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Content with tag telomere length .

A CSIC study suggests that the tissues of our body do not age at the same speed

Analysis of telomeres, markers of ageing, shows that the process of deterioration occurs unevenly in different parts of the body. The ageing of organisms is due to the loss of function of some of the body's organs and involves cardiovascular diseases or the development of cancers. The next steps would include manipulating telomere length in different tissues and seeing if this implies changes in the function of different body parts.

Avian scavengers living in anthropized landscapes and dense populations have chronic stress and accelerated cell aging

A study led by the Doñana Biological Estation (CSIC) has compared the health of two populations of griffon vultures (Gyps fulvus) from two populations of the Iberian Peninsula. The research team concludes that vultures have higher stress and cell aging levels in northern areas, more anthropized and densely populated

Vitamin E supplementation—but not induced oxidative stress—influences telomere dynamics during early development in wild passerines

Telomere length is a marker of cellular senescence that relates to different components of individual fitness. Oxidative stress is often claimed as a main proximate factor contributing to telomere attrition, although the importance of this factor in vivo has recently been challenged.

Urban blackbirds have shorter telomeres

Urbanization, one of the most extreme human-induced environmental changes, represents a major challenge for many organisms. Anthropogenic habitats can have opposing effects on different fitness components, for example, by decreasing starvation risk but also health status. Telomere length is a promising candidate for examining the effects of urbanization on the health status of individuals. Here, telomere length difference between urban and forest-dwelling common blackbirds is investigated.

Physiological mechanisms of adaptive developmental plasticity in Rana temporaria island populations

Adaptive plasticity is essential for many species to cope with environmental heterogeneity. In particular, developmental plasticity allows organisms with complex life cycles to adaptively adjust the timing of ontogenetic switch points. In this study, the physiological mechanisms underlying divergent degrees of developmental plasticity across Rana temporaria island populations inhabiting different types of pools in northern Sweden is investigated.