Antibacterial Effect of Low-Level Laser (Diode 405 nm) on Antibiotic-Resistant Enterococci Clinical Isolates (In Vitro)

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Khavari Rahimeh; Massudi Reza; KARMOSTAJI AFSANEH; SOLEIMANI NEDA; Ashkeshi Pantea; Rezaei Pandari Mohammad

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Journal: International Journal of Enteric Pathogens Year:2020 | Volume:8 | Issue:4 Page(s): 137-141

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Title

Antibacterial Effect of Low-Level Laser (Diode 405 nm) on Antibiotic-Resistant Enterococci Clinical Isolates (In Vitro)

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Keywords

Enterococci

Drug resistance-bacterial

Nosocomial infections

Bactericidal effect

Diode laser

Abstract

Background: Enterococcus is a part of normal gastrointestinal flora in human body. Nevertheless, antibiotic-resistant Enterococcus (ARE) is considered a key factor in Nosocomial infections which result in a considerable increase in the rate of patient death due to referring of numerous patients to health centers annually, or lead to extended disease convalescence. Objective: This study aimed to evaluate the Bactericidal effect at 405nm diode at a laser power of 30 mW on ARE viability of clinical infections. Materials and Methods: In the present study, 30 isolates underwent antibiotic susceptibility test (AST) in which sensitivity to piperacillin (100 μ g), rifampin (5 μ g), and oxacillin (1 μ g) were measured based on the Clinical and Laboratory Standards Institute (CLSI) guidelines. Afterwards, ten most resistant isolates were selected and irradiated by a 405 nm Diode laser at a power of 30 mW for 180 and 240 seconds. The data were reported statistically as mean ± standard deviation, and the analysis of the data on varied bacteria was performed using ANOVA. The result was evaluated by SPSS software and P value ≤ 0. 05 was interpreted to be significant. Results: Bacterial viability decreased unsteadily to 10 resistant isolates. Moreover, enhancing irradiation time caused a lower viability rate in such a way that the viability of isolate 9 having the lowest viability rate was reduced from 2. 94% in 180 seconds to 0. 58% in 240 seconds. The result was evaluated by SPSS software and P value was determined to be significant, and P≤ 0. 05 was laser irradiation for either 180 s or 240 s. Conclusion: Following the study results, 405 nm Diode laser could be applied as a tool for eliminating clinical ARE, and it was useful for preventing hospital-acquired infections.

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APA: Copy

Khavari, Rahimeh, Massudi, Reza, KARMOSTAJI, AFSANEH, SOLEIMANI, NEDA, Ashkeshi, Pantea, & Rezaei Pandari, Mohammad. (2020). Antibacterial Effect of Low-Level Laser (Diode 405 nm) on Antibiotic-Resistant Enterococci Clinical Isolates (In Vitro). INTERNATIONAL JOURNAL OF ENTERIC PATHOGEN, 8(4), 137-141. SID. https://sid.ir/paper/705596/en

Vancouver: Copy

Khavari Rahimeh, Massudi Reza, KARMOSTAJI AFSANEH, SOLEIMANI NEDA, Ashkeshi Pantea, Rezaei Pandari Mohammad. Antibacterial Effect of Low-Level Laser (Diode 405 nm) on Antibiotic-Resistant Enterococci Clinical Isolates (In Vitro). INTERNATIONAL JOURNAL OF ENTERIC PATHOGEN[Internet]. 2020;8(4):137-141. Available from: https://sid.ir/paper/705596/en

IEEE: Copy

Rahimeh Khavari, Reza Massudi, AFSANEH KARMOSTAJI, NEDA SOLEIMANI, Pantea Ashkeshi, and Mohammad Rezaei Pandari, “Antibacterial Effect of Low-Level Laser (Diode 405 nm) on Antibiotic-Resistant Enterococci Clinical Isolates (In Vitro),” INTERNATIONAL JOURNAL OF ENTERIC PATHOGEN, vol. 8, no. 4, pp. 137–141, 2020, [Online]. Available: https://sid.ir/paper/705596/en

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