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Why Not Make thirst Sleep?

Posted on | May 10, 2009 | Comments Off

aat sleeping man will not feel thirsty and dehydrated, but people can sleep for hours. What causes people do not feel thirsty during sleep?

A study showed the body’s internal clock has helped regulate water storage hormone, so dehydration does not occur during sleep and the body remain hydrated (aqueous).

Two experts of neurophysiological and Charles Trundel Eric Bourque from the Research Institute of the McGill University Health Center in Montreal, Canada expresses circadian system mechanisms or biological clock that regulates body water control. The results have been published in an article published in Nature Neuroscience.

The mechanism controlling the water in a way that serves the cell activates vasopressin release, the hormone that instructs the body to store water. Because this hormone, circadian system to keep your body stay hydrated during sleep and those who sleep do not become dehydrated.

“We have long known that there are levels of the hormone vasopressin are high while sleeping, but no one knows how that could happen,”

Regulate body water content to equilibrate with the water intake causing thirst due to loss of water through the urine. While people do not drink during sleep, thus trying to minimize the loss of body water to stay hydrated.

The scientists realized that the low water levels could stimulate a group of cells called neurons osmosensory. These hormones directly regulate other neurons to release vasopressin into the bloodstream. This has led to increased levels of vasopressin during sleep and does not cause dehydration.

Trudel and Bourque tried to test the activity of neurons that allow the activity of neurons osmosensory easier. Kemdian activates vasopressin-releasing neurons that leads to more water in the body. And reduce urinary retention during sleep.

The results of this study showed cell clock (clock cells) act as switches to control the water. When the activity is very active cells, secretory cells are prevented from giving orders vasopressin release.

But now it is less active cells, the secretory sensory cells can easily instruct the cells to release vasopressin and ensure the body has sufficient water reserves.

Bourque hopes in the future can reveal whether the same mechanism may occur on systems that regulate hunger, sleepiness and physiological aspects associated with other circadian system.

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