PHOTODYNAMIC INACTIVATION EFFECT OF METHYLENE BLUE AND TOLUIDINE BLUE O ON ATCC ESCHERICHIA COLI AND CLINICAL ISOLATE OF MULTIDRUG-RESISTANT ESCHERICHIA COLI

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KASHEF NASIM; RAVAEI SHARIF ABADI GITA; ESMAEELI DJAVID GHOLAMREZA

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Journal: Lasers in Medicine Year:2011 | Volume:7 | Issue:4 (38) Page(s): 6-10

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Title

PHOTODYNAMIC INACTIVATION EFFECT OF METHYLENE BLUE AND TOLUIDINE BLUE O ON ATCC ESCHERICHIA COLI AND CLINICAL ISOLATE OF MULTIDRUG-RESISTANT ESCHERICHIA COLI

Author(s)

KASHEF NASIM | RAVAEI SHARIF ABADI GITA | ESMAEELI DJAVID GHOLAMREZA | Issue Writer Certificate

Keywords

PHOTODYNAMIC INACTIVATIONQ3

MULTIDRUG-RESISTANT BACTERIAQ3

METHYLENE BLUEQ3

TOLUIDINE BLUE OQ3

Abstract

Background & objective: PHOTODYNAMIC INACTIVATION (PDI) has been investigated to cope with the increasing incidence of multidrug-resistant (MDR) pathogens. PDI employs nontoxic photosensitizers (PSs), which localize in the microbial cells and are activated by a specific wavelength of visible light. The main purpose of this study was to explore the PDI effect of METHYLENE BLUE (MB) and TOLUIDINE BLUE O (TBO) on Escherichia coli (ATCC 25922) and clinical isolate of multidrug-resistant Escherichia coli.Methods: Effect of PSs concentration (12.5, 25, 50 µg/ml) and laser irradiation time (10, 20, 30 min) on lethal photosensitization was investigated.Results: METHYLENE BLUE (50 µg/ml) photosensitization using red laser light (163.8 J/cm2) was able to achieve reductions of 53.1% and 37.6% in the viable counts of Escherichia coli (ATCC 25922) and clinical isolate of MDR Escherichia coli (using starting concentrations of 104–105 CFU ml-1). TBO at 50 µg/ml, 46.8 Jcm-2, exhibited 0.7 log killing for MDR E. coli and 1.7 log killing for E. coli (ATCC 25922).Conclusion: In our study, the selected MDR isolate was more resistant to TBO-PDI-mediated killing than its ATCC reference strain. Therefore, the PDI efficacy of TBO may be affected by the antibiotic resistance mechanism that presented in MDR isolate.

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APA: Copy

KASHEF, NASIM, RAVAEI SHARIF ABADI, GITA, & ESMAEELI DJAVID, GHOLAMREZA. (2011). PHOTODYNAMIC INACTIVATION EFFECT OF METHYLENE BLUE AND TOLUIDINE BLUE O ON ATCC ESCHERICHIA COLI AND CLINICAL ISOLATE OF MULTIDRUG-RESISTANT ESCHERICHIA COLI. LASER IN MEDICINE, 7(4 (38)), 6-10. SID. https://sid.ir/paper/113460/en

Vancouver: Copy

KASHEF NASIM, RAVAEI SHARIF ABADI GITA, ESMAEELI DJAVID GHOLAMREZA. PHOTODYNAMIC INACTIVATION EFFECT OF METHYLENE BLUE AND TOLUIDINE BLUE O ON ATCC ESCHERICHIA COLI AND CLINICAL ISOLATE OF MULTIDRUG-RESISTANT ESCHERICHIA COLI. LASER IN MEDICINE[Internet]. 2011;7(4 (38)):6-10. Available from: https://sid.ir/paper/113460/en

IEEE: Copy

NASIM KASHEF, GITA RAVAEI SHARIF ABADI, and GHOLAMREZA ESMAEELI DJAVID, “PHOTODYNAMIC INACTIVATION EFFECT OF METHYLENE BLUE AND TOLUIDINE BLUE O ON ATCC ESCHERICHIA COLI AND CLINICAL ISOLATE OF MULTIDRUG-RESISTANT ESCHERICHIA COLI,” LASER IN MEDICINE, vol. 7, no. 4 (38), pp. 6–10, 2011, [Online]. Available: https://sid.ir/paper/113460/en

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