在患有状细胞疾病的儿童中,尽管脏功能障碍存在,但病原性红细胞的清除仍在维持
Abdoulaye Sissoko1, Astan Cissé1, Clémence Duverdier1
1Université Paris Cité, Inserm, BIGR, Paris, France.
American journal of hematology
|September 17, 2024
概括
状细胞疾病 (SCD) 儿童的脊髓切除术有助于急性危机,但有可能导致未来的并发症. 脏去除异常的红细胞 (RBC),这表明减少红细胞积累的治疗可以保持脏功能.
科学领域:
- 血液学 血液学 血液学
- 儿科医学 儿科医学
- 病理生理学 病理生理学
背景情况:
- 切除术可为患有状细胞疾病 (SCD) 的儿童急性封存危机和超 (ASSC/HyS) 提供立即缓解.
- 然而,切除术在这些患者中具有显著的长期阿斯普莱尼亚相关并发症风险.
- 了解脏在SCD中过异常红细胞中的作用,对于开发替代疗法至关重要.
研究的目的:
- 在患有状细胞疾病 (SCD) 的儿童中研究脏红细胞 (RBC) 的功能和形态特征.
- 为了比较从SCD患者的脏处理的红细胞与健康对照.
- 在SCD的背景下,评估脏过和清除异常红细胞的能力.
主要方法:
- 来自SCD儿童和接受脊髓切除术的对照对象的周围和红细胞 (RBC) 的分析.
- 人体脏与正常 (HbAA) 和状 (HbSS) 红细胞的活体输液.
- 使用了显微镜,模仿性红细胞过试验,粘附试验,免疫组织化学和传输电子显微镜 (TEM).
主要成果:
- 与对照人群相比,SCD儿童的脏显示出显著更高比例的异形,更硬和更粘附的红细胞.
- 由于含有聚合物和均的红细胞,SCD脏表现出增加的红细胞群密度,主要是在脏带,由于含有聚合物和均的红细胞.
- 活体透的脏表现出异常红细胞的类似拥堵和保留,由巨细胞减少含聚合物红细胞的细胞化.
结论:
- 尽管下,但SCD儿童的脏积极过并保留潜在的致病性改变的红细胞.
- 由异常红细胞保留驱动的脏拥堵是急性封存危机和超缩症 (ASSC/HyS) 中的主要致病过程.
- 减少红细胞保留的向治疗可以缓解脏拥堵,同时保持保护性脏功能,为脏切除提供替代方案.
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