吉林大学学报(医学版) ›› 2023, Vol. 49 ›› Issue (5): 1174-1181.doi: 10.13481/j.1671-587X.20230510

• 基础研究 • 上一篇    

红景天苷对高原红细胞增多症模型大鼠骨髓CD71+有核红细胞凋亡的影响

郭勇1,王生艳2,易静静1,崔森3()   

  1. 1.青海大学研究生院,青海 西宁 810000
    2.青海卫生职业技术学院临床医学系,青海 西宁 810000
    3.青海大学附属医院血液科,青海 西宁 810000
  • 收稿日期:2022-11-04 出版日期:2023-09-28 发布日期:2023-10-26
  • 通讯作者: 崔森 E-mail:13897284366@139.com
  • 作者简介:郭 勇(1995-),男,山西省兴县人,在读硕士研究生,主要从事高原血液病基础和临床方面的研究。
  • 基金资助:
    青海省科技厅自然科学基金项目(2019-ZJ-902);青海省科技厅“高端创新人才千人计划”杰出人才培养项目〔青人才号(2017)5号〕

Effect of salidroside on apoptosis of CD71+ nucleated red blood cells in bone marrow in high altitude polycythemia model rats

Yong GUO1,Shengyan WANG2,Jingjing YI1,Sen CUI3()   

  1. 1.Graduate School,Qinghai University,Xining 810000,China
    2.Department of Clinical Medical Sciences,Qinghai Health Vocational and Technical College,Xining 810000,China
    3.Department of Hematology,Affiliated Hospital,Qinghai University,Xining 810000,China
  • Received:2022-11-04 Online:2023-09-28 Published:2023-10-26
  • Contact: Sen CUI E-mail:13897284366@139.com

摘要:

目的 探讨红景天苷对高原红细胞增多症(HAPC)模型大鼠骨髓CD71+有核红细胞(RBC)凋亡的影响,并阐明其作用机制。 方法 45只SD雄性大鼠随机分为对照组(海拔1 500 m条件+NaCl溶液)、模型组(海拔5 000 m条件+NaCl溶液)和药物组(海拔5 000 m条件+ 0.15 g·kg-1·d-1红景天苷),每组15只。检测各组大鼠血常规中RBC数、血红蛋白(Hb)水平和红细胞比容(HCT)水平,流式细胞术检测各组大鼠骨髓CD71+有核RBC百分率、骨髓CD71+有核RBC凋亡率、骨髓CD71+有核RBC中线粒体膜电位(MMP)和含半胱氨酸的天冬氨酸蛋白水解酶3(Caspase-3)蛋白表达水平,Western blotting法检测各组大鼠骨髓CD71+有核RBC中B细胞淋巴瘤2(Bcl-2)、Bcl-2相关X蛋白(Bax)和含半胱氨酸的天冬氨酸蛋白水解酶9(Caspase-9)蛋白表达水平。 结果 与对照组比较,模型组大鼠外周血中RBC数、Hb水平和HCT水平均升高(P<0.01),骨髓CD71+有核RBC百分率和骨髓CD71+有核RBC凋亡率升高(P<0.01),骨髓CD71+有核RBC中Bax、Caspase-9和Caspase-3蛋白表达水平升高(P<0.05)。与模型组比较,药物组大鼠外周血中骨髓CD71+有核RBC百分率均明显降低(P<0.01),骨髓CD71+有核RBC百分率和骨髓CD71+有核RBC凋亡率降低(P<0.01),骨髓CD71+有核RBC中MMP水平升高(P<0.05),Caspase-3、Bax和Caspase-9蛋白表达水平降低(P<0.01)。 结论 红景天苷可有效抑制HAPC大鼠骨髓有核RBC凋亡增加,并改善低氧引起的RBC过度积累,可能在大鼠HAPC发病过程起预防和保护作用。

关键词: 高原红细胞增多症, 红景天苷, 骨髓单个核细胞, 细胞凋亡, 红细胞

Abstract:

Objective To discuss the effect of salidroside on the apoptosis of the bone marrow CD71+ nucleated red blood cells(RBC) in the rat model of high altitude polycythemia (HAPC),and to clarify its mechanism. Methods orty-five male SD rats were randomly divided into control group (exposed to 1 500 m altitude + NaCl solution), model group (exposed to 5 000 m altitude + NaCl solution), and drug group (exposed to 5 000 m altitude + 0.15 g·kg-1·d-1 salidroside),and there were 15 rats in each group. The RBC counts, hemoglobin (Hb) levels, and hematocrit (HCT) levels of the rats in various groups were detected; flow cytometry was used to detect the percentages of bone marrow CD71+nucleated RBC, apoptotic rates of bone marrow CD71+nucleated RBC, levels of mitochondrial membrane potential (MMP) and expression levels of cysteinyl aspartate-specific protease-3 (Caspase-3) in bone marrow CD71+nucleated RBC of the rats in various groups; Western blotting method was used to detect the expression levels of B-cell lymphoma-2 (Bcl-2), Bcl2-associated X protein (Bax) ,and cysteinyl aspartate-specific protease-9 (Caspase-9) proteins in bone marrow CD71+nucleated RBC of the rats in various groups. Results Compared with control group, the RBC count, Hb level, HCT level of the rats in model group were increased (P<0.01), and the percentage and apoptotic rate of bone marrow CD71+nucleated RBC were increased (P<0.01), and the expression levels of Bax, Caspase-9, and Caspase-3 proteins in the bone marrow CD71+nucleated RBC were increased (P<0.05). Compared with model group, the percentage of bone marrow CD71+nucleated RBC of the rats in drug group was decreased (P<0.01), the apoptotic rate of bone marrow CD71+nucleated RBC(P<0.01), and the MMP level in the bone marrow CD71+nucleated RBC were increased (P<0.05), and the expression levels of Caspase-3, Bax, and Caspase-9 proteins in the bone marrow CD71+nucleated RBC were decreased (P<0.01). Conclusion Salidroside can effectively inhibit the increasing of apoptosis of nucleated RBC in bone marrow of the HAPC rats and improve the excessive accumulation of the RBC caused by hypoxia, which may have a certain preventive and protective effect in the pathogenesis of HAPC in the rats.

Key words: High altitude polycythemia, Salidroside, Bone marrow mononuclear cells, Apoptosis, Red blood cells

中图分类号: 

  • R551.3