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Research Note: Metabolic utilization of iron from different iron sources in primary cultured hepatocytes of broiler
Yun Hu1, Xuelian Ma2, Lin Lu2
1Mineral Nutrition Research Division, State Key Laboratory of Animal Nutrition, Chinese Academy of Agricultural Sciences, Beijing 100193, People's Republic of China; Poultry Mineral Nutrition Laboratory, College of Animal Science and Technology, Yangzhou University, Yangzhou 225000, People's Republic of China.
Abstract:
The present study was carried out to evaluate the effects of iron (Fe) sources and levels on the Fe concentration and expressions of iron-containing enzymes or protein in primary cultured hepatocytes of broiler embryos. The hepatocytes were incubated with 0, 0.25 and 0.50 mmol/L added Fe from either Fe sulfate, or 1 of 3 organic Fe chelates with weak (Fe-Met W), moderate (Fe-Pro M), or extremely strong (Fe-Pro ES) chelation strengths for 24 h. The results showed that all supplemental Fe treatments had higher (P < 0.05) Fe concentration, succinate dehydrogenase (SDH), CAT and ferritin heavy chain 1 (FTH1) mRNA levels than those in the control group. The hepatocytes incubated with Fe-Prot ES had lower (P < 0.009) Fe concentration than those incubated with Fe sulfate, Fe-Met W or Fe-Prot M. The SDH mRNA level was lower (P < 0.05) in Fe sulfate and Fe-Prot ES groups than in Fe-Prot M group. In conclusion, the Fe from Fe-Prot ES was less utilizable than Fe from Fe sulfate, Fe-Met W or Fe-Pro M in primary cultured hepatocytes of broiler embryos.
