[Serotonin immunoreactivity in the adrenal medullar in hypoxia].

Laboratory rats were exposed to influence of intermittent hypoxia every other day during the period of 11 days. Conditions similar to those of 7000 meters above sea level were imitated. Using the method of indirect immunofluorescence the state of serotonin immunoreactivity of the adrenal glands medulla was analyzed. After exposure of animals to influence of hypoxia serotonin decreased in the adrenal glands medulla, which is in harmony with the realization concerning adrenomedullar regulatory mechanisms as a response to hypoxia.