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Rehm A, Clegg R, Linardatou Novak P, Shehata R. Dislocation of the hip after normal sonographic screening examination: a case report and literature review. Ann R Coll Surg Engl 2024. [PMID: 38445588 DOI: 10.1308/rcsann.2023.0107] [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: 03/07/2024] Open
Affiliation(s)
- A Rehm
- Cambridge University Hospitals NHS Foundation Trust, UK
| | - R Clegg
- Cambridge University Hospitals NHS Foundation Trust, UK
| | | | - R Shehata
- Cambridge University Hospitals NHS Foundation Trust, UK
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2
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Antonelli A, Smith RJ, Perrigo AL, Crottini A, Hackel J, Testo W, Farooq H, Torres Jiménez MF, Andela N, Andermann T, Andriamanohera AM, Andriambololonera S, Bachman SP, Bacon CD, Baker WJ, Belluardo F, Birkinshaw C, Borrell JS, Cable S, Canales NA, Carrillo JD, Clegg R, Clubbe C, Cooke RSC, Damasco G, Dhanda S, Edler D, Faurby S, de Lima Ferreira P, Fisher BL, Forest F, Gardiner LM, Goodman SM, Grace OM, Guedes TB, Henniges MC, Hill R, Lehmann CER, Lowry PP, Marline L, Matos-Maraví P, Moat J, Neves B, Nogueira MGC, Onstein RE, Papadopulos AST, Perez-Escobar OA, Phelps LN, Phillipson PB, Pironon S, Przelomska NAS, Rabarimanarivo M, Rabehevitra D, Raharimampionona J, Rajaonah MT, Rajaonary F, Rajaovelona LR, Rakotoarinivo M, Rakotoarisoa AA, Rakotoarisoa SE, Rakotomalala HN, Rakotonasolo F, Ralaiveloarisoa BA, Ramirez-Herranz M, Randriamamonjy JEN, Randriamboavonjy T, Randrianasolo V, Rasolohery A, Ratsifandrihamanana AN, Ravololomanana N, Razafiniary V, Razanajatovo H, Razanatsoa E, Rivers M, Sayol F, Silvestro D, Vorontsova MS, Walker K, Walker BE, Wilkin P, Williams J, Ziegler T, Zizka A, Ralimanana H. Madagascar’s extraordinary biodiversity: Evolution, distribution, and use. Science 2022; 378:eabf0869. [DOI: 10.1126/science.abf0869] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
Madagascar’s biota is hyperdiverse and includes exceptional levels of endemicity. We review the current state of knowledge on Madagascar’s past and current terrestrial and freshwater biodiversity by compiling and presenting comprehensive data on species diversity, endemism, and rates of species description and human uses, in addition to presenting an updated and simplified map of vegetation types. We report a substantial increase of records and species new to science in recent years; however, the diversity and evolution of many groups remain practically unknown (e.g., fungi and most invertebrates). Digitization efforts are increasing the resolution of species richness patterns and we highlight the crucial role of field- and collections-based research for advancing biodiversity knowledge and identifying gaps in our understanding, particularly as species richness corresponds closely to collection effort. Phylogenetic diversity patterns mirror that of species richness and endemism in most of the analyzed groups. We highlight humid forests as centers of diversity and endemism because of their role as refugia and centers of recent and rapid radiations. However, the distinct endemism of other areas, such as the grassland-woodland mosaic of the Central Highlands and the spiny forest of the southwest, is also biologically important despite lower species richness. The documented uses of Malagasy biodiversity are manifold, with much potential for the uncovering of new useful traits for food, medicine, and climate mitigation. The data presented here showcase Madagascar as a unique “living laboratory” for our understanding of evolution and the complex interactions between people and nature. The gathering and analysis of biodiversity data must continue and accelerate if we are to fully understand and safeguard this unique subset of Earth’s biodiversity.
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Affiliation(s)
- Alexandre Antonelli
- Royal Botanic Gardens, Kew, Richmond, Surrey, UK
- Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
- Gothenburg Global Biodiversity Centre, University of Gothenburg, Gothenburg, Sweden
- Department of Biology, University of Oxford, Oxford, UK
| | - Rhian J. Smith
- Royal Botanic Gardens, Kew, Richmond, Surrey, UK
- Gothenburg Global Biodiversity Centre, University of Gothenburg, Gothenburg, Sweden
| | - Allison L. Perrigo
- Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
- Gothenburg Global Biodiversity Centre, University of Gothenburg, Gothenburg, Sweden
| | - Angelica Crottini
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Universidade do Porto, Vairão, Portugal
- Departamento de Biologia, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
- BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, Vairão, Portugal
| | - Jan Hackel
- Royal Botanic Gardens, Kew, Richmond, Surrey, UK
| | - Weston Testo
- Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
- Gothenburg Global Biodiversity Centre, University of Gothenburg, Gothenburg, Sweden
- Field Museum of Natural History, Chicago, Illinois, USA
| | - Harith Farooq
- Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
- Gothenburg Global Biodiversity Centre, University of Gothenburg, Gothenburg, Sweden
- Faculty of Natural Sciences, Lúrio University, Pemba, Cabo Delgado Province, Mozambique
| | - Maria F. Torres Jiménez
- Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
- Gothenburg Global Biodiversity Centre, University of Gothenburg, Gothenburg, Sweden
- Institute of Biosciences, Life Sciences Centre, Vilnius University, Vilnius, Lithuania
| | - Niels Andela
- School of Earth and Environmental Sciences, Cardiff University, Cardiff, Wales, UK
| | - Tobias Andermann
- Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
- Gothenburg Global Biodiversity Centre, University of Gothenburg, Gothenburg, Sweden
- Department of Organismal Biology, SciLifeLab, Uppsala University, Uppsala, Sweden
- Department of Biology, University of Fribourg, Fribourg, Switzerland
| | | | | | | | - Christine D. Bacon
- Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
- Gothenburg Global Biodiversity Centre, University of Gothenburg, Gothenburg, Sweden
| | | | - Francesco Belluardo
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Universidade do Porto, Vairão, Portugal
- Departamento de Biologia, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
- BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, Vairão, Portugal
| | - Chris Birkinshaw
- Missouri Botanical Garden, Madagascar Program, Antananarivo, Madagascar
- Missouri Botanical Garden, St. Louis, Missouri, USA
| | | | - Stuart Cable
- Royal Botanic Gardens, Kew, Richmond, Surrey, UK
| | - Nataly A. Canales
- Natural History Museum of Denmark, University of Copenhagen, Copenhagen, Denmark
| | - Juan D. Carrillo
- Gothenburg Global Biodiversity Centre, University of Gothenburg, Gothenburg, Sweden
- Department of Biology, University of Fribourg, Fribourg, Switzerland
- CR2P, Muséum National d’Histoire Naturelle, Paris, France
- Swiss Institute of Bioinformatics, Fribourg, Switzerland
| | - Rosie Clegg
- Royal Botanic Gardens, Kew, Richmond, Surrey, UK
- Department of Geography, University of Exeter, Exeter, Devon, UK
| | - Colin Clubbe
- Royal Botanic Gardens, Kew, Richmond, Surrey, UK
| | - Robert S. C. Cooke
- Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
- Gothenburg Global Biodiversity Centre, University of Gothenburg, Gothenburg, Sweden
- UK Centre for Ecology and Hydrology, Wallingford, UK
| | - Gabriel Damasco
- Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
- Departamento de Botânica e Zoologia, Universidade Federal do Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil
| | - Sonia Dhanda
- Royal Botanic Gardens, Kew, Richmond, Surrey, UK
| | - Daniel Edler
- Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
- Gothenburg Global Biodiversity Centre, University of Gothenburg, Gothenburg, Sweden
- Integrated Science Lab, Department of Physics, Umeå University, Umeå, Sweden
| | - Søren Faurby
- Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
- Gothenburg Global Biodiversity Centre, University of Gothenburg, Gothenburg, Sweden
| | - Paola de Lima Ferreira
- Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
- Gothenburg Global Biodiversity Centre, University of Gothenburg, Gothenburg, Sweden
- Biology Centre CAS, Institute of Entomology, České Budějovice, Czech Republic
| | - Brian L. Fisher
- California Academy of Sciences, San Francisco, California, USA
| | - Félix Forest
- Royal Botanic Gardens, Kew, Richmond, Surrey, UK
| | - Lauren M. Gardiner
- Cambridge University Herbarium, Department of Plant Sciences, University of Cambridge, Cambridge, UK
| | - Steven M. Goodman
- Field Museum of Natural History, Chicago, Illinois, USA
- Association Vahatra, Antananarivo, Madagascar
| | | | - Thaís B. Guedes
- Instituto de Biologia, Universidade Estadual de Campinas, Unicamp, Campinas, São Paulo, Brazil
| | - Marie C. Henniges
- Royal Botanic Gardens, Kew, Richmond, Surrey, UK
- School of Biological and Behavioural Sciences, Queen Mary University of London, London, UK
| | - Rowena Hill
- Royal Botanic Gardens, Kew, Richmond, Surrey, UK
- School of Biological and Behavioural Sciences, Queen Mary University of London, London, UK
| | - Caroline E. R. Lehmann
- Royal Botanic Garden Edinburgh, Edinburgh, UK
- School of GeoSciences, University of Edinburgh, Edinburgh, UK
| | - Porter P. Lowry
- Missouri Botanical Garden, St. Louis, Missouri, USA
- Institut de Systématique, Évolution, et Biodiversité (ISYEB), Muséum National d’Histoire Naturelle, Paris, France
| | - Lovanomenjanahary Marline
- Gothenburg Global Biodiversity Centre, University of Gothenburg, Gothenburg, Sweden
- Royal Botanic Gardens, Kew, Kew Madagascar Conservation Centre, Antananarivo, Madagascar
- Association Vahatra, Antananarivo, Madagascar
| | - Pável Matos-Maraví
- Gothenburg Global Biodiversity Centre, University of Gothenburg, Gothenburg, Sweden
- Biology Centre CAS, Institute of Entomology, České Budějovice, Czech Republic
| | - Justin Moat
- Royal Botanic Gardens, Kew, Richmond, Surrey, UK
| | - Beatriz Neves
- Gothenburg Global Biodiversity Centre, University of Gothenburg, Gothenburg, Sweden
- Museu Nacional, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Matheus G. C. Nogueira
- Gothenburg Global Biodiversity Centre, University of Gothenburg, Gothenburg, Sweden
- Museu Nacional, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Renske E. Onstein
- Naturalis Biodiversity Center, Darwinweg 2, 2333CR Leiden, the Netherlands
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Leipzig, Germany
| | | | | | - Leanne N. Phelps
- Royal Botanic Garden Edinburgh, Edinburgh, UK
- School of GeoSciences, University of Edinburgh, Edinburgh, UK
| | - Peter B. Phillipson
- Missouri Botanical Garden, St. Louis, Missouri, USA
- Institut de Systématique, Évolution, et Biodiversité (ISYEB), Muséum National d’Histoire Naturelle, Paris, France
| | - Samuel Pironon
- Royal Botanic Gardens, Kew, Richmond, Surrey, UK
- UN Environment Programme World Conservation Monitoring Centre (UNEP-WCMC), Cambridge, UK
| | - Natalia A. S. Przelomska
- Royal Botanic Gardens, Kew, Richmond, Surrey, UK
- Department of Anthropology, Smithsonian National Museum of Natural History, Washington, DC, USA
| | | | - David Rabehevitra
- Royal Botanic Gardens, Kew, Kew Madagascar Conservation Centre, Antananarivo, Madagascar
| | | | - Mamy Tiana Rajaonah
- Royal Botanic Gardens, Kew, Kew Madagascar Conservation Centre, Antananarivo, Madagascar
| | - Fano Rajaonary
- Missouri Botanical Garden, Madagascar Program, Antananarivo, Madagascar
| | - Landy R. Rajaovelona
- Royal Botanic Gardens, Kew, Kew Madagascar Conservation Centre, Antananarivo, Madagascar
| | - Mijoro Rakotoarinivo
- Department of Plant Biology and Ecology, University of Antananarivo, Antananarivo, Madagascar
| | - Amédée A. Rakotoarisoa
- Royal Botanic Gardens, Kew, Kew Madagascar Conservation Centre, Antananarivo, Madagascar
| | - Solofo E. Rakotoarisoa
- Royal Botanic Gardens, Kew, Kew Madagascar Conservation Centre, Antananarivo, Madagascar
| | - Herizo N. Rakotomalala
- Royal Botanic Gardens, Kew, Kew Madagascar Conservation Centre, Antananarivo, Madagascar
| | - Franck Rakotonasolo
- Royal Botanic Gardens, Kew, Kew Madagascar Conservation Centre, Antananarivo, Madagascar
| | | | - Myriam Ramirez-Herranz
- Gothenburg Global Biodiversity Centre, University of Gothenburg, Gothenburg, Sweden
- Instituto de Ecología y Biodiversidad, University of La Serena, La Serena, Chile
- Programa de Doctorado en Biología y Ecología Aplicada, Universidad Católica del Norte, Universidad de La Serena, La Serena, Chile
| | | | | | - Vonona Randrianasolo
- Royal Botanic Gardens, Kew, Kew Madagascar Conservation Centre, Antananarivo, Madagascar
| | | | | | | | - Velosoa Razafiniary
- Royal Botanic Gardens, Kew, Kew Madagascar Conservation Centre, Antananarivo, Madagascar
| | - Henintsoa Razanajatovo
- Royal Botanic Gardens, Kew, Kew Madagascar Conservation Centre, Antananarivo, Madagascar
| | - Estelle Razanatsoa
- Plant Conservation Unit, Department of Biological Sciences, University of Cape Town, South Africa
| | - Malin Rivers
- Botanic Gardens Conservation International, Kew, Richmond, Surrey, UK
| | - Ferran Sayol
- Gothenburg Global Biodiversity Centre, University of Gothenburg, Gothenburg, Sweden
- Centre for Biodiversity and Environment Research, Department of Genetics, Evolution and Environment, University College London, London, UK
| | - Daniele Silvestro
- Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
- Gothenburg Global Biodiversity Centre, University of Gothenburg, Gothenburg, Sweden
- Department of Biology, University of Fribourg, Fribourg, Switzerland
- Swiss Institute of Bioinformatics, Fribourg, Switzerland
| | | | - Kim Walker
- Royal Botanic Gardens, Kew, Richmond, Surrey, UK
- Royal Holloway, University of London, Egham, Surrey, UK
| | | | - Paul Wilkin
- Royal Botanic Gardens, Kew, Richmond, Surrey, UK
| | | | - Thomas Ziegler
- Cologne Zoo, Cologne, Germany
- Institute of Zoology, University of Cologne, Cologne, Germany
| | - Alexander Zizka
- Department of Biology, Philipps-University Marburg, Marburg, Germany
| | - Hélène Ralimanana
- Royal Botanic Gardens, Kew, Kew Madagascar Conservation Centre, Antananarivo, Madagascar
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3
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Ralimanana H, Perrigo AL, Smith RJ, Borrell JS, Faurby S, Rajaonah MT, Randriamboavonjy T, Vorontsova MS, Cooke RSC, Phelps LN, Sayol F, Andela N, Andermann T, Andriamanohera AM, Andriambololonera S, Bachman SP, Bacon CD, Baker WJ, Belluardo F, Birkinshaw C, Cable S, Canales NA, Carrillo JD, Clegg R, Clubbe C, Crottini A, Damasco G, Dhanda S, Edler D, Farooq H, de Lima Ferreira P, Fisher BL, Forest F, Gardiner LM, Goodman SM, Grace OM, Guedes TB, Hackel J, Henniges MC, Hill R, Lehmann CER, Lowry PP, Marline L, Matos-Maraví P, Moat J, Neves B, Nogueira MGC, Onstein RE, Papadopulos AST, Perez-Escobar OA, Phillipson PB, Pironon S, Przelomska NAS, Rabarimanarivo M, Rabehevitra D, Raharimampionona J, Rajaonary F, Rajaovelona LR, Rakotoarinivo M, Rakotoarisoa AA, Rakotoarisoa SE, Rakotomalala HN, Rakotonasolo F, Ralaiveloarisoa BA, Ramirez-Herranz M, Randriamamonjy JEN, Randrianasolo V, Rasolohery A, Ratsifandrihamanana AN, Ravololomanana N, Razafiniary V, Razanajatovo H, Razanatsoa E, Rivers M, Silvestro D, Testo W, Torres Jiménez MF, Walker K, Walker BE, Wilkin P, Williams J, Ziegler T, Zizka A, Antonelli A. Madagascar’s extraordinary biodiversity: Threats and opportunities. Science 2022; 378:eadf1466. [DOI: 10.1126/science.adf1466] [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: 12/03/2022]
Abstract
Madagascar’s unique biota is heavily affected by human activity and is under intense threat. Here, we review the current state of knowledge on the conservation status of Madagascar’s terrestrial and freshwater biodiversity by presenting data and analyses on documented and predicted species-level conservation statuses, the most prevalent and relevant threats, ex situ collections and programs, and the coverage and comprehensiveness of protected areas. The existing terrestrial protected area network in Madagascar covers 10.4% of its land area and includes at least part of the range of the majority of described native species of vertebrates with known distributions (97.1% of freshwater fishes, amphibians, reptiles, birds, and mammals combined) and plants (67.7%). The overall figures are higher for threatened species (97.7% of threatened vertebrates and 79.6% of threatened plants occurring within at least one protected area). International Union for Conservation of Nature (IUCN) Red List assessments and Bayesian neural network analyses for plants identify overexploitation of biological resources and unsustainable agriculture as the most prominent threats to biodiversity. We highlight five opportunities for action at multiple levels to ensure that conservation and ecological restoration objectives, programs, and activities take account of complex underlying and interacting factors and produce tangible benefits for the biodiversity and people of Madagascar.
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Affiliation(s)
- Hélène Ralimanana
- Royal Botanic Gardens, Kew, Kew Madagascar Conservation Centre, Antananarivo, Madagascar
| | - Allison L. Perrigo
- Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
- Gothenburg Global Biodiversity Centre, University of Gothenburg, Gothenburg, Sweden
| | - Rhian J. Smith
- Gothenburg Global Biodiversity Centre, University of Gothenburg, Gothenburg, Sweden
- Royal Botanic Gardens, Kew, Richmond, Surrey, UK
| | | | - Søren Faurby
- Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
- Gothenburg Global Biodiversity Centre, University of Gothenburg, Gothenburg, Sweden
| | - Mamy Tiana Rajaonah
- Royal Botanic Gardens, Kew, Kew Madagascar Conservation Centre, Antananarivo, Madagascar
| | | | | | - Robert S. C. Cooke
- Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
- Gothenburg Global Biodiversity Centre, University of Gothenburg, Gothenburg, Sweden
- UK Centre for Ecology and Hydrology, Wallingford, UK
| | - Leanne N. Phelps
- School of GeoSciences, University of Edinburgh, Edinburgh, UK
- Royal Botanic Garden Edinburgh, Edinburgh, UK
| | - Ferran Sayol
- Gothenburg Global Biodiversity Centre, University of Gothenburg, Gothenburg, Sweden
- Centre for Biodiversity and Environment Research, Department of Genetics, Evolution and Environment, University College London, London, UK
| | - Niels Andela
- School of Earth and Environmental Sciences, Cardiff University, Cardiff, Wales, UK
| | - Tobias Andermann
- Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
- Gothenburg Global Biodiversity Centre, University of Gothenburg, Gothenburg, Sweden
- Department of Organismal Biology, SciLifeLab, Uppsala University, Uppsala, Sweden
- Department of Biology, University of Fribourg, Fribourg, Switzerland
| | | | | | | | - Christine D. Bacon
- Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
- Gothenburg Global Biodiversity Centre, University of Gothenburg, Gothenburg, Sweden
| | | | - Francesco Belluardo
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Universidade do Porto, Vairão, Portugal
- Departamento de Biologia, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
- BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, Vairão, Portugal
| | - Chris Birkinshaw
- Missouri Botanical Garden, Madagascar Program, Antananarivo, Madagascar
- Missouri Botanical Garden, St. Louis, MO, USA
| | - Stuart Cable
- Royal Botanic Gardens, Kew, Richmond, Surrey, UK
| | - Nataly A. Canales
- Natural History Museum of Denmark, University of Copenhagen, Copenhagen, Denmark
| | - Juan D. Carrillo
- Gothenburg Global Biodiversity Centre, University of Gothenburg, Gothenburg, Sweden
- Department of Biology, University of Fribourg, Fribourg, Switzerland
- CR2P, Muséum National d’Histoire Naturelle, Paris, France
- Swiss Institute of Bioinformatics, Fribourg, Switzerland
| | - Rosie Clegg
- Royal Botanic Gardens, Kew, Richmond, Surrey, UK
- Department of Geography, University of Exeter, Exeter, Devon, UK
| | - Colin Clubbe
- Royal Botanic Gardens, Kew, Richmond, Surrey, UK
| | - Angelica Crottini
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Universidade do Porto, Vairão, Portugal
- Departamento de Biologia, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
- BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, Vairão, Portugal
| | - Gabriel Damasco
- Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
- Departamento de Botânica e Zoologia, Universidade Federal do Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil
| | - Sonia Dhanda
- Royal Botanic Gardens, Kew, Richmond, Surrey, UK
| | - Daniel Edler
- Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
- Gothenburg Global Biodiversity Centre, University of Gothenburg, Gothenburg, Sweden
- Integrated Science Lab, Department of Physics, Umeå University, Umeå, Sweden
| | - Harith Farooq
- Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
- Gothenburg Global Biodiversity Centre, University of Gothenburg, Gothenburg, Sweden
- Faculty of Natural Sciences, Lúrio University, Pemba, Cabo Delgado Province, Mozambique
| | - Paola de Lima Ferreira
- Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
- Gothenburg Global Biodiversity Centre, University of Gothenburg, Gothenburg, Sweden
- Biology Centre CAS, Institute of Entomology, České Budějovice, Czech Republic
| | | | - Félix Forest
- Royal Botanic Gardens, Kew, Richmond, Surrey, UK
| | - Lauren M. Gardiner
- Cambridge University Herbarium, Department of Plant Sciences, University of Cambridge, Cambridge, UK
| | - Steven M. Goodman
- Association Vahatra, Antananarivo, Madagascar
- Field Museum of Natural History, Chicago, IL, USA
| | | | - Thaís B. Guedes
- Instituto de Biologia, Universidade Estadual de Campinas, Unicamp, Campinas, São Paulo, Brazil
| | - Jan Hackel
- Royal Botanic Gardens, Kew, Richmond, Surrey, UK
| | - Marie C. Henniges
- Royal Botanic Gardens, Kew, Richmond, Surrey, UK
- School of Biological and Behavioural Sciences, Queen Mary University of London, London, UK
| | - Rowena Hill
- Royal Botanic Gardens, Kew, Richmond, Surrey, UK
- School of Biological and Behavioural Sciences, Queen Mary University of London, London, UK
| | - Caroline E. R. Lehmann
- School of GeoSciences, University of Edinburgh, Edinburgh, UK
- Royal Botanic Garden Edinburgh, Edinburgh, UK
| | - Porter P. Lowry
- Missouri Botanical Garden, St. Louis, MO, USA
- Institut de Systématique, Évolution, et Biodiversité (ISYEB), Muséum National d’Histoire Naturelle, Paris, France
| | - Lovanomenjanahary Marline
- Royal Botanic Gardens, Kew, Kew Madagascar Conservation Centre, Antananarivo, Madagascar
- Gothenburg Global Biodiversity Centre, University of Gothenburg, Gothenburg, Sweden
- Association Vahatra, Antananarivo, Madagascar
| | - Pável Matos-Maraví
- Gothenburg Global Biodiversity Centre, University of Gothenburg, Gothenburg, Sweden
- Biology Centre CAS, Institute of Entomology, České Budějovice, Czech Republic
| | - Justin Moat
- Royal Botanic Gardens, Kew, Richmond, Surrey, UK
| | - Beatriz Neves
- Gothenburg Global Biodiversity Centre, University of Gothenburg, Gothenburg, Sweden
- Museu Nacional, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Matheus G. C. Nogueira
- Gothenburg Global Biodiversity Centre, University of Gothenburg, Gothenburg, Sweden
- Museu Nacional, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Renske E. Onstein
- Naturalis Biodiversity Center, Leiden, Netherlands
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Leipzig, Germany
| | | | | | - Peter B. Phillipson
- Missouri Botanical Garden, St. Louis, MO, USA
- Institut de Systématique, Évolution, et Biodiversité (ISYEB), Muséum National d’Histoire Naturelle, Paris, France
| | - Samuel Pironon
- Royal Botanic Gardens, Kew, Richmond, Surrey, UK
- UN Environment Programme World Conservation Monitoring Centre (UNEP-WCMC), Cambridge, UK
| | - Natalia A. S. Przelomska
- Royal Botanic Gardens, Kew, Richmond, Surrey, UK
- Department of Anthropology, Smithsonian National Museum of Natural History, Washington, DC, USA
| | | | - David Rabehevitra
- Royal Botanic Gardens, Kew, Kew Madagascar Conservation Centre, Antananarivo, Madagascar
| | | | - Fano Rajaonary
- Missouri Botanical Garden, Madagascar Program, Antananarivo, Madagascar
| | - Landy R. Rajaovelona
- Royal Botanic Gardens, Kew, Kew Madagascar Conservation Centre, Antananarivo, Madagascar
| | - Mijoro Rakotoarinivo
- Department of Plant Biology and Ecology, University of Antananarivo, Antananarivo, Madagascar
| | - Amédée A. Rakotoarisoa
- Royal Botanic Gardens, Kew, Kew Madagascar Conservation Centre, Antananarivo, Madagascar
| | - Solofo E. Rakotoarisoa
- Royal Botanic Gardens, Kew, Kew Madagascar Conservation Centre, Antananarivo, Madagascar
| | - Herizo N. Rakotomalala
- Royal Botanic Gardens, Kew, Kew Madagascar Conservation Centre, Antananarivo, Madagascar
| | - Franck Rakotonasolo
- Royal Botanic Gardens, Kew, Kew Madagascar Conservation Centre, Antananarivo, Madagascar
| | | | - Myriam Ramirez-Herranz
- Gothenburg Global Biodiversity Centre, University of Gothenburg, Gothenburg, Sweden
- Instituto de Ecología y Biodiversidad, University of La Serena, La Serena, Chile
- Programa de Doctorado en Biología y Ecología Aplicada, Universidad Católica del Norte, Universidad de La Serena, La Serena, Chile
| | | | - Vonona Randrianasolo
- Royal Botanic Gardens, Kew, Kew Madagascar Conservation Centre, Antananarivo, Madagascar
| | | | | | | | - Velosoa Razafiniary
- Royal Botanic Gardens, Kew, Kew Madagascar Conservation Centre, Antananarivo, Madagascar
| | - Henintsoa Razanajatovo
- Royal Botanic Gardens, Kew, Kew Madagascar Conservation Centre, Antananarivo, Madagascar
| | - Estelle Razanatsoa
- Plant Conservation Unit, Department of Biological Sciences, University of Cape Town, South Africa
| | - Malin Rivers
- Botanic Gardens Conservation International, Kew, Richmond, Surrey, UK
| | - Daniele Silvestro
- Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
- Gothenburg Global Biodiversity Centre, University of Gothenburg, Gothenburg, Sweden
- Department of Biology, University of Fribourg, Fribourg, Switzerland
- Swiss Institute of Bioinformatics, Fribourg, Switzerland
| | - Weston Testo
- Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
- Gothenburg Global Biodiversity Centre, University of Gothenburg, Gothenburg, Sweden
- Field Museum of Natural History, Chicago, IL, USA
| | - Maria F. Torres Jiménez
- Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
- Gothenburg Global Biodiversity Centre, University of Gothenburg, Gothenburg, Sweden
- Institute of Biosciences, Life Sciences Centre, Vilnius University, Vilnius, Lithuania
| | - Kim Walker
- Royal Botanic Gardens, Kew, Richmond, Surrey, UK
- Royal Holloway, University of London, Egham, Surrey, UK
| | | | - Paul Wilkin
- Royal Botanic Gardens, Kew, Richmond, Surrey, UK
| | | | - Thomas Ziegler
- Cologne Zoo, Cologne, Germany
- Institute of Zoology, University of Cologne, Cologne, Germany
| | - Alexander Zizka
- Department of Biology, Philipps-University Marburg, Marburg, Germany
| | - Alexandre Antonelli
- Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
- Gothenburg Global Biodiversity Centre, University of Gothenburg, Gothenburg, Sweden
- Royal Botanic Gardens, Kew, Richmond, Surrey, UK
- Department of Biology, University of Oxford, Oxford, UK
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Stevens KN, Creanor S, Jeffery A, Whone A, Zajicek J, Foggo A, Jones B, Chapman R, Cocking L, Wilks J, Webb D, Carroll C, Inches J, Underwood D, Frost J, James A, Schofield C, James R, O’Reilly C, Sheridan R, Statton S, Goff A, Russell T, Whitcher A, Craw S, Lewis A, Sophia R, Amar K, Hernandez R, Pitcher A, Carvey S, Hamlin R, Lyell V, Aubry L, Carey G, Coebergh J, Mojela I, Molloy S, Berceruelo Bergaz Y, Camera B, Campbell P, Morris H, Samakomva T, Schrag A, Fuller S, Misbahuddin A, Parker L, Visentin E, Gallehawk S, Rudd J, Singh S, Wilson S, Creven J, Croucher Y, Tluk S, Watts P, Hargreaves S, Johnson D, Worboys L, Worth P, Brooke J, Kobylecki C, Parker V, Johnson L, Joseph R, Melville J, Raw J, Birt J, Hare M, Shaik S, Alty J, Cosgrove J, Burn D, Green A, McNichol A, Pavese N, Pilkington H, Price M, Walker K, Chaudhuri R, Podlewska A, Reddy P, Trivedi D, Bandmann O, Clegg R, Cole G, Emery A, Dostal V, Graham J, Keshet-Price J, Mamutse G, Miller-Fik A, Wiltshire A, Wright C, Dixon K, Abdelhafiz A, Rose J. Evaluation of Simvastatin as a Disease-Modifying Treatment for Patients With Parkinson Disease: A Randomized Clinical Trial. JAMA Neurol 2022; 79:1232-1241. [PMID: 36315128 PMCID: PMC9623477 DOI: 10.1001/jamaneurol.2022.3718] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Importance Current treatments manage symptoms of Parkinson disease (PD), but no known treatment slows disease progression. Preclinical and epidemiological studies support the potential use of statins as disease-modifying therapy. Objective To determine whether simvastatin has potential as a disease-modifying treatment for patients with moderate PD. Design, Setting, and Participants This randomized clinical trial, a double-blind, parallel-group, placebo-controlled futility trial, was conducted between March 2016 and May 2020 within 23 National Health Service Trusts in England. Participants aged 40 to 90 years with a diagnosis of idiopathic PD, with a modified Hoehn and Yahr stage of 3.0 or less while taking medication, and taking dopaminergic medication with wearing-off phenomenon were included. Data were analyzed from May 2020 to September 2020, with additional analysis in February 2021. Interventions Participants were allocated 1:1 to simvastatin or matched placebo via a computer-generated random sequence, stratified by site and Hoehn and Yahr stage. In the simvastatin arm, participants entered a 1-month phase of simvastatin, 40 mg daily, followed by 23 months of simvastatin, 80 mg daily, before a 2-month washout period. Main Outcomes and Measures The prespecified primary outcome was 24-month change in Movement Disorder Society Unified Parkinson Disease Rating Scale (MDS-UPDRS) part III score measured while not taking medication (high scores indicate worse outcome). The primary futility analysis included participants who commenced the 80-mg phase and had valid primary outcome data. The safety analysis included all participants who commenced trial treatment and is reported by dose at time of event. Results Of 332 patients assessed for eligibility, 32 declined and 65 were ineligible. Of 235 recruited participants, 97 (41%) were female, 233 (99%) were White, and the mean (SD) age was 65.4 (9.4) years. A total of 216 patients progressed to the 80-mg dose. Primary outcome analysis (n = 178) indicated the simvastatin group had an additional deterioration in MDS-UPDRS III score while not taking medication at 24 months compared with the placebo group (1.52 points; 2-sided 80% CI, -0.77 to 3.80; 1-sided futility test P = .006). A total of 37 serious adverse events (AEs), including 3 deaths, and 171 AEs were reported for participants receiving 0-mg simvastatin; 37 serious AEs and 150 AEs were reported for participants taking 40 mg or 80 mg of simvastatin. Four participants withdrew from the trial because of an AE. Conclusions and Relevance In this randomized clinical trial, simvastatin was futile as a disease-modifying therapy in patients with PD of moderate severity, providing no evidence to support proceeding to a phase 3 trial. Trial Registration ISRCTN Identifier: 16108482.
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Affiliation(s)
- Kara N. Stevens
- Faculty of Health, University of Plymouth, Plymouth, United Kingdom,Exploristics Ltd, Belfast, United Kingdom
| | - Siobhan Creanor
- College of Medicine and Health, University of Exeter, Exeter, United Kingdom
| | - Alison Jeffery
- Faculty of Health, University of Plymouth, Plymouth, United Kingdom
| | - Alan Whone
- Bristol Medical School, University of Bristol, Bristol, United Kingdom
| | - John Zajicek
- School of Medicine, Medical and Biological Sciences, University of St Andrews, St Andrews, United Kingdom
| | - Andy Foggo
- School of Biological and Marine Sciences, Faculty of Science and Engineering, University of Plymouth, Plymouth, United Kingdom
| | - Ben Jones
- College of Medicine and Health, University of Exeter, Exeter, United Kingdom
| | - Rebecca Chapman
- Faculty of Health, University of Plymouth, Plymouth, United Kingdom
| | - Laura Cocking
- NIHR BioResource, University of Cambridge, Cambridge, United Kingdom
| | - Jonny Wilks
- MAC Clinical Research, Blackpool, United Kingdom
| | - Doug Webb
- Bristol Trials Centre, University of Bristol, Bristol, United Kingdom
| | - Camille Carroll
- Faculty of Health, University of Plymouth, Plymouth, United Kingdom
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Shakeshaft A, Laiou P, Abela E, Stavropoulos I, Richardson MP, Pal DK, Howell A, Hyde A, McQueen A, Duran A, Gaurav A, Collingwood A, Kitching A, Shakeshaft A, Papathanasiou A, Clough A, Gribbin A, Swain A, Needle A, Hall A, Smith A, Macleod A, Chhibda A, Fonferko-Shadrach B, Camara B, Petrova B, Stuart C, Hamilton C, Peacey C, Campbell C, Cotter C, Edwards C, Picton C, Busby C, Quamina C, Waite C, West C, Ng CC, Giavasi C, Backhouse C, Holliday C, Mewies C, Thow C, Egginton D, Dickerson D, Rice D, Mullan D, Daly D, Mcaleer D, Gardella E, Stephen E, Irvine E, Sacre E, Lin F, Castle G, Mackay G, Salim H, Cock H, Collier H, Cockerill H, Navarra H, Mhandu H, Crudgington H, Hayes I, Stavropoulos I, Daglish J, Smith J, Bartholomew J, Cotta J, Ceballos JP, Natarajan J, Crooks J, Quirk J, Bland J, Sidebottom J, Gesche J, Glenton J, Henry J, Davis J, Ball J, Selmer KK, Rhodes K, Holroyd K, Lim KS, O’Brien K, Thrasyvoulou L, Makawa L, Charles L, Richardson L, Nelson L, Walding L, Woodhead L, Ehiorobo L, Hawkins L, Adams L, Connon M, Home M, Baker M, Mencias M, Richardson MP, Sargent M, Syvertsen M, Milner M, Recto M, Chang M, O'Donoghue M, Young M, Ray M, Panjwani N, Ghaus N, Sudarsan N, Said N, Pickrell O, Easton P, Frattaroli P, McAlinden P, Harrison R, Swingler R, Wane R, Ramsay R, Møller RS, McDowall R, Clegg R, Uka S, White S, Truscott S, Francis S, Tittensor S, Sharman SJ, Chung SK, Patel S, Ellawela S, Begum S, Kempson S, Raj S, Bayley S, Warriner S, Kilroy S, MacFarlane S, Brown T, Samakomva T, Nortcliffe T, Calder V, Collins V, Parker V, Richmond V, Stern W, Haslam Z, Šobíšková Z, Agrawal A, Whiting A, Pratico A, Desurkar A, Saraswatula A, MacDonald B, Fong CY, Beier CP, Andrade D, Pauldhas D, Greenberg DA, Deekollu D, Pal DK, Jayachandran D, Lozsadi D, Galizia E, Scott F, Rubboli G, Angus-Leppan H, Talvik I, Takon I, Zarubova J, Koht J, Aram J, Lanyon K, Irwin K, Hamandi K, Yeung L, Strug LJ, Rees M, Reuber M, Kirkpatrick M, Taylor M, Maguire M, Koutroumanidis M, Khan M, Moran N, Striano P, Bala P, Bharat R, Pandey R, Mohanraj R, Thomas R, Belderbos R, Slaght SJ, Delamont S, Sastry S, Mariguddi S, Kumar S, Kumar S, Majeed T, Jegathasan U, Whitehouse W. Heterogeneity of resting-state EEG features in juvenile myoclonic epilepsy and controls. Brain Commun 2022; 4:fcac180. [PMID: 35873918 PMCID: PMC9301584 DOI: 10.1093/braincomms/fcac180] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 05/18/2022] [Accepted: 07/07/2022] [Indexed: 11/12/2022] Open
Abstract
Abnormal EEG features are a hallmark of epilepsy, and abnormal frequency and network features are apparent in EEGs from people with idiopathic generalized epilepsy in both ictal and interictal states. Here, we characterize differences in the resting-state EEG of individuals with juvenile myoclonic epilepsy and assess factors influencing the heterogeneity of EEG features. We collected EEG data from 147 participants with juvenile myoclonic epilepsy through the Biology of Juvenile Myoclonic Epilepsy study. Ninety-five control EEGs were acquired from two independent studies [Chowdhury et al. (2014) and EU-AIMS Longitudinal European Autism Project]. We extracted frequency and functional network-based features from 10 to 20 s epochs of resting-state EEG, including relative power spectral density, peak alpha frequency, network topology measures and brain network ictogenicity: a computational measure of the propensity of networks to generate seizure dynamics. We tested for differences between epilepsy and control EEGs using univariate, multivariable and receiver operating curve analysis. In addition, we explored the heterogeneity of EEG features within and between cohorts by testing for associations with potentially influential factors such as age, sex, epoch length and time, as well as testing for associations with clinical phenotypes including anti-seizure medication, and seizure characteristics in the epilepsy cohort. P-values were corrected for multiple comparisons. Univariate analysis showed significant differences in power spectral density in delta (2-5 Hz) (P = 0.0007, hedges' g = 0.55) and low-alpha (6-9 Hz) (P = 2.9 × 10-8, g = 0.80) frequency bands, peak alpha frequency (P = 0.000007, g = 0.66), functional network mean degree (P = 0.0006, g = 0.48) and brain network ictogenicity (P = 0.00006, g = 0.56) between epilepsy and controls. Since age (P = 0.009) and epoch length (P = 1.7 × 10-8) differed between the two groups and were potential confounders, we controlled for these covariates in multivariable analysis where disparities in EEG features between epilepsy and controls remained. Receiver operating curve analysis showed low-alpha power spectral density was optimal at distinguishing epilepsy from controls, with an area under the curve of 0.72. Lower average normalized clustering coefficient and shorter average normalized path length were associated with poorer seizure control in epilepsy patients. To conclude, individuals with juvenile myoclonic epilepsy have increased power of neural oscillatory activity at low-alpha frequencies, and increased brain network ictogenicity compared with controls, supporting evidence from studies in other epilepsies with considerable external validity. In addition, the impact of confounders on different frequency-based and network-based EEG features observed in this study highlights the need for careful consideration and control of these factors in future EEG research in idiopathic generalized epilepsy particularly for their use as biomarkers.
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Affiliation(s)
- Amy Shakeshaft
- Department of Basic & Clinical Neuroscience, Institute of Psychiatry, Psychology & Neuroscience, King’s College London, London, UK,MRC Centre for Neurodevelopmental Disorders, King’s College London, London, UK
| | - Petroula Laiou
- Department of Biostatistics and Health Informatics, Institute of Psychiatry, Psychology & Neuroscience, King’s College London, London, UK
| | - Eugenio Abela
- Department of Basic & Clinical Neuroscience, Institute of Psychiatry, Psychology & Neuroscience, King’s College London, London, UK
| | | | - Mark P Richardson
- Correspondence may also be addressed to: Professor Mark P Richardson Maurice Wohl Clinical Neurosciences Institute Institute of Psychiatry, Psychology & Neuroscience King’s College London, 5 Cutcombe Road, London SE5 9RX, UK E-mail:
| | - Deb K Pal
- Correspondence to: Professor Deb K Pal Maurice Wohl Clinical Neurosciences Institute Institute of Psychiatry, Psychology & Neuroscience King’s College London 5 Cutcombe Road, London SE5 9RX, UK E-mail:
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Clegg R, Woods R, Bennett P. Vascular Access: Patency and Interventions - A Retrospective Study. Int J Surg 2017. [DOI: 10.1016/j.ijsu.2017.08.539] [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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Affiliation(s)
- Rosie Clegg
- Tissue Viability Nurse Specialist, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield
| | - Simon Palfreyman
- Clinical Lecturer, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield
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Dabaj I, Heller F, Quijano-Roy S, Mah J, Rutkowski A, Estournet B, Clegg R, Wahbi K. G.P.146. Neuromuscul Disord 2014. [DOI: 10.1016/j.nmd.2014.06.176] [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: 11/30/2022]
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Gerull B, Kuriachan V, Clegg R, Exner D, Ferrier R, Desmarais S, Gordon P, Duff H. Next-generation sequencing identifies multiple disease associated variants in inherited heart conditions. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht308.p2299] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Abstract
Mammary epithelial cells from lactating cows were cultured onto inserts coated with type I collagen. Every second day, the rates of fatty acid synthesis and secretion were determined by measuring the amount of [14C]-labeled sodium acetate incorporated into lipids over a 4-h period. The [14C]-containing lipids were identified by thin layer chromatography fractionation. In parallel, the integrity of the cell layer was evaluated by measurement of transepithelial electrical resistance. The integrity increased progressively to reach a maximum after 8 d of culture. Cells incorporated acetate into lipids; 1.34% of acetate was incorporated into lipids produced by freshly isolated cells. This percentage decreased to 0.5% after 2 d of culture. Moreover, this capacity decreased with the duration in culture; on d 8, the rate of incorporation dropped to about 3% of that on d 2. In the cell extracts, the [14C]-labeled lipids were mainly triglycerides, although the proportion of diglycerides and phospholipids progressively increased as a part of total newly synthesized lipids. The proportion of triglycerides decreased 0.66 times between d 2 and 8 when the proportion of diglycerides and phospholipids increased 1.33 and 2.18 times, respectively. About 28% of the newly synthesized lipids were secreted within 4 h of incubation. Around 65 to 85% of these labeled lipids were found in the apical compartment, suggesting a partially vectorial secretion. But 58 to 80% of labeled lipids found in the apical and basolateral medium were free fatty acids. Functional tight junctions and incorporation of labeled fatty acids into triglycerides are not compatible with an inferred status of complete dedifferentiation of the cell layer. Moreover, triglyceride secretion seems compromised, probably due to the lack of an appropriate cell environment and cell shape.
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Affiliation(s)
- I Ernens
- Hannah Research Institute, Hannah Research Park, Ayr, KA6 5HL, Scotland, UK.
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Clegg R. Bragdon v. Abbott, asymptomatic genetic conditions, and antidiscrimination law: a conservative perspective. J Health Care Law Policy 2000; 3:409-29. [PMID: 15015487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Affiliation(s)
- R Clegg
- Center for Equal Opportunity, Washington, DC, USA
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Packard CJ, Boag DE, Clegg R, Bedford D, Shepherd J. Effects of 1,2-cyclohexanedione modification on the metabolism of very low density lipoprotein apolipoprotein B: potential role of receptors in intermediate density lipoprotein catabolism. J Lipid Res 1985; 26:1058-67. [PMID: 4067428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
The conversion of very low density (VLDL) to low density lipoproteins (LDL) is a two-step process. The first step is mediated by lipoprotein lipase, but the mechanism responsible for the second is obscure. In this study we examined the possible involvement of receptors at this stage. Apolipoprotein B (apoB)-containing lipoproteins were separated into three fractions, VLDL (Sf 100-400), an intermediate fraction IDL (Sf 12-100), and LDL (Sf 0-12). Autologous 125I-labeled VLDL and 131I-labeled 1,2-cyclohexanedione-modified VLDL were injected into the plasma of four normal subjects and the rate of transfer of apoB radioactivity was followed through IDL to LDL. Modification did not affect VLDL to IDL conversion. Thereafter, however, the catabolism of modified apoB in IDL was retarded and its appearance in LDL was delayed. Hence, functional arginine residues (and by implication, receptors) are required in this process. Confirmation of this was obtained by injecting 125I-labeled IDL and 131I-labeled cyclohexanedione-treated IDL into two additional subjects. Again, IDL metabolism was delayed by approximately 50% as a result of the modification. These data are consistent with the view that receptors are involved in the metabolism of intermediate density lipoprotein.
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Abstract
The purpose of this investigation was to determine the effectiveness of a stress management program (SMP). The research question was: What effect does a SMP have on the stress response of full time graduate nursing students? A secondary purpose was to determine personal and professional stressors experienced by graduate nursing students and their coping strategies. The SMP consisted of eight weekly one-hour sessions of demonstration and practice of the relaxation response, imagery, and diaphragmatic breathing. Caffeine intake was also reduced. The subjects were 30 female graduate nursing students between the ages of 25-43. They were randomly assigned to an experimental and a control group. Data collection consisted of weekly Palmar Sweat Prints (PSP), blood pressure measurements, and a Weekly Self-Report (WSR), designed to monitor adherence to the SMP by the experimental group and perceived stress and coping strategies of both groups. The A-State Anxiety Questionnaire and Rahe's Recent Life Changes Questionnaire (RRLQ) utilized a pre-/post-test design. Three of the four indicators demonstrated no significant differences in the stress response. The PSP indicated a significant difference (.05). RRLQ suggested no significant differences in the lives of the subjects of both groups. The WSR showed significantly more professionally generated stressors than personally generated stressors. The control group reported significantly less strategies for coping with stress than the experimental group. Although the SMP was not practiced as suggested, its presence in one's cognitive repertoire significantly affects stress response and coping. Implications of this study are numerous.(ABSTRACT TRUNCATED AT 250 WORDS)
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