Oftalmol Zh.2009;3:60-63.

http://doi.org/10.31288/oftalmolzh200936063

PHOTODYNAMIC EFFECT OF METHYLENE BLUE ON CULTURE OF ESCHERICHIA COLI IN ITS ACTIVATION BY LASER IRRADIATION

Pasyechnikova N. V., Zborovskaya A. V., Kustrin T. B.

Odessa, Ukraine

The puprose of research was to define influence combined applications of laser radiation and methylene blue (MB) as photosensitizer on pathogenic culture of Escherichia coli in vitro. Daily cultures were grown up in test tubes on oblique agar at 37°C. Concentration of MB was 0,2%, 0,1% and 0,05%. Activation of suspension of cells with methylene blue was by laser radiation from a long wave 630 nm during of 3 or 5 minutes. Research has shown, that growth Escherichia coli was not suppressed significant at use of methylene blue as photosensitizer in a combination with laser 630 nm. After 24 hours the maximal suppression of growth of microogranisms is marked in group without centrifugation with use of 0,05% MB at duration of a laser of 3 minutes. MB not penetration cells wall because it have special building, so we have used some guide, and it will be studied in the next research.

 

References

1.Аль-Асталь Мухаммед Салих. Фотодинамическая терапия неоваскуляризации роговицы с применением метиленового синего и лазерного излучения длины волны 578 нм: Автореф. дис. ... канд. мед. наук: 14.00.08 / Респуб. гос. казенное предпр. «Казахский ордена «Знак почета» научно-исследовательский институт глазных болезней». - Алматы, 2006. - 24 с.

2.Chang T. W., Fiumara N., Weinstein L. Genital herpes: Treatment with methylene blue and light exposure // In-ternational Journal of Dermatology. - 1975. - Vol. 14. -Issue 1. - P. 69-71.

CrossRef  PubMed 

3.Malik Z., Ladan H., Nitzan Y. Photodynamic inactivation of Gram-negative bacteria: problems and possible solutions // Journal of Phototochemestry and Photobiology. -1992. - Vol. 14, № 3. - P. 262-266.

CrossRef  

4.Mellish K. J., Cox R. D., Vernon D. I., Griffiths J., Brown S. B. In vitro photodynamic activity of a series of methylene blue analogues // Journal of Photochemestry and Photobiology. - 2002. - Vol. 75. - Issue 4. - P. 392-297.

CrossRef 

5.Nitzan Y., Gutterman M., Malik Z., Ehrenberg B. Inactivation of gram-negative bacteria by photosensitized porphyrins // Journal of Photochemestry and Photobiology. -1992. - Vol. 55, № 1. - P. 89-96.

CrossRef    PubMed

6.Soukos N. S., Laurie Ann Ximenez-Fyvie, Michael R. Hamblin. Targeted Antimicrobial Photochemotherapy // Antimicrobial Agents and Chemotherapy. - 1998. - Vol. 42, № 10. - P. 2595-2601.

CrossRef  PubMed

7.Usacheva N. M., Teichert M. C., Biel M. A. Comparison of the methylene blue and toluidine blue photobactericidal efficacy against gram-positive and gram-negative micro-organisms // Lasers in Surgery and Medicine. - 2001. - Vol. 29. - Issue 2. - P. 165-173.

CrossRef   PubMed