Molecular activity of the sodium pump: effect of phylogeny and thyroid status

Study 1. Molecular activity of the sodium pump and membrane fatty acid composition in the nervous system of an endotherm and an ectotherm In the present study, molecular activities of the sodium pump were investigated in three nervous tissues (brain, spinal cord and sciatic nerve) and two non-nervous tissues (kidney and heart) from Rattus norvegicus and Bufo marinus in relation to membrane fatty acid composition. Study 2. Influence of thyroid status on molecular activity of the sodium pump and membrane fatty acid composition This study aimed to examine the influence of thyroid status on sodium pump concentration, Na+ -K*-ATPase activity and sodium pump molecular activity in relation to membrane fatty acid composition in three nervous tissues (brain, spinal cord and sciatic nerve) and two non-nervous tissues (kidney and heart).