MARIA CRISTINA CHAVANTES
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conferenceObject LOW LEVEL LASER THERAPY IMPROVES CARDIOVASCULAR AUTONOMIC ACTIVITY IN SPONTANEOUSLY HYPERTENSIVE RATS(2015) SILVA, Bianca; TOMIMURA, Suely; SANCHES, Iris; CANAL, Marina; PINTO, Nathali; MADI, Otavio; CONTI, Felipe; ANGELIS, Katia De; COLOMBO, Fernanda; CHAVANTES, M. Cristina- Low power lasers: Introduction(2015) CHAVANTES, M. C.; RIBEIRO, M. S.; PINTO, N. C.Over a decade elapsed before Prof. Dr Tiina Karu from the Russian Academy of Laser Sciences unveiled the intricate mechanisms involved in the application of low power lasers and the alterations following their interaction with targeted tissue cells. Lasers are classified into two broad categories, according to their power: high power lasers and low power lasers. Low power lasers can produce photophysical-chemical effects. Regarding low level laser therapy (LLLT) of tissue/cells, the temperature of the targeted area should not exceed 1 °C, implying a power range of 1-500 mW. The photophysical-chemical properties of LLLT refer to its effect on molecules and organelle receptors, which in turn assist in the course of biophysical processes and subsequent biochemical responses. When lasers illuminate biological tissues, energy is delivered to the living system and must be absorbed for effective results. Photodynamic therapy (PDT) has been employed for decades in treating malignant neoplasia. © 2015 by John Wiley & Sons, Inc. All rights reserved.