[Effect of hyperbaric conditions on liver monoamine oxidase activity in Komandor squid and mice]

Liver monoamineoxidase of Berryteuthis magister has been first studied for its activity and substrate specificity. Valid decrease of monoamineoxidase activity has been observed in the preparation obtained from the mouse liver by three studied substrates (serotonine, tyramine, benzylamine) as affected by high pressure (101 at; helioxygen mixture and hydrostatical conditions). At the same time, monoamineoxidase activity in the preparation isolated from Berryteuthis magister liver did not change under such conditions. Such stability of the liver enzyme of Berryteuthis magister dwelling under natural conditions under the effect of high pressure is treated from the viewpoint of biochemical adaptation.