaired cognitive functioning in children of preschool age, but does not seem to affect social maturity, at least as measured by the VSMS. These relationships between stunting at 2 years and psychosocial development at 4 and 5 years hold with extensive controls for socio-economic status, home environment, caregiver inputs and child characteristics included in the multivariate analysis.
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Affiliation(s)
- D Casale
- School of the Built Environment and Development Studies, University of KwaZulu-Natal, Durban, South Africa
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37
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Zühlke C, Deitermann B, Torbrügge C, Richter L. Gut vernetzt im Kinderschutz? Sind Kooperationsvereinbarungen zum Schutz von Kindern suchtmittelabhängiger Eltern ein zweckmäßiges Instrument für den Kinderschutz? Gesundheitswesen 2014. [DOI: 10.1055/s-0034-1371625] [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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38
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Amengual JL, Marco-Pallarés J, Richter L, Oung S, Schweikard A, Mohammadi B, Rodríguez-Fornells A, Münte TF. Tracking post-error adaptation in the motor system by transcranial magnetic stimulation. Neuroscience 2013; 250:342-51. [PMID: 23876325 DOI: 10.1016/j.neuroscience.2013.07.024] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [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: 03/25/2013] [Revised: 07/09/2013] [Accepted: 07/11/2013] [Indexed: 11/15/2022]
Abstract
The commission of an error triggers cognitive control processes dedicated to error correction and prevention. Post-error adjustments leading to response slowing following an error ("post-error slowing"; PES) might be driven by changes in excitability of the motor regions and the corticospinal tract (CST). The time-course of such excitability modulations of the CST leading to PES is largely unknown. To track these presumed excitability changes after an error, single pulse transcranial magnetic stimulation (TMS) was applied to the motor cortex ipsilateral to the responding hand, while participants were performing an Eriksen flanker task. A robotic arm with a movement compensation system was used to maintain the TMS coil in the correct position during the experiment. Magnetic pulses were delivered over the primary motor cortex ipsilateral to the active hand at different intervals (150, 300, 450 ms) after correct and erroneous responses, and the motor-evoked potentials (MEP) of the first dorsal interosseous muscle (FDI) contralateral to the stimulated hemisphere were recorded. MEP amplitude was increased 450 ms after the error. Two additional experiments showed that this increase was neither associated to the correction of the erroneous responses nor to the characteristics of the motor command. To the extent to which the excitability of the motor cortex ipsi- and contralateral to the response hand are inversely related, these results suggest a decrease in the excitability of the active motor cortex after an erroneous response. This modulation of the activity of the CST serves to prevent further premature and erroneous responses. At a more general level, the study shows the power of the TMS technique for the exploration of the temporal evolution of post-error adjustments within the motor system.
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Affiliation(s)
- J L Amengual
- Department of Basic Psychology, University of Barcelona, 08035 Barcelona, Spain.
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Monshi B, Groth S, Richter L, Schmidt E, Zillikens D, Rappersberger K. A long-term study of a patient with anti-p200 pemphigoid: correlation of autoantibody levels with disease activity and an example of epitope spreading. Br J Dermatol 2013; 167:1179-83. [PMID: 22639938 DOI: 10.1111/j.1365-2133.2012.11076.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Anti-p200 pemphigoid is a rare subepidermal blistering disease associated with autoantibodies against a 200-kDa protein, reportedly corresponding to laminin γ1. However, direct evidence of the pathogenic potential of these antibodies has not been proven. For 5 years we have followed up a patient with anti-p200 pemphigoid. During this period she experienced a total of three generalized relapses. Quantifying our patient's autoantibody concentrations against laminin γ1 by enzyme-linked immunosorbent assay throughout the course of her disease we demonstrated a clear correlation with disease activity, thus providing the first evidence of the possible pathogenic role of antibodies against laminin γ1 in anti-p200 pemphigoid. Further analysis by Western blotting revealed the occurrence of additional autoantibodies against the α3 chain of laminin 332, 1·5 years after diagnosis, suggestive of intermolecular epitope spreading. Yet, the clinical appearance was unchanged and mucous membranes remained unaffected at any stage of the disease.
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Affiliation(s)
- B Monshi
- Department of Dermatology, KA Rudolfstiftung, Vienna, Austria.
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40
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Zühlke C, Deitermann B, Torbrügge C, Richter L. Vernetzung ambulanter Hilfen zum Schutze des Kindeswohls bei suchtmittelabhängigen Eltern. Gesundheitswesen 2013. [DOI: 10.1055/s-0033-1337568] [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: 10/27/2022]
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Abstract
Abstract
Three methods for the determination of the surface tension of liquids based on force measurements namely, the vertical plate method of Wilhelmy, the frame method of Lenard and the ring method of du Noüy are compared and studied in respect of a common principle of correction. It is shown that these three most important force-based methods allow the determination of the surface tension under static conditions. The force components of the corresponding liquid column below the measuring wire obtained for the straight part of the withdrawal curve up to the transition in its curved part provides exact surface tension values. The experimentally accessible value of the force component describes the physical background of the measured value correction contrary to the approximate equations obtained by mathematical way. Usually the determination of surface tension of liquids is based merely at the vertical plate method on exact equations thermodynamically derived whereas in the case of the frame and ring methods correction factors in approximate equations are used. At usual application of the force-based methods under the non-static condition of the withdrawal of a liquid column, the force maximum measured at withdrawal of the measuring object (plate, frame, or ring) is the basis for the determination of surface tension. In these cases, the measured surface tension values are compensated by correction equations for the frame and ring methods which are based on an correction factor and correction tables empirically obtained. The surface tension values obtained in this usual way agree with those obtained by using the force component of the corresponding liquid column below the measuring wire for the straight part of the withdrawal curve up to the transition in its curved part. Problems arising at the force measurements with increasing thickness of the measuring wires inside and outside the rings are discussed.
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Bremer S, Richter L, Oung S, Schweikard A, Trillenberg P. Roboternavigierte Untersuchung der Tiefenabhängigkeit der Reizstärke bei der transkraniellen Magnetstimulation. KLIN NEUROPHYSIOL 2012. [DOI: 10.1055/s-0032-1301473] [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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Monshi B, Richter L, Hashimoto T, Groiß E, Haensch N, Rappersberger K. [IgA pemphigus of the subcorneal pustular dermatosis type. Successful therapy with a combination of dapsone and acitretin]. Hautarzt 2012; 63:482-6. [PMID: 22218566 DOI: 10.1007/s00105-011-2270-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
IgA pemphigus of the subcorneal pustular dermatosis type is a rare autoimmune blistering disease in the pemphigus spectrum. Patients are clinically characterized by extensive erythemas that primarily affect intertriginous areas. The erythematous macules are covered with numerous vesicles and pustules with occasional hypopyon formation. Histopathology shows subcorneal acantholysis with clefting and numerous neutrophils within the blister as well as in the edematous papillary dermis. IgA autoantibodies bind in vivo to keratinocytes within the upper half of the epidermis. Desmocollin 1, the autoantigen of this disease, is a member of desmosomal cadherins and is only expressed on more differentiated keratinocytes. The demonstration of circulating autoantibodies against desmocollin 1 in routine diagnosis is challenging and requires indirect immunofluorescence staining of desmocollin 1 transfected COS7 cells. We report a patient with a severe course of the disease who only responded to combined therapy with dapsone and acitretin.
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Affiliation(s)
- B Monshi
- Abteilung für Dermatologie und Venerologie, Krankenanstalt Rudolfstiftung, Juchgasse 25, 1030, Wien, Österreich.
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Richter L, Trillenberg P, Schweikard A, Schlaefer A. Comparison of stimulus intensity in hand held and robotized motion compensated transcranial magnetic stimulation. Neurophysiol Clin 2012. [DOI: 10.1016/j.neucli.2011.11.028] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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45
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Bruder R, Ernst F, Stender B, Richter L, Schweikard A. SU-D-220-02: Optimal Transducer Position for 4D Ultrasound Guidance in Cardiac IGRT. Med Phys 2011. [DOI: 10.1118/1.3611550] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Jurkat H, Höfer S, Richter L, Cramer M, Vetter A. [Quality of life, stress management and health promotion in medical and dental students. A comparative study]. Dtsch Med Wochenschr 2011; 136:1245-50. [PMID: 21630170 DOI: 10.1055/s-0031-1280544] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [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
OBJECTIVE Which are the differences in health-related quality of life and stress management in medical and dental students? METHODS 101 dental and 237 medical students from different years of Justus-Liebig University Giessen were examined during winter term 2008/09 and summer term 2009 using the specific Questionnaire on Health Promotion, Life Satisfaction, and Stress Management in Dental or Medical Students (addressing work satisfaction and choice of subject, private life, relaxation behavior and stress management, and health behavior), Beck Depression Inventory (BDI) and SF-36 Health Survey. For statistical analysis, Mann-Whitney-U-Test, analysis of variance (ANOVA), Pearson correlation and Chi2-Tests were primarily used. RESULTS Dental and medical students showed considerable mental impairment in SF-36. Every fifth dental student suffered from slight to moderate depression. Though averaging more hours per week, medical students were more satisfied with their studies. More than half of the dental and medical students did not have appropriate strategies of coping with stress. CONCLUSIONS Concerning the mental impairment in both groups and regarding a higher health-related quality of life, specific prevention courses or mentoring programs should already be offered at the beginning of medical training in order to cope with strains of medical school and future job strains in the medical or dental profession.
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Affiliation(s)
- H Jurkat
- Klinik für Psychosomatik und Psychotherapie des Universitätsklinikum Gießen.
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47
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Lohmaier J, Richter L, Oezbaykondu J, Artmann A, Kiechle M, Seifert-Klauss V. 25-Hydroxyvitamin D im Serum und Biopsie-Ergebnisse bei Frauen mit auffälliger Mammografie. Geburtshilfe Frauenheilkd 2011. [DOI: 10.1055/s-0031-1278574] [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] Open
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Richter L, Lohmaier J, Oezbaykondu J, Artmann A, Kiechle M, Seifert-Klauss V. Gibt es einen Zusammenhang zwischen 25-Hydroxyvitamin D-Serumspiegeln und mammographischer Dichte? Geburtshilfe Frauenheilkd 2011. [DOI: 10.1055/s-0031-1278572] [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] Open
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Trillenberg P, Neumann G, Oung S, Schweikard A, Richter L. Threshold for Transcranial Magnetic Stimulation of the foot: precise control of coil orientation with a robotized system. KLIN NEUROPHYSIOL 2011. [DOI: 10.1055/s-0031-1272727] [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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Janhunen P, Toivanen PK, Polkko J, Merikallio S, Salminen P, Haeggström E, Seppänen H, Kurppa R, Ukkonen J, Kiprich S, Thornell G, Kratz H, Richter L, Krömer O, Rosta R, Noorma M, Envall J, Lätt S, Mengali G, Quarta AA, Koivisto H, Tarvainen O, Kalvas T, Kauppinen J, Nuottajärvi A, Obraztsov A. Invited article: Electric solar wind sail: toward test missions. Rev Sci Instrum 2010; 81:111301. [PMID: 21133454 DOI: 10.1063/1.3514548] [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] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The electric solar wind sail (E-sail) is a space propulsion concept that uses the natural solar wind dynamic pressure for producing spacecraft thrust. In its baseline form, the E-sail consists of a number of long, thin, conducting, and centrifugally stretched tethers, which are kept in a high positive potential by an onboard electron gun. The concept gains its efficiency from the fact that the effective sail area, i.e., the potential structure of the tethers, can be millions of times larger than the physical area of the thin tethers wires, which offsets the fact that the dynamic pressure of the solar wind is very weak. Indeed, according to the most recent published estimates, an E-sail of 1 N thrust and 100 kg mass could be built in the rather near future, providing a revolutionary level of propulsive performance (specific acceleration) for travel in the solar system. Here we give a review of the ongoing technical development work of the E-sail, covering tether construction, overall mechanical design alternatives, guidance and navigation strategies, and dynamical and orbital simulations.
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Affiliation(s)
- P Janhunen
- Finnish Meteorological Institute, Helsinki FIN-00100, Finland.
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