Effect of Marine Protein Supplementation on Lipid Profile of Growing Rats Compared to Soybean Protein and Casein

Although beneficial effects of dietary plant proteins on lipid metabolism are well documented, not much
information exists on the influence of different seafood proteins on the lipid metabolism. The present study evaluated the
effect of 2 marine proteins (tuna protein and scallop ovary proteins) in comparison to casein and soy protein in male Wistar
rats. The concentration of total lipids in the plasma of rats fed experimental diets was significantly lower from that of control
(278.2 mg/dL) group (p<0.05); and, the liver lipid content was not significantly different (p>0.05). Fecal excretion of
cholesterol and bile acids was significantly higher in marine proteins and soy protein fed groups compared to casein only fed
control (6.1 and 6.4 mg/day, respectively) group (p<0.05). No significant differences were observed in the mRNA
concentrations of different transcriptional factors (p>0.05).