age-related disease association of endogenous γ-h2ax foci in mononuclear cells derived from leukapheresis与年龄相关的疾病协会的内生在单核细胞来源于leukapheresisγ-h2ax疫源地.pdfVIP

age-related disease association of endogenous γ-h2ax foci in mononuclear cells derived from leukapheresis与年龄相关的疾病协会的内生在单核细胞来源于leukapheresisγ-h2ax疫源地.pdf

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age-related disease association of endogenous γ-h2ax foci in mononuclear cells derived from leukapheresis与年龄相关的疾病协会的内生在单核细胞来源于leukapheresisγ-h2ax疫源地

Age-Related Disease Association of Endogenous c-H2AX Foci in Mononuclear Cells Derived from Leukapheresis 1 1 1¤ 2 3 Shepherd H. Schurman , Christopher A. Dunn , Rebecca Greaves , Binbing Yu , Luigi Ferrucci , 1 1 1 Deborah L. Croteau , Michael M. Seidman , Vilhelm A. Bohr * 1 Laboratory of Molecular Gerontology, National Institute on Aging, National Institutes of Health, Baltimore, Maryland, United States of America, 2 Laboratory of Epidemiology, Demography and Biometry, National Institute on Aging, National Institutes of Health, Baltimore, Maryland, United States of America, 3 Clinical Research Branch, National Institute on Aging, National Institutes of Health, Baltimore, Maryland, United States of America Abstract The phosphorylated form of histone H2AX (c-H2AX) forms immunohistochemically detectable foci at DNA double strand breaks. In peripheral blood mononuclear cells (PBMCs) derived from leukapheresis from patients enrolled in the Baltimore Longitudinal Study of Aging, c-H2AX foci increased in a linear fashion with regards to age, peaking at ,57 years. The relationship between the frequency of c-H2AX foci and age-related pathologies was assessed. We found a statistically significant (p = 0.023) 50% increase in foci in PBMCs derived from patients with a known history of vitamin D deficiency. In addition, there were trends toward increased c-H2AX foci in patients with cataracts (34% increase, p ,0.10) and in sleep apnea patients (44%, p ,0.10). Among patients $57 y/o, we found a significant (p = 0.037) 36% increase in the number of c- H2AX foci/cell for patients with

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