期刊
TRENDS IN BIOTECHNOLOGY
卷 32, 期 4, 页码 177-185出版社
ELSEVIER SCIENCE LONDON
DOI: 10.1016/j.tibtech.2014.02.006
关键词
Blood substitutes; Hemoglobin; Heme; Oxidative toxicity
资金
- National Institutes of Health (NIH) [HL110900]
- U.S. Food and Drug Administration (MODSCI)
Persistent safety concerns have stalled the development of viable hemoglobin (Hb)-based oxygen carriers (HBOCs). HBOCs have several advantages over human blood, including availability, long-term storage, and lack of infectious risk. The basis of HBOC toxicity is poorly understood, however, several mechanisms have been suggested, including Hb extravasation across the blood vessel wall, scavenging of endothelial nitric oxide (NO), oversupply of oxygen, and heme-mediated oxidative side reactions. Although there are some in vitro and limited animal studies supporting these mechanisms, heme-mediated reactivity appears to provide an alternative path that can explain some of the observed pathophysiological changes. Moreover, recent mechanistic and animal studies support a role for globin and heme scavengers in controlling oxidative toxicity associated with Hb infusion.
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