The antimicrobial effect of narrow-band UVB (313 nm) and UVA1 (345-440 nm) radiation in vitro
| Autor: | J. W. Fluhr, M. Gloor |
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| Rok vydání: | 1997 |
| Předmět: |
Adult
Male Micrococcaceae Adolescent Ultraviolet Rays Stereochemistry Propionibacterium Immunology Dermatology Radiation Antimicrobial effect Acne Vulgaris Humans Immunology and Allergy Radiology Nuclear Medicine and imaging Irradiation Propionibacteriaceae biology General Medicine biology.organism_classification In vitro Female Bacteria Nuclear chemistry |
| Zdroj: | Photodermatology, Photoimmunology & Photomedicine. 13:197-201 |
| ISSN: | 0905-4383 |
| DOI: | 10.1111/j.1600-0781.1997.tb00230.x |
| Popis: | Two new UV lamps were investigated with respect to their antibacterial effectiveness in vitro. Propioni (n = 20 strains) and Micrococcaceae (n = 16 strains) bacteria extracted from acne patients were applied to RCM and sheep blood agar plates and irradiated with a narrow-band UVB lamp (TL 100W/10R) at a wavelength of 313 nm and a UVA1 lamp (TL 01) at a wavelength of 345-440 nm. The precisely defined energy levels were, in the case of narrow-band UVB, 0.00, 0.30, 0.50, 1.00, 2.00 and 3.00 J/cm2 and, in the case of UVA1, 0.00, 2.50, 5.00, 7.50, 10.00 and 20.00 J/cm2. UVA1 inhibited neither the growth of Propioni nor Micrococcaceae bacteria. In contrast, the growth of Micrococcaceae was inhibited already at a dosage of 0.30 J/cm2 of narrow-band UVB (P < 0.05), highly significant from 0.50 J/cm2 (P < 0.01) and to a maximum of 2.2 powers of 10 at 3.00 J/cm2 compared with non-radiated control plates. Propioni bacteria were significantly inhibited at the minimum dosage of 0.30 J/cm2 of narrow-band UVB (P < 0.01) and to a maximum of 2.8 powers of 10 at 3.00 J/cm2. |
| Databáze: | OpenAIRE |
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