Rejuvenating tithonus.

Morphological and biological observations on the stick insect Tithonophasma tithonus (Gray, 1835) (Phasmida: Pseudophasmatidae: Pseudophasmatinae).

American Pseudophasmatinae stick insects are often colorful, winged or apterous, with or without scale-shaped tegmina, with an area apicalis on all tibiae, and either with a ventromedian carina on the meso and metafemora, or with broad profemora, as long as head, proand mesonotum combined (Zompro, 2004). In the egg, micropylar plate is externally located in the middle of the dorsal surface, and...

Rapamycin, anti-aging, and avoiding the fate of Tithonus.

The discovery that rapamycin increased the lifespan of mice was recognized by Science as one of the top 10 scientific breakthroughs of 2009. In addition to increasing lifespan, Neff and colleagues show that while rapamycin improves several functions/pathologies that change with age, it has little effect on the majority of the physiological and structural parameters they evaluated. What do these...

Nonrandom movement behavior at habitat boundaries in two butterfly species: implications for dispersal.

We observed meadow brown (Maniola jurtina) and gatekeeper (Pyronia tithonus) butterflies at habitat boundaries and observed spontaneous movements out of suitable habitat in order to investigate such movements in relation to dispersal. We found that butterflies of both species were aware of the position of a highly permeable habitat boundary without needing to cross it. Nevertheless, a considera...

Combating the Tithonus error: what works?

The effect of resistance training intervention on serum levels of some anti-aging and rejuvenating proteins in older men

Introduction: exercise interventions can play an important role in delaying aging. Klotho protein and Growth Differentiation Factor 11 (GDF11) are a new family of biochemical theories of the aging process. The aim of the present study was to investigate the effect of 12 weeks of resistance training on serum levels of Klotho anti-aging proteins and rejuvenating of GDF11 factor in elderly men. Me...