Salvage of focal cerebral ischemic damage by transfusion of high O2-affinity recombinant hemoglobin polymers in mouse.
Salvage of focal cerebral ischemic damage by transfusion of high O2-affinity recombinant hemoglobin polymers in mouse.
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通过向小鼠输注高 O2 亲和力重组血红蛋白聚合物来挽救局灶性脑缺血损伤。
DOI:
10.1152/japplphysiol.01374.2005
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发表时间:
2006
期刊:
影响因子:
--
通讯作者:
Koehler,RaymondC
中科院分区:
文献类型:
--
作者:
Nemoto,Masaaki;Mito,Toshiaki;Brinigar,WilliamS;Fronticelli,Clara;Koehler,RaymondC
Cell-free hemoglobin solutions with high oxygen affinity might be beneficial for selectively delivering oxygen to ischemic tissue. A recombinant hybrid hemoglobin molecule was designed using the human α-subunit and the bovine β-subunit, with placement of surface cysteines to permit disulfide bond polymerization of the tetramers. The resulting protein generated from anEscherichia coliexpression system had a molecular mass >1 MDa, a P50of ∼3 Torr, and a cooperativity ofn= 1.0. Anesthetized mice were transfused during 2-h occlusion of the middle cerebral artery. Compared with transfusion with 5% albumin, cerebral infarct volume was reduced by 41% with transfusion of a 3% solution of the high oxygen-affinity hemoglobin polymer and by 50% with transfusion of a 6% solution of the polymer. Transfusion of a 6% solution of a 500-kDa polymer possessing a P50of 17 Torr and a cooperativity ofn= 2.0 resulted in a 66% reduction of infarct volume. These results indicate that cell-free Hb polymers with P50values much lower than that of red blood cell hemoglobin are highly capable of salvaging ischemic brain. The assumption that the P50of blood substitutes should be similar to that of blood might not be warranted when used during ischemic conditions.
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影响因子:
14.9
作者:
P. Burgers
通讯作者:
P. Burgers
DOI:
--
发表时间:
1988
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Bauer,GA;Heller,HM;Burgers,PM
通讯作者:
Burgers,PM
影响因子:
2.9
作者:
So,AG;Downey,KM
通讯作者:
Downey,KM
DOI:
10.3109/10409238.2011.609295
发表时间:
2011-10
影响因子:
6.5
作者:
Horvath MP
通讯作者:
Horvath MP
DOI:
10.1016/s0021-9258(18)67240-0
发表时间:
1986-09
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
C. Tan;C. Castillo;A. So;K. Downey
通讯作者:
C. Tan;C. Castillo;A. So;K. Downey