1
|
McFarland FL, Collier R, Walter N, Martinell B, Kaeppler SM, Kaeppler HF. A key to totipotency: Wuschel-like homeobox 2a unlocks embryogenic culture response in maize (Zea mays L.). Plant Biotechnol J 2023; 21:1860-1872. [PMID: 37357571 PMCID: PMC10440991 DOI: 10.1111/pbi.14098] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 06/19/2023] [Accepted: 05/28/2023] [Indexed: 06/27/2023]
Abstract
The ability of plant somatic cells to dedifferentiate, form somatic embryos and regenerate whole plants in vitro has been harnessed for both clonal propagation and as a key component of plant genetic engineering systems. Embryogenic culture response is significantly limited, however, by plant genotype in most species. This impedes advancements in both plant transformation-based functional genomics research and crop improvement efforts. We utilized natural variation among maize inbred lines to genetically map somatic embryo generation potential in tissue culture and identify candidate genes underlying totipotency. Using a series of maize lines derived from crosses involving the culturable parent A188 and the non-responsive parent B73, we identified a region on chromosome 3 associated with embryogenic culture response and focused on three candidate genes within the region based on genetic position and expression pattern. Two candidate genes showed no effect when ectopically expressed in B73, but the gene Wox2a was found to induce somatic embryogenesis and embryogenic callus proliferation. Transgenic B73 cells with strong constitutive expression of the B73 and A188 coding sequences of Wox2a were found to produce somatic embryos at similar frequencies, demonstrating that sufficient expression of either allele could rescue the embryogenic culture phenotype. Transgenic B73 plants were regenerated from the somatic embryos without chemical selection and no pleiotropic effects were observed in the Wox2a overexpression lines in the regenerated T0 plants or in the two independent events which produced T1 progeny. In addition to linking natural variation in tissue culture response to Wox2a, our data support the utility of Wox2a in enabling transformation of recalcitrant genotypes.
Collapse
Affiliation(s)
- Frank L. McFarland
- Department of AgronomyUniversity of WisconsinMadisonWIUSA
- Wisconsin Crop Innovation CenterUniversity of WisconsinMiddletonWIUSA
| | - Ray Collier
- Department of AgronomyUniversity of WisconsinMadisonWIUSA
| | | | | | - Shawn M. Kaeppler
- Department of AgronomyUniversity of WisconsinMadisonWIUSA
- Wisconsin Crop Innovation CenterUniversity of WisconsinMiddletonWIUSA
| | - Heidi F. Kaeppler
- Department of AgronomyUniversity of WisconsinMadisonWIUSA
- Wisconsin Crop Innovation CenterUniversity of WisconsinMiddletonWIUSA
| |
Collapse
|
2
|
Garcia K, Cloghessy K, Cooney DR, Shelley B, Chakraborty S, Kafle A, Busidan A, Sonawala U, Collier R, Jayaraman D, Ané JM, Pilot G. The putative transporter MtUMAMIT14 participates in nodule formation in Medicago truncatula. Sci Rep 2023; 13:804. [PMID: 36646812 PMCID: PMC9842706 DOI: 10.1038/s41598-023-28160-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Accepted: 01/13/2023] [Indexed: 01/17/2023] Open
Abstract
Transport systems are crucial in many plant processes, including plant-microbe interactions. Nodule formation and function in legumes involve the expression and regulation of multiple transport proteins, and many are still uncharacterized, particularly for nitrogen transport. Amino acids originating from the nitrogen-fixing process are an essential form of nitrogen for legumes. This work evaluates the role of MtN21 (henceforth MtUMAMIT14), a putative transport system from the MtN21/EamA-like/UMAMIT family, in nodule formation and nitrogen fixation in Medicago truncatula. To dissect this transporter's role, we assessed the expression of MtUMAMIT14 using GUS staining, localized the corresponding protein in M. truncatula root and tobacco leaf cells, and investigated two independent MtUMAMIT14 mutant lines. Our results indicate that MtUMAMIT14 is localized in endosomal structures and is expressed in both the infection zone and interzone of nodules. Comparison of mutant and wild-type M. truncatula indicates MtUMAMIT14, the expression of which is dependent on the presence of NIN, DNF1, and DNF2, plays a role in nodule formation and nitrogen-fixation. While the function of the transporter is still unclear, our results connect root nodule nitrogen fixation in legumes with the UMAMIT family.
Collapse
Affiliation(s)
- Kevin Garcia
- Department of Crop and Soil Sciences, North Carolina State University, Raleigh, NC, 27695-7619, USA.
| | - Kaylee Cloghessy
- Department of Bacteriology, University of Wisconsin-Madison, Madison, WI, 53706, USA.,Department of Biological Sciences, The University of Notre Dame, Notre Dame, IN, 46556, USA
| | - Danielle R Cooney
- Department of Crop and Soil Sciences, North Carolina State University, Raleigh, NC, 27695-7619, USA
| | - Brett Shelley
- School of Plant and Environmental Sciences, Virginia Tech, Blacksburg, VA, 24060, USA
| | - Sanhita Chakraborty
- Department of Bacteriology, University of Wisconsin-Madison, Madison, WI, 53706, USA
| | - Arjun Kafle
- Department of Crop and Soil Sciences, North Carolina State University, Raleigh, NC, 27695-7619, USA
| | - Aymeric Busidan
- School of Plant and Environmental Sciences, Virginia Tech, Blacksburg, VA, 24060, USA
| | - Unnati Sonawala
- School of Plant and Environmental Sciences, Virginia Tech, Blacksburg, VA, 24060, USA
| | - Ray Collier
- Department of Bacteriology, University of Wisconsin-Madison, Madison, WI, 53706, USA.,Molecular Technologies Department, Wisconsin Crop Innovation Center, University of Wisconsin-Madison, Madison, WI, 53562, USA
| | | | - Jean-Michel Ané
- Department of Bacteriology, University of Wisconsin-Madison, Madison, WI, 53706, USA.,Department of Agronomy, University of Wisconsin-Madison, Madison, WI, 53706, USA
| | - Guillaume Pilot
- School of Plant and Environmental Sciences, Virginia Tech, Blacksburg, VA, 24060, USA
| |
Collapse
|
3
|
Coate E, Merchen T, Cybulski R, Collier R, Mc Gann P, Mills E. Novel discovery of Extended Spectrum β-lactamase (ESBL) Pluralibacter gergoviae in acute urinary tract infection and urolithiasis. Am J Clin Pathol 2021. [DOI: 10.1093/ajcp/aqab191.273] [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: 11/12/2022] Open
Abstract
Abstract
Introduction/Objective
This case study describes the diagnosis, treatment, whole genome sequencing (WGS) and antibiotic resistance characterization from the ESBL-producing Pluralibacter gergoviae, a multi-drug resistant organism (MDRO) with a previously-documented presence in foodstuffs and cosmetics.
Methods/Case Report
A 39-year-old Hispanic American woman was admitted to the emergency department (ED) for fever, suprapubic tenderness, and pyuria. Three days prior to admission, patient underwent elective bilateral lithotripsy for retained nephrolithiasis. Seven days prior to ED admission, patient had an “Orgasm Shot” (O-Shot) which consists of platelet rich plasma that is drawn from the patient and injected into her vulvar area and around her clitoris to increase stimulation potential during orgasm. The patient was started on broad spectrum antibiotics, receiving Vancomycin and Ceftriaxone 1 gram 1 gram IV every 12 hours, intravenously. Urine cultures yielded two organisms, including a lactose fermenting as well as a non-lactose fermenting Gram negative rod. Mass spectrometry-based identification was successful in identifying the non-lactose fermenting colony as Pseudomonas aeruginosa, which also identified from a blood culture collected from the patient upon presentation to the ED. The lactose fermenting colony resulted in no identification by mass spectrometry but was identified using biochemical methods as Pluralibacter gergoviae, a recently-reclassified taxonomy previously identified as Enterobacter gergoviae. The P. gergoviae isolate was submitted to the Multidrug-Resistant Organism Repository (MRSN) at Walter Reed Army Institute of Research (WARIR) for WGS on Illumina Miseq. Sequencing and phenotypic/ genotypic data on isolate confirmed this as an ESBL P. gergoviae organism.
Results (if a Case Study enter NA)
NA
Conclusion
Summary data on possible epidemiological associations, antibiotic susceptibility testing, antibiotic resistance genes identified, and information on the antibiotic resistance plasmids will be presented. These findings from the WGS data, antibiotic susceptibilities will provide a lessons-learned for other clinical microbiology labs on how to identify unusual organisms such as P. gergoviae.
Collapse
Affiliation(s)
- E Coate
- Microbiology, Pathology and Laboratory Services, Brooke Army Medical Center, Joint Base San Antonio, Ft. Sam Houston, Texas, UNITED STATES
| | - T Merchen
- Microbiology, Pathology and Laboratory Services, Brooke Army Medical Center, Joint Base San Antonio, Ft. Sam Houston, Texas, UNITED STATES
| | - R Cybulski
- Microbiology, Pathology and Laboratory Services, Brooke Army Medical Center, Joint Base San Antonio, Ft. Sam Houston, Texas, UNITED STATES
| | - R Collier
- Infectious Disease Service, Brooke Army Medical Center, Joint Base San Antonio, Ft. Sam Houston, Texas, UNITED STATES
| | - P Mc Gann
- Molecular Research, Multidrug Resistant Organism Repository and Surveillance Network (MRSN), Walter Reed Army Institute of Research, Silver Spring, Maryland, UNITED STATES
| | - E Mills
- Molecular Research, Multidrug Resistant Organism Repository and Surveillance Network (MRSN), Walter Reed Army Institute of Research, Silver Spring, Maryland, UNITED STATES
| |
Collapse
|
4
|
Thu SW, Lu MZ, Carter AM, Collier R, Gandin A, Sitton CC, Tegeder M. Role of ureides in source-to-sink transport of photoassimilates in non-fixing soybean. J Exp Bot 2020; 71:4495-4511. [PMID: 32188989 PMCID: PMC7475099 DOI: 10.1093/jxb/eraa146] [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] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Accepted: 03/16/2020] [Indexed: 05/03/2023]
Abstract
Nitrogen (N)-fixing soybean plants use the ureides allantoin and allantoic acid as major long-distance transport forms of N, but in non-fixing, non-nodulated plants amino acids mainly serve in source-to-sink N allocation. However, some ureides are still synthesized in roots of non-fixing soybean, and our study addresses the role of ureide transport processes in those plants. In previous work, legume ureide permeases (UPSs) were identified that are involved in cellular import of allantoin and allantoic acid. Here, UPS1 from common bean was expressed in the soybean phloem, which resulted in enhanced source-to-sink transport of ureides in the transgenic plants. This was accompanied by increased ureide synthesis and elevated allantoin and allantoic acid root-to-sink transport. Interestingly, amino acid assimilation, xylem transport, and phloem partitioning to sinks were also strongly up-regulated. In addition, photosynthesis and sucrose phloem transport were improved in the transgenic plants. These combined changes in source physiology and assimilate partitioning resulted in increased vegetative growth and improved seed numbers. Overall, the results support that ureide transport processes in non-fixing plants affect source N and carbon acquisition and assimilation as well as source-to-sink translocation of N and carbon assimilates with consequences for plant growth and seed development.
Collapse
Affiliation(s)
- Sandi Win Thu
- School of Biological Sciences, Washington State University, Pullman, WA, USA
| | - Ming-Zhu Lu
- School of Biological Sciences, Washington State University, Pullman, WA, USA
| | - Amanda M Carter
- School of Biological Sciences, Washington State University, Pullman, WA, USA
| | - Ray Collier
- School of Biological Sciences, Washington State University, Pullman, WA, USA
| | - Anthony Gandin
- School of Biological Sciences, Washington State University, Pullman, WA, USA
| | - Ciera Chenoa Sitton
- School of Biological Sciences, Washington State University, Pullman, WA, USA
| | - Mechthild Tegeder
- School of Biological Sciences, Washington State University, Pullman, WA, USA
| |
Collapse
|
5
|
Collier R, Thomson JG, Thilmony R. A versatile and robust Agrobacterium-based gene stacking system generates high-quality transgenic Arabidopsis plants. Plant J 2018; 95:573-583. [PMID: 29901840 DOI: 10.1111/tpj.13992] [Citation(s) in RCA: 21] [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] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Revised: 05/15/2018] [Accepted: 05/18/2018] [Indexed: 05/20/2023]
Abstract
Biotechnology provides a means for the rapid genetic improvement of plants. Although single genes have been important in engineering herbicide and pest tolerance traits in crops, future improvements of complex traits like yield and nutritional quality will likely require the introduction of multiple genes. This research reports a system (GAANTRY; Gene Assembly in Agrobacterium by Nucleic acid Transfer using Recombinase technologY) for the flexible, in vivo stacking of multiple genes within an Agrobacterium virulence plasmid Transfer-DNA (T-DNA). The GAANTRY system utilizes in vivo transient expression of unidirectional site-specific recombinases and an alternating selection scheme to sequentially assemble multiple genes into a single transformation construct. To demonstrate GAANTRY's capabilities, 10 cargo sequences were sequentially stacked together to produce a 28.5-kbp T-DNA, which was used to generate hundreds of transgenic events. Approximately 90% of the events identified using a dual antibiotic selection screen exhibited all of the introduced traits. A total of 68% of the tested lines carried a single copy of the selection marker transgene located near the T-DNA left border, and only 8% contained sequence from outside the T-DNA. The GAANTRY system can be modified to easily accommodate any method of DNA assembly and generate high-quality transgenic plants, making it a powerful, yet simple to use tool for plant genetic engineering.
Collapse
Affiliation(s)
- Ray Collier
- United States Department of Agriculture-Agriculture Research Service, Western Regional Research Center, Crop Improvement and Genetics Research Unit, Albany, CA, 94710, USA
| | - James G Thomson
- United States Department of Agriculture-Agriculture Research Service, Western Regional Research Center, Crop Improvement and Genetics Research Unit, Albany, CA, 94710, USA
| | - Roger Thilmony
- United States Department of Agriculture-Agriculture Research Service, Western Regional Research Center, Crop Improvement and Genetics Research Unit, Albany, CA, 94710, USA
| |
Collapse
|
6
|
Collier R, Dasgupta K, Xing YP, Hernandez BT, Shao M, Rohozinski D, Kovak E, Lin J, de Oliveira MLP, Stover E, McCue KF, Harmon FG, Blechl A, Thomson JG, Thilmony R. Accurate measurement of transgene copy number in crop plants using droplet digital PCR. Plant J 2017; 90:1014-1025. [PMID: 28231382 DOI: 10.1111/tpj.13517] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [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: 11/09/2016] [Revised: 02/14/2017] [Accepted: 02/15/2017] [Indexed: 05/22/2023]
Abstract
Genetic transformation is a powerful means for the improvement of crop plants, but requires labor- and resource-intensive methods. An efficient method for identifying single-copy transgene insertion events from a population of independent transgenic lines is desirable. Currently, transgene copy number is estimated by either Southern blot hybridization analyses or quantitative polymerase chain reaction (qPCR) experiments. Southern hybridization is a convincing and reliable method, but it also is expensive, time-consuming and often requires a large amount of genomic DNA and radioactively labeled probes. Alternatively, qPCR requires less DNA and is potentially simpler to perform, but its results can lack the accuracy and precision needed to confidently distinguish between one- and two-copy events in transgenic plants with large genomes. To address this need, we developed a droplet digital PCR-based method for transgene copy number measurement in an array of crops: rice, citrus, potato, maize, tomato and wheat. The method utilizes specific primers to amplify target transgenes, and endogenous reference genes in a single duplexed reaction containing thousands of droplets. Endpoint amplicon production in the droplets is detected and quantified using sequence-specific fluorescently labeled probes. The results demonstrate that this approach can generate confident copy number measurements in independent transgenic lines in these crop species. This method and the compendium of probes and primers will be a useful resource for the plant research community, enabling the simple and accurate determination of transgene copy number in these six important crop species.
Collapse
Affiliation(s)
- Ray Collier
- Western Regional Research Center, Crop Improvement and Genetics Research Unit, USDA-ARS, 800 Buchanan Street, Albany, CA, 94710, USA
| | - Kasturi Dasgupta
- Department of Plant Sciences, University of California, One Shields Avenue, Davis, CA, 95616, USA
| | - Yan-Ping Xing
- Western Regional Research Center, Crop Improvement and Genetics Research Unit, USDA-ARS, 800 Buchanan Street, Albany, CA, 94710, USA
| | - Bryan Tarape Hernandez
- Department of Plant Sciences, University of California, One Shields Avenue, Davis, CA, 95616, USA
| | - Min Shao
- Department of Plant Sciences, University of California, One Shields Avenue, Davis, CA, 95616, USA
| | - Dominica Rohozinski
- Plant Gene Expression Center, USDA-ARS, 800 Buchanan Street, Albany, CA, 94710, USA
| | - Emma Kovak
- Plant Gene Expression Center, USDA-ARS, 800 Buchanan Street, Albany, CA, 94710, USA
- Department of Plant & Microbial Biology, University of California, Berkeley, CA, 94720, USA
| | - Jeanie Lin
- Western Regional Research Center, Crop Improvement and Genetics Research Unit, USDA-ARS, 800 Buchanan Street, Albany, CA, 94710, USA
| | | | - Ed Stover
- USDA-ARS Subtropical Insects and Horticulture Research Unit, Fort Pierce, FL, 34945, USA
| | - Kent F McCue
- Western Regional Research Center, Crop Improvement and Genetics Research Unit, USDA-ARS, 800 Buchanan Street, Albany, CA, 94710, USA
| | - Frank G Harmon
- Plant Gene Expression Center, USDA-ARS, 800 Buchanan Street, Albany, CA, 94710, USA
- Department of Plant & Microbial Biology, University of California, Berkeley, CA, 94720, USA
| | - Ann Blechl
- Western Regional Research Center, Crop Improvement and Genetics Research Unit, USDA-ARS, 800 Buchanan Street, Albany, CA, 94710, USA
| | - James G Thomson
- Western Regional Research Center, Crop Improvement and Genetics Research Unit, USDA-ARS, 800 Buchanan Street, Albany, CA, 94710, USA
| | - Roger Thilmony
- Western Regional Research Center, Crop Improvement and Genetics Research Unit, USDA-ARS, 800 Buchanan Street, Albany, CA, 94710, USA
| |
Collapse
|
7
|
Bachelet F, Vincent-Viry O, Collier R, Fleury E, Jeannot L, Legaie O, Pascal G, Perin JP, Viargues F. The Cryogenic Studying and Filling Facilities for the Laser Mégajoule Targets. Fusion Science and Technology 2017. [DOI: 10.13182/fst09-a6945] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- F. Bachelet
- CEA, DAM, VALDUC, F-21120 Is sur Tille, France
| | | | - R. Collier
- CEA, DAM, VALDUC, F-21120 Is sur Tille, France
| | - E. Fleury
- CEA, DAM, VALDUC, F-21120 Is sur Tille, France
| | - L. Jeannot
- CEA, DAM, VALDUC, F-21120 Is sur Tille, France
| | - O. Legaie
- CEA, DAM, VALDUC, F-21120 Is sur Tille, France
| | - G. Pascal
- CEA, DAM, VALDUC, F-21120 Is sur Tille, France
| | - J. P. Perin
- CEA, GRENOBLE, DSM/INAC/SBT, F-38054 Grenoble, France
| | - F. Viargues
- CEA, GRENOBLE, DSM/INAC/SBT, F-38054 Grenoble, France
| |
Collapse
|
8
|
Fleury E, Bachelet F, Collier R, Legaie O, Pascal G, Vincent-Viry O, Dupont JL, Perin JP, Viargues F. Tritium Facilities for the LMJ Cryogenic Targets. Fusion Science and Technology 2017. [DOI: 10.13182/fst08-a1832] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- E. Fleury
- Commissariat à l’Energie Atomique de Valduc, Département de Recherche sur les Matériaux Nucléaires, Service Microcibles
| | - F. Bachelet
- Commissariat à l’Energie Atomique de Valduc, Département de Recherche sur les Matériaux Nucléaires, Service Microcibles
| | - R. Collier
- Commissariat à l’Energie Atomique de Valduc, Département de Recherche sur les Matériaux Nucléaires, Service Microcibles
| | - O. Legaie
- Commissariat à l’Energie Atomique de Valduc, Département de Recherche sur les Matériaux Nucléaires, Service Microcibles
| | - G. Pascal
- Commissariat à l’Energie Atomique de Valduc, Département de Recherche sur les Matériaux Nucléaires, Service Microcibles
| | - O. Vincent-Viry
- Commissariat à l’Energie Atomique de Valduc, Département de Recherche sur les Matériaux Nucléaires, Service Microcibles
| | - JL. Dupont
- Commissariat à l’Energie Atomique de Valduc, Département de Traitement des Matériaux Nucléaires, Service Hydrogène, Deutérium, Tritium, 21120 Is-sur-Tille, France
| | - JP. Perin
- Centre d’Etude Nucléaire de Grenoble, Département de Recherche sur la Fusion de la Matière, Service des Basses Température, 38054 Grenoble, France e-mail :
| | - F. Viargues
- Centre d’Etude Nucléaire de Grenoble, Département de Recherche sur la Fusion de la Matière, Service des Basses Température, 38054 Grenoble, France e-mail :
| |
Collapse
|
9
|
Collier R, Fleury E, Vincent-Viry O, Viargues F, Baclet P. Overview of the Filling Station for LMJ Cryogenic Targets. Fusion Science and Technology 2017. [DOI: 10.13182/fst07-a1474] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- R. Collier
- CEA, Commissariat à l’Energie Atomique, Département de Recherche sur les Matériaux Nucléaires, Service Microcibles 21120 Is sur Tille, France
| | - E. Fleury
- CEA, Commissariat à l’Energie Atomique, Département de Recherche sur les Matériaux Nucléaires, Service Microcibles 21120 Is sur Tille, France
| | - O. Vincent-Viry
- CEA, Commissariat à l’Energie Atomique, Département de Recherche sur les Matériaux Nucléaires, Service Microcibles 21120 Is sur Tille, France
| | - F. Viargues
- Département de Recherche Fondamentale sur la Matière Condensée, Service des Basses Températures
| | - P. Baclet
- CEA, Commissariat à l’Energie Atomique, Département de Recherche sur les Matériaux Nucléaires, Service Microcibles 21120 Is sur Tille, France
| |
Collapse
|
10
|
Baclet P, Bednarczyk S, Botrel R, Bourcier H, Breton O, Collier R, Fleury E, Legaie O, Schunk J, Perin JP, Reneaume B, Theobald M. The LMJ Cryogenic Target Assembly: Functions and Fabrication. Fusion Science and Technology 2017. [DOI: 10.13182/fst04-a461] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Ph. Baclet
- CEA VALDUC - Laser Target Department
- CEA, Commissariat á l’Energie Atomique, Valduc Département de Recherches sur les Matériaux Nucléaires, Service Microcibles 21120 Is sur Tille, France. (33) 3.80.23.53.00
| | - S. Bednarczyk
- CEA VALDUC - Laser Target Department
- CEA, Commissariat á l’Energie Atomique, Valduc Département de Recherches sur les Matériaux Nucléaires, Service Microcibles 21120 Is sur Tille, France. (33) 3.80.23.53.00
| | - R. Botrel
- CEA VALDUC - Laser Target Department
- CEA, Commissariat á l’Energie Atomique, Valduc Département de Recherches sur les Matériaux Nucléaires, Service Microcibles 21120 Is sur Tille, France. (33) 3.80.23.53.00
| | - H. Bourcier
- CEA VALDUC - Laser Target Department
- CEA, Commissariat á l’Energie Atomique, Valduc Département de Recherches sur les Matériaux Nucléaires, Service Microcibles 21120 Is sur Tille, France. (33) 3.80.23.53.00
| | - O. Breton
- CEA VALDUC - Laser Target Department
- CEA, Commissariat á l’Energie Atomique, Valduc Département de Recherches sur les Matériaux Nucléaires, Service Microcibles 21120 Is sur Tille, France. (33) 3.80.23.53.00
| | - R. Collier
- CEA VALDUC - Laser Target Department
- CEA, Commissariat á l’Energie Atomique, Valduc Département de Recherches sur les Matériaux Nucléaires, Service Microcibles 21120 Is sur Tille, France. (33) 3.80.23.53.00
| | - E. Fleury
- CEA VALDUC - Laser Target Department
- CEA, Commissariat á l’Energie Atomique, Valduc Département de Recherches sur les Matériaux Nucléaires, Service Microcibles 21120 Is sur Tille, France. (33) 3.80.23.53.00
| | - O. Legaie
- CEA VALDUC - Laser Target Department
- CEA, Commissariat á l’Energie Atomique, Valduc Département de Recherches sur les Matériaux Nucléaires, Service Microcibles 21120 Is sur Tille, France. (33) 3.80.23.53.00
| | - J. Schunk
- CEA VALDUC - Laser Target Department
- CEA, Commissariat á l’Energie Atomique, Valduc Département de Recherches sur les Matériaux Nucléaires, Service Microcibles 21120 Is sur Tille, France. (33) 3.80.23.53.00
| | - J. P. Perin
- (*) CEA Grenoble - Very Low Temperature Department
- CEA, Commissariat á l’Energie Atomique, Valduc Département de Recherches sur les Matériaux Nucléaires, Service Microcibles 21120 Is sur Tille, France. (33) 3.80.23.53.00
| | - B. Reneaume
- CEA VALDUC - Laser Target Department
- CEA, Commissariat á l’Energie Atomique, Valduc Département de Recherches sur les Matériaux Nucléaires, Service Microcibles 21120 Is sur Tille, France. (33) 3.80.23.53.00
| | - M. Theobald
- CEA VALDUC - Laser Target Department
- CEA, Commissariat á l’Energie Atomique, Valduc Département de Recherches sur les Matériaux Nucléaires, Service Microcibles 21120 Is sur Tille, France. (33) 3.80.23.53.00
| |
Collapse
|
11
|
Collier R, Bragg J, Hernandez BT, Vogel JP, Thilmony R. Use of Agrobacterium rhizogenes Strain 18r12v and Paromomycin Selection for Transformation of Brachypodium distachyon and Brachypodium sylvaticum. Front Plant Sci 2016; 7:716. [PMID: 27252729 PMCID: PMC4877385 DOI: 10.3389/fpls.2016.00716] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Accepted: 05/09/2016] [Indexed: 05/29/2023]
Abstract
The genetic transformation of monocot grasses is a resource intensive process, the quality and efficiency of which is dependent in part upon the method of DNA introduction, as well as the ability to effectively separate transformed from wildtype tissue. Agrobacterium-mediated transformation of Brachypodium has relied mainly on Agrobacterium tumefaciens strain AGL1. Currently the antibiotic hygromycin B has been the selective agent of choice for robust identification of transgenic calli in Brachypodium distachyon and Brachypodium sylvaticum but few other chemicals have been shown to work as well for selection of transgenic Brachypodium cells in tissue culture. This study demonstrates that Agrobacterium rhizogenes strain 18r12v and paromomycin selection can be successfully used for the efficient generation of transgenic B. distachyon and B. sylvaticum. Additionally we observed that the transformation rates were similar to or higher than those obtained with A. tumefaciens strain AGL1 and hygromycin selection. The A. rhizogenes strain 18r12v harboring the pARS1 binary vector and paromomycin selection is an effective means of generating transgenic Brachypodium plants. This novel approach will facilitate the transgenic complementation of T-DNA knockout mutants of B. distachyon which were created using hygromycin selection, as well as aid the implementation of more complex genome manipulation strategies which require multiple rounds of transformation.
Collapse
Affiliation(s)
- Ray Collier
- Crop Improvement and Genetics Research Unit, Western Regional Research Center, United States Department of Agriculture-Agricultural Research Service, AlbanyCA, USA
| | - Jennifer Bragg
- Crop Improvement and Genetics Research Unit, Western Regional Research Center, United States Department of Agriculture-Agricultural Research Service, AlbanyCA, USA
| | - Bryan T. Hernandez
- Department of Plant Sciences, University of California, Davis, DavisCA, USA
| | - John P. Vogel
- Crop Improvement and Genetics Research Unit, Western Regional Research Center, United States Department of Agriculture-Agricultural Research Service, AlbanyCA, USA
- Department of Energy, Joint Genome Institute, Walnut CreekCA, USA
| | - Roger Thilmony
- Crop Improvement and Genetics Research Unit, Western Regional Research Center, United States Department of Agriculture-Agricultural Research Service, AlbanyCA, USA
| |
Collapse
|
12
|
Abstract
Legumes can access atmospheric nitrogen through a symbiotic relationship with nitrogen-fixing bacteroids that reside in root nodules. In soybean, the products of fixation are the ureides allantoin and allantoic acid, which are also the dominant long-distance transport forms of nitrogen from nodules to the shoot. Movement of nitrogen assimilates out of the nodules occurs via the nodule vasculature; however, the molecular mechanisms for ureide export and the importance of nitrogen transport processes for nodule physiology have not been resolved. Here, we demonstrate the function of two soybean proteins - GmUPS1-1 (XP_003516366) and GmUPS1-2 (XP_003518768) - in allantoin and allantoic acid transport out of the nodule. Localization studies revealed the presence of both transporters in the plasma membrane, and expression in nodule cortex cells and vascular endodermis. Functional analysis in soybean showed that repression of GmUPS1-1 and GmUPS1-2 in nodules leads to an accumulation of ureides and decreased nitrogen partitioning to roots and shoot. It was further demonstrated that nodule development, nitrogen fixation and nodule metabolism were negatively affected in RNAi UPS1 plants. Together, we conclude that export of ureides from nodules is mediated by UPS1 proteins, and that activity of the transporters is not only essential for shoot nitrogen supply but also for nodule development and function.
Collapse
Affiliation(s)
- Ray Collier
- School of Biological Sciences, Washington State University, Pullman, WA 99164-4236, USA
| | | |
Collapse
|
13
|
Collier R. Family medicine's obligation to society. CMAJ 2011; 183:E1297-8. [DOI: 10.1503/cmaj.109-4049] [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: 11/01/2022] Open
|
14
|
Vincent-Viry O, Bachelet F, Collier R, Fleury E, Legaie O, Jeannot L, Perin JP, Viargues F. Tritium Facilities for the LMJ Cryogenic Targets. Fusion Science and Technology 2011. [DOI: 10.13182/fst11-a12559] [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] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
| | - F. Bachelet
- CEA, DAM, VALDUC, F-21120 Is Sur Tille, France
| | - R. Collier
- CEA, DAM, VALDUC, F-21120 Is Sur Tille, France
| | - E. Fleury
- CEA, DAM, VALDUC, F-21120 Is Sur Tille, France
| | - O. Legaie
- CEA, DAM, VALDUC, F-21120 Is Sur Tille, France
| | - L. Jeannot
- CEA, DAM, VALDUC, F-21120 Is Sur Tille, France
| | | | | |
Collapse
|
15
|
Bachelet F, Bourgeois E, Collier R, Fleury E, Legaie O, Reneaume B, Theobald M. Tritium Ageing Studies for “LMJ Target” Applications: Poliymide and CHx Membranes Permeation Results. Fusion Science and Technology 2011. [DOI: 10.13182/fst11-a12560] [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] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
| | | | - R. Collier
- CEA, VALDUC, F-21120 Is Sur Tille, France
| | - E. Fleury
- CEA, VALDUC, F-21120 Is Sur Tille, France
| | - O. Legaie
- CEA, VALDUC, F-21120 Is Sur Tille, France
| | | | | |
Collapse
|
16
|
Collier R. Mediocrity has become the norm, Turnbull asserts in valedictory address. CMAJ 2011; 183:E995-6. [DOI: 10.1503/cmaj.109-3982] [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: 11/01/2022] Open
|
17
|
|
18
|
Collier R. Pack pooches in the cargo hold, CMA says. CMAJ 2011; 183:E999-1000. [DOI: 10.1503/cmaj.109-3983] [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: 11/01/2022] Open
|
19
|
Collier R. CMA president-elect traverses wildernesses. CMAJ 2011; 183:E997-8. [DOI: 10.1503/cmaj.109-3981] [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: 11/01/2022] Open
|
20
|
Collier R. Health care system needs new revenue streams, expert argues. CMAJ 2011; 183:E989-90. [DOI: 10.1503/cmaj.109-3975] [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: 11/01/2022] Open
|
21
|
Collier R. Bid to expand horizon of medical students fails. CMAJ 2011; 183:E1003-4. [DOI: 10.1503/cmaj.109-3986] [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: 11/01/2022] Open
|
22
|
Collier R. Penalizing hospitals for bad care. CMAJ 2011; 183:E785-6. [DOI: 10.1503/cmaj.109-3916] [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: 11/01/2022] Open
|
23
|
Collier R. United Nations releases draft strategy for noncommunicable diseases. CMAJ 2011; 183:E779-80. [DOI: 10.1503/cmaj.109-3951] [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: 11/01/2022] Open
|
24
|
Collier R. Canadian students develop mediwiki to share classroom notes with the world. CMAJ 2011; 183:E717. [DOI: 10.1503/cmaj.109-3842] [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: 11/01/2022] Open
|
25
|
Collier R. Software tool determines odds of breaching patient privacy. CMAJ 2011; 183:E699-700. [DOI: 10.1503/cmaj.109-3843] [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: 11/01/2022] Open
|
26
|
Collier R. PHAC to publicly disclose conflicts of interest of external advisors serving on advisory committees. CMAJ 2011; 183:E707-8. [DOI: 10.1503/cmaj.109-3923] [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: 11/01/2022] Open
|
27
|
Collier R. Self-injury rates indicate Canadian mental health services are inadequate. CMAJ 2011; 183:E615-6. [DOI: 10.1503/cmaj.109-3920] [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: 11/01/2022] Open
|
28
|
Collier R. Steps forward no guarantee that health targets will be met, council says. CMAJ 2011; 183:E619-20. [DOI: 10.1503/cmaj.109-3912] [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: 11/01/2022] Open
|
29
|
|
30
|
|
31
|
Collier R. Federal parties target home care. CMAJ 2011; 183:E451-2. [DOI: 10.1503/cmaj.109-3856] [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: 11/01/2022] Open
|
32
|
Collier R. Unproven Olympic health legacies. CMAJ 2011; 183:E381-2. [DOI: 10.1503/cmaj.109-3833] [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: 11/01/2022] Open
|
33
|
Collier R. Grief therapy for those left behind. CMAJ 2011; 183:E265-6. [DOI: 10.1503/cmaj.109-3793] [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: 11/01/2022] Open
|
34
|
Collier R. Dens of inactivity. CMAJ 2011; 183:E225-6. [DOI: 10.1503/cmaj.109-3808] [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: 11/01/2022] Open
|
35
|
Collier R. Orthotics work in mysterious ways. CMAJ 2011; 183:416-7. [DOI: 10.1503/cmaj.109-3802] [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: 11/01/2022] Open
|
36
|
Collier R. Pocket-sized help for people with dementia. CMAJ 2011; 183:E138. [DOI: 10.1503/cmaj.109-3705] [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: 11/01/2022] Open
|
37
|
Collier R. The centralized approach to guidelines development. CMAJ 2011; 183:299-300. [DOI: 10.1503/cmaj.109-3784] [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: 11/01/2022] Open
|
38
|
Collier R. National home care standards urged. CMAJ 2011; 183:176-7. [DOI: 10.1503/cmaj.109-3731] [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: 11/01/2022] Open
|
39
|
Collier R. Preparing for the inevitable. CMAJ 2011; 183:30-1. [DOI: 10.1503/cmaj.109-3704] [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: 11/01/2022] Open
|
40
|
Reneaume B, Allegre G, Botrel R, Bourcier H, Bourdenet R, Breton O, Collier R, Dauteuil C, Durut F, Faivre A, Fleury E, Geoffray I, Geoffray G, Jeannot L, Jehanno L, Legaie O, Legay G, Meux S, Paquignon G, Perin JP, Schunk J, Theobald M, Vasselin C, Viargues F. Overview on Materials and Technological Developments for the LMJ Cryogenic Target Assembly. Fusion Science and Technology 2011. [DOI: 10.13182/fst11-a11517] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
| | - G. Allegre
- CEA-Valduc, F-21120 Is sur Tille, France
| | - R. Botrel
- CEA-Valduc, F-21120 Is sur Tille, France
| | | | | | - O. Breton
- CEA-Valduc, F-21120 Is sur Tille, France
| | - R. Collier
- CEA-Valduc, F-21120 Is sur Tille, France
| | | | - F. Durut
- CEA-Valduc, F-21120 Is sur Tille, France
| | - A. Faivre
- CEA-Valduc, F-21120 Is sur Tille, France
| | - E. Fleury
- CEA-Valduc, F-21120 Is sur Tille, France
| | | | | | - L. Jeannot
- CEA-Valduc, F-21120 Is sur Tille, France
| | - L. Jehanno
- CEA-Valduc, F-21120 Is sur Tille, France
| | - O. Legaie
- CEA-Valduc, F-21120 Is sur Tille, France
| | - G. Legay
- CEA-Valduc, F-21120 Is sur Tille, France
| | - S. Meux
- CEA-Valduc, F-21120 Is sur Tille, France
| | | | | | - J. Schunk
- CEA-Valduc, F-21120 Is sur Tille, France
| | | | | | | |
Collapse
|
41
|
Collier R. Critics say UNICEF-Cadbury partnership is mere sugarwashing. CMAJ 2010; 182:E813-4. [DOI: 10.1503/cmaj.109-3720] [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: 11/01/2022] Open
|
42
|
Collier R. Irreconcilable choices in military medicine. CMAJ 2010; 182:E821-2. [DOI: 10.1503/cmaj.109-3723] [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: 11/01/2022] Open
|
43
|
Dhaliwal AK, Sewell L, Collier R, Singh SJ. S75 Is a practice incremental shuttle walk test always necessary and is it influenced by MRC dyspnoea grade? Thorax 2010. [DOI: 10.1136/thx.2010.150938.26] [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: 11/03/2022]
|
44
|
Collier R. Britain's libel fighter. CMAJ 2010; 182:E733-4. [DOI: 10.1503/cmaj.109-3673] [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: 11/01/2022] Open
|
45
|
Collier R. Medical credit cards come under scrutiny. CMAJ 2010; 182:E741-2. [DOI: 10.1503/cmaj.109-3688] [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: 11/01/2022] Open
|
46
|
Collier R. Alberta doctors vote on province-wide medical staff bylaws. CMAJ 2010; 182:E709-10. [DOI: 10.1503/cmaj.109-3671] [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: 11/01/2022] Open
|
47
|
Collier R. New name proposed for popular sweetener. CMAJ 2010; 182:E713-4. [DOI: 10.1503/cmaj.109-3681] [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: 11/01/2022] Open
|
48
|
|
49
|
Collier R. Former senior editor at The Lancet cries foul over firing for "gross misconduct". CMAJ 2010; 182:E503-4. [DOI: 10.1503/cmaj.109-3296] [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: 11/01/2022] Open
|
50
|
Evans RA, Singh SJ, Collier R, Loke I, Steiner MC, Morgan MDL. Generic, symptom based, exercise rehabilitation; integrating patients with COPD and heart failure. Respir Med 2010; 104:1473-81. [PMID: 20650624 DOI: 10.1016/j.rmed.2010.04.024] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2010] [Revised: 04/23/2010] [Accepted: 04/26/2010] [Indexed: 02/08/2023]
Abstract
BACKGROUND Patients with Chronic Heart Failure (CHF) develop similar symptoms of exertional breathlessness and fatigue as patients with COPD. Although pulmonary (exercise based) rehabilitation (PR) is an integral part of the management of COPD, the potential for exercise rehabilitation (ER) to assist patients with CHF may not be as readily appreciated. We investigated whether combined ER for patients with CHF and COPD was feasible and effective using the model of PR. METHODS 57 patients with CHF were randomized 2:1 to 7 weeks ER (CHF-ER) or 7 weeks of usual care (CHF-UC). As a comparator 55 patients with COPD were simultaneously recruited to the same ER program (COPD-ER). The primary outcome measure was the Incremental Shuttle Walk Test (ISWT) and the secondary outcome measures were the Endurance Shuttle Walk Test (ESWT), isometric quadriceps strength and health status. RESULTS 27 CHF and 44 COPD patients completed ER and 17 patients with CHF completed UC. The CHF-ER group made significant improvements, compared to CHF-UC, in the mean (95%CI) ISWT distance; 62(35-89)m vs -6(-11 to 33)m p < 0.001. The CHF-ER group also made statistically significant improvements in health status. The improvements in exercise performance and health status were similar between patients with CHF and COPD, treated with ER. CONCLUSION Patients with CHF who undergo ER improve similarly in their exercise performance and health status to COPD. Combined training programs for COPD and CHF are effective and feasible, such that service provision could be targeted around common disability rather than the primary organ disease.
Collapse
Affiliation(s)
- R A Evans
- Dept. of Respiratory Medicine, Allergy and Thoracic Surgery, University Hospitals of Leicester NHS trust, Glenfield Hospital, Leicester, United Kingdom.
| | | | | | | | | | | |
Collapse
|