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- Title
Renal dysfunction aggravated impaired cutaneous wound healing in diabetic mice.
- Authors
Xie, Ping; Young, Mimi Wu; Bian, Huining; Niknam‐Bienia, Solmaz; Hong, Seok; Mustoe, Thomas A; Galiano, Robert D
- Abstract
Renal dysfunction has been associated with poor outcomes of wound healing in the diabetic population. The purpose of this study was to create an excisional wound healing model in diabetic mice with renal dysfunction to investigate the combined effects of diabetes and nephropathy on cutaneous ulcers. Renal impairment was introduced in diabetic db/db mice through unilateral nephrectomy and electrocoagulation of the contralateral kidney. Renal function was subsequently monitored with assays of blood urea nitrogen and spot urinary protein/creatinine ratio. After 8 weeks, splinted, full‐thickness excisional wounds were created on the dorsal skin and harvested on postoperative days 7 and 14 for further evaluation of wound healing. Renal injury promoted the increase of blood urea nitrogen 3 weeks after initial operation, which was maintained at double the control level throughout the study, concomitantly leading to a significant increase of spot urinary protein excretion. Diabetic mice with renal injury displayed notably impaired wound healing processes, concurrent with reductions in cellular proliferation and angiogenesis, as well as increases in M1 polarized macrophages, infiltrated neutrophils, oxidative stress, and cellular apoptosis. Furthermore, quantitative polymerase chain reaction (qPCR) results displayed corresponding changes of related genes (TNF‐α, IL‐1β, SOD2) in the wounds of renal injured db/db mice. Renal manipulation in this study accelerated the progress of renal impairment, which was demonstrated to aggravate impaired cutaneous wound healing in diabetic mice.
- Subjects
CELL proliferation; ELECTROCOAGULATION (Medicine); ANIMAL experimentation; APOPTOSIS; CREATININE; INTERLEUKINS; KIDNEYS; MACROPHAGES; MICE; POLYMERASE chain reaction; POSTOPERATIVE period; TUMOR necrosis factors; WOUND healing; OXIDATIVE stress; DIABETIC foot; NEPHRECTOMY; BLOOD urea nitrogen
- Publication
Wound Repair & Regeneration, 2019, Vol 27, Issue 1, p49
- ISSN
1067-1927
- Publication type
Article
- DOI
10.1111/wrr.12682