1
|
Bellan DL, Mazepa E, Biscaia SMP, Gonçalves JP, Oliveira CC, Rossi GR, Ferreira LG, Noseda MD, Trindade ES, Duarte MER, Franco CRC. Non-Cytotoxic Sulfated Heterorhamnan from Gayralia brasiliensis Green Seaweed Reduces Driver Features of Melanoma Metastatic Progression. Mar Biotechnol (NY) 2020; 22:194-206. [PMID: 31970542 DOI: 10.1007/s10126-020-09944-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [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: 10/02/2019] [Accepted: 01/02/2020] [Indexed: 06/10/2023]
Abstract
Melanoma is a form of skin cancer with high mortality owing to its fast progression and metastatic capacity. The treatments available nowadays are only palliative in advanced stages of the disease. Thus, alternative therapies for cancer treatment are in demand, and molecules from natural sources, such as polysaccharides, could represent new possible therapeutic approaches. Polysaccharides of freshwater and marine algae with biological activities, such as antitumor properties, are greatly reported in the scientific literature. In the present study, a sulfated heterorhamnan obtained from the green seaweed Gayralia brasiliensis (Gb1 fraction) was chemically characterized and its biological activities in the B16-F10 murine melanoma cell line were evaluated. The Gb1 polysaccharidic fraction tested concentrations presented low or absence of cytotoxicity to B16-F10 cells and neither cell proliferation nor cell cycle were altered. Interestingly, Gb1 treatment decreased B16-F10 cells migration and invasion capabilities and CD44 labeling, showing to be a promising compound for further in vitro and in vivo antitumor studies.
Collapse
Affiliation(s)
- D L Bellan
- Department of Cellular Biology, Federal University of Paraná, Curitiba, Paraná, Brazil.
| | - E Mazepa
- Department of Biochemistry, Federal University of Paraná, Curitiba, Paraná, Brazil
| | - S M P Biscaia
- Department of Cellular Biology, Federal University of Paraná, Curitiba, Paraná, Brazil
| | - J P Gonçalves
- Department of Cellular Biology, Federal University of Paraná, Curitiba, Paraná, Brazil
| | - C C Oliveira
- Department of Cellular Biology, Federal University of Paraná, Curitiba, Paraná, Brazil
| | - G R Rossi
- Department of Cellular Biology, Federal University of Paraná, Curitiba, Paraná, Brazil
| | - L G Ferreira
- Department of Biochemistry, Federal University of Paraná, Curitiba, Paraná, Brazil
| | - M D Noseda
- Department of Biochemistry, Federal University of Paraná, Curitiba, Paraná, Brazil
| | - E S Trindade
- Department of Cellular Biology, Federal University of Paraná, Curitiba, Paraná, Brazil
| | - M E R Duarte
- Department of Biochemistry, Federal University of Paraná, Curitiba, Paraná, Brazil.
| | - C R C Franco
- Department of Cellular Biology, Federal University of Paraná, Curitiba, Paraná, Brazil.
| |
Collapse
|
2
|
Albuquerque AAS, Ferreira LG, Carvalho MTM, Capellini VK, Evora PRB, Celotto AC. Effects of NO/cGMP inhibitors in a rat model of anaphylactoid shock. ACTA ACUST UNITED AC 2020; 53:e8853. [PMID: 32130289 PMCID: PMC7057939 DOI: 10.1590/1414-431x20198853] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Accepted: 12/04/2019] [Indexed: 11/27/2022]
Abstract
Anaphylactic shock can be defined as an acute syndrome, and it is the most severe clinical manifestation of allergic diseases. Anaphylactoid reactions are similar to anaphylactic events but differ in the pathophysiological mechanism. Nitric oxide (NO) inhibitors during anaphylaxis suggest that NO might decrease the signs and symptoms of anaphylaxis but exacerbate associated vasodilation. Therefore, blocking the effects of NO on vascular smooth muscle by inhibiting the guanylate cyclase (GC) would be a reasonable strategy. This study aimed to investigate the effects of NO/cGMP pathway inhibitors methylene blue (MB), Nω-nitro-L-arginine methyl ester hydrochloride (L-NAME), and indigo carmine (IC) in shock induced by compound 48/80 (C48/80) in rats. The effect was assessed by invasive blood pressure measurement. Shock was initiated by C48/80 intravenous bolus injection 5 min before (prophylactic) or after (treatment) the administration of the inhibitors MB (3 mg/kg), L-NAME (1 mg/kg), and IC (3 mg/kg). Of the groups that received drugs as prophylaxis for shock, only the IC group did not present the final systolic blood pressure (SBP) better than the C48/80 group. Regarding shock treatment with the drugs tested, all groups had the final SBP similar to the C48/80group. Altogether, our results suggested that inhibition of GC and NO synthase in NO production pathway was not sufficient to revert hypotension or significantly improve survival.
Collapse
Affiliation(s)
- A A S Albuquerque
- Departamento de Cirurgia e Anatomia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil
| | - L G Ferreira
- Departamento de Cirurgia e Anatomia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil
| | - M T M Carvalho
- Departamento de Cirurgia e Anatomia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil
| | - V K Capellini
- Departamento de Cirurgia e Anatomia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil.,Departamento de Biociências, Instituto de Saúde e Sociedade, Campus Baixada Santista, Universidade Federal de São Paulo, Santos, SP, Brasil
| | - P R B Evora
- Departamento de Cirurgia e Anatomia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil
| | - A C Celotto
- Departamento de Cirurgia e Anatomia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil.,Faculdade de Ciências da Saúde de Barretos Dr. Paulo Prata, Barretos, SP, Brasil
| |
Collapse
|
3
|
Bobadilla-Mendez MF, Cañas-Mendoza EA, Batista LM, Retes PL, Ferreira LG, Alcebiades SAP, Teixeira LV, Alvarenga RR, Fassani EJ, Zangeronimo MG. Influence of light sources on body characteristics of female Japanese quail (Coturnix coturnix japonica) in different reproductive ages. Anim Prod Sci 2019. [DOI: 10.1071/an16652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The aim of the study was to evaluate the influence of different light sources on organ characteristics, bone development, chemical body composition and hepatic function of female Japanese quail (Coturnix coturnix japonica) in different reproductive ages. In total, 210 female 1-day-old birds were housed in a brick shed, which was divided into six rooms during 12 weeks. Each room was equipped with a different type of light bulb (incandescent; compact fluorescent; and white, blue, red and green light-emitting diodes (LEDs)) and contained seven cages with five birds in each. The light intensity was 15 lx and the photoperiod was 23 h light and 1 h dark (23L:1D) during the first week, 10 L:14D from the second to the fifth week, and 17L:7D until the end of the experiment. The experimental design was completely randomised, with six treatments and seven replicates of each bird. The morphophysiological conditions of the birds were evaluated at the beginning (8 weeks) and during peak production (12 weeks). At 8 weeks, a higher intestine weight and length and liver weight were observed in birds maintained in white LED (P < 0.05). Lower breast weight (P < 0.01) was also observed with this type of lamp. White and red LEDs decreased (P < 0.05) the percentage of ash in the tibia, but this reduction did not affect (P > 0.05) bone resistance. At 12 weeks, higher bone resistance was obtained (P < 0.01) with white LED and higher eye diameter was observed (P < 0.05) with incandescent and white LED lamps. There was no influence (P > 0.05) of light sources on the circulating levels of aspartate aminotransferase and alanine aminotransferase. Fluorescent bulbs resulted in the highest (P < 0.05) level of γ-glutamyltransferase, while blue LED resulted in the lowest level. There was no influence (P > 0.05) of light sources on chemical body composition in any of the evaluated ages. It was concluded that the photostimulation of Japanese quail with white LED is more efficient to stimulate their organ development, especially the intestine, until 8 weeks of life, resulting in birds with better bone development during peak production.
Collapse
|
4
|
Ribeiro DS, Lins CF, Galvão V, Santos WGD, Rosa G, Machicado V, Pedreira AL, da Fonseca EP, Souza APMD, Baleeiro C, Ferreira LG, Oliveira ISD, Gama da Silva JPC, Atta AM, Santiago MB. Association of CXCL13 serum level and ultrasonographic findings of joints in patients with systemic lupus erythematosus and Jaccoud’s arthropathy. Lupus 2018; 27:939-946. [DOI: 10.1177/0961203317753557] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- D Sá Ribeiro
- Escola Bahiana de Medicina e Saúde Pública, Salvador, Bahia, Brazil
| | - C F Lins
- Escola Bahiana de Medicina e Saúde Pública, Salvador, Bahia, Brazil
| | - V Galvão
- Escola Bahiana de Medicina e Saúde Pública, Salvador, Bahia, Brazil
| | | | - G Rosa
- Escola Bahiana de Medicina e Saúde Pública, Salvador, Bahia, Brazil
| | - V Machicado
- Escola Bahiana de Medicina e Saúde Pública, Salvador, Bahia, Brazil
| | - A L Pedreira
- Escola Bahiana de Medicina e Saúde Pública, Salvador, Bahia, Brazil
| | - E P da Fonseca
- Escola Bahiana de Medicina e Saúde Pública, Salvador, Bahia, Brazil
| | | | - C Baleeiro
- Escola Bahiana de Medicina e Saúde Pública, Salvador, Bahia, Brazil
| | - L G Ferreira
- Escola Bahiana de Medicina e Saúde Pública, Salvador, Bahia, Brazil
| | - I Silva de Oliveira
- Departamento de Análises Clínicas e Toxicológicas, Faculdade de Farmácia, Universidade Federal da Bahia, Salvador, Bahia, Brazil
| | - J P Cotrim Gama da Silva
- Departamento de Análises Clínicas e Toxicológicas, Faculdade de Farmácia, Universidade Federal da Bahia, Salvador, Bahia, Brazil
| | - A M Atta
- Departamento de Análises Clínicas e Toxicológicas, Faculdade de Farmácia, Universidade Federal da Bahia, Salvador, Bahia, Brazil
| | - M B Santiago
- Escola Bahiana de Medicina e Saúde Pública, Salvador, Bahia, Brazil
- Serviços Especializados em Reumatologia da Bahia, Salvador, Bahia, Brazil
| |
Collapse
|
5
|
Schivinski CIS, de Assumpção MS, de Figueiredo FCXS, Wamosy RMG, Ferreira LG, Ribeiro JD. Impulse oscillometry, spirometry, and passive smoking in healthy children and adolescents. Rev Port Pneumol (2006) 2017; 23:311-316. [PMID: 28760702 DOI: 10.1016/j.rppnen.2017.06.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [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: 12/04/2016] [Revised: 05/17/2017] [Accepted: 06/25/2017] [Indexed: 11/26/2022] Open
Abstract
OBJECTIVE To identify changes in the forced and quiet breathing parameters of lung function in healthy children and adolescents exposed to passive smoking (PS). METHOD Comparative cross-sectional study. Healthy schoolchildren aged 6 to 14 years. We collected anthropometric data, lung function parameters using spirometry (forced breathing), and quiet breathing parameters using impulse oscillometry. The sample was divided into two groups according to exposure to PS: passive smoking group (PSG) and non-passive smoking group (NPSG). For the statistical analysis, the Shapiro-Wilk test was used to verify data normality and the T-test or Mann-Whitney test to compare spirometric and oscillometric parameters between groups (p≤0.05). MAIN FINDINGS The study included 78 children and adolescents, with 14 boys and 25 girls in each group. There were differences in the mean values for peak expiratory flow (p=0.01). There were no significant differences between the groups in values for z-score and lower limit of normal. The PSG had higher mean absolute values for reactance area (X5=0.05) and significant percentage of predicted values for the following impulse oscillometry parameters: central airway resistance (R20%, p=0.03) and for the indicators of presence of airway obstruction (Fres%, p=0.01; X5%=0.01% and AX%, p=0.01). CONCLUSION Children and adolescents exposed to PS had lower values for the spirometric variables and higher values for the oscillometric variables, indicating changes in forced and quiet parameters of lung function compared to the NPSG.
Collapse
Affiliation(s)
- C I S Schivinski
- Health and Sports Science Center (CEFID), Physiotherapy Department, Santa Catarina State University (UDESC), Florianópolis, SC, Brazil.
| | - M S de Assumpção
- Health and Sports Science Center (CEFID), Physiotherapy Department, Santa Catarina State University (UDESC), Florianópolis, SC, Brazil; Department of Pediatrics, Faculty of Medical Sciences, University of Campinas (UNICAMP), Campinas, SP, Brazil
| | - F C X S de Figueiredo
- Health and Sports Science Center (CEFID), Physiotherapy Department, Santa Catarina State University (UDESC), Florianópolis, SC, Brazil
| | - R M G Wamosy
- Health and Sports Science Center (CEFID), Physiotherapy Department, Santa Catarina State University (UDESC), Florianópolis, SC, Brazil
| | - L G Ferreira
- Health and Sports Science Center (CEFID), Physiotherapy Department, Santa Catarina State University (UDESC), Florianópolis, SC, Brazil
| | - J D Ribeiro
- Department of Pediatrics, Faculty of Medical Sciences, University of Campinas (UNICAMP), Campinas, SP, Brazil
| |
Collapse
|
6
|
Neves DG, Retes PL, Rocha RR, Ferreira LG, Naves LP, Alvarenga RR, Fassani EJ, Pereira LJ, Sousa RV, Zangeronimo MG. Effects ofin ovofeeding with glycerol for broilers. J Anim Physiol Anim Nutr (Berl) 2016; 101:434-440. [DOI: 10.1111/jpn.12578] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Accepted: 06/30/2016] [Indexed: 01/19/2023]
Affiliation(s)
- D. G. Neves
- Animal Science Department; Federal University of Lavras; Lavras Minas Gerais Brazil
| | - P. L. Retes
- Veterinary Medicine Department; Federal University of Lavras; Lavras Minas Gerais Brazil
| | - R. R. Rocha
- Animal Science Department; Federal University of Lavras; Lavras Minas Gerais Brazil
| | - L. G. Ferreira
- Veterinary Medicine Department; Federal University of Lavras; Lavras Minas Gerais Brazil
| | - L. P. Naves
- Faculty of Agronomy; University of José do Rosário Vellano/Fundação de Ensino e Tecnologia de Alfenas (UNIFENAS/FETA); Alfenas-MG Brazil
| | - R. R. Alvarenga
- Animal Science Department; Federal University of Lavras; Lavras Minas Gerais Brazil
| | - E. J. Fassani
- Animal Science Department; Federal University of Lavras; Lavras Minas Gerais Brazil
| | - L. J. Pereira
- Veterinary Medicine Department; Federal University of Lavras; Lavras Minas Gerais Brazil
| | - R. V. Sousa
- Veterinary Medicine Department; Federal University of Lavras; Lavras Minas Gerais Brazil
| | - M. G. Zangeronimo
- Veterinary Medicine Department; Federal University of Lavras; Lavras Minas Gerais Brazil
| |
Collapse
|
7
|
Celotto AC, Ferreira LG, Capellini VK, Albuquerque AAS, Rodrigues AJ, Evora PRB. Acute but not chronic metabolic acidosis potentiates the acetylcholine-induced reduction in blood pressure: an endothelium-dependent effect. ACTA ACUST UNITED AC 2015; 49:e5007. [PMID: 26648089 PMCID: PMC4712485 DOI: 10.1590/1414-431x20155007] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [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: 05/01/2015] [Accepted: 09/08/2015] [Indexed: 11/22/2022]
Abstract
Metabolic acidosis has profound effects on vascular tone. This study investigated the in vivo effects of acute metabolic acidosis (AMA) and chronic metabolic acidosis (CMA) on hemodynamic parameters and endothelial function. CMA was induced by ad libitum intake of 1% NH4Cl for 7 days, and AMA was induced by a 3-h infusion of 6 M NH4Cl (1 mL/kg, diluted 1:10). Phenylephrine (Phe) and acetylcholine (Ach) dose-response curves were performed by venous infusion with simultaneous venous and arterial blood pressure monitoring. Plasma nitrite/nitrate (NOx) was measured by chemiluminescence. The CMA group had a blood pH of 7.15±0.03, which was associated with reduced bicarbonate (13.8±0.98 mmol/L) and no change in the partial pressure of arterial carbon dioxide (PaCO2). The AMA group had a pH of 7.20±0.01, which was associated with decreases in bicarbonate (10.8±0.54 mmol/L) and PaCO2 (47.8±2.54 to 23.2±0.74 mmHg) and accompanied by hyperventilation. Phe or ACh infusion did not affect arterial or venous blood pressure in the CMA group. However, the ACh infusion decreased the arterial blood pressure (ΔBP: -28.0±2.35 mm Hg [AMA] to -4.5±2.89 mmHg [control]) in the AMA group. Plasma NOx was normal after CMA but increased after AMA (25.3±0.88 to 31.3±0.54 μM). These results indicate that AMA, but not CMA, potentiated the Ach-induced decrease in blood pressure and led to an increase in plasma NOx, reinforcing the effect of pH imbalance on vascular tone and blood pressure control.
Collapse
Affiliation(s)
- A C Celotto
- Departamento de Cirurgia e Anatomia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil
| | - L G Ferreira
- Departamento de Cirurgia e Anatomia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil
| | - V K Capellini
- Departamento de Cirurgia e Anatomia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil
| | - A A S Albuquerque
- Departamento de Cirurgia e Anatomia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil
| | - A J Rodrigues
- Departamento de Cirurgia e Anatomia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil
| | - P R B Evora
- Departamento de Cirurgia e Anatomia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil
| |
Collapse
|
8
|
Feder D, Rugollini M, Santomauro A, Oliveira LP, Lioi VP, Santos RD, Ferreira LG, Nunes MT, Carvalho MH, Delgado PO, Carvalho AAS, Fonseca FLA. Erythropoietin reduces the expression of myostatin in mdx dystrophic mice. ACTA ACUST UNITED AC 2014. [PMID: 25296358 PMCID: PMC4230286 DOI: 10.1590/1414-431x20143858] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [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] [Indexed: 11/22/2022]
Abstract
Erythropoietin (EPO) has been well characterized as a renal glycoprotein hormone
regulating red blood cell production by inhibiting apoptosis of erythrocyte
progenitors in hematopoietic tissues. EPO exerts regulatory effects in cardiac and
skeletal muscles. Duchenne muscular dystrophy is a lethal degenerative disorder of
skeletal and cardiac muscle. In this study, we tested the possible therapeutic
beneficial effect of recombinant EPO (rhEPO) in dystrophic muscles in mdx mice. Total
strength was measured using a force transducer coupled to a computer. Gene expression
for myostatin, transforming growth factor-β1 (TGF-β1), and tumor necrosis factor-α
(TNF-α) was determined by quantitative real time polymerase chain reaction. Myostatin
expression was significantly decreased in quadriceps from mdx mice treated with rhEPO
(rhEPO=0.60±0.11, control=1.07±0.11). On the other hand, rhEPO had no significant
effect on the expression of TGF-β1 (rhEPO=0.95±0.14, control=1.05±0.16) and TNF-α
(rhEPO=0.73±0.20, control=1.01±0.09). These results may help to clarify some of the
direct actions of EPO on skeletal muscle.
Collapse
Affiliation(s)
- D Feder
- Faculdade de Medicina do ABC, Santo André, SP, Brasil
| | - M Rugollini
- Faculdade de Medicina do ABC, Santo André, SP, Brasil
| | - A Santomauro
- Faculdade de Medicina do ABC, Santo André, SP, Brasil
| | - L P Oliveira
- Faculdade de Medicina do ABC, Santo André, SP, Brasil
| | - V P Lioi
- Faculdade de Medicina do ABC, Santo André, SP, Brasil
| | - R dos Santos
- Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, SP, Brasil
| | - L G Ferreira
- Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, SP, Brasil
| | - M T Nunes
- Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, SP, Brasil
| | - M H Carvalho
- Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, SP, Brasil
| | - P O Delgado
- Faculdade de Medicina do ABC, Santo André, SP, Brasil
| | | | - F L A Fonseca
- Faculdade de Medicina do ABC, Santo André, SP, Brasil
| |
Collapse
|
9
|
Gali WL, Sarabanda AV, Baggio JM, Ferreira LG, Gomes GG, Marin-Neto JA, Junqueira LF. Implantable cardioverter-defibrillators for treatment of sustained ventricular arrhythmias in patients with Chagas' heart disease: comparison with a control group treated with amiodarone alone. Europace 2014; 16:674-80. [DOI: 10.1093/europace/eut422] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
|
10
|
Hooda S, Ferreira LG, Latour MA, Bauer LL, Fahey GC, Swanson KS. In vitro digestibility of expanded pork skin and rawhide chews, and digestion and metabolic characteristics of expanded pork skin chews in healthy adult dogs1. J Anim Sci 2012; 90:4355-61. [DOI: 10.2527/jas.2012-5333] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
11
|
Costa RFD, Bettega MHF, Ferreira LG, Lima MAP. Electron scattering from molecules: applications of the Schwinger multichannel method to e−–CO and e−–C2H4collisions. ACTA ACUST UNITED AC 2007. [DOI: 10.1088/1742-6596/88/1/012028] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
12
|
Makochekanwa C, Kato H, Hoshino M, Tanaka H, Kubo H, Bettega MHF, Lopes AR, Lima MAP, Ferreira LG. Experimental and theoretical elastic cross sections for electron collisions with the C3H6 isomers. J Chem Phys 2006; 124:024323. [PMID: 16422599 DOI: 10.1063/1.2141950] [Citation(s) in RCA: 16] [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] [Indexed: 11/14/2022] Open
Abstract
In the present work we report cross sections for electron collisions with the isomers propene (C3H6) and cyclopropane (c-C3H6). Electron-scattering differential cross sections (DCS) are reported for measurements carried out for energies 1.5-100 eV and the angular range of 20 degrees-120 degrees. Elastic integral cross sections (ECS), DCS, and momentum-transfer cross sections (MTCS) are reported for calculations carried out using the Schwinger multichannel method with pseudopotentials for the energy range of 2.0-40 eV and angular range of 0 degrees-180 degrees. The resemblance of the pi* shape resonance in the cross sections, observed at 1.5-2.0 eV for propene, to those in C2H4 and C2F4 clearly points to the effect of the double bond in the molecular structures for these molecules. Below 60 eV, we observed clear differences in peak positions and magnitudes between the DCS, ECS, and MTCS for C3H6 and c-C3H6, which we view as the isomer effect.
Collapse
Affiliation(s)
- C Makochekanwa
- Physics Department, Sophia University, Chiyoda-ku, Tokyo 102-8554, Japan.
| | | | | | | | | | | | | | | | | |
Collapse
|
13
|
|
14
|
Neto JRP, Ferreira LG. An APW calculation of the energy band in diamond using different approximations for the exchange energy. ACTA ACUST UNITED AC 2001. [DOI: 10.1088/0022-3719/6/23/016] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
15
|
|
16
|
|
17
|
Natalense AP, Sartori CS, Ferreira LG, Lima MA. Electronic excitation of H2 by electron impact using soft norm-conserving pseudopotentials. Phys Rev A 1996; 54:5435-5437. [PMID: 9914119 DOI: 10.1103/physreva.54.5435] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
|
18
|
Bettega MHF, Lima MAP, Ferreira LG. Cross sections for collisions of low‐energy electrons with the hydrides PH3, AsH3, SbH3, SnH4, TeH2, and HI. J Chem Phys 1996. [DOI: 10.1063/1.471947] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
19
|
Bettega MHF, Natalense APP, Lima MAP, Ferreira LG. Calculation of elastic scattering cross sections of low‐energy electrons by PbH4 and SnH4. J Chem Phys 1995. [DOI: 10.1063/1.469840] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
20
|
Natalense AP, Bettega MH, Ferreira LG, Lima MA. Low-energy electron scattering by CF4, CCl4, SiCl4, SiBr4, and SiI4. Phys Rev A 1995; 52:R1-R4. [PMID: 9912322 DOI: 10.1103/physreva.52.r1] [Citation(s) in RCA: 9] [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]
|
21
|
Yoshinari NH, Oyafuso LK, Monteiro FG, de Barros PJ, da Cruz FC, Ferreira LG, Bonasser F, Baggio D, Cossermelli W. [Lyme disease. Report of a case observed in Brazil]. Rev Hosp Clin Fac Med Sao Paulo 1993; 48:170-4. [PMID: 8284588] [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] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Lyme disease is an infectious disease caused by spirochete Borrelia burgdorferi transmitted by Ixodid tick bite. The geographic distribution of the disease is universal, but the disease has not been identified definitely in South America yet. We report a probable case of Lyme disease in a woman, living in Jagůaré slum (São Paulo), who showed characteristics skin lesions of erythema chronicum migrans, with fever, weakness, headache, muscular pain, cough, arthralgia and sensitive radicular neuropathy in the left arm. The sequential serology made by ELISA method, using Borrelia burgdorferi whole sonicated antigen from Dr. Allen C. Steere laboratory, showed high titers of IgM antibody (1:1600). Because of the persistence of high IgM response for two months, we decided to treat the patient with tetracycline 2g/day during 10 days and the sorology became negative two months. The western blotting confirmed ELISA results showing presence of five bands (IgM). This report fulfills CDC criteria for Lyme disease diagnosis.
Collapse
Affiliation(s)
- N H Yoshinari
- Disciplina de Reumatologia, Faculdade de Medicina, Universidade de São Paulo
| | | | | | | | | | | | | | | | | |
Collapse
|
22
|
Machado WV, Kintop JA, Ferreira LG. Periodic-cluster calculations of the valence states and native defects in diamond, silicon, germanium, ZnS, ZnSe, and SiC. Phys Rev B Condens Matter 1993; 47:13219-13232. [PMID: 10005627 DOI: 10.1103/physrevb.47.13219] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
|
23
|
Bettega MH, Ferreira LG, Lima MA. Transferability of local-density norm-conserving pseudopotentials to electron-molecule-collision calculations. Phys Rev A 1993; 47:1111-1118. [PMID: 9909034 DOI: 10.1103/physreva.47.1111] [Citation(s) in RCA: 65] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
|
24
|
Laks DB, Ferreira LG, Froyen S, Zunger A. Efficient cluster expansion for substitutional systems. Phys Rev B Condens Matter 1992; 46:12587-12605. [PMID: 10003179 DOI: 10.1103/physrevb.46.12587] [Citation(s) in RCA: 62] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
|
25
|
Wei SH, Ferreira LG, Zunger A. First-principles calculation of the order-disorder transition in chalcopyrite semiconductors. Phys Rev B Condens Matter 1992; 45:2533-2536. [PMID: 10001790 DOI: 10.1103/physrevb.45.2533] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
|
26
|
Lu ZW, Wei S, Zunger A, Frota-Pessoa S, Ferreira LG. First-principles statistical mechanics of structural stability of intermetallic compounds. Phys Rev B Condens Matter 1991; 44:512-544. [PMID: 9999151 DOI: 10.1103/physrevb.44.512] [Citation(s) in RCA: 126] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
|
27
|
Kintop JA, Machado WV, Ferreira LG. Hole localization versus delocalization in symmetric molecular ions. Phys Rev A 1991; 43:3348-3354. [PMID: 9905417 DOI: 10.1103/physreva.43.3348] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
|
28
|
Wei S, Ferreira LG, Bernard JE, Zunger A. Electronic properties of random alloys: Special quasirandom structures. Phys Rev B Condens Matter 1990; 42:9622-9649. [PMID: 9995203 DOI: 10.1103/physrevb.42.9622] [Citation(s) in RCA: 131] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
29
|
|
30
|
Machado WV, Kinoshita DL, Ferreira LG, DeSiqueira ML. Cluster calculations of ZnO with Cu and Ni impurities. Phys Rev B Condens Matter 1990; 41:10735-10740. [PMID: 9993482 DOI: 10.1103/physrevb.41.10735] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
|
31
|
Wei S, Ferreira LG, Zunger A. First-principles calculation of temperature-composition phase diagrams of semiconductor alloys. Phys Rev B Condens Matter 1990; 41:8240-8269. [PMID: 9993147 DOI: 10.1103/physrevb.41.8240] [Citation(s) in RCA: 106] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
|
32
|
Ferreira LG, Wei SH, Zunger A. First-principles calculation of alloy phase diagrams: The renormalized-interaction approach. Phys Rev B Condens Matter 1989; 40:3197-3231. [PMID: 9992258 DOI: 10.1103/physrevb.40.3197] [Citation(s) in RCA: 121] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
|
33
|
Neto AA, Ferreira LG. Search for almost universal density functionals based on one- and two-electron systems. Phys Rev A Gen Phys 1989; 39:4978-4982. [PMID: 9901058 DOI: 10.1103/physreva.39.4978] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
|
34
|
Bernard JE, Ferreira LG, Wei S, Zunger A. Ordering of isovalent intersemiconductor alloys. Phys Rev B Condens Matter 1988; 38:6338-6341. [PMID: 9947109 DOI: 10.1103/physrevb.38.6338] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
|
35
|
Ferreira LG, Mbaye AA, Zunger A. Chemical and elastic effects on isostructural phase diagrams: The epsilon -G approach. Phys Rev B Condens Matter 1988; 37:10547-10570. [PMID: 9944508 DOI: 10.1103/physrevb.37.10547] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
|
36
|
Wei S, Mbaye AA, Ferreira LG, Zunger A. First-principles calculations of the phase diagrams of noble metals: Cu-Au, Cu-Ag, and Ag-Au. Phys Rev B Condens Matter 1987; 36:4163-4185. [PMID: 9943394 DOI: 10.1103/physrevb.36.4163] [Citation(s) in RCA: 59] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
|
37
|
Ferreira LG, Mbaye AA, Zunger A. Effect of chemical and elastic interactions on the phase diagrams of isostructural solids. Phys Rev B Condens Matter 1987; 35:6475-6478. [PMID: 9940891 DOI: 10.1103/physrevb.35.6475] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
|
38
|
|
39
|
Ferreira LG. New technique in the calculation of defects in solids by molecular methods: Pure and Cu-doped ZnS. Phys Rev B Condens Matter 1986; 34:5315-5319. [PMID: 9940363 DOI: 10.1103/physrevb.34.5315] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
|
40
|
Brescansin LM, Leite JR, Ferreira LG. A study of the ground states and ionization energies of H2, C2, N2, F2, and CO molecules by the variational cellular method. J Chem Phys 1979. [DOI: 10.1063/1.438305] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|