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Abstract
1. An experiment was conducted to study the effects of diet density and feeding frequency during the rearing period on broiler breeder performance between three and 40 weeks of age.2. A total of 960 female one-day-old chicks (Ross 308) were randomly allocated to 24 floor pens (12 pens in two rooms). On day 21 pullets were assigned to a 2 × 2 factorial arrangement including two diets (control (CON) or 16% diluted (DIL)) and two feeding strategies (fed once (FO) or twice (FT) a day). The FO pullets were fed at 0815 h (100%) and FT pullets at 0815 h (60%) and 1215 h (40%). Water was provided by nipple drinkers with drip cups during 7 and 8 h in the rearing and laying period, respectively.3. Body weight (BW) and water intake were measured weekly and BW uniformity at 10 and 20 weeks of age. Litter characteristics were measured at 10, 15, and 20 weeks of age. During the laying period, egg production and incubation characteristics were recorded.4. The DIL pullets received a higher feed allowance in combination with similar water intake which resulted in a lower water/feed ratio compared to the CON pullets resulting in a higher DM content of the litter and improved litter quality. The higher feed allowance resulted in a 20% higher total manure production at 20 weeks of age. The FT pullets showed a lower body weight (BW) CV at 10 weeks of age; however, no effect was found at 20 weeks of age. During the laying period, FT pullets tended to have earlier onset of lay, higher total egg production at 30 weeks of age and better fertility.5. It was concluded that alternative feeding strategies can positively influence production performance during both the rearing and laying period.
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Affiliation(s)
- R A van Emous
- Animal Nutrition Department, Wageningen Livestock Research, Wageningen, The Netherlands
| | - A J W Mens
- Animal Nutrition Department, Wageningen Livestock Research, Wageningen, The Netherlands
| | - A Winkel
- Animal Nutrition Department, Wageningen Livestock Research, Wageningen, The Netherlands
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Subh L, Correa W, Pinkvos T, Behrens P, Brandenburg K, Gutsmann T, Stiesch M, Doll K, Winkel A. Synthetic anti‐endotoxin peptides interfere with Gram‐positive and Gram‐negative bacteria, their adhesion and biofilm formation on titanium. J Appl Microbiol 2020; 129:1272-1286. [DOI: 10.1111/jam.14701] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 02/18/2020] [Accepted: 05/06/2020] [Indexed: 12/20/2022]
Affiliation(s)
- L. Subh
- Clinic of Prosthetic Dentistry and Biomedical Materials ScienceHannover Medical School Hannover Germany
| | - W. Correa
- Division of Biophysics Research Center Borstel – Leibniz Lung Center Borstel Germany
| | - T.‐J. Pinkvos
- Institute for Inorganic Chemistry Leibniz University of Hannover Hannover Germany
| | - P. Behrens
- Institute for Inorganic Chemistry Leibniz University of Hannover Hannover Germany
| | | | - T. Gutsmann
- Division of Biophysics Research Center Borstel – Leibniz Lung Center Borstel Germany
| | - M. Stiesch
- Clinic of Prosthetic Dentistry and Biomedical Materials ScienceHannover Medical School Hannover Germany
| | - K. Doll
- Clinic of Prosthetic Dentistry and Biomedical Materials ScienceHannover Medical School Hannover Germany
| | - A. Winkel
- Clinic of Prosthetic Dentistry and Biomedical Materials ScienceHannover Medical School Hannover Germany
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van Emous RA, Winkel A, Aarnink AJA. Effects of dietary crude protein levels on ammonia emission, litter and manure composition, N losses, and water intake in broiler breeders. Poult Sci 2020; 98:6618-6625. [PMID: 31504909 PMCID: PMC8913978 DOI: 10.3382/ps/pez508] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Accepted: 08/20/2019] [Indexed: 11/24/2022] Open
Abstract
This study determined the effects of different dietary crude protein (CP) levels on ammonia emission (NH3), litter and manure composition, nitrogen (N) losses, and water intake in broiler breeders. A total of 480 females and 64 males (Ross 308) 20 wk of age were randomly allotted to 2 dietary treatments with 8 replicates of 30 females and 4 males per replicate. Birds were fed either high CP (CPh) or low CP diets (CPl) supplemented with free amino acids (AA). Both diets consisted of 3 sub-diets; 1 for each phase of the laying period. Diets were formulated to be iso-caloric and calculated CP content of the CPl diets was 15 g/kg lower than the CPh diets (Breeder 1 (23 to 34 wk): 135 vs. 150, Breeder 2 (35 to 46 wk): 125 vs. 140 and Breeder 3 (47 to 60 wk of age): 115 vs. 130 g/kg, respectively). Pens consisted of an elevated slatted floor (25% of the floor surface) and a litter floor. Water and feed intake were recorded daily. Litter (floor) and manure (below slatted floor) composition and ammonia concentration were measured at 34, 44, and 54 wk of age. Ammonia concentration was measured using a flux chamber on top of the litter or manure. Estimated N losses were calculated. Dietary protein level did not affect water intake and dry matter (DM) content of the litter or manure. Compared to birds fed the CPh diets, the litter and manure samples of broiler breeders fed the CPl had 8% lower total-N and 13% lower ammonia-N content resulting in a 9% lower ammonia concentration, 9% lower ammonia emission, and 11% lower total-N losses. In conclusion, this study shows that reducing CP level in the diet of broiler breeders reduces ammonia emission and total N-losses from litter and manure.
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Affiliation(s)
- R A van Emous
- Wageningen Livestock Research, De Elst 1, NL-6708 WD, Wageningen, the Netherlands
| | - A Winkel
- Wageningen Livestock Research, De Elst 1, NL-6708 WD, Wageningen, the Netherlands
| | - A J A Aarnink
- Wageningen Livestock Research, De Elst 1, NL-6708 WD, Wageningen, the Netherlands
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Colmer TD, Winkel A, Kotula L, Armstrong W, Revsbech NP, Pedersen O. Root O 2 consumption, CO 2 production and tissue concentration profiles in chickpea, as influenced by environmental hypoxia. New Phytol 2020; 226:373-384. [PMID: 31838743 DOI: 10.1111/nph.16368] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Accepted: 12/03/2019] [Indexed: 06/10/2023]
Abstract
Roots in flooded soils experience hypoxia, with the least O2 in the vascular cylinder. Gradients in CO2 across roots had not previously been measured. The respiratory quotient (RQ; CO2 produced : O2 consumed) is expected to increase as O2 availability declines. A new CO2 microsensor and an O2 microsensor were used to measure profiles across roots of chickpea seedlings in aerated or hypoxic conditions. Simultaneous, nondestructive flux measurements of O2 consumption, CO2 production, and thus RQ, were taken for roots with declining O2 . Radial profiling revealed severe hypoxia and c. 0.8 kPa CO2 within the root vascular cylinder. The distance penetrated by O2 into the roots was shorter at lower O2 . The gradient in CO2 was in the opposite direction to that of O2 , across the roots and diffusive boundary layer. RQ increased as external O2 was lowered. For chickpea roots in solution at air equilibrium, O2 was very low and CO2 was elevated within the vascular cylinder; the extent of the severely hypoxic core increased as external O2 was reduced. The increased RQ in roots in response to declining external O2 highlighted the shift from respiration to ethanolic fermentation as the severely hypoxic/anoxic core became a progressively greater proportion of the root tissues.
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Affiliation(s)
- Timothy David Colmer
- The UWA School of Agriculture and Environment, Faculty of Science, The University of Western Australia, Crawley, WA, 6009, Australia
- ARC Industrial Transformation Research Hub on Legumes for Sustainable Agriculture, Faculty of Science, The University of Western Australia, 35 Stirling Highway, Crawley, WA, 6009, Australia
| | - Anders Winkel
- Freshwater Biological Laboratory, Department of Biology, University of Copenhagen, Universitetsparken 4, 3rd floor, 2100, Copenhagen, Denmark
| | - Lukasz Kotula
- The UWA School of Agriculture and Environment, Faculty of Science, The University of Western Australia, Crawley, WA, 6009, Australia
- ARC Industrial Transformation Research Hub on Legumes for Sustainable Agriculture, Faculty of Science, The University of Western Australia, 35 Stirling Highway, Crawley, WA, 6009, Australia
| | - William Armstrong
- The UWA School of Agriculture and Environment, Faculty of Science, The University of Western Australia, Crawley, WA, 6009, Australia
- Department of Biological Sciences, University of Hull, Kingston upon Hull, Yorkshire, HU6 7RX, UK
| | - Niels Peter Revsbech
- Department of Bioscience, Aarhus University Centre for Water Technology, Ny Munkegade 114-116, 8000, Aarhus C, Denmark
| | - Ole Pedersen
- The UWA School of Agriculture and Environment, Faculty of Science, The University of Western Australia, Crawley, WA, 6009, Australia
- Freshwater Biological Laboratory, Department of Biology, University of Copenhagen, Universitetsparken 4, 3rd floor, 2100, Copenhagen, Denmark
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Iversen LL, Winkel A, Baastrup-Spohr L, Hinke AB, Alahuhta J, Baattrup-Pedersen A, Birk S, Brodersen P, Chambers PA, Ecke F, Feldmann T, Gebler D, Heino J, Jespersen TS, Moe SJ, Riis T, Sass L, Vestergaard O, Maberly SC, Sand-Jensen K, Pedersen O. Catchment properties and the photosynthetic trait composition of freshwater plant communities. Science 2019; 366:878-881. [DOI: 10.1126/science.aay5945] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Accepted: 10/15/2019] [Indexed: 01/31/2023]
Abstract
Unlike in land plants, photosynthesis in many aquatic plants relies on bicarbonate in addition to carbon dioxide (CO2) to compensate for the low diffusivity and potential depletion of CO2 in water. Concentrations of bicarbonate and CO2 vary greatly with catchment geology. In this study, we investigate whether there is a link between these concentrations and the frequency of freshwater plants possessing the bicarbonate use trait. We show, globally, that the frequency of plant species with this trait increases with bicarbonate concentration. Regionally, however, the frequency of bicarbonate use is reduced at sites where the CO2 concentration is substantially above the air equilibrium, consistent with this trait being an adaptation to carbon limitation. Future anthropogenic changes of bicarbonate and CO2 concentrations may alter the species compositions of freshwater plant communities.
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Affiliation(s)
- L. L. Iversen
- Department of Biology, University of Copenhagen, Copenhagen, Denmark
- School of Life Sciences, Arizona State University, Tempe, AZ, USA
| | - A. Winkel
- Department of Biology, University of Copenhagen, Copenhagen, Denmark
| | - L. Baastrup-Spohr
- Department of Biology, University of Copenhagen, Copenhagen, Denmark
| | - A. B. Hinke
- Department of Biology, University of Copenhagen, Copenhagen, Denmark
| | - J. Alahuhta
- Geography Research Unit, University of Oulu, Oulu, Finland
- Finnish Environment Institute, Helsinki, Finland
| | | | - S. Birk
- Aquatic Ecology, Universität Duisburg-Essen, Duisburg, Germany
| | - P. Brodersen
- Department of Biology, University of Copenhagen, Copenhagen, Denmark
| | - P. A. Chambers
- Environment and Climate Change Canada, Ottawa, ON, Canada
| | - F. Ecke
- Department of Wildlife, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - T. Feldmann
- Institute of Agricultural and Environmental Sciences, Estonian University of Life Sciences, Tartu, Estonia
| | - D. Gebler
- Department of Ecology and Environment, Poznán University of Life Sciences, Poznan, Poland
| | - J. Heino
- Finnish Environment Institute, Helsinki, Finland
| | - T. S. Jespersen
- Niels Bohr Institute, University of Copenhagen, Copenhagen, Denmark
| | - S. J. Moe
- Norwegian Institute for Water Research, Oslo, Norway
| | - T. Riis
- Department of Bioscience, Aarhus University, Aarhus, Denmark
| | - L. Sass
- Prairie Research Institute, University of Illinois, Champaign, IL, USA
| | | | - S. C. Maberly
- Centre for Ecology & Hydrology, Bailrigg, Lancaster, UK
| | - K. Sand-Jensen
- Department of Biology, University of Copenhagen, Copenhagen, Denmark
| | - O. Pedersen
- Department of Biology, University of Copenhagen, Copenhagen, Denmark
- School of Agriculture and Environment, The University of Western Australia, Perth, WA, Australia
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Mikolai C, Ingendoh-Tsakmakidis A, Winkel A, Kommerein N, Falk CS, Rossi A, Walles H, Stiesch M. Session 10: Biofilms Implant related infections. BIOMED ENG-BIOMED TE 2019; 64:63-65. [PMID: 30753148 DOI: 10.1515/bmt-2019-7010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- C Mikolai
- Hannover Medical School, Department of Prosthetic Dentistry and Biomedical Materials Science,Hannover, Germany
| | - A Ingendoh-Tsakmakidis
- Hannover Medical School, Department of Prosthetic Dentistry and Biomedical Materials Science,Hannover, Germany
| | - A Winkel
- Hannover Medical School, Department of Prosthetic Dentistry and Biomedical Materials Science,Hannover, Germany
| | - N Kommerein
- Hannover Medical School, Department of Prosthetic Dentistry and Biomedical Materials Science,Hannover, Germany
| | - C S Falk
- Hannover Medical School, Institute of Transplant Immunology,Hannover, Germany
| | - A Rossi
- Fraunhofer Institute of Silicate Research ISC, Translational Center for Regenerative Therapies,Würzburg, Germany
| | - H Walles
- Fraunhofer Institute of Silicate Research ISC, Translational Center for Regenerative Therapies,Würzburg, Germany.,University Hospital of Würzburg, Chair of Tissue Engineering and Regenerative Medicine,Würzburg, Germany
| | - M Stiesch
- Hannover Medical School, Department of Prosthetic Dentistry and Biomedical Materials Science,Hannover, Germany
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Herzog M, Fukao T, Winkel A, Konnerup D, Lamichhane S, Alpuerto JB, Hasler-Sheetal H, Pedersen O. Physiology, gene expression, and metabolome of two wheat cultivars with contrasting submergence tolerance. Plant Cell Environ 2018; 41:1632-1644. [PMID: 29664146 DOI: 10.1111/pce.13211] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Revised: 03/15/2018] [Accepted: 03/26/2018] [Indexed: 05/05/2023]
Abstract
Responses of wheat (Triticum aestivum) to complete submergence are not well understood as research has focused on waterlogging (soil flooding). The aim of this study was to characterize the responses of 2 wheat cultivars differing vastly in submergence tolerance to test if submergence tolerance was linked to shoot carbohydrate consumption as seen in rice. Eighteen-day-old wheat cultivars Frument (intolerant) and Jackson (tolerant) grown in soil were completely submerged for up to 19 days while assessing responses in physiology, gene expression, and shoot metabolome. Results revealed 50% mortality after 9.3 and 15.9 days of submergence in intolerant Frument and tolerant Jackson, respectively, and significantly higher growth in Jackson during recovery. Frument displayed faster leaf degradation as evident from leaf tissue porosity, chlorophylla , and metabolomic fingerprinting. Surprisingly, shoot soluble carbohydrates, starch, and individual sugars declined to similarly low levels in both cultivars by day 5, showing that cultivar Jackson tolerated longer periods of low shoot carbohydrate levels than Frument. Moreover, intolerant Frument showed higher levels of phytol and the lipid peroxidation marker malondialdehyde relative to tolerant Jackson. Consequently, we propose to further investigate the role of ethylene sensitivity and deprivation of reactive O2 species in submerged wheat.
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Affiliation(s)
- Max Herzog
- The Freshwater Biological Laboratory, Department of Biology, University of Copenhagen, Universitetsparken 4, 3rd floor, Copenhagen, 2100, Denmark
| | - Takeshi Fukao
- Department of Crop and Soil Environmental Sciences, Virginia Tech, 1880 Pratt Drive, Blacksburg, Virginia, 24061, USA
| | - Anders Winkel
- The Freshwater Biological Laboratory, Department of Biology, University of Copenhagen, Universitetsparken 4, 3rd floor, Copenhagen, 2100, Denmark
| | - Dennis Konnerup
- The Freshwater Biological Laboratory, Department of Biology, University of Copenhagen, Universitetsparken 4, 3rd floor, Copenhagen, 2100, Denmark
- Aarhus Institute of Advanced Studies (AIAS), Aarhus University, Høegh-Guldbergs Gade 6B, 8000 Aarhus C, Denmark
| | - Suman Lamichhane
- Department of Crop and Soil Environmental Sciences, Virginia Tech, 1880 Pratt Drive, Blacksburg, Virginia, 24061, USA
| | - Jasper Benedict Alpuerto
- Department of Crop and Soil Environmental Sciences, Virginia Tech, 1880 Pratt Drive, Blacksburg, Virginia, 24061, USA
| | - Harald Hasler-Sheetal
- Nordcee, Department of Biology, University of Southern Denmark, Campusvej 55, Odense, 5230, Denmark
- VILLUM Center for Bioanalytical Sciences, University of Southern Denmark, Odense, 5230, Denmark
| | - Ole Pedersen
- The Freshwater Biological Laboratory, Department of Biology, University of Copenhagen, Universitetsparken 4, 3rd floor, Copenhagen, 2100, Denmark
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Herzog M, Konnerup D, Pedersen O, Winkel A, Colmer TD. Leaf gas films contribute to rice (Oryza sativa) submergence tolerance during saline floods. Plant Cell Environ 2018; 41:885-897. [PMID: 27925226 DOI: 10.1111/pce.12873] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Revised: 11/16/2016] [Accepted: 11/20/2016] [Indexed: 06/06/2023]
Abstract
Floods and salinization of agricultural land adversely impact global rice production. We investigated whether gas films on leaves of submerged rice delay salt entry during saline submergence. Two-week-old plants with leaf gas films (+GF) or with gas films experimentally removed (-GF) were submerged in artificial floodwater with 0 or 50 mm NaCl for up to 16 d. Gas films were present >9 d on GF plants after which gas films were diminished. Tissue ion analysis (Na+ , Cl- and K+ ) showed that gas films caused some delay of Na+ entry, as leaf Na+ concentration was 36-42% higher in -GF leaves than +GF leaves on days 1-5. However, significant net uptakes of Na+ and Cl- , and K+ net loss, occurred despite the presence of gas films, indicating the likely presence of some leaf-to-floodwater contact, so that the gas layer must not have completely separated the leaf surfaces from the water. Natural loss and removal of gas films resulted in severe declines in growth, underwater photosynthesis, chlorophylla and tissue porosity. Submergence was more detrimental to leaf PN and growth than the additional effect of 50 mm NaCl, as salt did not significantly affect underwater PN at 200 μm CO2 nor growth.
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Affiliation(s)
- Max Herzog
- Freshwater Biological Laboratory, Department of Biology, University of Copenhagen, Universitetsparken 4, 3rd floor, 2100, Copenhagen, Denmark
- School of Plant Biology, The University of Western Australia, 35 Stirling Highway, Crawley, 6009, Western Australia, Australia
| | - Dennis Konnerup
- Freshwater Biological Laboratory, Department of Biology, University of Copenhagen, Universitetsparken 4, 3rd floor, 2100, Copenhagen, Denmark
- School of Plant Biology, The University of Western Australia, 35 Stirling Highway, Crawley, 6009, Western Australia, Australia
| | - Ole Pedersen
- Freshwater Biological Laboratory, Department of Biology, University of Copenhagen, Universitetsparken 4, 3rd floor, 2100, Copenhagen, Denmark
- School of Plant Biology, The University of Western Australia, 35 Stirling Highway, Crawley, 6009, Western Australia, Australia
- Institute of Advanced Studies, The University of Western Australia, 35 Stirling Highway, Crawley, 6009, Western Australia, Australia
| | - Anders Winkel
- Freshwater Biological Laboratory, Department of Biology, University of Copenhagen, Universitetsparken 4, 3rd floor, 2100, Copenhagen, Denmark
- School of Plant Biology, The University of Western Australia, 35 Stirling Highway, Crawley, 6009, Western Australia, Australia
| | - Timothy David Colmer
- School of Plant Biology, The University of Western Australia, 35 Stirling Highway, Crawley, 6009, Western Australia, Australia
- Institute of Agriculture, The University of Western Australia, 35 Stirling Highway, Crawley, 6009, Western Australia, Australia
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Winkel A, Herzog M, Konnerup D, Floytrup AH, Pedersen O. Flood tolerance of wheat - the importance of leaf gas films during complete submergence. Funct Plant Biol 2017; 44:888-898. [PMID: 32480617 DOI: 10.1071/fp16395] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Accepted: 03/23/2017] [Indexed: 05/10/2023]
Abstract
Submergence invokes a range of stressors to plants with impeded gas exchange between tissues and floodwater being the greatest challenge. Many terrestrial plants including wheat (Triticum aestivum L.), possess superhydrophobic leaf cuticles that retain a thin gas film when submerged, and the gas films enhance gas exchange with the floodwater. However, leaf hydrophobicity is lost during submergence and the gas films disappear accordingly. Here, we completely submerged wheat (with or without gas films) for up to 14 days and found that plants with gas films survived significantly longer (13 days) than plants without (10 days). Plants with gas films also had less dead tissue following a period of recovery. However, this study also revealed that reflections by gas films resulted in a higher light compensation point for underwater net photosynthesis for leaves with gas films compared with leaves without (IC=52 vs 35µmol photons m-2 s-1 with or without gas films, respectively). Still, already at ~5% of full sunlight the beneficial effect of gas films overcame the negative under ecologically relevant CO2 concentrations. Our study showed that dryland crops also benefit from leaf gas films during submergence and that this trait should be incorporated to improve flood tolerance of wheat.
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Affiliation(s)
- Anders Winkel
- The Freshwater Biological Laboratory, Department of Biology, University of Copenhagen, Universitetsparken 4, 3rd floor, 2100 Copenhagen, Denmark
| | - Max Herzog
- The Freshwater Biological Laboratory, Department of Biology, University of Copenhagen, Universitetsparken 4, 3rd floor, 2100 Copenhagen, Denmark
| | - Dennis Konnerup
- The Freshwater Biological Laboratory, Department of Biology, University of Copenhagen, Universitetsparken 4, 3rd floor, 2100 Copenhagen, Denmark
| | - Anja Heidi Floytrup
- The Freshwater Biological Laboratory, Department of Biology, University of Copenhagen, Universitetsparken 4, 3rd floor, 2100 Copenhagen, Denmark
| | - Ole Pedersen
- The Freshwater Biological Laboratory, Department of Biology, University of Copenhagen, Universitetsparken 4, 3rd floor, 2100 Copenhagen, Denmark
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Konnerup D, Winkel A, Herzog M, Pedersen O. Leaf gas film retention during submergence of 14 cultivars of wheat (Triticum aestivum). Funct Plant Biol 2017; 44:877-887. [PMID: 32480616 DOI: 10.1071/fp16401] [Citation(s) in RCA: 4] [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] [Received: 11/10/2016] [Accepted: 01/31/2017] [Indexed: 06/11/2023]
Abstract
Flooding of fields after sudden rainfall events can result in crops being completely submerged. Some terrestrial plants, including wheat (Triticum aestivum L.), possess superhydrophobic leaf surfaces that retain a thin gas film when submerged, and the gas films enhance gas exchange with the floodwater. However, the leaves lose their hydrophobicity during submergence, and the gas films subsequently disappear. We tested gas film retention time of 14 different wheat cultivars and found that wheat could retain the gas films for a minimum of 2 days, whereas the wild wetland grass Glyceria fluitans (L.) R.Br. had thicker gas films and could retain its gas films for a minimum of 4 days. Scanning electron microscopy showed that the wheat cultivars and G. fluitans possessed high densities of epicuticular wax platelets, which could explain their superhydrophobicity. However, G. fluitans also had papillae that contributed to higher hydrophobicity during the initial submergence and could explain why G. fluitans retained gas films for a longer period of time. The loss of gas films was associated with the leaves being covered by an unidentified substance. We suggest that leaf gas film is a relevant trait to use as a selection criterion to improve the flood tolerance of crops that become temporarily submerged.
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Affiliation(s)
- Dennis Konnerup
- Freshwater Biological Laboratory, Department of Biology, University of Copenhagen, Universitetsparken 4, 3rd floor, 2100 Copenhagen, Denmark
| | - Anders Winkel
- Freshwater Biological Laboratory, Department of Biology, University of Copenhagen, Universitetsparken 4, 3rd floor, 2100 Copenhagen, Denmark
| | - Max Herzog
- Freshwater Biological Laboratory, Department of Biology, University of Copenhagen, Universitetsparken 4, 3rd floor, 2100 Copenhagen, Denmark
| | - Ole Pedersen
- Freshwater Biological Laboratory, Department of Biology, University of Copenhagen, Universitetsparken 4, 3rd floor, 2100 Copenhagen, Denmark
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Pellegrini E, Konnerup D, Winkel A, Casolo V, Pedersen O. Contrasting oxygen dynamics in Limonium narbonense and Sarcocornia fruticosa during partial and complete submergence. Funct Plant Biol 2017; 44:867-876. [PMID: 32480615 DOI: 10.1071/fp16369] [Citation(s) in RCA: 4] [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] [Received: 10/25/2016] [Accepted: 05/05/2017] [Indexed: 06/11/2023]
Abstract
Terrestrial saltmarsh plants inhabiting flood-prone habitats undergo recurrent and prolonged flooding driven by tidal regimes. In this study, the role of internal plant aeration in contrasting hypoxic/anoxic conditions during submergence was investigated in the two halophytes Limonium narbonense Mill. and Sarcocornia fruticosa (L.) A.J. Scott. Monitoring of tissue O2 dynamics was performed in shoots and roots using microelectrodes under drained conditions, waterlogging, partial and complete submergence, in light or darkness. For both species, submergence in darkness resulted in significant declines in tissue O2 status and when in light, in rapid O2 increases first in shoot tissues and subsequently in roots. During partial submergence, S. fruticosa benefitted from snorkelling and efficiently transported O2 to roots, whereas the O2 concentration in roots of L. narbonense declined by more than 90%. Significantly thinner leaves and articles were recorded under high degree of flooding stress and both species showed considerably high tissue porosity. The presence of aerenchyma seemed to support internal aeration in S. fruticosa whereas O2 diffusion in L. narbonense seemed impeded, despite the higher porosity (up to 50%). Thus, the results obtained for L. narbonense, being well adapted to flooding, suggests that processes other than internal aeration could be involved in better flooding tolerance e.g. fermentative processes, and that traits resulting in flooding tolerance in plants are not yet fully understood.
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Affiliation(s)
- Elisa Pellegrini
- Plant Biology Unit, Department of Agricultural, Food, Environmental and Animal Science, University of Udine, via delle Scienze 206, 33100 Udine, Italy
| | - Dennis Konnerup
- Freshwater Biological Laboratory, Department of Biology, University of Copenhagen, Universitetsparken 4, 2100 Copenhagen, Denmark
| | - Anders Winkel
- Freshwater Biological Laboratory, Department of Biology, University of Copenhagen, Universitetsparken 4, 2100 Copenhagen, Denmark
| | - Valentino Casolo
- Plant Biology Unit, Department of Agricultural, Food, Environmental and Animal Science, University of Udine, via delle Scienze 206, 33100 Udine, Italy
| | - Ole Pedersen
- Freshwater Biological Laboratory, Department of Biology, University of Copenhagen, Universitetsparken 4, 2100 Copenhagen, Denmark
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Winkel A, Jakschik J. Penetrierendes aortoiliakales Ulkus und dessen Versorgung. Zentralbl Chir 2016; 141:533-534. [PMID: 24307232 DOI: 10.1055/s-0033-1350856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- A Winkel
- Urologie, Prosper-Hospital Recklinghausen, Deutschland
| | - J Jakschik
- Chirurgie, Prosper-Hospital Recklinghausen, Deutschland
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Winkel A, van Riel JW, van Emous RA, Aarnink AJA, Groot Koerkamp PWG, Ogink NWM. Abatement of particulate matter emission from experimental aviary housings for laying hens by spraying rapeseed oil. Poult Sci 2016; 95:2836-2848. [PMID: 27601685 DOI: 10.3382/ps/pew261] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Revised: 02/10/2016] [Accepted: 06/16/2016] [Indexed: 11/20/2022] Open
Abstract
In alternative systems for laying hens, concentrations and emission rates of particulate matter (PM) give reason for concern with regard to working conditions, bird health and productivity, and health of residents living near farms. Previously, we found that spraying a film of rapeseed oil onto the litter of broilers could substantially reduce PM concentrations and emissions. The objective of this study was to establish dose-response effects of oil spraying in aviaries on concentrations and emission rates of PM with aerodynamic diameters less than 10 μm (PM10) and 2.5 μm (PM2.5), on stockmen's exposure to PM10, on egg production, exterior quality and behavior of the hens, and on the litter. An experiment was carried out with 4 treatments: 0 (control), 15, 30, and 45 mL/m2 per d (oil treatments). Each treatment was applied in 2 rooms with different aviary systems (8 rooms in total). The experiment was repeated during a second period, both lasting 35 days. From d 11 to d 35, oil was applied daily using a spraying gun. Applying 15, 30, or 45 mL/m2 per d significantly reduced emission rates of PM10 by 27, 62, and 82%, and emission rates of PM2.5 by 71, 83, and 94%, respectively. No significant effects of oil spraying were found on mortality, egg production, dust bathing behavior, scratching behavior, plumage soiling, DM content of the litter, or friability of the litter. A significant worsening of the plumage condition was found only for the body spot back/wings/tail (not for: throat/neck, chest/breast, or legs) in the 45 mL/m2 per d treatment. Egg quality shifted significantly towards more second-class eggs in the oil treatments (1.9% versus 1.4%; P = 0.004). Remarkably, foot soiling decreased with increasing oil application. In conclusion, PM concentrations and emission rates in aviaries can be effectively reduced by spraying 15 to 30 mL/m2 per d with minor side effects within a 25 d application period.
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Affiliation(s)
- A Winkel
- Wageningen University and Research Centre, Livestock Research, P.O. Box 338, 6700 AH Wageningen, the Netherlands
| | - J W van Riel
- Wageningen University and Research Centre, Livestock Research, P.O. Box 338, 6700 AH Wageningen, the Netherlands
| | - R A van Emous
- Wageningen University and Research Centre, Livestock Research, P.O. Box 338, 6700 AH Wageningen, the Netherlands
| | - A J A Aarnink
- Wageningen University and Research Centre, Livestock Research, P.O. Box 338, 6700 AH Wageningen, the Netherlands
| | - P W G Groot Koerkamp
- Wageningen University and Research Centre, Livestock Research, P.O. Box 338, 6700 AH Wageningen, the Netherlands.,Wageningen University, Farm Technology Group, P.O. Box 16, 6700 AA Wageningen, the Netherlands
| | - N W M Ogink
- Wageningen University and Research Centre, Livestock Research, P.O. Box 338, 6700 AH Wageningen, the Netherlands
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Winkel A, Visser EJW, Colmer TD, Brodersen KP, Voesenek LACJ, Sand-Jensen K, Pedersen O. Leaf gas films, underwater photosynthesis and plant species distributions in a flood gradient. Plant Cell Environ 2016; 39:1537-1548. [PMID: 26846194 DOI: 10.1111/pce.12717] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Revised: 01/18/2016] [Accepted: 01/18/2016] [Indexed: 06/05/2023]
Abstract
Traits for survival during flooding of terrestrial plants include stimulation or inhibition of shoot elongation, aerenchyma formation and efficient gas exchange. Leaf gas films form on superhydrophobic cuticles during submergence and enhance underwater gas exchange. The main hypothesis tested was that the presence of leaf gas films influences the distribution of plant species along a natural flood gradient. We conducted laboratory experiments and field observations on species distributed along a natural flood gradient. We measured presence or absence of leaf gas films and specific leaf area of 95 species. We also measured, gas film retention time during submergence and underwater net photosynthesis and dark respiration of 25 target species. The presence of a leaf gas film was inversely correlated to flood frequency and duration and reached a maximum value of 80% of the species in the rarely flooded locations. This relationship was primarily driven by grasses that all, independently of their field location along the flood gradient, possess gas films when submerged. Although the present study and earlier experiments have shown that leaf gas films enhance gas exchange of submerged plants, the ability of species to form leaf gas films did not show the hypothesized relationship with species composition along the flood gradient.
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Affiliation(s)
- Anders Winkel
- School of Plant Biology, The University of Western Australia, Crawley, 6009, Western Australia, Australia
- Freshwater Biological Laboratory, Department of Biology, University of Copenhagen, Universitetsparken 4, 3rd floor, 2100, Copenhagen, Denmark
| | - Eric J W Visser
- Experimental Plant Ecology, Institute for Water and Wetland Research, Radboud University Nijmegen, Heyendaalseweg 135, 6525 AJ, Nijmegen, The Netherlands
| | - Timothy D Colmer
- School of Plant Biology, The University of Western Australia, Crawley, 6009, Western Australia, Australia
| | - Klaus P Brodersen
- Freshwater Biological Laboratory, Department of Biology, University of Copenhagen, Universitetsparken 4, 3rd floor, 2100, Copenhagen, Denmark
| | - Laurentius A C J Voesenek
- Institute of Environmental Biology, Utrecht University, Padualaan 8, 3584 CH, Utrecht, The Netherlands
| | - Kaj Sand-Jensen
- Freshwater Biological Laboratory, Department of Biology, University of Copenhagen, Universitetsparken 4, 3rd floor, 2100, Copenhagen, Denmark
| | - Ole Pedersen
- School of Plant Biology, The University of Western Australia, Crawley, 6009, Western Australia, Australia
- Freshwater Biological Laboratory, Department of Biology, University of Copenhagen, Universitetsparken 4, 3rd floor, 2100, Copenhagen, Denmark
- Institute of Advanced Studies, The University of Western Australia, Crawley, 6009, Western Australia, Australia
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16
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Eberhard J, Stumpp N, Winkel A, Schrimpf C, Bisdas T, Orzak P, Teebken OE, Haverich A, Stiesch M. Streptococcus mitis and Gemella haemolysans were simultaneously found in atherosclerotic and oral plaques of elderly without periodontitis-a pilot study. Clin Oral Investig 2016; 21:447-452. [PMID: 27037569 DOI: 10.1007/s00784-016-1811-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [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: 04/29/2015] [Accepted: 03/23/2016] [Indexed: 01/19/2023]
Abstract
OBJECTIVES Local infections may contribute to the initiation and progression of several clinical diseases in humans. Atherosclerotic plaques of subjects suffering from periodontitis are colonized by periopathogens; however, the presence of bacteria in atherosclerotic plaques in patients without severe forms of periodontitis is of high relevance for the general population. MATERIALS AND METHODS Patients who were electively treated for atherosclerotic lesions of the carotid artery and without clinical signs of periodontitis were eligible for the study. Oral and atherosclerotic plaques were sampled, processed, and analyzed for their microbial composition by 454-sequencing. RESULTS Seventeen patients were included in the analyses, and 76 % of all atherosclerotic plaque specimens were positive for bacterial DNA. In the oral plaques, 76,532 sequences were identified representing 1 phylum, 17 classes, 112 families, and 263 genera. In atherosclerotic plaques, 6112 sequences representing 1 phylum, 4 classes, 8 families, and 36 genera were found. The bacterial DNAs of the species Gemella haemolysans and Streptococcus mitis were simultaneously found in atherosclerotic as well as oral plaque samples of 3 patients. CONCLUSIONS These results indicated that in subjects without periodontitis, the transmission of oral bacteria to atherosclerotic plaques of the carotid artery is a feasible event. CLINICAL RELEVANCE The prevention of transient bacteremia from the oral cavity requires high levels of oral health.
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Affiliation(s)
- J Eberhard
- Department of Prosthetic Dentistry and Biomaterial Sciences, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany. .,Faculty of Dentistry, The University of Sydney, Sydney, New South Wales, Australia.
| | - N Stumpp
- Department of Prosthetic Dentistry and Biomaterial Sciences, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany
| | - A Winkel
- Department of Prosthetic Dentistry and Biomaterial Sciences, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany
| | - C Schrimpf
- Department of Cardiothoracic, Transplantation and Vascular Surgery, Hannover Medical School, Hannover, Germany
| | - T Bisdas
- Department of Cardiothoracic, Transplantation and Vascular Surgery, Hannover Medical School, Hannover, Germany
| | - P Orzak
- Department of Cardiothoracic, Transplantation and Vascular Surgery, Hannover Medical School, Hannover, Germany
| | - O E Teebken
- Department of Cardiothoracic, Transplantation and Vascular Surgery, Hannover Medical School, Hannover, Germany
| | - A Haverich
- Department of Cardiothoracic, Transplantation and Vascular Surgery, Hannover Medical School, Hannover, Germany
| | - M Stiesch
- Department of Prosthetic Dentistry and Biomaterial Sciences, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany
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Winkel A, Jakschik J, Kusche D. [Scrotal Mass as a Rare Initial Manifestation of Necrotising Pancreatitis]. Aktuelle Urol 2015; 46:309-10. [PMID: 26227132 DOI: 10.1055/s-0035-1548877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
A scrotal mass as initial manifestation of necrotising pancreatitis is very rare. In addition, the diagnosis is very difficult because diseases that occur more frequently produce similar symptoms. Therefore, it is very important to think about rare entities in the differential diagnosis for testicular pain.
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Affiliation(s)
- A. Winkel
- Klinik für Urologie und Zentrum für minimalinvasive/robotische Chirurgie Prosper-Hospital, Recklinghausen
| | - J. Jakschik
- Klinik für Allgemein-, Thorax-, Gefäß- und Viszeralchirurgie Prosper-Hospital, Recklinghausen
| | - D. Kusche
- Klinik für Urologie und Zentrum für minimalinvasive/robotische Chirurgie Prosper-Hospital, Recklinghausen
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Dommisch H, Staufenbiel I, Schulze K, Stiesch M, Winkel A, Fimmers R, Dommisch J, Jepsen S, Miosge N, Adam K, Eberhard J. Expression of antimicrobial peptides and interleukin-8 during early stages of inflammation: An experimental gingivitis study. J Periodontal Res 2015; 50:836-45. [DOI: 10.1111/jre.12271] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/02/2015] [Indexed: 11/28/2022]
Affiliation(s)
- H. Dommisch
- Department of Periodontology and Synoptic Dentistry; Charité - University Medicine Berlin; Berlin Germany
- Department of Oral Health Sciences; Health Science Center; University of Washington; Seattle WA USA
- Department of Periodontology, Operative and Preventive Dentistry; University Hospital Bonn; Bonn Germany
| | - I. Staufenbiel
- Department of Conservative Dentistry, Periodontology and Preventive Dentistry; Hannover Medical School; Hannover Germany
| | - K. Schulze
- Clinic for Dental Prosthetics and Biomedical Materials Science; Hannover Medical School; Hannover Germany
| | - M. Stiesch
- Clinic for Dental Prosthetics and Biomedical Materials Science; Hannover Medical School; Hannover Germany
| | - A. Winkel
- Clinic for Dental Prosthetics and Biomedical Materials Science; Hannover Medical School; Hannover Germany
| | - R. Fimmers
- Institute of Medical Biometry; Informatics and Epidemiology; University of Bonn; Bonn Germany
| | - J. Dommisch
- Department of Periodontology, Operative and Preventive Dentistry; University Hospital Bonn; Bonn Germany
| | - S. Jepsen
- Department of Periodontology, Operative and Preventive Dentistry; University Hospital Bonn; Bonn Germany
| | - N. Miosge
- Research Group for Oral Biology and Tissue Regeneration; Department of Prosthetic Dentistry; University Hospital Göttingen; Göttingen Germany
| | - K. Adam
- Clinic for Dental Prosthetics and Biomedical Materials Science; Hannover Medical School; Hannover Germany
| | - J. Eberhard
- Clinic for Dental Prosthetics and Biomedical Materials Science; Hannover Medical School; Hannover Germany
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Lauridsen T, Glavina K, Colmer TD, Winkel A, Irvine S, Lefmann K, Feidenhans'l R, Pedersen O. Visualisation by high resolution synchrotron X-ray phase contrast micro-tomography of gas films on submerged superhydrophobic leaves. J Struct Biol 2014; 188:61-70. [PMID: 25175398 DOI: 10.1016/j.jsb.2014.08.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2014] [Revised: 08/08/2014] [Accepted: 08/15/2014] [Indexed: 10/24/2022]
Abstract
Floods can completely submerge terrestrial plants but some wetland species can sustain O2 and CO2 exchange with the environment via gas films forming on superhydrophobic leaf surfaces. We used high resolution synchrotron X-ray phase contrast micro-tomography in a novel approach to visualise gas films on submerged leaves of common cordgrass (Spartina anglica). 3D tomograms enabled a hitherto unmatched level of detail regarding the micro-topography of leaf gas films. Gas films formed only on the superhydrophobic adaxial leaf side (water droplet contact angle, Φ=162°) but not on the abaxial side (Φ=135°). The adaxial side of the leaves of common cordgrass is plicate with a longitudinal system of parallel grooves and ridges and the vast majority of the gas film volume was found in large ∼180μm deep elongated triangular volumes in the grooves and these volumes were connected to each neighbouring groove via a fine network of gas tubules (∼1.7μm diameter) across the ridges. In addition to the gas film retained on the leaf exterior, the X-ray phase contrast micro-tomography also successfully distinguished gas spaces internally in the leaf tissues, and the tissue porosity (gas volume per unit tissue volume) ranged from 6.3% to 20.3% in tip and base leaf segments, respectively. We conclude that X-ray phase contrast micro-tomography is a powerful tool to obtain quantitative data of exterior gas features on biological samples because of the significant difference in electron density between air, biological tissues and water.
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Affiliation(s)
- Torsten Lauridsen
- Niels Bohr Institute, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen, Denmark
| | - Kyriaki Glavina
- Niels Bohr Institute, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen, Denmark
| | - Timothy David Colmer
- School of Plant Biology, The University of Western Australia, 35 Stirling Highway, Crawley, 6009 WA, Australia
| | - Anders Winkel
- School of Plant Biology, The University of Western Australia, 35 Stirling Highway, Crawley, 6009 WA, Australia; The Freshwater Biological Laboratory, University of Copenhagen, Universitetsparken 4, 3rd Floor, 2100 Copenhagen, Denmark
| | - Sarah Irvine
- Laboratory for Macromolecules and Bioimaging, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland; Faculty of Biology and Medicine, University of Lausanne, 1015 Lausanne, Switzerland; Laboratory for Dynamic Imaging, Monash University, 3800 VIC, Australia
| | - Kim Lefmann
- Niels Bohr Institute, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen, Denmark
| | - Robert Feidenhans'l
- Niels Bohr Institute, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen, Denmark
| | - Ole Pedersen
- School of Plant Biology, The University of Western Australia, 35 Stirling Highway, Crawley, 6009 WA, Australia; The Freshwater Biological Laboratory, University of Copenhagen, Universitetsparken 4, 3rd Floor, 2100 Copenhagen, Denmark; Institute of Advanced Studies, The University of Western Australia, 35 Stirling Highway, Crawley, 6009 WA, Australia.
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20
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Abstract
The scrotal leiomyoma is a rare benign tumour, deriving from the smooth muscle. This tumour entity constitutes a differential diagnosis to malignant testicular tumours. Up to now, only 8 cases have been reported in the literature. We report on a 63-year-old European patient, presenting in our clinic for further treatment with a now monstrous mass of the left testis (about 8 kg) that has been growing for about 30 years, After partial scrotalectomy and orchiectomy pathological analysis confirmed a left-sided leiomyoma of the testicular/paratestical tissue. This case shows that even rare tumours should be included in the differential diagnosis of a testicular tumour.
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Affiliation(s)
- A. Winkel
- Klinik für Urologie und Zentrum für minimalinvasive/robotische Chirurgie, Prosperhospital Recklinghausen
| | | | - D. Kusche
- Klinik für Urologie und Zentrum für minimalinvasive/robotische Chirurgie, Prosperhospital Recklinghausen
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21
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Winkel A, Pedersen O, Ella E, Ismail AM, Colmer TD. Gas film retention and underwater photosynthesis during field submergence of four contrasting rice genotypes. J Exp Bot 2014; 65:3225-33. [PMID: 24759881 PMCID: PMC4071835 DOI: 10.1093/jxb/eru166] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Floods can completely submerge some rice (Oryza sativa L.) fields. Leaves of rice have gas films that aid O2 and CO2 exchange under water. The present study explored the relationship between gas film persistence and underwater net photosynthesis (PN) as influenced by genotype and submergence duration. Four contrasting genotypes (FR13A, IR42, Swarna, and Swarna-Sub1) were submerged for 13 days in the field and leaf gas films, chlorophyll, and the capacity for underwater PN at near ambient and high CO2 were assessed with time of submergence. At high CO2 during the PN assay, all genotypes initially showed high rates of underwater PN, and this rate was not affected by time of submergence in FR13A. This superior photosynthetic performance of FR13A was not evident in Swarna-Sub1 (carrying the SUB1 QTL) and the declines in underwater PN in both Swarna-Sub1 and Swarna were equal to that in IR42. At near ambient CO2 concentration, underwater PN declined in all four genotypes and this corresponded with loss of leaf gas films with time of submergence. FR13A retained leaf gas films moderately longer than the other genotypes, but gas film retention was not linked to SUB1. Diverse rice germplasm should be screened for gas film persistence during submergence, as this trait could potentially increase carbohydrate status and internal aeration owing to increased underwater PN, which contributes to submergence tolerance in rice.
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Affiliation(s)
- Anders Winkel
- School of Plant Biology, The University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia Freshwater Biological Laboratory, Department of Biology, University of Copenhagen, Universitetsparken 4, 3rd floor, 2100 Copenhagen, Denmark
| | - Ole Pedersen
- School of Plant Biology, The University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia Institute of Advanced Studies, The University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia Freshwater Biological Laboratory, Department of Biology, University of Copenhagen, Universitetsparken 4, 3rd floor, 2100 Copenhagen, Denmark
| | - Evangelina Ella
- International Rice Research Institute, DAPO Box 7777, Metro Manila, the Philippines
| | - Abdelbagi M Ismail
- International Rice Research Institute, DAPO Box 7777, Metro Manila, the Philippines
| | - Timothy D Colmer
- School of Plant Biology, The University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia
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22
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Winkel A, Colmer TD, Ismail AM, Pedersen O. Internal aeration of paddy field rice (Oryza sativa) during complete submergence---importance of light and floodwater O2. New Phytol 2013; 197:1193-1203. [PMID: 23215967 DOI: 10.1111/nph.12048] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2012] [Accepted: 10/14/2012] [Indexed: 05/21/2023]
Abstract
Flash floods can submerge paddy field rice (Oryza sativa), with adverse effects on internal aeration, sugar status and survival. Here, we investigated the in situ aeration of roots of rice during complete submergence, and elucidated how underwater photosynthesis and floodwater pO(2) influence root aeration in anoxic soil. In the field, root pO(2) was measured using microelectrodes during 2 d of complete submergence. Leaf gas films that formed on the superhydrophobic leaves were left intact, or experimentally removed, to elucidate their effect on internal aeration. In darkness, root pO(2) declined to very low concentrations (0.24 kPa) and was strongly correlated with floodwater pO(2). In light, root pO(2) was high (14 kPa) and primarily a function of the incident light determining the rates of underwater net photosynthesis. Plants with intact leaf gas films maintained higher underwater net photosynthesis relative to plants without gas films when the submerged shoots were in light. During complete submergence, internal aeration of rice in the field relies on underwater photosynthesis during the day and entry of O(2) from the floodwater during the night. Leaf gas films enhance photosynthesis during submergence leading to improved O(2) production and sugar status, and therefore contribute to the submergence tolerance of rice.
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Affiliation(s)
- Anders Winkel
- School of Plant Biology and the UWA Institute of Agriculture, The University of Western Australia, 35 Stirling Highway, Crawley, WA, 6009, Australia
- Freshwater Biological Laboratory, Department of Biology, University of Copenhagen, Helsingørsgade 51, DK-3400, Hillerød, Denmark
| | - Timothy D Colmer
- School of Plant Biology and the UWA Institute of Agriculture, The University of Western Australia, 35 Stirling Highway, Crawley, WA, 6009, Australia
| | - Abdelbagi M Ismail
- International Rice Research Institute, DAPO Box 7777, Metro Manila, the Philippines
| | - Ole Pedersen
- School of Plant Biology and the UWA Institute of Agriculture, The University of Western Australia, 35 Stirling Highway, Crawley, WA, 6009, Australia
- Freshwater Biological Laboratory, Department of Biology, University of Copenhagen, Helsingørsgade 51, DK-3400, Hillerød, Denmark
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Ismail F, Baetzner C, Heuer W, Stumpp N, Eberhard J, Winkel A, Ismail I, Haverich A, Stiesch M. 16S rDNA-based metagenomic analysis of human oral plaque microbiota in patients with atherosclerosis and healthy controls. Indian J Med Microbiol 2012. [DOI: 10.4103/0255-0857.103771] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Stucht L, Olczak-Warnat C, Winkel A, Faber P, Kusche D. [The laparoscopic left-sided renal tumor enucleation with synchronous cyst removal in the right kidney without changing port positions]. Urologe A 2012; 51:987-90. [PMID: 22695974 DOI: 10.1007/s00120-012-2867-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Bilateral synchronous kidney alterations which need to be treated surgically are rare. Nevertheless, they are known and present a difficult situation with respect to the access and type of operation. Conventional open surgery (laparotomy, bilateral flank incisions) is always combined with severe tissue trauma, whereas minimally invasive techniques are often chosen for patients with little previous surgery and less complicated pathology. It is believed that especially for synchronous bilateral kidney surgery, laparoscopy is a very good option even if patients have had extensive previous surgery.
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Affiliation(s)
- L Stucht
- Klinik für Urologie und Zentrum für Minimalinvasive/Robotische Chirurgie, Prosper-Hospital Recklinghausen, Mühlenstraße 27, 45659 Recklinghausen, Deutschland.
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Abstract
Gas films on hydrophobic surfaces of leaves of some wetland plants can improve O(2) and CO(2) exchange when completely submerged during floods. Here we investigated the in situ aeration of rhizomes of cordgrass (Spartina anglica) during natural tidal submergence, with focus on the role of leaf gas films on underwater gas exchange. Underwater net photosynthesis was also studied in controlled laboratory experiments. In field experiments, O(2) microelectrodes were inserted into rhizomes and pO(2) measured throughout two tidal submergence events; one during daylight and one during night-time. Plants had leaf gas films intact or removed. Rhizome pO(2) dropped significantly during complete submergence and most severely during night. Leaf gas films: (1) enhanced underwater photosynthesis and pO(2) in rhizomes remained above 10 kPa during submergence in light; and (2) facilitated O(2) entry from the water into leaves so that rhizome pO(2) was about 5 kPa during darkness. This study is the first in situ demonstration of the beneficial effects of leaf gas films on internal aeration in a submerged wetland plant. Leaf gas films likely contribute to submergence tolerance of S. anglica and this feature is expected to also benefit other wetland plant species when submerged.
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Affiliation(s)
- Anders Winkel
- School of Plant Biology (M084), Faculty of Natural and Agricultural Sciences, The University of Western Australia, Crawley, WA 6009, Australia.
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Colmer TD, Winkel A, Pedersen O. A perspective on underwater photosynthesis in submerged terrestrial wetland plants. AoB Plants 2011; 2011:plr030. [PMID: 22476500 PMCID: PMC3249690 DOI: 10.1093/aobpla/plr030] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2011] [Accepted: 11/23/2011] [Indexed: 05/03/2023]
Abstract
BACKGROUND AND AIMS Wetland plants inhabit flood-prone areas and therefore can experience episodes of complete submergence. Submergence impedes exchange of O(2) and CO(2) between leaves and the environment, and light availability is also reduced. The present review examines limitations to underwater net photosynthesis (P(N)) by terrestrial (i.e. usually emergent) wetland plants, as compared with submerged aquatic plants, with focus on leaf traits for enhanced CO(2) acquisition. SCOPE Floodwaters are variable in dissolved O(2), CO(2), light and temperature, and these parameters influence underwater P(N) and the growth and survival of submerged plants. Aquatic species possess morphological and anatomical leaf traits that reduce diffusion limitations to CO(2) uptake and thus aid P(N) under water. Many aquatic plants also have carbon-concentrating mechanisms to increase CO(2) at Rubisco. Terrestrial wetland plants generally lack the numerous beneficial leaf traits possessed by aquatic plants, so submergence markedly reduces P(N). Some terrestrial species, however, produce new leaves with a thinner cuticle and higher specific leaf area, whereas others have leaves with hydrophobic surfaces so that gas films are retained when submerged; both improve CO(2) entry. CONCLUSIONS Submergence inhibits P(N) by terrestrial wetland plants, but less so in species that produce new leaves under water or in those with leaf gas films. Leaves with a thinner cuticle, or those with gas films, have improved gas diffusion with floodwaters, so that underwater P(N) is enhanced. Underwater P(N) provides sugars and O(2) to submerged plants. Floodwaters often contain dissolved CO(2) above levels in equilibrium with air, enabling at least some P(N) by terrestrial species when submerged, although rates remain well below those in air.
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Affiliation(s)
- Timothy D. Colmer
- School of Plant Biology, The University of Western Australia, Crawley 6009, WA, Australia
| | - Anders Winkel
- School of Plant Biology, The University of Western Australia, Crawley 6009, WA, Australia
- Freshwater Biological Laboratory, University of Copenhagen, Helsingørsgade 51, 3400 Hillerød, Denmark
| | - Ole Pedersen
- School of Plant Biology, The University of Western Australia, Crawley 6009, WA, Australia
- Freshwater Biological Laboratory, University of Copenhagen, Helsingørsgade 51, 3400 Hillerød, Denmark
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Winkel A, Joist A. Schmerzreduktion bei tumorösen Wirbelkörperfrakturen durch Kombination von dorsaler Instrumentierung und Kyphoplastie. Zentralbl Chir 2011. [DOI: 10.1055/s-0031-1289010] [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: 10/16/2022]
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Winkel A, Ückert F. Projekt KONI-internetbasierte Aufklärung für krebskranke Kinder im Alter von 8 bis 14 Jahren. Klin Padiatr 2011. [DOI: 10.1055/s-0031-1273919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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29
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Zamecnik P, Krafft AJ, Maier F, de Oliveira A, Zechmann C, Winkel A, Schlemmer HP, Bock M. MR-gesteuerte laser-induzierte Thermoablation (LITT) von Leberläsionen unter Verwendung von Echtzeitsequenzen. ROFO-FORTSCHR RONTG 2010. [DOI: 10.1055/s-0030-1268298] [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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Abstract
BACKGROUND AND AIMS Submersed plants have different strategies to overcome inorganic carbon limitation. It is generally assumed that only small rosette species (isoetids) are able to utilize the high sediment CO(2) availability. The present study examined to what extent five species of submersed freshwater plants with different morphology and growth characteristics (Lobelia dortmanna, Lilaeopsis macloviana, Ludwigia repens, Vallisneria americana and Hydrocotyle verticillata) are able to support photosynthesis supplied by uptake of CO(2) from the sediment. METHODS Gross photosynthesis was measured in two-compartment split chambers with low inorganic carbon availability in leaf compartments and variable CO(2) availability (0 to >8 mmol L(-1)) in root compartments. Photosynthetic rates based on root-supplied CO(2) were compared with maximum rates obtained at saturating leaf CO(2) availability, and (14)C experiments were conducted for two species to localize bottlenecks for utilization of sediment CO(2). KEY RESULTS All species except Hydrocotyle were able to use sediment CO(2), however, with variable efficiency, and with the isoetid, Lobelia, as clearly the most effective and the elodeid, Ludwigia, as the least efficient. At a water column CO(2) concentration in equilibrium with air, Lobelia, Lilaeopsis and Vallisneria covered >75% of their CO(2) requirements by sediment uptake, and sediment CO(2) contributed substantially to photosynthesis at water CO(2) concentrations up to 1000 micromol L(-1). For all species except Ludwigia, the shoot to root ratio on an areal basis was the single factor best explaining variability in the importance of sediment CO(2). For Ludwigia, diffusion barriers limited uptake or transport from roots to stems and transport from stems to leaves. CONCLUSIONS Submersed plants other than isoetids can utilize sediment CO(2), and small and medium sized elodeids with high root to shoot area in particular may benefit substantially from uptake of sediment CO(2) in low alkaline lakes.
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Affiliation(s)
| | - Jens Borum
- Freshwater Biological Laboratory, Biological Institute, University of Copenhagen, Helsingørsgade 51, DK-3400-Hillerød, Denmark.
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Engelhard K, Hollenbach HP, Winkel A, Engehausen D. Transrektale MRT-gesteuerte Prostatastanze in Rückenlage bei 1,5 T. ROFO-FORTSCHR RONTG 2007. [DOI: 10.1055/s-2007-976969] [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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Engelhard K, Hollenbach HP, Kiefer B, Winkel A, Goeb K, Engehausen D. Prostate biopsy in the supine position in a standard 1.5-T scanner under real time MR-imaging control using a MR-compatible endorectal biopsy device. Eur Radiol 2006; 16:1237-43. [PMID: 16447048 DOI: 10.1007/s00330-005-0100-6] [Citation(s) in RCA: 93] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2005] [Revised: 11/14/2005] [Accepted: 11/25/2005] [Indexed: 11/27/2022]
Abstract
Thirty-seven consecutive patients with elevated PSA levels and negative tumor prostate biopsies underwent a MR-guided prostate biopsy in a 1.5-T scanner in the supine position. After localization of suspected tumor areas using an endorectal coil and two body-phased array coils, the biopsy device was positioned without any repositioning of the patient. The biopsy device consisted of a mount, a ball joint, a positioning stage and an insertion stage with a needle guide, which was filled with a MR-visible fluid to control positioning of the needle using a balanced steady-state free precession sequence (TrueFISP) and a high-resolution turbo spin echo (T2-TSE) sequence. Core biopsies were taken manually in the magnet. The biopsy needle could be correctly positioned in all cases. Suspected lesions with a diameter > or =10 mm could be successfully punctured. Four to nine (mean = 6) biopsies were taken per patient. In 14 patients, prostate cancer was confirmed at histology. Twenty-four biopsies positive for cancer were performed in 14 patients. A correct correlation was found between the site of biopsy and histology. MR-guided prostate biopsy can be effective in increasing primary positive tumor biopsy results in patients with a history of negative tumor TRUS-guided prostate biopsies.
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Affiliation(s)
- K Engelhard
- Radiologische Abteilung, Krankenhaus Martha-Maria, Stadenstr. 59, 90491 Nürnberg, Germany.
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Winkel A, Proske G. Über die elektrolytische Reduktion organischer Verbindungen an der Quecksilber-Tropfelektrode (II. Mitteil.). ACTA ACUST UNITED AC 2006. [DOI: 10.1002/cber.19360690823] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Winkel A, Proske G. Über die elektrolytische Reduktion organischer Verbindungen an der Quecksilber-Tropfelektrode (I. Mitteil.). ACTA ACUST UNITED AC 2006. [DOI: 10.1002/cber.19360690413] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Beyersdorff D, Winkel A, Lenk S, Loening SA, Hamm B, Taupitz M. MRT-gesteuerte Prostatabiopsie im geschlossenen MRT bei 1.5 Tesla: Erste Ergebnisse. ROFO-FORTSCHR RONTG 2005. [DOI: 10.1055/s-2005-867535] [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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Werner R, Schaeffter T, Winkel A, Nabavi A, Frahm C. MRT-geführte Mammabiopsie mit aktiven Markern. ROFO-FORTSCHR RONTG 2004. [DOI: 10.1055/s-2004-827925] [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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Fritzsch D, Scholz R, Werner A, Gründer W, Winkel A, Kahn T. [Use of a newly developed piezoelectrically driven drilling machine for MR-guided bone biopsies]. ROFO-FORTSCHR RONTG 2002; 174:1309-12. [PMID: 12375208 DOI: 10.1055/s-2002-34555] [Citation(s) in RCA: 7] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
PURPOSE Development and clinical testing of an MR-compatible bone biopsy system, to enable the sample collection from osteosclerotic or subcortical lesions for histological investigation under MR control. MATERIALS AND METHODS A piezoelectrically driven drilling machine was constructed and tested in connection with an MR-compatible bone biopsy set in a vertical open MR scanner (0.5 T) on a phantom and 10 patients with ambiguous bone lesions. Images were obtained using T(1)-weighted spin-echo sequences and, in case of real-time imaging, a fast spoiled gradient-echo sequence. RESULTS The influence of the enabled motor (RF-interference) leads to a reduction of the signal to noise ratio of the images, but can be minimised by appropriate measures. The observed slight field distorsions do not affect the image quality during real time acquisition in a substantial manner. No complications occurred. The extracted biopsy material was sufficient and of good quality. CONCLUSIONS In spite of slightly restricted image quality, the described drilling machine combined with the bone biopsy set is well suited for MR-guided bone biopsies, which require the application of a motor driven drill. Its application within an interventional MR scanner is safe and its handling simple and manageable.
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Affiliation(s)
- D Fritzsch
- Klinik für Diagnostische Radiologie, Universität Leipzig.
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Schulz T, Schneider JP, Winkel A, Daum W, Trantakis C, Bootz F, Laufer M, Dietrich J, Schmidt F. [MR-track pointer. A reusable device for localization during interventions]. ROFO-FORTSCHR RONTG 1999; 171:244-8. [PMID: 10520336 DOI: 10.1055/s-1999-11088] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
PURPOSE Development of an helpful instrument for a better planning and orientation during MR guided interventions. MATERIAL AND METHODS We developed a reusable, sterilizable instrument that can be filled both with a solution of Gd-DTPA (1%) and with a sodium chloride solution (0.9%). The pointer has a diameter of 3 and 5 mm resp. and its length is 100-150 mm. The instrument can be combined with an interactive stereotactic tracking device. RESULTS The MR-Track-Pointer can be fixed to the two handpieces of the integrated interactive tracking system without problems. The pointer can be seen both on T1w and T2w sequences inside and outside of the tissue. This new instrument can be interactively used for reliable planning the biopsy trajectory, planning craniotomies and identifying structures which are only visible on MR images. CONCLUSIONS The MR-Track-Pointer is an ideal supplement for the integrated virtual tracking system. It permits a minimal invasive orientation and facilitates the exact localisation of suspect lesions in sensible regions during MR guided interventions, e.g. diagnostic biopsies and tumour resections.
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Affiliation(s)
- T Schulz
- Klinik und Poliklinik für Diagnostische Radiologie, Universität Leipzig.
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Jordan A, Bendix T, Nielsen H, Hansen FR, Høst D, Winkel A. Intensive training, physiotherapy, or manipulation for patients with chronic neck pain. A prospective, single-blinded, randomized clinical trial. Spine (Phila Pa 1976) 1998; 23:311-8; discussion 319. [PMID: 9507618 DOI: 10.1097/00007632-199802010-00005] [Citation(s) in RCA: 158] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
STUDY DESIGN A randomized, prospective clinical study was conducted that included 119 patients with chronic neck pain of greater than 3 months' duration. OBJECTIVES To compare the relative effectiveness of intensive training of the cervical musculature, a physiotherapy treatment regimen, and chiropractic treatment on this patient group. SUMMARY OF BACKGROUND DATA There are only a few studies involving chronic neck pain patients representative of those seeking care in primary health care centers. Mobilization techniques and intensive training have been shown to be useful, but cervical manipulation has not been assessed. Clinical results involving these commonly used therapies have not been compared. METHODS A total of 167 consecutive patients were screened. One hundred nineteen patients were admitted to the study and were randomized according to Taves' minimization principles. Primary outcome measures included self-reported pain, disability, medication use, patients' perceived effect, and physician's global assessment. Patients were assessed at enrollment and at completion of the study. Postal questionnaires were used to carry out 4- and 12-month follow-up assessments. Secondary outcome measures included active range of motion of the cervical spine as well as strength and endurance measurements of the cervical musculature. These measurements were carried out at enrollment and completion of the study. RESULTS A total of 88% of the patients completed the study. Of these, 97% completed the 4-month questionnaire and 93% the 12-month questionnaire. Patients from all three groups demonstrated significant improvements regarding self-reported pain and disability on completion of the study. Improvements were maintained throughout the follow-up period. Medication use was also significantly reduced in all groups. There was, however, no significant difference between groups at any assessment period. Physician's and patients' assessments were also positive, and again group scores were essentially equal. Patients who underwent intensive training demonstrated significantly greater endurance levels at the completion of treatment. CONCLUSIONS There was no clinical difference between the three treatments. All three treatment interventions demonstrated meaningful improvement in all primary effect parameters. Improvements were maintained at 4- and 12-month follow-up. However, whether this was a result of the treatments or simply a result of time is unknown. Future studies will be necessary to delineate ideal treatment strategies.
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Affiliation(s)
- A Jordan
- Medical Orthopedic Department, RHIMA Center, Copenhagen, Denmark
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Siedler P, Winkel A. Fachausschuß für Staubtechnik des VDI und VDCh. Arbeitstagung am 22. Oktober 1943 in Frankfurt a. M. Angew Chem Int Ed Engl 1944. [DOI: 10.1002/ange.19440571716] [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: 11/06/2022]
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41
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D'Ans J, Wagenmann K, Berg R, Andreß KR, Rienäcker G, Heyrovskv J, Mann G, Wüst K, Hesse G, Haitinger M, Winkel A, Siebert H, Benedetti-Pichler AA, Lieb H, Löwe F, Meidinger W, Ingenieure VD, Matz W, Wicke E, Mayer H. Literatur. Anal Bioanal Chem 1939. [DOI: 10.1007/bf01547109] [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: 11/28/2022]
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42
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Winkel A, Siebert H. Kaiser Wilhelm-Institut für physikalische Chemie und Elektrochemie, Dahlem. Angew Chem Int Ed Engl 1938. [DOI: 10.1002/ange.19380510207] [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: 11/10/2022]
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43
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Winkel A. Physikalische Gesellschaft zu Berlin und Deutsche Gesellschaft für Technische Physik. Angew Chem Int Ed Engl 1938. [DOI: 10.1002/ange.19380510205] [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: 11/07/2022]
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44
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Hohn H, M�ller OH, Rylich A, Kom�rek K, Jahoda FG, Tokuoka M, Winkel A, Proske G, Roncato A, Bassani B. Polarographie. Anal Bioanal Chem 1937. [DOI: 10.1007/bf01470691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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45
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Greene CH, Churchill HV, Bridges RW, Miller AL, Traves F, Daubner W, Winkel A, Maas H. Nachweis und Bestimmung der Alkalien. Anal Bioanal Chem 1937. [DOI: 10.1007/bf01470695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Winkel A, Proske G, Shikata M, Semerano G, Jahoda FG, Pech J, Podrouzek W, Herasymenko P, Šlendyk I, Sládek J, Lipschütz M, Brdička R, Hamamoto E, Suchy K, Schwaer L, Tokuoka M, Ruzička J, Ilcovič D, Kemula W, Wenigerôwna B, Majer V. Polarographie. Anal Bioanal Chem 1936. [DOI: 10.1007/bf01382967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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