Biophysical properties and oxygenation potential of high-molecular-weight glutaraldehyde-polymerized human hemoglobins maintained in the tense and relaxed quaternary states.
Biophysical properties and oxygenation potential of high-molecular-weight glutaraldehyde-polymerized human hemoglobins maintained in the tense and relaxed quaternary states.
复制标题
高分子量戊二醛聚合的人血红蛋白在紧张和松弛四元状态下的生物物理特性和氧合潜力。
DOI:
10.1089/ten.tea.2010.0353
复制
发表时间:
2011
影响因子:
--
通讯作者:
Palmer,AndreF
中科院分区:
文献类型:
--
作者:
Zhang,Ning;Jia,Yiping;Chen,Guo;Cabrales,Pedro;Palmer,AndreF
Recent clinical evaluation of commercial glutaraldehyde-polymerized hemoglobins (PolyHbs) as transfusion solutions has demonstrated several adverse side effects. Chief among these is the hypertensive effect. Fortunately, previous studies have shown that the hypertensive effect can be attenuated by removing free hemoglobin (Hb) and low-molecular-weight (low-MW) PolyHbs from the PolyHb mixture. In this work, polymerized human Hb (PolyhHb) solutions were synthesized in two distinct quaternary states with high MW and subjected to extensive diafiltration to remove free Hb and low-MW PolyhHb components (<500 kDa). The resultant PolyhHb solutions possessed high MW, distinct quaternary state, distinct reactivities with O2and CO, similar NO deoxygenating rate constants, distinct autoxidation rate constants, high viscosity, and low colloid osmotic pressure. To preliminarily assess the ability of PolyhHb solutions to oxygenate surrounding tissues fed by a blood vessel, we evaluated the ability of PolyhHbs to transport O2to cultured hepatocytes in a mathematical model of a hollow fiber bioreactor. The structure of individual hollow fibers in the bioreactor is similar to that of a blood vessel and provides an easy way to assess the oxygenation potential of PolyhHbs without the need for expensive and time-consuming animal studies. It was observed that PolyhHbs with low O2affinities were more effective in oxygenating cultured hepatocytes inside the bioreactor than high O2affinity PolyhHbs. Taken together, our results show that it is possible to synthesize high-MW PolyhHbs with no free Hb and low-MW PolyhHb components that are capable of transporting O2to cultured cells/tissues.
登录
查看更多内容
影响因子:
4.5
作者:
M. Goldman
通讯作者:
M. Goldman
影响因子:
6
作者:
Levy, JH;Goodnough, LT;Vlahakes, GJ
通讯作者:
Vlahakes, GJ
DOI:
10.1152/ajpheart.00751.2008
发表时间:
2008-11-01
影响因子:
4.8
作者:
Cabrales, Pedro;Tsai, Amy G.;Intaglietta, Marcos
通讯作者:
Intaglietta, Marcos
DOI:
10.1016/j.bbapap.2009.04.008
发表时间:
2009
期刊:
Biochimica et biophysica acta
影响因子:
--
作者:
Yiping Jia;A. Alayash
通讯作者:
A. Alayash
影响因子:
8.8
作者:
M. Lamy;E. Daily;J. Brichant;R. Larbuisson;R. Demeyere;E. Vandermeersch;J. Lehot;M. Parsloe;J. Berridge;C. J. Sinclair;J. Baron;R. Przybelski
通讯作者:
R. Przybelski