中国组织工程研究 ›› 2025, Vol. 29 ›› Issue (25): 5390-5395.doi: 10.12307/2025.526

• 干细胞培养与分化 stem cell culture and differentiation • 上一篇    下一篇

低氧暴露后大鼠外周血及骨髓红系的变化

熊  华,李金杰,王  璐,马  婕   

  1. 青海大学附属医院(临床医学院),青海省西宁市   810001
  • 收稿日期:2024-04-01 接受日期:2024-07-05 出版日期:2025-09-08 发布日期:2024-12-25
  • 通讯作者: 马婕,博士,副主任医师,青海大学附属医院(临床医学院),青海省西宁市 810001
  • 作者简介:熊华,女,1981年生,青海省西宁市人,汉族,2017年青海大学毕业,硕士,副主任医师,主要从事血液恶性肿瘤及慢性高原病的研究。
  • 基金资助:
    青海省科技厅自然科学基金项目(2020-ZJ-956Q),项目负责人:马婕

Changes in peripheral blood and bone marrow erythroblasts in rats after hypoxic exposure

Xiong Hua, Li Jinjie, Wang Lu, Ma Jie   

  1. Qinghai University Affiliated Hospital (School of Clinical Medicine), Xining 810001, Qinghai Province, China
  • Received:2024-04-01 Accepted:2024-07-05 Online:2025-09-08 Published:2024-12-25
  • Contact: Ma Jie, MD, Associate chief physician, Qinghai University Affiliated Hospital (School of Clinical Medicine), Xining 810001, Qinghai Province, China
  • About author:Xiong Hua, Master, Associate chief physician, Qinghai University Affiliated Hospital (School of Clinical Medicine), Xining 810001, Qinghai Province, China
  • Supported by:
    Natural Science Foundation Project of Qinghai Science and Technology Department, No. 2020-ZJ-956Q (to MJ)

摘要:

文题释义:

红细胞系:循环中大量的红细胞构成了一个运输氧的器官,红系祖细胞和成熟红细胞共同组成此系统,称为红细胞系。
骨髓有核红细胞:存在于骨髓中,未脱去细胞核的、还未完全成熟的红细胞,包括原始红细胞、早幼红细胞、中幼红细胞和晚幼红细胞,能够增殖分化成红细胞。

摘要
背景:低氧暴露下大鼠外周血红细胞变化与骨髓有核红细胞增殖变化相关。低氧诱导因子、促红细胞生成素等相关调控因素参与其中。
目的:探讨大鼠低氧暴露后外周血红细胞及骨髓有核红细胞的变化特点及相关因素。
方法:模拟海拔5 000 m的低压低氧环境建立实验大鼠模型,对照组大鼠饲养在海拔2 260 m的实验室内,对比低氧暴露前后大鼠血常规、骨髓有核红细胞比例及低氧诱导因子、促红细胞生成素等相关指标。
结果与结论:①实验组大鼠外周血红细胞计数、血红蛋白、红细胞压积等指标较对照组升高(P < 0.05);②实验组大鼠骨髓CD71+有核红细胞比例较对照组升高(P < 0.05);③实验组大鼠骨髓CD71+有核红细胞中低氧诱导因子2α表达水平较对照组升高(P < 0.05);④实验组大鼠骨髓上清液促红细胞生成素水平较对照组升高(P < 0.05)。结果表明,低氧暴露后大鼠外周血红细胞及骨髓有核红细胞比例增高,可能与骨髓有核红细胞中低氧诱导因子2α及骨髓上清液中促红细胞生成素水平增高有关。

关键词: 低氧, 大鼠, 外周血, 红细胞, 骨髓, 有核红细胞

Abstract: BACKGROUND: The changes in peripheral blood erythrocytes of rats exposed to hypoxia are related to changes in proliferation of erythroblasts in the bone marrow. Related regulatory factors such as hypoxia-inducible factor and erythropoietin are involved.
OBJECTIVE: To explore the changes and related factors of peripheral blood erythrocytes and bone marrow erythroblasts in rats after hypoxic exposure.
METHODS: An altitude of 5 000 meters was simulated to establish an experimental rat model under a low-pressure and low-oxygen environment. The control group was raised in a laboratory at an altitude of 2 260 meters. The blood routine, bone marrow erythroblast ratio, hypoxia-inducible factor, and erythropoietin of rats were compared before and after hypoxic exposure.
RESULTS AND CONCLUSION: (1) The peripheral blood erythrocyte count, hemoglobin, hematocrit and other indicators of the experimental group rats were higher than those of the control group (P < 0.05). (2) The proportion of bone marrow CD71+ erythroblasts of the experimental group rats increased compared with the control group (P < 0.05). (3) The expression level of hypoxia-inducible factor-2α in bone marrow CD71+ erythroblasts of experimental group rats increased compared with the control group (P < 0.05). (4) The erythropoietin level in the bone marrow supernatant of the experimental group rats was higher than that of the control group (P < 0.05). The results indicate that the proportion of peripheral blood erythrocytes and bone marrow erythroblasts in rats increases after hypoxic exposure, which may be related to the increased levels of hypoxia-inducible factor-2α in bone marrow erythroblasts and erythropoietin in bone marrow supernatant.

Key words: hypoxia, rat, peripheral blood, erythrocyte, bone marrow, erythroblast

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