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skin neuron

04.05.2015

In cell engineering, another important result was obtained: skin cells could be reprogrammed into the precursors of hypothalamic neurons and then many different neurons contained in this important brain structure could be obtained from them.

The hypothalamus is known for secreting neuropeptides that control many reactions in the human body. It is in the hypothalamus that the neurons that control appetite are located. The newly obtained nerve cells will not be transplanted to patients suffering from obesity: scientists need them for experiments. If not for the work of Kevin Eggan and his colleagues from Harvard University, such experiments would not have been possible: it was not possible to extract intact hypothalamic cells not only from the human brain, but even from the brain of a mouse.

The transformation of a skin cell into a neuron was long - it took 30 days. Neurons gave a completely satisfactory response to the intake of insulin and leptin: an increase in the concentration of these substances in the blood indicates that the body is digesting food.

Now researchers will learn more about the neurophysiology of weight control, about the various anomalies of this process, and, of course, will be able to test anti-obesity drugs.

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Everyone lives in their own reality 22.09.2021

An experiment in the field of quantum physics has demonstrated a stunning idea that was previously expressed only in the framework of a theory. It turns out that under the right conditions, two people can observe the same event with different results - and both will be right!

Physicists from Heriot-Watt University have demonstrated how two people can experience a "different reality" by recreating a classic speculative experiment in quantum physics in practice.

The experiment involves two people observing the same photon - the smallest quantitative unit of light, which under different conditions can exhibit the properties of both a wave and a particle. A photon can exist in one of these two states, but before anyone can measure it, it is in a so-called "superposition" - that is, both conditions are met at the same time.

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The results of the study are proof that when it comes to quantum physics, the concept of "general objective reality" simply ... ceases to exist.

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