Search | SciELO

Abstract The Santos Basin (SB) is the main petroliferous basin in the Brazilian continental margin and one of the most studied marine areas in Brazil. However, historical data suggest that new efforts should be carried out to acquire quantitative biological data, especially in the deep sea, to establish the baseline of essential ocean variables in different ecosystems for future monitoring programs. The Brazilian energy company Petrobras planned and executed 24 oceanographic cruises over a period of 2 years to assess the benthic (SANSED cruise) and pelagic (SANAGU cruise) systems of the SB (356 days at sea in 2019 and 2021/2022). These efforts were part of the Santos Project, which comprised a comprehensive environmental study aimed at investigating benthic and pelagic variables to characterize ecology, biogeochemistry, thermohaline properties of water masses, and ocean circulation patterns, geomorphology, and sedimentology, as well as organic and inorganic chemistry. Here we present the detailed sampling designs and the field methods employed on board, during the SB scientific cruises. All sampling protocols were based on standardized approaches. For the benthos analyses, triplicate sediment samples were performed using a GOMEX-type box corer (0.25 m²) or a large modified Van Veen grab (0.75 m²) at 100 stations ranging from 25 to 2400 m depth. At each station, 25 geochemical and physico-chemical parameters were analyzed in addition to micro-, meio-, and macrofauna and living foraminifera samples. For the pelagic system, 60 stations were selected to investigate the plankton community, ranging in size from pico- to macroplankton, through vertical, horizontal, and oblique net hauls (20, 200, and 500 μm mesh size), as well as 25 biogeochemical parameters collected with an aid of a CTD-rosette sampler. Part of this scientific information also serves the Regional Environmental Characterization Project (PCR-BS) in support of Petrobras’ Santos Basin drilling licensing process led by the Brazilian Environmental Agency – IBAMA. This project contributes to the sustainable development of the SB, in line with the guidelines of the United Nations Decade of Ocean Science for Sustainable Development.

https://doi.org/10.1590/2675-2824071.22072dlm

Restricted feeding modulates peripheral clocks and nutrient sensing pathways in rats
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Rodrigues, Luis Guilherme F.

; de Araujo, Leonardo D.

; Roa, Silvia L. R.

; Bueno, Ana C.

; Uchoa, Ernane T.

; Antunes-Rodrigues, José

; Moreira, Ayrton C.

; Elias, Lucila L. K.

; de Castro, Margaret

; Martins, Clarissa S.

Archives of Endocrinology and Metabolism

Journal Metrics
- Sobre o periódico
- SciELO Analytics

2021, Volume 65 N. 5 Pages 549 - 561

Abstract: En | Text: En | PDF: En

ABSTRACT Objective: Feeding restriction in rats alters the oscillators in suprachiasmatic, paraventricular, and arcuate nuclei, hypothalamic areas involved in food intake. In the present study, using the same animals and experimental protocol, we aimed to analyze if food restriction could reset clock genes ( Clock, Bmal1 ) and genes involved in lipid metabolism ( Pgc1a, Pparg, Ucp2 ) through nutrient-sensing pathways ( Sirt1, Ampk, Nampt ) in peripheral tissues. Materials and methods: Rats were grouped according to food access: Control group (CG, food ad libitum ), Restricted night-fed (RF-n, food access during 2 h at night), Restricted day-fed (RF-d, food access during 2 h in the daytime), and Day-fed (DF, food access during 12 h in the daytime). After 21 days, rats were decapitated at ZT3 (0900-1000 h), ZT11 (1700-1800 h), or ZT17 (2300-2400 h). Blood, liver, brown (BAT) and peri-epididymal (PAT) adipose tissues were collected. Plasma corticosterone and gene expression were evaluated by radioimmunoassay and qPCR, respectively. Results: In the liver, the expression pattern of Clock and Bmal1 shifted when food access was dissociated from rat nocturnal activity; this phenomenon was attenuated in adipose tissues. Daytime feeding also inverted the profile of energy-sensing and lipid metabolism-related genes in the liver, whereas calorie restriction induced a pre-feeding increased expression of these genes. In adipose tissues, Sirt1 expression was modified by daytime feeding and calorie restriction, with concomitant expression of Pgc1a , Pparg , and Ucp2 but not Ampk and Nampt . Conclusion: Feeding restriction reset clock genes and genes involved in lipid metabolism through nutrient-sensing-related genes in rat liver, brown, and peri-epididymal adipose tissues.

https://doi.org/10.20945/2359-3997000000407 31 downloads

COMVC-19: A Program to protect healthcare workers’ mental health during the COVID-19 Pandemic. What we have learned
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Fukuti, Pedro

; Uchôa, Caroline Louise Mesquita

; Mazzoco, Marina Flaborea

; Cruz, Isabella D'Andrea Garcia da

; Echegaray, Mariana V.F.

; Humes, Eduardo de Castro

; Silveira, Júlia Belizário

; Santi, Talita Di

; Miguel, Euripedes Constantino

; Corchs, Felipe

; Fatori, Daniel

; Campello, Guilherme

; Oliveira, Gabriel M. de

; Argolo, Felipe C.

; Ferreira, Felipe de M.

; Machado, Gustavo

; Argeu, Adriana

; Oliveira, Graça Maria Ramos de

; Serafim, Antônio de Pádua

; Siqueira, Luciana de Lima

; Rossi, Luciane de

; Rios, Izabel Cristina

; Oliveira, Talita Rodrigues de

; Antoniazzi, Leilane C. K.

; Gagliotti, Daniel Augusto Mori

; Abelama Neto, Emílio

; Oliveira Junior, Paulo Novais de

; Correia, Aline Villalobo

; Gonçalves, Luca Schilling

; Tortato, Liana Silva

; Busato, Wagner Machado Moraes

; Guimarães-Fernandes, Flávio

; Alves, Marcos

; Leite Netto, Oswaldo Ferreira

; Schoueri, Patrícia de Campos Lindenberg

; Roque, Márcio de Assis

; Merlin, Silvia Stahl

; Boer, Giovana Cardoso Machado

; Sallet, Paulo Clemente

; Malbergier, André

; Spedo, Mariana Abrahão

; Kamitsuji, Carla Satie

; Faria, Elizabeth de

; Moreira, Moacyr Vergara de Godoy

; Kaufman, Arthur

; Abdo, Carmita

; Scanavino, Marco de Tubino

; Lancman, Selma

; Tavares, Hermano

; Polanczyk, Guilherme

; Brunoni, André R.

; Forlenza, Orestes V.

; Barros-Filho, Tarcísio Eloy Pessoa de

Clinics

Journal Metrics
- Sobre o periódico
- SciELO Analytics

2021, Volume 76 elocation e2631

Abstract: En | Text: En | PDF: En

OBJECTIVE: In 2020, the COVID-19 pandemic brought a work and stress overload to healthcare workers, increasing their vulnerability to mental health impairments. In response, the authors created the COMVC-19 program. The program offered preventive actions and mental health treatment for the 22,000 workers of The Hospital das Clinicas da Faculdade de Medicina da Universidade de São Paulo (HCFMUSP). This paper aims to describe its implementation and share what we have learned from this experience. METHODS: Workers were able to easily access the program through a 24/7 hotline. Additionally, a mobile phone app that screened for signs and symptoms of emotional distress and offered psychoeducation and/or referral to treatment was made available. Data from both these sources as well as any subsequent psychiatric evaluations were collected. RESULTS: The first 20 weeks of our project revealed that most participants were female, and part of the nursing staff working directly with COVID-19 patients. The most frequently reported symptoms were: anxiety, depression and sleep disturbances. The most common diagnoses were Adjustment, Anxiety, and Mood disorders. CONCLUSIONS: Implementing a mental health program in a multimodal intervention was feasible in a major quaternary public hospital. Our data also suggests that preventive actions should primarily be aimed at anxiety and depression symptoms, with a particular focus on the nursing staff.

https://doi.org/10.6061/clinics/2021/e2631

Anti-tick effect and cholinesterase inhibition caused by Prosopis juliflora alkaloids: in vitro and in silico studies
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Lima, Hélimar Gonçalves de

; Santos, Francianne Oliveira

; Santos, Acidália Carine Vieira

; Silva, Gisele Dias da

; Santos, Rafaela Jesus dos

; Carneiro, Kelli de Oliveira

; Reis, Isabella Mary Alves

; Estrela, Isabela de Oliveira

; Freitas, Humberto Fonseca de

; Bahiense, Thiago Campanharo

; Pita, Samuel Silva da Rocha

; Uzeda, Rosângela Soares

; Branco, Alexsandro

; Costa, Silvia Lima

; Batatinha, Maria José Moreira

; Botura, Mariana Borges

Revista Brasileira de Parasitologia Veterinária

Journal Metrics
- Sobre o periódico
- SciELO Analytics

2020, Volume 29 N. 2 elocation e019819

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Resumo A atividade carrapaticida in vitro do extrato metanólico (EM) e da fração de alcaloides (FA) de Prosopis juliflora foi investigada, frente ao Rhipicephalus microplus, e relacionada com a inibição da enzima acetilcolinesterase (AChE). A predição in silico das interações de alcaloides dessa fração com a AChE1 de R. microplus (RmAChE1) foi realizada por acoplamento molecular. A atividade carrapaticida foi avaliada, utilizando-se os ensaios de imersão de adultos e larvas. Maior efeito sobre parâmetros reprodutivos de teleóginas foi verificado para a FA, com valor de Concentração Efetiva 50% (CE50) (31.6 mg/mL), quatro vezes menor do que o valor do EM (121 mg/mL). A FA induziu mortalidade de larvas (Concentração Letal de 50% - CL50 = 13,8 mg/mL). A inibição da atividade da AChE de larvas do carrapato foi observada para EM e FA, sendo a FA mais ativa (Concentração Inibitória 50%- CI50 de 0,041mg/mL). As análises químicas da FA permitiram a identificação dos alcaloides prosopina (1), juliprosinina (2) e juliprosopina (3). No ensaio in silico, observou-se que esses alcaloides podem interagir com o sítio ativo da RmAChE1, principalmente por ligações de hidrogênio e interações cátion-pi. Os alcaloides de P. juliflora têm atividade carrapaticida contra R. microplus, atuando através do mecanismo anticolinesterásico.

Abstract We investigated the in vitro acaricide activity of the methanolic extract (ME) and alkaloid-rich fraction (AF) of Prosopis juliflora on Rhipicephalus microplus and correlated this effect with acetylcholinesterase (AChE) inhibition. The acaricide activity was evaluated using adult and larval immersion tests. Also, we studied the possible interaction mechanism of the major alkaloids present in this fraction via molecular docking at the active site of R. microplus AChE1 (RmAChE1). Higher reproductive inhibitory activity of the AF was recorded, with effective concentration (EC50) four times lower than that of the ME (31.6 versus 121 mg/mL). The AF caused mortality of tick larvae, with lethal concentration 50% (LC50) of 13.8 mg/mL. Both ME and AF were seen to have anticholinesterase activity on AChE of R. microplus larvae, while AF was more active with half-maximal inhibitory concentration (IC50) of 0.041 mg/mL. The LC-MS/MS analyses on the AF led to identification of three alkaloids: prosopine (1), juliprosinine (2) and juliprosopine (3). The molecular docking studies revealed that these alkaloids had interactions at the active site of the RmAChE1, mainly relating to hydrogen bonds and cation-pi interactions. We concluded that the alkaloids of P. juliflora showed acaricide activity on R. microplus and acted through an anticholinesterase mechanism.

https://doi.org/10.1590/s1984-29612020036 719 downloads

BRCA1 and BRCA2 rearrangements in Brazilian individuals with Hereditary Breast and Ovarian Cancer Syndrome
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Ewald, Ingrid Petroni

; Cossio, Silvia Liliana

; Palmero, Edenir Inez

; Pinheiro, Manuela

; Nascimento, Ivana Lucia de Oliveira

; Machado, Taisa Manuela Bonfim

; Sandes, Kiyoko Abe

; Toralles, Betânia

; Garicochea, Bernardo

; Izetti, Patricia

; Pereira, Maria Luiza Saraiva

; Bock, Hugo

; Vargas, Fernando Regla

; Moreira, Miguel Ângelo Martins

; Peixoto, Ana

; Teixeira, Manuel R.

; Ashton-Prolla, Patricia

Genetics and Molecular Biology

Journal Metrics
- Sobre o periódico
- SciELO Analytics

jun 2016, Volume 39 N. 2 Pages 223 - 231

Abstract: En | Text: En | PDF: En

Abstract Approximately 5-10% of breast cancers are caused by germline mutations in high penetrance predisposition genes. Among these, BRCA1 and BRCA2, which are associated with the Hereditary Breast and Ovarian Cancer (HBOC) syndrome, are the most frequently affected genes. Recent studies confirm that gene rearrangements, especially in BRCA1, are responsible for a significant proportion of mutations in certain populations. In this study we determined the prevalence of BRCA rearrangements in 145 unrelated Brazilian individuals at risk for HBOC syndrome who had not been previously tested for BRCA mutations. Using Multiplex Ligation-dependent Probe Amplification (MLPA) and a specific PCR-based protocol to identify a Portuguese founder BRCA2 mutation, we identified two (1,4%) individuals with germline BRCA1 rearrangements (c.547+240_5193+178del and c.4675+467_5075-990del) and three probands with the c.156_157insAlu founder BRCA2 rearrangement. Furthermore, two families with false positive MLPA results were shown to carry a deleterious point mutation at the probe binding site. This study comprises the largest Brazilian series of HBOC families tested for BRCA1 and BRCA2 rearrangements to date and includes patients from three regions of the country. The overall observed rearrangement frequency of 3.44% indicates that rearrangements are relatively uncommon in the admixed population of Brazil.

https://doi.org/10.1590/1678-4685-gmb-2014-0350 3356 downloads

Proteção cerebral em pacientes idosos durante implante de stent carotídeo
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics

Cano, Manuel Nicolas

; Cano, Silvia Judith Fortunato de

; Kambara, Antônio Massamitsu

; Moreira, Samuel

; Portela, Luiz Antônio Pezzi

; Costa Jr., J. Ribamar

; Abizaid, Alexandre

; Sousa, Amanda G. M. R.

; Sousa, J. Eduardo

Revista Brasileira de Cardiologia Invasiva

Journal Metrics
- Sobre o periódico
- SciELO Analytics

jun 2013, Volume 21 N. 2 Pages 159 - 164

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

INTRODUÇÃO: O tipo de proteção cerebral utilizado durante o implante de stent carotídeo é controverso em idosos. Nosso objetivo foi avaliar os resultados dos dispositivos de proteção embólica cerebral (PEC), proximal e distal, em pacientes > 70 anos de idade, por meio da ressonância magnética ponderada de difusão (RM-PD). MÉTODOS: Entre 2008 e 2011, 60 pacientes com indicação de stent carotídeo foram randomizados para PEC com Mo.Ma® ou Angioguard®, dos quais 26 tinham > 70 anos de idade. Os resultados da RM-PD realizada antes e 48 horas após o procedimento foram avaliados por neurologista independente e cego para o tipo de PEC utilizado. Foram analisados o número de novos focos isquêmicos, sua localização e o tamanho. RESULTADOS: Novos focos isquêmicos cerebrais foram encontrados em 8/12 (66,7%) pacientes do grupo Mo.Ma® e em 12/14 (85,7%) pacientes do grupo Angioguard® (P = 0,37). A maioria das lesões (> 90%) era ipsilateral à artéria tratada em ambos os grupos, e o tamanho das lesões foi < 0,5 cm na maioria dos casos. O número de lesões por paciente foi menor com o dispositivo Mo.Ma® (mediana [variação]: 3 [1 a 8] lesões vs. 15 [2 a 76] lesões; P < 0,001). Todos os pacientes que tiveram mais de 40 lesões pertenciam ao grupo Angioguard®. CONCLUSÕES: Mesmo utilizando PEC (proximal ou distal), novas lesões isquêmicas foram observadas em ambos os grupos em pacientes idosos. Proporcionalmente maior número de pacientes com Angioguard® teve novos focos isquêmicos se comparados aos pacientes do grupo Mo.Ma®. O dispositivo de PEC Mo.Ma® parece diminuir o número de lesões por paciente.

BACKGROUND: The type of cerebral protection used during carotid stenting in the elderly is controversial. Our objective was to evaluate the results of proximal and distal cerebral embolic protection devices (EPDs), in patients > 70 years through diffusion-weighted magnetic resonance imaging (DW-MRI). METHODS: Between 2008 and 2011, 60 patients with indication for carotid stenting were randomized to EPD with Mo.Ma® or Angioguard®, of which 26 patients were > 70 years of age. Results of DW-MRI performed before and 48 hours after the procedure were evaluated by an independent neurologist blinded to the type of EPD used. New ischemic lesions, their localization and size were analyzed. RESULTS: New cerebral ischemic lesions were found in 8/12 (66.7%) patients in the Mo.Ma® group and 12/14 (85.7%) patients in the Angioguard® group (P = 0.37). The vast majority of the lesions (> 90%) were ipsilateral to the treated artery in both groups and the size of the lesions was < 0.5 cm in most cases. The number of lesions per patient was lower with the Mo.Ma® device (median [variation]: 3 [1 to 8] lesions vs 15 [2 to 76] lesions; P < 0.001). All of the patients with more than 40 lesions were in the Angioguard® group. CONCLUSIONS: Despite the use of EPDs (proximal or distal), new ischemic lesions were observed in both groups in elderly patients. A proportionately larger number of patients with Angioguard® had new ischemic lesions when compared to those with Mo.Ma®. The Mo.Ma® device seems to decrease the number of lesions per patient.

3846 downloads

Effects of inhaled cigarette smoke on the myo-articular system of female rats with collagen-induced arthritis
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics

Moreira, Tayonara L.

; Gomes, Anna Raquel S.

; Dresch, Thais R.

; Silva, Suellen M.

; Valderramas, Silvia

Clinics

Journal Metrics
- Sobre o periódico
- SciELO Analytics

2011, Volume 66 N. 5 Pages 915 - 917

Abstract: En | Text: En | PDF: En

1275 downloads

Fatores de risco associados a trombose em pacientes do estado do Ceará
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics

Moreira, Analice M.

; Rabenhorst, Sílvia H. B.

; Holanda, Rosângela A. R. R.

; Pitombeira, Maria Helena

Revista Brasileira de Hematologia e Hemoterapia

Journal Metrics
- Sobre o periódico
- SciELO Analytics

2009, Volume 31 N. 3 Pages 132 - 136

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Trombose refere-se à formação de constituintes sanguíneos de massa anormal dentro dos vasos e envolve a interação de fatores vasculares, celulares e humorais na corrente sanguínea circulante e pode desenvolver-se em artérias ou veias, sendo designada arterial ou venosa. Tanto a trombose arterial quanto a venosa são patologias de grande interesse médico com alto índice de morbidade e mortalidade. Este estudo objetivou verificar a associação de fatores de risco e o desenvolvimento de trombose venosa e arterial em pacientes do Centro de Hematologia e Hemoterapia do Estado do Ceará (Hemoce). Foram entrevistados 189 pacientes com eventos tromboembólicos e 349 voluntários saudáveis quanto aos fatores ambientais sabidamente envolvidos no desenvolvimento de trombose. Em análises univariadas e multivariadas, fumo (OR- 17,3, 14,9 e 33,3), o álcool (OR- 6,4, 5,8 e 13,5), a idade acima de 40 anos (OR-2) e o sexo feminino (OR- 3,7 e 4,1) foram estatisticamente significativos. O uso do fumo e do álcool, a idade avançada e o sexo feminino contribuíram para a ocorrência de trombose nos pacientes do estado do Ceará.

Thrombosis is the development of a solid mass or plug formed in the living heart or vessels from constituents of the blood and involves vascular, cells and humors factors. Arterial and venous thrombosis are very interesting of medicine because of the high-risk mortality and morbidly. This study aimed of to look at the association between of the factors risk and development of arterial and venous thrombosis in patients of the Hemoterapy and Hematology Center of Ceará (Hemoce). The participants comprised 189 patients with thrombo-embolic events and 349 health control group. At univariate multivariate analysis the factors studied, tabagism (OR- 17,3, 14,9 e 33,3), age > 40 years old (OR-2), alchol (OR- 6,4, 5,8 e 13,5) and femele (OR- 3,7 e 4,1) were significant statistic.

14229 downloads

Estudo retrospectivo do tratamento de leucemia mielóide aguda com o transplante de medula óssea: a experiência brasileira
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics

Hamerschlak, Nelson

; Barton, Débora

; Pasquini, Ricardo

; Sarquis, Yana N.

; Ferreira, Eurípedes

; Moreira, Frederico R.

; Colturato, Vergilio A. R.

; Souza, Carmino A.

; Voltarelli, Júlio

; Piron-Ruiz, Lilian

; Setúbal, Daniela C.

; Zanichelli, Maria A.

; Castro, Cláudio G. de

; Bueno, Nadjanara D.

; Seber, Adriana

; Rotolo, Marco A.

; Silla, Lucia M. R.

; Bittencourt, Henrique

; Souza, Mair P.

; Vigorito, Afonso C.

; Brandalise, Silvia R.

; Maiolino, Angelo

; Nucci, Márcio

; Coelho, Érika

; Ostronoff, Maurício

; Simões, Belinda

; Ruiz, Milton A.

Revista Brasileira de Hematologia e Hemoterapia

Journal Metrics
- Sobre o periódico
- SciELO Analytics

mar 2006, Volume 28 N. 1 Pages 11 - 18

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Dados do Registro Internacional de Transplante de Medula Óssea, International Bone Marrow Transplant Registry (IBMTR) contribuem para o progresso do transplante de medula óssea (TMO) em todo o mundo. Neste artigo relatamos a experiência brasileira em leucemia mielóide aguda e comparamos os resultados do TMO com os dados internacionais. Foi realizado um estudo retrospectivo com dados de tratamento de LMA com o TMO de 16 instituições brasileiras. A análise estatística dos transplantes da modalidade autogênica (TMO auto) e alogênica (TMO alo) foi realizada com o método de Kaplan-Meier e log-rank. Todos os valores de p foram bicaudados. Foram avaliados os dados de 731 pacientes (205 TMO auto e 526 TMO alo). A mediana de sobrevida global dos pacientes submetidos ao TMO auto foi superior à dos submetidos ao TMO alo (1.035 vs 466 dias, p=0,0012). A origem das células-tronco (OCT) no TMO alo em 73% dos pacientes foi de medula óssea (CTMO), em 23% de sangue periférico (CTSP) e em 4% de cordão umbilical. No TMO auto, a OCT foi 63% de CTSP, 22% CTMO e 15% de ambas as fontes. A OCT não teve impacto na sobrevida global (SG). Não houve diferença na SG também entre os pacientes segundo a classificação FAB no TMO alo, mas os pacientes com LMA M3 com o TMO auto tiveram SG longa. Como esperado, a principal causa de óbito entre os pacientes do TMO auto foi relacionada à recidiva de doença (60%), enquanto no TMO alo as principais causas foram a doença enxerto versus hospedeiro e infecções (38%). Em ambos os grupos foi observada SG mais longa nos pacientes tratados em primeira remissão completa (1RC) quando comparados aos de segunda remissão (2RC) e outras fases (p<0,0001), tendo sido observado SG mais longa nos pacientes com LMA de novo quando comparados aos de LMA secundária. No TMO alo a SG foi mais longa com doadores aparentados (538 versus 93 dias p=0,001). A SG foi mais curta nos pacientes que utilizaram irradiação corpórea total no regime de condicionamento (p=0,0001). No TMO alo foram observados mais pacientes com doença avançada (60%) enquanto no grupo de TMO auto 24% eram da morfologia M3, o que pode explicar a diferença de SG entre os grupos. O resultado do estudo está em concordância com os dados do IBMTR. Considerando a natureza do estudo, retrospectivo e multicêntrico, os resultados devem ser analisados com cautela.

Data from the International Bone Marrow Transplant Registry (IBMTR) contribute for the improvement of Bone Marrow Transplant (BMT) worldwide. We studied the Brazilian experience in BMT for AML to compare this with international data. We performed a retrospective study by sending questionnaires to 16 BMT centers regarding clinical and treatment variables. Statistical analyses concerning autologous BMT (autoBMT) and allogeneic BMT (alloBMT) were performed using the Kaplan-Meier method and the log-rank test. All p-values were two-tailed. We collected data from 731 patients (205 autoBMT and 526 alloBMT). Median overall survival (OS) for autoBMT patients was longer than alloBMT patients (1035 vs. 466 days, p=0.0012). AlloBMT stem cell source (SCS): 73% bone marrow stem cell (BMSC), 23% peripheral blood stem cells (PBSC) and 4% umbilical cord blood. Among the autoBMT patients, the SCS was 63% PBSC, 22% BMSC and 15% both. The SCS did not impact on OS. There was no difference in OS between different FAB classifications in the alloBMT group, but in the autoBMT the M3 patients had longer survival. As expected, the main cause of mortality among autoBMT patients was related to disease relapse (60%), while in the alloBMT, to infection (38%). In both groups we found longer OS in first complete remission (1CR) compared to second (2CR) and other (p<0.0001), and longer OS in de novo AML than in secondary. In the alloBMT group we found more patients with advanced disease (60%), while in the autoBMT group, we found more M3 patients (24%), which could explain the difference in OS. Most of our results are in accordance with IBMTR data. One should consider the fact that this is a retrospective study and our findings should be analysed with caution.

28615 downloads Cited 4 times in SciELO

10.

Caracterização de um isolado do Pepper mild mottle virus que não quebra a resistência do gene L3 em Capsicum sp.
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics

Eiras, Marcelo

; Chaves, Alexandre L. R.

; Moreira, Silvia R.

; Araujo, Jansen de

; Colariccio, Addolorata

Fitopatologia Brasileira

Journal Metrics
- Sobre o periódico
- SciELO Analytics

dec 2004, Volume 29 N. 6 Pages 670 - 675

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Sementes de pimenta (Capsicum baccatum) 'Dedo de Moça' destinadas ao plantio comercial e adquiridas no município de São Paulo, SP, analisadas quanto à presença de vírus, por meio de testes biológicos e sorológicos revelaram-se infetadas por uma estirpe do Pepper mild mottle virus (PMMoV). Para confirmar a identidade do isolado, promoveu-se a RT-PCR com oligonucleotídeos que flanqueiam a ORF da capa protéica de espécies do gênero Tobamovirus do subgrupo 1. Os fragmentos de DNA amplificados, quando seqüenciados e comparados com outros isolados de tobamovírus depositados no GenBank, apresentaram valores de identidade de nucleotídeos entre 94 e 100% com outras seqüências de PMMoV, inferiores a 75% para as demais espécies de tobamovírus do subgrupo I (Tobacco mosaic virus, Tomato mosaic virus e Odontoglossum ringspot virus) e 65% para os tobamovírus dos subgrupos II e III. O PMMoV-BR revelou 100% de identidade com isolados japoneses, sugerindo que este patógeno pode ter sido introduzido daquele país. A seqüência de aminoácidos deduzidos da capa protéica indicou também, que este isolado não é capaz de quebrar a resistência do gene L3 de Capsicum spp. Fato confirmado pelos sintomas causados nas hospedeiras diferenciais de Capsicum spp., verificando-se que este isolado não foi capaz de infetar plantas de C. chinense (L3) e C. chacoense (L4). Estes resultados confirmaram a importância da caracterização dos isolados de tobamovírus, fundamental para adequação de medidas de controle, principalmente, prevenindo a entrada e posterior disseminação do patógeno em novas áreas de cultivo.

A strain of Pepper mild mottle virus (PMMoV) was identified by biological and serological analysis of pepper (Capsicum baccatum) 'Dedo de Moça' seeds from São Paulo, SP, Brazil. To confirm these results, RT-PCR was performed with specific primers flanking the coat protein (CP) ORF of tobamoviruses in subgroup 1. The DNA-amplified fragments, when sequenced and compared with other tobamovirus CP sequences stored in the GenBank, showed nucleotide similarity between 94 to 100% with other PMMoV CP sequences, and below 75% with the subgroup I tobamovirus species (Tobacco mosaic virus, Tomato mosaic virus and Odontoglossum ringspot virus) and 65% with species in the subgroups II and III. The Brazilian isolate showed 100% identity with a Japanese isolate, strongly suggesting that this pathogen could have been introduced from that country. This fact confirms the importance of the isolate's characterization, in order to establish adequate control measures to guarantee healthy seed interchange and to avoid the introduction and spread of tobamoviruses into new growing areas. The deduced CP aminoacids sequence showed that the PMMoV-BR was not capable to overcome L3 gene resistance. This fact was confirmed by the inoculation and reaction of differential Capsicum species. The Brazilian isolate was not able to infect C. chinense (L3) and C. chacoense (L4).

2361 downloads Cited 1 time in SciELO

11.

Caracterização de uma nova estirpe do Tomato mosaic virus isolada de tomateiro no Estado de São Paulo
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics

Moreira, Silvia R.

; Eiras, Marcelo

; Chaves, Alexandre L.R.

; Galleti, Silvia R.

; Colariccio, Addolorata

Fitopatologia Brasileira

Journal Metrics
- Sobre o periódico
- SciELO Analytics

dec 2003, Volume 28 N. 6 Pages 602 - 607

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Um vírus isolado em Guaratinguetá, SP, de tomateiro (Lycoporsicon esculentum) 'Santa Clara' com sintomas característicos de virose, foi estudado por meio de plantas indicadoras e de hospedeiras diferenciais pertencentes a linhagens homozigotas de tomateiro, ensaios de estabilidade in vitro, purificação, contrastação negativa, testes sorológicos de ELISA-PTA e imunomicroscopia eletrônica, utilizando-se anti-soros contra diferentes vírus do gênero Tobamovirus. O isolado infetou plantas de espécies de amarantáceas, quenopodiáceas e solanáceas. Plantas de Chenopodium amaranticolor reagiram com sintomas locais e sistêmicos; Nicotiana sylvestris e N. rustica reagiram com lesões locais e a linhagem homozigota de tomateiro Tm-2 mostrou-se imune ao vírus. Nas preparações purificadas de contrastação negativa, foram observadas partículas rígidas e alongadas com cerca de 300 nm. O isolado foi identificado como um tobamovírus, com anti-soros contra o Tomato mosaic virus (ToMV) e Tobacco mosaic virus (TMV). As hospedeiras diferenciais indicaram se tratar de ToMV. Por meio de RT-PCR, com oligonucleotídeos para o gene da capa protéica de espécies do gênero Tobamovirus do subgrupo 1, amplificaram-se fragmentos com 850 pb que foram clonados e seqüenciados. A similaridade de nucleotídeos e aminoácidos deduzidos variou entre 85 e 91% quando a seqüência do ToMV-SP foi comparada com outras sequências de ToMV, 75 e 83% quando comparada com as do TMV e 67 e 72% quando comparada com a do Odontoglossum ringspot virus (ORSV). As comparações com outras espécies de tobamovírus apresentaram valores de similaridade inferiores a 65%. Confirmou-se a identidade dos vírus como sendo uma nova estirpe do ToMV.

Tomato (Lycoporsicon esculentum) plants 'Santa Clara' from the city of Guaratinguetá in the State of São Paulo, Brazil, show typical virus symptoms in this study. The evaluation was carried out by using indicator plants and differential tomato genotypes with resistance factors of Tm-1, Tm-2 and Tm-2² ; virus stability in sap; purification; and negative staining, PTA-ELISA and ISEM. The isolates infected plants from several species of Amaranthaceae, Chenopodiaceae and Solanaceae. Chenopodium amaranticolor plants reacted with local and systemic symptoms; Nicotiana sylvestris and N. rustica reacted with local lesions and the tomato Tm-2 showed immunity. Rod-shaped particles about 300 nm were observed in negatively stained preparations. The isolate reacted against Tomato mosaic virus (ToMV) and Tobacco mosaic virus (TMV) antisera. Based on host plants, the isolate was identified as tToMV and by the tomato genotype response, but it could be not identified as the 0 or I ToMV strain. In order to confirm the identity of the virus, RT-PCR was performed with specific primers for the tobamovirus coat protein gene and the amplified DNA was cloned and sequenced. The nucleotides and deduced aminoacids showed 85 and 91% similarity when compared to ToMV sequences, 75 and 83% similarity with those of TMV, and 67 and 72%, with Odontoglossun ringspot virus (ORSV). For other tobamovirus species, the similarity values were lower than 65%. The virus was confirmed as a new ToMV strain.

2920 downloads

12.

Characterization of typical and atypical enteropathogenic Escherichia coli (EPEC) strains of the classical O55 serogroup by RAPD analysis
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics

Girão, Dennys M.

; Bando, Sílvia Y.

; Girão, Valéria Brígido de C.

; Moreira-Filho, Carlos A.

; Fracalanzza, Sérgio Eduardo L.

; Trabulsi, Luiz R.

; Monteiro-Neto, Valério

Revista de Microbiologia

Journal Metrics
- Sobre o periódico
- SciELO Analytics

dec 1999, Volume 30 N. 4 Pages 365 - 368

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Quarenta e uma amostras de Escherichia coli enteropatogênica (EPEC) típicas e atípicas do sorogrupo O55 foram analisadas com relação à diversidade genética através da técnica de RAPD (random amplified polymorphic DNA). Todas amostras de EPEC O55 típicas ficaram localizadas em 2 grupos (A e C) e pertenciam ao sorotipo O55:H6, enquanto que o grupo B compreendia todas as amostras atípicas, as quais eram do sorotipo O55:H7. Os três grupos apresentavam também amostras imóveis. A técnica de RAPD pode ser uma ferramenta de grande utilidade em estudos epidemiológicos da infecção pela E. coli O55.

The genetic diversity of 41 typical and atypical enteropathogenic Escherichia coli (EPEC) strains of the serogroup O55 was analyzed by using the random amplified polymorphic DNA (RAPD) method. All typical EPEC O55 strains were grouped in two clusters (A and C) and belonged to the serotype O55:H6, while cluster B included all atypical strains, which were of the serotype O55:H7. The three groups also included non-motile strains. RAPD may be a useful method for epidemiological studies on E. coli O55 infection.

4828 downloads

Showing

itens per page

Page of 1 Next

Select one or more results

All Alphabetic

Results

Comparative chart Download CSV

Statistics of

Send result

To*

Use ; (semicolon) to insert more emails.

Send to email

This page

Selected records

All references (max. 300)

Your email

Subject

Comments

Export format:

RIS (for EndNote, ProCite, Reference Manager, RefWorks, Citavi, etc.)

BibTeX

Citation

CSV (for Excel, etc)

Export:

This page

Selected itens

All references (max. 2000)

Sem resultados

No documents were found for your search

Glossary and search help

You can enrich your search in a very simple way. Use the search indexes combined with the connectors (AND or OR) and specify more your search.

For example, if you want to search for articles about
cases of dengue in Brasil in 2015, use:
ti:dengue and publication_year:2015 and aff_country:Brasil

See below the complete list of search indexes that can be used:

Index code	Element
ti	article title
au	author
kw	article keywords
subject	subject (title words, abstract and keywords)
ab	abstract
ta	journal short title (e.g. Cad. Saúde Pública)
journal_title	journal full title (e.g. Cadernos de Saúde Pública)
la	publication language code (e.g. pt - Portuguese, es - Spanish)
type	document type
pid	publication identifier
publication_year	publication year of publication
sponsor	sponsor
aff_country	country code of the author's affiliation
aff_institution	author affiliation institution
volume	article volume
issue	article issue
elocation	elocation
doi	DOI number
issn	journal ISSN
in	SciELO colection code (e.g. scl - Brasil, col - Colômbia)
use_license	article usage license code

SciELO - Scientific Electronic Library Online
Rua Dr. Diogo de Faria, 1087 – 9º andar – Vila Clementino 04037-003 São Paulo/SP - Brasil
Email: scielo@scielo.org

All the contents of this site www.scielo.br, except where otherwise noted, is licensed under a Creative Commons Attribution License.
more »