Hb-vesicles (HbV) are artificial O2 carriers as a transfusion alternative. We examined the physiological capacity for the degradation of HbV by daily repeated infusions (DRI). Male Wistar rats intravenously received the HbV at 10 mL/kg/day for 14 consecutive days. One day after DRI, hepatosplenomegaly occurred significantly through the accumulation of large amounts of HbV. Plasma clinical chemistry was overall normal, except for a transient elevation of lipid components derived from HbV. These symptoms subsided 14 days after DRI. The plasma iron and bilirubin levels remained unchanged, suggesting that the heme-degrading capacity of the RES did not surpass the ability to eliminate bilirubin. Accordingly, Hb encapsulation would be beneficial for heme detoxification through their preferential delivery to the RES, a physiologic compartment for degradation of senescent RBCs, even at doses greater than putative clinical doses.
|出版ステータス||Published - 2005|
|イベント||54th SPSJ Annual Meeting 2005 - Yokohama, Japan|
継続期間: 2005 5月 25 → 2005 5月 27
|Conference||54th SPSJ Annual Meeting 2005|
|Period||05/5/25 → 05/5/27|
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