An international group of scientists revealed the secret of the long life of mammals. It turned out that species with a large brain and an advanced immune system (for example, cats) live longer. The study was published scientifically magazine Scientific reports (sciep).
The team analyzed 46 species of genome from mice to whales. It turned out that long frames (dolphins – 39 years old, whales – 100 years) expanded immunity gene families. These genes help to fight infections, remove damaged cells and prevent tumors.
However, some species violate the rule “more brain – longer”. For example, naked digesters (about 10 cm rodents) live up to 20 years despite the small brain. Babs also exceeds the expected life expectancy for indicators. DNA analysis showed that these animals also improve immune genes.
Although the study does not directly compare cats and dogs, the results explain the difference. Cats have a larger brain than body size, and their immunity fights more effectively with age -related changes.
The next step is to examine the genes responsible for cancer resistance that can shed light on aging mechanisms in humans.
Previously, scientists To create Tomatoes have a “rejuvenation” mechanism similar to human beings.
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Source: Gazeta
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