Why not live in the orchid room for a long time? In the past, scientists attributed it to the olfactory adaptation caused by the paralysis of neurons in the nervous system. Now, there is a new explanation for this kind of phenomenon. At the end of September, the reporter learned from Zhejiang University that the team of Professor Kang Lijun and academician Duan Shumin of the school of brain science and brain medicine of Zhejiang University first discovered that peripheral glial cells can directly sense the environmental odor stimulation, and inhibit the activity of olfactory neurons in real time through GABA neurotransmitter, thus causing olfactory adaptability. < / P > < p > according to the introduction, glial cells are an important part of the nervous system, and their abnormal function will directly lead to a variety of neurological diseases. Compared with neurons, glial cells generally do not form typical synaptic structure, and the electrical excitability of cell membrane is relatively low. It has long been thought that glial cells are inert tissues, and they coexist like twins. < / P > < p > the researchers carried out experiments with isoamyl alcohol, a fat soluble substance, which is aromatic when the concentration is low and stinky when the concentration is too high. When they stimulated the model organism Caenorhabditis elegans with high concentration of isoamyl alcohol, they found that Ca2 + in olfactory neurons and glial cells increased, and they could feel the odor independently. < / P > < p > “the previous understanding is that when encountering stimulation, neurons charge ahead, and glial cells are not so active.” Kang Lijun said, but this experiment found that glial cells can directly feel the smell, and release inhibitory GABA neurotransmitter after feeling the external stimulation, and then control neurons to reduce their sensitivity to smell. < / P > < p > “this active action of glial cells makes neurons slow to respond to repetitive stimuli, resulting in environmental adaptability.” Kang Lijun said that this is like an electronic reset, which weakens the existing stimulus information. < / P > < p > Kang Lijun said that the new understanding of the function of glial cells has opened up new ideas for the regulation of neuron and neural function through glial cells in the future. “For example, for olfactory degeneration and sensory dysfunction caused by Alzheimer’s disease, new drug molecular targets can be developed.” Spontaneous combustion at a Guangzhou Motor vehicle intersection and other traffic lights in Shenzhen

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