Sentence examples for life span models from inspiring English sources

Reduction of glucose, which is the preferred carbon source of most microbes, has a wide spectrum of effects in the variety of established microbial life span models, ranging from nearly 100-fold life span extension (van Diepeningen et al. 2010) to threefold life span reduction (Oliveira et al. 2008).

The aim of this paper is to present the life-span model of motivation comprising four key processes or the four C's – channelling, choice, co-agency or co-regulation and compensation – in the context of several longitudinal data sets focusing on people's personal goals during critical life transitions.

Three different approaches have been considered: (i) a homogenous life-span model, (ii) a random destruction model, and (iii) a transit-compartment model, which takes into account variation in life-span of RBC.

Recent evidence supports a role for microRNAs (miRNAs) in regulating the life span of model organisms.

Their inactivation shortens life span in model organisms.

Their levels decline continuously with age and polyamine (spermidine or high-polyamine diet) supplementation increases life span in model organisms.

We have recently revisited these questions using the Saccharomyces cerevisiae chronological life span (CLS) model of aging [ 1].

However, to the best of our knowledge, only two studies have so far reported that DNA repair factors upon overexpression extend the life span of model systems.

Pharmacological or nutritional interventions capable of activating SIRT1 enzymatic activity have been shown to increase life span in model organisms [ 11- 13].

A recent study showed that the polyamine spermidine induces autophagy and thereby prolongs life span in model organisms (Eisenberg et al., 2009).

Although controversially discussed it has been recently shown that resveratrol may increase life span in model organisms such as Caenorhabditis elegans and Drosophila melanogaster [ 4- 6].