ArticleLasers in medical science2022
Fractionated low-level laser irradiation on breast cancer (MCF 7 cells) treatment.
Article in Lasers in medical science, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed, 8 citations in OpenAlex.
- Development of a Computer Program for Determining the Dose of Laser Radiation (860 nm) Received by Tumor and Breast Tissue.Cancers · 2026Article
- Nanostructured lipid carriers containing pheophytins derived from Cnidoscolus quercifolius Pohl for photodynamic therapy against breast cancer: isolation, identification, characterization, in vitro activity, and in silico studies.Lasers in medical science · 2025Article
- Experimental study on the safety of photobiologic regulation therapy in the treatment of some non-epidermal tumors.Lasers in medical science · 2024Article
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Authors and funding
6 authors at 1 institution in 3 countries.
Funding
Abstract
Breast cancer is responsible for one of the top leading causes of cancer deaths among women. Radiotherapy (RT) uses high energy radiation to kill cancer cells, but this method has been reportedly linked to risks of toxicity. Post-therapeutic relapse from RT believed to be caused by its toxicity is one of the challenges encountered during tumour therapy. Therefore, further attention should be devoted to developing novel anti-tumour therapeutic approaches. The role of low-level laser therapy (LLLT) in breast cancer management is to alleviate the side effects arising from RT, instead of acting against the tumour cells directly. This study investigated the effects of low-level laser (532 nm), as well as single and fractionated irradiation, on breast cancer MCF 7 cell line. Additionally, this study assessed the most effective laser parameter for fractionated irradiation. The MCF 7 cells were irradiated with green laser power at 1.5, 45.0, and 100.0 mW with a spot size diameter of 0.7 mm for 1, 5, 10, and 15 min. The irradiation was carried out in single, double, and triple fractionation separated by 5- and 10-min intervals in between the fractional regimes. The laser output of 100 mW showed a promising potential in killing cells with single fractionation. However, as the irradiation was fractionated into two, power of 1.5 mW appeared to be more effective in cell death, which contributed to the lowest percentage cells viable of 31.4% recorded in the study. It was proven that fractionated regime was more successful in tumour cell death.
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