کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2169013 1092923 2009 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effects of pre-freeze incubation of human red blood cells with various sugars on postthaw recovery when using a dextran-rapid cooling protocol
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم کشاورزی و بیولوژیک (عمومی)
پیش نمایش صفحه اول مقاله
Effects of pre-freeze incubation of human red blood cells with various sugars on postthaw recovery when using a dextran-rapid cooling protocol
چکیده انگلیسی

Polymer has been used as substitute to replace glycerol for cryopreservation of red blood cells (RBCs). But polymer can not penetrate cell membrane, it can not efficiently protect the inner membrane. In this study, RBCs were incubated with glucose, fructose, galactose or trehalose and frozen in liquid nitrogen for 24 h using dextran as the extracellular protectant. The postthaw quality was assessed by RBC hemolysis, RBC morphology, PS distribution, osmotic fragility, and the 4 °C stability. The results indicated the loading efficiency of monosaccharide was significantly higher than that of trehalose. Adding trehalose and 40% dextran caused more serious hemolysis before freezing. The percent hemolysis of RBCs loaded with high concentration of trehalose was approximately 16% and significantly more than that of RBCs loaded with glucose (approximately 5%, P < 0.05). Intracellular trehalose can not increase the postthaw recovery of RBCs compared with cells frozen without sugar. However, low concentration of intracellular glucose or galactose can reduce the percent hemolysis to less than 5% and significantly less than that of RBCs frozen without sugar (P < 0.05). Finally, the ability of galactose or fructose to maintain the 4 °C stability was significantly more than that of glucose. In conclusion, the injuries caused by trehalose loading may directly lead to postthaw hemolysis and poor quality of RBCs. However, monosaccharide can enhance the recovery of frozen RBCs. The cryoprotective effect of galactose may be better than that of glucose or fructose. In the future, we will continue to look for a safe and efficient trehalose loading process and try to decrease the osmotic fragility of RBCs frozen with polymers and sugars.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cryobiology - Volume 59, Issue 3, December 2009, Pages 258–267
نویسندگان
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