对不同年龄组的正常血细胞分布的分析揭示了年龄相关的变化
Denise K Walters1, Diane F Jelinek1
1Department of Immunology, College of Medicine and Science, Mayo Clinic, Rochester, MN and Scottsdale, AZ.
概括
血细胞 (PC) 集群存在于人类骨髓 (BM). PC聚类随着年龄的增长而增加,直到中年成人之前下降,这表明BM stromal细胞的与年龄相关的变化.
科学领域:
- 血液学 血液学 血液学
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
背景情况:
- 骨髓 (BM) 含有造血细胞和 stromal 细胞,对于血细胞 (PC) 存活至关重要.
- 之前在小鼠身上进行的研究表明,在BM中PC集群的动态形成和分散.
- 在正常人BM中PC聚类尚未得到广泛的研究.
研究的目的:
- 调查人类BM中PC集群的存在.
- 为了确定PC集群模式是否随着年龄的增长而变化.
- 探索PC数量,集群和年龄之间的关系.
主要方法:
- 在人类BM部分中PCs和PC集群的量化.
- 在六个不同的年龄组进行了分析.
- 在PC集群中评估免疫球蛋白重链和轻链表达.
主要成果:
- 在人类的BM中观察到PC集群.
- 在最年轻和最年长的年龄组中,PC数量和集群数量最低.
- PC集群在第六个十年达到顶峰,随后下降.
- 在所有年龄段的PC数量和PC集群数量之间存在正相关性.
- PC集群在免疫球蛋白表达方面表现出异质性.
结论:
- PC 集群是正常人BM的一个特征.
- 个人电脑集群的动态取决于年龄,增加到中年,然后下降.
- 随着年龄的变化,BM stromal 细胞的空间分布可能会影响PC 聚类.
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