中国组织工程研究 ›› 2018, Vol. 22 ›› Issue (33): 5368-5372.doi: 10.3969/j.issn.2095-4344.0642

• 干细胞基础实验 basic experiments of stem cells • 上一篇    下一篇

深低温冷冻保存血小板的最佳温度及时限

杨振宇1,李正发2,付凌梅1,朱祥明1   

  1. 1云南昆明血液中心,云南省昆明市 650106;2云南省第一人民医院,云南省昆明市 650000)
  • 修回日期:2018-05-31 出版日期:2018-11-28 发布日期:2018-11-28
  • 通讯作者: 李正发,教授,硕士生导师,云南省第一人民医院,云南省昆明市 650000
  • 作者简介:杨振宇,男,1979年生,云南省昆明市人,2017年昆明理工大学毕业,硕士,副主任技师,主要从事成分输血技术研究与管理。
  • 基金资助:

    云南省第一人民医院奥新基金项目(2014DS006)

Optimal temperature and storage time span for cryopreservation of platelets

Yang Zhen-yu1, Li Zheng-fa2, Fu Ling-mei1, Zhu Xiang-ming1   

  1. 1Yunnan Kunming Blood Center, Kunming 650106, Yunnan Province, China; 2the First People’s Hospital of Yunnan Province, Kunming 650000, Yunnan Province, China
  • Revised:2018-05-31 Online:2018-11-28 Published:2018-11-28
  • Contact: Li Zheng-fa, Professor, Master’s supervisor, the First People’s Hospital of Yunnan Province, Kunming 650000, Yunnan Province, China
  • About author:Yang Zhen-yu, Master, Associate chief technician, Yunnan Kunming Blood Center, Kunming 650106, Yunnan Province, China
  • Supported by:

    the Aoxin Foundation of Yunnan Provincial First People’s Hospital, No. 2014DS006

摘要:

文章快速阅读:

文题释义:
保存时限:
机采血小板常规保存时间最多为5 d,从献血员的招募、采集、检验等到供应临床需要两三天,也就是说,它的真正使用时间只有约2 d,如不能及时用于临床将造成过期浪费,因此临床上机采血小板供应比较紧张。冰冻血小板为临床血小板的使用提供了新的思路,也能有效解决这一矛盾。
保存温度:机采血小板的保存温度为(22±2) ℃,在这一温度下,最多只能保存5 d,且存在细菌污染的风险,程序降温、超低温(-179 ℃)液氮冻存细胞是维持细胞生物活性、功能的最理想方法,但不适合存量较大   (250 mL左右)的血小板冻存,因此-80 ℃深低温冰箱冻存是冰冻血小板较理想的保存方法。

 

摘要
背景:
临床对血小板的需求量急剧增加,新鲜液态血小板无法保障临床需求,特别是特殊血型、急诊患者和偏远地区的需求。
目的:探讨用5%二甲基亚砜深低温冰冻保存血小板的最佳保存温度、时限及复融后的最佳使用时间。
方法:选择16个机采血小板标本,对冰冻前及在-18 ℃、-40 ℃、-80 ℃冰冻保存1,3,6,12个月、冻融后即刻、冻融后1,2,4 h进行相关指标检测,包括血小板计数、平均血小板体积、血小板分布宽度、CD42b和CD62p表达。
结果与结论:①-80 ℃冰冻保存6个月血小板的CD62p表达、冰冻保存12个月血小板的CD42b、CD62p表达分别与冰冻前比较差异有显著性意义(P < 0.05);②-18 ℃、-40 ℃冰冻保存6个月血小板的CD42b、CD62p表达与-80 ℃相比差异均有显著性意义(P < 0.05);③-80 ℃冰冻保存6个月复融后4 h CD42b、CD62p表达与复融后即刻相比差异有显著性意义(P < 0.05);④结果表明5%二甲基亚砜冰冻保存血小板在越低的温度下保存越好;推荐保存条件为-80 ℃、6个月内;解冻后的最佳使用时间为2 h内。


中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程
ORCID:
0000-0002-2820-8562(杨振宇)

关键词: 血小板, 低温冰冻保存, 保存温度, 保存时限, 二甲基亚砜, 复融, CD42b, CD62p, 干细胞

Abstract:

BACKGROUND: Clinical demand of fresh liquid platelets cannot be guaranteed because of the rapid increase of the need of platelets, especially for the specific blood types, emergency patients and remote areas.
OBJECTIVE: To explore the optimal temperature and storage time span for deep cryopreservation of platelets in 5% dimethyl sulfoxide as well as the optimal usage time after melting of the frozen platelets.
METHODS: Sixteen platelet samples filtered by the machine were randomly selected. Indexes as blood platelet count, mean platelet volume, platelet distribution width, CD42b, CD62p were separately tested before and 1, 3, 6, 12 months after cryopreservation at three different temperatures of -18, -40, and -80 ℃ as well as immediately, 1, 2, 4 hours after melting.
RESULTS AND CONCLUSION: Significant changes were found in the expression of CD62p in the platelets at 6 and 12 months after cryopreservation at -80 ℃ and the expression of CD42b in the platelets at 6 months after cryopreservation at -80 ℃ (P < 0.05). The expression of CD42b and CD62p showed a significant difference in the platelets stored at -80 ℃ and at -18 and -40 ℃ for 6 months (P < 0.05). For the platelets stored at -80 ℃ for 6 months, the expression of CD42b and CD62p in the platelets at 4 hours after melting was significantly different from that immediately after melting (P < 0.05). These findings reveal that the lower temperature indicates the better cryopreservation of platelets using 5% dimethyl sulfoxide. The recommended storage conditions are -80 ℃ for 6 months; and the optimal usage time after melting is within 2 hours.


中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程

Key words: Blood Platelets, Cryopreservation, Dimethyl Sulfoxide, Tissue Engineering

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