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The development of haemoglobin-based oxygen carrier (HBOC) is an excellent supplement to pre-hospital emergency blood transfusions. In this study, a new type of HBOC was prepared by using human cord haemoglobin (HCHb) and glutaraldehyde (GDA) and Bis(3,5-dibromosalicyl) fumarate (DBBF) to modify (DBBF-GDA-HCHb), the changes of physicochemical indexes during its preparation were evaluated, while a traditional type of GDA-HCHb was prepared, and the oxygen-carrying capacity of two type of HBOC was evaluated by a rat model of 135.0% exchange transfusion (ET). Eighteen SD male rats were selected, and were randomly divided into control group (5.0% albumin), DBBF-GDA-HCHb group and GDA-HCHb group. The 12 h survival rate of the C group was 16.67%, and the two HBOC groups were both 83.33%. Compared with GDA-HCHb, DBBF-GDA-HCHb can reduce lactic acid content by supplying oxygen to hypoxic tissues in a more timely manner, and can also can improve the reduction of MAP due to ischaemia.

Preparation and exchange transfusion effect of a double polymerization human umbilical cord haemoglobin of red blood cell substitute