Na⁺ / K⁺ -ATP-ase (EC 3.6.1.37) is the integral protein of plasmatic membranes of cells for majority of animal tissue. It is a more intensively studied the vector enzymes of biological membranes.
We have studied the high hydrostatic pressure influence on ATP-ase activity variation.
The human blood stabilized by heparin was subjected to high pressure in the range 25-150 MPa at chilling temperature.
The Mg²⁺+ and Na⁺/K⁺ ATP-ases activities was studied by evaluation of phosphor content in hemolysates of erythrocytes at their incubation with ATP by spectro-photometry method at 756 nm.
It was revealed the progressive increase of Na⁺/K⁺ ATP -ase and decrease of Mg²⁺ -ATP-ase activities with high pressure value enhancement into the studied pressure range.
The obtained results will be discussed.

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