Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 4.298
Primeira ... 34567891011 ... Última
Imagem não selecionada

Imprime registro no formato completo
A three-phase epidemiological study of short and long sleepers in a middle-aged Chinese population: prevalence and characteristics BJMBR
Hao,Y.L.; Zhang,B.; Jia,F.J.; Li,X.L.; Tang,Y.; Ren,Y.Z.; Liu,W.H..
Epidemiological studies of short and long sleepers have not been conducted previously. We collected socioeconomic, psychological, and polysomnographic characteristics of 6501 parents (3252 men and 3249 women) of 4036 primary school children in Guangzhou city. The study data were collected in three phases. The overall prevalence of short (5 h or less) and long (10 h or more) sleep duration was 0.52 and 0.64%, respectively. Long sleepers had higher Eysenck Personality Questionnaire neuroticism scores [odds ratio (OR)=1.224, 95% confidence interval (CI)=1.047-1.409] and lower education levels (OR=0.740, 95%CI=0.631-0.849) than short sleepers. In the polysomnographic assessment, short, long, and normal sleepers (7-8 h) shared similar durations of Stage 3 sleep...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Short sleeper; Long sleeper; Prevalence; Characteristics; Chinese.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2014000200157
Imagem não selecionada

Imprime registro no formato completo
A time series analysis of meteorological factors and hospital outpatient admissions for cardiovascular disease in the Northern district of Guizhou Province, China BJMBR
Jie,Y.; Houjin,H.; Mengxue,Y.; Wei,Q.; Jie,X..
Findings on the effects of weather on health, especially the effects of ambient temperature on overall morbidity, remain inconsistent. We conducted a time series study to examine the acute effects of meteorological factors (mainly air temperature) on daily hospital outpatient admissions for cardiovascular disease (CVD) in Zunyi City, China, from January 1, 2007 to November 30, 2009. We used the generalized additive model with penalized splines to analyze hospital outpatient admissions, climatic parameters, and covariate data. Results show that, in Zunyi, air temperature was associated with hospital outpatient admission for CVD. When air temperature was less than 10°C, hospital outpatient admissions for CVD increased 1.07-fold with each increase of 1°C, and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Temperature; Cardiovascular disease; Hospital outpatient admission.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2014000800689
Imagem não selecionada

Imprime registro no formato completo
A time-dependent, two-step binding mode of the nitro dye flavianic acid to trypsin in acid media BJMBR
Schneedorf,J.M.; Santoro,M.M.; Lovrien,R.E.; Mares-Guia,M..
Synthetic dyes bind to proteins causing selective coprecipitation of the complexes in acid aqueous solution by a process of reversible denaturation that can be used as an alternative method for protein fractionation. The events that occur before precipitation were investigated by equilibrium dialysis using bovine trypsin and flavianic acid as a model able to cause coprecipitation. A two-step mode of interaction was found to be dependent on the incubation periods allowed for binding, with pronounced binding occurring after 42 h of incubation. The first step seems to involve hydration effects and conformational changes induced by binding of the first dye molecule, following rapid denaturation due to the binding of six additional flavianate anions to the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Dye binding; Binding isotherm; Coprecipitation.
Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2001000800012
Imagem não selecionada

Imprime registro no formato completo
A tobacco cDNA reveals two different transcription patterns in vegetative and reproductive organs BJMBR
Silva,I. da; Angelo,P.C.S.; Molfetta,J.B.; Ferraz,M.T.; Silva,L.L.P. da; Goldman,G.H.; Goldman,M.H.S..
In order to identify genes expressed in the pistil that may have a role in the reproduction process, we have established an expressed sequence tags project to randomly sequence clones from a Nicotiana tabacum stigma/style cDNA library. A cDNA clone (MTL-8) showing high sequence similarity to genes encoding glycine-rich RNA-binding proteins was chosen for further characterization. Based on the extensive identity of MTL-8 to the RGP-1a sequence of N. sylvestris, a primer was defined to extend the 5' sequence of MTL-8 by RT-PCR from stigma/style RNAs. The amplification product was sequenced and it was confirmed that MTL-8 corresponds to an mRNA encoding a glycine-rich RNA-binding protein. Two transcripts of different sizes and expression patterns were...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Glycine-rich protein; Nicotiana tabacum; Pistil expression; RNA-binding protein; Stress conditions; Virus infection.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2002000800001
Imagem não selecionada

Imprime registro no formato completo
A tribute to Samuel MacDonald McCann (1925-2007): in honor of one of the last pioneers of Neuroendocrinology BJMBR
Antunes-Rodrigues,J.; Bedran de Castro,J.C.; Franci,C.R.; Anselmo Franci,J.A.; Pazos Moura,C.C.; Moura,E.G.; Marubayashi,U..
Tipo: Info:eu-repo/semantics/other
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2007000500013
Imagem não selecionada

Imprime registro no formato completo
ABCB1 C1236T, G2677T/A and C3435T polymorphisms in systemic lupus erythematosus patients BJMBR
Gonzalez,T.P.; Mucenic,T.; Brenol,J.C.T.; Xavier,R.M.; Schiengold,M.; Chies,J.A.B..
P-glycoprotein (Pgp), the ABCB1 gene product, acts as an efflux pump that transports a large variety of substrates and is a mechanism of cell protection against xenobiotics. An increasing number of studies have shown that some ABCB1 polymorphisms may affect Pgp expression and activity, as well as affecting the development and susceptibility to diseases and pharmacological response. High activity of Pgp has been detected in systemic lupus erythematosus (SLE) patients. The C1236T, G2677T/A, and C3435T are the most commonly studied single nucleotide polymorphisms in the ABCB1 gene. Therefore, their frequencies were determined in Brazilian individuals with European ancestry (N = 143) and in SLE patients (N = 137). Genotyping was performed by PCR-RFLP analysis...
Tipo: Info:eu-repo/semantics/other Palavras-chave: ABCB1; MDR1; P-glycoprotein; Polymorphism; Systemic lupus erythematosus.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2008000900005
Imagem não selecionada

Imprime registro no formato completo
Aberrant crypt foci and colon cancer: comparison between a short- and medium-term bioassay for colon carcinogenesis using dimethylhydrazine in Wistar rats BJMBR
Rodrigues,M.A.M.; Silva,L.A.G.; Salvadori,D.M.F.; de Camargo,J.L.V.; Montenegro,M.R..
Aberrant crypt foci (ACF) in the colon of carcinogen-treated rodents are considered to be the earliest hallmark of colon carcinogenesis. In the present study the relationship between a short-term (4 weeks) and medium-term (30 weeks) assay was assessed in a model of colon carcinogenesis induced by dimethylhydrazine (DMH) in the rat. Six-week-old male Wistar rats were given subcutaneous injections of DMH (40 mg/kg) twice a week for 2 weeks and killed at the end of the 4th or 30th week. ACF were scored for number, distribution pattern along the colon and crypt multiplicity in 0.1% methylene-blue whole-mount preparations. ACF were distinguished from normal crypts by their larger size and elliptical shape. The incidence, distribution and morphology of colon...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aberrant crypt foci; Preneoplastic lesion; Colon carcinogenesis.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2002000300010
Imagem não selecionada

Imprime registro no formato completo
Aberrant signaling in T-cell acute lymphoblastic leukemia: biological and therapeutic implications BJMBR
Cardoso,B.A.; Gírio,A.; Henriques,C.; Martins,L.R.; Santos,C.; Silva,A.; Barata,J.T..
T-cell acute lymphoblastic leukemia (T-ALL) is a biologically heterogeneous disease with respect to phenotype, gene expression profile and activation of particular intracellular signaling pathways. Despite very significant improvements, current therapeutic regimens still fail to cure a portion of the patients and frequently implicate the use of aggressive protocols with long-term side effects. In this review, we focused on how deregulation of critical signaling pathways, in particular Notch, PI3K/Akt, MAPK, Jak/STAT and TGF-ß, may contribute to T-ALL. Identifying the alterations that affect intracellular pathways that regulate cell cycle and apoptosis is essential to understanding the biology of this malignancy, to define more effective markers for the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: T-cell acute lymphoblastic leukemia; Notch; PI3K/Akt; MAPK; Jak/STAT; TGF-ß.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2008000500001
Imagem não selecionada

Imprime registro no formato completo
Abnormal nocturnal blood pressure fall in normotensive adolescents with insulin-dependent diabetes is ameliorated following glycemic improvement BJMBR
Ferreira,S.R.G.; Cesarini,P.R.; Vivolo,M.A.; Zanella,M.T..
Lack of the physiological nocturnal fall in blood pressure (BP) has been found in diabetics and it seems to be related to the presence of diabetic complications. The present study examined the changes in the nocturnal BP pattern of 8 normotensive insulin-dependent diabetic adolescents without nephropathy following improvement in glycemic control induced by an 8-day program of adequate diet and exercise. The same number of age- and sex-matched control subjects were studied. During the first and eighth nights of the program, BP was obtained by ambulatory BP monitoring. After a 10-min rest, 3 BP and heart rate (HR) recordings were taken and the mean values were considered to represent their awake values. The monitor was programmed to cuff insufflation every...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Insulin/dependent diabetes mellitus; Blood pressure; Glycemic control.
Ano: 1998 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1998000400008
Imagem não selecionada

Imprime registro no formato completo
Abnormal proliferative response of the carotid artery of spontaneously hypertensive rats after angioplasty may be related to the depolarized state of its smooth muscle cells BJMBR
Dalle Lucca,S.L.D.; Dalle Lucca,J.J.; Borges,A.C.R.; Ihara,S.S.M.; Paiva,T.B..
Hypertension is one of the major precursors of atherosclerotic vascular disease, and vascular smooth muscle abnormal cell replication is a key feature of plaque formation. The present study was conducted to examine the relationship between hypertension and smooth muscle cell proliferation after balloon injury and to correlate neointima formation with resting membrane potential of uninjured smooth muscle cells, since it has been suggested that altered vascular function in hypertension may be related to the resetting of the resting membrane potential in spontaneously hypertensive rats (SHR). Neointima formation was induced by balloon injury to the carotid arteries of SHR and renovascular hypertensive rats (1K-1C), as well as in their normotensive controls,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: SHR; Renovascular hypertension; Restenosis; Smooth muscle cell; Membrane potential.
Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2000000800008
Imagem não selecionada

Imprime registro no formato completo
Abnormal response of left ventricular systolic function to submaximal exercise in post-partial left ventriculotomy patients BJMBR
Herdy,A.H.; Moritz,P.; Assis,A.V.; Ribeiro,F.; Collaço,J.; Ribeiro,J.P..
Patients with heart failure who have undergone partial left ventriculotomy improve resting left ventricular systolic function, but have limited functional capacity. We studied systolic and diastolic left ventricular function at rest and during submaximal exercise in patients with previous partial left ventriculotomy and in patients with heart failure who had not been operated, matched for maximal and submaximal exercise capacity. Nine patients with heart failure previously submitted to partial left ventriculotomy were compared with 9 patients with heart failure who had not been operated. All patients performed a cardiopulmonary exercise test with measurement of peak oxygen uptake and anaerobic threshold. Radionuclide left ventriculography was performed to...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Heart failure; Radionuclide ventriculography; Anaerobic threshold; Left ventricular diastolic function; Left ventricular ejection fraction.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2007000200002
Imagem não selecionada

Imprime registro no formato completo
Abnormal subcellular distribution of GLUT4 protein in obese and insulin-treated diabetic female dogs BJMBR
Vargas,A.M.; Barros,R.P.A.; Zampieri,R.A.; Okamoto,M.M.; de Carvalho Papa,P.; Machado,U.F..
The GLUT4 transporter plays a key role in insulin-induced glucose uptake, which is impaired in insulin resistance. The objective of the present study was to investigate the tissue content and the subcellular distribution of GLUT4 protein in 4- to 12-year-old control, obese and insulin-treated diabetic mongrel female dogs (4 animals per group). The parametrial white adipose tissue was sampled and processed to obtain both plasma membrane and microsome subcellular fractions for GLUT4 analysis by Western blotting. There was no significant difference in glycemia and insulinemia between control and obese animals. Diabetic dogs showed hyperglycemia (369.9 ± 89.9 mg/dl). Compared to control, the plasma membrane GLUT4, reported per g tissue, was reduced by 55% (P...
Tipo: Info:eu-repo/semantics/other Palavras-chave: Diabetes; Obesity; Insulin resistance; GLUT4; Adipose tissue; Plasma membrane.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2004000700020
Imagem não selecionada

Imprime registro no formato completo
Abnormalities of glucose metabolism in spontaneously hypertensive rats BJMBR
Gouveia,L.M.F.B.; Kettelhut,I.C.; Foss,M.C..
Abnormalities in glucose metabolism and insulin action are frequently detected in patients with essential hypertension. Spontaneously hypertensive rats (SHR) have been used as an experimental model to understand this pathological condition. The objective of the present study was to assess glucose metabolism and insulin action in SHR and Wistar rats under fed and fasting conditions. Peripheral glucose utilization was estimated by kinetic studies with [6-³H]-glucose and gluconeogenetic activity was measured during continuous [14C]-bicarbonate infusion. Plasma glucose levels were higher in the SHR group. Plasma insulin levels in the fed state were higher in the SHR group (99.8 ± 6.5 µM) than in the control group (70.4 ± 3.6 µM). Muscle glycogen content was...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Peripheral glucose utilization; Gluconeogenesis; Insulin resistance; Spontaneously hypertensive rats.
Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2000001100015
Imagem não selecionada

Imprime registro no formato completo
Abnormalities of hippocampal signal intensity in patients with familial mesial temporal lobe epilepsy BJMBR
Coan,A.C.; Kobayashi,E.; Lopes-Cendes,I.; Li,L.M.; Cendes,F..
Mesial temporal lobe epilepsy (MTLE) is associated with hippocampal atrophy and hippocampal signal abnormalities. In our series of familial MTLE (FMTLE), we found a high proportion of hippocampal abnormalities. To quantify signal abnormalities in patients with FMTLE we studied 152 individuals (46 of them asymptomatic) with FMTLE. We used NIH-Image® for volumetry and signal quantification in coronal T1 inversion recovery and T2 for all cross-sections of the hippocampus. Values diverging by 2 or more SD from the control mean were considered abnormal. T2 hippocampal signal abnormalities were found in 52% of all individuals: 54% of affected subjects and 48% of asymptomatic subjects. T1 hippocampal signal changes were found in 34% of all individuals: 42.5% of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Hippocampal signal abnormalities; Familial mesial temporal lobe epilepsy; Hippocampal volumetry; Magnetic resonance imaging.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2004000600007
Imagem não selecionada

Imprime registro no formato completo
Absence of hepatitis B virus DNA in patients with hepatitis C and non-A-E hepatitis in the State of São Paulo, Brazil BJMBR
Souza,L.O.; Pinho,J.R.R.; Carrilho,F.J.; da Silva,L.C..
Occult hepatitis B virus (HBV) infection has been reported as cases in which HBV DNA was detected despite the absence of any HBV serological markers or in cases in which anti-HBc antibody was the sole marker. The aim of the present study was to determine, using the polymerase chain reaction (PCR), whether HBV infection occurs in hepatitis C and non-A-E hepatitis patients without serological evidence of hepatitis B infection in São Paulo State. Two different populations were analyzed: 1) non-A-E hepatitis patients, including 12 patients with acute and 50 patients with chronic hepatic disorders without serological evidence of infection with known hepatitis viruses; 2) 43 patients previously diagnosed as hepatitis C with positive results for anti-HCV and HCV...
Tipo: Info:eu-repo/semantics/other Palavras-chave: Hepatitis B virus; Non-A-E hepatitis; Polymerase chain reaction.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2004001100011
Imagem não selecionada

Imprime registro no formato completo
Absence of linkage between MHC and a gene involved in susceptibility to human schistosomiasis BJMBR
Chiarella,J.M.; Goldberg,A.C.; Abel,L.; Carvalho,E.M.; Kalil,J.; Dessein,A..
Six hundred million people are at risk of infection by Schistosoma mansoni. MHC haplotypes have been reported to segregate with susceptibility to schistosomiasis in murine models. In humans, a major gene related to susceptibility/resistance to infection by S. mansoni (SM1) and displaying the mean fecal egg count as phenotype was detected by segregation analysis. This gene displayed a codominant mode of inheritance with an estimated frequency of 0.20-0.25 for the deleterious allele and accounted for more than 50% of the variance of infection levels. To determine if the SM1 gene segregates with the human MHC chromosomal region, we performed a linkage study by the lod score method. We typed for HLA-A, B, C, DR and DQ antigens in 11 informative families from...
Tipo: Info:eu-repo/semantics/article Palavras-chave: HLA; Linkage study; Human schistosomiasis.
Ano: 1998 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1998000500010
Imagem não selecionada

Imprime registro no formato completo
Absence of peripheral blood mononuclear cells priming in hemodialysis patients BJMBR
Santos,B.C.; Starobinas,N.; Barbuto,J.A.M.; Russo,M.; Schor,N..
As a consequence of the proinflammatory environment occurring in dialytic patients, cytokine overproduction has been implicated in hemodialysis co-morbidity. However, there are discrepancies among the various studies that have analyzed TNF-alpha synthesis and the presence of peripheral blood mononuclear cell (PBMC) priming in this clinical setting. We measured bioactive cytokine by the L929 cell bioassay, and evaluated PBMC TNF-alpha production by 32 hemodialysis patients (HP) and 51 controls. No difference in TNF-alpha secretion was observed between controls and HP (859 ± 141 vs 697 ± 130 U/10(6) cells). Lipopolysaccharide (5 µg/ml) did not induce any further TNF-alpha release, showing no PBMC priming. Paraformaldehyde-fixed HP PBMC were not cytotoxic to...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cytokine; Stress response; Translational control; Transcriptional blockage; Priming; Membrane-anchored tumor necrosis factor.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2003000200009
Imagem não selecionada

Imprime registro no formato completo
Absence-like seizures in adult rats following pilocarpine-induced status epilepticus early in life BJMBR
Ferreira,B.L.C.; Valle,A.C.; Cavalheiro,E.A.; Timo-Iaria,C..
Administration of pilocarpine causes epilepsy in rats if status epilepticus (SE) is induced at an early age. To determine in detail the electrophysiological patterns of the epileptogenic activity in these animals, 46 Wistar rats, 7-17 days old, were subjected to SE induced by pilocarpine and electro-oscillograms from the cortex, hippocampus, amygdala, thalamus and hypothalamus, as well as head, rostrum and vibrissa, eye, ear and forelimb movements, were recorded 120 days later. Six control animals of the same age range did not show any signs of epilepsy. In all the rats subjected to SE, iterative spike-wave complexes (8.1 ± 0.5 Hz in frequency, 18.9 ± 9.1 s in duration) were recorded from the frontal cortex during absence fits. However, similar spike-wave...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Epilepsy; Absence seizures; Spike-wave; Status epilepticus; Pilocarpine.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2003001200010
Imagem não selecionada

Imprime registro no formato completo
Absorption mechanism of three curcumin constituents through in situ intestinal perfusion method BJMBR
Wang,Y.-H.; Ke,X.-M.; Zhang,C.-H.; Yang,R.-P..
This study aimed to investigate the absorption mechanism of three curcumin constituents in rat small intestines. Self-emulsification was used to solubilize the three curcumin constituents, and the rat in situ intestinal perfusion method was used to study factors on drug absorption, including drug mass concentration, absorption site, and the different types and concentrations of absorption inhibitors. Within the scope of experimental concentrations, three curcumin constituents were absorbed in rat small intestines through the active transport mechanism.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Curcumin; Demethoxycurcumin; Bisdethoxycurcumin; In situ intestinal perfusion; Absorption mechanism.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017001100612
Imagem não selecionada

Imprime registro no formato completo
Abundant immunohistochemical expression of dopamine D2 receptor and p53 protein in meningiomas: follow-up, relation to gender, age, tumor grade, and recurrence BJMBR
Trott,G.; Pereira-Lima,J.F.S.; Leães,C.G.S.; Ferreira,N.P.; Barbosa-Coutinho,L.M.; Oliveira,M.C..
Meningiomas are common, usually benign tumors, with a high postoperative recurrence rate. However, the genesis and development of these tumors remain controversial. We aimed to investigate the presence and implications of a mutated p53 protein and dopamine D2 receptor in a representative series of meningiomas and to correlate these findings with age, gender, tumor grade, and recurrence. Tumor tissue samples of 157 patients diagnosed with meningioma (37 males and 120 females, mean age 53.6±14.3 years) who underwent surgical resection between 2003 and 2012 at our institution were immunohistochemically evaluated for the presence of p53 protein and dopamine D2 receptor and were followed-up to analyze tumor recurrence or regrowth. Tumors were classified as...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Receptors; Dopamine D2; Immunohistochemistry; Meningioma; Tumor suppressor protein p53; Recurrence.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2015000500415
Registros recuperados: 4.298
Primeira ... 34567891011 ... Última
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional