scholarly journals Cambios en el perfil electroforético sérico de Lutjanus analis (Cuvier, 1828) en respuesta a la infección aguda por Listonella (sin. Vibrio) anguillarum

2020 ◽  
Vol 2 (3) ◽  
pp. 132
Author(s):  
Mauro Nirchio ◽  
Ana Rita Rossi
Keyword(s):  
Intramuscular Injection ◽  
Saline Solution ◽  
Acute Infection ◽  
Vibrio Anguillarum ◽  
Agarose Gel ◽  
Nacl Solution ◽  
Inflammatory Reactions ◽  
Listonella Anguillarum ◽  
Solution Saline ◽  
Short Time

The results of electrophoresis of the blood serum of Lutjanus analis in agarose gel from two groups of fishes: (a) fish exposed to live Listonella anguillarum diluted in 0.9% NaCl solution (saline) by intramuscular injection and (b) control specimens injected with the saline solution are provided. Differences in the serum protein profiles of the two groups of specimens were observed. The method here employed, seems to be useful in detecting potential markers for monitoring infection or inflammatory reactions in L. analis after acute infection by L. anguillarum and has the advantage to allow easy analysis of several samples in a short time.

Corrosion of polycrystalline ZnSe by alternating high voltage in a saline solution

1991 ◽  
Vol 6 (4) ◽  
pp. 667-669
Author(s):  
Joseph King
Keyword(s):  
Grain Boundary ◽  
High Voltage ◽  
Salt Solution ◽  
Saline Solution ◽  
Prolonged Exposure ◽  
Low Voltage ◽  
Mechanical Damage ◽  
Chemical Vapor ◽  
Nacl Solution ◽  
Chemical Vapor Deposited

Prolonged exposure of chemical vapor deposited, polycrystalline ZnSe to high ac voltages in the presence of a 1 molal NaCl solution induces severe mechanical damage. The damage takes the form of defects which originate at the surface and grow intergranularly into the bulk with a bush-like morphology. Neither exposure to the salt solution in the absence of the high voltage nor low voltage dc electrolytic exposure produces the defects. The damage may be associated with an intergranular hydride phase or grain boundary impurity segregations present or formed during the environmental exposure.

scholarly journals Circulating levels of cyclooxygenase metabolites in experimentalTrypanosoma cruziinfections

2004 ◽  
Vol 13 (4) ◽  
pp. 235-240 ◽  
Author(s):  
Rita L. Cardoni ◽  
María Inés Antúnez
Keyword(s):  
Acute Infection ◽  
Moderate Increase ◽  
Spleen Cells ◽  
Chronic Infections ◽  
Protective Mechanisms ◽  
Inflammatory Reactions ◽  
C3h Mice ◽  
Prostaglandin F ◽  
Inflammatory Infiltrates ◽  
Circulating Levels

TRYPANOSOMA cruziinduces inflammatory reactions in several tissues. The production of prostaglandin F2α, 6-keto-prostaglandin F1αand thromboxane B2, known to regulate the immune response and to participate in inflammatory reactions, was studied in mice experimentally infected withT. cruzi.The generation of nitric oxide (NO), which could be regulated by cyclooxygenase metabolites, was also evaluated. In the acute infection the extension of inflammatory infiltrates in skeletal muscle as well as the circulating levels of cyclooxygenase metabolites and NO were higher in resistant C3H mice than in susceptible BALB/c mice. In addition, the spontaneous release of NO by spleen cells increased earlier in the C3H mouse strain. In the chronic infections, the tissue inflammatory reaction was still prominent in both groups of mice, but a moderate increase of thromboxane B2concentration and in NO released by spleen cells was observed only in C3H mice. This comparative study shows that these mediators could be mainly related to protective mechanisms in the acute phase, but seem not to be involved in its maintenance in the chronicT. cruziinfections.

The oestrogenicity of equol in sheep

1984 ◽  
Vol 103 (3) ◽  
pp. 395-399 ◽  
Author(s):  
R. Kaziro ◽  
J. P. Kennedy ◽  
E. R. Cole ◽  
P. T. Southwell-Keely
Keyword(s):  
Growth Rate ◽  
Plasma Concentration ◽  
Plasma Level ◽  
Dose Rate ◽  
Dehydrogenase Activity ◽  
Intramuscular Injection ◽  
Uterine Weight ◽  
Lower Dose Rate ◽  
Short Time ◽  
Glucose 6 Phosphate Dehydrogenase

ABSTRACT The effects of intramuscular injection of synthetic racemic equol (±3-(4-hydroxyphenyl)-3,4-dihydro2H-1-benzopyran-7-ol) into wethers have been examined with respect to maintenance of plasma level, teat growth rate and the activity of the respiratory enzyme glucose-6-phosphate dehydrogenase. At a dose rate of 1·03 mmol/day a steady rise in 'total' (free plus conjugated) equol in plasma occurred to 1·78μmol/l in 4 days. A dose rate of 2·07 mmol/day produced only a further slight increase in plasma equol. At a lower dose rate of 0·52 mmol/day the plasma concentration reached 0·62 μmol/l in 2 days and this was not exceeded thereafter. At the dose rate of 1·03 mmol/day over 7 days significant increases in teat length and glucose-6-phosphate dehydrogenase activity occurred but no significant changes were observed at the dose rate of 0·52 mmol/day. It appears that threshold levels of intake of equol which maintain a plasma level of about 1·65 μmol/l are needed for oestrogenic effects to become apparent within a relatively short time. Administration of 1·03 mmol/day over 5 days to ovariectomized ewes produced significant increases in uterine weight equivalent to those produced by 92 nmol stilboestrol dipropionate. Thus stilboestrol was apparently 56000 times more potent than racemic equol. J. Endocr. (1984) 103, 395–399

Effect of the sample form on the corrosion behavior of steels for concrete in 3% NaCl medium

2021 ◽  
Vol 109 (2) ◽  
pp. 201
Author(s):  
Laidi Babouri ◽  
Cheikh Mokrani ◽  
Yassine El Mendili
Keyword(s):  
Electron Microscopy ◽  
Linear Polarization ◽  
Saline Solution ◽  
Electrochemical Impedance ◽  
Nacl Solution ◽  
Tafel Polarization ◽  
Eds Analysis ◽  
Corrosion Of Steel ◽  
Surface Morphologies ◽  
Scanning Electron

Corrosion of steel constitutes a major preoccupation in the field of civil engineering and the building sector. In this paper, we investigated the electrochemical behavior of two steel specimens with different forms (latched steel and smooth steel) in a 3 wt.% NaCl solution. For this purpose, we studied the steel samples by linear polarization, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). The surface morphologies of the substrates were examined by scanning electron microscopy coupled with energy diffraction spectroscopy (SEM/EDS). Results of linear polarization, Tafel polarization curves and EIS show that latched steel (LS) is more susceptible to corrosion than smooth steel (SS) in saline solution. Gravimetric and SEM/EDS analysis after 10 days of immersion confirmed the results obtained by electrochemical methods. All of our results are in agreement and demonstrate that the sample form plays a key role in corrosion resistance.

scholarly journals Comparison of Corrosion Resistance in Physiological Saline Solution of Two Austenitic Stainless Steels – 316LV and REX734

2017 ◽  
Vol 11 (2) ◽  
pp. 91-95 ◽  
Author(s):  
Eliza Romańczuk ◽  
Zbigniew Oksiuta
Keyword(s):  
Corrosion Resistance ◽  
Stainless Steels ◽  
Saline Solution ◽  
Austenitic Stainless Steels ◽  
Physiological Saline ◽  
Nacl Solution ◽  
Corrosion Properties ◽  
Physiological Saline Solution ◽  
Superior Corrosion Resistance ◽  
Lower Nickel

AbstractIn this work two austenitic stainless steels, REX734 and 316LV were tested in terms of their microstructure and corrosion properties. The REX734 is a newer generation stainless steel, with modified chemical composition, in comparison to the 316LV grade. Potentiodynamic study of corrosion resistance was conducted in physiological saline solution (0.9% NaCl solution). In spite of the similarities of microstructure, grain size and phase structure in both materials, the corrosion tests revealed that the REX734, with lower nickel and higher nitrogen content, had better corrosion resistance than 316LV. Repassivation potential in the REX734 was almost six times higher than for the 316LV steel. Superior corrosion resistance of the REX734 steel was also confirmed by surface observations of both materials, since bigger and more densely distributed pits were detected in 316LV alloy.

Activity of Amikacin, Gentamicin and Kanamycin against Pseudomonas Aeruginosa

1976 ◽  
Vol 4 (3) ◽  
pp. 165-175 ◽  
Author(s):  
Jose Ximenes ◽  
Orlando Natale Bassoi ◽  
Jairo Perche de Menezes ◽  
Wilson Fry
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Half Life ◽  
Intramuscular Injection ◽  
Saline Solution ◽  
Serum Levels ◽  
Post Dose ◽  
Mueller Hinton ◽  
Single Intramuscular Injection ◽  
Mueller Hinton Broth

The activity of amikacin, gentamicin and kanamycin was tested in vitro against clinical isolates of Pseudomonas aeruginosa. Concentrations of the antibiotics in serum and in saline solution were prepared according to serum levels produced in volunteers 15 minutes, 1, 2, and 6 hours after a single intramuscular injection of 500 mg amikacin, 80 mg gentamicin and 500 mg kanamycin. Following isolation of the Pseudomonas strains in cultures, they were incubated and seeded in Mueller-Hinton broth, then 107 dilutions of the organisms were kept in contact with the prepared antibiotic solutions in serum and in saline solution for three hours, the approximate half-life of the antibiotics in serum. Amikacin was active at concentrations seen six hours post-dose, inhibiting growth in a total of 72·5% of seeded plates. Gentamicin was active for only two hours and inhibited growth in 2·5% of the plates. Kanamycin showed no anti-pseudomonal activity.

Dissolution of Mercury from Amalgam into Saline Solution

1987 ◽  
Vol 66 (1) ◽  
pp. 33-37 ◽  
Author(s):  
T. Okabe ◽  
J. Ferracane ◽  
C. Cooper ◽  
H. Matsumoto ◽  
M. Wagner
Keyword(s):  
Intermetallic Compounds ◽  
Saline Solution ◽  
Nacl Solution ◽  
Mercury Ions

Dissolution of mercury from amalgams and some intermetallic compounds found in the amalgam structure, such as γ1, γ2, and β1, was examined during one week of aging in 0.9% NaCl solution at 37°C. The amount of mercury released from γ1(30.2 μg/cm2) was at least 13 times that released from amalgam (0.5 - 2.2 μg/cm2) and five times that released from β1(5.7 μg/cm2). γ 2 released the least amount of mercury (0.46 μg/cm2). The study revealed that as high as 55% of the mercury ions liberated from the amalgams and the amalgam phases was adsorbed onto the walls of the vials in which the specimens were aged.

Intermediate and Long-Term Radiological Consequences of an Uncontrolled Access of Saline Solution Into the Asse Mine

2011 ◽  
Author(s):  
Veronika Ustohalova ◽  
Christian Ku¨ppers
Keyword(s):  
Saline Solution ◽  
Anthropogenic Activities ◽  
Decay Chain ◽  
Radionuclide Migration ◽  
Chain Migration ◽  
Geological Conditions ◽  
Short And Long Term ◽  
Radionuclide Release ◽  
Short Time

The risk of radioactive contamination in the biosphere surrounding the Asse salt mine has been assessed to determine the possible radioactive exposure to humans if the mine collapses. Geological conditions and anthropogenic activities have made the mine instable and allow salt-saturated ground water to seep in. This uncontrolled brine inflow significantly increases the risk of the mine collapsing. If the mine collapses, the brine will be pressed into groundwater, where the radionuclides can migrate into the biosphere and cause radioactive exposure. The key issue discussed in this paper is estimating the short- and long-term radiation burden for humans under several possible scenarios of radionuclide release. Only a radioecological model able to quantify and estimate processes taking place can generate usable results. This work develops the radioecological model describing both radionuclide migration and the resulting radiological exposure along several exposition pathways. Development of the model took into account the sorption processes, solubility limits and special aspects of decay chain migration. The radiological exposure was estimated under non-equilibrated conditions for the case of short-time expositions. At the end of this paper, the model’s background, the results of the computations and a comparison of several scenarios will be presented.

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