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Abstract
Low-level laser therapy is an irradiation technique that has the ability to induce biological processes using photon energy. There are studies showing proliferation and angiogenesis after irradiation in skeletal muscle post-myocardial infarction tissue cells. Most evidence of efficacy is based on the increase in energy state and the activation of mitochondrial pathways. In the brain, there is similar evidence of cellular activity with laser irradiation. In vivo studies reinforced the efficacy of this technique for a better neurological and functional outcome post-stroke. The evidence is based on in vivo animal studies of various models and one human clinical study. Although the data is very promising, some fundamental questions remain to be answered, such as the exact mechanism along the cascade of post-stroke interconnective molecular disturbance, the optimal technique and time of treatment, and the long-term safety aspects. The answers to these questions are expected to evolve within the next few years.
