Infrared polarized light facilitates and improves the quality of skin wound healing in the rat model (Experimental study)

The aim of the present study was to investigate the effects of polarized-infrared light on secondary skin wound healing of full thickness skin wounds in a rat model. Full thickness skin wounds sized 2 by 2 cm were surgically inflicted in two groups of male Wistar rats, 20 animals each. In the first group (experimental group - EG) the animals were exposed 7 min daily to polarized-infrared light produced by a BIOPTRON device. In the second group (control group - CG), the animals were subjected to the same procedure, but with the device not activated. Mice were sacrificed on 0, 5th, 10th, 15th and 20th day, following the infliction of skin defect. Size and healing process of each wound were recorded and evaluated by means of planimetry and histological examination. Skin biopsies were taken from euthanized rats and histological examinations were prepared. According to our findings with the planimetry evaluation, there was acceleration of the healing process in experimental group, whereas an improvement of healing process was identified at each time of histological examination, compared to the control group

Keywords: polarized-infrared light, wound healing, neovascularization, re-epithelialization