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Registros recuperados: 4.329 | |
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Pesquero,J.B.; Bader,M.. |
The participation of the kallikrein-kinin system, comprising the serine proteases kallikreins, the protein substrates kininogens and the effective peptides kinins, in some pathological processes like hypertension and cardiovascular diseases is still a matter of controversy. The use of different experimental set-ups in concert with the development of potent and specific inhibitors and antagonists for the system has highlighted its importance but the results still lack conclusivity. Over the last few years, transgenic and gene-targeting technologies associated with molecular biology tools have provided specific information about the elusive role of the kallikrein-kinin system in the control of blood pressure and electrolyte homeostasis. cDNA and genomic... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Kallikrein; Kinins; Bradykinin; Molecular biology; Transgenics. |
Ano: 1998 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1998000900013 |
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Santana,A.N.C.; Trindade-Filho,E.M.; Cunha,R.B.; Sousa,M.V.; Cavalheiro,E.A.; Carvalho,K.M.. |
In this study, the behavioral and electroencephalographic (EEG) analysis of seizures induced by the intrahippocampal injection in rats of granulitoxin, a neurotoxic peptide from the sea anemone Bunodosoma granulifera, was determined. The first alterations occurred during microinjection of granulitoxin (8 µg) into the dorsal hippocampus and consisted of seizure activity that began in the hippocampus and spread rapidly to the occipital cortex. This activity lasted 20-30 s, and during this period the rats presented immobility. During the first 40-50 min after its administration, three to four other similar short EEG seizure periods occurred and the rats presented the following behavioral alterations: akinesia, facial automatisms, head tremor, salivation,... |
Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Bunodosoma granulifera; Granulitoxin; Sea anemones; Toxic peptides; Seizure; Electroencephalographic assay. |
Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2001000600016 |
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França,E. de; Alves,J.G.B.; Hutz,M.H.. |
Genetic studies have suggested that polymorphisms of genes coding for apolipoproteins are significant determinants of serum lipoprotein and lipid levels in adults. However, only a few studies have investigated the association of these polymorphisms in children. Therefore, in the present investigation we studied the distribution of APOA1 -75 G>A, +83 C>T, APOC3 -482 C>T, -455 T>C and 3238 C>G, and APOA4 Q360H and T347S polymorphisms and their influence on plasma lipoprotein levels in children from a Brazilian northeastern admixed population. The seven polymorphic sites were genotyped in 414 children aged 5 to 15 years (mean 8.9 ± 2.9). The genotypes of the seven polymorphic sites were assessed by PCR-RFLP methods. The frequencies of the less... |
Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Apolipoproteins; Gene variants; Lipid levels; Children. |
Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2005000400006 |
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Gronner,M.F.; Bosi,P.L.; Carvalho,A.M.; Casale,G.; Contrera,D.; Pereira,M.A.; Diogo,T.M.; Torquato,M.T.C.G.; Souza,G.M.D.; Oishi,J.; Leal,A.M.O.. |
The present study estimated the prevalence of metabolic syndrome (MS) according to the criteria established by the National Cholesterol Education Program-Adult Treatment Panel III (NCEP-ATPIII) and the International Diabetes Federation (IDF) and analyzed the contribution of social factors in an adult urban population in the Southeastern region of Brazil. The sample plan was based on multistage probability sampling according to family head income and educational level. A random sample of 1116 subjects aged 30 to 79 years was studied. Participants answered a questionnaire about socio-demographic variables and medical history. Fasting capillary glucose (FCG), total cholesterol, high-density lipoprotein cholesterol (HDL-C), and triglycerides were determined... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Metabolic syndrome; Prevalence; Brazil; Diabetes. |
Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2011000700016 |
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Fregoneze,J.B.; Luz,C.P.; Castro,L.; Oliveira,P.; Lima,A.K.S.; Souza,F.; Maldonado,I.; Macêdo,D.F.; Ferreira,M.G.; Bandeira,I.P.V.; Rocha Jr.,M.A.; Carvalho,F.L.Q.; De-Castro-e-Silva,E.. |
We have demonstrated that central administration of zinc in minute amounts induces a significant antidipsogenic action in dehydrated rats as well as in rats under central cholinergic and angiotensinergic stimulation. Here we show that acute third ventricle injections of zinc also block water intake induced by central ß-adrenergic stimulation in Wistar rats (190-250 g). Central inhibition of opioid pathways by naloxone reverses the zinc-induced antidipsogenic effect in dehydrated rats. After 120 min, rats receiving third ventricle injections of isoproterenol (160 nmol/rat) exhibited a significant increase in water intake (5.78 ± 0.54 ml/100 g body weight) compared to saline-treated controls (0.15 ± 0.07 ml/100 g body weight). Pretreatment with zinc (3.0,... |
Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Zinc; Isoproterenol; Opioids; Thirst; Naloxone; Rats. |
Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1999001000007 |
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Carrara,R.C.V.; Orellana,M.D.; Fontes,A.M.; Palma,P.V.B.; Kashima,S.; Mendes,M.R.; Coutinho,M.A.; Voltarelli,J.C.; Covas,D.T.. |
Bone marrow is a heterogeneous cell population which includes hematopoietic and mesenchymal progenitor cells. Dysregulated hematopoiesis occurs in chronic myelogenous leukemia (CML), being caused at least in part by abnormalities in the hematopoietic progenitors. However, the role of mesenchymal stem cells (MSCs) in CML has not been well characterized. The objectives of the present study were to observe the biological characteristics of MSCs from CML patients and to determine if MSCs originate in part from donors in CML patients after bone marrow transplantation (BMT). We analyzed MSCs from 5 untreated patients and from 3 CML patients after sex-mismatched allogeneic BMT. Flow cytometry analysis revealed the typical MSC phenotype and in vitro assays showed... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mesenchymal stem cells; Chimerism; Allogeneic hematopoietic stem cell transplantation; Chronic myeloid leukemia; Bcr-abl gene. |
Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2007000100008 |
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Artico,L.O.; Bianchini,A.; Grubel,K.S.; Monteiro,D.S.; Estima,S.C.; de Oliveira,L.R.; Bonatto,S.L.; Marins,L.F.. |
The South American sea lion, Otaria flavescens, is widely distributed along the Pacific and Atlantic coasts of South America. However, along the Brazilian coast, there are only two nonbreeding sites for the species (Refúgio de Vida Silvestre da Ilha dos Lobos and Refúgio de Vida Silvestre do Molhe Leste da Barra do Rio Grande), both in Southern Brazil. In this region, the species is continuously under the effect of anthropic activities, mainly those related to environmental contamination with organic and inorganic chemicals and fishery interactions. This paper reports, for the first time, the genetic diversity of O. flavescens found along the Southern Brazilian coast. A 287-bp fragment of the mitochondrial DNA control region (D-loop) was analyzed. Seven... |
Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Otaria flavescens; MtDNA; D-loop; Genetic variability; New haplotypes. |
Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2010000900002 |
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Zeng,Y.; Yang,D.D.; Feng,S.; Shen,H.Y.; Wang,Z.; Jiang,S.; Shi,Y.B.; Fu,J.X.. |
We investigated the risk factors for pulmonary hypertension (PH) in patients receiving maintenance peritoneal dialysis (MPD). A group of 180 end-stage renal disease patients (124 men and 56 women; mean age: 56.43±8.36) were enrolled in our study, which was conducted between January 2009 and June 2014. All of the patients received MPD treatment in the Dialysis Center of the Second Affiliated Hospital of Soochow University. Clinical data, laboratory indices, and echocardiographic data from these patients were collected, and follow-ups were scheduled bi-monthly. The incidence and relevant risk factors of PH were analyzed. The differences in measurement data were compared by t-test and... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Maintenance peritoneal dialysis; Pulmonary hypertension; End-stage renal disease; Internal arteriovenous fistula; Hypertensive nephropathy; Ejection fraction. |
Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2016000300703 |
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Godoy,A.E.G.; Mandelli,J.; Oliveira,F.H.; Calegari,S.; Moura,L.B.; Serafini,E.P.. |
The purpose of the present study was to identify the expression of p16INK4 in cervical cancer precursor lesions by immunohistochemistry and to correlate it with lesion grade and presence of human papillomavirus (HPV) infection. Cervical specimens from 144 women seen consecutively at the gynecology outpatient clinic of our institution from December 2003 to May 2005 were analyzed by cytopathology, histopathology, polymerase chain reaction for HPV-DNA, and p16INK4 immunostaining. Histologically normal biopsies, HPV-DNA negative by polymerase chain reaction, were used as control. HPV-DNA prevalence, including the control group, was 68.1% and the prevalence of p16INK4 expression was 55.0%. The percentage of cells stained by p16INK4 ranged from 10 to 100%, both... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: P16INK4; Cervical cancer; Human papillomavirus; Immunohistochemistry. |
Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2008000700006 |
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Santos,D.V.V.; Costa,K.M.; Vaz,M.C.G.; Silva Filho,M. Da. |
The cortical layer 1 contains mainly small interneurons, which have traditionally been classified according to their axonal morphology. The dendritic morphology of these cells, however, has received little attention and remains ill defined. Very little is known about how the dendritic morphology and spatial distribution of these cells may relate to functional neuronal properties. We used biocytin labeling and whole cell patch clamp recordings, associated with digital reconstruction and quantitative morphological analysis, to assess correlations between dendritic morphology, spatial distribution and membrane properties of rat layer 1 neurons. A total of 106 cells were recorded, labeled and subjected to morphological analysis. Based on the quantitative... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biocytin; Patch-clamp; Dendritic morphology; Layer 1; Neuronal variability. |
Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2012001200016 |
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Mendes,L.C.; Ferreira,P.A.; Miotto,N.; Zanaga,L.; Gonçales,E.; Lazarini,M.S.; Gonçales Júnior,F.L.; Stucchi,R.S.B.; Vigani,A.G.. |
Although long regarded as the gold standard for liver fibrosis staging in chronic hepatitis C (CHC), liver biopsy (LB) implies both the risk of an invasive procedure and significant variability. The aim of this study was to evaluate the diagnostic performance for transient elastography (TE) and aspartate aminotransferase to platelet index (APRI) used alone and in combination compared to liver biopsy and to analyze false positive/negative results. Patients with CHC, and no previous clinical diagnosis of cirrhosis were enrolled to undergo liver biopsy, TE and APRI. A total of 182 adult patients with a median age of 55 years and median body mass index of 26.71 kg/m2 were analyzed. On LB, 56% of patients had significant levels... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Liver biopsy; Noninvasive tests; APRI; Transient elastography; Accuracy; False results. |
Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2016000900702 |
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Donadi,E.A.; Voltarelli,J.C.; Paula-Santos,C.M.; Kimachi,T.; Ferraz,A.S.. |
A few family studies have evaluated HLA antigens in Alport's syndrome; however, there are no large population studies. In the present report, we studied 40 unrelated white patients with Alport's syndrome seen at the Unit of Renal Transplantation, Faculty of Medicine of Ribeirão Preto, São Paulo, Brazil. HLA-A, -B, -DR and -DQ antigens were typed using a complement-dependent microlymphocytotoxicity assay. A control white population (N = 403) from the same geographical area was also typed for HLA antigens. Although the frequencies of HLA-A and -B antigens of patients were not statistically different from controls, the frequency of HLA-DR2 antigen observed in patients (65%) was significantly increased in relation to controls (26%; P<0.001). The... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: HLA antigens; Alport's syndrome; MHC; Immunogenetics. |
Ano: 1998 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1998000400010 |
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Rugeles,M.T.; Rincón,B.; Rugeles,C.; Montoya,C.J.; Hernández,M.; Estrada,C.; Olivares,M.M.; Patiño,P.J.. |
Several primary immunodeficiency diseases affecting the interleukin 12/interferon gamma (IFN-gamma) pathway have been identified, most of them characterized by recurrent and protracted infections produced by intracellular microorganisms, particularly by several species of mycobacteria. In the present study we analyzed the expression of IFN-gamma receptor (IFN-gammaR) and signal transducer and activator of transcription 1 (STAT-1) in 4 children with Mycobacterium tuberculosis infection of uncommon clinical presentation. These molecules were evaluated by flow cytometry and Western blotting in B cells transformed with Epstein-Barr virus and mutations were scanned by single-strand conformational polymorphisms and DNA sequencing. The expression of IFN-gammaR1... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mycobacterial disease; IFN-gamma; IFN-gamma receptor; STAT-1; SSCP-PCR. |
Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2004000900010 |
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Bi,Yiming; Fu,Yan; Wang,Shuyan; Chen,Xingxiu; Cai,Xiaoping. |
Malignant melanoma (MM) is one of the malignant tumors with highly metastatic and aggressive biological actions. Schizandrin A (SchA) is a bioactive lignin compound with strong anti-oxidant and anti-aging properties, which is stable at room temperature and is often stored in a cool dry place. Hence, we investigated the effects of SchA on MM cell line A375 and its underlying mechanism. A375 cells were used to construct an in vitro MM cell model. Cell viability, proliferation, apoptosis, and migration were detected by Cell Counting Kit-8, BrdU assay, flow cytometry, and transwell two-chamber assay, respectively. The cell cycle-related protein cyclin D1 and cell apoptotic proteins (Bcl-2, Bax, cleaved-caspase-3, and cleaved-caspase-9) were analyzed by western... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Malignant melanoma; Schizandrin A; H19; PI3K/AKT. |
Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2019001000610 |
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Fonseca,A.S.M.; Szejnfeld,V.L.; Terreri,M.T.; Goldenberg,J.; Ferraz,M.B.; Hilário,M.O.E.. |
The authors performed a study of bone mass in eutrophic Brazilian children and adolescents using dual-energy X-ray absorptiometry (DXA) in order to obtain curves for bone mineral content (BMC) and bone mineral density (BMD) by chronological age and correlate these values with weight and height. Healthy Caucasian children and adolescents, 120 boys and 135 girls, 6 to 14 years of age, residents of São Paulo, Brazil, were selected from the Pediatric Department outpatient clinic of Hospital São Paulo (Universidade Federal de São Paulo). BMC, BMD and the area of the vertebral body of the L2-L4 segment were obtained by DXA. BMC and BMD for the lumbar spine (L2-L4) presented a progressive increase between 6 and 14 years of age in both sexes, with a distribution... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bone mineral density; Lumbar spine densitometry; Children; Adolescents. |
Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2001000300008 |
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Mazzuco,A.; Souza,A.S.; Medeiros,W.M.; Sperandio,P.A.; Alencar,M.C.N.; Arbex,F.F.; Neder,J.A.; Borghi-Silva,A.. |
The oxygen uptake (V˙O2) kinetics during onset of and recovery from exercise have been shown to provide valuable parameters regarding functional capacity of both chronic obstructive pulmonary disease (COPD) and chronic heart failure (CHF) patients. To investigate the influence of comorbidity of COPD in patients with CHF with reduced ejection fraction on recovery from submaximal exercise, 9 CHF-COPD male patients and 10 age-, gender-, and left ventricle ejection fraction (LVEF)-matched CHF patients underwent constant-load exercise tests (CLET) at moderate and high loads. The V˙O2, heart rate (HR), and cardiac output (CO) recovery kinetics were determined for the monoexponential relationship between these variables and time. Within-group analysis showed that... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chronic heart failure; Chronic obstructive pulmonary disease; Oxygen uptake; Heart rate; Recovery kinetics; Exercise test. |
Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2020000300602 |
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Registros recuperados: 4.329 | |
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