摘要：Recently, some properties of myo -inositol hexakisphosphate (InsP6) are related to its dermatological use as discolouring agent, on preventing calcinosis cutis or due to its important role on premature aging. Some studies also seem to demonstrate a capacity of InsP6 to inhibit skin cancer. In this paper, a first study of the absorption of InsP6 through the skin is developed. Due to the correlation between InsP6 absorption and its urinary excretion, these last values were used to evaluate this process. It was found that using a moisturizing cream as vehicle, the InsP6 sodium salt was absorbed at significantly higher amounts than the InsP6 calcium–magnesium salt. Maximum InsP6 urinary concentrations were observed approximately at 14 d of 2% InsP6 topical cream application, and gave 66.35±5.49 mg/l urinary InsP6 when the sodium salt was used and 16.02±2.61 mg/l urinary InsP6 when the calcium–magnesium salt was applied. When the InsP6 topical cream administration ceased, the InsP6 urinary excretion fell dramatically approximately during a period of 10 d. From these results, it can be deduced that by topical administration InsP6 can achieve important concentrations in tissues and biological fluids, this demonstrating that it is possible to propose the topic use as a new InsP6 administration route.
关键词：InsP6 skin absorption;urinary excretion;cream application;dermatological use
