My comment to The Scientist
Cai says microRNAs could be a potential mechanism by which hypothalamic neural stem cells have such wide-ranging effects on aging, yet he believes that neurogenesis may also be involved.
At least 10,000 neurons in 26 different brain areas appear to transmit signals directly to GnRH neurons. GnRH neurons appear to transmit signals to as many as 30,000 or more neurons in 34 brain areas, consistent with previous studies showing GnRH+ fibers and GnRH receptors in multiple brain regions. These results may reflect a strategy wherein GnRH neurons can modify diverse functions in order to coordinate the internal state of the animal and its behavior with reproduction in order to optimize reproductive success.
…the epigenetic ‘tweaking’ of the immense gene networks that occurs via exposure to nutrient chemicals and pheromones can now be modeled in the context of the microRNA/messenger RNA balance, receptor-mediated intracellular signaling, and the stochastic gene expression required for nutrient-dependent pheromone-controlled adaptive evolution. The role of the microRNA/messenger RNA balance (Breen, Kemena, Vlasov, Notredame, & Kondrashov, 2012; Duvarci, Nader, & LeDoux, 2008; Griggs et al., 2013; Monahan & Lomvardas, 2012) in adaptive evolution will certainly be discussed in published works that will follow.
More than 63,000 indexed articles on PubMed link energy-dependent changes in the microRNA/messenger RNA balance to healthy longevity. Many of them also link the virus-driven theft of quantized energy from mutations to pathology such as John McCain’s glioblastoma. He will probably be treated with microRNAs, but that fact may not be reported because the effective treatment is a refutation of neo-Darwinian pseudoscientific nonsense about mutations, natural selection, and evolution.