Photo: Helmut Corneli / Globallookpress.com
Scientists at the University of California in Los Angeles carried out the transplant of memory from one sea snail to the other through the injection of specific ribonucleic acids (RNA). Article researchers published in the journal eNeuro, reports EurekAlert!.
Scientists were subjected to molluscs of the genus Aplysia weak electric shocks. During each of two sessions separated by 24 hours, biologists five times he touched the electrodes to the foot of snails every 20 minutes. Animals have developed a protective reflex, expressed in the contraction of the muscles during 50 seconds in subsequent contacts with the electrodes. Snails in the control group, which biologists did not cause sensitisation, duration of the reaction to the current was one second.
The researchers extracted RNA, which was accumulated in the nervous system of animals after the shocks, and not sensitized. In the first case, the molecules were introduced in seven snails that have not undergone the procedure of impact shock. In the second case, injection of RNA were also conducted shellfish produced no reflex. It turned out that the transplantation of ribonucleic acids from sensitized snails contributed to the development of molluscs in the control group, the conditioned reflex of a duration of 40 seconds.
Scientists have found that for the production of reflex answer sensory neurons, which are excitable in the presence of certain RNA. According to the researchers, the results show that memories are stored in the nuclei of neurons, where specific genes are activated and synthesizes corresponding ribonucleic acid. Biologists believe that in the future this method can be used to recover memories lost in the early stages of Alzheimer’s disease.
Video, photo All from Russia.