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Wang E, Otamendi T, Li LC, Hoens AM, Wilhelm L, Bubber V, PausJenssen E, McKinnon A, McQuitty S, English K, Silva AS, Leese J, Zarin W, Tricco AC, Hamilton CB. Researcher-patient partnership generated actionable recommendations, using quantitative evaluation and deliberative dialogue, to improve meaningful engagement. J Clin Epidemiol 2023; 159:49-57. [PMID: 37182587 DOI: 10.1016/j.jclinepi.2023.05.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 04/25/2023] [Accepted: 05/01/2023] [Indexed: 05/16/2023]
Abstract
OBJECTIVES To demonstrate how the 22-item Patient Engagement in Research Scale (PEIRS-22) can be used to develop recommendations for improving the meaningfulness of patient engagement. STUDY DESIGN AND SETTING PEIRS-22 previously captured quantitative evaluation data from 15 patient partners in a self-study of the Strategy for Patient-Oriented Research (SPOR) Evidence Alliance. Guided by deliberative dialogue, the current study involved 3 steps: (1) In-depth analysis and interpretation of the PEIRS-22 data produced a lay evidence summary with identified areas for improvement of meaningful engagement; (2) A 3-hour virtual workshop with patient partners and researchers generated initial recommendations; and (3) In two successive post-workshop surveys, ratings by workshop invitees led to consensus on the recommendations. RESULTS Twenty-five participants attended the workshops and dialogued on 8 areas for improvement identified from the PEIRS-22 data. Twenty-eight unique initial recommendations led to consensus on 14 key recommendations organized across 4 categories: setting expectations for all team members, building trust and ongoing communication, providing opportunities to enhance learning and to develop skills, and acknowledging contributions of patient partners. CONCLUSION Using PEIRS-22 data within a deliberate dialogue elucidated 14 actionable recommendations to support ongoing improvement of patient engagement at SPOR Evidence Alliance, a pan-Canadian health research initiative.
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Affiliation(s)
- Ellen Wang
- Department of Physical Therapy, University of British Columbia, 2177 Wesbrook Mall, Vancouver, British Columbia, Canada; Arthritis Research Canada, 230 - 2238 Yukon Street, Vancouver, British Columbia, Canada
| | - Thalia Otamendi
- Department of Physical Therapy, University of British Columbia, 2177 Wesbrook Mall, Vancouver, British Columbia, Canada; Arthritis Research Canada, 230 - 2238 Yukon Street, Vancouver, British Columbia, Canada
| | - Linda C Li
- Department of Physical Therapy, University of British Columbia, 2177 Wesbrook Mall, Vancouver, British Columbia, Canada; Arthritis Research Canada, 230 - 2238 Yukon Street, Vancouver, British Columbia, Canada
| | - Alison M Hoens
- Department of Physical Therapy, University of British Columbia, 2177 Wesbrook Mall, Vancouver, British Columbia, Canada; Arthritis Patient Advisory Board of Arthritis Research Canada, 2238 Yukon Street, Vancouver, British Columbia, Canada
| | - Linda Wilhelm
- SPOR Evidence Alliance, 209 Victoria St, Toronto, Ontario, Canada; Canadian Arthritis Patient Alliance, Ottawa, Ontario, Canada
| | - Vikram Bubber
- SPOR Evidence Alliance, 209 Victoria St, Toronto, Ontario, Canada; Patient Voices Network, BC Patient Safety and Quality Council, 201-750 Pender St W, Vancouver, British Columbia, Canada
| | - Elliot PausJenssen
- SPOR Evidence Alliance, 209 Victoria St, Toronto, Ontario, Canada; Saskatoon Council on Aging, 2020 College Dr, Saskatoon, Saskatchewan, Canada
| | - Annette McKinnon
- Arthritis Patient Advisory Board of Arthritis Research Canada, 2238 Yukon Street, Vancouver, British Columbia, Canada; SPOR Evidence Alliance, 209 Victoria St, Toronto, Ontario, Canada; Canadian Arthritis Patient Alliance, Ottawa, Ontario, Canada
| | - Shanon McQuitty
- Arthritis Patient Advisory Board of Arthritis Research Canada, 2238 Yukon Street, Vancouver, British Columbia, Canada; SPOR Evidence Alliance, 209 Victoria St, Toronto, Ontario, Canada
| | - Kelly English
- Arthritis Patient Advisory Board of Arthritis Research Canada, 2238 Yukon Street, Vancouver, British Columbia, Canada; SPOR Evidence Alliance, 209 Victoria St, Toronto, Ontario, Canada
| | - Aline S Silva
- University of British Columbia, Vancouver, British Columbia, Canada
| | - Jenny Leese
- Arthritis Research Canada, 230 - 2238 Yukon Street, Vancouver, British Columbia, Canada; School of Epidemiology and Public Health, University of Ottawa, 600 Peter Morand Crescent, Room 101, Ottawa, Ontario, Canada
| | - Wasifa Zarin
- SPOR Evidence Alliance, 209 Victoria St, Toronto, Ontario, Canada; Knowledge Translation Program, Li Ka Shing Knowledge Institute, St. Michael's Hospital, Unity Health Toronto, 209 Victoria Street, East Building, Toronto, Ontario, Canada
| | - Andrea C Tricco
- SPOR Evidence Alliance, 209 Victoria St, Toronto, Ontario, Canada; Knowledge Translation Program, Li Ka Shing Knowledge Institute, St. Michael's Hospital, Unity Health Toronto, 209 Victoria Street, East Building, Toronto, Ontario, Canada; Epidemiology Division and Health Policy, Management, and Evaluation, Dalla Lana School of Public Health, University of Toronto, 155 College Street, 6th floor, Toronto, Ontario, Canada; Queen's Collaboration for Health Care Quality: A JBI Centre of Excellence, Queen's University School of Nursing, 92 Barrie Street, Kingston, Ontario, Canada
| | - Clayon B Hamilton
- Arthritis Research Canada, 230 - 2238 Yukon Street, Vancouver, British Columbia, Canada; Faculty of Health Sciences, Simon Fraser University, 8888 University Drive, Surrey, British Columbia, Canada; BC Mental Health and Substance Use Services, Provincial Health Services Authority, 4949 Heather Street, Vancouver, British Columbia, Canada.
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Mengarda AC, Silva TC, Silva AS, Roquini DB, Fernandes JPS, de Moraes J. Toward anthelmintic drug candidates for toxocariasis: Challenges and recent developments. Eur J Med Chem 2023; 251:115268. [PMID: 36921525 DOI: 10.1016/j.ejmech.2023.115268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2022] [Revised: 03/07/2023] [Accepted: 03/07/2023] [Indexed: 03/18/2023]
Abstract
Infections caused by parasitic helminths rank among the most prevalent infections of humans and animals. Toxocariasis, caused by nematodes of the genus Toxocara, is one of the most widespread and economically important zoonotic parasitic infections that humans share with dogs and cats. Despite the completion of the Toxocara canis draft genome project, which has been an important step towards advancing the understanding of this parasite and the search for drug targets, the treatment of toxocariasis has been dependent on a limited set of drugs, necessitating the search for novel anthelmintic agents, specially against Toxocara larvae in tissues. Given that research, development, and innovation are crucial to finding appropriate solutions in the fight against helminthiasis, this paper reviews the progress made in the discovery of anthelmintic drug candidates for toxocariasis. The main compounds reported in the recent years regards on analogues of albendazole, reactive quinone derivatives and natural produts and its analogues. Nanoparticles and formulations were also reviewed. The in vitro and/or in vivo anthelmintic properties of such alternatives are herein discussed as well as the opportunities and challenges for treatment of human toxocariasis. The performed review clarify that the scarcity of validated molecular targets and limited chemical space explored are the main bottlenecks for advancing in the field of anti-Toxocara agents.
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Affiliation(s)
- Ana C Mengarda
- Research Center on Neglected Diseases, Guarulhos University, Praça Tereza Cristina 229, 07023-070, Guarulhos, SP, Brazil.
| | - Tais C Silva
- Research Center on Neglected Diseases, Guarulhos University, Praça Tereza Cristina 229, 07023-070, Guarulhos, SP, Brazil.
| | - Aline S Silva
- Research Center on Neglected Diseases, Guarulhos University, Praça Tereza Cristina 229, 07023-070, Guarulhos, SP, Brazil.
| | - Daniel B Roquini
- Research Center on Neglected Diseases, Guarulhos University, Praça Tereza Cristina 229, 07023-070, Guarulhos, SP, Brazil.
| | - João Paulo S Fernandes
- Department of Pharmaceutical Sciences, Universidade Federal de São Paulo, campus Diadema, Rua São Nicolau 210, 09913-030, Diadema, SP, Brazil.
| | - Josué de Moraes
- Research Center on Neglected Diseases, Guarulhos University, Praça Tereza Cristina 229, 07023-070, Guarulhos, SP, Brazil.
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Silva AS, Cortinhas CS, Acedo TS, Morenz MJF, Lopes FCF, Arrigoni MB, Ferreira MH, Jaguaribe TL, Ferreira LD, Gouvêa VN, Pereira LGR. Effects of feeding 25-hydroxyvitamin D 3 with an acidogenic diet during the prepartum period in dairy cows: Mineral metabolism, energy balance, and lactation performance of Holstein dairy cows. J Dairy Sci 2022; 105:5796-5812. [PMID: 35570040 DOI: 10.3168/jds.2021-21727] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [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: 12/18/2021] [Accepted: 03/21/2022] [Indexed: 11/19/2022]
Abstract
Our objective was to determine the effects of feeding 25-hydroxyvitamin D3 [25(OH)D3], or vitamin D3 (cholecalciferol) on plasma, mineral, and metabolite concentrations, mineral balance, mineral excretion, rumination, energy balance, and milk production of dairy cows. We hypothesized that supplementing 3 mg/d of 25(OH)D3 during the prepartum period would be more effective than supplementing vitamin D3 at the National Research Council (2001) levels to minimize calcium imbalance during the transition period and improve milk production of dairy cows. Forty multiparous, pregnant nonlactating-Holstein cows were enrolled in this study. Body weight, body condition score, parity, and milk yield in the previous lactation (mean ± standard deviation) were 661 ± 59.2, 3.46 ± 0.35, 1.79 ± 0.87, and 33.2 ± 6.43 kg/d, respectively. Cows were enrolled into the blocks (n = 20 for each treatment) at 30 d of the expected day of calving to receive an acidogenic diet (373 g/kg of neutral detergent fiber and 136 g/kg of crude protein, dry matter basis; -110 mEq/kg) associated with the treatments: (1) control (CTRL), vitamin D3 at 0.625 mg/d (equivalent to 25,000 IU of vitamin D3/d) or (2) 25(OH)D3 at 3 mg/d (equivalent to 120,000 IU of vitamin D3/d). All cows were fed with the base ration for 49 d after calving. Blood samples were taken on d 7, 0, 1, 2, 21, and 42, relative to calving. No effect of treatment was observed for prepartum dry matter intake or body condition score. A trend for increase of ionized Ca was observed for the cows fed 25(OH)D3, compared with the CTRL, but no effect of treatment was detected for total Ca or total P. Feeding 25(OH)D3 increased colostrum yield. The plasmatic concentration of 25-hydroxyvitamin D3 was increased with 25(OH)D3 supplementation. 25-Hydroxyvitamin D3 supplementation increased plasma glucose concentration at parturition. The postpartum dry matter intake was not influenced by treatments. Feeding 25(OH)D3 increases milk yield, 3.5% fat-corrected milk, and energy-corrected milk and improves milk yield components in early lactation. Overall, these findings suggest that 25(OH)D3 at 3 mg/d can improve the energy metabolism and lactation performance, compared with the current-feeding practice of supplementing vitamin D3 at 0.625 mg/d.
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Affiliation(s)
- A S Silva
- Department of Animal Production, School of Veterinary Medicine and Animal Science, São Paulo State University "Júlio de Mesquita Filho", Botucatu, SP, 18618-68, Brazil
| | - C S Cortinhas
- DSM Nutritional Products, São Paulo, SP, 04543-907, Brazil
| | - T S Acedo
- DSM Nutritional Products, São Paulo, SP, 04543-907, Brazil
| | - M J F Morenz
- Embrapa Dairy Cattle, Juiz de Fora, MG, 36038-330, Brazil.
| | - F C F Lopes
- Embrapa Dairy Cattle, Juiz de Fora, MG, 36038-330, Brazil
| | - M B Arrigoni
- Department of Animal Production, School of Veterinary Medicine and Animal Science, São Paulo State University "Júlio de Mesquita Filho", Botucatu, SP, 18618-68, Brazil
| | - M H Ferreira
- Department of Animal Sciences, Federal University of Juiz de Fora, Juiz de Fora, MG, 36036-900, Brazil
| | - T L Jaguaribe
- Department of Animal Sciences, Federal University of Juiz de Fora, Juiz de Fora, MG, 36036-900, Brazil
| | - L D Ferreira
- Department of Veterinary Clinics and Surgery, School of Veterinary Medicine, Federal University of Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil
| | - V N Gouvêa
- Texas A&M AgriLife Research and Extension Center, Amarillo 79106
| | - L G R Pereira
- Embrapa Dairy Cattle, Juiz de Fora, MG, 36038-330, Brazil
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Luz RT, Azevedo WTA, Silva AS, Lessa CSS, Maia VC, Aguiar VM. Diversity of Calliphoridae and Mesembrinellidae (Diptera: Oestroidea) in a Mangrove, Restinga, and Forest Landscapes From a Lagoon Complex on an Atlantic Forest Coastline (Rio de Janeiro, Brazil). J Med Entomol 2020; 57:1758-1767. [PMID: 32473017 DOI: 10.1093/jme/tjaa091] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 02/12/2020] [Indexed: 06/11/2023]
Abstract
Diptera Mesembrinellidae present great ecological importance as potential bioindicators and Calliphoridae stand out for their medical-sanitary importance as potential vectors of pathogens and causes of human and animal diseases such as myiasis. They beneficially aid in elucidating crimes in forensic entomology, contributing to determine the postmortem interval (PMI) and assisting in the healing process of necrotic wounds in larval therapy. This study aimed to inventory the Calliphoridae and Mesembrinellidae fauna in order to evaluate structural parameters and to apply faunal indexes in catching species in the Itaipu-Piratininga lagoon complex, in Niterói (Rio de Janeiro), Brazil. The collections were carried out monthly from September 2015 to August 2016 with fish bait (sardines) exposed for 48 h, totaling six traps installed in three physiognomies (mangrove, ombrophilous forest, and restinga). In total, 9,773 individuals were captured, divided into two families, five genera, and 11 species. Chrysomya megacephala (Fabricius, 1794) was the predominant species, while Mesembrinella bellardiana (Aldrich, 1922) was the least representative species, indicating the preservation level of this ecosystem. Ombrophilous forest was the physiognomy with greater diversity and restinga was the physiognomy with greater species dominance. The similarity index indicated greater similarity among the mangrove and restinga populations.
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Affiliation(s)
- R T Luz
- Programa de Pós-Graduação em Ciências Biológicas (Zoologia), Museu Nacional, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - W T A Azevedo
- Programa de Pós-Graduação em Biologia Animal, Universidade Federal Rural do Rio de Janeiro, Rio de Janeiro, Brazil
| | - A S Silva
- Departamento de Matemática Estatística, Universidade Federal do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - C S S Lessa
- Departamento de Microbiologia e Parasitologia, Universidade Federal do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - V C Maia
- Programa de Pós-Graduação em Ciências Biológicas (Zoologia), Museu Nacional, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - V M Aguiar
- Departamento de Microbiologia e Parasitologia, Universidade Federal do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
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Almeida J, Craveiro R, Faria P, Silva AS, Mateus EP, Barreiros S, Paiva A, Ribeiro AB. Electrodialytic removal of tungsten and arsenic from secondary mine resources - Deep eutectic solvents enhancement. Sci Total Environ 2020; 710:136364. [PMID: 31926419 DOI: 10.1016/j.scitotenv.2019.136364] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 11/29/2019] [Accepted: 12/25/2019] [Indexed: 06/10/2023]
Abstract
Tungsten is a critical raw material for European and U.S. economies. Tungsten mine residues, usually considered an environmental burden due to e.g. arsenic content, are also secondary tungsten resources. The electrodialytic (ED) process and deep eutectic solvents (DES) have been successfully and independently applied for the extraction of metals from different complex environmental matrices. In this study a proof of concept demonstrates that coupling DES in a two-compartment ED set-up enhances the removal and separation of arsenic and tungsten from Panasqueira mine secondary resources. Choline chloride with malonic acid (1:2), and choline chloride with oxalic acid (1:1) were the DES that in batch extracted the average maximum contents of arsenic (16%) and tungsten (9%) from the residues. However, when ED was operated at a current intensity of 100 mA for 4 days, the extraction yields increased 22% for arsenic and 11% for tungsten, comparing to the tests with no current. From the total arsenic and tungsten extracted, 82% and 77% respectively were successfully removed from the matrix compartment, as they electromigrated to the anolyte compartment, from where these elements can be further separated. This achievement potentiates circular economy, as the final treated residue could be incorporated in construction materials production, mitigating current environmental problems in both mining and construction sectors.
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Affiliation(s)
- J Almeida
- CENSE, Department of Sciences and Environmental Engineering, School of Science and Technology, NOVA University Lisbon, Caparica Campus, 2829-516 Caparica, Portugal; CERIS and Department of Civil Engineering, School of Science and Technology, NOVA University Lisbon, Caparica Campus, 2829-516 Caparica, Portugal.
| | - R Craveiro
- LAQV@REQUIMTE, Department of Chemistry, School of Science and Technology, NOVA University Lisbon, Caparica Campus, 2829-516 Caparica, Portugal
| | - P Faria
- CERIS and Department of Civil Engineering, School of Science and Technology, NOVA University Lisbon, Caparica Campus, 2829-516 Caparica, Portugal
| | - A S Silva
- Department of Materials, National Laboratory for Civil Engineering, 1700-066 Lisbon, Portugal
| | - E P Mateus
- CENSE, Department of Sciences and Environmental Engineering, School of Science and Technology, NOVA University Lisbon, Caparica Campus, 2829-516 Caparica, Portugal
| | - S Barreiros
- LAQV@REQUIMTE, Department of Chemistry, School of Science and Technology, NOVA University Lisbon, Caparica Campus, 2829-516 Caparica, Portugal
| | - A Paiva
- LAQV@REQUIMTE, Department of Chemistry, School of Science and Technology, NOVA University Lisbon, Caparica Campus, 2829-516 Caparica, Portugal
| | - A B Ribeiro
- CENSE, Department of Sciences and Environmental Engineering, School of Science and Technology, NOVA University Lisbon, Caparica Campus, 2829-516 Caparica, Portugal.
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Félix DO, Silva AS, Fialho ATS, Oliveira CJP, Brito CO, Tavernari FC, Ribeiro Jr V, Rostagno HS, Albino LFT. Fat-Soluble Vitamin Supplementation Levels in Diets for Laying Hens from 28 to 44 Weeks of Age. Braz J Poult Sci 2020. [DOI: 10.1590/1806-9061-2019-1239] [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] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- DO Félix
- Federal University of Viçosa, Brazil
| | - AS Silva
- Federal University of Sergipe, Brazil
| | | | | | - CO Brito
- Federal University of Sergipe, Brazil
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Buffoni L, Piva MM, Baska P, Januszkiewicz K, Norbury LJ, Prior KC, Dezen D, Silva AS, Wedrychowicz H, Mendes RE. Immunization with the recombinant myosin regulatory light chain (FhrMRLC) in Adjuplex® adjuvant elicits a Th1-biased immune response and a reduction of parasite burden in Fasciola hepatica infected rats. Parasitol Int 2019; 75:102037. [PMID: 31841659 DOI: 10.1016/j.parint.2019.102037] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [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: 09/09/2019] [Revised: 12/07/2019] [Accepted: 12/07/2019] [Indexed: 01/22/2023]
Abstract
The aim of this study was to assess the immune response and the protective efficacy elicited by the vaccination with the recombinant Fasciola hepatica myosin regulatory light chain (FhrMRLC) in Adjuplex® adjuvant against the infection with F. hepatica in rats. Four groups of 15 animals each were used for the study, one group was immunized with the recombinant F. hepatica MRLC in Adjuplex® adjuvant and the other groups remained as adjuvant, positive and negative control groups. The parasitological study showed that a statistically significant reduction of 65.1% and 82.1% in fluke burden and fecal egg count, respectively, was detected in vaccinated animals. In addition, vaccination with FhrMRLC induced a well-defined humoral and cellular immune response characterized by a significant production of specific IgG and IL-2, IL-12, TNF-α and IFN-γ; which confirms the immunogenic capacity of the FhrMRLC.
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Affiliation(s)
- L Buffoni
- Department of Animal Health, Faculty of Veterinary, University of Cordoba, Campus de Rabanales, Ctra. Madrid-Cádiz km 376, 14014 Córdoba, Spain.
| | - M M Piva
- Laboratory of Veterinary Pathology, Federal Institute of Santa Catarina (IFC), Rod. SC 283, km 08, CP 58, Concórdia, SC 89703-720, Brazil
| | - P Baska
- Department of Preclinical Sciences, Faculty of Veterinary Medicine, Warsaw University of Life Sciences (SGGW), 8 Ciszewkiego, 02-786 Warsaw, Poland
| | - K Januszkiewicz
- Witold Stefański Institute of Parasitology, Polish Academy of Sciences, Twarda 51/55, 00-818 Warsaw, Poland
| | - L J Norbury
- School of Science, RMIT University, Bundoora 3083, Victoria, Australia
| | - K C Prior
- Laboratory of Veterinary Microbiology, Federal Institute of Santa Catarina (IFC), Rod. SC 283, km 08, CP 58, Concórdia, SC 89703-720, Brazil
| | - D Dezen
- Laboratory of Veterinary Microbiology, Federal Institute of Santa Catarina (IFC), Rod. SC 283, km 08, CP 58, Concórdia, SC 89703-720, Brazil
| | - A S Silva
- Department of Animal Science, Santa Catarina State University (UDESC), Sete de Setembro 77D, Chapecó, SC 89806-152, Brazil
| | - H Wedrychowicz
- Witold Stefański Institute of Parasitology, Polish Academy of Sciences, Twarda 51/55, 00-818 Warsaw, Poland
| | - R E Mendes
- Laboratory of Veterinary Pathology, Federal Institute of Santa Catarina (IFC), Rod. SC 283, km 08, CP 58, Concórdia, SC 89703-720, Brazil
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Castelo A, Rio P, Alves S, Silva AS, Mano T, Ferreira V, Bras P, Ferreira R. P2516Cardiac rehabilitation program - experience and outcomes in a tertiary center. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.0845] [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
Introduction
Cardiac rehabilitation (CR) programs are effective in improving functional capacity and reducing mortality. The level of adherence to them seems to be less than the ideal, and some factors can predict non-compliance with impact on outcomes.
Purpose
The aim was to characterize the population of the cardiac rehabilitation (CR) appointment, determine factors predictive of compliance with the standard CR exercise program and evaluate the benefits of the program.
Methods
Retrospective analysis of patients in a CR appointment at a single center between 2014 and 2017. Patients (P) were divided into two groups: compliance >80% of the program (GI) and non-compliance (GII). We assessed clinical, laboratory, and echocardiographic characteristics and determined predictors for compliance and compared the follow-up to date.
Results
270P (83% men) were included, with a mean age of 57 years. The P had a median follow up of 35 months, with an interquartil interval of 28 months. The majority (92.5%) had at least one cardiovascular risk factor (25.1% diabetes, 57.1% hypertension, 72.8% dyslipidemia, 75.8% obesity or weight excess, with mean body mass index (BMI) 27.3±3.46, 16.7% family history, 19.8% acute myocardial infarction (AMI), 48.2% smoking). 99% of the patients were medicated (93.7% acetylsalicylic acid, 67.3% clopidogrel, 24.1% ticagrelor, 95.6% beta-blocker, 93.7% ACEI/ARB, 95.5% statin). 144P (53.3%) were not from Lisbon. Most patients (77%) were referred after AMI, 8.9% with heart failure (HF), 8.5% with stable or unstable coronary disease and 1.9% with valvulopathy. 69P (25.6%) attended >80% of the CR program. Death occurred in 4.4% of the P (71.4% cardiovascular causes) and 27% had at least 1 hospitalization. Age, sex, economic insufficiency and residence local (Lisbon or non-Lisbo) were not predictors of non-compliance (p=0.859, p=0.656, p=0.914 and p=0.515 respectively). Predictors of non-compliance were higher IMC (CC=-0.141, p=0.014), higher cholesterol (CC=-0.140, p=0.016), higher C reactive protein (CC=-0.120, p=0.043), higher HbA1c (CC=-0.170, p=0.008) and CR for heart failure (HF) (OR = 0.715, IC [0.659–0.775], p=0.002). Of these, higher HbA1C (p=0.018) and CR for HF (p=0.034) were independent predictors. Compliance with>80% of the program was associated with lower overall mortality (OR = 0.732, IC [0.679–0.788], p=0.037), but not as an independent factor (p=0.378). The only independent predictor of mortality were BNP (p<0.0001).
Conclusion
Of the patients referred to the CR consultation one fourth concludes the program. Several factors can predict non-compliance, with higher HbA1c and CR for HF being independent predictors. Compliance with the CR program is associated with lower overall mortality.
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Affiliation(s)
- A Castelo
- Hospital de Santa Marta, Lisbon, Portugal
| | - P Rio
- Hospital de Santa Marta, Lisbon, Portugal
| | - S Alves
- Hospital de Santa Marta, Lisbon, Portugal
| | - A S Silva
- Hospital de Santa Marta, Lisbon, Portugal
| | - T Mano
- Hospital de Santa Marta, Lisbon, Portugal
| | - V Ferreira
- Hospital de Santa Marta, Lisbon, Portugal
| | - P Bras
- Hospital de Santa Marta, Lisbon, Portugal
| | - R Ferreira
- Hospital de Santa Marta, Lisbon, Portugal
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Castelo A, Rio P, Silva AS, Alves S, Bras P, Mano T, Ferreira V, Ferreira R. P2510Cardiorespiratory optimal point as a predictor of outcomes in patients enrolled in a cardiac rehabilitation program. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.0839] [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
Introduction
The cardiopulmonary exercise test (CEPT) allows the evaluation of peak and sub-maximal tolerance to the effort, giving us relevant information for clinical decisions. Evidence has emerged that Cardiorespiratory Optimal Point (COP)>30, calculated as the minimum ratio between ventilation and oxygen (VE/VO2) may be a good predictor of events.
Purpose
The aim was to characterize the population of the cardiac rehabilitation (CR) appointment that performed CEPT, evaluate COP as a predictor of events and determine the best cut off for our population.
Methods
Retrospective analysis of CR appointment patients who performed CEPT between 2014 and 2017 in a single center. We compared the mortality and hospitalizations according to COP and COP>30. We established the appropriate Cut Off for our population and compared the same with the occurrence of events.
Results
207Patients (P) (83.6% men) were included, with a mean age of 57 years. The mean COP was 23.6±5.8 (IC [24.06–25.66]). 15.9% P had COP >30 and 33.8% had COP<22. The majority (96.6%) had a cardiovascular disease or risk factors and 99% were medicated. The majority (87.9%) was referred for CR with isquemic cardiopathy (AMI or stable or unstable coronary disease), 9.2% with heart failure (HF) and 9.2% with valvulopathy. 6.9% P died from any cause, 33.8% had an hospitalization (78.6% from a cardiovascular reason). Higher COP values correlated with higher number of all causes hospitalizations (H) (CC = 0.123, p=0.032), cardiovascular H (CC = 0.123, p=0.032), heart failure H (CC = 0.189, p=0.001) and device placement H (CC = 0.173, p=0.003). COP did not correlate with mortality (p=0.453). The cut off of 30 only correlated with HF hospitalization in this population (OR = 5, IC [1.429–17.494] p=0.006). In our population, COP was a good predictor for all cause H and heart failure H (AUC = 0.8 in both). A cut off of 25 had a sensitivity (S) of 78% with a specificity (E) of 70% for all cause hospitalization and S 73% and E 68% for heart failure H. Values above this cut off correlate with more all cause H (OR = 1,928, IC [1.06–3.507], p=0.031) and heart failure H (OR = 5.63, IC [1,44–21.94]), p=0.006). COP was an independent predictor of all-cause H (p=0.018) and heart failure H (p<0.0001). Other independent predictors of HF hospitalization are BNP (p=0.0011) and ejection fraction (p<0.0001).
Conclusion
COP was a good independent predictor of all-cause hospitalizations and HF hospitalization. In our population the cut off 25 for COP had the greatest S and E for predicting events. In our population this factor was not a good predictor of mortality.
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Affiliation(s)
- A Castelo
- Hospital de Santa Marta, Lisbon, Portugal
| | - P Rio
- Hospital de Santa Marta, Lisbon, Portugal
| | - A S Silva
- Hospital de Santa Marta, Lisbon, Portugal
| | - S Alves
- Hospital de Santa Marta, Lisbon, Portugal
| | - P Bras
- Hospital de Santa Marta, Lisbon, Portugal
| | - T Mano
- Hospital de Santa Marta, Lisbon, Portugal
| | - V Ferreira
- Hospital de Santa Marta, Lisbon, Portugal
| | - R Ferreira
- Hospital de Santa Marta, Lisbon, Portugal
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10
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Borges ED, Vireque AA, Berteli TS, Ferreira CR, Silva AS, Navarro PA. An update on the aspects of Zika virus infection on male reproductive system. J Assist Reprod Genet 2019; 36:1339-1349. [PMID: 31147867 PMCID: PMC6642278 DOI: 10.1007/s10815-019-01493-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Accepted: 05/17/2019] [Indexed: 01/07/2023] Open
Abstract
Zika virus (ZIKV) is mainly transmitted through Aedes mosquito bites, but sexual and post-transfusion transmissions have been reported. During acute infection, ZIKV is detectable in most organs and body fluids including human semen. Although it is not currently epidemic, there is a concern that the virus can still reemerge since the male genital tract might harbor persistent reservoirs that could facilitate viral transmission over extended periods, raising concerns among public health and assisted reproductive technologies (ART) experts and professionals. So far, the consensus is that ZIKV infection in the testes or epididymis might affect sperm development and, consequently, male fertility. Still, diagnostic tests have not yet been adapted to resource-restricted countries. This manuscript provides an updated overview of the cellular and molecular mechanisms of ZIKV infection and reviews data on ZIKV persistence in semen and associated risks to the male reproductive system described in human and animal models studies. We provide an updated summary of the impact of the recent ZIKV outbreak on human-ART, weighing on current recommendations and diagnostic approaches, both available and prospective, with special emphasis on mass spectrometry-based biomarker discovery. In the light of the identified gaps in our accumulated knowledge on the subject, we highlight the importance for couples seeking ART to follow the constantly revised guidelines and the need of specific ZIKV diagnosis tools for semen screening to contain ZIKV virus spread and make ART safer.
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Affiliation(s)
- E D Borges
- Department of Obstetrics and Gynecology, Faculty of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, 14049-900, Brazil.
- Invitra - Assisted Reproductive Technologies LTD, Supera Innovation and Technology Park, Ribeirão Preto, São Paulo, 14056-680, Brazil.
| | - A A Vireque
- Invitra - Assisted Reproductive Technologies LTD, Supera Innovation and Technology Park, Ribeirão Preto, São Paulo, 14056-680, Brazil
| | - T S Berteli
- Department of Obstetrics and Gynecology, Faculty of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, 14049-900, Brazil
| | - C R Ferreira
- Metabolite Profiling Facility, Bindley Bioscience Center, Purdue University, West Lafayette, IN, USA
| | - A S Silva
- Department of Social Medicine, Faculty of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, 14049-900, Brazil
| | - P A Navarro
- Department of Obstetrics and Gynecology, Faculty of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, 14049-900, Brazil
- National Institutes of Hormones and Woman's Health, CNPq, Brasilia, Brazil
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11
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Oliveira AJS, Cabral LS, Silva AS, Souza VC, Florêncio SL, Telino-Júnior WR, Lyra-Neves RM. First record of the buff-fronted owl, Aegolius harrisii - () (Aves - Strigidae) from the Brazilian state of Pernambuco. BRAZ J BIOL 2019; 80:190-191. [PMID: 31066766 DOI: 10.1590/1519-6984.202857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Accepted: 10/08/2018] [Indexed: 11/22/2022] Open
Affiliation(s)
- A J S Oliveira
- Programa de Pós-graduação em Ecologia, Universidade Federal Rural de Pernambuco - UFRPE, Rua Dom Manoel de Medeiros, s/n, Dois Irmãos, CEP 52171-900, Recife, PE, Brasil.,Unidade Acadêmica de Garanhuns - UAG, Laboratório de Ensino de Zoologia, Universidade Federal Rural de Pernambuco - UFRPE, Avenida Bom Pastor, Boa Vista, CEP 55296-901, Garanhuns, PE, Brasil
| | - L S Cabral
- Programa de Pós-graduação em Ecologia, Universidade Federal Rural de Pernambuco - UFRPE, Rua Dom Manoel de Medeiros, s/n, Dois Irmãos, CEP 52171-900, Recife, PE, Brasil.,Unidade Acadêmica de Garanhuns - UAG, Laboratório de Ensino de Zoologia, Universidade Federal Rural de Pernambuco - UFRPE, Avenida Bom Pastor, Boa Vista, CEP 55296-901, Garanhuns, PE, Brasil
| | - A S Silva
- Programa de Pós-graduação em Ecologia, Universidade Federal Rural de Pernambuco - UFRPE, Rua Dom Manoel de Medeiros, s/n, Dois Irmãos, CEP 52171-900, Recife, PE, Brasil.,Unidade Acadêmica de Garanhuns - UAG, Laboratório de Ensino de Zoologia, Universidade Federal Rural de Pernambuco - UFRPE, Avenida Bom Pastor, Boa Vista, CEP 55296-901, Garanhuns, PE, Brasil
| | - V C Souza
- Programa de Pós-graduação em Ecologia, Universidade Federal Rural de Pernambuco - UFRPE, Rua Dom Manoel de Medeiros, s/n, Dois Irmãos, CEP 52171-900, Recife, PE, Brasil.,Unidade Acadêmica de Garanhuns - UAG, Laboratório de Ensino de Zoologia, Universidade Federal Rural de Pernambuco - UFRPE, Avenida Bom Pastor, Boa Vista, CEP 55296-901, Garanhuns, PE, Brasil
| | - S L Florêncio
- Unidade Acadêmica de Garanhuns - UAG, Laboratório de Ensino de Zoologia, Universidade Federal Rural de Pernambuco - UFRPE, Avenida Bom Pastor, Boa Vista, CEP 55296-901, Garanhuns, PE, Brasil
| | - W R Telino-Júnior
- Programa de Pós-graduação em Ecologia, Universidade Federal Rural de Pernambuco - UFRPE, Rua Dom Manoel de Medeiros, s/n, Dois Irmãos, CEP 52171-900, Recife, PE, Brasil.,Unidade Acadêmica de Garanhuns - UAG, Laboratório de Ensino de Zoologia, Universidade Federal Rural de Pernambuco - UFRPE, Avenida Bom Pastor, Boa Vista, CEP 55296-901, Garanhuns, PE, Brasil
| | - R M Lyra-Neves
- Programa de Pós-graduação em Ecologia, Universidade Federal Rural de Pernambuco - UFRPE, Rua Dom Manoel de Medeiros, s/n, Dois Irmãos, CEP 52171-900, Recife, PE, Brasil.,Unidade Acadêmica de Garanhuns - UAG, Laboratório de Ensino de Zoologia, Universidade Federal Rural de Pernambuco - UFRPE, Avenida Bom Pastor, Boa Vista, CEP 55296-901, Garanhuns, PE, Brasil
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12
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Figueiredo FE, Santos RC, Silva AS, Valdívia AD, Oliveira-Neto LA, Griza S, Soares CJ, Faria-e-Silva AL. Ferrule Design Does Not Affect the Biomechanical Behavior of Anterior Teeth Under Mechanical Fatigue: An In Vitro Evaluation. Oper Dent 2019; 44:273-280. [DOI: 10.2341/17-296-l] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
SUMMARY
Objectives:
To investigate the survival and failure mode of fiber-post resin restorations over preparations with different ferrule designs when submitted to a fatigue load test.
Methods and Materials:
Fifty bovine incisors were selected and divided into five groups (n=10) according to ferrule design: a no-ferrule group, a 2-mm circumferential ferrule group, a 2-mm buccal ferrule group, a 2-mm lingual ferrule group, and a 2-mm buccal and lingual ferrule group. The fiberglass post was cemented and the composite core was built up and prepared, followed by cementation of a full composite crown. The samples were subjected to a cyclic fatigue test with loading applicator at 135°; a staircase approach was used until fracture. Survival (cycles to fracture) and failure modes were recorded. Survival data were analyzed with the log-rank test, while Kruskal-Wallis and Fisher exact tests were used to analyze failure mode data (α=0.05).
Results:
The median number of cycles to fracture ranged from 215,000 to 236,153. The log-rank test showed no statistically significant difference in survival rates among the groups (p=0.82). Regarding failure mode, three types were observed: I, post and/or core fracture; II, root fracture in the cervical third; and III, root fracture in the middle third. No statistical difference was observed among the groups (Kruskal-Wallis test, p=0.147).
Conclusion:
The ferrule design had no effect on fatigue resistance or failure mode of endodontically treated incisor teeth restored with a fiber post, composite core buildup, and composite crown.
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Affiliation(s)
| | - RC Santos
- Renan C Santos, BS student, Department of Materials Science and Engineering, Federal University of Sergipe, São Cristóvão, Brazil
| | - AS Silva
- Abraão S Silva, PhD student, Program in Materials Science and Engineering, Federal University of Sergipe, São Cristóvão, Brazil
| | - AD Valdívia
- Andrea D Valdívia, DDS, MS, PhD student, School of Dentistry, Operative Dentistry and Dental Materials, Federal University of Uberlândia, Minas Gerais, Brazil
| | - LA Oliveira-Neto
- Luiz A Oliveira-Neto, PhD, Department of Dentistry, Federal University of Sergipe, Lagarto, Brazil
| | - S Griza
- Sandro Griza, PhD, Department of Materials Science and Engineering, Federal University of Sergipe, São Cristóivão, Brazil
| | - CJ Soares
- Carlos J Soares, DDS, MS, PhD, School of Dentistry, Federal University of Uberlândia, Operative Dentistry and Dental Materials, Minas Gerais, Brazil
| | - AL Faria-e-Silva
- Andre L Faria-e-Silva, DDS, MD, PhD, Federal University of Sergipe, Department of Dentistry, Aracaju, Brazil
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13
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Abstract
Peritoneal dialysis (PD) penetration varies widely. Since the beginning of this therapy, indications have changed and outcomes have improved. In Portugal, PD still remains clearly underutilized. The results of a 20 year PD programme were evaluated: 312 cumulative patients, 48±16 years, 27% >60 years old, 27% diabetic, 59% with prior hemodialysis (HD). The main reason for admission was vascular access failure (48.7%). Admission due to patient preference has increased significantly between first and second decades of the programme (33% vs 47% (P<0.001)); 98 patients (31.4%) were treated with automated PD but this prescription increased to 43% of the active patients. A total of 376 Tenckhoff catheters were surgically implanted, recently by the Popovich-Moncrief technique (77 catheters): the cumulative survival was 82%, 64% and 50% at 1, 3 and 5 years, respectively. A better catheter survival was found in the last decade (85.7%, 69.6%, 54.8% versus 77.3%, 55.5%, 40.2%, at 1, 3 and 5 years, respectively (P=0.007). The patient and technique cumulative survivals were 91, 74, 55% and 85, 67, 41%, at 1, 3, and 5 years, respectively. The main drop-out was to hemodialysis (35.8%), followed by death (23.7%), and transplantation (21.5%). Peritonitis and access-related infections caused 35% of the transfer to HD. Cardiovascular events caused 58% of deaths. The median PD retention was 35.5 months. The rate of peritonitis has decreased to one episode /30 patient months. Hospital admission has also decreased to 4.8 days/patient year. This is a first report on long-term PD experience in Portugal. It has been an effective modality of renal replacement therapy, reflected by the growing patient preference in our PD programme. Experience, knowledge and new technical solutions have improved the outcomes.
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Affiliation(s)
- A S Rodrigues
- Department of Nephrology, Hospital Geral Santo Antonio, Porto, Portugal.
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14
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Morgado HS, Cysneiros CSS, Sousa CM, Stringhini JH, Ulhoa CJ, Silva AS, Fabino Neto R, Freitas PVDX, Oliveira HP, Batista LHC. Addition of Amylase from Aspergillus Awamori to the Diet of Broiler Chickens. Rev Bras Cienc Avic 2016. [DOI: 10.1590/1516-635x1804725-732] [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] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
| | | | - CM Sousa
- Federal Institute Goiano, Brazil
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15
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Brito AF, Silva AS, Souza ILL, Pereira JC, Silva BAD. Intensity of swimming exercise influences aortic reactivity in rats. ACTA ACUST UNITED AC 2015; 48:996-1003. [PMID: 26397974 PMCID: PMC4671526 DOI: 10.1590/1414-431x20154397] [Citation(s) in RCA: 13] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2014] [Accepted: 01/16/2015] [Indexed: 11/26/2022]
Abstract
Exercise is known to cause a vasodilatory response; however, the correlation between
the vasorelaxant response and different training intensities has not been
investigated. Therefore, this study evaluated the vascular reactivity and lipid
peroxidation after different intensities of swimming exercise in rats. Male Wistar
rats (aged 8 weeks; 250-300 g) underwent forced swimming for 1 h whilst tied to loads
of 3, 4, 5, 6, and 8% of their body weight, respectively (groups G3, G4, G5, G6 and
G8, respectively; n=5 each). Immediately after the test, the aorta was removed and
suspended in an organ bath. Cumulative relaxation in response to acetylcholine
(10−12-10−4 M) and contraction in response to phenylephrine
(10−12-10−5 M) were measured. Oxidative stress was estimated
by determining malondialdehyde concentration. The percentages of aorta relaxation
were significantly higher in G3 (7.9±0.20), G4 (7.8±0.29), and G5 (7.9±0.21),
compared to the control group (7.2±0.04), while relaxation in the G6 (7.4±0.25) and
G8 (7.0±0.06) groups was similar to the control group. In contrast, the percentage of
contraction was significantly higher in G6 (8.8 ±0.1) and G8 (9.7±0.29) compared to
the control (7.1±0.1), G3 (7.3±0.2), G4 (7.2±0.1) and G5 (7.2±0.2%) groups. Lipid
peroxidation levels in the aorta were similar to control levels in G3, G4 and G5, but
higher in G6 and G8, and significantly higher in G8 (one-way ANOVA). These results
indicate a reduction in vasorelaxing activity and an increase in contractile activity
in rat aortas after high-intensity exercise, followed by an increase in lipid
peroxidation.
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Affiliation(s)
- A F Brito
- Programa de Pós-Graduação em Produtos Naturais e Sintéticos Bioativos, Centro de Ciências da Saúde, Universidade Federal da Paraíba, Paraíba, Brasil
| | - A S Silva
- Laboratório de Estudos do Treinamento Físico Aplicado ao Desempenho e Saúde, Departamento de Educação Física, Centro de Ciências da Saúde, Universidade Federal da Paraíba, Paraíba, Brasil
| | - I L L Souza
- Programa de Pós-Graduação em Produtos Naturais e Sintéticos Bioativos, Centro de Ciências da Saúde, Universidade Federal da Paraíba, Paraíba, Brasil
| | - J C Pereira
- Programa de Pós-Graduação em Produtos Naturais e Sintéticos Bioativos, Centro de Ciências da Saúde, Universidade Federal da Paraíba, Paraíba, Brasil
| | - B A da Silva
- Programa de Pós-Graduação em Produtos Naturais e Sintéticos Bioativos, Centro de Ciências da Saúde, Universidade Federal da Paraíba, Paraíba, Brasil
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16
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Franco LJ, Dal Fabbro AL, Martinez EZ, Sartorelli DS, Silva AS, Soares LP, Franco LF, Kuhn PC, Vieira-Filho JPB, Moisés RS. Performance of glycated haemoglobin (HbA1c) as a screening test for diabetes and impaired glucose tolerance (IGT) in a high risk population--the Brazilian Xavante Indians. Diabetes Res Clin Pract 2014; 106:337-42. [PMID: 25271115 DOI: 10.1016/j.diabres.2014.08.027] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/10/2014] [Revised: 08/06/2014] [Accepted: 08/30/2014] [Indexed: 10/24/2022]
Abstract
AIMS To examine the properties of HbA1c to detect diabetes and IGT in adult Brazilian Xavante Indians, a high risk population for diabetes. METHODS The survey was carried out between October 2010 and January 2012 and based on a 75 g oral glucose tolerance test (OGTT). Basal and 2h capillary glycaemia were measured by HemoCue Glucose 201+; HbA1c using an automated high-performance liquid chromatography analyzer (Tosoh G7). RESULTS 630 individuals aged ≥ 20 years were examined and 80 had a previous diagnosis of diabetes. Sensitivity, specificity and accuracy for HbA1c ≥ 6.5% (≥ 48 mmol/mol) were 71.3%, 90.5% and 87.2%. The areas under the ROC curve (AUC) was 0.88 (95%CI: 0.83-0.93). To identify IGT, HbA1c values between 5.7% and 6.4% (39-47 mmol/mol) presented sensitivity, specificity and accuracy of 87.2%, 24.7% and 51.4%, with an AUC of 0.62 (95%CI: 0.57-0.67). CONCLUSIONS The ADA/WHO proposed cut-off of 6.5% (48 mmol/mol) for HbA1c was adequate to detect diabetes among the Xavante. However, the performance of the ADA proposed cut-off points for pre-diabetes, when used to detect IGT was inadequate and should not be recommended.
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Affiliation(s)
- L J Franco
- Department of Social Medicine, Ribeirão Preto Medical School, University of São Paulo, Avenida Bandeirantes, 3900, CEP: 14049-900 Ribeirão Preto, SP, Brazil.
| | - A L Dal Fabbro
- Department of Social Medicine, Ribeirão Preto Medical School, University of São Paulo, Avenida Bandeirantes, 3900, CEP: 14049-900 Ribeirão Preto, SP, Brazil
| | - E Z Martinez
- Department of Social Medicine, Ribeirão Preto Medical School, University of São Paulo, Avenida Bandeirantes, 3900, CEP: 14049-900 Ribeirão Preto, SP, Brazil
| | - D S Sartorelli
- Department of Social Medicine, Ribeirão Preto Medical School, University of São Paulo, Avenida Bandeirantes, 3900, CEP: 14049-900 Ribeirão Preto, SP, Brazil
| | - A S Silva
- Department of Social Medicine, Ribeirão Preto Medical School, University of São Paulo, Avenida Bandeirantes, 3900, CEP: 14049-900 Ribeirão Preto, SP, Brazil
| | - L P Soares
- Department of Social Medicine, Ribeirão Preto Medical School, University of São Paulo, Avenida Bandeirantes, 3900, CEP: 14049-900 Ribeirão Preto, SP, Brazil
| | - L F Franco
- Division of Endocrinology, Escola Paulista de Medicina, Federal University of São Paulo. Rua Pedro de Toledo, 781-12 floor, CEP: 04039-001 São Paulo, SP, Brazil
| | - P C Kuhn
- Division of Endocrinology, Escola Paulista de Medicina, Federal University of São Paulo. Rua Pedro de Toledo, 781-12 floor, CEP: 04039-001 São Paulo, SP, Brazil
| | - J P B Vieira-Filho
- Division of Endocrinology, Escola Paulista de Medicina, Federal University of São Paulo. Rua Pedro de Toledo, 781-12 floor, CEP: 04039-001 São Paulo, SP, Brazil
| | - R S Moisés
- Division of Endocrinology, Escola Paulista de Medicina, Federal University of São Paulo. Rua Pedro de Toledo, 781-12 floor, CEP: 04039-001 São Paulo, SP, Brazil
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17
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Carvalho MG, Tsuneto LT, Moita Neto JM, Sousa LCDM, Sales Filho HLA, Macêdo MB, Barroso JRPM, Pereira EM, Araújo AS, Silva AS, Monte SJH. HLA-A, HLA-B and HLA-DRB1 haplotype frequencies in Piauí's volunteer bone marrow donors enrolled at the Brazilian registry. Hum Immunol 2013; 74:1598-602. [PMID: 23994585 DOI: 10.1016/j.humimm.2013.08.283] [Citation(s) in RCA: 11] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2013] [Revised: 08/19/2013] [Accepted: 08/20/2013] [Indexed: 11/17/2022]
Abstract
This study aimed to report the antigen and haplotype frequencies (HFs) of volunteer bone marrow donors (VBMDs) from the state of Piauí who were enrolled in the National Volunteer Bone Marrow Donor Registry (REDOME). The research subjects were 21,943 volunteer bone marrow donors, predominantly young adult women (53.3%). The most frequent allelic group was HLA-A2, followed by -DRB1*13, -DRB1*04, -DRB1*07, -B*15, -B∗35, -B*44, -A*24 and -A*03. Of the 2,704 haplotypes observed, the three most frequent haplotypes were A*29 B*44 DRB1*07 (1.45%), A*01 B*08 DRB1*03 (1.4%) and A*03 B*07 DRB1*15 (0.92%). These three haplotypes were in linkage disequilibrium. PCA showed that 98% of the VBMDs have HLA allele frequencies that are very similar to those from Teresina, the capital city of Piauí. According to the PCA results, these municipalities are distributed with a close proximity to Teresina, which in turn has a close genetic proximity to the Hispanic ethnicity, intermediate proximity to Caucasians and Africans and a distant kinship to Amerindians. The hierarchical proximity of the population of Piauí to the Portuguese and Hispanic populations to shows the strong influence of the latter on the former.
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Affiliation(s)
- M G Carvalho
- Master's Program in Science and Health, Federal University of Piauí, Brazil.
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18
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Silva AS, Jacques RJS, Andreazza R, Bento FM, Roesch LFW, Camargo FAO. Properties of catechol 1,2-dioxygenase in the cell free extract and immobilized extract of Mycobacterium fortuitum. Braz J Microbiol 2013; 44:291-7. [PMID: 24159319 PMCID: PMC3804213 DOI: 10.1590/s1517-83822013000100043] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2011] [Accepted: 07/02/2012] [Indexed: 11/22/2022] Open
Abstract
Polycyclic aromatic hydrocarbons (PAH) are carcinogenic compounds which contaminate water and soil, and the enzymes can be used for bioremediation of these environments. This study aimed to evaluate some environmental conditions that affect the production and activity of the catechol 1,2-dioxygenase (C12O) by Mycobacterium fortuitum in the cell free and immobilized extract in sodium alginate. The bacterium was grown in mineral medium and LB broth containing 250 mg L−1 of anthracene (PAH). The optimum conditions of pH (4.0–9.0), temperature (5–70 °C), reaction time (10–90 min) and the effect of ions in the enzyme activity were determined. The Mycobacterium cultivated in LB shown higher growth and the C12O activity was two-fold higher to that in the mineral medium. To both extracts the highest enzyme activity was at pH 8.0, however, the immobilized extract promoted the increase in the C12O activity in a pH range between 4.0 and 8.5. The immobilized extract increased the enzymatic activity time and showed the highest C12O activity at 45 °C, 20 °C higher than the greatest temperature in the cell free extract. The enzyme activity in both extracts was stimulated by Fe3+, Hg2+ and Mn2+ and inhibited by NH4+ and Cu2+, but the immobilization protected the enzyme against the deleterious effects of K+ and Mg2+ in tested concentrations. The catechol 1,2-dioxygenase of Mycobacterium fortuitum in the immobilized extract has greater stability to the variations of pH, temperature and reaction time, and show higher activity in presence of ions, comparing to the cell free extract.
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Affiliation(s)
- A S Silva
- Departamento de Solos, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
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19
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Tavares J, Silva I, Silva AS, Infante da Càmara M, Mendes J. Best impression materials in oral rehabilitation-study protolocol. Bull Group Int Rech Sci Stomatol Odontol 2012; 51:e09. [PMID: 25460785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Received: 11/14/2012] [Accepted: 11/14/2012] [Indexed: 06/04/2023]
Abstract
Short Communication selected from the Oral Presentations of the 56th Congress of the Groupèment International pour la Recherche Scientifique en Stomatologie et Odontologie, Peñafiel (Portugal) May 2012.
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Affiliation(s)
- Jc Tavares
- Instituto Superior de Ciências da Saúde -Norte (ISCS-N).
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Silva AS, Araújo SB, Souza DC, Silva FASE. Study of the Cu, Mn, Pb and Zn dynamics in soil, plants and bee pollen from the region of Teresina (PI), Brazil. AN ACAD BRAS CIENC 2012; 84:881-9. [PMID: 23037307 DOI: 10.1590/s0001-37652012005000065] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2011] [Accepted: 02/27/2012] [Indexed: 11/21/2022] Open
Abstract
The purpose of this study is to characterize native bee plants regarding their capacity to extract and accumulate trace elements from the soil and its consequences to the sanity of the produced pollen. The trace elements Cu, Mn, Pb and Zn were analyzed in soil, plants and bee pollen from Teresina region (PI), Brazil, by flame atomic absorption spectrophotometer. Considering the studied plant species, Cu and Pb metals presented in the highest levels in the roots of B. platypetala with 47.35 and 32.71 μg.mL(-1) and H. suaveolens with 39.69 and 17.06 μg.mL(-1), respectively, while in the aerial parts Mn and Zn metals presented the highest levels in S. verticillata with 199.18 and 85.73 μg.mL(-1). In the pollen, the levels of Cu, Mn, Pb and Zn vary from 5.44 to 11.75 μg.mL(-1); 34.31 to 85.75 μg.mL(-1); 13.98 to 18.19 μg.mL(-1) and 50.19 to 90.35 μg.mL(-1), respectively. These results indicate that in the apicultural pasture the translocation (from soil to pollen) of Mn and Zn was more effective than in case of Cu and Pb, therefore, the bee pollen can be used as food supplement without causing risks to human health.
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Affiliation(s)
- Aline S Silva
- Departamento de Química, Centro de Ciências da Natureza, Universidade Federal do Piauí, Teresina, PI, Brasil.
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Valadas S, Candeias A, Mirão J, Tavares D, Coroado J, Simon R, Silva AS, Gil M, Guilherme A, Carvalho ML. Study of mural paintings using in situ XRF, confocal synchrotron-μ-XRF, μ-XRD, optical microscopy, and SEM-EDS--the case of the frescoes from Misericordia Church of Odemira. Microsc Microanal 2011; 17:702-709. [PMID: 21888755 DOI: 10.1017/s1431927611000195] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
In this work, we present the results of an analytical method developed for detailed pigment identification, stratigraphy, and degradation of the paint layers of mural paintings applied in the study of the 17th century frescoes from the Misericordia Church of Odemira (Southwest Portugal). In situ X-ray fluorescence spectrometry analyses were performed on three panels of the mural paintings and complemented by colorimetric measurements. The different color areas were also sampled as microfragments (approx. 1 mm2) that were studied as taken or mounted in epoxy resin to expose the different paint layers. The microfragments of paint layers and their cross sections were characterized by optical microscopy and scanning electron microscopy coupled with energy dispersive X-ray spectrometry. Furthermore, elemental analysis was obtained with spatially resolved confocal synchrotron radiation μ-X-ray fluorescence spectrometry performed at ANKA synchrotron FLUO beamline. Occasionally, phase analysis by μ-X-ray diffraction was also performed. Results from the different techniques allowed pigment identification and, in some cases, the evaluation of color changes due to degradation processes and, considering the Southern Portugal geology, the identification of their possible provenance. The pigments used were essentially yellow, brown and red ochres, smalt blue, copper green, and black earths, probably from local sources.
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Affiliation(s)
- S Valadas
- HERCULES Laboratory and Évora Chemistry Centre, University of Évora and Jose de Figueiredo Conservation Restoration Laboratory, Institute of Museums and Conservation, Largo Marquês de Marialva, 8, 7000-809 Évora, Portugal
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Tavares J, Lobâo D, Martins MA, Silva AS, Infante-Camara M, Mendes J. [Laser therapy in sinus elevation]. Bull Group Int Rech Sci Stomatol Odontol 2011; 50:27-30. [PMID: 22750596] [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] [Subscribe] [Scholar Register] [Received: 09/20/2011] [Accepted: 09/23/2011] [Indexed: 06/01/2023]
Affiliation(s)
- J Tavares
- Étudiant du Master en Réhabilitation Orale de l’Institut Supérieur de Sciences de la Santé-Nord, Gandra - Portugal.
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Andrade HM, Toledo VPCP, Pinheiro MB, Guimarães TMPD, Oliveira NC, Castro JA, Silva RN, Amorim AC, Brandão RMSS, Yoko M, Silva AS, Dumont K, Ribeiro ML, Bartchewsky W, Monte SJH. Evaluation of miltefosine for the treatment of dogs naturally infected with L. infantum (=L. chagasi) in Brazil. Vet Parasitol 2011; 181:83-90. [PMID: 21641721 DOI: 10.1016/j.vetpar.2011.05.009] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2011] [Revised: 05/06/2011] [Accepted: 05/09/2011] [Indexed: 11/30/2022]
Abstract
Dogs naturally infected with Leishmania Infantum (=L. chagasi) were treated with miltefosine using different therapeutic regimens. The animals were evaluated for clinical evolution, biochemical parameters, parasite load (by real-time PCR), cytokine levels and humoral response. After treatment and during the following 24 months, there was progressive clinical improvement and complete recovery in 50% (7/14) of the treated animals. There was a decrease in the smear positivity of the bone marrow after treatment, and there was also a gradual and constant decrease in positive cultures at the end of the follow-up period. However, the PCR detection of parasite DNA remained positive. In general, all animals presented a significant increase in parasite load 6 months after treatment. The IFN-γ levels in all the groups tended to increase during follow-up period, regardless of the miltefosine dose administered. The IL-4 and IL-10 levels of the animals tended to decrease during follow-up, except after 300 days when only IL-10 increased. The serum antibodies identified antigens that ranged from 116 kDa to less than 29 kDa in the Western blot assay. Furthermore, 300 days after treatment, qualitative and quantitative differences in the antigen profiles were observed. Antigens of 97 and 46 kDa were the most intensely recognized. Higher levels of antigen-specific Leishmania IgG were detected before and 300 days after treatment in all groups. Taking together, the improvement in the clinical symptoms was not followed by parasitological clearance, suggesting that treatment with miltefosine is not recommended, especially in endemic areas like Brazil, where children are the major victims and dogs are involved in the maintenance of the parasite cycle.
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Affiliation(s)
- H M Andrade
- Universidade Federal de Minas Gerais, Instituto de Ciências Biológicas, Departamento de Parasitologia, Belo Horizonte, MG, Brazil.
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Silva AS, Tóth IV, Pezza L, Pezza HR, Lima JLFC. Determination of glyphosate in water samples by multi-pumping flow system coupled to a liquid waveguide capillary cell. ANAL SCI 2011; 27:1031-6. [PMID: 21985928 DOI: 10.2116/analsci.27.1031] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2011] [Accepted: 08/17/2011] [Indexed: 12/16/2023]
Abstract
A simple screening method was developed for the determination of glyphosate in water samples using a multi-pumping flow system. The proposed method is based on the reaction between glyphosate and p-dimethylaminocinnamaldehyde (p-DAC), in an acid medium where the reaction product can be measured spectrophotometrically at λ(max) = 495 nm. An experimental design methodology was used to optimize the measurement conditions. The proposed method was applied to the determination of glyphosate in water samples in a concentration range from 0.5 to 10 µg mL(-1). The limit of detection and quantification were 0.17 and 0.53 µg mL(-1), respectively. The results obtained (88.5 to 104.5%) in recovery studies for the determination of glyphosate in different water samples indicated good accuracy and no matrix effect for the developed method. Samples were also analyzed by a confirmatory HPLC method, and agreement within the two set of results was found.
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Affiliation(s)
- Aline S Silva
- Instituto de Química, Universidade Estadual Paulista (UNESP), Araraquara, SP, Brazil
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Morais PC, Silva AS, Leite ES, Garg VK, Oliveira AC, Viali WR, Sartoratto PPC. Tailoring magnetic nanoparticle for transformers application. J Nanosci Nanotechnol 2010; 10:1251-1254. [PMID: 20352784 DOI: 10.1166/jnn.2010.1835] [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] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
In this study photoacoustic spectroscopy was used to investigate the effect of dilution of an oil-based magnetic fluid sample on the magnetic nanoparticle surface-coating. Changes of the photoacoustic signal intensity on the band-L region (640 to 830 nm) upon dilution of the stock magnetic fluid sample were discussed in terms of molecular surface desorption. The model proposed here assumes that the driving force taking the molecules out from the nanoparticle surface into the bulk solvent is the gradient of osmotic pressure. This gradient of osmotic pressure is established between the nanoparticle surface and the bulk suspension. It is further assumed that the photoacoustic signal intensity (area under the photoacoustic spectra) scales linearly with the number of coating molecules (surface grafting) at the nanoparticle surface. This model picture provides a non-linear analytical description for the reduction of the surface grafting coefficient upon dilution, which was successfully-used to curve-fit the photoacoustic experimental data.
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Affiliation(s)
- P C Morais
- Universidade de Brasília, Instituto de Física, Núcleo de Física Aplicada, Brasília DF 70910-900, Brazil
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Placido A, Munhoz D, Morato T, Gurgel A, Macedo A, Quinaglia J, Silva AS. A 031 The Risk of Cardiovascular Death and Myocardial Infarction After an Acute Coronary Event Is Independently Associated with Hopelessness and Loss of Pleasure Depressive Symptoms. ATHEROSCLEROSIS SUPP 2009. [DOI: 10.1016/s1567-5688(09)71694-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Soares CC, Marques TM, Rigolin GG, Neis E, Friaça AMV, S. Silva A, Barreto GS, Lopes L. Atividade analgésica do extrato da Pectis jangadensis (S. Moore). Rev bras farmacogn 2009. [DOI: 10.1590/s0102-695x2009000100016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Pereira SRF, Silva AS, Bormann EP, Kuppinger O. Association between a new 3q;5q chromosomal translocation and dystrophy of human retinal pigment epithelium. Genet Mol Res 2007; 6:1085-1090. [PMID: 18273801] [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: 05/25/2023]
Abstract
Retinitis pigmentosa (RP) is a heterogeneous group of inherited retinal degeneration. This group of disorders essentially leads to blindness due to mutations in different genes. The genetic basis affected by sporadic and inherited autosomal dominant, autosomal recessive or X-linked mutations is complex. In humans, RP is in most cases associated with missense mutations in the rhodopsin gene (RHO). RHO plays an important role in phototransduction pathways. So far, few studies have described associations between chromosomal alterations and RP. In this study, we present a case report of a premature, 32-week-old male baby who suffered from retinopathy, facial dysmorphisms and other disorders. His chromosomes were analyzed by conventional and high-resolution chromosomal techniques. This analysis revealed structural aberrations on chromosomes 3 and 5 with an apparently balanced chromosomal translocation with karyotype 46,XY,t(3;5)(q25;q11.2). Remarkably, the 3q breakpoint on the long arm of chromosome 3 is located close to the physical RHO chromosomal gene location. In this study, we describe presumably for the first time a possible association between a 3q;5q chromosomal alteration and RP. We conclude that the new detected chromosomal translocation may lead either to loss or inactivation of the intragenic RHO gene or its respective gene regulatory region. As a consequence, the chromosomal aberration may be responsible for retinitis pigmentosa.
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Affiliation(s)
- S R F Pereira
- Laboratório de Genética e Biologia Molecular, Departamento de Biologia, Universidade Federal do Maranhão, São Luís, MA, Brasil.
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Silva AS, Saldanha C, Martins e Silva J. Effects of velnacrine maleate in the leukocyte-endothelial cell interactions in rat cremaster microcirculatory network. Clin Hemorheol Microcirc 2007; 36:235-46. [PMID: 17361025] [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: 05/14/2023]
Abstract
The expression of acetylcholinesterase in proinflammatory cells has supported the hypothesis that this protein plays a role in intercellular adhesion. Previous results of our group show that velnacrine, an acetylcholinesterase inhibitor, increases the number of adherent leukocytes in post-capillary venules of Wistar rats' mesentery muscle. This works intends to evaluate the local application of velnacrine and acetylcholine in the inflammatory response at the microcirculatory network by studying the leukocytes/endothelium interactions in post-capillary venules of Wistar rats' cremaster muscle. The number and the speed of the rolling leukocytes, the number of adherent leukocytes and hemodynamic parameters were determined and also the plasma levels of IL-1beta. The results have shown that in the presence of velnacrine there is a significant increase of the rolling leukocytes (1.28+/-0.39 vs 1.93+/-0.20), as well as an increase of the adherent ones (0.86+/-0.72 vs 1.02+/-0.83). When acetylcholine is adding with velnacrine the number of rolling and adherent leukocytes decreases without changing the IL-1beta plasma circulation induced by velnacrine. Our results suggest an anti-inflammatory role induced by ACh without full efficiency because the rolling leukocytes velocity was reduced without changes in the plasma level of IL-1beta.
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Affiliation(s)
- A S Silva
- Instituto de Biopatologia Química, Unidade de Biopatologia, Instituto de Medicina Molecular, Faculdade de Medicina de Lisboa, Lisboa, Portugal.
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Silva AS, Yunes JA. Conservation of glycolytic oscillations in Saccharomyces cerevisiae and human pancreatic beta-cells: a study of metabolic robustness. Genet Mol Res 2006; 5:525-35. [PMID: 17117368] [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: 05/12/2023]
Abstract
The present study compares two computer models of the first part of glucose catabolism in different organisms in search of evolutionarily conserved characteristics of the glycolysis cycle and proposes the main parameters that define the stable steady-state or oscillatory behavior of the glycolytic system. It is suggested that in both human pancreatic beta-cells and Saccharomyces cerevisiae there are oscillations that, despite differences in wave form and period of oscillation, share the same robustness strategy: the oscillation is not controlled by only one but by at least two parameters that will have more or less control over the pathway flux depending on the initial state of the system as well as on extra-cellular conditions. This observation leads to two important interpretations: the first is that in both S. cerevisiae and human beta-cells, despite differences in enzyme kinetics and mechanism of feedback control, evolution seems to have kept an oscillatory behavior coupled to the glucose concentration outside the cytoplasm, and the second is that the development of drugs to regulate metabolic dysfunctions in more complex systems may require further study, not only determining which enzyme is controlling the flux of the system but also under which conditions and how its control is maintained by the enzyme or transferred to other enzymes in the pathway as the drug starts acting.
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Affiliation(s)
- A S Silva
- Laboratório de Biologia Molecular, Centro Infantil Boldrini, Campinas, SP, Brasil.
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Gonçalves S, Maria AV, Silva AS, Martins-Silva J, Saldanha C. Phytosterols in milk as a depressor of plasma cholesterol levels: experimental evidence with hypercholesterolemic Portuguese subjects. Clin Hemorheol Microcirc 2006; 35:251-5. [PMID: 16899937] [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: 05/11/2023]
Abstract
Plant sterols have been reported to decrease plasma concentrations of cholesterol without any side effects. To evaluate the effects on plasma cholesterol concentrations and the hemorheological parameters, we performed a study with hypercholesterolemic patients (n = 19) treated with phytosterol-enriched milk (2 g/day). Hypercholesterolemic patients (n = 15) of matched age drinking equal type of milk but without phytosterols were used as control group. Concentrations of total cholesterol, HDL-C, LDL-C and hemorheological parameters were measured in the beginning, after 15 and 30 days of milk intake. After 15 days of beverage intake, hypercholesterolemic subjects treated with phytosterol-enriched milk showed a significant decrease in plasma concentrations of total cholesterol and LDL-C by 9.62% (p < 0.05) and 12.20% (p < 0.05), respectively. After 30 days, a little increase in the total cholesterol and LDL-C concentrations were observed. In the hypercholesterolemic control group there were nonsignificant changes between plasma concentrations of total cholesterol, HDL-C and LDL-C during the study. The evaluation of plasma viscosity and erythrocyte aggregation shows no changes statistically significant during the study for both groups studied. The results obtained during the study show a positive effect with the phytosterol-enriched milk as plasma cholesterol-lowering as combined treatment for hypercholesterolemia.
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Affiliation(s)
- Sonia Gonçalves
- Instituto de Biopatologia Química, Unidade de Biopatologia Vascular, Instituto de Medicina Molecular, Faculdade de Medicina de Lisboa, 1649-028 Lisboa, Portugal.
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Silva AS, Saldanha C, Martins-Silva J. Effects of low-fat milk enriched with phytosterols on plasma cholesterol concentrations and hemorheological parameters of Wistar rats. Clin Hemorheol Microcirc 2006; 35:245-50. [PMID: 16899936] [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: 05/11/2023]
Abstract
Clinical and experimental studies have shown that the use of phytosterol esters as a food ingredient reduces the plasma concentrations of cholesterol and LDL cholesterol, not affecting the HDL cholesterol levels. Based on the use of phytosterols as a food ingredient, we have conducted a 30-day feeding study with Wistar rats, drinking low-fat milk containing phytosterols, in order to evaluate the plasma cholesterol concentrations and the hemorheological parameters. Throughout the study, clinical observations, body weights and food and milk consumption were measured and at the end of the feeding period, blood samples were collected for biochemical and hemorheological determinations. There were no clinical changes, alterations in growth, food or milk consumption. In the plasma cholesterol and HDL concentrations there were no significant differences, but LDL levels decreased about 70%. In the hemorheological parameters, significant changes were observed in plasma viscosity and in membrane fluidity in all experimental groups. The blood viscosity and the erythrocyte deformability show significant improvements with the ingestion of the phytosterols enriched milk. With these results we conclude that phytosterols maintain their cholesterol lowering properties when incorporated in milk and can be considered a hypolipemic food component.
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Affiliation(s)
- A S Silva
- Instituto de Biopatologia Química, Unidade de Biopatologia Vascular, Instituto de Medicina Molecular, Faculdade de Medicina de Lisboa, Av. Professor Egas Moniz, 1649-028 Lisboa, Portugal.
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Mello SB, Barros DM, Silva AS, Laurindo IM, Novaes GS. Methotrexate as a preferential cyclooxygenase 2 inhibitor in whole blood of patients with rheumatoid arthritis. Rheumatology (Oxford) 2000; 39:533-6. [PMID: 10852985 DOI: 10.1093/rheumatology/39.5.533] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVE To investigate the regulation of whole-blood cyclooxygenase-1 and -2 (COX-2 and COX-1) activities by methotrexate (MTX) in rheumatoid arthritis (RA) patients. METHODS Whole blood was withdrawn from nine healthy volunteers, 12 RA patients treated with MTX (RA/MTX) and six RA patients treated with chloroquine (RA/CQ). COX-1 activity was quantified as platelet thromboxane B(2) production in unstimulated blood and COX-2 activity was measured as prostaglandin E(2) (PGE(2)) production in whole blood stimulated with LPS. Thromboxane B(2) and PGE(2) were measured by radioimmunoassay. We studied the drug effect in vitro by direct incubation of MTX with blood obtained from normal donors. Ex vivo assays were performed with blood collected from RA/MTX and RA/CQ patients. The influence of serum factors on enzyme activities was analysed in blood collected from normal donors and incubated with RA/MTX, autologous or heterologous serum. RESULTS In vitro assays showed no direct action of MTX on the activity of either enzyme. Assays performed with blood from RA/MTX patients showed preferential inhibition of COX-2 activity (PGE(2) = 10.11 +/- 2.42 ng/ml) when compared with blood of normal donors (PGE(2) = 37.7 +/- 4.36 ng/ml; P = 0.001). Inhibition of COX-2 activity was also observed when blood of normal donors was co-incubated with RA/MTX serum. CONCLUSION Our results clearly show that the anti-inflammatory action of low-dose MTX is partly mediated by a serum factor induced by MTX or a MTX metabolite that preferentially inhibits the activity of COX-2.
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Affiliation(s)
- S B Mello
- Rheumatology Division, Department of Internal Medicine, School of Medicine, University of Sao Paulo, Brazil
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Affiliation(s)
- S S Sun
- Department of Chemistry, State University of New York at Binghamton, Binghamton, New York 13902-6016, USA
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Alves PB, Koller SH, Silva AS, Reppold CT, Santos CL, Bichinho GS, Prade LT, Silva MR, Tudge J. A construção de uma metodologia observacional para o estudo de crianças em situação de rua: criando um manual de codificação de atividades cotidianas. Estud psicol (Natal) 1999. [DOI: 10.1590/s1413-294x1999000200006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Este estudo teve por objetivo descrever uma metodologia criada para a observação de crianças em situação de rua em seu ambiente natural. Questões sobre o desenvolvimento dessas crianças, sobre a utilização e significado do espaço da rua e sobre os aspectos metodológicos foram relevantes para a realização deste tipo de estudo. Os resultados encontram-se condensados em um manual criado especialmente para a codificação das atividades cotidianas apresentadas pelas crianças em situação de rua. A discussão enfatiza a importância da realização de estudos observacionais exploratórios e descritivos para avaliar o processo de criação de metodologias específicas para entender e analisar o desenvolvimento humano em situações de risco. A aplicabilidade deste método é discutida como conhecimento produzido pela Psicologia do Desenvolvimento.
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Abstract
BACKGROUND The goal of surgery for morbid obesity is to achieve a good and durable loss of weight and improve health. Previous studies have demonstrated a significant weight loss for the Swedish adjustable gastric band (SAGB). PATIENTS AND METHODS Between November 1996 and April 1998, 18 morbidly obese patients underwent SAGB laparoscopically. Their mean age at surgery was 35 years. The mean preoperative weight was 128 kg (range 89-163), and the mean body mass index was 50.4+/-9. Comorbidity was present in 13 patients. RESULTS One gastric perforation occurred, and in one patient it was not possible to create the pneumoperitoneum. Regarding late morbidity, one intragastric migration and one slippage of the band occurred. There was no mortality. CONCLUSION The low morbidity, the good results with weight loss, and the improvement in comorbidity lead the authors to believe that Swedish adjustable gastric banding for the treatment of morbidly obese patients is a successful means of losing weight and improving general health.
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Affiliation(s)
- A S Silva
- Department of Surgery, Hospital Geral Santo António, Porto, Portugal
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Silva AS, Bond R, Plouraboué F, Wirtz D. Fluctuation dynamics of a single magnetic chain. Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics 1996; 54:5502-5510. [PMID: 9965736 DOI: 10.1103/physreve.54.5502] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [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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