ArticleScientific reports2025
Evaluation of how laser photostimulation at two wavelengths alters the antimicrobial potential of Streptomycetes spp.
Article in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
The purpose of this study was to isolate and identify additional products produced by direct laser irradiation, as well as to ascertain if laser irradiation may stimulate the synthesis of antibiotic compounds in a local Streptomycetes (Strept). Moreover, we postulate the mechanisms by which lasers function within living bacterial cells and suggest that sequential photochemical reactions may transpire following a designated period of irradiation. Thiophene was found as one of the most significant clinical products with antibacterial and anticancer properties. To accomplish these objectives, we selected two isolates: Streptomyces thinghirensis strain S10 (Strept thin), which inherently synthesizes an antibacterial agent, and Streptomyces lienomycini strain C.P.57 (Strept.lieno), which does not generate antimicrobials. The experimental isolates were exposed to identical circumstances as the control isolates, with the exception that the inoculum underwent irradiation with a diode laser for varying durations. We initially assessed the antibacterial efficacy of the irradiation and control Strept. Gas chromatography-mass spectrometry (GC-MS) was utilized to discover antibacterial substances. Ultimately, we determined that laser irradiation caused alterations in both antimicrobial-producing and non-producing Strept.; specifically, those that produced antimicrobials ceased to do so post-irradiation, and conversely.
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