Topically administered purified clinoptilolite-tuff for the treatment of cutaneous wounds: A prospective, randomised phase I clinical trial.

WOUND REPAIR AND REGENERATION(2022)

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摘要
In an ageing society, chronic ulcers pose an increasingly relevant healthcare issue associated with significant morbidity and an increasing financial burden. Hence, there is an unmet medical need for novel, cost-effective therapies that improve healing of chronic cutaneous wounds. This prospective, randomised, open-label, phase I trial investigated the safety and tolerability of topically administered purified clinoptilolite-tuff (PCT), mainly consisting of the naturally occurring zeolite-mineral clinoptilolite, in artificial wounds in healthy male volunteers compared to the standard of care (SoC). We found that topically administered PCT was safe for therapeutic application in acute wounds in healthy male volunteers. No significant differences in wound healing or wound conditions were observed compared to SoC-treated wounds. However, we found a significantly higher proportion of CD68-positive cells and a significantly lower proportion of α-smooth muscle actin-positive cells in PCT-treated wounds. Scanning electron microscopy revealed PCT particles in the restored dermis in some cases. However, these did not impede wound healing or clinical symptoms. Hence, purified PCT could represent an attractive, cost-effective wound treatment promoting the process of healing.
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chronic wounds, clinical trial, clinoptilolite, wound dressing zeolite
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