Review Article

Topical Herbal Application in the Management of Atopic Dermatitis: A Review of Animal Studies

Table 4

Investigated herbs, results, and suggested mechanisms of action in the included studies.

Ref. numberHerb Outcomes and resultsSuggested mechanisms

[14]Bambusae caulis TEWL↓
serum IgE↓ eosinophil↓
spleen IFN-γ↑ TNF-α↓ IL-4↓ IL-13↓
Suppression of Th2 response and promotion of Th1 response

[15]Broussonetia kazinoki Plasma IgE↓ IL-4↓
skin mast cell↓
Suppression of Th2 response

[28]Alnus japonica Clinical score↓
serum IgE↓ eosinophil↓
skin IL-4↓ IL-5↓ IL-13↓ iNOS↓ COX-2↓
Suppression of Th2 response

[29]Korean red ginsengScratching↓
serum IgE↓ IL-4↓ IL-10↓
Suppression of Th2 response

[16]Cordyceps bassiana Clinical score↓ epidermal thickness↓
serum IgE↓ histamine↓ skin IFN-γ↓ IL-4↓ mast cell↓
Suppression of both Th1 and Th2 responses

[30]Chelidonium majus Clinical score↓ ear thickness↓ scratching↓
serum IgE↓ IL-4↓ TNF-α
Suppression of Th2 response

[31]Cinnamomum cassia Serum IgE↓ histamine↓ TNF-α
skin IL-4↓ TNF-α↓ TARC↓
Suppression of Th2 response

[24]Terminalia chebula RetziusEar thickness↓
skin inflammatory cells↓ eosinophils↓
ear IL-31↓ T-bet positive cell↑ MMP-9↓
Suppression of Th2 response and promotion of Th1 response

[9]Lindera obtusiloba Ear thickness↓
serum IgE↓ DfE specific IgE↓ histamine↓
ear mast cell↓ IL-4↓ IL-13↓ IL-31↓ TNF-α
Suppression of Th2 response

[22]Rehmannia glutinosa Clinical score↓ ear thickness↓
serum IgE↑ histamine↓
ear IL-4↓ TNF-α↓ TARC↓ MDC↓ RANTES↓ ICAM-1↓ VCAM-1↓
Suppression of Th2 response

[17]Angelicae Dahuricae Radix Clinical score↓
plasma IgE↓ histamine↓
Suppression of Th2 response

[18]Vernonia amygdalina Clinical score↓ ear thickness↓ scratching
serum IgE↓ IL-4↓ IL-5↓ MCP-1↓ eotaxin↓
Suppression of Th2 response

[25]Chrysanthemum boreale MakinoClinical score↓ ear thickness↓ scratching↓
serum IgE↓ TNF-α↓ IL-4↓
Suppression of Th2 response

[32]Mycelium of Phellinus linteus Clinical score↓ ear thickness↓
serum IgE↓ DfE specific IgE↓ total IgG—
ear IL-12↓ IFN-γ↓ IL-4↓ IL-5↓ IL-10↓ IL-13↓ TNF-α↓ CCL4↓ CCL22↓ CCL17— CCL20— eotaxin— IL-2↓
Suppression of both Th1 and Th2 responses

[33]Psidium guajava Clinical score↓
serum IgE↓ TARC↓ IL-10↑
ear IFN-γ↓ TNF-α↓ IL-4↓ IL-5↓ IL-13↓
Suppression of both Th1 and Th2 responses and upregulation of IL-10

[34]Drynaria fortunei Clinical score↓ ear thickness↓
serum IgE↓ IgG1↓ IgG2a— IL-4↓ IL-6↓ TNF-α
ear IFN-γ— IL-4↓ TNF-α↓ IL-6↓ ICAM-1— VCAM-1
Suppression of Th2 response

[35]Schisandra chinensis Clinical score↓ scratching↓
serum IgE↓ IgM↓ histamine↓
skin histamine receptors↓ spleen IL-4↓ IL-5↓ FcεRIβ
Suppression of Th2 response

[10]Illicium verum Clinical score↓ ear thickness↓
serum IgE↓ histamine↓ IL-6↓ ICAM-1↓
ear IFN-γ↑ IL-4↓ IL-6↓ TNF-α↓ TARC↓ RANTES↓ ICAM-1↓ VCAM-1↓
Suppression of Th2 response and promotion of Th1 response

[36]Chrysanthemum indicum L. Clinical score↓ ear thickness↓
serum IgE↓ IgG1↓ IFN-γ↓ IL-4↓
skin eosinophil↓ mast cell↓ IFN-γ↓ IL-4↓ IL-13↓
IL-4 : IFN-γ ratio↓
Suppression of both Th1 and Th2 responses and balancing of Th1/Th2 cell responses

[37]Catalpa ovata Clinical score↓
serum IgE↓
skin mast cell↓ IL-4↓ IL-5↓ IL-6↓ IL-13↓ IL-1b↓ TNF-α
Suppression of Th2 response

[38]Astragalus membranaceus Epidermal thickness↓ dermal thickness↓
serum IgE↓ IL-4↓ IL-5↓ IL-6↓ IL-13↓ TNF-α
skin NF-κB↓
Suppression of Th2 response

[11]Pleurotus eryngii Clinical score↓ ear thickness↓
serum IgE↓ TARC↓
skin mast cell↓ ear IFN-γ↓ TNF-α↓ IL-4↓ IL-5↓ IL-13↓
Suppression of both Th1 and Th2 responses

“—”: no change, TEWL: transepidermal water loss, Ig: immunoglobulin, IFN: interferon, IL: interleukin, TNF: tumor necrosis factor, iNOS: inducible nitric oxide synthase, COX: cyclooxygenase, TARC: thymus and activation-regulated chemokine, MMP: matrix metalloproteinase, MDC: macrophage-derived chemokine, RANTES: regulated on activation normal T-cell expressed and secreted, ICAM: intercellular adhesion molecule, VCAM: vascular adhesion molecule, MCP: monocyte chemoattractant protein, CCLCC: chemokine ligand, FcεRI: high-affinity IgE receptor, and NF-κB: nuclear factor-κB.