Anti-inflammatory, procollagen, and wound repair properties of topical insulin gel.

APOLINÁRIO, PP, ZANCHETTA, FC, BREDER, JSC, ADAMS, G, CONSONNI, SR, GILLIS, R, SAAD, MJA and LIMA, MHM (2023). Anti-inflammatory, procollagen, and wound repair properties of topical insulin gel. Brazilian journal of medical and biological research = Revista brasileira de pesquisas medicas e biologicas, 56: e12640.

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Diabetes mellitus is associated with impaired wound healing. The topical use of insulin is a promising therapy because it may favor all phases of the wound healing process. This study aimed to investigate the therapeutic outcomes of insulin gel in wounds of hyperglycemic mice. After diabetes induction, a 1-cm2 full-thickness wound was created on each animal's dorsum. The lesions were treated daily for 14 days with insulin gel (insulin group) or vehicle gel without insulin (vehicle group). Tissue samples were extracted on days 4, 7, 10, and 14 after the creation of the lesion. The samples were analyzed with hematoxylin/eosin and Sirius red staining, immunohistochemistry, Bio-Plex immunoassays, and western blotting. Insulin gel favored re-epithelialization at day 10 and increased the organization and deposition of collagen. Additionally, it modulated the expression of cytokines (interleukin (IL)-4 and IL-10) and increased the expression of arginase I, VEGF receptor 1, and VEGF on day 10. Activation of the insulin signaling pathway occurred via IRβ, IRS1, and IKK on day 10 and activation of Akt and IRS1 on day 14. These results suggested that insulin gel improved wound healing in hyperglycemic mice by modulating the expression of inflammatory factors, growth factors, and proteins of the insulin signaling pathway.

Item Type: Article
Uncontrolled Keywords: Animals; Mice; Mice, Obese; Insulin; Procollagen; Anti-Inflammatory Agents; Wound Healing; Mice; Animals; Insulin; Procollagen; Mice, Obese; Wound Healing; Anti-Inflammatory Agents; 11 Medical and Health Sciences; Neurology & Neurosurgery; 31 Biological sciences; 32 Biomedical and clinical sciences
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SWORD Depositor: Symplectic Elements
Depositing User: Symplectic Elements
Date Deposited: 13 Jun 2023 12:08
Last Modified: 11 Oct 2023 14:02

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