Hautuntersuchungen im Gefilterten Quarzlicht

Bommer, S

doi:10.1007/bf01726474

Cited by 37 publications

(23 citation statements)

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“…9 The foci of light correspond to porphyrin produced by P acnes, which resides within the hair follicle unit. Using photographic methods, the fluorescence can be demonstrated on film.…”

Section: Commentmentioning

confidence: 99%

Propionibacterium acnes and the Pathogenesis of Progressive Macular Hypomelanosis

Westerhof¹,

Relyveld²,

Kingswijk³

et al. 2004

Arch Dermatol

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“…9 The foci of light correspond to porphyrin produced by P acnes, which resides within the hair follicle unit. Using photographic methods, the fluorescence can be demonstrated on film.…”

Section: Commentmentioning

confidence: 99%

Propionibacterium acnes and the Pathogenesis of Progressive Macular Hypomelanosis

Westerhof¹,

Relyveld²,

Kingswijk³

et al. 2004

Arch Dermatol

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“…We conclude that red fl uorescence is well suited to detection of the bacteria which cause dentin caries but it is not suitable as an indicator of the presence and activity of the streptococci involved in initial caries. Copyright © 2006 S. Karger AG, Basel The phenomenon of red fl uorescence in carious dental hard tissue and in dental plaque and calculus was fi rst reported in the 1920s [Bommer, 1927; van den Bergh, 1928;Benedict, 1928]. Since then, spectrographic studies have shown that carious dentin fl uoresces more intensely in the red portion of the visible spectrum than sound dentin [Buchalla et al, 2004;Alfano and Yao, 1981].…”

mentioning

confidence: 99%

The Ability of Selected Oral Microorganisms to Emit Red Fluorescence

et al. 2005

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Some novel caries detection and excavation devices rely on the ability of bacteria to produce red fluorescing compounds. The aim of this study was to examine the ability of selected oral microorganisms to emit red fluorescence. Streptococcus mutans, S. oralis, S. salivarius, S. sobrinus, Lactobacillus fermentans, L. casei, L. rhamnosus, Actinomyces naeslundi, A. israelii, Prevotella intermedia, and Fusobacterium nucleatum were inoculated onto Columbia agar with haemin and vitamin K and incubated anaerobically for up to 7 days in the dark. The resulting bacterial colonies were excited using filtered xenon light (405 ± 20 nm) and digitally photographed through a 530-nm high-pass filter. The red and green portions of the colony fluorescence were analyzed using a computer program and the red/green ratio was calculated. All colonies emitted both red and green fluorescence. The green outweighed the red portion for the following species (in descending order) S. oralis, S. salivarius, S. mutans, F. nucleatum and S. sobrinus. The red portion was higher for the following species (in descending order) P. intermedia, A. naeslundi, A. israelii, L. fermentans, L. rhamnosus and L. casei. With all the bacteria examined, one color portion generally outweighed the other, giving the visual impression of either red or green fluorescence. We conclude that red fluorescence is well suited to detection of the bacteria which cause dentin caries but it is not suitable as an indicator of the presence and activity of the streptococci involved in initial caries.

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“…Red fluorescence from dental plaque and calculus was first observed in the late 1920s [1] and in 1986 it was shown that anaerobic oral bacteria could emit red fluorescence [2]. This red fluorescence emission has been suggested to originate from porphyrins that are synthesized by and present in various microorganisms [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

On the red fluorescence emission of <i>Aggregatibacter actinomycetemcomitans</i>

Bjurshammar¹,

Johannsen²,

Buhlin³

et al. 2012

OJST

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A number of studies have indicated that bacteria able to emit red fluorescence can be detected by light induced fluorescence technique and killed by photodynamic therapy. The objective of this study was to investigate the red fluorescence properties of the single gram negative capnophilic bacterium Aggregatibacter actinomycetemcomitans, ATCC 33384, and to investigate if these properties were related to the growth, morphology and size of the bacterial colonies. Time trend assessment was made with red fluorescence by QLF (Quantitative Light-induced Fluorescence), as well as with white light digital imaging. It was demonstrated that A. actinomycetemcomitans, a single capnophilic bacterium, is able to produce red fluorescence on its own, i.e. in the absence of other bacteria strains, and that blood agar is necessary to obtain red fluorescence from this bacterium on culture plates. This bacterium formed smooth circular, bell/dome like colonies increasing in size with time exhibiting various red fluorescence behaviors. A large variation in the fluorescence behavior points out an inhomogeneous distribution of red fluorescence within and between the colonies, i.e. the size of the investigated colonies did not correlate with the red fluorescence area, suggesting a dependence on the colony morphology such as the colony growth in height. To our knowledge this is the first study that have shown that A. actinomycetemcomitans on its own is able to produce fluorescence in the red spectral region.

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Hautuntersuchungen im Gefilterten Quarzlicht

Cited by 37 publications

References 0 publications

Propionibacterium acnes and the Pathogenesis of Progressive Macular Hypomelanosis

Propionibacterium acnes and the Pathogenesis of Progressive Macular Hypomelanosis

The Ability of Selected Oral Microorganisms to Emit Red Fluorescence

On the red fluorescence emission of <i>Aggregatibacter actinomycetemcomitans</i>

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Hautuntersuchungen im Gefilterten Quarzlicht

Cited by 37 publications

References 0 publications

Propionibacterium acnes and the Pathogenesis of Progressive Macular Hypomelanosis

Propionibacterium acnes and the Pathogenesis of Progressive Macular Hypomelanosis

The Ability of Selected Oral Microorganisms to Emit Red Fluorescence

On the red fluorescence emission of &lt;i&gt;Aggregatibacter actinomycetemcomitans&lt;/i&gt;

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On the red fluorescence emission of <i>Aggregatibacter actinomycetemcomitans</i>