Inhibition of sodium-potassium-ATPase: a potentially ubiquitous mechanism contributing to central nervous system neuropathology.
Level 5 - mechanism / opinion, no new human data
Narrative review synthesizing mechanistic hypotheses without new human experimental data.
PubMed 1665097 · doi:10.1016/0165-0173(91)90011-v
What was done
This paper is a narrative review presenting a mechanistic hypothesis on how reduced or inhibited Na+/K+-ATPase activity contributes to neuronal damage in central nervous system disorders, including ischemia, hypoglycemia, epilepsy, and excitotoxin exposure.
What was found
The abstract reports no quantitative data or numerical findings. It outlines qualitative mechanistic pathways: Na+/K+-ATPase inhibition collapses the transmembrane sodium gradient, which blocks glutamate reuptake and stimulates neurotransmitter release; membrane depolarization removes the magnesium block from NMDA receptors and opens voltage-gated calcium channels; failure of sodium-calcium exchange leads to toxic intracellular calcium accumulation; and sodium retention causes osmotic swelling and cell lysis.
Why it matters
It provides a unifying pathophysiological framework linking metabolic failure and impaired ion transport to glutamate-mediated excitotoxic cell death across acute neurological insults.
Limits
The abstract describes a theoretical framework and narrative synthesis rather than a systematic review or primary clinical trial. No sample sizes, quantitative estimates, or empirical outcome data are provided.
Cited by
- supports Sodium, magnesium, and potassium electrolytes are vital for the functioning of all body cells, particularly neurons.