Photodynamic therapy and Green Laser blood Therapy

Abstract

Background: In vitro irradiation of human blood with laser light is under investigation for years, to study the biostimulatory effects on various blood cells. However, any positive effects of this light on the rheology of platelets have not been documented with authenticity due to lack of research. Methods: In our present study, we investigated the influence of different levels of laser on the damage threshold of blood cells .Laser diodes were used as a source of radiation in different levels of irradiation protocol. Blood was taken from one hundred adult patients. After adding anticoagulant (EDTA), the samples were divided into four groups for irradiating with different laser intensities. And each sample was subdivided into two, so that one was irradiated and the other considered as control sample. The samples were made to stand for 30 minutes before determining the change in rheological properties of blood cells. Results: It was established that low level laser therapy when used on human blood in vitro, affects the rheology of erythrocytes and leucocytes. It was observed that it changes the erytherocytatory, leucocytatory, BSR, aggregability indices of blood .Conclusions Thus it was concluded that low level laser therapy can affect the physical as well as chemical properties of blood cells which is not only helpful in preservation of blood but also in revitalizing the physically and chemically stressed erytherocytatory membranes. It was determined that the laser therapy decreases the viscosity of blood thus increasing the electrophoretic mobility of erythrocytes.