期刊
ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY
卷 46, 期 -, 页码 S621-S629出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/21691401.2018.1505740
关键词
Blood substitute; oxygen carrier; blood compatibility; hemodilution; circulation lifetime
资金
- JSPS [18K19007]
- Institute of Science and Engineering, Chuo University
- Naito Foundation
- Grants-in-Aid for Scientific Research [18K19007] Funding Source: KAKEN
A core-shell protein cluster comprising hemoglobin and human serum albumins, hemoglobin-albumin cluster (Hb-HSA(3)), was designed and synthesized for use as an artificial O-2 carrier and red blood cell (RBC) substitute. For initial preclinical safety evaluation of the Hb-HSA(3) solution, we observed blood compatibility in vitro, physiological responses after exchange transfusion into rats and blood circulation lifetime in dogs. Dilution of human whole blood with Hb-HSA(3) showed an appropriate decrease in blood cell number, proportional to the mixing volume ratio. Time courses in the circulation parameters and blood gas parameters after 20% exchange transfusion with Hb-HSA(3) in anesthetized rats were almost identical to those observed in a sham group (without infusion) and an HSA group (with HSA administration) for 6 h. Serum biochemical tests of the withdrawn blood indicated safety of the protein cluster. Furthermore, fluorescent Hb-HSA(3) was infused into beagle dogs to assess blood retention. Fluorescence measurements of the blood samples enabled us to ascertain the cluster half-life within the intravascular space. Histopathologic inspections of the vital organs imply no abnormality in tissues. All these results indicate sufficient initial preclinical safety of Hb-HSA(3) as an alternative material for use in RBC transfusion.
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