Amelioration in wound healing in diabetic toll-like receptor-4 knockout mice

Mohan R. Dasu, Ishwarlal Jialal

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Toll-like receptor-4 (TLR4) is a sentinel pathogen recognition receptor with a pivotal role in inflammation, tissue injury, diabetes and its complications. The aim of the study was to examine the contribution of TLR4 expression and activation to the prolonged inflammation observed in diabetic wounds. Diabetes was induced in male C57BL/6 J and TLR4 knockout (KO) mice using streptozotocin (STZ) with matching non-diabetic mice as control. After 2 weeks of persistent hyperglycemia in the mice, full-thickness excision wounds were made on the backs aseptically. Total RNA and protein were subjected to real-time PCR and western blot analyses. Wound sizes were measured using digital planimetry. TLR4 mRNA and protein expression increased significantly in wounds of diabetic mice compared with non-diabetic mice (P < 0.05). IL-6, TNF-α concentration and nuclear factor-κB (NF-κB) activation were increased in diabetic wounds compared to non-diabetic wounds and knockout of TLR4 alleviates wound healing and decreases inflammation in diabetic TLR4 KO mice. Collectively, our findings show that increased TLR4 mRNA and protein expression and activation contribute to the prolonged inflammation in the diabetic wounds and that absence of TLR4 may result in decreased inflammation and improved wound healing.

Original languageEnglish (US)
Pages (from-to)417-421
Number of pages5
JournalJournal of Diabetes and its Complications
Volume27
Issue number5
DOIs
StatePublished - Sep 2013

Fingerprint

Toll-Like Receptor 4
Knockout Mice
Wound Healing
Wounds and Injuries
Inflammation
Messenger RNA
Proteins
Diabetes Complications
Streptozocin
Hyperglycemia
Real-Time Polymerase Chain Reaction
Interleukin-6
Western Blotting
RNA

Keywords

  • Diabetes
  • Inflammation
  • Mellitus
  • TLR4
  • Wound healing

ASJC Scopus subject areas

  • Endocrinology
  • Endocrinology, Diabetes and Metabolism
  • Internal Medicine

Cite this

Amelioration in wound healing in diabetic toll-like receptor-4 knockout mice. / Dasu, Mohan R.; Jialal, Ishwarlal.

In: Journal of Diabetes and its Complications, Vol. 27, No. 5, 09.2013, p. 417-421.

Research output: Contribution to journalArticle

Dasu, Mohan R. ; Jialal, Ishwarlal. / Amelioration in wound healing in diabetic toll-like receptor-4 knockout mice. In: Journal of Diabetes and its Complications. 2013 ; Vol. 27, No. 5. pp. 417-421.
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