Abstract
The present study was designed to evaluate the effect of a new iron tonic (squid ink melanin-Fe [SM-Fe]) on remission of iron deficiency anemia (IDA) using a rat model of IDA. The rat IDA model was established with low-iron diet feeding and caudal vein blooding. Then different dosages of SM-Fe were given to the rats once a day by intragastric administration, with FeSO4 and FeCl3 as positive control. The content of Hemoglobin (Hb), red blood cell (RBC), hematocrit (HCT), and mean corpuscular volume (MCV) were analyzed in addition to the contents of serum iron (SI) and intracellular free erythrocyte protoporphyrin (FEP). The content of malondialdehyde (MDA) and the activity of superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) in serum was also measured. The results showed that anemia caused by iron deficiency was established as a consequence of the low-iron diets. SM-Fe showed an effective restoration action by returning Hb, RBC, HCT, MCV, SI, and FEP in IDA animals to normal values. An antioxidant effect was also observed that reduced MDA level, enhanced the activities of SOD and GSH-Px in serum, and protected erythrocytes from the injury of reactive oxygen species as a consequence of SM-Fe intake. In comparison with FeSO4 and FeCl3, higher bioavailability of iron and fewer side effects were also observed. In conclusion, SM-Fe remitted iron deficiency anemia symptoms significantly, suggesting that SM-Fe might contribute to improving hemopoietic function in IDA rats and might be exploited as a safe, efficient new iron tonic.
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