منابع مشابه
Involvement of oxidatively damaged DNA and repair in cancer development and aging.
DNA damage and DNA repair may mediate several cellular processes, like replication and transcription, mutagenesis and apoptosis and thus may be important factors in the development and pathology of an organism, including cancer. DNA is constantly damaged by reactive oxygen species (ROS) and reactive nitrogen species (RNS) directly and also by products of lipid peroxidation (LPO), which form exo...
متن کاملOxidatively damaged DNA in aging dyslipidemic ApoE-/- and wild-type mice.
The free radical theory of aging depicts an accumulation of cellular oxidatively damaged DNA. In this study, we investigated this theory in mice with knocked-out apolipoprotein E gene (ApoE(-/-)), which develops atherosclerosis and wild-type counterparts. The level of oxidatively damaged DNA was investigated as strand breaks, endonuclease III- and formamidopyrimidine DNA glycosylase-sensitive s...
متن کاملDamaged DNA in lymphocytes of aplastic anemia.
The size of single-stranded DNA in lymphocytes in GO stage from 22 patients with acquired primary and secondary aplastic anemia was estimated by alkaline sucrose gradient centrifugation. The average size was 9.3 (+/-0.3) times 10(7) daltons. The lymphocytes of patients contained significantly more single-strand breaks in DNA, compared to those of normal persons. The difference in size of single...
متن کاملSliding to the rescue of damaged DNA
Single-molecule imaging experiments have shed new light on the methods used by the enzyme RecA to align single- and double-stranded DNA so that double-strand breaks can be repaired.
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ژورنال
عنوان ژورنال: Aging
سال: 2019
ISSN: 1945-4589
DOI: 10.18632/aging.102340