1
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Morgado BE, Sicardy B, Braga-Ribas F, Ortiz JL, Salo H, Vachier F, Desmars J, Pereira CL, Santos-Sanz P, Sfair R, de Santana T, Assafin M, Vieira-Martins R, Gomes-Júnior AR, Margoti G, Dhillon VS, Fernández-Valenzuela E, Broughton J, Bradshaw J, Langersek R, Benedetti-Rossi G, Souami D, Holler BJ, Kretlow M, Boufleur RC, Camargo JIB, Duffard R, Beisker W, Morales N, Lecacheux J, Rommel FL, Herald D, Benz W, Jehin E, Jankowsky F, Marsh TR, Littlefair SP, Bruno G, Pagano I, Brandeker A, Collier-Cameron A, Florén HG, Hara N, Olofsson G, Wilson TG, Benkhaldoun Z, Busuttil R, Burdanov A, Ferrais M, Gault D, Gillon M, Hanna W, Kerr S, Kolb U, Nosworthy P, Sebastian D, Snodgrass C, Teng JP, de Wit J. Author Correction: A dense ring of the trans-Neptunian object Quaoar outside its Roche limit. Nature 2024; 626:E2. [PMID: 38228877 DOI: 10.1038/s41586-024-07031-w] [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: 01/18/2024]
Affiliation(s)
- B E Morgado
- Federal University of Rio de Janeiro - Observatory of Valongo, Rio de Janeiro, Brazil.
- National Observatory/MCTI, Rio de Janeiro, Brazil.
- Interinstitutional e-Astronomy Laboratory (LIneA), Rio de Janeiro, Brazil.
| | - B Sicardy
- LESIA, Observatory of Paris, University PSL, CNRS, UPMC, Sorbonne University, University of Paris Diderot, Sorbonne Paris City, Meudon, France
| | - F Braga-Ribas
- Federal University of Technology, Paraná (UTFPR/DAFIS), Curitiba, Brazil
| | - J L Ortiz
- Institute of Astrophysics at Andalucía, IAA-CSIC, Granada, Spain
| | - H Salo
- Space Physics and Astronomy Research unit, University of Oulu, Oulu, Finland
| | - F Vachier
- The Institute of Celestial Mechanics and Ephemeris Calculation (IMCCE), Observatory of Paris, PSL Research University, CNRS, Sorbonne University, UPMC University of Paris, University of Lille, Lille, France
| | - J Desmars
- The Institute of Celestial Mechanics and Ephemeris Calculation (IMCCE), Observatory of Paris, PSL Research University, CNRS, Sorbonne University, UPMC University of Paris, University of Lille, Lille, France
- Polytechnic Institute of Advanced Sciences (IPSA), Ivry-sur-Seine, France
| | - C L Pereira
- National Observatory/MCTI, Rio de Janeiro, Brazil
- Interinstitutional e-Astronomy Laboratory (LIneA), Rio de Janeiro, Brazil
| | - P Santos-Sanz
- Institute of Astrophysics at Andalucía, IAA-CSIC, Granada, Spain
| | - R Sfair
- Institute for Astronomy and Astrophysics, Eberhard Karls University of Tübingen, Tübingen, Germany
- Orbital Dynamics and Planetology Group, UNESP - São Paulo State University, Guaratinguetá, Brazil
| | - T de Santana
- LESIA, Observatory of Paris, University PSL, CNRS, UPMC, Sorbonne University, University of Paris Diderot, Sorbonne Paris City, Meudon, France
- Orbital Dynamics and Planetology Group, UNESP - São Paulo State University, Guaratinguetá, Brazil
| | - M Assafin
- Federal University of Rio de Janeiro - Observatory of Valongo, Rio de Janeiro, Brazil
- Interinstitutional e-Astronomy Laboratory (LIneA), Rio de Janeiro, Brazil
| | - R Vieira-Martins
- National Observatory/MCTI, Rio de Janeiro, Brazil
- Interinstitutional e-Astronomy Laboratory (LIneA), Rio de Janeiro, Brazil
| | - A R Gomes-Júnior
- Interinstitutional e-Astronomy Laboratory (LIneA), Rio de Janeiro, Brazil
- Orbital Dynamics and Planetology Group, UNESP - São Paulo State University, Guaratinguetá, Brazil
- Institute of Physics, Federal University of Uberlândia, Uberlândia, Brazil
| | - G Margoti
- Federal University of Technology, Paraná (UTFPR/DAFIS), Curitiba, Brazil
| | - V S Dhillon
- Department of Physics and Astronomy, University of Sheffield, Sheffield, UK
- Institute of Astrophysics of The Canary Islands, La Laguna, Spain
| | | | - J Broughton
- Reedy Creek Observatory, Gold Coast, Queensland, Australia
- Trans-Tasman Occultation Alliance (TTOA), Wellington, New Zealand
| | - J Bradshaw
- Samford Valley Observatory (Q79), Brisbane, Queensland, Australia
| | - R Langersek
- Algester Astronomical Observatory, Brisbane, Queensland, Australia
| | - G Benedetti-Rossi
- Interinstitutional e-Astronomy Laboratory (LIneA), Rio de Janeiro, Brazil
- Orbital Dynamics and Planetology Group, UNESP - São Paulo State University, Guaratinguetá, Brazil
| | - D Souami
- LESIA, Observatory of Paris, University PSL, CNRS, UPMC, Sorbonne University, University of Paris Diderot, Sorbonne Paris City, Meudon, France
- Observatory of the Côte d'Azur, Lagrange Laboratory UMR7293 CNRS, Nice, France
- naXys, University of Namur, Namur, Belgium
| | - B J Holler
- Space Telescope Science Institute, Baltimore, MD, USA
| | - M Kretlow
- Institute of Astrophysics at Andalucía, IAA-CSIC, Granada, Spain
- International Occultation Timing Association / European Section, Hannover, Germany
- International Amateur Observatory e.V. (IAS), Mittenwalde, Germany
| | - R C Boufleur
- National Observatory/MCTI, Rio de Janeiro, Brazil
- Interinstitutional e-Astronomy Laboratory (LIneA), Rio de Janeiro, Brazil
| | - J I B Camargo
- National Observatory/MCTI, Rio de Janeiro, Brazil
- Interinstitutional e-Astronomy Laboratory (LIneA), Rio de Janeiro, Brazil
| | - R Duffard
- Institute of Astrophysics at Andalucía, IAA-CSIC, Granada, Spain
| | - W Beisker
- International Occultation Timing Association / European Section, Hannover, Germany
- International Amateur Observatory e.V. (IAS), Mittenwalde, Germany
| | - N Morales
- Institute of Astrophysics at Andalucía, IAA-CSIC, Granada, Spain
| | - J Lecacheux
- LESIA, Observatory of Paris, University PSL, CNRS, UPMC, Sorbonne University, University of Paris Diderot, Sorbonne Paris City, Meudon, France
| | - F L Rommel
- National Observatory/MCTI, Rio de Janeiro, Brazil
- Interinstitutional e-Astronomy Laboratory (LIneA), Rio de Janeiro, Brazil
| | - D Herald
- Trans-Tasman Occultation Alliance (TTOA), Wellington, New Zealand
| | - W Benz
- Institute of Physics, University of Bern, Bern, Switzerland
- Center for Space and Habitability, University of Bern, Bern, Switzerland
| | - E Jehin
- STAR Institute, University of Liège, Liège, Belgium
| | - F Jankowsky
- Heidelberg-Königstuhl State Observatory, Heidelberg, Germany
| | - T R Marsh
- Department of Physics, University of Warwick, Coventry, UK
| | - S P Littlefair
- Department of Physics and Astronomy, University of Sheffield, Sheffield, UK
| | - G Bruno
- INAF, Catania Astrophysical Observatory, Catania, Italy
| | - I Pagano
- INAF, Catania Astrophysical Observatory, Catania, Italy
| | - A Brandeker
- Department of Astronomy, Stockholm University, AlbaNova University Center, Stockholm, Sweden
| | - A Collier-Cameron
- Centre for Exoplanet Science, SUPA School of Physics and Astronomy, University of St Andrews, North Haugh, St Andrews, UK
| | - H G Florén
- Department of Astronomy, Stockholm University, AlbaNova University Center, Stockholm, Sweden
| | - N Hara
- Astronomical Observatory at the University of Geneva, Versoix, Switzerland
| | - G Olofsson
- Department of Astronomy, Stockholm University, AlbaNova University Center, Stockholm, Sweden
| | - T G Wilson
- Centre for Exoplanet Science, SUPA School of Physics and Astronomy, University of St Andrews, North Haugh, St Andrews, UK
| | - Z Benkhaldoun
- Oukaimeden Observatory, High Energy Physics and Astrophysics Laboratory, FSSM, Cadi Ayyad University, Marrakech, Morocco
| | - R Busuttil
- School of Physical Sciences, The Open University, Walton Hall, Milton Keynes, UK
| | - A Burdanov
- Department of Earth, Atmospheric and Planetary Sciences, MIT, Cambridge, MA, USA
| | - M Ferrais
- Laboratory of Astrophysics of Marseille, University of Aix Marseille, CNRS, CNES, Marseille, France
| | - D Gault
- Trans-Tasman Occultation Alliance (TTOA), Wellington, New Zealand
| | - M Gillon
- Astrobiology Research Unit, University of Liège, Liège, Belgium
| | - W Hanna
- Trans-Tasman Occultation Alliance (TTOA), Wellington, New Zealand
| | - S Kerr
- Trans-Tasman Occultation Alliance (TTOA), Wellington, New Zealand
- Astronomical Association of Queensland, Pimpama, Queensland, Australia
| | - U Kolb
- School of Physical Sciences, The Open University, Walton Hall, Milton Keynes, UK
| | - P Nosworthy
- Trans-Tasman Occultation Alliance (TTOA), Wellington, New Zealand
| | - D Sebastian
- School of Physics and Astronomy, University of Birmingham, Birmingham, UK
| | - C Snodgrass
- Institute for Astronomy, University of Edinburgh, Royal Observatory, Edinburgh, UK
| | - J P Teng
- AGORA Observatory of Makes, AGORA, La Rivière, France
| | - J de Wit
- Department of Earth, Atmospheric and Planetary Sciences, MIT, Cambridge, MA, USA
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2
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Morgado BE, Sicardy B, Braga-Ribas F, Ortiz JL, Salo H, Vachier F, Desmars J, Pereira CL, Santos-Sanz P, Sfair R, de Santana T, Assafin M, Vieira-Martins R, Gomes-Júnior AR, Margoti G, Dhillon VS, Fernández-Valenzuela E, Broughton J, Bradshaw J, Langersek R, Benedetti-Rossi G, Souami D, Holler BJ, Kretlow M, Boufleur RC, Camargo JIB, Duffard R, Beisker W, Morales N, Lecacheux J, Rommel FL, Herald D, Benz W, Jehin E, Jankowsky F, Marsh TR, Littlefair SP, Bruno G, Pagano I, Brandeker A, Collier-Cameron A, Florén HG, Hara N, Olofsson G, Wilson TG, Benkhaldoun Z, Busuttil R, Burdanov A, Ferrais M, Gault D, Gillon M, Hanna W, Kerr S, Kolb U, Nosworthy P, Sebastian D, Snodgrass C, Teng JP, de Wit J. A dense ring of the trans-Neptunian object Quaoar outside its Roche limit. Nature 2023; 614:239-243. [PMID: 36755175 DOI: 10.1038/s41586-022-05629-6] [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: 08/05/2022] [Accepted: 12/06/2022] [Indexed: 02/10/2023]
Abstract
Planetary rings are observed not only around giant planets1, but also around small bodies such as the Centaur Chariklo2 and the dwarf planet Haumea3. Up to now, all known dense rings were located close enough to their parent bodies, being inside the Roche limit, where tidal forces prevent material with reasonable densities from aggregating into a satellite. Here we report observations of an inhomogeneous ring around the trans-Neptunian body (50000) Quaoar. This trans-Neptunian object has an estimated radius4 of 555 km and possesses a roughly 80-km satellite5 (Weywot) that orbits at 24 Quaoar radii6,7. The detected ring orbits at 7.4 radii from the central body, which is well outside Quaoar's classical Roche limit, thus indicating that this limit does not always determine where ring material can survive. Our local collisional simulations show that elastic collisions, based on laboratory experiments8, can maintain a ring far away from the body. Moreover, Quaoar's ring orbits close to the 1/3 spin-orbit resonance9 with Quaoar, a property shared by Chariklo's2,10,11 and Haumea's3 rings, suggesting that this resonance plays a key role in ring confinement for small bodies.
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Affiliation(s)
- B E Morgado
- Federal University of Rio de Janeiro - Observatory of Valongo, Rio de Janeiro, Brazil.
- National Observatory/MCTI, Rio de Janeiro, Brazil.
- Interinstitutional e-Astronomy Laboratory (LIneA), Rio de Janeiro, Brazil.
| | - B Sicardy
- LESIA, Observatory of Paris, University PSL, CNRS, UPMC, Sorbonne University, University of Paris Diderot, Sorbonne Paris City, Meudon, France
| | - F Braga-Ribas
- Federal University of Technology, Paraná (UTFPR/DAFIS), Curitiba, Brazil
| | - J L Ortiz
- Institute of Astrophysics at Andalucía, IAA-CSIC, Granada, Spain
| | - H Salo
- Space Physics and Astronomy Research unit, University of Oulu, Oulu, Finland
| | - F Vachier
- The Institute of Celestial Mechanics and Ephemeris Calculation (IMCCE), Observatory of Paris, PSL Research University, CNRS, Sorbonne University, UPMC University of Paris, University of Lille, Lille, France
| | - J Desmars
- The Institute of Celestial Mechanics and Ephemeris Calculation (IMCCE), Observatory of Paris, PSL Research University, CNRS, Sorbonne University, UPMC University of Paris, University of Lille, Lille, France
- Polytechnic Institute of Advanced Sciences (IPSA), Ivry-sur-Seine, France
| | - C L Pereira
- National Observatory/MCTI, Rio de Janeiro, Brazil
- Interinstitutional e-Astronomy Laboratory (LIneA), Rio de Janeiro, Brazil
| | - P Santos-Sanz
- Institute of Astrophysics at Andalucía, IAA-CSIC, Granada, Spain
| | - R Sfair
- Institute for Astronomy and Astrophysics, Eberhard Karls University of Tübingen, Tübingen, Germany
- Orbital Dynamics and Planetology Group, UNESP - São Paulo State University, Guaratinguetá, Brazil
| | - T de Santana
- LESIA, Observatory of Paris, University PSL, CNRS, UPMC, Sorbonne University, University of Paris Diderot, Sorbonne Paris City, Meudon, France
- Orbital Dynamics and Planetology Group, UNESP - São Paulo State University, Guaratinguetá, Brazil
| | - M Assafin
- Federal University of Rio de Janeiro - Observatory of Valongo, Rio de Janeiro, Brazil
- Interinstitutional e-Astronomy Laboratory (LIneA), Rio de Janeiro, Brazil
| | - R Vieira-Martins
- National Observatory/MCTI, Rio de Janeiro, Brazil
- Interinstitutional e-Astronomy Laboratory (LIneA), Rio de Janeiro, Brazil
| | - A R Gomes-Júnior
- Interinstitutional e-Astronomy Laboratory (LIneA), Rio de Janeiro, Brazil
- Orbital Dynamics and Planetology Group, UNESP - São Paulo State University, Guaratinguetá, Brazil
- Institute of Physics, Federal University of Uberlândia, Uberlândia, Brazil
| | - G Margoti
- Federal University of Technology, Paraná (UTFPR/DAFIS), Curitiba, Brazil
| | - V S Dhillon
- Department of Physics and Astronomy, University of Sheffield, Sheffield, UK
- Institute of Astrophysics of The Canary Islands, La Laguna, Spain
| | | | - J Broughton
- Reedy Creek Observatory, Gold Coast, Queensland, Australia
- Trans-Tasman Occultation Alliance (TTOA), Wellington, New Zealand
| | - J Bradshaw
- Samford Valley Observatory (Q79), Brisbane, Queensland, Australia
| | - R Langersek
- Algester Astronomical Observatory, Brisbane, Queensland, Australia
| | - G Benedetti-Rossi
- Interinstitutional e-Astronomy Laboratory (LIneA), Rio de Janeiro, Brazil
- Orbital Dynamics and Planetology Group, UNESP - São Paulo State University, Guaratinguetá, Brazil
| | - D Souami
- LESIA, Observatory of Paris, University PSL, CNRS, UPMC, Sorbonne University, University of Paris Diderot, Sorbonne Paris City, Meudon, France
- Observatory of the Côte d'Azur, Lagrange Laboratory UMR7293 CNRS, Nice, France
- naXys, University of Namur, Namur, Belgium
| | - B J Holler
- Space Telescope Science Institute, Baltimore, MD, USA
| | - M Kretlow
- Institute of Astrophysics at Andalucía, IAA-CSIC, Granada, Spain
- International Occultation Timing Association / European Section, Hannover, Germany
- International Amateur Observatory e.V. (IAS), Mittenwalde, Germany
| | - R C Boufleur
- National Observatory/MCTI, Rio de Janeiro, Brazil
- Interinstitutional e-Astronomy Laboratory (LIneA), Rio de Janeiro, Brazil
| | - J I B Camargo
- National Observatory/MCTI, Rio de Janeiro, Brazil
- Interinstitutional e-Astronomy Laboratory (LIneA), Rio de Janeiro, Brazil
| | - R Duffard
- Institute of Astrophysics at Andalucía, IAA-CSIC, Granada, Spain
| | - W Beisker
- International Occultation Timing Association / European Section, Hannover, Germany
- International Amateur Observatory e.V. (IAS), Mittenwalde, Germany
| | - N Morales
- Institute of Astrophysics at Andalucía, IAA-CSIC, Granada, Spain
| | - J Lecacheux
- LESIA, Observatory of Paris, University PSL, CNRS, UPMC, Sorbonne University, University of Paris Diderot, Sorbonne Paris City, Meudon, France
| | - F L Rommel
- National Observatory/MCTI, Rio de Janeiro, Brazil
- Interinstitutional e-Astronomy Laboratory (LIneA), Rio de Janeiro, Brazil
| | - D Herald
- Trans-Tasman Occultation Alliance (TTOA), Wellington, New Zealand
| | - W Benz
- Institute of Physics, University of Bern, Bern, Switzerland
- Center for Space and Habitability, University of Bern, Bern, Switzerland
| | - E Jehin
- STAR Institute, University of Liège, Liège, Belgium
| | - F Jankowsky
- Heidelberg-Königstuhl State Observatory, Heidelberg, Germany
| | - T R Marsh
- Department of Physics, University of Warwick, Coventry, UK
| | - S P Littlefair
- Department of Physics and Astronomy, University of Sheffield, Sheffield, UK
| | - G Bruno
- INAF, Catania Astrophysical Observatory, Catania, Italy
| | - I Pagano
- INAF, Catania Astrophysical Observatory, Catania, Italy
| | - A Brandeker
- Department of Astronomy, Stockholm University, AlbaNova University Center, Stockholm, Sweden
| | - A Collier-Cameron
- Centre for Exoplanet Science, SUPA School of Physics and Astronomy, University of St Andrews, North Haugh, St Andrews, UK
| | - H G Florén
- Department of Astronomy, Stockholm University, AlbaNova University Center, Stockholm, Sweden
| | - N Hara
- Astronomical Observatory at the University of Geneva, Versoix, Switzerland
| | - G Olofsson
- Department of Astronomy, Stockholm University, AlbaNova University Center, Stockholm, Sweden
| | - T G Wilson
- Centre for Exoplanet Science, SUPA School of Physics and Astronomy, University of St Andrews, North Haugh, St Andrews, UK
| | - Z Benkhaldoun
- Oukaimeden Observatory, High Energy Physics and Astrophysics Laboratory, FSSM, Cadi Ayyad University, Marrakech, Morocco
| | - R Busuttil
- School of Physical Sciences, The Open University, Walton Hall, Milton Keynes, UK
| | - A Burdanov
- Department of Earth, Atmospheric and Planetary Sciences, MIT, Cambridge, MA, USA
| | - M Ferrais
- Laboratory of Astrophysics of Marseille, University of Aix Marseille, CNRS, CNES, Marseille, France
| | - D Gault
- Trans-Tasman Occultation Alliance (TTOA), Wellington, New Zealand
| | - M Gillon
- Astrobiology Research Unit, University of Liège, Liège, Belgium
| | - W Hanna
- Trans-Tasman Occultation Alliance (TTOA), Wellington, New Zealand
| | - S Kerr
- Trans-Tasman Occultation Alliance (TTOA), Wellington, New Zealand
- Astronomical Association of Queensland, Pimpama, Queensland, Australia
| | - U Kolb
- School of Physical Sciences, The Open University, Walton Hall, Milton Keynes, UK
| | - P Nosworthy
- Trans-Tasman Occultation Alliance (TTOA), Wellington, New Zealand
| | - D Sebastian
- School of Physics and Astronomy, University of Birmingham, Birmingham, UK
| | - C Snodgrass
- Institute for Astronomy, University of Edinburgh, Royal Observatory, Edinburgh, UK
| | - J P Teng
- AGORA Observatory of Makes, AGORA, La Rivière, France
| | - J de Wit
- Department of Earth, Atmospheric and Planetary Sciences, MIT, Cambridge, MA, USA
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3
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Reppe K, Hofmann K, Parameswarappa SG, Pereira CL, Nouailles G, Bonin A, Klopfleisch R, Seeberger PH, Witzenrath M. Eine semi-synthetische S. pneumoniae Serotyp 3 Tetrasaccharid-Konjugatvakzine schützt Mäuse vor Pneumonie. Pneumologie 2018. [DOI: 10.1055/s-0037-1619422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- K Reppe
- Med. Klinik mit Schwerpunkt Infektiologie & Pneumologie, Charité Universitätsmedizin Berlin
| | - K Hofmann
- Med. Klinik mit Schwerpunkt Infektiologie & Pneumologie, Charité Universitätsmedizin Berlin
| | | | | | - G Nouailles
- Med. Klinik mit Schwerpunkt Infektiologie & Pneumologie, Charité Universitätsmedizin Berlin
| | | | | | - PH Seeberger
- Max Planck Institut für Kolloid- und Grenzflächenforschung, Potsdam; Institut für Chemie und Biochemie, Fu Berlin
| | - M Witzenrath
- Med. Klinik mit Schwerpunkt Infektiologie & Pneumologie, Charité Universitätsmedizin Berlin
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4
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Baek JY, Geissner A, Rathwell DCK, Meierhofer D, Pereira CL, Seeberger PH. A modular synthetic route to size-defined immunogenic Haemophilus influenzae b antigens is key to the identification of an octasaccharide lead vaccine candidate. Chem Sci 2017; 9:1279-1288. [PMID: 29675174 PMCID: PMC5887106 DOI: 10.1039/c7sc04521b] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [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: 10/18/2017] [Accepted: 12/05/2017] [Indexed: 01/03/2023] Open
Abstract
A Haemophilus influenzae b vaccine lead antigen was identified by the immunological evaluation of chemically precisely defined capsular polysaccharide repeating unit oligosaccharides.
The first glycoconjugate vaccine using isolated glycans was licensed to protect children from Haemophilus influenzae serotype b (Hib) infections. Subsequently, the first semisynthetic glycoconjugate vaccine using a mixture of antigens derived by polymerization targeted the same pathogen. Still, a detailed understanding concerning the correlation between oligosaccharide chain length and the immune response towards the polyribosyl-ribitol-phosphate (PRP) capsular polysaccharide that surrounds Hib remains elusive. The design of semisynthetic and synthetic Hib vaccines critically depends on the identification of the minimally protective epitope. Here, we demonstrate that an octasaccharide antigen containing four repeating disaccharide units resembles PRP polysaccharide in terms of immunogenicity and recognition by anti-Hib antibodies. Key to this discovery was the development of a modular synthesis that enabled access to oligosaccharides up to decamers. Glycan arrays containing the synthetic oligosaccharides were used to analyze anti-PRP sera for antibodies. Conjugates of the synthetic antigens and the carrier protein CRM197, which is used in licensed vaccines, were employed in immunization studies in rabbits.
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Affiliation(s)
- J Y Baek
- Max Planck Institute of Colloids and Interfaces , 14476 Potsdam , Germany . ;
| | - A Geissner
- Max Planck Institute of Colloids and Interfaces , 14476 Potsdam , Germany . ; .,Freie Universität Berlin , Department of Chemistry and Biochemistry , 14195 Berlin , Germany
| | - D C K Rathwell
- Max Planck Institute of Colloids and Interfaces , 14476 Potsdam , Germany . ; .,Freie Universität Berlin , Department of Chemistry and Biochemistry , 14195 Berlin , Germany
| | - D Meierhofer
- Max-Planck Institute for Molecular Genetics (MPIMG) , 14195 Berlin , Germany
| | - C L Pereira
- Max Planck Institute of Colloids and Interfaces , 14476 Potsdam , Germany . ;
| | - P H Seeberger
- Max Planck Institute of Colloids and Interfaces , 14476 Potsdam , Germany . ; .,Freie Universität Berlin , Department of Chemistry and Biochemistry , 14195 Berlin , Germany
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5
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Parameswarappa SG, Reppe K, Geissner A, Ménová P, Govindan S, Calow ADJ, Wahlbrink A, Weishaupt MW, Monnanda BP, Bell RL, Pirofski LA, Suttorp N, Sander LE, Witzenrath M, Pereira CL, Anish C, Seeberger PH. A Semi-synthetic Oligosaccharide Conjugate Vaccine Candidate Confers Protection against Streptococcus pneumoniae Serotype 3 Infection. Cell Chem Biol 2016; 23:1407-1416. [PMID: 27818299 PMCID: PMC5234679 DOI: 10.1016/j.chembiol.2016.09.016] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Revised: 09/07/2016] [Accepted: 10/10/2016] [Indexed: 02/07/2023]
Abstract
The identification of immunogenic glycotopes that render glycoconjugate vaccines protective is key to improving vaccine efficacy. Synthetic oligosaccharides are an attractive alternative to the heterogeneous preparations of purified polysaccharides that most marketed glycoconjugate vaccines are based on. To investigate the potency of semi-synthetic glycoconjugates, we chose the least-efficient serotype in the current pneumococcal conjugate vaccine Prevnar 13, Streptococcus pneumoniae serotype 3 (ST3). Glycan arrays containing synthetic ST3 repeating unit oligosaccharides were used to screen a human reference serum for antibodies and to define the recognition site of two ST3-specific protective monoclonal antibodies. The glycan array screens identified a tetrasaccharide that was selected for in-depth immunological evaluation. The tetrasaccharide-CRM197 carrier protein conjugate elicited protective immunity as evidenced by opsonophagocytosis assays and protection against pneumonia caused by ST3 in mice. Formulation of the defined protective lead candidate glycotope has to be further evaluated to elicit optimal long-term immunity.
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Affiliation(s)
| | - Katrin Reppe
- Department of Infectious Diseases and Pulmonary Medicine, Charité - Universitätsmedizin Berlin, Chariteplatz 1, 10117 Berlin, Germany
| | - Andreas Geissner
- Department of Biomolecular Systems, Max-Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany; Institute of Chemistry and Biochemistry, Freie Universität Berlin, Arnimallee 22, 14195 Berlin, Germany
| | - Petra Ménová
- Department of Biomolecular Systems, Max-Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
| | - Subramanian Govindan
- Department of Biomolecular Systems, Max-Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
| | - Adam D J Calow
- Department of Biomolecular Systems, Max-Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
| | - Annette Wahlbrink
- Department of Biomolecular Systems, Max-Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
| | - Markus W Weishaupt
- Department of Biomolecular Systems, Max-Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany; Institute of Chemistry and Biochemistry, Freie Universität Berlin, Arnimallee 22, 14195 Berlin, Germany
| | - Bopanna Ponnappa Monnanda
- Department of Biomolecular Systems, Max-Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany; Institute of Chemistry and Biochemistry, Freie Universität Berlin, Arnimallee 22, 14195 Berlin, Germany
| | - Roland Lawrence Bell
- Department of Infectious Diseases and Pulmonary Medicine, Charité - Universitätsmedizin Berlin, Chariteplatz 1, 10117 Berlin, Germany
| | - Liise-Anne Pirofski
- Division of Infectious Diseases, Department of Medicine, Albert Einstein College of Medicine and Montefiore Medical Center, Bronx, NY 10461, USA; Department of Microbiology and Immunology, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Norbert Suttorp
- Department of Infectious Diseases and Pulmonary Medicine, Charité - Universitätsmedizin Berlin, Chariteplatz 1, 10117 Berlin, Germany
| | - Leif Erik Sander
- Department of Infectious Diseases and Pulmonary Medicine, Charité - Universitätsmedizin Berlin, Chariteplatz 1, 10117 Berlin, Germany
| | - Martin Witzenrath
- Department of Infectious Diseases and Pulmonary Medicine, Charité - Universitätsmedizin Berlin, Chariteplatz 1, 10117 Berlin, Germany.
| | - Claney Lebev Pereira
- Department of Biomolecular Systems, Max-Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
| | - Chakkumkal Anish
- Department of Biomolecular Systems, Max-Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
| | - Peter H Seeberger
- Department of Biomolecular Systems, Max-Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany; Institute of Chemistry and Biochemistry, Freie Universität Berlin, Arnimallee 22, 14195 Berlin, Germany.
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Schumann B, Reppe K, Hahm HS, Parameswarappa SG, Wahlbrink A, Govindan S, Witzenrath M, Anish C, Pereira CL, Seeberger PH. Passive Immunisierung mit dem monoklonalen Antikörper 1H8 schützt Mäuse vor pneumogener Sepsis. Pneumologie 2016. [DOI: 10.1055/s-0036-1572080] [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: 10/22/2022]
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Möginger U, Resemann A, Martin CE, Parameswarappa S, Govindan S, Wamhoff EC, Broecker F, Suckau D, Pereira CL, Anish C, Seeberger PH, Kolarich D. Cross Reactive Material 197 glycoconjugate vaccines contain privileged conjugation sites. Sci Rep 2016; 6:20488. [PMID: 26841683 PMCID: PMC4740906 DOI: 10.1038/srep20488] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [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: 08/12/2015] [Accepted: 01/05/2016] [Indexed: 12/22/2022] Open
Abstract
Production of glycoconjugate vaccines involves the chemical conjugation of glycans to an immunogenic carrier protein such as Cross-Reactive-Material-197 (CRM197). Instead of using glycans from natural sources recent vaccine development has been focusing on the use of synthetically defined minimal epitopes. While the glycan is structurally defined, the attachment sites on the protein are not. Fully characterized conjugates and batch-to-batch comparisons are the key to eventually create completely defined conjugates. A variety of glycoconjugates consisting of CRM197 and synthetic oligosaccharide epitopes was characterised using mass spectrometry techniques. The primary structure was assessed by combining intact protein MALDI-TOF-MS, LC-MALDI-TOF-MS middle-down and LC-ESI-MS bottom-up approaches. The middle-down approach on CNBr cleaved glycopeptides provided almost complete sequence coverage, facilitating rapid batch-to-batch comparisons, resolving glycan loading and identification of side products. Regions close to the N- and C-termini were most efficiently conjugated.
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Affiliation(s)
- Uwe Möginger
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, 14424 Potsdam, Germany
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Germany
| | | | - Christopher E. Martin
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, 14424 Potsdam, Germany
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Germany
| | - Sharavathi Parameswarappa
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, 14424 Potsdam, Germany
| | - Subramanian Govindan
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, 14424 Potsdam, Germany
| | - Eike-Christian Wamhoff
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, 14424 Potsdam, Germany
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Germany
| | - Felix Broecker
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, 14424 Potsdam, Germany
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Germany
| | | | - Claney Lebev Pereira
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, 14424 Potsdam, Germany
| | - Chakkumkal Anish
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, 14424 Potsdam, Germany
| | - Peter H. Seeberger
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, 14424 Potsdam, Germany
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Germany
| | - Daniel Kolarich
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, 14424 Potsdam, Germany
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Santana HS, Silva LCF, Pereira CL, Simião-Ferreira J, Angelini R. The rainy season increases the abundance and richness of the aquatic insect community in a Neotropical reservoir. BRAZ J BIOL 2016; 75:144-51. [PMID: 25945631 DOI: 10.1590/1519-6984.09213] [Citation(s) in RCA: 4] [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] [Received: 06/04/2013] [Accepted: 09/25/2013] [Indexed: 11/22/2022] Open
Abstract
Alterations in aquatic systems and changes in water levels, whether due to rains or dam-mediated control can cause changes in community structure, forcing the community to readjust to the new environment. This study tested the hypothesis that there is an increase in the richness and abundance of aquatic insects during the rainy season in the Serra da Mesa Reservoir, with the premise that increasing the reservoir level provides greater external material input and habitat diversity, and, therefore, conditions that promote colonization by more species. We used the paired t test to test the differences in richness, beta diversity, and abundance, and a Non-metric Multidimensional Scaling (NMDS) was performed to identify patterns in the community under study. Additionally, Pearson correlations were analyzed between the richness, abundance, and beta diversity and the level of the reservoir. We collected 35,028 aquatic insect larvae (9,513 in dry period and 25,515 in the rainy season), predominantly of the Chironomidae family, followed by orders Ephemeroptera, Trichoptera, and Odonata. Among the 33 families collected, only 12 occurred in the dry season, while all occurred in the rainy season. These families are common in lentic environments, and the dominance of Chironomidae was associated with its fast colonization, their behavior of living at high densities and the great tolerance to low levels of oxygen in the environment. The hypothesis was confirmed, as the richness, beta diversity, and abundance were positively affected by the increase in water levels due to the rainy season, which most likely led to greater external material input, greater heterogeneity of habitat, and better conditions for colonization by several families.
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Affiliation(s)
- H S Santana
- Programa de Pós-graduação em Ecologia de Ambientes Aquáticos Continentais, Universidade Estadual de Maringá, Maringá, PR, Brazil
| | - L C F Silva
- Núcleo de Fauna e Recursos Pesqueiros, Instituto Brasileiro de Meio Ambiente e Recursos Naturais Renováveis em Goiás, Goiânia, GO, Brazil
| | - C L Pereira
- Unidade de Ciências Exatas e Tecnológicas, Laboratório de Pesquisas Ecológicas e Educação Científica, Universidade Estadual de Goiás, Anápolis, GO, Brazil
| | - J Simião-Ferreira
- Unidade de Ciências Exatas e Tecnológicas, Laboratório de Pesquisas Ecológicas e Educação Científica, Universidade Estadual de Goiás, Anápolis, GO, Brazil
| | - R Angelini
- Departamento de Engenharia Civil, Universidade Federal do Rio Grande do Norte, Natal, RN, Brazil
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Anish C, Schumann B, Pereira CL, Seeberger PH. Chemical biology approaches to designing defined carbohydrate vaccines. ACTA ACUST UNITED AC 2015; 21:38-50. [PMID: 24439205 DOI: 10.1016/j.chembiol.2014.01.002] [Citation(s) in RCA: 122] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2013] [Revised: 12/27/2013] [Accepted: 01/02/2014] [Indexed: 01/08/2023]
Abstract
Carbohydrate antigens have shown promise as important targets for developing effective vaccines and pathogen detection strategies. Modifying purified microbial glycans through synthetic routes or completely synthesizing antigenic motifs are attractive options to advance carbohydrate vaccine development. However, limited knowledge on structure-property correlates hampers the discovery of immunoprotective carbohydrate epitopes. Recent advancements in tools for glycan modification, high-throughput screening of biological samples, and 3D structural analysis may facilitate antigen discovery process. This review focuses on advances that accelerate carbohydrate-based vaccine development and various technologies that are driving these efforts. Herein we provide a critical overview of approaches and resources available for rational design of better carbohydrate antigens. Structurally defined and fully synthetic oligosaccharides, designed based on molecular understanding of antigen-antibody interactions, offer a promising alternative for developing future carbohydrate vaccines.
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Affiliation(s)
- Chakkumkal Anish
- Department for Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14424 Potsdam, Germany.
| | - Benjamin Schumann
- Department for Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14424 Potsdam, Germany; Institute of Chemistry and Biochemistry, Freie Universität Berlin, Arnimallee 22, 14195 Berlin, Germany
| | - Claney Lebev Pereira
- Department for Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14424 Potsdam, Germany
| | - Peter H Seeberger
- Department for Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14424 Potsdam, Germany; Institute of Chemistry and Biochemistry, Freie Universität Berlin, Arnimallee 22, 14195 Berlin, Germany.
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Reppe K, Anish C, Bell R, Parameswarappa SG, Govindan S, Pereira CL, Dietert K, Sander LE, Gruber AD, Suttorp N, Seeberger PH, Witzenrath M. Eine synthetische S. pneumoniae Oligosaccharid-Konjugatvakzine schützt Mäuse vor Pneumonie. Pneumologie 2014. [DOI: 10.1055/s-0034-1367903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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11
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Reppe K, Anish C, Bell R, Parameswarappa SG, Govindan S, Pereira CL, Dietert K, Sander L, Gruber AD, Suttorp N, Seeberger PH, Witzenrath M. Eine synthetische S. pneumoniae Oligosaccharid-Konjugatvakzine schützt Mäuse vor Pneumonie. Pneumologie 2014. [DOI: 10.1055/s-0033-1363136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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12
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Pereira CL, Demarco FF, Cenci MS, Osinaga PWR, Piovesan EM. Flexural strength of composites: influences of polyethylene fiber reinforcement and type of composite. Clin Oral Investig 2003; 7:116-9. [PMID: 12690535 DOI: 10.1007/s00784-003-0198-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2002] [Accepted: 02/03/2003] [Indexed: 10/26/2022]
Abstract
MAIN PROBLEM The microfill veneering of hybrid composite restorations has been indicated to improve esthetics. Also, polyethylene fiber reinforcement has been proposed for use in composite restorations in high-stress clinical situations. However, minimal information in the literature addresses the influence of such combinations on the resistance to fracture. The purpose of this study was to investigate the flexural strength of two composites, a microfill and a hybrid, the effect of their combination, and the influence of polyethylene fiber reinforcement. MATERIALS AND METHODS Twenty-eight specimens were prepared using a standard metallic mold (20x2x2 mm) and divided into groups of seven each: Filtek Z-250 (3M ESPE, St. Paul, Minn., USA) (group I), Filtek A-110 (3M ESPE) (group II), Filtek Z-250 combined with Filtek A-110 (group III), and Filtek Z-250 combined with polyethylene fiber (Ribbond, Seattle, Wash., USA) (group IV). The specimens were stress-loaded to fracture in a three-point bending device according to International Standardization Organization (ISO) 4049. RESULTS Data were analyzed using analysis of variance and Tukey's test at a 0.05 level of significance. No statistically significant differences were observed between groups I and IV. Group II, however, exhibited statistically lower resistance to fracture than the other groups. Group III presented intermediate results, showing statistically higher fracture resistance than group II but lower than group I. CONCLUSIONS With the methodology employed, microfill composite presented the lowest flexural strength, but its association with hybrid composite increased the resistance to fracture. The combination of polyethylene fiber and hybrid composite did not present higher flexural strength than hybrid composite alone.
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Affiliation(s)
- C L Pereira
- Department of Restorative Dentistry, College of Dentistry, Federal University of Pelotas, 457 Gonçalves Chaves Street, Pelotas, RS, Brazil
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Terra AP, Silva-Vergara ML, Gomes RA, Pereira CL, Simpson AJ, Caballero OL. [Monitoring AIDS patients for the development of cytomegalovirus (CMV) disease using multiplex PCR]. Rev Soc Bras Med Trop 2000; 33:583-9. [PMID: 11175589 DOI: 10.1590/s0037-86822000000600010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [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: 11/21/2022] Open
Abstract
The human cytomegalovirus is an important pathogen in patients infected with the human immunodeficiency virus (HIV). The CMV viral load seems to be predictor of the development of the CMV disease in these patients. We used a multiplex PCR protocol that also provides quantitative information in those samples from which a single band is amplified and contains fewer viral genomes than those from which both targets are amplified. Monthly blood samples were collected from 270 AIDS patients. From twenty patients, two CMV targets were amplified three or more consecutive times and these patients developed CMV related disease during the study. In contrast, patients who did not result positive for both viral targets, for three or more consecutive times, or who had alternating positive and negative samples during the follow up did not present CMV related disease. The results suggest that the PCR multiplex can be used for the identification of HIV positive patients with higher risk of development of CMV disease.
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Affiliation(s)
- A P Terra
- Disciplina de Microbiologia, Faculdade de Medicina do Triângulo Mineiro, 38080-015 Uberaba, MG, Brazil.
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Camargos PA, Almeida MS, Filho GL, Batista KW, Carvalho AG, Pereira CL. Blood stained cerebrospinal fluid responsible for false positive reactions of latex particle agglutination tests. J Clin Pathol 1994; 47:1116-7. [PMID: 7876387 PMCID: PMC502206 DOI: 10.1136/jcp.47.12.1116] [Citation(s) in RCA: 5] [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: 01/27/2023]
Abstract
The accuracy of the latex particle agglutination test (LPAT) was assessed in blood stained cerebrospinal fluid (CSF) specimens from 166 paediatric patients, aged from three months to 13 years. A commercial LPAT kit was used to detect Haemophilus influenzae type b, Streptococcus pneumoniae, and Neisseria meningitidis A, B, and C soluble antigens. Culture of CSF specimens was used as the standard and all laboratory procedures were performed blind. The mean CSF erythrocyte count was 66,406 cells/mm3 in the cases and 11,560 cells/mm3 in the controls. The sensitivity and the specificity of LPAT were 83.8 and 94.0%, respectively, suggesting that LPAT is a useful diagnostic tool even in blood stained CSF specimens.
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Affiliation(s)
- P A Camargos
- Department of Pediatrics, School of Medicine, University of Minas Gerais, Brasil
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Pereira CL. [Attachments: the Ney-Chayes technic]. Rev Assoc Paul Cir Dent 1969; 23:134-40. [PMID: 4902472] [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: 01/12/2023]
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