Pressure sores, diabetic ulcers and venous wounds
Quick answer
A chronic wound is one that has not healed in 4-6 weeks, usually because of poor perfusion, infection or stalled inflammation. Exosomes and stem cell secreted factors carry growth signals that encourage capillary and collagen formation — but only alongside standard wound care.
The non-negotiables in chronic wound care are offloading pressure, debriding dead tissue, controlling infection and assessing limb perfusion. If arterial flow is too poor, no growth factor will close the wound.
Exosomes are tiny vesicles cells release to communicate, carrying proteins and RNA that change how neighbouring cells behave. Practically, they are not living cells, which makes storage and standardisation easier in some settings.
Diabetic patients with a foot ulcer should be assessed by a wound team first: a delay of even a few weeks meaningfully raises amputation risk. Adjunct options should support the plan, never postpone the main treatment.
Not exactly — they deliver signals but no cells that adapt to the environment; treat them as different tools.
Infection must be controlled first, otherwise tissue stimulation will not work.
Last updated: 2026-08-28 · This content is for information only and is not medical advice. Consult a qualified doctor before making treatment decisions.
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