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Related Concept Videos

Overview of Exosomes01:36

Overview of Exosomes

Exosomes are stable, lipid bilayer-enclosed vesicles capable of crossing biological barriers. They can carry a wide range of molecules required for intercellular communication. Once exosomes are released from the cell where they originated, they enter a recipient cell through various pathways such as fusion, receptor-mediated endocytosis, macropinocytosis, and phagocytosis.
Stahl et al. discovered exosomes in 1983, but the exosomes were initially considered waste products released from the...
Diabetic Foot Ulcer01:31

Diabetic Foot Ulcer

Definition A diabetic foot ulcer (DFU) is a chronic, non-healing wound that develops in individuals with diabetes. It typically occurs on pressure-bearing areas such as the heel, metatarsal heads, or hallux, and carries a high risk of infection and amputation.Pathophysiology • The development of DFUs can be explained by four interconnected mechanisms: neuropathy, ischemia, infection, and impaired wound healing. • Neuropathy is the most common factor. Sensory neuropathy reduces pain perception,...
Clinical Applications of Epidermal Stem Cells01:19

Clinical Applications of Epidermal Stem Cells

Epidermal stem cells (EpiSCs) are mainly located at the basal layer of the epidermis. These cells repair minor injuries of the skin and replace dead skin cells. However, EpiSCs’ cannot heal severe wounds such as major burns or those from diabetes or hereditary disorders. In such cases, culturing the epidermal stem cells from the patient is possible and has yielded successful treatment options, such as laboratory-grown skin grafts. These grafts are synthesized using a patient’s own EpiSCs...
Diabetic Neuropathy01:22

Diabetic Neuropathy

DefinitionDiabetic neuropathy is nerve damage caused by long-standing diabetes mellitus. It results directly from prolonged high blood sugar levels.PathophysiologyThe pathophysiology of diabetic neuropathy involves both metabolic and vascular disturbances triggered by chronic hyperglycemia.Metabolic injury: Elevated glucose levels activate the polyol pathway within nerve cells, leading to the accumulation of sorbitol and fructose. This increases oxidative stress, disrupts normal nerve...
Inflammatory Response II: Inflammatory Exudate and Tissue Repair01:24

Inflammatory Response II: Inflammatory Exudate and Tissue Repair

The immune system's inflammatory response destroys the invading pathogen, permitting the tissue to heal. The changes during the cellular and vascular stages allow exudate formation at the site of inflammation. The inflammatory exudate released from the wound has high protein content and a specific gravity above 1.020.
The typical wound exudate is odorless, transparent, straw-colored, thin, and watery. Exudate, however, can differ depending on the state of wound healing. Likewise, the exudate's...

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Related Experiment Video

Updated: May 26, 2026

Human Ex vivo Wound Model and Whole-Mount Staining Approach to Accurately Evaluate Skin Repair
07:32

Human Ex vivo Wound Model and Whole-Mount Staining Approach to Accurately Evaluate Skin Repair

Published on: February 17, 2021

Understanding exosomes in diabetic wound healing.

Paras Ahmad1, Yulan Wang2, Yufeng Zhang2

  • 1Department of Research, Advanced PRF Education, Jupiter, Florida, USA.

Periodontology 2000
|May 25, 2026
PubMed
Summary

Exosome therapy shows promise for healing diabetic wounds by improving blood vessel growth and reducing inflammation. Further research is needed to standardize treatments for clinical use.

Keywords:
diabetes mellitushyperglycemiaregenerationskinstem cells

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Prospective, Randomized, and Controlled Study of a Human Umbilical Cord Mesenchymal Stem Cell Injection for Treating Diabetic Foot Ulcers
04:09

Prospective, Randomized, and Controlled Study of a Human Umbilical Cord Mesenchymal Stem Cell Injection for Treating Diabetic Foot Ulcers

Published on: March 3, 2023

Area of Science:

  • Regenerative Medicine
  • Biotechnology
  • Wound Healing Research

Background:

  • Diabetic wounds are a severe complication of diabetes, marked by inflammation and poor healing.
  • Current treatments for diabetic wounds lack efficacy and long-term benefits.
  • Exosome-mediated interventions offer a cell-free regenerative approach for diabetic wound healing.

Purpose of the Study:

  • To review exosome-mediated interventions for diabetic wound healing.
  • To assess exosome origins, mechanisms, delivery, and outcomes.
  • To evaluate exosomes as a regenerative strategy for diabetic wounds.

Main Methods:

  • Conducted a narrative-scoping review of 176 studies from major databases.
  • Included preclinical and clinical studies on diabetic wound healing.
  • Evaluated exosome sources, delivery systems, and therapeutic effects.

Main Results:

  • Exosomes from various sources enhanced angiogenesis, re-epithelialization, and fibroblast proliferation.
  • Exosomes reduced oxidative stress, inflammation, ferroptosis, and apoptosis via specific signaling pathways.
  • Biomaterial delivery systems improved exosome efficacy, leading to faster wound closure and better vascularization.

Conclusions:

  • Exosome therapies are a promising regenerative strategy for diabetic wound healing.
  • Exosomes address key pathological issues in diabetic wounds.
  • Standardization, scalability, and clinical validation are necessary for widespread application.