%0 Journal Article
%T Effect of Novel Marine Nutraceuticals on IL-1¦Á-Mediated TNF-¦Á Release from UVB-Irradiated Human Melanocyte-Derived Cells
%A Visalini Muthusamy
%A Lynn D. Hodges
%A Theodore A. Macrides
%A Glen M. Boyle
%A Terrence J. Piva
%J Oxidative Medicine and Cellular Longevity
%D 2011
%I Hindawi Publishing Corporation
%R 10.1155/2011/728645
%X UV-induced inflammation and reactive oxygen species formation are involved in the development of melanoma. Natural products like 5β-scymnol and CO2-supercritical fluid extract (CO2-SFE) of mussel oil contain anti-inflammatory and antioxidant properties that may aid in reducing the deleterious effects of UV radiation. Therefore, their effect on the release of the proinflammatory cytokine, tumour necrosis factor-α (TNF-α), from UVB-irradiated human melanocytic cells was examined. Human epidermal melanocytes (HEM) and MM96L melanoma cells were exposed to UVB radiation and IL-1α. Cell viability and TNF-α levels were determined 24 hours after-irradiation while p38 mitogen-activated protein kinase (MAPK) activation was observed at 15 min after-irradiation. When α-tocopherol, CO2-SFE mussel oil, and 5β-scymnol were added to the UVB-irradiated HEM cells treated with IL-1α, TNF-α levels fell by 53%, 65%, and 76%, respectively, while no inhibition was evident in MM96L cells. This effect was not due to inhibition of the intracellular p38 MAPK signalling pathway. These compounds may be useful in preventing inflammation-induced damage to normal melanocytes.
%U http://www.hindawi.com/journals/oximed/2011/728645/