Photoinactivation of Legionella Rubrilucens by Visible Light

  title={Photoinactivation of Legionella Rubrilucens by Visible Light},
  author={Julian Schmid and Katharina Hoenes and Monika Rath and Petra Vatter and Barbara Spellerberg and Martin Hessling},
  journal={European Journal of Microbiology \& Immunology},
  pages={146 - 149}
In this study, the photoinactivation of Legionella by visible light is investigated. The success of this approach would offer new prospects for technical water disinfection and maybe even for therapeutic measures in cases of Legionella infections. Therefore, Legionella rubrilucens was dispensed on buffered charcoal yeast extract medium agar plates and illuminated with different doses of violet light generated by 405 nm light-emitting diodes (LEDs). A strong photoinactivation effect was observed… 

Figures and Tables from this paper

Antimicrobial Effect of Visible Light—Photoinactivation of Legionella rubrilucens by Irradiation at 450, 470, and 620 nm

There is reason to believe that L. rubrilucens inactivation behavior is similar to that of pathogenic legionella species, and this photoinactivation might lead to new future concepts for legionella reduction and prevention in technical applications or even on or inside the human body.

Photoinactivation Sensitivity of Staphylococcus carnosus to Visible‐light Irradiation as a Function of Wavelength

This study investigates the photoinactivation sensitivity of Staphylococcus carnosus to selected wavelengths between 390 and 500 nm in 10‐ to 25‐nm intervals and points to flavins as responsible photosensitizers, which furthermore seem to be involved at violet wavelengths.

New Legionella Control Options by UV and Violet LEDs for Hospitals and Care Facilities

Legionella infections caused by contaminated water are a widespread problem worldwide. Discharge lamps like mercury vapor lamps are widely known for the disinfection properties of their radiation,

Visible Light as an Antimicrobial Strategy for Inactivation of Pseudomonas fluorescens and Staphylococcus epidermidis Biofilms

This is the first research to test five different wavelengths (each with three intensities in the visible spectrum against Gram-positive and Gram-negative biofilms, providing a detailed study of the potential of visible light againstBiofilms of a different Gram-nature.

Antimicrobial blue light inactivation of pathogenic microbes: State of the art.

  • Yucheng WangYing Wang T. Dai
  • Biology
    Drug resistance updates : reviews and commentaries in antimicrobial and anticancer chemotherapy
  • 2017

Tripiridilporfirini u fotodinamičkoj inaktivaciji legionela

Gram-negativna bakterija Legionella pneumophila je sveprisutna u vodenim i vlažnim podrucjima. Zbog njene rezistentnosti na određene skupine protum



Photoinactivation of bacteria by endogenous photosensitizers and exposure to visible light of different wavelengths – a review on existing data

This review compiles the published data on bacterial inactivation caused by visible light and endogenous photosensitizers and evaluates more than 50 published studies containing information on about 40 different bacterial species irradiated within the spectral range from 380 to 780 nm.

Blue light for infectious diseases: Propionibacterium acnes, Helicobacter pylori, and beyond?

Eradication of Propionibacterium acnes by its endogenic porphyrins after illumination with high intensity blue light.

The results of the present study confirm that the investigated strain of P. acnes is capable of producing endogenic porphyrins with no need for any trigger molecules, and a treatment protocol with a series of several illuminations or illumination after application of ALA may be suitable for curing acne.

In vitro bactericidal effects of 405-nm and 470-nm blue light.

In vitro results indicate that, in vitro, 405- and 470-nm blue light produce dose dependent bactericidal effects on Pseudomonas aeruginosa and Staphylococcus aureus but not Propionibacterium acnes.

The role of oxygen in the visible-light inactivation of Staphylococcus aureus.

High-intensity narrow-spectrum light inactivation and wavelength sensitivity of Staphylococcus aureus.

It was found that inactivation of S. aureus occurs upon exposure to blue light of wavelengths between 400 and 420 nm, with maximum inactivation occurring at 405+/-5 nm, which emphasises the potential of exploiting these non-UV wavelengths for disinfection applications.

Classification of the Legionnaires' disease bacterium: Legionella pneumophila, genus novum, species nova, of the family Legionellaceae, familia nova.

DNA comparisons showed that all strains of the Legionnaires' disease bacterium were members of the same species, and it is proposed that the LD bacterium be named Legionella pneumophila species nova, the type species of Legionella, genus novum.

Isolation of Legionella rubrilucens from a pneumonia patient co-infected with Legionella pneumophila.

It is reported that Legionella rubrilucens strains were found in both a patient's sputum and the water of a hot spring in which the patient bathed, and DNA analysis by PFGE showed that they were indistinguishable.