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de Paula Junior VF, van Tilburg MF, Morais PA, Júnior FFM, Lima EG, Oliveira VTDS, Guedes MIF, Caetano EWS, Freire VN. Quantum Biochemistry and MM-PBSA Description of the ZIKV NS2B-NS3 Protease: Insights into the Binding Interactions beyond the Catalytic Triad Pocket. Int J Mol Sci 2022; 23:ijms231710088. [PMID: 36077486 PMCID: PMC9456192 DOI: 10.3390/ijms231710088] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 08/17/2022] [Accepted: 08/22/2022] [Indexed: 11/16/2022] Open
Abstract
The Zika virus protease NS2B-NS3 has a binding site formed with the participation of a H51-D75-S135 triad presenting two forms, active and inactive. Studies suggest that the inactive conformation is a good target for the design of inhibitors. In this paper, we evaluated the co-crystallized structures of the protease with the inhibitors benzoic acid (5YOD) and benzimidazole-1-ylmethanol (5H4I). We applied a protocol consisting of two steps: first, classical molecular mechanics energy minimization followed by classical molecular dynamics were performed, obtaining stabilized molecular geometries; second, the optimized/relaxed geometries were used in quantum biochemistry and molecular mechanics/Poisson-Boltzmann surface area (MM-PBSA) calculations to estimate the ligand interactions with each amino acid residue of the binding pocket. We show that the quantum-level results identified essential residues for the stabilization of the 5YOD and 5H4I complexes after classical energy minimization, matching previously published experimental data. The same success, however, was not observed for the MM-PBSA simulations. The application of quantum biochemistry methods seems to be more promising for the design of novel inhibitors acting on NS2B-NS3.
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Affiliation(s)
- Valdir Ferreira de Paula Junior
- Biotechnology & Molecular Biology Laboratory, State University of Ceará, Fortaleza 60714-903, Brazil
- Correspondence: ; Tel.: +55-859-8541-8255
| | | | - Pablo Abreu Morais
- Federal Institute of Education, Science and Technology of Ceará, Campus Horizonte, Horizonte 62884-105, Brazil
| | - Francisco Franciné Maia Júnior
- Departamento de Ciências Naturais, Matemática e Estatística, Universidade Federal Rural do Semi-Árido, Mossoró 59625-900, Brazil
| | - Elza Gadelha Lima
- Laboratório Central de Saúde Pública do Ceará (LACEN), Fortaleza 60120-002, Brazil
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2
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Boros GAB, Hueb W, Rezende PC, Ribas FF, Dallazen AR, Ribeiro MOL, Garcia RMR, Garzillo CL, Lima EG, Morais T, Nomura CH, Rochitte CE, Serrano Junior CV, Ramires JAF, Kalil Filho R. P598T1 mapping and myocardial extracellular volume assessed by cardiac magnetic resonance in diabetic patients with stable coronary artery disease. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz747.0207] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
T1 mapping is a quantitative technique of cardiac magnetic resonance (CMR) increasingly used for characterization of the myocardium. Type 2 diabetes mellitus (T2DM) may impact myocardial tissue structure, however studies that assessed this association using non-invasive methods have conflicting results.
Purpose
We sought to compare the tissue characteristics of the non-infarcted myocardium of patients with and without diabetes with multivessel CAD.
Methods
Patients with stable multivessel CAD and preserved left ventricular ejection fraction (LVEF), included in the MASS V trial, underwent contrast-enhanced CMR before revascularization procedures. Patients were stratified according to the T2DM diagnosis at baseline. Values of myocardial native T1, post-contrast T1 and extracellular volume fraction (ECV) were compared between diabetic and non-diabetic patients. Only myocardial tissue without late gadolinium enhancement were assessed.
Results
Of 155 patients studied, 67 (43%) were diabetic and 88 (57%) non-diabetic. Baseline characteristics were similiar between groups (age 70±10 vs 69±11; 69% vs 68% males; LVEF 65±13 vs 67±9). Mean Syntax score was 21.2±8.5 and 20.4±8.5 (p=0.52) in diabetic and non-diabetic, respectively. Myocardial native T1 values showed no diference in diabetic and non-diabetic (1013±67.9 vs 1015±61.4, p=0.72). However, in diabetic patients values of post-contrast T1 were significantly lower (482.2±43.8 vs 499.4±47.2, p=0.024) and ECV were higher (29.62±6.61 vs 27.08. ± 4.22, p=0.004). Multivariable analyses adjusted for age, sex, BMI, hypertension and Syntax score showed no differences in the results.
Figure1
Conclusion
In this study, T2DM was associated with higher ECV and lower post-contrast T1 values in the myocardial tissue. These findings suggest an increase in the myocardial intersticial matrix in patients with diabetes and stable multivessel CAD.
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Affiliation(s)
- G A B Boros
- Instituto do Coracao InCor Hospital das Clinicas Faculdade de Medicina Universidade de Sao Paulo SP, Sao Paulo, Brazil
| | - W Hueb
- Instituto do Coracao InCor Hospital das Clinicas Faculdade de Medicina Universidade de Sao Paulo SP, Sao Paulo, Brazil
| | - P C Rezende
- Instituto do Coracao InCor Hospital das Clinicas Faculdade de Medicina Universidade de Sao Paulo SP, Sao Paulo, Brazil
| | - F F Ribas
- Instituto do Coracao InCor Hospital das Clinicas Faculdade de Medicina Universidade de Sao Paulo SP, Sao Paulo, Brazil
| | - A R Dallazen
- Instituto do Coracao InCor Hospital das Clinicas Faculdade de Medicina Universidade de Sao Paulo SP, Sao Paulo, Brazil
| | - M O L Ribeiro
- Instituto do Coracao InCor Hospital das Clinicas Faculdade de Medicina Universidade de Sao Paulo SP, Sao Paulo, Brazil
| | - R M R Garcia
- Instituto do Coracao InCor Hospital das Clinicas Faculdade de Medicina Universidade de Sao Paulo SP, Sao Paulo, Brazil
| | - C L Garzillo
- Instituto do Coracao InCor Hospital das Clinicas Faculdade de Medicina Universidade de Sao Paulo SP, Sao Paulo, Brazil
| | - E G Lima
- Instituto do Coracao InCor Hospital das Clinicas Faculdade de Medicina Universidade de Sao Paulo SP, Sao Paulo, Brazil
| | - T Morais
- Instituto do Coracao InCor Hospital das Clinicas Faculdade de Medicina Universidade de Sao Paulo SP, Sao Paulo, Brazil
| | - C H Nomura
- Instituto do Coracao InCor Hospital das Clinicas Faculdade de Medicina Universidade de Sao Paulo SP, Sao Paulo, Brazil
| | - C E Rochitte
- Instituto do Coracao InCor Hospital das Clinicas Faculdade de Medicina Universidade de Sao Paulo SP, Sao Paulo, Brazil
| | - C V Serrano Junior
- Instituto do Coracao InCor Hospital das Clinicas Faculdade de Medicina Universidade de Sao Paulo SP, Sao Paulo, Brazil
| | - J A F Ramires
- Instituto do Coracao InCor Hospital das Clinicas Faculdade de Medicina Universidade de Sao Paulo SP, Sao Paulo, Brazil
| | - R Kalil Filho
- Instituto do Coracao InCor Hospital das Clinicas Faculdade de Medicina Universidade de Sao Paulo SP, Sao Paulo, Brazil
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3
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Dallazen AR, Hueb W, Rezende PC, Boros GAB, Ribas FF, Nomura CH, Rochitte CE, Morais T, Lima EG, Martins EB, Carvalho GF, Ribeiro MOL, Serrano Junior CV, Ramires JAF, Kalil Filho R. P1832Myocardial injury assessed by T1 mapping after on-pump and off-pump coronary artery bypass grafting. a pre-specified analysis of mass V trial. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.0584] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Myocardial structural damage may occur during coronary artery bypass grafting (CABG) surgery and is identified by the significant release of cardiac biomarkers. However, the evidence of these structural myocardial changes after CABG by current imaging methods remains unknown. To evaluate myocardial structure, we used the T1 mapping of cardiac magnetic resonance (CMR) before and after on-pump and off-pump CABG.
Methods
Patients with multivessel coronary artery disease and preserved ventricular function were included and underwent on or off-pump CABG. CMR and T1 mapping were performed using the MOLLI technique (modified Look-Locker inversion-recovery). Values of native T1 and extracellular volume fraction (ECV) were compared before and after on and off-pump procedures.
Results
Of 110 eligible patients, 34 were excluded due to the presence of new late enhancement or edema. Of 76 patients remained, 32 (42%) underwent on-pump (Group A) and 44 (58%) off-pump CABG (Group B). All baseline characteristics were similar between groups, besides the Syntax Score that was higher in Group A (25 × 21, p=0.002). For group A, native T1 before and after procedures was 1013 ms (998–1043) and 1004 ms (793–1048), p=0.19, and ECV was 26.4 (23.9–27.6) and 31.2 (27.6–33.9), p<0.001. For group B, native T1 before and after procedures was 1015 ms (970–1044) and 992 ms (867–1051), p=0.003, and ECV 27.5 (25.3–29.9) and 30.3 (26.5–34.3), p=0.02. The comparison of native T1 difference before and after procedures between groups A and B was not significant (Delta T1 −9.8 (−102 to 51.8) × −25.4 (−119 to 51,2), p=0.87. However, the difference of ECV between groups was statistically significant (ECV Delta 3.8 (2.2 to 7.1) × 1.3 (−1.1 to 4.9), p=0.039, respectively, for groups A and B.
Figure 1
Conclusion
In this sample, T1 mapping identified significant myocardial structural changes in both surgical revascularization procedures. Additionally, a marked myocardial injury generated by ECV changes were observed after on-pump CABG.
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Affiliation(s)
- A R Dallazen
- Instituto do Coracao InCor Hospital das Clinicas Faculdade de Medicina Universidade de Sao Paulo SP, Sao Paulo, Brazil
| | - W Hueb
- Instituto do Coracao InCor Hospital das Clinicas Faculdade de Medicina Universidade de Sao Paulo SP, Sao Paulo, Brazil
| | - P C Rezende
- Instituto do Coracao InCor Hospital das Clinicas Faculdade de Medicina Universidade de Sao Paulo SP, Sao Paulo, Brazil
| | - G A B Boros
- Instituto do Coracao InCor Hospital das Clinicas Faculdade de Medicina Universidade de Sao Paulo SP, Sao Paulo, Brazil
| | - F F Ribas
- Instituto do Coracao InCor Hospital das Clinicas Faculdade de Medicina Universidade de Sao Paulo SP, Sao Paulo, Brazil
| | - C H Nomura
- Instituto do Coracao InCor Hospital das Clinicas Faculdade de Medicina Universidade de Sao Paulo SP, Sao Paulo, Brazil
| | - C E Rochitte
- Instituto do Coracao InCor Hospital das Clinicas Faculdade de Medicina Universidade de Sao Paulo SP, Sao Paulo, Brazil
| | - T Morais
- Instituto do Coracao InCor Hospital das Clinicas Faculdade de Medicina Universidade de Sao Paulo SP, Sao Paulo, Brazil
| | - E G Lima
- Instituto do Coracao InCor Hospital das Clinicas Faculdade de Medicina Universidade de Sao Paulo SP, Sao Paulo, Brazil
| | - E B Martins
- Instituto do Coracao InCor Hospital das Clinicas Faculdade de Medicina Universidade de Sao Paulo SP, Sao Paulo, Brazil
| | - G F Carvalho
- Instituto do Coracao InCor Hospital das Clinicas Faculdade de Medicina Universidade de Sao Paulo SP, Sao Paulo, Brazil
| | - M O L Ribeiro
- Instituto do Coracao InCor Hospital das Clinicas Faculdade de Medicina Universidade de Sao Paulo SP, Sao Paulo, Brazil
| | - C V Serrano Junior
- Instituto do Coracao InCor Hospital das Clinicas Faculdade de Medicina Universidade de Sao Paulo SP, Sao Paulo, Brazil
| | - J A F Ramires
- Instituto do Coracao InCor Hospital das Clinicas Faculdade de Medicina Universidade de Sao Paulo SP, Sao Paulo, Brazil
| | - R Kalil Filho
- Instituto do Coracao InCor Hospital das Clinicas Faculdade de Medicina Universidade de Sao Paulo SP, Sao Paulo, Brazil
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4
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Martins EB, Hueb W, Lima EG, Rezende PC, Garzillo CL, Carvalho GF, Carvalho FPC, Linhares Filho JPP, Batista DV, Silva RR, Boros GAB, Azevedo DFC, Serrano Junior CV, Ramires JAF, Kalil Filho R. P1835Application of SYNTAX score I, II and residual SYNTAX as predictors of long-term clinical outcomes after coronary artery bypass grafting. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.0587] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
The evaluation of coronary disease by SYNTAX score I (SSI) is used to grade coronary complexity. Following SSI, two other scores were developed: SYNTAX score II (SSII) and residual SYNTAX score (rSS). Nevertheless, there is still a lack of evidence about the prognostic significance of these scores among patients undergoing CABG.
Purpose
Our aim was to evaluate the relation of the SSI, SSII and rSS score with outcomes in a long-term follow-up after elective CABG.
Methods
This is a single center, registry-based study. Baseline SSI was calculated from patients undergoing CABG by interventional cardiologists. SSI results were considered as usual: <23, 23–32 and >32. SSII and rSRR were then calculated and categorized in tertiles: <21.4, 21.4–29.4 and >29.4 for SSII and 0, 1–5 and >5 for rSS. Primary outcome was a composite of overall death, myocardial infarction, additional revascularization, or stroke (MACCE).
Results
Data were obtained from 559 patients. Median follow-up was 6 years (IQR: 4.9–9.8) and 170 events were documented. The Kaplan-Meier curves (figure 1) showed significant differences of MACCE in higher SSI, SSII and rSS (p=0.039, 0.033, <0.001 respectively). After multivariate adjustment, rSS, ejection fraction (EF) and age were found to be independent predictors of MACCE (p<0.001, 0.034 and 0.006, respectively).
Figure 1
Conclusion
In this sample SSI, II and residual were associated with the occurrence of events. However, just the rSS remained an independent predictor of MACCE together with age and EF.
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Affiliation(s)
- E B Martins
- Instituto do Coracao InCor Hospital das Clinicas Faculdade de Medicina Universidade de Sao Paulo SP, Sao Paulo, Brazil
| | - W Hueb
- Instituto do Coracao InCor Hospital das Clinicas Faculdade de Medicina Universidade de Sao Paulo SP, Sao Paulo, Brazil
| | - E G Lima
- Instituto do Coracao InCor Hospital das Clinicas Faculdade de Medicina Universidade de Sao Paulo SP, Sao Paulo, Brazil
| | - P C Rezende
- Instituto do Coracao InCor Hospital das Clinicas Faculdade de Medicina Universidade de Sao Paulo SP, Sao Paulo, Brazil
| | - C L Garzillo
- Instituto do Coracao InCor Hospital das Clinicas Faculdade de Medicina Universidade de Sao Paulo SP, Sao Paulo, Brazil
| | - G F Carvalho
- Instituto do Coracao InCor Hospital das Clinicas Faculdade de Medicina Universidade de Sao Paulo SP, Sao Paulo, Brazil
| | - F P C Carvalho
- Instituto do Coracao InCor Hospital das Clinicas Faculdade de Medicina Universidade de Sao Paulo SP, Sao Paulo, Brazil
| | - J P P Linhares Filho
- Instituto do Coracao InCor Hospital das Clinicas Faculdade de Medicina Universidade de Sao Paulo SP, Sao Paulo, Brazil
| | - D V Batista
- Instituto do Coracao InCor Hospital das Clinicas Faculdade de Medicina Universidade de Sao Paulo SP, Sao Paulo, Brazil
| | - R R Silva
- Instituto do Coracao InCor Hospital das Clinicas Faculdade de Medicina Universidade de Sao Paulo SP, Sao Paulo, Brazil
| | - G A B Boros
- Instituto do Coracao InCor Hospital das Clinicas Faculdade de Medicina Universidade de Sao Paulo SP, Sao Paulo, Brazil
| | - D F C Azevedo
- Instituto do Coracao InCor Hospital das Clinicas Faculdade de Medicina Universidade de Sao Paulo SP, Sao Paulo, Brazil
| | - C V Serrano Junior
- Instituto do Coracao InCor Hospital das Clinicas Faculdade de Medicina Universidade de Sao Paulo SP, Sao Paulo, Brazil
| | - J A F Ramires
- Instituto do Coracao InCor Hospital das Clinicas Faculdade de Medicina Universidade de Sao Paulo SP, Sao Paulo, Brazil
| | - R Kalil Filho
- Instituto do Coracao InCor Hospital das Clinicas Faculdade de Medicina Universidade de Sao Paulo SP, Sao Paulo, Brazil
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5
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Scudeler TL, Hueb W, De Soarez PC, Campolina AG, Hueb AC, Rezende PC, Lima EG, Garzillo CL, Ribas FF, Takiuti ME, Ramires JAF, Kalil Filho R. P2657Cost-effectiveness analysis of on-pump and off-pump coronary artery bypass grafting for patients with multivesselcoronary artery disease: a Markov model based on data from the MASS III trial. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p2657] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- T L Scudeler
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - W Hueb
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | | | - A G Campolina
- University of Sao Paulo, Cancer Institute, Sao Paulo, Brazil
| | - A C Hueb
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - P C Rezende
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - E G Lima
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - C L Garzillo
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - F F Ribas
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - M E Takiuti
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - J A F Ramires
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - R Kalil Filho
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
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6
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Batista DV, Hueb W, Linhares Filho JPP, Silva RR, Lima EG, Rezende PC, Martins EB, Garzillo CL, Azevedo DFC, Ramires JAF, Kalil Filho R. 2363Impact of chronic kidney disease on diabetic patients with stable coronary disease undergoing surgery, angioplasty or medical treatment in a ten-year follow-up. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.2363] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- D V Batista
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - W Hueb
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - J P P Linhares Filho
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - R R Silva
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - E G Lima
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - P C Rezende
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - E B Martins
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - C L Garzillo
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - D F C Azevedo
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - J A F Ramires
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - R Kalil Filho
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
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7
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Lima EG, Hueb W, Linhares Filho JPP, Batista DV, Rezende PC, Martins EB, Azevedo DFC, Garzillo CL, Ramires JAF, Kalil Filho R. P3591Very long-term follow-up of diabetic patients with coronary artery disease undergoing angioplasty with conventional and drug-eluting stents. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p3591] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- E G Lima
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - W Hueb
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - J P P Linhares Filho
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - D V Batista
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - P C Rezende
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - E B Martins
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - D F C Azevedo
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - C L Garzillo
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - J A F Ramires
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - R Kalil Filho
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
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8
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Martins EB, Hueb W, Silva RR, Linhares Filho JPP, Batista DV, Ribas FF, Rezende PC, Lima EG, Azevedo DFC, Ramires JAF, Kalil Filho R. P6361SYNTAX score and outcomes after coronary artery bypass grafting: a long-term follow-up analysis. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p6361] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- E B Martins
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - W Hueb
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - R R Silva
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - J P P Linhares Filho
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - D V Batista
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - F F Ribas
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - P C Rezende
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - E G Lima
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - D F C Azevedo
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - J A F Ramires
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - R Kalil Filho
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
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9
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Silva RR, Lima EG, Batista DV, Linhares Filho JPP, Martins EB, Rezende PC, Garzillo CL, Ribas FF, Hueb W, Ramires JAF, Kalil Filho R. P2658Long-term analysis of ventricular functionin patients with stable coronary disease submitted to on-pump or off-pump coronary artery bypass graft in MASS III. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p2658] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- R R Silva
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - E G Lima
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - D V Batista
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - J P P Linhares Filho
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - E B Martins
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - P C Rezende
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - C L Garzillo
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - F F Ribas
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - W Hueb
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - J A F Ramires
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - R Kalil Filho
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
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10
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Linhares Filho JPP, Hueb W, Batista DV, Silva RR, Lima EG, Rezende PC, Martins EB, Garzillo CL, Azevedo DFC, Ramires JAF, Kalil Filho R. P2265Impact of glycated hemoglobin in diabetic patients with coronary artery disease undergoing surgery, angioplasty or clinical treatment in a very long-term follow-up. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p2265] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- J P P Linhares Filho
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - W Hueb
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - D V Batista
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - R R Silva
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - E G Lima
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - P C Rezende
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - E B Martins
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - C L Garzillo
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - D F C Azevedo
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - J A F Ramires
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - R Kalil Filho
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
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11
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Linhares Filho JPP, Hueb W, Batista DV, Silva RR, Lima EG, Rezende PC, Martins EB, Garzillo CL, Azevedo DFC, Ramires JAF, Kalil Filho R. 3270Prognostic evaluation of elevation of cardiac biomarkers after myocardial revascularization. Long-term follow-up of MASS-V trial. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.3270] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- J P P Linhares Filho
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - W Hueb
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - D V Batista
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - R R Silva
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - E G Lima
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - P C Rezende
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - E B Martins
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - C L Garzillo
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - D F C Azevedo
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - J A F Ramires
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
| | - R Kalil Filho
- Heart Institute (InCor) - University of Sao Paulo Clinics Hospital, Sao Paulo, Brazil
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12
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Perdigão ACB, Ramalho ILC, Guedes MIF, Braga DNM, Cavalcanti LPG, Melo MELD, Araújo RMDC, Lima EG, Silva LABD, Araújo LDC, Araújo FMDC. Coinfection with influenza A(H1N1)pdm09 and dengue virus in fatal cases. Mem Inst Oswaldo Cruz 2016; 111:588-91. [PMID: 27598244 PMCID: PMC5027863 DOI: 10.1590/0074-02760160140] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2016] [Accepted: 06/29/2016] [Indexed: 11/21/2022] Open
Abstract
We report on four patients with fatal influenza A(H1N1)pdm09 and dengue virus coinfections. Clinical, necropsy and histopathologic findings presented in all cases were characteristic of influenza-dengue coinfections, and all were laboratory-confirmed for both infections. The possibility of influenza and dengue coinfection should be considered in locations where these two viruses' epidemic periods coincide to avoid fatal outcomes. Dengue is a mosquito-borne viral infection caused by one of the four dengue viruses (DENV-1 to 4). Each of these viruses is capable of causing nonspecific febrile illnesses, classic dengue fever and dengue haemorrhagic fever (Gubler 1998). As a result, dengue is often difficult to diagnose clinically, especially because peak dengue season often coincides with that of other common febrile illnesses in tropical regions (Chacon et al. 2015). In April 2009, a new virus, influenza A/H1N1/pandemic (FluA/H1N1/09pdm), caused a severe outbreak in Mexico. The virus quickly spread throughout the world, and in June 2009, the World Health Organization declared a pandemic (WHO 2010). In Brazil, the first laboratory confirmed case of FluA/H1N1/09pdm was in July 2009 (Pires Neto et al. 2013). The state of Ceará, in Northeast Brazil, is a dengue endemic area. In this state, the virus influenza A(H1N1)pdm09 has circulated since 2009, and through the first half of 2012, 11 deaths caused by the virus were confirmed (Pires Neto et al. 2013). The influenza and dengue seasons in Ceará overlap, which led to diagnostic difficulties. We report four cases of laboratory-confirmed coinfection of deadly influenza A(H1N1)pdm09 with DENV, which occurred during the dengue and influenza season in 2012 and 2013 in Ceará.
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Affiliation(s)
- Anne Carolinne Bezerra Perdigão
- Laboratório Central de Saúde Pública, Setor de Virologia, Fortaleza, CE, Brasil.,Universidade Estadual do Ceará, Rede Nordeste de Biotecnologia, Fortaleza, CE, Brasil.,Centro Universitário Christus, Fortaleza, CE, Brasil
| | - Izabel Letícia Cavalcante Ramalho
- Laboratório Central de Saúde Pública, Setor de Virologia, Fortaleza, CE, Brasil.,Universidade Estadual do Ceará, Rede Nordeste de Biotecnologia, Fortaleza, CE, Brasil
| | | | - Deborah Nunes Melo Braga
- Universidade Federal do Ceará, Fortaleza, CE, Brasil.,Instituto de Prevenção de Câncer, Fortaleza, CE, Brasil
| | | | | | | | - Elza Gadelha Lima
- Laboratório Central de Saúde Pública, Setor de Virologia, Fortaleza, CE, Brasil.,Universidade Estadual do Ceará, Rede Nordeste de Biotecnologia, Fortaleza, CE, Brasil
| | | | | | - Fernanda Montenegro de Carvalho Araújo
- Laboratório Central de Saúde Pública, Setor de Virologia, Fortaleza, CE, Brasil.,Universidade Estadual do Ceará, Rede Nordeste de Biotecnologia, Fortaleza, CE, Brasil
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13
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Lima EG, Lira RC, Jesus ALS, Dhalia R, Freitas AC. Development of a DNA-based vaccine strategy against bovine papillomavirus infection, involving the E5 or L2 gene. Genet Mol Res 2014; 13:1121-6. [PMID: 24634133 DOI: 10.4238/2014.february.20.13] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Papillomaviruses are known to cause tumor lesions, generally benign, in epithelial tissues of diverse organisms; these lesions may progress to cancer under suitable conditions. Bovine papillomavirus (BPV) can cause urinary bladder cancer and cancer of the upper gastrointestinal tract. Furthermore, BPV1 and BPV2 are implicated in the development of tumors in equids. Many studies with animal models clearly demonstrate that DNA vaccines are very effective tools in controlling viral infections, providing strong humoral and cellular immune responses. In this study, we have described the development of two vaccine constructs for the control of diseases caused by BPV. The 1st strategy is prophylactic and is based on the L2 gene; the 2nd is therapeutic and is based on the E5 gene. Vaccine constructs were obtained and evaluated in vitro in mammalian cells. The results show the occurrence of E5 and L2 transcription and viral protein production. These results confirm the functionality of the vaccine constructs in mammalian cells. This is the 1st step in the development of a DNA-based vaccine strategy for the control and/or treatment of diseases caused by BPV.
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Affiliation(s)
- E G Lima
- Laboratório de Estudos Moleculares e Terapia Experimental, Departamento de Genética, Universidade Federal de Pernambuco, Recife, PE, Brasil
| | - R C Lira
- Laboratório de Estudos Moleculares e Terapia Experimental, Departamento de Genética, Universidade Federal de Pernambuco, Recife, PE, Brasil
| | - A L S Jesus
- Laboratório de Estudos Moleculares e Terapia Experimental, Departamento de Genética, Universidade Federal de Pernambuco, Recife, PE, Brasil
| | - R Dhalia
- Laboratório de Virologia e Terapia Experimental, Centro de Pesquisa Aggeu Magalhães, Recife, PE, Brasil
| | - A C Freitas
- Laboratório de Estudos Moleculares e Terapia Experimental, Departamento de Genética, Universidade Federal de Pernambuco, Recife, PE, Brasil
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14
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Bottino MA, Bergoli C, Lima EG, Marocho SMS, Souza RO, Valandro LF. Bonding of Y-TZP to dentin: effects of Y-TZP surface conditioning, resin cement type, and aging. Oper Dent 2013; 39:291-300. [PMID: 24147749 DOI: 10.2341/12-235-l] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
PURPOSE To evaluate the effects of two surface treatments, aging, and two resin cements on shear bond strength between dentin and yttrium-stabilized tetragonal zirconia polycrystal ceramic (Y-TZP). MATERIALS AND METHODS Eighty human molars were embedded in acrylic resin and sectioned 3 mm below the occlusal plane. These teeth and 80 cylindrical Y-TZP specimens (height, 4 mm; diameter, 3.4 mm) were divided into eight groups (n=10) using the following factors: Y-TZP surface treatment (Vi: low-fusing porcelain [vitrification] + hydrofluoric acid etching + silanization or Si: tribochemical silicatization); cementation strategies (PF: Panavia or CC: Clearfil); and storage (nonaging or aging). Bonding surfaces of 40 Y-TZP specimens received Vi treatment, and the rest received Si treatment. Half of the ceramic-tooth assemblies were cemented with Panavia, the rest with Clearfil. Shear tests were executed using 0.4-mm-thick wire at 0.5 mm/min. Data were analyzed by three-way analysis of variance and Tukey test (α=0.05). Fractures were analyzed. RESULTS Y-TZP surface treatments did not affect bond strength (p=0.762, Vi = Si), while resin cements (p<0.001, Panavia > Clearfil) and aging (p=0.006, nonaging > aging) showed a significant effect. Most failures were in adhesive at dentin-cement interfaces; no failure occurred between zirconia and cement. CONCLUSION When Y-TZP ceramic is bonded to dentin, the weakest interface is that between dentin and resin cement. The resin cement/Y-TZP interface was less susceptible to failures, owing to Y-TZP surface treatments.
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15
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Araújo FMC, Brilhante RSN, Cavalcanti LPG, Rocha MFG, Cordeiro RA, Perdigão ACB, Miralles IS, Araújo LC, Araújo RMC, Lima EG, Sidrim JJC. Detection of the dengue non-structural 1 antigen in cerebral spinal fluid samples using a commercially available enzyme-linked immunosorbent assay. J Virol Methods 2011; 177:128-31. [PMID: 21798288 DOI: 10.1016/j.jviromet.2011.07.003] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2011] [Revised: 04/08/2011] [Accepted: 07/11/2011] [Indexed: 11/30/2022]
Abstract
The involvement of the central nervous system in dengue infections has been reported in countries where the disease in endemic. The purpose of this study was to determine whether an enzyme-linked immunosorbent assay kit designed to detect the dengue NS1 antigen in serum was able to detect this antigen in cerebral spinal fluid (CSF) samples from patients with fatal outcomes. To evaluate the sensitivity of the kit, 26 dengue-positive CSF samples were used. The Pan-E Dengue Early kit was able to detect the NS1 antigen in 13 of 26 dengue-positive CSF samples, resulting in a sensitivity of 50% (95% confidence interval, 29.9-70.1%) and specificity of 100% (95% confidence interval, 75.3-100%). The kit was able to detect the NS1 antigen in CSF of individuals who had died of dengue. When used in combination with IgM, the detection rate rose to 92.3%. This study reports a method for rapidly detecting the dengue virus in CSF, thereby increasing the diagnosis of dengue fever cases with unusual neurological manifestations.
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Affiliation(s)
- F M C Araújo
- Central Public Health Laboratory of Ceará, Brazil.
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16
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Bian L, Lima EG, Angione SL, Ng KW, Williams DY, Xu D, Stoker AM, Cook JL, Ateshian GA, Hung CT. Mechanical and biochemical characterization of cartilage explants in serum-free culture. J Biomech 2008; 41:1153-9. [PMID: 18374344 DOI: 10.1016/j.jbiomech.2008.01.026] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2007] [Revised: 01/28/2008] [Accepted: 01/31/2008] [Indexed: 10/22/2022]
Abstract
Allografts of articular cartilage are both used clinically for tissue-transplantation procedures and experimentally as model systems to study the physiological behavior of chondrocytes in their native extracellular matrix. Long-term maintenance of allograft tissue is challenging. Chemical mediators in poorly defined culture media can stimulate cells to quickly degrade their surrounding extracellular matrix. This is particularly true of juvenile cartilage which is generally more responsive to chemical stimuli than mature tissue. By carefully modulating the culture media, however, it may be possible to preserve allograft tissue over the long-term while maintaining its original mechanical and biochemical properties. In this study juvenile bovine cartilage explants (both chondral and osteochondral) were cultured in both chemically defined medium and serum-supplemented medium for up to 6 weeks. The mechanical properties and biochemical content of explants cultured in chemically defined medium were enhanced after 2 weeks in culture and thereafter remained stable with no loss of cell viability. In contrast, the mechanical properties of explants in serum-supplemented medium were degraded by ( approximately 70%) along with a concurrent loss of biochemical content (30-40% GAG). These results suggest that long-term maintenance of allografts can be extended significantly by the use of a chemically defined medium.
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Affiliation(s)
- L Bian
- Cellular Engineering Laboratory, Department of Biomedical Engineering, Columbia University, New York, NY 10027, USA
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17
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Lima EG, Bian L, Ng KW, Mauck RL, Byers BA, Tuan RS, Ateshian GA, Hung CT. The beneficial effect of delayed compressive loading on tissue-engineered cartilage constructs cultured with TGF-beta3. Osteoarthritis Cartilage 2007; 15:1025-33. [PMID: 17498976 PMCID: PMC2724596 DOI: 10.1016/j.joca.2007.03.008] [Citation(s) in RCA: 185] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2006] [Accepted: 03/11/2007] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To determine whether the functional properties of tissue-engineered constructs cultured in a chemically-defined medium supplemented briefly with TGF-beta3 can be enhanced with the application of dynamic deformational loading. METHODS Primary immature bovine cells (2-3 months old) were encapsulated in agarose hydrogel (2%, 30 x 10(6)cells/ml) and cultured in chemically-defined medium supplemented for the first 2 weeks with transforming growth factor beta 3 (TGF-beta3) (10 microg/ml). Physiologic deformational loading (1 Hz, 3 h/day, 10% unconfined deformation initially and tapering to 2% peak-to-peak deformation by day 42) was applied either concurrent with or after the period of TGF-beta3 supplementation. Mechanical and biochemical properties were evaluated up to day 56. RESULTS Dynamic deformational loading applied concurrently with TGF-beta3 supplementation yielded significantly lower (-90%) overall mechanical properties when compared to free-swelling controls. In contrast, the same loading protocol applied after the discontinuation of the growth factor resulted in significantly increased (+10%) overall mechanical properties relative to free-swelling controls. Equilibrium modulus values reach 1306+/-79 kPa and glycosaminoglycan levels reach 8.7+/-1.6% w.w. during this 8-week period and are similar to host cartilage properties (994+/-280 kPa, 6.3+/-0.9% w.w.). CONCLUSIONS An optimal strategy for the functional tissue engineering of articular cartilage, particularly to accelerate construct development, may incorporate sequential application of different growth factors and applied deformational loading.
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Affiliation(s)
- E G Lima
- Department of Biomedical Engineering, Columbia University, 1210 Amsterdam Avenue, New York, NY 10027, USA
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18
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Herkenhoff FL, Vasquez EC, Mill JG, Lima EG. Ambulatory blood pressure and Doppler echocardiographic indexes of borderline hypertensive men presenting an exaggerated blood pressure response during dynamic exercise. Braz J Med Biol Res 2001; 34:1285-93. [PMID: 11593303 DOI: 10.1590/s0100-879x2001001000008] [Citation(s) in RCA: 3] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Borderline hypertension (BH) has been associated with an exaggerated blood pressure (BP) response during laboratory stressors. However, the incidence of target organ damage in this condition and its relation to BP hyperreactivity is an unsettled issue. Thus, we assessed the Doppler echocardiographic profile of a group of BH men (N = 36) according to office BP measurements with exaggerated BP in the cycloergometric test. A group of normotensive men (NT, N = 36) with a normal BP response during the cycloergometric test was used as control. To assess vascular function and reactivity, all subjects were submitted to the cold pressor test. Before Doppler echocardiography, the BP profile of all subjects was evaluated by 24-h ambulatory BP monitoring. All subjects from the NT group presented normal monitored levels of BP. In contrast, 19 subjects from the original BH group presented normal monitored BP levels and 17 presented elevated monitored BP levels. In the NT group all Doppler echocardiographic indexes were normal. All subjects from the original BH group presented normal left ventricular mass and geometrical pattern. However, in the subjects with elevated monitored BP levels, fractional shortening was greater, isovolumetric relaxation time longer, and early to late flow velocity ratio was reduced in relation to subjects from the original BH group with normal monitored BP levels (P<0.05). These subjects also presented an exaggerated BP response during the cold pressor test. These results support the notion of an integrated pattern of cardiac and vascular adaptation during the development of hypertension.
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Affiliation(s)
- F L Herkenhoff
- Departamento de Ciências Fisiológicas, Centro Biomédico, Universidade Federal do Espírito Santo, Vitória, ES, Brasil.
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19
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Abstract
Natural antierythrocytic antibodies may be stimulated by bacterial antigens and the immune type may occur as a result of pregnancy or blood transfusions. The prevalence increases with the number of red cell units transfused. Specificity, on the other hand, depends on ethnic backgrounds. The clinical importance of these antibodies is to precipitate hemolytic transfusion reactions and erythroblastosis fetalis. Hemodialysis patients are multitransfused and have a quite variable prevalence of antibodies. Kidney transplant patients with blood group identity do not form antibodies. We studied the presence of both types of antierythrocytic antibodies (natural and immune) in hemodialysis and kidney transplant patients in Brazilian blood transfusion and nephrology services.
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Affiliation(s)
- I L Angulo
- Medicine Department, São José do Rio Preto Medical College, S. P., Brazil.
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20
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Affiliation(s)
- E A Marsaro
- Escola de Medicina da Santa Casa de Misericórdia de Vitória
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21
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Lima EG, Herkenhoff F, Vasquez EC. [Ambulatory blood pressure monitoring in individuals with exaggerated blood pressure response to exercise. Influence of physical conditioning]. Arq Bras Cardiol 1998; 70:243-9. [PMID: 9687623 DOI: 10.1590/s0066-782x1998000400002] [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: 02/08/2023] Open
Abstract
PURPOSE To evaluate the effects of exercise training on ergometric test and ambulatory blood pressure monitoring (ABPM) in normotensive individuals with exaggerated blood pressure response to exercise. METHODS We studied 22 sedentary and normotensive subjects (mean 44 +/- 1 years old) showing an exaggerated systolic blood pressure response (SBP > 220mmHg) during a cycloergometric test. These individuals were divided in two groups: sedentary hyperreactive group (SHG) and trained hyperreactive group (THG). The THG was submitted to a 4 month aerobic exercise training program. RESULTS A program of moderate aerobic exercise did not reduce (P > 0.05) ABPM blood pressure levels. However, in the submaximal loads of dynamic exercise we observed a significant fall in the SBP and heart rate (P < 0.05) CONCLUSION Normotensive individuals with exaggerated blood pressure response to dynamical exercise submitted to physical training presented a reduction in their systolic blood pressure and heart rate response during the submaximal loads of the cycloergometric test. The ABPM blood pressure values, however, did not change in both groups. These results suggest the involvement of the sympathetic nervous system in the exaggerated blood pressure response observed in these individuals during dynamic exercise and a corresponding reduction of the sympathetic tonus after training. This effect, apparently, did not extend to their daily activities.
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Affiliation(s)
- E G Lima
- Clínica de Investigação Cardiovascular-CBM, Laboratório de Fisiologia do Exerício-CEFD, UFES, Vitória
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22
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Amodeo C, Giorgi DM, Mion D, Nobre F, Chaves Júnior H, Gomes MA, Atie CS, Pascoal IJ, Malachias MV, Passaro LC, Zanela MT, Santelo JL, Wajngarten M, Lima EG, Ribeiro JM, Jardim PC, Lima Júnior E, Nascimento R, Introcaso L, Koch V. [II Brazilian Consensus of Ambulatory Blood Pressure Monitoring]. Arq Bras Cardiol 1997; 69:359-67. [PMID: 9609004 DOI: 10.1590/s0066-782x1997001100011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
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Herkenhoff FL, Lima EG, Gonçalves RA, Souza AC, Vasquez EC, Mill JG. Doppler echocardiographic indexes and 24-h ambulatory blood pressure data in sedentary middle-aged men presenting exaggerated blood pressure response during dynamical exercise test. Clin Exp Hypertens 1997; 19:1101-16. [PMID: 9310206 DOI: 10.3109/10641969709083207] [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: 02/05/2023]
Abstract
Previous studies have pointed out that exaggerated blood pressure (BP) response during physical exercise could be an early marker of essential hypertension. Apparently some of the exaggerated BP responders present changes in the heart geometry and function that are usually found in the early course of the hypertensive disease. To evaluate the association between exaggerated BP response and these changes, we submitted 20 normotensive men presenting elevated BP response during bicycle exercise (hyperreactive group, systolic BP > or = 220 mmHg at maximal workload) to 24-h ambulatory blood pressure monitoring (ABPM) and to two-dimensionally guided M-mode echocardiography and pulsed Doppler. The results from this group were contrasted with those of a comparable group, which otherwise, presented normal BP response during the same procedure (control group, systolic BP < or = 210 mmHg at maximal workload). The ABPM measurements were normal and analogous between the two groups: the mean 24-h systolic blood pressure (SBP) was respectively 126 +/- 6 mmHg and 129 +/- 5 mmHg, diastolic blood pressure (DBP) 82 +/- 4 mmHg in both groups, and heart rate (HR), respectively 76 +/- 9 and 74 +/- 7 bpm. The univariate correlation (R) between the maximal BP response during bicycle exercise and BP measurements in the ABPM were in general weak, and as a whole, the hyperreactive group presented the weakest correlation coefficients. M-mode echocardiographic data such as the left ventricular mass index (LVMI, 80 +/- 10 vs. 81 +/- 11 g/m2), posterior wall and interventricular septal thickness (PWT, 8.8 +/- 0.6 vs. 8.6 +/- 0.7 mm; IVST, 9.0 +/- 0.4 vs. 8.8 +/- 0.6) were also normal and comparable between the groups. LV systolic functional indexes such as fractional shortening (LVFS, 39 +/- 2.8 vs. 40 +/- 3.5%) and ejection fraction (LVEF, 70 +/- 3.5 vs. 71 +/- 3.7%) were also normal and similar. Doppler-derived LV diastolic functional indexes such as the peak velocity of early flow divided by the peak velocity of late flow (RE/A) and isovolumetric relaxation time (IVRT) were also equivalent (RE/A, both 1.3 +/- 0.2, IVRT 79 +/- 7 vs. 81 +/- 6 msec). These results support the concept that an exaggerated BP elevation during physical activity, when not accompanied of higher levels of BP during daily activities are not associated with changes in the heart geometry or in the ventricular function, and might represent an hemodynamical behavior of limited pathological and clinical importance. These conclusions must be taken cautiously since personal characteristics such as life style, family history of hypertension, gender, race and also the levels of BP chosen to delimit a normal and an exaggerated BP response might be important factors determining the consequences of the hyperreactive behavior.
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Affiliation(s)
- F L Herkenhoff
- Department of Physiological Sciences, Federal University of Espirito Santo, Vitoria, Brazil
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24
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Marsaro EA, Vasquez EC, Lima EG. [Blood pressure assessment in normoreactive and hyperreactive patients. A comparative study between casual and ambulatory blood pressure monitoring]. Arq Bras Cardiol 1996; 67:319-24. [PMID: 9239866] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
PURPOSE To evaluate the levels of blood pressure when measured by casual and ambulatory blood pressure monitoring. METHODS We studied 16 sedentary and normotensive subjects (mean 43 +/- 3 years old) showing an exaggerated blood pressure response (SBP > 220 mmHg) during a cycloergometric test, hyperreactive group (HG). This group was compared to 15 others with SBP < or = 220 mmHg during exercise, normoreactive group (NG). Casual blood pressure was obtained by the conventional method and the ambulatory blood pressure monitoring (ABPM) was obtained with SpaceLabs 90207 monitor. This procedure (test 1) was repeated after four months (test 2). RESULTS Both groups showed statistically higher levels of blood pressure when measured by ABPM device, compared to casual measurements. Systolic blood pressure was significantly higher in HG in casual measurement, in test 1 but not in test 2. Diastolic blood pressure was significantly higher in HG only through the ABPM device. The ambulatory blood pressure average values for two or 24 hours was similar in both groups. No significant differences were observed in left ventricular morphology at the echocardiogram. CONCLUSION These findings indicate that hyperreactive subjects have an exaggerated stress-induced cardiovascular response during the installation of the device.
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Affiliation(s)
- E A Marsaro
- Universidade Federal do Espírito Santo, Escola de Medicina da Santa Casa de Misericórdia de Vitória
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25
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Lima EG, Marsaro EA, Vasquez EC. [Effects of physical conditioning on ambulatory blood pressure monitoring in normotensive and hypertensive patients]. Arq Bras Cardiol 1996; 67:185-8. [PMID: 9181713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Affiliation(s)
- E G Lima
- Centro Biomédrco e Centro de Educação Fisica e Desportos da UFES, Vitória
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26
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Lima EG, Spritzer N, Herkenhoff FL, Bermudes A, Vasquez EC. Noninvasive ambulatory 24-hour blood pressure in patients with high normal blood pressure and exaggerated systolic pressure response to exercise. Hypertension 1995; 26:1121-4. [PMID: 7498980 DOI: 10.1161/01.hyp.26.6.1121] [Citation(s) in RCA: 19] [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] [Indexed: 01/25/2023]
Abstract
Few studies have investigated the significance of abnormal increases in systolic pressure during exercise in patients with high normal blood pressure and its correlation with 24-hour ambulatory blood pressure monitoring and left ventricular structure. This study was performed in 30 sedentary subjects (42 +/- 4 years old) with high normal blood pressure. Fifteen subjects presenting < 220 mm Hg systolic pressure during ergometric exercise were compared with 15 others with systolic pressure > or = 220 mm Hg. Average 24-hour (systolic, 127 +/- 5 versus 142 +/- 4 mm Hg, P < .01; diastolic, 82 +/- 4 versus 92 +/- 3 mm Hg, P < .01), daytime (systolic, 130 +/- 6 versus 144 +/- 4 mm Hg, P < .01; diastolic, 84 +/- 4 versus 92 +/- 4 mm Hg, P < .01), and nighttime (systolic, 116 +/- 7 versus 132 +/- 6 mm Hg, P < .01; diastolic, 72 +/- 6 versus 85 +/- 6 mm Hg, P < .01) ambulatory blood pressure monitoring values were significantly higher in subjects with an exaggerated blood pressure response to exercise. No significant differences were observed in left ventricular morphology. These findings indicate that subjects presenting high normal blood pressure and exaggerated systolic pressure during exercise show significantly high ambulatory blood pressure monitoring values that are not associated with left ventricular hypertrophy.
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Affiliation(s)
- E G Lima
- Department of Physiological Sciences, UFES, Vitoria, Brazil
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Chesman C, Lima EG, de Oliveira FA, Vianna SS, Tabosa JW. Two- and four-beam magneto-optical trapping of neutral atoms. Opt Lett 1994; 19:1237-1239. [PMID: 19855481 DOI: 10.1364/ol.19.001237] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
We report the experimental realization of new stable three-dimensional schemes for trapping neutral cesium atoms in a vapor cell that use either two or four Gaussian laser beams. Probe-beam absorption is employed to characterize both types of trap, and densities of 2 x 10(8) and 1 x 10(10) cm(-3), respectively, are measured for the two-and four-beam traps. The two-beam trapping mechanism combines a longitudinal magneto-optical force with a transverse spontaneous radiation pressure force associated basically with the beam geometry. This theoretical analysis compares well with our experimental observations.
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Lima EG, Herkenhoff F, Vasquez EC. [Reactivity of blood pressure during physical exercise]. Arq Bras Cardiol 1994; 63:51-4. [PMID: 7857213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Affiliation(s)
- E G Lima
- Universidade Federal do Espírito Santo, Vitória
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29
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Herkenhoff FL, Lima EG, Vasquez EC, Mill JG. [The importance of stress tests in the diagnosis of arterial hypertension]. Arq Bras Cardiol 1994; 62:439-43. [PMID: 7826239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Affiliation(s)
- F L Herkenhoff
- Laboratório de Fisiologia do Exercício, CEFD-UFES-Vitória
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Herkenhoff F, Lima EG, Mill JG. Arterial pressure reactivity to experimental stress tests in normotensive humans with arterial pressure hyperreactivity during submaximal exercise. Braz J Med Biol Res 1994; 27:1425-30. [PMID: 7894358] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Normotensive individuals with a sedentary life style and low occupational physical activity presenting an elevated arterial pressure response during the bicycle exercise test (systolic pressure, SP, > or = 220 and/or an increase in diastolic pressure, delta DP, > or = 15 mmHg) (hyperreactive group, HG, N = 45) were submitted to the following tests: isometric hand-grip, cold pressor, mathematical calculation and word/color conflict (Stroop). Their results were compared with those obtained for a control group of normotensive individuals with normal response during the bicycle exercise test (SP < 220 and delta DP < 15 mmHg) (normoreactive group, NG, N = 45). In the isometric hand-grip a differentiated increase of SP and DP (P < 0.01) was observed in the HG as compared with the NG. In the cold pressor test a different increase of SP and DP was also demonstrable (P < 0.05). The mathematical and word/color conflict tests produced highly differentiated responses of SP (P < 0.01) and DP (P < 0.05) between groups. These results indicate that HG individuals present an arterial pressure response significantly higher than the NG during stress tests. Although the elevated levels of arterial pressure used for group selection may have contributed to the formation of an indiscriminate arterial pressure hyperreactive group, the results, taken as a whole, suggest that hyperreactive individuals present higher levels of sympathetic drive and/or an increased response of the cardiovascular system to adrenergic stimulation.
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Affiliation(s)
- F Herkenhoff
- Departamento de Ciências Fisiológicas, Universidade Federal do Espírito Santo, Vitoria, Brasil
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Lima EG. Parametric oscillator pumped by a quantum current. Phys Rev A 1993; 48:4569-4575. [PMID: 9910162 DOI: 10.1103/physreva.48.4569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Lima EG, do Nascimento LM, Busatto VC, Rocha RC. [Cardiorespiratory evaluation in sedentary subjects during a physical conditioning program]. Arq Bras Cardiol 1983; 40:111-3. [PMID: 6625942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
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Lima EG, Freire-Maia L. Cardiovascular and respiratory effects induced by intracerebroventricular injection of scorpion toxin (tityustoxin) in the rat. Toxicon 1977; 15:225-34. [PMID: 867438 DOI: 10.1016/0041-0101(77)90048-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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34
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Lima EG, Almeida HO, Gomez MV, Freire-Maia L. Acute pulmonary edema induced by injection of tityustoxin into the lateral ventricles of rats. Toxicon 1975; 13:205-6. [PMID: 1145645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Lima EG, Almeida HO, Gomez MV, Freire-Maia L. Acute pulmonary edema induced by injections of tityustoxin into the lateral ventricles of rats. Toxicon 1975; 13:205-6. [PMID: 1052576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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