<i>Rhodococcus equi</i> infection of cats

Fairley,

doi:10.1046/j.1365-3164.1999.00114.x

Cited by 36 publications

(54 citation statements)

References 5 publications

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“…CasaXPS software was used to process the XPS data. 25 Transmission corrected relative sensitivity factor (RSF) values from the Kratos library were used for elemental quantification.…”

Section: Methodsmentioning

confidence: 99%

Heterogeneous Atmospheric Chemistry of Lead Oxide Particles with Nitrogen Dioxide Increases Lead Solubility: Environmental and Health Implications

Baltrušaitis

Chen

Rubasinghege

et al. 2012

Environ. Sci. Technol.

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Heterogeneous chemistry of nitrogen dioxide with lead-containing particles is investigated to better understand lead metal mobilization in the environment. In particular, PbO particles, a model lead-containing compound due to its wide spread presence as a component of lead paint and as naturally occurring minerals, massicot and litharge, are exposed to nitrogen dioxide at different relative humidity. X-ray photoelectron spectroscopy (XPS) shows that upon exposure to nitrogen dioxide the surface of PbO particles react to form adsorbed nitrates and lead nitrate thin films with the extent of formation of nitrate relative humidity dependent. Surface adsorbed nitrate increases the amount of dissolved lead. These reacted particles are found to have an increase in the amount of lead that dissolves in aqueous suspensions at circumneutral pH compared to unreacted particles. These results point to the potential importance and impact that heterogeneous chemistry with trace atmospheric gases can have on increasing solubility and therefore the mobilization of heavy metals, such as lead, in the environment. This study also show that surface intermediates, such as adsorbed nitrates, that form can yield higher concentrations of lead in water systems. In the environment, these water systems can include drinking water, ground water, estuaries and lakes.

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“…CasaXPS software was used to process the XPS data. 25 Transmission corrected relative sensitivity factor (RSF) values from the Kratos library were used for elemental quantification.…”

Section: Methodsmentioning

confidence: 99%

Heterogeneous Atmospheric Chemistry of Lead Oxide Particles with Nitrogen Dioxide Increases Lead Solubility: Environmental and Health Implications

Baltrušaitis

Chen

Rubasinghege

et al. 2012

Environ. Sci. Technol.

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“…Therefore, the Pd 3d spectra were fitted by three pairs of Doniach-Sunjic components for Pd 3d and one pair for the plasmon excitation as shown in detail in the right panel of Figure 1. All XPS results presented in this paper were analysed by CasaXPS software [8] and the curvefitting procedure described above was used. …”

Section: Experimental Methodsmentioning

confidence: 99%

In situ XPS study of Pd(111) oxidation at elevated pressure, Part 2: Palladium oxidation in the 10−1mbar range

et al. 2006

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The oxidation of the Pd(111) surface was studied by in situ XPS during heating and cooling in 0.4 mbar O 2 . The in situ XPS data were complemented by ex situ TPD results. A number of oxygen species and oxidation states of palladium were observed in situ and ex situ. At 430 K, the Pd(111) surface was covered by a 2D oxide and by a supersaturated O ads layer. The supersaturated O ads layer transforms into the Pd 5 O 4 phase upon heating and disappears completely at approximately 470 K. Simultaneously, small clusters of PdO, PdO seeds, are formed. Above 655 K, the bulk PdO phase appears and this phase decomposes completely at 815 K. Decomposition of the bulk oxide is followed by oxygen dissolution in the near-surface region and in the bulk. The oxygen species dissolved in the bulk is more favoured at high temperatures because oxygen cannot accumulate in the near-surface region and diffusion shifts the equilibrium towards the bulk species. The saturation of the bulk "reservoir" with oxygen leads to increasing the uptake of the near-surface region species. Surprisingly, the bulk PdO phase does not form during cooling in 0.4 mbar O 2 , but the Pd 5 O 4 phase appears below 745 K. This is proposed to be due to a kinetic limitation of PdO formation because at high temperature the rate of PdO seed formation is compatible with the rate of decomposition.

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“…Macrophages containing phagocytized bacteria also were observed in many of the previous reports of feline R equi infections. [3][4][5]7,8 R equi has the ability to survive and replicate within macrophages through suppression of phagolysosomal fusion, explaining this observation. 18,19 Although mycobacteria also can be observed within macrophages, they typically do not stain with Romanowsky-type stains (such as Wright's stain), but instead appear as long, slender, negative images within macrophages and sometimes free in the background.…”

mentioning

confidence: 95%

Intracellular success: cytologic findings in an ulcerated submandibular mass from a cat

Hylton

Rizzi

Allison

2006

Veterinary Clinical Pathol

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A 1-year-old neutered male domestic shorthair cat had an ulcerated, proliferative lesion in the submandibular area that did not respond to antibiotic therapy. Impression smears from the mass revealed septic pyogranulomatous inflammation, with large numbers of pleomorphic bacteria observed intracellularly within macrophages as well as neutrophils. Bacterial culture was consistent with a diagnosis of Rhodococcus equi, a facultative intracellular coccobacillus capable of replicating within macrophages. The cat's lesion resolved after treatment with rifampin and clarithromycin. R equi should be considered as a differential diagnosis when coccobacilli are recognized within macrophages in cytologic samples.

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Rhodococcus equi infection of cats

Cited by 36 publications

References 5 publications

Heterogeneous Atmospheric Chemistry of Lead Oxide Particles with Nitrogen Dioxide Increases Lead Solubility: Environmental and Health Implications

Heterogeneous Atmospheric Chemistry of Lead Oxide Particles with Nitrogen Dioxide Increases Lead Solubility: Environmental and Health Implications

In situ XPS study of Pd(111) oxidation at elevated pressure, Part 2: Palladium oxidation in the 10−1mbar range

Intracellular success: cytologic findings in an ulcerated submandibular mass from a cat

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