Srr
Mostrando 25-36 de 55 artigos, teses e dissertações.
-
25. FATIGUE LIFE OF A FERRITIC NODULAR CAST IRON OF DIFFERENT MICROSTRUCTURES. / VIDA EM FADIGA DE UM FERRO FUNDIDO NODULAR FERRÍTICO COM VARIAÇÕES MICROESTRUTURAIS
Esta pesquisa teve como objetivos promover variações microestruturais em um ferro fundido nodular ferrítico tipo ASTM A536 60-40-18, pelo do uso de resfriadores durante a solidificação do material e pela adoção de tratamentos térmicos pós-fundição, bem como avaliar a influência de tais variações microestruturais sobre as propriedades mecânicas
Publicado em: 2003
-
26. Detection of Hepatitis B Virus Antigens in Paraffin-embedded Liver Specimens from the Amazon Region, Brazil
Hepatic viscerotomy of paraffin-preserved old specimens, collected in the period from 1934 to 1967, were analyzed by immunohistochemical assays to detect hepatitis B, hepatitis D, dengue and yellow fever virus antigens. The material belongs to the Yellow Fever Collection, Department of Pathology, Instituto Oswaldo Cruz, Rio de Janeiro, Brazil and the cases w
Memórias do Instituto Oswaldo Cruz. Publicado em: 2002-01
-
27. Salivary cortisol as a tool for physiological studies and diagnostic strategies
Salivary cortisol is an index of plasma free cortisol and is obtained by a noninvasive procedure. We have been using salivary cortisol as a tool for physiological and diagnostic studies, among them the emergence of circadian rhythm in preterm and term infants. The salivary cortisol circadian rhythm in term and premature infants was established between 8 and
Brazilian Journal of Medical and Biological Research. Publicado em: 2000-10
-
28. Characterization of Virulence Factor Regulation by SrrAB, a Two-Component System in Staphylococcus aureus
Workers in our laboratory have previously identified the staphylococcal respiratory response AB (SrrAB), a Staphylococcus aureus two-component system that acts in the global regulation of virulence factors. This system down-regulates production of agr RNAIII, protein A, and toxic shock syndrome toxin 1 (TSST-1), particularly under low-oxygen conditions. In t
American Society for Microbiology.
-
29. Identification of a Novel Two-Component Regulatory System That Acts in Global Regulation of Virulence Factors of Staphylococcus aureus
We have previously demonstrated that the presence of oxygen is necessary for the production of toxic shock syndrome toxin 1 (TSST-1) by Staphylococcus aureus in vitro. To investigate the mechanism by which oxygen might regulate toxin production, we identified homologs in S. aureus of the Bacillus subtilis resDE genes. The two-component regulatory system enco
American Society for Microbiology.
-
30. The Arabidopsis SRR1 gene mediates phyB signaling and is required for normal circadian clock function
Plants possess several photoreceptors to sense the light environment. In Arabidopsis cryptochromes and phytochromes play roles in photomorphogenesis and in the light input pathways that synchronize the circadian clock with the external world. We have identified SRR1 (sensitivity to red light reduced), a gene that plays an important role in phytochrome B (phy
Cold Spring Harbor Laboratory Press.
-
31. Identification of spike protein residues of murine coronavirus responsible for receptor-binding activity by use of soluble receptor-resistant mutants.
We previously demonstrated by site-directed mutagenesis analysis that the amino acid residues at positions 62 and 214 to 216 in the N-terminal region of mouse hepatitis virus (MHV) spike (S) protein are important for receptor-binding activity (H. Suzuki and F. Taguchi, J. Virol. 70:2632-2636, 1996). To further identify the residues responsible for the activi
-
32. Serine racemase is associated with schizophrenia susceptibility in humans and in a mouse model
Abnormal N-methyl-d-aspartate receptor (NMDAR) function has been implicated in the pathophysiology of schizophrenia. d-serine is an important NMDAR modulator, and to elucidate the role of the d-serine synthesis enzyme serine racemase (Srr) in schizophrenia, we identified and characterized mice with an ENU-induced mutation that results in a complete loss of S
Oxford University Press.
-
33. The Sox-2 Regulatory Regions Display Their Activities in Two Distinct Types of Multipotent Stem Cells
The Sox-2 gene is expressed in embryonic stem (ES) cells and neural stem cells. Two transcription enhancer regions, Sox-2 regulatory region 1 (SRR1) and SRR2, were described previously based on their activities in ES cells. Here, we demonstrate that these regulatory regions also exert their activities in neural stem cells. Moreover, our data reveal that, as
American Society for Microbiology.
-
34. Identification of Sox-2 regulatory region which is under the control of Oct-3/4–Sox-2 complex
Sox-2 is a transcriptional cofactor expressed in embryonic stem (ES) cells as well as in neuronal cells. It has been demonstrated that Sox-2 plays an important role in supporting gene expression in ES cells, especially by forming a complex with embryonic Octamer factor, Oct-3/4. Here, we have analyzed the regulatory regions of the Sox-2 gene and identified t
Oxford University Press.
-
35. Receptor-Induced Conformational Changes of Murine Coronavirus Spike Protein
Although murine coronavirus mouse hepatitis virus (MHV) enters cells by virus-cell membrane fusion triggered by its spike (S) protein, it is not well known how the S protein participates in fusion events. We reported that the soluble form of MHV receptor (soMHVR) transformed a nonfusogenic S protein into a fusogenic one (F. Taguchi and S. Matsuyama, J. Virol
American Society for Microbiology.
-
36. Human plasma vitamin E kinetics demonstrate rapid recycling of plasma RRR-alpha-tocopherol.
A kinetic model of vitamin E transport in humans is described using data from our studies with deuterium-labeled stereoisomers of alpha-tocopherol (RRR- and SRR-). In normal subjects, both alpha-tocopherols are present at similar concentrations in chylomicrons, but by 24 hr, RRR-alpha-tocopherol is at higher plasma concentrations because RRR-alpha-tocopherol