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Effects of long-term exposure to an extremely low frequency magnetic field (15 µT) on selected blood coagulation variables in OF1 mice.
Electromagnetic Biology and Medicine ( IF 1.6 ) Pub Date : 2019-07-13 , DOI: 10.1080/15368378.2019.1641719
D Vallejo 1 , M A Hidalgo 2 , J M Hernández 1
Affiliation  

ABSTRACT The long-term exposure of OF1 mice to an extremely low frequency magnetic field (ELF-MF; 50 Hz, 15 µT [rms]) has been associated with the appearance of leukaemia. Neoplasms are usually accompanied by changes in haemostatic processes but reports on changes in blood coagulation following exposure to an ELF-MF are scarce and rather fragmentary. The aim of the present work was to determine whether any global or partial coagulation variables are modified after such long-term exposure. A parental generation of six week-old OF1 mice was exposed to an artificial ELF-MF for 14 weeks. Mating was then allowed, and the resulting filial generation raised until the age of 31–35 weeks within the same ELF-MF. Control animals were subjected only to the magnetic field of the Earth. Whole blood samples were extracted from the anesthetised filial generation of mice by cardiac puncture. White blood cells (WBC) were counted, the activated partial thromboplastin time (APTT) and prothrombin time (PT) determined, and plasma fibrinogen, reptilase time (RT), and factor VIII activity examined. The similarity between the results for the present control animals and those recorded in the literature for human blood render OF1 mice a suitable study model. The differences in the studied coagulation variables were largely owed simply to sex. However, the females showed a very significant shortening of the PT time associated with ELF-MF exposure. Exposure also caused significant increases in the female APTT and RT values, and in general reduced the differences between the sexes.

中文翻译:

长期暴露于极低频磁场 (15 µT) 对 OF1 小鼠选定凝血变量的影响。

摘要 OF1 小鼠长期暴露于极低频磁场(ELF-MF;50 Hz,15 µT [rms])与白血病的出现有关。肿瘤通常伴随着止血过程的变化,但关于暴露于 ELF-MF 后血液凝固变化的报道很少而且相当零碎。目前工作的目的是确定在这种长期暴露后是否有任何整体或部分凝血变量被修改。六周大的 OF1 小鼠的亲代暴露于人工 ELF-MF 下 14 周。然后允许交配,并且在相同的 ELF-MF 内,产生的后代会一直繁殖到 31-35 周龄。对照动物仅受到地球磁场的影响。通过心脏穿刺从麻醉的小鼠后代中提取全血样品。计数白细胞 (WBC),测定活化部分凝血活酶时间 (APTT) 和凝血酶原时间 (PT),并检查血浆纤维蛋白原、爬虫酶时间 (RT) 和因子 VIII 活性。本对照动物的结果与人类血液文献中记录的结果之间的相似性使 OF1 小鼠成为合适的研究模型。研究的凝血变量的差异主要归因于性别。然而,雌性表现出与 ELF-MF 暴露相关的 PT 时间的显着缩短。暴露还导致女性 APTT 和 RT 值显着增加,并且总体上减少了两性之间的差异。测定活化部分凝血活酶时间 (APTT) 和凝血酶原时间 (PT),并检查血浆纤维蛋白原、爬虫酶时间 (RT) 和因子 VIII 活性。本对照动物的结果与人类血液文献中记录的结果之间的相似性使 OF1 小鼠成为合适的研究模型。研究的凝血变量的差异主要归因于性别。然而,雌性表现出与 ELF-MF 暴露相关的 PT 时间的显着缩短。暴露还导致女性 APTT 和 RT 值显着增加,并且总体上减少了两性之间的差异。测定活化部分凝血活酶时间 (APTT) 和凝血酶原时间 (PT),并检查血浆纤维蛋白原、爬虫酶时间 (RT) 和因子 VIII 活性。本对照动物的结果与人类血液文献中记录的结果之间的相似性使 OF1 小鼠成为合适的研究模型。研究的凝血变量的差异主要归因于性别。然而,雌性表现出与 ELF-MF 暴露相关的 PT 时间的显着缩短。暴露还导致女性 APTT 和 RT 值显着增加,并且总体上减少了两性之间的差异。本对照动物的结果与人类血液文献中记录的结果之间的相似性使 OF1 小鼠成为合适的研究模型。研究的凝血变量的差异主要归因于性别。然而,雌性表现出与 ELF-MF 暴露相关的 PT 时间的显着缩短。暴露还导致女性 APTT 和 RT 值显着增加,并且总体上减少了两性之间的差异。本对照动物的结果与人类血液文献中记录的结果之间的相似性使 OF1 小鼠成为合适的研究模型。研究的凝血变量的差异主要归因于性别。然而,雌性表现出与 ELF-MF 暴露相关的 PT 时间的显着缩短。暴露还导致女性 APTT 和 RT 值显着增加,并且总体上减少了两性之间的差异。
更新日期:2019-07-13
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