title: Brain water and aging.
abstract: Brain water content and Na/K-ATPase activity have been compared in two groups of rats aged 60 +/- 5 days (group I) and 630 +/- 10 days (group II). In group II control animals, brain water content (p less than 0.001) and Na/K-ATPase activity (p less than 0.02) were found to be significantly reduced. Following a cryogenic lesion of the brain, the increase in water content was larger in group I (not significant), whereas impairment of Na/K-ATPase activity was much more pronounced in group II (p less than 0.001).
mesh_terms: D000375:Aging; D000818:Animals; D001921:Brain / Q000378:metabolism*; D001929:Brain Edema / Q000378:metabolism; D006955:Hypernatremia / Q000378:metabolism; D051381:Rats; D000254:Sodium-Potassium-Exchanging ATPase / Q000378:metabolism*; D014867:Water / Q000032:analysis*
chemical_list: D014867:Water; D000254:Sodium-Potassium-Exchanging ATPase