Iranian Veterinary Journal

Iranian Veterinary Journal

The effect of platelet-rich plasma (PRP) on blood glucose, inflammatory cytokines, and wound healing in diabetic rats

Document Type : Research Paper

Authors
1 DVM Graduated, Faculty of Veterinary Medicine, Lorestan University, Khorramabad, Iran
2 Associate Professor, Department of Basic Sciences Faculty of Veterinary Medicine, Lorestan University, Khorramabad, Iran
3 Assistant Professor, Department of Clinical Sciences, Faculty of Veterinary Medicine, Lorestan University, Khorramabad, Iran
4 Associate Professor, Department of Pathobiology, Faculty of Veterinary Medicine, Lorestan University, Khorramabad, Iran
Abstract
    Diabetes mellitus is one of the most common metabolic disorders, characterized not only by persistent hyperglycemia but also by enhanced oxidative stress and inflammatory responses. Among proinflammatory cytokines, tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6) play central roles in impairing insulin signaling, promoting lipolysis and gluconeogenesis, and exacerbating metabolic dysfunction. Platelet-rich plasma (PRP), enriched with growth factors and regulatory cytokines, has recently gained attention as a potential therapeutic strategy for tissue regeneration and inflammation control. In this study, diabetes was induced in Wistar rats using streptozotocin (65 mg/kg.), and full-thickness excisional wounds (2 cm) were created on the dorsum. The treatment group received daily topical applications of autologous PRP (50 U; 1 mL/kg body weight) from day 6 to day 20. Blood glucose was monitored at defined intervals, and serum IL-6 and TNF-α levels were measured using ELISA. PRP treatment significantly reduced blood glucose levels, particularly on days 3 and 21 of intervention. Moreover, TNF-α and IL-6, two pivotal cytokines involved in systemic inflammation, were markedly decreased in the PRP-treated diabetic group compared with untreated diabetic controls. The findings provide clear experimental evidence for the dual antihyperglycemic and anti-inflammatory properties of PRP in diabetes. By downregulating IL-6 and TNF-α, PRP not only improves glucose metabolism but also alleviates inflammatory responses, underscoring its potential as a novel adjunctive therapy for metabolic and inflammatory complications of diabetes
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