Osmotic Indices and Thromboplastic Activity of Erythrocytes After Freeze-Thawing in Combined Media

Authors

  • Viktor V. Ramazanov Institute for Problems of Cryobiology and Cryomedicine of the National Academy of Sciences of Ukraine, Kharkiv
  • Elizaveta L. Volovelskaya Institute for Problems of Cryobiology and Cryomedicine of the National Academy of Sciences of Ukraine, Kharkiv
  • Valeriy A. Bondarenko Institute for Problems of Cryobiology and Cryomedicine of the National Academy of Sciences of Ukraine, Kharkiv

DOI:

https://doi.org/10.15407/cryo26.03.229

Keywords:

erythrocytes, freezing, cryopreservation, combined cryopreservatives, dextran, polyethylene glycol, 1, 2-propane diol, coagulation

Abstract

Here we studied the osmotic indices of human erythrocytes, frozen in the media with polymers (dextran, polyethylene glycol 1500), in combined media with polymer and penetrating cryoprotectant (1,2-propanediol), as well as their effect on blood plasma clotting time. During erythrocyte freezing in the media with polymers there were demonstrated their disordered osmotic characteristics, in this case they were spherocyte-shaped and spheroechinocyte-shaped if supplementing the medium with albumin. The erythrocytes, which survived after freezing accelerated plasma clotting in a greater extent as compared to the intact cells. Those frozen in combined media were slightly different by osmotic characteristics from the intact cells, being represented by sphero-echinocytes, but discocytes and stomatocytes under albumin effect. The erythrocytes survived freeze-thawing  accelerated plasma clotting, like those, frozen in the media with polymers. Our findings have suggested the erythrocyte freezing in the media with polymers to cause the elimination of asymmetric distribution of phosphatidylserine molecules, transiting onto an outer surface of cell membranes, thereby causing spherocytosis and strengthening a thromboplastic activity of erythrocytes. Erythrocyte freezing in combined media resulted in a partial migration of phosphatidylserine onto an outer side of membrane, and that was sufficient for pronounced strengthening of thromboplastic activity of cells with preserving their osmotic indices.

 

Probl Cryobiol Cryomed 2016; 26(3): 229–237

Author Biographies

Viktor V. Ramazanov, Institute for Problems of Cryobiology and Cryomedicine of the National Academy of Sciences of Ukraine, Kharkiv

Department of Cryocytology

Elizaveta L. Volovelskaya, Institute for Problems of Cryobiology and Cryomedicine of the National Academy of Sciences of Ukraine, Kharkiv

Department of Cryocytology

Valeriy A. Bondarenko, Institute for Problems of Cryobiology and Cryomedicine of the National Academy of Sciences of Ukraine, Kharkiv

Department of Cryocytology

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Published

2016-09-23

How to Cite

Ramazanov, V. V., Volovelskaya, E. L., & Bondarenko, V. A. (2016). Osmotic Indices and Thromboplastic Activity of Erythrocytes After Freeze-Thawing in Combined Media. Problems of Cryobiology and Cryomedicine, 26(3), 229–237. https://doi.org/10.15407/cryo26.03.229

Issue

Section

Theoretical and Experimental Cryobiology