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Diabetology & Metabolic Syndrome· 2026Q1

Effect of GLP-1RA on circulating SASP levels and wound healing in patients with diabetic foot ulcers: a randomized, placebo-controlled clinical trial

Murong Li, Cuili Yan, LI Jiangxia, Biying Wu et al.

Short summary

Liraglutide, a GLP-1 receptor agonist, significantly reduced wound healing time by 33% and ulcer area by 50% at one month in patients with diabetic foot ulcers (DFUs) compared to placebo (n=105). The treatment also decreased circulating senescence-associated secretory phenotype (SASP) factors.

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Key points

  • Liraglutide treatment reduced wound healing time by 33% and ulcer area by 50% at one month in DFU patients (n=105).
  • Complete ulcer healing at three months was significantly higher in the liraglutide group.
  • Circulating levels of SASP factors (interleukins, chemokines, growth factors) decreased significantly after one month of liraglutide.
  • Amputation rates at six months were similar between liraglutide and placebo groups.

AI-generated from the title and abstract; the full text is not read.

Abstract

Diabetic foot ulcers (DFUs) is strongly correlated with aging, yet the effects of anti-senescent treatments on DFU wound repair are poorly characterized. We aimed to investigate whether glucagon-like peptide-1 receptor agonists (GLP-1RAs), a class of geroprotective agents, promote wound healing in patients with DFUs. In this prospective, randomized placebo-controlled clinical trial, we enrolled 105 eligible participants, who were randomly assigned in a 1:1 ratio to receive either GLP-1RA (liraglutide) or placebo. The primary outcome was wound healing time, and the key secondary outcome encompassed the circulating levels of senescence-associated secretory phenotype (SASP) factors. The mean age of the overall cohort was 73.7 ± 7.9 years, and males accounted for 55.2% of all participants. Patients treated with liraglutide had a significantly shorter wound healing time and a greater reduction in ulcer area at the one-month follow-up. Complete ulcer healing at three months was significantly more prevalent in liraglutide group, while the six-month amputation rate was similar between the two groups. Circulating levels of various SASP components, including interleukins, chemokines, and growth factors, significantly decreased after liraglutide intervention for one month. Liraglutide therapy ameliorates systemic SASP levels and accelerates wound healing in patients with DFUs, providing novel clinical evidence linking geroprotection to wound healing promotion. ChiCTR2500104914 (registered on June 25, 2025).

The authors' abstract, as published at the source. Diabetology & Metabolic Syndrome, 2026 · DOI ↗

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Field: Rehabilitation

RehabilitationMedicine