Photobiomodulation improves cutaneous wound healing in an animal model of type II diabetes
| Autor: | Lauren Barna, Leonardo Longo, Kimberly R. Byrnes, Juanita J. Anders, Ronald W. Waynant, Bryan Johnson, Ilko K. Ilev, V. Michelle Chenault, Clelia Miracco |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
Male
Pathology medicine.medical_specialty Biomedical Engineering Sensitivity and Specificity Diabetes Mellitus Experimental Type ii diabetes Random Allocation Animal model Reference Values Diabetes mellitus medicine Animals Radiology Nuclear Medicine and imaging Low-Level Light Therapy Skin pathology Skin Random allocation Wound Healing biology business.industry Background data Biopsy Needle medicine.disease biology.organism_classification Immunohistochemistry Surgery Rats Disease Models Animal Diabetes Mellitus Type 2 Wounds and Injuries Female Fibroblast Growth Factor 2 Psammomys Cutaneous wound business Gerbillinae |
| Zdroj: | Photomedicine and laser surgery. 22(4) |
| ISSN: | 1549-5418 |
| Popis: | We investigated the effects of photobiomodulation (PBM) on cutaneous wound healing in an animal model of type II diabetes, Psammomys obesus (Sand Rats).632-nm light has been established as the most effective wavelength for treatment of cutaneous wounds; however, the inconsistent efficacy of PBM may be due to inadequate treatment parameter selection.Using 632-nm light, an initial series of experiments were done to establish optimal treatment parameters for this model. Following creation of bilateral full-thickness skin wounds, non-diabetic Sand Rats were treated with PBM of differing dosages. Wound healing was assessed according to wound closure and histological characteristics of healing. Optimal treatment parameters were then used to treat type II diabetic Sand Rats while a diabetic control group received no irradiation. In order to elucidate the mechanism behind an improvement in wound healing, expression of basic fibroblast growth factor (bFGF) was assessed.Significant improvement in wound healing histology and wound closure were found following treatment with 4 J/cm(2) (16 mW, 250-sec treatments for 4 consecutive days; p0.05). The 4 J/cm(2) dosage significantly improved histology and closure of wounds in the diabetic group in comparison to the non-irradiated diabetic group. Quantitative analysis of bFGF expression at 36 h post-injury revealed a threefold increase in the diabetic and non-diabetic Sand Rats after PBM.The results demonstrate that PBM at an energy density of 4 J/cm(2) is effective in improving the healing of cutaneous wounds in an animal model of type II diabetes, suggesting that PBM (632 nm, 4 J/cm(2)) would be effective in treating chronic cutaneous wounds in diabetic patients. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|