X-Ray Diffraction and Infrared Study of the 'Sulphur Granules' of Actinomyces bovis

Frazier, Paul D.; Fowler, Bruce O.

doi:10.1099/00221287-46-3-445

Cited by 11 publications

(2 citation statements)

References 11 publications

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“…in vivo consist of mycelial hyphae cemented with a polysaccharide-protein complex. The mineral portion of granules includes apatite and calcium phosphates (155,404). Central regions of Streptomyces scabies colonies appear to be covered with a "blanket" of some extracellular material (126).…”

Section: Amycelial Structuresmentioning

confidence: 99%

Comparative aspects of development and differentiation in actinomycetes.

Kalakoutskii¹,

Agre²

1976

Bacteriological Reviews

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Section: Amycelial Structuresmentioning

confidence: 99%

Comparative aspects of development and differentiation in actinomycetes.

Kalakoutskii¹,

Agre²

1976

Bacteriological Reviews

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“…Morphologically, the evidence indicates that ABs originate in extracellular deposits of material forming concentric layers and radial spikes, which lie around the yeasts in granulomas. Subsequently, it undergoes a process of crystallization by the incorporation of calcium salts and apatite that renders the AB visible [15,16].…”

Section: Introductionmentioning

confidence: 99%

Asteroid body in sporotrichosis. Yeast viability and biological significance within the host immune response

et al. 2008

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The asteroid body in Sporotrichosis (AB) is a characteristic structure that allows diagnosis in lymphangitic presentations and whose generation and composition is not fully understood. Our study focused on the biological relationship between the yeast and host elements present in the AB. Indirect immunofluorescence showed that on ABs obtained from naturally infected individuals there were antigenically related IgG and IgM molecules in the spikes of the radiated crowns. However, there were differences in the pattern of distribution for each immunoglobulin isotypes. The yeast cells located at the center of the ABs were viable, as shown by the generation of germ tubes and conidial formation after 36-48 hours of incubation at 22 degrees C. The central yeast could divide and proliferate even in the ABs that had been pre-treated with specific anti-Sporothrix schenckii serum and fresh complement. The data suggests that AB in sporotrichosis might be a resistance structure which uses the host immune molecules to the advantage of the yeast.

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Actinomyces

Schaal¹,

Yassin²

2015

Bergey's Manual of Systematics of Archaea and Bacteria

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Ac.ti.no.my'ces. Gr. fem. n. aktis, aktinos ray; Gr. masc. n. mukês fungus; N.L. masc. n. Actinomyces ray fungus referring to the radial arrangement of filaments in Actinomyces bovis sulfur granules. Actinobacteria / Actinobacteria / Actinomycetales / Actinomycetaceae / Actinomyces Straight or slightly curved rods , 0.2–1.0 µm in diameter, which vary considerably in shape and size, and slender filaments , 1 µm or less in width and 10–50 µm or more in length, with true branching. Short rods (0.5–5.0 µm in length) with or without clubbed ends are frequently seen and may occur singly, in pairs with diphtheroidal arrangements (Y, V, T forms and palisades), in short chains or in small clusters. Longer (5.0–10.0 µm in length) branched rods are also common. Several members of the genus appear chiefly or exclusively as coccobacillary or even coccoid elements. Filaments which may predominate in certain species are either straight or wavy , show varying degrees of branching and may have swollen, clubbed, or clavate ends. Gram‐stain‐positive , but irregular staining giving rise to a beaded or barred appearance frequently occurs, and two species may be Gram‐stain‐variable. Non‐acid‐fast, nonmotile, and non‐endospore‐forming. Conidia are not produced. DNA G+C content (mol%) : 55–71 ( T m , HPLC). Type species : Actinomyces bovis Harz 1877, 133 AL .

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X-Ray Diffraction and Infrared Study of the 'Sulphur Granules' of Actinomyces bovis

Cited by 11 publications

References 11 publications

Comparative aspects of development and differentiation in actinomycetes.

Comparative aspects of development and differentiation in actinomycetes.

Asteroid body in sporotrichosis. Yeast viability and biological significance within the host immune response

Actinomyces

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