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Titolo:
PHOTOTOXICITY OF ARGON-LASER IRRADIATION ON BIOFILMS OF PORPHYROMONASAND PREVOTELLA SPECIES
Autore:
HENRY CA; DYER B; WAGNER M; JUDY M; MATTHEWS JL;
Indirizzi:
BAYLOR COLL DENT,DEPT BIOMED SCI,3302 GASTON AVE DALLAS TX 75246 BAYLOR RES INST DALLAS TX 75246
Titolo Testata:
Journal of photochemistry and photobiology.B, Biology
fascicolo: 2-3, volume: 34, anno: 1996,
pagine: 123 - 128
SICI:
1011-1344(1996)34:2-3<123:POAIOB>2.0.ZU;2-#
Fonte:
ISI
Lingua:
ENG
Soggetto:
BLACK-PIGMENTED BACTEROIDES; PROPIONIBACTERIUM-ACNES; OXYGEN TOLERANCE; BACTERIA; LIGHT; GINGIVALIS; PHOTOSENSITIZATION; ASACCHAROLYTICUS; MELANINOGENICUS; COLONIZATION;
Keywords:
ARGON LASER; BIOFILMS; PREVOTELLA; PORPHYROMONAS; INFECTIONS; HEMIN; HEMOGLOBIN; THERAPEUTICS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
31
Recensione:
Indirizzi per estratti:
Citazione:
C.A. Henry et al., "PHOTOTOXICITY OF ARGON-LASER IRRADIATION ON BIOFILMS OF PORPHYROMONASAND PREVOTELLA SPECIES", Journal of photochemistry and photobiology.B, Biology, 34(2-3), 1996, pp. 123-128

Abstract

Species of Prevotella (Pr.) and Porphyromonas (Po.) and other microorganisms were cultivated as biofilms on agar medium and examined for their susceptibility to argon laser irradiation (continuous mode; wavelengths, 488-514 nm; fluences, 20-200 J cm(-2));. Fluences of 35 to 80 Jcm(-2) inhibited biofilm growth in Po. endodontalis, Po. gingivalis, Pr. denticola, Pr. intermedia, Pr. melaninogenica and Pr. nigrescens. A fluence of 70 J cm(-2) did not affect biofilm growth in species of Bacillus, Candida, Enterobacter, Proteus, Pseudomonas, Staphylococcus and Streptococcus, The phototoxic effects of argon laser irradiation against Prevotella and Porphyromonas species were: (1) caused by the radiation alone; (2) modified by biofilm age; (3) dependent on the presence of atmospheric oxygen; (4) influenced by medium supplements of hemin, hemoglobin and blood; (5) greater when compared with other microbial species; (6) demonstrated without augmentation with an exogenous photosensitizer; and (7) apparently unrelated to the protoporphyrin content of the cells. Overall, these in vitro findings suggest that low doses of argon laser radiation may be effective in the treatment and/or prevention of clinical infections caused by biofilm-associated species of Prevotella or Porphyromonas.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 27/11/20 alle ore 15:18:52