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Ocmant A, Roisin S, Mathieu D, Brauner J, De Leener F. Long-Term Dynamic of Anti-TrimericS and Anti-RBD Antibodies in Naive and COVID-19 Recovered mRNA-1273 Vaccine Recipients. Lab Med 2022:6885749. [DOI: 10.1093/labmed/lmac127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Abstract
Objective
Patients and physicians are increasingly requesting their clinical laboratory to provide SARS-CoV-2 serology interpretation. Our study aimed to assess the evolution of SARS-CoV-2 antibodies in Moderna-vaccinated health care workers.
Methods
We analyzed the evolution of mRNA-1273 (Moderna)–elicited antibodies by 2 high-throughput assays, TrimericS IgG (Diasorin) and SARS-CoV-2 IgG-II (Abbott).
Results
After the first injection, the COVID-19–recovered vaccinees showed a serological response as strong as that observed 1 month after the second injection in participants without COVID-19 history. Although remaining above the positivity thresholds, the TrimericS immunoglobulin G (IgG) and anti-RBD (receptor-binding domain) IgG levels fell considerably between 1 and 7 months postvaccination, dropping to 10.6% and 13% for the COVID-19 recovered subgroup and to 11.7% and 9.3% for the COVID-19 naive subgroup.
Conclusion
Regardless of the test used, a decrease in circulating anti-SARS-CoV-2 IgG levels should be expected a few months after vaccination. As this decline does not preclude the efficacy of immune response, caution is necessary when interpretating postvaccination serological data.
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Affiliation(s)
- Annick Ocmant
- Department of Laboratory Medicine, Centre Hospitalier Universitaire (CHU) de Tivoli , La Louvière , Belgium
| | - Sandrine Roisin
- Department of Laboratory Medicine, Centre Hospitalier Universitaire (CHU) de Tivoli , La Louvière , Belgium
| | - Delphine Mathieu
- Department of Infectious Diseases, Centre Hospitalier Universitaire (CHU) de Tivoli , La Louvière Belgium
| | - Jonathan Brauner
- Department of Laboratory Medicine, Centre Hospitalier Universitaire (CHU) de Tivoli , La Louvière , Belgium
| | - Frédéric De Leener
- Department of Internal Medicine, Centre Hospitalier Universitaire (CHU) de Tivoli , La Louvière Belgium
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Fattorutto M, Bouckaert Y, Brauner J, Franck S, Bouton F, Heuse D, Bouckaert C, Bruyneel A. Pragmatic study of a thromboprophylaxis algorithm in critically ill patients with SARS-COV-2 infection. J Thromb Thrombolysis 2022; 53:58-66. [PMID: 34173169 PMCID: PMC8233177 DOI: 10.1007/s11239-021-02514-3] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/16/2021] [Indexed: 01/08/2023]
Abstract
The optimal thromboprophylactic strategy for patients affected by Coronavirus disease 2019 (COVID-19) has been debated among experts. This study evaluated the safety and efficacy of a thromboprophylaxis algorithm. This was a retrospective, single-center study in critically ill patients admitted to the intensive care unit (University affiliated Hospital) for acute respiratory failure due to Severe Acute Respiratory Syndrome-Coronavirus 2 (SARS-CoV-2). From March 16 to April 9, 2020, thromboprophylaxis was adjusted according to weight (control group, n = 19) and after this date, thromboprophylaxis depended on an algorithm based on thrombotic and hemorrhagic risk factors (protocol group, n = 13). With regard to safety (number of major bleeding events and blood transfusions), the groups were not significantly different. With regard to efficacy, the number of thrombotic events decreased from 37 to 0%, p = 0.025 after implementation of the algorithm. Also, peak fibrinogen dropped from 8.6 (7.2-9.3) to 6.5 (4.6-8.4) g/L, p = 0.041 and D-dimers from 2194 (1464-3763) to 1486 (900-2582) ng/mL, p = 0.0001. In addition, length of stay declined from 19 (10-31) to 5 (3-19) days, p = 0.009. In conclusion, a tailored thromboprophylaxis algorithm (risk stratification based on clinical parameters and biological markers) reduce thrombotic phenomena in critically ill COVID-19 patients without increasing major bleeding.
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Affiliation(s)
- Maurizio Fattorutto
- Department of Anesthesiology, Centre Hospitalier Universitaire Tivoli, Avenue Max Buset 34, 7100, La Louvière, Belgium.
| | - Yves Bouckaert
- Intensive Care Unit, Centre Hospitalier Universitaire Tivoli, La Louvière, Belgium
| | - Jonathan Brauner
- Department of Clinical Biology/Blood Bank, Centre Hospitalier Universitaire Tivoli, La Louvière, Belgium
| | - Stéphane Franck
- Intensive Care Unit, Centre Hospitalier Universitaire Tivoli, La Louvière, Belgium
| | - Fabrice Bouton
- Intensive Care Unit, Centre Hospitalier Universitaire Tivoli, La Louvière, Belgium
| | - Danielle Heuse
- Intensive Care Unit, Centre Hospitalier Universitaire Tivoli, La Louvière, Belgium
| | | | - Arnaud Bruyneel
- Intensive Care Unit, Centre Hospitalier Universitaire Tivoli, La Louvière, Belgium
- School of Public Health, Université Libre Bruxelles, Brussels, Belgium
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Moerman A, Vernelen K, China B, Capron A, Bossche DVD, Mariën J, Ariën KK, Van Acker J, Delforge ML, Reynders M, Boel A, Depypere M, Van Gasse N, Vijgen S, Brauner J, Dujardin B, Padalko E. Importance of anti-SARS-CoV-2 assay antigenic composition as revealed by the results of the Belgian external quality assessment (EQA) scheme. Diagn Microbiol Infect Dis 2021; 102:115561. [PMID: 34773801 PMCID: PMC8503966 DOI: 10.1016/j.diagmicrobio.2021.115561] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 09/16/2021] [Accepted: 09/23/2021] [Indexed: 11/24/2022]
Abstract
We report on sample IS/17575 since it generated highly divergent results in the Belgian SARS-CoV-2 serology external quality assessment scheme. Sample IS/17575 was serum originating from a 30 years old male patient. 124 diagnostic laboratories analysed this sample. A total of 168 results was returned (including 5 doubles). Overall, 38 were positive. All tests against S1 were positive except the Euroimmun IgG ELISA and the Ortho clinical Diagnostics VITROS IgG CLIA. All tests against S1/S2 (Liaison, Diasorin) resulted in a signal above cutoff. Assays against RBD, mostly generate a negative result. An exception are the Wantai SARS-CoV-2 ELISA's. All tests targeting N protein were negative. The survey shows, when >6 months post-infection, assays targeting at least S1, and preferably S1 combined with S2, are the most sensitive. This finding accentuates the necessity of external quality assessment schedules and importance of antigenic composition of serologic SARS-CoV-2 assays.
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Affiliation(s)
- Alena Moerman
- Laboratory of Medical Microbiology, Ghent University Hospital, Ghent, Belgium.
| | - Kris Vernelen
- Experts Committee EQA Infectious serology, Quality of Laboratories, Sciensano, Brussels, Belgium; Quality of Laboratories, Sciensano, Brussels, Belgium
| | - Bernard China
- Experts Committee EQA Infectious serology, Quality of Laboratories, Sciensano, Brussels, Belgium; Quality of Laboratories, Sciensano, Brussels, Belgium
| | - Arnaud Capron
- Experts Committee EQA Infectious serology, Quality of Laboratories, Sciensano, Brussels, Belgium; Quality of Laboratories, Sciensano, Brussels, Belgium
| | - Dorien Van Den Bossche
- Experts Committee EQA Infectious serology, Quality of Laboratories, Sciensano, Brussels, Belgium; Institute of Tropical Medicine, Antwerp, Belgium
| | | | - Kevin K Ariën
- Institute of Tropical Medicine, Antwerp, Belgium; University of Antwerp, Antwerp, Belgium
| | - Jos Van Acker
- Experts Committee EQA Infectious serology, Quality of Laboratories, Sciensano, Brussels, Belgium; Laboratory of Clinical Microbiology, AZ Sint-Lucas, Ghent, Belgium
| | - Marie-Luce Delforge
- Experts Committee EQA Infectious serology, Quality of Laboratories, Sciensano, Brussels, Belgium; CUB-Hôpital Erasme, ULB, Brussels, Belgium
| | - Marijke Reynders
- Experts Committee EQA Infectious serology, Quality of Laboratories, Sciensano, Brussels, Belgium; AZ St. Jan, Bruges-Ostend, Belgium
| | - An Boel
- Experts Committee EQA Infectious serology, Quality of Laboratories, Sciensano, Brussels, Belgium; Department of Medical Microbiology, OLVZ Aalst, Aalst, Belgium
| | - Melissa Depypere
- Experts Committee EQA Infectious serology, Quality of Laboratories, Sciensano, Brussels, Belgium; Department of Laboratory Medicine, University Hospitals Leuven, Leuven, Belgium
| | - Natasja Van Gasse
- Experts Committee EQA Infectious serology, Quality of Laboratories, Sciensano, Brussels, Belgium; Hospital Network Antwerp, Antwerp, Belgium
| | - Sara Vijgen
- Experts Committee EQA Infectious serology, Quality of Laboratories, Sciensano, Brussels, Belgium; Department of Laboratory Medicine, Jessa Hospital, Hasselt, Belgium
| | - Jonathan Brauner
- Experts Committee EQA Infectious serology, Quality of Laboratories, Sciensano, Brussels, Belgium; University Centre Tivoli, La Louvière, Belgium
| | - Barbara Dujardin
- Experts Committee EQA Infectious serology, Quality of Laboratories, Sciensano, Brussels, Belgium; University Centre Tivoli, La Louvière, Belgium
| | - Elizaveta Padalko
- Laboratory of Medical Microbiology, Ghent University Hospital, Ghent, Belgium; Experts Committee EQA Infectious serology, Quality of Laboratories, Sciensano, Brussels, Belgium
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Ocmant A, Roisin S, De Meuter R, Brauner J. Clinical performance of the Advia Centaur anti-SARS-CoV-2 chemiluminescent immunoassay related to antibody kinetics. J Med Virol 2021; 93:2583-2584. [PMID: 33448403 PMCID: PMC8014508 DOI: 10.1002/jmv.26800] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 11/07/2020] [Accepted: 01/05/2021] [Indexed: 12/03/2022]
Affiliation(s)
- Annick Ocmant
- Department of Laboratory Medicine, Centre Hospitalier Universitaire (CHU) de Tivoli, La Louvière, Belgium
| | - Sandrine Roisin
- Department of Laboratory Medicine, Centre Hospitalier Universitaire (CHU) de Tivoli, La Louvière, Belgium
| | - Régis De Meuter
- Department of Laboratory Medicine, Centre Hospitalier Universitaire (CHU) de Tivoli, La Louvière, Belgium
| | - Jonathan Brauner
- Department of Laboratory Medicine, Centre Hospitalier Universitaire (CHU) de Tivoli, La Louvière, Belgium
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Favresse J, Brauner J, Bodart N, Vigneron A, Roisin S, Melchionda S, Douxfils J, Ocmant A. An original multiplex method to assess five different SARS-CoV-2 antibodies. Clin Chem Lab Med 2020; 59:971-978. [PMID: 33554567 DOI: 10.1515/cclm-2020-1652] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Accepted: 12/01/2020] [Indexed: 12/27/2022]
Abstract
OBJECTIVES Accurate SARS-CoV-2 serological assays are urgently needed to help diagnose infection, determine past exposure of populations and assess the response to future vaccines. The study aims at assessing the performance of the multiplex D-tek COVIDOT 5 IgG assay for the detection of SARS-CoV-2 IgG antibodies (N, S1+S2, S1, S2 and RBD). METHODS Sensitivity and dynamic trend to seropositivity were evaluated in 218 samples obtained from 46 rRT-PCR confirmed COVID-19 patients. Non-SARS-CoV-2 sera (n=118) collected before the COVID-19 pandemic with a potential cross-reaction to the SARS-CoV-2 immunoassay were included in the specificity analysis. RESULTS A gradual dynamic trend since symptom onset was observed for all IgG antibodies. Sensitivities before day 14 were suboptimal. At ≥21 days, sensitivities reached 100% (93.4-100%) for N, S1+S2, S2 and RBD-directed IgG and 96.3% (87.3-99.6%) for S1-directed IgG. In 42 out of 46 patients (91.3%), all five antibodies were detected at ≥14 days. The four remaining patients had between 2 and 4 positive antibodies at their respective maximal follow-up period. The specificity was 100 % for S1+S2, S2 and RBD, 98.3% for N and 92.4% (86.0-96.5%) for S1-directed IgG. The combined use of antigens increases the early sensitivity whilst enforcing high specificity. CONCLUSIONS Sensitivities at ≥21 days and specificities were excellent, especially for N, S1+S2, S2 and RBD-directed IgG. Caution is however required when interpreting single S1-directed reactivities. Using a multiplex assay complies with the orthogonal testing algorithm of the CDC and allows a better and critical interpretation of the serological status of a patient.
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Affiliation(s)
- Julien Favresse
- Department of Laboratory Medicine, Clinique Saint-Luc Bouge, Namur, Belgium
- Department of Pharmacy, Namur Research Institute for Lifes Sciences, University of Namur, Namur, Belgium
| | - Jonathan Brauner
- Department of Laboratory Medicine, CHU Tivoli, La Louvière, Belgium
| | | | | | - Sandrine Roisin
- Department of Laboratory Medicine, CHU Tivoli, La Louvière, Belgium
| | | | - Jonathan Douxfils
- Department of Pharmacy, Namur Research Institute for Lifes Sciences, University of Namur, Namur, Belgium
- Qualiblood sa, Namur, Belgium
| | - Annick Ocmant
- Department of Laboratory Medicine, CHU Tivoli, La Louvière, Belgium
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Agorku D, Brauner J, Evaristo C, Siemer R, Langhammer A, Dose C, Rawashdeh WA, Bosio A, Richter A, Hardt O. PO-390 A workflow for optimised isolation and analysis of tumour infiltrating immune subpopulations. ESMO Open 2018. [DOI: 10.1136/esmoopen-2018-eacr25.902] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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Lecordier L, Uzureau P, Tebabi P, Brauner J, Benghiat FS, Vanhollebeke B, Pays E. Adaptation of Trypanosoma rhodesiense to hypohaptoglobinaemic serum requires transcription of the APOL1 resistance gene in a RNA polymerase I locus. Mol Microbiol 2015; 97:397-407. [PMID: 25899052 DOI: 10.1111/mmi.13036] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/17/2015] [Indexed: 02/02/2023]
Abstract
Human apolipoprotein L1 (APOL1) kills African trypanosomes except Trypanosoma rhodesiense and Trypanosoma gambiense, the parasites causing sleeping sickness. APOL1 uptake into trypanosomes is favoured by its association with the haptoglobin-related protein-haemoglobin complex, which binds to the parasite surface receptor for haptoglobin-haemoglobin. As haptoglobin-haemoglobin can saturate the receptor, APOL1 uptake is increased in haptoglobin-poor (hypohaptoglobinaemic) serum (HyHS). While T. rhodesiense resists APOL1 by RNA polymerase I (pol-I)-mediated expression of the serum resistance-associated (SRA) protein, T. gambiense resists by pol-II-mediated expression of the T. gambiense-specific glycoprotein (TgsGP). Moreover, in T. gambiense resistance to HyHS is linked to haptoglobin-haemoglobin receptor inactivation by mutation. We report that unlike T. gambiense, T. rhodesiense possesses a functional haptoglobin-haemoglobin receptor, and that like T. gambiense experimentally provided with active receptor, this parasite is killed in HyHS because of receptor-mediated APOL1 uptake. However, T. rhodesiense could adapt to low haptoglobin by increasing transcription of SRA. When assayed in Trypanosoma brucei, resistance to HyHS occurred with pol-I-, but not with pol-II-mediated SRA expression. Similarly, T. gambiense provided with active receptor acquired resistance to HyHS only when TgsGP was moved to a pol-I locus. Thus, transcription by pol-I favours adaptive gene regulation, explaining the presence of SRA in a pol-I locus.
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Affiliation(s)
- Laurence Lecordier
- Laboratory of Molecular Parasitology, IBMM, Université Libre de Bruxelles, 12, rue des Profs Jeener et Brachet, B6041, Gosselies, Belgium
| | - Pierrick Uzureau
- Laboratoire de Médecine Expérimentale (ULB222), Hôpital André Vésale, Université Libre de Bruxelles, 706, route de Gozée, B6110, Montigny le Tilleul, Belgium
| | - Patricia Tebabi
- Laboratory of Molecular Parasitology, IBMM, Université Libre de Bruxelles, 12, rue des Profs Jeener et Brachet, B6041, Gosselies, Belgium
| | - Jonathan Brauner
- Department of Clinical Chemistry, Hôpital Erasme, Université Libre de Bruxelles, 808, route de Lennik, B1070, Brussels, Belgium
| | - Fleur Samantha Benghiat
- Department of Hematology, Hôpital Erasme, Université Libre de Bruxelles, 808, route de Lennik, B1070, Brussels, Belgium
| | - Benoit Vanhollebeke
- Laboratory of Molecular Parasitology, IBMM, Université Libre de Bruxelles, 12, rue des Profs Jeener et Brachet, B6041, Gosselies, Belgium
| | - Etienne Pays
- Laboratory of Molecular Parasitology, IBMM, Université Libre de Bruxelles, 12, rue des Profs Jeener et Brachet, B6041, Gosselies, Belgium.,Walloon Excellence in Life Sciences and Biotechnology (WELBIO), Liège, Belgium
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Jürgens J, Schulz N, Seidensticker M, Wybranski C, Streit S, Brauner J, Kyriakou Y, Ricke J, Dudeck O. Zeitaufgelöste Perfusionsbildgebung an der Angioanlage: Vergleich einer neuen Flachdetektor-Anwendung zur CT-Perfusion am VX2 Tumormodell im Kaninchen. ROFO-FORTSCHR RONTG 2014. [DOI: 10.1055/s-0034-1372763] [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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Seidensticker M, Wybranski C, Streit S, Brauner J, Schulz N, Jürgens J, Seidensticker R, Ricke J, Dudeck O. Transarterielle Chemoembolisation mit Sorafenib und Lipiodol (SORATACE) – präklinische Evaluierung anhand von VX-2 Tumoren der Leber im Kaninchenmodell. ROFO-FORTSCHR RONTG 2014. [DOI: 10.1055/s-0034-1372761] [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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Wolff F, Debaugnies F, Rozen L, Willems D, Brohet F, Brauner J, Stordeur P. Assessment of the diagnostic performances of IgA heavy and light chain pairs in patients with IgA monoclonal gammopathy. Clin Biochem 2013; 46:79-84. [DOI: 10.1016/j.clinbiochem.2012.09.023] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2012] [Revised: 09/24/2012] [Accepted: 09/26/2012] [Indexed: 11/28/2022]
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Vergison A, Machado AN, Deplano A, Doyen M, Brauner J, Nonhoff C, de Mendonça R, Mascart G, Denis O. Heterogeneity of disease and clones of community-onset methicillin-resistant Staphylococcus aureus in children attending a paediatric hospital in Belgium. Clin Microbiol Infect 2012; 18:769-77. [DOI: 10.1111/j.1469-0691.2011.03637.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Serroukh Y, Baudoux T, Layeux B, Brauner J, Willems N, Lemoine C, Legrand F, Goldberg F, Frenkel C, Lalmand M, Etienne A, Goldberg O. [Summary of the 6th Conference of postgraduate physicians of the Medical School of the ULB]. Rev Med Brux 2011; 32:102-107. [PMID: 21688595] [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: 05/30/2023]
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Oliveira VO, Filho ER, Brauner J, Vieira SR. Is Simplified Acute Physiology Score 3 better than APACHE II to predict mortality in transplanted critical patients? Crit Care 2009. [PMCID: PMC4084392 DOI: 10.1186/cc7670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
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Condessa R, Vieira S, Brauner J, Saul A, Silva A, Baptista M, Borges L, Moura M, Alves M, Kutchak F, Biz L. Is the threshold useful in accelerating weaning from mechanical ventilation? Crit Care 2008. [PMCID: PMC4088700 DOI: 10.1186/cc6550] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Brauner J. [Speech on the occasion of return of the academic year--September 2007]]. Rev Med Brux 2007; 28:538-540. [PMID: 18265815] [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: 05/25/2023]
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Vieira S, Condessa R, Brauner J, Saul A, Silva A, Silva M, Borges L, Moura M, Alves M, Kutchak F, Biz L, Dieterich C. Is threshold useful in accelerating weaning from mechanical ventilation? Crit Care 2007. [PMCID: PMC4095224 DOI: 10.1186/cc5330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023] Open
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Fialkow L, Sens R, Sehn L, Cardoso R, Wolmeister A, Milani A, Bozzetti M, Vieira S, Brauner J, Guntzel A, Ficanha M, Machado G. Intensive care unit patients on mechanical ventilation at a university hospital in southern Brazil: characteristics, mortality, frequency, and mortality risk factors. Crit Care 2007. [PMCID: PMC4095217 DOI: 10.1186/cc5323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Rech T, Vieira S, Brauner J, Scalco R, Nagel F. Crit Care 2006; 10:P466. [DOI: 10.1186/cc4813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Fialkow L, Vieira S, Brauner J, Costa C, Raymundi M, Bartz M, Valiati A, Cioffi A, Hauber F, Pereira L, Guntzel A, Schulte F, Benvegnu G, Bozzetti M. Crit Care 2006; 10:P420. [DOI: 10.1186/cc4767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Saar D, Brauner J, Farber H, Petrucci S. Dielectric relaxation of some 1:1 electrolytes in tetrahydrofuran and diethyl carbonate. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100506a018] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [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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Wharton CM, Grafman J, Flitman SS, Hansen EK, Brauner J, Marks A, Honda M. Toward neuroanatomical models of analogy: a positron emission tomography study of analogical mapping. Cogn Psychol 2000; 40:173-97. [PMID: 10790322 DOI: 10.1006/cogp.1999.0726] [Citation(s) in RCA: 74] [Impact Index Per Article: 3.1] [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: 11/22/2022]
Abstract
Several brain regions associated with analogical mapping were identified using (15)O-positron emission tomography with 12 normal, high intelligence adults. Each trial presented during scanning consisted of a source picture of colored geometric shapes, a brief delay, and a target picture of colored geometric shapes. Analogous pictures did not share similar geometric shapes but did share the same system of abstract visuospatial relations. Participants judged whether each source-target pairing was analogous (analogy condition) or identical (literal condition). The results of the analogy-literal comparison showed activation in the dorsomedial frontal cortex and in the left hemisphere; the inferior, middle, and medial frontal cortices; the parietal cortex; and the superior occipital cortex. Based on these results as well as evidence from relevant cognitive neuroscience studies of reasoning and of executive working memory, we hypothesize that analogical mapping is mediated by the left prefrontal and inferior parietal cortices.
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Affiliation(s)
- C M Wharton
- Cognitive Neuroscience Section, National Institutes of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892-1440, USA
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Brauner J, Pawlowska I, Pniewski T. [Value of biological tests in the diagnosis of tuberculosis]. Gruzlica 1974; 42:1167-70. [PMID: 4215701] [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: 01/09/2023]
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Pawlowska I, Czerwiński Z, Brauner J. [Examination of sewers and surface waters for acid-fast bacilli in the lagiewniki area]. Gruzlica 1972; 40:937-41. [PMID: 5085749] [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: 01/13/2023]
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Rechnitz G, Brauner J. Application of cationic-sensitive glass electrodes to the study of alkali metal complexes—IThe sodium-malate system. Talanta 1964. [DOI: 10.1016/0039-9140(64)80072-2] [Citation(s) in RCA: 3] [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: 11/15/2022]
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