Features of skin wound healing in rats with experimental chronic kidney disease
Abstract
Chronic kidney disease negatively affects the morphofunctional state of all organs due to hemodynamic and metabolic disorders. Changes in the content of cytokines observed in kidney diseases, which regulate the processes of inflammation and tissue repair, can complicate the course of the wound process. This research aimed to study disorders in the process of skin wound repair due to changes in the dynamics of production of interleukins IL-1β, IL-6, IL-10, IL-4, growth factors bFGF and VEGF in animals with experimental chronic kidney disease. The levels of interleukins and growth factors were determined on the 7th, 14th and 28th days after surgical modeling of wounds in the blood of rats with experimental chronic kidney disease and animals of the control group. To assess the dynamics and quality of wound healing, a semi-quantitative histological analysis was performed. The study showed an increase in the content of pro-inflammatory interleukins in the group of sick rats: on the 7th day the level of IL-1β was 1.19 times higher, and IL-6 – 1.55 times, on the 14th day the level of IL-1β was 1.37 times in comparison with the control group. The maximum increase in the concentration of anti-inflammatory interleukins was noted on the 28th day: IL-4 was 2.10 times higher, IL-10 – 1.39 times higher than in the control group. The content of bFGF and VEGF in animals of the control group reached its maximum on the 7th day, and in animals with chronic kidney disease – on the 15th day after surgery. Semi-quantitative histological analysis showed a decrease in indicators in the group of sick animals: the number of fibroblasts and collagen deposition – on the 7th day, reepithelialization – on the 28th day. A persistent increase in the number of polymorphonuclear leukocytes was also noted at all periods of the experiment: by 1.38, 1.99, and 9.82 times – on the 7th, 14th, and 28th days, respectively. The study showed that the dynamics of the production of interleukins and growth factors were impaired in rats with chronic kidney disease. In the process of damage regeneration in sick animals, pro-inflammatory mechanisms prevailed with the involvement of a large number of immunocompetent cells, as a result, skin wounds took longer to heal.References
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