Elimination and Tolerance of a New Parenteral Lipid Emulsion (SMOF) – A Double-Blind Cross-Over Study in Healthy Male Volunteers

AIMS: The objective of this phase I study was to investigate plasma elimination and tolerance of a new lipid emulsion based on soybean oil, medium chain triglycerides (MCT), olive oil and fish oil (SMOF). METHODS: In a double-blind, randomized, cross-over study, 12 healthy male subjects received SMOF 20% and a standard soybean oil emulsion (Lipovenoes 20%, both Fresenius Kabi). Lipid emulsions were infused at a rate of 0.125 g fat/kg body weight/h over 6 h. Before, during and up to 24 h after infusion, lipid metabolism parameters and numerous clinical, chemical and hematological parameters, vital signs and local tolerance were determined. RESULTS: Infusion of SMOF induced a less marked increase of serum triglyceride concentration. At the end of infusion, mean serum triglyceride concentration was significantly lower with SMOF (p < 0.05). Triglyceride half-life was significantly shorter for SMOF than for Lipovenoes (p < 0.001). Infusion of SMOF was apparently associated with higher glycerol concentration (NS). Routine laboratory parameters, vital signs and local tolerance showed no evidence of infusion-related abnormalities. CONCLUSION: SMOF was eliminated significantly faster than the standard lipid emulsion. This is of potential benefit in patients with limited triglyceride elimination capacity. The safety evaluation revealed a good systemic and local tolerance of SMOF.