Amaranth Oil and Rose Oil Blend (AMOR) Enhances Anti-inflammatory and Cytotoxic Effects in Skin Cell Models

Chronic dermatologic inflammation and uncontrolled cell proliferation are hallmarks of many skin conditions, including psoriasis, eczema, and certain skin cancers. Current therapeutic strategies often involve corticosteroids or immunosuppressants, which can have significant side effects with long-term use. There is a growing interest in natural compounds with anti-inflammatory and cytotoxic properties that offer a safer, complementary approach. Amaranth oil, rich in squalene and antioxidants, has shown promise, but its efficacy and optimal formulation for skin applications, particularly in combination with other beneficial oils like rose oil, warrant further investigation to address these therapeutic gaps.

Researchers evaluated the anti-inflammatory and cytotoxic properties of Amaranth oil (AMO) and a topical formulation enriched with rose oil (AMOR) in skin-relevant cell models. Two complementary inflammation models were utilized: LPS-stimulated macrophages and TNF-α/IFN-γ-stimulated keratinocytes, to assess immunomodulatory potential. Cytotoxicity was evaluated in HaCaT keratinocytes and BJ fibroblasts, representing key skin cell types. Additionally, albumin-binding studies were conducted to understand potential delivery and tissue retention mechanisms. The study compared the effects of AMO versus AMOR, with untreated cells serving as controls, to determine the enhanced benefits of the enriched formulation.

Both Amaranth oil (AMO) and its rose-enriched formulation (AMOR) demonstrated promising topical safety across various skin-related cell models, indicating a favorable tolerability profile. Crucially, AMOR exhibited enhanced anti-inflammatory effects compared to AMO in both LPS-stimulated macrophages and TNF-α/IFN-γ-stimulated keratinocytes, suggesting superior immunomodulatory potential. This enhanced effect is attributed to AMOR's enriched composition. Furthermore, AMOR also displayed enhanced cytotoxic effects in the tested skin-related cell models, indicating a potential role in managing conditions characterized by abnormal cell proliferation. Albumin-binding studies provided mechanistic insight, showing that:

AMOR had stronger interactions with these proteins, which may enhance its delivery and tissue retention within the skin. This stronger binding capacity could contribute to AMOR's improved efficacy and sustained action compared to AMO, making it a more potent candidate for dermatologic applications.