The Molecular Size of Bioengineered Oxygen Carriers Determines Tissue Oxygenation in a Hypercholesterolemia Guinea Pig Model of Hemorrhagic Shock and Resuscitation

被引:2
作者
Lamb, Derek R. [1 ]
Greenfield, Alisyn [2 ]
Thangaraju, Kiruphagaran [1 ]
Setua, Saini [1 ]
Eiker, Gena [1 ]
Wang, Qihong [1 ]
Vahedi, Amid [2 ]
Khan, Mohd. Asim [2 ]
Yahya, Ahmad [2 ]
Cabrales, Pedro [3 ]
Palmer, Andre F. [2 ]
Buehler, Paul W. [1 ,4 ]
机构
[1] Univ Maryland, Ctr Blood Oxygen Transport & Hemostasis, Sch Med, Dept Pediat, Baltimore, MD 21202 USA
[2] Ohio State Univ, William G Lowrie Dept Chem & Biomol Engn, Columbus, OH 43210 USA
[3] Univ Calif San Diego, Dept Bioengn, La Jolla, CA 92093 USA
[4] Univ Maryland, Sch Med, Dept Pathol, Baltimore, MD 21201 USA
基金
美国国家卫生研究院;
关键词
oxygen carries; polymerized hemoglobin; hemorrhagicshock; hypercholesteremia; tissue oxygenation; NITRIC-OXIDE; BLOOD SUBSTITUTES; KIDNEY INJURY; IN-VITRO; HEMOGLOBIN; VISCOSITY; TRANSFUSION; DIFFUSION; KIM-1; RAT;
D O I
10.1021/acs.molpharmaceut.3c00611
中图分类号
R-3 [医学研究方法]; R3 [基础医学];
学科分类号
1001 ;
摘要
Polymerized human hemoglobin (PolyhHb) has shown promise in preclinical hemorrhagic shock settings. Different synthetic and purification schemes can control the size of PolyhHbs, yet research is lacking on the impact of polymerized hemoglobin size on tissue oxygenation following hemorrhage and resuscitation in specialized animal models that challenge their resuscitative capabilities. Pre-existing conditions that compromise the vasculature and end organs, such as the liver, may limit the effectiveness of resuscitation and exacerbate the toxicity of these molecules, which is an important but minimally explored therapeutic dimension. In this study, we compared the effective oxygen delivery of intermediate molecular weight PolyhHb (PolyhHb-B3; 500-750 kDa) to high molecular weight PolyhHb (PolyhHb-B4; 750 kDa-0.2 mu m) for resuscitative effectiveness in guinea pig models subjected to hemorrhagic shock. We evaluated how the size of PolyhHb impacts hemodynamics and tissue oxygenation in normal guinea pigs and guinea pigs on an atherogenic diet. We observed that while PolyhHb-B3 and -B4 equivalently restore hemodynamic parameters of normal-dieted guinea pigs, high-fat-dieted guinea pigs resuscitated with PolyhHb-B4 have lower mean arterial pressures, impaired tissue oxygenation, and higher plasma lactate levels than those receiving PolyhHb-B3. We characterized the plasma of these animals following resuscitation and found that despite similar oxygen delivery kinetics, circulating PolyhHb-B3 and -B4 demonstrated a size-dependent increase in the plasma viscosity, consistent with impaired perfusion in the PolyhHb-B4 transfusion group. We conclude that intermediate-sized PolyhHbs (such as -B3) are ideal for further research given the effective resuscitation of hemorrhagic shock based on tissue oxygenation in hypercholesterolemic guinea pigs.
引用
收藏
页码:5739 / 5752
页数:14
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