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Association of mitochondrial haplogroup J and mtDNA oxidative damage in two different North Spain elderly populations

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Abstract

This work investigates the association between longevity, mitochondrial DNA (mtDNA) variants and oxidative DNA damage in an older than 85 years population. The participants, similar in genetic and cultural background as well as gender distribution, come from villages near to the Pyrenees Mountains (900–1,400 m altitude) (n = 69) and the Ebro’s Valley (200–300 m altitude) (n = 69) in Spain. Our results show an accumulation of the haplogroup J in elderly individuals with an over-representation of J2 in Pyrenees group but not in the Ebro’s Valley, the former associating with a diminished DNA damage. In conclusion, our results suggest that J mitochondrial variant, that induce lower mtDNA damage, could present a phenotypic survival advantage to environmental conditions and, thus, accumulate in elderly population.

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Acknowledgments

This study was supported by grants from the Aragón General Goverment (Grupos Consolidados Group B33), Instituto de Salud Carlos III (ISCIII) (FIS-PI07-0045 and PI050647), CIBER for Rare Diseases is an initiative of ISCIII.

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Correspondence to Carmen Díez-Sánchez.

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Domínguez-Garrido, E., Martínez-Redondo, D., Martín-Ruiz, C. et al. Association of mitochondrial haplogroup J and mtDNA oxidative damage in two different North Spain elderly populations. Biogerontology 10, 435–442 (2009). https://doi.org/10.1007/s10522-008-9186-y

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  • DOI: https://doi.org/10.1007/s10522-008-9186-y

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