Decay kinetics analysis of coagulation factors in cryoprecipitate under different storage temperatures
10.13303/j.cjbt.issn.1004-549x.2026.06.004
- VernacularTitle:不同保存温度下冷沉淀凝血因子的衰减动力学分析
- Author:
Mengling HAO
1
;
Mingyuan WANG
1
;
Qi XIAO
1
;
Yiming JIN
1
;
Min FANG
1
Author Information
1. Suzhou Blood Center, Suzhou 215006, China
- Publication Type:Journal Article
- Keywords:
cryoprecipitate;
coagulation factor Ⅷ;
von Willebrand factor;
temperature;
decay kinetics;
storage stability
- From:
Chinese Journal of Blood Transfusion
2026;39(6):724-733
- CountryChina
- Language:Chinese
-
Abstract:
Objective: To systematically analyze the stability and decay kinetics of coagulation factors in thawed cryoprecipitate stored at different temperatures under the new storage guidelines, and to provide an evidence basis for optimizing storage strategies. Methods: A total of 30 bags of 2U cryoprecipitate prepared at our blood center from January to June 2025 were selected. After thawing in a 37℃ water bath and thorough mixing, each bag was equally divided into two portions and stored at room temperature (20-24℃) or under refrigerated temperature (2~6℃), respectively. Dynamic sampling was performed at 0, 4, 6, 24, 30, and 120 h after thawing to measure fibrinogen (FIB) content, coagulation factor Ⅷ(FⅧ) activity, and von Willebrand factor (vWF) activity. Two-way repeated measures ANOVA was used to evaluate the effects of storage temperature, time, and their interaction. A one-phase exponential decay model was applied to fit the decay kinetics of FⅧ activity and vWF activity. Results: After thawing, FⅧ activity and vWF activity in cryoprecipitate showed a decreasing trend with prolonged storage time, and a time×temperature interaction was observed for both factors (all P< 0.001). The decay rates of FⅧ activity and vWF activity were lower under room temperature storage than under refrigerated storage, with statistically significant differences between the two groups starting from 24 h. Kinetic fitting revealed that the half-life of FⅧ activity in the room temperature group (19.83 h) was 3.4 times longer than that in the refrigerated group (5.85 h); the half-life of vWF activity in the room temperature group (204.6 h) was 5.9 times longer than that in the refrigerated group (34.6 h). FIB content remained stable throughout the observation period under both storage temperatures, with no statistically significant differences. Conclusion: Storage of thawed cryoprecipitate at room temperature effectively delays the loss of FⅧ activity and vWF activity and reduces cryoprecipitate formation induced by low temperature, providing experimental evidence for optimizing transfusion strategies based on the decay kinetics of different coagulation factors and improving the utilization efficiency of cryoprecipitate resources.
