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首页> 外文期刊>The journals of gerontology.Series A. Biological sciences and medical sciences >Aging is not associated with bone marrow-resident progenitor cell depletion.
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Aging is not associated with bone marrow-resident progenitor cell depletion.

机译:衰老与骨髓驻留祖细胞耗竭无关。

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摘要

Changes in progenitor cell biology remain at the forefront of many theories of biologic aging, but there are limited studies evaluating this in humans. Aging has been associated with a progressive depletion of circulating progenitor cells, but age-related bone marrow-resident progenitor cell depletion has not been systematically determined in humans. Patients undergoing total hip replacement were consented, and bone marrow and peripheral progenitor cells were enumerated based on aldehyde dehydrogenase activity and CD34 and CD133 expression. Circulating progenitors demonstrated an age-dependent decline. In contrast, marrow-resident progenitor cell content demonstrated no age association with any progenitor cell subtype. In humans, aging is associated with depletion of circulating, but not marrow-resident, progenitors. This finding has impact on the mechanism(s) responsible for age-related changes in circulating stem cells and important implications for the use of autologous marrow for the treatment of age-related diseases.
机译:祖细胞生物学的变化仍然是许多生物衰老理论的最前沿,但是在人类中评估这种情况的研究很少。衰老与循环祖细胞的逐渐耗竭有关,但是与衰老有关的骨髓驻留祖细胞耗竭尚未在人类中系统地确定。同意接受全髋关节置换术的患者,并根据醛脱氢酶活性以及CD34和CD133表达对骨髓和外周祖细胞进行计数。循环祖细胞显示出年龄依赖性下降。相反,骨髓祖细胞含量与任何祖细胞亚型均无年龄相关性。在人类中,衰老与循环祖细胞的消耗有关,而与骨髓祖细胞无关。这一发现对负责循环干细胞中与年龄相关的变化的机制有影响,并且对使用自体骨髓治疗与年龄相关的疾病具有重要意义。

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