Beneath the arid lands of East Africa lives one of the most baffling biological wonders of the animal kingdom: the naked mole-rat (Heterocephalus glaber). This subterranean and eusocial rodent, famous for its wrinkled appearance and nearly total cancer resistance, hides an arsenal of physiological adaptations that defy the conventional laws of mammalian biology.
In 2017, a study published in the journal Science revealed that these animals can survive under conditions of absolute anoxia—zero oxygen—for more than 18 minutes without suffering the slightest brain damage or neurological consequences. While the brain of a human or a common mouse collapses in a matter of seconds when glucose metabolism halts, the naked mole-rat triggers a unique emergency mechanism: it switches its energy metabolism and burns fructose instead of glucose via cellular pathways mediated by the ketohexokinase enzyme and GLUT5 transporters, a metabolic strategy typical of plant tissues.
Added to this marvel is an extraordinary longevity: they exceed 37 years of life (ten times longer than a common mouse). Interestingly, they violate Gompertz's law of mortality, as their statistical probability of dying does not increase with age thanks to their exceptional DNA repair machinery and the production of high-molecular-mass hyaluronic acid, which halts tumor proliferation.
Source: Science (Park et al., 2017 - 'Fructose-driven glycolysis supports anoxia resistance in the naked mole-rat')
