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Journal Article
Randomized Controlled Trial
Research Support, Non-U.S. Gov't
Losartan ointment relieves hypertrophic scars and keloid: A pilot study.
Wound Repair and Regeneration 2018 July
Keloid and hypertrophic scars are two types of fibrosis caused by extracellular matrix overexpression, and angiotensin II via AT1 receptor is known to play a key role in stimulation of fibrosis. A pilot placebo controlled single blind study was carried out on patients with hypertrophic scars and keloids. A total of 37 adult volunteers were randomly assigned into losartan 5% or placebo treatment groups. The treatment was performed twice a day for three months and a 6-month follow-up. The treatment was evaluated using Vancouver scar scale method. Totally, 30 participants were analyzed (Losartan ointment n = 20; placebo ointment n = 10; seven placebo volunteers left the study because they thought the treatment was not effective for them). In the losartan group, VSS scores dropped significantly (p < 0.01) both in keloid and hypertrophic scar patients. Vascularity and pliability were significantly reduced by losartan treatment (p < 0.05). It can be concluded that losartan potassium ointment (5%) can alleviate the keloid and hypertrophic scar.
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