在状细胞贫血中粘附分子的差异表达和肠道微生物组效应
Mariana Delgadinho1, Luísa Veiga1, Catarina Ginete1
1H&TRC - Health & Technology Research Center, ESTeSL - Escola Superior de Tecnologia da Saúde, Instituto Politécnico de Lisboa, Lisbon, Portugal.
Annals of hematology
|December 28, 2023
概括
在患有状细胞贫血 (SCA) 的儿童中,尿素治疗减少了与血管炎症相关的关键粘附分子. 这种治疗也改变了肠道微生物组的相关性,这表明SCA,肠道细菌和炎症标志物之间存在联系.
科学领域:
- 血液学 血液学 血液学
- 免疫学 免疫学 免疫学
- 微生物组研究 微生物组研究
背景情况:
- 细胞贫血 (SCA) 的特点是慢性血管炎症,内皮功能障碍和粘附分子过度表达,导致血管闭塞危机 (VOC).
- 挥发性有机物增加了对细菌转移和肠道失调的敏感性,使SCA管理复杂化.
- 已知素尿素 (HU) 可以减少SCA患者的VOC事件和器官损伤.
研究的目的:
- 研究粘附分子,肠道微生物组组成和氧尿素 (HU) 治疗对安哥拉SCA儿童的影响之间的复杂关系.
- 确定预测SCA并发症和分层患者风险的潜在生物标志物.
主要方法:
- 在HU治疗前后,从35名安哥拉患有SCA的儿童收集了血清和便样本.
- 测量了特定粘附分子的水平.
- 分析了肠道微生物组的组成.
- 评估了粘附分子,临床参数和微生物种群之间的相关性.
主要成果:
- HU治疗显著降低了四种粘附分子的血清水平:sE-selectin,ADAMTS13,sICAM-1和sVCAM-1.
- 在中性粒细胞/血小板和特定粘附分子 (sICAM-1,sP-selectin) 之间发现了正相关性.
- 在肠道微生物种群 (主要是Clostridiales) 和HbF水平,白细胞,中性粒细胞和粘附分子之间观察到显著的相关性. 塞拉提亚与sE-selectin和sICAM-1呈现正相关性,而Bifidobacterium与sP-selectin呈现负相关性.
结论:
- 在SCA儿童中,基尿素治疗有效地减少了与炎症相关的关键血管粘附分子.
- 在SCA患者中,肠道微生物组的组成与HU治疗反应和炎症标志物显著相关.
- 这些发现突显了针对肠道微生物组和监测粘附分子作为预后生物标志物的潜力,以改善SCA患者分层和管理.
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