Aging cells with the same genetic material and in the same environment can occur in two different ways. The results of the relevant studies published on the portal Phys.org.
Molecular biologists and bioengineers at the University of California in San Diego studied cellular processes in yeast Saccharomyces cerevisiae. Using the methods of microhydrodynamic and computer modeling, scientists have found that about half of the cells get old in the process of gradual reduction of the stability of the nucleolus — region in the nuclear DNA, where the formation of key components for protein synthesis. The other half of the cells dysfunctioning of the mitochondria-the power plants of the cell.
Studying molecular changes in the genome over time, American researchers have developed a formula for a more accurate comparison of the age of the dog with age. This is the first scientific study on the subject. The results were published in the journal Cell Systems.
There is a perception that the age of dogs can be assessed in human years, multiply by seven. But the linear comparison is inappropriate, since it is known that representatives of different species age at different speeds.
Dietitian Advisory and diagnostic center "health and sports nutrition" FITS of food and biotechnology Tamara Pranava told what foods should be included in the diet to avoid premature aging.
Harmful nutritionist called highly processed products that contain at least five additives – dyes, flavors, preservatives, thickeners, and others. This category includes hot dogs, sausages, store-bought meatballs and other semi-finished products, pastries, dairy desserts, soda.