Action of low-intensity laser radiation on Escherichia coli

Journal Article · Tue Jan 01 04:00:00 EST 1991 · Critical Reviews in Biomedical Engineering; (United States)

OSTI ID:5457079

Tiphlova, O; Karu, T ^[1]

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1. Laser Technology Center of U.S.S.R. Academy of Sciences, Moscow (USSR)

The review deals with quantitative laws of monochromatic visible light action on the cellular level, as well as with the primary photoacceptors and possible light signal transduction chains in bacterial cell Escherichia coli WP2 trp-. Experiments described in this paper are a part of experimental work performed for explaining the molecular mechanism of low-intensity laser therapy. The existence of certain parameters of light (dose, intensity, pulse repetition rate, monochromaticity within the absorbtion bandwidth of biomolecules) for stimulation of E. coli WP2 metabolism has been established. The necessity for a certain physiological state of bacteria cells sensitive to irradiation has been shown. The sensitivity of bacteria to irradiation with monochromatic visible light has been proposed to be a delta pH-dependent genetic process. 115 refs.

• OSTI ID: 5457079
• Journal Information: Critical Reviews in Biomedical Engineering; (United States), Journal Name: Critical Reviews in Biomedical Engineering; (United States) Vol. 18:6; ISSN CRBED; ISSN 0278-940X
• Country of Publication: United States
• Language: English

Related Subjects

560400* -- Other Environmental Pollutant Effects
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
BACTERIA
BIOLOGICAL EFFECTS
DOCUMENT TYPES
ELECTROMAGNETIC RADIATION
ESCHERICHIA COLI
LASER RADIATION
LASERS
METABOLISM
MICROORGANISMS
RADIATIONS
REVIEWS
SENSITIVITY