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Morris SR, Vavasour IM, Smolina A, MacMillan EL, Gilbert G, Lam M, Kozlowski P, Michal CA, Manning A, MacKay AL, Laule C. Myelin biomarkers in the healthy adult brain: Correlation, reproducibility, and the effect of fiber orientation. Magn Reson Med 2023; 89:1809-1824. [PMID: 36511247 DOI: 10.1002/mrm.29552] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 10/17/2022] [Accepted: 11/18/2022] [Indexed: 12/15/2022]
Abstract
PURPOSE We investigated the correlation, reproducibility, and effect of white matter fiber orientation for three myelin-sensitive MRI techniques: magnetization transfer ratio (MTR), inhomogeneous magnetization transfer ratio (ihMTR), and gradient and spin echo-derived myelin water fraction (MWF). METHODS We measured the three metrics in 17 white and three deep grey matter regions in 17 healthy adults at 3 T. RESULTS We found a strong correlation between ihMTR and MTR (r = 0.70, p < 0.001) and ihMTR and MWF (r = 0.79, p < 0.001), and a weaker correlation between MTR and MWF (r = 0.54, p < 0.001). The dynamic range in white matter was greatest for MWF (2.0%-27.5%), followed by MTR (14.4%-23.2%) and then ihMTR (1.2%-5.4%). The average scan-rescan coefficient of variation for white matter regions was 0.6% MTR, 0.3% ihMTR, and 0.7% MWF in metric units; however, when adjusted by the dynamic range, these became 6.3%, 6.1% and 2.8%, respectively. All three metrics varied with fiber direction: MWF and ihMTR were lower in white matter fibers perpendicular to B0 by 6% and 1%, respectively, compared with those parallel, whereas MTR was lower by 0.5% at about 40°, with the highest values at 90°. However, separating the apparent orientation dependence by white matter region revealed large dissimilarities in the trends, suggesting that real differences in myelination between regions are confounding the apparent orientation dependence measured using this method. CONCLUSION The strong correlation between ihMTR and MWF suggests that these techniques are measuring the same myelination; however, the larger dynamic range of MWF may provide more power to detect small differences in myelin.
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Affiliation(s)
- Sarah R Morris
- Radiology, University of British Columbia, Vancouver, British Columbia, Canada.,Physics & Astronomy, University of British Columbia, Vancouver, British Columbia, Canada.,International Collaboration on Repair Discoveries, University of British Columbia, Vancouver, British Columbia, Canada
| | - Irene M Vavasour
- Radiology, University of British Columbia, Vancouver, British Columbia, Canada.,International Collaboration on Repair Discoveries, University of British Columbia, Vancouver, British Columbia, Canada.,UBC MRI Research Center, University of British Columbia, Vancouver, British Columbia, Canada
| | - Anastasia Smolina
- Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada.,The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Erin L MacMillan
- Radiology, University of British Columbia, Vancouver, British Columbia, Canada.,UBC MRI Research Center, University of British Columbia, Vancouver, British Columbia, Canada.,MR Clinical Science, Philips Healthcare Canada, Mississauga, Ontario, Canada
| | - Guillaume Gilbert
- MR Clinical Science, Philips Healthcare Canada, Mississauga, Ontario, Canada
| | - Michelle Lam
- Physics & Astronomy, University of British Columbia, Vancouver, British Columbia, Canada.,UBC MRI Research Center, University of British Columbia, Vancouver, British Columbia, Canada
| | - Piotr Kozlowski
- Radiology, University of British Columbia, Vancouver, British Columbia, Canada.,Physics & Astronomy, University of British Columbia, Vancouver, British Columbia, Canada.,International Collaboration on Repair Discoveries, University of British Columbia, Vancouver, British Columbia, Canada.,UBC MRI Research Center, University of British Columbia, Vancouver, British Columbia, Canada
| | - Carl A Michal
- Physics & Astronomy, University of British Columbia, Vancouver, British Columbia, Canada
| | - Alan Manning
- Physics & Astronomy, University of British Columbia, Vancouver, British Columbia, Canada
| | - Alex L MacKay
- Radiology, University of British Columbia, Vancouver, British Columbia, Canada.,Physics & Astronomy, University of British Columbia, Vancouver, British Columbia, Canada.,UBC MRI Research Center, University of British Columbia, Vancouver, British Columbia, Canada
| | - Cornelia Laule
- Radiology, University of British Columbia, Vancouver, British Columbia, Canada.,Physics & Astronomy, University of British Columbia, Vancouver, British Columbia, Canada.,International Collaboration on Repair Discoveries, University of British Columbia, Vancouver, British Columbia, Canada.,UBC MRI Research Center, University of British Columbia, Vancouver, British Columbia, Canada.,Pathology & Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada
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Nolan GS, Dunne JA, Lee AE, Wade RG, Kiely AL, Pritchard Jones RO, Gardiner MD, Abbassi O, Abdelaty M, Ahmed F, Ahmed R, Ali S, Allan A, Allen L, Anderson I, Bakir A, Berwick D, Sarala BBN, Bhat W, Bloom O, Bolton L, Brady N, Campbell E, Capitelli-McMahon H, Cassell O, Chalhoub X, Chalmers R, Chan J, Chu HO, Collin T, Cooper K, Curran TA, Cussons D, Daruwalla M, Dearden A, Delikonstantinou I, Dobbs T, Dunlop R, El-Muttardi N, Eleftheriadou A, Elamin SE, Eriksson S, Exton R, Fourie LR, Freethy A, Gardner E, Geh JL, Georgiou A, Georgiou M, Gilbert P, Gkorila A, Green D, Haeney J, Hamilton S, Harper F, Harrison C, Heinze Z, Hemington-Gorse S, Hever P, Hili S, Holmes W, Hughes W, Ibrahim N, Ismail A, Jallali N, James NK, Jemec B, Jica R, Kaur A, Kazzazi D, Khan M, Khan N, Khashaba H, Khera B, Khoury A, Kiely J, Kumar S, Patel PK, Kumbasar DE, Kundasamy P, Kyle D, Langridge B, Liu C, Lo M, Macdonald C, Anandan SM, Mahdi M, Mandal A, Manning A, Markeson D, Matteucci P, McClymont L, Mikhail M, Miller MC, Munro S, Musajee A, Nasrallah F, Ng L, Nicholas R, Nicola A, Nikkhah D, O'Hara N, Odili J, Oudit D, Patel A, Patel C, Patel N, Patel P, Peach H, Phillips B, Pinder R, Pinto-Lopes R, Plonczak A, Quinnen N, Rafiq S, Rahman K, Ramjeeawon A, Rinkoff S, Sainsbury D, Schumacher K, Segaren N, Shahzad F, Shariff Z, Siddiqui A, Singh P, Sludden E, Smith JRO, Song M, Stodell M, Tanos G, Taylor K, Taylor L, Thomson D, Tiernan E, Totty JP, Vaingankar N, Toh V, Wensley K, Whitehead C, Whittam A, Wiener M, Wilson A, Wong KY, Wood S, Yeoh T, Yii NW, Yim G, Young R, Zberea D, Jain A. National audit of non-melanoma skin cancer excisions performed by plastic surgery in the UK. Br J Surg 2022; 109:1040-1043. [DOI: 10.1093/bjs/znac232] [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] [Received: 02/15/2022] [Accepted: 05/30/2022] [Indexed: 11/13/2022]
Abstract
A national, multi-centre audit of non-melanoma skin cancer excisions by plastic surgery.
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Affiliation(s)
- Grant S Nolan
- Department of Plastic and Reconstructive Surgery, Royal Preston Hospital, Lancashire Teaching Hospitals NHS Trust , Fulwood, Preston , UK
| | - Jonathan A Dunne
- Department of Plastic and Reconstructive Surgery, Charing Cross and St Mary’s Hospitals, Imperial College Healthcare NHS Trust , London , UK
| | - Alice E Lee
- Department of Plastic and Reconstructive Surgery, Charing Cross and St Mary’s Hospitals, Imperial College Healthcare NHS Trust , London , UK
| | - Ryckie G Wade
- Leeds Institute for Medical Research, University of Leeds , Leeds , UK
- Department of Plastic and Reconstructive Surgery, Leeds Teaching Hospitals NHS Trust , Leeds , UK
| | - Ailbhe L Kiely
- Department of Plastic and Reconstructive Surgery, Royal Preston Hospital, Lancashire Teaching Hospitals NHS Trust , Fulwood, Preston , UK
| | - Rowan O Pritchard Jones
- Department of Plastic and Reconstructive Surgery, Whiston Hospital, St Helens and Knowsley Teaching Hospitals NHS Trust , Prescot , UK
| | - Matthew D Gardiner
- Department of Plastic and Reconstructive Surgery, Wexham Park Hospital, Frimley Health NHS Foundation Trust, Wexham , Slough , UK
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford , Oxford , UK
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Abhilash Jain
- Department of Plastic and Reconstructive Surgery, Charing Cross and St Mary’s Hospitals, Imperial College Healthcare NHS Trust , London , UK
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford , Oxford , UK
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Sohn SY, Russell CD, Jamjoom AAB, Poon MT, Lawson McLean A, Ahmed AI, Abdulla MAH, Alalade A, Bailey M, Basu S, Baudracco I, Bayston R, Bhattacharya A, Bodkin P, Boissaud-Cooke M, Bojanic S, Brennan PM, Bulters DO, Buxton N, Chari A, Corns R, Coulter C, Coulter I, Critchley G, Dando A, Dardis R, Duddy J, Dyson E, Edwards R, Garnett M, Gatcher S, Georges H, Glancz LJ, Gray WP, Hallet J, Harte J, Haylock-Vize P, Hutchinson PJ, Humphreys H, Jenkinson MD, Joannides AJ, Kandasamy J, Kitchen J, Kolias AG, Loan JJM, Ma R, Madder H, Mallucci CL, Manning A, Mcelligott S, Mukerji N, Narayanamurthy H, O’Brien D, Okasha M, Papadopoulos M, Phan V, Phang I, Poots J, Rajaraman C, Roach J, Ross N, Sharouf F, Shastin D, Simms N, Steele L, Solth A, Tajsic T, Talibi S, Thanabalasundaram G, Vintu M, Wan Y, Wang D, Watkins L, Whitehouse K, Whitfield PC, Williams A, Zaben M. Comparison of suspected and confirmed internal EVD-related infections: a prospective multi-centre U.K. observational study. Open Forum Infect Dis 2022; 9:ofac480. [PMID: 36267249 PMCID: PMC9578167 DOI: 10.1093/ofid/ofac480] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Accepted: 09/14/2022] [Indexed: 11/16/2022] Open
Abstract
Background Diagnosis of internal external ventricular drain (EVD)-related infections (iERI) is an area of diagnostic difficulty. Empiric treatment is often initiated on clinical suspicion. There is limited guidance around antimicrobial management of confirmed versus suspected iERI. Methods Data on patients requiring EVD insertion were collected from 21 neurosurgical units in the United Kingdom from 2014 to 2015. Confirmed iERI was defined as clinical suspicion of infection with positive cerebrospinal fluid (CSF) culture and/or Gram stain. Cerebrospinal fluid, blood, and clinical parameters and antimicrobial management were compared between the 2 groups. Mortality and Modified Rankin Scores were compared at 30 days post-EVD insertion. Results Internal EVD-related infection was suspected after 46 of 495 EVD insertions (9.3%), more common after an emergency insertion. Twenty-six of 46 were confirmed iERIs, mostly due to Staphylococci (16 of 26). When confirmed and suspected infections were compared, there were no differences in CSF white cell counts or glucose concentrations, nor peripheral blood white cell counts or C-reactive protein concentrations. The incidence of fever, meningism, and seizures was also similar, although altered consciousness was more common in people with confirmed iERI. Broad-spectrum antimicrobial usage was prevalent in both groups with no difference in median duration of therapy (10 days [interquartile range {IQR}, 7–24.5] for confirmed cases and 9.5 days [IQR, 5.75–14] for suspected, P = 0.3). Despite comparable baseline characteristics, suspected iERI was associated with lower mortality and better neurological outcomes. Conclusions Suspected iERI could represent sterile inflammation or lower bacterial load leading to false-negative cultures. There is a need for improved microbiology diagnostics and biomarkers of bacterial infection to permit accurate discrimination and improve antimicrobial stewardship.
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Affiliation(s)
- Sei Yon Sohn
- Division of Anaesthesia, University of Cambridge , Cambridge , U.K
| | - Clark D Russell
- University of Edinburgh Centre for Inflammation Research, Queen’s Medical Research Institute , Edinburgh , U.K
| | - Aimun AB Jamjoom
- Department of Clinical Neuroscience, Royal Infirmary of Edinburgh , Edinburgh , U.K
| | - Michael T Poon
- Department of Clinical Neuroscience, Royal Infirmary of Edinburgh , Edinburgh , U.K
| | - Aaron Lawson McLean
- Department of Neurosurgery, Jena University Hospital – Friedrich Schiller University Jena , Jena , Germany
| | - Aminul I Ahmed
- Wolfson CARD, King’s College London and Department of Neurosurgery, King’s College Hospital , London , U.K
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4
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Ramonet M, Ciais P, Apadula F, Bartyzel J, Bastos A, Bergamaschi P, Blanc PE, Brunner D, Caracciolo di Torchiarolo L, Calzolari F, Chen H, Chmura L, Colomb A, Conil S, Cristofanelli P, Cuevas E, Curcoll R, Delmotte M, di Sarra A, Emmenegger L, Forster G, Frumau A, Gerbig C, Gheusi F, Hammer S, Haszpra L, Hatakka J, Hazan L, Heliasz M, Henne S, Hensen A, Hermansen O, Keronen P, Kivi R, Komínková K, Kubistin D, Laurent O, Laurila T, Lavric JV, Lehner I, Lehtinen KEJ, Leskinen A, Leuenberger M, Levin I, Lindauer M, Lopez M, Myhre CL, Mammarella I, Manca G, Manning A, Marek MV, Marklund P, Martin D, Meinhardt F, Mihalopoulos N, Mölder M, Morgui JA, Necki J, O'Doherty S, O'Dowd C, Ottosson M, Philippon C, Piacentino S, Pichon JM, Plass-Duelmer C, Resovsky A, Rivier L, Rodó X, Sha MK, Scheeren HA, Sferlazzo D, Spain TG, Stanley KM, Steinbacher M, Trisolino P, Vermeulen A, Vítková G, Weyrauch D, Xueref-Remy I, Yala K, Yver Kwok C. The fingerprint of the summer 2018 drought in Europe on ground-based atmospheric CO 2 measurements. Philos Trans R Soc Lond B Biol Sci 2020; 375:20190513. [PMID: 32892733 DOI: 10.1098/rstb.2019.0513] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
During the summer of 2018, a widespread drought developed over Northern and Central Europe. The increase in temperature and the reduction of soil moisture have influenced carbon dioxide (CO2) exchange between the atmosphere and terrestrial ecosystems in various ways, such as a reduction of photosynthesis, changes in ecosystem respiration, or allowing more frequent fires. In this study, we characterize the resulting perturbation of the atmospheric CO2 seasonal cycles. 2018 has a good coverage of European regions affected by drought, allowing the investigation of how ecosystem flux anomalies impacted spatial CO2 gradients between stations. This density of stations is unprecedented compared to previous drought events in 2003 and 2015, particularly thanks to the deployment of the Integrated Carbon Observation System (ICOS) network of atmospheric greenhouse gas monitoring stations in recent years. Seasonal CO2 cycles from 48 European stations were available for 2017 and 2018. Earlier data were retrieved for comparison from international databases or national networks. Here, we show that the usual summer minimum in CO2 due to the surface carbon uptake was reduced by 1.4 ppm in 2018 for the 10 stations located in the area most affected by the temperature anomaly, mostly in Northern Europe. Notwithstanding, the CO2 transition phases before and after July were slower in 2018 compared to 2017, suggesting an extension of the growing season, with either continued CO2 uptake by photosynthesis and/or a reduction in respiration driven by the depletion of substrate for respiration inherited from the previous months due to the drought. For stations with sufficiently long time series, the CO2 anomaly observed in 2018 was compared to previous European droughts in 2003 and 2015. Considering the areas most affected by the temperature anomalies, we found a higher CO2 anomaly in 2003 (+3 ppm averaged over 4 sites), and a smaller anomaly in 2015 (+1 ppm averaged over 11 sites) compared to 2018. This article is part of the theme issue 'Impacts of the 2018 severe drought and heatwave in Europe: from site to continental scale'.
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Affiliation(s)
- M Ramonet
- Université Paris-Saclay, CEA, CNRS, UVSQ, Laboratoire des Sciences du Climat et de l'Environnement (LSCE/IPSL), Gif-sur-Yvette, France
| | - P Ciais
- Université Paris-Saclay, CEA, CNRS, UVSQ, Laboratoire des Sciences du Climat et de l'Environnement (LSCE/IPSL), Gif-sur-Yvette, France
| | - F Apadula
- Ricerca sul Sistema Energetico, Milan, Italy
| | - J Bartyzel
- AGH University of Science and Technology, 30059 Krakow, Poland
| | - A Bastos
- Department of Geography, Ludwig-Maximilians University, 80333 Munich, Germany
| | - P Bergamaschi
- European Commission, Joint Research Centre, Ispra, Italy
| | - P E Blanc
- Aix Marseille Univ, Avignon Université, CNRS, IRD, Institut Méditerranéen de Biodiversité et d'Ecologie marine et continentale (IMBE), Marseille, France
| | - D Brunner
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Duebendorf, Switzerland
| | | | - F Calzolari
- National Research Council, Institute of Atmospheric Sciences and Climate, Bologna, Italy
| | - H Chen
- Centre for Isotope Research (CIO), University of Groningen, Nijenborgh 6, 9747 AG Groningen, The Netherlands
| | - L Chmura
- AGH University of Science and Technology, 30059 Krakow, Poland
| | - A Colomb
- Université Clermont Auvergne, CNRS, Laboratoire de Météorologie Physique, UMR 6016, Clermont-Ferrand, France
| | - S Conil
- DRD/OPE, Andra, Bure, France
| | - P Cristofanelli
- National Research Council, Institute of Atmospheric Sciences and Climate, Bologna, Italy
| | - E Cuevas
- Izana Atmospheric Research Center, Meteorological State Agency of Spain, Tenerife, Spain
| | - R Curcoll
- Institut de Ciencia i Tecnologia Ambientals, Universitat Autonoma de Barcelona, Barcelona, Spain
| | - M Delmotte
- Université Paris-Saclay, CEA, CNRS, UVSQ, Laboratoire des Sciences du Climat et de l'Environnement (LSCE/IPSL), Gif-sur-Yvette, France
| | - A di Sarra
- Agenzia Nazionale per le Nuove Tecnologie, l'Energia e lo Sviluppo Economico Sostenibile, Rome, Italy
| | - L Emmenegger
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Duebendorf, Switzerland
| | - G Forster
- National Centre for Atmospheric Science, University of East Anglia, Norwich, UK
| | - A Frumau
- Netherlands Organisation for Applied Scientific Research, Petten, The Netherlands
| | - C Gerbig
- Max Planck Institute for Biogeochemistry, Jena, Germany
| | - F Gheusi
- Laboratoire d'Aérologie, UPS Université Toulouse 3, CNRS (UMR5560), Toulouse, France
| | - S Hammer
- University of Heidelberg, Institut fuer Umweltphysik, Heidelberg, Germany
| | - L Haszpra
- Research Centre for Astronomy and Earth Sciences, Sopron, Hungary
| | - J Hatakka
- Finnish Meteorological Institute, Helsinki, Finland
| | - L Hazan
- Université Paris-Saclay, CEA, CNRS, UVSQ, Laboratoire des Sciences du Climat et de l'Environnement (LSCE/IPSL), Gif-sur-Yvette, France
| | - M Heliasz
- Centre for Environmental and Climate Research, Lund University, Lund, Sweden
| | - S Henne
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Duebendorf, Switzerland
| | - A Hensen
- Netherlands Organisation for Applied Scientific Research, Petten, The Netherlands
| | - O Hermansen
- NILU - Norwegian Institute for Air Research, Oslo, Norway
| | - P Keronen
- Institute for Atmospheric and Earth System Research (INAR), University of Helsinki, Helsinki, Finland
| | - R Kivi
- Finnish Meteorological Institute, Helsinki, Finland
| | - K Komínková
- Global Change Research Institute of the Czech Academy of Sciences, Brno, Czech Republic
| | - D Kubistin
- Deutscher Wetterdienst, Hohenpeißenberg Meteorological Observatory, Hohenpeißenberg, Germany
| | - O Laurent
- Université Paris-Saclay, CEA, CNRS, UVSQ, Laboratoire des Sciences du Climat et de l'Environnement (LSCE/IPSL), Gif-sur-Yvette, France
| | - T Laurila
- Finnish Meteorological Institute, Helsinki, Finland
| | - J V Lavric
- Max Planck Institute for Biogeochemistry, Jena, Germany
| | - I Lehner
- Centre for Environmental and Climate Research, Lund University, Lund, Sweden
| | - K E J Lehtinen
- Finnish Meteorological Institute, Helsinki, Finland.,University of Eastern Finland, Kuopio, Finland
| | - A Leskinen
- Finnish Meteorological Institute, Helsinki, Finland.,University of Eastern Finland, Kuopio, Finland
| | - M Leuenberger
- University of Bern, Physics Institute, Climate and Environmental Physics Division and Oeschger Center for Climate Change Research, Bern, Switzerland
| | - I Levin
- University of Heidelberg, Institut fuer Umweltphysik, Heidelberg, Germany
| | - M Lindauer
- Deutscher Wetterdienst, Hohenpeißenberg Meteorological Observatory, Hohenpeißenberg, Germany
| | - M Lopez
- Université Paris-Saclay, CEA, CNRS, UVSQ, Laboratoire des Sciences du Climat et de l'Environnement (LSCE/IPSL), Gif-sur-Yvette, France
| | - C Lund Myhre
- NILU - Norwegian Institute for Air Research, Oslo, Norway
| | - I Mammarella
- Institute for Atmospheric and Earth System Research (INAR), University of Helsinki, Helsinki, Finland
| | - G Manca
- European Commission, Joint Research Centre, Ispra, Italy
| | - A Manning
- National Centre for Atmospheric Science, University of East Anglia, Norwich, UK
| | - M V Marek
- Global Change Research Institute of the Czech Academy of Sciences, Brno, Czech Republic
| | - P Marklund
- Swedish University of Agricultural Sciences, Unit for Field-based Forest Research, 92291 Vindeln, Sweden
| | - D Martin
- Environmental Protection Agency, Dublin, Ireland
| | | | - N Mihalopoulos
- Environmental Chemical Processes Laboratory, University of Crete, Greece
| | - M Mölder
- Department of Physical Geography and Ecosystem Science (INES), Lund University, Lund, Sweden
| | - J A Morgui
- Institut de Ciencia i Tecnologia Ambientals, Universitat Autonoma de Barcelona, Barcelona, Spain
| | - J Necki
- AGH University of Science and Technology, 30059 Krakow, Poland
| | - S O'Doherty
- Atmospheric Chemistry Research Group School of Chemistry, University of Bristol, Bristol, UK
| | - C O'Dowd
- National University of Ireland Galway, Galway, Ireland
| | - M Ottosson
- Swedish University of Agricultural Sciences, Unit for Field-based Forest Research, 92291 Vindeln, Sweden
| | - C Philippon
- Université Paris-Saclay, CEA, CNRS, UVSQ, Laboratoire des Sciences du Climat et de l'Environnement (LSCE/IPSL), Gif-sur-Yvette, France
| | - S Piacentino
- Agenzia Nazionale per le Nuove Tecnologie, l'Energia e lo Sviluppo Economico Sostenibile, Rome, Italy
| | - J M Pichon
- Université Clermont Auvergne, CNRS, Laboratoire de Météorologie Physique, UMR 6016, Clermont-Ferrand, France
| | - C Plass-Duelmer
- Deutscher Wetterdienst, Hohenpeißenberg Meteorological Observatory, Hohenpeißenberg, Germany
| | - A Resovsky
- Université Paris-Saclay, CEA, CNRS, UVSQ, Laboratoire des Sciences du Climat et de l'Environnement (LSCE/IPSL), Gif-sur-Yvette, France
| | - L Rivier
- Université Paris-Saclay, CEA, CNRS, UVSQ, Laboratoire des Sciences du Climat et de l'Environnement (LSCE/IPSL), Gif-sur-Yvette, France
| | - X Rodó
- Climate and Health Programme (CLIMA), Barcelona Institute for Global Health (ISGLOBAL), Barcelona, Spain.,Institució Catalana de Recerca i Estudis Avancats (ICREA), Barcelona, Spain
| | - M K Sha
- Royal Belgian Institute for Space Aeronomy (BIRA-IASB), Brussels, Belgium
| | - H A Scheeren
- Centre for Isotope Research (CIO), University of Groningen, Nijenborgh 6, 9747 AG Groningen, The Netherlands
| | - D Sferlazzo
- Agenzia Nazionale per le Nuove Tecnologie, l'Energia e lo Sviluppo Economico Sostenibile, Rome, Italy
| | - T G Spain
- National University of Ireland Galway, Galway, Ireland
| | - K M Stanley
- Atmospheric Chemistry Research Group School of Chemistry, University of Bristol, Bristol, UK.,Institute for Atmospheric and Environmental Sciences, Goethe University Frankfurt, Frankfurt am Main, Germany
| | - M Steinbacher
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Duebendorf, Switzerland
| | - P Trisolino
- National Research Council, Institute of Atmospheric Sciences and Climate, Bologna, Italy
| | | | - G Vítková
- Global Change Research Institute of the Czech Academy of Sciences, Brno, Czech Republic
| | - D Weyrauch
- Deutscher Wetterdienst, Hohenpeißenberg Meteorological Observatory, Hohenpeißenberg, Germany
| | - I Xueref-Remy
- Aix Marseille Univ, Avignon Université, CNRS, IRD, Institut Méditerranéen de Biodiversité et d'Ecologie marine et continentale (IMBE), Marseille, France
| | - K Yala
- Université Paris-Saclay, CEA, CNRS, UVSQ, Laboratoire des Sciences du Climat et de l'Environnement (LSCE/IPSL), Gif-sur-Yvette, France
| | - C Yver Kwok
- Université Paris-Saclay, CEA, CNRS, UVSQ, Laboratoire des Sciences du Climat et de l'Environnement (LSCE/IPSL), Gif-sur-Yvette, France
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5
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Manning A, Harrison T, Blozis S, Dionne-Vahalik M, Mead S. URINARY INCONTINENCE AND THE EMERGENCE OF QUALITY IN TEXAS NURSING FACILITIES. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.2687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
| | | | - S Blozis
- Department of Psychology University of California, Davis
| | | | - S Mead
- Medicaid and CHIP Services
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Joyce DP, Manning A, Carter M, Hill ADK, Kell MR, Barry M. Meta-analysis to determine the clinical impact of axillary lymph node dissection in the treatment of invasive breast cancer. Breast Cancer Res Treat 2015; 153:235-40. [DOI: 10.1007/s10549-015-3549-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2015] [Accepted: 08/12/2015] [Indexed: 10/23/2022]
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8
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Block G, Bell* G, Pickthorn K, Huang S, Martin K, Tentori F, Bieber B, Morgenstern H, Jacobson S, Andreucci V, Fukagawa M, Mendelssohn D, Pisoni R, Robinson B, De Schutter T, Neven E, Behets G, Peter M, Steppan S, Passlick-Deetjen J, D'haese P, Senatore F, Manning A, Nakajima S, Ushirogawa Y, Tsuda K, Egawa H, Lucisano G, Seiler S, Ege P, Romero de Vorsmann F, Klingele M, Lerner-Graber AK, Fliser D, Heine GH, Molony D, Bellasi A, Bellizzi V, Russo D, DI Iorio B. Bone and mineral diseases - 2. Nephrol Dial Transplant 2012. [DOI: 10.1093/ndt/gfs202] [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: 11/14/2022] Open
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Manning A. Mirena(R) removal from a nulliparous woman. Journal of Family Planning and Reproductive Health Care 2011; 37:191; discussion 192. [DOI: 10.1136/jfprhc-2011-0115] [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: 11/04/2022]
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Manning A, Wood J, Cunningham R, McIntyre S, Shorthouse D, Gordon I, Lindenmayer D. Integrating research and restoration: the establishment of a long-term woodland experiment in south-eastern Australia. ACTA ACUST UNITED AC 2011. [DOI: 10.7882/az.2011.016] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Dreier J, Major S, Woitzik J, Manning A, Drenckhahn C, Tolias C, Steinbrink J, Dirnagl U, Bohner G, Strong A. 52. Cortical spreading depression of vascular low-frequency fluctuations in patients with subarachnoid haemorrhage. Clin Neurophysiol 2009. [DOI: 10.1016/j.clinph.2008.07.052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Ferguson R, van Dreumel T, Keystone JS, Manning A, Malatestinic A, Caswell JL, Peregrine AS. Unsuccessful treatment of a horse with mandibular granulomatous osteomyelitis due to Halicephalobus gingivalis. Can Vet J 2008; 49:1099-1103. [PMID: 19183732 PMCID: PMC2572094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
An 8-year-old horse was presented with a submandibular swelling. Biopsy of the lesion indicated granulomatous osteomyelitis due to Halicephalobus gingivalis. In the absence of evidence of involvement of the central nervous system at the time of diagnosis, the horse was treated with ivermectin. Unfortunately, the horse did not survive.
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Dreier J, Major S, Manning A, Woitzik J, Drenckhahn C, Steinbrink J, Vajkoczy P, Lauritzen M, Dirnagl U, Bohner G, Strong A. Normale und inverse neurovaskuläre Kopplung und Suppression der niederfrequenten vaskulären Fluktuationen während Cortical Spreading Depolarisations im menschlichen Hirn. Akt Neurol 2008. [DOI: 10.1055/s-0028-1086584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Dreier JP, Major S, Woitzik J, Manning A, Drenckhahn C, Tolias C, Steinbrink J, Dirnagl U, Bohner G, Strong AJ. Cortical spreading depression of vascular low-frequency fluctuations in patients with Subarachnoid Haemorrhage. KLIN NEUROPHYSIOL 2008. [DOI: 10.1055/s-2008-1072846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Manning A, Russell V, Eastick K, Leadbetter GH, Hallam N, Templeton K, Simmonds P. Epidemiological profile and clinical associations of human bocavirus and other human parvoviruses. J Infect Dis 2006; 194:1283-90. [PMID: 17041855 PMCID: PMC7199845 DOI: 10.1086/508219] [Citation(s) in RCA: 201] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2006] [Accepted: 07/14/2006] [Indexed: 12/19/2022] Open
Abstract
BackgroundHuman bocavirus (HBoV) and PARV4 are newly discovered human parvoviruses. HBoV, which was first detected in respiratory samples, has a potential role in the development of human respiratory disease. The present study compared the frequencies, epidemiological profiles, and clinical backgrounds of HBoV and PARV4 infections with those of other respiratory virus infections, by evaluating diagnostic samples referred to the Specialist Virology Laboratory (SVL) at the Royal Infirmary of Edinburgh (Edinburgh, United Kingdom) MethodsAnonymized samples and study subject information were obtained from the respiratory sample archive of the SVL. Samples were screened for HBoV, PARV4, B19, respiratory syncytial virus (RSV), adenoviruses, influenza viruses, and parainfluenza viruses by use of nested polymerase chain reaction ResultsHBoV infection was detected in 47 (8.2%) of 574 study subjects,&ranking third in prevalence behind RSV infection (15.7%) and adenovirus infection (10.3%). Peak incidences of HBoV were noted among infants and young children (age, 6–24 months) during the midwinter months (December and January) and were specifically associated with lower respiratory tract infections. HBoV infections were frequently accompanied by other respiratory viruses (frequency, 43%), and they were more prevalent among individuals infected with other respiratory viruses (17%), frequently adenovirus or RSV. All respiratory samples were negative for PARV4 ConclusionsIn the present study, HBoV was a frequently detected, potential respiratory pathogen, with a prevalence and an epidemiological profile comparable to those of RSV. Identification of HBoV infections may be clinically important in the future
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Affiliation(s)
- A. Manning
- Centre for Infectious Diseases, University of Edinburgh, Summerhall, and
- Reprints or correspondence: Dr. Peter Simmonds, Centre for Infectious Diseases, University of Edinburgh, Summerhall, Edinburgh, EH9 IQH, UK ()
| | - V. Russell
- Centre for Infectious Diseases, University of Edinburgh, Summerhall, and
| | - K. Eastick
- Specialist Virology Laboratory, Royal Infirmary of Edinburgh, Edinburgh, United Kingdom
| | - G. H. Leadbetter
- Specialist Virology Laboratory, Royal Infirmary of Edinburgh, Edinburgh, United Kingdom
| | - N. Hallam
- Specialist Virology Laboratory, Royal Infirmary of Edinburgh, Edinburgh, United Kingdom
| | - K. Templeton
- Specialist Virology Laboratory, Royal Infirmary of Edinburgh, Edinburgh, United Kingdom
| | - P. Simmonds
- Centre for Infectious Diseases, University of Edinburgh, Summerhall, and
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Douady S, Manning A, Hersen P, Elbelrhiti H, Protière S, Daerr A, Kabbachi B. Song of the dunes as a self-synchronized instrument. Phys Rev Lett 2006; 97:018002. [PMID: 16907409 DOI: 10.1103/physrevlett.97.018002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2005] [Indexed: 05/11/2023]
Abstract
Since Marco Polo it has been known that some sand dunes have the peculiar ability to emit a loud sound with a well-defined frequency, sometimes for several minutes. The origin of this sustained sound has remained mysterious, partly because of its rarity in nature. It has been recognized that the sound is not due to the air flow around the dunes but to the motion of an avalanche, and not to an acoustic excitation of the grains but to their relative motion. By comparing singing dunes around the world and two controlled experiments, in the laboratory and the field, we prove that the frequency of the sound is the frequency of the relative motion of the sand grains. Sound is produced because moving grains synchronize their motions. The laboratory experiment shows that the dune is not needed for sound emission. A velocity threshold for sound emission is found in both experiments, and an interpretation is proposed.
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Affiliation(s)
- S Douady
- Matière et Systèmes Complexes, CNRS & Université Paris 7, CC7057, Jussieu, 75005 Paris, France
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Bollinger M, Boldt A, Mudd K, Manning A, Hsu V, Tsoukleris M, Butz A. Prescription Fill Patterns in Underserved Children with Asthma. J Allergy Clin Immunol 2006. [DOI: 10.1016/j.jaci.2005.12.1049] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Templeton K, Manning A, Russell V, Eastick K, Leadbetter G, Hallam N, Simmonds P. Epidemiology and potential clinical associations of human bocavirus. J Clin Virol 2006. [DOI: 10.1016/s1386-6532(06)80739-0] [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: 12/01/2022]
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O'Doherty S, Cunnold DM, Manning A, Miller BR, Wang RHJ, Krummel PB, Fraser PJ, Simmonds PG, McCulloch A, Weiss RF, Salameh P, Porter LW, Prinn RG, Huang J, Sturrock G, Ryall D, Derwent RG, Montzka SA. Rapid growth of hydrofluorocarbon 134a and hydrochlorofluorocarbons 141b, 142b, and 22 from Advanced Global Atmospheric Gases Experiment (AGAGE) observations at Cape Grim, Tasmania, and Mace Head, Ireland. ACTA ACUST UNITED AC 2004. [DOI: 10.1029/2003jd004277] [Citation(s) in RCA: 89] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- S. O'Doherty
- School of Chemistry; University of Bristol; Bristol UK
| | - D. M. Cunnold
- School of Earth and Atmospheric Sciences; Georgia Institute of Technology; Atlanta Georgia USA
| | - A. Manning
- Climate Research; UK Met Office; Bracknell UK
| | - B. R. Miller
- Scripps Institution of Oceanography; University of California, San Diego; La Jolla California USA
| | - R. H. J. Wang
- School of Earth and Atmospheric Sciences; Georgia Institute of Technology; Atlanta Georgia USA
| | - P. B. Krummel
- Atmospheric Research; Commonwealth Scientific and Industrial Research Organisation; Aspendale Victoria Australia
| | - P. J. Fraser
- Atmospheric Research; Commonwealth Scientific and Industrial Research Organisation; Aspendale Victoria Australia
| | | | - A. McCulloch
- School of Chemistry; University of Bristol; Bristol UK
| | - R. F. Weiss
- Scripps Institution of Oceanography; University of California, San Diego; La Jolla California USA
| | - P. Salameh
- Scripps Institution of Oceanography; University of California, San Diego; La Jolla California USA
| | - L. W. Porter
- Cape Grim Baseline Air Pollution Station; Bureau of Meteorology; Smithton Tasmania Australia
| | - R. G. Prinn
- Department of Earth, Atmospheric and Planetary Sciences; Massachusetts Institute of Technology; Cambridge Massachusetts USA
| | - J. Huang
- Department of Earth, Atmospheric and Planetary Sciences; Massachusetts Institute of Technology; Cambridge Massachusetts USA
| | - G. Sturrock
- Climate Research; UK Met Office; Bracknell UK
| | - D. Ryall
- Climate Research; UK Met Office; Bracknell UK
| | | | - S. A. Montzka
- Climate Monitoring and Diagnostics Laboratory; National Oceanic and Atmospheric Administration; Boulder Colorado USA
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Galmarini S, Bianconi R, Klug W, Mikkelsen T, Addis R, Andronopoulos S, Astrup P, Baklanov A, Bartniki J, Bartzis JC, Bellasio R, Bompay F, Buckley R, Bouzom M, Champion H, D'Amours R, Davakis E, Eleveld H, Geertsema GT, Glaab H, Kollax M, Ilvonen M, Manning A, Pechinger U, Persson C, Polreich E, Potemski S, Prodanova M, Saltbones J, Slaper H, Sofiev MA, Syrakov D, Sørensen JH, Van der Auwera L, Valkama I, Zelazny R. Can the confidence in long range atmospheric transport models be increased? The pan-european experience of ensemble. Radiat Prot Dosimetry 2004; 109:19-24. [PMID: 15238650 DOI: 10.1093/rpd/nch261] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Is atmospheric dispersion forecasting an important asset of the early-phase nuclear emergency response management? Is there a 'perfect atmospheric dispersion model'? Is there a way to make the results of dispersion models more reliable and trustworthy? While seeking to answer these questions the multi-model ensemble dispersion forecast system ENSEMBLE will be presented.
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Affiliation(s)
- S Galmarini
- IES/REM, Joint Research Center, TP 321 21020 Ispra, Italy.
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Abstract
Upper gastrointestinal examinations were performed in 11 unsedated ferrets and 4 ferrets sedated with ketamine and diazepam. Each animal received a 8-13 mL/kg body weight dosage of barium liquid (30% weight:volume). Radiographs were made immediately and at 5, 10, 20, 40, 60, 90, 120 and 150 min (mins) after the barium was administered. Gastric emptying began immediately. Mean total gastric emptying was longer in sedated ferrets (130 +/- 40 min versus 75 +/- 54 min); however, this difference was not statistically significant (p = 0.18). Small intestinal transit time was less than 2 h in all ferrets. The barium-filled small bowel was best visualized on the 20- and 40-min radiographs and did not exceed 5-7 mm in width. Flocculation of barium in the small intestine and adherence of barium to the stomach mucosa was seen in almost all animals. The longitudinal colonic mucosal folds in the colon were well visualized in the normal upper gastrointestinal study and aided in distinguishing small intestine from large intestine. The use of ketamine and diazepam sedation did not significantly affect the parameters evaluated in the upper gastrointestinal study series.
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Affiliation(s)
- Leslie A Schwarz
- Department of Clinical Sciences, Section of Radiology, Foster Hospital for Small Animals, Tufts University School of Veterinary Medicine, North Grafton, MA 01536, USA
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Whitmore R, Alexander M, Bardhan KD, Manning A, Gardner G. Referral of Dr Peter Mansfield to the GMC. West J Med 2001. [DOI: 10.1136/bmj.323.7324.1304] [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: 11/04/2022]
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Manning A. Referral of Dr. Peter Mansfield to the GMC. Should decision on vaccination be best for you or us? BMJ 2001; 323:1304. [PMID: 11764751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
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Khittoo G, Manning A, Mustun H, Appadoo J, Venkatasamy S, Fagoonee I, Ghadirian P, Tonin PN. Mutation Analysis of a Mauritian Hereditary Breast Cancer Family Reveals the BRCA2 6503delTT Mutation Previously Found to Recur in Different Ethnic Populations. Hum Hered 2001; 52:55-8. [PMID: 11359068 DOI: 10.1159/000053354] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Mauritius, a small island some 855 km off the east coast of Madagascar, has a multiethnic population of about 1.2 million with a high population density of about 611 per km(2). The recent industrialization of the island seems to have been accompanied, in less than 10 years, by an increase of at least 30% in breast cancer incidence. We have detected the BRCA2 6503delTT mutation in two sisters of the same family of Indian origin but living in Mauritius for at least five generations. This mutation has been found to recur in geographically diverse populations and haplotype analysis has shown a common ancestry. The haplotype of the mutation found in the Mauritian family differs from that found in other populations harbouring the same mutation, suggesting that the BRCA2 6503delTT mutation most likely arose independently.
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Affiliation(s)
- G Khittoo
- Faculty of Science, University of Mauritius, Reduit, Mauritius.
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Aupperle K, Bennett B, Han Z, Boyle D, Manning A, Firestein G. NF-kappa B regulation by I kappa B kinase-2 in rheumatoid arthritis synoviocytes. J Immunol 2001; 166:2705-11. [PMID: 11160335 DOI: 10.4049/jimmunol.166.4.2705] [Citation(s) in RCA: 106] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
IkappaB kinase-1 and IkappaB kinase-2 (IKK1 and IKK2; also called IKKalpha and IKKbeta, respectively) are part of the signal complex that regulates NF-kappaB activity in many cell types, including fibroblast-like synoviocytes (FLS). We determined which of these two kinases is responsible for cytokine-induced NF-kappaB activation in synoviocytes and assessed the functional consequences of IKK1 or IKK2 overexpression and inhibition. FLS were infected with adenovirus constructs encoding either wild-type (wt) IKK1 or IKK2, the dominant negative (dn) mutant of both kinases, or a control construct encoding green fluorescence protein. Analysis of the NF-kappaB pathway revealed that cytokine-induced IKK activation, IkappaB degradation, and NF-kappaB activation was prevented in cells expressing the IKK2 dn mutant, whereas baseline NF-kappaB activity was increased by IKK2 wt. In addition, synthesis of IL-6 and IL-8, as well as expression of ICAM-1 and collagenase, was only increased by IKK2 wt, and their cytokine-induced production was abrogated by IKK2 dn mutant. However, the IKK1 dn mutant did not inhibit cytokine-mediated activation of NF-kappaB or any of the functional assays. These data indicate that IKK2 is the key convergence pathway for cytokine-induced NF-kappaB activation. Furthermore, IKK2 regulates adhesion molecule, matrix metalloproteinase, and cytokine production in FLS.
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Affiliation(s)
- K Aupperle
- Division of Rheumatology, Allergy and Immunology, University of California San Diego School of Medicine, La Jolla, CA, USA
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Chan A, McAbee G, Queenan J, Manning A. Ganglioneurocytoma mimicking a malignant tumor: case report with a literature review of the MRI appearance of neurocytomas and gangliogliomas. J Neuroimaging 2001; 11:47-50. [PMID: 11198527 DOI: 10.1111/j.1552-6569.2001.tb00009.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
A 14-year-old girl presented with symptoms of increased intracranial pressure after her head was squeezed at a party. MRI demonstrated a mass that was hypointense to brain on T1WI and heterogeneous in signal on PD and T2WI; compression of the ventricle, midline shift, and mild ventriculomegaly also were present. Contrast enhancement was extensive and heterogeneous, mimicking a malignant tumor. Neuropathology revealed a ganglioneurocytoma.
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Affiliation(s)
- A Chan
- Department of Pediatrics (Neurology), School of Osteopathic Medicine, University of Medicine & Dentistry of New Jersey, 40 E. Laurel Rd, Suite 100, Stratford, NJ 08084, USA
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Manning A. HIV/AIDS programmes should focus on improved access. BMJ 2000; 321:963. [PMID: 11202957 PMCID: PMC1118754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
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Wilson SJ, Leone BA, Anderson D, Manning A, Holgate ST. Immunohistochemical analysis of the activation of NF-kappaB and expression of associated cytokines and adhesion molecules in human models of allergic inflammation. J Pathol 1999; 189:265-72. [PMID: 10547585 DOI: 10.1002/(sici)1096-9896(199910)189:2<265::aid-path415>3.0.co;2-#] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
To investigate the role of NF-kappaB in regulating allergic inflammation, a monoclonal antibody directed to the activated form of NF-kappaB has been developed and immunohistochemistry has been employed to study the pro-inflammatory transcriptive function of NF-kappaB and the adhesion molecules and cytokines that it regulates. Human umbilical vein endothelial cells (HUVECs) exposed to physiological levels of TNFalpha demonstrated dose- and time-dependent cytoplasmic and nuclear activation of NF-kappaB, followed by up-regulation of ICAM-1. This was suppressed by the selective inhibitors of NF-kappaB activation, calpain and gliotoxin. Using monoclonal antibodies directed to NF-kappaB and associated cytokines and adhesion molecules, immunohistochemistry was applied to bronchial explants stimulated ex vivo with TNFalpha, and to nasal polyp tissue, embedded in glycol methacrylate. Stimulation of the bronchial explants increased expression of NF-kappaB, IL-8, and GM-CSF in the epithelium and endothelium and ICAM-1 in the endothelium. In nasal polyp, expression of NF-kappaB was in the epithelium, the endothelium and in submucosal mast cells, eosinophils, T and B lymphocytes, and macrophages. Thus, immunohistochemistry can be used to determine the cellular provenance of NF-kappaB and its activation status in single cell and complex tissue systems, in parallel with appropriate inflammatory markers.
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Affiliation(s)
- S J Wilson
- University Medicine, University of Southampton, U.K.
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Abstract
Brain magnetic resonance imaging of an 11-year-old male with Tourette syndrome demonstrated multicystic changes predominately in the gyrus rectus of the left frontal lobe. Other brain regions, including the basal ganglia, were normal. He did not have any symptoms of the comorbid conditions associated with Tourette syndrome, such as attention-deficit disorder or obsessive-compulsive disorder. The possible neurobiologic connection between Tourette syndrome and the gyrus rectus and its interconnecting pathways is discussed.
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Affiliation(s)
- G N McAbee
- Department of Pediatrics (Neurology), University of Medicine and Dentistry of New Jersey, Children's Regional Hospital at Cooper Hospital/University Medical Center, Camden 08103, USA
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Agrawal S, Zhang X, Cai Q, Kandimalla ER, Manning A, Jiang Z, Marcel T, Zhang R. Effect of aspirin on protein binding and tissue disposition of oligonucleotide phosphorothioate in rats. J Drug Target 1998; 5:303-12. [PMID: 9713979 DOI: 10.3109/10611869808995883] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Pharmacokinetic studies of phosphorothioate oligodeoxynucleotides (PS-oligonucleotides) in animals show that following intravenous administration, PS-oligonucleotide clears out rapidly from the plasma and is distributed to majority of the organs. PS-oligonucleotides are bound to plasma proteins extensively. This study was aimed to determine the effect of aspirin, a commonly used drug, on pharmacokinetics of PS-oligonucleotides. In the present study, PS-oligonucleotide was administered to rats that had received aspirin by gavage. Pharmacokinetic study shows that if PS-oligonucleotide was administered following aspirin administration in rats, a) plasma pharmacokinetic parameters (t1/2alpha?, t1/2beta, AUC, etc.) had lower values, b) tissue disposition was different, and c) rate and route of elimination was affected in animals compared to rats receiving PS-oligonucleotide alone. This finding suggests that pharmacokinetics of PS-oligonucleotides can be affected with certain class of drugs, which may have direct impact on biological activity and safety.
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Affiliation(s)
- S Agrawal
- Hybridon, Inc., Cambridge, MA 02139, USA
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Mercurio F, Zhu H, Murray BW, Shevchenko A, Bennett BL, Li J, Young DB, Barbosa M, Mann M, Manning A, Rao A. IKK-1 and IKK-2: cytokine-activated IkappaB kinases essential for NF-kappaB activation. Science 1997; 278:860-6. [PMID: 9346484 DOI: 10.1126/science.278.5339.860] [Citation(s) in RCA: 1650] [Impact Index Per Article: 61.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Activation of the transcription factor nuclear factor kappa B (NF-kappaB) is controlled by sequential phosphorylation, ubiquitination, and degradation of its inhibitory subunit IkappaB. A large multiprotein complex, the IkappaB kinase (IKK) signalsome, was purified from HeLa cells and found to contain a cytokine-inducible IkappaB kinase activity that phosphorylates IkappaB-alpha and IkappaB-beta. Two components of the IKK signalsome, IKK-1 and IKK-2, were identified as closely related protein serine kinases containing leucine zipper and helix-loop-helix protein interaction motifs. Mutant versions of IKK-2 had pronounced effects on RelA nuclear translocation and NF-kappaB-dependent reporter activity, consistent with a critical role for the IKK kinases in the NF-kappaB signaling pathway.
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Affiliation(s)
- F Mercurio
- Signal Pharmaceuticals, Inc., 5555 Oberlin Drive, San Diego, CA 92121, USA.
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Kandimalla ER, Manning A, Zhao Q, Shaw DR, Byrn RA, Sasisekharan V, Agrawal S. Mixed backbone antisense oligonucleotides: design, biochemical and biological properties of oligonucleotides containing 2'-5'-ribo- and 3'-5'-deoxyribonucleotide segments. Nucleic Acids Res 1997; 25:370-8. [PMID: 9016567 PMCID: PMC146429 DOI: 10.1093/nar/25.2.370] [Citation(s) in RCA: 49] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
We have designed and synthesized mixed backbone oligonucleotides (MBOs) containing 2'-5'-ribo- and 3'-5'-deoxyribonucleotide segments. Thermal melting studies of the phosphodiester MBOs (three 2'-5'linkages at each end) with the complementary 3'-5'-DNA and -RNA target strands suggest that 2'-5'-ribonucleoside incorporation into 3'-5'-oligodeoxyribonucleotides reduces binding to the target strands compared with an all 3'-5'-oligodeoxyribonucleotide of the same sequence and length. Increasing the number of 2'-5'linkages (from six to nine) further reduces binding to the DNA target strand more than the RNA target strand [Kandimalla,E.R. and Agrawal,S. (1996)Nucleic Acids Symp. Ser., 35, 125-126]. Phosphorothioate (PS) analogs of MBOs destabilize the duplex with the DNA target strand more than the duplex with the RNA target strand. Circular dichroism studies indicate that the duplexes of MBOs with the DNA and RNA target strands have spectral characteristics of both A- and B-type conformations. Compared with the control oligonucleotide, MBOs exhibit moderately higher stability against snake venom phosphodiesterase, S1 nuclease and in fetal calf serum. Although 2'-5'modification does not evoke RNase H activity, this modification does not effect the RNase H activation property of the 3'-5'-deoxyribonucleotide segment adjacent to the modification. In vitro studies with MBOs suggest that they have lesser effects on cell proliferation, clotting prolongation and hemolytic complement lysis than do control PS oligodeoxyribonucleotides. PS analogs of MBOs show HIV-1 inhibition comparable with that of a control PS oligodeoxyribonucleotide with all 3'-5'linkages. The current results suggest that a limited number of 2'-5'linkages could be used in conjunction with PS oligonucleotides to further modulate the properties of antisense oligonucleotides as therapeutic agents.
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Affiliation(s)
- E R Kandimalla
- Hybridon Inc., One Innovation Drive, Worcester, MA 01605, USA
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Abstract
The selectin family of glycoproteins facilitates the early phase of polymorphonuclear leukocyte adhesion to the endothelial cell and, thus, may promote ischemic cell damage. To evaluate E-selectin in the pathogenesis of focal cerebral ischemia and reperfusion injury, we cloned rat E-selectin cDNA and measured the temporal profiles E-selectin mRNA (Northern blot) and protein (immunohistochemistry) during (1 h of ischemia) and after (up to 1 week) transient (2 h) middle cerebral artery (MCA) occlusion in the male Wistar rat. We also tested the effect on these rats of administration of CY-1503, an analog of sialyl Lewis(x) (SLe(x)), on ischemia cell damage. mRNA for E-selectin was first detected in the ischemic hemisphere at 2 h of reperfusion and persisted to 46 h of reperfusion. E-selectin (protein) was localized to microvessels within the ischemic lesion at 0 h of reperfusion and persisted to 70 h of reperfusion. Treatment of the ischemic animals with CY-1503 (50 mg/kg) (n = 8) significantly reduced infarct volume by 42% (p < 0.05) and significantly reduced myeloperoxidase immunoreactive cells in the ischemic lesion by 60% (p < 0.05). These findings provide the first direct evidence for the involvement of E-selectin in transient MCA occlusion in rats and suggest that the E-selectin may facilitate neutrophil adhesion and subsequent cerebral ischemic cell damage.
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Affiliation(s)
- R L Zhang
- Neurology Department, Henry Ford Health Sciences Center, Detroit, Michigan, USA
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Abstract
Oligodeoxyribonucleotides containing both Watson-Crick and Hoogsteen hydrogen bonding domains joined by a nucleotide loop (FTFOs) are studied for their binding affinity and specificity to the DNA and RNA single-stranded targets. Thermal denaturation studies reveal that FTFOs have high binding affinity for their targets than do antisense (duplex forming) and antigene (triplex forming) oligonucleotides, because of involvement of both the Watson-Crick and Hoogsteen domains in the interaction. Studies with FTFOs containing different sizes and sequences of loops show that 4-6 bases long loops are optimum for binding; loop sequence does not have a dramatic effect on binding. The FTFOs have greater sequence specificity than do antisense and antigene oligonucleotides because they read the target sequence twice. SI-, PI- and mung bean nuclease protection assays show that the DNA FTFO forms a stable triplex with the DNA target strand, but a weak or no triplex with the RNA target strand. Gel mobility shift assay is used to determine binding of FTFOs to DNA and RNA targets. The circular dichroism (CD) spectrum of the foldback triplex formed with the DNA target strand resembles the B-DNA spectrum, suggesting that the triplex has a B-type of conformation.
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Panés J, Perry MA, Anderson DC, Manning A, Leone B, Cepinskas G, Rosenbloom CL, Miyasaka M, Kvietys PR, Granger DN. Regional differences in constitutive and induced ICAM-1 expression in vivo. Am J Physiol 1995; 269:H1955-64. [PMID: 8594904 DOI: 10.1152/ajpheart.1995.269.6.h1955] [Citation(s) in RCA: 78] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
The aim of the present study was to characterize and compare the expression of intercellular adhesion molecule 1 (ICAM-1) on unstimulated and endotoxin-challenged endothelial cells in different tissues of the rat. ICAM-1 expression was measured using 125I-labeled anti-rat ICAM-1 monoclonal antibody (MAb) and an isotype-matched control MAb labeled with 131I (to correct for nonspecific accumulation of the binding MAb). Under baseline conditions, ICAM-1 MAb binding was observed in all organs. The binding of 125I-ICAM-1 MAb varied widely among organs, with the largest accumulation (per g tissue) in the lung, followed by heart (1/30th of lung activity), splanchnic organs (1/50th of lung activity), thymus (1/100th of lung activity), testes (1/300th of lung activity), and skeletal muscle (1/800th of lung activity). Endotoxin induced an increase in ICAM-1 MAb binding in all organs except the spleen. Endotoxin-induced upregulation of ICAM-1 was greatest in heart and skeletal muscle (5- to 10-fold), whereas the remaining organs exhibited a two- to fourfold increase in ICAM-1 expression. Maximal upregulation of ICAM-1 occurred at 9-12 h after endotoxin administration. A dose-dependent increase in ICAM-1 expression was elicited by 0.1-10 microgram/kg, with higher doses (up to 5 mg/kg) producing no further increment. Induction of ICAM-1 mRNA after endotoxin was observed in all tissues examined (lung, heart, intestine), peaked at 3 h, and then rapidly returned to control levels. These findings indicate that ICAM-1 is constitutively expressed on vascular endothelium in all organs of the rat and that there are significant regional differences in the magnitude and time course of endotoxin-induced ICAM-1 expression.
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Affiliation(s)
- J Panés
- Department of Physiology, Louisiana State University Medical Center, Shreveport 71130, USA
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Finance O, Manning A, Chatelain P. Effects of a new amiodarone-like agent, SR 33589, in comparison to amiodarone, D,L-sotalol, and lignocaine, on ischemia-induced ventricular arrhythmias in anesthetized pigs. J Cardiovasc Pharmacol 1995; 26:570-6. [PMID: 8569217 DOI: 10.1097/00005344-199510000-00010] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
We compared the ability of a new amiodarone-like agent, SR 33589, with that of amiodarone, D,L-sotalol, and lignocaine to reduce the incidence of ventricular fibrillation (VF) and associated arrhythmias caused by acute coronary artery occlusion in anesthetized pigs. Ischemia was induced by occlusion of the left coronary descending artery (LAD) for 30 min. Premature ventricular complexes (PVCs), ventricular tachycardia (VT), and ventricular fibrillation (VF) were recorded during coronary occlusion. SR 33589 (1.25, 2.50, and 5 mg/kg intravenously, i.v.) markedly reduced the occurrence of ventricular arrhythmias during ischemia. The incidence of VF was reduced from 90% in the control group to 30% (p < 0.05) with 1.25 mg/kg, to 10% (p < 0.001) with 2.50 mg/kg, and to 20% (p < 0.01) with 5 mg/kg. In addition, SR 33589, especially at the two higher doses, caused a sustained reduction in both the incidence of VT and the number of PVCs per minute. In comparison, amiodarone 10 and 20 mg/kg i.v. reduced the incidence of VF (40 and 50%, respectively), but these reductions never reached a level of statistical significance. The incidence of VT and the number of PVCs per minute were also decreased significantly by amiodarone. D,L-sotalol 3 mg/kg i.v. exerted significant anti-arrhythmic activity; the incidence of VF was reduced 20% (p < 0.01), and both the incidence of VT and number of PVC per minute were also reduced. In contrast, lignocaine given as a 2-mg/kg bolus followed by an infusion at 70 micrograms/kg/min had no antiarrhythmic or antifibrillatory activity in this preparation.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- O Finance
- Department of Pharmacology, Sanofi Research, Brussels, Belgium
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Kandimalla ER, Manning A, Lathan C, Byrn RA, Agrawal S. Design, biochemical, biophysical and biological properties of cooperative antisense oligonucleotides. Nucleic Acids Res 1995; 23:3578-84. [PMID: 7567472 PMCID: PMC307240 DOI: 10.1093/nar/23.17.3578] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Short oligonucleotides that can bind to adjacent sites on target mRNA sequences are designed and evaluated for their binding affinity and biological activity. Sequence-specific binding of short tandem oligonucleotides is compared with a full-length single oligonucleotide (21mer) that binds to the same target sequence. Two short oligonucleotides that bind without a base separation between their binding sites on the target bind cooperatively, while oligonucleotides that have a one or two base separation between the binding oligonucleotides do not. The binding affinity of the tandem oligonucleotides is improved by extending the ends of the two oligonucleotides with complementary sequences. These extended sequences form a duplex stem when both oligonucleotides bind to the target, resulting in a stable ternary complex. RNase H studies reveal that the cooperative oligonucleotides bind to the target RNA with sequence specificity. A short oligonucleotide (9mer) with one or two mismatches does not bind at the intended site, while longer oligonucleotides (21mers) with one or two mismatches still bind to the same site, as does a perfectly matched 21mer, and evoke RNase H activity. HIV-1 inhibition studies reveal an increase in activity of the cooperative oligonucleotide combinations as the length of the dimerization domain increases.
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Christophe B, Libon R, Cazaubon C, Nisato D, Manning A, Chatelain P. Effects of irbesartan (SR47436/BMS-186295) on angiotensin II-induced pressor responses in the pithed rat: potential mechanisms of action. Eur J Pharmacol 1995; 281:161-71. [PMID: 7589203 DOI: 10.1016/0014-2999(95)00237-f] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The effects of two new non-peptide angiotensin receptor antagonists, irbesartan (SR 47436/BMS-186295, (2-n-butyl-4-spirocyclopentane-1-[((2'-tetrazol-5-yl)bipheny l-4-yl)methyl]2 - imidazolin-5-one) and SR 47155A (2-n-butyl-4-spirocyclopentane-1-[((2'-carboxy)biphenyl-4-yl)methy l]2- imidazolin-5-one, trifluoroacetate), on angiotensin II-induced pressor responses were studied in the pithed rat in comparison to losartan, EXP 3174 and [Sar1,Val5,Ala8]angiotensin II. SR 47155A (1-10 mg/kg i.v.) and losartan (1-10 mg/kg i.v.) shifted dose dependently the dose-response curve of angiotensin II to the right without affecting the maximal response. SR 47436 (0.3-10 mg/kg i.v.), EXP 3174 (0.03-1 mg/kg i.v.) and [Sar1,Val5,Ala8]angiotensin II (0.03-1 mg/kg i.v.) induced, at least at high doses, a non-parallel shift to the right of the angiotensin II dose-response curve and this was associated with a reduction of the maximal response. During a 70 min period, the effect of [Sar1,Val5,Ala8]angiotensin II (1 mg/kg i.v.) on the angiotensin II (0.3 microgram/kg i.v.)-induced pressor response was shown to be reversible, the effect of SR 47155A (10 mg/kg i.v.) was partially reversible and the effect of SR 47436 (3 mg/kg i.v.), EXP 3174 (1 mg/kg i.v.) or losartan (6 mg/kg i.v.) was not reversed at the end of this 70 min period. Administration of SR 47155A (10 mg/kg i.v.) before SR 47436 (1-10 mg/kg i.v.) reversed the reduced angiotensin II-maximal response induced by SR 47436. Administration of SR 47436 (10 mg/kg i.v.) before SR 47155A (1-10 mg/kg i.v.) prevented the full development of the pressor response as observed in the absence of SR 47436. In the pithed rat, SR 47436 (30 mg/kg i.v.) and losartan (30 mg/kg i.v.) reduced the change in diastolic blood pressure induced by electrical stimulation of the spinal cord only at low stimulation rates. Taken together these results indicate that SR 47436, under in vivo conditions, is a potent non-peptide angiotensin receptor antagonist. The type of antagonism (partially insurmountable but selective) can be explained by different theoretical models which are discussed.
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Hodeige D, Heyndrickx JP, Chatelain P, Manning A. SR 33589, a new amiodarone-like antiarrhythmic agent: anti-adrenoceptor activity in anaesthetized and conscious dogs. Eur J Pharmacol 1995; 279:25-32. [PMID: 7556379 DOI: 10.1016/0014-2999(95)00130-d] [Citation(s) in RCA: 66] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
We have assessed the ability of amiodarone and the new amiodarone-like antiarrhythmic agent, SR 33589 (N,N-dibutyl-3-[4-((2-butyl-5-methylsulphonamido)benzofuran-3-yl-c arbonyl) phenoxy]propylamine), to inhibit the effects of adrenoceptor stimulation in anaesthetized and conscious dogs. In anaesthetized, atropinized dogs, adrenoceptor stimulation was achieved (i) by i.v. administration of adrenaline and measurement of increased blood pressure (ii) by i.v. administration of isoprenaline and measurement of increased heart rate and decreased blood pressure. In conscious dogs, adrenoceptor stimulation was achieved by i.v. administration of isoprenaline and measurement of increased heart rate. In anaesthetized, atropinized dogs, both amiodarone and SR 33589 inhibited to similar extents, alpha-adrenoceptor stimulation (as indicated by attenuation of adrenaline-induced increases in blood pressure). The beta 1-adrenoceptor inhibitory activity of SR 33589 (as demonstrated by blockade of isoprenaline-induced increases in heart rate) was significant, but less marked than amiodarone (heart rate elevation reduced by 39%, P < 0.001 with 10 mg/kg SR 33589 and by 52%, P < 0.01 with 10 mg/kg amiodarone). In contrast, its beta 2-adrenoceptor antagonistic activity (as demonstrated by blockade of isoprenaline-induced reduction in blood pressure) was more marked (mean blood pressure decrease reduced by 69%, P < 0.01 with 10 mg/kg SR 33589 and by 31%, P < 0.05 with 10 mg/kg amiodarone). In conscious dogs, both SR 33589 and amiodarone (12.5, 25 and 50 mg/kg p.o.) inhibited isoprenaline-induced increases in heart rate by approximately the same amount for varying durations depending on the dose.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- D Hodeige
- Department of Pharmacology, Sanofi Research Centre, Brussels, Belgium
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Manning A, Thisse V, Hodeige D, Richard J, Heyndrickx JP, Chatelain P. SR 33589, a new amiodarone-like antiarrhythmic agent: electrophysiological effects in anesthetized dogs. J Cardiovasc Pharmacol 1995; 25:252-61. [PMID: 7752650 DOI: 10.1097/00005344-199502000-00010] [Citation(s) in RCA: 60] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
We compared the electrophysiological effects of a new amiodarone-like agent, SR 33589, with those of amiodarone. Mongrel dogs were anesthetized with chloralose, and electrodes were implanted in right atrium and ventricle for electrical stimulation and regional ECG measurement. Sinus cycle length (CL), AH interval, Wenckebach CL (WCL), atrial, atrioventricular node, and ventricular effective refractory periods (AERP, AVNERP, VERP), and parameters calculated from surface ECG were measured. SR 33589 was administered intravenously (i.v.) at 1, 2.5, or 5 mg/kg followed 60 min later by a second similar dose. The same protocol was followed with amiodarone 5 mg/kg, which reduced heart rate (HR) by 19% (p < 0.05), increased WCL by 31% (p < 0.01), AH interval by 14% (p < 0.05) and AERP, AVNERP, and VERP by 13% (p < 0.05), 19% (p < 0.05), and 11% (p < 0.01) respectively. No effect was observed on HV or PQ intervals. A second administration of 5 mg/kg changed these indexes further. SR 33589 (2.5 mg/kg) reduced HR by 21% (p < 0.001), increased WCL by 44% (p < 0.001), AH interval by 24% (p < 0.01), and AERP, AVNERP, and VERP by 17% (p < 0.001), 63% (p < 0.01), and 15% (p < 0.01) respectively, with an 18% increase in PQ interval (p < 0.05) but no significant effect on HV interval. Higher doses (5 mg/kg) and/or administration of a second dose both resulted in greater changes. Both amiodarone and SR 33589 prolonged VERP more at longer CL than at shorter CL, but the degree of reduction at shorter CL was less with SR 33589 than with amiodarone. Results suggest that acute administration of SR 33589 results in electrophysiological actions similar to those produced by amiodarone.
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Affiliation(s)
- A Manning
- Department of Pharmacology, Sanofi Research Centre, Sanofi Pharma, Brussels, Belgium
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Barthélémy G, Chatelain P, Manning A. Fantofarone (SR 33557): cardiovascular actions in anesthetized dogs. Arch Int Pharmacodyn Ther 1994; 327:204-19. [PMID: 7979829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
We have compared the ability of a new calcium channel-blocking agent, fantofarone (SR 33557), to modify the cardiovascular function in anesthetized dogs, with that of nifedipine. Administration of fantofarone (50 micrograms/kg, i.v.) resulted in substantial changes in cardiac function, such that stroke volume was increased by 40% (p < 0.05) and left ventricular relaxation diminished by approximately 10% (p < 0.05), while heart rate was not significantly altered. Total peripheral resistance was simultaneously reduced by 40% (p < 0.05). Higher doses of fantofarone (100 and 500 micrograms/kg, i.v.) produced further modifications of cardiovascular function without significant effect on heart rate. Administration of nifedipine also resulted in significant reductions in total peripheral resistance and diastolic arterial pressure and, at the same time, in increased cardiac output. However, an important distinction between the effects of nifedipine and fantofarone was that nifedipine increased heart rate. To differentiate between the direct and indirect effects of fantofarone, studies were performed in stellectomized anesthetized dogs. In these conditions, in contrast to nonstellectomized dogs, fantofarone (100 micrograms/kg, i.v.) lowered heart rate considerably (from 122 +/- 9 to 67 +/- 10 beats/min; p < 0.01) and the increase in stroke volume was greatly limited in comparison to nonstellectomized dogs. The cardiovascular actions of fantofarone are, therefore, significantly influenced by reflex mechanisms. Thus, these studies indicate that fantofarone is a new calcium antagonist capable of significantly modifying the cardiovascular function without increasing heart rate.
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Abstract
We have investigated the effects of a novel calcium antagonist, fantofarone (SR 33557) on myocardial oxygen consumption (MO2C) and coronary blood flow in anaesthetized dogs during periods of normal and elevated heart rate. 25 micrograms/kg i.v. fantofarone induced a transient increase in coronary blood flow (+25% after 2 min; p < 0.05) and a more sustained decrease in MO2C (-50% after 5 min; p < 0.05). During the periods of pacing, these alterations on cardiac function were not evident. Administration of 50 micrograms/kg i.v. resulted in similar modifications of cardiac function; however, these changes were apparent for a longer duration. Coronary blood flow was still significantly elevated by 29% 2 min after drug administration (p < 0.01) and MO2C was reduced by 67% after 5 min (p < 0.01) and by 56% after 30 min (p < 0.05). Most importantly, a significant decrease in MO2C was observed during the pacing periods (32% after 10 min; p < 0.01). Thus fantofarone can significantly modify cardiac function and in particular, decrease MO2C consumption during periods of elevated heart rate.
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Affiliation(s)
- D Hodeige
- S.A. Sanofi-Pharma N.V., Brussels, Belgium
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Laviola G, Terranova ML, Sedowofia K, Clayton R, Manning A. A mouse model of early social interactions after prenatal drug exposure: a genetic investigation. Psychopharmacology (Berl) 1994; 113:388-94. [PMID: 7862850 DOI: 10.1007/bf02245214] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The aim of the present study was to (i) characterise the mouse behavioural profile (particularly social interactions) during the preweaning period, (ii) assess the effects of prenatal exposure to an anticonvulsant drug widely used in clinical practice, (iii) examine possible genetic differences both in baseline behavioural profiles and in sensitivity to drug-induced effects. Following a balanced intra-strain fostering procedure, the offspring of C57BL/6J and CBA inbred mouse strains from mothers exposed during pregnancy to either phenobarbitone (PHB, 60 mg/kg) or vehicle (VEH) given intraperitoneally (IP) during days 10-16 of gestation, were observed for early social interactions in the home cage during the last part of the preweaning period (days 20 and 21). The behavioural repertoires of the two strains differed markedly, in that C57 pups were more involved in Play soliciting, Locomotor-rotational play, and in Maintenance activities, while CBA mice spent much more time being inactive or exploring the environment. C57 and CBA mice also differed in the sensitivity to PHB exposure. On the whole, time spent in Investigative/Affiliative behaviours was increased, while the frequency of Play soliciting patterns was reduced in PHB-treated mice. The treatment of the fostering mother had only negligible effects, suggesting that PHB-induced changes in behaviour were largely due to direct effects of the substance on the foetus. These results indicate that specific items of the preweaning behavioural profile, and particularly social interactions, are influenced by early PHB exposure, and that the responses are heavily affected by the genotype.
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Affiliation(s)
- G Laviola
- Section of Behavioural Pathophysiology, Istituto Superiore di Sanità, Rome, Italy
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Abstract
Pregnant CBA mice were exposed to aluminium sulfate at a dose of 200 mg/kg body wt injected intraperitoneally during Days 10 to 13 of gestation. We used a variety of ethological measures, which have been shown to be sensitive indicators of toxicants, to assess effects on the mother and the behavioral development of pups. Prenatal aluminium resulted in a reduction in the rate of ultrasonic calling by pups accompanied by a shift in the timing of peak calling; treated pups exhibited decreased growth and delays in neurobehavioral development. The treatment received by a pup's foster mother was also found to influence development. We recommend ultrasonic calling as a sensitive measure in studies of behavioral teratogenicity.
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Affiliation(s)
- J Rankin
- Institute of Cell, Animal and Population Biology, University of Edinburgh, United Kingdom
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Abstract
Fantofarone (SR 33557) is a novel, highly potent calcium channel antagonist representative of a new class of slow channel blockers. In this study, we have assessed its ability to influence cardiac function in two, isolated, perfused heart models and then assessed its ability to modify post-ischaemic functional recovery. In isolated, rat hearts perfused in the Langendorff mode, fantofarone increased coronary flow by 25% at 100 and 1000 nM with no effect on left ventricular pressure or heart rate below 100 nM. In working hearts, fantofarone again increased coronary flow within a similar concentration range. A significant reduction (approximately 40%) was observed in peak systolic pressure and dP/dtmax when hearts were perfused with 1000 nM fantofarone. Working rat hearts were also subjected to a 30 min period of global, low-flow (0.1 ml/min) ischaemia, followed by a 30 min period of reperfusion. Perfusion with 1 or 10 nM fantofarone, began 20 min prior to the onset of ischaemia and continued throughout the ischaemic and reperfusion periods. The addition of 1 nM fantofarone did not cause a significant increase in the recovery of cardiac function during the reperfusion phase. In contrast, perfusion with 10 nM fantofarone resulted in a substantial increase in the recovery of several indices of cardiac function such as aortic output, dP/dtmax and peak systolic pressure. Thus, in the working rat heart, at concentrations which cause minimal alterations to normal cardiac function, fantofarone can improve significantly functional recovery following an ischaemic insult.
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Affiliation(s)
- A Manning
- S.A. Sanofi-Pharma N.V., Brussels, Belgium
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Abstract
Potentially noxious substances may act as fetal teratogens at levels far lower than those required to produce detectable effects in adults, and behavioural teratogenicity may occur at levels lower than those which produce morphological teratogenesis. Aluminium (Al) is a potential neurotoxin in adults. Since pregnant women may be exposed to untoward levels of Al compounds under certain conditions, we have examined the long-term effects of treating the pregnant mouse with intraperitoneal or oral aluminium sulphate on brain biochemistry and behaviour of the offspring. The cholinergic system, as evaluated by the activity of choline acetyltransferase (ChAT), was affected differentially in different regions of the brain, and still showed significant effects in the adult. Differences between the intraperitoneal and oral series in the magnitude of effect seen in the regions of the brain probably reflect differences in the effective level of exposure. Growth rate and psychomotor maturation in the pre-weaning mouse were affected in the intraperitoneal series only, showing a marked post-natal maternal effect.
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Affiliation(s)
- R M Clayton
- Division of Biological Sciences, University of Edinburgh
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Abstract
A total of 8 patients in whom renal tuberculosis was suspected on clinical or radiological grounds but in whom confirmation could not be achieved by urine culture underwent renal fine needle aspiration. Immediate cytodiagnosis was accomplished in 7 of 8 patients by the finding of Langhans' giant histiocytes, epithelioid histiocytes and necrotic debris. Later confirmation was obtained in all 8 cases by radiometric culture of aspiration material or saline rinses of the fine needles. This experience introduces fine needle aspiration cytology as a diagnostic modality in renal tuberculosis.
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Affiliation(s)
- J Baniel
- Department of Urology, School of Pathology, South African Institute for Medical Research, Johannesburg
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