Fluorimetry
Mostrando 1-12 de 38 artigos, teses e dissertações.
-
1. Essential oil of the leaves of Eugenia sulcata preserve myocardial contractility and does not present immunotoxicity
The essential oil of the leaves of Eugenia sulcata, in the Myrtaceae family, has a demonstrated antihypertensive effect, but its effects on heart muscle and its toxicity have not yet been elucidated. Little chemical or biological data are available for E. sulcata, whether emphasizing the beneficial effects or the pharmacological security of this species. Thi
Braz. J. Pharm. Sci.. Publicado em: 30/09/2019
-
2. The chronic blockade of angiotensin I-converting enzyme eliminates the sex differences of serum cytokine levels of spontaneously hypertensive rats
Sex hormones modulate the action of both cytokines and the renin-angiotensin system. However, the effects of angiotensin I-converting enzyme (ACE) on the proinflammatory and anti-inflammatory cytokine levels in male and female spontaneously hypertensive rats (SHR) are unclear. We determined the relationship between ACE activity, cytokine levels and sex diffe
Braz J Med Biol Res. Publicado em: 01/02/2013
-
3. Estudo das dispersões aquosas de nanotubos de carbono utilizando diferentes surfactantes
The dispersion of carbon nanotubes in water for their utilization in nanoscale devices is a challenging task. Comparative studies on interaction and dispersion of multi-wall carbon nanotubes (MWNT) using two different surfactants (sodium dodecyl sulfate, SDS, and polyoxyethylenesorbitanmonooleate, Tween 80) are presented. The interaction between carbon nanot
Quím. Nova. Publicado em: 2013
-
4. Clonagem, expressão e purificação da proteína ligadora de alcano sulfonatos do sistema de transporte ABC de Xanthomonas axonopodis pv.citri. / Cloning, expression and purification of the Xanthomonas axonopodis pv citri ABC transport alkanosulphonate-binding protein.
O genoma de Xanthomonas citri (Xac) possui mais de 20 tipos de transportadores do tipo ABC incluindo o operon ssuABC associado ao transporte de alcano sulfonatos. Deste operon, escolhemos a proteína periplasmática ligadora de alcano sulfonatos SsuA2, para caracterização e análises espectroscópicas e estruturais. A rSsuA2 foi expressa no citoplasma de c
Publicado em: 2008
-
5. Antagonist G-mediated targeting and cytotoxicity of liposomal doxorubicin in NCI-H82 variant small cell lung cancer
The aim of the present study was to characterize the interactions of antagonist G (H-Arg-D-Trp-NmePhe-D-Trp-Leu-Met-NH 2)-targeted sterically stabilized liposomes with the human variant small cell lung cancer (SCLC) H82 cell line and to evaluate the antiproliferative activity of encapsulated doxorubicin against this cell line. Variant SCLC tumors are known t
Brazilian Journal of Medical and Biological Research. Publicado em: 2004-08
-
6. CHLOROPHYLL A DETERMINATION IN MARINE WATER BY FLUORESCENCE / MEDIDAS DA CLOROFILA A EM ÁGUAS MARINHAS POR FLUORESCÊNCIA
Chlorophyll a is a key-compound in the process of light absorption in the photosynthesis. Monitor the chlorophyll a fluorescence to obtain information about the photosynthetic apparatus of energy production is attractive because the chlorophyll a fluorescence could be detected without destruction of the source. Studies performed by the Laboratório de Hidrob
Publicado em: 2001
-
7. Immune response of the cattle tick Boophilus microplus: investigation of reactive oxygen species production by hemocytes. / Resposta imune do carrapato bovino Boophilus microplus: investigação da produção de espécies reativas de oxigênio pelos hemócitos.
The phagocytic activity and the reactive oxygen species (ROS) production during immune response of some hemocytes of the cattle tick Boophilus microplus were evaluated in this study. The ROS production was evaluated by luminol amplified luminescence, phenol red oxidation, dyhydrorhodamine (DHR) fluorescence microscopy and fluorimetry. The luminol-amplified l
Publicado em: 2000
-
8. Propriedades fisico-quimicas e interação com membranas biologicas dos surfatantes não-ionicos da serie Renex (nonilfenol etoxilado)
Concentration-dependent surfactant effects on erythrocite membranes are well-known, in the literature: high concentrations are haemolytic but low concentrations are often protective. These effects will depend on the pattern of surfactant interaction with the membrane, on surfactant-membrane binding and on its consequences, which in turn depend on surfactant
Publicado em: 1996
-
9. Determination of individual bile acids in biological fluids by thin-layer chromatography and fluorimetry
A method is described for the separation and determination of individual bile acids in serum and in intestinal contents, employing thin-layer chromatography and fluorimetry. The mean recovery from intestinal juice was 94% and from serum 82%.
-
10. Local denaturation of collagen fibres during the mechanical rupture of collagenous fibrous tissue.
Human extensor tendons of the hand were pulled to rupture, and the torn ends, when observed in the scanning electron microscope, appeared to be knotted, possibly owing to the denaturation of the collagen. This confirmed by fluorimetry assays of both the ruptured ends and the middle unbroken sections of the same tendons. The use of a proteolytic enzyme, tryps
-
11. An evaluation of the automated assay of urinary oestrogens in pregnant women
An automated assay suitable for estimating urinary oestrogens in pregnant women has been investigated. Fluorimetry was found to have considerable advantages over colorimetry. The fluorimetric assay was simpler, more precise, more sensitive, and eliminated the need for correction for non-specific chromogens; in the assay of oestriol in pregnant women there wa
-
12. Use of Real-Time PCR and Fluorimetry To Detect Lamivudine Resistance-Associated Mutations in Hepatitis B Virus
Very rapid amplification of DNA by PCR in small volumes can be continuously monitored by the detection of the binding of probes with a rapid cycler with built-in fluorometric detection. Primers were designed to amplify approximately 100 bp of the polymerase gene of hepatitis B virus (HBV) spanning codon 550, where mutations associated with resistance to lami
American Society for Microbiology.