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Randomized Controlled Trial
. 2017 Dec;28(6):577-e140.
doi: 10.1111/vde.12467. Epub 2017 Jul 23.

Randomized, double-blinded, placebo-controlled pilot study on the effects of topical blackcurrant emulsion enriched in essential fatty acids, ceramides and 18-beta glycyrrhetinic acid on clinical signs and skin barrier function in dogs with atopic dermatitis

Rosanna Marsella  1 , Luisa Cornegliani  2 , Ibrahim Ozmen  3 , Mary Bohannon  1 , Kim Ahrens  1 , Domenico Santoro  1
Affiliations
Randomized Controlled Trial

Randomized, double-blinded, placebo-controlled pilot study on the effects of topical blackcurrant emulsion enriched in essential fatty acids, ceramides and 18-beta glycyrrhetinic acid on clinical signs and skin barrier function in dogs with atopic dermatitis

Rosanna Marsella et al. Vet Dermatol. 2017 Dec.

Abstract

Background: Lipid-based emulsions can be useful for the management of canine atopic dermatitis (cAD). 18-beta glycyrrhetinic acid (GRA), a component of liquorice root, has anti-inflammatory and anti-pruritic effects.

Hypothesis/objectives: To evaluate the effects of a topical lipid emulsion containing ceramides, fatty acids and GRA on clinical signs of cAD and skin barrier in a randomized, double-blinded, placebo-controlled trial.

Methods: Client owned (n = 45) dogs with nonseasonal, mild/moderate AD, received either treatment or placebo for three months. Skin lesions, pruritus, transepidermal water loss (TEWL) and global assessment (GA) were evaluated.

Results: Fourteen dogs receiving treatment and 14 receiving the placebo completed the study. After one month ≥50% reduction in pruritus was seen in seven of 14 dogs (50%) in the Treatment group, and in two of 14 dogs (14.3%) in the Control group (P = 0.047). After two and three months, significant reduction in pruritus was not seen. For Canine Atopic Dermatitis Extent and Severity Index (CADESI), TEWL and GA, there were no significant findings over time or between groups.

Conclusions and clinical relevance: The emulsion had some transient beneficial clinical effects. However, it was not effective in controlling pruritus as a monotherapy. Further studies should examine whether owner compliance was a factor in the steady decline of effect on pruritus scores. Further studies evaluating its role as an adjunctive therapy are indicated.

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