PMID- 18946734 OWN - NLM STAT- MEDLINE DCOM- 20090219 LR - 20181113 IS - 1573-6903 (Electronic) IS - 0364-3190 (Linking) VI - 33 IP - 12 DP - 2008 Dec TI - Localization of abasic sites and single-strand breaks in mitochondrial DNA from brain of aged rat, treated or not with caloric restriction diet. PG - 2609-14 LID - 10.1007/s11064-008-9866-7 [doi] AB - According to the "mitochondrial theory of aging" the lifelong accumulation of various kinds of damage to mitochondrial DNA (mtDNA) has been related to the age-dependent mitochondrial bioenergetic dysfunction. Caloric restriction (CR) diet is able to prevent or delay the onset of several age-related damages to mtDNA. The effects of aging and CR on the presence of abasic sites and single-strand breaks of the sugar-phosphate backbone in mtDNA have been analyzed by applying Ligation Mediated-PCR to a H strand region of brain mtDNA from young and old ad libitum-fed and old CR-treated rats. The region, encompassing the Direct Repeat 1 of the 4,834 bp-long deletion, is highly damaged in the old ad libitum-fed animals with respect to the young ones, whereas in the CR rats it shows a much lower extent of damage. The data confirm, at single nucleotide resolution, the protective effect of CR on the age-related mtDNA damage. FAU - Lezza, A M S AU - Lezza AM AD - Department of Biochemistry and Molecular Biology Ernesto Quagliariello, University of Bari, Via Orabona, 4, 70125, Bari, Italy. FAU - Fallacara, F P AU - Fallacara FP FAU - Pesce, V AU - Pesce V FAU - Leeuwenburgh, C AU - Leeuwenburgh C FAU - Cantatore, P AU - Cantatore P FAU - Gadaleta, M N AU - Gadaleta MN LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20081023 PL - United States TA - Neurochem Res JT - Neurochemical research JID - 7613461 RN - 0 (DNA Primers) RN - 0 (DNA, Single-Stranded) SB - IM MH - Aging/*metabolism MH - Animals MH - Autoradiography MH - Base Sequence MH - Brain/*metabolism MH - *Caloric Restriction MH - *DNA Damage MH - DNA Primers MH - DNA, Single-Stranded/*metabolism MH - Male MH - Polymerase Chain Reaction MH - Rats MH - Rats, Inbred F344 EDAT- 2008/10/24 09:00 MHDA- 2009/02/20 09:00 CRDT- 2008/10/24 09:00 PHST- 2008/05/30 00:00 [received] PHST- 2008/10/03 00:00 [accepted] PHST- 2008/10/24 09:00 [pubmed] PHST- 2009/02/20 09:00 [medline] PHST- 2008/10/24 09:00 [entrez] AID - 10.1007/s11064-008-9866-7 [doi] PST - ppublish SO - Neurochem Res. 2008 Dec;33(12):2609-14. doi: 10.1007/s11064-008-9866-7. Epub 2008 Oct 23.