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Bernardi AV, Souza MT, Montedo ORK, Domingues FHF, Arcaro S, Kopper PMP. Impact of Particle Size on the Setting Behavior of Tricalcium Silicate: A Comparative Study Using ISO 6876 Indentation Testing and Isothermal Induction Calorimetry. Bioengineering (Basel) 2023; 11:36. [PMID: 38247913 PMCID: PMC10813003 DOI: 10.3390/bioengineering11010036] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 08/18/2023] [Accepted: 08/30/2023] [Indexed: 01/23/2024] Open
Abstract
This study examines the impact of particle size on the setting behavior of tricalcium silicate powders. The setting behavior was evaluated using ISO 6876 indentation testing and isothermal induction calorimetry techniques. The objective was to compare the outcomes obtained from these methods and establish a correlation between particle size and setting characteristics. The cement pastes were manually mixed with a water-to-solid ratio of 0.66 for conducting indentation tests according to ISO 6876, while calorimetry measurements were performed using isothermal (conduction) calorimetry at room temperature. The findings demonstrate a significant influence of smaller particle sizes on accelerating the hydration process of cement pastes, resulting in a reduction of setting time by up to 24%. Moreover, the final setting times obtained through the indentation method closely approximate the inflection points of the acceleration curves acquired by calorimetry, with time deviations of less than 12% regardless of particle size.
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Affiliation(s)
- Anarela Vassen Bernardi
- Graduate Program in Dentistry, School of Dentistry, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre 90010-150, RS, Brazil; (A.V.B.); (P.M.P.K.)
- Grupo de Pesquisa de Biomateriais e Materiais Nanoestruturados, Laboratório de Cerâmica Técnica (CerTec), Universidade do Extremo Sul Catarinense (UNESC), Criciúma 88806-000, SC, Brazil; (O.R.K.M.); (S.A.)
| | - Marcelo Tramontin Souza
- Graduate Program in Science, Innovation and Modelling in Materials (PROCIMM), State University of Santa Cruz (UESC), Ilhéus 45662-900, BA, Brazil
| | - Oscar Rubem Klegues Montedo
- Grupo de Pesquisa de Biomateriais e Materiais Nanoestruturados, Laboratório de Cerâmica Técnica (CerTec), Universidade do Extremo Sul Catarinense (UNESC), Criciúma 88806-000, SC, Brazil; (O.R.K.M.); (S.A.)
| | - Felipe Henrique Fassina Domingues
- Graduate Program in Dentistry, School of Dentistry, Federal University of Mato Grosso do Sul (UFMS), Campo Grande 79070-900, MS, Brazil;
| | - Sabrina Arcaro
- Grupo de Pesquisa de Biomateriais e Materiais Nanoestruturados, Laboratório de Cerâmica Técnica (CerTec), Universidade do Extremo Sul Catarinense (UNESC), Criciúma 88806-000, SC, Brazil; (O.R.K.M.); (S.A.)
| | - Patrícia Maria Poli Kopper
- Graduate Program in Dentistry, School of Dentistry, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre 90010-150, RS, Brazil; (A.V.B.); (P.M.P.K.)
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Moraes PIM, Alves CMR, Souza MT, Kawakami SE, Galhardo A, Kanhouche G, Cardoso JP, Santos LPM, Arero JRB, Ramon CH, Goncalves Jr I, Moreno AC, Barbosa AHP, Caixeta A, Carvalho ACC. P2269IABP-SHOCK II risk score validation for cardiogenic shock after myocardial infarction in a cohort treated with pharmaco-invasive therapy. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.0746] [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
Risk stratification using scores is a valuable tool in cardiogenic shock after ST elevation myocardial infarction (STEMI). During pharmacoinvasive therapy (PIT) their use is unexplored in the literature. Objective: To validate the IABP-SHOCK II (Intra-aortic Balloon Pump in Cardiogenic Shock) score in patients treated with PIT and to analyze the influence of ischemia time on the different risk strata.
Methods and results
Of 2,143 STEMI patients seen between May 2010 and April 2017, 212 (9.9%) developed cardiogenic shock. Thirty-one patients (14.6%) with incomplete data were excluded from the analysis and the validation cohort included the remaining 181. Mortality rates were similar between the analyzed and excluded patients (42.5% and 45.1% respectively, p=0.77). The 30-day mortality using the IABP-SHOCK II score was 26.6% for low-risk (n=94), 53.2% for moderate-risk (n=62), and 76% for high-risk (n=25) (p<0.001). The validation of the score showed good discrimination for death, with an area under the curve of 0.73 (95% confidence interval 0.66 to 0.81 p<0.001). Although pain-to-needle time was significantly longer in patients who died within 30 days (251 min, interquartile range 140–528 vs. 210 min, interquartile range 130–343, p=0.032), the median intervals of pain-to-needle and fibrinolytic-catheterization showed no association with the group stratification (220 vs 251 vs 200 min; p=0.22 and 390 vs 435 vs 315 min; p=0.18, respectively). This finding may be explained by the potential of these variables to be more closely associated with the development of cardiogenic shock in STEMI patients treated with PIT, and to be less associated with progression to death when the patient is already in shock.
30-day mortality in scored strata
Conclusion
In patients with cardiogenic shock after STEMI treated with PIT, risk stratification using the IABP-SHOCK II score was adequate. There was no influence of pain-to-needle and fibrinolytic-catheterization times on the ability to the score model stratification.
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Affiliation(s)
- P I M Moraes
- Federal University of Sao Paulo (UNIFESP), Sao Paulo, Brazil
| | - C M R Alves
- Federal University of Sao Paulo (UNIFESP), Sao Paulo, Brazil
| | - M T Souza
- Federal University of Sao Paulo (UNIFESP), Sao Paulo, Brazil
| | - S E Kawakami
- Federal University of Sao Paulo (UNIFESP), Sao Paulo, Brazil
| | - A Galhardo
- Federal University of Sao Paulo (UNIFESP), Sao Paulo, Brazil
| | - G Kanhouche
- Federal University of Sao Paulo (UNIFESP), Sao Paulo, Brazil
| | - J P Cardoso
- Federal University of Sao Paulo (UNIFESP), Sao Paulo, Brazil
| | - L P M Santos
- Federal University of Sao Paulo (UNIFESP), Sao Paulo, Brazil
| | - J R B Arero
- Federal University of Sao Paulo (UNIFESP), Sao Paulo, Brazil
| | - C H Ramon
- Federal University of Sao Paulo (UNIFESP), Sao Paulo, Brazil
| | - I Goncalves Jr
- Federal University of Sao Paulo (UNIFESP), Sao Paulo, Brazil
| | - A C Moreno
- Federal University of Sao Paulo (UNIFESP), Sao Paulo, Brazil
| | - A H P Barbosa
- Federal University of Sao Paulo (UNIFESP), Sao Paulo, Brazil
| | - A Caixeta
- Federal University of Sao Paulo (UNIFESP), Sao Paulo, Brazil
| | - A C C Carvalho
- Federal University of Sao Paulo (UNIFESP), Sao Paulo, Brazil
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Souza MT, Simão L, Montedo ORK, Raupp Pereira F, de Oliveira APN. Aluminum anodizing waste and its uses: An overview of potential applications and market opportunities. Waste Manag 2019; 84:286-301. [PMID: 30691903 DOI: 10.1016/j.wasman.2018.12.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Revised: 11/30/2018] [Accepted: 12/02/2018] [Indexed: 06/09/2023]
Abstract
The aluminum anodizing process generates a large volume of waste composed mainly of amorphous aluminum hydroxide with chemical compatibility to be used in other industrial processes as an alternative starting raw material. This waste has several application possibilities such as the production of refractories, ceramic pigments, bricks, and many others. However, despite its potential features, its recycling process is far from well consolidated. This work highlights the most important contributions regarding Al-anodizing waste (AAW) features and their potential applications from the last 30 years. We provide the most complete and detailed characterization of AAW including chemical, physical, thermal, and microstructural analysis. The characterization analyzes were performed in a Brazilian waste sample and were compared with AAW worldwide. Additionally, our characterization results also considered differentiate previous processing; this, it many other possibilities are suggested that have not been explored thus far. The recycling feasibility of AAW is discussed according to the following criteria: classification, including legislation and standards; potentiality, including physical and chemical characteristics and purity; quantity, including production data; viability, including availability, costs regarding disposal and recycling process, and available technology for recycling; and applicability, including market opportunities. Moreover, alumina recovery from AAW and the related environmental aspects are discussed.
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Affiliation(s)
- Marcelo Tramontin Souza
- Postgraduate Program in Materials Science and Engineering (PGMAT), Laboratory of Glass-Ceramic Materials (VITROCER), Federal University of Santa Catarina (UFSC), P.O. Box 476, 88040-900 Florianópolis, SC, Brazil.
| | - Lisandro Simão
- Postgraduate Program in Materials Science and Engineering (PGMAT), Laboratory of Glass-Ceramic Materials (VITROCER), Federal University of Santa Catarina (UFSC), P.O. Box 476, 88040-900 Florianópolis, SC, Brazil
| | - Oscar Rubem Klegues Montedo
- Postgraduate Program in Materials Science and Engineering (PPGCEM), Laboratory of Technical Ceramics (CerTec), Universidade do Extremo Sul Catarinense (UNESC), Av. Universitária 1105, P.O. Box 3167, 88806-000 Criciúma, SC, Brazil
| | - Fabiano Raupp Pereira
- Postgraduate Program in Materials Science and Engineering (PGMAT), Laboratory of Glass-Ceramic Materials (VITROCER), Federal University of Santa Catarina (UFSC), P.O. Box 476, 88040-900 Florianópolis, SC, Brazil
| | - Antonio Pedro Novaes de Oliveira
- Postgraduate Program in Materials Science and Engineering (PGMAT), Laboratory of Glass-Ceramic Materials (VITROCER), Federal University of Santa Catarina (UFSC), P.O. Box 476, 88040-900 Florianópolis, SC, Brazil
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Santos BPA, Souza MT, Kawakami SE, Faccinetto ACB, Nancassa VAC, Lyra FG, Goncalves Junior I, Godoy HL, Barbosa AHP, Souza JMA, Moreno AC, Alves CMR, Stefanini E, Moraes PIM, Carvalho ACC. P6444Revisiting intra cranial hemorrhage after pharmaco-invasive therapy in a real world cohort: analysis of 2265 cases. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p6444] [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)
- B P A Santos
- Federal University of Sao Paulo (UNIFESP), Cardiology, Sao Paulo, Brazil
| | - M T Souza
- Federal University of Sao Paulo (UNIFESP), Cardiology, Sao Paulo, Brazil
| | - S E Kawakami
- Federal University of Sao Paulo (UNIFESP), Cardiology, Sao Paulo, Brazil
| | - A C B Faccinetto
- Federal University of Sao Paulo (UNIFESP), Cardiology, Sao Paulo, Brazil
| | - V A C Nancassa
- Federal University of Sao Paulo (UNIFESP), Cardiology, Sao Paulo, Brazil
| | - F G Lyra
- Federal University of Sao Paulo (UNIFESP), Cardiology, Sao Paulo, Brazil
| | - I Goncalves Junior
- Federal University of Sao Paulo (UNIFESP), Cardiology, Sao Paulo, Brazil
| | - H L Godoy
- Federal University of Sao Paulo (UNIFESP), Cardiology, Sao Paulo, Brazil
| | - A H P Barbosa
- Federal University of Sao Paulo (UNIFESP), Cardiology, Sao Paulo, Brazil
| | - J M A Souza
- Federal University of Sao Paulo (UNIFESP), Cardiology, Sao Paulo, Brazil
| | - A C Moreno
- Federal University of Sao Paulo (UNIFESP), Cardiology, Sao Paulo, Brazil
| | - C M R Alves
- Federal University of Sao Paulo (UNIFESP), Cardiology, Sao Paulo, Brazil
| | - E Stefanini
- Federal University of Sao Paulo (UNIFESP), Cardiology, Sao Paulo, Brazil
| | - P I M Moraes
- Federal University of Sao Paulo (UNIFESP), Cardiology, Sao Paulo, Brazil
| | - A C C Carvalho
- Federal University of Sao Paulo (UNIFESP), Cardiology, Sao Paulo, Brazil
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Souza MT, Rennó ACM, Peitl O, Zanotto ED. New highly bioactive crystallization-resistant glass for tissue engineering applications. ACTA ACUST UNITED AC 2017. [DOI: 10.1088/2053-1613/aa53b5] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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Barbosa EA, Souza MT, Diniz RHS, Godoy-Santos F, Faria-Oliveira F, Correa LFM, Alvarez F, Coutrim MX, Afonso RJCF, Castro IM, Brandão RL. Quality improvement and geographical indication of cachaça (Brazilian spirit) by using locally selected yeast strains. J Appl Microbiol 2016; 121:1038-51. [PMID: 27374976 DOI: 10.1111/jam.13216] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Revised: 06/21/2016] [Accepted: 06/26/2016] [Indexed: 11/29/2022]
Abstract
AIMS In order to improve the quality and to create a biological basis for obtainment of the protected denomination of origin (PDO), indigenous yeast were isolated and characterized for use in Salinas city (the Brazilian region of quality cachaça production). MATERIAL AND METHODS Seven thousand and two hundred yeast colonies from 15 Salinas city distilleries were screened based on their fermentative behaviour and the physicochemical composition of cachaça. Molecular polymorphic analyses were performed to characterize these isolates. RESULTS Two Saccharomyces cerevisiae strains (nos. 678 and 680) showed appropriate characteristics to use in the cachaça production: low levels of acetaldehyde and methanol, and high ethyl lactate/ethyl acetate ratio respectively. They also presented polymorphic characteristics more closely related between themselves even when compared to other strains from Salinas. CONCLUSIONS The application of selected yeast to cachaça production can contribute for the improvement of the quality product as well as be used as a natural marker for PDO. SIGNIFICANCE AND IMPACT OF THE STUDY This study suggests that the use of selected yeast strains could contribute to obtain a cachaça similar to those produced traditionally, while getting wide acceptation in the market, yet presenting more homogeneous organoleptic characteristics, and thus contributing to the PDO implementation.
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Affiliation(s)
- E A Barbosa
- Laboratório de Biologia Celular e Molecular, Núcleo de Pesquisas em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil.,Laboratório de Análises Físico - Químicas, Departamento de Química, Instituto de Ciências Exatas e Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil
| | - M T Souza
- Laboratório de Biologia Celular e Molecular, Núcleo de Pesquisas em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil.,Laboratório de Análises Físico - Químicas, Departamento de Química, Instituto de Ciências Exatas e Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil
| | - R H S Diniz
- Laboratório de Biologia Celular e Molecular, Núcleo de Pesquisas em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil
| | - F Godoy-Santos
- Laboratório de Biologia Celular e Molecular, Núcleo de Pesquisas em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil
| | - F Faria-Oliveira
- Laboratório de Biologia Celular e Molecular, Núcleo de Pesquisas em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil
| | - L F M Correa
- Laboratório de Biologia Celular e Molecular, Núcleo de Pesquisas em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil
| | - F Alvarez
- Cerlev - Projetos e Inovação na Biotecnologia da Fermentação Ltda., Ouro Preto, MG, Brazil
| | - M X Coutrim
- Campus Salinas, Instituto Federal Norte de Minas Gerais, Salinas, MG, Brazil
| | - R J C F Afonso
- Campus Salinas, Instituto Federal Norte de Minas Gerais, Salinas, MG, Brazil
| | - I M Castro
- Laboratório de Biologia Celular e Molecular, Núcleo de Pesquisas em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil
| | - R L Brandão
- Laboratório de Biologia Celular e Molecular, Núcleo de Pesquisas em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil.
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Gabbai-Armelin PR, Souza MT, Kido HW, Tim CR, Bossini PS, Magri AMP, Fernandes KR, Pastor FAC, Zanotto ED, Parizotto NA, Peitl O, Renno ACM. Effect of a new bioactive fibrous glassy scaffold on bone repair. J Mater Sci Mater Med 2015; 26:177. [PMID: 25893392 DOI: 10.1007/s10856-015-5516-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2014] [Accepted: 03/11/2015] [Indexed: 06/04/2023]
Abstract
Researchers have investigated several therapeutic approaches to treat non-union fractures. Among these, bioactive glasses and glass ceramics have been widely used as grafts. This class of biomaterial has the ability to integrate with living bone. Nevertheless, bioglass and bioactive materials have been used mainly as powder and blocks, compromising the filling of irregular bone defects. Considering this matter, our research group has developed a new bioactive glass composition that can originate malleable fibers, which can offer a more suitable material to be used as bone graft substitutes. Thus, the aim of this study was to assess the morphological structure (via scanning electron microscope) of these fibers upon incubation in phosphate buffered saline (PBS) after 1, 7 and 14 days and, also, evaluate the in vivo tissue response to the new biomaterial using implantation in rat tibial defects. The histopathological, immunohistochemistry and biomechanical analyzes after 15, 30 and 60 days of implantation were performed to investigate the effects of the material on bone repair. The PBS incubation indicated that the fibers of the glassy scaffold degraded over time. The histological analysis revealed a progressive degradation of the material with increasing implantation time and also its substitution by granulation tissue and woven bone. Histomorphometry showed a higher amount of newly formed bone area in the control group (CG) compared to the biomaterial group (BG) 15 days post-surgery. After 30 and 60 days, CG and BG showed a similar amount of newly formed bone. The novel biomaterial enhanced the expression of RUNX-2 and RANK-L, and also improved the mechanical properties of the tibial callus at day 15 after surgery. These results indicated a promising use of the new biomaterial for bone engineering. However, further long-term studies should be carried out to provide additional information concerning the material degradation in the later stages and the bone regeneration induced by the fibrous material.
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Affiliation(s)
- P R Gabbai-Armelin
- Federal University of São Carlos (UFSCar), Rodovia Washington Luís (SP-310), km 235, São Carlos, SP, Brazil,
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Gabbai-Armelin PR, Souza MT, Kido HW, Tim CR, Bossini PS, Fernandes KR, Magri AMP, Parizotto NA, Fernandes KPS, Mesquita-Ferrari RA, Ribeiro DA, Zanotto ED, Peitl O, Renno ACM. Characterization and biocompatibility of a fibrous glassy scaffold. J Tissue Eng Regen Med 2015; 11:1141-1151. [PMID: 25712803 DOI: 10.1002/term.2017] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2014] [Revised: 12/16/2014] [Accepted: 01/15/2015] [Indexed: 01/22/2023]
Abstract
Bioactive glasses (BGs) are known for their ability to bond to living bone and cartilage. In general, they are readily available in powder and monolithic forms, which are not ideal for the optimal filling of bone defects with irregular shapes. In this context, the development of BG-based scaffolds containing flexible fibres is a relevant approach to improve the performance of BGs. This study is aimed at characterizing a new, highly porous, fibrous glassy scaffold and evaluating its in vitro and in vivo biocompatibility. The developed scaffolds were characterized in terms of porosity, mineralization and morphological features. Additionally, fibroblast and osteoblast cells were seeded in contact with extracts of the scaffolds to assess cell proliferation and genotoxicity after 24, 72 and 144 h. Finally, scaffolds were placed subcutaneously in rats for 15, 30 and 60 days. The scaffolds presented interconnected porous structures, and the precursor bioglass could mineralize a hydroxyapatite (HCA) layer in simulated body fluid (SBF) after only 12 h. The biomaterial elicited increased fibroblast and osteoblast cell proliferation, and no DNA damage was observed. The in vivo experiment showed degradation of the biomaterial over time, with soft tissue ingrowth into the degraded area and the presence of multinucleated giant cells around the implant. At day 60, the scaffolds were almost completely degraded and an organized granulation tissue filled the area. The results highlight the potential of this fibrous, glassy material for bone regeneration, due to its bioactive properties, non-cytotoxicity and biocompatibility. Future investigations should focus on translating these findings to orthotopic applications. Copyright © 2015 John Wiley & Sons, Ltd.
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Affiliation(s)
- P R Gabbai-Armelin
- Post-Graduate Programme of Biotechnology, Federal University of São Carlos (UFSCar), SP, Brazil.,Department of Physiotherapy, Federal University of São Carlos (UFSCar), SP, Brazil
| | - M T Souza
- Vitreous Materials Laboratory (LaMaV), Department of Materials Engineering, Federal University of São Carlos (UFSCar), SP, Brazil
| | - H W Kido
- Post-Graduate Programme of Biotechnology, Federal University of São Carlos (UFSCar), SP, Brazil.,Department of Physiotherapy, Federal University of São Carlos (UFSCar), SP, Brazil
| | - C R Tim
- Post-Graduate Programme of Biotechnology, Federal University of São Carlos (UFSCar), SP, Brazil.,Department of Physiotherapy, Federal University of São Carlos (UFSCar), SP, Brazil
| | - P S Bossini
- Department of Biosciences, Federal University of São Paulo (UNIFESP), Santos, SP, Brazil
| | - K R Fernandes
- Department of Biosciences, Federal University of São Paulo (UNIFESP), Santos, SP, Brazil
| | - A M P Magri
- Department of Biosciences, Federal University of São Paulo (UNIFESP), Santos, SP, Brazil
| | - N A Parizotto
- Department of Physiotherapy, Federal University of São Carlos (UFSCar), SP, Brazil
| | - K P S Fernandes
- Department of Rehabilitation Sciences and Biophotonics Applied to Health Sciences, Nove de Julho University (UNINOVE), São Paulo, SP, Brazil
| | - R A Mesquita-Ferrari
- Department of Rehabilitation Sciences and Biophotonics Applied to Health Sciences, Nove de Julho University (UNINOVE), São Paulo, SP, Brazil
| | - D A Ribeiro
- Department of Biosciences, Federal University of São Paulo (UNIFESP), Santos, SP, Brazil
| | - E D Zanotto
- Vitreous Materials Laboratory (LaMaV), Department of Materials Engineering, Federal University of São Carlos (UFSCar), SP, Brazil
| | - O Peitl
- Vitreous Materials Laboratory (LaMaV), Department of Materials Engineering, Federal University of São Carlos (UFSCar), SP, Brazil
| | - A C M Renno
- Department of Biosciences, Federal University of São Paulo (UNIFESP), Santos, SP, Brazil
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Souza MT, Carvalho-Zilse GA. Molecular identification of Amazonian stingless bees using polymerase chain reaction single-strand conformation polymorphism. Genet Mol Res 2014; 13:5507-13. [PMID: 25117306 DOI: 10.4238/2014.july.25.4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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
In countries containing a mega diversity of wildlife, such as Brazil, identifying and characterizing biological diversity is a continuous process for the scientific community, even in face of technological and scientific advances. This activity demands initiatives for the taxonomic identification of highly diverse groups, such as stingless bees, including molecular analysis strategies. This type of bee is distributed in all of the Brazilian states, with the highest species diversity being found in the State of Amazônia. However, the estimated number of species diverges among taxonomists. These bees are considered the main pollinators in the Amazon rainforest, in which they obtain food and shelter; however, their persistence is constantly threatened by deforestation pressure. Hence, it is important to classify the number and abundance of bee specie, to measure their decline and implement meaningful, priority conservation strategies. This study aims to maximize the implementation of more direct, economic and successful techniques for the taxonomic identification of stingless bees. Specifically, the genes 16S rRNA and COI from mitochondrial DNA were used as molecular markers to differentiate 9 species of Amazonian stingless bees based on DNA polymorphism, using the polymerase chain reaction-single-strand conformation polymorphism technique. We registered different, exclusive SSCP haplotypes for both genes in all species analyzed. These results demonstrate that SSCP is a simple and cost-effective technique that is applicable to the molecular identification of stingless bee species.
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Affiliation(s)
- M T Souza
- Programa de Pós-Graduação em Genética, Conservação e Biologia Evolutiva, Instituto Nacional de Pesquisas da Amazônia, Manaus, AM, Brasil
| | - G A Carvalho-Zilse
- Grupo de Pesquisas em Abelhas, Coordenação de Biodiversidade, Instituto Nacional de Pesquisas da Amazônia, Manaus, AM, Brasil
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Muniz CR, da Silva GF, Souza MT, Freire FCO, Kema GHJ, Guedes MIF. Agrobacterium tumefaciens-mediated transformation of Lasiodiplodia theobromae, the causal agent of gummosis in cashew nut plants. Genet Mol Res 2014; 13:2906-13. [PMID: 24634294 DOI: 10.4238/2014.february.21.8] [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
Lasiodiplodia theobromae is a major pathogen of many different crop cultures, including cashew nut plants. This paper describes an efficient Agrobacterium tumefaciens-mediated transformation (ATMT) system for the successful delivery of T-DNA, transferring the genes of green fluorescent protein (gfp) and hygromycin B phosphotransferase (hph) to L. theobromae. When the fungal pycnidiospores were co-cultured with A. tumefaciens harboring the binary vector with hph-gfp gene, hygromycin-resistant fungus only developed with acetosyringone supplementation. The cashew plants inoculated with the fungus expressing GFP revealed characteristic pathogen colonization by epifluorescence microscopy. Intense and bright green hyphae were observed for transformants in all extensions of mycelium cultures. The penetration of parenchyma cells near to the inoculation site, beneath the epicuticle surface, was observed prior to 25 dpi. Penetration was followed by the development of hyphae within invaded host cells. These findings provide a rapid and reproducible ATMT method for L. theobromae transformation.
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Affiliation(s)
- C R Muniz
- Embrapa Agroindústria Tropical, Fortaleza, CE, Brasil
| | - G F da Silva
- Laboratório de Biologia Molecular, Embrapa Amazônia Ocidental, Manaus, AM, Brasil
| | - M T Souza
- Embrapa Agroenergia, Parque Estação Biológica, Brasília, DF, Brasil
| | - F C O Freire
- Embrapa Agroindústria Tropical, Fortaleza, CE, Brasil
| | - G H J Kema
- Biointeractions and Plant Health, Plant Research International B.V., Wageningen, The Netherlands
| | - M I F Guedes
- Universidade Estadual do Ceará, Centro de Ciência da Saúde, Fortaleza, CE, Brasil
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Garcia SAL, Van der Lee TAJ, Ferreira CF, Te Lintel Hekkert B, Zapater MF, Goodwin SB, Guzmán M, Kema GHJ, Souza MT. Variable number of tandem repeat markers in the genome sequence of Mycosphaerella fijiensis, the causal agent of black leaf streak disease of banana (Musa spp). Genet Mol Res 2010; 9:2207-12. [PMID: 21064028 DOI: 10.4238/vol9-4gmr934] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
We searched the genome of Mycosphaerella fijiensis for molecular markers that would allow population genetics analysis of this plant pathogen. M. fijiensis, the causal agent of banana leaf streak disease, also known as black Sigatoka, is the most devastating pathogen attacking bananas (Musa spp). Recently, the entire genome sequence of M. fijiensis became available. We screened this database for VNTR markers. Forty-two primer pairs were selected for validation, based on repeat type and length and the number of repeat units. Five VNTR markers showing multiple alleles were validated with a reference set of isolates from different parts of the world and a population from a banana plantation in Costa Rica. Polymorphism information content values varied from 0.6414 to 0.7544 for the reference set and from 0.0400 and 0.7373 for the population set. Eighty percent of the polymorphism information content values were above 0.60, indicating that the markers are highly informative. These markers allowed robust scoring of agarose gels and proved to be useful for variability and population genetics studies. In conclusion, the strategy we developed to identify and validate VNTR markers is an efficient means to incorporate markers that can be used for fungicide resistance management and to develop breeding strategies to control banana black leaf streak disease. This is the first report of VNTR-minisatellites from the M. fijiensis genome sequence.
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Affiliation(s)
- S A L Garcia
- Plant Research International B.V., Wageningen University and Research Centre, Wageningen, The Netherlands
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12
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Alves FA, Souza MT, Gonçalves EC, Schneider MPC, Marinho AM, Muniz JAPC, Fragoso SP, Krieger MA, Goldenberg S, Daniel-Ribeiro CT, Carvalho LJM. DNA sequencing of 13 cytokine gene fragments of Aotus infulatus and Saimiri sciureus, two non-human primate models for malaria. Cytokine 2010; 52:151-5. [PMID: 20943414 DOI: 10.1016/j.cyto.2010.09.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2010] [Revised: 07/21/2010] [Accepted: 09/15/2010] [Indexed: 11/25/2022]
Abstract
Aotus and Saimiri are non-human primate models recommended by the World Health Organization for experimental studies in malaria, especially for vaccine pre-clinical trials. However, research using these primates is hindered by the lack of specific reagents to evaluate immune responses to infection or vaccination. As a step toward developing molecular tools for cytokine expression studies in these species, primer pairs for 18 cytokine gene fragments were designed based on human DNA sequences and used to amplify the corresponding genes in Aotus infulatus and Saimiri sciureus genomic DNA samples. IFNγ, TNFα, LTA, IL2, IL3, IL4, IL5, IL6, IL10, IL12, IL13, CSF2 and TGFβ2 gene fragments were amplified and sequenced. Primer pairs for IL8, IL17, IL18, IL27 and MIF failed to generate amplification products. When compared to the available corresponding human and non-human primate sequences, most--except IL3 and IL4--showed identity degrees above 90%. Small variations in sequence can help to explain the failure to amplify certain genes or the amplification only at lower annealing temperatures as compared to human DNA samples for several primer pairs. The sequences made available provide the basis for designing molecular tools such as primers for real time PCR specific for A. infulatus and/or S. sciureus. The nucleotide sequences reported in this paper have been submitted to the GenBank nucleotide sequence database and have been assigned accession numbers DQ985386 to DQ985389, DQ989356 to DQ989369, FJ89020 to FJ89024, and FJ89029.
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Affiliation(s)
- F A Alves
- Laboratory of Malaria Research, Laboratory for Malaria Research, Instituto Oswaldo Cruz and Center for Malaria Research and Training (CPD-Mal), FIOCRUZ and SVS, Rio de Janeiro, Brazil.
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13
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Santos CMR, Martins NF, Hörberg HM, de Almeida ERP, Coelho MCF, Togawa RC, da Silva FR, Caetano AR, Miller RNG, Souza MT. Analysis of expressed sequence tags from Musa acuminata ssp. burmannicoides, var. Calcutta 4 (AA) leaves submitted to temperature stresses. Theor Appl Genet 2005; 110:1517-22. [PMID: 15841358 DOI: 10.1007/s00122-005-1989-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2004] [Accepted: 03/07/2005] [Indexed: 05/20/2023]
Abstract
In order to discover genes expressed in leaves of Musa acuminata ssp. burmannicoides var. Calcutta 4 (AA), from plants submitted to temperature stress, we produced and characterized two full-length enriched cDNA libraries. Total RNA from plants subjected to temperatures ranging from 5 degrees C to 25 degrees C and from 25 degrees C to 45 degrees C was used to produce a COLD and a HOT cDNA library, respectively. We sequenced 1,440 clones from each library. Following quality analysis and vector trimming, we assembled 2,286 sequences from both libraries into 1,019 putative transcripts, consisting of 217 clusters and 802 singletons, which we denoted Musa acuminata assembled expressed sequence tagged (EST) sequences (MaAES). Of these MaAES, 22.87% showed no matches with existing sequences in public databases. A global analysis of the MaAES data set indicated that 10% of the sequenced cDNAs are present in both cDNA libraries, while 42% and 48% are present only in the COLD or in the HOT libraries, respectively. Annotation of the MaAES data set categorized them into 22 functional classes. Of the 2,286 high-quality sequences, 715 (31.28%) originated from full-length cDNA clones and resulted in a set of 149 genes.
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Affiliation(s)
- C M R Santos
- Embrapa Genetic Resources and Biotechnology, Caixa Postal 02372, Brasilia, CEP 70.770-900, Distrito Federal, Brazil
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Cordeiro R, Olivencia P ER, Cardoso CF, Cortez DB, Kakinami E, Souza JJ, Souza MT, Fernandes RA, Guercia RF, Adoni T. [Mortality risk measure inequalities among workers in Southeast Brazil]. Rev Saude Publica 1999; 33:593-601. [PMID: 10689376 DOI: 10.1590/s0034-89101999000600011] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [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
INTRODUCTION The main causes of illness and death in Brazil have been migrating backwards into the younger population during the last few years, increasing especially in the more productive age groups. Given the relationship between work and health/disease process, the hypothesis to be considered is that this phenomenon is partially due to the deterioration of workplace conditions. To contribute to investigating this hypothesis, this study estimates mortality risk indicators for the population of Botucatu, in the Southeast region of Brazil, classified according to their occupation. METHODS Standardized mortality coefficient, standardized risk ratio, and years of potential life lost were calculated for the inhabitants of Botucatu who died after their 10th birthday, between January 1997 and March 1998, and classified according to their occupation and main cause of death. Occupational and medical information was obtained by interviewing families of the deceased and their doctors, and checking medical files. RESULTS The standardized mortality coefficient ranged from 0.6 to 39.9 deaths/1000 workers in different occupations. The years of potential life lost ranged form 33 to 334 years/1000 workers. The ranking of causes of death varied according to occupation and the mortality risk considered. CONCLUSION The risk measures analyzed showed a high heterogeneity when associated to occupation and causes of death, which reflects the great social inequality existing in the studied population.
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Affiliation(s)
- R Cordeiro
- Departamento de Saúde Pública, da Faculdade de Medicina de Botucatu, Universidade Estadual Paulista, Botucatu, SP, Brasil
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Cordeiro R, Peñaloza ER, Cardoso CF, Cortez DB, Kakinami E, Souza JJ, Souza MT, Fernandes RA, Guercia RF, Adoni T. [Validity of information on occupation and principal cause on death certificates in Botucatu, Sao Paulo]. CAD SAUDE PUBLICA 1999; 15:719-28. [PMID: 10633194 DOI: 10.1590/s0102-311x1999000400006] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [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
The aim of this paper was to evaluate the accuracy of data on death certificates for occupation and main cause of death. Measure of agreement was assessed comparing data from death certificates with those from both medical records and next-of-kin interviews, analyzing information for 552 residents of Botucatu, Southeast Brazil, who died in 1997. Kappa coefficients of 0.31 (95% C.I. 0. 29-0.34) and 0.76 (95% C.I. 0.75-0.76) were obtained for data on occupation and main cause of death, coded by a Brazilian two-digit classification and the three-digit ICD-10 classification, respectively. One can conclude that, although quality of the main cause of death is acceptable for pilot studies, data on occupation taken only from death certificates is not accurate enough to be used in epidemiological research.
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Affiliation(s)
- R Cordeiro
- Departamento de Saúde Pública, Faculdade de Medicina de Botucatu, Universidade Estadual de São Paulo, C. P. 543, Botucatu, SP 18618-970, Brasil
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de Mello AV, Santos CM, Silva JL, Souza MT, Portilho MA, Guimarães AV, Freitas RG, Silvério JW. In situ saphenous vein arterial bypass for infrainguinal revascularization: initial experience using an open technique. INT ANGIOL 1991; 10:126-32. [PMID: 1765713] [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: 12/28/2022]
Abstract
The authors describe their initial experience with the use of the in situ saphenous vein arterial by-pass technique for infrainguinal revascularization. From December 1986 to August 1989, we performed 101 in situ saphenous vein arterial by-passes. From these 101 by-pass, 18 composite or partial in situ vein by-passes (in situ + reversed vein) and 2 extra-anatomical sequencial by-passes (one axillofemoral and one cross-over femorofemoral proximal by-passes extended by in situ saphenous vein femoropopliteal arterial by-passes) were withdrawn from the statistics, with the purpose of analysing the natural evolution of the in situ vein arterial by-pass without the insertion of reversed vein segments and/or the influence of artificial grafts to improve arterial inflow. Therefore only 81 in situ by-pass cases will be analysed in the present paper. From these 81 cases, 44 (54.3%) were performed in diabetic patients and limb salvage was the indication for by-pass in 63 (81%). The saphenous vein valves were rendered incompetent utilising the retrograde Mills-Leather valvulotome and exposing the greater saphenous vein with a continuous incision. In the 81 cases, wound complications occurred in 18 limbs (22%) and operative mortality (30 days) was 6.1%. Primary cumulative patency rate of the 81 cases was 77% and secondary cumulative patency rate was 80%, at the end of the analysed period. The open technique, using a retrograde valvulotome and exposing the entire conduit of the greater saphenous vein, became our preferred technique for infrainguinal revascularization.
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Affiliation(s)
- A V de Mello
- Vascular Service, Jacarepaguá General Hospital, National Institute of Social Welfare, Rio de Janeiro, Brazil
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Bhalla S, Souza MT. [Genetics of yellow-larva and ruby-eye mutants in the mosquito Culex pipiens fatigans in Brazil (author's transl)]. Rev Bras Pesqui Med Biol 1975; 8:23-6. [PMID: 1153826] [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: 12/25/2022]
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