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Changes in blood lymphocyte numbers with age in vivo and their association with the levels of cytokines/cytokine receptors.
Immunity & Ageing ( IF 7.9 ) Pub Date : 2016-08-23 , DOI: 10.1186/s12979-016-0079-7
Yun Lin 1 , Jiewan Kim 1 , E Jeffrey Metter 2, 3 , Huy Nguyen 1 , Thai Truong 1 , Ana Lustig 1 , Luigi Ferrucci 2 , Nan-Ping Weng 1
Affiliation  

BACKGROUND Alterations in the number and composition of lymphocytes and their subsets in blood are considered a hallmark of immune system aging. However, it is unknown whether the rates of change of lymphocytes are stable or change with age, or whether the inter-individual variations of lymphocyte composition are stable over time or undergo different rates of change at different ages. Here, we report a longitudinal analysis of T- and B-cells and their subsets, and NK cells in the blood of 165 subjects aged from 24 to 90 years, with each subject assessed at baseline and an average of 5.6 years follow-up. RESULTS The rates of change of T-(CD4(+) and CD8(+)) and B-cells, and NK cells were relative stable throughout the adult life. A great degree of individual variations in numbers of lymphocytes and their subsets and in the rates of their changes with age was observed. Among them, CD4(+) T cells exhibited the highest degree of individual variation followed by NK cells, CD8(+) T cells, and B cells. Different types of lymphocytes had distinct trends in their rates of change which did not appear to be influenced by CMV infection. Finally, the rates of CD4(+), CD8(+) T cells, naive CD4(+) and naïve CD8(+) T cells were closely positively correlated. CONCLUSION Our findings provide evidence that the age-associated changes in circulating lymphocytes were at relative stable rates in vivo in a highly individualized manner and the levels of selected cytokines/cytokine receptors in serum might influence these age-associated changes of lymphocytes in circulation.

中文翻译:

体内血液淋巴细胞数量随年龄的变化及其与细胞因子/细胞因子受体水平的关系。

背景技术淋巴细胞及其在血液中的亚群的数量和组成的改变被认为是免疫系统衰老的标志。然而,尚不清楚淋巴细胞的变化率是稳定的还是随年龄变化的,或者淋巴细胞组成的个体间变化是否随时间稳定或在不同年龄经历不同的变化率是未知的。在这里,我们报告了165位年龄在24至90岁之间的受试者的血液中T细胞和B细胞及其子集以及NK细胞的纵向分析,每个受试者均在基线时进行评估,平均随访5.6年。结果T-(CD4(+)和CD8(+))和B细胞以及NK细胞在整个成年期的变化率相对稳定。观察到淋巴细胞及其亚群的数量以及其随年龄的变化率有很大的个体差异。其中,CD4(+)T细胞表现出最高程度的个体变异,其次是NK细胞,CD8(+)T细胞和B细胞。不同类型的淋巴细胞的变化率具有明显的变化趋势,似乎不受CMV感染的影响。最后,CD4(+),CD8(+)T细胞,幼稚CD4(+)和幼稚CD8(+)T细胞的发生率密切相关。结论我们的发现提供了证据,表明循环淋巴细胞的年龄相关变化以高度个体化的方式在体内处于相对稳定的速率,并且血清中所选细胞因子/细胞因子受体的水平可能会影响循环中淋巴细胞的这些年龄相关变化。其中,CD4(+)T细胞表现出最高程度的个体变异,其次是NK细胞,CD8(+)T细胞和B细胞。不同类型的淋巴细胞的变化率具有明显的变化趋势,似乎不受CMV感染的影响。最后,CD4(+),CD8(+)T细胞,幼稚CD4(+)和幼稚CD8(+)T细胞的发生率密切相关。结论我们的发现提供了证据,表明循环淋巴细胞的年龄相关变化以高度个体化的方式在体内处于相对稳定的速率,并且血清中所选细胞因子/细胞因子受体的水平可能会影响循环中淋巴细胞的这些年龄相关变化。其中,CD4(+)T细胞表现出最高程度的个体变异,其次是NK细胞,CD8(+)T细胞和B细胞。不同类型的淋巴细胞的变化率具有明显的变化趋势,似乎不受CMV感染的影响。最后,CD4(+),CD8(+)T细胞,幼稚CD4(+)和幼稚CD8(+)T细胞的发生率密切相关。结论我们的发现提供了证据,表明循环淋巴细胞的年龄相关变化以高度个体化的方式在体内处于相对稳定的速率,并且血清中所选细胞因子/细胞因子受体的水平可能会影响循环中淋巴细胞的这些年龄相关变化。不同类型的淋巴细胞的变化率具有明显的变化趋势,似乎不受CMV感染的影响。最后,CD4(+),CD8(+)T细胞,幼稚CD4(+)和幼稚CD8(+)T细胞的发生率密切相关。结论我们的发现提供了证据,表明循环淋巴细胞的年龄相关变化以高度个体化的方式在体内处于相对稳定的速率,并且血清中所选细胞因子/细胞因子受体的水平可能会影响循环中淋巴细胞的这些年龄相关变化。不同类型的淋巴细胞的变化率具有明显的变化趋势,似乎不受CMV感染的影响。最后,CD4(+),CD8(+)T细胞,幼稚CD4(+)和幼稚CD8(+)T细胞的发生率密切相关。结论我们的发现提供了证据,表明循环淋巴细胞的年龄相关变化以高度个体化的方式在体内处于相对稳定的速率,并且血清中所选细胞因子/细胞因子受体的水平可能会影响循环中淋巴细胞的这些年龄相关变化。
更新日期:2019-11-01
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