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Titolo:
MESOSUBSTITUTED CATIONIC PORPHYRINS AS EFFICIENT PHOTOSENSITIZERS OF GRAM-POSITIVE AND GRAM-NEGATIVE BACTERIA
Autore:
MERCHAT M; BERTOLINI G; GIACOMINI P; VILLANUEVA A; JORI G;
Indirizzi:
LOREAL,LAB RECH PARIS FRANCE UNIV PADUA,IST MICROBIOL PADUA ITALY UNIV AUTONOMA MADRID,DEPT BIOL MADRID SPAIN UNIV PADUA,DIPARTIMENTO BIOL PADUA ITALY
Titolo Testata:
Journal of photochemistry and photobiology.B, Biology
fascicolo: 3, volume: 32, anno: 1996,
pagine: 153 - 157
SICI:
1011-1344(1996)32:3<153:MCPAEP>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Keywords:
MESOSUBSTITUTED CATIONIC PORPHYRIN; PHOTOSENSITIZER; GRAM-POSITIVE BACTERIA; GRAM-NEGATIVE BACTERIA;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
10
Recensione:
Indirizzi per estratti:
Citazione:
M. Merchat et al., "MESOSUBSTITUTED CATIONIC PORPHYRINS AS EFFICIENT PHOTOSENSITIZERS OF GRAM-POSITIVE AND GRAM-NEGATIVE BACTERIA", Journal of photochemistry and photobiology.B, Biology, 32(3), 1996, pp. 153-157

Abstract

Previous studies on the photosensitization of bacterial cells with different neutral or negatively charged porphyrins and phthalocyanines have demonstrated that, although Gram-positive bacteria are efficientlyphotoinactivated, Gram-negative bacteria become photosensitive only after modification of the permeability of their outer membrane. The results described in this paper show that two meso-substituted cationic porphyrins, namely tetra(4N-methyl-pyridyl) porphine tetraiodide and tetra(4N,N,N-trimethyl-anilinium)porphin efficiently photosensitize the inactivation of Gram-negative bacteria, such as Vibrio anguillarum andEscherichia coli. A negatively charged meso-substituted porphyrin, tetra(4-sulphonatophenyl) porphine, has no appreciable photosensitizing activity towards Gram-negative bacteria, although all three porphyrinsexhibit a similar subcellular distribution pattern, being mainly localized in the protoplasts or spheroplasts. Moreover, the three porphyrins show similar efficiency in the photoinactivation of the Gram-positive bacterium Entorecoccus seriolicida.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 15/07/20 alle ore 13:27:48